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cfg80211/mac80211: clean up cfg80211 SME APIs
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* returns ERR_PTR values */
51 static struct wireless_dev *
52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53 {
54 struct cfg80211_registered_device *rdev;
55 struct wireless_dev *result = NULL;
56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
58 u64 wdev_id;
59 int wiphy_idx = -1;
60 int ifidx = -1;
61
62 ASSERT_RTNL();
63
64 if (!have_ifidx && !have_wdev_id)
65 return ERR_PTR(-EINVAL);
66
67 if (have_ifidx)
68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
69 if (have_wdev_id) {
70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
71 wiphy_idx = wdev_id >> 32;
72 }
73
74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
75 struct wireless_dev *wdev;
76
77 if (wiphy_net(&rdev->wiphy) != netns)
78 continue;
79
80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
81 continue;
82
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
95 if (result)
96 break;
97 }
98
99 if (result)
100 return result;
101 return ERR_PTR(-ENODEV);
102 }
103
104 static struct cfg80211_registered_device *
105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
106 {
107 struct cfg80211_registered_device *rdev = NULL, *tmp;
108 struct net_device *netdev;
109
110 ASSERT_RTNL();
111
112 if (!attrs[NL80211_ATTR_WIPHY] &&
113 !attrs[NL80211_ATTR_IFINDEX] &&
114 !attrs[NL80211_ATTR_WDEV])
115 return ERR_PTR(-EINVAL);
116
117 if (attrs[NL80211_ATTR_WIPHY])
118 rdev = cfg80211_rdev_by_wiphy_idx(
119 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
120
121 if (attrs[NL80211_ATTR_WDEV]) {
122 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
123 struct wireless_dev *wdev;
124 bool found = false;
125
126 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
127 if (tmp) {
128 /* make sure wdev exists */
129 list_for_each_entry(wdev, &tmp->wdev_list, list) {
130 if (wdev->identifier != (u32)wdev_id)
131 continue;
132 found = true;
133 break;
134 }
135
136 if (!found)
137 tmp = NULL;
138
139 if (rdev && tmp != rdev)
140 return ERR_PTR(-EINVAL);
141 rdev = tmp;
142 }
143 }
144
145 if (attrs[NL80211_ATTR_IFINDEX]) {
146 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
147 netdev = dev_get_by_index(netns, ifindex);
148 if (netdev) {
149 if (netdev->ieee80211_ptr)
150 tmp = wiphy_to_dev(
151 netdev->ieee80211_ptr->wiphy);
152 else
153 tmp = NULL;
154
155 dev_put(netdev);
156
157 /* not wireless device -- return error */
158 if (!tmp)
159 return ERR_PTR(-EINVAL);
160
161 /* mismatch -- return error */
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164
165 rdev = tmp;
166 }
167 }
168
169 if (!rdev)
170 return ERR_PTR(-ENODEV);
171
172 if (netns != wiphy_net(&rdev->wiphy))
173 return ERR_PTR(-ENODEV);
174
175 return rdev;
176 }
177
178 /*
179 * This function returns a pointer to the driver
180 * that the genl_info item that is passed refers to.
181 *
182 * The result of this can be a PTR_ERR and hence must
183 * be checked with IS_ERR() for errors.
184 */
185 static struct cfg80211_registered_device *
186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
187 {
188 return __cfg80211_rdev_from_attrs(netns, info->attrs);
189 }
190
191 /* policy for the attributes */
192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
193 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
194 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
195 .len = 20-1 },
196 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
197
198 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
199 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
200 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
201 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
202 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
203
204 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
205 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
206 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
207 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
208 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
209
210 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
211 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
212 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
213
214 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
215 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
216
217 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
218 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
219 .len = WLAN_MAX_KEY_LEN },
220 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
221 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
222 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
223 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
224 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
225
226 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
227 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
228 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
229 .len = IEEE80211_MAX_DATA_LEN },
230 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
231 .len = IEEE80211_MAX_DATA_LEN },
232 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
233 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
234 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
235 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
236 .len = NL80211_MAX_SUPP_RATES },
237 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
238 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
239 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
240 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
241 .len = IEEE80211_MAX_MESH_ID_LEN },
242 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
243
244 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
245 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
246
247 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
248 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
249 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
250 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
251 .len = NL80211_MAX_SUPP_RATES },
252 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
253
254 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
255 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
256
257 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
258
259 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
260 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
261 .len = IEEE80211_MAX_DATA_LEN },
262 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
263 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
264
265 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
266 .len = IEEE80211_MAX_SSID_LEN },
267 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
268 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
269 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
270 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
271 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
272 [NL80211_ATTR_STA_FLAGS2] = {
273 .len = sizeof(struct nl80211_sta_flag_update),
274 },
275 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
276 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
277 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
278 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
279 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
280 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
281 [NL80211_ATTR_PID] = { .type = NLA_U32 },
282 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
283 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
284 .len = WLAN_PMKID_LEN },
285 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
286 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
287 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
288 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_DATA_LEN },
290 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
291 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
292 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
293 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
294 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
295 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
296 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
297 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
299 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
300 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
301 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
302 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
303 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
304 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
305 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
306 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
307 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
308 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
309 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
314 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
315 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
317 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
318 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
319 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
320 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
321 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
322 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
325 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
326 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
327 .len = NL80211_HT_CAPABILITY_LEN
328 },
329 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
330 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
331 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
332 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
333 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
334 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
335 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
336 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
337 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
338 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
339 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
340 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
341 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
342 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
343 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
344 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
346 .len = NL80211_VHT_CAPABILITY_LEN,
347 },
348 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
349 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
350 .len = IEEE80211_MAX_DATA_LEN },
351 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
352 };
353
354 /* policy for the key attributes */
355 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
356 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
357 [NL80211_KEY_IDX] = { .type = NLA_U8 },
358 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
359 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
360 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
361 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
362 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
363 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
364 };
365
366 /* policy for the key default flags */
367 static const struct nla_policy
368 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
369 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
370 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
371 };
372
373 /* policy for WoWLAN attributes */
374 static const struct nla_policy
375 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
376 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
377 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
378 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
379 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
380 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
381 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
382 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
383 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
384 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
385 };
386
387 static const struct nla_policy
388 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
389 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
390 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
391 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
392 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
393 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
394 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
395 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
396 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
397 },
398 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
399 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
400 },
401 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
402 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
403 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
404 };
405
406 /* policy for GTK rekey offload attributes */
407 static const struct nla_policy
408 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
409 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
410 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
411 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
412 };
413
414 static const struct nla_policy
415 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
416 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
417 .len = IEEE80211_MAX_SSID_LEN },
418 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
419 };
420
421 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
422 struct netlink_callback *cb,
423 struct cfg80211_registered_device **rdev,
424 struct wireless_dev **wdev)
425 {
426 int err;
427
428 rtnl_lock();
429
430 if (!cb->args[0]) {
431 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
432 nl80211_fam.attrbuf, nl80211_fam.maxattr,
433 nl80211_policy);
434 if (err)
435 goto out_unlock;
436
437 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
438 nl80211_fam.attrbuf);
439 if (IS_ERR(*wdev)) {
440 err = PTR_ERR(*wdev);
441 goto out_unlock;
442 }
443 *rdev = wiphy_to_dev((*wdev)->wiphy);
444 cb->args[0] = (*rdev)->wiphy_idx;
445 cb->args[1] = (*wdev)->identifier;
446 } else {
447 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
448 struct wireless_dev *tmp;
449
450 if (!wiphy) {
451 err = -ENODEV;
452 goto out_unlock;
453 }
454 *rdev = wiphy_to_dev(wiphy);
455 *wdev = NULL;
456
457 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
458 if (tmp->identifier == cb->args[1]) {
459 *wdev = tmp;
460 break;
461 }
462 }
463
464 if (!*wdev) {
465 err = -ENODEV;
466 goto out_unlock;
467 }
468 }
469
470 return 0;
471 out_unlock:
472 rtnl_unlock();
473 return err;
474 }
475
476 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
477 {
478 rtnl_unlock();
479 }
480
481 /* IE validation */
482 static bool is_valid_ie_attr(const struct nlattr *attr)
483 {
484 const u8 *pos;
485 int len;
486
487 if (!attr)
488 return true;
489
490 pos = nla_data(attr);
491 len = nla_len(attr);
492
493 while (len) {
494 u8 elemlen;
495
496 if (len < 2)
497 return false;
498 len -= 2;
499
500 elemlen = pos[1];
501 if (elemlen > len)
502 return false;
503
504 len -= elemlen;
505 pos += 2 + elemlen;
506 }
507
508 return true;
509 }
510
511 /* message building helper */
512 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
513 int flags, u8 cmd)
514 {
515 /* since there is no private header just add the generic one */
516 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
517 }
518
519 static int nl80211_msg_put_channel(struct sk_buff *msg,
520 struct ieee80211_channel *chan,
521 bool large)
522 {
523 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
524 chan->center_freq))
525 goto nla_put_failure;
526
527 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
528 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
529 goto nla_put_failure;
530 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
531 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
532 goto nla_put_failure;
533 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
534 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
535 goto nla_put_failure;
536 if (chan->flags & IEEE80211_CHAN_RADAR) {
537 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
538 goto nla_put_failure;
539 if (large) {
540 u32 time;
541
542 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
543
544 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
545 chan->dfs_state))
546 goto nla_put_failure;
547 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
548 time))
549 goto nla_put_failure;
550 }
551 }
552
553 if (large) {
554 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
555 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
556 goto nla_put_failure;
557 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
558 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
559 goto nla_put_failure;
560 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
561 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
562 goto nla_put_failure;
563 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
564 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
565 goto nla_put_failure;
566 }
567
568 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
569 DBM_TO_MBM(chan->max_power)))
570 goto nla_put_failure;
571
572 return 0;
573
574 nla_put_failure:
575 return -ENOBUFS;
576 }
577
578 /* netlink command implementations */
579
580 struct key_parse {
581 struct key_params p;
582 int idx;
583 int type;
584 bool def, defmgmt;
585 bool def_uni, def_multi;
586 };
587
588 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
589 {
590 struct nlattr *tb[NL80211_KEY_MAX + 1];
591 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
592 nl80211_key_policy);
593 if (err)
594 return err;
595
596 k->def = !!tb[NL80211_KEY_DEFAULT];
597 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
598
599 if (k->def) {
600 k->def_uni = true;
601 k->def_multi = true;
602 }
603 if (k->defmgmt)
604 k->def_multi = true;
605
606 if (tb[NL80211_KEY_IDX])
607 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
608
609 if (tb[NL80211_KEY_DATA]) {
610 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
611 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
612 }
613
614 if (tb[NL80211_KEY_SEQ]) {
615 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
616 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
617 }
618
619 if (tb[NL80211_KEY_CIPHER])
620 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
621
622 if (tb[NL80211_KEY_TYPE]) {
623 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
624 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
625 return -EINVAL;
626 }
627
628 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
629 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
630 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
631 tb[NL80211_KEY_DEFAULT_TYPES],
632 nl80211_key_default_policy);
633 if (err)
634 return err;
635
636 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
637 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
638 }
639
640 return 0;
641 }
642
643 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
644 {
645 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
646 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
647 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
648 }
649
650 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
651 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
652 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
653 }
654
655 if (info->attrs[NL80211_ATTR_KEY_IDX])
656 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
657
658 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
659 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
660
661 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
662 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
663
664 if (k->def) {
665 k->def_uni = true;
666 k->def_multi = true;
667 }
668 if (k->defmgmt)
669 k->def_multi = true;
670
671 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
672 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
673 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
674 return -EINVAL;
675 }
676
677 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
678 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
679 int err = nla_parse_nested(
680 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
681 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
682 nl80211_key_default_policy);
683 if (err)
684 return err;
685
686 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
687 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
688 }
689
690 return 0;
691 }
692
693 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
694 {
695 int err;
696
697 memset(k, 0, sizeof(*k));
698 k->idx = -1;
699 k->type = -1;
700
701 if (info->attrs[NL80211_ATTR_KEY])
702 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
703 else
704 err = nl80211_parse_key_old(info, k);
705
706 if (err)
707 return err;
708
709 if (k->def && k->defmgmt)
710 return -EINVAL;
711
712 if (k->defmgmt) {
713 if (k->def_uni || !k->def_multi)
714 return -EINVAL;
715 }
716
717 if (k->idx != -1) {
718 if (k->defmgmt) {
719 if (k->idx < 4 || k->idx > 5)
720 return -EINVAL;
721 } else if (k->def) {
722 if (k->idx < 0 || k->idx > 3)
723 return -EINVAL;
724 } else {
725 if (k->idx < 0 || k->idx > 5)
726 return -EINVAL;
727 }
728 }
729
730 return 0;
731 }
732
733 static struct cfg80211_cached_keys *
734 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
735 struct nlattr *keys, bool *no_ht)
736 {
737 struct key_parse parse;
738 struct nlattr *key;
739 struct cfg80211_cached_keys *result;
740 int rem, err, def = 0;
741
742 result = kzalloc(sizeof(*result), GFP_KERNEL);
743 if (!result)
744 return ERR_PTR(-ENOMEM);
745
746 result->def = -1;
747 result->defmgmt = -1;
748
749 nla_for_each_nested(key, keys, rem) {
750 memset(&parse, 0, sizeof(parse));
751 parse.idx = -1;
752
753 err = nl80211_parse_key_new(key, &parse);
754 if (err)
755 goto error;
756 err = -EINVAL;
757 if (!parse.p.key)
758 goto error;
759 if (parse.idx < 0 || parse.idx > 4)
760 goto error;
761 if (parse.def) {
762 if (def)
763 goto error;
764 def = 1;
765 result->def = parse.idx;
766 if (!parse.def_uni || !parse.def_multi)
767 goto error;
768 } else if (parse.defmgmt)
769 goto error;
770 err = cfg80211_validate_key_settings(rdev, &parse.p,
771 parse.idx, false, NULL);
772 if (err)
773 goto error;
774 result->params[parse.idx].cipher = parse.p.cipher;
775 result->params[parse.idx].key_len = parse.p.key_len;
776 result->params[parse.idx].key = result->data[parse.idx];
777 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
778
779 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
780 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
781 if (no_ht)
782 *no_ht = true;
783 }
784 }
785
786 return result;
787 error:
788 kfree(result);
789 return ERR_PTR(err);
790 }
791
792 static int nl80211_key_allowed(struct wireless_dev *wdev)
793 {
794 ASSERT_WDEV_LOCK(wdev);
795
796 switch (wdev->iftype) {
797 case NL80211_IFTYPE_AP:
798 case NL80211_IFTYPE_AP_VLAN:
799 case NL80211_IFTYPE_P2P_GO:
800 case NL80211_IFTYPE_MESH_POINT:
801 break;
802 case NL80211_IFTYPE_ADHOC:
803 if (!wdev->current_bss)
804 return -ENOLINK;
805 break;
806 case NL80211_IFTYPE_STATION:
807 case NL80211_IFTYPE_P2P_CLIENT:
808 if (wdev->sme_state != CFG80211_SME_CONNECTED)
809 return -ENOLINK;
810 break;
811 default:
812 return -EINVAL;
813 }
814
815 return 0;
816 }
817
818 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
819 {
820 struct nlattr *nl_modes = nla_nest_start(msg, attr);
821 int i;
822
823 if (!nl_modes)
824 goto nla_put_failure;
825
826 i = 0;
827 while (ifmodes) {
828 if ((ifmodes & 1) && nla_put_flag(msg, i))
829 goto nla_put_failure;
830 ifmodes >>= 1;
831 i++;
832 }
833
834 nla_nest_end(msg, nl_modes);
835 return 0;
836
837 nla_put_failure:
838 return -ENOBUFS;
839 }
840
841 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
842 struct sk_buff *msg,
843 bool large)
844 {
845 struct nlattr *nl_combis;
846 int i, j;
847
848 nl_combis = nla_nest_start(msg,
849 NL80211_ATTR_INTERFACE_COMBINATIONS);
850 if (!nl_combis)
851 goto nla_put_failure;
852
853 for (i = 0; i < wiphy->n_iface_combinations; i++) {
854 const struct ieee80211_iface_combination *c;
855 struct nlattr *nl_combi, *nl_limits;
856
857 c = &wiphy->iface_combinations[i];
858
859 nl_combi = nla_nest_start(msg, i + 1);
860 if (!nl_combi)
861 goto nla_put_failure;
862
863 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
864 if (!nl_limits)
865 goto nla_put_failure;
866
867 for (j = 0; j < c->n_limits; j++) {
868 struct nlattr *nl_limit;
869
870 nl_limit = nla_nest_start(msg, j + 1);
871 if (!nl_limit)
872 goto nla_put_failure;
873 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
874 c->limits[j].max))
875 goto nla_put_failure;
876 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
877 c->limits[j].types))
878 goto nla_put_failure;
879 nla_nest_end(msg, nl_limit);
880 }
881
882 nla_nest_end(msg, nl_limits);
883
884 if (c->beacon_int_infra_match &&
885 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
886 goto nla_put_failure;
887 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
888 c->num_different_channels) ||
889 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
890 c->max_interfaces))
891 goto nla_put_failure;
892 if (large &&
893 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
894 c->radar_detect_widths))
895 goto nla_put_failure;
896
897 nla_nest_end(msg, nl_combi);
898 }
899
900 nla_nest_end(msg, nl_combis);
901
902 return 0;
903 nla_put_failure:
904 return -ENOBUFS;
905 }
906
907 #ifdef CONFIG_PM
908 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
909 struct sk_buff *msg)
910 {
911 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
912 struct nlattr *nl_tcp;
913
914 if (!tcp)
915 return 0;
916
917 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
918 if (!nl_tcp)
919 return -ENOBUFS;
920
921 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
922 tcp->data_payload_max))
923 return -ENOBUFS;
924
925 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
926 tcp->data_payload_max))
927 return -ENOBUFS;
928
929 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
930 return -ENOBUFS;
931
932 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
933 sizeof(*tcp->tok), tcp->tok))
934 return -ENOBUFS;
935
936 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
937 tcp->data_interval_max))
938 return -ENOBUFS;
939
940 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
941 tcp->wake_payload_max))
942 return -ENOBUFS;
943
944 nla_nest_end(msg, nl_tcp);
945 return 0;
946 }
947
948 static int nl80211_send_wowlan(struct sk_buff *msg,
949 struct cfg80211_registered_device *dev,
950 bool large)
951 {
952 struct nlattr *nl_wowlan;
953
954 if (!dev->wiphy.wowlan)
955 return 0;
956
957 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
