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Linux 3.8-rc7
[cris-mirror.git] / net / wireless / nl80211.c
blobf45706adaf3411813133704d41a12aa9d1d59712
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25 #include "rdev-ops.h"
26
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* returns ERR_PTR values */
50 static struct wireless_dev *
51 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
52 {
53 struct cfg80211_registered_device *rdev;
54 struct wireless_dev *result = NULL;
55 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
56 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
57 u64 wdev_id;
58 int wiphy_idx = -1;
59 int ifidx = -1;
60
61 assert_cfg80211_lock();
62
63 if (!have_ifidx && !have_wdev_id)
64 return ERR_PTR(-EINVAL);
65
66 if (have_ifidx)
67 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
68 if (have_wdev_id) {
69 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
70 wiphy_idx = wdev_id >> 32;
71 }
72
73 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
74 struct wireless_dev *wdev;
75
76 if (wiphy_net(&rdev->wiphy) != netns)
77 continue;
78
79 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
80 continue;
81
82 mutex_lock(&rdev->devlist_mtx);
83 list_for_each_entry(wdev, &rdev->wdev_list, list) {
84 if (have_ifidx && wdev->netdev &&
85 wdev->netdev->ifindex == ifidx) {
86 result = wdev;
87 break;
88 }
89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
90 result = wdev;
91 break;
92 }
93 }
94 mutex_unlock(&rdev->devlist_mtx);
95
96 if (result)
97 break;
98 }
99
100 if (result)
101 return result;
102 return ERR_PTR(-ENODEV);
103 }
104
105 static struct cfg80211_registered_device *
106 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
107 {
108 struct cfg80211_registered_device *rdev = NULL, *tmp;
109 struct net_device *netdev;
110
111 assert_cfg80211_lock();
112
113 if (!attrs[NL80211_ATTR_WIPHY] &&
114 !attrs[NL80211_ATTR_IFINDEX] &&
115 !attrs[NL80211_ATTR_WDEV])
116 return ERR_PTR(-EINVAL);
117
118 if (attrs[NL80211_ATTR_WIPHY])
119 rdev = cfg80211_rdev_by_wiphy_idx(
120 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
121
122 if (attrs[NL80211_ATTR_WDEV]) {
123 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
124 struct wireless_dev *wdev;
125 bool found = false;
126
127 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
128 if (tmp) {
129 /* make sure wdev exists */
130 mutex_lock(&tmp->devlist_mtx);
131 list_for_each_entry(wdev, &tmp->wdev_list, list) {
132 if (wdev->identifier != (u32)wdev_id)
133 continue;
134 found = true;
135 break;
136 }
137 mutex_unlock(&tmp->devlist_mtx);
138
139 if (!found)
140 tmp = NULL;
141
142 if (rdev && tmp != rdev)
143 return ERR_PTR(-EINVAL);
144 rdev = tmp;
145 }
146 }
147
148 if (attrs[NL80211_ATTR_IFINDEX]) {
149 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
150 netdev = dev_get_by_index(netns, ifindex);
151 if (netdev) {
152 if (netdev->ieee80211_ptr)
153 tmp = wiphy_to_dev(
154 netdev->ieee80211_ptr->wiphy);
155 else
156 tmp = NULL;
157
158 dev_put(netdev);
159
160 /* not wireless device -- return error */
161 if (!tmp)
162 return ERR_PTR(-EINVAL);
163
164 /* mismatch -- return error */
165 if (rdev && tmp != rdev)
166 return ERR_PTR(-EINVAL);
167
168 rdev = tmp;
169 }
170 }
171
172 if (!rdev)
173 return ERR_PTR(-ENODEV);
174
175 if (netns != wiphy_net(&rdev->wiphy))
176 return ERR_PTR(-ENODEV);
177
178 return rdev;
179 }
180
181 /*
182 * This function returns a pointer to the driver
183 * that the genl_info item that is passed refers to.
184 * If successful, it returns non-NULL and also locks
185 * the driver's mutex!
186 *
187 * This means that you need to call cfg80211_unlock_rdev()
188 * before being allowed to acquire &cfg80211_mutex!
189 *
190 * This is necessary because we need to lock the global
191 * mutex to get an item off the list safely, and then
192 * we lock the rdev mutex so it doesn't go away under us.
193 *
194 * We don't want to keep cfg80211_mutex locked
195 * for all the time in order to allow requests on
196 * other interfaces to go through at the same time.
197 *
198 * The result of this can be a PTR_ERR and hence must
199 * be checked with IS_ERR() for errors.
200 */
201 static struct cfg80211_registered_device *
202 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
203 {
204 struct cfg80211_registered_device *rdev;
205
206 mutex_lock(&cfg80211_mutex);
207 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
208
209 /* if it is not an error we grab the lock on
210 * it to assure it won't be going away while
211 * we operate on it */
212 if (!IS_ERR(rdev))
213 mutex_lock(&rdev->mtx);
214
215 mutex_unlock(&cfg80211_mutex);
216
217 return rdev;
218 }
219
220 /* policy for the attributes */
221 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
222 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
223 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
224 .len = 20-1 },
225 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
226
227 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
229 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
230 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
231 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
232
233 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
234 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
235 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
236 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
237 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
238
239 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
240 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
241 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
242
243 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
244 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
245
246 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
247 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
248 .len = WLAN_MAX_KEY_LEN },
249 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
250 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
251 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
252 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
253 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
254
255 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
256 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
257 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
258 .len = IEEE80211_MAX_DATA_LEN },
259 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_DATA_LEN },
261 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
262 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
263 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
264 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
265 .len = NL80211_MAX_SUPP_RATES },
266 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
267 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
268 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
269 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
270 .len = IEEE80211_MAX_MESH_ID_LEN },
271 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
272
273 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
274 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
275
276 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
277 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
278 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
279 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
280 .len = NL80211_MAX_SUPP_RATES },
281 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
282
283 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
285
286 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
287
288 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
289 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
290 .len = IEEE80211_MAX_DATA_LEN },
291 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
292 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
293
294 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
295 .len = IEEE80211_MAX_SSID_LEN },
296 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
297 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
298 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
299 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
301 [NL80211_ATTR_STA_FLAGS2] = {
302 .len = sizeof(struct nl80211_sta_flag_update),
303 },
304 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
305 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
306 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
307 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
308 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
309 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
310 [NL80211_ATTR_PID] = { .type = NLA_U32 },
311 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
312 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
313 .len = WLAN_PMKID_LEN },
314 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
315 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
316 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
317 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
318 .len = IEEE80211_MAX_DATA_LEN },
319 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
320 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
321 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
322 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
323 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
325 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
326 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
327 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
328 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
329 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
330 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
331 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
332 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
333 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
334 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
335 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
336 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
337 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
338 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
339 .len = IEEE80211_MAX_DATA_LEN },
340 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
341 .len = IEEE80211_MAX_DATA_LEN },
342 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
344 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
345 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
346 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
347 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
348 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
350 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
351 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
352 .len = IEEE80211_MAX_DATA_LEN },
353 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
354 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
355 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
356 .len = NL80211_HT_CAPABILITY_LEN
357 },
358 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
359 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
360 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
361 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
362 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
363 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
364 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
365 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
366 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
367 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
368 };
369
370 /* policy for the key attributes */
371 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
372 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
373 [NL80211_KEY_IDX] = { .type = NLA_U8 },
374 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
375 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
376 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
377 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
378 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
379 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
380 };
381
382 /* policy for the key default flags */
383 static const struct nla_policy
384 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
385 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
386 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
387 };
388
389 /* policy for WoWLAN attributes */
390 static const struct nla_policy
391 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
392 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
393 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
394 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
395 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
396 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
397 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
398 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
399 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
400 };
401
402 /* policy for GTK rekey offload attributes */
403 static const struct nla_policy
404 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
405 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
406 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
407 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
408 };
409
410 static const struct nla_policy
411 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
412 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
413 .len = IEEE80211_MAX_SSID_LEN },
414 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
415 };
416
417 /* ifidx get helper */
418 static int nl80211_get_ifidx(struct netlink_callback *cb)
419 {
420 int res;
421
422 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
423 nl80211_fam.attrbuf, nl80211_fam.maxattr,
424 nl80211_policy);
425 if (res)
426 return res;
427
428 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
429 return -EINVAL;
430
431 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
432 if (!res)
433 return -EINVAL;
434 return res;
435 }
436
437 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
438 struct netlink_callback *cb,
439 struct cfg80211_registered_device **rdev,
440 struct net_device **dev)
441 {
442 int ifidx = cb->args[0];
443 int err;
444
445 if (!ifidx)
446 ifidx = nl80211_get_ifidx(cb);
447 if (ifidx < 0)
448 return ifidx;
449
450 cb->args[0] = ifidx;
451
452 rtnl_lock();
453
454 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
455 if (!*dev) {
456 err = -ENODEV;
457 goto out_rtnl;
458 }
459
460 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
461 if (IS_ERR(*rdev)) {
462 err = PTR_ERR(*rdev);
463 goto out_rtnl;
464 }
465
466 return 0;
467 out_rtnl:
468 rtnl_unlock();
469 return err;
470 }
471
472 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
473 {
474 cfg80211_unlock_rdev(rdev);
475 rtnl_unlock();
476 }
477
478 /* IE validation */
479 static bool is_valid_ie_attr(const struct nlattr *attr)
480 {
481 const u8 *pos;
482 int len;
483
484 if (!attr)
485 return true;
486
487 pos = nla_data(attr);
488 len = nla_len(attr);
489
490 while (len) {
491 u8 elemlen;
492
493 if (len < 2)
494 return false;
495 len -= 2;
496
497 elemlen = pos[1];
498 if (elemlen > len)
499 return false;
500
501 len -= elemlen;
502 pos += 2 + elemlen;
503 }
504
505 return true;
506 }
507
508 /* message building helper */
509 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
510 int flags, u8 cmd)
511 {
512 /* since there is no private header just add the generic one */
513 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
514 }
515
516 static int nl80211_msg_put_channel(struct sk_buff *msg,
517 struct ieee80211_channel *chan)
518 {
519 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
520 chan->center_freq))
521 goto nla_put_failure;
522
523 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
524 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
525 goto nla_put_failure;
526 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
527 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
528 goto nla_put_failure;
529 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
530 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
531 goto nla_put_failure;
532 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
533 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
534 goto nla_put_failure;
535
536 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
537 DBM_TO_MBM(chan->max_power)))
538 goto nla_put_failure;
539
540 return 0;
541
542 nla_put_failure:
543 return -ENOBUFS;
544 }
545
546 /* netlink command implementations */
547
548 struct key_parse {
549 struct key_params p;
550 int idx;
551 int type;
552 bool def, defmgmt;
553 bool def_uni, def_multi;
554 };
555
556 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
557 {
558 struct nlattr *tb[NL80211_KEY_MAX + 1];
559 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
560 nl80211_key_policy);
561 if (err)
562 return err;
563
564 k->def = !!tb[NL80211_KEY_DEFAULT];
565 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
566
567 if (k->def) {
568 k->def_uni = true;
569 k->def_multi = true;
570 }
571 if (k->defmgmt)
572 k->def_multi = true;
573
574 if (tb[NL80211_KEY_IDX])
575 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
576
577 if (tb[NL80211_KEY_DATA]) {
578 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
579 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
580 }
581
582 if (tb[NL80211_KEY_SEQ]) {
583 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
584 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
585 }
586
587 if (tb[NL80211_KEY_CIPHER])
588 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
589
590 if (tb[NL80211_KEY_TYPE]) {
591 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
592 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
593 return -EINVAL;
594 }
595
596 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
597 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
598 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
599 tb[NL80211_KEY_DEFAULT_TYPES],
600 nl80211_key_default_policy);
601 if (err)
602 return err;
603
604 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
605 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
606 }
607
608 return 0;
609 }
610
611 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
612 {
613 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
614 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
615 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
616 }
617
618 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
619 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
620 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
621 }
622
623 if (info->attrs[NL80211_ATTR_KEY_IDX])
624 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
625
626 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
627 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
628
629 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
630 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
631
632 if (k->def) {
633 k->def_uni = true;
634 k->def_multi = true;
635 }
636 if (k->defmgmt)
637 k->def_multi = true;
638
639 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
640 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
641 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
642 return -EINVAL;
643 }
644
645 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
646 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
647 int err = nla_parse_nested(
648 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
649 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
650 nl80211_key_default_policy);
651 if (err)
652 return err;
653
654 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
655 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
656 }
657
658 return 0;
659 }
660
661 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
662 {
663 int err;
664
665 memset(k, 0, sizeof(*k));
666 k->idx = -1;
667 k->type = -1;
668
669 if (info->attrs[NL80211_ATTR_KEY])
670 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
671 else
672 err = nl80211_parse_key_old(info, k);
673
674 if (err)
675 return err;
676
677 if (k->def && k->defmgmt)
678 return -EINVAL;
679
680 if (k->defmgmt) {
681 if (k->def_uni || !k->def_multi)
682 return -EINVAL;
683 }
684
685 if (k->idx != -1) {
686 if (k->defmgmt) {
687 if (k->idx < 4 || k->idx > 5)
688 return -EINVAL;
689 } else if (k->def) {
690 if (k->idx < 0 || k->idx > 3)
691 return -EINVAL;
692 } else {
693 if (k->idx < 0 || k->idx > 5)
694 return -EINVAL;
695 }
696 }
697
698 return 0;
699 }
700
701 static struct cfg80211_cached_keys *
702 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
703 struct nlattr *keys, bool *no_ht)
704 {
705 struct key_parse parse;
706 struct nlattr *key;
707 struct cfg80211_cached_keys *result;
708 int rem, err, def = 0;
709
710 result = kzalloc(sizeof(*result), GFP_KERNEL);
711 if (!result)
712 return ERR_PTR(-ENOMEM);
713
714 result->def = -1;
715 result->defmgmt = -1;
716
717 nla_for_each_nested(key, keys, rem) {
718 memset(&parse, 0, sizeof(parse));
719 parse.idx = -1;
720
721 err = nl80211_parse_key_new(key, &parse);
722 if (err)
723 goto error;
724 err = -EINVAL;
725 if (!parse.p.key)
726 goto error;
727 if (parse.idx < 0 || parse.idx > 4)
728 goto error;
729 if (parse.def) {
730 if (def)
731 goto error;
732 def = 1;
733 result->def = parse.idx;
734 if (!parse.def_uni || !parse.def_multi)
735 goto error;
736 } else if (parse.defmgmt)
737 goto error;
738 err = cfg80211_validate_key_settings(rdev, &parse.p,
739 parse.idx, false, NULL);
740 if (err)
741 goto error;
742 result->params[parse.idx].cipher = parse.p.cipher;
743 result->params[parse.idx].key_len = parse.p.key_len;
744 result->params[parse.idx].key = result->data[parse.idx];
745 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
746
747 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
748 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
749 if (no_ht)
750 *no_ht = true;
751 }
752 }
753
754 return result;
755 error:
756 kfree(result);
757 return ERR_PTR(err);
758 }
759
760 static int nl80211_key_allowed(struct wireless_dev *wdev)
761 {
762 ASSERT_WDEV_LOCK(wdev);
763
764 switch (wdev->iftype) {
765 case NL80211_IFTYPE_AP:
766 case NL80211_IFTYPE_AP_VLAN:
767 case NL80211_IFTYPE_P2P_GO:
768 case NL80211_IFTYPE_MESH_POINT:
769 break;
770 case NL80211_IFTYPE_ADHOC:
771 if (!wdev->current_bss)
772 return -ENOLINK;
773 break;
774 case NL80211_IFTYPE_STATION:
775 case NL80211_IFTYPE_P2P_CLIENT:
776 if (wdev->sme_state != CFG80211_SME_CONNECTED)
777 return -ENOLINK;
778 break;
779 default:
780 return -EINVAL;
781 }
782
783 return 0;
784 }
785
786 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
787 {
788 struct nlattr *nl_modes = nla_nest_start(msg, attr);
789 int i;
790
791 if (!nl_modes)
792 goto nla_put_failure;
793
794 i = 0;
795 while (ifmodes) {
796 if ((ifmodes & 1) && nla_put_flag(msg, i))
797 goto nla_put_failure;
798 ifmodes >>= 1;
799 i++;
800 }
801
802 nla_nest_end(msg, nl_modes);
803 return 0;
804
805 nla_put_failure:
806 return -ENOBUFS;
807 }
808
809 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
810 struct sk_buff *msg)
811 {
812 struct nlattr *nl_combis;
813 int i, j;
814
815 nl_combis = nla_nest_start(msg,
816 NL80211_ATTR_INTERFACE_COMBINATIONS);
817 if (!nl_combis)
818 goto nla_put_failure;
819
820 for (i = 0; i < wiphy->n_iface_combinations; i++) {
821 const struct ieee80211_iface_combination *c;
822 struct nlattr *nl_combi, *nl_limits;
823
824 c = &wiphy->iface_combinations[i];
825
826 nl_combi = nla_nest_start(msg, i + 1);
827 if (!nl_combi)
828 goto nla_put_failure;
829
830 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
831 if (!nl_limits)
832 goto nla_put_failure;
833
834 for (j = 0; j < c->n_limits; j++) {
835 struct nlattr *nl_limit;
836
837 nl_limit = nla_nest_start(msg, j + 1);
838 if (!nl_limit)
839 goto nla_put_failure;
840 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
841 c->limits[j].max))
842 goto nla_put_failure;
843 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
844 c->limits[j].types))
845 goto nla_put_failure;
846 nla_nest_end(msg, nl_limit);
847 }
848
849 nla_nest_end(msg, nl_limits);
850
851 if (c->beacon_int_infra_match &&
852 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
853 goto nla_put_failure;
854 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
855 c->num_different_channels) ||
856 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
857 c->max_interfaces))
858 goto nla_put_failure;
859
860 nla_nest_end(msg, nl_combi);
861 }
862
863 nla_nest_end(msg, nl_combis);
864
865 return 0;
866 nla_put_failure:
867 return -ENOBUFS;
868 }
869
870 static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
871 struct cfg80211_registered_device *dev)
872 {
873 void *hdr;
874 struct nlattr *nl_bands, *nl_band;
875 struct nlattr *nl_freqs, *nl_freq;
876 struct nlattr *nl_rates, *nl_rate;
877 struct nlattr *nl_cmds;
878 enum ieee80211_band band;
879 struct ieee80211_channel *chan;
880 struct ieee80211_rate *rate;
881 int i;
882 const struct ieee80211_txrx_stypes *mgmt_stypes =
883 dev->wiphy.mgmt_stypes;
884
885 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
886 if (!hdr)
887 return -1;
888
889 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
890 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
891 nla_put_u32(msg, NL80211_ATTR_GENERATION,
892 cfg80211_rdev_list_generation) ||
893 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
894 dev->wiphy.retry_short) ||
895 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
896 dev->wiphy.retry_long) ||
897 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
898 dev->wiphy.frag_threshold) ||
899 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
900 dev->wiphy.rts_threshold) ||
901 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
902 dev->wiphy.coverage_class) ||
903 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
904 dev->wiphy.max_scan_ssids) ||
905 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
906 dev->wiphy.max_sched_scan_ssids) ||
907 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
908 dev->wiphy.max_scan_ie_len) ||
909 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
910 dev->wiphy.max_sched_scan_ie_len) ||
911 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
912 dev->wiphy.max_match_sets))
913 goto nla_put_failure;
914
915 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
916 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
917 goto nla_put_failure;
918 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
919 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
920 goto nla_put_failure;
921 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
922 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
923 goto nla_put_failure;
924 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
925 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
926 goto nla_put_failure;
927 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
928 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
929 goto nla_put_failure;
930 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
931 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
932 goto nla_put_failure;
933
934 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
935 sizeof(u32) * dev->wiphy.n_cipher_suites,
936 dev->wiphy.cipher_suites))
937 goto nla_put_failure;
938
939 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
940 dev->wiphy.max_num_pmkids))
941 goto nla_put_failure;
942
943 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
944 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
945 goto nla_put_failure;
946
947 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
948 dev->wiphy.available_antennas_tx) ||
949 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
950 dev->wiphy.available_antennas_rx))
951 goto nla_put_failure;
952
953 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
954 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
955 dev->wiphy.probe_resp_offload))
956 goto nla_put_failure;
957
958 if ((dev->wiphy.available_antennas_tx ||
959 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
960 u32 tx_ant = 0, rx_ant = 0;
961 int res;
962 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
963 if (!res) {
964 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
965 tx_ant) ||
966 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
967 rx_ant))
968 goto nla_put_failure;
969 }
970 }
971
972 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
973 dev->wiphy.interface_modes))
974 goto nla_put_failure;
975
976 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
977 if (!nl_bands)
978 goto nla_put_failure;
979
980 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
981 if (!dev->wiphy.bands[band])
982 continue;
983
984 nl_band = nla_nest_start(msg, band);
985 if (!nl_band)
986 goto nla_put_failure;
987
988 /* add HT info */
989 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
990 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
991 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
992 &dev->wiphy.bands[band]->ht_cap.mcs) ||
993 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
994 dev->wiphy.bands[band]->ht_cap.cap) ||
995 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
996 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
997 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
998 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
999 goto nla_put_failure;
1000
1001 /* add VHT info */
1002 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
1003 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1004 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
1005 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
1006 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1007 dev->wiphy.bands[band]->vht_cap.cap)))
1008 goto nla_put_failure;
1009
1010 /* add frequencies */
1011 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
1012 if (!nl_freqs)
1013 goto nla_put_failure;
1014
1015 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1016 nl_freq = nla_nest_start(msg, i);
1017 if (!nl_freq)
1018 goto nla_put_failure;
1019
1020 chan = &dev->wiphy.bands[band]->channels[i];
1021
1022 if (nl80211_msg_put_channel(msg, chan))
1023 goto nla_put_failure;
1024
1025 nla_nest_end(msg, nl_freq);
1026 }
1027
1028 nla_nest_end(msg, nl_freqs);
1029
1030 /* add bitrates */
1031 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1032 if (!nl_rates)
1033 goto nla_put_failure;
1034
1035 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1036 nl_rate = nla_nest_start(msg, i);
1037 if (!nl_rate)
1038 goto nla_put_failure;
1039
1040 rate = &dev->wiphy.bands[band]->bitrates[i];
1041 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1042 rate->bitrate))
1043 goto nla_put_failure;
1044 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1045 nla_put_flag(msg,
1046 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1047 goto nla_put_failure;
1048
1049 nla_nest_end(msg, nl_rate);
1050 }
1051
1052 nla_nest_end(msg, nl_rates);
1053
1054 nla_nest_end(msg, nl_band);
1055 }
1056 nla_nest_end(msg, nl_bands);
1057
1058 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1059 if (!nl_cmds)
1060 goto nla_put_failure;
1061
1062 i = 0;
1063 #define CMD(op, n) \
1064 do { \
1065 if (dev->ops->op) { \
1066 i++; \
1067 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1068 goto nla_put_failure; \
1069 } \
1070 } while (0)
1071
1072 CMD(add_virtual_intf, NEW_INTERFACE);
1073 CMD(change_virtual_intf, SET_INTERFACE);
1074 CMD(add_key, NEW_KEY);
1075 CMD(start_ap, START_AP);
1076 CMD(add_station, NEW_STATION);
1077 CMD(add_mpath, NEW_MPATH);
1078 CMD(update_mesh_config, SET_MESH_CONFIG);
1079 CMD(change_bss, SET_BSS);
1080 CMD(auth, AUTHENTICATE);
1081 CMD(assoc, ASSOCIATE);
1082 CMD(deauth, DEAUTHENTICATE);
1083 CMD(disassoc, DISASSOCIATE);
1084 CMD(join_ibss, JOIN_IBSS);
1085 CMD(join_mesh, JOIN_MESH);
1086 CMD(set_pmksa, SET_PMKSA);
1087 CMD(del_pmksa, DEL_PMKSA);
1088 CMD(flush_pmksa, FLUSH_PMKSA);
1089 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1090 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1091 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1092 CMD(mgmt_tx, FRAME);
1093 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1094 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1095 i++;
1096 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1097 goto nla_put_failure;
1098 }
1099 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1100 dev->ops->join_mesh) {
1101 i++;
1102 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1103 goto nla_put_failure;
1104 }
1105 CMD(set_wds_peer, SET_WDS_PEER);
1106 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1107 CMD(tdls_mgmt, TDLS_MGMT);
1108 CMD(tdls_oper, TDLS_OPER);
1109 }
1110 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1111 CMD(sched_scan_start, START_SCHED_SCAN);
1112 CMD(probe_client, PROBE_CLIENT);
1113 CMD(set_noack_map, SET_NOACK_MAP);
1114 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1115 i++;
1116 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1117 goto nla_put_failure;
1118 }
1119 CMD(start_p2p_device, START_P2P_DEVICE);
1120 CMD(set_mcast_rate, SET_MCAST_RATE);
1121
1122 #ifdef CONFIG_NL80211_TESTMODE
1123 CMD(testmode_cmd, TESTMODE);
1124 #endif
1125
1126 #undef CMD
1127
1128 if (dev->ops->connect || dev->ops->auth) {
1129 i++;
1130 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1131 goto nla_put_failure;
1132 }
1133
1134 if (dev->ops->disconnect || dev->ops->deauth) {
1135 i++;
1136 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1137 goto nla_put_failure;
1138 }
1139
1140 nla_nest_end(msg, nl_cmds);
1141
1142 if (dev->ops->remain_on_channel &&
1143 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1144 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1145 dev->wiphy.max_remain_on_channel_duration))
1146 goto nla_put_failure;
1147
1148 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1149 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1150 goto nla_put_failure;
1151
1152 if (mgmt_stypes) {
1153 u16 stypes;
1154 struct nlattr *nl_ftypes, *nl_ifs;
1155 enum nl80211_iftype ift;
1156
1157 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1158 if (!nl_ifs)
1159 goto nla_put_failure;
1160
1161 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1162 nl_ftypes = nla_nest_start(msg, ift);
1163 if (!nl_ftypes)
1164 goto nla_put_failure;
1165 i = 0;
1166 stypes = mgmt_stypes[ift].tx;
1167 while (stypes) {
1168 if ((stypes & 1) &&
1169 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1170 (i << 4) | IEEE80211_FTYPE_MGMT))
1171 goto nla_put_failure;
1172 stypes >>= 1;
1173 i++;
1174 }
1175 nla_nest_end(msg, nl_ftypes);
1176 }
1177
1178 nla_nest_end(msg, nl_ifs);
1179
1180 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1181 if (!nl_ifs)
1182 goto nla_put_failure;
1183
1184 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1185 nl_ftypes = nla_nest_start(msg, ift);
1186 if (!nl_ftypes)
1187 goto nla_put_failure;
1188 i = 0;
1189 stypes = mgmt_stypes[ift].rx;
1190 while (stypes) {
1191 if ((stypes & 1) &&
1192 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1193 (i << 4) | IEEE80211_FTYPE_MGMT))
1194 goto nla_put_failure;
1195 stypes >>= 1;
1196 i++;
1197 }
1198 nla_nest_end(msg, nl_ftypes);
1199 }
1200 nla_nest_end(msg, nl_ifs);
1201 }
1202
1203 #ifdef CONFIG_PM
1204 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1205 struct nlattr *nl_wowlan;
1206
1207 nl_wowlan = nla_nest_start(msg,
1208 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1209 if (!nl_wowlan)
1210 goto nla_put_failure;
1211
1212 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1213 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1214 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1215 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1216 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1217 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1218 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1219 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1220 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1221 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1222 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1223 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1224 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1225 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1226 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1227 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1228 goto nla_put_failure;
1229 if (dev->wiphy.wowlan.n_patterns) {
1230 struct nl80211_wowlan_pattern_support pat = {
1231 .max_patterns = dev->wiphy.wowlan.n_patterns,
1232 .min_pattern_len =
1233 dev->wiphy.wowlan.pattern_min_len,
1234 .max_pattern_len =
1235 dev->wiphy.wowlan.pattern_max_len,
1236 };
1237 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1238 sizeof(pat), &pat))
1239 goto nla_put_failure;
1240 }
1241
1242 nla_nest_end(msg, nl_wowlan);
1243 }
1244 #endif
1245
1246 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1247 dev->wiphy.software_iftypes))
1248 goto nla_put_failure;
1249
1250 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1251 goto nla_put_failure;
1252
1253 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1254 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1255 dev->wiphy.ap_sme_capa))
1256 goto nla_put_failure;
1257
1258 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1259 dev->wiphy.features))
1260 goto nla_put_failure;
1261
1262 if (dev->wiphy.ht_capa_mod_mask &&
1263 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1264 sizeof(*dev->wiphy.ht_capa_mod_mask),
1265 dev->wiphy.ht_capa_mod_mask))
1266 goto nla_put_failure;
1267
1268 return genlmsg_end(msg, hdr);
1269
1270 nla_put_failure:
1271 genlmsg_cancel(msg, hdr);
1272 return -EMSGSIZE;
1273 }
1274
1275 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1276 {
1277 int idx = 0;
1278 int start = cb->args[0];
1279 struct cfg80211_registered_device *dev;
1280
1281 mutex_lock(&cfg80211_mutex);
1282 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1283 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1284 continue;
1285 if (++idx <= start)
1286 continue;
1287 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
1288 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1289 dev) < 0) {
1290 idx--;
1291 break;
1292 }
1293 }
1294 mutex_unlock(&cfg80211_mutex);
1295
1296 cb->args[0] = idx;
1297
1298 return skb->len;
1299 }
1300
1301 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1302 {
1303 struct sk_buff *msg;
1304 struct cfg80211_registered_device *dev = info->user_ptr[0];
1305
1306 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1307 if (!msg)
1308 return -ENOMEM;
1309
1310 if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 0) {
1311 nlmsg_free(msg);
1312 return -ENOBUFS;
1313 }
1314
1315 return genlmsg_reply(msg, info);
1316 }
1317
1318 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1319 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1320 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1321 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1322 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1323 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1324 };
1325
1326 static int parse_txq_params(struct nlattr *tb[],
1327 struct ieee80211_txq_params *txq_params)
1328 {
1329 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1330 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1331 !tb[NL80211_TXQ_ATTR_AIFS])
1332 return -EINVAL;
1333
1334 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1335 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1336 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1337 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1338 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1339
1340 if (txq_params->ac >= NL80211_NUM_ACS)
1341 return -EINVAL;
1342
1343 return 0;
1344 }
1345
1346 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1347 {
1348 /*
1349 * You can only set the channel explicitly for WDS interfaces,
1350 * all others have their channel managed via their respective
1351 * "establish a connection" command (connect, join, ...)
