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{nl,cfg}80211: Peer STA VHT caps
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
27 struct genl_info *info,
28 struct cfg80211_crypto_settings *settings,
29 int cipher_limit);
30
31 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
32 struct genl_info *info);
33 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35
36 /* the netlink family */
37 static struct genl_family nl80211_fam = {
38 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
39 .name = "nl80211", /* have users key off the name instead */
40 .hdrsize = 0, /* no private header */
41 .version = 1, /* no particular meaning now */
42 .maxattr = NL80211_ATTR_MAX,
43 .netnsok = true,
44 .pre_doit = nl80211_pre_doit,
45 .post_doit = nl80211_post_doit,
46 };
47
48 /* returns ERR_PTR values */
49 static struct wireless_dev *
50 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
51 {
52 struct cfg80211_registered_device *rdev;
53 struct wireless_dev *result = NULL;
54 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
55 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
56 u64 wdev_id;
57 int wiphy_idx = -1;
58 int ifidx = -1;
59
60 assert_cfg80211_lock();
61
62 if (!have_ifidx && !have_wdev_id)
63 return ERR_PTR(-EINVAL);
64
65 if (have_ifidx)
66 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
67 if (have_wdev_id) {
68 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
69 wiphy_idx = wdev_id >> 32;
70 }
71
72 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
73 struct wireless_dev *wdev;
74
75 if (wiphy_net(&rdev->wiphy) != netns)
76 continue;
77
78 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
79 continue;
80
81 mutex_lock(&rdev->devlist_mtx);
82 list_for_each_entry(wdev, &rdev->wdev_list, list) {
83 if (have_ifidx && wdev->netdev &&
84 wdev->netdev->ifindex == ifidx) {
85 result = wdev;
86 break;
87 }
88 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
89 result = wdev;
90 break;
91 }
92 }
93 mutex_unlock(&rdev->devlist_mtx);
94
95 if (result)
96 break;
97 }
98
99 if (result)
100 return result;
101 return ERR_PTR(-ENODEV);
102 }
103
104 static struct cfg80211_registered_device *
105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
106 {
107 struct cfg80211_registered_device *rdev = NULL, *tmp;
108 struct net_device *netdev;
109
110 assert_cfg80211_lock();
111
112 if (!attrs[NL80211_ATTR_WIPHY] &&
113 !attrs[NL80211_ATTR_IFINDEX] &&
114 !attrs[NL80211_ATTR_WDEV])
115 return ERR_PTR(-EINVAL);
116
117 if (attrs[NL80211_ATTR_WIPHY])
118 rdev = cfg80211_rdev_by_wiphy_idx(
119 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
120
121 if (attrs[NL80211_ATTR_WDEV]) {
122 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
123 struct wireless_dev *wdev;
124 bool found = false;
125
126 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
127 if (tmp) {
128 /* make sure wdev exists */
129 mutex_lock(&tmp->devlist_mtx);
130 list_for_each_entry(wdev, &tmp->wdev_list, list) {
131 if (wdev->identifier != (u32)wdev_id)
132 continue;
133 found = true;
134 break;
135 }
136 mutex_unlock(&tmp->devlist_mtx);
137
138 if (!found)
139 tmp = NULL;
140
141 if (rdev && tmp != rdev)
142 return ERR_PTR(-EINVAL);
143 rdev = tmp;
144 }
145 }
146
147 if (attrs[NL80211_ATTR_IFINDEX]) {
148 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
149 netdev = dev_get_by_index(netns, ifindex);
150 if (netdev) {
151 if (netdev->ieee80211_ptr)
152 tmp = wiphy_to_dev(
153 netdev->ieee80211_ptr->wiphy);
154 else
155 tmp = NULL;
156
157 dev_put(netdev);
158
159 /* not wireless device -- return error */
160 if (!tmp)
161 return ERR_PTR(-EINVAL);
162
163 /* mismatch -- return error */
164 if (rdev && tmp != rdev)
165 return ERR_PTR(-EINVAL);
166
167 rdev = tmp;
168 }
169 }
170
171 if (!rdev)
172 return ERR_PTR(-ENODEV);
173
174 if (netns != wiphy_net(&rdev->wiphy))
175 return ERR_PTR(-ENODEV);
176
177 return rdev;
178 }
179
180 /*
181 * This function returns a pointer to the driver
182 * that the genl_info item that is passed refers to.
183 * If successful, it returns non-NULL and also locks
184 * the driver's mutex!
185 *
186 * This means that you need to call cfg80211_unlock_rdev()
187 * before being allowed to acquire &cfg80211_mutex!
188 *
189 * This is necessary because we need to lock the global
190 * mutex to get an item off the list safely, and then
191 * we lock the rdev mutex so it doesn't go away under us.
192 *
193 * We don't want to keep cfg80211_mutex locked
194 * for all the time in order to allow requests on
195 * other interfaces to go through at the same time.
196 *
197 * The result of this can be a PTR_ERR and hence must
198 * be checked with IS_ERR() for errors.
199 */
200 static struct cfg80211_registered_device *
201 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
202 {
203 struct cfg80211_registered_device *rdev;
204
205 mutex_lock(&cfg80211_mutex);
206 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
207
208 /* if it is not an error we grab the lock on
209 * it to assure it won't be going away while
210 * we operate on it */
211 if (!IS_ERR(rdev))
212 mutex_lock(&rdev->mtx);
213
214 mutex_unlock(&cfg80211_mutex);
215
216 return rdev;
217 }
218
219 /* policy for the attributes */
220 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
221 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
222 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
223 .len = 20-1 },
224 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
225 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
226 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
228 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
230 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
231 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
232
233 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
235 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
236
237 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
238 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
239
240 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
241 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
242 .len = WLAN_MAX_KEY_LEN },
243 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
244 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
245 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
246 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
247 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
248
249 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
250 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
251 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_DATA_LEN },
255 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
257 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
258 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
259 .len = NL80211_MAX_SUPP_RATES },
260 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
261 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
262 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
263 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
264 .len = IEEE80211_MAX_MESH_ID_LEN },
265 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
266
267 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
268 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
269
270 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
273 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
274 .len = NL80211_MAX_SUPP_RATES },
275 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
276
277 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
278 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
279
280 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
281
282 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
283 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
284 .len = IEEE80211_MAX_DATA_LEN },
285 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
286 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
287
288 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_SSID_LEN },
290 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
291 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
292 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
293 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
294 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
295 [NL80211_ATTR_STA_FLAGS2] = {
296 .len = sizeof(struct nl80211_sta_flag_update),
297 },
298 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
300 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
301 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
302 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
303 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
304 [NL80211_ATTR_PID] = { .type = NLA_U32 },
305 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
306 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
307 .len = WLAN_PMKID_LEN },
308 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
309 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
310 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
311 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
314 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
315 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
316 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
317 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
318 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
319 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
320 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
321 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
322 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
323 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
324 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
325 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
326 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
327 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
328 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
329 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
330 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
331 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
332 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
337 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
338 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
342 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
344 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
345 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
346 .len = IEEE80211_MAX_DATA_LEN },
347 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
348 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
350 .len = NL80211_HT_CAPABILITY_LEN
351 },
352 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
353 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
354 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
355 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
356 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
357 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
359 };
360
361 /* policy for the key attributes */
362 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
363 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
364 [NL80211_KEY_IDX] = { .type = NLA_U8 },
365 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
366 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
367 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
368 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
369 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
370 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
371 };
372
373 /* policy for the key default flags */
374 static const struct nla_policy
375 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
376 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
377 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
378 };
379
380 /* policy for WoWLAN attributes */
381 static const struct nla_policy
382 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
383 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
384 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
385 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
386 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
387 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
388 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
389 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
390 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
391 };
392
393 /* policy for GTK rekey offload attributes */
394 static const struct nla_policy
395 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
396 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
397 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
398 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
399 };
400
401 static const struct nla_policy
402 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
403 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
404 .len = IEEE80211_MAX_SSID_LEN },
405 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
406 };
407
408 /* ifidx get helper */
409 static int nl80211_get_ifidx(struct netlink_callback *cb)
410 {
411 int res;
412
413 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
414 nl80211_fam.attrbuf, nl80211_fam.maxattr,
415 nl80211_policy);
416 if (res)
417 return res;
418
419 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
420 return -EINVAL;
421
422 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
423 if (!res)
424 return -EINVAL;
425 return res;
426 }
427
428 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
429 struct netlink_callback *cb,
430 struct cfg80211_registered_device **rdev,
431 struct net_device **dev)
432 {
433 int ifidx = cb->args[0];
434 int err;
435
436 if (!ifidx)
437 ifidx = nl80211_get_ifidx(cb);
438 if (ifidx < 0)
439 return ifidx;
440
441 cb->args[0] = ifidx;
442
443 rtnl_lock();
444
445 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
446 if (!*dev) {
447 err = -ENODEV;
448 goto out_rtnl;
449 }
450
451 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
452 if (IS_ERR(*rdev)) {
453 err = PTR_ERR(*rdev);
454 goto out_rtnl;
455 }
456
457 return 0;
458 out_rtnl:
459 rtnl_unlock();
460 return err;
461 }
462
463 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
464 {
465 cfg80211_unlock_rdev(rdev);
466 rtnl_unlock();
467 }
468
469 /* IE validation */
470 static bool is_valid_ie_attr(const struct nlattr *attr)
471 {
472 const u8 *pos;
473 int len;
474
475 if (!attr)
476 return true;
477
478 pos = nla_data(attr);
479 len = nla_len(attr);
480
481 while (len) {
482 u8 elemlen;
483
484 if (len < 2)
485 return false;
486 len -= 2;
487
488 elemlen = pos[1];
489 if (elemlen > len)
490 return false;
491
492 len -= elemlen;
493 pos += 2 + elemlen;
494 }
495
496 return true;
497 }
498
499 /* message building helper */
500 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
501 int flags, u8 cmd)
502 {
503 /* since there is no private header just add the generic one */
504 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
505 }
506
507 static int nl80211_msg_put_channel(struct sk_buff *msg,
508 struct ieee80211_channel *chan)
509 {
510 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
511 chan->center_freq))
512 goto nla_put_failure;
513
514 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
515 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
516 goto nla_put_failure;
517 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
518 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
519 goto nla_put_failure;
520 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
521 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
522 goto nla_put_failure;
523 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
524 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
525 goto nla_put_failure;
526
527 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
528 DBM_TO_MBM(chan->max_power)))
529 goto nla_put_failure;
530
531 return 0;
532
533 nla_put_failure:
534 return -ENOBUFS;
535 }
536
537 /* netlink command implementations */
538
539 struct key_parse {
540 struct key_params p;
541 int idx;
542 int type;
543 bool def, defmgmt;
544 bool def_uni, def_multi;
545 };
546
547 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
548 {
549 struct nlattr *tb[NL80211_KEY_MAX + 1];
550 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
551 nl80211_key_policy);
552 if (err)
553 return err;
554
555 k->def = !!tb[NL80211_KEY_DEFAULT];
556 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
557
558 if (k->def) {
559 k->def_uni = true;
560 k->def_multi = true;
561 }
562 if (k->defmgmt)
563 k->def_multi = true;
564
565 if (tb[NL80211_KEY_IDX])
566 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
567
568 if (tb[NL80211_KEY_DATA]) {
569 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
570 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
571 }
572
573 if (tb[NL80211_KEY_SEQ]) {
574 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
575 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
576 }
577
578 if (tb[NL80211_KEY_CIPHER])
579 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
580
581 if (tb[NL80211_KEY_TYPE]) {
582 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
583 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
584 return -EINVAL;
585 }
586
587 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
588 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
589 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
590 tb[NL80211_KEY_DEFAULT_TYPES],
591 nl80211_key_default_policy);
592 if (err)
593 return err;
594
595 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
596 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
597 }
598
599 return 0;
600 }
601
602 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
603 {
604 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
605 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
606 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
607 }
608
609 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
610 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
611 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
612 }
613
614 if (info->attrs[NL80211_ATTR_KEY_IDX])
615 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
616
617 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
618 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
619
620 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
621 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
622
623 if (k->def) {
624 k->def_uni = true;
625 k->def_multi = true;
626 }
627 if (k->defmgmt)
628 k->def_multi = true;
629
630 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
631 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
632 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
633 return -EINVAL;
634 }
635
636 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
637 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
638 int err = nla_parse_nested(
639 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
640 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
641 nl80211_key_default_policy);
642 if (err)
643 return err;
644
645 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
646 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
647 }
648
649 return 0;
650 }
651
652 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
653 {
654 int err;
655
656 memset(k, 0, sizeof(*k));
657 k->idx = -1;
658 k->type = -1;
659
660 if (info->attrs[NL80211_ATTR_KEY])
661 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
662 else
663 err = nl80211_parse_key_old(info, k);
664
665 if (err)
666 return err;
667
668 if (k->def && k->defmgmt)
669 return -EINVAL;
670
671 if (k->defmgmt) {
672 if (k->def_uni || !k->def_multi)
673 return -EINVAL;
674 }
675
676 if (k->idx != -1) {
677 if (k->defmgmt) {
678 if (k->idx < 4 || k->idx > 5)
679 return -EINVAL;
680 } else if (k->def) {
681 if (k->idx < 0 || k->idx > 3)
682 return -EINVAL;
683 } else {
684 if (k->idx < 0 || k->idx > 5)
685 return -EINVAL;
686 }
687 }
688
689 return 0;
690 }
691
692 static struct cfg80211_cached_keys *
693 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
694 struct nlattr *keys)
695 {
696 struct key_parse parse;
697 struct nlattr *key;
698 struct cfg80211_cached_keys *result;
699 int rem, err, def = 0;
700
701 result = kzalloc(sizeof(*result), GFP_KERNEL);
702 if (!result)
703 return ERR_PTR(-ENOMEM);
704
705 result->def = -1;
706 result->defmgmt = -1;
707
708 nla_for_each_nested(key, keys, rem) {
709 memset(&parse, 0, sizeof(parse));
710 parse.idx = -1;
711
712 err = nl80211_parse_key_new(key, &parse);
713 if (err)
714 goto error;
715 err = -EINVAL;
716 if (!parse.p.key)
717 goto error;
718 if (parse.idx < 0 || parse.idx > 4)
719 goto error;
720 if (parse.def) {
721 if (def)
722 goto error;
723 def = 1;
724 result->def = parse.idx;
725 if (!parse.def_uni || !parse.def_multi)
726 goto error;
727 } else if (parse.defmgmt)
728 goto error;
729 err = cfg80211_validate_key_settings(rdev, &parse.p,
730 parse.idx, false, NULL);
731 if (err)
732 goto error;
733 result->params[parse.idx].cipher = parse.p.cipher;
734 result->params[parse.idx].key_len = parse.p.key_len;
735 result->params[parse.idx].key = result->data[parse.idx];
736 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
737 }
738
739 return result;
740 error:
741 kfree(result);
742 return ERR_PTR(err);
743 }
744
745 static int nl80211_key_allowed(struct wireless_dev *wdev)
746 {
747 ASSERT_WDEV_LOCK(wdev);
748
749 switch (wdev->iftype) {
750 case NL80211_IFTYPE_AP:
751 case NL80211_IFTYPE_AP_VLAN:
752 case NL80211_IFTYPE_P2P_GO:
753 case NL80211_IFTYPE_MESH_POINT:
754 break;
755 case NL80211_IFTYPE_ADHOC:
756 if (!wdev->current_bss)
757 return -ENOLINK;
758 break;
759 case NL80211_IFTYPE_STATION:
760 case NL80211_IFTYPE_P2P_CLIENT:
761 if (wdev->sme_state != CFG80211_SME_CONNECTED)
762 return -ENOLINK;
763 break;
764 default:
765 return -EINVAL;
766 }
767
768 return 0;
769 }
770
771 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
772 {
773 struct nlattr *nl_modes = nla_nest_start(msg, attr);
774 int i;
775
776 if (!nl_modes)
777 goto nla_put_failure;
778
779 i = 0;
780 while (ifmodes) {
781 if ((ifmodes & 1) && nla_put_flag(msg, i))
782 goto nla_put_failure;
783 ifmodes >>= 1;
784 i++;
785 }
786
787 nla_nest_end(msg, nl_modes);
788 return 0;
789
790 nla_put_failure:
791 return -ENOBUFS;
792 }
793
794 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
795 struct sk_buff *msg)
796 {
797 struct nlattr *nl_combis;
798 int i, j;
799
800 nl_combis = nla_nest_start(msg,
801 NL80211_ATTR_INTERFACE_COMBINATIONS);
802 if (!nl_combis)
803 goto nla_put_failure;
804
805 for (i = 0; i < wiphy->n_iface_combinations; i++) {
806 const struct ieee80211_iface_combination *c;
807 struct nlattr *nl_combi, *nl_limits;
808
809 c = &wiphy->iface_combinations[i];
810
811 nl_combi = nla_nest_start(msg, i + 1);
812 if (!nl_combi)
813 goto nla_put_failure;
814
815 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
816 if (!nl_limits)
817 goto nla_put_failure;
818
819 for (j = 0; j < c->n_limits; j++) {
820 struct nlattr *nl_limit;
821
822 nl_limit = nla_nest_start(msg, j + 1);
823 if (!nl_limit)
824 goto nla_put_failure;
825 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
826 c->limits[j].max))
827 goto nla_put_failure;
828 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
829 c->limits[j].types))
830 goto nla_put_failure;
831 nla_nest_end(msg, nl_limit);
832 }
833
834 nla_nest_end(msg, nl_limits);
835
836 if (c->beacon_int_infra_match &&
837 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
838 goto nla_put_failure;
839 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
840 c->num_different_channels) ||
841 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
842 c->max_interfaces))
843 goto nla_put_failure;
844
845 nla_nest_end(msg, nl_combi);
846 }
847
848 nla_nest_end(msg, nl_combis);
849
850 return 0;
851 nla_put_failure:
852 return -ENOBUFS;
853 }
854
855 static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
856 struct cfg80211_registered_device *dev)
857 {
858 void *hdr;
859 struct nlattr *nl_bands, *nl_band;
860 struct nlattr *nl_freqs, *nl_freq;
861 struct nlattr *nl_rates, *nl_rate;
862 struct nlattr *nl_cmds;
863 enum ieee80211_band band;
864 struct ieee80211_channel *chan;
865 struct ieee80211_rate *rate;
866 int i;
867 const struct ieee80211_txrx_stypes *mgmt_stypes =
868 dev->wiphy.mgmt_stypes;
869
870 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
871 if (!hdr)
872 return -1;
873
874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
875 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
876 nla_put_u32(msg, NL80211_ATTR_GENERATION,
877 cfg80211_rdev_list_generation) ||
878 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
879 dev->wiphy.retry_short) ||
880 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
881 dev->wiphy.retry_long) ||
882 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
883 dev->wiphy.frag_threshold) ||
884 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
885 dev->wiphy.rts_threshold) ||
886 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
887 dev->wiphy.coverage_class) ||
888 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
889 dev->wiphy.max_scan_ssids) ||
890 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
891 dev->wiphy.max_sched_scan_ssids) ||
892 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
893 dev->wiphy.max_scan_ie_len) ||
894 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
895 dev->wiphy.max_sched_scan_ie_len) ||
896 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
897 dev->wiphy.max_match_sets))
898 goto nla_put_failure;
899
900 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
901 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
902 goto nla_put_failure;
903 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
904 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
905 goto nla_put_failure;
906 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
907 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
908 goto nla_put_failure;
909 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
910 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
911 goto nla_put_failure;
912 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
913 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
914 goto nla_put_failure;
915 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
916 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
917 goto nla_put_failure;
918
919 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
920 sizeof(u32) * dev->wiphy.n_cipher_suites,
921 dev->wiphy.cipher_suites))
922 goto nla_put_failure;
923
924 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
925 dev->wiphy.max_num_pmkids))
926 goto nla_put_failure;
927
928 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
929 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
930 goto nla_put_failure;
931
932 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
933 dev->wiphy.available_antennas_tx) ||
934 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
935 dev->wiphy.available_antennas_rx))
936 goto nla_put_failure;
937
938 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
939 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
940 dev->wiphy.probe_resp_offload))
941 goto nla_put_failure;
942
943 if ((dev->wiphy.available_antennas_tx ||
944 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
945 u32 tx_ant = 0, rx_ant = 0;
946 int res;
947 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
948 if (!res) {
949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
950 tx_ant) ||
951 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
952 rx_ant))
953 goto nla_put_failure;
954 }
955 }
956
957 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
958 dev->wiphy.interface_modes))
959 goto nla_put_failure;
960
961 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
962 if (!nl_bands)
963 goto nla_put_failure;
964
965 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
966 if (!dev->wiphy.bands[band])
967 continue;
968
969 nl_band = nla_nest_start(msg, band);
970 if (!nl_band)
971 goto nla_put_failure;
972
973 /* add HT info */
974 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
975 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
976 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
977 &dev->wiphy.bands[band]->ht_cap.mcs) ||
978 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
979 dev->wiphy.bands[band]->ht_cap.cap) ||
980 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
981 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
982 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
983 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
984 goto nla_put_failure;
985
986 /* add VHT info */
987 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
988 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
989 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
990 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
991 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
992 dev->wiphy.bands[band]->vht_cap.cap)))
993 goto nla_put_failure;
994
995 /* add frequencies */
996 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
997 if (!nl_freqs)
998 goto nla_put_failure;
999
1000 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1001 nl_freq = nla_nest_start(msg, i);
1002 if (!nl_freq)
1003 goto nla_put_failure;
1004
1005 chan = &dev->wiphy.bands[band]->channels[i];
1006
1007 if (nl80211_msg_put_channel(msg, chan))
1008 goto nla_put_failure;
1009
1010 nla_nest_end(msg, nl_freq);
1011 }
1012
1013 nla_nest_end(msg, nl_freqs);
1014
1015 /* add bitrates */
1016 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1017 if (!nl_rates)
1018 goto nla_put_failure;
1019
1020 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1021 nl_rate = nla_nest_start(msg, i);
1022 if (!nl_rate)
1023 goto nla_put_failure;
1024
1025 rate = &dev->wiphy.bands[band]->bitrates[i];
1026 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1027 rate->bitrate))
1028 goto nla_put_failure;
1029 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1030 nla_put_flag(msg,
1031 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1032 goto nla_put_failure;
1033
1034 nla_nest_end(msg, nl_rate);
1035 }
1036
1037 nla_nest_end(msg, nl_rates);
1038
1039 nla_nest_end(msg, nl_band);
1040 }
1041 nla_nest_end(msg, nl_bands);
1042
1043 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1044 if (!nl_cmds)
1045 goto nla_put_failure;
1046
1047 i = 0;
1048 #define CMD(op, n) \
1049 do { \
1050 if (dev->ops->op) { \
1051 i++; \
1052 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1053 goto nla_put_failure; \
1054 } \
1055 } while (0)
1056
1057 CMD(add_virtual_intf, NEW_INTERFACE);
1058 CMD(change_virtual_intf, SET_INTERFACE);
1059 CMD(add_key, NEW_KEY);
1060 CMD(start_ap, START_AP);
1061 CMD(add_station, NEW_STATION);
1062 CMD(add_mpath, NEW_MPATH);
1063 CMD(update_mesh_config, SET_MESH_CONFIG);
1064 CMD(change_bss, SET_BSS);
1065 CMD(auth, AUTHENTICATE);
1066 CMD(assoc, ASSOCIATE);
1067 CMD(deauth, DEAUTHENTICATE);
1068 CMD(disassoc, DISASSOCIATE);
1069 CMD(join_ibss, JOIN_IBSS);
1070 CMD(join_mesh, JOIN_MESH);
1071 CMD(set_pmksa, SET_PMKSA);
1072 CMD(del_pmksa, DEL_PMKSA);
1073 CMD(flush_pmksa, FLUSH_PMKSA);
1074 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1075 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1076 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1077 CMD(mgmt_tx, FRAME);
1078 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1079 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1080 i++;
1081 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1082 goto nla_put_failure;
1083 }
1084 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1085 dev->ops->join_mesh) {
1086 i++;
1087 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1088 goto nla_put_failure;
1089 }
1090 CMD(set_wds_peer, SET_WDS_PEER);
1091 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1092 CMD(tdls_mgmt, TDLS_MGMT);
1093 CMD(tdls_oper, TDLS_OPER);
1094 }
1095 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1096 CMD(sched_scan_start, START_SCHED_SCAN);
1097 CMD(probe_client, PROBE_CLIENT);
1098 CMD(set_noack_map, SET_NOACK_MAP);
1099 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1100 i++;
1101 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1102 goto nla_put_failure;
1103 }
1104 CMD(start_p2p_device, START_P2P_DEVICE);
1105
1106 #ifdef CONFIG_NL80211_TESTMODE
1107 CMD(testmode_cmd, TESTMODE);
1108 #endif
1109
1110 #undef CMD
1111
1112 if (dev->ops->connect || dev->ops->auth) {
1113 i++;
1114 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1115 goto nla_put_failure;
1116 }
1117
1118 if (dev->ops->disconnect || dev->ops->deauth) {
1119 i++;
1120 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1121 goto nla_put_failure;
1122 }
1123
1124 nla_nest_end(msg, nl_cmds);
1125
1126 if (dev->ops->remain_on_channel &&
1127 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1128 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1129 dev->wiphy.max_remain_on_channel_duration))
1130 goto nla_put_failure;
1131
1132 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1133 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1134 goto nla_put_failure;
1135
1136 if (mgmt_stypes) {
1137 u16 stypes;
1138 struct nlattr *nl_ftypes, *nl_ifs;
1139 enum nl80211_iftype ift;
1140
1141 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1142 if (!nl_ifs)
1143 goto nla_put_failure;
1144
1145 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1146 nl_ftypes = nla_nest_start(msg, ift);
1147 if (!nl_ftypes)
1148 goto nla_put_failure;
1149 i = 0;
1150 stypes = mgmt_stypes[ift].tx;
1151 while (stypes) {
1152 if ((stypes & 1) &&
1153 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1154 (i << 4) | IEEE80211_FTYPE_MGMT))
1155 goto nla_put_failure;
1156 stypes >>= 1;
1157 i++;
1158 }
1159 nla_nest_end(msg, nl_ftypes);
1160 }
1161
1162 nla_nest_end(msg, nl_ifs);
1163
1164 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1165 if (!nl_ifs)
1166 goto nla_put_failure;
1167
1168 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1169 nl_ftypes = nla_nest_start(msg, ift);
1170 if (!nl_ftypes)
1171 goto nla_put_failure;
1172 i = 0;
1173 stypes = mgmt_stypes[ift].rx;
1174 while (stypes) {
1175 if ((stypes & 1) &&
1176 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1177 (i << 4) | IEEE80211_FTYPE_MGMT))
1178 goto nla_put_failure;
1179 stypes >>= 1;
1180 i++;
1181 }
1182 nla_nest_end(msg, nl_ftypes);
1183 }
1184 nla_nest_end(msg, nl_ifs);
1185 }
1186
1187 #ifdef CONFIG_PM
1188 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1189 struct nlattr *nl_wowlan;
1190
1191 nl_wowlan = nla_nest_start(msg,
1192 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1193 if (!nl_wowlan)
1194 goto nla_put_failure;
1195
1196 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1197 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1198 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1199 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1200 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1201 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1202 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1203 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1204 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1205 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1206 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1207 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1208 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1209 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1210 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1211 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1212 goto nla_put_failure;
1213 if (dev->wiphy.wowlan.n_patterns) {
1214 struct nl80211_wowlan_pattern_support pat = {
1215 .max_patterns = dev->wiphy.wowlan.n_patterns,
1216 .min_pattern_len =
1217 dev->wiphy.wowlan.pattern_min_len,
1218 .max_pattern_len =
1219 dev->wiphy.wowlan.pattern_max_len,
1220 };
1221 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1222 sizeof(pat), &pat))
1223 goto nla_put_failure;
1224 }
1225
1226 nla_nest_end(msg, nl_wowlan);
1227 }
1228 #endif
1229
1230 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1231 dev->wiphy.software_iftypes))
1232 goto nla_put_failure;
1233
1234 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1235 goto nla_put_failure;
1236
1237 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1238 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1239 dev->wiphy.ap_sme_capa))
1240 goto nla_put_failure;
1241
1242 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1243 dev->wiphy.features))
1244 goto nla_put_failure;
1245
1246 if (dev->wiphy.ht_capa_mod_mask &&
1247 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1248 sizeof(*dev->wiphy.ht_capa_mod_mask),
1249 dev->wiphy.ht_capa_mod_mask))
1250 goto nla_put_failure;
1251
1252 return genlmsg_end(msg, hdr);
1253
1254 nla_put_failure:
1255 genlmsg_cancel(msg, hdr);
1256 return -EMSGSIZE;
1257 }
1258
1259 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1260 {
1261 int idx = 0;
1262 int start = cb->args[0];
1263 struct cfg80211_registered_device *dev;
1264
1265 mutex_lock(&cfg80211_mutex);
1266 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1267 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1268 continue;
1269 if (++idx <= start)
1270 continue;
1271 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
1272 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1273 dev) < 0) {
1274 idx--;
1275 break;
1276 }
1277 }
1278 mutex_unlock(&cfg80211_mutex);
1279
1280 cb->args[0] = idx;
1281
1282 return skb->len;
1283 }
1284
1285 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1286 {
1287 struct sk_buff *msg;
1288 struct cfg80211_registered_device *dev = info->user_ptr[0];
1289
1290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1291 if (!msg)
1292 return -ENOMEM;
1293
1294 if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 0) {
1295 nlmsg_free(msg);
1296 return -ENOBUFS;
1297 }
1298
1299 return genlmsg_reply(msg, info);
1300 }
1301
1302 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1303 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1304 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1305 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1306 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1307 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1308 };
1309
1310 static int parse_txq_params(struct nlattr *tb[],
1311 struct ieee80211_txq_params *txq_params)
1312 {
1313 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1314 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1315 !tb[NL80211_TXQ_ATTR_AIFS])
1316 return -EINVAL;
1317
1318 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1319 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1320 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1321 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1322 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1323
1324 if (txq_params->ac >= NL80211_NUM_ACS)
1325 return -EINVAL;
1326
1327 return 0;
1328 }
1329
1330 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1331 {
1332 /*
1333 * You can only set the channel explicitly for WDS interfaces,
1334 * all others have their channel managed via their respective
1335 * "establish a connection" command (connect, join, ...)