958 if (!nl_wowlan)
959 return -ENOBUFS;
960
961 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
962 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
963 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
964 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
965 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
966 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
967 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
968 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
969 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
970 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
971 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
972 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
973 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
974 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
975 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
976 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
977 return -ENOBUFS;
978
979 if (dev->wiphy.wowlan->n_patterns) {
980 struct nl80211_wowlan_pattern_support pat = {
981 .max_patterns = dev->wiphy.wowlan->n_patterns,
982 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
983 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
984 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
985 };
986
987 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
988 sizeof(pat), &pat))
989 return -ENOBUFS;
990 }
991
992 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
993 return -ENOBUFS;
994
995 nla_nest_end(msg, nl_wowlan);
996
997 return 0;
998 }
999 #endif
1000
1001 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1002 struct ieee80211_supported_band *sband)
1003 {
1004 struct nlattr *nl_rates, *nl_rate;
1005 struct ieee80211_rate *rate;
1006 int i;
1007
1008 /* add HT info */
1009 if (sband->ht_cap.ht_supported &&
1010 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1011 sizeof(sband->ht_cap.mcs),
1012 &sband->ht_cap.mcs) ||
1013 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1014 sband->ht_cap.cap) ||
1015 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1016 sband->ht_cap.ampdu_factor) ||
1017 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1018 sband->ht_cap.ampdu_density)))
1019 return -ENOBUFS;
1020
1021 /* add VHT info */
1022 if (sband->vht_cap.vht_supported &&
1023 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1024 sizeof(sband->vht_cap.vht_mcs),
1025 &sband->vht_cap.vht_mcs) ||
1026 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1027 sband->vht_cap.cap)))
1028 return -ENOBUFS;
1029
1030 /* add bitrates */
1031 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1032 if (!nl_rates)
1033 return -ENOBUFS;
1034
1035 for (i = 0; i < sband->n_bitrates; i++) {
1036 nl_rate = nla_nest_start(msg, i);
1037 if (!nl_rate)
1038 return -ENOBUFS;
1039
1040 rate = &sband->bitrates[i];
1041 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1042 rate->bitrate))
1043 return -ENOBUFS;
1044 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1045 nla_put_flag(msg,
1046 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1047 return -ENOBUFS;
1048
1049 nla_nest_end(msg, nl_rate);
1050 }
1051
1052 nla_nest_end(msg, nl_rates);
1053
1054 return 0;
1055 }
1056
1057 static int
1058 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1059 const struct ieee80211_txrx_stypes *mgmt_stypes)
1060 {
1061 u16 stypes;
1062 struct nlattr *nl_ftypes, *nl_ifs;
1063 enum nl80211_iftype ift;
1064 int i;
1065
1066 if (!mgmt_stypes)
1067 return 0;
1068
1069 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1070 if (!nl_ifs)
1071 return -ENOBUFS;
1072
1073 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1074 nl_ftypes = nla_nest_start(msg, ift);
1075 if (!nl_ftypes)
1076 return -ENOBUFS;
1077 i = 0;
1078 stypes = mgmt_stypes[ift].tx;
1079 while (stypes) {
1080 if ((stypes & 1) &&
1081 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1082 (i << 4) | IEEE80211_FTYPE_MGMT))
1083 return -ENOBUFS;
1084 stypes >>= 1;
1085 i++;
1086 }
1087 nla_nest_end(msg, nl_ftypes);
1088 }
1089
1090 nla_nest_end(msg, nl_ifs);
1091
1092 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1093 if (!nl_ifs)
1094 return -ENOBUFS;
1095
1096 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1097 nl_ftypes = nla_nest_start(msg, ift);
1098 if (!nl_ftypes)
1099 return -ENOBUFS;
1100 i = 0;
1101 stypes = mgmt_stypes[ift].rx;
1102 while (stypes) {
1103 if ((stypes & 1) &&
1104 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1105 (i << 4) | IEEE80211_FTYPE_MGMT))
1106 return -ENOBUFS;
1107 stypes >>= 1;
1108 i++;
1109 }
1110 nla_nest_end(msg, nl_ftypes);
1111 }
1112 nla_nest_end(msg, nl_ifs);
1113
1114 return 0;
1115 }
1116
1117 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1118 struct sk_buff *msg, u32 portid, u32 seq,
1119 int flags, bool split, long *split_start,
1120 long *band_start, long *chan_start)
1121 {
1122 void *hdr;
1123 struct nlattr *nl_bands, *nl_band;
1124 struct nlattr *nl_freqs, *nl_freq;
1125 struct nlattr *nl_cmds;
1126 enum ieee80211_band band;
1127 struct ieee80211_channel *chan;
1128 int i;
1129 const struct ieee80211_txrx_stypes *mgmt_stypes =
1130 dev->wiphy.mgmt_stypes;
1131 long start = 0, start_chan = 0, start_band = 0;
1132 u32 features;
1133
1134 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1135 if (!hdr)
1136 return -ENOBUFS;
1137
1138 /* allow always using the variables */
1139 if (!split) {
1140 split_start = &start;
1141 band_start = &start_band;
1142 chan_start = &start_chan;
1143 }
1144
1145 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1146 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1147 wiphy_name(&dev->wiphy)) ||
1148 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1149 cfg80211_rdev_list_generation))
1150 goto nla_put_failure;
1151
1152 switch (*split_start) {
1153 case 0:
1154 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1155 dev->wiphy.retry_short) ||
1156 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1157 dev->wiphy.retry_long) ||
1158 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1159 dev->wiphy.frag_threshold) ||
1160 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1161 dev->wiphy.rts_threshold) ||
1162 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1163 dev->wiphy.coverage_class) ||
1164 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1165 dev->wiphy.max_scan_ssids) ||
1166 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1167 dev->wiphy.max_sched_scan_ssids) ||
1168 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1169 dev->wiphy.max_scan_ie_len) ||
1170 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1171 dev->wiphy.max_sched_scan_ie_len) ||
1172 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1173 dev->wiphy.max_match_sets))
1174 goto nla_put_failure;
1175
1176 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1177 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1178 goto nla_put_failure;
1179 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1180 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1181 goto nla_put_failure;
1182 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1183 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1184 goto nla_put_failure;
1185 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1186 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1187 goto nla_put_failure;
1188 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1189 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1190 goto nla_put_failure;
1191 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1192 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1193 goto nla_put_failure;
1194
1195 (*split_start)++;
1196 if (split)
1197 break;
1198 case 1:
1199 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1200 sizeof(u32) * dev->wiphy.n_cipher_suites,
1201 dev->wiphy.cipher_suites))
1202 goto nla_put_failure;
1203
1204 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1205 dev->wiphy.max_num_pmkids))
1206 goto nla_put_failure;
1207
1208 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1209 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1210 goto nla_put_failure;
1211
1212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1213 dev->wiphy.available_antennas_tx) ||
1214 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1215 dev->wiphy.available_antennas_rx))
1216 goto nla_put_failure;
1217
1218 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1219 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1220 dev->wiphy.probe_resp_offload))
1221 goto nla_put_failure;
1222
1223 if ((dev->wiphy.available_antennas_tx ||
1224 dev->wiphy.available_antennas_rx) &&
1225 dev->ops->get_antenna) {
1226 u32 tx_ant = 0, rx_ant = 0;
1227 int res;
1228 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1229 if (!res) {
1230 if (nla_put_u32(msg,
1231 NL80211_ATTR_WIPHY_ANTENNA_TX,
1232 tx_ant) ||
1233 nla_put_u32(msg,
1234 NL80211_ATTR_WIPHY_ANTENNA_RX,
1235 rx_ant))
1236 goto nla_put_failure;
1237 }
1238 }
1239
1240 (*split_start)++;
1241 if (split)
1242 break;
1243 case 2:
1244 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1245 dev->wiphy.interface_modes))
1246 goto nla_put_failure;
1247 (*split_start)++;
1248 if (split)
1249 break;
1250 case 3:
1251 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1252 if (!nl_bands)
1253 goto nla_put_failure;
1254
1255 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1256 struct ieee80211_supported_band *sband;
1257
1258 sband = dev->wiphy.bands[band];
1259
1260 if (!sband)
1261 continue;
1262
1263 nl_band = nla_nest_start(msg, band);
1264 if (!nl_band)
1265 goto nla_put_failure;
1266
1267 switch (*chan_start) {
1268 case 0:
1269 if (nl80211_send_band_rateinfo(msg, sband))
1270 goto nla_put_failure;
1271 (*chan_start)++;
1272 if (split)
1273 break;
1274 default:
1275 /* add frequencies */
1276 nl_freqs = nla_nest_start(
1277 msg, NL80211_BAND_ATTR_FREQS);
1278 if (!nl_freqs)
1279 goto nla_put_failure;
1280
1281 for (i = *chan_start - 1;
1282 i < sband->n_channels;
1283 i++) {
1284 nl_freq = nla_nest_start(msg, i);
1285 if (!nl_freq)
1286 goto nla_put_failure;
1287
1288 chan = &sband->channels[i];
1289
1290 if (nl80211_msg_put_channel(msg, chan,
1291 split))
1292 goto nla_put_failure;
1293
1294 nla_nest_end(msg, nl_freq);
1295 if (split)
1296 break;
1297 }
1298 if (i < sband->n_channels)
1299 *chan_start = i + 2;
1300 else
1301 *chan_start = 0;
1302 nla_nest_end(msg, nl_freqs);
1303 }
1304
1305 nla_nest_end(msg, nl_band);
1306
1307 if (split) {
1308 /* start again here */
1309 if (*chan_start)
1310 band--;
1311 break;
1312 }
1313 }
1314 nla_nest_end(msg, nl_bands);
1315
1316 if (band < IEEE80211_NUM_BANDS)
1317 *band_start = band + 1;
1318 else
1319 *band_start = 0;
1320
1321 /* if bands & channels are done, continue outside */
1322 if (*band_start == 0 && *chan_start == 0)
1323 (*split_start)++;
1324 if (split)
1325 break;
1326 case 4:
1327 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1328 if (!nl_cmds)
1329 goto nla_put_failure;
1330
1331 i = 0;
1332 #define CMD(op, n) \
1333 do { \
1334 if (dev->ops->op) { \
1335 i++; \
1336 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1337 goto nla_put_failure; \
1338 } \
1339 } while (0)
1340
1341 CMD(add_virtual_intf, NEW_INTERFACE);
1342 CMD(change_virtual_intf, SET_INTERFACE);
1343 CMD(add_key, NEW_KEY);
1344 CMD(start_ap, START_AP);
1345 CMD(add_station, NEW_STATION);
1346 CMD(add_mpath, NEW_MPATH);
1347 CMD(update_mesh_config, SET_MESH_CONFIG);
1348 CMD(change_bss, SET_BSS);
1349 CMD(auth, AUTHENTICATE);
1350 CMD(assoc, ASSOCIATE);
1351 CMD(deauth, DEAUTHENTICATE);
1352 CMD(disassoc, DISASSOCIATE);
1353 CMD(join_ibss, JOIN_IBSS);
1354 CMD(join_mesh, JOIN_MESH);
1355 CMD(set_pmksa, SET_PMKSA);
1356 CMD(del_pmksa, DEL_PMKSA);
1357 CMD(flush_pmksa, FLUSH_PMKSA);
1358 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1359 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1360 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1361 CMD(mgmt_tx, FRAME);
1362 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1363 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1364 i++;
1365 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1366 goto nla_put_failure;
1367 }
1368 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1369 dev->ops->join_mesh) {
1370 i++;
1371 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1372 goto nla_put_failure;
1373 }
1374 CMD(set_wds_peer, SET_WDS_PEER);
1375 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1376 CMD(tdls_mgmt, TDLS_MGMT);
1377 CMD(tdls_oper, TDLS_OPER);
1378 }
1379 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1380 CMD(sched_scan_start, START_SCHED_SCAN);
1381 CMD(probe_client, PROBE_CLIENT);
1382 CMD(set_noack_map, SET_NOACK_MAP);
1383 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1384 i++;
1385 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1386 goto nla_put_failure;
1387 }
1388 CMD(start_p2p_device, START_P2P_DEVICE);
1389 CMD(set_mcast_rate, SET_MCAST_RATE);
1390 if (split) {
1391 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1392 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1393 }
1394
1395 #ifdef CONFIG_NL80211_TESTMODE
1396 CMD(testmode_cmd, TESTMODE);
1397 #endif
1398
1399 #undef CMD
1400
1401 if (dev->ops->connect || dev->ops->auth) {
1402 i++;
1403 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1404 goto nla_put_failure;
1405 }
1406
1407 if (dev->ops->disconnect || dev->ops->deauth) {
1408 i++;
1409 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1410 goto nla_put_failure;
1411 }
1412
1413 nla_nest_end(msg, nl_cmds);
1414 (*split_start)++;
1415 if (split)
1416 break;
1417 case 5:
1418 if (dev->ops->remain_on_channel &&
1419 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1420 nla_put_u32(msg,
1421 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1422 dev->wiphy.max_remain_on_channel_duration))
1423 goto nla_put_failure;
1424
1425 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1426 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1427 goto nla_put_failure;
1428
1429 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1430 goto nla_put_failure;
1431 (*split_start)++;
1432 if (split)
1433 break;
1434 case 6:
1435 #ifdef CONFIG_PM
1436 if (nl80211_send_wowlan(msg, dev, split))
1437 goto nla_put_failure;
1438 (*split_start)++;
1439 if (split)
1440 break;
1441 #else
1442 (*split_start)++;
1443 #endif
1444 case 7:
1445 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1446 dev->wiphy.software_iftypes))
1447 goto nla_put_failure;
1448
1449 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1450 goto nla_put_failure;
1451
1452 (*split_start)++;
1453 if (split)
1454 break;
1455 case 8:
1456 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1457 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1458 dev->wiphy.ap_sme_capa))
1459 goto nla_put_failure;
1460
1461 features = dev->wiphy.features;
1462 /*
1463 * We can only add the per-channel limit information if the
1464 * dump is split, otherwise it makes it too big. Therefore
1465 * only advertise it in that case.
1466 */
1467 if (split)
1468 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1469 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1470 goto nla_put_failure;
1471
1472 if (dev->wiphy.ht_capa_mod_mask &&
1473 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1474 sizeof(*dev->wiphy.ht_capa_mod_mask),
1475 dev->wiphy.ht_capa_mod_mask))
1476 goto nla_put_failure;
1477
1478 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1479 dev->wiphy.max_acl_mac_addrs &&
1480 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1481 dev->wiphy.max_acl_mac_addrs))
1482 goto nla_put_failure;
1483
1484 /*
1485 * Any information below this point is only available to
1486 * applications that can deal with it being split. This
1487 * helps ensure that newly added capabilities don't break
1488 * older tools by overrunning their buffers.
1489 *
1490 * We still increment split_start so that in the split
1491 * case we'll continue with more data in the next round,
1492 * but break unconditionally so unsplit data stops here.
1493 */
1494 (*split_start)++;
1495 break;
1496 case 9:
1497 if (dev->wiphy.extended_capabilities &&
1498 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1499 dev->wiphy.extended_capabilities_len,
1500 dev->wiphy.extended_capabilities) ||
1501 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1502 dev->wiphy.extended_capabilities_len,
1503 dev->wiphy.extended_capabilities_mask)))
1504 goto nla_put_failure;
1505
1506 if (dev->wiphy.vht_capa_mod_mask &&
1507 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1508 sizeof(*dev->wiphy.vht_capa_mod_mask),
1509 dev->wiphy.vht_capa_mod_mask))
1510 goto nla_put_failure;
1511
1512 /* done */
1513 *split_start = 0;
1514 break;
1515 }
1516 return genlmsg_end(msg, hdr);
1517
1518 nla_put_failure:
1519 genlmsg_cancel(msg, hdr);
1520 return -EMSGSIZE;
1521 }
1522
1523 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1524 {
1525 int idx = 0, ret;
1526 int start = cb->args[0];
1527 struct cfg80211_registered_device *dev;
1528 s64 filter_wiphy = -1;
1529 bool split = false;
1530 struct nlattr **tb = nl80211_fam.attrbuf;
1531 int res;
1532
1533 rtnl_lock();
1534 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1535 tb, nl80211_fam.maxattr, nl80211_policy);
1536 if (res == 0) {
1537 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1538 if (tb[NL80211_ATTR_WIPHY])
1539 filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1540 if (tb[NL80211_ATTR_WDEV])
1541 filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1542 if (tb[NL80211_ATTR_IFINDEX]) {
1543 struct net_device *netdev;
1544 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1545
1546 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1547 if (!netdev)
1548 return -ENODEV;
1549 if (netdev->ieee80211_ptr) {
1550 dev = wiphy_to_dev(
1551 netdev->ieee80211_ptr->wiphy);
1552 filter_wiphy = dev->wiphy_idx;
1553 }
1554 dev_put(netdev);
1555 }
1556 }
1557
1558 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1559 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1560 continue;
1561 if (++idx <= start)
1562 continue;
1563 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1564 continue;
1565 /* attempt to fit multiple wiphy data chunks into the skb */
1566 do {
1567 ret = nl80211_send_wiphy(dev, skb,
1568 NETLINK_CB(cb->skb).portid,
1569 cb->nlh->nlmsg_seq,
1570 NLM_F_MULTI,
1571 split, &cb->args[1],
1572 &cb->args[2],
1573 &cb->args[3]);
1574 if (ret < 0) {
1575 /*
1576 * If sending the wiphy data didn't fit (ENOBUFS
1577 * or EMSGSIZE returned), this SKB is still
1578 * empty (so it's not too big because another
1579 * wiphy dataset is already in the skb) and
1580 * we've not tried to adjust the dump allocation
1581 * yet ... then adjust the alloc size to be
1582 * bigger, and return 1 but with the empty skb.
1583 * This results in an empty message being RX'ed
1584 * in userspace, but that is ignored.
1585 *
1586 * We can then retry with the larger buffer.
1587 */
1588 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1589 !skb->len &&
1590 cb->min_dump_alloc < 4096) {
1591 cb->min_dump_alloc = 4096;
1592 return 1;
1593 }
1594 idx--;
1595 break;
1596 }
1597 } while (cb->args[1] > 0);
1598 break;
1599 }
1600 rtnl_unlock();
1601
1602 cb->args[0] = idx;
1603
1604 return skb->len;
1605 }
1606
1607 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1608 {
1609 struct sk_buff *msg;
1610 struct cfg80211_registered_device *dev = info->user_ptr[0];
1611
1612 msg = nlmsg_new(4096, GFP_KERNEL);
1613 if (!msg)
1614 return -ENOMEM;
1615
1616 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1617 false, NULL, NULL, NULL) < 0) {
1618 nlmsg_free(msg);
1619 return -ENOBUFS;
1620 }
1621
1622 return genlmsg_reply(msg, info);
1623 }
1624
1625 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1626 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1627 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1628 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1629 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1630 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1631 };
1632
1633 static int parse_txq_params(struct nlattr *tb[],
1634 struct ieee80211_txq_params *txq_params)
1635 {
1636 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1637 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1638 !tb[NL80211_TXQ_ATTR_AIFS])
1639 return -EINVAL;
1640
1641 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1642 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1643 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1644 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1645 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1646
1647 if (txq_params->ac >= NL80211_NUM_ACS)
1648 return -EINVAL;
1649
1650 return 0;
1651 }
1652
1653 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1654 {
1655 /*
1656 * You can only set the channel explicitly for WDS interfaces,
1657 * all others have their channel managed via their respective
1658 * "establish a connection" command (connect, join, ...)
1659 *
1660 * For AP/GO and mesh mode, the channel can be set with the
1661 * channel userspace API, but is only stored and passed to the
1662 * low-level driver when the AP starts or the mesh is joined.
1663 * This is for backward compatibility, userspace can also give
1664 * the channel in the start-ap or join-mesh commands instead.
1665 *
1666 * Monitors are special as they are normally slaved to
1667 * whatever else is going on, so they have their own special
1668 * operation to set the monitor channel if possible.
1669 */
1670 return !wdev ||
1671 wdev->iftype == NL80211_IFTYPE_AP ||
1672 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1673 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1674 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1675 }
1676
1677 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1678 struct genl_info *info,
1679 struct cfg80211_chan_def *chandef)
1680 {
1681 u32 control_freq;
1682
1683 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1684 return -EINVAL;
1685
1686 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1687
1688 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1689 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1690 chandef->center_freq1 = control_freq;
1691 chandef->center_freq2 = 0;
1692
1693 /* Primary channel not allowed */
1694 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1695 return -EINVAL;
1696
1697 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1698 enum nl80211_channel_type chantype;
1699
1700 chantype = nla_get_u32(
1701 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1702
1703 switch (chantype) {
1704 case NL80211_CHAN_NO_HT:
1705 case NL80211_CHAN_HT20:
1706 case NL80211_CHAN_HT40PLUS:
1707 case NL80211_CHAN_HT40MINUS:
1708 cfg80211_chandef_create(chandef, chandef->chan,
1709 chantype);
1710 break;
1711 default:
1712 return -EINVAL;
1713 }
1714 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1715 chandef->width =
1716 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1717 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1718 chandef->center_freq1 =
1719 nla_get_u32(
1720 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1721 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1722 chandef->center_freq2 =
1723 nla_get_u32(
1724 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1725 }
1726
1727 if (!cfg80211_chandef_valid(chandef))
1728 return -EINVAL;
1729
1730 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1731 IEEE80211_CHAN_DISABLED))
1732 return -EINVAL;
1733
1734 return 0;
1735 }
1736
1737 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1738 struct wireless_dev *wdev,
1739 struct genl_info *info)
1740 {
1741 struct cfg80211_chan_def chandef;
1742 int result;
1743 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1744
1745 if (wdev)
1746 iftype = wdev->iftype;
1747
1748 if (!nl80211_can_set_dev_channel(wdev))
1749 return -EOPNOTSUPP;
1750
1751 result = nl80211_parse_chandef(rdev, info, &chandef);
1752 if (result)
1753 return result;
1754
1755 switch (iftype) {
1756 case NL80211_IFTYPE_AP:
1757 case NL80211_IFTYPE_P2P_GO:
1758 if (wdev->beacon_interval) {
1759 result = -EBUSY;
1760 break;
1761 }
1762 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1763 result = -EINVAL;
1764 break;
1765 }
1766 wdev->preset_chandef = chandef;
1767 result = 0;
1768 break;
1769 case NL80211_IFTYPE_MESH_POINT:
1770 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1771 break;
1772 case NL80211_IFTYPE_MONITOR:
1773 result = cfg80211_set_monitor_channel(rdev, &chandef);
1774 break;
1775 default:
1776 result = -EINVAL;
1777 }
1778
1779 return result;
1780 }
1781
1782 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1783 {
1784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1785 struct net_device *netdev = info->user_ptr[1];
1786
1787 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1788 }
1789
1790 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1791 {
1792 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1793 struct net_device *dev = info->user_ptr[1];
1794 struct wireless_dev *wdev = dev->ieee80211_ptr;
1795 const u8 *bssid;
1796
1797 if (!info->attrs[NL80211_ATTR_MAC])
1798 return -EINVAL;
1799
1800 if (netif_running(dev))
1801 return -EBUSY;
1802
1803 if (!rdev->ops->set_wds_peer)
1804 return -EOPNOTSUPP;
1805
1806 if (wdev->iftype != NL80211_IFTYPE_WDS)
1807 return -EOPNOTSUPP;
1808
1809 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1810 return rdev_set_wds_peer(rdev, dev, bssid);
1811 }
1812
1813
1814 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1815 {
1816 struct cfg80211_registered_device *rdev;
1817 struct net_device *netdev = NULL;
1818 struct wireless_dev *wdev;
1819 int result = 0, rem_txq_params = 0;
1820 struct nlattr *nl_txq_params;
1821 u32 changed;
1822 u8 retry_short = 0, retry_long = 0;
1823 u32 frag_threshold = 0, rts_threshold = 0;
1824 u8 coverage_class = 0;
1825
1826 ASSERT_RTNL();
1827
1828 /*
1829 * Try to find the wiphy and netdev. Normally this
1830 * function shouldn't need the netdev, but this is
1831 * done for backward compatibility -- previously
1832 * setting the channel was done per wiphy, but now
1833 * it is per netdev. Previous userland like hostapd
1834 * also passed a netdev to set_wiphy, so that it is
1835 * possible to let that go to the right netdev!
1836 */
1837
1838 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1839 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1840
1841 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1842 if (netdev && netdev->ieee80211_ptr)
1843 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1844 else
1845 netdev = NULL;
1846 }
1847
1848 if (!netdev) {
1849 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1850 info->attrs);
1851 if (IS_ERR(rdev))
1852 return PTR_ERR(rdev);
1853 wdev = NULL;
1854 netdev = NULL;
1855 result = 0;
1856 } else
1857 wdev = netdev->ieee80211_ptr;
1858
1859 /*
1860 * end workaround code, by now the rdev is available
1861 * and locked, and wdev may or may not be NULL.