1352 *
1353 * For AP/GO and mesh mode, the channel can be set with the
1354 * channel userspace API, but is only stored and passed to the
1355 * low-level driver when the AP starts or the mesh is joined.
1356 * This is for backward compatibility, userspace can also give
1357 * the channel in the start-ap or join-mesh commands instead.
1358 *
1359 * Monitors are special as they are normally slaved to
1360 * whatever else is going on, so they have their own special
1361 * operation to set the monitor channel if possible.
1362 */
1363 return !wdev ||
1364 wdev->iftype == NL80211_IFTYPE_AP ||
1365 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1366 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1367 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1368 }
1369
1370 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1371 struct genl_info *info,
1372 struct cfg80211_chan_def *chandef)
1373 {
1374 u32 control_freq;
1375
1376 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1377 return -EINVAL;
1378
1379 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1380
1381 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1382 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1383 chandef->center_freq1 = control_freq;
1384 chandef->center_freq2 = 0;
1385
1386 /* Primary channel not allowed */
1387 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1388 return -EINVAL;
1389
1390 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1391 enum nl80211_channel_type chantype;
1392
1393 chantype = nla_get_u32(
1394 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1395
1396 switch (chantype) {
1397 case NL80211_CHAN_NO_HT:
1398 case NL80211_CHAN_HT20:
1399 case NL80211_CHAN_HT40PLUS:
1400 case NL80211_CHAN_HT40MINUS:
1401 cfg80211_chandef_create(chandef, chandef->chan,
1402 chantype);
1403 break;
1404 default:
1405 return -EINVAL;
1406 }
1407 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1408 chandef->width =
1409 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1410 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1411 chandef->center_freq1 =
1412 nla_get_u32(
1413 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1414 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1415 chandef->center_freq2 =
1416 nla_get_u32(
1417 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1418 }
1419
1420 if (!cfg80211_chandef_valid(chandef))
1421 return -EINVAL;
1422
1423 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1424 IEEE80211_CHAN_DISABLED))
1425 return -EINVAL;
1426
1427 return 0;
1428 }
1429
1430 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1431 struct wireless_dev *wdev,
1432 struct genl_info *info)
1433 {
1434 struct cfg80211_chan_def chandef;
1435 int result;
1436 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1437
1438 if (wdev)
1439 iftype = wdev->iftype;
1440
1441 if (!nl80211_can_set_dev_channel(wdev))
1442 return -EOPNOTSUPP;
1443
1444 result = nl80211_parse_chandef(rdev, info, &chandef);
1445 if (result)
1446 return result;
1447
1448 mutex_lock(&rdev->devlist_mtx);
1449 switch (iftype) {
1450 case NL80211_IFTYPE_AP:
1451 case NL80211_IFTYPE_P2P_GO:
1452 if (wdev->beacon_interval) {
1453 result = -EBUSY;
1454 break;
1455 }
1456 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1457 result = -EINVAL;
1458 break;
1459 }
1460 wdev->preset_chandef = chandef;
1461 result = 0;
1462 break;
1463 case NL80211_IFTYPE_MESH_POINT:
1464 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1465 break;
1466 case NL80211_IFTYPE_MONITOR:
1467 result = cfg80211_set_monitor_channel(rdev, &chandef);
1468 break;
1469 default:
1470 result = -EINVAL;
1471 }
1472 mutex_unlock(&rdev->devlist_mtx);
1473
1474 return result;
1475 }
1476
1477 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1478 {
1479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1480 struct net_device *netdev = info->user_ptr[1];
1481
1482 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1483 }
1484
1485 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1486 {
1487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1488 struct net_device *dev = info->user_ptr[1];
1489 struct wireless_dev *wdev = dev->ieee80211_ptr;
1490 const u8 *bssid;
1491
1492 if (!info->attrs[NL80211_ATTR_MAC])
1493 return -EINVAL;
1494
1495 if (netif_running(dev))
1496 return -EBUSY;
1497
1498 if (!rdev->ops->set_wds_peer)
1499 return -EOPNOTSUPP;
1500
1501 if (wdev->iftype != NL80211_IFTYPE_WDS)
1502 return -EOPNOTSUPP;
1503
1504 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1505 return rdev_set_wds_peer(rdev, dev, bssid);
1506 }
1507
1508
1509 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1510 {
1511 struct cfg80211_registered_device *rdev;
1512 struct net_device *netdev = NULL;
1513 struct wireless_dev *wdev;
1514 int result = 0, rem_txq_params = 0;
1515 struct nlattr *nl_txq_params;
1516 u32 changed;
1517 u8 retry_short = 0, retry_long = 0;
1518 u32 frag_threshold = 0, rts_threshold = 0;
1519 u8 coverage_class = 0;
1520
1521 /*
1522 * Try to find the wiphy and netdev. Normally this
1523 * function shouldn't need the netdev, but this is
1524 * done for backward compatibility -- previously
1525 * setting the channel was done per wiphy, but now
1526 * it is per netdev. Previous userland like hostapd
1527 * also passed a netdev to set_wiphy, so that it is
1528 * possible to let that go to the right netdev!
1529 */
1530 mutex_lock(&cfg80211_mutex);
1531
1532 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1533 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1534
1535 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1536 if (netdev && netdev->ieee80211_ptr) {
1537 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1538 mutex_lock(&rdev->mtx);
1539 } else
1540 netdev = NULL;
1541 }
1542
1543 if (!netdev) {
1544 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1545 info->attrs);
1546 if (IS_ERR(rdev)) {
1547 mutex_unlock(&cfg80211_mutex);
1548 return PTR_ERR(rdev);
1549 }
1550 wdev = NULL;
1551 netdev = NULL;
1552 result = 0;
1553
1554 mutex_lock(&rdev->mtx);
1555 } else
1556 wdev = netdev->ieee80211_ptr;
1557
1558 /*
1559 * end workaround code, by now the rdev is available
1560 * and locked, and wdev may or may not be NULL.
1561 */
1562
1563 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1564 result = cfg80211_dev_rename(
1565 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1566
1567 mutex_unlock(&cfg80211_mutex);
1568
1569 if (result)
1570 goto bad_res;
1571
1572 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1573 struct ieee80211_txq_params txq_params;
1574 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1575
1576 if (!rdev->ops->set_txq_params) {
1577 result = -EOPNOTSUPP;
1578 goto bad_res;
1579 }
1580
1581 if (!netdev) {
1582 result = -EINVAL;
1583 goto bad_res;
1584 }
1585
1586 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1587 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1588 result = -EINVAL;
1589 goto bad_res;
1590 }
1591
1592 if (!netif_running(netdev)) {
1593 result = -ENETDOWN;
1594 goto bad_res;
1595 }
1596
1597 nla_for_each_nested(nl_txq_params,
1598 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1599 rem_txq_params) {
1600 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1601 nla_data(nl_txq_params),
1602 nla_len(nl_txq_params),
1603 txq_params_policy);
1604 result = parse_txq_params(tb, &txq_params);
1605 if (result)
1606 goto bad_res;
1607
1608 result = rdev_set_txq_params(rdev, netdev,
1609 &txq_params);
1610 if (result)
1611 goto bad_res;
1612 }
1613 }
1614
1615 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1616 result = __nl80211_set_channel(rdev,
1617 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1618 info);
1619 if (result)
1620 goto bad_res;
1621 }
1622
1623 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1624 struct wireless_dev *txp_wdev = wdev;
1625 enum nl80211_tx_power_setting type;
1626 int idx, mbm = 0;
1627
1628 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1629 txp_wdev = NULL;
1630
1631 if (!rdev->ops->set_tx_power) {
1632 result = -EOPNOTSUPP;
1633 goto bad_res;
1634 }
1635
1636 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1637 type = nla_get_u32(info->attrs[idx]);
1638
1639 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1640 (type != NL80211_TX_POWER_AUTOMATIC)) {
1641 result = -EINVAL;
1642 goto bad_res;
1643 }
1644
1645 if (type != NL80211_TX_POWER_AUTOMATIC) {
1646 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1647 mbm = nla_get_u32(info->attrs[idx]);
1648 }
1649
1650 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1651 if (result)
1652 goto bad_res;
1653 }
1654
1655 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1656 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1657 u32 tx_ant, rx_ant;
1658 if ((!rdev->wiphy.available_antennas_tx &&
1659 !rdev->wiphy.available_antennas_rx) ||
1660 !rdev->ops->set_antenna) {
1661 result = -EOPNOTSUPP;
1662 goto bad_res;
1663 }
1664
1665 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1666 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1667
1668 /* reject antenna configurations which don't match the
1669 * available antenna masks, except for the "all" mask */
1670 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1671 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1672 result = -EINVAL;
1673 goto bad_res;
1674 }
1675
1676 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1677 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1678
1679 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
1680 if (result)
1681 goto bad_res;
1682 }
1683
1684 changed = 0;
1685
1686 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1687 retry_short = nla_get_u8(
1688 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1689 if (retry_short == 0) {
1690 result = -EINVAL;
1691 goto bad_res;
1692 }
1693 changed |= WIPHY_PARAM_RETRY_SHORT;
1694 }
1695
1696 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1697 retry_long = nla_get_u8(
1698 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1699 if (retry_long == 0) {
1700 result = -EINVAL;
1701 goto bad_res;
1702 }
1703 changed |= WIPHY_PARAM_RETRY_LONG;
1704 }
1705
1706 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1707 frag_threshold = nla_get_u32(
1708 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1709 if (frag_threshold < 256) {
1710 result = -EINVAL;
1711 goto bad_res;
1712 }
1713 if (frag_threshold != (u32) -1) {
1714 /*
1715 * Fragments (apart from the last one) are required to
1716 * have even length. Make the fragmentation code
1717 * simpler by stripping LSB should someone try to use
1718 * odd threshold value.
1719 */
1720 frag_threshold &= ~0x1;
1721 }
1722 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1723 }
1724
1725 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1726 rts_threshold = nla_get_u32(
1727 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1728 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1729 }
1730
1731 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1732 coverage_class = nla_get_u8(
1733 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1734 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1735 }
1736
1737 if (changed) {
1738 u8 old_retry_short, old_retry_long;
1739 u32 old_frag_threshold, old_rts_threshold;
1740 u8 old_coverage_class;
1741
1742 if (!rdev->ops->set_wiphy_params) {
1743 result = -EOPNOTSUPP;
1744 goto bad_res;
1745 }
1746
1747 old_retry_short = rdev->wiphy.retry_short;
1748 old_retry_long = rdev->wiphy.retry_long;
1749 old_frag_threshold = rdev->wiphy.frag_threshold;
1750 old_rts_threshold = rdev->wiphy.rts_threshold;
1751 old_coverage_class = rdev->wiphy.coverage_class;
1752
1753 if (changed & WIPHY_PARAM_RETRY_SHORT)
1754 rdev->wiphy.retry_short = retry_short;
1755 if (changed & WIPHY_PARAM_RETRY_LONG)
1756 rdev->wiphy.retry_long = retry_long;
1757 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1758 rdev->wiphy.frag_threshold = frag_threshold;
1759 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1760 rdev->wiphy.rts_threshold = rts_threshold;
1761 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1762 rdev->wiphy.coverage_class = coverage_class;
1763
1764 result = rdev_set_wiphy_params(rdev, changed);
1765 if (result) {
1766 rdev->wiphy.retry_short = old_retry_short;
1767 rdev->wiphy.retry_long = old_retry_long;
1768 rdev->wiphy.frag_threshold = old_frag_threshold;
1769 rdev->wiphy.rts_threshold = old_rts_threshold;
1770 rdev->wiphy.coverage_class = old_coverage_class;
1771 }
1772 }
1773
1774 bad_res:
1775 mutex_unlock(&rdev->mtx);
1776 if (netdev)
1777 dev_put(netdev);
1778 return result;
1779 }
1780
1781 static inline u64 wdev_id(struct wireless_dev *wdev)
1782 {
1783 return (u64)wdev->identifier |
1784 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1785 }
1786
1787 static int nl80211_send_chandef(struct sk_buff *msg,
1788 struct cfg80211_chan_def *chandef)
1789 {
1790 WARN_ON(!cfg80211_chandef_valid(chandef));
1791
1792 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1793 chandef->chan->center_freq))
1794 return -ENOBUFS;
1795 switch (chandef->width) {
1796 case NL80211_CHAN_WIDTH_20_NOHT:
1797 case NL80211_CHAN_WIDTH_20:
1798 case NL80211_CHAN_WIDTH_40:
1799 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1800 cfg80211_get_chandef_type(chandef)))
1801 return -ENOBUFS;
1802 break;
1803 default:
1804 break;
1805 }
1806 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
1807 return -ENOBUFS;
1808 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
1809 return -ENOBUFS;
1810 if (chandef->center_freq2 &&
1811 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
1812 return -ENOBUFS;
1813 return 0;
1814 }
1815
1816 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
1817 struct cfg80211_registered_device *rdev,
1818 struct wireless_dev *wdev)
1819 {
1820 struct net_device *dev = wdev->netdev;
1821 void *hdr;
1822
1823 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1824 if (!hdr)
1825 return -1;
1826
1827 if (dev &&
1828 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1829 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1830 goto nla_put_failure;
1831
1832 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1833 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1835 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1836 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1837 rdev->devlist_generation ^
1838 (cfg80211_rdev_list_generation << 2)))
1839 goto nla_put_failure;
1840
1841 if (rdev->ops->get_channel) {
1842 int ret;
1843 struct cfg80211_chan_def chandef;
1844
1845 ret = rdev_get_channel(rdev, wdev, &chandef);
1846 if (ret == 0) {
1847 if (nl80211_send_chandef(msg, &chandef))
1848 goto nla_put_failure;
1849 }
1850 }
1851
1852 if (wdev->ssid_len) {
1853 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
1854 goto nla_put_failure;
1855 }
1856
1857 return genlmsg_end(msg, hdr);
1858
1859 nla_put_failure:
1860 genlmsg_cancel(msg, hdr);
1861 return -EMSGSIZE;
1862 }
1863
1864 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1865 {
1866 int wp_idx = 0;
1867 int if_idx = 0;
1868 int wp_start = cb->args[0];
1869 int if_start = cb->args[1];
1870 struct cfg80211_registered_device *rdev;
1871 struct wireless_dev *wdev;
1872
1873 mutex_lock(&cfg80211_mutex);
1874 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1875 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1876 continue;
1877 if (wp_idx < wp_start) {
1878 wp_idx++;
1879 continue;
1880 }
1881 if_idx = 0;
1882
1883 mutex_lock(&rdev->devlist_mtx);
1884 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1885 if (if_idx < if_start) {
1886 if_idx++;
1887 continue;
1888 }
1889 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
1890 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1891 rdev, wdev) < 0) {
1892 mutex_unlock(&rdev->devlist_mtx);
1893 goto out;
1894 }
1895 if_idx++;
1896 }
1897 mutex_unlock(&rdev->devlist_mtx);
1898
1899 wp_idx++;
1900 }
1901 out:
1902 mutex_unlock(&cfg80211_mutex);
1903
1904 cb->args[0] = wp_idx;
1905 cb->args[1] = if_idx;
1906
1907 return skb->len;
1908 }
1909
1910 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1911 {
1912 struct sk_buff *msg;
1913 struct cfg80211_registered_device *dev = info->user_ptr[0];
1914 struct wireless_dev *wdev = info->user_ptr[1];
1915
1916 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1917 if (!msg)
1918 return -ENOMEM;
1919
1920 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
1921 dev, wdev) < 0) {
1922 nlmsg_free(msg);
1923 return -ENOBUFS;
1924 }
1925
1926 return genlmsg_reply(msg, info);
1927 }
1928
1929 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1930 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1931 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1932 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1933 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1934 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1935 };
1936
1937 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1938 {
1939 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1940 int flag;
1941
1942 *mntrflags = 0;
1943
1944 if (!nla)
1945 return -EINVAL;
1946
1947 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1948 nla, mntr_flags_policy))
1949 return -EINVAL;
1950
1951 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1952 if (flags[flag])
1953 *mntrflags |= (1<<flag);
1954
1955 return 0;
1956 }
1957
1958 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1959 struct net_device *netdev, u8 use_4addr,
1960 enum nl80211_iftype iftype)
1961 {
1962 if (!use_4addr) {
1963 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1964 return -EBUSY;
1965 return 0;
1966 }
1967
1968 switch (iftype) {
1969 case NL80211_IFTYPE_AP_VLAN:
1970 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1971 return 0;
1972 break;
1973 case NL80211_IFTYPE_STATION:
1974 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1975 return 0;
1976 break;
1977 default:
1978 break;
1979 }
1980
1981 return -EOPNOTSUPP;
1982 }
1983
1984 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1985 {
1986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1987 struct vif_params params;
1988 int err;
1989 enum nl80211_iftype otype, ntype;
1990 struct net_device *dev = info->user_ptr[1];
1991 u32 _flags, *flags = NULL;
1992 bool change = false;
1993
1994 memset(&params, 0, sizeof(params));
1995
1996 otype = ntype = dev->ieee80211_ptr->iftype;
1997
1998 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1999 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2000 if (otype != ntype)
2001 change = true;
2002 if (ntype > NL80211_IFTYPE_MAX)
2003 return -EINVAL;
2004 }
2005
2006 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2007 struct wireless_dev *wdev = dev->ieee80211_ptr;
2008
2009 if (ntype != NL80211_IFTYPE_MESH_POINT)
2010 return -EINVAL;
2011 if (netif_running(dev))
2012 return -EBUSY;
2013
2014 wdev_lock(wdev);
2015 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2016 IEEE80211_MAX_MESH_ID_LEN);
2017 wdev->mesh_id_up_len =
2018 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2019 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2020 wdev->mesh_id_up_len);
2021 wdev_unlock(wdev);
2022 }
2023
2024 if (info->attrs[NL80211_ATTR_4ADDR]) {
2025 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2026 change = true;
2027 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2028 if (err)
2029 return err;
2030 } else {
2031 params.use_4addr = -1;
2032 }
2033
2034 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2035 if (ntype != NL80211_IFTYPE_MONITOR)
2036 return -EINVAL;
2037 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2038 &_flags);
2039 if (err)
2040 return err;
2041
2042 flags = &_flags;
2043 change = true;
2044 }
2045
2046 if (change)
2047 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2048 else
2049 err = 0;
2050
2051 if (!err && params.use_4addr != -1)
2052 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2053
2054 return err;
2055 }
2056
2057 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2058 {
2059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2060 struct vif_params params;
2061 struct wireless_dev *wdev;
2062 struct sk_buff *msg;
2063 int err;
2064 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2065 u32 flags;
2066
2067 memset(&params, 0, sizeof(params));
2068
2069 if (!info->attrs[NL80211_ATTR_IFNAME])
2070 return -EINVAL;
2071
2072 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2073 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2074 if (type > NL80211_IFTYPE_MAX)
2075 return -EINVAL;
2076 }
2077
2078 if (!rdev->ops->add_virtual_intf ||
2079 !(rdev->wiphy.interface_modes & (1 << type)))
2080 return -EOPNOTSUPP;
2081
2082 if (info->attrs[NL80211_ATTR_4ADDR]) {
2083 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2084 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2085 if (err)
2086 return err;
2087 }
2088
2089 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2090 if (!msg)
2091 return -ENOMEM;
2092
2093 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2094 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2095 &flags);
2096 wdev = rdev_add_virtual_intf(rdev,
2097 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2098 type, err ? NULL : &flags, &params);
2099 if (IS_ERR(wdev)) {
2100 nlmsg_free(msg);
2101 return PTR_ERR(wdev);
2102 }
2103
2104 switch (type) {
2105 case NL80211_IFTYPE_MESH_POINT:
2106 if (!info->attrs[NL80211_ATTR_MESH_ID])
2107 break;
2108 wdev_lock(wdev);
2109 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2110 IEEE80211_MAX_MESH_ID_LEN);
2111 wdev->mesh_id_up_len =
2112 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2113 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2114 wdev->mesh_id_up_len);
2115 wdev_unlock(wdev);
2116 break;
2117 case NL80211_IFTYPE_P2P_DEVICE:
2118 /*
2119 * P2P Device doesn't have a netdev, so doesn't go
2120 * through the netdev notifier and must be added here
2121 */
2122 mutex_init(&wdev->mtx);
2123 INIT_LIST_HEAD(&wdev->event_list);
2124 spin_lock_init(&wdev->event_lock);
2125 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2126 spin_lock_init(&wdev->mgmt_registrations_lock);
2127
2128 mutex_lock(&rdev->devlist_mtx);
2129 wdev->identifier = ++rdev->wdev_id;
2130 list_add_rcu(&wdev->list, &rdev->wdev_list);
2131 rdev->devlist_generation++;
2132 mutex_unlock(&rdev->devlist_mtx);
2133 break;
2134 default:
2135 break;
2136 }
2137
2138 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2139 rdev, wdev) < 0) {
2140 nlmsg_free(msg);
2141 return -ENOBUFS;
2142 }
2143
2144 return genlmsg_reply(msg, info);
2145 }
2146
2147 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2148 {
2149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2150 struct wireless_dev *wdev = info->user_ptr[1];
2151
2152 if (!rdev->ops->del_virtual_intf)
2153 return -EOPNOTSUPP;
2154
2155 /*
2156 * If we remove a wireless device without a netdev then clear
2157 * user_ptr[1] so that nl80211_post_doit won't dereference it
2158 * to check if it needs to do dev_put(). Otherwise it crashes
2159 * since the wdev has been freed, unlike with a netdev where
2160 * we need the dev_put() for the netdev to really be freed.
2161 */
2162 if (!wdev->netdev)
2163 info->user_ptr[1] = NULL;
2164
2165 return rdev_del_virtual_intf(rdev, wdev);
2166 }
2167
2168 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2169 {
2170 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2171 struct net_device *dev = info->user_ptr[1];
2172 u16 noack_map;
2173
2174 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2175 return -EINVAL;
2176
2177 if (!rdev->ops->set_noack_map)
2178 return -EOPNOTSUPP;
2179
2180 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2181
2182 return rdev_set_noack_map(rdev, dev, noack_map);
2183 }
2184
2185 struct get_key_cookie {
2186 struct sk_buff *msg;
2187 int error;
2188 int idx;
2189 };
2190
2191 static void get_key_callback(void *c, struct key_params *params)
2192 {
2193 struct nlattr *key;
2194 struct get_key_cookie *cookie = c;
2195
2196 if ((params->key &&
2197 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2198 params->key_len, params->key)) ||
2199 (params->seq &&
2200 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2201 params->seq_len, params->seq)) ||
2202 (params->cipher &&
2203 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2204 params->cipher)))
2205 goto nla_put_failure;
2206
2207 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2208 if (!key)
2209 goto nla_put_failure;
2210
2211 if ((params->key &&
2212 nla_put(cookie->msg, NL80211_KEY_DATA,
2213 params->key_len, params->key)) ||
2214 (params->seq &&
2215 nla_put(cookie->msg, NL80211_KEY_SEQ,
2216 params->seq_len, params->seq)) ||
2217 (params->cipher &&
2218 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2219 params->cipher)))
2220 goto nla_put_failure;
2221
2222 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2223 goto nla_put_failure;
2224
2225 nla_nest_end(cookie->msg, key);
2226
2227 return;
2228 nla_put_failure:
2229 cookie->error = 1;
2230 }
2231
2232 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2233 {
2234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2235 int err;
2236 struct net_device *dev = info->user_ptr[1];
2237 u8 key_idx = 0;
2238 const u8 *mac_addr = NULL;
2239 bool pairwise;
2240 struct get_key_cookie cookie = {
2241 .error = 0,
2242 };
2243 void *hdr;
2244 struct sk_buff *msg;
2245
2246 if (info->attrs[NL80211_ATTR_KEY_IDX])
2247 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2248
2249 if (key_idx > 5)
2250 return -EINVAL;
2251
2252 if (info->attrs[NL80211_ATTR_MAC])
2253 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2254
2255 pairwise = !!mac_addr;
2256 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2257 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2258 if (kt >= NUM_NL80211_KEYTYPES)
2259 return -EINVAL;
2260 if (kt != NL80211_KEYTYPE_GROUP &&
2261 kt != NL80211_KEYTYPE_PAIRWISE)
2262 return -EINVAL;
2263 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2264 }
2265
2266 if (!rdev->ops->get_key)
2267 return -EOPNOTSUPP;
2268
2269 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2270 if (!msg)
2271 return -ENOMEM;
2272
2273 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2274 NL80211_CMD_NEW_KEY);
2275 if (IS_ERR(hdr))
2276 return PTR_ERR(hdr);
2277
2278 cookie.msg = msg;
2279 cookie.idx = key_idx;
2280
2281 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2282 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2283 goto nla_put_failure;
2284 if (mac_addr &&
2285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2286 goto nla_put_failure;
2287
2288 if (pairwise && mac_addr &&
2289 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2290 return -ENOENT;
2291
2292 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2293 get_key_callback);
2294
2295 if (err)
2296 goto free_msg;
2297
2298 if (cookie.error)
2299 goto nla_put_failure;
2300
2301 genlmsg_end(msg, hdr);
2302 return genlmsg_reply(msg, info);
2303
2304 nla_put_failure:
2305 err = -ENOBUFS;
2306 free_msg:
2307 nlmsg_free(msg);
2308 return err;
2309 }
2310
2311 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2312 {
2313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2314 struct key_parse key;
2315 int err;
2316 struct net_device *dev = info->user_ptr[1];
2317
2318 err = nl80211_parse_key(info, &key);
2319 if (err)
2320 return err;
2321
2322 if (key.idx < 0)
2323 return -EINVAL;
2324
2325 /* only support setting default key */
2326 if (!key.def && !key.defmgmt)
2327 return -EINVAL;
2328
2329 wdev_lock(dev->ieee80211_ptr);
2330
2331 if (key.def) {
2332 if (!rdev->ops->set_default_key) {
2333 err = -EOPNOTSUPP;
2334 goto out;
2335 }
2336
2337 err = nl80211_key_allowed(dev->ieee80211_ptr);
2338 if (err)
2339 goto out;
2340
2341 err = rdev_set_default_key(rdev, dev, key.idx,
2342 key.def_uni, key.def_multi);
2343
2344 if (err)
2345 goto out;
2346
2347 #ifdef CONFIG_CFG80211_WEXT
2348 dev->ieee80211_ptr->wext.default_key = key.idx;
2349 #endif
2350 } else {
2351 if (key.def_uni || !key.def_multi) {
2352 err = -EINVAL;
2353 goto out;
2354 }
2355
2356 if (!rdev->ops->set_default_mgmt_key) {
2357 err = -EOPNOTSUPP;
2358 goto out;
2359 }
2360
2361 err = nl80211_key_allowed(dev->ieee80211_ptr);
2362 if (err)
2363 goto out;
2364
2365 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2366 if (err)
2367 goto out;
2368
2369 #ifdef CONFIG_CFG80211_WEXT
2370 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2371 #endif
2372 }
2373
2374 out:
2375 wdev_unlock(dev->ieee80211_ptr);
2376
2377 return err;
2378 }
2379
2380 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2381 {
2382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2383 int err;
2384 struct net_device *dev = info->user_ptr[1];
2385 struct key_parse key;
2386 const u8 *mac_addr = NULL;
2387
2388 err = nl80211_parse_key(info, &key);
2389 if (err)
2390 return err;
2391
2392 if (!key.p.key)
2393 return -EINVAL;
2394
2395 if (info->attrs[NL80211_ATTR_MAC])
2396 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2397
2398 if (key.type == -1) {
2399 if (mac_addr)
2400 key.type = NL80211_KEYTYPE_PAIRWISE;
2401 else
2402 key.type = NL80211_KEYTYPE_GROUP;
2403 }
2404
2405 /* for now */
2406 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2407 key.type != NL80211_KEYTYPE_GROUP)
2408 return -EINVAL;
2409
2410 if (!rdev->ops->add_key)
2411 return -EOPNOTSUPP;
2412
2413 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2414 key.type == NL80211_KEYTYPE_PAIRWISE,
2415 mac_addr))
2416 return -EINVAL;
2417
2418 wdev_lock(dev->ieee80211_ptr);
2419 err = nl80211_key_allowed(dev->ieee80211_ptr);
2420 if (!err)
2421 err = rdev_add_key(rdev, dev, key.idx,
2422 key.type == NL80211_KEYTYPE_PAIRWISE,
2423 mac_addr, &key.p);
2424 wdev_unlock(dev->ieee80211_ptr);
2425
2426 return err;
2427 }
2428
2429 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2430 {
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 int err;
2433 struct net_device *dev = info->user_ptr[1];
2434 u8 *mac_addr = NULL;
2435 struct key_parse key;
2436
2437 err = nl80211_parse_key(info, &key);
2438 if (err)
2439 return err;
2440
2441 if (info->attrs[NL80211_ATTR_MAC])
2442 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2443
2444 if (key.type == -1) {
2445 if (mac_addr)
2446 key.type = NL80211_KEYTYPE_PAIRWISE;
2447 else
2448 key.type = NL80211_KEYTYPE_GROUP;
2449 }
2450
2451 /* for now */
2452 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2453 key.type != NL80211_KEYTYPE_GROUP)
2454 return -EINVAL;
2455
2456 if (!rdev->ops->del_key)
2457 return -EOPNOTSUPP;
2458
2459 wdev_lock(dev->ieee80211_ptr);
2460 err = nl80211_key_allowed(dev->ieee80211_ptr);
2461
2462 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2463 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2464 err = -ENOENT;
2465
2466 if (!err)
2467 err = rdev_del_key(rdev, dev, key.idx,
2468 key.type == NL80211_KEYTYPE_PAIRWISE,
2469 mac_addr);
2470
2471 #ifdef CONFIG_CFG80211_WEXT
2472 if (!err) {
2473 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2474 dev->ieee80211_ptr->wext.default_key = -1;
2475 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2476 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2477 }
2478 #endif
2479 wdev_unlock(dev->ieee80211_ptr);
2480
2481 return err;
2482 }
2483
2484 static int nl80211_parse_beacon(struct genl_info *info,
2485 struct cfg80211_beacon_data *bcn)
2486 {
2487 bool haveinfo = false;
2488
2489 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2490 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2491 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2492 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2493 return -EINVAL;
2494
2495 memset(bcn, 0, sizeof(*bcn));
2496
2497 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2498 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2499 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2500 if (!bcn->head_len)
2501 return -EINVAL;
2502 haveinfo = true;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2506 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2507 bcn->tail_len =
2508 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2509 haveinfo = true;
2510 }
2511
2512 if (!haveinfo)
2513 return -EINVAL;
2514
2515 if (info->attrs[NL80211_ATTR_IE]) {
2516 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2517 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2518 }
2519
2520 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2521 bcn->proberesp_ies =
2522 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2523 bcn->proberesp_ies_len =
2524 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2525 }
2526
2527 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2528 bcn->assocresp_ies =
2529 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2530 bcn->assocresp_ies_len =
2531 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2532 }
2533
2534 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2535 bcn->probe_resp =
2536 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2537 bcn->probe_resp_len =
2538 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2539 }
2540
2541 return 0;
2542 }
2543
2544 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2545 struct cfg80211_ap_settings *params)
2546 {
2547 struct wireless_dev *wdev;
2548 bool ret = false;
2549
2550 mutex_lock(&rdev->devlist_mtx);
2551
2552 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2553 if (wdev->iftype != NL80211_IFTYPE_AP &&
2554 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2555 continue;
2556
2557 if (!wdev->preset_chandef.chan)
2558 continue;
2559
2560 params->chandef = wdev->preset_chandef;
2561 ret = true;
2562 break;
2563 }
2564
2565 mutex_unlock(&rdev->devlist_mtx);
2566
2567 return ret;
2568 }
2569
2570 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2571 enum nl80211_auth_type auth_type,
2572 enum nl80211_commands cmd)
2573 {
2574 if (auth_type > NL80211_AUTHTYPE_MAX)
2575 return false;
2576
2577 switch (cmd) {
2578 case NL80211_CMD_AUTHENTICATE:
2579 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2580 auth_type == NL80211_AUTHTYPE_SAE)
2581 return false;
2582 return true;
2583 case NL80211_CMD_CONNECT:
2584 case NL80211_CMD_START_AP:
2585 /* SAE not supported yet */
2586 if (auth_type == NL80211_AUTHTYPE_SAE)
2587 return false;
2588 return true;
2589 default:
2590 return false;
2591 }
2592 }
2593
2594 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2595 {
2596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2597 struct net_device *dev = info->user_ptr[1];
2598 struct wireless_dev *wdev = dev->ieee80211_ptr;
2599 struct cfg80211_ap_settings params;
2600 int err;
2601
2602 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2603 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2604 return -EOPNOTSUPP;
2605
2606 if (!rdev->ops->start_ap)
2607 return -EOPNOTSUPP;
2608
2609 if (wdev->beacon_interval)
2610 return -EALREADY;
2611
2612 memset(&params, 0, sizeof(params));
2613
2614 /* these are required for START_AP */
2615 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2616 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2617 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2618 return -EINVAL;
2619
2620 err = nl80211_parse_beacon(info, &params.beacon);
2621 if (err)
2622 return err;
2623
2624 params.beacon_interval =
2625 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2626 params.dtim_period =
2627 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2628
2629 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2630 if (err)
2631 return err;
2632
2633 /*
2634 * In theory, some of these attributes should be required here
2635 * but since they were not used when the command was originally
2636 * added, keep them optional for old user space programs to let
2637 * them continue to work with drivers that do not need the
2638 * additional information -- drivers must check!