1336 *
1337 * For AP/GO and mesh mode, the channel can be set with the
1338 * channel userspace API, but is only stored and passed to the
1339 * low-level driver when the AP starts or the mesh is joined.
1340 * This is for backward compatibility, userspace can also give
1341 * the channel in the start-ap or join-mesh commands instead.
1342 *
1343 * Monitors are special as they are normally slaved to
1344 * whatever else is going on, so they have their own special
1345 * operation to set the monitor channel if possible.
1346 */
1347 return !wdev ||
1348 wdev->iftype == NL80211_IFTYPE_AP ||
1349 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1350 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1351 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1352 }
1353
1354 static bool nl80211_valid_channel_type(struct genl_info *info,
1355 enum nl80211_channel_type *channel_type)
1356 {
1357 enum nl80211_channel_type tmp;
1358
1359 if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1360 return false;
1361
1362 tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1363 if (tmp != NL80211_CHAN_NO_HT &&
1364 tmp != NL80211_CHAN_HT20 &&
1365 tmp != NL80211_CHAN_HT40PLUS &&
1366 tmp != NL80211_CHAN_HT40MINUS)
1367 return false;
1368
1369 if (channel_type)
1370 *channel_type = tmp;
1371
1372 return true;
1373 }
1374
1375 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1376 struct wireless_dev *wdev,
1377 struct genl_info *info)
1378 {
1379 struct ieee80211_channel *channel;
1380 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1381 u32 freq;
1382 int result;
1383 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1384
1385 if (wdev)
1386 iftype = wdev->iftype;
1387
1388 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1389 return -EINVAL;
1390
1391 if (!nl80211_can_set_dev_channel(wdev))
1392 return -EOPNOTSUPP;
1393
1394 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1395 !nl80211_valid_channel_type(info, &channel_type))
1396 return -EINVAL;
1397
1398 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1399
1400 mutex_lock(&rdev->devlist_mtx);
1401 switch (iftype) {
1402 case NL80211_IFTYPE_AP:
1403 case NL80211_IFTYPE_P2P_GO:
1404 if (wdev->beacon_interval) {
1405 result = -EBUSY;
1406 break;
1407 }
1408 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1409 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1410 channel,
1411 channel_type)) {
1412 result = -EINVAL;
1413 break;
1414 }
1415 wdev->preset_chan = channel;
1416 wdev->preset_chantype = channel_type;
1417 result = 0;
1418 break;
1419 case NL80211_IFTYPE_MESH_POINT:
1420 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1421 break;
1422 case NL80211_IFTYPE_MONITOR:
1423 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1424 break;
1425 default:
1426 result = -EINVAL;
1427 }
1428 mutex_unlock(&rdev->devlist_mtx);
1429
1430 return result;
1431 }
1432
1433 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1434 {
1435 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1436 struct net_device *netdev = info->user_ptr[1];
1437
1438 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1439 }
1440
1441 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1442 {
1443 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1444 struct net_device *dev = info->user_ptr[1];
1445 struct wireless_dev *wdev = dev->ieee80211_ptr;
1446 const u8 *bssid;
1447
1448 if (!info->attrs[NL80211_ATTR_MAC])
1449 return -EINVAL;
1450
1451 if (netif_running(dev))
1452 return -EBUSY;
1453
1454 if (!rdev->ops->set_wds_peer)
1455 return -EOPNOTSUPP;
1456
1457 if (wdev->iftype != NL80211_IFTYPE_WDS)
1458 return -EOPNOTSUPP;
1459
1460 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1461 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1462 }
1463
1464
1465 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1466 {
1467 struct cfg80211_registered_device *rdev;
1468 struct net_device *netdev = NULL;
1469 struct wireless_dev *wdev;
1470 int result = 0, rem_txq_params = 0;
1471 struct nlattr *nl_txq_params;
1472 u32 changed;
1473 u8 retry_short = 0, retry_long = 0;
1474 u32 frag_threshold = 0, rts_threshold = 0;
1475 u8 coverage_class = 0;
1476
1477 /*
1478 * Try to find the wiphy and netdev. Normally this
1479 * function shouldn't need the netdev, but this is
1480 * done for backward compatibility -- previously
1481 * setting the channel was done per wiphy, but now
1482 * it is per netdev. Previous userland like hostapd
1483 * also passed a netdev to set_wiphy, so that it is
1484 * possible to let that go to the right netdev!
1485 */
1486 mutex_lock(&cfg80211_mutex);
1487
1488 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1489 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1490
1491 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1492 if (netdev && netdev->ieee80211_ptr) {
1493 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1494 mutex_lock(&rdev->mtx);
1495 } else
1496 netdev = NULL;
1497 }
1498
1499 if (!netdev) {
1500 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1501 info->attrs);
1502 if (IS_ERR(rdev)) {
1503 mutex_unlock(&cfg80211_mutex);
1504 return PTR_ERR(rdev);
1505 }
1506 wdev = NULL;
1507 netdev = NULL;
1508 result = 0;
1509
1510 mutex_lock(&rdev->mtx);
1511 } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1512 wdev = netdev->ieee80211_ptr;
1513 else
1514 wdev = NULL;
1515
1516 /*
1517 * end workaround code, by now the rdev is available
1518 * and locked, and wdev may or may not be NULL.
1519 */
1520
1521 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1522 result = cfg80211_dev_rename(
1523 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1524
1525 mutex_unlock(&cfg80211_mutex);
1526
1527 if (result)
1528 goto bad_res;
1529
1530 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1531 struct ieee80211_txq_params txq_params;
1532 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1533
1534 if (!rdev->ops->set_txq_params) {
1535 result = -EOPNOTSUPP;
1536 goto bad_res;
1537 }
1538
1539 if (!netdev) {
1540 result = -EINVAL;
1541 goto bad_res;
1542 }
1543
1544 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1545 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1546 result = -EINVAL;
1547 goto bad_res;
1548 }
1549
1550 if (!netif_running(netdev)) {
1551 result = -ENETDOWN;
1552 goto bad_res;
1553 }
1554
1555 nla_for_each_nested(nl_txq_params,
1556 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1557 rem_txq_params) {
1558 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1559 nla_data(nl_txq_params),
1560 nla_len(nl_txq_params),
1561 txq_params_policy);
1562 result = parse_txq_params(tb, &txq_params);
1563 if (result)
1564 goto bad_res;
1565
1566 result = rdev->ops->set_txq_params(&rdev->wiphy,
1567 netdev,
1568 &txq_params);
1569 if (result)
1570 goto bad_res;
1571 }
1572 }
1573
1574 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1575 result = __nl80211_set_channel(rdev, wdev, info);
1576 if (result)
1577 goto bad_res;
1578 }
1579
1580 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1581 enum nl80211_tx_power_setting type;
1582 int idx, mbm = 0;
1583
1584 if (!rdev->ops->set_tx_power) {
1585 result = -EOPNOTSUPP;
1586 goto bad_res;
1587 }
1588
1589 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1590 type = nla_get_u32(info->attrs[idx]);
1591
1592 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1593 (type != NL80211_TX_POWER_AUTOMATIC)) {
1594 result = -EINVAL;
1595 goto bad_res;
1596 }
1597
1598 if (type != NL80211_TX_POWER_AUTOMATIC) {
1599 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1600 mbm = nla_get_u32(info->attrs[idx]);
1601 }
1602
1603 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1604 if (result)
1605 goto bad_res;
1606 }
1607
1608 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1609 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1610 u32 tx_ant, rx_ant;
1611 if ((!rdev->wiphy.available_antennas_tx &&
1612 !rdev->wiphy.available_antennas_rx) ||
1613 !rdev->ops->set_antenna) {
1614 result = -EOPNOTSUPP;
1615 goto bad_res;
1616 }
1617
1618 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1619 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1620
1621 /* reject antenna configurations which don't match the
1622 * available antenna masks, except for the "all" mask */
1623 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1624 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1625 result = -EINVAL;
1626 goto bad_res;
1627 }
1628
1629 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1630 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1631
1632 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1633 if (result)
1634 goto bad_res;
1635 }
1636
1637 changed = 0;
1638
1639 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1640 retry_short = nla_get_u8(
1641 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1642 if (retry_short == 0) {
1643 result = -EINVAL;
1644 goto bad_res;
1645 }
1646 changed |= WIPHY_PARAM_RETRY_SHORT;
1647 }
1648
1649 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1650 retry_long = nla_get_u8(
1651 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1652 if (retry_long == 0) {
1653 result = -EINVAL;
1654 goto bad_res;
1655 }
1656 changed |= WIPHY_PARAM_RETRY_LONG;
1657 }
1658
1659 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1660 frag_threshold = nla_get_u32(
1661 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1662 if (frag_threshold < 256) {
1663 result = -EINVAL;
1664 goto bad_res;
1665 }
1666 if (frag_threshold != (u32) -1) {
1667 /*
1668 * Fragments (apart from the last one) are required to
1669 * have even length. Make the fragmentation code
1670 * simpler by stripping LSB should someone try to use
1671 * odd threshold value.
1672 */
1673 frag_threshold &= ~0x1;
1674 }
1675 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1676 }
1677
1678 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1679 rts_threshold = nla_get_u32(
1680 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1681 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1682 }
1683
1684 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1685 coverage_class = nla_get_u8(
1686 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1687 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1688 }
1689
1690 if (changed) {
1691 u8 old_retry_short, old_retry_long;
1692 u32 old_frag_threshold, old_rts_threshold;
1693 u8 old_coverage_class;
1694
1695 if (!rdev->ops->set_wiphy_params) {
1696 result = -EOPNOTSUPP;
1697 goto bad_res;
1698 }
1699
1700 old_retry_short = rdev->wiphy.retry_short;
1701 old_retry_long = rdev->wiphy.retry_long;
1702 old_frag_threshold = rdev->wiphy.frag_threshold;
1703 old_rts_threshold = rdev->wiphy.rts_threshold;
1704 old_coverage_class = rdev->wiphy.coverage_class;
1705
1706 if (changed & WIPHY_PARAM_RETRY_SHORT)
1707 rdev->wiphy.retry_short = retry_short;
1708 if (changed & WIPHY_PARAM_RETRY_LONG)
1709 rdev->wiphy.retry_long = retry_long;
1710 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1711 rdev->wiphy.frag_threshold = frag_threshold;
1712 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1713 rdev->wiphy.rts_threshold = rts_threshold;
1714 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1715 rdev->wiphy.coverage_class = coverage_class;
1716
1717 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1718 if (result) {
1719 rdev->wiphy.retry_short = old_retry_short;
1720 rdev->wiphy.retry_long = old_retry_long;
1721 rdev->wiphy.frag_threshold = old_frag_threshold;
1722 rdev->wiphy.rts_threshold = old_rts_threshold;
1723 rdev->wiphy.coverage_class = old_coverage_class;
1724 }
1725 }
1726
1727 bad_res:
1728 mutex_unlock(&rdev->mtx);
1729 if (netdev)
1730 dev_put(netdev);
1731 return result;
1732 }
1733
1734 static inline u64 wdev_id(struct wireless_dev *wdev)
1735 {
1736 return (u64)wdev->identifier |
1737 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1738 }
1739
1740 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
1741 struct cfg80211_registered_device *rdev,
1742 struct wireless_dev *wdev)
1743 {
1744 struct net_device *dev = wdev->netdev;
1745 void *hdr;
1746
1747 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1748 if (!hdr)
1749 return -1;
1750
1751 if (dev &&
1752 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1753 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1754 goto nla_put_failure;
1755
1756 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1757 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1758 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1759 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1760 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1761 rdev->devlist_generation ^
1762 (cfg80211_rdev_list_generation << 2)))
1763 goto nla_put_failure;
1764
1765 if (rdev->ops->get_channel) {
1766 struct ieee80211_channel *chan;
1767 enum nl80211_channel_type channel_type;
1768
1769 chan = rdev->ops->get_channel(&rdev->wiphy, wdev,
1770 &channel_type);
1771 if (chan &&
1772 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1773 chan->center_freq) ||
1774 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1775 channel_type)))
1776 goto nla_put_failure;
1777 }
1778
1779 return genlmsg_end(msg, hdr);
1780
1781 nla_put_failure:
1782 genlmsg_cancel(msg, hdr);
1783 return -EMSGSIZE;
1784 }
1785
1786 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1787 {
1788 int wp_idx = 0;
1789 int if_idx = 0;
1790 int wp_start = cb->args[0];
1791 int if_start = cb->args[1];
1792 struct cfg80211_registered_device *rdev;
1793 struct wireless_dev *wdev;
1794
1795 mutex_lock(&cfg80211_mutex);
1796 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1797 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1798 continue;
1799 if (wp_idx < wp_start) {
1800 wp_idx++;
1801 continue;
1802 }
1803 if_idx = 0;
1804
1805 mutex_lock(&rdev->devlist_mtx);
1806 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1807 if (if_idx < if_start) {
1808 if_idx++;
1809 continue;
1810 }
1811 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
1812 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1813 rdev, wdev) < 0) {
1814 mutex_unlock(&rdev->devlist_mtx);
1815 goto out;
1816 }
1817 if_idx++;
1818 }
1819 mutex_unlock(&rdev->devlist_mtx);
1820
1821 wp_idx++;
1822 }
1823 out:
1824 mutex_unlock(&cfg80211_mutex);
1825
1826 cb->args[0] = wp_idx;
1827 cb->args[1] = if_idx;
1828
1829 return skb->len;
1830 }
1831
1832 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1833 {
1834 struct sk_buff *msg;
1835 struct cfg80211_registered_device *dev = info->user_ptr[0];
1836 struct wireless_dev *wdev = info->user_ptr[1];
1837
1838 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1839 if (!msg)
1840 return -ENOMEM;
1841
1842 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
1843 dev, wdev) < 0) {
1844 nlmsg_free(msg);
1845 return -ENOBUFS;
1846 }
1847
1848 return genlmsg_reply(msg, info);
1849 }
1850
1851 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1852 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1853 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1854 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1855 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1856 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1857 };
1858
1859 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1860 {
1861 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1862 int flag;
1863
1864 *mntrflags = 0;
1865
1866 if (!nla)
1867 return -EINVAL;
1868
1869 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1870 nla, mntr_flags_policy))
1871 return -EINVAL;
1872
1873 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1874 if (flags[flag])
1875 *mntrflags |= (1<<flag);
1876
1877 return 0;
1878 }
1879
1880 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1881 struct net_device *netdev, u8 use_4addr,
1882 enum nl80211_iftype iftype)
1883 {
1884 if (!use_4addr) {
1885 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1886 return -EBUSY;
1887 return 0;
1888 }
1889
1890 switch (iftype) {
1891 case NL80211_IFTYPE_AP_VLAN:
1892 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1893 return 0;
1894 break;
1895 case NL80211_IFTYPE_STATION:
1896 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1897 return 0;
1898 break;
1899 default:
1900 break;
1901 }
1902
1903 return -EOPNOTSUPP;
1904 }
1905
1906 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1907 {
1908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1909 struct vif_params params;
1910 int err;
1911 enum nl80211_iftype otype, ntype;
1912 struct net_device *dev = info->user_ptr[1];
1913 u32 _flags, *flags = NULL;
1914 bool change = false;
1915
1916 memset(&params, 0, sizeof(params));
1917
1918 otype = ntype = dev->ieee80211_ptr->iftype;
1919
1920 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1921 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1922 if (otype != ntype)
1923 change = true;
1924 if (ntype > NL80211_IFTYPE_MAX)
1925 return -EINVAL;
1926 }
1927
1928 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1929 struct wireless_dev *wdev = dev->ieee80211_ptr;
1930
1931 if (ntype != NL80211_IFTYPE_MESH_POINT)
1932 return -EINVAL;
1933 if (netif_running(dev))
1934 return -EBUSY;
1935
1936 wdev_lock(wdev);
1937 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1938 IEEE80211_MAX_MESH_ID_LEN);
1939 wdev->mesh_id_up_len =
1940 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1941 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1942 wdev->mesh_id_up_len);
1943 wdev_unlock(wdev);
1944 }
1945
1946 if (info->attrs[NL80211_ATTR_4ADDR]) {
1947 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1948 change = true;
1949 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1950 if (err)
1951 return err;
1952 } else {
1953 params.use_4addr = -1;
1954 }
1955
1956 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1957 if (ntype != NL80211_IFTYPE_MONITOR)
1958 return -EINVAL;
1959 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1960 &_flags);
1961 if (err)
1962 return err;
1963
1964 flags = &_flags;
1965 change = true;
1966 }
1967
1968 if (change)
1969 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1970 else
1971 err = 0;
1972
1973 if (!err && params.use_4addr != -1)
1974 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1975
1976 return err;
1977 }
1978
1979 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1980 {
1981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1982 struct vif_params params;
1983 struct wireless_dev *wdev;
1984 struct sk_buff *msg;
1985 int err;
1986 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1987 u32 flags;
1988
1989 memset(&params, 0, sizeof(params));
1990
1991 if (!info->attrs[NL80211_ATTR_IFNAME])
1992 return -EINVAL;
1993
1994 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1995 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1996 if (type > NL80211_IFTYPE_MAX)
1997 return -EINVAL;
1998 }
1999
2000 if (!rdev->ops->add_virtual_intf ||
2001 !(rdev->wiphy.interface_modes & (1 << type)))
2002 return -EOPNOTSUPP;
2003
2004 if (info->attrs[NL80211_ATTR_4ADDR]) {
2005 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2006 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2007 if (err)
2008 return err;
2009 }
2010
2011 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2012 if (!msg)
2013 return -ENOMEM;
2014
2015 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2016 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2017 &flags);
2018 wdev = rdev->ops->add_virtual_intf(&rdev->wiphy,
2019 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2020 type, err ? NULL : &flags, &params);
2021 if (IS_ERR(wdev)) {
2022 nlmsg_free(msg);
2023 return PTR_ERR(wdev);
2024 }
2025
2026 switch (type) {
2027 case NL80211_IFTYPE_MESH_POINT:
2028 if (!info->attrs[NL80211_ATTR_MESH_ID])
2029 break;
2030 wdev_lock(wdev);
2031 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2032 IEEE80211_MAX_MESH_ID_LEN);
2033 wdev->mesh_id_up_len =
2034 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2035 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2036 wdev->mesh_id_up_len);
2037 wdev_unlock(wdev);
2038 break;
2039 case NL80211_IFTYPE_P2P_DEVICE:
2040 /*
2041 * P2P Device doesn't have a netdev, so doesn't go
2042 * through the netdev notifier and must be added here
2043 */
2044 mutex_init(&wdev->mtx);
2045 INIT_LIST_HEAD(&wdev->event_list);
2046 spin_lock_init(&wdev->event_lock);
2047 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2048 spin_lock_init(&wdev->mgmt_registrations_lock);
2049
2050 mutex_lock(&rdev->devlist_mtx);
2051 wdev->identifier = ++rdev->wdev_id;
2052 list_add_rcu(&wdev->list, &rdev->wdev_list);
2053 rdev->devlist_generation++;
2054 mutex_unlock(&rdev->devlist_mtx);
2055 break;
2056 default:
2057 break;
2058 }
2059
2060 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2061 rdev, wdev) < 0) {
2062 nlmsg_free(msg);
2063 return -ENOBUFS;
2064 }
2065
2066 return genlmsg_reply(msg, info);
2067 }
2068
2069 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2070 {
2071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2072 struct wireless_dev *wdev = info->user_ptr[1];
2073
2074 if (!rdev->ops->del_virtual_intf)
2075 return -EOPNOTSUPP;
2076
2077 /*
2078 * If we remove a wireless device without a netdev then clear
2079 * user_ptr[1] so that nl80211_post_doit won't dereference it
2080 * to check if it needs to do dev_put(). Otherwise it crashes
2081 * since the wdev has been freed, unlike with a netdev where
2082 * we need the dev_put() for the netdev to really be freed.
2083 */
2084 if (!wdev->netdev)
2085 info->user_ptr[1] = NULL;
2086
2087 return rdev->ops->del_virtual_intf(&rdev->wiphy, wdev);
2088 }
2089
2090 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2091 {
2092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2093 struct net_device *dev = info->user_ptr[1];
2094 u16 noack_map;
2095
2096 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2097 return -EINVAL;
2098
2099 if (!rdev->ops->set_noack_map)
2100 return -EOPNOTSUPP;
2101
2102 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2103
2104 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
2105 }
2106
2107 struct get_key_cookie {
2108 struct sk_buff *msg;
2109 int error;
2110 int idx;
2111 };
2112
2113 static void get_key_callback(void *c, struct key_params *params)
2114 {
2115 struct nlattr *key;
2116 struct get_key_cookie *cookie = c;
2117
2118 if ((params->key &&
2119 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2120 params->key_len, params->key)) ||
2121 (params->seq &&
2122 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2123 params->seq_len, params->seq)) ||
2124 (params->cipher &&
2125 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2126 params->cipher)))
2127 goto nla_put_failure;
2128
2129 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2130 if (!key)
2131 goto nla_put_failure;
2132
2133 if ((params->key &&
2134 nla_put(cookie->msg, NL80211_KEY_DATA,
2135 params->key_len, params->key)) ||
2136 (params->seq &&
2137 nla_put(cookie->msg, NL80211_KEY_SEQ,
2138 params->seq_len, params->seq)) ||
2139 (params->cipher &&
2140 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2141 params->cipher)))
2142 goto nla_put_failure;
2143
2144 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2145 goto nla_put_failure;
2146
2147 nla_nest_end(cookie->msg, key);
2148
2149 return;
2150 nla_put_failure:
2151 cookie->error = 1;
2152 }
2153
2154 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2155 {
2156 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2157 int err;
2158 struct net_device *dev = info->user_ptr[1];
2159 u8 key_idx = 0;
2160 const u8 *mac_addr = NULL;
2161 bool pairwise;
2162 struct get_key_cookie cookie = {
2163 .error = 0,
2164 };
2165 void *hdr;
2166 struct sk_buff *msg;
2167
2168 if (info->attrs[NL80211_ATTR_KEY_IDX])
2169 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2170
2171 if (key_idx > 5)
2172 return -EINVAL;
2173
2174 if (info->attrs[NL80211_ATTR_MAC])
2175 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2176
2177 pairwise = !!mac_addr;
2178 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2179 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2180 if (kt >= NUM_NL80211_KEYTYPES)
2181 return -EINVAL;
2182 if (kt != NL80211_KEYTYPE_GROUP &&
2183 kt != NL80211_KEYTYPE_PAIRWISE)
2184 return -EINVAL;
2185 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2186 }
2187
2188 if (!rdev->ops->get_key)
2189 return -EOPNOTSUPP;
2190
2191 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2192 if (!msg)
2193 return -ENOMEM;
2194
2195 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2196 NL80211_CMD_NEW_KEY);
2197 if (IS_ERR(hdr))
2198 return PTR_ERR(hdr);
2199
2200 cookie.msg = msg;
2201 cookie.idx = key_idx;
2202
2203 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2204 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2205 goto nla_put_failure;
2206 if (mac_addr &&
2207 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2208 goto nla_put_failure;
2209
2210 if (pairwise && mac_addr &&
2211 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2212 return -ENOENT;
2213
2214 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2215 mac_addr, &cookie, get_key_callback);
2216
2217 if (err)
2218 goto free_msg;
2219
2220 if (cookie.error)
2221 goto nla_put_failure;
2222
2223 genlmsg_end(msg, hdr);
2224 return genlmsg_reply(msg, info);
2225
2226 nla_put_failure:
2227 err = -ENOBUFS;
2228 free_msg:
2229 nlmsg_free(msg);
2230 return err;
2231 }
2232
2233 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2234 {
2235 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2236 struct key_parse key;
2237 int err;
2238 struct net_device *dev = info->user_ptr[1];
2239
2240 err = nl80211_parse_key(info, &key);
2241 if (err)
2242 return err;
2243
2244 if (key.idx < 0)
2245 return -EINVAL;
2246
2247 /* only support setting default key */
2248 if (!key.def && !key.defmgmt)
2249 return -EINVAL;
2250
2251 wdev_lock(dev->ieee80211_ptr);
2252
2253 if (key.def) {
2254 if (!rdev->ops->set_default_key) {
2255 err = -EOPNOTSUPP;
2256 goto out;
2257 }
2258
2259 err = nl80211_key_allowed(dev->ieee80211_ptr);
2260 if (err)
2261 goto out;
2262
2263 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2264 key.def_uni, key.def_multi);
2265
2266 if (err)
2267 goto out;
2268
2269 #ifdef CONFIG_CFG80211_WEXT
2270 dev->ieee80211_ptr->wext.default_key = key.idx;
2271 #endif
2272 } else {
2273 if (key.def_uni || !key.def_multi) {
2274 err = -EINVAL;
2275 goto out;
2276 }
2277
2278 if (!rdev->ops->set_default_mgmt_key) {
2279 err = -EOPNOTSUPP;
2280 goto out;
2281 }
2282
2283 err = nl80211_key_allowed(dev->ieee80211_ptr);
2284 if (err)
2285 goto out;
2286
2287 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2288 dev, key.idx);
2289 if (err)
2290 goto out;
2291
2292 #ifdef CONFIG_CFG80211_WEXT
2293 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2294 #endif
2295 }
2296
2297 out:
2298 wdev_unlock(dev->ieee80211_ptr);
2299
2300 return err;
2301 }
2302
2303 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2304 {
2305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2306 int err;
2307 struct net_device *dev = info->user_ptr[1];
2308 struct key_parse key;
2309 const u8 *mac_addr = NULL;
2310
2311 err = nl80211_parse_key(info, &key);
2312 if (err)
2313 return err;
2314
2315 if (!key.p.key)
2316 return -EINVAL;
2317
2318 if (info->attrs[NL80211_ATTR_MAC])
2319 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2320
2321 if (key.type == -1) {
2322 if (mac_addr)
2323 key.type = NL80211_KEYTYPE_PAIRWISE;
2324 else
2325 key.type = NL80211_KEYTYPE_GROUP;
2326 }
2327
2328 /* for now */
2329 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2330 key.type != NL80211_KEYTYPE_GROUP)
2331 return -EINVAL;
2332
2333 if (!rdev->ops->add_key)
2334 return -EOPNOTSUPP;
2335
2336 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2337 key.type == NL80211_KEYTYPE_PAIRWISE,
2338 mac_addr))
2339 return -EINVAL;
2340
2341 wdev_lock(dev->ieee80211_ptr);
2342 err = nl80211_key_allowed(dev->ieee80211_ptr);
2343 if (!err)
2344 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2345 key.type == NL80211_KEYTYPE_PAIRWISE,
2346 mac_addr, &key.p);
2347 wdev_unlock(dev->ieee80211_ptr);
2348
2349 return err;
2350 }
2351
2352 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2353 {
2354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2355 int err;
2356 struct net_device *dev = info->user_ptr[1];
2357 u8 *mac_addr = NULL;
2358 struct key_parse key;
2359
2360 err = nl80211_parse_key(info, &key);
2361 if (err)
2362 return err;
2363
2364 if (info->attrs[NL80211_ATTR_MAC])
2365 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2366
2367 if (key.type == -1) {
2368 if (mac_addr)
2369 key.type = NL80211_KEYTYPE_PAIRWISE;
2370 else
2371 key.type = NL80211_KEYTYPE_GROUP;
2372 }
2373
2374 /* for now */
2375 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2376 key.type != NL80211_KEYTYPE_GROUP)
2377 return -EINVAL;
2378
2379 if (!rdev->ops->del_key)
2380 return -EOPNOTSUPP;
2381
2382 wdev_lock(dev->ieee80211_ptr);
2383 err = nl80211_key_allowed(dev->ieee80211_ptr);
2384
2385 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2386 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2387 err = -ENOENT;
2388
2389 if (!err)
2390 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2391 key.type == NL80211_KEYTYPE_PAIRWISE,
2392 mac_addr);
2393
2394 #ifdef CONFIG_CFG80211_WEXT
2395 if (!err) {
2396 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2397 dev->ieee80211_ptr->wext.default_key = -1;
2398 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2399 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2400 }
2401 #endif
2402 wdev_unlock(dev->ieee80211_ptr);
2403
2404 return err;
2405 }
2406
2407 static int nl80211_parse_beacon(struct genl_info *info,
2408 struct cfg80211_beacon_data *bcn)
2409 {
2410 bool haveinfo = false;
2411
2412 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2413 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2414 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2415 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2416 return -EINVAL;
2417
2418 memset(bcn, 0, sizeof(*bcn));
2419
2420 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2421 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2422 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2423 if (!bcn->head_len)
2424 return -EINVAL;
2425 haveinfo = true;
2426 }
2427
2428 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2429 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2430 bcn->tail_len =
2431 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2432 haveinfo = true;
2433 }
2434
2435 if (!haveinfo)
2436 return -EINVAL;
2437
2438 if (info->attrs[NL80211_ATTR_IE]) {
2439 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2440 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2441 }
2442
2443 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2444 bcn->proberesp_ies =
2445 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2446 bcn->proberesp_ies_len =
2447 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2448 }
2449
2450 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2451 bcn->assocresp_ies =
2452 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2453 bcn->assocresp_ies_len =
2454 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2455 }
2456
2457 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2458 bcn->probe_resp =
2459 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2460 bcn->probe_resp_len =
2461 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2462 }
2463
2464 return 0;
2465 }
2466
2467 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2468 struct cfg80211_ap_settings *params)
2469 {
2470 struct wireless_dev *wdev;
2471 bool ret = false;
2472
2473 mutex_lock(&rdev->devlist_mtx);
2474
2475 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2476 if (wdev->iftype != NL80211_IFTYPE_AP &&
2477 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2478 continue;
2479
2480 if (!wdev->preset_chan)
2481 continue;
2482
2483 params->channel = wdev->preset_chan;
2484 params->channel_type = wdev->preset_chantype;
2485 ret = true;
2486 break;
2487 }
2488
2489 mutex_unlock(&rdev->devlist_mtx);
2490
2491 return ret;
2492 }
2493
2494 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2495 enum nl80211_auth_type auth_type,
2496 enum nl80211_commands cmd)
2497 {
2498 if (auth_type > NL80211_AUTHTYPE_MAX)
2499 return false;
2500
2501 switch (cmd) {
2502 case NL80211_CMD_AUTHENTICATE:
2503 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2504 auth_type == NL80211_AUTHTYPE_SAE)
2505 return false;
2506 return true;
2507 case NL80211_CMD_CONNECT:
2508 case NL80211_CMD_START_AP:
2509 /* SAE not supported yet */
2510 if (auth_type == NL80211_AUTHTYPE_SAE)
2511 return false;
2512 return true;
2513 default:
2514 return false;
2515 }
2516 }
2517
2518 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2519 {
2520 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2521 struct net_device *dev = info->user_ptr[1];
2522 struct wireless_dev *wdev = dev->ieee80211_ptr;
2523 struct cfg80211_ap_settings params;
2524 int err;
2525
2526 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2527 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2528 return -EOPNOTSUPP;
2529
2530 if (!rdev->ops->start_ap)
2531 return -EOPNOTSUPP;
2532
2533 if (wdev->beacon_interval)
2534 return -EALREADY;
2535
2536 memset(&params, 0, sizeof(params));
2537
2538 /* these are required for START_AP */
2539 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2540 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2541 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2542 return -EINVAL;
2543
2544 err = nl80211_parse_beacon(info, &params.beacon);
2545 if (err)
2546 return err;
2547
2548 params.beacon_interval =
2549 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2550 params.dtim_period =
2551 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2552
2553 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2554 if (err)
2555 return err;
2556
2557 /*
2558 * In theory, some of these attributes should be required here
2559 * but since they were not used when the command was originally
2560 * added, keep them optional for old user space programs to let
2561 * them continue to work with drivers that do not need the
2562 * additional information -- drivers must check!