1862 */
1863
1864 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1865 result = cfg80211_dev_rename(
1866 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1867
1868 if (result)
1869 goto bad_res;
1870
1871 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1872 struct ieee80211_txq_params txq_params;
1873 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1874
1875 if (!rdev->ops->set_txq_params) {
1876 result = -EOPNOTSUPP;
1877 goto bad_res;
1878 }
1879
1880 if (!netdev) {
1881 result = -EINVAL;
1882 goto bad_res;
1883 }
1884
1885 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1886 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1887 result = -EINVAL;
1888 goto bad_res;
1889 }
1890
1891 if (!netif_running(netdev)) {
1892 result = -ENETDOWN;
1893 goto bad_res;
1894 }
1895
1896 nla_for_each_nested(nl_txq_params,
1897 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1898 rem_txq_params) {
1899 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1900 nla_data(nl_txq_params),
1901 nla_len(nl_txq_params),
1902 txq_params_policy);
1903 result = parse_txq_params(tb, &txq_params);
1904 if (result)
1905 goto bad_res;
1906
1907 result = rdev_set_txq_params(rdev, netdev,
1908 &txq_params);
1909 if (result)
1910 goto bad_res;
1911 }
1912 }
1913
1914 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1915 result = __nl80211_set_channel(rdev,
1916 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1917 info);
1918 if (result)
1919 goto bad_res;
1920 }
1921
1922 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1923 struct wireless_dev *txp_wdev = wdev;
1924 enum nl80211_tx_power_setting type;
1925 int idx, mbm = 0;
1926
1927 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1928 txp_wdev = NULL;
1929
1930 if (!rdev->ops->set_tx_power) {
1931 result = -EOPNOTSUPP;
1932 goto bad_res;
1933 }
1934
1935 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1936 type = nla_get_u32(info->attrs[idx]);
1937
1938 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1939 (type != NL80211_TX_POWER_AUTOMATIC)) {
1940 result = -EINVAL;
1941 goto bad_res;
1942 }
1943
1944 if (type != NL80211_TX_POWER_AUTOMATIC) {
1945 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1946 mbm = nla_get_u32(info->attrs[idx]);
1947 }
1948
1949 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1950 if (result)
1951 goto bad_res;
1952 }
1953
1954 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1955 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1956 u32 tx_ant, rx_ant;
1957 if ((!rdev->wiphy.available_antennas_tx &&
1958 !rdev->wiphy.available_antennas_rx) ||
1959 !rdev->ops->set_antenna) {
1960 result = -EOPNOTSUPP;
1961 goto bad_res;
1962 }
1963
1964 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1965 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1966
1967 /* reject antenna configurations which don't match the
1968 * available antenna masks, except for the "all" mask */
1969 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1970 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1971 result = -EINVAL;
1972 goto bad_res;
1973 }
1974
1975 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1976 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1977
1978 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
1979 if (result)
1980 goto bad_res;
1981 }
1982
1983 changed = 0;
1984
1985 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1986 retry_short = nla_get_u8(
1987 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1988 if (retry_short == 0) {
1989 result = -EINVAL;
1990 goto bad_res;
1991 }
1992 changed |= WIPHY_PARAM_RETRY_SHORT;
1993 }
1994
1995 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1996 retry_long = nla_get_u8(
1997 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1998 if (retry_long == 0) {
1999 result = -EINVAL;
2000 goto bad_res;
2001 }
2002 changed |= WIPHY_PARAM_RETRY_LONG;
2003 }
2004
2005 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2006 frag_threshold = nla_get_u32(
2007 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2008 if (frag_threshold < 256) {
2009 result = -EINVAL;
2010 goto bad_res;
2011 }
2012 if (frag_threshold != (u32) -1) {
2013 /*
2014 * Fragments (apart from the last one) are required to
2015 * have even length. Make the fragmentation code
2016 * simpler by stripping LSB should someone try to use
2017 * odd threshold value.
2018 */
2019 frag_threshold &= ~0x1;
2020 }
2021 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2022 }
2023
2024 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2025 rts_threshold = nla_get_u32(
2026 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2027 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2028 }
2029
2030 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2031 coverage_class = nla_get_u8(
2032 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2033 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2034 }
2035
2036 if (changed) {
2037 u8 old_retry_short, old_retry_long;
2038 u32 old_frag_threshold, old_rts_threshold;
2039 u8 old_coverage_class;
2040
2041 if (!rdev->ops->set_wiphy_params) {
2042 result = -EOPNOTSUPP;
2043 goto bad_res;
2044 }
2045
2046 old_retry_short = rdev->wiphy.retry_short;
2047 old_retry_long = rdev->wiphy.retry_long;
2048 old_frag_threshold = rdev->wiphy.frag_threshold;
2049 old_rts_threshold = rdev->wiphy.rts_threshold;
2050 old_coverage_class = rdev->wiphy.coverage_class;
2051
2052 if (changed & WIPHY_PARAM_RETRY_SHORT)
2053 rdev->wiphy.retry_short = retry_short;
2054 if (changed & WIPHY_PARAM_RETRY_LONG)
2055 rdev->wiphy.retry_long = retry_long;
2056 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2057 rdev->wiphy.frag_threshold = frag_threshold;
2058 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2059 rdev->wiphy.rts_threshold = rts_threshold;
2060 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2061 rdev->wiphy.coverage_class = coverage_class;
2062
2063 result = rdev_set_wiphy_params(rdev, changed);
2064 if (result) {
2065 rdev->wiphy.retry_short = old_retry_short;
2066 rdev->wiphy.retry_long = old_retry_long;
2067 rdev->wiphy.frag_threshold = old_frag_threshold;
2068 rdev->wiphy.rts_threshold = old_rts_threshold;
2069 rdev->wiphy.coverage_class = old_coverage_class;
2070 }
2071 }
2072
2073 bad_res:
2074 if (netdev)
2075 dev_put(netdev);
2076 return result;
2077 }
2078
2079 static inline u64 wdev_id(struct wireless_dev *wdev)
2080 {
2081 return (u64)wdev->identifier |
2082 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2083 }
2084
2085 static int nl80211_send_chandef(struct sk_buff *msg,
2086 struct cfg80211_chan_def *chandef)
2087 {
2088 WARN_ON(!cfg80211_chandef_valid(chandef));
2089
2090 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2091 chandef->chan->center_freq))
2092 return -ENOBUFS;
2093 switch (chandef->width) {
2094 case NL80211_CHAN_WIDTH_20_NOHT:
2095 case NL80211_CHAN_WIDTH_20:
2096 case NL80211_CHAN_WIDTH_40:
2097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2098 cfg80211_get_chandef_type(chandef)))
2099 return -ENOBUFS;
2100 break;
2101 default:
2102 break;
2103 }
2104 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2105 return -ENOBUFS;
2106 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2107 return -ENOBUFS;
2108 if (chandef->center_freq2 &&
2109 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2110 return -ENOBUFS;
2111 return 0;
2112 }
2113
2114 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2115 struct cfg80211_registered_device *rdev,
2116 struct wireless_dev *wdev)
2117 {
2118 struct net_device *dev = wdev->netdev;
2119 void *hdr;
2120
2121 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2122 if (!hdr)
2123 return -1;
2124
2125 if (dev &&
2126 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2127 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2128 goto nla_put_failure;
2129
2130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2131 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2132 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2133 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2134 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2135 rdev->devlist_generation ^
2136 (cfg80211_rdev_list_generation << 2)))
2137 goto nla_put_failure;
2138
2139 if (rdev->ops->get_channel) {
2140 int ret;
2141 struct cfg80211_chan_def chandef;
2142
2143 ret = rdev_get_channel(rdev, wdev, &chandef);
2144 if (ret == 0) {
2145 if (nl80211_send_chandef(msg, &chandef))
2146 goto nla_put_failure;
2147 }
2148 }
2149
2150 if (wdev->ssid_len) {
2151 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2152 goto nla_put_failure;
2153 }
2154
2155 return genlmsg_end(msg, hdr);
2156
2157 nla_put_failure:
2158 genlmsg_cancel(msg, hdr);
2159 return -EMSGSIZE;
2160 }
2161
2162 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2163 {
2164 int wp_idx = 0;
2165 int if_idx = 0;
2166 int wp_start = cb->args[0];
2167 int if_start = cb->args[1];
2168 struct cfg80211_registered_device *rdev;
2169 struct wireless_dev *wdev;
2170
2171 rtnl_lock();
2172 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2173 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2174 continue;
2175 if (wp_idx < wp_start) {
2176 wp_idx++;
2177 continue;
2178 }
2179 if_idx = 0;
2180
2181 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2182 if (if_idx < if_start) {
2183 if_idx++;
2184 continue;
2185 }
2186 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2187 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2188 rdev, wdev) < 0) {
2189 goto out;
2190 }
2191 if_idx++;
2192 }
2193
2194 wp_idx++;
2195 }
2196 out:
2197 rtnl_unlock();
2198
2199 cb->args[0] = wp_idx;
2200 cb->args[1] = if_idx;
2201
2202 return skb->len;
2203 }
2204
2205 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2206 {
2207 struct sk_buff *msg;
2208 struct cfg80211_registered_device *dev = info->user_ptr[0];
2209 struct wireless_dev *wdev = info->user_ptr[1];
2210
2211 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2212 if (!msg)
2213 return -ENOMEM;
2214
2215 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2216 dev, wdev) < 0) {
2217 nlmsg_free(msg);
2218 return -ENOBUFS;
2219 }
2220
2221 return genlmsg_reply(msg, info);
2222 }
2223
2224 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2225 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2226 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2227 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2228 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2229 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2230 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2231 };
2232
2233 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2234 {
2235 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2236 int flag;
2237
2238 *mntrflags = 0;
2239
2240 if (!nla)
2241 return -EINVAL;
2242
2243 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2244 nla, mntr_flags_policy))
2245 return -EINVAL;
2246
2247 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2248 if (flags[flag])
2249 *mntrflags |= (1<<flag);
2250
2251 return 0;
2252 }
2253
2254 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2255 struct net_device *netdev, u8 use_4addr,
2256 enum nl80211_iftype iftype)
2257 {
2258 if (!use_4addr) {
2259 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2260 return -EBUSY;
2261 return 0;
2262 }
2263
2264 switch (iftype) {
2265 case NL80211_IFTYPE_AP_VLAN:
2266 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2267 return 0;
2268 break;
2269 case NL80211_IFTYPE_STATION:
2270 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2271 return 0;
2272 break;
2273 default:
2274 break;
2275 }
2276
2277 return -EOPNOTSUPP;
2278 }
2279
2280 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2281 {
2282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2283 struct vif_params params;
2284 int err;
2285 enum nl80211_iftype otype, ntype;
2286 struct net_device *dev = info->user_ptr[1];
2287 u32 _flags, *flags = NULL;
2288 bool change = false;
2289
2290 memset(&params, 0, sizeof(params));
2291
2292 otype = ntype = dev->ieee80211_ptr->iftype;
2293
2294 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2295 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2296 if (otype != ntype)
2297 change = true;
2298 if (ntype > NL80211_IFTYPE_MAX)
2299 return -EINVAL;
2300 }
2301
2302 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2303 struct wireless_dev *wdev = dev->ieee80211_ptr;
2304
2305 if (ntype != NL80211_IFTYPE_MESH_POINT)
2306 return -EINVAL;
2307 if (netif_running(dev))
2308 return -EBUSY;
2309
2310 wdev_lock(wdev);
2311 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2312 IEEE80211_MAX_MESH_ID_LEN);
2313 wdev->mesh_id_up_len =
2314 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2315 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2316 wdev->mesh_id_up_len);
2317 wdev_unlock(wdev);
2318 }
2319
2320 if (info->attrs[NL80211_ATTR_4ADDR]) {
2321 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2322 change = true;
2323 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2324 if (err)
2325 return err;
2326 } else {
2327 params.use_4addr = -1;
2328 }
2329
2330 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2331 if (ntype != NL80211_IFTYPE_MONITOR)
2332 return -EINVAL;
2333 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2334 &_flags);
2335 if (err)
2336 return err;
2337
2338 flags = &_flags;
2339 change = true;
2340 }
2341
2342 if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2343 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2344 return -EOPNOTSUPP;
2345
2346 if (change)
2347 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2348 else
2349 err = 0;
2350
2351 if (!err && params.use_4addr != -1)
2352 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2353
2354 return err;
2355 }
2356
2357 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2358 {
2359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2360 struct vif_params params;
2361 struct wireless_dev *wdev;
2362 struct sk_buff *msg;
2363 int err;
2364 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2365 u32 flags;
2366
2367 memset(&params, 0, sizeof(params));
2368
2369 if (!info->attrs[NL80211_ATTR_IFNAME])
2370 return -EINVAL;
2371
2372 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2373 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2374 if (type > NL80211_IFTYPE_MAX)
2375 return -EINVAL;
2376 }
2377
2378 if (!rdev->ops->add_virtual_intf ||
2379 !(rdev->wiphy.interface_modes & (1 << type)))
2380 return -EOPNOTSUPP;
2381
2382 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2383 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2384 ETH_ALEN);
2385 if (!is_valid_ether_addr(params.macaddr))
2386 return -EADDRNOTAVAIL;
2387 }
2388
2389 if (info->attrs[NL80211_ATTR_4ADDR]) {
2390 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2391 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2392 if (err)
2393 return err;
2394 }
2395
2396 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2397 if (!msg)
2398 return -ENOMEM;
2399
2400 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2401 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2402 &flags);
2403
2404 if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2405 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2406 return -EOPNOTSUPP;
2407
2408 wdev = rdev_add_virtual_intf(rdev,
2409 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2410 type, err ? NULL : &flags, &params);
2411 if (IS_ERR(wdev)) {
2412 nlmsg_free(msg);
2413 return PTR_ERR(wdev);
2414 }
2415
2416 switch (type) {
2417 case NL80211_IFTYPE_MESH_POINT:
2418 if (!info->attrs[NL80211_ATTR_MESH_ID])
2419 break;
2420 wdev_lock(wdev);
2421 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2422 IEEE80211_MAX_MESH_ID_LEN);
2423 wdev->mesh_id_up_len =
2424 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2425 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2426 wdev->mesh_id_up_len);
2427 wdev_unlock(wdev);
2428 break;
2429 case NL80211_IFTYPE_P2P_DEVICE:
2430 /*
2431 * P2P Device doesn't have a netdev, so doesn't go
2432 * through the netdev notifier and must be added here
2433 */
2434 mutex_init(&wdev->mtx);
2435 INIT_LIST_HEAD(&wdev->event_list);
2436 spin_lock_init(&wdev->event_lock);
2437 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2438 spin_lock_init(&wdev->mgmt_registrations_lock);
2439
2440 wdev->identifier = ++rdev->wdev_id;
2441 list_add_rcu(&wdev->list, &rdev->wdev_list);
2442 rdev->devlist_generation++;
2443 break;
2444 default:
2445 break;
2446 }
2447
2448 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2449 rdev, wdev) < 0) {
2450 nlmsg_free(msg);
2451 return -ENOBUFS;
2452 }
2453
2454 return genlmsg_reply(msg, info);
2455 }
2456
2457 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2458 {
2459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2460 struct wireless_dev *wdev = info->user_ptr[1];
2461
2462 if (!rdev->ops->del_virtual_intf)
2463 return -EOPNOTSUPP;
2464
2465 /*
2466 * If we remove a wireless device without a netdev then clear
2467 * user_ptr[1] so that nl80211_post_doit won't dereference it
2468 * to check if it needs to do dev_put(). Otherwise it crashes
2469 * since the wdev has been freed, unlike with a netdev where
2470 * we need the dev_put() for the netdev to really be freed.
2471 */
2472 if (!wdev->netdev)
2473 info->user_ptr[1] = NULL;
2474
2475 return rdev_del_virtual_intf(rdev, wdev);
2476 }
2477
2478 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2479 {
2480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2481 struct net_device *dev = info->user_ptr[1];
2482 u16 noack_map;
2483
2484 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2485 return -EINVAL;
2486
2487 if (!rdev->ops->set_noack_map)
2488 return -EOPNOTSUPP;
2489
2490 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2491
2492 return rdev_set_noack_map(rdev, dev, noack_map);
2493 }
2494
2495 struct get_key_cookie {
2496 struct sk_buff *msg;
2497 int error;
2498 int idx;
2499 };
2500
2501 static void get_key_callback(void *c, struct key_params *params)
2502 {
2503 struct nlattr *key;
2504 struct get_key_cookie *cookie = c;
2505
2506 if ((params->key &&
2507 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2508 params->key_len, params->key)) ||
2509 (params->seq &&
2510 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2511 params->seq_len, params->seq)) ||
2512 (params->cipher &&
2513 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2514 params->cipher)))
2515 goto nla_put_failure;
2516
2517 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2518 if (!key)
2519 goto nla_put_failure;
2520
2521 if ((params->key &&
2522 nla_put(cookie->msg, NL80211_KEY_DATA,
2523 params->key_len, params->key)) ||
2524 (params->seq &&
2525 nla_put(cookie->msg, NL80211_KEY_SEQ,
2526 params->seq_len, params->seq)) ||
2527 (params->cipher &&
2528 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2529 params->cipher)))
2530 goto nla_put_failure;
2531
2532 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2533 goto nla_put_failure;
2534
2535 nla_nest_end(cookie->msg, key);
2536
2537 return;
2538 nla_put_failure:
2539 cookie->error = 1;
2540 }
2541
2542 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2543 {
2544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2545 int err;
2546 struct net_device *dev = info->user_ptr[1];
2547 u8 key_idx = 0;
2548 const u8 *mac_addr = NULL;
2549 bool pairwise;
2550 struct get_key_cookie cookie = {
2551 .error = 0,
2552 };
2553 void *hdr;
2554 struct sk_buff *msg;
2555
2556 if (info->attrs[NL80211_ATTR_KEY_IDX])
2557 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2558
2559 if (key_idx > 5)
2560 return -EINVAL;
2561
2562 if (info->attrs[NL80211_ATTR_MAC])
2563 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2564
2565 pairwise = !!mac_addr;
2566 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2567 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2568 if (kt >= NUM_NL80211_KEYTYPES)
2569 return -EINVAL;
2570 if (kt != NL80211_KEYTYPE_GROUP &&
2571 kt != NL80211_KEYTYPE_PAIRWISE)
2572 return -EINVAL;
2573 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2574 }
2575
2576 if (!rdev->ops->get_key)
2577 return -EOPNOTSUPP;
2578
2579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2580 if (!msg)
2581 return -ENOMEM;
2582
2583 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2584 NL80211_CMD_NEW_KEY);
2585 if (IS_ERR(hdr))
2586 return PTR_ERR(hdr);
2587
2588 cookie.msg = msg;
2589 cookie.idx = key_idx;
2590
2591 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2592 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2593 goto nla_put_failure;
2594 if (mac_addr &&
2595 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2596 goto nla_put_failure;
2597
2598 if (pairwise && mac_addr &&
2599 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2600 return -ENOENT;
2601
2602 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2603 get_key_callback);
2604
2605 if (err)
2606 goto free_msg;
2607
2608 if (cookie.error)
2609 goto nla_put_failure;
2610
2611 genlmsg_end(msg, hdr);
2612 return genlmsg_reply(msg, info);
2613
2614 nla_put_failure:
2615 err = -ENOBUFS;
2616 free_msg:
2617 nlmsg_free(msg);
2618 return err;
2619 }
2620
2621 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2622 {
2623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2624 struct key_parse key;
2625 int err;
2626 struct net_device *dev = info->user_ptr[1];
2627
2628 err = nl80211_parse_key(info, &key);
2629 if (err)
2630 return err;
2631
2632 if (key.idx < 0)
2633 return -EINVAL;
2634
2635 /* only support setting default key */
2636 if (!key.def && !key.defmgmt)
2637 return -EINVAL;
2638
2639 wdev_lock(dev->ieee80211_ptr);
2640
2641 if (key.def) {
2642 if (!rdev->ops->set_default_key) {
2643 err = -EOPNOTSUPP;
2644 goto out;
2645 }
2646
2647 err = nl80211_key_allowed(dev->ieee80211_ptr);
2648 if (err)
2649 goto out;
2650
2651 err = rdev_set_default_key(rdev, dev, key.idx,
2652 key.def_uni, key.def_multi);
2653
2654 if (err)
2655 goto out;
2656
2657 #ifdef CONFIG_CFG80211_WEXT
2658 dev->ieee80211_ptr->wext.default_key = key.idx;
2659 #endif
2660 } else {
2661 if (key.def_uni || !key.def_multi) {
2662 err = -EINVAL;
2663 goto out;
2664 }
2665
2666 if (!rdev->ops->set_default_mgmt_key) {
2667 err = -EOPNOTSUPP;
2668 goto out;
2669 }
2670
2671 err = nl80211_key_allowed(dev->ieee80211_ptr);
2672 if (err)
2673 goto out;
2674
2675 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2676 if (err)
2677 goto out;
2678
2679 #ifdef CONFIG_CFG80211_WEXT
2680 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2681 #endif
2682 }
2683
2684 out:
2685 wdev_unlock(dev->ieee80211_ptr);
2686
2687 return err;
2688 }
2689
2690 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2691 {
2692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2693 int err;
2694 struct net_device *dev = info->user_ptr[1];
2695 struct key_parse key;
2696 const u8 *mac_addr = NULL;
2697
2698 err = nl80211_parse_key(info, &key);
2699 if (err)
2700 return err;
2701
2702 if (!key.p.key)
2703 return -EINVAL;
2704
2705 if (info->attrs[NL80211_ATTR_MAC])
2706 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2707
2708 if (key.type == -1) {
2709 if (mac_addr)
2710 key.type = NL80211_KEYTYPE_PAIRWISE;
2711 else
2712 key.type = NL80211_KEYTYPE_GROUP;
2713 }
2714
2715 /* for now */
2716 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2717 key.type != NL80211_KEYTYPE_GROUP)
2718 return -EINVAL;
2719
2720 if (!rdev->ops->add_key)
2721 return -EOPNOTSUPP;
2722
2723 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2724 key.type == NL80211_KEYTYPE_PAIRWISE,
2725 mac_addr))
2726 return -EINVAL;
2727
2728 wdev_lock(dev->ieee80211_ptr);
2729 err = nl80211_key_allowed(dev->ieee80211_ptr);
2730 if (!err)
2731 err = rdev_add_key(rdev, dev, key.idx,
2732 key.type == NL80211_KEYTYPE_PAIRWISE,
2733 mac_addr, &key.p);
2734 wdev_unlock(dev->ieee80211_ptr);
2735
2736 return err;
2737 }
2738
2739 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2740 {
2741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2742 int err;
2743 struct net_device *dev = info->user_ptr[1];
2744 u8 *mac_addr = NULL;
2745 struct key_parse key;
2746
2747 err = nl80211_parse_key(info, &key);
2748 if (err)
2749 return err;
2750
2751 if (info->attrs[NL80211_ATTR_MAC])
2752 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2753
2754 if (key.type == -1) {
2755 if (mac_addr)
2756 key.type = NL80211_KEYTYPE_PAIRWISE;
2757 else
2758 key.type = NL80211_KEYTYPE_GROUP;
2759 }
2760
2761 /* for now */
2762 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2763 key.type != NL80211_KEYTYPE_GROUP)
2764 return -EINVAL;
2765
2766 if (!rdev->ops->del_key)
2767 return -EOPNOTSUPP;
2768
2769 wdev_lock(dev->ieee80211_ptr);
2770 err = nl80211_key_allowed(dev->ieee80211_ptr);
2771
2772 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2773 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2774 err = -ENOENT;
2775
2776 if (!err)
2777 err = rdev_del_key(rdev, dev, key.idx,
2778 key.type == NL80211_KEYTYPE_PAIRWISE,
2779 mac_addr);
2780
2781 #ifdef CONFIG_CFG80211_WEXT
2782 if (!err) {
2783 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2784 dev->ieee80211_ptr->wext.default_key = -1;
2785 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2786 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2787 }
2788 #endif
2789 wdev_unlock(dev->ieee80211_ptr);
2790
2791 return err;
2792 }
2793
2794 /* This function returns an error or the number of nested attributes */
2795 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2796 {
2797 struct nlattr *attr;
2798 int n_entries = 0, tmp;
2799
2800 nla_for_each_nested(attr, nl_attr, tmp) {
2801 if (nla_len(attr) != ETH_ALEN)
2802 return -EINVAL;
2803
2804 n_entries++;
2805 }
2806
2807 return n_entries;
2808 }
2809
2810 /*
2811 * This function parses ACL information and allocates memory for ACL data.