2639 */
2640 if (info->attrs[NL80211_ATTR_SSID]) {
2641 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2642 params.ssid_len =
2643 nla_len(info->attrs[NL80211_ATTR_SSID]);
2644 if (params.ssid_len == 0 ||
2645 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2646 return -EINVAL;
2647 }
2648
2649 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2650 params.hidden_ssid = nla_get_u32(
2651 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2652 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2653 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2654 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2655 return -EINVAL;
2656 }
2657
2658 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2659
2660 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2661 params.auth_type = nla_get_u32(
2662 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2663 if (!nl80211_valid_auth_type(rdev, params.auth_type,
2664 NL80211_CMD_START_AP))
2665 return -EINVAL;
2666 } else
2667 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2668
2669 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2670 NL80211_MAX_NR_CIPHER_SUITES);
2671 if (err)
2672 return err;
2673
2674 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2675 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2676 return -EOPNOTSUPP;
2677 params.inactivity_timeout = nla_get_u16(
2678 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2679 }
2680
2681 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
2682 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2683 return -EINVAL;
2684 params.p2p_ctwindow =
2685 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
2686 if (params.p2p_ctwindow > 127)
2687 return -EINVAL;
2688 if (params.p2p_ctwindow != 0 &&
2689 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
2690 return -EINVAL;
2691 }
2692
2693 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
2694 u8 tmp;
2695
2696 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2697 return -EINVAL;
2698 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
2699 if (tmp > 1)
2700 return -EINVAL;
2701 params.p2p_opp_ps = tmp;
2702 if (params.p2p_opp_ps != 0 &&
2703 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
2704 return -EINVAL;
2705 }
2706
2707 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2708 err = nl80211_parse_chandef(rdev, info, &params.chandef);
2709 if (err)
2710 return err;
2711 } else if (wdev->preset_chandef.chan) {
2712 params.chandef = wdev->preset_chandef;
2713 } else if (!nl80211_get_ap_channel(rdev, &params))
2714 return -EINVAL;
2715
2716 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
2717 return -EINVAL;
2718
2719 mutex_lock(&rdev->devlist_mtx);
2720 err = cfg80211_can_use_chan(rdev, wdev, params.chandef.chan,
2721 CHAN_MODE_SHARED);
2722 mutex_unlock(&rdev->devlist_mtx);
2723
2724 if (err)
2725 return err;
2726
2727 err = rdev_start_ap(rdev, dev, &params);
2728 if (!err) {
2729 wdev->preset_chandef = params.chandef;
2730 wdev->beacon_interval = params.beacon_interval;
2731 wdev->channel = params.chandef.chan;
2732 wdev->ssid_len = params.ssid_len;
2733 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
2734 }
2735 return err;
2736 }
2737
2738 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2739 {
2740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741 struct net_device *dev = info->user_ptr[1];
2742 struct wireless_dev *wdev = dev->ieee80211_ptr;
2743 struct cfg80211_beacon_data params;
2744 int err;
2745
2746 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2747 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2748 return -EOPNOTSUPP;
2749
2750 if (!rdev->ops->change_beacon)
2751 return -EOPNOTSUPP;
2752
2753 if (!wdev->beacon_interval)
2754 return -EINVAL;
2755
2756 err = nl80211_parse_beacon(info, &params);
2757 if (err)
2758 return err;
2759
2760 return rdev_change_beacon(rdev, dev, &params);
2761 }
2762
2763 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2764 {
2765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2766 struct net_device *dev = info->user_ptr[1];
2767
2768 return cfg80211_stop_ap(rdev, dev);
2769 }
2770
2771 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2772 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2773 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2774 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2775 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2776 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2777 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2778 };
2779
2780 static int parse_station_flags(struct genl_info *info,
2781 enum nl80211_iftype iftype,
2782 struct station_parameters *params)
2783 {
2784 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2785 struct nlattr *nla;
2786 int flag;
2787
2788 /*
2789 * Try parsing the new attribute first so userspace
2790 * can specify both for older kernels.
2791 */
2792 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2793 if (nla) {
2794 struct nl80211_sta_flag_update *sta_flags;
2795
2796 sta_flags = nla_data(nla);
2797 params->sta_flags_mask = sta_flags->mask;
2798 params->sta_flags_set = sta_flags->set;
2799 if ((params->sta_flags_mask |
2800 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2801 return -EINVAL;
2802 return 0;
2803 }
2804
2805 /* if present, parse the old attribute */
2806
2807 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2808 if (!nla)
2809 return 0;
2810
2811 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2812 nla, sta_flags_policy))
2813 return -EINVAL;
2814
2815 /*
2816 * Only allow certain flags for interface types so that
2817 * other attributes are silently ignored. Remember that
2818 * this is backward compatibility code with old userspace
2819 * and shouldn't be hit in other cases anyway.
2820 */
2821 switch (iftype) {
2822 case NL80211_IFTYPE_AP:
2823 case NL80211_IFTYPE_AP_VLAN:
2824 case NL80211_IFTYPE_P2P_GO:
2825 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2826 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2827 BIT(NL80211_STA_FLAG_WME) |
2828 BIT(NL80211_STA_FLAG_MFP);
2829 break;
2830 case NL80211_IFTYPE_P2P_CLIENT:
2831 case NL80211_IFTYPE_STATION:
2832 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2833 BIT(NL80211_STA_FLAG_TDLS_PEER);
2834 break;
2835 case NL80211_IFTYPE_MESH_POINT:
2836 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2837 BIT(NL80211_STA_FLAG_MFP) |
2838 BIT(NL80211_STA_FLAG_AUTHORIZED);
2839 default:
2840 return -EINVAL;
2841 }
2842
2843 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2844 if (flags[flag]) {
2845 params->sta_flags_set |= (1<<flag);
2846
2847 /* no longer support new API additions in old API */
2848 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2849 return -EINVAL;
2850 }
2851 }
2852
2853 return 0;
2854 }
2855
2856 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2857 int attr)
2858 {
2859 struct nlattr *rate;
2860 u32 bitrate;
2861 u16 bitrate_compat;
2862
2863 rate = nla_nest_start(msg, attr);
2864 if (!rate)
2865 return false;
2866
2867 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2868 bitrate = cfg80211_calculate_bitrate(info);
2869 /* report 16-bit bitrate only if we can */
2870 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2871 if (bitrate > 0 &&
2872 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
2873 return false;
2874 if (bitrate_compat > 0 &&
2875 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
2876 return false;
2877
2878 if (info->flags & RATE_INFO_FLAGS_MCS) {
2879 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
2880 return false;
2881 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
2882 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
2883 return false;
2884 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
2885 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
2886 return false;
2887 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
2888 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
2889 return false;
2890 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
2891 return false;
2892 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
2893 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
2894 return false;
2895 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
2896 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
2897 return false;
2898 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
2899 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
2900 return false;
2901 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
2902 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
2903 return false;
2904 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
2905 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
2906 return false;
2907 }
2908
2909 nla_nest_end(msg, rate);
2910 return true;
2911 }
2912
2913 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
2914 int flags,
2915 struct cfg80211_registered_device *rdev,
2916 struct net_device *dev,
2917 const u8 *mac_addr, struct station_info *sinfo)
2918 {
2919 void *hdr;
2920 struct nlattr *sinfoattr, *bss_param;
2921
2922 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
2923 if (!hdr)
2924 return -1;
2925
2926 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2927 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2928 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2929 goto nla_put_failure;
2930
2931 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2932 if (!sinfoattr)
2933 goto nla_put_failure;
2934 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2935 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2936 sinfo->connected_time))
2937 goto nla_put_failure;
2938 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2939 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2940 sinfo->inactive_time))
2941 goto nla_put_failure;
2942 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2943 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2944 sinfo->rx_bytes))
2945 goto nla_put_failure;
2946 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2947 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2948 sinfo->tx_bytes))
2949 goto nla_put_failure;
2950 if ((sinfo->filled & STATION_INFO_LLID) &&
2951 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2952 goto nla_put_failure;
2953 if ((sinfo->filled & STATION_INFO_PLID) &&
2954 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2955 goto nla_put_failure;
2956 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2957 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2958 sinfo->plink_state))
2959 goto nla_put_failure;
2960 switch (rdev->wiphy.signal_type) {
2961 case CFG80211_SIGNAL_TYPE_MBM:
2962 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2963 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2964 sinfo->signal))
2965 goto nla_put_failure;
2966 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2967 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2968 sinfo->signal_avg))
2969 goto nla_put_failure;
2970 break;
2971 default:
2972 break;
2973 }
2974 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2975 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2976 NL80211_STA_INFO_TX_BITRATE))
2977 goto nla_put_failure;
2978 }
2979 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2980 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2981 NL80211_STA_INFO_RX_BITRATE))
2982 goto nla_put_failure;
2983 }
2984 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2985 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2986 sinfo->rx_packets))
2987 goto nla_put_failure;
2988 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2989 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2990 sinfo->tx_packets))
2991 goto nla_put_failure;
2992 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2993 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2994 sinfo->tx_retries))
2995 goto nla_put_failure;
2996 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2997 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2998 sinfo->tx_failed))
2999 goto nla_put_failure;
3000 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3001 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3002 sinfo->beacon_loss_count))
3003 goto nla_put_failure;
3004 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3005 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3006 if (!bss_param)
3007 goto nla_put_failure;
3008
3009 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3010 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3011 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3012 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3013 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3014 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3015 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3016 sinfo->bss_param.dtim_period) ||
3017 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3018 sinfo->bss_param.beacon_interval))
3019 goto nla_put_failure;
3020
3021 nla_nest_end(msg, bss_param);
3022 }
3023 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3024 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3025 sizeof(struct nl80211_sta_flag_update),
3026 &sinfo->sta_flags))
3027 goto nla_put_failure;
3028 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3029 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3030 sinfo->t_offset))
3031 goto nla_put_failure;
3032 nla_nest_end(msg, sinfoattr);
3033
3034 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3035 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3036 sinfo->assoc_req_ies))
3037 goto nla_put_failure;
3038
3039 return genlmsg_end(msg, hdr);
3040
3041 nla_put_failure:
3042 genlmsg_cancel(msg, hdr);
3043 return -EMSGSIZE;
3044 }
3045
3046 static int nl80211_dump_station(struct sk_buff *skb,
3047 struct netlink_callback *cb)
3048 {
3049 struct station_info sinfo;
3050 struct cfg80211_registered_device *dev;
3051 struct net_device *netdev;
3052 u8 mac_addr[ETH_ALEN];
3053 int sta_idx = cb->args[1];
3054 int err;
3055
3056 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3057 if (err)
3058 return err;
3059
3060 if (!dev->ops->dump_station) {
3061 err = -EOPNOTSUPP;
3062 goto out_err;
3063 }
3064
3065 while (1) {
3066 memset(&sinfo, 0, sizeof(sinfo));
3067 err = rdev_dump_station(dev, netdev, sta_idx,
3068 mac_addr, &sinfo);
3069 if (err == -ENOENT)
3070 break;
3071 if (err)
3072 goto out_err;
3073
3074 if (nl80211_send_station(skb,
3075 NETLINK_CB(cb->skb).portid,
3076 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3077 dev, netdev, mac_addr,
3078 &sinfo) < 0)
3079 goto out;
3080
3081 sta_idx++;
3082 }
3083
3084
3085 out:
3086 cb->args[1] = sta_idx;
3087 err = skb->len;
3088 out_err:
3089 nl80211_finish_netdev_dump(dev);
3090
3091 return err;
3092 }
3093
3094 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3095 {
3096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3097 struct net_device *dev = info->user_ptr[1];
3098 struct station_info sinfo;
3099 struct sk_buff *msg;
3100 u8 *mac_addr = NULL;
3101 int err;
3102
3103 memset(&sinfo, 0, sizeof(sinfo));
3104
3105 if (!info->attrs[NL80211_ATTR_MAC])
3106 return -EINVAL;
3107
3108 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3109
3110 if (!rdev->ops->get_station)
3111 return -EOPNOTSUPP;
3112
3113 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3114 if (err)
3115 return err;
3116
3117 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3118 if (!msg)
3119 return -ENOMEM;
3120
3121 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3122 rdev, dev, mac_addr, &sinfo) < 0) {
3123 nlmsg_free(msg);
3124 return -ENOBUFS;
3125 }
3126
3127 return genlmsg_reply(msg, info);
3128 }
3129
3130 /*
3131 * Get vlan interface making sure it is running and on the right wiphy.
3132 */
3133 static struct net_device *get_vlan(struct genl_info *info,
3134 struct cfg80211_registered_device *rdev)
3135 {
3136 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3137 struct net_device *v;
3138 int ret;
3139
3140 if (!vlanattr)
3141 return NULL;
3142
3143 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3144 if (!v)
3145 return ERR_PTR(-ENODEV);
3146
3147 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3148 ret = -EINVAL;
3149 goto error;
3150 }
3151
3152 if (!netif_running(v)) {
3153 ret = -ENETDOWN;
3154 goto error;
3155 }
3156
3157 return v;
3158 error:
3159 dev_put(v);
3160 return ERR_PTR(ret);
3161 }
3162
3163 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3164 {
3165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3166 int err;
3167 struct net_device *dev = info->user_ptr[1];
3168 struct station_parameters params;
3169 u8 *mac_addr = NULL;
3170
3171 memset(&params, 0, sizeof(params));
3172
3173 params.listen_interval = -1;
3174 params.plink_state = -1;
3175
3176 if (info->attrs[NL80211_ATTR_STA_AID])
3177 return -EINVAL;
3178
3179 if (!info->attrs[NL80211_ATTR_MAC])
3180 return -EINVAL;
3181
3182 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3183
3184 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3185 params.supported_rates =
3186 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3187 params.supported_rates_len =
3188 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3189 }
3190
3191 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3192 params.listen_interval =
3193 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3194
3195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3196 params.ht_capa =
3197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3198
3199 if (!rdev->ops->change_station)
3200 return -EOPNOTSUPP;
3201
3202 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3203 return -EINVAL;
3204
3205 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3206 params.plink_action =
3207 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3208
3209 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3210 params.plink_state =
3211 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3212
3213 switch (dev->ieee80211_ptr->iftype) {
3214 case NL80211_IFTYPE_AP:
3215 case NL80211_IFTYPE_AP_VLAN:
3216 case NL80211_IFTYPE_P2P_GO:
3217 /* disallow mesh-specific things */
3218 if (params.plink_action)
3219 return -EINVAL;
3220
3221 /* TDLS can't be set, ... */
3222 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3223 return -EINVAL;
3224 /*
3225 * ... but don't bother the driver with it. This works around
3226 * a hostapd/wpa_supplicant issue -- it always includes the
3227 * TLDS_PEER flag in the mask even for AP mode.
3228 */
3229 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3230
3231 /* accept only the listed bits */
3232 if (params.sta_flags_mask &
3233 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3234 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3235 BIT(NL80211_STA_FLAG_WME) |
3236 BIT(NL80211_STA_FLAG_MFP)))
3237 return -EINVAL;
3238
3239 /* must be last in here for error handling */
3240 params.vlan = get_vlan(info, rdev);
3241 if (IS_ERR(params.vlan))
3242 return PTR_ERR(params.vlan);
3243 break;
3244 case NL80211_IFTYPE_P2P_CLIENT:
3245 case NL80211_IFTYPE_STATION:
3246 /*
3247 * Don't allow userspace to change the TDLS_PEER flag,
3248 * but silently ignore attempts to change it since we
3249 * don't have state here to verify that it doesn't try
3250 * to change the flag.
3251 */
3252 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3253 /* fall through */
3254 case NL80211_IFTYPE_ADHOC:
3255 /* disallow things sta doesn't support */
3256 if (params.plink_action)
3257 return -EINVAL;
3258 if (params.ht_capa)
3259 return -EINVAL;
3260 if (params.listen_interval >= 0)
3261 return -EINVAL;
3262 /* reject any changes other than AUTHORIZED */
3263 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3264 return -EINVAL;
3265 break;
3266 case NL80211_IFTYPE_MESH_POINT:
3267 /* disallow things mesh doesn't support */
3268 if (params.vlan)
3269 return -EINVAL;
3270 if (params.ht_capa)
3271 return -EINVAL;
3272 if (params.listen_interval >= 0)
3273 return -EINVAL;
3274 /*
3275 * No special handling for TDLS here -- the userspace
3276 * mesh code doesn't have this bug.
3277 */
3278 if (params.sta_flags_mask &
3279 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3280 BIT(NL80211_STA_FLAG_MFP) |
3281 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3282 return -EINVAL;
3283 break;
3284 default:
3285 return -EOPNOTSUPP;
3286 }
3287
3288 /* be aware of params.vlan when changing code here */
3289
3290 err = rdev_change_station(rdev, dev, mac_addr, &params);
3291
3292 if (params.vlan)
3293 dev_put(params.vlan);
3294
3295 return err;
3296 }
3297
3298 static struct nla_policy
3299 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3300 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3301 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3302 };
3303
3304 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3305 {
3306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3307 int err;
3308 struct net_device *dev = info->user_ptr[1];
3309 struct station_parameters params;
3310 u8 *mac_addr = NULL;
3311
3312 memset(&params, 0, sizeof(params));
3313
3314 if (!info->attrs[NL80211_ATTR_MAC])
3315 return -EINVAL;
3316
3317 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3318 return -EINVAL;
3319
3320 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3321 return -EINVAL;
3322
3323 if (!info->attrs[NL80211_ATTR_STA_AID])
3324 return -EINVAL;
3325
3326 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3327 params.supported_rates =
3328 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3329 params.supported_rates_len =
3330 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3331 params.listen_interval =
3332 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3333
3334 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3335 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3336 return -EINVAL;
3337
3338 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3339 params.ht_capa =
3340 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3341
3342 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3343 params.vht_capa =
3344 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3345
3346 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3347 params.plink_action =
3348 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3349
3350 if (!rdev->ops->add_station)
3351 return -EOPNOTSUPP;
3352
3353 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3354 return -EINVAL;
3355
3356 switch (dev->ieee80211_ptr->iftype) {
3357 case NL80211_IFTYPE_AP:
3358 case NL80211_IFTYPE_AP_VLAN:
3359 case NL80211_IFTYPE_P2P_GO:
3360 /* parse WME attributes if sta is WME capable */
3361 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3362 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3363 info->attrs[NL80211_ATTR_STA_WME]) {
3364 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3365 struct nlattr *nla;
3366
3367 nla = info->attrs[NL80211_ATTR_STA_WME];
3368 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3369 nl80211_sta_wme_policy);
3370 if (err)
3371 return err;
3372
3373 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3374 params.uapsd_queues =
3375 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3376 if (params.uapsd_queues &
3377 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3378 return -EINVAL;
3379
3380 if (tb[NL80211_STA_WME_MAX_SP])
3381 params.max_sp =
3382 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3383
3384 if (params.max_sp &
3385 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3386 return -EINVAL;
3387
3388 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3389 }
3390 /* TDLS peers cannot be added */
3391 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3392 return -EINVAL;
3393 /* but don't bother the driver with it */
3394 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3395
3396 /* must be last in here for error handling */
3397 params.vlan = get_vlan(info, rdev);
3398 if (IS_ERR(params.vlan))
3399 return PTR_ERR(params.vlan);
3400 break;
3401 case NL80211_IFTYPE_MESH_POINT:
3402 /* TDLS peers cannot be added */
3403 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3404 return -EINVAL;
3405 break;
3406 case NL80211_IFTYPE_STATION:
3407 /* Only TDLS peers can be added */
3408 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3409 return -EINVAL;
3410 /* Can only add if TDLS ... */
3411 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3412 return -EOPNOTSUPP;
3413 /* ... with external setup is supported */
3414 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3415 return -EOPNOTSUPP;
3416 break;
3417 default:
3418 return -EOPNOTSUPP;
3419 }
3420
3421 /* be aware of params.vlan when changing code here */
3422
3423 err = rdev_add_station(rdev, dev, mac_addr, &params);
3424
3425 if (params.vlan)
3426 dev_put(params.vlan);
3427 return err;
3428 }
3429
3430 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3431 {
3432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3433 struct net_device *dev = info->user_ptr[1];
3434 u8 *mac_addr = NULL;
3435
3436 if (info->attrs[NL80211_ATTR_MAC])
3437 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3438
3439 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3440 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3441 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3442 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3443 return -EINVAL;
3444
3445 if (!rdev->ops->del_station)
3446 return -EOPNOTSUPP;
3447
3448 return rdev_del_station(rdev, dev, mac_addr);
3449 }
3450
3451 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
3452 int flags, struct net_device *dev,
3453 u8 *dst, u8 *next_hop,
3454 struct mpath_info *pinfo)
3455 {
3456 void *hdr;
3457 struct nlattr *pinfoattr;
3458
3459 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3460 if (!hdr)
3461 return -1;
3462
3463 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3464 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3465 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3466 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3467 goto nla_put_failure;
3468
3469 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3470 if (!pinfoattr)
3471 goto nla_put_failure;
3472 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3473 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3474 pinfo->frame_qlen))
3475 goto nla_put_failure;
3476 if (((pinfo->filled & MPATH_INFO_SN) &&
3477 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3478 ((pinfo->filled & MPATH_INFO_METRIC) &&
3479 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3480 pinfo->metric)) ||
3481 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3482 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3483 pinfo->exptime)) ||
3484 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3485 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3486 pinfo->flags)) ||
3487 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3488 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3489 pinfo->discovery_timeout)) ||
3490 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3491 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3492 pinfo->discovery_retries)))
3493 goto nla_put_failure;
3494
3495 nla_nest_end(msg, pinfoattr);
3496
3497 return genlmsg_end(msg, hdr);
3498
3499 nla_put_failure:
3500 genlmsg_cancel(msg, hdr);
3501 return -EMSGSIZE;
3502 }
3503
3504 static int nl80211_dump_mpath(struct sk_buff *skb,
3505 struct netlink_callback *cb)
3506 {
3507 struct mpath_info pinfo;
3508 struct cfg80211_registered_device *dev;
3509 struct net_device *netdev;
3510 u8 dst[ETH_ALEN];
3511 u8 next_hop[ETH_ALEN];
3512 int path_idx = cb->args[1];
3513 int err;
3514
3515 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3516 if (err)
3517 return err;
3518
3519 if (!dev->ops->dump_mpath) {
3520 err = -EOPNOTSUPP;
3521 goto out_err;
3522 }
3523
3524 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3525 err = -EOPNOTSUPP;
3526 goto out_err;
3527 }
3528
3529 while (1) {
3530 err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
3531 &pinfo);
3532 if (err == -ENOENT)
3533 break;
3534 if (err)
3535 goto out_err;
3536
3537 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
3538 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3539 netdev, dst, next_hop,
3540 &pinfo) < 0)
3541 goto out;
3542
3543 path_idx++;
3544 }
3545
3546
3547 out:
3548 cb->args[1] = path_idx;
3549 err = skb->len;
3550 out_err:
3551 nl80211_finish_netdev_dump(dev);
3552 return err;
3553 }
3554
3555 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3556 {
3557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3558 int err;
3559 struct net_device *dev = info->user_ptr[1];
3560 struct mpath_info pinfo;
3561 struct sk_buff *msg;
3562 u8 *dst = NULL;
3563 u8 next_hop[ETH_ALEN];
3564
3565 memset(&pinfo, 0, sizeof(pinfo));
3566
3567 if (!info->attrs[NL80211_ATTR_MAC])
3568 return -EINVAL;
3569
3570 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3571
3572 if (!rdev->ops->get_mpath)
3573 return -EOPNOTSUPP;
3574
3575 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3576 return -EOPNOTSUPP;
3577
3578 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
3579 if (err)
3580 return err;
3581
3582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3583 if (!msg)
3584 return -ENOMEM;
3585
3586 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
3587 dev, dst, next_hop, &pinfo) < 0) {
3588 nlmsg_free(msg);
3589 return -ENOBUFS;
3590 }
3591
3592 return genlmsg_reply(msg, info);
3593 }
3594
3595 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3596 {
3597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3598 struct net_device *dev = info->user_ptr[1];
3599 u8 *dst = NULL;
3600 u8 *next_hop = NULL;
3601
3602 if (!info->attrs[NL80211_ATTR_MAC])
3603 return -EINVAL;
3604
3605 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3606 return -EINVAL;
3607
3608 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3609 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3610
3611 if (!rdev->ops->change_mpath)
3612 return -EOPNOTSUPP;
3613
3614 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3615 return -EOPNOTSUPP;
3616
3617 return rdev_change_mpath(rdev, dev, dst, next_hop);
3618 }
3619
3620 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3621 {
3622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3623 struct net_device *dev = info->user_ptr[1];
3624 u8 *dst = NULL;
3625 u8 *next_hop = NULL;
3626
3627 if (!info->attrs[NL80211_ATTR_MAC])
3628 return -EINVAL;
3629
3630 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3631 return -EINVAL;
3632
3633 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3634 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3635
3636 if (!rdev->ops->add_mpath)
3637 return -EOPNOTSUPP;
3638
3639 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3640 return -EOPNOTSUPP;
3641
3642 return rdev_add_mpath(rdev, dev, dst, next_hop);
3643 }
3644
3645 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3646 {
3647 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3648 struct net_device *dev = info->user_ptr[1];
3649 u8 *dst = NULL;
3650
3651 if (info->attrs[NL80211_ATTR_MAC])
3652 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3653
3654 if (!rdev->ops->del_mpath)
3655 return -EOPNOTSUPP;
3656
3657 return rdev_del_mpath(rdev, dev, dst);
3658 }
3659
3660 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3661 {
3662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3663 struct net_device *dev = info->user_ptr[1];
3664 struct bss_parameters params;
3665
3666 memset(&params, 0, sizeof(params));
3667 /* default to not changing parameters */
3668 params.use_cts_prot = -1;
3669 params.use_short_preamble = -1;
3670 params.use_short_slot_time = -1;
3671 params.ap_isolate = -1;
3672 params.ht_opmode = -1;
3673 params.p2p_ctwindow = -1;
3674 params.p2p_opp_ps = -1;
3675
3676 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3677 params.use_cts_prot =
3678 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3679 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3680 params.use_short_preamble =
3681 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3682 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3683 params.use_short_slot_time =
3684 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3685 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3686 params.basic_rates =
3687 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3688 params.basic_rates_len =
3689 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3690 }
3691 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3692 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3693 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3694 params.ht_opmode =
3695 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3696
3697 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3698 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3699 return -EINVAL;
3700 params.p2p_ctwindow =
3701 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3702 if (params.p2p_ctwindow < 0)
3703 return -EINVAL;
3704 if (params.p2p_ctwindow != 0 &&
3705 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3706 return -EINVAL;
3707 }
3708
3709 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3710 u8 tmp;
3711
3712 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3713 return -EINVAL;
3714 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3715 if (tmp > 1)
3716 return -EINVAL;
3717 params.p2p_opp_ps = tmp;
3718 if (params.p2p_opp_ps &&
3719 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3720 return -EINVAL;
3721 }
3722
3723 if (!rdev->ops->change_bss)
3724 return -EOPNOTSUPP;
3725
3726 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3727 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3728 return -EOPNOTSUPP;
3729
3730 return rdev_change_bss(rdev, dev, &params);
3731 }
3732
3733 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3734 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3735 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3736 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3737 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3738 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3739 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3740 };
3741
3742 static int parse_reg_rule(struct nlattr *tb[],
3743 struct ieee80211_reg_rule *reg_rule)
3744 {
3745 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3746 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3747
3748 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3749 return -EINVAL;
3750 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3751 return -EINVAL;
3752 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3753 return -EINVAL;
3754 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3755 return -EINVAL;
3756 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3757 return -EINVAL;
3758
3759 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3760
3761 freq_range->start_freq_khz =
3762 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3763 freq_range->end_freq_khz =
3764 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3765 freq_range->max_bandwidth_khz =
3766 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3767
3768 power_rule->max_eirp =
3769 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3770
3771 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3772 power_rule->max_antenna_gain =
3773 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3774
3775 return 0;
3776 }
3777
3778 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3779 {
3780 int r;
3781 char *data = NULL;
3782 enum nl80211_user_reg_hint_type user_reg_hint_type;
3783
3784 /*
3785 * You should only get this when cfg80211 hasn't yet initialized
3786 * completely when built-in to the kernel right between the time
3787 * window between nl80211_init() and regulatory_init(), if that is
3788 * even possible.