2563 */
2564 if (info->attrs[NL80211_ATTR_SSID]) {
2565 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2566 params.ssid_len =
2567 nla_len(info->attrs[NL80211_ATTR_SSID]);
2568 if (params.ssid_len == 0 ||
2569 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2570 return -EINVAL;
2571 }
2572
2573 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2574 params.hidden_ssid = nla_get_u32(
2575 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2576 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2577 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2578 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2579 return -EINVAL;
2580 }
2581
2582 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2583
2584 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2585 params.auth_type = nla_get_u32(
2586 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2587 if (!nl80211_valid_auth_type(rdev, params.auth_type,
2588 NL80211_CMD_START_AP))
2589 return -EINVAL;
2590 } else
2591 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2592
2593 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2594 NL80211_MAX_NR_CIPHER_SUITES);
2595 if (err)
2596 return err;
2597
2598 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2599 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2600 return -EOPNOTSUPP;
2601 params.inactivity_timeout = nla_get_u16(
2602 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2603 }
2604
2605 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2606 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2607
2608 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2609 !nl80211_valid_channel_type(info, &channel_type))
2610 return -EINVAL;
2611
2612 params.channel = rdev_freq_to_chan(rdev,
2613 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2614 channel_type);
2615 if (!params.channel)
2616 return -EINVAL;
2617 params.channel_type = channel_type;
2618 } else if (wdev->preset_chan) {
2619 params.channel = wdev->preset_chan;
2620 params.channel_type = wdev->preset_chantype;
2621 } else if (!nl80211_get_ap_channel(rdev, &params))
2622 return -EINVAL;
2623
2624 if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2625 params.channel_type))
2626 return -EINVAL;
2627
2628 mutex_lock(&rdev->devlist_mtx);
2629 err = cfg80211_can_use_chan(rdev, wdev, params.channel,
2630 CHAN_MODE_SHARED);
2631 mutex_unlock(&rdev->devlist_mtx);
2632
2633 if (err)
2634 return err;
2635
2636 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2637 if (!err) {
2638 wdev->preset_chan = params.channel;
2639 wdev->preset_chantype = params.channel_type;
2640 wdev->beacon_interval = params.beacon_interval;
2641 wdev->channel = params.channel;
2642 }
2643 return err;
2644 }
2645
2646 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2647 {
2648 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2649 struct net_device *dev = info->user_ptr[1];
2650 struct wireless_dev *wdev = dev->ieee80211_ptr;
2651 struct cfg80211_beacon_data params;
2652 int err;
2653
2654 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2655 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2656 return -EOPNOTSUPP;
2657
2658 if (!rdev->ops->change_beacon)
2659 return -EOPNOTSUPP;
2660
2661 if (!wdev->beacon_interval)
2662 return -EINVAL;
2663
2664 err = nl80211_parse_beacon(info, &params);
2665 if (err)
2666 return err;
2667
2668 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2669 }
2670
2671 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2672 {
2673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2674 struct net_device *dev = info->user_ptr[1];
2675
2676 return cfg80211_stop_ap(rdev, dev);
2677 }
2678
2679 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2680 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2681 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2682 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2683 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2684 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2685 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2686 };
2687
2688 static int parse_station_flags(struct genl_info *info,
2689 enum nl80211_iftype iftype,
2690 struct station_parameters *params)
2691 {
2692 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2693 struct nlattr *nla;
2694 int flag;
2695
2696 /*
2697 * Try parsing the new attribute first so userspace
2698 * can specify both for older kernels.
2699 */
2700 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2701 if (nla) {
2702 struct nl80211_sta_flag_update *sta_flags;
2703
2704 sta_flags = nla_data(nla);
2705 params->sta_flags_mask = sta_flags->mask;
2706 params->sta_flags_set = sta_flags->set;
2707 if ((params->sta_flags_mask |
2708 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2709 return -EINVAL;
2710 return 0;
2711 }
2712
2713 /* if present, parse the old attribute */
2714
2715 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2716 if (!nla)
2717 return 0;
2718
2719 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2720 nla, sta_flags_policy))
2721 return -EINVAL;
2722
2723 /*
2724 * Only allow certain flags for interface types so that
2725 * other attributes are silently ignored. Remember that
2726 * this is backward compatibility code with old userspace
2727 * and shouldn't be hit in other cases anyway.
2728 */
2729 switch (iftype) {
2730 case NL80211_IFTYPE_AP:
2731 case NL80211_IFTYPE_AP_VLAN:
2732 case NL80211_IFTYPE_P2P_GO:
2733 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2734 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2735 BIT(NL80211_STA_FLAG_WME) |
2736 BIT(NL80211_STA_FLAG_MFP);
2737 break;
2738 case NL80211_IFTYPE_P2P_CLIENT:
2739 case NL80211_IFTYPE_STATION:
2740 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2741 BIT(NL80211_STA_FLAG_TDLS_PEER);
2742 break;
2743 case NL80211_IFTYPE_MESH_POINT:
2744 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2745 BIT(NL80211_STA_FLAG_MFP) |
2746 BIT(NL80211_STA_FLAG_AUTHORIZED);
2747 default:
2748 return -EINVAL;
2749 }
2750
2751 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2752 if (flags[flag]) {
2753 params->sta_flags_set |= (1<<flag);
2754
2755 /* no longer support new API additions in old API */
2756 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2757 return -EINVAL;
2758 }
2759 }
2760
2761 return 0;
2762 }
2763
2764 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2765 int attr)
2766 {
2767 struct nlattr *rate;
2768 u32 bitrate;
2769 u16 bitrate_compat;
2770
2771 rate = nla_nest_start(msg, attr);
2772 if (!rate)
2773 goto nla_put_failure;
2774
2775 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2776 bitrate = cfg80211_calculate_bitrate(info);
2777 /* report 16-bit bitrate only if we can */
2778 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2779 if ((bitrate > 0 &&
2780 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) ||
2781 (bitrate_compat > 0 &&
2782 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) ||
2783 ((info->flags & RATE_INFO_FLAGS_MCS) &&
2784 nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2785 ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2786 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2787 ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2788 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2789 goto nla_put_failure;
2790
2791 nla_nest_end(msg, rate);
2792 return true;
2793
2794 nla_put_failure:
2795 return false;
2796 }
2797
2798 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
2799 int flags,
2800 struct cfg80211_registered_device *rdev,
2801 struct net_device *dev,
2802 const u8 *mac_addr, struct station_info *sinfo)
2803 {
2804 void *hdr;
2805 struct nlattr *sinfoattr, *bss_param;
2806
2807 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
2808 if (!hdr)
2809 return -1;
2810
2811 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2812 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2813 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2814 goto nla_put_failure;
2815
2816 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2817 if (!sinfoattr)
2818 goto nla_put_failure;
2819 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2820 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2821 sinfo->connected_time))
2822 goto nla_put_failure;
2823 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2824 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2825 sinfo->inactive_time))
2826 goto nla_put_failure;
2827 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2828 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2829 sinfo->rx_bytes))
2830 goto nla_put_failure;
2831 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2832 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2833 sinfo->tx_bytes))
2834 goto nla_put_failure;
2835 if ((sinfo->filled & STATION_INFO_LLID) &&
2836 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2837 goto nla_put_failure;
2838 if ((sinfo->filled & STATION_INFO_PLID) &&
2839 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2840 goto nla_put_failure;
2841 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2842 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2843 sinfo->plink_state))
2844 goto nla_put_failure;
2845 switch (rdev->wiphy.signal_type) {
2846 case CFG80211_SIGNAL_TYPE_MBM:
2847 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2848 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2849 sinfo->signal))
2850 goto nla_put_failure;
2851 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2852 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2853 sinfo->signal_avg))
2854 goto nla_put_failure;
2855 break;
2856 default:
2857 break;
2858 }
2859 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2860 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2861 NL80211_STA_INFO_TX_BITRATE))
2862 goto nla_put_failure;
2863 }
2864 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2865 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2866 NL80211_STA_INFO_RX_BITRATE))
2867 goto nla_put_failure;
2868 }
2869 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2870 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2871 sinfo->rx_packets))
2872 goto nla_put_failure;
2873 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2874 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2875 sinfo->tx_packets))
2876 goto nla_put_failure;
2877 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2878 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2879 sinfo->tx_retries))
2880 goto nla_put_failure;
2881 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2882 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2883 sinfo->tx_failed))
2884 goto nla_put_failure;
2885 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2886 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2887 sinfo->beacon_loss_count))
2888 goto nla_put_failure;
2889 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2890 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2891 if (!bss_param)
2892 goto nla_put_failure;
2893
2894 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2895 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2896 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2897 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2898 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2899 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2900 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2901 sinfo->bss_param.dtim_period) ||
2902 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2903 sinfo->bss_param.beacon_interval))
2904 goto nla_put_failure;
2905
2906 nla_nest_end(msg, bss_param);
2907 }
2908 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2909 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2910 sizeof(struct nl80211_sta_flag_update),
2911 &sinfo->sta_flags))
2912 goto nla_put_failure;
2913 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2914 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2915 sinfo->t_offset))
2916 goto nla_put_failure;
2917 nla_nest_end(msg, sinfoattr);
2918
2919 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2920 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2921 sinfo->assoc_req_ies))
2922 goto nla_put_failure;
2923
2924 return genlmsg_end(msg, hdr);
2925
2926 nla_put_failure:
2927 genlmsg_cancel(msg, hdr);
2928 return -EMSGSIZE;
2929 }
2930
2931 static int nl80211_dump_station(struct sk_buff *skb,
2932 struct netlink_callback *cb)
2933 {
2934 struct station_info sinfo;
2935 struct cfg80211_registered_device *dev;
2936 struct net_device *netdev;
2937 u8 mac_addr[ETH_ALEN];
2938 int sta_idx = cb->args[1];
2939 int err;
2940
2941 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2942 if (err)
2943 return err;
2944
2945 if (!dev->ops->dump_station) {
2946 err = -EOPNOTSUPP;
2947 goto out_err;
2948 }
2949
2950 while (1) {
2951 memset(&sinfo, 0, sizeof(sinfo));
2952 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2953 mac_addr, &sinfo);
2954 if (err == -ENOENT)
2955 break;
2956 if (err)
2957 goto out_err;
2958
2959 if (nl80211_send_station(skb,
2960 NETLINK_CB(cb->skb).portid,
2961 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2962 dev, netdev, mac_addr,
2963 &sinfo) < 0)
2964 goto out;
2965
2966 sta_idx++;
2967 }
2968
2969
2970 out:
2971 cb->args[1] = sta_idx;
2972 err = skb->len;
2973 out_err:
2974 nl80211_finish_netdev_dump(dev);
2975
2976 return err;
2977 }
2978
2979 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2980 {
2981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2982 struct net_device *dev = info->user_ptr[1];
2983 struct station_info sinfo;
2984 struct sk_buff *msg;
2985 u8 *mac_addr = NULL;
2986 int err;
2987
2988 memset(&sinfo, 0, sizeof(sinfo));
2989
2990 if (!info->attrs[NL80211_ATTR_MAC])
2991 return -EINVAL;
2992
2993 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2994
2995 if (!rdev->ops->get_station)
2996 return -EOPNOTSUPP;
2997
2998 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2999 if (err)
3000 return err;
3001
3002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3003 if (!msg)
3004 return -ENOMEM;
3005
3006 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3007 rdev, dev, mac_addr, &sinfo) < 0) {
3008 nlmsg_free(msg);
3009 return -ENOBUFS;
3010 }
3011
3012 return genlmsg_reply(msg, info);
3013 }
3014
3015 /*
3016 * Get vlan interface making sure it is running and on the right wiphy.
3017 */
3018 static struct net_device *get_vlan(struct genl_info *info,
3019 struct cfg80211_registered_device *rdev)
3020 {
3021 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3022 struct net_device *v;
3023 int ret;
3024
3025 if (!vlanattr)
3026 return NULL;
3027
3028 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3029 if (!v)
3030 return ERR_PTR(-ENODEV);
3031
3032 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3033 ret = -EINVAL;
3034 goto error;
3035 }
3036
3037 if (!netif_running(v)) {
3038 ret = -ENETDOWN;
3039 goto error;
3040 }
3041
3042 return v;
3043 error:
3044 dev_put(v);
3045 return ERR_PTR(ret);
3046 }
3047
3048 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3049 {
3050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051 int err;
3052 struct net_device *dev = info->user_ptr[1];
3053 struct station_parameters params;
3054 u8 *mac_addr = NULL;
3055
3056 memset(&params, 0, sizeof(params));
3057
3058 params.listen_interval = -1;
3059 params.plink_state = -1;
3060
3061 if (info->attrs[NL80211_ATTR_STA_AID])
3062 return -EINVAL;
3063
3064 if (!info->attrs[NL80211_ATTR_MAC])
3065 return -EINVAL;
3066
3067 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3068
3069 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3070 params.supported_rates =
3071 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3072 params.supported_rates_len =
3073 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3074 }
3075
3076 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3077 params.listen_interval =
3078 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3079
3080 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3081 params.ht_capa =
3082 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3083
3084 if (!rdev->ops->change_station)
3085 return -EOPNOTSUPP;
3086
3087 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3088 return -EINVAL;
3089
3090 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3091 params.plink_action =
3092 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3093
3094 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3095 params.plink_state =
3096 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3097
3098 switch (dev->ieee80211_ptr->iftype) {
3099 case NL80211_IFTYPE_AP:
3100 case NL80211_IFTYPE_AP_VLAN:
3101 case NL80211_IFTYPE_P2P_GO:
3102 /* disallow mesh-specific things */
3103 if (params.plink_action)
3104 return -EINVAL;
3105
3106 /* TDLS can't be set, ... */
3107 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3108 return -EINVAL;
3109 /*
3110 * ... but don't bother the driver with it. This works around
3111 * a hostapd/wpa_supplicant issue -- it always includes the
3112 * TLDS_PEER flag in the mask even for AP mode.
3113 */
3114 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3115
3116 /* accept only the listed bits */
3117 if (params.sta_flags_mask &
3118 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3119 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3120 BIT(NL80211_STA_FLAG_WME) |
3121 BIT(NL80211_STA_FLAG_MFP)))
3122 return -EINVAL;
3123
3124 /* must be last in here for error handling */
3125 params.vlan = get_vlan(info, rdev);
3126 if (IS_ERR(params.vlan))
3127 return PTR_ERR(params.vlan);
3128 break;
3129 case NL80211_IFTYPE_P2P_CLIENT:
3130 case NL80211_IFTYPE_STATION:
3131 /*
3132 * Don't allow userspace to change the TDLS_PEER flag,
3133 * but silently ignore attempts to change it since we
3134 * don't have state here to verify that it doesn't try
3135 * to change the flag.
3136 */
3137 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3138 /* fall through */
3139 case NL80211_IFTYPE_ADHOC:
3140 /* disallow things sta doesn't support */
3141 if (params.plink_action)
3142 return -EINVAL;
3143 if (params.ht_capa)
3144 return -EINVAL;
3145 if (params.listen_interval >= 0)
3146 return -EINVAL;
3147 /* reject any changes other than AUTHORIZED */
3148 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3149 return -EINVAL;
3150 break;
3151 case NL80211_IFTYPE_MESH_POINT:
3152 /* disallow things mesh doesn't support */
3153 if (params.vlan)
3154 return -EINVAL;
3155 if (params.ht_capa)
3156 return -EINVAL;
3157 if (params.listen_interval >= 0)
3158 return -EINVAL;
3159 /*
3160 * No special handling for TDLS here -- the userspace
3161 * mesh code doesn't have this bug.
3162 */
3163 if (params.sta_flags_mask &
3164 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3165 BIT(NL80211_STA_FLAG_MFP) |
3166 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3167 return -EINVAL;
3168 break;
3169 default:
3170 return -EOPNOTSUPP;
3171 }
3172
3173 /* be aware of params.vlan when changing code here */
3174
3175 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
3176
3177 if (params.vlan)
3178 dev_put(params.vlan);
3179
3180 return err;
3181 }
3182
3183 static struct nla_policy
3184 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3185 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3186 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3187 };
3188
3189 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3190 {
3191 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3192 int err;
3193 struct net_device *dev = info->user_ptr[1];
3194 struct station_parameters params;
3195 u8 *mac_addr = NULL;
3196
3197 memset(&params, 0, sizeof(params));
3198
3199 if (!info->attrs[NL80211_ATTR_MAC])
3200 return -EINVAL;
3201
3202 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3203 return -EINVAL;
3204
3205 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3206 return -EINVAL;
3207
3208 if (!info->attrs[NL80211_ATTR_STA_AID])
3209 return -EINVAL;
3210
3211 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3212 params.supported_rates =
3213 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3214 params.supported_rates_len =
3215 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3216 params.listen_interval =
3217 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3218
3219 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3220 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3221 return -EINVAL;
3222
3223 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3224 params.ht_capa =
3225 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3226
3227 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3228 params.vht_capa =
3229 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3230
3231 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3232 params.plink_action =
3233 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3234
3235 if (!rdev->ops->add_station)
3236 return -EOPNOTSUPP;
3237
3238 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3239 return -EINVAL;
3240
3241 switch (dev->ieee80211_ptr->iftype) {
3242 case NL80211_IFTYPE_AP:
3243 case NL80211_IFTYPE_AP_VLAN:
3244 case NL80211_IFTYPE_P2P_GO:
3245 /* parse WME attributes if sta is WME capable */
3246 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3247 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3248 info->attrs[NL80211_ATTR_STA_WME]) {
3249 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3250 struct nlattr *nla;
3251
3252 nla = info->attrs[NL80211_ATTR_STA_WME];
3253 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3254 nl80211_sta_wme_policy);
3255 if (err)
3256 return err;
3257
3258 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3259 params.uapsd_queues =
3260 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3261 if (params.uapsd_queues &
3262 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3263 return -EINVAL;
3264
3265 if (tb[NL80211_STA_WME_MAX_SP])
3266 params.max_sp =
3267 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3268
3269 if (params.max_sp &
3270 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3271 return -EINVAL;
3272
3273 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3274 }
3275 /* TDLS peers cannot be added */
3276 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3277 return -EINVAL;
3278 /* but don't bother the driver with it */
3279 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3280
3281 /* must be last in here for error handling */
3282 params.vlan = get_vlan(info, rdev);
3283 if (IS_ERR(params.vlan))
3284 return PTR_ERR(params.vlan);
3285 break;
3286 case NL80211_IFTYPE_MESH_POINT:
3287 /* TDLS peers cannot be added */
3288 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3289 return -EINVAL;
3290 break;
3291 case NL80211_IFTYPE_STATION:
3292 /* Only TDLS peers can be added */
3293 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3294 return -EINVAL;
3295 /* Can only add if TDLS ... */
3296 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3297 return -EOPNOTSUPP;
3298 /* ... with external setup is supported */
3299 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3300 return -EOPNOTSUPP;
3301 break;
3302 default:
3303 return -EOPNOTSUPP;
3304 }
3305
3306 /* be aware of params.vlan when changing code here */
3307
3308 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3309
3310 if (params.vlan)
3311 dev_put(params.vlan);
3312 return err;
3313 }
3314
3315 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3316 {
3317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318 struct net_device *dev = info->user_ptr[1];
3319 u8 *mac_addr = NULL;
3320
3321 if (info->attrs[NL80211_ATTR_MAC])
3322 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3323
3324 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3325 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3326 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3327 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3328 return -EINVAL;
3329
3330 if (!rdev->ops->del_station)
3331 return -EOPNOTSUPP;
3332
3333 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3334 }
3335
3336 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
3337 int flags, struct net_device *dev,
3338 u8 *dst, u8 *next_hop,
3339 struct mpath_info *pinfo)
3340 {
3341 void *hdr;
3342 struct nlattr *pinfoattr;
3343
3344 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3345 if (!hdr)
3346 return -1;
3347
3348 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3349 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3350 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3351 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3352 goto nla_put_failure;
3353
3354 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3355 if (!pinfoattr)
3356 goto nla_put_failure;
3357 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3358 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3359 pinfo->frame_qlen))
3360 goto nla_put_failure;
3361 if (((pinfo->filled & MPATH_INFO_SN) &&
3362 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3363 ((pinfo->filled & MPATH_INFO_METRIC) &&
3364 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3365 pinfo->metric)) ||
3366 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3367 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3368 pinfo->exptime)) ||
3369 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3370 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3371 pinfo->flags)) ||
3372 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3373 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3374 pinfo->discovery_timeout)) ||
3375 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3376 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3377 pinfo->discovery_retries)))
3378 goto nla_put_failure;
3379
3380 nla_nest_end(msg, pinfoattr);
3381
3382 return genlmsg_end(msg, hdr);
3383
3384 nla_put_failure:
3385 genlmsg_cancel(msg, hdr);
3386 return -EMSGSIZE;
3387 }
3388
3389 static int nl80211_dump_mpath(struct sk_buff *skb,
3390 struct netlink_callback *cb)
3391 {
3392 struct mpath_info pinfo;
3393 struct cfg80211_registered_device *dev;
3394 struct net_device *netdev;
3395 u8 dst[ETH_ALEN];
3396 u8 next_hop[ETH_ALEN];
3397 int path_idx = cb->args[1];
3398 int err;
3399
3400 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3401 if (err)
3402 return err;
3403
3404 if (!dev->ops->dump_mpath) {
3405 err = -EOPNOTSUPP;
3406 goto out_err;
3407 }
3408
3409 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3410 err = -EOPNOTSUPP;
3411 goto out_err;
3412 }
3413
3414 while (1) {
3415 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3416 dst, next_hop, &pinfo);
3417 if (err == -ENOENT)
3418 break;
3419 if (err)
3420 goto out_err;
3421
3422 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
3423 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3424 netdev, dst, next_hop,
3425 &pinfo) < 0)
3426 goto out;
3427
3428 path_idx++;
3429 }
3430
3431
3432 out:
3433 cb->args[1] = path_idx;
3434 err = skb->len;
3435 out_err:
3436 nl80211_finish_netdev_dump(dev);
3437 return err;
3438 }
3439
3440 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3441 {
3442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3443 int err;
3444 struct net_device *dev = info->user_ptr[1];
3445 struct mpath_info pinfo;
3446 struct sk_buff *msg;
3447 u8 *dst = NULL;
3448 u8 next_hop[ETH_ALEN];
3449
3450 memset(&pinfo, 0, sizeof(pinfo));
3451
3452 if (!info->attrs[NL80211_ATTR_MAC])
3453 return -EINVAL;
3454
3455 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3456
3457 if (!rdev->ops->get_mpath)
3458 return -EOPNOTSUPP;
3459
3460 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3461 return -EOPNOTSUPP;
3462
3463 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3464 if (err)
3465 return err;
3466
3467 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3468 if (!msg)
3469 return -ENOMEM;
3470
3471 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
3472 dev, dst, next_hop, &pinfo) < 0) {
3473 nlmsg_free(msg);
3474 return -ENOBUFS;
3475 }
3476
3477 return genlmsg_reply(msg, info);
3478 }
3479
3480 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3481 {
3482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3483 struct net_device *dev = info->user_ptr[1];
3484 u8 *dst = NULL;
3485 u8 *next_hop = NULL;
3486
3487 if (!info->attrs[NL80211_ATTR_MAC])
3488 return -EINVAL;
3489
3490 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3491 return -EINVAL;
3492
3493 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3494 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3495
3496 if (!rdev->ops->change_mpath)
3497 return -EOPNOTSUPP;
3498
3499 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3500 return -EOPNOTSUPP;
3501
3502 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3503 }
3504
3505 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3506 {
3507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3508 struct net_device *dev = info->user_ptr[1];
3509 u8 *dst = NULL;
3510 u8 *next_hop = NULL;
3511
3512 if (!info->attrs[NL80211_ATTR_MAC])
3513 return -EINVAL;
3514
3515 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3516 return -EINVAL;
3517
3518 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3519 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3520
3521 if (!rdev->ops->add_mpath)
3522 return -EOPNOTSUPP;
3523
3524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3525 return -EOPNOTSUPP;
3526
3527 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3528 }
3529
3530 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3531 {
3532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3533 struct net_device *dev = info->user_ptr[1];
3534 u8 *dst = NULL;
3535
3536 if (info->attrs[NL80211_ATTR_MAC])
3537 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3538
3539 if (!rdev->ops->del_mpath)
3540 return -EOPNOTSUPP;
3541
3542 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3543 }
3544
3545 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3546 {
3547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3548 struct net_device *dev = info->user_ptr[1];
3549 struct bss_parameters params;
3550
3551 memset(&params, 0, sizeof(params));
3552 /* default to not changing parameters */
3553 params.use_cts_prot = -1;
3554 params.use_short_preamble = -1;
3555 params.use_short_slot_time = -1;
3556 params.ap_isolate = -1;
3557 params.ht_opmode = -1;
3558
3559 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3560 params.use_cts_prot =
3561 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3562 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3563 params.use_short_preamble =
3564 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3565 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3566 params.use_short_slot_time =
3567 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3568 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3569 params.basic_rates =
3570 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3571 params.basic_rates_len =
3572 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3573 }
3574 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3575 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3576 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3577 params.ht_opmode =
3578 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3579
3580 if (!rdev->ops->change_bss)
3581 return -EOPNOTSUPP;
3582
3583 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3584 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3585 return -EOPNOTSUPP;
3586
3587 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3588 }
3589
3590 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3591 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3592 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3593 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3594 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3595 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3596 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3597 };
3598
3599 static int parse_reg_rule(struct nlattr *tb[],
3600 struct ieee80211_reg_rule *reg_rule)
3601 {
3602 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3603 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3604
3605 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3606 return -EINVAL;
3607 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3608 return -EINVAL;
3609 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3610 return -EINVAL;
3611 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3612 return -EINVAL;
3613 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3614 return -EINVAL;
3615
3616 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3617
3618 freq_range->start_freq_khz =
3619 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3620 freq_range->end_freq_khz =
3621 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3622 freq_range->max_bandwidth_khz =
3623 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3624
3625 power_rule->max_eirp =
3626 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3627
3628 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3629 power_rule->max_antenna_gain =
3630 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3631
3632 return 0;
3633 }
3634
3635 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3636 {
3637 int r;
3638 char *data = NULL;
3639 enum nl80211_user_reg_hint_type user_reg_hint_type;
3640
3641 /*
3642 * You should only get this when cfg80211 hasn't yet initialized
3643 * completely when built-in to the kernel right between the time
3644 * window between nl80211_init() and regulatory_init(), if that is
3645 * even possible.