2812 * On successful return, the calling function is responsible to free the
2813 * ACL buffer returned by this function.
2814 */
2815 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2816 struct genl_info *info)
2817 {
2818 enum nl80211_acl_policy acl_policy;
2819 struct nlattr *attr;
2820 struct cfg80211_acl_data *acl;
2821 int i = 0, n_entries, tmp;
2822
2823 if (!wiphy->max_acl_mac_addrs)
2824 return ERR_PTR(-EOPNOTSUPP);
2825
2826 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2827 return ERR_PTR(-EINVAL);
2828
2829 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2830 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2831 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2832 return ERR_PTR(-EINVAL);
2833
2834 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2835 return ERR_PTR(-EINVAL);
2836
2837 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2838 if (n_entries < 0)
2839 return ERR_PTR(n_entries);
2840
2841 if (n_entries > wiphy->max_acl_mac_addrs)
2842 return ERR_PTR(-ENOTSUPP);
2843
2844 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2845 GFP_KERNEL);
2846 if (!acl)
2847 return ERR_PTR(-ENOMEM);
2848
2849 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2850 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2851 i++;
2852 }
2853
2854 acl->n_acl_entries = n_entries;
2855 acl->acl_policy = acl_policy;
2856
2857 return acl;
2858 }
2859
2860 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2861 {
2862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2863 struct net_device *dev = info->user_ptr[1];
2864 struct cfg80211_acl_data *acl;
2865 int err;
2866
2867 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2868 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2869 return -EOPNOTSUPP;
2870
2871 if (!dev->ieee80211_ptr->beacon_interval)
2872 return -EINVAL;
2873
2874 acl = parse_acl_data(&rdev->wiphy, info);
2875 if (IS_ERR(acl))
2876 return PTR_ERR(acl);
2877
2878 err = rdev_set_mac_acl(rdev, dev, acl);
2879
2880 kfree(acl);
2881
2882 return err;
2883 }
2884
2885 static int nl80211_parse_beacon(struct genl_info *info,
2886 struct cfg80211_beacon_data *bcn)
2887 {
2888 bool haveinfo = false;
2889
2890 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2891 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2892 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2893 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2894 return -EINVAL;
2895
2896 memset(bcn, 0, sizeof(*bcn));
2897
2898 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2899 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2900 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2901 if (!bcn->head_len)
2902 return -EINVAL;
2903 haveinfo = true;
2904 }
2905
2906 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2907 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2908 bcn->tail_len =
2909 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2910 haveinfo = true;
2911 }
2912
2913 if (!haveinfo)
2914 return -EINVAL;
2915
2916 if (info->attrs[NL80211_ATTR_IE]) {
2917 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2918 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2919 }
2920
2921 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2922 bcn->proberesp_ies =
2923 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2924 bcn->proberesp_ies_len =
2925 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2926 }
2927
2928 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2929 bcn->assocresp_ies =
2930 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2931 bcn->assocresp_ies_len =
2932 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2933 }
2934
2935 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2936 bcn->probe_resp =
2937 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2938 bcn->probe_resp_len =
2939 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2940 }
2941
2942 return 0;
2943 }
2944
2945 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2946 struct cfg80211_ap_settings *params)
2947 {
2948 struct wireless_dev *wdev;
2949 bool ret = false;
2950
2951 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2952 if (wdev->iftype != NL80211_IFTYPE_AP &&
2953 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2954 continue;
2955
2956 if (!wdev->preset_chandef.chan)
2957 continue;
2958
2959 params->chandef = wdev->preset_chandef;
2960 ret = true;
2961 break;
2962 }
2963
2964 return ret;
2965 }
2966
2967 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2968 enum nl80211_auth_type auth_type,
2969 enum nl80211_commands cmd)
2970 {
2971 if (auth_type > NL80211_AUTHTYPE_MAX)
2972 return false;
2973
2974 switch (cmd) {
2975 case NL80211_CMD_AUTHENTICATE:
2976 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2977 auth_type == NL80211_AUTHTYPE_SAE)
2978 return false;
2979 return true;
2980 case NL80211_CMD_CONNECT:
2981 case NL80211_CMD_START_AP:
2982 /* SAE not supported yet */
2983 if (auth_type == NL80211_AUTHTYPE_SAE)
2984 return false;
2985 return true;
2986 default:
2987 return false;
2988 }
2989 }
2990
2991 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2992 {
2993 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2994 struct net_device *dev = info->user_ptr[1];
2995 struct wireless_dev *wdev = dev->ieee80211_ptr;
2996 struct cfg80211_ap_settings params;
2997 int err;
2998 u8 radar_detect_width = 0;
2999
3000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3001 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3002 return -EOPNOTSUPP;
3003
3004 if (!rdev->ops->start_ap)
3005 return -EOPNOTSUPP;
3006
3007 if (wdev->beacon_interval)
3008 return -EALREADY;
3009
3010 memset(&params, 0, sizeof(params));
3011
3012 /* these are required for START_AP */
3013 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3014 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3015 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3016 return -EINVAL;
3017
3018 err = nl80211_parse_beacon(info, &params.beacon);
3019 if (err)
3020 return err;
3021
3022 params.beacon_interval =
3023 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3024 params.dtim_period =
3025 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3026
3027 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3028 if (err)
3029 return err;
3030
3031 /*
3032 * In theory, some of these attributes should be required here
3033 * but since they were not used when the command was originally
3034 * added, keep them optional for old user space programs to let
3035 * them continue to work with drivers that do not need the
3036 * additional information -- drivers must check!
3037 */
3038 if (info->attrs[NL80211_ATTR_SSID]) {
3039 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3040 params.ssid_len =
3041 nla_len(info->attrs[NL80211_ATTR_SSID]);
3042 if (params.ssid_len == 0 ||
3043 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3044 return -EINVAL;
3045 }
3046
3047 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3048 params.hidden_ssid = nla_get_u32(
3049 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3050 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3051 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3052 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3053 return -EINVAL;
3054 }
3055
3056 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3057
3058 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3059 params.auth_type = nla_get_u32(
3060 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3061 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3062 NL80211_CMD_START_AP))
3063 return -EINVAL;
3064 } else
3065 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3066
3067 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3068 NL80211_MAX_NR_CIPHER_SUITES);
3069 if (err)
3070 return err;
3071
3072 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3073 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3074 return -EOPNOTSUPP;
3075 params.inactivity_timeout = nla_get_u16(
3076 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3077 }
3078
3079 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3080 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3081 return -EINVAL;
3082 params.p2p_ctwindow =
3083 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3084 if (params.p2p_ctwindow > 127)
3085 return -EINVAL;
3086 if (params.p2p_ctwindow != 0 &&
3087 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3088 return -EINVAL;
3089 }
3090
3091 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3092 u8 tmp;
3093
3094 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3095 return -EINVAL;
3096 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3097 if (tmp > 1)
3098 return -EINVAL;
3099 params.p2p_opp_ps = tmp;
3100 if (params.p2p_opp_ps != 0 &&
3101 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3102 return -EINVAL;
3103 }
3104
3105 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3106 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3107 if (err)
3108 return err;
3109 } else if (wdev->preset_chandef.chan) {
3110 params.chandef = wdev->preset_chandef;
3111 } else if (!nl80211_get_ap_channel(rdev, &params))
3112 return -EINVAL;
3113
3114 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3115 return -EINVAL;
3116
3117 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3118 if (err < 0)
3119 return err;
3120 if (err) {
3121 radar_detect_width = BIT(params.chandef.width);
3122 params.radar_required = true;
3123 }
3124
3125 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3126 params.chandef.chan,
3127 CHAN_MODE_SHARED,
3128 radar_detect_width);
3129 if (err)
3130 return err;
3131
3132 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3133 params.acl = parse_acl_data(&rdev->wiphy, info);
3134 if (IS_ERR(params.acl))
3135 return PTR_ERR(params.acl);
3136 }
3137
3138 err = rdev_start_ap(rdev, dev, &params);
3139 if (!err) {
3140 wdev->preset_chandef = params.chandef;
3141 wdev->beacon_interval = params.beacon_interval;
3142 wdev->channel = params.chandef.chan;
3143 wdev->ssid_len = params.ssid_len;
3144 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3145 }
3146
3147 kfree(params.acl);
3148
3149 return err;
3150 }
3151
3152 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3153 {
3154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3155 struct net_device *dev = info->user_ptr[1];
3156 struct wireless_dev *wdev = dev->ieee80211_ptr;
3157 struct cfg80211_beacon_data params;
3158 int err;
3159
3160 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3162 return -EOPNOTSUPP;
3163
3164 if (!rdev->ops->change_beacon)
3165 return -EOPNOTSUPP;
3166
3167 if (!wdev->beacon_interval)
3168 return -EINVAL;
3169
3170 err = nl80211_parse_beacon(info, &params);
3171 if (err)
3172 return err;
3173
3174 return rdev_change_beacon(rdev, dev, &params);
3175 }
3176
3177 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3178 {
3179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3180 struct net_device *dev = info->user_ptr[1];
3181
3182 return cfg80211_stop_ap(rdev, dev);
3183 }
3184
3185 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3186 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3187 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3188 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3189 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3190 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3191 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3192 };
3193
3194 static int parse_station_flags(struct genl_info *info,
3195 enum nl80211_iftype iftype,
3196 struct station_parameters *params)
3197 {
3198 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3199 struct nlattr *nla;
3200 int flag;
3201
3202 /*
3203 * Try parsing the new attribute first so userspace
3204 * can specify both for older kernels.
3205 */
3206 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3207 if (nla) {
3208 struct nl80211_sta_flag_update *sta_flags;
3209
3210 sta_flags = nla_data(nla);
3211 params->sta_flags_mask = sta_flags->mask;
3212 params->sta_flags_set = sta_flags->set;
3213 params->sta_flags_set &= params->sta_flags_mask;
3214 if ((params->sta_flags_mask |
3215 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3216 return -EINVAL;
3217 return 0;
3218 }
3219
3220 /* if present, parse the old attribute */
3221
3222 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3223 if (!nla)
3224 return 0;
3225
3226 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3227 nla, sta_flags_policy))
3228 return -EINVAL;
3229
3230 /*
3231 * Only allow certain flags for interface types so that
3232 * other attributes are silently ignored. Remember that
3233 * this is backward compatibility code with old userspace
3234 * and shouldn't be hit in other cases anyway.
3235 */
3236 switch (iftype) {
3237 case NL80211_IFTYPE_AP:
3238 case NL80211_IFTYPE_AP_VLAN:
3239 case NL80211_IFTYPE_P2P_GO:
3240 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3241 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3242 BIT(NL80211_STA_FLAG_WME) |
3243 BIT(NL80211_STA_FLAG_MFP);
3244 break;
3245 case NL80211_IFTYPE_P2P_CLIENT:
3246 case NL80211_IFTYPE_STATION:
3247 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3248 BIT(NL80211_STA_FLAG_TDLS_PEER);
3249 break;
3250 case NL80211_IFTYPE_MESH_POINT:
3251 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3252 BIT(NL80211_STA_FLAG_MFP) |
3253 BIT(NL80211_STA_FLAG_AUTHORIZED);
3254 default:
3255 return -EINVAL;
3256 }
3257
3258 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3259 if (flags[flag]) {
3260 params->sta_flags_set |= (1<<flag);
3261
3262 /* no longer support new API additions in old API */
3263 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3264 return -EINVAL;
3265 }
3266 }
3267
3268 return 0;
3269 }
3270
3271 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3272 int attr)
3273 {
3274 struct nlattr *rate;
3275 u32 bitrate;
3276 u16 bitrate_compat;
3277
3278 rate = nla_nest_start(msg, attr);
3279 if (!rate)
3280 return false;
3281
3282 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3283 bitrate = cfg80211_calculate_bitrate(info);
3284 /* report 16-bit bitrate only if we can */
3285 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3286 if (bitrate > 0 &&
3287 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3288 return false;
3289 if (bitrate_compat > 0 &&
3290 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3291 return false;
3292
3293 if (info->flags & RATE_INFO_FLAGS_MCS) {
3294 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3295 return false;
3296 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3297 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3298 return false;
3299 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3300 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3301 return false;
3302 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3303 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3304 return false;
3305 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3306 return false;
3307 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3308 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3309 return false;
3310 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3311 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3312 return false;
3313 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3314 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3315 return false;
3316 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3317 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3318 return false;
3319 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3320 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3321 return false;
3322 }
3323
3324 nla_nest_end(msg, rate);
3325 return true;
3326 }
3327
3328 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3329 int id)
3330 {
3331 void *attr;
3332 int i = 0;
3333
3334 if (!mask)
3335 return true;
3336
3337 attr = nla_nest_start(msg, id);
3338 if (!attr)
3339 return false;
3340
3341 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3342 if (!(mask & BIT(i)))
3343 continue;
3344
3345 if (nla_put_u8(msg, i, signal[i]))
3346 return false;
3347 }
3348
3349 nla_nest_end(msg, attr);
3350
3351 return true;
3352 }
3353
3354 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3355 int flags,
3356 struct cfg80211_registered_device *rdev,
3357 struct net_device *dev,
3358 const u8 *mac_addr, struct station_info *sinfo)
3359 {
3360 void *hdr;
3361 struct nlattr *sinfoattr, *bss_param;
3362
3363 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3364 if (!hdr)
3365 return -1;
3366
3367 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3368 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3369 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3370 goto nla_put_failure;
3371
3372 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3373 if (!sinfoattr)
3374 goto nla_put_failure;
3375 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3376 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3377 sinfo->connected_time))
3378 goto nla_put_failure;
3379 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3380 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3381 sinfo->inactive_time))
3382 goto nla_put_failure;
3383 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3384 STATION_INFO_RX_BYTES64)) &&
3385 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3386 (u32)sinfo->rx_bytes))
3387 goto nla_put_failure;
3388 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3389 STATION_INFO_TX_BYTES64)) &&
3390 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3391 (u32)sinfo->tx_bytes))
3392 goto nla_put_failure;
3393 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3394 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3395 sinfo->rx_bytes))
3396 goto nla_put_failure;
3397 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3398 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3399 sinfo->tx_bytes))
3400 goto nla_put_failure;
3401 if ((sinfo->filled & STATION_INFO_LLID) &&
3402 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3403 goto nla_put_failure;
3404 if ((sinfo->filled & STATION_INFO_PLID) &&
3405 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3406 goto nla_put_failure;
3407 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3408 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3409 sinfo->plink_state))
3410 goto nla_put_failure;
3411 switch (rdev->wiphy.signal_type) {
3412 case CFG80211_SIGNAL_TYPE_MBM:
3413 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3414 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3415 sinfo->signal))
3416 goto nla_put_failure;
3417 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3418 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3419 sinfo->signal_avg))
3420 goto nla_put_failure;
3421 break;
3422 default:
3423 break;
3424 }
3425 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3426 if (!nl80211_put_signal(msg, sinfo->chains,
3427 sinfo->chain_signal,
3428 NL80211_STA_INFO_CHAIN_SIGNAL))
3429 goto nla_put_failure;
3430 }
3431 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3432 if (!nl80211_put_signal(msg, sinfo->chains,
3433 sinfo->chain_signal_avg,
3434 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3435 goto nla_put_failure;
3436 }
3437 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3438 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3439 NL80211_STA_INFO_TX_BITRATE))
3440 goto nla_put_failure;
3441 }
3442 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3443 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3444 NL80211_STA_INFO_RX_BITRATE))
3445 goto nla_put_failure;
3446 }
3447 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3448 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3449 sinfo->rx_packets))
3450 goto nla_put_failure;
3451 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3452 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3453 sinfo->tx_packets))
3454 goto nla_put_failure;
3455 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3456 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3457 sinfo->tx_retries))
3458 goto nla_put_failure;
3459 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3460 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3461 sinfo->tx_failed))
3462 goto nla_put_failure;
3463 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3464 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3465 sinfo->beacon_loss_count))
3466 goto nla_put_failure;
3467 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3468 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3469 sinfo->local_pm))
3470 goto nla_put_failure;
3471 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3472 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3473 sinfo->peer_pm))
3474 goto nla_put_failure;
3475 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3476 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3477 sinfo->nonpeer_pm))
3478 goto nla_put_failure;
3479 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3480 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3481 if (!bss_param)
3482 goto nla_put_failure;
3483
3484 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3485 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3486 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3487 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3488 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3489 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3490 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3491 sinfo->bss_param.dtim_period) ||
3492 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3493 sinfo->bss_param.beacon_interval))
3494 goto nla_put_failure;
3495
3496 nla_nest_end(msg, bss_param);
3497 }
3498 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3499 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3500 sizeof(struct nl80211_sta_flag_update),
3501 &sinfo->sta_flags))
3502 goto nla_put_failure;
3503 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3504 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3505 sinfo->t_offset))
3506 goto nla_put_failure;
3507 nla_nest_end(msg, sinfoattr);
3508
3509 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3510 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3511 sinfo->assoc_req_ies))
3512 goto nla_put_failure;
3513
3514 return genlmsg_end(msg, hdr);
3515
3516 nla_put_failure:
3517 genlmsg_cancel(msg, hdr);
3518 return -EMSGSIZE;
3519 }
3520
3521 static int nl80211_dump_station(struct sk_buff *skb,
3522 struct netlink_callback *cb)
3523 {
3524 struct station_info sinfo;
3525 struct cfg80211_registered_device *dev;
3526 struct wireless_dev *wdev;
3527 u8 mac_addr[ETH_ALEN];
3528 int sta_idx = cb->args[2];
3529 int err;
3530
3531 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3532 if (err)
3533 return err;
3534
3535 if (!wdev->netdev) {
3536 err = -EINVAL;
3537 goto out_err;
3538 }
3539
3540 if (!dev->ops->dump_station) {
3541 err = -EOPNOTSUPP;
3542 goto out_err;
3543 }
3544
3545 while (1) {
3546 memset(&sinfo, 0, sizeof(sinfo));
3547 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3548 mac_addr, &sinfo);
3549 if (err == -ENOENT)
3550 break;
3551 if (err)
3552 goto out_err;
3553
3554 if (nl80211_send_station(skb,
3555 NETLINK_CB(cb->skb).portid,
3556 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3557 dev, wdev->netdev, mac_addr,
3558 &sinfo) < 0)
3559 goto out;
3560
3561 sta_idx++;
3562 }
3563
3564
3565 out:
3566 cb->args[2] = sta_idx;
3567 err = skb->len;
3568 out_err:
3569 nl80211_finish_wdev_dump(dev);
3570
3571 return err;
3572 }
3573
3574 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3575 {
3576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3577 struct net_device *dev = info->user_ptr[1];
3578 struct station_info sinfo;
3579 struct sk_buff *msg;
3580 u8 *mac_addr = NULL;
3581 int err;
3582
3583 memset(&sinfo, 0, sizeof(sinfo));
3584
3585 if (!info->attrs[NL80211_ATTR_MAC])
3586 return -EINVAL;
3587
3588 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3589
3590 if (!rdev->ops->get_station)
3591 return -EOPNOTSUPP;
3592
3593 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3594 if (err)
3595 return err;
3596
3597 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3598 if (!msg)
3599 return -ENOMEM;
3600
3601 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3602 rdev, dev, mac_addr, &sinfo) < 0) {
3603 nlmsg_free(msg);
3604 return -ENOBUFS;
3605 }
3606
3607 return genlmsg_reply(msg, info);
3608 }
3609
3610 int cfg80211_check_station_change(struct wiphy *wiphy,
3611 struct station_parameters *params,
3612 enum cfg80211_station_type statype)
3613 {
3614 if (params->listen_interval != -1)
3615 return -EINVAL;
3616 if (params->aid)
3617 return -EINVAL;
3618
3619 /* When you run into this, adjust the code below for the new flag */
3620 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3621
3622 switch (statype) {
3623 case CFG80211_STA_MESH_PEER_KERNEL:
3624 case CFG80211_STA_MESH_PEER_USER:
3625 /*
3626 * No ignoring the TDLS flag here -- the userspace mesh
3627 * code doesn't have the bug of including TDLS in the
3628 * mask everywhere.