3789 */
3790 mutex_lock(&cfg80211_mutex);
3791 if (unlikely(!cfg80211_regdomain)) {
3792 mutex_unlock(&cfg80211_mutex);
3793 return -EINPROGRESS;
3794 }
3795 mutex_unlock(&cfg80211_mutex);
3796
3797 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3798 return -EINVAL;
3799
3800 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3801
3802 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3803 user_reg_hint_type =
3804 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3805 else
3806 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3807
3808 switch (user_reg_hint_type) {
3809 case NL80211_USER_REG_HINT_USER:
3810 case NL80211_USER_REG_HINT_CELL_BASE:
3811 break;
3812 default:
3813 return -EINVAL;
3814 }
3815
3816 r = regulatory_hint_user(data, user_reg_hint_type);
3817
3818 return r;
3819 }
3820
3821 static int nl80211_get_mesh_config(struct sk_buff *skb,
3822 struct genl_info *info)
3823 {
3824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3825 struct net_device *dev = info->user_ptr[1];
3826 struct wireless_dev *wdev = dev->ieee80211_ptr;
3827 struct mesh_config cur_params;
3828 int err = 0;
3829 void *hdr;
3830 struct nlattr *pinfoattr;
3831 struct sk_buff *msg;
3832
3833 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3834 return -EOPNOTSUPP;
3835
3836 if (!rdev->ops->get_mesh_config)
3837 return -EOPNOTSUPP;
3838
3839 wdev_lock(wdev);
3840 /* If not connected, get default parameters */
3841 if (!wdev->mesh_id_len)
3842 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3843 else
3844 err = rdev_get_mesh_config(rdev, dev, &cur_params);
3845 wdev_unlock(wdev);
3846
3847 if (err)
3848 return err;
3849
3850 /* Draw up a netlink message to send back */
3851 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3852 if (!msg)
3853 return -ENOMEM;
3854 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3855 NL80211_CMD_GET_MESH_CONFIG);
3856 if (!hdr)
3857 goto out;
3858 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3859 if (!pinfoattr)
3860 goto nla_put_failure;
3861 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3862 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3863 cur_params.dot11MeshRetryTimeout) ||
3864 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3865 cur_params.dot11MeshConfirmTimeout) ||
3866 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3867 cur_params.dot11MeshHoldingTimeout) ||
3868 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3869 cur_params.dot11MeshMaxPeerLinks) ||
3870 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3871 cur_params.dot11MeshMaxRetries) ||
3872 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3873 cur_params.dot11MeshTTL) ||
3874 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3875 cur_params.element_ttl) ||
3876 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3877 cur_params.auto_open_plinks) ||
3878 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3879 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3880 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3881 cur_params.dot11MeshHWMPmaxPREQretries) ||
3882 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3883 cur_params.path_refresh_time) ||
3884 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3885 cur_params.min_discovery_timeout) ||
3886 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3887 cur_params.dot11MeshHWMPactivePathTimeout) ||
3888 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3889 cur_params.dot11MeshHWMPpreqMinInterval) ||
3890 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3891 cur_params.dot11MeshHWMPperrMinInterval) ||
3892 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3893 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3894 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3895 cur_params.dot11MeshHWMPRootMode) ||
3896 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3897 cur_params.dot11MeshHWMPRannInterval) ||
3898 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3899 cur_params.dot11MeshGateAnnouncementProtocol) ||
3900 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3901 cur_params.dot11MeshForwarding) ||
3902 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3903 cur_params.rssi_threshold) ||
3904 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3905 cur_params.ht_opmode) ||
3906 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3907 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3908 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3909 cur_params.dot11MeshHWMProotInterval) ||
3910 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3911 cur_params.dot11MeshHWMPconfirmationInterval))
3912 goto nla_put_failure;
3913 nla_nest_end(msg, pinfoattr);
3914 genlmsg_end(msg, hdr);
3915 return genlmsg_reply(msg, info);
3916
3917 nla_put_failure:
3918 genlmsg_cancel(msg, hdr);
3919 out:
3920 nlmsg_free(msg);
3921 return -ENOBUFS;
3922 }
3923
3924 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3925 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3926 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3927 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3928 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3929 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3930 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3931 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3932 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3933 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3934 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3935 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3936 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3937 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3938 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3939 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3940 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3941 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3942 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3943 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3944 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3945 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3946 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3947 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3948 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3949 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3950 };
3951
3952 static const struct nla_policy
3953 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3954 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3955 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3956 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3957 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3958 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3959 .len = IEEE80211_MAX_DATA_LEN },
3960 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3961 };
3962
3963 static int nl80211_parse_mesh_config(struct genl_info *info,
3964 struct mesh_config *cfg,
3965 u32 *mask_out)
3966 {
3967 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3968 u32 mask = 0;
3969
3970 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3971 do {\
3972 if (table[attr_num]) {\
3973 cfg->param = nla_fn(table[attr_num]); \
3974 mask |= (1 << (attr_num - 1)); \
3975 } \
3976 } while (0);\
3977
3978
3979 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3980 return -EINVAL;
3981 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3982 info->attrs[NL80211_ATTR_MESH_CONFIG],
3983 nl80211_meshconf_params_policy))
3984 return -EINVAL;
3985
3986 /* This makes sure that there aren't more than 32 mesh config
3987 * parameters (otherwise our bitfield scheme would not work.) */
3988 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3989
3990 /* Fill in the params struct */
3991 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3992 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3993 nla_get_u16);
3994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3995 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3996 nla_get_u16);
3997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3998 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3999 nla_get_u16);
4000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
4001 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4002 nla_get_u16);
4003 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
4004 mask, NL80211_MESHCONF_MAX_RETRIES,
4005 nla_get_u8);
4006 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
4007 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
4009 mask, NL80211_MESHCONF_ELEMENT_TTL,
4010 nla_get_u8);
4011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
4012 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4013 nla_get_u8);
4014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
4015 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4016 nla_get_u32);
4017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
4018 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4019 nla_get_u8);
4020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
4021 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4022 nla_get_u32);
4023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
4024 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4025 nla_get_u16);
4026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
4027 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4028 nla_get_u32);
4029 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4030 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4031 nla_get_u16);
4032 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4033 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4034 nla_get_u16);
4035 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4036 dot11MeshHWMPnetDiameterTraversalTime, mask,
4037 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4038 nla_get_u16);
4039 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
4040 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
4041 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
4042 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4043 nla_get_u16);
4044 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4045 dot11MeshGateAnnouncementProtocol, mask,
4046 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4047 nla_get_u8);
4048 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
4049 mask, NL80211_MESHCONF_FORWARDING,
4050 nla_get_u8);
4051 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
4052 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4053 nla_get_u32);
4054 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
4055 mask, NL80211_MESHCONF_HT_OPMODE,
4056 nla_get_u16);
4057 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4058 mask,
4059 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4060 nla_get_u32);
4061 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
4062 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4063 nla_get_u16);
4064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4065 dot11MeshHWMPconfirmationInterval, mask,
4066 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4067 nla_get_u16);
4068 if (mask_out)
4069 *mask_out = mask;
4070
4071 return 0;
4072
4073 #undef FILL_IN_MESH_PARAM_IF_SET
4074 }
4075
4076 static int nl80211_parse_mesh_setup(struct genl_info *info,
4077 struct mesh_setup *setup)
4078 {
4079 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4080
4081 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4082 return -EINVAL;
4083 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4084 info->attrs[NL80211_ATTR_MESH_SETUP],
4085 nl80211_mesh_setup_params_policy))
4086 return -EINVAL;
4087
4088 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4089 setup->sync_method =
4090 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4091 IEEE80211_SYNC_METHOD_VENDOR :
4092 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4093
4094 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4095 setup->path_sel_proto =
4096 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4097 IEEE80211_PATH_PROTOCOL_VENDOR :
4098 IEEE80211_PATH_PROTOCOL_HWMP;
4099
4100 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4101 setup->path_metric =
4102 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4103 IEEE80211_PATH_METRIC_VENDOR :
4104 IEEE80211_PATH_METRIC_AIRTIME;
4105
4106
4107 if (tb[NL80211_MESH_SETUP_IE]) {
4108 struct nlattr *ieattr =
4109 tb[NL80211_MESH_SETUP_IE];
4110 if (!is_valid_ie_attr(ieattr))
4111 return -EINVAL;
4112 setup->ie = nla_data(ieattr);
4113 setup->ie_len = nla_len(ieattr);
4114 }
4115 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4116 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4117
4118 return 0;
4119 }
4120
4121 static int nl80211_update_mesh_config(struct sk_buff *skb,
4122 struct genl_info *info)
4123 {
4124 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4125 struct net_device *dev = info->user_ptr[1];
4126 struct wireless_dev *wdev = dev->ieee80211_ptr;
4127 struct mesh_config cfg;
4128 u32 mask;
4129 int err;
4130
4131 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4132 return -EOPNOTSUPP;
4133
4134 if (!rdev->ops->update_mesh_config)
4135 return -EOPNOTSUPP;
4136
4137 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4138 if (err)
4139 return err;
4140
4141 wdev_lock(wdev);
4142 if (!wdev->mesh_id_len)
4143 err = -ENOLINK;
4144
4145 if (!err)
4146 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4147
4148 wdev_unlock(wdev);
4149
4150 return err;
4151 }
4152
4153 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4154 {
4155 struct sk_buff *msg;
4156 void *hdr = NULL;
4157 struct nlattr *nl_reg_rules;
4158 unsigned int i;
4159 int err = -EINVAL;
4160
4161 mutex_lock(&cfg80211_mutex);
4162
4163 if (!cfg80211_regdomain)
4164 goto out;
4165
4166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4167 if (!msg) {
4168 err = -ENOBUFS;
4169 goto out;
4170 }
4171
4172 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4173 NL80211_CMD_GET_REG);
4174 if (!hdr)
4175 goto put_failure;
4176
4177 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4178 cfg80211_regdomain->alpha2) ||
4179 (cfg80211_regdomain->dfs_region &&
4180 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4181 cfg80211_regdomain->dfs_region)))
4182 goto nla_put_failure;
4183
4184 if (reg_last_request_cell_base() &&
4185 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4186 NL80211_USER_REG_HINT_CELL_BASE))
4187 goto nla_put_failure;
4188
4189 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4190 if (!nl_reg_rules)
4191 goto nla_put_failure;
4192
4193 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4194 struct nlattr *nl_reg_rule;
4195 const struct ieee80211_reg_rule *reg_rule;
4196 const struct ieee80211_freq_range *freq_range;
4197 const struct ieee80211_power_rule *power_rule;
4198
4199 reg_rule = &cfg80211_regdomain->reg_rules[i];
4200 freq_range = &reg_rule->freq_range;
4201 power_rule = &reg_rule->power_rule;
4202
4203 nl_reg_rule = nla_nest_start(msg, i);
4204 if (!nl_reg_rule)
4205 goto nla_put_failure;
4206
4207 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4208 reg_rule->flags) ||
4209 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4210 freq_range->start_freq_khz) ||
4211 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4212 freq_range->end_freq_khz) ||
4213 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4214 freq_range->max_bandwidth_khz) ||
4215 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4216 power_rule->max_antenna_gain) ||
4217 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4218 power_rule->max_eirp))
4219 goto nla_put_failure;
4220
4221 nla_nest_end(msg, nl_reg_rule);
4222 }
4223
4224 nla_nest_end(msg, nl_reg_rules);
4225
4226 genlmsg_end(msg, hdr);
4227 err = genlmsg_reply(msg, info);
4228 goto out;
4229
4230 nla_put_failure:
4231 genlmsg_cancel(msg, hdr);
4232 put_failure:
4233 nlmsg_free(msg);
4234 err = -EMSGSIZE;
4235 out:
4236 mutex_unlock(&cfg80211_mutex);
4237 return err;
4238 }
4239
4240 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4241 {
4242 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4243 struct nlattr *nl_reg_rule;
4244 char *alpha2 = NULL;
4245 int rem_reg_rules = 0, r = 0;
4246 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4247 u8 dfs_region = 0;
4248 struct ieee80211_regdomain *rd = NULL;
4249
4250 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4251 return -EINVAL;
4252
4253 if (!info->attrs[NL80211_ATTR_REG_RULES])
4254 return -EINVAL;
4255
4256 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4257
4258 if (info->attrs[NL80211_ATTR_DFS_REGION])
4259 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4260
4261 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4262 rem_reg_rules) {
4263 num_rules++;
4264 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4265 return -EINVAL;
4266 }
4267
4268 mutex_lock(&cfg80211_mutex);
4269
4270 if (!reg_is_valid_request(alpha2)) {
4271 r = -EINVAL;
4272 goto bad_reg;
4273 }
4274
4275 size_of_regd = sizeof(struct ieee80211_regdomain) +
4276 (num_rules * sizeof(struct ieee80211_reg_rule));
4277
4278 rd = kzalloc(size_of_regd, GFP_KERNEL);
4279 if (!rd) {
4280 r = -ENOMEM;
4281 goto bad_reg;
4282 }
4283
4284 rd->n_reg_rules = num_rules;
4285 rd->alpha2[0] = alpha2[0];
4286 rd->alpha2[1] = alpha2[1];
4287
4288 /*
4289 * Disable DFS master mode if the DFS region was
4290 * not supported or known on this kernel.
4291 */
4292 if (reg_supported_dfs_region(dfs_region))
4293 rd->dfs_region = dfs_region;
4294
4295 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4296 rem_reg_rules) {
4297 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4298 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4299 reg_rule_policy);
4300 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4301 if (r)
4302 goto bad_reg;
4303
4304 rule_idx++;
4305
4306 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4307 r = -EINVAL;
4308 goto bad_reg;
4309 }
4310 }
4311
4312 BUG_ON(rule_idx != num_rules);
4313
4314 r = set_regdom(rd);
4315
4316 mutex_unlock(&cfg80211_mutex);
4317
4318 return r;
4319
4320 bad_reg:
4321 mutex_unlock(&cfg80211_mutex);
4322 kfree(rd);
4323 return r;
4324 }
4325
4326 static int validate_scan_freqs(struct nlattr *freqs)
4327 {
4328 struct nlattr *attr1, *attr2;
4329 int n_channels = 0, tmp1, tmp2;
4330
4331 nla_for_each_nested(attr1, freqs, tmp1) {
4332 n_channels++;
4333 /*
4334 * Some hardware has a limited channel list for
4335 * scanning, and it is pretty much nonsensical
4336 * to scan for a channel twice, so disallow that
4337 * and don't require drivers to check that the
4338 * channel list they get isn't longer than what
4339 * they can scan, as long as they can scan all
4340 * the channels they registered at once.
4341 */
4342 nla_for_each_nested(attr2, freqs, tmp2)
4343 if (attr1 != attr2 &&
4344 nla_get_u32(attr1) == nla_get_u32(attr2))
4345 return 0;
4346 }
4347
4348 return n_channels;
4349 }
4350
4351 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4352 {
4353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4354 struct wireless_dev *wdev = info->user_ptr[1];
4355 struct cfg80211_scan_request *request;
4356 struct nlattr *attr;
4357 struct wiphy *wiphy;
4358 int err, tmp, n_ssids = 0, n_channels, i;
4359 size_t ie_len;
4360
4361 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4362 return -EINVAL;
4363
4364 wiphy = &rdev->wiphy;
4365
4366 if (!rdev->ops->scan)
4367 return -EOPNOTSUPP;
4368
4369 if (rdev->scan_req)
4370 return -EBUSY;
4371
4372 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4373 n_channels = validate_scan_freqs(
4374 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4375 if (!n_channels)
4376 return -EINVAL;
4377 } else {
4378 enum ieee80211_band band;
4379 n_channels = 0;
4380
4381 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4382 if (wiphy->bands[band])
4383 n_channels += wiphy->bands[band]->n_channels;
4384 }
4385
4386 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4387 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4388 n_ssids++;
4389
4390 if (n_ssids > wiphy->max_scan_ssids)
4391 return -EINVAL;
4392
4393 if (info->attrs[NL80211_ATTR_IE])
4394 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4395 else
4396 ie_len = 0;
4397
4398 if (ie_len > wiphy->max_scan_ie_len)
4399 return -EINVAL;
4400
4401 request = kzalloc(sizeof(*request)
4402 + sizeof(*request->ssids) * n_ssids
4403 + sizeof(*request->channels) * n_channels
4404 + ie_len, GFP_KERNEL);
4405 if (!request)
4406 return -ENOMEM;
4407
4408 if (n_ssids)
4409 request->ssids = (void *)&request->channels[n_channels];
4410 request->n_ssids = n_ssids;
4411 if (ie_len) {
4412 if (request->ssids)
4413 request->ie = (void *)(request->ssids + n_ssids);
4414 else
4415 request->ie = (void *)(request->channels + n_channels);
4416 }
4417
4418 i = 0;
4419 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4420 /* user specified, bail out if channel not found */
4421 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4422 struct ieee80211_channel *chan;
4423
4424 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4425
4426 if (!chan) {
4427 err = -EINVAL;
4428 goto out_free;
4429 }
4430
4431 /* ignore disabled channels */
4432 if (chan->flags & IEEE80211_CHAN_DISABLED)
4433 continue;
4434
4435 request->channels[i] = chan;
4436 i++;
4437 }
4438 } else {
4439 enum ieee80211_band band;
4440
4441 /* all channels */
4442 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4443 int j;
4444 if (!wiphy->bands[band])
4445 continue;
4446 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4447 struct ieee80211_channel *chan;
4448
4449 chan = &wiphy->bands[band]->channels[j];
4450
4451 if (chan->flags & IEEE80211_CHAN_DISABLED)
4452 continue;
4453
4454 request->channels[i] = chan;
4455 i++;
4456 }
4457 }
4458 }
4459
4460 if (!i) {
4461 err = -EINVAL;
4462 goto out_free;
4463 }
4464
4465 request->n_channels = i;
4466
4467 i = 0;
4468 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4469 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4470 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4471 err = -EINVAL;
4472 goto out_free;
4473 }
4474 request->ssids[i].ssid_len = nla_len(attr);
4475 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4476 i++;
4477 }
4478 }
4479
4480 if (info->attrs[NL80211_ATTR_IE]) {
4481 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4482 memcpy((void *)request->ie,
4483 nla_data(info->attrs[NL80211_ATTR_IE]),
4484 request->ie_len);
4485 }
4486
4487 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4488 if (wiphy->bands[i])
4489 request->rates[i] =
4490 (1 << wiphy->bands[i]->n_bitrates) - 1;
4491
4492 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4493 nla_for_each_nested(attr,
4494 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4495 tmp) {
4496 enum ieee80211_band band = nla_type(attr);
4497
4498 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4499 err = -EINVAL;
4500 goto out_free;
4501 }
4502 err = ieee80211_get_ratemask(wiphy->bands[band],
4503 nla_data(attr),
4504 nla_len(attr),
4505 &request->rates[band]);
4506 if (err)
4507 goto out_free;
4508 }
4509 }
4510
4511 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4512 request->flags = nla_get_u32(
4513 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4514 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4515 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4516 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4517 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4518 err = -EOPNOTSUPP;
4519 goto out_free;
4520 }
4521 }
4522
4523 request->no_cck =
4524 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4525
4526 request->wdev = wdev;
4527 request->wiphy = &rdev->wiphy;
4528 request->scan_start = jiffies;
4529
4530 rdev->scan_req = request;
4531 err = rdev_scan(rdev, request);
4532
4533 if (!err) {
4534 nl80211_send_scan_start(rdev, wdev);
4535 if (wdev->netdev)
4536 dev_hold(wdev->netdev);
4537 } else {
4538 out_free:
4539 rdev->scan_req = NULL;
4540 kfree(request);
4541 }
4542
4543 return err;
4544 }
4545
4546 static int nl80211_start_sched_scan(struct sk_buff *skb,
4547 struct genl_info *info)
4548 {
4549 struct cfg80211_sched_scan_request *request;
4550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4551 struct net_device *dev = info->user_ptr[1];
4552 struct nlattr *attr;
4553 struct wiphy *wiphy;
4554 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4555 u32 interval;
4556 enum ieee80211_band band;
4557 size_t ie_len;
4558 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4559
4560 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4561 !rdev->ops->sched_scan_start)
4562 return -EOPNOTSUPP;
4563
4564 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4565 return -EINVAL;
4566
4567 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4568 return -EINVAL;
4569
4570 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4571 if (interval == 0)
4572 return -EINVAL;
4573
4574 wiphy = &rdev->wiphy;
4575
4576 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4577 n_channels = validate_scan_freqs(
4578 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4579 if (!n_channels)
4580 return -EINVAL;
4581 } else {
4582 n_channels = 0;
4583
4584 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4585 if (wiphy->bands[band])
4586 n_channels += wiphy->bands[band]->n_channels;
4587 }
4588
4589 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4590 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4591 tmp)
4592 n_ssids++;
4593
4594 if (n_ssids > wiphy->max_sched_scan_ssids)
4595 return -EINVAL;
4596
4597 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4598 nla_for_each_nested(attr,
4599 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4600 tmp)
4601 n_match_sets++;
4602
4603 if (n_match_sets > wiphy->max_match_sets)
4604 return -EINVAL;
4605
4606 if (info->attrs[NL80211_ATTR_IE])
4607 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4608 else
4609 ie_len = 0;
4610
4611 if (ie_len > wiphy->max_sched_scan_ie_len)
4612 return -EINVAL;
4613
4614 mutex_lock(&rdev->sched_scan_mtx);
4615
4616 if (rdev->sched_scan_req) {
4617 err = -EINPROGRESS;
4618 goto out;
4619 }
4620
4621 request = kzalloc(sizeof(*request)
4622 + sizeof(*request->ssids) * n_ssids
4623 + sizeof(*request->match_sets) * n_match_sets
4624 + sizeof(*request->channels) * n_channels
4625 + ie_len, GFP_KERNEL);
4626 if (!request) {
4627 err = -ENOMEM;
4628 goto out;
4629 }
4630
4631 if (n_ssids)
4632 request->ssids = (void *)&request->channels[n_channels];
4633 request->n_ssids = n_ssids;
4634 if (ie_len) {
4635 if (request->ssids)
4636 request->ie = (void *)(request->ssids + n_ssids);
4637 else
4638 request->ie = (void *)(request->channels + n_channels);
4639 }
4640
4641 if (n_match_sets) {
4642 if (request->ie)
4643 request->match_sets = (void *)(request->ie + ie_len);
4644 else if (request->ssids)
4645 request->match_sets =
4646 (void *)(request->ssids + n_ssids);
4647 else
4648 request->match_sets =
4649 (void *)(request->channels + n_channels);
4650 }
4651 request->n_match_sets = n_match_sets;
4652
4653 i = 0;
4654 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4655 /* user specified, bail out if channel not found */
4656 nla_for_each_nested(attr,
4657 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4658 tmp) {
4659 struct ieee80211_channel *chan;
4660
4661 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4662
4663 if (!chan) {
4664 err = -EINVAL;
4665 goto out_free;
4666 }
4667
4668 /* ignore disabled channels */
4669 if (chan->flags & IEEE80211_CHAN_DISABLED)
4670 continue;
4671
4672 request->channels[i] = chan;
4673 i++;
4674 }
4675 } else {
4676 /* all channels */
4677 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4678 int j;
4679 if (!wiphy->bands[band])
4680 continue;
4681 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4682 struct ieee80211_channel *chan;
4683
4684 chan = &wiphy->bands[band]->channels[j];
4685
4686 if (chan->flags & IEEE80211_CHAN_DISABLED)
4687 continue;
4688
4689 request->channels[i] = chan;
4690 i++;
4691 }
4692 }
4693 }
4694
4695 if (!i) {
4696 err = -EINVAL;
4697 goto out_free;
4698 }
4699
4700 request->n_channels = i;
4701
4702 i = 0;
4703 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4704 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4705 tmp) {
4706 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4707 err = -EINVAL;
4708 goto out_free;
4709 }
4710 request->ssids[i].ssid_len = nla_len(attr);
4711 memcpy(request->ssids[i].ssid, nla_data(attr),
4712 nla_len(attr));
4713 i++;
4714 }
4715 }
4716
4717 i = 0;
4718 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4719 nla_for_each_nested(attr,
4720 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4721 tmp) {
4722 struct nlattr *ssid, *rssi;
4723
4724 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4725 nla_data(attr), nla_len(attr),
4726 nl80211_match_policy);
4727 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4728 if (ssid) {
4729 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4730 err = -EINVAL;
4731 goto out_free;
4732 }
4733 memcpy(request->match_sets[i].ssid.ssid,
4734 nla_data(ssid), nla_len(ssid));
4735 request->match_sets[i].ssid.ssid_len =
4736 nla_len(ssid);
4737 }
4738 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4739 if (rssi)
4740 request->rssi_thold = nla_get_u32(rssi);
4741 else
4742 request->rssi_thold =
4743 NL80211_SCAN_RSSI_THOLD_OFF;
4744 i++;
4745 }
4746 }
4747
4748 if (info->attrs[NL80211_ATTR_IE]) {
4749 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4750 memcpy((void *)request->ie,
4751 nla_data(info->attrs[NL80211_ATTR_IE]),
4752 request->ie_len);
4753 }
4754
4755 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4756 request->flags = nla_get_u32(
4757 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4758 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4759 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4760 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4761 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4762 err = -EOPNOTSUPP;
4763 goto out_free;
4764 }
4765 }
4766
4767 request->dev = dev;
4768 request->wiphy = &rdev->wiphy;
4769 request->interval = interval;
4770 request->scan_start = jiffies;
4771
4772 err = rdev_sched_scan_start(rdev, dev, request);
4773 if (!err) {
4774 rdev->sched_scan_req = request;
4775 nl80211_send_sched_scan(rdev, dev,
4776 NL80211_CMD_START_SCHED_SCAN);
4777 goto out;
4778 }
4779
4780 out_free:
4781 kfree(request);
4782 out:
4783 mutex_unlock(&rdev->sched_scan_mtx);
4784 return err;
4785 }
4786
4787 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4788 struct genl_info *info)
4789 {
4790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4791 int err;
4792
4793 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4794 !rdev->ops->sched_scan_stop)
4795 return -EOPNOTSUPP;
4796
4797 mutex_lock(&rdev->sched_scan_mtx);
4798 err = __cfg80211_stop_sched_scan(rdev, false);
4799 mutex_unlock(&rdev->sched_scan_mtx);
4800
4801 return err;
4802 }
4803
4804 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4805 u32 seq, int flags,
4806 struct cfg80211_registered_device *rdev,
4807 struct wireless_dev *wdev,
4808 struct cfg80211_internal_bss *intbss)
4809 {
4810 struct cfg80211_bss *res = &intbss->pub;
4811 const struct cfg80211_bss_ies *ies;
4812 void *hdr;
4813 struct nlattr *bss;
4814
4815 ASSERT_WDEV_LOCK(wdev);
4816
4817 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
4818 NL80211_CMD_NEW_SCAN_RESULTS);
4819 if (!hdr)
4820 return -1;
4821
4822 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4823
4824 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4825 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4826 goto nla_put_failure;
4827
4828 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4829 if (!bss)
4830 goto nla_put_failure;
4831 if ((!is_zero_ether_addr(res->bssid) &&
4832 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
4833 goto nla_put_failure;
4834
4835 rcu_read_lock();
4836 ies = rcu_dereference(res->ies);
4837 if (ies && ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4838 ies->len, ies->data)) {
4839 rcu_read_unlock();
4840 goto nla_put_failure;
4841 }
4842 ies = rcu_dereference(res->beacon_ies);
4843 if (ies && ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
4844 ies->len, ies->data)) {
4845 rcu_read_unlock();
4846 goto nla_put_failure;
4847 }
4848 rcu_read_unlock();
4849
4850 if (res->tsf &&
4851 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4852 goto nla_put_failure;
4853 if (res->beacon_interval &&
4854 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4855 goto nla_put_failure;
4856 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4857 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4858 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4859 jiffies_to_msecs(jiffies - intbss->ts)))
4860 goto nla_put_failure;
4861
4862 switch (rdev->wiphy.signal_type) {
4863 case CFG80211_SIGNAL_TYPE_MBM:
4864 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4865 goto nla_put_failure;
4866 break;
4867 case CFG80211_SIGNAL_TYPE_UNSPEC:
4868 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4869 goto nla_put_failure;
4870 break;
4871 default:
4872 break;
4873 }
4874
4875 switch (wdev->iftype) {
4876 case NL80211_IFTYPE_P2P_CLIENT:
4877 case NL80211_IFTYPE_STATION:
4878 if (intbss == wdev->current_bss &&
4879 nla_put_u32(msg, NL80211_BSS_STATUS,
4880 NL80211_BSS_STATUS_ASSOCIATED))
4881 goto nla_put_failure;
4882 break;
4883 case NL80211_IFTYPE_ADHOC:
4884 if (intbss == wdev->current_bss &&
4885 nla_put_u32(msg, NL80211_BSS_STATUS,
4886 NL80211_BSS_STATUS_IBSS_JOINED))
4887 goto nla_put_failure;
4888 break;
4889 default:
4890 break;
4891 }
4892
4893 nla_nest_end(msg, bss);
4894
4895 return genlmsg_end(msg, hdr);
4896
4897 nla_put_failure:
4898 genlmsg_cancel(msg, hdr);
4899 return -EMSGSIZE;
4900 }
4901
4902 static int nl80211_dump_scan(struct sk_buff *skb,
4903 struct netlink_callback *cb)
4904 {
4905 struct cfg80211_registered_device *rdev;