3646 */
3647 mutex_lock(&cfg80211_mutex);
3648 if (unlikely(!cfg80211_regdomain)) {
3649 mutex_unlock(&cfg80211_mutex);
3650 return -EINPROGRESS;
3651 }
3652 mutex_unlock(&cfg80211_mutex);
3653
3654 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3655 return -EINVAL;
3656
3657 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3658
3659 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3660 user_reg_hint_type =
3661 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3662 else
3663 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3664
3665 switch (user_reg_hint_type) {
3666 case NL80211_USER_REG_HINT_USER:
3667 case NL80211_USER_REG_HINT_CELL_BASE:
3668 break;
3669 default:
3670 return -EINVAL;
3671 }
3672
3673 r = regulatory_hint_user(data, user_reg_hint_type);
3674
3675 return r;
3676 }
3677
3678 static int nl80211_get_mesh_config(struct sk_buff *skb,
3679 struct genl_info *info)
3680 {
3681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3682 struct net_device *dev = info->user_ptr[1];
3683 struct wireless_dev *wdev = dev->ieee80211_ptr;
3684 struct mesh_config cur_params;
3685 int err = 0;
3686 void *hdr;
3687 struct nlattr *pinfoattr;
3688 struct sk_buff *msg;
3689
3690 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3691 return -EOPNOTSUPP;
3692
3693 if (!rdev->ops->get_mesh_config)
3694 return -EOPNOTSUPP;
3695
3696 wdev_lock(wdev);
3697 /* If not connected, get default parameters */
3698 if (!wdev->mesh_id_len)
3699 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3700 else
3701 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3702 &cur_params);
3703 wdev_unlock(wdev);
3704
3705 if (err)
3706 return err;
3707
3708 /* Draw up a netlink message to send back */
3709 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3710 if (!msg)
3711 return -ENOMEM;
3712 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3713 NL80211_CMD_GET_MESH_CONFIG);
3714 if (!hdr)
3715 goto out;
3716 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3717 if (!pinfoattr)
3718 goto nla_put_failure;
3719 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3720 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3721 cur_params.dot11MeshRetryTimeout) ||
3722 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3723 cur_params.dot11MeshConfirmTimeout) ||
3724 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3725 cur_params.dot11MeshHoldingTimeout) ||
3726 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3727 cur_params.dot11MeshMaxPeerLinks) ||
3728 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3729 cur_params.dot11MeshMaxRetries) ||
3730 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3731 cur_params.dot11MeshTTL) ||
3732 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3733 cur_params.element_ttl) ||
3734 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3735 cur_params.auto_open_plinks) ||
3736 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3737 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3738 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3739 cur_params.dot11MeshHWMPmaxPREQretries) ||
3740 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3741 cur_params.path_refresh_time) ||
3742 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3743 cur_params.min_discovery_timeout) ||
3744 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3745 cur_params.dot11MeshHWMPactivePathTimeout) ||
3746 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3747 cur_params.dot11MeshHWMPpreqMinInterval) ||
3748 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3749 cur_params.dot11MeshHWMPperrMinInterval) ||
3750 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3751 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3752 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3753 cur_params.dot11MeshHWMPRootMode) ||
3754 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3755 cur_params.dot11MeshHWMPRannInterval) ||
3756 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3757 cur_params.dot11MeshGateAnnouncementProtocol) ||
3758 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3759 cur_params.dot11MeshForwarding) ||
3760 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3761 cur_params.rssi_threshold) ||
3762 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3763 cur_params.ht_opmode) ||
3764 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3765 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3766 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3767 cur_params.dot11MeshHWMProotInterval) ||
3768 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3769 cur_params.dot11MeshHWMPconfirmationInterval))
3770 goto nla_put_failure;
3771 nla_nest_end(msg, pinfoattr);
3772 genlmsg_end(msg, hdr);
3773 return genlmsg_reply(msg, info);
3774
3775 nla_put_failure:
3776 genlmsg_cancel(msg, hdr);
3777 out:
3778 nlmsg_free(msg);
3779 return -ENOBUFS;
3780 }
3781
3782 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3783 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3784 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3785 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3786 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3787 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3788 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3789 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3790 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3791 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3792 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3793 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3794 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3795 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3796 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3797 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3798 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3799 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3800 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3801 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3802 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3803 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3804 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3805 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3806 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3807 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3808 };
3809
3810 static const struct nla_policy
3811 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3812 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3813 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3814 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3815 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3816 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3817 .len = IEEE80211_MAX_DATA_LEN },
3818 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3819 };
3820
3821 static int nl80211_parse_mesh_config(struct genl_info *info,
3822 struct mesh_config *cfg,
3823 u32 *mask_out)
3824 {
3825 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3826 u32 mask = 0;
3827
3828 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3829 do {\
3830 if (table[attr_num]) {\
3831 cfg->param = nla_fn(table[attr_num]); \
3832 mask |= (1 << (attr_num - 1)); \
3833 } \
3834 } while (0);\
3835
3836
3837 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3838 return -EINVAL;
3839 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3840 info->attrs[NL80211_ATTR_MESH_CONFIG],
3841 nl80211_meshconf_params_policy))
3842 return -EINVAL;
3843
3844 /* This makes sure that there aren't more than 32 mesh config
3845 * parameters (otherwise our bitfield scheme would not work.) */
3846 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3847
3848 /* Fill in the params struct */
3849 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3850 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3851 nla_get_u16);
3852 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3853 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3854 nla_get_u16);
3855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3856 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3857 nla_get_u16);
3858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3859 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3860 nla_get_u16);
3861 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3862 mask, NL80211_MESHCONF_MAX_RETRIES,
3863 nla_get_u8);
3864 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3865 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3866 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3867 mask, NL80211_MESHCONF_ELEMENT_TTL,
3868 nla_get_u8);
3869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3870 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3871 nla_get_u8);
3872 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3873 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3874 nla_get_u32);
3875 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3876 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3877 nla_get_u8);
3878 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3879 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3880 nla_get_u32);
3881 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3882 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3883 nla_get_u16);
3884 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3885 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3886 nla_get_u32);
3887 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3888 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3889 nla_get_u16);
3890 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3891 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3892 nla_get_u16);
3893 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3894 dot11MeshHWMPnetDiameterTraversalTime, mask,
3895 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3896 nla_get_u16);
3897 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3898 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3899 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3900 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3901 nla_get_u16);
3902 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3903 dot11MeshGateAnnouncementProtocol, mask,
3904 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3905 nla_get_u8);
3906 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3907 mask, NL80211_MESHCONF_FORWARDING,
3908 nla_get_u8);
3909 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3910 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3911 nla_get_u32);
3912 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3913 mask, NL80211_MESHCONF_HT_OPMODE,
3914 nla_get_u16);
3915 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3916 mask,
3917 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3918 nla_get_u32);
3919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3920 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3921 nla_get_u16);
3922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3923 dot11MeshHWMPconfirmationInterval, mask,
3924 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3925 nla_get_u16);
3926 if (mask_out)
3927 *mask_out = mask;
3928
3929 return 0;
3930
3931 #undef FILL_IN_MESH_PARAM_IF_SET
3932 }
3933
3934 static int nl80211_parse_mesh_setup(struct genl_info *info,
3935 struct mesh_setup *setup)
3936 {
3937 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3938
3939 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3940 return -EINVAL;
3941 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3942 info->attrs[NL80211_ATTR_MESH_SETUP],
3943 nl80211_mesh_setup_params_policy))
3944 return -EINVAL;
3945
3946 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3947 setup->sync_method =
3948 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3949 IEEE80211_SYNC_METHOD_VENDOR :
3950 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3951
3952 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3953 setup->path_sel_proto =
3954 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3955 IEEE80211_PATH_PROTOCOL_VENDOR :
3956 IEEE80211_PATH_PROTOCOL_HWMP;
3957
3958 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3959 setup->path_metric =
3960 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3961 IEEE80211_PATH_METRIC_VENDOR :
3962 IEEE80211_PATH_METRIC_AIRTIME;
3963
3964
3965 if (tb[NL80211_MESH_SETUP_IE]) {
3966 struct nlattr *ieattr =
3967 tb[NL80211_MESH_SETUP_IE];
3968 if (!is_valid_ie_attr(ieattr))
3969 return -EINVAL;
3970 setup->ie = nla_data(ieattr);
3971 setup->ie_len = nla_len(ieattr);
3972 }
3973 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3974 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3975
3976 return 0;
3977 }
3978
3979 static int nl80211_update_mesh_config(struct sk_buff *skb,
3980 struct genl_info *info)
3981 {
3982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3983 struct net_device *dev = info->user_ptr[1];
3984 struct wireless_dev *wdev = dev->ieee80211_ptr;
3985 struct mesh_config cfg;
3986 u32 mask;
3987 int err;
3988
3989 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3990 return -EOPNOTSUPP;
3991
3992 if (!rdev->ops->update_mesh_config)
3993 return -EOPNOTSUPP;
3994
3995 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3996 if (err)
3997 return err;
3998
3999 wdev_lock(wdev);
4000 if (!wdev->mesh_id_len)
4001 err = -ENOLINK;
4002
4003 if (!err)
4004 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
4005 mask, &cfg);
4006
4007 wdev_unlock(wdev);
4008
4009 return err;
4010 }
4011
4012 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4013 {
4014 struct sk_buff *msg;
4015 void *hdr = NULL;
4016 struct nlattr *nl_reg_rules;
4017 unsigned int i;
4018 int err = -EINVAL;
4019
4020 mutex_lock(&cfg80211_mutex);
4021
4022 if (!cfg80211_regdomain)
4023 goto out;
4024
4025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4026 if (!msg) {
4027 err = -ENOBUFS;
4028 goto out;
4029 }
4030
4031 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4032 NL80211_CMD_GET_REG);
4033 if (!hdr)
4034 goto put_failure;
4035
4036 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4037 cfg80211_regdomain->alpha2) ||
4038 (cfg80211_regdomain->dfs_region &&
4039 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4040 cfg80211_regdomain->dfs_region)))
4041 goto nla_put_failure;
4042
4043 if (reg_last_request_cell_base() &&
4044 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4045 NL80211_USER_REG_HINT_CELL_BASE))
4046 goto nla_put_failure;
4047
4048 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4049 if (!nl_reg_rules)
4050 goto nla_put_failure;
4051
4052 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4053 struct nlattr *nl_reg_rule;
4054 const struct ieee80211_reg_rule *reg_rule;
4055 const struct ieee80211_freq_range *freq_range;
4056 const struct ieee80211_power_rule *power_rule;
4057
4058 reg_rule = &cfg80211_regdomain->reg_rules[i];
4059 freq_range = &reg_rule->freq_range;
4060 power_rule = &reg_rule->power_rule;
4061
4062 nl_reg_rule = nla_nest_start(msg, i);
4063 if (!nl_reg_rule)
4064 goto nla_put_failure;
4065
4066 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4067 reg_rule->flags) ||
4068 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4069 freq_range->start_freq_khz) ||
4070 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4071 freq_range->end_freq_khz) ||
4072 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4073 freq_range->max_bandwidth_khz) ||
4074 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4075 power_rule->max_antenna_gain) ||
4076 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4077 power_rule->max_eirp))
4078 goto nla_put_failure;
4079
4080 nla_nest_end(msg, nl_reg_rule);
4081 }
4082
4083 nla_nest_end(msg, nl_reg_rules);
4084
4085 genlmsg_end(msg, hdr);
4086 err = genlmsg_reply(msg, info);
4087 goto out;
4088
4089 nla_put_failure:
4090 genlmsg_cancel(msg, hdr);
4091 put_failure:
4092 nlmsg_free(msg);
4093 err = -EMSGSIZE;
4094 out:
4095 mutex_unlock(&cfg80211_mutex);
4096 return err;
4097 }
4098
4099 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4100 {
4101 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4102 struct nlattr *nl_reg_rule;
4103 char *alpha2 = NULL;
4104 int rem_reg_rules = 0, r = 0;
4105 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4106 u8 dfs_region = 0;
4107 struct ieee80211_regdomain *rd = NULL;
4108
4109 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4110 return -EINVAL;
4111
4112 if (!info->attrs[NL80211_ATTR_REG_RULES])
4113 return -EINVAL;
4114
4115 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4116
4117 if (info->attrs[NL80211_ATTR_DFS_REGION])
4118 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4119
4120 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4121 rem_reg_rules) {
4122 num_rules++;
4123 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4124 return -EINVAL;
4125 }
4126
4127 mutex_lock(&cfg80211_mutex);
4128
4129 if (!reg_is_valid_request(alpha2)) {
4130 r = -EINVAL;
4131 goto bad_reg;
4132 }
4133
4134 size_of_regd = sizeof(struct ieee80211_regdomain) +
4135 (num_rules * sizeof(struct ieee80211_reg_rule));
4136
4137 rd = kzalloc(size_of_regd, GFP_KERNEL);
4138 if (!rd) {
4139 r = -ENOMEM;
4140 goto bad_reg;
4141 }
4142
4143 rd->n_reg_rules = num_rules;
4144 rd->alpha2[0] = alpha2[0];
4145 rd->alpha2[1] = alpha2[1];
4146
4147 /*
4148 * Disable DFS master mode if the DFS region was
4149 * not supported or known on this kernel.
4150 */
4151 if (reg_supported_dfs_region(dfs_region))
4152 rd->dfs_region = dfs_region;
4153
4154 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4155 rem_reg_rules) {
4156 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4157 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4158 reg_rule_policy);
4159 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4160 if (r)
4161 goto bad_reg;
4162
4163 rule_idx++;
4164
4165 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4166 r = -EINVAL;
4167 goto bad_reg;
4168 }
4169 }
4170
4171 BUG_ON(rule_idx != num_rules);
4172
4173 r = set_regdom(rd);
4174
4175 mutex_unlock(&cfg80211_mutex);
4176
4177 return r;
4178
4179 bad_reg:
4180 mutex_unlock(&cfg80211_mutex);
4181 kfree(rd);
4182 return r;
4183 }
4184
4185 static int validate_scan_freqs(struct nlattr *freqs)
4186 {
4187 struct nlattr *attr1, *attr2;
4188 int n_channels = 0, tmp1, tmp2;
4189
4190 nla_for_each_nested(attr1, freqs, tmp1) {
4191 n_channels++;
4192 /*
4193 * Some hardware has a limited channel list for
4194 * scanning, and it is pretty much nonsensical
4195 * to scan for a channel twice, so disallow that
4196 * and don't require drivers to check that the
4197 * channel list they get isn't longer than what
4198 * they can scan, as long as they can scan all
4199 * the channels they registered at once.
4200 */
4201 nla_for_each_nested(attr2, freqs, tmp2)
4202 if (attr1 != attr2 &&
4203 nla_get_u32(attr1) == nla_get_u32(attr2))
4204 return 0;
4205 }
4206
4207 return n_channels;
4208 }
4209
4210 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4211 {
4212 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4213 struct wireless_dev *wdev = info->user_ptr[1];
4214 struct cfg80211_scan_request *request;
4215 struct nlattr *attr;
4216 struct wiphy *wiphy;
4217 int err, tmp, n_ssids = 0, n_channels, i;
4218 size_t ie_len;
4219
4220 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4221 return -EINVAL;
4222
4223 wiphy = &rdev->wiphy;
4224
4225 if (!rdev->ops->scan)
4226 return -EOPNOTSUPP;
4227
4228 if (rdev->scan_req)
4229 return -EBUSY;
4230
4231 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4232 n_channels = validate_scan_freqs(
4233 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4234 if (!n_channels)
4235 return -EINVAL;
4236 } else {
4237 enum ieee80211_band band;
4238 n_channels = 0;
4239
4240 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4241 if (wiphy->bands[band])
4242 n_channels += wiphy->bands[band]->n_channels;
4243 }
4244
4245 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4246 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4247 n_ssids++;
4248
4249 if (n_ssids > wiphy->max_scan_ssids)
4250 return -EINVAL;
4251
4252 if (info->attrs[NL80211_ATTR_IE])
4253 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4254 else
4255 ie_len = 0;
4256
4257 if (ie_len > wiphy->max_scan_ie_len)
4258 return -EINVAL;
4259
4260 request = kzalloc(sizeof(*request)
4261 + sizeof(*request->ssids) * n_ssids
4262 + sizeof(*request->channels) * n_channels
4263 + ie_len, GFP_KERNEL);
4264 if (!request)
4265 return -ENOMEM;
4266
4267 if (n_ssids)
4268 request->ssids = (void *)&request->channels[n_channels];
4269 request->n_ssids = n_ssids;
4270 if (ie_len) {
4271 if (request->ssids)
4272 request->ie = (void *)(request->ssids + n_ssids);
4273 else
4274 request->ie = (void *)(request->channels + n_channels);
4275 }
4276
4277 i = 0;
4278 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4279 /* user specified, bail out if channel not found */
4280 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4281 struct ieee80211_channel *chan;
4282
4283 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4284
4285 if (!chan) {
4286 err = -EINVAL;
4287 goto out_free;
4288 }
4289
4290 /* ignore disabled channels */
4291 if (chan->flags & IEEE80211_CHAN_DISABLED)
4292 continue;
4293
4294 request->channels[i] = chan;
4295 i++;
4296 }
4297 } else {
4298 enum ieee80211_band band;
4299
4300 /* all channels */
4301 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4302 int j;
4303 if (!wiphy->bands[band])
4304 continue;
4305 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4306 struct ieee80211_channel *chan;
4307
4308 chan = &wiphy->bands[band]->channels[j];
4309
4310 if (chan->flags & IEEE80211_CHAN_DISABLED)
4311 continue;
4312
4313 request->channels[i] = chan;
4314 i++;
4315 }
4316 }
4317 }
4318
4319 if (!i) {
4320 err = -EINVAL;
4321 goto out_free;
4322 }
4323
4324 request->n_channels = i;
4325
4326 i = 0;
4327 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4328 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4329 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4330 err = -EINVAL;
4331 goto out_free;
4332 }
4333 request->ssids[i].ssid_len = nla_len(attr);
4334 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4335 i++;
4336 }
4337 }
4338
4339 if (info->attrs[NL80211_ATTR_IE]) {
4340 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4341 memcpy((void *)request->ie,
4342 nla_data(info->attrs[NL80211_ATTR_IE]),
4343 request->ie_len);
4344 }
4345
4346 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4347 if (wiphy->bands[i])
4348 request->rates[i] =
4349 (1 << wiphy->bands[i]->n_bitrates) - 1;
4350
4351 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4352 nla_for_each_nested(attr,
4353 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4354 tmp) {
4355 enum ieee80211_band band = nla_type(attr);
4356
4357 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4358 err = -EINVAL;
4359 goto out_free;
4360 }
4361 err = ieee80211_get_ratemask(wiphy->bands[band],
4362 nla_data(attr),
4363 nla_len(attr),
4364 &request->rates[band]);
4365 if (err)
4366 goto out_free;
4367 }
4368 }
4369
4370 request->no_cck =
4371 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4372
4373 request->wdev = wdev;
4374 request->wiphy = &rdev->wiphy;
4375
4376 rdev->scan_req = request;
4377 err = rdev->ops->scan(&rdev->wiphy, request);
4378
4379 if (!err) {
4380 nl80211_send_scan_start(rdev, wdev);
4381 if (wdev->netdev)
4382 dev_hold(wdev->netdev);
4383 } else {
4384 out_free:
4385 rdev->scan_req = NULL;
4386 kfree(request);
4387 }
4388
4389 return err;
4390 }
4391
4392 static int nl80211_start_sched_scan(struct sk_buff *skb,
4393 struct genl_info *info)
4394 {
4395 struct cfg80211_sched_scan_request *request;
4396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4397 struct net_device *dev = info->user_ptr[1];
4398 struct nlattr *attr;
4399 struct wiphy *wiphy;
4400 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4401 u32 interval;
4402 enum ieee80211_band band;
4403 size_t ie_len;
4404 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4405
4406 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4407 !rdev->ops->sched_scan_start)
4408 return -EOPNOTSUPP;
4409
4410 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4411 return -EINVAL;
4412
4413 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4414 return -EINVAL;
4415
4416 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4417 if (interval == 0)
4418 return -EINVAL;
4419
4420 wiphy = &rdev->wiphy;
4421
4422 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4423 n_channels = validate_scan_freqs(
4424 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4425 if (!n_channels)
4426 return -EINVAL;
4427 } else {
4428 n_channels = 0;
4429
4430 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4431 if (wiphy->bands[band])
4432 n_channels += wiphy->bands[band]->n_channels;
4433 }
4434
4435 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4436 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4437 tmp)
4438 n_ssids++;
4439
4440 if (n_ssids > wiphy->max_sched_scan_ssids)
4441 return -EINVAL;
4442
4443 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4444 nla_for_each_nested(attr,
4445 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4446 tmp)
4447 n_match_sets++;
4448
4449 if (n_match_sets > wiphy->max_match_sets)
4450 return -EINVAL;
4451
4452 if (info->attrs[NL80211_ATTR_IE])
4453 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4454 else
4455 ie_len = 0;
4456
4457 if (ie_len > wiphy->max_sched_scan_ie_len)
4458 return -EINVAL;
4459
4460 mutex_lock(&rdev->sched_scan_mtx);
4461
4462 if (rdev->sched_scan_req) {
4463 err = -EINPROGRESS;
4464 goto out;
4465 }
4466
4467 request = kzalloc(sizeof(*request)
4468 + sizeof(*request->ssids) * n_ssids
4469 + sizeof(*request->match_sets) * n_match_sets
4470 + sizeof(*request->channels) * n_channels
4471 + ie_len, GFP_KERNEL);
4472 if (!request) {
4473 err = -ENOMEM;
4474 goto out;
4475 }
4476
4477 if (n_ssids)
4478 request->ssids = (void *)&request->channels[n_channels];
4479 request->n_ssids = n_ssids;
4480 if (ie_len) {
4481 if (request->ssids)
4482 request->ie = (void *)(request->ssids + n_ssids);
4483 else
4484 request->ie = (void *)(request->channels + n_channels);
4485 }
4486
4487 if (n_match_sets) {
4488 if (request->ie)
4489 request->match_sets = (void *)(request->ie + ie_len);
4490 else if (request->ssids)
4491 request->match_sets =
4492 (void *)(request->ssids + n_ssids);
4493 else
4494 request->match_sets =
4495 (void *)(request->channels + n_channels);
4496 }
4497 request->n_match_sets = n_match_sets;
4498
4499 i = 0;
4500 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4501 /* user specified, bail out if channel not found */
4502 nla_for_each_nested(attr,
4503 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4504 tmp) {
4505 struct ieee80211_channel *chan;
4506
4507 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4508
4509 if (!chan) {
4510 err = -EINVAL;
4511 goto out_free;
4512 }
4513
4514 /* ignore disabled channels */
4515 if (chan->flags & IEEE80211_CHAN_DISABLED)
4516 continue;
4517
4518 request->channels[i] = chan;
4519 i++;
4520 }
4521 } else {
4522 /* all channels */
4523 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4524 int j;
4525 if (!wiphy->bands[band])
4526 continue;
4527 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4528 struct ieee80211_channel *chan;
4529
4530 chan = &wiphy->bands[band]->channels[j];
4531
4532 if (chan->flags & IEEE80211_CHAN_DISABLED)
4533 continue;
4534
4535 request->channels[i] = chan;
4536 i++;
4537 }
4538 }
4539 }
4540
4541 if (!i) {
4542 err = -EINVAL;
4543 goto out_free;
4544 }
4545
4546 request->n_channels = i;
4547
4548 i = 0;
4549 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4550 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4551 tmp) {
4552 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4553 err = -EINVAL;
4554 goto out_free;
4555 }
4556 request->ssids[i].ssid_len = nla_len(attr);
4557 memcpy(request->ssids[i].ssid, nla_data(attr),
4558 nla_len(attr));
4559 i++;
4560 }
4561 }
4562
4563 i = 0;
4564 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4565 nla_for_each_nested(attr,
4566 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4567 tmp) {
4568 struct nlattr *ssid, *rssi;
4569
4570 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4571 nla_data(attr), nla_len(attr),
4572 nl80211_match_policy);
4573 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4574 if (ssid) {
4575 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4576 err = -EINVAL;
4577 goto out_free;
4578 }
4579 memcpy(request->match_sets[i].ssid.ssid,
4580 nla_data(ssid), nla_len(ssid));
4581 request->match_sets[i].ssid.ssid_len =
4582 nla_len(ssid);
4583 }
4584 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4585 if (rssi)
4586 request->rssi_thold = nla_get_u32(rssi);
4587 else
4588 request->rssi_thold =
4589 NL80211_SCAN_RSSI_THOLD_OFF;
4590 i++;
4591 }
4592 }
4593
4594 if (info->attrs[NL80211_ATTR_IE]) {
4595 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4596 memcpy((void *)request->ie,
4597 nla_data(info->attrs[NL80211_ATTR_IE]),
4598 request->ie_len);
4599 }
4600
4601 request->dev = dev;
4602 request->wiphy = &rdev->wiphy;
4603 request->interval = interval;
4604
4605 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4606 if (!err) {
4607 rdev->sched_scan_req = request;
4608 nl80211_send_sched_scan(rdev, dev,
4609 NL80211_CMD_START_SCHED_SCAN);
4610 goto out;
4611 }
4612
4613 out_free:
4614 kfree(request);
4615 out:
4616 mutex_unlock(&rdev->sched_scan_mtx);
4617 return err;
4618 }
4619
4620 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4621 struct genl_info *info)
4622 {
4623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4624 int err;
4625
4626 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4627 !rdev->ops->sched_scan_stop)
4628 return -EOPNOTSUPP;
4629
4630 mutex_lock(&rdev->sched_scan_mtx);
4631 err = __cfg80211_stop_sched_scan(rdev, false);
4632 mutex_unlock(&rdev->sched_scan_mtx);
4633
4634 return err;
4635 }
4636
4637 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4638 u32 seq, int flags,
4639 struct cfg80211_registered_device *rdev,
4640 struct wireless_dev *wdev,
4641 struct cfg80211_internal_bss *intbss)
4642 {
4643 struct cfg80211_bss *res = &intbss->pub;
4644 void *hdr;
4645 struct nlattr *bss;
4646
4647 ASSERT_WDEV_LOCK(wdev);
4648
4649 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
4650 NL80211_CMD_NEW_SCAN_RESULTS);
4651 if (!hdr)
4652 return -1;
4653
4654 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4655
4656 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4657 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4658 goto nla_put_failure;
4659
4660 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4661 if (!bss)
4662 goto nla_put_failure;
4663 if ((!is_zero_ether_addr(res->bssid) &&
4664 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4665 (res->information_elements && res->len_information_elements &&
4666 nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4667 res->len_information_elements,
4668 res->information_elements)) ||
4669 (res->beacon_ies && res->len_beacon_ies &&
4670 res->beacon_ies != res->information_elements &&
4671 nla_put(msg, NL80211_BSS_BEACON_IES,
4672 res->len_beacon_ies, res->beacon_ies)))
4673 goto nla_put_failure;
4674 if (res->tsf &&
4675 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4676 goto nla_put_failure;
4677 if (res->beacon_interval &&
4678 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4679 goto nla_put_failure;
4680 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4681 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4682 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4683 jiffies_to_msecs(jiffies - intbss->ts)))
4684 goto nla_put_failure;
4685
4686 switch (rdev->wiphy.signal_type) {
4687 case CFG80211_SIGNAL_TYPE_MBM:
4688 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4689 goto nla_put_failure;
4690 break;
4691 case CFG80211_SIGNAL_TYPE_UNSPEC:
4692 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4693 goto nla_put_failure;
4694 break;
4695 default:
4696 break;
4697 }
4698
4699 switch (wdev->iftype) {
4700 case NL80211_IFTYPE_P2P_CLIENT:
4701 case NL80211_IFTYPE_STATION:
4702 if (intbss == wdev->current_bss &&
4703 nla_put_u32(msg, NL80211_BSS_STATUS,
4704 NL80211_BSS_STATUS_ASSOCIATED))
4705 goto nla_put_failure;
4706 break;
4707 case NL80211_IFTYPE_ADHOC:
4708 if (intbss == wdev->current_bss &&
4709 nla_put_u32(msg, NL80211_BSS_STATUS,
4710 NL80211_BSS_STATUS_IBSS_JOINED))
4711 goto nla_put_failure;
4712 break;
4713 default:
4714 break;
4715 }
4716
4717 nla_nest_end(msg, bss);
4718
4719 return genlmsg_end(msg, hdr);
4720
4721 nla_put_failure:
4722 genlmsg_cancel(msg, hdr);
4723 return -EMSGSIZE;
4724 }
4725
4726 static int nl80211_dump_scan(struct sk_buff *skb,
4727 struct netlink_callback *cb)
4728 {
4729 struct cfg80211_registered_device *rdev;
4730 struct net_device *dev;
4731 struct cfg80211_internal_bss *scan;
4732 struct wireless_dev *wdev;
4733 int start = cb->args[1], idx = 0;
4734 int err;
4735
4736 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4737 if (err)
4738 return err;
4739
4740 wdev = dev->ieee80211_ptr;
4741
4742 wdev_lock(wdev);
4743 spin_lock_bh(&rdev->bss_lock);