3629 */
3630 if (params->sta_flags_mask &
3631 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3632 BIT(NL80211_STA_FLAG_MFP) |
3633 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3634 return -EINVAL;
3635 break;
3636 case CFG80211_STA_TDLS_PEER_SETUP:
3637 case CFG80211_STA_TDLS_PEER_ACTIVE:
3638 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3639 return -EINVAL;
3640 /* ignore since it can't change */
3641 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3642 break;
3643 default:
3644 /* disallow mesh-specific things */
3645 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3646 return -EINVAL;
3647 if (params->local_pm)
3648 return -EINVAL;
3649 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3650 return -EINVAL;
3651 }
3652
3653 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3654 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3655 /* TDLS can't be set, ... */
3656 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3657 return -EINVAL;
3658 /*
3659 * ... but don't bother the driver with it. This works around
3660 * a hostapd/wpa_supplicant issue -- it always includes the
3661 * TLDS_PEER flag in the mask even for AP mode.
3662 */
3663 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3664 }
3665
3666 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3667 /* reject other things that can't change */
3668 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3669 return -EINVAL;
3670 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3671 return -EINVAL;
3672 if (params->supported_rates)
3673 return -EINVAL;
3674 if (params->ext_capab || params->ht_capa || params->vht_capa)
3675 return -EINVAL;
3676 }
3677
3678 if (statype != CFG80211_STA_AP_CLIENT) {
3679 if (params->vlan)
3680 return -EINVAL;
3681 }
3682
3683 switch (statype) {
3684 case CFG80211_STA_AP_MLME_CLIENT:
3685 /* Use this only for authorizing/unauthorizing a station */
3686 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3687 return -EOPNOTSUPP;
3688 break;
3689 case CFG80211_STA_AP_CLIENT:
3690 /* accept only the listed bits */
3691 if (params->sta_flags_mask &
3692 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3693 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3694 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3695 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3696 BIT(NL80211_STA_FLAG_WME) |
3697 BIT(NL80211_STA_FLAG_MFP)))
3698 return -EINVAL;
3699
3700 /* but authenticated/associated only if driver handles it */
3701 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3702 params->sta_flags_mask &
3703 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3704 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3705 return -EINVAL;
3706 break;
3707 case CFG80211_STA_IBSS:
3708 case CFG80211_STA_AP_STA:
3709 /* reject any changes other than AUTHORIZED */
3710 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3711 return -EINVAL;
3712 break;
3713 case CFG80211_STA_TDLS_PEER_SETUP:
3714 /* reject any changes other than AUTHORIZED or WME */
3715 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3716 BIT(NL80211_STA_FLAG_WME)))
3717 return -EINVAL;
3718 /* force (at least) rates when authorizing */
3719 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3720 !params->supported_rates)
3721 return -EINVAL;
3722 break;
3723 case CFG80211_STA_TDLS_PEER_ACTIVE:
3724 /* reject any changes */
3725 return -EINVAL;
3726 case CFG80211_STA_MESH_PEER_KERNEL:
3727 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3728 return -EINVAL;
3729 break;
3730 case CFG80211_STA_MESH_PEER_USER:
3731 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3732 return -EINVAL;
3733 break;
3734 }
3735
3736 return 0;
3737 }
3738 EXPORT_SYMBOL(cfg80211_check_station_change);
3739
3740 /*
3741 * Get vlan interface making sure it is running and on the right wiphy.
3742 */
3743 static struct net_device *get_vlan(struct genl_info *info,
3744 struct cfg80211_registered_device *rdev)
3745 {
3746 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3747 struct net_device *v;
3748 int ret;
3749
3750 if (!vlanattr)
3751 return NULL;
3752
3753 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3754 if (!v)
3755 return ERR_PTR(-ENODEV);
3756
3757 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3758 ret = -EINVAL;
3759 goto error;
3760 }
3761
3762 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3763 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3764 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3765 ret = -EINVAL;
3766 goto error;
3767 }
3768
3769 if (!netif_running(v)) {
3770 ret = -ENETDOWN;
3771 goto error;
3772 }
3773
3774 return v;
3775 error:
3776 dev_put(v);
3777 return ERR_PTR(ret);
3778 }
3779
3780 static struct nla_policy
3781 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3782 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3783 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3784 };
3785
3786 static int nl80211_parse_sta_wme(struct genl_info *info,
3787 struct station_parameters *params)
3788 {
3789 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3790 struct nlattr *nla;
3791 int err;
3792
3793 /* parse WME attributes if present */
3794 if (!info->attrs[NL80211_ATTR_STA_WME])
3795 return 0;
3796
3797 nla = info->attrs[NL80211_ATTR_STA_WME];
3798 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3799 nl80211_sta_wme_policy);
3800 if (err)
3801 return err;
3802
3803 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3804 params->uapsd_queues = nla_get_u8(
3805 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3806 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3807 return -EINVAL;
3808
3809 if (tb[NL80211_STA_WME_MAX_SP])
3810 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3811
3812 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3813 return -EINVAL;
3814
3815 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3816
3817 return 0;
3818 }
3819
3820 static int nl80211_set_station_tdls(struct genl_info *info,
3821 struct station_parameters *params)
3822 {
3823 /* Dummy STA entry gets updated once the peer capabilities are known */
3824 if (info->attrs[NL80211_ATTR_PEER_AID])
3825 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3826 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3827 params->ht_capa =
3828 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3829 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3830 params->vht_capa =
3831 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3832
3833 return nl80211_parse_sta_wme(info, params);
3834 }
3835
3836 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3837 {
3838 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3839 struct net_device *dev = info->user_ptr[1];
3840 struct station_parameters params;
3841 u8 *mac_addr;
3842 int err;
3843
3844 memset(&params, 0, sizeof(params));
3845
3846 params.listen_interval = -1;
3847
3848 if (!rdev->ops->change_station)
3849 return -EOPNOTSUPP;
3850
3851 if (info->attrs[NL80211_ATTR_STA_AID])
3852 return -EINVAL;
3853
3854 if (!info->attrs[NL80211_ATTR_MAC])
3855 return -EINVAL;
3856
3857 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3858
3859 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3860 params.supported_rates =
3861 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3862 params.supported_rates_len =
3863 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3864 }
3865
3866 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3867 params.capability =
3868 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3869 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3870 }
3871
3872 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3873 params.ext_capab =
3874 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3875 params.ext_capab_len =
3876 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3877 }
3878
3879 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3880 return -EINVAL;
3881
3882 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3883 return -EINVAL;
3884
3885 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3886 params.plink_action =
3887 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3888 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3889 return -EINVAL;
3890 }
3891
3892 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3893 params.plink_state =
3894 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3895 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3896 return -EINVAL;
3897 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3898 }
3899
3900 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3901 enum nl80211_mesh_power_mode pm = nla_get_u32(
3902 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3903
3904 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3905 pm > NL80211_MESH_POWER_MAX)
3906 return -EINVAL;
3907
3908 params.local_pm = pm;
3909 }
3910
3911 /* Include parameters for TDLS peer (will check later) */
3912 err = nl80211_set_station_tdls(info, &params);
3913 if (err)
3914 return err;
3915
3916 params.vlan = get_vlan(info, rdev);
3917 if (IS_ERR(params.vlan))
3918 return PTR_ERR(params.vlan);
3919
3920 switch (dev->ieee80211_ptr->iftype) {
3921 case NL80211_IFTYPE_AP:
3922 case NL80211_IFTYPE_AP_VLAN:
3923 case NL80211_IFTYPE_P2P_GO:
3924 case NL80211_IFTYPE_P2P_CLIENT:
3925 case NL80211_IFTYPE_STATION:
3926 case NL80211_IFTYPE_ADHOC:
3927 case NL80211_IFTYPE_MESH_POINT:
3928 break;
3929 default:
3930 err = -EOPNOTSUPP;
3931 goto out_put_vlan;
3932 }
3933
3934 /* driver will call cfg80211_check_station_change() */
3935 err = rdev_change_station(rdev, dev, mac_addr, &params);
3936
3937 out_put_vlan:
3938 if (params.vlan)
3939 dev_put(params.vlan);
3940
3941 return err;
3942 }
3943
3944 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3945 {
3946 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3947 int err;
3948 struct net_device *dev = info->user_ptr[1];
3949 struct station_parameters params;
3950 u8 *mac_addr = NULL;
3951
3952 memset(&params, 0, sizeof(params));
3953
3954 if (!rdev->ops->add_station)
3955 return -EOPNOTSUPP;
3956
3957 if (!info->attrs[NL80211_ATTR_MAC])
3958 return -EINVAL;
3959
3960 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3961 return -EINVAL;
3962
3963 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3964 return -EINVAL;
3965
3966 if (!info->attrs[NL80211_ATTR_STA_AID] &&
3967 !info->attrs[NL80211_ATTR_PEER_AID])
3968 return -EINVAL;
3969
3970 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3971 params.supported_rates =
3972 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3973 params.supported_rates_len =
3974 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3975 params.listen_interval =
3976 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3977
3978 if (info->attrs[NL80211_ATTR_STA_AID])
3979 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3980 else
3981 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3982 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3983 return -EINVAL;
3984
3985 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3986 params.capability =
3987 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3988 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3989 }
3990
3991 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3992 params.ext_capab =
3993 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3994 params.ext_capab_len =
3995 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3996 }
3997
3998 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3999 params.ht_capa =
4000 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4001
4002 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4003 params.vht_capa =
4004 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4005
4006 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4007 params.plink_action =
4008 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4009 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4010 return -EINVAL;
4011 }
4012
4013 err = nl80211_parse_sta_wme(info, &params);
4014 if (err)
4015 return err;
4016
4017 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4018 return -EINVAL;
4019
4020 /* When you run into this, adjust the code below for the new flag */
4021 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4022
4023 switch (dev->ieee80211_ptr->iftype) {
4024 case NL80211_IFTYPE_AP:
4025 case NL80211_IFTYPE_AP_VLAN:
4026 case NL80211_IFTYPE_P2P_GO:
4027 /* ignore WME attributes if iface/sta is not capable */
4028 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4029 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4030 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4031
4032 /* TDLS peers cannot be added */
4033 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4034 return -EINVAL;
4035 /* but don't bother the driver with it */
4036 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4037
4038 /* allow authenticated/associated only if driver handles it */
4039 if (!(rdev->wiphy.features &
4040 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4041 params.sta_flags_mask &
4042 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4043 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4044 return -EINVAL;
4045
4046 /* must be last in here for error handling */
4047 params.vlan = get_vlan(info, rdev);
4048 if (IS_ERR(params.vlan))
4049 return PTR_ERR(params.vlan);
4050 break;
4051 case NL80211_IFTYPE_MESH_POINT:
4052 /* ignore uAPSD data */
4053 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4054
4055 /* associated is disallowed */
4056 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4057 return -EINVAL;
4058 /* TDLS peers cannot be added */
4059 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4060 return -EINVAL;
4061 break;
4062 case NL80211_IFTYPE_STATION:
4063 case NL80211_IFTYPE_P2P_CLIENT:
4064 /* ignore uAPSD data */
4065 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4066
4067 /* these are disallowed */
4068 if (params.sta_flags_mask &
4069 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4070 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4071 return -EINVAL;
4072 /* Only TDLS peers can be added */
4073 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4074 return -EINVAL;
4075 /* Can only add if TDLS ... */
4076 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4077 return -EOPNOTSUPP;
4078 /* ... with external setup is supported */
4079 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4080 return -EOPNOTSUPP;
4081 /*
4082 * Older wpa_supplicant versions always mark the TDLS peer
4083 * as authorized, but it shouldn't yet be.
4084 */
4085 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4086 break;
4087 default:
4088 return -EOPNOTSUPP;
4089 }
4090
4091 /* be aware of params.vlan when changing code here */
4092
4093 err = rdev_add_station(rdev, dev, mac_addr, &params);
4094
4095 if (params.vlan)
4096 dev_put(params.vlan);
4097 return err;
4098 }
4099
4100 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4101 {
4102 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4103 struct net_device *dev = info->user_ptr[1];
4104 u8 *mac_addr = NULL;
4105
4106 if (info->attrs[NL80211_ATTR_MAC])
4107 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4108
4109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4110 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4111 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4112 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4113 return -EINVAL;
4114
4115 if (!rdev->ops->del_station)
4116 return -EOPNOTSUPP;
4117
4118 return rdev_del_station(rdev, dev, mac_addr);
4119 }
4120
4121 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4122 int flags, struct net_device *dev,
4123 u8 *dst, u8 *next_hop,
4124 struct mpath_info *pinfo)
4125 {
4126 void *hdr;
4127 struct nlattr *pinfoattr;
4128
4129 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4130 if (!hdr)
4131 return -1;
4132
4133 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4134 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4135 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4136 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4137 goto nla_put_failure;
4138
4139 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4140 if (!pinfoattr)
4141 goto nla_put_failure;
4142 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4143 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4144 pinfo->frame_qlen))
4145 goto nla_put_failure;
4146 if (((pinfo->filled & MPATH_INFO_SN) &&
4147 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4148 ((pinfo->filled & MPATH_INFO_METRIC) &&
4149 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4150 pinfo->metric)) ||
4151 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4152 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4153 pinfo->exptime)) ||
4154 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4155 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4156 pinfo->flags)) ||
4157 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4158 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4159 pinfo->discovery_timeout)) ||
4160 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4161 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4162 pinfo->discovery_retries)))
4163 goto nla_put_failure;
4164
4165 nla_nest_end(msg, pinfoattr);
4166
4167 return genlmsg_end(msg, hdr);
4168
4169 nla_put_failure:
4170 genlmsg_cancel(msg, hdr);
4171 return -EMSGSIZE;
4172 }
4173
4174 static int nl80211_dump_mpath(struct sk_buff *skb,
4175 struct netlink_callback *cb)
4176 {
4177 struct mpath_info pinfo;
4178 struct cfg80211_registered_device *dev;
4179 struct wireless_dev *wdev;
4180 u8 dst[ETH_ALEN];
4181 u8 next_hop[ETH_ALEN];
4182 int path_idx = cb->args[2];
4183 int err;
4184
4185 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4186 if (err)
4187 return err;
4188
4189 if (!dev->ops->dump_mpath) {
4190 err = -EOPNOTSUPP;
4191 goto out_err;
4192 }
4193
4194 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4195 err = -EOPNOTSUPP;
4196 goto out_err;
4197 }
4198
4199 while (1) {
4200 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4201 next_hop, &pinfo);
4202 if (err == -ENOENT)
4203 break;
4204 if (err)
4205 goto out_err;
4206
4207 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4208 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4209 wdev->netdev, dst, next_hop,
4210 &pinfo) < 0)
4211 goto out;
4212
4213 path_idx++;
4214 }
4215
4216
4217 out:
4218 cb->args[2] = path_idx;
4219 err = skb->len;
4220 out_err:
4221 nl80211_finish_wdev_dump(dev);
4222 return err;
4223 }
4224
4225 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4226 {
4227 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4228 int err;
4229 struct net_device *dev = info->user_ptr[1];
4230 struct mpath_info pinfo;
4231 struct sk_buff *msg;
4232 u8 *dst = NULL;
4233 u8 next_hop[ETH_ALEN];
4234
4235 memset(&pinfo, 0, sizeof(pinfo));
4236
4237 if (!info->attrs[NL80211_ATTR_MAC])
4238 return -EINVAL;
4239
4240 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4241
4242 if (!rdev->ops->get_mpath)
4243 return -EOPNOTSUPP;
4244
4245 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4246 return -EOPNOTSUPP;
4247
4248 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4249 if (err)
4250 return err;
4251
4252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4253 if (!msg)
4254 return -ENOMEM;
4255
4256 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4257 dev, dst, next_hop, &pinfo) < 0) {
4258 nlmsg_free(msg);
4259 return -ENOBUFS;
4260 }
4261
4262 return genlmsg_reply(msg, info);
4263 }
4264
4265 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4266 {
4267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4268 struct net_device *dev = info->user_ptr[1];
4269 u8 *dst = NULL;
4270 u8 *next_hop = NULL;
4271
4272 if (!info->attrs[NL80211_ATTR_MAC])
4273 return -EINVAL;
4274
4275 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4276 return -EINVAL;
4277
4278 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4279 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4280
4281 if (!rdev->ops->change_mpath)
4282 return -EOPNOTSUPP;
4283
4284 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4285 return -EOPNOTSUPP;
4286
4287 return rdev_change_mpath(rdev, dev, dst, next_hop);
4288 }
4289
4290 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4291 {
4292 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4293 struct net_device *dev = info->user_ptr[1];
4294 u8 *dst = NULL;
4295 u8 *next_hop = NULL;
4296
4297 if (!info->attrs[NL80211_ATTR_MAC])
4298 return -EINVAL;
4299
4300 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4301 return -EINVAL;
4302
4303 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4304 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4305
4306 if (!rdev->ops->add_mpath)
4307 return -EOPNOTSUPP;
4308
4309 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4310 return -EOPNOTSUPP;
4311
4312 return rdev_add_mpath(rdev, dev, dst, next_hop);
4313 }
4314
4315 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4316 {
4317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4318 struct net_device *dev = info->user_ptr[1];
4319 u8 *dst = NULL;
4320
4321 if (info->attrs[NL80211_ATTR_MAC])
4322 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4323
4324 if (!rdev->ops->del_mpath)
4325 return -EOPNOTSUPP;
4326
4327 return rdev_del_mpath(rdev, dev, dst);
4328 }
4329
4330 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4331 {
4332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4333 struct net_device *dev = info->user_ptr[1];
4334 struct bss_parameters params;
4335
4336 memset(&params, 0, sizeof(params));
4337 /* default to not changing parameters */
4338 params.use_cts_prot = -1;
4339 params.use_short_preamble = -1;
4340 params.use_short_slot_time = -1;
4341 params.ap_isolate = -1;
4342 params.ht_opmode = -1;
4343 params.p2p_ctwindow = -1;
4344 params.p2p_opp_ps = -1;
4345
4346 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4347 params.use_cts_prot =
4348 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4349 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4350 params.use_short_preamble =
4351 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4352 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4353 params.use_short_slot_time =
4354 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4355 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4356 params.basic_rates =
4357 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4358 params.basic_rates_len =
4359 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4360 }
4361 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4362 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4363 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4364 params.ht_opmode =
4365 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4366
4367 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4369 return -EINVAL;
4370 params.p2p_ctwindow =
4371 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4372 if (params.p2p_ctwindow < 0)
4373 return -EINVAL;
4374 if (params.p2p_ctwindow != 0 &&
4375 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4376 return -EINVAL;
4377 }
4378
4379 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4380 u8 tmp;
4381
4382 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4383 return -EINVAL;
4384 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4385 if (tmp > 1)
4386 return -EINVAL;
4387 params.p2p_opp_ps = tmp;
4388 if (params.p2p_opp_ps &&
4389 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4390 return -EINVAL;
4391 }
4392
4393 if (!rdev->ops->change_bss)
4394 return -EOPNOTSUPP;
4395
4396 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4398 return -EOPNOTSUPP;
4399
4400 return rdev_change_bss(rdev, dev, &params);
4401 }
4402
4403 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4404 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4405 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4406 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4407 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4408 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4409 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4410 };
4411
4412 static int parse_reg_rule(struct nlattr *tb[],
4413 struct ieee80211_reg_rule *reg_rule)
4414 {
4415 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4416 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4417
4418 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4419 return -EINVAL;
4420 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4421 return -EINVAL;
4422 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4423 return -EINVAL;
4424 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4425 return -EINVAL;
4426 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4427 return -EINVAL;
4428
4429 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4430
4431 freq_range->start_freq_khz =
4432 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4433 freq_range->end_freq_khz =
4434 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4435 freq_range->max_bandwidth_khz =
4436 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4437
4438 power_rule->max_eirp =
4439 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4440
4441 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4442 power_rule->max_antenna_gain =
4443 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4444
4445 return 0;
4446 }
4447
4448 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4449 {
4450 int r;
4451 char *data = NULL;
4452 enum nl80211_user_reg_hint_type user_reg_hint_type;
4453
4454 /*
4455 * You should only get this when cfg80211 hasn't yet initialized
4456 * completely when built-in to the kernel right between the time
4457 * window between nl80211_init() and regulatory_init(), if that is
4458 * even possible.