4906 struct net_device *dev;
4907 struct cfg80211_internal_bss *scan;
4908 struct wireless_dev *wdev;
4909 int start = cb->args[1], idx = 0;
4910 int err;
4911
4912 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4913 if (err)
4914 return err;
4915
4916 wdev = dev->ieee80211_ptr;
4917
4918 wdev_lock(wdev);
4919 spin_lock_bh(&rdev->bss_lock);
4920 cfg80211_bss_expire(rdev);
4921
4922 cb->seq = rdev->bss_generation;
4923
4924 list_for_each_entry(scan, &rdev->bss_list, list) {
4925 if (++idx <= start)
4926 continue;
4927 if (nl80211_send_bss(skb, cb,
4928 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4929 rdev, wdev, scan) < 0) {
4930 idx--;
4931 break;
4932 }
4933 }
4934
4935 spin_unlock_bh(&rdev->bss_lock);
4936 wdev_unlock(wdev);
4937
4938 cb->args[1] = idx;
4939 nl80211_finish_netdev_dump(rdev);
4940
4941 return skb->len;
4942 }
4943
4944 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
4945 int flags, struct net_device *dev,
4946 struct survey_info *survey)
4947 {
4948 void *hdr;
4949 struct nlattr *infoattr;
4950
4951 hdr = nl80211hdr_put(msg, portid, seq, flags,
4952 NL80211_CMD_NEW_SURVEY_RESULTS);
4953 if (!hdr)
4954 return -ENOMEM;
4955
4956 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4957 goto nla_put_failure;
4958
4959 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4960 if (!infoattr)
4961 goto nla_put_failure;
4962
4963 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4964 survey->channel->center_freq))
4965 goto nla_put_failure;
4966
4967 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4968 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4969 goto nla_put_failure;
4970 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4971 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4972 goto nla_put_failure;
4973 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4974 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4975 survey->channel_time))
4976 goto nla_put_failure;
4977 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4978 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4979 survey->channel_time_busy))
4980 goto nla_put_failure;
4981 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4982 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4983 survey->channel_time_ext_busy))
4984 goto nla_put_failure;
4985 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4986 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4987 survey->channel_time_rx))
4988 goto nla_put_failure;
4989 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4990 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4991 survey->channel_time_tx))
4992 goto nla_put_failure;
4993
4994 nla_nest_end(msg, infoattr);
4995
4996 return genlmsg_end(msg, hdr);
4997
4998 nla_put_failure:
4999 genlmsg_cancel(msg, hdr);
5000 return -EMSGSIZE;
5001 }
5002
5003 static int nl80211_dump_survey(struct sk_buff *skb,
5004 struct netlink_callback *cb)
5005 {
5006 struct survey_info survey;
5007 struct cfg80211_registered_device *dev;
5008 struct net_device *netdev;
5009 int survey_idx = cb->args[1];
5010 int res;
5011
5012 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
5013 if (res)
5014 return res;
5015
5016 if (!dev->ops->dump_survey) {
5017 res = -EOPNOTSUPP;
5018 goto out_err;
5019 }
5020
5021 while (1) {
5022 struct ieee80211_channel *chan;
5023
5024 res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
5025 if (res == -ENOENT)
5026 break;
5027 if (res)
5028 goto out_err;
5029
5030 /* Survey without a channel doesn't make sense */
5031 if (!survey.channel) {
5032 res = -EINVAL;
5033 goto out;
5034 }
5035
5036 chan = ieee80211_get_channel(&dev->wiphy,
5037 survey.channel->center_freq);
5038 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5039 survey_idx++;
5040 continue;
5041 }
5042
5043 if (nl80211_send_survey(skb,
5044 NETLINK_CB(cb->skb).portid,
5045 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5046 netdev,
5047 &survey) < 0)
5048 goto out;
5049 survey_idx++;
5050 }
5051
5052 out:
5053 cb->args[1] = survey_idx;
5054 res = skb->len;
5055 out_err:
5056 nl80211_finish_netdev_dump(dev);
5057 return res;
5058 }
5059
5060 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5061 {
5062 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5063 NL80211_WPA_VERSION_2));
5064 }
5065
5066 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5067 {
5068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5069 struct net_device *dev = info->user_ptr[1];
5070 struct ieee80211_channel *chan;
5071 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5072 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5073 enum nl80211_auth_type auth_type;
5074 struct key_parse key;
5075 bool local_state_change;
5076
5077 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5078 return -EINVAL;
5079
5080 if (!info->attrs[NL80211_ATTR_MAC])
5081 return -EINVAL;
5082
5083 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5084 return -EINVAL;
5085
5086 if (!info->attrs[NL80211_ATTR_SSID])
5087 return -EINVAL;
5088
5089 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5090 return -EINVAL;
5091
5092 err = nl80211_parse_key(info, &key);
5093 if (err)
5094 return err;
5095
5096 if (key.idx >= 0) {
5097 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5098 return -EINVAL;
5099 if (!key.p.key || !key.p.key_len)
5100 return -EINVAL;
5101 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5102 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5103 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5104 key.p.key_len != WLAN_KEY_LEN_WEP104))
5105 return -EINVAL;
5106 if (key.idx > 4)
5107 return -EINVAL;
5108 } else {
5109 key.p.key_len = 0;
5110 key.p.key = NULL;
5111 }
5112
5113 if (key.idx >= 0) {
5114 int i;
5115 bool ok = false;
5116 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5117 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5118 ok = true;
5119 break;
5120 }
5121 }
5122 if (!ok)
5123 return -EINVAL;
5124 }
5125
5126 if (!rdev->ops->auth)
5127 return -EOPNOTSUPP;
5128
5129 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5130 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5131 return -EOPNOTSUPP;
5132
5133 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5134 chan = ieee80211_get_channel(&rdev->wiphy,
5135 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5136 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5137 return -EINVAL;
5138
5139 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5140 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5141
5142 if (info->attrs[NL80211_ATTR_IE]) {
5143 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5144 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5145 }
5146
5147 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5148 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5149 return -EINVAL;
5150
5151 if (auth_type == NL80211_AUTHTYPE_SAE &&
5152 !info->attrs[NL80211_ATTR_SAE_DATA])
5153 return -EINVAL;
5154
5155 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5156 if (auth_type != NL80211_AUTHTYPE_SAE)
5157 return -EINVAL;
5158 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5159 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5160 /* need to include at least Auth Transaction and Status Code */
5161 if (sae_data_len < 4)
5162 return -EINVAL;
5163 }
5164
5165 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5166
5167 /*
5168 * Since we no longer track auth state, ignore
5169 * requests to only change local state.
5170 */
5171 if (local_state_change)
5172 return 0;
5173
5174 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5175 ssid, ssid_len, ie, ie_len,
5176 key.p.key, key.p.key_len, key.idx,
5177 sae_data, sae_data_len);
5178 }
5179
5180 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5181 struct genl_info *info,
5182 struct cfg80211_crypto_settings *settings,
5183 int cipher_limit)
5184 {
5185 memset(settings, 0, sizeof(*settings));
5186
5187 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5188
5189 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5190 u16 proto;
5191 proto = nla_get_u16(
5192 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5193 settings->control_port_ethertype = cpu_to_be16(proto);
5194 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5195 proto != ETH_P_PAE)
5196 return -EINVAL;
5197 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5198 settings->control_port_no_encrypt = true;
5199 } else
5200 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5201
5202 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5203 void *data;
5204 int len, i;
5205
5206 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5207 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5208 settings->n_ciphers_pairwise = len / sizeof(u32);
5209
5210 if (len % sizeof(u32))
5211 return -EINVAL;
5212
5213 if (settings->n_ciphers_pairwise > cipher_limit)
5214 return -EINVAL;
5215
5216 memcpy(settings->ciphers_pairwise, data, len);
5217
5218 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5219 if (!cfg80211_supported_cipher_suite(
5220 &rdev->wiphy,
5221 settings->ciphers_pairwise[i]))
5222 return -EINVAL;
5223 }
5224
5225 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5226 settings->cipher_group =
5227 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5228 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5229 settings->cipher_group))
5230 return -EINVAL;
5231 }
5232
5233 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5234 settings->wpa_versions =
5235 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5236 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5237 return -EINVAL;
5238 }
5239
5240 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5241 void *data;
5242 int len;
5243
5244 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5245 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5246 settings->n_akm_suites = len / sizeof(u32);
5247
5248 if (len % sizeof(u32))
5249 return -EINVAL;
5250
5251 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5252 return -EINVAL;
5253
5254 memcpy(settings->akm_suites, data, len);
5255 }
5256
5257 return 0;
5258 }
5259
5260 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5261 {
5262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5263 struct net_device *dev = info->user_ptr[1];
5264 struct cfg80211_crypto_settings crypto;
5265 struct ieee80211_channel *chan;
5266 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5267 int err, ssid_len, ie_len = 0;
5268 bool use_mfp = false;
5269 u32 flags = 0;
5270 struct ieee80211_ht_cap *ht_capa = NULL;
5271 struct ieee80211_ht_cap *ht_capa_mask = NULL;
5272
5273 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5274 return -EINVAL;
5275
5276 if (!info->attrs[NL80211_ATTR_MAC] ||
5277 !info->attrs[NL80211_ATTR_SSID] ||
5278 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5279 return -EINVAL;
5280
5281 if (!rdev->ops->assoc)
5282 return -EOPNOTSUPP;
5283
5284 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5285 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5286 return -EOPNOTSUPP;
5287
5288 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5289
5290 chan = ieee80211_get_channel(&rdev->wiphy,
5291 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5292 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5293 return -EINVAL;
5294
5295 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5296 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5297
5298 if (info->attrs[NL80211_ATTR_IE]) {
5299 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5300 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5301 }
5302
5303 if (info->attrs[NL80211_ATTR_USE_MFP]) {
5304 enum nl80211_mfp mfp =
5305 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5306 if (mfp == NL80211_MFP_REQUIRED)
5307 use_mfp = true;
5308 else if (mfp != NL80211_MFP_NO)
5309 return -EINVAL;
5310 }
5311
5312 if (info->attrs[NL80211_ATTR_PREV_BSSID])
5313 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5314
5315 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5316 flags |= ASSOC_REQ_DISABLE_HT;
5317
5318 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5319 ht_capa_mask =
5320 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5321
5322 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5323 if (!ht_capa_mask)
5324 return -EINVAL;
5325 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5326 }
5327
5328 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5329 if (!err)
5330 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5331 ssid, ssid_len, ie, ie_len, use_mfp,
5332 &crypto, flags, ht_capa,
5333 ht_capa_mask);
5334
5335 return err;
5336 }
5337
5338 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5339 {
5340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341 struct net_device *dev = info->user_ptr[1];
5342 const u8 *ie = NULL, *bssid;
5343 int ie_len = 0;
5344 u16 reason_code;
5345 bool local_state_change;
5346
5347 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5348 return -EINVAL;
5349
5350 if (!info->attrs[NL80211_ATTR_MAC])
5351 return -EINVAL;
5352
5353 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5354 return -EINVAL;
5355
5356 if (!rdev->ops->deauth)
5357 return -EOPNOTSUPP;
5358
5359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5360 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5361 return -EOPNOTSUPP;
5362
5363 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5364
5365 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5366 if (reason_code == 0) {
5367 /* Reason Code 0 is reserved */
5368 return -EINVAL;
5369 }
5370
5371 if (info->attrs[NL80211_ATTR_IE]) {
5372 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5373 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5374 }
5375
5376 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5377
5378 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5379 local_state_change);
5380 }
5381
5382 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5383 {
5384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5385 struct net_device *dev = info->user_ptr[1];
5386 const u8 *ie = NULL, *bssid;
5387 int ie_len = 0;
5388 u16 reason_code;
5389 bool local_state_change;
5390
5391 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5392 return -EINVAL;
5393
5394 if (!info->attrs[NL80211_ATTR_MAC])
5395 return -EINVAL;
5396
5397 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5398 return -EINVAL;
5399
5400 if (!rdev->ops->disassoc)
5401 return -EOPNOTSUPP;
5402
5403 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5404 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5405 return -EOPNOTSUPP;
5406
5407 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5408
5409 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5410 if (reason_code == 0) {
5411 /* Reason Code 0 is reserved */
5412 return -EINVAL;
5413 }
5414
5415 if (info->attrs[NL80211_ATTR_IE]) {
5416 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5417 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5418 }
5419
5420 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5421
5422 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5423 local_state_change);
5424 }
5425
5426 static bool
5427 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5428 int mcast_rate[IEEE80211_NUM_BANDS],
5429 int rateval)
5430 {
5431 struct wiphy *wiphy = &rdev->wiphy;
5432 bool found = false;
5433 int band, i;
5434
5435 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5436 struct ieee80211_supported_band *sband;
5437
5438 sband = wiphy->bands[band];
5439 if (!sband)
5440 continue;
5441
5442 for (i = 0; i < sband->n_bitrates; i++) {
5443 if (sband->bitrates[i].bitrate == rateval) {
5444 mcast_rate[band] = i + 1;
5445 found = true;
5446 break;
5447 }
5448 }
5449 }
5450
5451 return found;
5452 }
5453
5454 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5455 {
5456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5457 struct net_device *dev = info->user_ptr[1];
5458 struct cfg80211_ibss_params ibss;
5459 struct wiphy *wiphy;
5460 struct cfg80211_cached_keys *connkeys = NULL;
5461 int err;
5462
5463 memset(&ibss, 0, sizeof(ibss));
5464
5465 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5466 return -EINVAL;
5467
5468 if (!info->attrs[NL80211_ATTR_SSID] ||
5469 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5470 return -EINVAL;
5471
5472 ibss.beacon_interval = 100;
5473
5474 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5475 ibss.beacon_interval =
5476 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5477 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5478 return -EINVAL;
5479 }
5480
5481 if (!rdev->ops->join_ibss)
5482 return -EOPNOTSUPP;
5483
5484 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5485 return -EOPNOTSUPP;
5486
5487 wiphy = &rdev->wiphy;
5488
5489 if (info->attrs[NL80211_ATTR_MAC]) {
5490 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5491
5492 if (!is_valid_ether_addr(ibss.bssid))
5493 return -EINVAL;
5494 }
5495 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5496 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5497
5498 if (info->attrs[NL80211_ATTR_IE]) {
5499 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5500 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5501 }
5502
5503 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
5504 if (err)
5505 return err;
5506
5507 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
5508 return -EINVAL;
5509
5510 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
5511 return -EINVAL;
5512 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
5513 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
5514 return -EINVAL;
5515
5516 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5517 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5518
5519 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5520 u8 *rates =
5521 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5522 int n_rates =
5523 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5524 struct ieee80211_supported_band *sband =
5525 wiphy->bands[ibss.chandef.chan->band];
5526
5527 err = ieee80211_get_ratemask(sband, rates, n_rates,
5528 &ibss.basic_rates);
5529 if (err)
5530 return err;
5531 }
5532
5533 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5534 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5535 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5536 return -EINVAL;
5537
5538 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5539 bool no_ht = false;
5540
5541 connkeys = nl80211_parse_connkeys(rdev,
5542 info->attrs[NL80211_ATTR_KEYS],
5543 &no_ht);
5544 if (IS_ERR(connkeys))
5545 return PTR_ERR(connkeys);
5546
5547 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
5548 no_ht) {
5549 kfree(connkeys);
5550 return -EINVAL;
5551 }
5552 }
5553
5554 ibss.control_port =
5555 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5556
5557 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5558 if (err)
5559 kfree(connkeys);
5560 return err;
5561 }
5562
5563 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5564 {
5565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5566 struct net_device *dev = info->user_ptr[1];
5567
5568 if (!rdev->ops->leave_ibss)
5569 return -EOPNOTSUPP;
5570
5571 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5572 return -EOPNOTSUPP;
5573
5574 return cfg80211_leave_ibss(rdev, dev, false);
5575 }
5576
5577 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
5578 {
5579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5580 struct net_device *dev = info->user_ptr[1];
5581 int mcast_rate[IEEE80211_NUM_BANDS];
5582 u32 nla_rate;
5583 int err;
5584
5585 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5586 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5587 return -EOPNOTSUPP;
5588
5589 if (!rdev->ops->set_mcast_rate)
5590 return -EOPNOTSUPP;
5591
5592 memset(mcast_rate, 0, sizeof(mcast_rate));
5593
5594 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
5595 return -EINVAL;
5596
5597 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
5598 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
5599 return -EINVAL;
5600
5601 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
5602
5603 return err;
5604 }
5605
5606
5607 #ifdef CONFIG_NL80211_TESTMODE
5608 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5609 .name = "testmode",
5610 };
5611
5612 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5613 {
5614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5615 int err;
5616
5617 if (!info->attrs[NL80211_ATTR_TESTDATA])
5618 return -EINVAL;
5619
5620 err = -EOPNOTSUPP;
5621 if (rdev->ops->testmode_cmd) {
5622 rdev->testmode_info = info;
5623 err = rdev_testmode_cmd(rdev,
5624 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5625 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5626 rdev->testmode_info = NULL;
5627 }
5628
5629 return err;
5630 }
5631
5632 static int nl80211_testmode_dump(struct sk_buff *skb,
5633 struct netlink_callback *cb)
5634 {
5635 struct cfg80211_registered_device *rdev;
5636 int err;
5637 long phy_idx;
5638 void *data = NULL;
5639 int data_len = 0;
5640
5641 if (cb->args[0]) {
5642 /*
5643 * 0 is a valid index, but not valid for args[0],
5644 * so we need to offset by 1.
5645 */
5646 phy_idx = cb->args[0] - 1;
5647 } else {
5648 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5649 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5650 nl80211_policy);
5651 if (err)
5652 return err;
5653
5654 mutex_lock(&cfg80211_mutex);
5655 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5656 nl80211_fam.attrbuf);
5657 if (IS_ERR(rdev)) {
5658 mutex_unlock(&cfg80211_mutex);
5659 return PTR_ERR(rdev);
5660 }
5661 phy_idx = rdev->wiphy_idx;
5662 rdev = NULL;
5663 mutex_unlock(&cfg80211_mutex);
5664
5665 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5666 cb->args[1] =
5667 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5668 }
5669
5670 if (cb->args[1]) {
5671 data = nla_data((void *)cb->args[1]);
5672 data_len = nla_len((void *)cb->args[1]);
5673 }
5674
5675 mutex_lock(&cfg80211_mutex);
5676 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5677 if (!rdev) {
5678 mutex_unlock(&cfg80211_mutex);
5679 return -ENOENT;
5680 }
5681 cfg80211_lock_rdev(rdev);
5682 mutex_unlock(&cfg80211_mutex);
5683
5684 if (!rdev->ops->testmode_dump) {
5685 err = -EOPNOTSUPP;
5686 goto out_err;
5687 }
5688
5689 while (1) {
5690 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
5691 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5692 NL80211_CMD_TESTMODE);
5693 struct nlattr *tmdata;
5694
5695 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5696 genlmsg_cancel(skb, hdr);
5697 break;
5698 }
5699
5700 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5701 if (!tmdata) {
5702 genlmsg_cancel(skb, hdr);
5703 break;
5704 }
5705 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
5706 nla_nest_end(skb, tmdata);
5707
5708 if (err == -ENOBUFS || err == -ENOENT) {
5709 genlmsg_cancel(skb, hdr);
5710 break;
5711 } else if (err) {
5712 genlmsg_cancel(skb, hdr);
5713 goto out_err;
5714 }
5715
5716 genlmsg_end(skb, hdr);
5717 }
5718
5719 err = skb->len;
5720 /* see above */
5721 cb->args[0] = phy_idx + 1;
5722 out_err:
5723 cfg80211_unlock_rdev(rdev);
5724 return err;
5725 }
5726
5727 static struct sk_buff *
5728 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5729 int approxlen, u32 portid, u32 seq, gfp_t gfp)
5730 {
5731 struct sk_buff *skb;
5732 void *hdr;
5733 struct nlattr *data;
5734
5735 skb = nlmsg_new(approxlen + 100, gfp);
5736 if (!skb)
5737 return NULL;
5738
5739 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
5740 if (!hdr) {
5741 kfree_skb(skb);
5742 return NULL;
5743 }
5744
5745 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5746 goto nla_put_failure;
5747 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5748
5749 ((void **)skb->cb)[0] = rdev;
5750 ((void **)skb->cb)[1] = hdr;
5751 ((void **)skb->cb)[2] = data;
5752
5753 return skb;
5754
5755 nla_put_failure:
5756 kfree_skb(skb);
5757 return NULL;
5758 }
5759
5760 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5761 int approxlen)
5762 {
5763 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5764
5765 if (WARN_ON(!rdev->testmode_info))
5766 return NULL;
5767
5768 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5769 rdev->testmode_info->snd_portid,
5770 rdev->testmode_info->snd_seq,
5771 GFP_KERNEL);
5772 }
5773 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5774
5775 int cfg80211_testmode_reply(struct sk_buff *skb)
5776 {
5777 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5778 void *hdr = ((void **)skb->cb)[1];
5779 struct nlattr *data = ((void **)skb->cb)[2];
5780
5781 if (WARN_ON(!rdev->testmode_info)) {
5782 kfree_skb(skb);
5783 return -EINVAL;
5784 }
5785
5786 nla_nest_end(skb, data);
5787 genlmsg_end(skb, hdr);
5788 return genlmsg_reply(skb, rdev->testmode_info);
5789 }
5790 EXPORT_SYMBOL(cfg80211_testmode_reply);
5791
5792 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5793 int approxlen, gfp_t gfp)
5794 {
5795 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5796
5797 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5798 }
5799 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5800
5801 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5802 {
5803 void *hdr = ((void **)skb->cb)[1];
5804 struct nlattr *data = ((void **)skb->cb)[2];
5805
5806 nla_nest_end(skb, data);
5807 genlmsg_end(skb, hdr);
5808 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5809 }
5810 EXPORT_SYMBOL(cfg80211_testmode_event);
5811 #endif
5812
5813 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5814 {
5815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5816 struct net_device *dev = info->user_ptr[1];
5817 struct cfg80211_connect_params connect;
5818 struct wiphy *wiphy;
5819 struct cfg80211_cached_keys *connkeys = NULL;
5820 int err;
5821
5822 memset(&connect, 0, sizeof(connect));
5823
5824 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5825 return -EINVAL;
5826
5827 if (!info->attrs[NL80211_ATTR_SSID] ||
5828 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5829 return -EINVAL;
5830
5831 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5832 connect.auth_type =
5833 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5834 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
5835 NL80211_CMD_CONNECT))
5836 return -EINVAL;
5837 } else
5838 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5839
5840 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5841
5842 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5843 NL80211_MAX_NR_CIPHER_SUITES);
5844 if (err)
5845 return err;
5846
5847 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5848 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5849 return -EOPNOTSUPP;
5850
5851 wiphy = &rdev->wiphy;
5852
5853 connect.bg_scan_period = -1;
5854 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5855 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5856 connect.bg_scan_period =
5857 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5858 }
5859
5860 if (info->attrs[NL80211_ATTR_MAC])
5861 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5862 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5863 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5864
5865 if (info->attrs[NL80211_ATTR_IE]) {
5866 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5867 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5868 }
5869
5870 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5871 connect.channel =
5872 ieee80211_get_channel(wiphy,
5873 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5874 if (!connect.channel ||
5875 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5876 return -EINVAL;
5877 }
5878
5879 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5880 connkeys = nl80211_parse_connkeys(rdev,
5881 info->attrs[NL80211_ATTR_KEYS], NULL);
5882 if (IS_ERR(connkeys))
5883 return PTR_ERR(connkeys);
5884 }
5885
5886 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5887 connect.flags |= ASSOC_REQ_DISABLE_HT;
5888
5889 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5890 memcpy(&connect.ht_capa_mask,
5891 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5892 sizeof(connect.ht_capa_mask));
5893
5894 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5895 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5896 kfree(connkeys);
5897 return -EINVAL;
5898 }
5899 memcpy(&connect.ht_capa,
5900 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5901 sizeof(connect.ht_capa));
5902 }
5903
5904 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5905 if (err)
5906 kfree(connkeys);
5907 return err;
5908 }
5909
5910 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5911 {
5912 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5913 struct net_device *dev = info->user_ptr[1];
5914 u16 reason;
5915
5916 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5917 reason = WLAN_REASON_DEAUTH_LEAVING;
5918 else
5919 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5920
5921 if (reason == 0)
5922 return -EINVAL;
5923
5924 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5925 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5926 return -EOPNOTSUPP;
5927
5928 return cfg80211_disconnect(rdev, dev, reason, true);
5929 }
5930
5931 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5932 {
5933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5934 struct net *net;
5935 int err;
5936 u32 pid;
5937
5938 if (!info->attrs[NL80211_ATTR_PID])
5939 return -EINVAL;
5940
5941 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5942
5943 net = get_net_ns_by_pid(pid);
5944 if (IS_ERR(net))
5945 return PTR_ERR(net);
5946
5947 err = 0;
5948
5949 /* check if anything to do */
5950 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5951 err = cfg80211_switch_netns(rdev, net);
5952
5953 put_net(net);
5954 return err;
5955 }
5956
5957 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5958 {
5959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5960 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5961 struct cfg80211_pmksa *pmksa) = NULL;
5962 struct net_device *dev = info->user_ptr[1];
5963 struct cfg80211_pmksa pmksa;
5964
5965 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5966
5967 if (!info->attrs[NL80211_ATTR_MAC])
5968 return -EINVAL;
5969
5970 if (!info->attrs[NL80211_ATTR_PMKID])
5971 return -EINVAL;
5972
5973 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5974 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5975
5976 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5977 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5978 return -EOPNOTSUPP;
5979
5980 switch (info->genlhdr->cmd) {
5981 case NL80211_CMD_SET_PMKSA:
5982 rdev_ops = rdev->ops->set_pmksa;
5983 break;
5984 case NL80211_CMD_DEL_PMKSA:
5985 rdev_ops = rdev->ops->del_pmksa;
5986 break;
5987 default:
5988 WARN_ON(1);
5989 break;
5990 }
5991
5992 if (!rdev_ops)
5993 return -EOPNOTSUPP;
5994
5995 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5996 }
5997
5998 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5999 {
6000 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6001 struct net_device *dev = info->user_ptr[1];
6002
6003 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6004 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6005 return -EOPNOTSUPP;
6006
6007 if (!rdev->ops->flush_pmksa)
6008 return -EOPNOTSUPP;
6009
6010 return rdev_flush_pmksa(rdev, dev);
6011 }
6012
6013 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6014 {
6015 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6016 struct net_device *dev = info->user_ptr[1];
6017 u8 action_code, dialog_token;
6018 u16 status_code;
6019 u8 *peer;
6020
6021 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6022 !rdev->ops->tdls_mgmt)
6023 return -EOPNOTSUPP;
6024
6025 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6026 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6027 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6028 !info->attrs[NL80211_ATTR_IE] ||
6029 !info->attrs[NL80211_ATTR_MAC])
6030 return -EINVAL;
6031
6032 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6033 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6034 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6035 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6036
6037 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6038 dialog_token, status_code,
6039 nla_data(info->attrs[NL80211_ATTR_IE]),
6040 nla_len(info->attrs[NL80211_ATTR_IE]));
6041 }
6042
6043 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6044 {
6045 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6046 struct net_device *dev = info->user_ptr[1];
6047 enum nl80211_tdls_operation operation;
6048 u8 *peer;
6049
6050 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6051 !rdev->ops->tdls_oper)
6052 return -EOPNOTSUPP;
6053
6054 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6055 !info->attrs[NL80211_ATTR_MAC])
6056 return -EINVAL;
6057
6058 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6059 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6060
6061 return rdev_tdls_oper(rdev, dev, peer, operation);
6062 }
6063
6064 static int nl80211_remain_on_channel(struct sk_buff *skb,
6065 struct genl_info *info)
6066 {
6067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068 struct wireless_dev *wdev = info->user_ptr[1];
6069 struct cfg80211_chan_def chandef;
6070 struct sk_buff *msg;
6071 void *hdr;
6072 u64 cookie;
6073 u32 duration;
6074 int err;
6075
6076 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6077 !info->attrs[NL80211_ATTR_DURATION])
6078 return -EINVAL;
6079
6080 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6081
6082 if (!rdev->ops->remain_on_channel ||
6083 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6084 return -EOPNOTSUPP;
6085
6086 /*
6087 * We should be on that channel for at least a minimum amount of
6088 * time (10ms) but no longer than the driver supports.