4744 cfg80211_bss_expire(rdev);
4745
4746 cb->seq = rdev->bss_generation;
4747
4748 list_for_each_entry(scan, &rdev->bss_list, list) {
4749 if (++idx <= start)
4750 continue;
4751 if (nl80211_send_bss(skb, cb,
4752 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4753 rdev, wdev, scan) < 0) {
4754 idx--;
4755 break;
4756 }
4757 }
4758
4759 spin_unlock_bh(&rdev->bss_lock);
4760 wdev_unlock(wdev);
4761
4762 cb->args[1] = idx;
4763 nl80211_finish_netdev_dump(rdev);
4764
4765 return skb->len;
4766 }
4767
4768 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
4769 int flags, struct net_device *dev,
4770 struct survey_info *survey)
4771 {
4772 void *hdr;
4773 struct nlattr *infoattr;
4774
4775 hdr = nl80211hdr_put(msg, portid, seq, flags,
4776 NL80211_CMD_NEW_SURVEY_RESULTS);
4777 if (!hdr)
4778 return -ENOMEM;
4779
4780 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4781 goto nla_put_failure;
4782
4783 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4784 if (!infoattr)
4785 goto nla_put_failure;
4786
4787 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4788 survey->channel->center_freq))
4789 goto nla_put_failure;
4790
4791 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4792 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4793 goto nla_put_failure;
4794 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4795 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4796 goto nla_put_failure;
4797 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4798 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4799 survey->channel_time))
4800 goto nla_put_failure;
4801 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4802 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4803 survey->channel_time_busy))
4804 goto nla_put_failure;
4805 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4806 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4807 survey->channel_time_ext_busy))
4808 goto nla_put_failure;
4809 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4810 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4811 survey->channel_time_rx))
4812 goto nla_put_failure;
4813 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4814 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4815 survey->channel_time_tx))
4816 goto nla_put_failure;
4817
4818 nla_nest_end(msg, infoattr);
4819
4820 return genlmsg_end(msg, hdr);
4821
4822 nla_put_failure:
4823 genlmsg_cancel(msg, hdr);
4824 return -EMSGSIZE;
4825 }
4826
4827 static int nl80211_dump_survey(struct sk_buff *skb,
4828 struct netlink_callback *cb)
4829 {
4830 struct survey_info survey;
4831 struct cfg80211_registered_device *dev;
4832 struct net_device *netdev;
4833 int survey_idx = cb->args[1];
4834 int res;
4835
4836 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4837 if (res)
4838 return res;
4839
4840 if (!dev->ops->dump_survey) {
4841 res = -EOPNOTSUPP;
4842 goto out_err;
4843 }
4844
4845 while (1) {
4846 struct ieee80211_channel *chan;
4847
4848 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4849 &survey);
4850 if (res == -ENOENT)
4851 break;
4852 if (res)
4853 goto out_err;
4854
4855 /* Survey without a channel doesn't make sense */
4856 if (!survey.channel) {
4857 res = -EINVAL;
4858 goto out;
4859 }
4860
4861 chan = ieee80211_get_channel(&dev->wiphy,
4862 survey.channel->center_freq);
4863 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4864 survey_idx++;
4865 continue;
4866 }
4867
4868 if (nl80211_send_survey(skb,
4869 NETLINK_CB(cb->skb).portid,
4870 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4871 netdev,
4872 &survey) < 0)
4873 goto out;
4874 survey_idx++;
4875 }
4876
4877 out:
4878 cb->args[1] = survey_idx;
4879 res = skb->len;
4880 out_err:
4881 nl80211_finish_netdev_dump(dev);
4882 return res;
4883 }
4884
4885 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4886 {
4887 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4888 NL80211_WPA_VERSION_2));
4889 }
4890
4891 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4892 {
4893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4894 struct net_device *dev = info->user_ptr[1];
4895 struct ieee80211_channel *chan;
4896 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
4897 int err, ssid_len, ie_len = 0, sae_data_len = 0;
4898 enum nl80211_auth_type auth_type;
4899 struct key_parse key;
4900 bool local_state_change;
4901
4902 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4903 return -EINVAL;
4904
4905 if (!info->attrs[NL80211_ATTR_MAC])
4906 return -EINVAL;
4907
4908 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4909 return -EINVAL;
4910
4911 if (!info->attrs[NL80211_ATTR_SSID])
4912 return -EINVAL;
4913
4914 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4915 return -EINVAL;
4916
4917 err = nl80211_parse_key(info, &key);
4918 if (err)
4919 return err;
4920
4921 if (key.idx >= 0) {
4922 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4923 return -EINVAL;
4924 if (!key.p.key || !key.p.key_len)
4925 return -EINVAL;
4926 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4927 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4928 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4929 key.p.key_len != WLAN_KEY_LEN_WEP104))
4930 return -EINVAL;
4931 if (key.idx > 4)
4932 return -EINVAL;
4933 } else {
4934 key.p.key_len = 0;
4935 key.p.key = NULL;
4936 }
4937
4938 if (key.idx >= 0) {
4939 int i;
4940 bool ok = false;
4941 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4942 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4943 ok = true;
4944 break;
4945 }
4946 }
4947 if (!ok)
4948 return -EINVAL;
4949 }
4950
4951 if (!rdev->ops->auth)
4952 return -EOPNOTSUPP;
4953
4954 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4955 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4956 return -EOPNOTSUPP;
4957
4958 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4959 chan = ieee80211_get_channel(&rdev->wiphy,
4960 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4961 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4962 return -EINVAL;
4963
4964 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4965 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4966
4967 if (info->attrs[NL80211_ATTR_IE]) {
4968 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4969 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4970 }
4971
4972 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4973 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
4974 return -EINVAL;
4975
4976 if (auth_type == NL80211_AUTHTYPE_SAE &&
4977 !info->attrs[NL80211_ATTR_SAE_DATA])
4978 return -EINVAL;
4979
4980 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
4981 if (auth_type != NL80211_AUTHTYPE_SAE)
4982 return -EINVAL;
4983 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
4984 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
4985 /* need to include at least Auth Transaction and Status Code */
4986 if (sae_data_len < 4)
4987 return -EINVAL;
4988 }
4989
4990 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4991
4992 /*
4993 * Since we no longer track auth state, ignore
4994 * requests to only change local state.
4995 */
4996 if (local_state_change)
4997 return 0;
4998
4999 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5000 ssid, ssid_len, ie, ie_len,
5001 key.p.key, key.p.key_len, key.idx,
5002 sae_data, sae_data_len);
5003 }
5004
5005 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5006 struct genl_info *info,
5007 struct cfg80211_crypto_settings *settings,
5008 int cipher_limit)
5009 {
5010 memset(settings, 0, sizeof(*settings));
5011
5012 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5013
5014 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5015 u16 proto;
5016 proto = nla_get_u16(
5017 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5018 settings->control_port_ethertype = cpu_to_be16(proto);
5019 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5020 proto != ETH_P_PAE)
5021 return -EINVAL;
5022 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5023 settings->control_port_no_encrypt = true;
5024 } else
5025 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5026
5027 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5028 void *data;
5029 int len, i;
5030
5031 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5032 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5033 settings->n_ciphers_pairwise = len / sizeof(u32);
5034
5035 if (len % sizeof(u32))
5036 return -EINVAL;
5037
5038 if (settings->n_ciphers_pairwise > cipher_limit)
5039 return -EINVAL;
5040
5041 memcpy(settings->ciphers_pairwise, data, len);
5042
5043 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5044 if (!cfg80211_supported_cipher_suite(
5045 &rdev->wiphy,
5046 settings->ciphers_pairwise[i]))
5047 return -EINVAL;
5048 }
5049
5050 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5051 settings->cipher_group =
5052 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5053 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5054 settings->cipher_group))
5055 return -EINVAL;
5056 }
5057
5058 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5059 settings->wpa_versions =
5060 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5061 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5062 return -EINVAL;
5063 }
5064
5065 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5066 void *data;
5067 int len;
5068
5069 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5070 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5071 settings->n_akm_suites = len / sizeof(u32);
5072
5073 if (len % sizeof(u32))
5074 return -EINVAL;
5075
5076 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5077 return -EINVAL;
5078
5079 memcpy(settings->akm_suites, data, len);
5080 }
5081
5082 return 0;
5083 }
5084
5085 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5086 {
5087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5088 struct net_device *dev = info->user_ptr[1];
5089 struct cfg80211_crypto_settings crypto;
5090 struct ieee80211_channel *chan;
5091 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5092 int err, ssid_len, ie_len = 0;
5093 bool use_mfp = false;
5094 u32 flags = 0;
5095 struct ieee80211_ht_cap *ht_capa = NULL;
5096 struct ieee80211_ht_cap *ht_capa_mask = NULL;
5097
5098 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5099 return -EINVAL;
5100
5101 if (!info->attrs[NL80211_ATTR_MAC] ||
5102 !info->attrs[NL80211_ATTR_SSID] ||
5103 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5104 return -EINVAL;
5105
5106 if (!rdev->ops->assoc)
5107 return -EOPNOTSUPP;
5108
5109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5110 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5111 return -EOPNOTSUPP;
5112
5113 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5114
5115 chan = ieee80211_get_channel(&rdev->wiphy,
5116 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5117 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5118 return -EINVAL;
5119
5120 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5121 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5122
5123 if (info->attrs[NL80211_ATTR_IE]) {
5124 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5125 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5126 }
5127
5128 if (info->attrs[NL80211_ATTR_USE_MFP]) {
5129 enum nl80211_mfp mfp =
5130 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5131 if (mfp == NL80211_MFP_REQUIRED)
5132 use_mfp = true;
5133 else if (mfp != NL80211_MFP_NO)
5134 return -EINVAL;
5135 }
5136
5137 if (info->attrs[NL80211_ATTR_PREV_BSSID])
5138 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5139
5140 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5141 flags |= ASSOC_REQ_DISABLE_HT;
5142
5143 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5144 ht_capa_mask =
5145 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5146
5147 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5148 if (!ht_capa_mask)
5149 return -EINVAL;
5150 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5151 }
5152
5153 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5154 if (!err)
5155 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5156 ssid, ssid_len, ie, ie_len, use_mfp,
5157 &crypto, flags, ht_capa,
5158 ht_capa_mask);
5159
5160 return err;
5161 }
5162
5163 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5164 {
5165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5166 struct net_device *dev = info->user_ptr[1];
5167 const u8 *ie = NULL, *bssid;
5168 int ie_len = 0;
5169 u16 reason_code;
5170 bool local_state_change;
5171
5172 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5173 return -EINVAL;
5174
5175 if (!info->attrs[NL80211_ATTR_MAC])
5176 return -EINVAL;
5177
5178 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5179 return -EINVAL;
5180
5181 if (!rdev->ops->deauth)
5182 return -EOPNOTSUPP;
5183
5184 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5185 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5186 return -EOPNOTSUPP;
5187
5188 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5189
5190 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5191 if (reason_code == 0) {
5192 /* Reason Code 0 is reserved */
5193 return -EINVAL;
5194 }
5195
5196 if (info->attrs[NL80211_ATTR_IE]) {
5197 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5198 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5199 }
5200
5201 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5202
5203 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5204 local_state_change);
5205 }
5206
5207 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5208 {
5209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5210 struct net_device *dev = info->user_ptr[1];
5211 const u8 *ie = NULL, *bssid;
5212 int ie_len = 0;
5213 u16 reason_code;
5214 bool local_state_change;
5215
5216 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5217 return -EINVAL;
5218
5219 if (!info->attrs[NL80211_ATTR_MAC])
5220 return -EINVAL;
5221
5222 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5223 return -EINVAL;
5224
5225 if (!rdev->ops->disassoc)
5226 return -EOPNOTSUPP;
5227
5228 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5229 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5230 return -EOPNOTSUPP;
5231
5232 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5233
5234 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5235 if (reason_code == 0) {
5236 /* Reason Code 0 is reserved */
5237 return -EINVAL;
5238 }
5239
5240 if (info->attrs[NL80211_ATTR_IE]) {
5241 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5242 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5243 }
5244
5245 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5246
5247 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5248 local_state_change);
5249 }
5250
5251 static bool
5252 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5253 int mcast_rate[IEEE80211_NUM_BANDS],
5254 int rateval)
5255 {
5256 struct wiphy *wiphy = &rdev->wiphy;
5257 bool found = false;
5258 int band, i;
5259
5260 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5261 struct ieee80211_supported_band *sband;
5262
5263 sband = wiphy->bands[band];
5264 if (!sband)
5265 continue;
5266
5267 for (i = 0; i < sband->n_bitrates; i++) {
5268 if (sband->bitrates[i].bitrate == rateval) {
5269 mcast_rate[band] = i + 1;
5270 found = true;
5271 break;
5272 }
5273 }
5274 }
5275
5276 return found;
5277 }
5278
5279 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5280 {
5281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5282 struct net_device *dev = info->user_ptr[1];
5283 struct cfg80211_ibss_params ibss;
5284 struct wiphy *wiphy;
5285 struct cfg80211_cached_keys *connkeys = NULL;
5286 int err;
5287
5288 memset(&ibss, 0, sizeof(ibss));
5289
5290 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5291 return -EINVAL;
5292
5293 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5294 !info->attrs[NL80211_ATTR_SSID] ||
5295 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5296 return -EINVAL;
5297
5298 ibss.beacon_interval = 100;
5299
5300 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5301 ibss.beacon_interval =
5302 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5303 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5304 return -EINVAL;
5305 }
5306
5307 if (!rdev->ops->join_ibss)
5308 return -EOPNOTSUPP;
5309
5310 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5311 return -EOPNOTSUPP;
5312
5313 wiphy = &rdev->wiphy;
5314
5315 if (info->attrs[NL80211_ATTR_MAC]) {
5316 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5317
5318 if (!is_valid_ether_addr(ibss.bssid))
5319 return -EINVAL;
5320 }
5321 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5322 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5323
5324 if (info->attrs[NL80211_ATTR_IE]) {
5325 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5326 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5327 }
5328
5329 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5330 enum nl80211_channel_type channel_type;
5331
5332 if (!nl80211_valid_channel_type(info, &channel_type))
5333 return -EINVAL;
5334
5335 if (channel_type != NL80211_CHAN_NO_HT &&
5336 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5337 return -EINVAL;
5338
5339 ibss.channel_type = channel_type;
5340 } else {
5341 ibss.channel_type = NL80211_CHAN_NO_HT;
5342 }
5343
5344 ibss.channel = rdev_freq_to_chan(rdev,
5345 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5346 ibss.channel_type);
5347 if (!ibss.channel ||
5348 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5349 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5350 return -EINVAL;
5351
5352 /* Both channels should be able to initiate communication */
5353 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5354 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5355 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5356 ibss.channel_type))
5357 return -EINVAL;
5358
5359 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5360 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5361
5362 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5363 u8 *rates =
5364 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5365 int n_rates =
5366 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5367 struct ieee80211_supported_band *sband =
5368 wiphy->bands[ibss.channel->band];
5369
5370 err = ieee80211_get_ratemask(sband, rates, n_rates,
5371 &ibss.basic_rates);
5372 if (err)
5373 return err;
5374 }
5375
5376 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5377 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5378 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5379 return -EINVAL;
5380
5381 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5382 connkeys = nl80211_parse_connkeys(rdev,
5383 info->attrs[NL80211_ATTR_KEYS]);
5384 if (IS_ERR(connkeys))
5385 return PTR_ERR(connkeys);
5386 }
5387
5388 ibss.control_port =
5389 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5390
5391 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5392 if (err)
5393 kfree(connkeys);
5394 return err;
5395 }
5396
5397 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5398 {
5399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5400 struct net_device *dev = info->user_ptr[1];
5401
5402 if (!rdev->ops->leave_ibss)
5403 return -EOPNOTSUPP;
5404
5405 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5406 return -EOPNOTSUPP;
5407
5408 return cfg80211_leave_ibss(rdev, dev, false);
5409 }
5410
5411 #ifdef CONFIG_NL80211_TESTMODE
5412 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5413 .name = "testmode",
5414 };
5415
5416 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5417 {
5418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5419 int err;
5420
5421 if (!info->attrs[NL80211_ATTR_TESTDATA])
5422 return -EINVAL;
5423
5424 err = -EOPNOTSUPP;
5425 if (rdev->ops->testmode_cmd) {
5426 rdev->testmode_info = info;
5427 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5428 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5429 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5430 rdev->testmode_info = NULL;
5431 }
5432
5433 return err;
5434 }
5435
5436 static int nl80211_testmode_dump(struct sk_buff *skb,
5437 struct netlink_callback *cb)
5438 {
5439 struct cfg80211_registered_device *rdev;
5440 int err;
5441 long phy_idx;
5442 void *data = NULL;
5443 int data_len = 0;
5444
5445 if (cb->args[0]) {
5446 /*
5447 * 0 is a valid index, but not valid for args[0],
5448 * so we need to offset by 1.
5449 */
5450 phy_idx = cb->args[0] - 1;
5451 } else {
5452 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5453 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5454 nl80211_policy);
5455 if (err)
5456 return err;
5457
5458 mutex_lock(&cfg80211_mutex);
5459 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5460 nl80211_fam.attrbuf);
5461 if (IS_ERR(rdev)) {
5462 mutex_unlock(&cfg80211_mutex);
5463 return PTR_ERR(rdev);
5464 }
5465 phy_idx = rdev->wiphy_idx;
5466 rdev = NULL;
5467 mutex_unlock(&cfg80211_mutex);
5468
5469 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5470 cb->args[1] =
5471 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5472 }
5473
5474 if (cb->args[1]) {
5475 data = nla_data((void *)cb->args[1]);
5476 data_len = nla_len((void *)cb->args[1]);
5477 }
5478
5479 mutex_lock(&cfg80211_mutex);
5480 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5481 if (!rdev) {
5482 mutex_unlock(&cfg80211_mutex);
5483 return -ENOENT;
5484 }
5485 cfg80211_lock_rdev(rdev);
5486 mutex_unlock(&cfg80211_mutex);
5487
5488 if (!rdev->ops->testmode_dump) {
5489 err = -EOPNOTSUPP;
5490 goto out_err;
5491 }
5492
5493 while (1) {
5494 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
5495 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5496 NL80211_CMD_TESTMODE);
5497 struct nlattr *tmdata;
5498
5499 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5500 genlmsg_cancel(skb, hdr);
5501 break;
5502 }
5503
5504 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5505 if (!tmdata) {
5506 genlmsg_cancel(skb, hdr);
5507 break;
5508 }
5509 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5510 data, data_len);
5511 nla_nest_end(skb, tmdata);
5512
5513 if (err == -ENOBUFS || err == -ENOENT) {
5514 genlmsg_cancel(skb, hdr);
5515 break;
5516 } else if (err) {
5517 genlmsg_cancel(skb, hdr);
5518 goto out_err;
5519 }
5520
5521 genlmsg_end(skb, hdr);
5522 }
5523
5524 err = skb->len;
5525 /* see above */
5526 cb->args[0] = phy_idx + 1;
5527 out_err:
5528 cfg80211_unlock_rdev(rdev);
5529 return err;
5530 }
5531
5532 static struct sk_buff *
5533 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5534 int approxlen, u32 portid, u32 seq, gfp_t gfp)
5535 {
5536 struct sk_buff *skb;
5537 void *hdr;
5538 struct nlattr *data;
5539
5540 skb = nlmsg_new(approxlen + 100, gfp);
5541 if (!skb)
5542 return NULL;
5543
5544 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
5545 if (!hdr) {
5546 kfree_skb(skb);
5547 return NULL;
5548 }
5549
5550 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5551 goto nla_put_failure;
5552 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5553
5554 ((void **)skb->cb)[0] = rdev;
5555 ((void **)skb->cb)[1] = hdr;
5556 ((void **)skb->cb)[2] = data;
5557
5558 return skb;
5559
5560 nla_put_failure:
5561 kfree_skb(skb);
5562 return NULL;
5563 }
5564
5565 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5566 int approxlen)
5567 {
5568 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5569
5570 if (WARN_ON(!rdev->testmode_info))
5571 return NULL;
5572
5573 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5574 rdev->testmode_info->snd_portid,
5575 rdev->testmode_info->snd_seq,
5576 GFP_KERNEL);
5577 }
5578 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5579
5580 int cfg80211_testmode_reply(struct sk_buff *skb)
5581 {
5582 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5583 void *hdr = ((void **)skb->cb)[1];
5584 struct nlattr *data = ((void **)skb->cb)[2];
5585
5586 if (WARN_ON(!rdev->testmode_info)) {
5587 kfree_skb(skb);
5588 return -EINVAL;
5589 }
5590
5591 nla_nest_end(skb, data);
5592 genlmsg_end(skb, hdr);
5593 return genlmsg_reply(skb, rdev->testmode_info);
5594 }
5595 EXPORT_SYMBOL(cfg80211_testmode_reply);
5596
5597 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5598 int approxlen, gfp_t gfp)
5599 {
5600 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5601
5602 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5603 }
5604 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5605
5606 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5607 {
5608 void *hdr = ((void **)skb->cb)[1];
5609 struct nlattr *data = ((void **)skb->cb)[2];
5610
5611 nla_nest_end(skb, data);
5612 genlmsg_end(skb, hdr);
5613 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5614 }
5615 EXPORT_SYMBOL(cfg80211_testmode_event);
5616 #endif
5617
5618 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5619 {
5620 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5621 struct net_device *dev = info->user_ptr[1];
5622 struct cfg80211_connect_params connect;
5623 struct wiphy *wiphy;
5624 struct cfg80211_cached_keys *connkeys = NULL;
5625 int err;
5626
5627 memset(&connect, 0, sizeof(connect));
5628
5629 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5630 return -EINVAL;
5631
5632 if (!info->attrs[NL80211_ATTR_SSID] ||
5633 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5634 return -EINVAL;
5635
5636 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5637 connect.auth_type =
5638 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5639 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
5640 NL80211_CMD_CONNECT))
5641 return -EINVAL;
5642 } else
5643 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5644
5645 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5646
5647 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5648 NL80211_MAX_NR_CIPHER_SUITES);
5649 if (err)
5650 return err;
5651
5652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5653 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5654 return -EOPNOTSUPP;
5655
5656 wiphy = &rdev->wiphy;
5657
5658 connect.bg_scan_period = -1;
5659 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5660 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5661 connect.bg_scan_period =
5662 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5663 }
5664
5665 if (info->attrs[NL80211_ATTR_MAC])
5666 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5667 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5668 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5669
5670 if (info->attrs[NL80211_ATTR_IE]) {
5671 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5672 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5673 }
5674
5675 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5676 connect.channel =
5677 ieee80211_get_channel(wiphy,
5678 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5679 if (!connect.channel ||
5680 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5681 return -EINVAL;
5682 }
5683
5684 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5685 connkeys = nl80211_parse_connkeys(rdev,
5686 info->attrs[NL80211_ATTR_KEYS]);
5687 if (IS_ERR(connkeys))
5688 return PTR_ERR(connkeys);
5689 }
5690
5691 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5692 connect.flags |= ASSOC_REQ_DISABLE_HT;
5693
5694 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5695 memcpy(&connect.ht_capa_mask,
5696 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5697 sizeof(connect.ht_capa_mask));
5698
5699 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5700 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5701 kfree(connkeys);
5702 return -EINVAL;
5703 }
5704 memcpy(&connect.ht_capa,
5705 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5706 sizeof(connect.ht_capa));
5707 }
5708
5709 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5710 if (err)
5711 kfree(connkeys);
5712 return err;
5713 }
5714
5715 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5716 {
5717 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5718 struct net_device *dev = info->user_ptr[1];
5719 u16 reason;
5720
5721 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5722 reason = WLAN_REASON_DEAUTH_LEAVING;
5723 else
5724 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5725
5726 if (reason == 0)
5727 return -EINVAL;
5728
5729 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5730 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5731 return -EOPNOTSUPP;
5732
5733 return cfg80211_disconnect(rdev, dev, reason, true);
5734 }
5735
5736 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5737 {
5738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5739 struct net *net;
5740 int err;
5741 u32 pid;
5742
5743 if (!info->attrs[NL80211_ATTR_PID])
5744 return -EINVAL;
5745
5746 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5747
5748 net = get_net_ns_by_pid(pid);
5749 if (IS_ERR(net))
5750 return PTR_ERR(net);
5751
5752 err = 0;
5753
5754 /* check if anything to do */
5755 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5756 err = cfg80211_switch_netns(rdev, net);
5757
5758 put_net(net);
5759 return err;
5760 }
5761
5762 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5763 {
5764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5765 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5766 struct cfg80211_pmksa *pmksa) = NULL;
5767 struct net_device *dev = info->user_ptr[1];
5768 struct cfg80211_pmksa pmksa;
5769
5770 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5771
5772 if (!info->attrs[NL80211_ATTR_MAC])
5773 return -EINVAL;
5774
5775 if (!info->attrs[NL80211_ATTR_PMKID])
5776 return -EINVAL;
5777
5778 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5779 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5780
5781 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5782 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5783 return -EOPNOTSUPP;
5784
5785 switch (info->genlhdr->cmd) {
5786 case NL80211_CMD_SET_PMKSA:
5787 rdev_ops = rdev->ops->set_pmksa;
5788 break;
5789 case NL80211_CMD_DEL_PMKSA:
5790 rdev_ops = rdev->ops->del_pmksa;
5791 break;
5792 default:
5793 WARN_ON(1);
5794 break;
5795 }
5796
5797 if (!rdev_ops)
5798 return -EOPNOTSUPP;
5799
5800 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5801 }
5802
5803 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5804 {
5805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5806 struct net_device *dev = info->user_ptr[1];
5807
5808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5810 return -EOPNOTSUPP;
5811
5812 if (!rdev->ops->flush_pmksa)
5813 return -EOPNOTSUPP;
5814
5815 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5816 }
5817
5818 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5819 {
5820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5821 struct net_device *dev = info->user_ptr[1];
5822 u8 action_code, dialog_token;
5823 u16 status_code;
5824 u8 *peer;
5825
5826 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5827 !rdev->ops->tdls_mgmt)
5828 return -EOPNOTSUPP;
5829
5830 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5831 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5832 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5833 !info->attrs[NL80211_ATTR_IE] ||
5834 !info->attrs[NL80211_ATTR_MAC])
5835 return -EINVAL;
5836
5837 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5838 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5839 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5840 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5841
5842 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5843 dialog_token, status_code,
5844 nla_data(info->attrs[NL80211_ATTR_IE]),
5845 nla_len(info->attrs[NL80211_ATTR_IE]));
5846 }
5847
5848 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5849 {
5850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5851 struct net_device *dev = info->user_ptr[1];
5852 enum nl80211_tdls_operation operation;
5853 u8 *peer;
5854
5855 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5856 !rdev->ops->tdls_oper)
5857 return -EOPNOTSUPP;
5858
5859 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5860 !info->attrs[NL80211_ATTR_MAC])
5861 return -EINVAL;
5862
5863 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5864 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5865
5866 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5867 }
5868
5869 static int nl80211_remain_on_channel(struct sk_buff *skb,
5870 struct genl_info *info)
5871 {
5872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5873 struct wireless_dev *wdev = info->user_ptr[1];
5874 struct ieee80211_channel *chan;
5875 struct sk_buff *msg;
5876 void *hdr;
5877 u64 cookie;
5878 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5879 u32 freq, duration;
5880 int err;
5881
5882 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5883 !info->attrs[NL80211_ATTR_DURATION])
5884 return -EINVAL;
5885
5886 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5887
5888 if (!rdev->ops->remain_on_channel ||
5889 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5890 return -EOPNOTSUPP;
5891
5892 /*
5893 * We should be on that channel for at least a minimum amount of
5894 * time (10ms) but no longer than the driver supports.