4459 */
4460 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4461 return -EINPROGRESS;
4462
4463 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4464 return -EINVAL;
4465
4466 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4467
4468 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4469 user_reg_hint_type =
4470 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4471 else
4472 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4473
4474 switch (user_reg_hint_type) {
4475 case NL80211_USER_REG_HINT_USER:
4476 case NL80211_USER_REG_HINT_CELL_BASE:
4477 break;
4478 default:
4479 return -EINVAL;
4480 }
4481
4482 r = regulatory_hint_user(data, user_reg_hint_type);
4483
4484 return r;
4485 }
4486
4487 static int nl80211_get_mesh_config(struct sk_buff *skb,
4488 struct genl_info *info)
4489 {
4490 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4491 struct net_device *dev = info->user_ptr[1];
4492 struct wireless_dev *wdev = dev->ieee80211_ptr;
4493 struct mesh_config cur_params;
4494 int err = 0;
4495 void *hdr;
4496 struct nlattr *pinfoattr;
4497 struct sk_buff *msg;
4498
4499 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4500 return -EOPNOTSUPP;
4501
4502 if (!rdev->ops->get_mesh_config)
4503 return -EOPNOTSUPP;
4504
4505 wdev_lock(wdev);
4506 /* If not connected, get default parameters */
4507 if (!wdev->mesh_id_len)
4508 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4509 else
4510 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4511 wdev_unlock(wdev);
4512
4513 if (err)
4514 return err;
4515
4516 /* Draw up a netlink message to send back */
4517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4518 if (!msg)
4519 return -ENOMEM;
4520 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4521 NL80211_CMD_GET_MESH_CONFIG);
4522 if (!hdr)
4523 goto out;
4524 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4525 if (!pinfoattr)
4526 goto nla_put_failure;
4527 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4528 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4529 cur_params.dot11MeshRetryTimeout) ||
4530 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4531 cur_params.dot11MeshConfirmTimeout) ||
4532 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4533 cur_params.dot11MeshHoldingTimeout) ||
4534 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4535 cur_params.dot11MeshMaxPeerLinks) ||
4536 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4537 cur_params.dot11MeshMaxRetries) ||
4538 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4539 cur_params.dot11MeshTTL) ||
4540 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4541 cur_params.element_ttl) ||
4542 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4543 cur_params.auto_open_plinks) ||
4544 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4545 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4546 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4547 cur_params.dot11MeshHWMPmaxPREQretries) ||
4548 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4549 cur_params.path_refresh_time) ||
4550 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4551 cur_params.min_discovery_timeout) ||
4552 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4553 cur_params.dot11MeshHWMPactivePathTimeout) ||
4554 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4555 cur_params.dot11MeshHWMPpreqMinInterval) ||
4556 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4557 cur_params.dot11MeshHWMPperrMinInterval) ||
4558 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4559 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4560 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4561 cur_params.dot11MeshHWMPRootMode) ||
4562 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4563 cur_params.dot11MeshHWMPRannInterval) ||
4564 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4565 cur_params.dot11MeshGateAnnouncementProtocol) ||
4566 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4567 cur_params.dot11MeshForwarding) ||
4568 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4569 cur_params.rssi_threshold) ||
4570 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4571 cur_params.ht_opmode) ||
4572 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4573 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4574 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4575 cur_params.dot11MeshHWMProotInterval) ||
4576 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4577 cur_params.dot11MeshHWMPconfirmationInterval) ||
4578 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4579 cur_params.power_mode) ||
4580 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4581 cur_params.dot11MeshAwakeWindowDuration))
4582 goto nla_put_failure;
4583 nla_nest_end(msg, pinfoattr);
4584 genlmsg_end(msg, hdr);
4585 return genlmsg_reply(msg, info);
4586
4587 nla_put_failure:
4588 genlmsg_cancel(msg, hdr);
4589 out:
4590 nlmsg_free(msg);
4591 return -ENOBUFS;
4592 }
4593
4594 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4595 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4596 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4597 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4598 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4599 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4600 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4601 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4602 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4603 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4604 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4605 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4606 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4607 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4608 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4609 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4610 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4611 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4612 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4613 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4614 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4615 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4616 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4617 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4618 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4619 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4620 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4621 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4622 };
4623
4624 static const struct nla_policy
4625 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4626 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4627 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4628 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4629 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4630 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4631 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4632 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4633 .len = IEEE80211_MAX_DATA_LEN },
4634 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4635 };
4636
4637 static int nl80211_parse_mesh_config(struct genl_info *info,
4638 struct mesh_config *cfg,
4639 u32 *mask_out)
4640 {
4641 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4642 u32 mask = 0;
4643
4644 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4645 do { \
4646 if (tb[attr]) { \
4647 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4648 return -EINVAL; \
4649 cfg->param = fn(tb[attr]); \
4650 mask |= (1 << (attr - 1)); \
4651 } \
4652 } while (0)
4653
4654
4655 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4656 return -EINVAL;
4657 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4658 info->attrs[NL80211_ATTR_MESH_CONFIG],
4659 nl80211_meshconf_params_policy))
4660 return -EINVAL;
4661
4662 /* This makes sure that there aren't more than 32 mesh config
4663 * parameters (otherwise our bitfield scheme would not work.) */
4664 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4665
4666 /* Fill in the params struct */
4667 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4668 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4669 nla_get_u16);
4670 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4671 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4672 nla_get_u16);
4673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4674 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4675 nla_get_u16);
4676 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4677 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4678 nla_get_u16);
4679 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4680 mask, NL80211_MESHCONF_MAX_RETRIES,
4681 nla_get_u8);
4682 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4683 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4684 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4685 mask, NL80211_MESHCONF_ELEMENT_TTL,
4686 nla_get_u8);
4687 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4688 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4689 nla_get_u8);
4690 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4691 1, 255, mask,
4692 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4693 nla_get_u32);
4694 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4695 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4696 nla_get_u8);
4697 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4698 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4699 nla_get_u32);
4700 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4701 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4702 nla_get_u16);
4703 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4704 1, 65535, mask,
4705 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4706 nla_get_u32);
4707 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4708 1, 65535, mask,
4709 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4710 nla_get_u16);
4711 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4712 1, 65535, mask,
4713 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4714 nla_get_u16);
4715 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4716 dot11MeshHWMPnetDiameterTraversalTime,
4717 1, 65535, mask,
4718 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4719 nla_get_u16);
4720 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4721 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4722 nla_get_u8);
4723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4724 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4725 nla_get_u16);
4726 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4727 dot11MeshGateAnnouncementProtocol, 0, 1,
4728 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4729 nla_get_u8);
4730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4731 mask, NL80211_MESHCONF_FORWARDING,
4732 nla_get_u8);
4733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4734 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4735 nla_get_u32);
4736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4737 mask, NL80211_MESHCONF_HT_OPMODE,
4738 nla_get_u16);
4739 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4740 1, 65535, mask,
4741 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4742 nla_get_u32);
4743 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4744 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4745 nla_get_u16);
4746 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4747 dot11MeshHWMPconfirmationInterval,
4748 1, 65535, mask,
4749 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4750 nla_get_u16);
4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4752 NL80211_MESH_POWER_ACTIVE,
4753 NL80211_MESH_POWER_MAX,
4754 mask, NL80211_MESHCONF_POWER_MODE,
4755 nla_get_u32);
4756 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4757 0, 65535, mask,
4758 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4759 if (mask_out)
4760 *mask_out = mask;
4761
4762 return 0;
4763
4764 #undef FILL_IN_MESH_PARAM_IF_SET
4765 }
4766
4767 static int nl80211_parse_mesh_setup(struct genl_info *info,
4768 struct mesh_setup *setup)
4769 {
4770 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4771 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4772
4773 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4774 return -EINVAL;
4775 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4776 info->attrs[NL80211_ATTR_MESH_SETUP],
4777 nl80211_mesh_setup_params_policy))
4778 return -EINVAL;
4779
4780 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4781 setup->sync_method =
4782 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4783 IEEE80211_SYNC_METHOD_VENDOR :
4784 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4785
4786 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4787 setup->path_sel_proto =
4788 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4789 IEEE80211_PATH_PROTOCOL_VENDOR :
4790 IEEE80211_PATH_PROTOCOL_HWMP;
4791
4792 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4793 setup->path_metric =
4794 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4795 IEEE80211_PATH_METRIC_VENDOR :
4796 IEEE80211_PATH_METRIC_AIRTIME;
4797
4798
4799 if (tb[NL80211_MESH_SETUP_IE]) {
4800 struct nlattr *ieattr =
4801 tb[NL80211_MESH_SETUP_IE];
4802 if (!is_valid_ie_attr(ieattr))
4803 return -EINVAL;
4804 setup->ie = nla_data(ieattr);
4805 setup->ie_len = nla_len(ieattr);
4806 }
4807 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4808 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4809 return -EINVAL;
4810 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4811 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4812 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4813 if (setup->is_secure)
4814 setup->user_mpm = true;
4815
4816 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4817 if (!setup->user_mpm)
4818 return -EINVAL;
4819 setup->auth_id =
4820 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4821 }
4822
4823 return 0;
4824 }
4825
4826 static int nl80211_update_mesh_config(struct sk_buff *skb,
4827 struct genl_info *info)
4828 {
4829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4830 struct net_device *dev = info->user_ptr[1];
4831 struct wireless_dev *wdev = dev->ieee80211_ptr;
4832 struct mesh_config cfg;
4833 u32 mask;
4834 int err;
4835
4836 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4837 return -EOPNOTSUPP;
4838
4839 if (!rdev->ops->update_mesh_config)
4840 return -EOPNOTSUPP;
4841
4842 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4843 if (err)
4844 return err;
4845
4846 wdev_lock(wdev);
4847 if (!wdev->mesh_id_len)
4848 err = -ENOLINK;
4849
4850 if (!err)
4851 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4852
4853 wdev_unlock(wdev);
4854
4855 return err;
4856 }
4857
4858 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4859 {
4860 const struct ieee80211_regdomain *regdom;
4861 struct sk_buff *msg;
4862 void *hdr = NULL;
4863 struct nlattr *nl_reg_rules;
4864 unsigned int i;
4865
4866 if (!cfg80211_regdomain)
4867 return -EINVAL;
4868
4869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4870 if (!msg)
4871 return -ENOBUFS;
4872
4873 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4874 NL80211_CMD_GET_REG);
4875 if (!hdr)
4876 goto put_failure;
4877
4878 if (reg_last_request_cell_base() &&
4879 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4880 NL80211_USER_REG_HINT_CELL_BASE))
4881 goto nla_put_failure;
4882
4883 rcu_read_lock();
4884 regdom = rcu_dereference(cfg80211_regdomain);
4885
4886 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4887 (regdom->dfs_region &&
4888 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4889 goto nla_put_failure_rcu;
4890
4891 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4892 if (!nl_reg_rules)
4893 goto nla_put_failure_rcu;
4894
4895 for (i = 0; i < regdom->n_reg_rules; i++) {
4896 struct nlattr *nl_reg_rule;
4897 const struct ieee80211_reg_rule *reg_rule;
4898 const struct ieee80211_freq_range *freq_range;
4899 const struct ieee80211_power_rule *power_rule;
4900
4901 reg_rule = &regdom->reg_rules[i];
4902 freq_range = &reg_rule->freq_range;
4903 power_rule = &reg_rule->power_rule;
4904
4905 nl_reg_rule = nla_nest_start(msg, i);
4906 if (!nl_reg_rule)
4907 goto nla_put_failure_rcu;
4908
4909 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4910 reg_rule->flags) ||
4911 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4912 freq_range->start_freq_khz) ||
4913 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4914 freq_range->end_freq_khz) ||
4915 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4916 freq_range->max_bandwidth_khz) ||
4917 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4918 power_rule->max_antenna_gain) ||
4919 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4920 power_rule->max_eirp))
4921 goto nla_put_failure_rcu;
4922
4923 nla_nest_end(msg, nl_reg_rule);
4924 }
4925 rcu_read_unlock();
4926
4927 nla_nest_end(msg, nl_reg_rules);
4928
4929 genlmsg_end(msg, hdr);
4930 return genlmsg_reply(msg, info);
4931
4932 nla_put_failure_rcu:
4933 rcu_read_unlock();
4934 nla_put_failure:
4935 genlmsg_cancel(msg, hdr);
4936 put_failure:
4937 nlmsg_free(msg);
4938 return -EMSGSIZE;
4939 }
4940
4941 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4942 {
4943 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4944 struct nlattr *nl_reg_rule;
4945 char *alpha2 = NULL;
4946 int rem_reg_rules = 0, r = 0;
4947 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4948 u8 dfs_region = 0;
4949 struct ieee80211_regdomain *rd = NULL;
4950
4951 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4952 return -EINVAL;
4953
4954 if (!info->attrs[NL80211_ATTR_REG_RULES])
4955 return -EINVAL;
4956
4957 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4958
4959 if (info->attrs[NL80211_ATTR_DFS_REGION])
4960 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4961
4962 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4963 rem_reg_rules) {
4964 num_rules++;
4965 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4966 return -EINVAL;
4967 }
4968
4969 size_of_regd = sizeof(struct ieee80211_regdomain) +
4970 num_rules * sizeof(struct ieee80211_reg_rule);
4971
4972 rd = kzalloc(size_of_regd, GFP_KERNEL);
4973 if (!rd)
4974 return -ENOMEM;
4975
4976 rd->n_reg_rules = num_rules;
4977 rd->alpha2[0] = alpha2[0];
4978 rd->alpha2[1] = alpha2[1];
4979
4980 /*
4981 * Disable DFS master mode if the DFS region was
4982 * not supported or known on this kernel.
4983 */
4984 if (reg_supported_dfs_region(dfs_region))
4985 rd->dfs_region = dfs_region;
4986
4987 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4988 rem_reg_rules) {
4989 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4990 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4991 reg_rule_policy);
4992 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4993 if (r)
4994 goto bad_reg;
4995
4996 rule_idx++;
4997
4998 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4999 r = -EINVAL;
5000 goto bad_reg;
5001 }
5002 }
5003
5004 r = set_regdom(rd);
5005 /* set_regdom took ownership */
5006 rd = NULL;
5007
5008 bad_reg:
5009 kfree(rd);
5010 return r;
5011 }
5012
5013 static int validate_scan_freqs(struct nlattr *freqs)
5014 {
5015 struct nlattr *attr1, *attr2;
5016 int n_channels = 0, tmp1, tmp2;
5017
5018 nla_for_each_nested(attr1, freqs, tmp1) {
5019 n_channels++;
5020 /*
5021 * Some hardware has a limited channel list for
5022 * scanning, and it is pretty much nonsensical
5023 * to scan for a channel twice, so disallow that
5024 * and don't require drivers to check that the
5025 * channel list they get isn't longer than what
5026 * they can scan, as long as they can scan all
5027 * the channels they registered at once.
5028 */
5029 nla_for_each_nested(attr2, freqs, tmp2)
5030 if (attr1 != attr2 &&
5031 nla_get_u32(attr1) == nla_get_u32(attr2))
5032 return 0;
5033 }
5034
5035 return n_channels;
5036 }
5037
5038 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5039 {
5040 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5041 struct wireless_dev *wdev = info->user_ptr[1];
5042 struct cfg80211_scan_request *request;
5043 struct nlattr *attr;
5044 struct wiphy *wiphy;
5045 int err, tmp, n_ssids = 0, n_channels, i;
5046 size_t ie_len;
5047
5048 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5049 return -EINVAL;
5050
5051 wiphy = &rdev->wiphy;
5052
5053 if (!rdev->ops->scan)
5054 return -EOPNOTSUPP;
5055
5056 if (rdev->scan_req) {
5057 err = -EBUSY;
5058 goto unlock;
5059 }
5060
5061 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5062 n_channels = validate_scan_freqs(
5063 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5064 if (!n_channels) {
5065 err = -EINVAL;
5066 goto unlock;
5067 }
5068 } else {
5069 enum ieee80211_band band;
5070 n_channels = 0;
5071
5072 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5073 if (wiphy->bands[band])
5074 n_channels += wiphy->bands[band]->n_channels;
5075 }
5076
5077 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5078 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5079 n_ssids++;
5080
5081 if (n_ssids > wiphy->max_scan_ssids) {
5082 err = -EINVAL;
5083 goto unlock;
5084 }
5085
5086 if (info->attrs[NL80211_ATTR_IE])
5087 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5088 else
5089 ie_len = 0;
5090
5091 if (ie_len > wiphy->max_scan_ie_len) {
5092 err = -EINVAL;
5093 goto unlock;
5094 }
5095
5096 request = kzalloc(sizeof(*request)
5097 + sizeof(*request->ssids) * n_ssids
5098 + sizeof(*request->channels) * n_channels
5099 + ie_len, GFP_KERNEL);
5100 if (!request) {
5101 err = -ENOMEM;
5102 goto unlock;
5103 }
5104
5105 if (n_ssids)
5106 request->ssids = (void *)&request->channels[n_channels];
5107 request->n_ssids = n_ssids;
5108 if (ie_len) {
5109 if (request->ssids)
5110 request->ie = (void *)(request->ssids + n_ssids);
5111 else
5112 request->ie = (void *)(request->channels + n_channels);
5113 }
5114
5115 i = 0;
5116 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5117 /* user specified, bail out if channel not found */
5118 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5119 struct ieee80211_channel *chan;
5120
5121 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5122
5123 if (!chan) {
5124 err = -EINVAL;
5125 goto out_free;
5126 }
5127
5128 /* ignore disabled channels */
5129 if (chan->flags & IEEE80211_CHAN_DISABLED)
5130 continue;
5131
5132 request->channels[i] = chan;
5133 i++;
5134 }
5135 } else {
5136 enum ieee80211_band band;
5137
5138 /* all channels */
5139 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5140 int j;
5141 if (!wiphy->bands[band])
5142 continue;
5143 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5144 struct ieee80211_channel *chan;
5145
5146 chan = &wiphy->bands[band]->channels[j];
5147
5148 if (chan->flags & IEEE80211_CHAN_DISABLED)
5149 continue;
5150
5151 request->channels[i] = chan;
5152 i++;
5153 }
5154 }
5155 }
5156
5157 if (!i) {
5158 err = -EINVAL;
5159 goto out_free;
5160 }
5161
5162 request->n_channels = i;
5163
5164 i = 0;
5165 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5166 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5167 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5168 err = -EINVAL;
5169 goto out_free;
5170 }
5171 request->ssids[i].ssid_len = nla_len(attr);
5172 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5173 i++;
5174 }
5175 }
5176
5177 if (info->attrs[NL80211_ATTR_IE]) {
5178 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5179 memcpy((void *)request->ie,
5180 nla_data(info->attrs[NL80211_ATTR_IE]),
5181 request->ie_len);
5182 }
5183
5184 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5185 if (wiphy->bands[i])
5186 request->rates[i] =
5187 (1 << wiphy->bands[i]->n_bitrates) - 1;
5188
5189 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5190 nla_for_each_nested(attr,
5191 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5192 tmp) {
5193 enum ieee80211_band band = nla_type(attr);
5194
5195 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5196 err = -EINVAL;
5197 goto out_free;
5198 }
5199 err = ieee80211_get_ratemask(wiphy->bands[band],
5200 nla_data(attr),
5201 nla_len(attr),
5202 &request->rates[band]);
5203 if (err)
5204 goto out_free;
5205 }
5206 }
5207
5208 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5209 request->flags = nla_get_u32(
5210 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5211 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5212 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5213 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5214 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5215 err = -EOPNOTSUPP;
5216 goto out_free;
5217 }
5218 }
5219
5220 request->no_cck =
5221 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5222
5223 request->wdev = wdev;
5224 request->wiphy = &rdev->wiphy;
5225 request->scan_start = jiffies;
5226
5227 rdev->scan_req = request;
5228 err = rdev_scan(rdev, request);
5229
5230 if (!err) {
5231 nl80211_send_scan_start(rdev, wdev);
5232 if (wdev->netdev)
5233 dev_hold(wdev->netdev);
5234 } else {
5235 out_free:
5236 rdev->scan_req = NULL;
5237 kfree(request);
5238 }
5239
5240 unlock:
5241 return err;
5242 }
5243
5244 static int nl80211_start_sched_scan(struct sk_buff *skb,
5245 struct genl_info *info)
5246 {
5247 struct cfg80211_sched_scan_request *request;
5248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5249 struct net_device *dev = info->user_ptr[1];
5250 struct nlattr *attr;
5251 struct wiphy *wiphy;
5252 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5253 u32 interval;
5254 enum ieee80211_band band;
5255 size_t ie_len;
5256 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5257
5258 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5259 !rdev->ops->sched_scan_start)
5260 return -EOPNOTSUPP;
5261
5262 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5263 return -EINVAL;
5264
5265 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5266 return -EINVAL;
5267
5268 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5269 if (interval == 0)
5270 return -EINVAL;
5271
5272 wiphy = &rdev->wiphy;
5273
5274 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5275 n_channels = validate_scan_freqs(
5276 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5277 if (!n_channels)
5278 return -EINVAL;
5279 } else {
5280 n_channels = 0;
5281
5282 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5283 if (wiphy->bands[band])
5284 n_channels += wiphy->bands[band]->n_channels;
5285 }
5286
5287 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5288 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5289 tmp)
5290 n_ssids++;
5291
5292 if (n_ssids > wiphy->max_sched_scan_ssids)
5293 return -EINVAL;
5294
5295 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5296 nla_for_each_nested(attr,
5297 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5298 tmp)
5299 n_match_sets++;
5300
5301 if (n_match_sets > wiphy->max_match_sets)
5302 return -EINVAL;
5303
5304 if (info->attrs[NL80211_ATTR_IE])
5305 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5306 else
5307 ie_len = 0;
5308
5309 if (ie_len > wiphy->max_sched_scan_ie_len)
5310 return -EINVAL;
5311
5312 if (rdev->sched_scan_req) {
5313 err = -EINPROGRESS;
5314 goto out;
5315 }
5316
5317 request = kzalloc(sizeof(*request)
5318 + sizeof(*request->ssids) * n_ssids
5319 + sizeof(*request->match_sets) * n_match_sets
5320 + sizeof(*request->channels) * n_channels
5321 + ie_len, GFP_KERNEL);
5322 if (!request) {
5323 err = -ENOMEM;
5324 goto out;
5325 }
5326
5327 if (n_ssids)
5328 request->ssids = (void *)&request->channels[n_channels];
5329 request->n_ssids = n_ssids;
5330 if (ie_len) {
5331 if (request->ssids)
5332 request->ie = (void *)(request->ssids + n_ssids);
5333 else
5334 request->ie = (void *)(request->channels + n_channels);
5335 }
5336
5337 if (n_match_sets) {
5338 if (request->ie)
5339 request->match_sets = (void *)(request->ie + ie_len);
5340 else if (request->ssids)
5341 request->match_sets =
5342 (void *)(request->ssids + n_ssids);
5343 else
5344 request->match_sets =
5345 (void *)(request->channels + n_channels);
5346 }
5347 request->n_match_sets = n_match_sets;
5348
5349 i = 0;
5350 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5351 /* user specified, bail out if channel not found */
5352 nla_for_each_nested(attr,
5353 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5354 tmp) {
5355 struct ieee80211_channel *chan;
5356
5357 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5358
5359 if (!chan) {
5360 err = -EINVAL;
5361 goto out_free;
5362 }
5363
5364 /* ignore disabled channels */
5365 if (chan->flags & IEEE80211_CHAN_DISABLED)
5366 continue;
5367
5368 request->channels[i] = chan;
5369 i++;
5370 }
5371 } else {
5372 /* all channels */
5373 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5374 int j;
5375 if (!wiphy->bands[band])
5376 continue;
5377 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5378 struct ieee80211_channel *chan;
5379
5380 chan = &wiphy->bands[band]->channels[j];
5381
5382 if (chan->flags & IEEE80211_CHAN_DISABLED)
5383 continue;
5384