6089 */
6090 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6091 duration > rdev->wiphy.max_remain_on_channel_duration)
6092 return -EINVAL;
6093
6094 err = nl80211_parse_chandef(rdev, info, &chandef);
6095 if (err)
6096 return err;
6097
6098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6099 if (!msg)
6100 return -ENOMEM;
6101
6102 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6103 NL80211_CMD_REMAIN_ON_CHANNEL);
6104
6105 if (IS_ERR(hdr)) {
6106 err = PTR_ERR(hdr);
6107 goto free_msg;
6108 }
6109
6110 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6111 duration, &cookie);
6112
6113 if (err)
6114 goto free_msg;
6115
6116 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6117 goto nla_put_failure;
6118
6119 genlmsg_end(msg, hdr);
6120
6121 return genlmsg_reply(msg, info);
6122
6123 nla_put_failure:
6124 err = -ENOBUFS;
6125 free_msg:
6126 nlmsg_free(msg);
6127 return err;
6128 }
6129
6130 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6131 struct genl_info *info)
6132 {
6133 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6134 struct wireless_dev *wdev = info->user_ptr[1];
6135 u64 cookie;
6136
6137 if (!info->attrs[NL80211_ATTR_COOKIE])
6138 return -EINVAL;
6139
6140 if (!rdev->ops->cancel_remain_on_channel)
6141 return -EOPNOTSUPP;
6142
6143 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6144
6145 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6146 }
6147
6148 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6149 u8 *rates, u8 rates_len)
6150 {
6151 u8 i;
6152 u32 mask = 0;
6153
6154 for (i = 0; i < rates_len; i++) {
6155 int rate = (rates[i] & 0x7f) * 5;
6156 int ridx;
6157 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6158 struct ieee80211_rate *srate =
6159 &sband->bitrates[ridx];
6160 if (rate == srate->bitrate) {
6161 mask |= 1 << ridx;
6162 break;
6163 }
6164 }
6165 if (ridx == sband->n_bitrates)
6166 return 0; /* rate not found */
6167 }
6168
6169 return mask;
6170 }
6171
6172 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6173 u8 *rates, u8 rates_len,
6174 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6175 {
6176 u8 i;
6177
6178 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6179
6180 for (i = 0; i < rates_len; i++) {
6181 int ridx, rbit;
6182
6183 ridx = rates[i] / 8;
6184 rbit = BIT(rates[i] % 8);
6185
6186 /* check validity */
6187 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6188 return false;
6189
6190 /* check availability */
6191 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6192 mcs[ridx] |= rbit;
6193 else
6194 return false;
6195 }
6196
6197 return true;
6198 }
6199
6200 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6201 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6202 .len = NL80211_MAX_SUPP_RATES },
6203 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6204 .len = NL80211_MAX_SUPP_HT_RATES },
6205 };
6206
6207 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6208 struct genl_info *info)
6209 {
6210 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6212 struct cfg80211_bitrate_mask mask;
6213 int rem, i;
6214 struct net_device *dev = info->user_ptr[1];
6215 struct nlattr *tx_rates;
6216 struct ieee80211_supported_band *sband;
6217
6218 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
6219 return -EINVAL;
6220
6221 if (!rdev->ops->set_bitrate_mask)
6222 return -EOPNOTSUPP;
6223
6224 memset(&mask, 0, sizeof(mask));
6225 /* Default to all rates enabled */
6226 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
6227 sband = rdev->wiphy.bands[i];
6228 mask.control[i].legacy =
6229 sband ? (1 << sband->n_bitrates) - 1 : 0;
6230 if (sband)
6231 memcpy(mask.control[i].mcs,
6232 sband->ht_cap.mcs.rx_mask,
6233 sizeof(mask.control[i].mcs));
6234 else
6235 memset(mask.control[i].mcs, 0,
6236 sizeof(mask.control[i].mcs));
6237 }
6238
6239 /*
6240 * The nested attribute uses enum nl80211_band as the index. This maps
6241 * directly to the enum ieee80211_band values used in cfg80211.
6242 */
6243 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6244 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6245 {
6246 enum ieee80211_band band = nla_type(tx_rates);
6247 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6248 return -EINVAL;
6249 sband = rdev->wiphy.bands[band];
6250 if (sband == NULL)
6251 return -EINVAL;
6252 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6253 nla_len(tx_rates), nl80211_txattr_policy);
6254 if (tb[NL80211_TXRATE_LEGACY]) {
6255 mask.control[band].legacy = rateset_to_mask(
6256 sband,
6257 nla_data(tb[NL80211_TXRATE_LEGACY]),
6258 nla_len(tb[NL80211_TXRATE_LEGACY]));
6259 if ((mask.control[band].legacy == 0) &&
6260 nla_len(tb[NL80211_TXRATE_LEGACY]))
6261 return -EINVAL;
6262 }
6263 if (tb[NL80211_TXRATE_MCS]) {
6264 if (!ht_rateset_to_mask(
6265 sband,
6266 nla_data(tb[NL80211_TXRATE_MCS]),
6267 nla_len(tb[NL80211_TXRATE_MCS]),
6268 mask.control[band].mcs))
6269 return -EINVAL;
6270 }
6271
6272 if (mask.control[band].legacy == 0) {
6273 /* don't allow empty legacy rates if HT
6274 * is not even supported. */
6275 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6276 return -EINVAL;
6277
6278 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6279 if (mask.control[band].mcs[i])
6280 break;
6281
6282 /* legacy and mcs rates may not be both empty */
6283 if (i == IEEE80211_HT_MCS_MASK_LEN)
6284 return -EINVAL;
6285 }
6286 }
6287
6288 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
6289 }
6290
6291 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6292 {
6293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6294 struct wireless_dev *wdev = info->user_ptr[1];
6295 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6296
6297 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6298 return -EINVAL;
6299
6300 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6301 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6302
6303 switch (wdev->iftype) {
6304 case NL80211_IFTYPE_STATION:
6305 case NL80211_IFTYPE_ADHOC:
6306 case NL80211_IFTYPE_P2P_CLIENT:
6307 case NL80211_IFTYPE_AP:
6308 case NL80211_IFTYPE_AP_VLAN:
6309 case NL80211_IFTYPE_MESH_POINT:
6310 case NL80211_IFTYPE_P2P_GO:
6311 case NL80211_IFTYPE_P2P_DEVICE:
6312 break;
6313 default:
6314 return -EOPNOTSUPP;
6315 }
6316
6317 /* not much point in registering if we can't reply */
6318 if (!rdev->ops->mgmt_tx)
6319 return -EOPNOTSUPP;
6320
6321 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
6322 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6323 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6324 }
6325
6326 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
6327 {
6328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6329 struct wireless_dev *wdev = info->user_ptr[1];
6330 struct cfg80211_chan_def chandef;
6331 int err;
6332 void *hdr = NULL;
6333 u64 cookie;
6334 struct sk_buff *msg = NULL;
6335 unsigned int wait = 0;
6336 bool offchan, no_cck, dont_wait_for_ack;
6337
6338 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6339
6340 if (!info->attrs[NL80211_ATTR_FRAME])
6341 return -EINVAL;
6342
6343 if (!rdev->ops->mgmt_tx)
6344 return -EOPNOTSUPP;
6345
6346 switch (wdev->iftype) {
6347 case NL80211_IFTYPE_STATION:
6348 case NL80211_IFTYPE_ADHOC:
6349 case NL80211_IFTYPE_P2P_CLIENT:
6350 case NL80211_IFTYPE_AP:
6351 case NL80211_IFTYPE_AP_VLAN:
6352 case NL80211_IFTYPE_MESH_POINT:
6353 case NL80211_IFTYPE_P2P_GO:
6354 case NL80211_IFTYPE_P2P_DEVICE:
6355 break;
6356 default:
6357 return -EOPNOTSUPP;
6358 }
6359
6360 if (info->attrs[NL80211_ATTR_DURATION]) {
6361 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6362 return -EINVAL;
6363 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6364
6365 /*
6366 * We should wait on the channel for at least a minimum amount
6367 * of time (10ms) but no longer than the driver supports.
6368 */
6369 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6370 wait > rdev->wiphy.max_remain_on_channel_duration)
6371 return -EINVAL;
6372
6373 }
6374
6375 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6376
6377 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6378 return -EINVAL;
6379
6380 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6381
6382 err = nl80211_parse_chandef(rdev, info, &chandef);
6383 if (err)
6384 return err;
6385
6386 if (!dont_wait_for_ack) {
6387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6388 if (!msg)
6389 return -ENOMEM;
6390
6391 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6392 NL80211_CMD_FRAME);
6393
6394 if (IS_ERR(hdr)) {
6395 err = PTR_ERR(hdr);
6396 goto free_msg;
6397 }
6398 }
6399
6400 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
6401 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6402 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6403 no_cck, dont_wait_for_ack, &cookie);
6404 if (err)
6405 goto free_msg;
6406
6407 if (msg) {
6408 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6409 goto nla_put_failure;
6410
6411 genlmsg_end(msg, hdr);
6412 return genlmsg_reply(msg, info);
6413 }
6414
6415 return 0;
6416
6417 nla_put_failure:
6418 err = -ENOBUFS;
6419 free_msg:
6420 nlmsg_free(msg);
6421 return err;
6422 }
6423
6424 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6425 {
6426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6427 struct wireless_dev *wdev = info->user_ptr[1];
6428 u64 cookie;
6429
6430 if (!info->attrs[NL80211_ATTR_COOKIE])
6431 return -EINVAL;
6432
6433 if (!rdev->ops->mgmt_tx_cancel_wait)
6434 return -EOPNOTSUPP;
6435
6436 switch (wdev->iftype) {
6437 case NL80211_IFTYPE_STATION:
6438 case NL80211_IFTYPE_ADHOC:
6439 case NL80211_IFTYPE_P2P_CLIENT:
6440 case NL80211_IFTYPE_AP:
6441 case NL80211_IFTYPE_AP_VLAN:
6442 case NL80211_IFTYPE_P2P_GO:
6443 case NL80211_IFTYPE_P2P_DEVICE:
6444 break;
6445 default:
6446 return -EOPNOTSUPP;
6447 }
6448
6449 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6450
6451 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
6452 }
6453
6454 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6455 {
6456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6457 struct wireless_dev *wdev;
6458 struct net_device *dev = info->user_ptr[1];
6459 u8 ps_state;
6460 bool state;
6461 int err;
6462
6463 if (!info->attrs[NL80211_ATTR_PS_STATE])
6464 return -EINVAL;
6465
6466 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6467
6468 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6469 return -EINVAL;
6470
6471 wdev = dev->ieee80211_ptr;
6472
6473 if (!rdev->ops->set_power_mgmt)
6474 return -EOPNOTSUPP;
6475
6476 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6477
6478 if (state == wdev->ps)
6479 return 0;
6480
6481 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
6482 if (!err)
6483 wdev->ps = state;
6484 return err;
6485 }
6486
6487 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6488 {
6489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6490 enum nl80211_ps_state ps_state;
6491 struct wireless_dev *wdev;
6492 struct net_device *dev = info->user_ptr[1];
6493 struct sk_buff *msg;
6494 void *hdr;
6495 int err;
6496
6497 wdev = dev->ieee80211_ptr;
6498
6499 if (!rdev->ops->set_power_mgmt)
6500 return -EOPNOTSUPP;
6501
6502 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6503 if (!msg)
6504 return -ENOMEM;
6505
6506 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6507 NL80211_CMD_GET_POWER_SAVE);
6508 if (!hdr) {
6509 err = -ENOBUFS;
6510 goto free_msg;
6511 }
6512
6513 if (wdev->ps)
6514 ps_state = NL80211_PS_ENABLED;
6515 else
6516 ps_state = NL80211_PS_DISABLED;
6517
6518 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6519 goto nla_put_failure;
6520
6521 genlmsg_end(msg, hdr);
6522 return genlmsg_reply(msg, info);
6523
6524 nla_put_failure:
6525 err = -ENOBUFS;
6526 free_msg:
6527 nlmsg_free(msg);
6528 return err;
6529 }
6530
6531 static struct nla_policy
6532 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6533 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6534 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6535 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6536 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6537 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6538 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6539 };
6540
6541 static int nl80211_set_cqm_txe(struct genl_info *info,
6542 u32 rate, u32 pkts, u32 intvl)
6543 {
6544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6545 struct wireless_dev *wdev;
6546 struct net_device *dev = info->user_ptr[1];
6547
6548 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
6549 return -EINVAL;
6550
6551 wdev = dev->ieee80211_ptr;
6552
6553 if (!rdev->ops->set_cqm_txe_config)
6554 return -EOPNOTSUPP;
6555
6556 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6557 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6558 return -EOPNOTSUPP;
6559
6560 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
6561 }
6562
6563 static int nl80211_set_cqm_rssi(struct genl_info *info,
6564 s32 threshold, u32 hysteresis)
6565 {
6566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6567 struct wireless_dev *wdev;
6568 struct net_device *dev = info->user_ptr[1];
6569
6570 if (threshold > 0)
6571 return -EINVAL;
6572
6573 wdev = dev->ieee80211_ptr;
6574
6575 if (!rdev->ops->set_cqm_rssi_config)
6576 return -EOPNOTSUPP;
6577
6578 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6579 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6580 return -EOPNOTSUPP;
6581
6582 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
6583 }
6584
6585 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6586 {
6587 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6588 struct nlattr *cqm;
6589 int err;
6590
6591 cqm = info->attrs[NL80211_ATTR_CQM];
6592 if (!cqm) {
6593 err = -EINVAL;
6594 goto out;
6595 }
6596
6597 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6598 nl80211_attr_cqm_policy);
6599 if (err)
6600 goto out;
6601
6602 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6603 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6604 s32 threshold;
6605 u32 hysteresis;
6606 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6607 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6608 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6609 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6610 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6611 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6612 u32 rate, pkts, intvl;
6613 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6614 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6615 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6616 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6617 } else
6618 err = -EINVAL;
6619
6620 out:
6621 return err;
6622 }
6623
6624 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6625 {
6626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6627 struct net_device *dev = info->user_ptr[1];
6628 struct mesh_config cfg;
6629 struct mesh_setup setup;
6630 int err;
6631
6632 /* start with default */
6633 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6634 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6635
6636 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6637 /* and parse parameters if given */
6638 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6639 if (err)
6640 return err;
6641 }
6642
6643 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6644 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6645 return -EINVAL;
6646
6647 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6648 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6649
6650 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6651 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6652 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6653 return -EINVAL;
6654
6655 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6656 /* parse additional setup parameters if given */
6657 err = nl80211_parse_mesh_setup(info, &setup);
6658 if (err)
6659 return err;
6660 }
6661
6662 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6663 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
6664 if (err)
6665 return err;
6666 } else {
6667 /* cfg80211_join_mesh() will sort it out */
6668 setup.chandef.chan = NULL;
6669 }
6670
6671 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6672 }
6673
6674 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6675 {
6676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6677 struct net_device *dev = info->user_ptr[1];
6678
6679 return cfg80211_leave_mesh(rdev, dev);
6680 }
6681
6682 #ifdef CONFIG_PM
6683 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6684 {
6685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6686 struct sk_buff *msg;
6687 void *hdr;
6688
6689 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6690 return -EOPNOTSUPP;
6691
6692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6693 if (!msg)
6694 return -ENOMEM;
6695
6696 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6697 NL80211_CMD_GET_WOWLAN);
6698 if (!hdr)
6699 goto nla_put_failure;
6700
6701 if (rdev->wowlan) {
6702 struct nlattr *nl_wowlan;
6703
6704 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6705 if (!nl_wowlan)
6706 goto nla_put_failure;
6707
6708 if ((rdev->wowlan->any &&
6709 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6710 (rdev->wowlan->disconnect &&
6711 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6712 (rdev->wowlan->magic_pkt &&
6713 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6714 (rdev->wowlan->gtk_rekey_failure &&
6715 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6716 (rdev->wowlan->eap_identity_req &&
6717 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6718 (rdev->wowlan->four_way_handshake &&
6719 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6720 (rdev->wowlan->rfkill_release &&
6721 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6722 goto nla_put_failure;
6723 if (rdev->wowlan->n_patterns) {
6724 struct nlattr *nl_pats, *nl_pat;
6725 int i, pat_len;
6726
6727 nl_pats = nla_nest_start(msg,
6728 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6729 if (!nl_pats)
6730 goto nla_put_failure;
6731
6732 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6733 nl_pat = nla_nest_start(msg, i + 1);
6734 if (!nl_pat)
6735 goto nla_put_failure;
6736 pat_len = rdev->wowlan->patterns[i].pattern_len;
6737 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6738 DIV_ROUND_UP(pat_len, 8),
6739 rdev->wowlan->patterns[i].mask) ||
6740 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6741 pat_len,
6742 rdev->wowlan->patterns[i].pattern))
6743 goto nla_put_failure;
6744 nla_nest_end(msg, nl_pat);
6745 }
6746 nla_nest_end(msg, nl_pats);
6747 }
6748
6749 nla_nest_end(msg, nl_wowlan);
6750 }
6751
6752 genlmsg_end(msg, hdr);
6753 return genlmsg_reply(msg, info);
6754
6755 nla_put_failure:
6756 nlmsg_free(msg);
6757 return -ENOBUFS;
6758 }
6759
6760 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6761 {
6762 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6763 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6764 struct cfg80211_wowlan new_triggers = {};
6765 struct cfg80211_wowlan *ntrig;
6766 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6767 int err, i;
6768 bool prev_enabled = rdev->wowlan;
6769
6770 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6771 return -EOPNOTSUPP;
6772
6773 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6774 cfg80211_rdev_free_wowlan(rdev);
6775 rdev->wowlan = NULL;
6776 goto set_wakeup;
6777 }
6778
6779 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6780 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6781 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6782 nl80211_wowlan_policy);
6783 if (err)
6784 return err;
6785
6786 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6787 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6788 return -EINVAL;
6789 new_triggers.any = true;
6790 }
6791
6792 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6793 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6794 return -EINVAL;
6795 new_triggers.disconnect = true;
6796 }
6797
6798 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6799 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6800 return -EINVAL;
6801 new_triggers.magic_pkt = true;
6802 }
6803
6804 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6805 return -EINVAL;
6806
6807 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6808 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6809 return -EINVAL;
6810 new_triggers.gtk_rekey_failure = true;
6811 }
6812
6813 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6814 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6815 return -EINVAL;
6816 new_triggers.eap_identity_req = true;
6817 }
6818
6819 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6820 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6821 return -EINVAL;
6822 new_triggers.four_way_handshake = true;
6823 }
6824
6825 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6826 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6827 return -EINVAL;
6828 new_triggers.rfkill_release = true;
6829 }
6830
6831 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6832 struct nlattr *pat;
6833 int n_patterns = 0;
6834 int rem, pat_len, mask_len;
6835 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6836
6837 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6838 rem)
6839 n_patterns++;
6840 if (n_patterns > wowlan->n_patterns)
6841 return -EINVAL;
6842
6843 new_triggers.patterns = kcalloc(n_patterns,
6844 sizeof(new_triggers.patterns[0]),
6845 GFP_KERNEL);
6846 if (!new_triggers.patterns)
6847 return -ENOMEM;
6848
6849 new_triggers.n_patterns = n_patterns;
6850 i = 0;
6851
6852 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6853 rem) {
6854 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6855 nla_data(pat), nla_len(pat), NULL);
6856 err = -EINVAL;
6857 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6858 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6859 goto error;
6860 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6861 mask_len = DIV_ROUND_UP(pat_len, 8);
6862 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6863 mask_len)
6864 goto error;
6865 if (pat_len > wowlan->pattern_max_len ||
6866 pat_len < wowlan->pattern_min_len)
6867 goto error;
6868
6869 new_triggers.patterns[i].mask =
6870 kmalloc(mask_len + pat_len, GFP_KERNEL);
6871 if (!new_triggers.patterns[i].mask) {
6872 err = -ENOMEM;
6873 goto error;
6874 }
6875 new_triggers.patterns[i].pattern =
6876 new_triggers.patterns[i].mask + mask_len;
6877 memcpy(new_triggers.patterns[i].mask,
6878 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6879 mask_len);
6880 new_triggers.patterns[i].pattern_len = pat_len;
6881 memcpy(new_triggers.patterns[i].pattern,
6882 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6883 pat_len);
6884 i++;
6885 }
6886 }
6887
6888 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6889 if (!ntrig) {
6890 err = -ENOMEM;
6891 goto error;
6892 }
6893 cfg80211_rdev_free_wowlan(rdev);
6894 rdev->wowlan = ntrig;
6895
6896 set_wakeup:
6897 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6898 rdev_set_wakeup(rdev, rdev->wowlan);
6899
6900 return 0;
6901 error:
6902 for (i = 0; i < new_triggers.n_patterns; i++)
6903 kfree(new_triggers.patterns[i].mask);
6904 kfree(new_triggers.patterns);
6905 return err;
6906 }
6907 #endif
6908
6909 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6910 {
6911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6912 struct net_device *dev = info->user_ptr[1];
6913 struct wireless_dev *wdev = dev->ieee80211_ptr;
6914 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6915 struct cfg80211_gtk_rekey_data rekey_data;
6916 int err;
6917
6918 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6919 return -EINVAL;
6920
6921 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6922 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6923 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6924 nl80211_rekey_policy);
6925 if (err)
6926 return err;
6927
6928 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6929 return -ERANGE;
6930 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6931 return -ERANGE;
6932 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6933 return -ERANGE;
6934
6935 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6936 NL80211_KEK_LEN);
6937 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6938 NL80211_KCK_LEN);
6939 memcpy(rekey_data.replay_ctr,
6940 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6941 NL80211_REPLAY_CTR_LEN);
6942
6943 wdev_lock(wdev);
6944 if (!wdev->current_bss) {
6945 err = -ENOTCONN;
6946 goto out;
6947 }
6948
6949 if (!rdev->ops->set_rekey_data) {
6950 err = -EOPNOTSUPP;
6951 goto out;
6952 }
6953
6954 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
6955 out:
6956 wdev_unlock(wdev);
6957 return err;
6958 }
6959
6960 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6961 struct genl_info *info)
6962 {
6963 struct net_device *dev = info->user_ptr[1];
6964 struct wireless_dev *wdev = dev->ieee80211_ptr;
6965
6966 if (wdev->iftype != NL80211_IFTYPE_AP &&
6967 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6968 return -EINVAL;
6969
6970 if (wdev->ap_unexpected_nlportid)
6971 return -EBUSY;
6972
6973 wdev->ap_unexpected_nlportid = info->snd_portid;
6974 return 0;
6975 }
6976
6977 static int nl80211_probe_client(struct sk_buff *skb,
6978 struct genl_info *info)
6979 {
6980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6981 struct net_device *dev = info->user_ptr[1];
6982 struct wireless_dev *wdev = dev->ieee80211_ptr;
6983 struct sk_buff *msg;
6984 void *hdr;
6985 const u8 *addr;
6986 u64 cookie;
6987 int err;
6988
6989 if (wdev->iftype != NL80211_IFTYPE_AP &&
6990 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6991 return -EOPNOTSUPP;
6992
6993 if (!info->attrs[NL80211_ATTR_MAC])
6994 return -EINVAL;
6995
6996 if (!rdev->ops->probe_client)
6997 return -EOPNOTSUPP;
6998
6999 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7000 if (!msg)
7001 return -ENOMEM;
7002
7003 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7004 NL80211_CMD_PROBE_CLIENT);
7005
7006 if (IS_ERR(hdr)) {
7007 err = PTR_ERR(hdr);
7008 goto free_msg;
7009 }
7010
7011 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7012
7013 err = rdev_probe_client(rdev, dev, addr, &cookie);
7014 if (err)
7015 goto free_msg;
7016
7017 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7018 goto nla_put_failure;
7019
7020 genlmsg_end(msg, hdr);
7021
7022 return genlmsg_reply(msg, info);
7023
7024 nla_put_failure:
7025 err = -ENOBUFS;
7026 free_msg:
7027 nlmsg_free(msg);
7028 return err;
7029 }
7030