5895 */
5896 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5897 duration > rdev->wiphy.max_remain_on_channel_duration)
5898 return -EINVAL;
5899
5900 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5901 !nl80211_valid_channel_type(info, &channel_type))
5902 return -EINVAL;
5903
5904 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5905 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5906 if (chan == NULL)
5907 return -EINVAL;
5908
5909 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5910 if (!msg)
5911 return -ENOMEM;
5912
5913 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5914 NL80211_CMD_REMAIN_ON_CHANNEL);
5915
5916 if (IS_ERR(hdr)) {
5917 err = PTR_ERR(hdr);
5918 goto free_msg;
5919 }
5920
5921 err = rdev->ops->remain_on_channel(&rdev->wiphy, wdev, chan,
5922 channel_type, duration, &cookie);
5923
5924 if (err)
5925 goto free_msg;
5926
5927 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5928 goto nla_put_failure;
5929
5930 genlmsg_end(msg, hdr);
5931
5932 return genlmsg_reply(msg, info);
5933
5934 nla_put_failure:
5935 err = -ENOBUFS;
5936 free_msg:
5937 nlmsg_free(msg);
5938 return err;
5939 }
5940
5941 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5942 struct genl_info *info)
5943 {
5944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5945 struct wireless_dev *wdev = info->user_ptr[1];
5946 u64 cookie;
5947
5948 if (!info->attrs[NL80211_ATTR_COOKIE])
5949 return -EINVAL;
5950
5951 if (!rdev->ops->cancel_remain_on_channel)
5952 return -EOPNOTSUPP;
5953
5954 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5955
5956 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, wdev, cookie);
5957 }
5958
5959 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5960 u8 *rates, u8 rates_len)
5961 {
5962 u8 i;
5963 u32 mask = 0;
5964
5965 for (i = 0; i < rates_len; i++) {
5966 int rate = (rates[i] & 0x7f) * 5;
5967 int ridx;
5968 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5969 struct ieee80211_rate *srate =
5970 &sband->bitrates[ridx];
5971 if (rate == srate->bitrate) {
5972 mask |= 1 << ridx;
5973 break;
5974 }
5975 }
5976 if (ridx == sband->n_bitrates)
5977 return 0; /* rate not found */
5978 }
5979
5980 return mask;
5981 }
5982
5983 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5984 u8 *rates, u8 rates_len,
5985 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5986 {
5987 u8 i;
5988
5989 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5990
5991 for (i = 0; i < rates_len; i++) {
5992 int ridx, rbit;
5993
5994 ridx = rates[i] / 8;
5995 rbit = BIT(rates[i] % 8);
5996
5997 /* check validity */
5998 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5999 return false;
6000
6001 /* check availability */
6002 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6003 mcs[ridx] |= rbit;
6004 else
6005 return false;
6006 }
6007
6008 return true;
6009 }
6010
6011 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6012 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6013 .len = NL80211_MAX_SUPP_RATES },
6014 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6015 .len = NL80211_MAX_SUPP_HT_RATES },
6016 };
6017
6018 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6019 struct genl_info *info)
6020 {
6021 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6023 struct cfg80211_bitrate_mask mask;
6024 int rem, i;
6025 struct net_device *dev = info->user_ptr[1];
6026 struct nlattr *tx_rates;
6027 struct ieee80211_supported_band *sband;
6028
6029 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
6030 return -EINVAL;
6031
6032 if (!rdev->ops->set_bitrate_mask)
6033 return -EOPNOTSUPP;
6034
6035 memset(&mask, 0, sizeof(mask));
6036 /* Default to all rates enabled */
6037 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
6038 sband = rdev->wiphy.bands[i];
6039 mask.control[i].legacy =
6040 sband ? (1 << sband->n_bitrates) - 1 : 0;
6041 if (sband)
6042 memcpy(mask.control[i].mcs,
6043 sband->ht_cap.mcs.rx_mask,
6044 sizeof(mask.control[i].mcs));
6045 else
6046 memset(mask.control[i].mcs, 0,
6047 sizeof(mask.control[i].mcs));
6048 }
6049
6050 /*
6051 * The nested attribute uses enum nl80211_band as the index. This maps
6052 * directly to the enum ieee80211_band values used in cfg80211.
6053 */
6054 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6055 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6056 {
6057 enum ieee80211_band band = nla_type(tx_rates);
6058 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6059 return -EINVAL;
6060 sband = rdev->wiphy.bands[band];
6061 if (sband == NULL)
6062 return -EINVAL;
6063 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6064 nla_len(tx_rates), nl80211_txattr_policy);
6065 if (tb[NL80211_TXRATE_LEGACY]) {
6066 mask.control[band].legacy = rateset_to_mask(
6067 sband,
6068 nla_data(tb[NL80211_TXRATE_LEGACY]),
6069 nla_len(tb[NL80211_TXRATE_LEGACY]));
6070 if ((mask.control[band].legacy == 0) &&
6071 nla_len(tb[NL80211_TXRATE_LEGACY]))
6072 return -EINVAL;
6073 }
6074 if (tb[NL80211_TXRATE_MCS]) {
6075 if (!ht_rateset_to_mask(
6076 sband,
6077 nla_data(tb[NL80211_TXRATE_MCS]),
6078 nla_len(tb[NL80211_TXRATE_MCS]),
6079 mask.control[band].mcs))
6080 return -EINVAL;
6081 }
6082
6083 if (mask.control[band].legacy == 0) {
6084 /* don't allow empty legacy rates if HT
6085 * is not even supported. */
6086 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6087 return -EINVAL;
6088
6089 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6090 if (mask.control[band].mcs[i])
6091 break;
6092
6093 /* legacy and mcs rates may not be both empty */
6094 if (i == IEEE80211_HT_MCS_MASK_LEN)
6095 return -EINVAL;
6096 }
6097 }
6098
6099 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
6100 }
6101
6102 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6103 {
6104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6105 struct wireless_dev *wdev = info->user_ptr[1];
6106 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6107
6108 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6109 return -EINVAL;
6110
6111 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6112 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6113
6114 switch (wdev->iftype) {
6115 case NL80211_IFTYPE_STATION:
6116 case NL80211_IFTYPE_ADHOC:
6117 case NL80211_IFTYPE_P2P_CLIENT:
6118 case NL80211_IFTYPE_AP:
6119 case NL80211_IFTYPE_AP_VLAN:
6120 case NL80211_IFTYPE_MESH_POINT:
6121 case NL80211_IFTYPE_P2P_GO:
6122 case NL80211_IFTYPE_P2P_DEVICE:
6123 break;
6124 default:
6125 return -EOPNOTSUPP;
6126 }
6127
6128 /* not much point in registering if we can't reply */
6129 if (!rdev->ops->mgmt_tx)
6130 return -EOPNOTSUPP;
6131
6132 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
6133 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6134 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6135 }
6136
6137 static int nl80211_tx_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 struct ieee80211_channel *chan;
6142 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6143 bool channel_type_valid = false;
6144 u32 freq;
6145 int err;
6146 void *hdr = NULL;
6147 u64 cookie;
6148 struct sk_buff *msg = NULL;
6149 unsigned int wait = 0;
6150 bool offchan, no_cck, dont_wait_for_ack;
6151
6152 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6153
6154 if (!info->attrs[NL80211_ATTR_FRAME] ||
6155 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6156 return -EINVAL;
6157
6158 if (!rdev->ops->mgmt_tx)
6159 return -EOPNOTSUPP;
6160
6161 switch (wdev->iftype) {
6162 case NL80211_IFTYPE_STATION:
6163 case NL80211_IFTYPE_ADHOC:
6164 case NL80211_IFTYPE_P2P_CLIENT:
6165 case NL80211_IFTYPE_AP:
6166 case NL80211_IFTYPE_AP_VLAN:
6167 case NL80211_IFTYPE_MESH_POINT:
6168 case NL80211_IFTYPE_P2P_GO:
6169 case NL80211_IFTYPE_P2P_DEVICE:
6170 break;
6171 default:
6172 return -EOPNOTSUPP;
6173 }
6174
6175 if (info->attrs[NL80211_ATTR_DURATION]) {
6176 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6177 return -EINVAL;
6178 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6179
6180 /*
6181 * We should wait on the channel for at least a minimum amount
6182 * of time (10ms) but no longer than the driver supports.
6183 */
6184 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6185 wait > rdev->wiphy.max_remain_on_channel_duration)
6186 return -EINVAL;
6187
6188 }
6189
6190 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
6191 if (!nl80211_valid_channel_type(info, &channel_type))
6192 return -EINVAL;
6193 channel_type_valid = true;
6194 }
6195
6196 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6197
6198 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6199 return -EINVAL;
6200
6201 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6202
6203 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6204 chan = rdev_freq_to_chan(rdev, freq, channel_type);
6205 if (chan == NULL)
6206 return -EINVAL;
6207
6208 if (!dont_wait_for_ack) {
6209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6210 if (!msg)
6211 return -ENOMEM;
6212
6213 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6214 NL80211_CMD_FRAME);
6215
6216 if (IS_ERR(hdr)) {
6217 err = PTR_ERR(hdr);
6218 goto free_msg;
6219 }
6220 }
6221
6222 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chan, offchan, channel_type,
6223 channel_type_valid, wait,
6224 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6225 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6226 no_cck, dont_wait_for_ack, &cookie);
6227 if (err)
6228 goto free_msg;
6229
6230 if (msg) {
6231 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6232 goto nla_put_failure;
6233
6234 genlmsg_end(msg, hdr);
6235 return genlmsg_reply(msg, info);
6236 }
6237
6238 return 0;
6239
6240 nla_put_failure:
6241 err = -ENOBUFS;
6242 free_msg:
6243 nlmsg_free(msg);
6244 return err;
6245 }
6246
6247 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6248 {
6249 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6250 struct wireless_dev *wdev = info->user_ptr[1];
6251 u64 cookie;
6252
6253 if (!info->attrs[NL80211_ATTR_COOKIE])
6254 return -EINVAL;
6255
6256 if (!rdev->ops->mgmt_tx_cancel_wait)
6257 return -EOPNOTSUPP;
6258
6259 switch (wdev->iftype) {
6260 case NL80211_IFTYPE_STATION:
6261 case NL80211_IFTYPE_ADHOC:
6262 case NL80211_IFTYPE_P2P_CLIENT:
6263 case NL80211_IFTYPE_AP:
6264 case NL80211_IFTYPE_AP_VLAN:
6265 case NL80211_IFTYPE_P2P_GO:
6266 case NL80211_IFTYPE_P2P_DEVICE:
6267 break;
6268 default:
6269 return -EOPNOTSUPP;
6270 }
6271
6272 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6273
6274 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, wdev, cookie);
6275 }
6276
6277 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6278 {
6279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6280 struct wireless_dev *wdev;
6281 struct net_device *dev = info->user_ptr[1];
6282 u8 ps_state;
6283 bool state;
6284 int err;
6285
6286 if (!info->attrs[NL80211_ATTR_PS_STATE])
6287 return -EINVAL;
6288
6289 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6290
6291 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6292 return -EINVAL;
6293
6294 wdev = dev->ieee80211_ptr;
6295
6296 if (!rdev->ops->set_power_mgmt)
6297 return -EOPNOTSUPP;
6298
6299 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6300
6301 if (state == wdev->ps)
6302 return 0;
6303
6304 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6305 wdev->ps_timeout);
6306 if (!err)
6307 wdev->ps = state;
6308 return err;
6309 }
6310
6311 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6312 {
6313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6314 enum nl80211_ps_state ps_state;
6315 struct wireless_dev *wdev;
6316 struct net_device *dev = info->user_ptr[1];
6317 struct sk_buff *msg;
6318 void *hdr;
6319 int err;
6320
6321 wdev = dev->ieee80211_ptr;
6322
6323 if (!rdev->ops->set_power_mgmt)
6324 return -EOPNOTSUPP;
6325
6326 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6327 if (!msg)
6328 return -ENOMEM;
6329
6330 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6331 NL80211_CMD_GET_POWER_SAVE);
6332 if (!hdr) {
6333 err = -ENOBUFS;
6334 goto free_msg;
6335 }
6336
6337 if (wdev->ps)
6338 ps_state = NL80211_PS_ENABLED;
6339 else
6340 ps_state = NL80211_PS_DISABLED;
6341
6342 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6343 goto nla_put_failure;
6344
6345 genlmsg_end(msg, hdr);
6346 return genlmsg_reply(msg, info);
6347
6348 nla_put_failure:
6349 err = -ENOBUFS;
6350 free_msg:
6351 nlmsg_free(msg);
6352 return err;
6353 }
6354
6355 static struct nla_policy
6356 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6357 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6358 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6359 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6360 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6361 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6362 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6363 };
6364
6365 static int nl80211_set_cqm_txe(struct genl_info *info,
6366 u32 rate, u32 pkts, u32 intvl)
6367 {
6368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6369 struct wireless_dev *wdev;
6370 struct net_device *dev = info->user_ptr[1];
6371
6372 if ((rate < 0 || rate > 100) ||
6373 (intvl < 0 || intvl > NL80211_CQM_TXE_MAX_INTVL))
6374 return -EINVAL;
6375
6376 wdev = dev->ieee80211_ptr;
6377
6378 if (!rdev->ops->set_cqm_txe_config)
6379 return -EOPNOTSUPP;
6380
6381 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6382 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6383 return -EOPNOTSUPP;
6384
6385 return rdev->ops->set_cqm_txe_config(wdev->wiphy, dev,
6386 rate, pkts, intvl);
6387 }
6388
6389 static int nl80211_set_cqm_rssi(struct genl_info *info,
6390 s32 threshold, u32 hysteresis)
6391 {
6392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6393 struct wireless_dev *wdev;
6394 struct net_device *dev = info->user_ptr[1];
6395
6396 if (threshold > 0)
6397 return -EINVAL;
6398
6399 wdev = dev->ieee80211_ptr;
6400
6401 if (!rdev->ops->set_cqm_rssi_config)
6402 return -EOPNOTSUPP;
6403
6404 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6405 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6406 return -EOPNOTSUPP;
6407
6408 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6409 threshold, hysteresis);
6410 }
6411
6412 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6413 {
6414 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6415 struct nlattr *cqm;
6416 int err;
6417
6418 cqm = info->attrs[NL80211_ATTR_CQM];
6419 if (!cqm) {
6420 err = -EINVAL;
6421 goto out;
6422 }
6423
6424 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6425 nl80211_attr_cqm_policy);
6426 if (err)
6427 goto out;
6428
6429 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6430 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6431 s32 threshold;
6432 u32 hysteresis;
6433 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6434 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6435 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6436 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6437 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6438 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6439 u32 rate, pkts, intvl;
6440 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6441 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6442 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6443 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6444 } else
6445 err = -EINVAL;
6446
6447 out:
6448 return err;
6449 }
6450
6451 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6452 {
6453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6454 struct net_device *dev = info->user_ptr[1];
6455 struct mesh_config cfg;
6456 struct mesh_setup setup;
6457 int err;
6458
6459 /* start with default */
6460 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6461 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6462
6463 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6464 /* and parse parameters if given */
6465 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6466 if (err)
6467 return err;
6468 }
6469
6470 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6471 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6472 return -EINVAL;
6473
6474 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6475 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6476
6477 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6478 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6479 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6480 return -EINVAL;
6481
6482 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6483 /* parse additional setup parameters if given */
6484 err = nl80211_parse_mesh_setup(info, &setup);
6485 if (err)
6486 return err;
6487 }
6488
6489 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6490 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6491
6492 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6493 !nl80211_valid_channel_type(info, &channel_type))
6494 return -EINVAL;
6495
6496 setup.channel = rdev_freq_to_chan(rdev,
6497 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6498 channel_type);
6499 if (!setup.channel)
6500 return -EINVAL;
6501 setup.channel_type = channel_type;
6502 } else {
6503 /* cfg80211_join_mesh() will sort it out */
6504 setup.channel = NULL;
6505 }
6506
6507 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6508 }
6509
6510 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6511 {
6512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6513 struct net_device *dev = info->user_ptr[1];
6514
6515 return cfg80211_leave_mesh(rdev, dev);
6516 }
6517
6518 #ifdef CONFIG_PM
6519 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6520 {
6521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6522 struct sk_buff *msg;
6523 void *hdr;
6524
6525 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6526 return -EOPNOTSUPP;
6527
6528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6529 if (!msg)
6530 return -ENOMEM;
6531
6532 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6533 NL80211_CMD_GET_WOWLAN);
6534 if (!hdr)
6535 goto nla_put_failure;
6536
6537 if (rdev->wowlan) {
6538 struct nlattr *nl_wowlan;
6539
6540 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6541 if (!nl_wowlan)
6542 goto nla_put_failure;
6543
6544 if ((rdev->wowlan->any &&
6545 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6546 (rdev->wowlan->disconnect &&
6547 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6548 (rdev->wowlan->magic_pkt &&
6549 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6550 (rdev->wowlan->gtk_rekey_failure &&
6551 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6552 (rdev->wowlan->eap_identity_req &&
6553 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6554 (rdev->wowlan->four_way_handshake &&
6555 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6556 (rdev->wowlan->rfkill_release &&
6557 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6558 goto nla_put_failure;
6559 if (rdev->wowlan->n_patterns) {
6560 struct nlattr *nl_pats, *nl_pat;
6561 int i, pat_len;
6562
6563 nl_pats = nla_nest_start(msg,
6564 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6565 if (!nl_pats)
6566 goto nla_put_failure;
6567
6568 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6569 nl_pat = nla_nest_start(msg, i + 1);
6570 if (!nl_pat)
6571 goto nla_put_failure;
6572 pat_len = rdev->wowlan->patterns[i].pattern_len;
6573 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6574 DIV_ROUND_UP(pat_len, 8),
6575 rdev->wowlan->patterns[i].mask) ||
6576 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6577 pat_len,
6578 rdev->wowlan->patterns[i].pattern))
6579 goto nla_put_failure;
6580 nla_nest_end(msg, nl_pat);
6581 }
6582 nla_nest_end(msg, nl_pats);
6583 }
6584
6585 nla_nest_end(msg, nl_wowlan);
6586 }
6587
6588 genlmsg_end(msg, hdr);
6589 return genlmsg_reply(msg, info);
6590
6591 nla_put_failure:
6592 nlmsg_free(msg);
6593 return -ENOBUFS;
6594 }
6595
6596 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6597 {
6598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6599 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6600 struct cfg80211_wowlan new_triggers = {};
6601 struct cfg80211_wowlan *ntrig;
6602 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6603 int err, i;
6604 bool prev_enabled = rdev->wowlan;
6605
6606 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6607 return -EOPNOTSUPP;
6608
6609 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6610 cfg80211_rdev_free_wowlan(rdev);
6611 rdev->wowlan = NULL;
6612 goto set_wakeup;
6613 }
6614
6615 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6616 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6617 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6618 nl80211_wowlan_policy);
6619 if (err)
6620 return err;
6621
6622 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6623 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6624 return -EINVAL;
6625 new_triggers.any = true;
6626 }
6627
6628 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6629 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6630 return -EINVAL;
6631 new_triggers.disconnect = true;
6632 }
6633
6634 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6635 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6636 return -EINVAL;
6637 new_triggers.magic_pkt = true;
6638 }
6639
6640 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6641 return -EINVAL;
6642
6643 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6644 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6645 return -EINVAL;
6646 new_triggers.gtk_rekey_failure = true;
6647 }
6648
6649 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6650 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6651 return -EINVAL;
6652 new_triggers.eap_identity_req = true;
6653 }
6654
6655 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6656 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6657 return -EINVAL;
6658 new_triggers.four_way_handshake = true;
6659 }
6660
6661 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6662 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6663 return -EINVAL;
6664 new_triggers.rfkill_release = true;
6665 }
6666
6667 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6668 struct nlattr *pat;
6669 int n_patterns = 0;
6670 int rem, pat_len, mask_len;
6671 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6672
6673 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6674 rem)
6675 n_patterns++;
6676 if (n_patterns > wowlan->n_patterns)
6677 return -EINVAL;
6678
6679 new_triggers.patterns = kcalloc(n_patterns,
6680 sizeof(new_triggers.patterns[0]),
6681 GFP_KERNEL);
6682 if (!new_triggers.patterns)
6683 return -ENOMEM;
6684
6685 new_triggers.n_patterns = n_patterns;
6686 i = 0;
6687
6688 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6689 rem) {
6690 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6691 nla_data(pat), nla_len(pat), NULL);
6692 err = -EINVAL;
6693 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6694 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6695 goto error;
6696 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6697 mask_len = DIV_ROUND_UP(pat_len, 8);
6698 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6699 mask_len)
6700 goto error;
6701 if (pat_len > wowlan->pattern_max_len ||
6702 pat_len < wowlan->pattern_min_len)
6703 goto error;
6704
6705 new_triggers.patterns[i].mask =
6706 kmalloc(mask_len + pat_len, GFP_KERNEL);
6707 if (!new_triggers.patterns[i].mask) {
6708 err = -ENOMEM;
6709 goto error;
6710 }
6711 new_triggers.patterns[i].pattern =
6712 new_triggers.patterns[i].mask + mask_len;
6713 memcpy(new_triggers.patterns[i].mask,
6714 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6715 mask_len);
6716 new_triggers.patterns[i].pattern_len = pat_len;
6717 memcpy(new_triggers.patterns[i].pattern,
6718 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6719 pat_len);
6720 i++;
6721 }
6722 }
6723
6724 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6725 if (!ntrig) {
6726 err = -ENOMEM;
6727 goto error;
6728 }
6729 cfg80211_rdev_free_wowlan(rdev);
6730 rdev->wowlan = ntrig;
6731
6732 set_wakeup:
6733 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6734 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6735
6736 return 0;
6737 error:
6738 for (i = 0; i < new_triggers.n_patterns; i++)
6739 kfree(new_triggers.patterns[i].mask);
6740 kfree(new_triggers.patterns);
6741 return err;
6742 }
6743 #endif
6744
6745 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6746 {
6747 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6748 struct net_device *dev = info->user_ptr[1];
6749 struct wireless_dev *wdev = dev->ieee80211_ptr;
6750 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6751 struct cfg80211_gtk_rekey_data rekey_data;
6752 int err;
6753
6754 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6755 return -EINVAL;
6756
6757 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6758 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6759 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6760 nl80211_rekey_policy);
6761 if (err)
6762 return err;
6763
6764 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6765 return -ERANGE;
6766 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6767 return -ERANGE;
6768 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6769 return -ERANGE;
6770
6771 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6772 NL80211_KEK_LEN);
6773 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6774 NL80211_KCK_LEN);
6775 memcpy(rekey_data.replay_ctr,
6776 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6777 NL80211_REPLAY_CTR_LEN);
6778
6779 wdev_lock(wdev);
6780 if (!wdev->current_bss) {
6781 err = -ENOTCONN;
6782 goto out;
6783 }
6784
6785 if (!rdev->ops->set_rekey_data) {
6786 err = -EOPNOTSUPP;
6787 goto out;
6788 }
6789
6790 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6791 out:
6792 wdev_unlock(wdev);
6793 return err;
6794 }
6795
6796 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6797 struct genl_info *info)
6798 {
6799 struct net_device *dev = info->user_ptr[1];
6800 struct wireless_dev *wdev = dev->ieee80211_ptr;
6801
6802 if (wdev->iftype != NL80211_IFTYPE_AP &&
6803 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6804 return -EINVAL;
6805
6806 if (wdev->ap_unexpected_nlportid)
6807 return -EBUSY;
6808
6809 wdev->ap_unexpected_nlportid = info->snd_portid;
6810 return 0;
6811 }
6812
6813 static int nl80211_probe_client(struct sk_buff *skb,
6814 struct genl_info *info)