5385 request->channels[i] = chan;
5386 i++;
5387 }
5388 }
5389 }
5390
5391 if (!i) {
5392 err = -EINVAL;
5393 goto out_free;
5394 }
5395
5396 request->n_channels = i;
5397
5398 i = 0;
5399 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5400 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5401 tmp) {
5402 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5403 err = -EINVAL;
5404 goto out_free;
5405 }
5406 request->ssids[i].ssid_len = nla_len(attr);
5407 memcpy(request->ssids[i].ssid, nla_data(attr),
5408 nla_len(attr));
5409 i++;
5410 }
5411 }
5412
5413 i = 0;
5414 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5415 nla_for_each_nested(attr,
5416 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5417 tmp) {
5418 struct nlattr *ssid, *rssi;
5419
5420 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5421 nla_data(attr), nla_len(attr),
5422 nl80211_match_policy);
5423 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5424 if (ssid) {
5425 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5426 err = -EINVAL;
5427 goto out_free;
5428 }
5429 memcpy(request->match_sets[i].ssid.ssid,
5430 nla_data(ssid), nla_len(ssid));
5431 request->match_sets[i].ssid.ssid_len =
5432 nla_len(ssid);
5433 }
5434 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5435 if (rssi)
5436 request->rssi_thold = nla_get_u32(rssi);
5437 else
5438 request->rssi_thold =
5439 NL80211_SCAN_RSSI_THOLD_OFF;
5440 i++;
5441 }
5442 }
5443
5444 if (info->attrs[NL80211_ATTR_IE]) {
5445 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5446 memcpy((void *)request->ie,
5447 nla_data(info->attrs[NL80211_ATTR_IE]),
5448 request->ie_len);
5449 }
5450
5451 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5452 request->flags = nla_get_u32(
5453 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5454 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5455 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5456 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5457 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5458 err = -EOPNOTSUPP;
5459 goto out_free;
5460 }
5461 }
5462
5463 request->dev = dev;
5464 request->wiphy = &rdev->wiphy;
5465 request->interval = interval;
5466 request->scan_start = jiffies;
5467
5468 err = rdev_sched_scan_start(rdev, dev, request);
5469 if (!err) {
5470 rdev->sched_scan_req = request;
5471 nl80211_send_sched_scan(rdev, dev,
5472 NL80211_CMD_START_SCHED_SCAN);
5473 goto out;
5474 }
5475
5476 out_free:
5477 kfree(request);
5478 out:
5479 return err;
5480 }
5481
5482 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5483 struct genl_info *info)
5484 {
5485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5486
5487 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5488 !rdev->ops->sched_scan_stop)
5489 return -EOPNOTSUPP;
5490
5491 return __cfg80211_stop_sched_scan(rdev, false);
5492 }
5493
5494 static int nl80211_start_radar_detection(struct sk_buff *skb,
5495 struct genl_info *info)
5496 {
5497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5498 struct net_device *dev = info->user_ptr[1];
5499 struct wireless_dev *wdev = dev->ieee80211_ptr;
5500 struct cfg80211_chan_def chandef;
5501 int err;
5502
5503 err = nl80211_parse_chandef(rdev, info, &chandef);
5504 if (err)
5505 return err;
5506
5507 if (wdev->cac_started)
5508 return -EBUSY;
5509
5510 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5511 if (err < 0)
5512 return err;
5513
5514 if (err == 0)
5515 return -EINVAL;
5516
5517 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5518 return -EINVAL;
5519
5520 if (!rdev->ops->start_radar_detection)
5521 return -EOPNOTSUPP;
5522
5523 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5524 chandef.chan, CHAN_MODE_SHARED,
5525 BIT(chandef.width));
5526 if (err)
5527 return err;
5528
5529 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5530 if (!err) {
5531 wdev->channel = chandef.chan;
5532 wdev->cac_started = true;
5533 wdev->cac_start_time = jiffies;
5534 }
5535 return err;
5536 }
5537
5538 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5539 u32 seq, int flags,
5540 struct cfg80211_registered_device *rdev,
5541 struct wireless_dev *wdev,
5542 struct cfg80211_internal_bss *intbss)
5543 {
5544 struct cfg80211_bss *res = &intbss->pub;
5545 const struct cfg80211_bss_ies *ies;
5546 void *hdr;
5547 struct nlattr *bss;
5548 bool tsf = false;
5549
5550 ASSERT_WDEV_LOCK(wdev);
5551
5552 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5553 NL80211_CMD_NEW_SCAN_RESULTS);
5554 if (!hdr)
5555 return -1;
5556
5557 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5558
5559 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5560 goto nla_put_failure;
5561 if (wdev->netdev &&
5562 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5563 goto nla_put_failure;
5564 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5565 goto nla_put_failure;
5566
5567 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5568 if (!bss)
5569 goto nla_put_failure;
5570 if ((!is_zero_ether_addr(res->bssid) &&
5571 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5572 goto nla_put_failure;
5573
5574 rcu_read_lock();
5575 ies = rcu_dereference(res->ies);
5576 if (ies) {
5577 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5578 goto fail_unlock_rcu;
5579 tsf = true;
5580 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5581 ies->len, ies->data))
5582 goto fail_unlock_rcu;
5583 }
5584 ies = rcu_dereference(res->beacon_ies);
5585 if (ies) {
5586 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5587 goto fail_unlock_rcu;
5588 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5589 ies->len, ies->data))
5590 goto fail_unlock_rcu;
5591 }
5592 rcu_read_unlock();
5593
5594 if (res->beacon_interval &&
5595 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5596 goto nla_put_failure;
5597 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5598 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5599 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5600 jiffies_to_msecs(jiffies - intbss->ts)))
5601 goto nla_put_failure;
5602
5603 switch (rdev->wiphy.signal_type) {
5604 case CFG80211_SIGNAL_TYPE_MBM:
5605 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5606 goto nla_put_failure;
5607 break;
5608 case CFG80211_SIGNAL_TYPE_UNSPEC:
5609 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5610 goto nla_put_failure;
5611 break;
5612 default:
5613 break;
5614 }
5615
5616 switch (wdev->iftype) {
5617 case NL80211_IFTYPE_P2P_CLIENT:
5618 case NL80211_IFTYPE_STATION:
5619 if (intbss == wdev->current_bss &&
5620 nla_put_u32(msg, NL80211_BSS_STATUS,
5621 NL80211_BSS_STATUS_ASSOCIATED))
5622 goto nla_put_failure;
5623 break;
5624 case NL80211_IFTYPE_ADHOC:
5625 if (intbss == wdev->current_bss &&
5626 nla_put_u32(msg, NL80211_BSS_STATUS,
5627 NL80211_BSS_STATUS_IBSS_JOINED))
5628 goto nla_put_failure;
5629 break;
5630 default:
5631 break;
5632 }
5633
5634 nla_nest_end(msg, bss);
5635
5636 return genlmsg_end(msg, hdr);
5637
5638 fail_unlock_rcu:
5639 rcu_read_unlock();
5640 nla_put_failure:
5641 genlmsg_cancel(msg, hdr);
5642 return -EMSGSIZE;
5643 }
5644
5645 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5646 {
5647 struct cfg80211_registered_device *rdev;
5648 struct cfg80211_internal_bss *scan;
5649 struct wireless_dev *wdev;
5650 int start = cb->args[2], idx = 0;
5651 int err;
5652
5653 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5654 if (err)
5655 return err;
5656
5657 wdev_lock(wdev);
5658 spin_lock_bh(&rdev->bss_lock);
5659 cfg80211_bss_expire(rdev);
5660
5661 cb->seq = rdev->bss_generation;
5662
5663 list_for_each_entry(scan, &rdev->bss_list, list) {
5664 if (++idx <= start)
5665 continue;
5666 if (nl80211_send_bss(skb, cb,
5667 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5668 rdev, wdev, scan) < 0) {
5669 idx--;
5670 break;
5671 }
5672 }
5673
5674 spin_unlock_bh(&rdev->bss_lock);
5675 wdev_unlock(wdev);
5676
5677 cb->args[2] = idx;
5678 nl80211_finish_wdev_dump(rdev);
5679
5680 return skb->len;
5681 }
5682
5683 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5684 int flags, struct net_device *dev,
5685 struct survey_info *survey)
5686 {
5687 void *hdr;
5688 struct nlattr *infoattr;
5689
5690 hdr = nl80211hdr_put(msg, portid, seq, flags,
5691 NL80211_CMD_NEW_SURVEY_RESULTS);
5692 if (!hdr)
5693 return -ENOMEM;
5694
5695 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5696 goto nla_put_failure;
5697
5698 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5699 if (!infoattr)
5700 goto nla_put_failure;
5701
5702 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5703 survey->channel->center_freq))
5704 goto nla_put_failure;
5705
5706 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5707 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5708 goto nla_put_failure;
5709 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5710 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5711 goto nla_put_failure;
5712 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5713 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5714 survey->channel_time))
5715 goto nla_put_failure;
5716 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5717 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5718 survey->channel_time_busy))
5719 goto nla_put_failure;
5720 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5721 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5722 survey->channel_time_ext_busy))
5723 goto nla_put_failure;
5724 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5725 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5726 survey->channel_time_rx))
5727 goto nla_put_failure;
5728 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5729 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5730 survey->channel_time_tx))
5731 goto nla_put_failure;
5732
5733 nla_nest_end(msg, infoattr);
5734
5735 return genlmsg_end(msg, hdr);
5736
5737 nla_put_failure:
5738 genlmsg_cancel(msg, hdr);
5739 return -EMSGSIZE;
5740 }
5741
5742 static int nl80211_dump_survey(struct sk_buff *skb,
5743 struct netlink_callback *cb)
5744 {
5745 struct survey_info survey;
5746 struct cfg80211_registered_device *dev;
5747 struct wireless_dev *wdev;
5748 int survey_idx = cb->args[2];
5749 int res;
5750
5751 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5752 if (res)
5753 return res;
5754
5755 if (!wdev->netdev) {
5756 res = -EINVAL;
5757 goto out_err;
5758 }
5759
5760 if (!dev->ops->dump_survey) {
5761 res = -EOPNOTSUPP;
5762 goto out_err;
5763 }
5764
5765 while (1) {
5766 struct ieee80211_channel *chan;
5767
5768 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5769 if (res == -ENOENT)
5770 break;
5771 if (res)
5772 goto out_err;
5773
5774 /* Survey without a channel doesn't make sense */
5775 if (!survey.channel) {
5776 res = -EINVAL;
5777 goto out;
5778 }
5779
5780 chan = ieee80211_get_channel(&dev->wiphy,
5781 survey.channel->center_freq);
5782 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5783 survey_idx++;
5784 continue;
5785 }
5786
5787 if (nl80211_send_survey(skb,
5788 NETLINK_CB(cb->skb).portid,
5789 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5790 wdev->netdev, &survey) < 0)
5791 goto out;
5792 survey_idx++;
5793 }
5794
5795 out:
5796 cb->args[2] = survey_idx;
5797 res = skb->len;
5798 out_err:
5799 nl80211_finish_wdev_dump(dev);
5800 return res;
5801 }
5802
5803 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5804 {
5805 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5806 NL80211_WPA_VERSION_2));
5807 }
5808
5809 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5810 {
5811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5812 struct net_device *dev = info->user_ptr[1];
5813 struct ieee80211_channel *chan;
5814 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5815 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5816 enum nl80211_auth_type auth_type;
5817 struct key_parse key;
5818 bool local_state_change;
5819
5820 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5821 return -EINVAL;
5822
5823 if (!info->attrs[NL80211_ATTR_MAC])
5824 return -EINVAL;
5825
5826 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5827 return -EINVAL;
5828
5829 if (!info->attrs[NL80211_ATTR_SSID])
5830 return -EINVAL;
5831
5832 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5833 return -EINVAL;
5834
5835 err = nl80211_parse_key(info, &key);
5836 if (err)
5837 return err;
5838
5839 if (key.idx >= 0) {
5840 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5841 return -EINVAL;
5842 if (!key.p.key || !key.p.key_len)
5843 return -EINVAL;
5844 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5845 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5846 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5847 key.p.key_len != WLAN_KEY_LEN_WEP104))
5848 return -EINVAL;
5849 if (key.idx > 4)
5850 return -EINVAL;
5851 } else {
5852 key.p.key_len = 0;
5853 key.p.key = NULL;
5854 }
5855
5856 if (key.idx >= 0) {
5857 int i;
5858 bool ok = false;
5859 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5860 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5861 ok = true;
5862 break;
5863 }
5864 }
5865 if (!ok)
5866 return -EINVAL;
5867 }
5868
5869 if (!rdev->ops->auth)
5870 return -EOPNOTSUPP;
5871
5872 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5873 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5874 return -EOPNOTSUPP;
5875
5876 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5877 chan = ieee80211_get_channel(&rdev->wiphy,
5878 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5879 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5880 return -EINVAL;
5881
5882 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5883 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5884
5885 if (info->attrs[NL80211_ATTR_IE]) {
5886 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5887 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5888 }
5889
5890 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5891 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5892 return -EINVAL;
5893
5894 if (auth_type == NL80211_AUTHTYPE_SAE &&
5895 !info->attrs[NL80211_ATTR_SAE_DATA])
5896 return -EINVAL;
5897
5898 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5899 if (auth_type != NL80211_AUTHTYPE_SAE)
5900 return -EINVAL;
5901 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5902 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5903 /* need to include at least Auth Transaction and Status Code */
5904 if (sae_data_len < 4)
5905 return -EINVAL;
5906 }
5907
5908 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5909
5910 /*
5911 * Since we no longer track auth state, ignore
5912 * requests to only change local state.
5913 */
5914 if (local_state_change)
5915 return 0;
5916
5917 wdev_lock(dev->ieee80211_ptr);
5918 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5919 ssid, ssid_len, ie, ie_len,
5920 key.p.key, key.p.key_len, key.idx,
5921 sae_data, sae_data_len);
5922 wdev_unlock(dev->ieee80211_ptr);
5923 return err;
5924 }
5925
5926 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5927 struct genl_info *info,
5928 struct cfg80211_crypto_settings *settings,
5929 int cipher_limit)
5930 {
5931 memset(settings, 0, sizeof(*settings));
5932
5933 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5934
5935 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5936 u16 proto;
5937 proto = nla_get_u16(
5938 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5939 settings->control_port_ethertype = cpu_to_be16(proto);
5940 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5941 proto != ETH_P_PAE)
5942 return -EINVAL;
5943 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5944 settings->control_port_no_encrypt = true;
5945 } else
5946 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5947
5948 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5949 void *data;
5950 int len, i;
5951
5952 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5953 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5954 settings->n_ciphers_pairwise = len / sizeof(u32);
5955
5956 if (len % sizeof(u32))
5957 return -EINVAL;
5958
5959 if (settings->n_ciphers_pairwise > cipher_limit)
5960 return -EINVAL;
5961
5962 memcpy(settings->ciphers_pairwise, data, len);
5963
5964 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5965 if (!cfg80211_supported_cipher_suite(
5966 &rdev->wiphy,
5967 settings->ciphers_pairwise[i]))
5968 return -EINVAL;
5969 }
5970
5971 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5972 settings->cipher_group =
5973 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5974 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5975 settings->cipher_group))
5976 return -EINVAL;
5977 }
5978
5979 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5980 settings->wpa_versions =
5981 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5982 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5983 return -EINVAL;
5984 }
5985
5986 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5987 void *data;
5988 int len;
5989
5990 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5991 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5992 settings->n_akm_suites = len / sizeof(u32);
5993
5994 if (len % sizeof(u32))
5995 return -EINVAL;
5996
5997 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5998 return -EINVAL;
5999
6000 memcpy(settings->akm_suites, data, len);
6001 }
6002
6003 return 0;
6004 }
6005
6006 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6007 {
6008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6009 struct net_device *dev = info->user_ptr[1];
6010 struct ieee80211_channel *chan;
6011 struct cfg80211_assoc_request req = {};
6012 const u8 *bssid, *ssid;
6013 int err, ssid_len = 0;
6014
6015 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6016 return -EINVAL;
6017
6018 if (!info->attrs[NL80211_ATTR_MAC] ||
6019 !info->attrs[NL80211_ATTR_SSID] ||
6020 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6021 return -EINVAL;
6022
6023 if (!rdev->ops->assoc)
6024 return -EOPNOTSUPP;
6025
6026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6028 return -EOPNOTSUPP;
6029
6030 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6031
6032 chan = ieee80211_get_channel(&rdev->wiphy,
6033 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6034 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6035 return -EINVAL;
6036
6037 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6038 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6039
6040 if (info->attrs[NL80211_ATTR_IE]) {
6041 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6042 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6043 }
6044
6045 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6046 enum nl80211_mfp mfp =
6047 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6048 if (mfp == NL80211_MFP_REQUIRED)
6049 req.use_mfp = true;
6050 else if (mfp != NL80211_MFP_NO)
6051 return -EINVAL;
6052 }
6053
6054 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6055 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6056
6057 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6058 req.flags |= ASSOC_REQ_DISABLE_HT;
6059
6060 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6061 memcpy(&req.ht_capa_mask,
6062 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6063 sizeof(req.ht_capa_mask));
6064
6065 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6066 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6067 return -EINVAL;
6068 memcpy(&req.ht_capa,
6069 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6070 sizeof(req.ht_capa));
6071 }
6072
6073 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6074 req.flags |= ASSOC_REQ_DISABLE_VHT;
6075
6076 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6077 memcpy(&req.vht_capa_mask,
6078 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6079 sizeof(req.vht_capa_mask));
6080
6081 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6082 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6083 return -EINVAL;
6084 memcpy(&req.vht_capa,
6085 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6086 sizeof(req.vht_capa));
6087 }
6088
6089 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6090 if (!err) {
6091 wdev_lock(dev->ieee80211_ptr);
6092 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6093 ssid, ssid_len, &req);
6094 wdev_unlock(dev->ieee80211_ptr);
6095 }
6096
6097 return err;
6098 }
6099
6100 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6101 {
6102 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6103 struct net_device *dev = info->user_ptr[1];
6104 const u8 *ie = NULL, *bssid;
6105 int ie_len = 0, err;
6106 u16 reason_code;
6107 bool local_state_change;
6108
6109 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6110 return -EINVAL;
6111
6112 if (!info->attrs[NL80211_ATTR_MAC])
6113 return -EINVAL;
6114
6115 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6116 return -EINVAL;
6117
6118 if (!rdev->ops->deauth)
6119 return -EOPNOTSUPP;
6120
6121 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6122 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6123 return -EOPNOTSUPP;
6124
6125 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6126
6127 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6128 if (reason_code == 0) {
6129 /* Reason Code 0 is reserved */
6130 return -EINVAL;
6131 }
6132
6133 if (info->attrs[NL80211_ATTR_IE]) {
6134 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6135 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6136 }
6137
6138 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6139
6140 wdev_lock(dev->ieee80211_ptr);
6141 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6142 local_state_change);
6143 wdev_unlock(dev->ieee80211_ptr);
6144 return err;
6145 }
6146
6147 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6148 {
6149 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6150 struct net_device *dev = info->user_ptr[1];
6151 const u8 *ie = NULL, *bssid;
6152 int ie_len = 0, err;
6153 u16 reason_code;
6154 bool local_state_change;
6155
6156 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6157 return -EINVAL;
6158
6159 if (!info->attrs[NL80211_ATTR_MAC])
6160 return -EINVAL;
6161
6162 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6163 return -EINVAL;
6164
6165 if (!rdev->ops->disassoc)
6166 return -EOPNOTSUPP;
6167
6168 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6169 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6170 return -EOPNOTSUPP;
6171
6172 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6173
6174 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6175 if (reason_code == 0) {
6176 /* Reason Code 0 is reserved */
6177 return -EINVAL;
6178 }
6179
6180 if (info->attrs[NL80211_ATTR_IE]) {
6181 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6182 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6183 }
6184
6185 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6186
6187 wdev_lock(dev->ieee80211_ptr);
6188 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6189 local_state_change);
6190 wdev_unlock(dev->ieee80211_ptr);
6191 return err;
6192 }
6193
6194 static bool
6195 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6196 int mcast_rate[IEEE80211_NUM_BANDS],
6197 int rateval)
6198 {
6199 struct wiphy *wiphy = &rdev->wiphy;
6200 bool found = false;
6201 int band, i;
6202
6203 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6204 struct ieee80211_supported_band *sband;
6205
6206 sband = wiphy->bands[band];
6207 if (!sband)
6208 continue;
6209
6210 for (i = 0; i < sband->n_bitrates; i++) {
6211 if (sband->bitrates[i].bitrate == rateval) {
6212 mcast_rate[band] = i + 1;
6213 found = true;
6214 break;
6215 }
6216 }
6217 }
6218
6219 return found;
6220 }
6221
6222 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6223 {
6224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6225 struct net_device *dev = info->user_ptr[1];
6226 struct cfg80211_ibss_params ibss;
6227 struct wiphy *wiphy;
6228 struct cfg80211_cached_keys *connkeys = NULL;
6229 int err;
6230
6231 memset(&ibss, 0, sizeof(ibss));
6232
6233 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6234 return -EINVAL;
6235
6236 if (!info->attrs[NL80211_ATTR_SSID] ||
6237 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6238 return -EINVAL;
6239
6240 ibss.beacon_interval = 100;
6241
6242 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6243 ibss.beacon_interval =
6244 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6245 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6246 return -EINVAL;
6247 }
6248
6249 if (!rdev->ops->join_ibss)
6250 return -EOPNOTSUPP;
6251
6252 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6253 return -EOPNOTSUPP;
6254
6255 wiphy = &rdev->wiphy;
6256
6257 if (info->attrs[NL80211_ATTR_MAC]) {
6258 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6259
6260 if (!is_valid_ether_addr(ibss.bssid))
6261 return -EINVAL;
6262 }
6263 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6264 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6265
6266 if (info->attrs[NL80211_ATTR_IE]) {
6267 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6268 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6269 }
6270
6271 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6272 if (err)
6273 return err;
6274
6275 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6276 return -EINVAL;
6277
6278 if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6279 return -EINVAL;
6280 if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6281 !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6282 return -EINVAL;
6283
6284 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6285 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6286
6287 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6288 u8 *rates =
6289 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6290 int n_rates =
6291 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6292 struct ieee80211_supported_band *sband =
6293 wiphy->bands[ibss.chandef.chan->band];
6294
6295 err = ieee80211_get_ratemask(sband, rates, n_rates,
6296 &ibss.basic_rates);
6297 if (err)
6298 return err;
6299 }
6300
6301 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6302 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6303 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6304 return -EINVAL;
6305
6306 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6307 bool no_ht = false;
6308
6309 connkeys = nl80211_parse_connkeys(rdev,
6310 info->attrs[NL80211_ATTR_KEYS],
6311 &no_ht);
6312 if (IS_ERR(connkeys))
6313 return PTR_ERR(connkeys);
6314
6315 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6316 no_ht) {
6317 kfree(connkeys);
6318 return -EINVAL;
6319 }
6320 }
6321
6322 ibss.control_port =
6323 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6324
6325 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6326 if (err)
6327 kfree(connkeys);
6328 return err;
6329 }
6330
6331 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6332 {
6333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6334 struct net_device *dev = info->user_ptr[1];
6335
6336 if (!rdev->ops->leave_ibss)
6337 return -EOPNOTSUPP;
6338
6339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6340 return -EOPNOTSUPP;
6341
6342 return cfg80211_leave_ibss(rdev, dev, false);
6343 }
6344
6345 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6346 {
6347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6348 struct net_device *dev = info->user_ptr[1];
6349 int mcast_rate[IEEE80211_NUM_BANDS];
6350 u32 nla_rate;
6351 int err;
6352
6353 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6354 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6355 return -EOPNOTSUPP;
6356
6357 if (!rdev->ops->set_mcast_rate)
6358 return -EOPNOTSUPP;
6359
6360 memset(mcast_rate, 0, sizeof(mcast_rate));
6361
6362 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6363 return -EINVAL;
6364
6365 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6366 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6367 return -EINVAL;
6368
6369 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6370
6371 return err;
6372 }
6373
6374
6375 #ifdef CONFIG_NL80211_TESTMODE
6376 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6377 .name = "testmode",
6378 };
6379
6380 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6381 {
6382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6383 int err;
6384
6385 if (!info->attrs[NL80211_ATTR_TESTDATA])
6386 return -EINVAL;
6387
6388 err = -EOPNOTSUPP;
6389 if (rdev->ops->testmode_cmd) {
6390 rdev->testmode_info = info;
6391 err = rdev_testmode_cmd(rdev,
6392 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6393 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6394 rdev->testmode_info = NULL;
6395 }
6396
6397 return err;
6398 }
6399
6400 static int nl80211_testmode_dump(struct sk_buff *skb,
6401 struct netlink_callback *cb)
6402 {
6403 struct cfg80211_registered_device *rdev;
6404 int err;
6405 long phy_idx;
6406 void *data = NULL;
6407 int data_len = 0;
6408
6409 rtnl_lock();
6410
6411 if (cb->args[0]) {
6412 /*
6413 * 0 is a valid index, but not valid for args[0],
6414 * so we need to offset by 1.