7031 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
7032 {
7033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7034 struct cfg80211_beacon_registration *reg, *nreg;
7035 int rv;
7036
7037 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
7038 return -EOPNOTSUPP;
7039
7040 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
7041 if (!nreg)
7042 return -ENOMEM;
7043
7044 /* First, check if already registered. */
7045 spin_lock_bh(&rdev->beacon_registrations_lock);
7046 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
7047 if (reg->nlportid == info->snd_portid) {
7048 rv = -EALREADY;
7049 goto out_err;
7050 }
7051 }
7052 /* Add it to the list */
7053 nreg->nlportid = info->snd_portid;
7054 list_add(&nreg->list, &rdev->beacon_registrations);
7055
7056 spin_unlock_bh(&rdev->beacon_registrations_lock);
7057
7058 return 0;
7059 out_err:
7060 spin_unlock_bh(&rdev->beacon_registrations_lock);
7061 kfree(nreg);
7062 return rv;
7063 }
7064
7065 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
7066 {
7067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7068 struct wireless_dev *wdev = info->user_ptr[1];
7069 int err;
7070
7071 if (!rdev->ops->start_p2p_device)
7072 return -EOPNOTSUPP;
7073
7074 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
7075 return -EOPNOTSUPP;
7076
7077 if (wdev->p2p_started)
7078 return 0;
7079
7080 mutex_lock(&rdev->devlist_mtx);
7081 err = cfg80211_can_add_interface(rdev, wdev->iftype);
7082 mutex_unlock(&rdev->devlist_mtx);
7083 if (err)
7084 return err;
7085
7086 err = rdev_start_p2p_device(rdev, wdev);
7087 if (err)
7088 return err;
7089
7090 wdev->p2p_started = true;
7091 mutex_lock(&rdev->devlist_mtx);
7092 rdev->opencount++;
7093 mutex_unlock(&rdev->devlist_mtx);
7094
7095 return 0;
7096 }
7097
7098 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
7099 {
7100 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7101 struct wireless_dev *wdev = info->user_ptr[1];
7102
7103 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
7104 return -EOPNOTSUPP;
7105
7106 if (!rdev->ops->stop_p2p_device)
7107 return -EOPNOTSUPP;
7108
7109 if (!wdev->p2p_started)
7110 return 0;
7111
7112 rdev_stop_p2p_device(rdev, wdev);
7113 wdev->p2p_started = false;
7114
7115 mutex_lock(&rdev->devlist_mtx);
7116 rdev->opencount--;
7117 mutex_unlock(&rdev->devlist_mtx);
7118
7119 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
7120 rdev->scan_req->aborted = true;
7121 ___cfg80211_scan_done(rdev, true);
7122 }
7123
7124 return 0;
7125 }
7126
7127 #define NL80211_FLAG_NEED_WIPHY 0x01
7128 #define NL80211_FLAG_NEED_NETDEV 0x02
7129 #define NL80211_FLAG_NEED_RTNL 0x04
7130 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
7131 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
7132 NL80211_FLAG_CHECK_NETDEV_UP)
7133 #define NL80211_FLAG_NEED_WDEV 0x10
7134 /* If a netdev is associated, it must be UP, P2P must be started */
7135 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
7136 NL80211_FLAG_CHECK_NETDEV_UP)
7137
7138 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
7139 struct genl_info *info)
7140 {
7141 struct cfg80211_registered_device *rdev;
7142 struct wireless_dev *wdev;
7143 struct net_device *dev;
7144 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
7145
7146 if (rtnl)
7147 rtnl_lock();
7148
7149 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
7150 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7151 if (IS_ERR(rdev)) {
7152 if (rtnl)
7153 rtnl_unlock();
7154 return PTR_ERR(rdev);
7155 }
7156 info->user_ptr[0] = rdev;
7157 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
7158 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7159 mutex_lock(&cfg80211_mutex);
7160 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
7161 info->attrs);
7162 if (IS_ERR(wdev)) {
7163 mutex_unlock(&cfg80211_mutex);
7164 if (rtnl)
7165 rtnl_unlock();
7166 return PTR_ERR(wdev);
7167 }
7168
7169 dev = wdev->netdev;
7170 rdev = wiphy_to_dev(wdev->wiphy);
7171
7172 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
7173 if (!dev) {
7174 mutex_unlock(&cfg80211_mutex);
7175 if (rtnl)
7176 rtnl_unlock();
7177 return -EINVAL;
7178 }
7179
7180 info->user_ptr[1] = dev;
7181 } else {
7182 info->user_ptr[1] = wdev;
7183 }
7184
7185 if (dev) {
7186 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
7187 !netif_running(dev)) {
7188 mutex_unlock(&cfg80211_mutex);
7189 if (rtnl)
7190 rtnl_unlock();
7191 return -ENETDOWN;
7192 }
7193
7194 dev_hold(dev);
7195 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
7196 if (!wdev->p2p_started) {
7197 mutex_unlock(&cfg80211_mutex);
7198 if (rtnl)
7199 rtnl_unlock();
7200 return -ENETDOWN;
7201 }
7202 }
7203
7204 cfg80211_lock_rdev(rdev);
7205
7206 mutex_unlock(&cfg80211_mutex);
7207
7208 info->user_ptr[0] = rdev;
7209 }
7210
7211 return 0;
7212 }
7213
7214 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
7215 struct genl_info *info)
7216 {
7217 if (info->user_ptr[0])
7218 cfg80211_unlock_rdev(info->user_ptr[0]);
7219 if (info->user_ptr[1]) {
7220 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7221 struct wireless_dev *wdev = info->user_ptr[1];
7222
7223 if (wdev->netdev)
7224 dev_put(wdev->netdev);
7225 } else {
7226 dev_put(info->user_ptr[1]);
7227 }
7228 }
7229 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7230 rtnl_unlock();
7231 }
7232
7233 static struct genl_ops nl80211_ops[] = {
7234 {
7235 .cmd = NL80211_CMD_GET_WIPHY,
7236 .doit = nl80211_get_wiphy,
7237 .dumpit = nl80211_dump_wiphy,
7238 .policy = nl80211_policy,
7239 /* can be retrieved by unprivileged users */
7240 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7241 },
7242 {
7243 .cmd = NL80211_CMD_SET_WIPHY,
7244 .doit = nl80211_set_wiphy,
7245 .policy = nl80211_policy,
7246 .flags = GENL_ADMIN_PERM,
7247 .internal_flags = NL80211_FLAG_NEED_RTNL,
7248 },
7249 {
7250 .cmd = NL80211_CMD_GET_INTERFACE,
7251 .doit = nl80211_get_interface,
7252 .dumpit = nl80211_dump_interface,
7253 .policy = nl80211_policy,
7254 /* can be retrieved by unprivileged users */
7255 .internal_flags = NL80211_FLAG_NEED_WDEV,
7256 },
7257 {
7258 .cmd = NL80211_CMD_SET_INTERFACE,
7259 .doit = nl80211_set_interface,
7260 .policy = nl80211_policy,
7261 .flags = GENL_ADMIN_PERM,
7262 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7263 NL80211_FLAG_NEED_RTNL,
7264 },
7265 {
7266 .cmd = NL80211_CMD_NEW_INTERFACE,
7267 .doit = nl80211_new_interface,
7268 .policy = nl80211_policy,
7269 .flags = GENL_ADMIN_PERM,
7270 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7271 NL80211_FLAG_NEED_RTNL,
7272 },
7273 {
7274 .cmd = NL80211_CMD_DEL_INTERFACE,
7275 .doit = nl80211_del_interface,
7276 .policy = nl80211_policy,
7277 .flags = GENL_ADMIN_PERM,
7278 .internal_flags = NL80211_FLAG_NEED_WDEV |
7279 NL80211_FLAG_NEED_RTNL,
7280 },
7281 {
7282 .cmd = NL80211_CMD_GET_KEY,
7283 .doit = nl80211_get_key,
7284 .policy = nl80211_policy,
7285 .flags = GENL_ADMIN_PERM,
7286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7287 NL80211_FLAG_NEED_RTNL,
7288 },
7289 {
7290 .cmd = NL80211_CMD_SET_KEY,
7291 .doit = nl80211_set_key,
7292 .policy = nl80211_policy,
7293 .flags = GENL_ADMIN_PERM,
7294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7295 NL80211_FLAG_NEED_RTNL,
7296 },
7297 {
7298 .cmd = NL80211_CMD_NEW_KEY,
7299 .doit = nl80211_new_key,
7300 .policy = nl80211_policy,
7301 .flags = GENL_ADMIN_PERM,
7302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7303 NL80211_FLAG_NEED_RTNL,
7304 },
7305 {
7306 .cmd = NL80211_CMD_DEL_KEY,
7307 .doit = nl80211_del_key,
7308 .policy = nl80211_policy,
7309 .flags = GENL_ADMIN_PERM,
7310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7311 NL80211_FLAG_NEED_RTNL,
7312 },
7313 {
7314 .cmd = NL80211_CMD_SET_BEACON,
7315 .policy = nl80211_policy,
7316 .flags = GENL_ADMIN_PERM,
7317 .doit = nl80211_set_beacon,
7318 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7319 NL80211_FLAG_NEED_RTNL,
7320 },
7321 {
7322 .cmd = NL80211_CMD_START_AP,
7323 .policy = nl80211_policy,
7324 .flags = GENL_ADMIN_PERM,
7325 .doit = nl80211_start_ap,
7326 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7327 NL80211_FLAG_NEED_RTNL,
7328 },
7329 {
7330 .cmd = NL80211_CMD_STOP_AP,
7331 .policy = nl80211_policy,
7332 .flags = GENL_ADMIN_PERM,
7333 .doit = nl80211_stop_ap,
7334 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7335 NL80211_FLAG_NEED_RTNL,
7336 },
7337 {
7338 .cmd = NL80211_CMD_GET_STATION,
7339 .doit = nl80211_get_station,
7340 .dumpit = nl80211_dump_station,
7341 .policy = nl80211_policy,
7342 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7343 NL80211_FLAG_NEED_RTNL,
7344 },
7345 {
7346 .cmd = NL80211_CMD_SET_STATION,
7347 .doit = nl80211_set_station,
7348 .policy = nl80211_policy,
7349 .flags = GENL_ADMIN_PERM,
7350 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7351 NL80211_FLAG_NEED_RTNL,
7352 },
7353 {
7354 .cmd = NL80211_CMD_NEW_STATION,
7355 .doit = nl80211_new_station,
7356 .policy = nl80211_policy,
7357 .flags = GENL_ADMIN_PERM,
7358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7359 NL80211_FLAG_NEED_RTNL,
7360 },
7361 {
7362 .cmd = NL80211_CMD_DEL_STATION,
7363 .doit = nl80211_del_station,
7364 .policy = nl80211_policy,
7365 .flags = GENL_ADMIN_PERM,
7366 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7367 NL80211_FLAG_NEED_RTNL,
7368 },
7369 {
7370 .cmd = NL80211_CMD_GET_MPATH,
7371 .doit = nl80211_get_mpath,
7372 .dumpit = nl80211_dump_mpath,
7373 .policy = nl80211_policy,
7374 .flags = GENL_ADMIN_PERM,
7375 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7376 NL80211_FLAG_NEED_RTNL,
7377 },
7378 {
7379 .cmd = NL80211_CMD_SET_MPATH,
7380 .doit = nl80211_set_mpath,
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_NEW_MPATH,
7388 .doit = nl80211_new_mpath,
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_DEL_MPATH,
7396 .doit = nl80211_del_mpath,
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_SET_BSS,
7404 .doit = nl80211_set_bss,
7405 .policy = nl80211_policy,
7406 .flags = GENL_ADMIN_PERM,
7407 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7408 NL80211_FLAG_NEED_RTNL,
7409 },
7410 {
7411 .cmd = NL80211_CMD_GET_REG,
7412 .doit = nl80211_get_reg,
7413 .policy = nl80211_policy,
7414 /* can be retrieved by unprivileged users */
7415 },
7416 {
7417 .cmd = NL80211_CMD_SET_REG,
7418 .doit = nl80211_set_reg,
7419 .policy = nl80211_policy,
7420 .flags = GENL_ADMIN_PERM,
7421 },
7422 {
7423 .cmd = NL80211_CMD_REQ_SET_REG,
7424 .doit = nl80211_req_set_reg,
7425 .policy = nl80211_policy,
7426 .flags = GENL_ADMIN_PERM,
7427 },
7428 {
7429 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7430 .doit = nl80211_get_mesh_config,
7431 .policy = nl80211_policy,
7432 /* can be retrieved by unprivileged users */
7433 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7434 NL80211_FLAG_NEED_RTNL,
7435 },
7436 {
7437 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7438 .doit = nl80211_update_mesh_config,
7439 .policy = nl80211_policy,
7440 .flags = GENL_ADMIN_PERM,
7441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7442 NL80211_FLAG_NEED_RTNL,
7443 },
7444 {
7445 .cmd = NL80211_CMD_TRIGGER_SCAN,
7446 .doit = nl80211_trigger_scan,
7447 .policy = nl80211_policy,
7448 .flags = GENL_ADMIN_PERM,
7449 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7450 NL80211_FLAG_NEED_RTNL,
7451 },
7452 {
7453 .cmd = NL80211_CMD_GET_SCAN,
7454 .policy = nl80211_policy,
7455 .dumpit = nl80211_dump_scan,
7456 },
7457 {
7458 .cmd = NL80211_CMD_START_SCHED_SCAN,
7459 .doit = nl80211_start_sched_scan,
7460 .policy = nl80211_policy,
7461 .flags = GENL_ADMIN_PERM,
7462 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7463 NL80211_FLAG_NEED_RTNL,
7464 },
7465 {
7466 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7467 .doit = nl80211_stop_sched_scan,
7468 .policy = nl80211_policy,
7469 .flags = GENL_ADMIN_PERM,
7470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7471 NL80211_FLAG_NEED_RTNL,
7472 },
7473 {
7474 .cmd = NL80211_CMD_AUTHENTICATE,
7475 .doit = nl80211_authenticate,
7476 .policy = nl80211_policy,
7477 .flags = GENL_ADMIN_PERM,
7478 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7479 NL80211_FLAG_NEED_RTNL,
7480 },
7481 {
7482 .cmd = NL80211_CMD_ASSOCIATE,
7483 .doit = nl80211_associate,
7484 .policy = nl80211_policy,
7485 .flags = GENL_ADMIN_PERM,
7486 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7487 NL80211_FLAG_NEED_RTNL,
7488 },
7489 {
7490 .cmd = NL80211_CMD_DEAUTHENTICATE,
7491 .doit = nl80211_deauthenticate,
7492 .policy = nl80211_policy,
7493 .flags = GENL_ADMIN_PERM,
7494 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7495 NL80211_FLAG_NEED_RTNL,
7496 },
7497 {
7498 .cmd = NL80211_CMD_DISASSOCIATE,
7499 .doit = nl80211_disassociate,
7500 .policy = nl80211_policy,
7501 .flags = GENL_ADMIN_PERM,
7502 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7503 NL80211_FLAG_NEED_RTNL,
7504 },
7505 {
7506 .cmd = NL80211_CMD_JOIN_IBSS,
7507 .doit = nl80211_join_ibss,
7508 .policy = nl80211_policy,
7509 .flags = GENL_ADMIN_PERM,
7510 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7511 NL80211_FLAG_NEED_RTNL,
7512 },
7513 {
7514 .cmd = NL80211_CMD_LEAVE_IBSS,
7515 .doit = nl80211_leave_ibss,
7516 .policy = nl80211_policy,
7517 .flags = GENL_ADMIN_PERM,
7518 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7519 NL80211_FLAG_NEED_RTNL,
7520 },
7521 #ifdef CONFIG_NL80211_TESTMODE
7522 {
7523 .cmd = NL80211_CMD_TESTMODE,
7524 .doit = nl80211_testmode_do,
7525 .dumpit = nl80211_testmode_dump,
7526 .policy = nl80211_policy,
7527 .flags = GENL_ADMIN_PERM,
7528 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7529 NL80211_FLAG_NEED_RTNL,
7530 },
7531 #endif
7532 {
7533 .cmd = NL80211_CMD_CONNECT,
7534 .doit = nl80211_connect,
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_DISCONNECT,
7542 .doit = nl80211_disconnect,
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_SET_WIPHY_NETNS,
7550 .doit = nl80211_wiphy_netns,
7551 .policy = nl80211_policy,
7552 .flags = GENL_ADMIN_PERM,
7553 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7554 NL80211_FLAG_NEED_RTNL,
7555 },
7556 {
7557 .cmd = NL80211_CMD_GET_SURVEY,
7558 .policy = nl80211_policy,
7559 .dumpit = nl80211_dump_survey,
7560 },
7561 {
7562 .cmd = NL80211_CMD_SET_PMKSA,
7563 .doit = nl80211_setdel_pmksa,
7564 .policy = nl80211_policy,
7565 .flags = GENL_ADMIN_PERM,
7566 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7567 NL80211_FLAG_NEED_RTNL,
7568 },
7569 {
7570 .cmd = NL80211_CMD_DEL_PMKSA,
7571 .doit = nl80211_setdel_pmksa,
7572 .policy = nl80211_policy,
7573 .flags = GENL_ADMIN_PERM,
7574 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7575 NL80211_FLAG_NEED_RTNL,
7576 },
7577 {
7578 .cmd = NL80211_CMD_FLUSH_PMKSA,
7579 .doit = nl80211_flush_pmksa,
7580 .policy = nl80211_policy,
7581 .flags = GENL_ADMIN_PERM,
7582 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7583 NL80211_FLAG_NEED_RTNL,
7584 },
7585 {
7586 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7587 .doit = nl80211_remain_on_channel,
7588 .policy = nl80211_policy,
7589 .flags = GENL_ADMIN_PERM,
7590 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7591 NL80211_FLAG_NEED_RTNL,
7592 },
7593 {
7594 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7595 .doit = nl80211_cancel_remain_on_channel,
7596 .policy = nl80211_policy,
7597 .flags = GENL_ADMIN_PERM,
7598 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7599 NL80211_FLAG_NEED_RTNL,
7600 },
7601 {
7602 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7603 .doit = nl80211_set_tx_bitrate_mask,
7604 .policy = nl80211_policy,
7605 .flags = GENL_ADMIN_PERM,
7606 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7607 NL80211_FLAG_NEED_RTNL,
7608 },
7609 {
7610 .cmd = NL80211_CMD_REGISTER_FRAME,
7611 .doit = nl80211_register_mgmt,
7612 .policy = nl80211_policy,
7613 .flags = GENL_ADMIN_PERM,
7614 .internal_flags = NL80211_FLAG_NEED_WDEV |
7615 NL80211_FLAG_NEED_RTNL,
7616 },
7617 {
7618 .cmd = NL80211_CMD_FRAME,
7619 .doit = nl80211_tx_mgmt,
7620 .policy = nl80211_policy,
7621 .flags = GENL_ADMIN_PERM,
7622 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7623 NL80211_FLAG_NEED_RTNL,
7624 },
7625 {
7626 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7627 .doit = nl80211_tx_mgmt_cancel_wait,
7628 .policy = nl80211_policy,
7629 .flags = GENL_ADMIN_PERM,
7630 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7631 NL80211_FLAG_NEED_RTNL,
7632 },
7633 {
7634 .cmd = NL80211_CMD_SET_POWER_SAVE,
7635 .doit = nl80211_set_power_save,
7636 .policy = nl80211_policy,
7637 .flags = GENL_ADMIN_PERM,
7638 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7639 NL80211_FLAG_NEED_RTNL,
7640 },
7641 {
7642 .cmd = NL80211_CMD_GET_POWER_SAVE,
7643 .doit = nl80211_get_power_save,
7644 .policy = nl80211_policy,
7645 /* can be retrieved by unprivileged users */
7646 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7647 NL80211_FLAG_NEED_RTNL,
7648 },
7649 {
7650 .cmd = NL80211_CMD_SET_CQM,
7651 .doit = nl80211_set_cqm,
7652 .policy = nl80211_policy,
7653 .flags = GENL_ADMIN_PERM,
7654 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7655 NL80211_FLAG_NEED_RTNL,
7656 },
7657 {
7658 .cmd = NL80211_CMD_SET_CHANNEL,
7659 .doit = nl80211_set_channel,
7660 .policy = nl80211_policy,
7661 .flags = GENL_ADMIN_PERM,
7662 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7663 NL80211_FLAG_NEED_RTNL,
7664 },
7665 {
7666 .cmd = NL80211_CMD_SET_WDS_PEER,
7667 .doit = nl80211_set_wds_peer,
7668 .policy = nl80211_policy,
7669 .flags = GENL_ADMIN_PERM,
7670 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7671 NL80211_FLAG_NEED_RTNL,
7672 },
7673 {
7674 .cmd = NL80211_CMD_JOIN_MESH,
7675 .doit = nl80211_join_mesh,
7676 .policy = nl80211_policy,
7677 .flags = GENL_ADMIN_PERM,
7678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7679 NL80211_FLAG_NEED_RTNL,
7680 },
7681 {
7682 .cmd = NL80211_CMD_LEAVE_MESH,
7683 .doit = nl80211_leave_mesh,
7684 .policy = nl80211_policy,
7685 .flags = GENL_ADMIN_PERM,
7686 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7687 NL80211_FLAG_NEED_RTNL,
7688 },
7689 #ifdef CONFIG_PM
7690 {
7691 .cmd = NL80211_CMD_GET_WOWLAN,
7692 .doit = nl80211_get_wowlan,
7693 .policy = nl80211_policy,
7694 /* can be retrieved by unprivileged users */
7695 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7696 NL80211_FLAG_NEED_RTNL,
7697 },
7698 {
7699 .cmd = NL80211_CMD_SET_WOWLAN,
7700 .doit = nl80211_set_wowlan,
7701 .policy = nl80211_policy,
7702 .flags = GENL_ADMIN_PERM,
7703 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7704 NL80211_FLAG_NEED_RTNL,
7705 },
7706 #endif
7707 {
7708 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7709 .doit = nl80211_set_rekey_data,
7710 .policy = nl80211_policy,
7711 .flags = GENL_ADMIN_PERM,
7712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7713 NL80211_FLAG_NEED_RTNL,
7714 },
7715 {
7716 .cmd = NL80211_CMD_TDLS_MGMT,
7717 .doit = nl80211_tdls_mgmt,
7718 .policy = nl80211_policy,
7719 .flags = GENL_ADMIN_PERM,
7720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7721 NL80211_FLAG_NEED_RTNL,
7722 },
7723 {
7724 .cmd = NL80211_CMD_TDLS_OPER,
7725 .doit = nl80211_tdls_oper,
7726 .policy = nl80211_policy,
7727 .flags = GENL_ADMIN_PERM,
7728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7729 NL80211_FLAG_NEED_RTNL,
7730 },
7731 {
7732 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7733 .doit = nl80211_register_unexpected_frame,
7734 .policy = nl80211_policy,
7735 .flags = GENL_ADMIN_PERM,
7736 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7737 NL80211_FLAG_NEED_RTNL,
7738 },
7739 {
7740 .cmd = NL80211_CMD_PROBE_CLIENT,
7741 .doit = nl80211_probe_client,
7742 .policy = nl80211_policy,
7743 .flags = GENL_ADMIN_PERM,
7744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7745 NL80211_FLAG_NEED_RTNL,
7746 },
7747 {
7748 .cmd = NL80211_CMD_REGISTER_BEACONS,
7749 .doit = nl80211_register_beacons,
7750 .policy = nl80211_policy,
7751 .flags = GENL_ADMIN_PERM,
7752 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7753 NL80211_FLAG_NEED_RTNL,
7754 },
7755 {
7756 .cmd = NL80211_CMD_SET_NOACK_MAP,
7757 .doit = nl80211_set_noack_map,
7758 .policy = nl80211_policy,
7759 .flags = GENL_ADMIN_PERM,
7760 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7761 NL80211_FLAG_NEED_RTNL,
7762 },
7763 {
7764 .cmd = NL80211_CMD_START_P2P_DEVICE,
7765 .doit = nl80211_start_p2p_device,
7766 .policy = nl80211_policy,
7767 .flags = GENL_ADMIN_PERM,
7768 .internal_flags = NL80211_FLAG_NEED_WDEV |
7769 NL80211_FLAG_NEED_RTNL,
7770 },
7771 {
7772 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7773 .doit = nl80211_stop_p2p_device,
7774 .policy = nl80211_policy,
7775 .flags = GENL_ADMIN_PERM,
7776 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7777 NL80211_FLAG_NEED_RTNL,
7778 },
7779 {
7780 .cmd = NL80211_CMD_SET_MCAST_RATE,
7781 .doit = nl80211_set_mcast_rate,
7782 .policy = nl80211_policy,
7783 .flags = GENL_ADMIN_PERM,
7784 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7785 NL80211_FLAG_NEED_RTNL,
7786 },
7787 };
7788
7789 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7790 .name = "mlme",
7791 };
7792
7793 /* multicast groups */
7794 static struct genl_multicast_group nl80211_config_mcgrp = {
7795 .name = "config",
7796 };
7797 static struct genl_multicast_group nl80211_scan_mcgrp = {
7798 .name = "scan",
7799 };
7800 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7801 .name = "regulatory",
7802 };
7803
7804 /* notification functions */
7805
7806 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7807 {
7808 struct sk_buff *msg;
7809
7810 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7811 if (!msg)
7812 return;
7813
7814 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7815 nlmsg_free(msg);
7816 return;
7817 }
7818
7819 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7820 nl80211_config_mcgrp.id, GFP_KERNEL);
7821 }
7822
7823 static int nl80211_add_scan_req(struct sk_buff *msg,
7824 struct cfg80211_registered_device *rdev)
7825 {
7826 struct cfg80211_scan_request *req = rdev->scan_req;
7827 struct nlattr *nest;
7828 int i;
7829
7830 ASSERT_RDEV_LOCK(rdev);
7831
7832 if (WARN_ON(!req))
7833 return 0;
7834
7835 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7836 if (!nest)
7837 goto nla_put_failure;
7838 for (i = 0; i < req->n_ssids; i++) {
7839 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7840 goto nla_put_failure;
7841 }
7842 nla_nest_end(msg, nest);
7843
7844 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7845 if (!nest)
7846 goto nla_put_failure;
7847 for (i = 0; i < req->n_channels; i++) {
7848 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7849 goto nla_put_failure;
7850 }
7851 nla_nest_end(msg, nest);
7852
7853 if (req->ie &&
7854 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7855 goto nla_put_failure;
7856
7857 if (req->flags)
7858 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
7859
7860 return 0;
7861 nla_put_failure:
7862 return -ENOBUFS;
7863 }
7864
7865 static int nl80211_send_scan_msg(struct sk_buff *msg,
7866 struct cfg80211_registered_device *rdev,
7867 struct wireless_dev *wdev,
7868 u32 portid, u32 seq, int flags,
7869 u32 cmd)
7870 {
7871 void *hdr;
7872
7873 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7874 if (!hdr)
7875 return -1;
7876
7877 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7878 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7879 wdev->netdev->ifindex)) ||
7880 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7881 goto nla_put_failure;
7882
7883 /* ignore errors and send incomplete event anyway */
7884 nl80211_add_scan_req(msg, rdev);
7885
7886 return genlmsg_end(msg, hdr);
7887
7888 nla_put_failure:
7889 genlmsg_cancel(msg, hdr);
7890 return -EMSGSIZE;
7891 }
7892
7893 static int
7894 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7895 struct cfg80211_registered_device *rdev,
7896 struct net_device *netdev,
7897 u32 portid, u32 seq, int flags, u32 cmd)
7898 {
7899 void *hdr;
7900
7901 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7902 if (!hdr)
7903 return -1;
7904
7905 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7906 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7907 goto nla_put_failure;
7908
7909 return genlmsg_end(msg, hdr);
7910
7911 nla_put_failure:
7912 genlmsg_cancel(msg, hdr);
7913 return -EMSGSIZE;
7914 }
7915
7916 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7917 struct wireless_dev *wdev)
7918 {
7919 struct sk_buff *msg;
7920
7921 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7922 if (!msg)
7923 return;
7924
7925 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7926 NL80211_CMD_TRIGGER_SCAN) < 0) {
7927 nlmsg_free(msg);
7928 return;
7929 }
7930
7931 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7932 nl80211_scan_mcgrp.id, GFP_KERNEL);
7933 }
7934
7935 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7936 struct wireless_dev *wdev)
7937 {
7938 struct sk_buff *msg;
7939
7940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7941 if (!msg)
7942 return;
7943
7944 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7945 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7946 nlmsg_free(msg);
7947 return;
7948 }
7949
7950 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7951 nl80211_scan_mcgrp.id, GFP_KERNEL);
7952 }
7953
7954 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7955 struct wireless_dev *wdev)
7956 {
7957 struct sk_buff *msg;
7958
7959 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7960 if (!msg)
7961 return;
7962
7963 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7964 NL80211_CMD_SCAN_ABORTED) < 0) {
7965 nlmsg_free(msg);
7966 return;
7967 }
7968
7969 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7970 nl80211_scan_mcgrp.id, GFP_KERNEL);
7971 }
7972
7973 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7974 struct net_device *netdev)
7975 {
7976 struct sk_buff *msg;
7977
7978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7979 if (!msg)
7980 return;
7981
7982 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7983 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7984 nlmsg_free(msg);
7985 return;
7986 }
7987
7988 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7989 nl80211_scan_mcgrp.id, GFP_KERNEL);
7990 }
7991
7992 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7993 struct net_device *netdev, u32 cmd)
7994 {
7995 struct sk_buff *msg;
7996
7997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7998 if (!msg)
7999 return;
8000
8001 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
8002 nlmsg_free(msg);
8003 return;
8004 }
8005
8006 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8007 nl80211_scan_mcgrp.id, GFP_KERNEL);
8008 }
8009
8010 /*
8011 * This can happen on global regulatory changes or device specific settings
8012 * based on custom world regulatory domains.