6815 {
6816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6817 struct net_device *dev = info->user_ptr[1];
6818 struct wireless_dev *wdev = dev->ieee80211_ptr;
6819 struct sk_buff *msg;
6820 void *hdr;
6821 const u8 *addr;
6822 u64 cookie;
6823 int err;
6824
6825 if (wdev->iftype != NL80211_IFTYPE_AP &&
6826 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6827 return -EOPNOTSUPP;
6828
6829 if (!info->attrs[NL80211_ATTR_MAC])
6830 return -EINVAL;
6831
6832 if (!rdev->ops->probe_client)
6833 return -EOPNOTSUPP;
6834
6835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6836 if (!msg)
6837 return -ENOMEM;
6838
6839 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6840 NL80211_CMD_PROBE_CLIENT);
6841
6842 if (IS_ERR(hdr)) {
6843 err = PTR_ERR(hdr);
6844 goto free_msg;
6845 }
6846
6847 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6848
6849 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6850 if (err)
6851 goto free_msg;
6852
6853 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6854 goto nla_put_failure;
6855
6856 genlmsg_end(msg, hdr);
6857
6858 return genlmsg_reply(msg, info);
6859
6860 nla_put_failure:
6861 err = -ENOBUFS;
6862 free_msg:
6863 nlmsg_free(msg);
6864 return err;
6865 }
6866
6867 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6868 {
6869 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6870
6871 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6872 return -EOPNOTSUPP;
6873
6874 if (rdev->ap_beacons_nlportid)
6875 return -EBUSY;
6876
6877 rdev->ap_beacons_nlportid = info->snd_portid;
6878
6879 return 0;
6880 }
6881
6882 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
6883 {
6884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6885 struct wireless_dev *wdev = info->user_ptr[1];
6886 int err;
6887
6888 if (!rdev->ops->start_p2p_device)
6889 return -EOPNOTSUPP;
6890
6891 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6892 return -EOPNOTSUPP;
6893
6894 if (wdev->p2p_started)
6895 return 0;
6896
6897 mutex_lock(&rdev->devlist_mtx);
6898 err = cfg80211_can_add_interface(rdev, wdev->iftype);
6899 mutex_unlock(&rdev->devlist_mtx);
6900 if (err)
6901 return err;
6902
6903 err = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
6904 if (err)
6905 return err;
6906
6907 wdev->p2p_started = true;
6908 mutex_lock(&rdev->devlist_mtx);
6909 rdev->opencount++;
6910 mutex_unlock(&rdev->devlist_mtx);
6911
6912 return 0;
6913 }
6914
6915 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
6916 {
6917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6918 struct wireless_dev *wdev = info->user_ptr[1];
6919
6920 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6921 return -EOPNOTSUPP;
6922
6923 if (!rdev->ops->stop_p2p_device)
6924 return -EOPNOTSUPP;
6925
6926 if (!wdev->p2p_started)
6927 return 0;
6928
6929 rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
6930 wdev->p2p_started = false;
6931
6932 mutex_lock(&rdev->devlist_mtx);
6933 rdev->opencount--;
6934 mutex_unlock(&rdev->devlist_mtx);
6935
6936 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
6937 rdev->scan_req->aborted = true;
6938 ___cfg80211_scan_done(rdev, true);
6939 }
6940
6941 return 0;
6942 }
6943
6944 #define NL80211_FLAG_NEED_WIPHY 0x01
6945 #define NL80211_FLAG_NEED_NETDEV 0x02
6946 #define NL80211_FLAG_NEED_RTNL 0x04
6947 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6948 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6949 NL80211_FLAG_CHECK_NETDEV_UP)
6950 #define NL80211_FLAG_NEED_WDEV 0x10
6951 /* If a netdev is associated, it must be UP, P2P must be started */
6952 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
6953 NL80211_FLAG_CHECK_NETDEV_UP)
6954
6955 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6956 struct genl_info *info)
6957 {
6958 struct cfg80211_registered_device *rdev;
6959 struct wireless_dev *wdev;
6960 struct net_device *dev;
6961 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6962
6963 if (rtnl)
6964 rtnl_lock();
6965
6966 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6967 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6968 if (IS_ERR(rdev)) {
6969 if (rtnl)
6970 rtnl_unlock();
6971 return PTR_ERR(rdev);
6972 }
6973 info->user_ptr[0] = rdev;
6974 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
6975 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
6976 mutex_lock(&cfg80211_mutex);
6977 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
6978 info->attrs);
6979 if (IS_ERR(wdev)) {
6980 mutex_unlock(&cfg80211_mutex);
6981 if (rtnl)
6982 rtnl_unlock();
6983 return PTR_ERR(wdev);
6984 }
6985
6986 dev = wdev->netdev;
6987 rdev = wiphy_to_dev(wdev->wiphy);
6988
6989 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6990 if (!dev) {
6991 mutex_unlock(&cfg80211_mutex);
6992 if (rtnl)
6993 rtnl_unlock();
6994 return -EINVAL;
6995 }
6996
6997 info->user_ptr[1] = dev;
6998 } else {
6999 info->user_ptr[1] = wdev;
7000 }
7001
7002 if (dev) {
7003 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
7004 !netif_running(dev)) {
7005 mutex_unlock(&cfg80211_mutex);
7006 if (rtnl)
7007 rtnl_unlock();
7008 return -ENETDOWN;
7009 }
7010
7011 dev_hold(dev);
7012 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
7013 if (!wdev->p2p_started) {
7014 mutex_unlock(&cfg80211_mutex);
7015 if (rtnl)
7016 rtnl_unlock();
7017 return -ENETDOWN;
7018 }
7019 }
7020
7021 cfg80211_lock_rdev(rdev);
7022
7023 mutex_unlock(&cfg80211_mutex);
7024
7025 info->user_ptr[0] = rdev;
7026 }
7027
7028 return 0;
7029 }
7030
7031 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
7032 struct genl_info *info)
7033 {
7034 if (info->user_ptr[0])
7035 cfg80211_unlock_rdev(info->user_ptr[0]);
7036 if (info->user_ptr[1]) {
7037 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7038 struct wireless_dev *wdev = info->user_ptr[1];
7039
7040 if (wdev->netdev)
7041 dev_put(wdev->netdev);
7042 } else {
7043 dev_put(info->user_ptr[1]);
7044 }
7045 }
7046 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7047 rtnl_unlock();
7048 }
7049
7050 static struct genl_ops nl80211_ops[] = {
7051 {
7052 .cmd = NL80211_CMD_GET_WIPHY,
7053 .doit = nl80211_get_wiphy,
7054 .dumpit = nl80211_dump_wiphy,
7055 .policy = nl80211_policy,
7056 /* can be retrieved by unprivileged users */
7057 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7058 },
7059 {
7060 .cmd = NL80211_CMD_SET_WIPHY,
7061 .doit = nl80211_set_wiphy,
7062 .policy = nl80211_policy,
7063 .flags = GENL_ADMIN_PERM,
7064 .internal_flags = NL80211_FLAG_NEED_RTNL,
7065 },
7066 {
7067 .cmd = NL80211_CMD_GET_INTERFACE,
7068 .doit = nl80211_get_interface,
7069 .dumpit = nl80211_dump_interface,
7070 .policy = nl80211_policy,
7071 /* can be retrieved by unprivileged users */
7072 .internal_flags = NL80211_FLAG_NEED_WDEV,
7073 },
7074 {
7075 .cmd = NL80211_CMD_SET_INTERFACE,
7076 .doit = nl80211_set_interface,
7077 .policy = nl80211_policy,
7078 .flags = GENL_ADMIN_PERM,
7079 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7080 NL80211_FLAG_NEED_RTNL,
7081 },
7082 {
7083 .cmd = NL80211_CMD_NEW_INTERFACE,
7084 .doit = nl80211_new_interface,
7085 .policy = nl80211_policy,
7086 .flags = GENL_ADMIN_PERM,
7087 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7088 NL80211_FLAG_NEED_RTNL,
7089 },
7090 {
7091 .cmd = NL80211_CMD_DEL_INTERFACE,
7092 .doit = nl80211_del_interface,
7093 .policy = nl80211_policy,
7094 .flags = GENL_ADMIN_PERM,
7095 .internal_flags = NL80211_FLAG_NEED_WDEV |
7096 NL80211_FLAG_NEED_RTNL,
7097 },
7098 {
7099 .cmd = NL80211_CMD_GET_KEY,
7100 .doit = nl80211_get_key,
7101 .policy = nl80211_policy,
7102 .flags = GENL_ADMIN_PERM,
7103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7104 NL80211_FLAG_NEED_RTNL,
7105 },
7106 {
7107 .cmd = NL80211_CMD_SET_KEY,
7108 .doit = nl80211_set_key,
7109 .policy = nl80211_policy,
7110 .flags = GENL_ADMIN_PERM,
7111 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7112 NL80211_FLAG_NEED_RTNL,
7113 },
7114 {
7115 .cmd = NL80211_CMD_NEW_KEY,
7116 .doit = nl80211_new_key,
7117 .policy = nl80211_policy,
7118 .flags = GENL_ADMIN_PERM,
7119 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7120 NL80211_FLAG_NEED_RTNL,
7121 },
7122 {
7123 .cmd = NL80211_CMD_DEL_KEY,
7124 .doit = nl80211_del_key,
7125 .policy = nl80211_policy,
7126 .flags = GENL_ADMIN_PERM,
7127 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7128 NL80211_FLAG_NEED_RTNL,
7129 },
7130 {
7131 .cmd = NL80211_CMD_SET_BEACON,
7132 .policy = nl80211_policy,
7133 .flags = GENL_ADMIN_PERM,
7134 .doit = nl80211_set_beacon,
7135 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7136 NL80211_FLAG_NEED_RTNL,
7137 },
7138 {
7139 .cmd = NL80211_CMD_START_AP,
7140 .policy = nl80211_policy,
7141 .flags = GENL_ADMIN_PERM,
7142 .doit = nl80211_start_ap,
7143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7144 NL80211_FLAG_NEED_RTNL,
7145 },
7146 {
7147 .cmd = NL80211_CMD_STOP_AP,
7148 .policy = nl80211_policy,
7149 .flags = GENL_ADMIN_PERM,
7150 .doit = nl80211_stop_ap,
7151 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7152 NL80211_FLAG_NEED_RTNL,
7153 },
7154 {
7155 .cmd = NL80211_CMD_GET_STATION,
7156 .doit = nl80211_get_station,
7157 .dumpit = nl80211_dump_station,
7158 .policy = nl80211_policy,
7159 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7160 NL80211_FLAG_NEED_RTNL,
7161 },
7162 {
7163 .cmd = NL80211_CMD_SET_STATION,
7164 .doit = nl80211_set_station,
7165 .policy = nl80211_policy,
7166 .flags = GENL_ADMIN_PERM,
7167 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7168 NL80211_FLAG_NEED_RTNL,
7169 },
7170 {
7171 .cmd = NL80211_CMD_NEW_STATION,
7172 .doit = nl80211_new_station,
7173 .policy = nl80211_policy,
7174 .flags = GENL_ADMIN_PERM,
7175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7176 NL80211_FLAG_NEED_RTNL,
7177 },
7178 {
7179 .cmd = NL80211_CMD_DEL_STATION,
7180 .doit = nl80211_del_station,
7181 .policy = nl80211_policy,
7182 .flags = GENL_ADMIN_PERM,
7183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7184 NL80211_FLAG_NEED_RTNL,
7185 },
7186 {
7187 .cmd = NL80211_CMD_GET_MPATH,
7188 .doit = nl80211_get_mpath,
7189 .dumpit = nl80211_dump_mpath,
7190 .policy = nl80211_policy,
7191 .flags = GENL_ADMIN_PERM,
7192 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7193 NL80211_FLAG_NEED_RTNL,
7194 },
7195 {
7196 .cmd = NL80211_CMD_SET_MPATH,
7197 .doit = nl80211_set_mpath,
7198 .policy = nl80211_policy,
7199 .flags = GENL_ADMIN_PERM,
7200 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7201 NL80211_FLAG_NEED_RTNL,
7202 },
7203 {
7204 .cmd = NL80211_CMD_NEW_MPATH,
7205 .doit = nl80211_new_mpath,
7206 .policy = nl80211_policy,
7207 .flags = GENL_ADMIN_PERM,
7208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7209 NL80211_FLAG_NEED_RTNL,
7210 },
7211 {
7212 .cmd = NL80211_CMD_DEL_MPATH,
7213 .doit = nl80211_del_mpath,
7214 .policy = nl80211_policy,
7215 .flags = GENL_ADMIN_PERM,
7216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7217 NL80211_FLAG_NEED_RTNL,
7218 },
7219 {
7220 .cmd = NL80211_CMD_SET_BSS,
7221 .doit = nl80211_set_bss,
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_GET_REG,
7229 .doit = nl80211_get_reg,
7230 .policy = nl80211_policy,
7231 /* can be retrieved by unprivileged users */
7232 },
7233 {
7234 .cmd = NL80211_CMD_SET_REG,
7235 .doit = nl80211_set_reg,
7236 .policy = nl80211_policy,
7237 .flags = GENL_ADMIN_PERM,
7238 },
7239 {
7240 .cmd = NL80211_CMD_REQ_SET_REG,
7241 .doit = nl80211_req_set_reg,
7242 .policy = nl80211_policy,
7243 .flags = GENL_ADMIN_PERM,
7244 },
7245 {
7246 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7247 .doit = nl80211_get_mesh_config,
7248 .policy = nl80211_policy,
7249 /* can be retrieved by unprivileged users */
7250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7251 NL80211_FLAG_NEED_RTNL,
7252 },
7253 {
7254 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7255 .doit = nl80211_update_mesh_config,
7256 .policy = nl80211_policy,
7257 .flags = GENL_ADMIN_PERM,
7258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7259 NL80211_FLAG_NEED_RTNL,
7260 },
7261 {
7262 .cmd = NL80211_CMD_TRIGGER_SCAN,
7263 .doit = nl80211_trigger_scan,
7264 .policy = nl80211_policy,
7265 .flags = GENL_ADMIN_PERM,
7266 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7267 NL80211_FLAG_NEED_RTNL,
7268 },
7269 {
7270 .cmd = NL80211_CMD_GET_SCAN,
7271 .policy = nl80211_policy,
7272 .dumpit = nl80211_dump_scan,
7273 },
7274 {
7275 .cmd = NL80211_CMD_START_SCHED_SCAN,
7276 .doit = nl80211_start_sched_scan,
7277 .policy = nl80211_policy,
7278 .flags = GENL_ADMIN_PERM,
7279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7280 NL80211_FLAG_NEED_RTNL,
7281 },
7282 {
7283 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7284 .doit = nl80211_stop_sched_scan,
7285 .policy = nl80211_policy,
7286 .flags = GENL_ADMIN_PERM,
7287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7288 NL80211_FLAG_NEED_RTNL,
7289 },
7290 {
7291 .cmd = NL80211_CMD_AUTHENTICATE,
7292 .doit = nl80211_authenticate,
7293 .policy = nl80211_policy,
7294 .flags = GENL_ADMIN_PERM,
7295 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7296 NL80211_FLAG_NEED_RTNL,
7297 },
7298 {
7299 .cmd = NL80211_CMD_ASSOCIATE,
7300 .doit = nl80211_associate,
7301 .policy = nl80211_policy,
7302 .flags = GENL_ADMIN_PERM,
7303 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7304 NL80211_FLAG_NEED_RTNL,
7305 },
7306 {
7307 .cmd = NL80211_CMD_DEAUTHENTICATE,
7308 .doit = nl80211_deauthenticate,
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_DISASSOCIATE,
7316 .doit = nl80211_disassociate,
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_JOIN_IBSS,
7324 .doit = nl80211_join_ibss,
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_LEAVE_IBSS,
7332 .doit = nl80211_leave_ibss,
7333 .policy = nl80211_policy,
7334 .flags = GENL_ADMIN_PERM,
7335 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7336 NL80211_FLAG_NEED_RTNL,
7337 },
7338 #ifdef CONFIG_NL80211_TESTMODE
7339 {
7340 .cmd = NL80211_CMD_TESTMODE,
7341 .doit = nl80211_testmode_do,
7342 .dumpit = nl80211_testmode_dump,
7343 .policy = nl80211_policy,
7344 .flags = GENL_ADMIN_PERM,
7345 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7346 NL80211_FLAG_NEED_RTNL,
7347 },
7348 #endif
7349 {
7350 .cmd = NL80211_CMD_CONNECT,
7351 .doit = nl80211_connect,
7352 .policy = nl80211_policy,
7353 .flags = GENL_ADMIN_PERM,
7354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7355 NL80211_FLAG_NEED_RTNL,
7356 },
7357 {
7358 .cmd = NL80211_CMD_DISCONNECT,
7359 .doit = nl80211_disconnect,
7360 .policy = nl80211_policy,
7361 .flags = GENL_ADMIN_PERM,
7362 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7363 NL80211_FLAG_NEED_RTNL,
7364 },
7365 {
7366 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7367 .doit = nl80211_wiphy_netns,
7368 .policy = nl80211_policy,
7369 .flags = GENL_ADMIN_PERM,
7370 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7371 NL80211_FLAG_NEED_RTNL,
7372 },
7373 {
7374 .cmd = NL80211_CMD_GET_SURVEY,
7375 .policy = nl80211_policy,
7376 .dumpit = nl80211_dump_survey,
7377 },
7378 {
7379 .cmd = NL80211_CMD_SET_PMKSA,
7380 .doit = nl80211_setdel_pmksa,
7381 .policy = nl80211_policy,
7382 .flags = GENL_ADMIN_PERM,
7383 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7384 NL80211_FLAG_NEED_RTNL,
7385 },
7386 {
7387 .cmd = NL80211_CMD_DEL_PMKSA,
7388 .doit = nl80211_setdel_pmksa,
7389 .policy = nl80211_policy,
7390 .flags = GENL_ADMIN_PERM,
7391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7392 NL80211_FLAG_NEED_RTNL,
7393 },
7394 {
7395 .cmd = NL80211_CMD_FLUSH_PMKSA,
7396 .doit = nl80211_flush_pmksa,
7397 .policy = nl80211_policy,
7398 .flags = GENL_ADMIN_PERM,
7399 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7400 NL80211_FLAG_NEED_RTNL,
7401 },
7402 {
7403 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7404 .doit = nl80211_remain_on_channel,
7405 .policy = nl80211_policy,
7406 .flags = GENL_ADMIN_PERM,
7407 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7408 NL80211_FLAG_NEED_RTNL,
7409 },
7410 {
7411 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7412 .doit = nl80211_cancel_remain_on_channel,
7413 .policy = nl80211_policy,
7414 .flags = GENL_ADMIN_PERM,
7415 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7416 NL80211_FLAG_NEED_RTNL,
7417 },
7418 {
7419 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7420 .doit = nl80211_set_tx_bitrate_mask,
7421 .policy = nl80211_policy,
7422 .flags = GENL_ADMIN_PERM,
7423 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7424 NL80211_FLAG_NEED_RTNL,
7425 },
7426 {
7427 .cmd = NL80211_CMD_REGISTER_FRAME,
7428 .doit = nl80211_register_mgmt,
7429 .policy = nl80211_policy,
7430 .flags = GENL_ADMIN_PERM,
7431 .internal_flags = NL80211_FLAG_NEED_WDEV |
7432 NL80211_FLAG_NEED_RTNL,
7433 },
7434 {
7435 .cmd = NL80211_CMD_FRAME,
7436 .doit = nl80211_tx_mgmt,
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_FRAME_WAIT_CANCEL,
7444 .doit = nl80211_tx_mgmt_cancel_wait,
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_POWER_SAVE,
7452 .doit = nl80211_set_power_save,
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_GET_POWER_SAVE,
7460 .doit = nl80211_get_power_save,
7461 .policy = nl80211_policy,
7462 /* can be retrieved by unprivileged users */
7463 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7464 NL80211_FLAG_NEED_RTNL,
7465 },
7466 {
7467 .cmd = NL80211_CMD_SET_CQM,
7468 .doit = nl80211_set_cqm,
7469 .policy = nl80211_policy,
7470 .flags = GENL_ADMIN_PERM,
7471 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7472 NL80211_FLAG_NEED_RTNL,
7473 },
7474 {
7475 .cmd = NL80211_CMD_SET_CHANNEL,
7476 .doit = nl80211_set_channel,
7477 .policy = nl80211_policy,
7478 .flags = GENL_ADMIN_PERM,
7479 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7480 NL80211_FLAG_NEED_RTNL,
7481 },
7482 {
7483 .cmd = NL80211_CMD_SET_WDS_PEER,
7484 .doit = nl80211_set_wds_peer,
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_JOIN_MESH,
7492 .doit = nl80211_join_mesh,
7493 .policy = nl80211_policy,
7494 .flags = GENL_ADMIN_PERM,
7495 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7496 NL80211_FLAG_NEED_RTNL,
7497 },
7498 {
7499 .cmd = NL80211_CMD_LEAVE_MESH,
7500 .doit = nl80211_leave_mesh,
7501 .policy = nl80211_policy,
7502 .flags = GENL_ADMIN_PERM,
7503 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7504 NL80211_FLAG_NEED_RTNL,
7505 },
7506 #ifdef CONFIG_PM
7507 {
7508 .cmd = NL80211_CMD_GET_WOWLAN,
7509 .doit = nl80211_get_wowlan,
7510 .policy = nl80211_policy,
7511 /* can be retrieved by unprivileged users */
7512 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7513 NL80211_FLAG_NEED_RTNL,
7514 },
7515 {
7516 .cmd = NL80211_CMD_SET_WOWLAN,
7517 .doit = nl80211_set_wowlan,
7518 .policy = nl80211_policy,
7519 .flags = GENL_ADMIN_PERM,
7520 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7521 NL80211_FLAG_NEED_RTNL,
7522 },
7523 #endif
7524 {
7525 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7526 .doit = nl80211_set_rekey_data,
7527 .policy = nl80211_policy,
7528 .flags = GENL_ADMIN_PERM,
7529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7530 NL80211_FLAG_NEED_RTNL,
7531 },
7532 {
7533 .cmd = NL80211_CMD_TDLS_MGMT,
7534 .doit = nl80211_tdls_mgmt,
7535 .policy = nl80211_policy,
7536 .flags = GENL_ADMIN_PERM,
7537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7538 NL80211_FLAG_NEED_RTNL,
7539 },
7540 {
7541 .cmd = NL80211_CMD_TDLS_OPER,
7542 .doit = nl80211_tdls_oper,
7543 .policy = nl80211_policy,
7544 .flags = GENL_ADMIN_PERM,
7545 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7546 NL80211_FLAG_NEED_RTNL,
7547 },
7548 {
7549 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7550 .doit = nl80211_register_unexpected_frame,
7551 .policy = nl80211_policy,
7552 .flags = GENL_ADMIN_PERM,
7553 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7554 NL80211_FLAG_NEED_RTNL,
7555 },
7556 {
7557 .cmd = NL80211_CMD_PROBE_CLIENT,
7558 .doit = nl80211_probe_client,
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_REGISTER_BEACONS,
7566 .doit = nl80211_register_beacons,
7567 .policy = nl80211_policy,
7568 .flags = GENL_ADMIN_PERM,
7569 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7570 NL80211_FLAG_NEED_RTNL,
7571 },
7572 {
7573 .cmd = NL80211_CMD_SET_NOACK_MAP,
7574 .doit = nl80211_set_noack_map,
7575 .policy = nl80211_policy,
7576 .flags = GENL_ADMIN_PERM,
7577 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7578 NL80211_FLAG_NEED_RTNL,
7579 },
7580 {
7581 .cmd = NL80211_CMD_START_P2P_DEVICE,
7582 .doit = nl80211_start_p2p_device,
7583 .policy = nl80211_policy,
7584 .flags = GENL_ADMIN_PERM,
7585 .internal_flags = NL80211_FLAG_NEED_WDEV |
7586 NL80211_FLAG_NEED_RTNL,
7587 },
7588 {
7589 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7590 .doit = nl80211_stop_p2p_device,
7591 .policy = nl80211_policy,
7592 .flags = GENL_ADMIN_PERM,
7593 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7594 NL80211_FLAG_NEED_RTNL,
7595 },
7596 };
7597
7598 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7599 .name = "mlme",
7600 };
7601
7602 /* multicast groups */
7603 static struct genl_multicast_group nl80211_config_mcgrp = {
7604 .name = "config",
7605 };
7606 static struct genl_multicast_group nl80211_scan_mcgrp = {
7607 .name = "scan",
7608 };
7609 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7610 .name = "regulatory",
7611 };
7612
7613 /* notification functions */
7614
7615 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7616 {
7617 struct sk_buff *msg;
7618
7619 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7620 if (!msg)
7621 return;
7622
7623 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7624 nlmsg_free(msg);
7625 return;
7626 }
7627
7628 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7629 nl80211_config_mcgrp.id, GFP_KERNEL);
7630 }
7631
7632 static int nl80211_add_scan_req(struct sk_buff *msg,
7633 struct cfg80211_registered_device *rdev)
7634 {
7635 struct cfg80211_scan_request *req = rdev->scan_req;
7636 struct nlattr *nest;
7637 int i;
7638
7639 ASSERT_RDEV_LOCK(rdev);
7640
7641 if (WARN_ON(!req))
7642 return 0;
7643
7644 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7645 if (!nest)
7646 goto nla_put_failure;
7647 for (i = 0; i < req->n_ssids; i++) {
7648 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7649 goto nla_put_failure;
7650 }
7651 nla_nest_end(msg, nest);
7652
7653 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7654 if (!nest)
7655 goto nla_put_failure;
7656 for (i = 0; i < req->n_channels; i++) {
7657 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7658 goto nla_put_failure;
7659 }
7660 nla_nest_end(msg, nest);
7661
7662 if (req->ie &&
7663 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7664 goto nla_put_failure;
7665
7666 return 0;
7667 nla_put_failure:
7668 return -ENOBUFS;
7669 }
7670
7671 static int nl80211_send_scan_msg(struct sk_buff *msg,
7672 struct cfg80211_registered_device *rdev,
7673 struct wireless_dev *wdev,
7674 u32 portid, u32 seq, int flags,
7675 u32 cmd)
7676 {
7677 void *hdr;
7678
7679 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7680 if (!hdr)
7681 return -1;
7682
7683 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7684 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7685 wdev->netdev->ifindex)) ||
7686 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7687 goto nla_put_failure;
7688
7689 /* ignore errors and send incomplete event anyway */
7690 nl80211_add_scan_req(msg, rdev);
7691
7692 return genlmsg_end(msg, hdr);
7693
7694 nla_put_failure:
7695 genlmsg_cancel(msg, hdr);
7696 return -EMSGSIZE;
7697 }
7698
7699 static int
7700 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7701 struct cfg80211_registered_device *rdev,
7702 struct net_device *netdev,
7703 u32 portid, u32 seq, int flags, u32 cmd)
7704 {
7705 void *hdr;
7706
7707 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7708 if (!hdr)
7709 return -1;
7710
7711 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7712 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7713 goto nla_put_failure;
7714
7715 return genlmsg_end(msg, hdr);
7716
7717 nla_put_failure:
7718 genlmsg_cancel(msg, hdr);
7719 return -EMSGSIZE;
7720 }
7721
7722 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7723 struct wireless_dev *wdev)
7724 {
7725 struct sk_buff *msg;
7726
7727 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7728 if (!msg)
7729 return;
7730
7731 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7732 NL80211_CMD_TRIGGER_SCAN) < 0) {
7733 nlmsg_free(msg);
7734 return;
7735 }
7736
7737 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7738 nl80211_scan_mcgrp.id, GFP_KERNEL);
7739 }
7740
7741 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7742 struct wireless_dev *wdev)
7743 {
7744 struct sk_buff *msg;
7745
7746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7747 if (!msg)
7748 return;
7749
7750 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7751 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7752 nlmsg_free(msg);
7753 return;
7754 }
7755
7756 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7757 nl80211_scan_mcgrp.id, GFP_KERNEL);
7758 }
7759
7760 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7761 struct wireless_dev *wdev)
7762 {
7763 struct sk_buff *msg;
7764
7765 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7766 if (!msg)
7767 return;
7768
7769 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7770 NL80211_CMD_SCAN_ABORTED) < 0) {
7771 nlmsg_free(msg);
7772 return;
7773 }
7774
7775 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7776 nl80211_scan_mcgrp.id, GFP_KERNEL);
7777 }
7778
7779 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7780 struct net_device *netdev)
7781 {
7782 struct sk_buff *msg;
7783
7784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7785 if (!msg)
7786 return;
7787
7788 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7789 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7790 nlmsg_free(msg);
7791 return;
7792 }
7793
7794 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7795 nl80211_scan_mcgrp.id, GFP_KERNEL);
7796 }
7797
7798 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7799 struct net_device *netdev, u32 cmd)
7800 {
7801 struct sk_buff *msg;
7802
7803 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7804 if (!msg)
7805 return;
7806
7807 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7808 nlmsg_free(msg);
7809 return;
7810 }
7811
7812 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7813 nl80211_scan_mcgrp.id, GFP_KERNEL);
7814 }
7815
7816 /*
7817 * This can happen on global regulatory changes or device specific settings
7818 * based on custom world regulatory domains.