8013 */
8014 void nl80211_send_reg_change_event(struct regulatory_request *request)
8015 {
8016 struct sk_buff *msg;
8017 void *hdr;
8018
8019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8020 if (!msg)
8021 return;
8022
8023 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
8024 if (!hdr) {
8025 nlmsg_free(msg);
8026 return;
8027 }
8028
8029 /* Userspace can always count this one always being set */
8030 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
8031 goto nla_put_failure;
8032
8033 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
8034 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8035 NL80211_REGDOM_TYPE_WORLD))
8036 goto nla_put_failure;
8037 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
8038 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8039 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
8040 goto nla_put_failure;
8041 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
8042 request->intersect) {
8043 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8044 NL80211_REGDOM_TYPE_INTERSECTION))
8045 goto nla_put_failure;
8046 } else {
8047 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
8048 NL80211_REGDOM_TYPE_COUNTRY) ||
8049 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
8050 request->alpha2))
8051 goto nla_put_failure;
8052 }
8053
8054 if (wiphy_idx_valid(request->wiphy_idx) &&
8055 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
8056 goto nla_put_failure;
8057
8058 genlmsg_end(msg, hdr);
8059
8060 rcu_read_lock();
8061 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8062 GFP_ATOMIC);
8063 rcu_read_unlock();
8064
8065 return;
8066
8067 nla_put_failure:
8068 genlmsg_cancel(msg, hdr);
8069 nlmsg_free(msg);
8070 }
8071
8072 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
8073 struct net_device *netdev,
8074 const u8 *buf, size_t len,
8075 enum nl80211_commands cmd, gfp_t gfp)
8076 {
8077 struct sk_buff *msg;
8078 void *hdr;
8079
8080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8081 if (!msg)
8082 return;
8083
8084 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8085 if (!hdr) {
8086 nlmsg_free(msg);
8087 return;
8088 }
8089
8090 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8091 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8092 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8093 goto nla_put_failure;
8094
8095 genlmsg_end(msg, hdr);
8096
8097 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8098 nl80211_mlme_mcgrp.id, gfp);
8099 return;
8100
8101 nla_put_failure:
8102 genlmsg_cancel(msg, hdr);
8103 nlmsg_free(msg);
8104 }
8105
8106 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
8107 struct net_device *netdev, const u8 *buf,
8108 size_t len, gfp_t gfp)
8109 {
8110 nl80211_send_mlme_event(rdev, netdev, buf, len,
8111 NL80211_CMD_AUTHENTICATE, gfp);
8112 }
8113
8114 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
8115 struct net_device *netdev, const u8 *buf,
8116 size_t len, gfp_t gfp)
8117 {
8118 nl80211_send_mlme_event(rdev, netdev, buf, len,
8119 NL80211_CMD_ASSOCIATE, gfp);
8120 }
8121
8122 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
8123 struct net_device *netdev, const u8 *buf,
8124 size_t len, gfp_t gfp)
8125 {
8126 nl80211_send_mlme_event(rdev, netdev, buf, len,
8127 NL80211_CMD_DEAUTHENTICATE, gfp);
8128 }
8129
8130 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
8131 struct net_device *netdev, const u8 *buf,
8132 size_t len, gfp_t gfp)
8133 {
8134 nl80211_send_mlme_event(rdev, netdev, buf, len,
8135 NL80211_CMD_DISASSOCIATE, gfp);
8136 }
8137
8138 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
8139 struct net_device *netdev, const u8 *buf,
8140 size_t len, gfp_t gfp)
8141 {
8142 nl80211_send_mlme_event(rdev, netdev, buf, len,
8143 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
8144 }
8145
8146 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
8147 struct net_device *netdev, const u8 *buf,
8148 size_t len, gfp_t gfp)
8149 {
8150 nl80211_send_mlme_event(rdev, netdev, buf, len,
8151 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
8152 }
8153
8154 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
8155 struct net_device *netdev, int cmd,
8156 const u8 *addr, gfp_t gfp)
8157 {
8158 struct sk_buff *msg;
8159 void *hdr;
8160
8161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8162 if (!msg)
8163 return;
8164
8165 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8166 if (!hdr) {
8167 nlmsg_free(msg);
8168 return;
8169 }
8170
8171 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8172 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8173 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
8174 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8175 goto nla_put_failure;
8176
8177 genlmsg_end(msg, hdr);
8178
8179 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8180 nl80211_mlme_mcgrp.id, gfp);
8181 return;
8182
8183 nla_put_failure:
8184 genlmsg_cancel(msg, hdr);
8185 nlmsg_free(msg);
8186 }
8187
8188 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
8189 struct net_device *netdev, const u8 *addr,
8190 gfp_t gfp)
8191 {
8192 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
8193 addr, gfp);
8194 }
8195
8196 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
8197 struct net_device *netdev, const u8 *addr,
8198 gfp_t gfp)
8199 {
8200 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
8201 addr, gfp);
8202 }
8203
8204 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
8205 struct net_device *netdev, const u8 *bssid,
8206 const u8 *req_ie, size_t req_ie_len,
8207 const u8 *resp_ie, size_t resp_ie_len,
8208 u16 status, gfp_t gfp)
8209 {
8210 struct sk_buff *msg;
8211 void *hdr;
8212
8213 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8214 if (!msg)
8215 return;
8216
8217 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
8218 if (!hdr) {
8219 nlmsg_free(msg);
8220 return;
8221 }
8222
8223 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8224 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8225 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
8226 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
8227 (req_ie &&
8228 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8229 (resp_ie &&
8230 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8231 goto nla_put_failure;
8232
8233 genlmsg_end(msg, hdr);
8234
8235 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8236 nl80211_mlme_mcgrp.id, gfp);
8237 return;
8238
8239 nla_put_failure:
8240 genlmsg_cancel(msg, hdr);
8241 nlmsg_free(msg);
8242
8243 }
8244
8245 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8246 struct net_device *netdev, const u8 *bssid,
8247 const u8 *req_ie, size_t req_ie_len,
8248 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
8249 {
8250 struct sk_buff *msg;
8251 void *hdr;
8252
8253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8254 if (!msg)
8255 return;
8256
8257 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
8258 if (!hdr) {
8259 nlmsg_free(msg);
8260 return;
8261 }
8262
8263 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8264 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8265 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
8266 (req_ie &&
8267 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8268 (resp_ie &&
8269 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8270 goto nla_put_failure;
8271
8272 genlmsg_end(msg, hdr);
8273
8274 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8275 nl80211_mlme_mcgrp.id, gfp);
8276 return;
8277
8278 nla_put_failure:
8279 genlmsg_cancel(msg, hdr);
8280 nlmsg_free(msg);
8281
8282 }
8283
8284 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8285 struct net_device *netdev, u16 reason,
8286 const u8 *ie, size_t ie_len, bool from_ap)
8287 {
8288 struct sk_buff *msg;
8289 void *hdr;
8290
8291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8292 if (!msg)
8293 return;
8294
8295 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8296 if (!hdr) {
8297 nlmsg_free(msg);
8298 return;
8299 }
8300
8301 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8302 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8303 (from_ap && reason &&
8304 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8305 (from_ap &&
8306 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8307 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8308 goto nla_put_failure;
8309
8310 genlmsg_end(msg, hdr);
8311
8312 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8313 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8314 return;
8315
8316 nla_put_failure:
8317 genlmsg_cancel(msg, hdr);
8318 nlmsg_free(msg);
8319
8320 }
8321
8322 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8323 struct net_device *netdev, const u8 *bssid,
8324 gfp_t gfp)
8325 {
8326 struct sk_buff *msg;
8327 void *hdr;
8328
8329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8330 if (!msg)
8331 return;
8332
8333 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8334 if (!hdr) {
8335 nlmsg_free(msg);
8336 return;
8337 }
8338
8339 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8340 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8341 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8342 goto nla_put_failure;
8343
8344 genlmsg_end(msg, hdr);
8345
8346 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8347 nl80211_mlme_mcgrp.id, gfp);
8348 return;
8349
8350 nla_put_failure:
8351 genlmsg_cancel(msg, hdr);
8352 nlmsg_free(msg);
8353 }
8354
8355 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8356 struct net_device *netdev,
8357 const u8 *macaddr, const u8* ie, u8 ie_len,
8358 gfp_t gfp)
8359 {
8360 struct sk_buff *msg;
8361 void *hdr;
8362
8363 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8364 if (!msg)
8365 return;
8366
8367 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8368 if (!hdr) {
8369 nlmsg_free(msg);
8370 return;
8371 }
8372
8373 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8374 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8375 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8376 (ie_len && ie &&
8377 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8378 goto nla_put_failure;
8379
8380 genlmsg_end(msg, hdr);
8381
8382 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8383 nl80211_mlme_mcgrp.id, gfp);
8384 return;
8385
8386 nla_put_failure:
8387 genlmsg_cancel(msg, hdr);
8388 nlmsg_free(msg);
8389 }
8390
8391 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8392 struct net_device *netdev, const u8 *addr,
8393 enum nl80211_key_type key_type, int key_id,
8394 const u8 *tsc, gfp_t gfp)
8395 {
8396 struct sk_buff *msg;
8397 void *hdr;
8398
8399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8400 if (!msg)
8401 return;
8402
8403 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8404 if (!hdr) {
8405 nlmsg_free(msg);
8406 return;
8407 }
8408
8409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8410 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8411 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8412 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8413 (key_id != -1 &&
8414 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8415 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8416 goto nla_put_failure;
8417
8418 genlmsg_end(msg, hdr);
8419
8420 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8421 nl80211_mlme_mcgrp.id, gfp);
8422 return;
8423
8424 nla_put_failure:
8425 genlmsg_cancel(msg, hdr);
8426 nlmsg_free(msg);
8427 }
8428
8429 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8430 struct ieee80211_channel *channel_before,
8431 struct ieee80211_channel *channel_after)
8432 {
8433 struct sk_buff *msg;
8434 void *hdr;
8435 struct nlattr *nl_freq;
8436
8437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8438 if (!msg)
8439 return;
8440
8441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8442 if (!hdr) {
8443 nlmsg_free(msg);
8444 return;
8445 }
8446
8447 /*
8448 * Since we are applying the beacon hint to a wiphy we know its
8449 * wiphy_idx is valid
8450 */
8451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8452 goto nla_put_failure;
8453
8454 /* Before */
8455 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8456 if (!nl_freq)
8457 goto nla_put_failure;
8458 if (nl80211_msg_put_channel(msg, channel_before))
8459 goto nla_put_failure;
8460 nla_nest_end(msg, nl_freq);
8461
8462 /* After */
8463 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8464 if (!nl_freq)
8465 goto nla_put_failure;
8466 if (nl80211_msg_put_channel(msg, channel_after))
8467 goto nla_put_failure;
8468 nla_nest_end(msg, nl_freq);
8469
8470 genlmsg_end(msg, hdr);
8471
8472 rcu_read_lock();
8473 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8474 GFP_ATOMIC);
8475 rcu_read_unlock();
8476
8477 return;
8478
8479 nla_put_failure:
8480 genlmsg_cancel(msg, hdr);
8481 nlmsg_free(msg);
8482 }
8483
8484 static void nl80211_send_remain_on_chan_event(
8485 int cmd, struct cfg80211_registered_device *rdev,
8486 struct wireless_dev *wdev, u64 cookie,
8487 struct ieee80211_channel *chan,
8488 unsigned int duration, gfp_t gfp)
8489 {
8490 struct sk_buff *msg;
8491 void *hdr;
8492
8493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8494 if (!msg)
8495 return;
8496
8497 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8498 if (!hdr) {
8499 nlmsg_free(msg);
8500 return;
8501 }
8502
8503 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8504 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8505 wdev->netdev->ifindex)) ||
8506 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8507 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8508 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
8509 NL80211_CHAN_NO_HT) ||
8510 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8511 goto nla_put_failure;
8512
8513 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8514 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8515 goto nla_put_failure;
8516
8517 genlmsg_end(msg, hdr);
8518
8519 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8520 nl80211_mlme_mcgrp.id, gfp);
8521 return;
8522
8523 nla_put_failure:
8524 genlmsg_cancel(msg, hdr);
8525 nlmsg_free(msg);
8526 }
8527
8528 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8529 struct wireless_dev *wdev, u64 cookie,
8530 struct ieee80211_channel *chan,
8531 unsigned int duration, gfp_t gfp)
8532 {
8533 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8534 rdev, wdev, cookie, chan,
8535 duration, gfp);
8536 }
8537
8538 void nl80211_send_remain_on_channel_cancel(
8539 struct cfg80211_registered_device *rdev,
8540 struct wireless_dev *wdev,
8541 u64 cookie, struct ieee80211_channel *chan, gfp_t gfp)
8542 {
8543 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8544 rdev, wdev, cookie, chan, 0, gfp);
8545 }
8546
8547 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8548 struct net_device *dev, const u8 *mac_addr,
8549 struct station_info *sinfo, gfp_t gfp)
8550 {
8551 struct sk_buff *msg;
8552
8553 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8554 if (!msg)
8555 return;
8556
8557 if (nl80211_send_station(msg, 0, 0, 0,
8558 rdev, dev, mac_addr, sinfo) < 0) {
8559 nlmsg_free(msg);
8560 return;
8561 }
8562
8563 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8564 nl80211_mlme_mcgrp.id, gfp);
8565 }
8566
8567 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8568 struct net_device *dev, const u8 *mac_addr,
8569 gfp_t gfp)
8570 {
8571 struct sk_buff *msg;
8572 void *hdr;
8573
8574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8575 if (!msg)
8576 return;
8577
8578 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8579 if (!hdr) {
8580 nlmsg_free(msg);
8581 return;
8582 }
8583
8584 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8585 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8586 goto nla_put_failure;
8587
8588 genlmsg_end(msg, hdr);
8589
8590 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8591 nl80211_mlme_mcgrp.id, gfp);
8592 return;
8593
8594 nla_put_failure:
8595 genlmsg_cancel(msg, hdr);
8596 nlmsg_free(msg);
8597 }
8598
8599 void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
8600 struct net_device *dev, const u8 *mac_addr,
8601 enum nl80211_connect_failed_reason reason,
8602 gfp_t gfp)
8603 {
8604 struct sk_buff *msg;
8605 void *hdr;
8606
8607 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8608 if (!msg)
8609 return;
8610
8611 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
8612 if (!hdr) {
8613 nlmsg_free(msg);
8614 return;
8615 }
8616
8617 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8618 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
8619 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
8620 goto nla_put_failure;
8621
8622 genlmsg_end(msg, hdr);
8623
8624 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8625 nl80211_mlme_mcgrp.id, gfp);
8626 return;
8627
8628 nla_put_failure:
8629 genlmsg_cancel(msg, hdr);
8630 nlmsg_free(msg);
8631 }
8632
8633 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8634 const u8 *addr, gfp_t gfp)
8635 {
8636 struct wireless_dev *wdev = dev->ieee80211_ptr;
8637 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8638 struct sk_buff *msg;
8639 void *hdr;
8640 int err;
8641 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
8642
8643 if (!nlportid)
8644 return false;
8645
8646 msg = nlmsg_new(100, gfp);
8647 if (!msg)
8648 return true;
8649
8650 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8651 if (!hdr) {
8652 nlmsg_free(msg);
8653 return true;
8654 }
8655
8656 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8657 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8658 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8659 goto nla_put_failure;
8660
8661 err = genlmsg_end(msg, hdr);
8662 if (err < 0) {
8663 nlmsg_free(msg);
8664 return true;
8665 }
8666
8667 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8668 return true;
8669
8670 nla_put_failure:
8671 genlmsg_cancel(msg, hdr);
8672 nlmsg_free(msg);
8673 return true;
8674 }
8675
8676 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8677 {
8678 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8679 addr, gfp);
8680 }
8681
8682 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8683 const u8 *addr, gfp_t gfp)
8684 {
8685 return __nl80211_unexpected_frame(dev,
8686 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8687 addr, gfp);
8688 }
8689
8690 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8691 struct wireless_dev *wdev, u32 nlportid,
8692 int freq, int sig_dbm,
8693 const u8 *buf, size_t len, gfp_t gfp)
8694 {
8695 struct net_device *netdev = wdev->netdev;
8696 struct sk_buff *msg;
8697 void *hdr;
8698
8699 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8700 if (!msg)
8701 return -ENOMEM;
8702
8703 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8704 if (!hdr) {
8705 nlmsg_free(msg);
8706 return -ENOMEM;
8707 }
8708
8709 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8710 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8711 netdev->ifindex)) ||
8712 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8713 (sig_dbm &&
8714 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8715 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8716 goto nla_put_failure;
8717
8718 genlmsg_end(msg, hdr);
8719
8720 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8721
8722 nla_put_failure:
8723 genlmsg_cancel(msg, hdr);
8724 nlmsg_free(msg);
8725 return -ENOBUFS;
8726 }
8727
8728 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8729 struct wireless_dev *wdev, u64 cookie,
8730 const u8 *buf, size_t len, bool ack,
8731 gfp_t gfp)
8732 {
8733 struct net_device *netdev = wdev->netdev;
8734 struct sk_buff *msg;
8735 void *hdr;
8736
8737 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8738 if (!msg)
8739 return;
8740
8741 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8742 if (!hdr) {
8743 nlmsg_free(msg);
8744 return;
8745 }
8746
8747 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8748 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8749 netdev->ifindex)) ||
8750 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8751 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8752 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8753 goto nla_put_failure;
8754
8755 genlmsg_end(msg, hdr);
8756
8757 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8758 return;
8759
8760 nla_put_failure:
8761 genlmsg_cancel(msg, hdr);
8762 nlmsg_free(msg);
8763 }
8764
8765 void
8766 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8767 struct net_device *netdev,
8768 enum nl80211_cqm_rssi_threshold_event rssi_event,
8769 gfp_t gfp)
8770 {
8771 struct sk_buff *msg;
8772 struct nlattr *pinfoattr;
8773 void *hdr;
8774
8775 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8776 if (!msg)
8777 return;
8778
8779 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8780 if (!hdr) {
8781 nlmsg_free(msg);
8782 return;
8783 }
8784
8785 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8786 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8787 goto nla_put_failure;
8788
8789 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8790 if (!pinfoattr)
8791 goto nla_put_failure;
8792
8793 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8794 rssi_event))
8795 goto nla_put_failure;
8796
8797 nla_nest_end(msg, pinfoattr);
8798
8799 genlmsg_end(msg, hdr);
8800
8801 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8802 nl80211_mlme_mcgrp.id, gfp);
8803 return;
8804
8805 nla_put_failure:
8806 genlmsg_cancel(msg, hdr);
8807 nlmsg_free(msg);
8808 }
8809
8810 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8811 struct net_device *netdev, const u8 *bssid,
8812 const u8 *replay_ctr, gfp_t gfp)
8813 {
8814 struct sk_buff *msg;
8815 struct nlattr *rekey_attr;
8816 void *hdr;
8817
8818 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8819 if (!msg)
8820 return;
8821
8822 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8823 if (!hdr) {
8824 nlmsg_free(msg);
8825 return;
8826 }
8827
8828 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8829 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8830 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8831 goto nla_put_failure;
8832
8833 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8834 if (!rekey_attr)
8835 goto nla_put_failure;
8836
8837 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8838 NL80211_REPLAY_CTR_LEN, replay_ctr))
8839 goto nla_put_failure;
8840
8841 nla_nest_end(msg, rekey_attr);
8842
8843 genlmsg_end(msg, hdr);
8844
8845 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8846 nl80211_mlme_mcgrp.id, gfp);
8847 return;
8848
8849 nla_put_failure:
8850 genlmsg_cancel(msg, hdr);
8851 nlmsg_free(msg);
8852 }
8853
8854 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8855 struct net_device *netdev, int index,
8856 const u8 *bssid, bool preauth, gfp_t gfp)
8857 {
8858 struct sk_buff *msg;
8859 struct nlattr *attr;
8860 void *hdr;
8861
8862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8863 if (!msg)
8864 return;
8865
8866 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8867 if (!hdr) {
8868 nlmsg_free(msg);
8869 return;
8870 }
8871
8872 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8873 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8874 goto nla_put_failure;
8875
8876 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8877 if (!attr)
8878 goto nla_put_failure;
8879
8880 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8881 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8882 (preauth &&
8883 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8884 goto nla_put_failure;
8885
8886 nla_nest_end(msg, attr);
8887
8888 genlmsg_end(msg, hdr);
8889
8890 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8891 nl80211_mlme_mcgrp.id, gfp);
8892 return;
8893
8894 nla_put_failure:
8895 genlmsg_cancel(msg, hdr);
8896 nlmsg_free(msg);
8897 }
8898
8899 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8900 struct net_device *netdev,
8901 struct cfg80211_chan_def *chandef, gfp_t gfp)
8902 {
8903 struct sk_buff *msg;
8904 void *hdr;
8905
8906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8907 if (!msg)
8908 return;
8909
8910 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8911 if (!hdr) {
8912 nlmsg_free(msg);
8913 return;
8914 }
8915
8916 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8917 goto nla_put_failure;
8918
8919 if (nl80211_send_chandef(msg, chandef))
8920 goto nla_put_failure;
8921
8922 genlmsg_end(msg, hdr);
8923
8924 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8925 nl80211_mlme_mcgrp.id, gfp);
8926 return;
8927
8928 nla_put_failure:
8929 genlmsg_cancel(msg, hdr);
8930 nlmsg_free(msg);
8931 }
8932
8933 void
8934 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8935 struct net_device *netdev, const u8 *peer,
8936 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8937 {
8938 struct sk_buff *msg;
8939 struct nlattr *pinfoattr;
8940 void *hdr;
8941
8942 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8943 if (!msg)
8944 return;
8945
8946 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8947 if (!hdr) {
8948 nlmsg_free(msg);
8949 return;
8950 }
8951
8952 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8953 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8954 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8955 goto nla_put_failure;
8956
8957 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8958 if (!pinfoattr)
8959 goto nla_put_failure;
8960
8961 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8962 goto nla_put_failure;
8963
8964 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8965 goto nla_put_failure;
8966
8967 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8968 goto nla_put_failure;
8969
8970 nla_nest_end(msg, pinfoattr);
8971
8972 genlmsg_end(msg, hdr);
8973
8974 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8975 nl80211_mlme_mcgrp.id, gfp);
8976 return;
8977
8978 nla_put_failure:
8979 genlmsg_cancel(msg, hdr);
8980 nlmsg_free(msg);
8981 }
8982
8983 void
8984 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8985 struct net_device *netdev, const u8 *peer,
8986 u32 num_packets, gfp_t gfp)
8987 {
8988 struct sk_buff *msg;
8989 struct nlattr *pinfoattr;
8990 void *hdr;
8991
8992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8993 if (!msg)
8994 return;
8995
8996 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8997 if (!hdr) {
8998 nlmsg_free(msg);
8999 return;
9000 }
9001
9002 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9003 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9004 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
9005 goto nla_put_failure;
9006
9007 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
9008 if (!pinfoattr)
9009 goto nla_put_failure;
9010
9011 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
9012 goto nla_put_failure;
9013
9014 nla_nest_end(msg, pinfoattr);
9015
9016 genlmsg_end(msg, hdr);
9017
9018 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9019 nl80211_mlme_mcgrp.id, gfp);
9020 return;
9021
9022 nla_put_failure:
9023 genlmsg_cancel(msg, hdr);
9024 nlmsg_free(msg);
9025 }
9026
9027 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
9028 u64 cookie, bool acked, gfp_t gfp)
9029 {
9030 struct wireless_dev *wdev = dev->ieee80211_ptr;
9031 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9032 struct sk_buff *msg;
9033 void *hdr;
9034 int err;
9035
9036 trace_cfg80211_probe_status(dev, addr, cookie, acked);
9037
9038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9039
9040 if (!msg)
9041 return;
9042
9043 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
9044 if (!hdr) {
9045 nlmsg_free(msg);
9046 return;
9047 }
9048
9049 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9050 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9051 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9052 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
9053 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
9054 goto nla_put_failure;
9055
9056 err = genlmsg_end(msg, hdr);
9057 if (err < 0) {
9058 nlmsg_free(msg);
9059 return;
9060 }
9061
9062 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9063 nl80211_mlme_mcgrp.id, gfp);
9064 return;
9065
9066 nla_put_failure:
9067 genlmsg_cancel(msg, hdr);
9068 nlmsg_free(msg);
9069 }
9070 EXPORT_SYMBOL(cfg80211_probe_status);
9071
9072 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
9073 const u8 *frame, size_t len,
9074 int freq, int sig_dbm)
9075 {
9076 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9077 struct sk_buff *msg;
9078 void *hdr;
9079 struct cfg80211_beacon_registration *reg;
9080
9081 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
9082
9083 spin_lock_bh(&rdev->beacon_registrations_lock);
9084 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9085 msg = nlmsg_new(len + 100, GFP_ATOMIC);
9086 if (!msg) {
9087 spin_unlock_bh(&rdev->beacon_registrations_lock);
9088 return;
9089 }
9090
9091 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9092 if (!hdr)
9093 goto nla_put_failure;
9094
9095 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9096 (freq &&
9097 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
9098 (sig_dbm &&
9099 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9100 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
9101 goto nla_put_failure;
9102
9103 genlmsg_end(msg, hdr);
9104
9105 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
9106 }
9107 spin_unlock_bh(&rdev->beacon_registrations_lock);
9108 return;
9109
9110 nla_put_failure:
9111 spin_unlock_bh(&rdev->beacon_registrations_lock);
9112 if (hdr)
9113 genlmsg_cancel(msg, hdr);
9114 nlmsg_free(msg);
9115 }
9116 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
9117
9118 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
9119 enum nl80211_tdls_operation oper,
9120 u16 reason_code, gfp_t gfp)
9121 {
9122 struct wireless_dev *wdev = dev->ieee80211_ptr;
9123 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9124 struct sk_buff *msg;
9125 void *hdr;
9126 int err;
9127
9128 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
9129 reason_code);
9130
9131 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9132 if (!msg)
9133 return;
9134
9135 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
9136 if (!hdr) {
9137 nlmsg_free(msg);
9138 return;
9139 }
9140
9141 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9142 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9143 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
9144 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
9145 (reason_code > 0 &&
9146 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
9147 goto nla_put_failure;
9148
9149 err = genlmsg_end(msg, hdr);
9150 if (err < 0) {
9151 nlmsg_free(msg);
9152 return;
9153 }
9154
9155 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9156 nl80211_mlme_mcgrp.id, gfp);
9157 return;
9158
9159 nla_put_failure:
9160 genlmsg_cancel(msg, hdr);
9161 nlmsg_free(msg);
9162 }
9163 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
9164
9165 static int nl80211_netlink_notify(struct notifier_block * nb,
9166 unsigned long state,
9167 void *_notify)
9168 {
9169 struct netlink_notify *notify = _notify;
9170 struct cfg80211_registered_device *rdev;
9171 struct wireless_dev *wdev;
9172 struct cfg80211_beacon_registration *reg, *tmp;
9173
9174 if (state != NETLINK_URELEASE)
9175 return NOTIFY_DONE;
9176
9177 rcu_read_lock();
9178
9179 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
9180 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
9181 cfg80211_mlme_unregister_socket(wdev, notify->portid);
9182
9183 spin_lock_bh(&rdev->beacon_registrations_lock);
9184 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
9185 list) {
9186 if (reg->nlportid == notify->portid) {
9187 list_del(&reg->list);
9188 kfree(reg);
9189 break;
9190 }
9191 }
9192 spin_unlock_bh(&rdev->beacon_registrations_lock);
9193 }
9194
9195 rcu_read_unlock();
9196
9197 return NOTIFY_DONE;
9198 }
9199
9200 static struct notifier_block nl80211_netlink_notifier = {
9201 .notifier_call = nl80211_netlink_notify,
9202 };
9203
9204 /* initialisation/exit functions */
9205
9206 int nl80211_init(void)
9207 {
9208 int err;
9209
9210 err = genl_register_family_with_ops(&nl80211_fam,
9211 nl80211_ops, ARRAY_SIZE(nl80211_ops));
9212 if (err)
9213 return err;
9214
9215 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
9216 if (err)
9217 goto err_out;
9218
9219 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
9220 if (err)
9221 goto err_out;
9222
9223 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
9224 if (err)
9225 goto err_out;
9226
9227 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
9228 if (err)
9229 goto err_out;
9230
9231 #ifdef CONFIG_NL80211_TESTMODE
9232 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
9233 if (err)
9234 goto err_out;
9235 #endif
9236
9237 err = netlink_register_notifier(&nl80211_netlink_notifier);
9238 if (err)
9239 goto err_out;
9240
9241 return 0;
9242 err_out:
9243 genl_unregister_family(&nl80211_fam);
9244 return err;
9245 }
9246
9247 void nl80211_exit(void)
9248 {
9249 netlink_unregister_notifier(&nl80211_netlink_notifier);
9250 genl_unregister_family(&nl80211_fam);
9251 }
CRIS linux kernel tree