7819 */
7820 void nl80211_send_reg_change_event(struct regulatory_request *request)
7821 {
7822 struct sk_buff *msg;
7823 void *hdr;
7824
7825 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7826 if (!msg)
7827 return;
7828
7829 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7830 if (!hdr) {
7831 nlmsg_free(msg);
7832 return;
7833 }
7834
7835 /* Userspace can always count this one always being set */
7836 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7837 goto nla_put_failure;
7838
7839 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7840 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7841 NL80211_REGDOM_TYPE_WORLD))
7842 goto nla_put_failure;
7843 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7844 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7845 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7846 goto nla_put_failure;
7847 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7848 request->intersect) {
7849 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7850 NL80211_REGDOM_TYPE_INTERSECTION))
7851 goto nla_put_failure;
7852 } else {
7853 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7854 NL80211_REGDOM_TYPE_COUNTRY) ||
7855 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7856 request->alpha2))
7857 goto nla_put_failure;
7858 }
7859
7860 if (wiphy_idx_valid(request->wiphy_idx) &&
7861 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7862 goto nla_put_failure;
7863
7864 genlmsg_end(msg, hdr);
7865
7866 rcu_read_lock();
7867 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7868 GFP_ATOMIC);
7869 rcu_read_unlock();
7870
7871 return;
7872
7873 nla_put_failure:
7874 genlmsg_cancel(msg, hdr);
7875 nlmsg_free(msg);
7876 }
7877
7878 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7879 struct net_device *netdev,
7880 const u8 *buf, size_t len,
7881 enum nl80211_commands cmd, gfp_t gfp)
7882 {
7883 struct sk_buff *msg;
7884 void *hdr;
7885
7886 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7887 if (!msg)
7888 return;
7889
7890 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7891 if (!hdr) {
7892 nlmsg_free(msg);
7893 return;
7894 }
7895
7896 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7897 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7898 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7899 goto nla_put_failure;
7900
7901 genlmsg_end(msg, hdr);
7902
7903 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7904 nl80211_mlme_mcgrp.id, gfp);
7905 return;
7906
7907 nla_put_failure:
7908 genlmsg_cancel(msg, hdr);
7909 nlmsg_free(msg);
7910 }
7911
7912 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7913 struct net_device *netdev, const u8 *buf,
7914 size_t len, gfp_t gfp)
7915 {
7916 nl80211_send_mlme_event(rdev, netdev, buf, len,
7917 NL80211_CMD_AUTHENTICATE, gfp);
7918 }
7919
7920 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7921 struct net_device *netdev, const u8 *buf,
7922 size_t len, gfp_t gfp)
7923 {
7924 nl80211_send_mlme_event(rdev, netdev, buf, len,
7925 NL80211_CMD_ASSOCIATE, gfp);
7926 }
7927
7928 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7929 struct net_device *netdev, const u8 *buf,
7930 size_t len, gfp_t gfp)
7931 {
7932 nl80211_send_mlme_event(rdev, netdev, buf, len,
7933 NL80211_CMD_DEAUTHENTICATE, gfp);
7934 }
7935
7936 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7937 struct net_device *netdev, const u8 *buf,
7938 size_t len, gfp_t gfp)
7939 {
7940 nl80211_send_mlme_event(rdev, netdev, buf, len,
7941 NL80211_CMD_DISASSOCIATE, gfp);
7942 }
7943
7944 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7945 struct net_device *netdev, const u8 *buf,
7946 size_t len, gfp_t gfp)
7947 {
7948 nl80211_send_mlme_event(rdev, netdev, buf, len,
7949 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7950 }
7951
7952 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7953 struct net_device *netdev, const u8 *buf,
7954 size_t len, gfp_t gfp)
7955 {
7956 nl80211_send_mlme_event(rdev, netdev, buf, len,
7957 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7958 }
7959
7960 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7961 struct net_device *netdev, int cmd,
7962 const u8 *addr, gfp_t gfp)
7963 {
7964 struct sk_buff *msg;
7965 void *hdr;
7966
7967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7968 if (!msg)
7969 return;
7970
7971 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7972 if (!hdr) {
7973 nlmsg_free(msg);
7974 return;
7975 }
7976
7977 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7978 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7979 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
7980 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
7981 goto nla_put_failure;
7982
7983 genlmsg_end(msg, hdr);
7984
7985 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7986 nl80211_mlme_mcgrp.id, gfp);
7987 return;
7988
7989 nla_put_failure:
7990 genlmsg_cancel(msg, hdr);
7991 nlmsg_free(msg);
7992 }
7993
7994 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7995 struct net_device *netdev, const u8 *addr,
7996 gfp_t gfp)
7997 {
7998 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7999 addr, gfp);
8000 }
8001
8002 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
8003 struct net_device *netdev, const u8 *addr,
8004 gfp_t gfp)
8005 {
8006 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
8007 addr, gfp);
8008 }
8009
8010 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
8011 struct net_device *netdev, const u8 *bssid,
8012 const u8 *req_ie, size_t req_ie_len,
8013 const u8 *resp_ie, size_t resp_ie_len,
8014 u16 status, gfp_t gfp)
8015 {
8016 struct sk_buff *msg;
8017 void *hdr;
8018
8019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8020 if (!msg)
8021 return;
8022
8023 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
8024 if (!hdr) {
8025 nlmsg_free(msg);
8026 return;
8027 }
8028
8029 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8030 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8031 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
8032 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
8033 (req_ie &&
8034 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8035 (resp_ie &&
8036 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8037 goto nla_put_failure;
8038
8039 genlmsg_end(msg, hdr);
8040
8041 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8042 nl80211_mlme_mcgrp.id, gfp);
8043 return;
8044
8045 nla_put_failure:
8046 genlmsg_cancel(msg, hdr);
8047 nlmsg_free(msg);
8048
8049 }
8050
8051 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8052 struct net_device *netdev, const u8 *bssid,
8053 const u8 *req_ie, size_t req_ie_len,
8054 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
8055 {
8056 struct sk_buff *msg;
8057 void *hdr;
8058
8059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8060 if (!msg)
8061 return;
8062
8063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
8064 if (!hdr) {
8065 nlmsg_free(msg);
8066 return;
8067 }
8068
8069 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8070 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8071 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
8072 (req_ie &&
8073 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8074 (resp_ie &&
8075 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8076 goto nla_put_failure;
8077
8078 genlmsg_end(msg, hdr);
8079
8080 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8081 nl80211_mlme_mcgrp.id, gfp);
8082 return;
8083
8084 nla_put_failure:
8085 genlmsg_cancel(msg, hdr);
8086 nlmsg_free(msg);
8087
8088 }
8089
8090 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8091 struct net_device *netdev, u16 reason,
8092 const u8 *ie, size_t ie_len, bool from_ap)
8093 {
8094 struct sk_buff *msg;
8095 void *hdr;
8096
8097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8098 if (!msg)
8099 return;
8100
8101 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8102 if (!hdr) {
8103 nlmsg_free(msg);
8104 return;
8105 }
8106
8107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8108 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8109 (from_ap && reason &&
8110 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8111 (from_ap &&
8112 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8113 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8114 goto nla_put_failure;
8115
8116 genlmsg_end(msg, hdr);
8117
8118 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8119 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8120 return;
8121
8122 nla_put_failure:
8123 genlmsg_cancel(msg, hdr);
8124 nlmsg_free(msg);
8125
8126 }
8127
8128 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8129 struct net_device *netdev, const u8 *bssid,
8130 gfp_t gfp)
8131 {
8132 struct sk_buff *msg;
8133 void *hdr;
8134
8135 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8136 if (!msg)
8137 return;
8138
8139 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8140 if (!hdr) {
8141 nlmsg_free(msg);
8142 return;
8143 }
8144
8145 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8146 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8147 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8148 goto nla_put_failure;
8149
8150 genlmsg_end(msg, hdr);
8151
8152 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8153 nl80211_mlme_mcgrp.id, gfp);
8154 return;
8155
8156 nla_put_failure:
8157 genlmsg_cancel(msg, hdr);
8158 nlmsg_free(msg);
8159 }
8160
8161 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8162 struct net_device *netdev,
8163 const u8 *macaddr, const u8* ie, u8 ie_len,
8164 gfp_t gfp)
8165 {
8166 struct sk_buff *msg;
8167 void *hdr;
8168
8169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8170 if (!msg)
8171 return;
8172
8173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8174 if (!hdr) {
8175 nlmsg_free(msg);
8176 return;
8177 }
8178
8179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8180 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8182 (ie_len && ie &&
8183 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8184 goto nla_put_failure;
8185
8186 genlmsg_end(msg, hdr);
8187
8188 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8189 nl80211_mlme_mcgrp.id, gfp);
8190 return;
8191
8192 nla_put_failure:
8193 genlmsg_cancel(msg, hdr);
8194 nlmsg_free(msg);
8195 }
8196
8197 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8198 struct net_device *netdev, const u8 *addr,
8199 enum nl80211_key_type key_type, int key_id,
8200 const u8 *tsc, gfp_t gfp)
8201 {
8202 struct sk_buff *msg;
8203 void *hdr;
8204
8205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8206 if (!msg)
8207 return;
8208
8209 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8210 if (!hdr) {
8211 nlmsg_free(msg);
8212 return;
8213 }
8214
8215 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8216 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8217 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8218 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8219 (key_id != -1 &&
8220 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8221 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8222 goto nla_put_failure;
8223
8224 genlmsg_end(msg, hdr);
8225
8226 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8227 nl80211_mlme_mcgrp.id, gfp);
8228 return;
8229
8230 nla_put_failure:
8231 genlmsg_cancel(msg, hdr);
8232 nlmsg_free(msg);
8233 }
8234
8235 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8236 struct ieee80211_channel *channel_before,
8237 struct ieee80211_channel *channel_after)
8238 {
8239 struct sk_buff *msg;
8240 void *hdr;
8241 struct nlattr *nl_freq;
8242
8243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8244 if (!msg)
8245 return;
8246
8247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8248 if (!hdr) {
8249 nlmsg_free(msg);
8250 return;
8251 }
8252
8253 /*
8254 * Since we are applying the beacon hint to a wiphy we know its
8255 * wiphy_idx is valid
8256 */
8257 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8258 goto nla_put_failure;
8259
8260 /* Before */
8261 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8262 if (!nl_freq)
8263 goto nla_put_failure;
8264 if (nl80211_msg_put_channel(msg, channel_before))
8265 goto nla_put_failure;
8266 nla_nest_end(msg, nl_freq);
8267
8268 /* After */
8269 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8270 if (!nl_freq)
8271 goto nla_put_failure;
8272 if (nl80211_msg_put_channel(msg, channel_after))
8273 goto nla_put_failure;
8274 nla_nest_end(msg, nl_freq);
8275
8276 genlmsg_end(msg, hdr);
8277
8278 rcu_read_lock();
8279 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8280 GFP_ATOMIC);
8281 rcu_read_unlock();
8282
8283 return;
8284
8285 nla_put_failure:
8286 genlmsg_cancel(msg, hdr);
8287 nlmsg_free(msg);
8288 }
8289
8290 static void nl80211_send_remain_on_chan_event(
8291 int cmd, struct cfg80211_registered_device *rdev,
8292 struct wireless_dev *wdev, u64 cookie,
8293 struct ieee80211_channel *chan,
8294 enum nl80211_channel_type channel_type,
8295 unsigned int duration, gfp_t gfp)
8296 {
8297 struct sk_buff *msg;
8298 void *hdr;
8299
8300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8301 if (!msg)
8302 return;
8303
8304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8305 if (!hdr) {
8306 nlmsg_free(msg);
8307 return;
8308 }
8309
8310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8311 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8312 wdev->netdev->ifindex)) ||
8313 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8314 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8315 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
8316 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8317 goto nla_put_failure;
8318
8319 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8320 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8321 goto nla_put_failure;
8322
8323 genlmsg_end(msg, hdr);
8324
8325 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8326 nl80211_mlme_mcgrp.id, gfp);
8327 return;
8328
8329 nla_put_failure:
8330 genlmsg_cancel(msg, hdr);
8331 nlmsg_free(msg);
8332 }
8333
8334 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8335 struct wireless_dev *wdev, u64 cookie,
8336 struct ieee80211_channel *chan,
8337 enum nl80211_channel_type channel_type,
8338 unsigned int duration, gfp_t gfp)
8339 {
8340 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8341 rdev, wdev, cookie, chan,
8342 channel_type, duration, gfp);
8343 }
8344
8345 void nl80211_send_remain_on_channel_cancel(
8346 struct cfg80211_registered_device *rdev,
8347 struct wireless_dev *wdev,
8348 u64 cookie, struct ieee80211_channel *chan,
8349 enum nl80211_channel_type channel_type, gfp_t gfp)
8350 {
8351 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8352 rdev, wdev, cookie, chan,
8353 channel_type, 0, gfp);
8354 }
8355
8356 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8357 struct net_device *dev, const u8 *mac_addr,
8358 struct station_info *sinfo, gfp_t gfp)
8359 {
8360 struct sk_buff *msg;
8361
8362 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8363 if (!msg)
8364 return;
8365
8366 if (nl80211_send_station(msg, 0, 0, 0,
8367 rdev, dev, mac_addr, sinfo) < 0) {
8368 nlmsg_free(msg);
8369 return;
8370 }
8371
8372 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8373 nl80211_mlme_mcgrp.id, gfp);
8374 }
8375
8376 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8377 struct net_device *dev, const u8 *mac_addr,
8378 gfp_t gfp)
8379 {
8380 struct sk_buff *msg;
8381 void *hdr;
8382
8383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8384 if (!msg)
8385 return;
8386
8387 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8388 if (!hdr) {
8389 nlmsg_free(msg);
8390 return;
8391 }
8392
8393 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8394 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8395 goto nla_put_failure;
8396
8397 genlmsg_end(msg, hdr);
8398
8399 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8400 nl80211_mlme_mcgrp.id, gfp);
8401 return;
8402
8403 nla_put_failure:
8404 genlmsg_cancel(msg, hdr);
8405 nlmsg_free(msg);
8406 }
8407
8408 void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
8409 struct net_device *dev, const u8 *mac_addr,
8410 enum nl80211_connect_failed_reason reason,
8411 gfp_t gfp)
8412 {
8413 struct sk_buff *msg;
8414 void *hdr;
8415
8416 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8417 if (!msg)
8418 return;
8419
8420 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
8421 if (!hdr) {
8422 nlmsg_free(msg);
8423 return;
8424 }
8425
8426 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8427 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
8428 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
8429 goto nla_put_failure;
8430
8431 genlmsg_end(msg, hdr);
8432
8433 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8434 nl80211_mlme_mcgrp.id, gfp);
8435 return;
8436
8437 nla_put_failure:
8438 genlmsg_cancel(msg, hdr);
8439 nlmsg_free(msg);
8440 }
8441
8442 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8443 const u8 *addr, gfp_t gfp)
8444 {
8445 struct wireless_dev *wdev = dev->ieee80211_ptr;
8446 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8447 struct sk_buff *msg;
8448 void *hdr;
8449 int err;
8450 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
8451
8452 if (!nlportid)
8453 return false;
8454
8455 msg = nlmsg_new(100, gfp);
8456 if (!msg)
8457 return true;
8458
8459 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8460 if (!hdr) {
8461 nlmsg_free(msg);
8462 return true;
8463 }
8464
8465 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8466 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8467 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8468 goto nla_put_failure;
8469
8470 err = genlmsg_end(msg, hdr);
8471 if (err < 0) {
8472 nlmsg_free(msg);
8473 return true;
8474 }
8475
8476 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8477 return true;
8478
8479 nla_put_failure:
8480 genlmsg_cancel(msg, hdr);
8481 nlmsg_free(msg);
8482 return true;
8483 }
8484
8485 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8486 {
8487 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8488 addr, gfp);
8489 }
8490
8491 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8492 const u8 *addr, gfp_t gfp)
8493 {
8494 return __nl80211_unexpected_frame(dev,
8495 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8496 addr, gfp);
8497 }
8498
8499 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8500 struct wireless_dev *wdev, u32 nlportid,
8501 int freq, int sig_dbm,
8502 const u8 *buf, size_t len, gfp_t gfp)
8503 {
8504 struct net_device *netdev = wdev->netdev;
8505 struct sk_buff *msg;
8506 void *hdr;
8507
8508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8509 if (!msg)
8510 return -ENOMEM;
8511
8512 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8513 if (!hdr) {
8514 nlmsg_free(msg);
8515 return -ENOMEM;
8516 }
8517
8518 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8519 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8520 netdev->ifindex)) ||
8521 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8522 (sig_dbm &&
8523 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8524 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8525 goto nla_put_failure;
8526
8527 genlmsg_end(msg, hdr);
8528
8529 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8530
8531 nla_put_failure:
8532 genlmsg_cancel(msg, hdr);
8533 nlmsg_free(msg);
8534 return -ENOBUFS;
8535 }
8536
8537 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8538 struct wireless_dev *wdev, u64 cookie,
8539 const u8 *buf, size_t len, bool ack,
8540 gfp_t gfp)
8541 {
8542 struct net_device *netdev = wdev->netdev;
8543 struct sk_buff *msg;
8544 void *hdr;
8545
8546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8547 if (!msg)
8548 return;
8549
8550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8551 if (!hdr) {
8552 nlmsg_free(msg);
8553 return;
8554 }
8555
8556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8557 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8558 netdev->ifindex)) ||
8559 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8560 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8561 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8562 goto nla_put_failure;
8563
8564 genlmsg_end(msg, hdr);
8565
8566 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8567 return;
8568
8569 nla_put_failure:
8570 genlmsg_cancel(msg, hdr);
8571 nlmsg_free(msg);
8572 }
8573
8574 void
8575 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8576 struct net_device *netdev,
8577 enum nl80211_cqm_rssi_threshold_event rssi_event,
8578 gfp_t gfp)
8579 {
8580 struct sk_buff *msg;
8581 struct nlattr *pinfoattr;
8582 void *hdr;
8583
8584 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8585 if (!msg)
8586 return;
8587
8588 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8589 if (!hdr) {
8590 nlmsg_free(msg);
8591 return;
8592 }
8593
8594 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8595 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8596 goto nla_put_failure;
8597
8598 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8599 if (!pinfoattr)
8600 goto nla_put_failure;
8601
8602 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8603 rssi_event))
8604 goto nla_put_failure;
8605
8606 nla_nest_end(msg, pinfoattr);
8607
8608 genlmsg_end(msg, hdr);
8609
8610 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8611 nl80211_mlme_mcgrp.id, gfp);
8612 return;
8613
8614 nla_put_failure:
8615 genlmsg_cancel(msg, hdr);
8616 nlmsg_free(msg);
8617 }
8618
8619 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8620 struct net_device *netdev, const u8 *bssid,
8621 const u8 *replay_ctr, gfp_t gfp)
8622 {
8623 struct sk_buff *msg;
8624 struct nlattr *rekey_attr;
8625 void *hdr;
8626
8627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8628 if (!msg)
8629 return;
8630
8631 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8632 if (!hdr) {
8633 nlmsg_free(msg);
8634 return;
8635 }
8636
8637 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8638 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8639 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8640 goto nla_put_failure;
8641
8642 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8643 if (!rekey_attr)
8644 goto nla_put_failure;
8645
8646 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8647 NL80211_REPLAY_CTR_LEN, replay_ctr))
8648 goto nla_put_failure;
8649
8650 nla_nest_end(msg, rekey_attr);
8651
8652 genlmsg_end(msg, hdr);
8653
8654 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8655 nl80211_mlme_mcgrp.id, gfp);
8656 return;
8657
8658 nla_put_failure:
8659 genlmsg_cancel(msg, hdr);
8660 nlmsg_free(msg);
8661 }
8662
8663 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8664 struct net_device *netdev, int index,
8665 const u8 *bssid, bool preauth, gfp_t gfp)
8666 {
8667 struct sk_buff *msg;
8668 struct nlattr *attr;
8669 void *hdr;
8670
8671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8672 if (!msg)
8673 return;
8674
8675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8676 if (!hdr) {
8677 nlmsg_free(msg);
8678 return;
8679 }
8680
8681 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8682 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8683 goto nla_put_failure;
8684
8685 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8686 if (!attr)
8687 goto nla_put_failure;
8688
8689 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8690 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8691 (preauth &&
8692 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8693 goto nla_put_failure;
8694
8695 nla_nest_end(msg, attr);
8696
8697 genlmsg_end(msg, hdr);
8698
8699 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8700 nl80211_mlme_mcgrp.id, gfp);
8701 return;
8702
8703 nla_put_failure:
8704 genlmsg_cancel(msg, hdr);
8705 nlmsg_free(msg);
8706 }
8707
8708 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8709 struct net_device *netdev, int freq,
8710 enum nl80211_channel_type type, gfp_t gfp)
8711 {
8712 struct sk_buff *msg;
8713 void *hdr;
8714
8715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8716 if (!msg)
8717 return;
8718
8719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8720 if (!hdr) {
8721 nlmsg_free(msg);
8722 return;
8723 }
8724
8725 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8726 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8727 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8728 goto nla_put_failure;
8729
8730 genlmsg_end(msg, hdr);
8731
8732 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8733 nl80211_mlme_mcgrp.id, gfp);
8734 return;
8735
8736 nla_put_failure:
8737 genlmsg_cancel(msg, hdr);
8738 nlmsg_free(msg);
8739 }
8740
8741 void
8742 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8743 struct net_device *netdev, const u8 *peer,
8744 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8745 {
8746 struct sk_buff *msg;
8747 struct nlattr *pinfoattr;
8748 void *hdr;
8749
8750 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8751 if (!msg)
8752 return;
8753
8754 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8755 if (!hdr) {
8756 nlmsg_free(msg);
8757 return;
8758 }
8759
8760 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8761 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8762 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8763 goto nla_put_failure;
8764
8765 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8766 if (!pinfoattr)
8767 goto nla_put_failure;
8768
8769 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8770 goto nla_put_failure;
8771
8772 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8773 goto nla_put_failure;
8774
8775 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8776 goto nla_put_failure;
8777
8778 nla_nest_end(msg, pinfoattr);
8779
8780 genlmsg_end(msg, hdr);
8781
8782 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8783 nl80211_mlme_mcgrp.id, gfp);
8784 return;
8785
8786 nla_put_failure:
8787 genlmsg_cancel(msg, hdr);
8788 nlmsg_free(msg);
8789 }
8790
8791 void
8792 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8793 struct net_device *netdev, const u8 *peer,
8794 u32 num_packets, gfp_t gfp)
8795 {
8796 struct sk_buff *msg;
8797 struct nlattr *pinfoattr;
8798 void *hdr;
8799
8800 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8801 if (!msg)
8802 return;
8803
8804 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8805 if (!hdr) {
8806 nlmsg_free(msg);
8807 return;
8808 }
8809
8810 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8811 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8812 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8813 goto nla_put_failure;
8814
8815 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8816 if (!pinfoattr)
8817 goto nla_put_failure;
8818
8819 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8820 goto nla_put_failure;
8821
8822 nla_nest_end(msg, pinfoattr);
8823
8824 genlmsg_end(msg, hdr);
8825
8826 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8827 nl80211_mlme_mcgrp.id, gfp);
8828 return;
8829
8830 nla_put_failure:
8831 genlmsg_cancel(msg, hdr);
8832 nlmsg_free(msg);
8833 }
8834
8835 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8836 u64 cookie, bool acked, gfp_t gfp)
8837 {
8838 struct wireless_dev *wdev = dev->ieee80211_ptr;
8839 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8840 struct sk_buff *msg;
8841 void *hdr;
8842 int err;
8843
8844 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8845 if (!msg)
8846 return;
8847
8848 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8849 if (!hdr) {
8850 nlmsg_free(msg);
8851 return;
8852 }
8853
8854 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8855 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8856 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8857 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8858 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8859 goto nla_put_failure;
8860
8861 err = genlmsg_end(msg, hdr);
8862 if (err < 0) {
8863 nlmsg_free(msg);
8864 return;
8865 }
8866
8867 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8868 nl80211_mlme_mcgrp.id, gfp);
8869 return;
8870
8871 nla_put_failure:
8872 genlmsg_cancel(msg, hdr);
8873 nlmsg_free(msg);
8874 }
8875 EXPORT_SYMBOL(cfg80211_probe_status);
8876
8877 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8878 const u8 *frame, size_t len,
8879 int freq, int sig_dbm, gfp_t gfp)
8880 {
8881 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8882 struct sk_buff *msg;
8883 void *hdr;
8884 u32 nlportid = ACCESS_ONCE(rdev->ap_beacons_nlportid);
8885
8886 if (!nlportid)
8887 return;
8888
8889 msg = nlmsg_new(len + 100, gfp);
8890 if (!msg)
8891 return;
8892
8893 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8894 if (!hdr) {
8895 nlmsg_free(msg);
8896 return;
8897 }
8898
8899 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8900 (freq &&
8901 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8902 (sig_dbm &&
8903 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8904 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8905 goto nla_put_failure;
8906
8907 genlmsg_end(msg, hdr);
8908
8909 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8910 return;
8911
8912 nla_put_failure:
8913 genlmsg_cancel(msg, hdr);
8914 nlmsg_free(msg);
8915 }
8916 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8917
8918 static int nl80211_netlink_notify(struct notifier_block * nb,
8919 unsigned long state,
8920 void *_notify)
8921 {
8922 struct netlink_notify *notify = _notify;
8923 struct cfg80211_registered_device *rdev;
8924 struct wireless_dev *wdev;
8925
8926 if (state != NETLINK_URELEASE)
8927 return NOTIFY_DONE;
8928
8929 rcu_read_lock();
8930
8931 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8932 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
8933 cfg80211_mlme_unregister_socket(wdev, notify->portid);
8934 if (rdev->ap_beacons_nlportid == notify->portid)
8935 rdev->ap_beacons_nlportid = 0;
8936 }
8937
8938 rcu_read_unlock();
8939
8940 return NOTIFY_DONE;
8941 }
8942
8943 static struct notifier_block nl80211_netlink_notifier = {
8944 .notifier_call = nl80211_netlink_notify,
8945 };
8946
8947 /* initialisation/exit functions */
8948
8949 int nl80211_init(void)
8950 {
8951 int err;
8952
8953 err = genl_register_family_with_ops(&nl80211_fam,
8954 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8955 if (err)
8956 return err;
8957
8958 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8959 if (err)
8960 goto err_out;
8961
8962 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8963 if (err)
8964 goto err_out;
8965
8966 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8967 if (err)
8968 goto err_out;
8969
8970 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8971 if (err)
8972 goto err_out;
8973
8974 #ifdef CONFIG_NL80211_TESTMODE
8975 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8976 if (err)
8977 goto err_out;
8978 #endif
8979
8980 err = netlink_register_notifier(&nl80211_netlink_notifier);
8981 if (err)
8982 goto err_out;
8983
8984 return 0;
8985 err_out:
8986 genl_unregister_family(&nl80211_fam);
8987 return err;
8988 }
8989
8990 void nl80211_exit(void)
8991 {
8992 netlink_unregister_notifier(&nl80211_netlink_notifier);
8993 genl_unregister_family(&nl80211_fam);
8994 }
Linux kernel - Deliverables
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