6415 */
6416 phy_idx = cb->args[0] - 1;
6417 } else {
6418 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6419 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6420 nl80211_policy);
6421 if (err)
6422 goto out_err;
6423
6424 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6425 nl80211_fam.attrbuf);
6426 if (IS_ERR(rdev)) {
6427 err = PTR_ERR(rdev);
6428 goto out_err;
6429 }
6430 phy_idx = rdev->wiphy_idx;
6431 rdev = NULL;
6432
6433 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6434 cb->args[1] =
6435 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6436 }
6437
6438 if (cb->args[1]) {
6439 data = nla_data((void *)cb->args[1]);
6440 data_len = nla_len((void *)cb->args[1]);
6441 }
6442
6443 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6444 if (!rdev) {
6445 err = -ENOENT;
6446 goto out_err;
6447 }
6448
6449 if (!rdev->ops->testmode_dump) {
6450 err = -EOPNOTSUPP;
6451 goto out_err;
6452 }
6453
6454 while (1) {
6455 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6456 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6457 NL80211_CMD_TESTMODE);
6458 struct nlattr *tmdata;
6459
6460 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6461 genlmsg_cancel(skb, hdr);
6462 break;
6463 }
6464
6465 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6466 if (!tmdata) {
6467 genlmsg_cancel(skb, hdr);
6468 break;
6469 }
6470 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6471 nla_nest_end(skb, tmdata);
6472
6473 if (err == -ENOBUFS || err == -ENOENT) {
6474 genlmsg_cancel(skb, hdr);
6475 break;
6476 } else if (err) {
6477 genlmsg_cancel(skb, hdr);
6478 goto out_err;
6479 }
6480
6481 genlmsg_end(skb, hdr);
6482 }
6483
6484 err = skb->len;
6485 /* see above */
6486 cb->args[0] = phy_idx + 1;
6487 out_err:
6488 rtnl_unlock();
6489 return err;
6490 }
6491
6492 static struct sk_buff *
6493 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6494 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6495 {
6496 struct sk_buff *skb;
6497 void *hdr;
6498 struct nlattr *data;
6499
6500 skb = nlmsg_new(approxlen + 100, gfp);
6501 if (!skb)
6502 return NULL;
6503
6504 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6505 if (!hdr) {
6506 kfree_skb(skb);
6507 return NULL;
6508 }
6509
6510 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6511 goto nla_put_failure;
6512 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6513
6514 ((void **)skb->cb)[0] = rdev;
6515 ((void **)skb->cb)[1] = hdr;
6516 ((void **)skb->cb)[2] = data;
6517
6518 return skb;
6519
6520 nla_put_failure:
6521 kfree_skb(skb);
6522 return NULL;
6523 }
6524
6525 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6526 int approxlen)
6527 {
6528 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6529
6530 if (WARN_ON(!rdev->testmode_info))
6531 return NULL;
6532
6533 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6534 rdev->testmode_info->snd_portid,
6535 rdev->testmode_info->snd_seq,
6536 GFP_KERNEL);
6537 }
6538 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6539
6540 int cfg80211_testmode_reply(struct sk_buff *skb)
6541 {
6542 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6543 void *hdr = ((void **)skb->cb)[1];
6544 struct nlattr *data = ((void **)skb->cb)[2];
6545
6546 if (WARN_ON(!rdev->testmode_info)) {
6547 kfree_skb(skb);
6548 return -EINVAL;
6549 }
6550
6551 nla_nest_end(skb, data);
6552 genlmsg_end(skb, hdr);
6553 return genlmsg_reply(skb, rdev->testmode_info);
6554 }
6555 EXPORT_SYMBOL(cfg80211_testmode_reply);
6556
6557 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6558 int approxlen, gfp_t gfp)
6559 {
6560 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6561
6562 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6563 }
6564 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6565
6566 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6567 {
6568 void *hdr = ((void **)skb->cb)[1];
6569 struct nlattr *data = ((void **)skb->cb)[2];
6570
6571 nla_nest_end(skb, data);
6572 genlmsg_end(skb, hdr);
6573 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6574 }
6575 EXPORT_SYMBOL(cfg80211_testmode_event);
6576 #endif
6577
6578 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6579 {
6580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6581 struct net_device *dev = info->user_ptr[1];
6582 struct cfg80211_connect_params connect;
6583 struct wiphy *wiphy;
6584 struct cfg80211_cached_keys *connkeys = NULL;
6585 int err;
6586
6587 memset(&connect, 0, sizeof(connect));
6588
6589 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6590 return -EINVAL;
6591
6592 if (!info->attrs[NL80211_ATTR_SSID] ||
6593 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6594 return -EINVAL;
6595
6596 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6597 connect.auth_type =
6598 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6599 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6600 NL80211_CMD_CONNECT))
6601 return -EINVAL;
6602 } else
6603 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6604
6605 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6606
6607 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6608 NL80211_MAX_NR_CIPHER_SUITES);
6609 if (err)
6610 return err;
6611
6612 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6613 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6614 return -EOPNOTSUPP;
6615
6616 wiphy = &rdev->wiphy;
6617
6618 connect.bg_scan_period = -1;
6619 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6620 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6621 connect.bg_scan_period =
6622 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6623 }
6624
6625 if (info->attrs[NL80211_ATTR_MAC])
6626 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6627 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6628 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6629
6630 if (info->attrs[NL80211_ATTR_IE]) {
6631 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6632 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6633 }
6634
6635 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6636 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6637 if (connect.mfp != NL80211_MFP_REQUIRED &&
6638 connect.mfp != NL80211_MFP_NO)
6639 return -EINVAL;
6640 } else {
6641 connect.mfp = NL80211_MFP_NO;
6642 }
6643
6644 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6645 connect.channel =
6646 ieee80211_get_channel(wiphy,
6647 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6648 if (!connect.channel ||
6649 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6650 return -EINVAL;
6651 }
6652
6653 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6654 connkeys = nl80211_parse_connkeys(rdev,
6655 info->attrs[NL80211_ATTR_KEYS], NULL);
6656 if (IS_ERR(connkeys))
6657 return PTR_ERR(connkeys);
6658 }
6659
6660 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6661 connect.flags |= ASSOC_REQ_DISABLE_HT;
6662
6663 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6664 memcpy(&connect.ht_capa_mask,
6665 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6666 sizeof(connect.ht_capa_mask));
6667
6668 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6669 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6670 kfree(connkeys);
6671 return -EINVAL;
6672 }
6673 memcpy(&connect.ht_capa,
6674 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6675 sizeof(connect.ht_capa));
6676 }
6677
6678 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6679 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6680
6681 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6682 memcpy(&connect.vht_capa_mask,
6683 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6684 sizeof(connect.vht_capa_mask));
6685
6686 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6687 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6688 kfree(connkeys);
6689 return -EINVAL;
6690 }
6691 memcpy(&connect.vht_capa,
6692 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6693 sizeof(connect.vht_capa));
6694 }
6695
6696 wdev_lock(dev->ieee80211_ptr);
6697 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6698 wdev_unlock(dev->ieee80211_ptr);
6699 if (err)
6700 kfree(connkeys);
6701 return err;
6702 }
6703
6704 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6705 {
6706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6707 struct net_device *dev = info->user_ptr[1];
6708 u16 reason;
6709 int ret;
6710
6711 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6712 reason = WLAN_REASON_DEAUTH_LEAVING;
6713 else
6714 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6715
6716 if (reason == 0)
6717 return -EINVAL;
6718
6719 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6720 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6721 return -EOPNOTSUPP;
6722
6723 wdev_lock(dev->ieee80211_ptr);
6724 ret = cfg80211_disconnect(rdev, dev, reason, true);
6725 wdev_unlock(dev->ieee80211_ptr);
6726 return ret;
6727 }
6728
6729 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6730 {
6731 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6732 struct net *net;
6733 int err;
6734 u32 pid;
6735
6736 if (!info->attrs[NL80211_ATTR_PID])
6737 return -EINVAL;
6738
6739 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6740
6741 net = get_net_ns_by_pid(pid);
6742 if (IS_ERR(net))
6743 return PTR_ERR(net);
6744
6745 err = 0;
6746
6747 /* check if anything to do */
6748 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6749 err = cfg80211_switch_netns(rdev, net);
6750
6751 put_net(net);
6752 return err;
6753 }
6754
6755 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6756 {
6757 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6758 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6759 struct cfg80211_pmksa *pmksa) = NULL;
6760 struct net_device *dev = info->user_ptr[1];
6761 struct cfg80211_pmksa pmksa;
6762
6763 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6764
6765 if (!info->attrs[NL80211_ATTR_MAC])
6766 return -EINVAL;
6767
6768 if (!info->attrs[NL80211_ATTR_PMKID])
6769 return -EINVAL;
6770
6771 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6772 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6773
6774 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6775 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6776 return -EOPNOTSUPP;
6777
6778 switch (info->genlhdr->cmd) {
6779 case NL80211_CMD_SET_PMKSA:
6780 rdev_ops = rdev->ops->set_pmksa;
6781 break;
6782 case NL80211_CMD_DEL_PMKSA:
6783 rdev_ops = rdev->ops->del_pmksa;
6784 break;
6785 default:
6786 WARN_ON(1);
6787 break;
6788 }
6789
6790 if (!rdev_ops)
6791 return -EOPNOTSUPP;
6792
6793 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6794 }
6795
6796 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6797 {
6798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6799 struct net_device *dev = info->user_ptr[1];
6800
6801 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6802 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6803 return -EOPNOTSUPP;
6804
6805 if (!rdev->ops->flush_pmksa)
6806 return -EOPNOTSUPP;
6807
6808 return rdev_flush_pmksa(rdev, dev);
6809 }
6810
6811 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6812 {
6813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6814 struct net_device *dev = info->user_ptr[1];
6815 u8 action_code, dialog_token;
6816 u16 status_code;
6817 u8 *peer;
6818
6819 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6820 !rdev->ops->tdls_mgmt)
6821 return -EOPNOTSUPP;
6822
6823 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6824 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6825 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6826 !info->attrs[NL80211_ATTR_IE] ||
6827 !info->attrs[NL80211_ATTR_MAC])
6828 return -EINVAL;
6829
6830 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6831 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6832 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6833 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6834
6835 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6836 dialog_token, status_code,
6837 nla_data(info->attrs[NL80211_ATTR_IE]),
6838 nla_len(info->attrs[NL80211_ATTR_IE]));
6839 }
6840
6841 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6842 {
6843 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6844 struct net_device *dev = info->user_ptr[1];
6845 enum nl80211_tdls_operation operation;
6846 u8 *peer;
6847
6848 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6849 !rdev->ops->tdls_oper)
6850 return -EOPNOTSUPP;
6851
6852 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6853 !info->attrs[NL80211_ATTR_MAC])
6854 return -EINVAL;
6855
6856 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6857 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6858
6859 return rdev_tdls_oper(rdev, dev, peer, operation);
6860 }
6861
6862 static int nl80211_remain_on_channel(struct sk_buff *skb,
6863 struct genl_info *info)
6864 {
6865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6866 struct wireless_dev *wdev = info->user_ptr[1];
6867 struct cfg80211_chan_def chandef;
6868 struct sk_buff *msg;
6869 void *hdr;
6870 u64 cookie;
6871 u32 duration;
6872 int err;
6873
6874 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6875 !info->attrs[NL80211_ATTR_DURATION])
6876 return -EINVAL;
6877
6878 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6879
6880 if (!rdev->ops->remain_on_channel ||
6881 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6882 return -EOPNOTSUPP;
6883
6884 /*
6885 * We should be on that channel for at least a minimum amount of
6886 * time (10ms) but no longer than the driver supports.
6887 */
6888 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6889 duration > rdev->wiphy.max_remain_on_channel_duration)
6890 return -EINVAL;
6891
6892 err = nl80211_parse_chandef(rdev, info, &chandef);
6893 if (err)
6894 return err;
6895
6896 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6897 if (!msg)
6898 return -ENOMEM;
6899
6900 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6901 NL80211_CMD_REMAIN_ON_CHANNEL);
6902
6903 if (IS_ERR(hdr)) {
6904 err = PTR_ERR(hdr);
6905 goto free_msg;
6906 }
6907
6908 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6909 duration, &cookie);
6910
6911 if (err)
6912 goto free_msg;
6913
6914 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6915 goto nla_put_failure;
6916
6917 genlmsg_end(msg, hdr);
6918
6919 return genlmsg_reply(msg, info);
6920
6921 nla_put_failure:
6922 err = -ENOBUFS;
6923 free_msg:
6924 nlmsg_free(msg);
6925 return err;
6926 }
6927
6928 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6929 struct genl_info *info)
6930 {
6931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6932 struct wireless_dev *wdev = info->user_ptr[1];
6933 u64 cookie;
6934
6935 if (!info->attrs[NL80211_ATTR_COOKIE])
6936 return -EINVAL;
6937
6938 if (!rdev->ops->cancel_remain_on_channel)
6939 return -EOPNOTSUPP;
6940
6941 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6942
6943 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6944 }
6945
6946 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6947 u8 *rates, u8 rates_len)
6948 {
6949 u8 i;
6950 u32 mask = 0;
6951
6952 for (i = 0; i < rates_len; i++) {
6953 int rate = (rates[i] & 0x7f) * 5;
6954 int ridx;
6955 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6956 struct ieee80211_rate *srate =
6957 &sband->bitrates[ridx];
6958 if (rate == srate->bitrate) {
6959 mask |= 1 << ridx;
6960 break;
6961 }
6962 }
6963 if (ridx == sband->n_bitrates)
6964 return 0; /* rate not found */
6965 }
6966
6967 return mask;
6968 }
6969
6970 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6971 u8 *rates, u8 rates_len,
6972 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6973 {
6974 u8 i;
6975
6976 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6977
6978 for (i = 0; i < rates_len; i++) {
6979 int ridx, rbit;
6980
6981 ridx = rates[i] / 8;
6982 rbit = BIT(rates[i] % 8);
6983
6984 /* check validity */
6985 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6986 return false;
6987
6988 /* check availability */
6989 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6990 mcs[ridx] |= rbit;
6991 else
6992 return false;
6993 }
6994
6995 return true;
6996 }
6997
6998 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6999 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7000 .len = NL80211_MAX_SUPP_RATES },
7001 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7002 .len = NL80211_MAX_SUPP_HT_RATES },
7003 };
7004
7005 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7006 struct genl_info *info)
7007 {
7008 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7010 struct cfg80211_bitrate_mask mask;
7011 int rem, i;
7012 struct net_device *dev = info->user_ptr[1];
7013 struct nlattr *tx_rates;
7014 struct ieee80211_supported_band *sband;
7015
7016 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7017 return -EINVAL;
7018
7019 if (!rdev->ops->set_bitrate_mask)
7020 return -EOPNOTSUPP;
7021
7022 memset(&mask, 0, sizeof(mask));
7023 /* Default to all rates enabled */
7024 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7025 sband = rdev->wiphy.bands[i];
7026 mask.control[i].legacy =
7027 sband ? (1 << sband->n_bitrates) - 1 : 0;
7028 if (sband)
7029 memcpy(mask.control[i].mcs,
7030 sband->ht_cap.mcs.rx_mask,
7031 sizeof(mask.control[i].mcs));
7032 else
7033 memset(mask.control[i].mcs, 0,
7034 sizeof(mask.control[i].mcs));
7035 }
7036
7037 /*
7038 * The nested attribute uses enum nl80211_band as the index. This maps
7039 * directly to the enum ieee80211_band values used in cfg80211.
7040 */
7041 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7042 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7043 {
7044 enum ieee80211_band band = nla_type(tx_rates);
7045 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7046 return -EINVAL;
7047 sband = rdev->wiphy.bands[band];
7048 if (sband == NULL)
7049 return -EINVAL;
7050 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7051 nla_len(tx_rates), nl80211_txattr_policy);
7052 if (tb[NL80211_TXRATE_LEGACY]) {
7053 mask.control[band].legacy = rateset_to_mask(
7054 sband,
7055 nla_data(tb[NL80211_TXRATE_LEGACY]),
7056 nla_len(tb[NL80211_TXRATE_LEGACY]));
7057 if ((mask.control[band].legacy == 0) &&
7058 nla_len(tb[NL80211_TXRATE_LEGACY]))
7059 return -EINVAL;
7060 }
7061 if (tb[NL80211_TXRATE_MCS]) {
7062 if (!ht_rateset_to_mask(
7063 sband,
7064 nla_data(tb[NL80211_TXRATE_MCS]),
7065 nla_len(tb[NL80211_TXRATE_MCS]),
7066 mask.control[band].mcs))
7067 return -EINVAL;
7068 }
7069
7070 if (mask.control[band].legacy == 0) {
7071 /* don't allow empty legacy rates if HT
7072 * is not even supported. */
7073 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7074 return -EINVAL;
7075
7076 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7077 if (mask.control[band].mcs[i])
7078 break;
7079
7080 /* legacy and mcs rates may not be both empty */
7081 if (i == IEEE80211_HT_MCS_MASK_LEN)
7082 return -EINVAL;
7083 }
7084 }
7085
7086 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7087 }
7088
7089 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7090 {
7091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7092 struct wireless_dev *wdev = info->user_ptr[1];
7093 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7094
7095 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7096 return -EINVAL;
7097
7098 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7099 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7100
7101 switch (wdev->iftype) {
7102 case NL80211_IFTYPE_STATION:
7103 case NL80211_IFTYPE_ADHOC:
7104 case NL80211_IFTYPE_P2P_CLIENT:
7105 case NL80211_IFTYPE_AP:
7106 case NL80211_IFTYPE_AP_VLAN:
7107 case NL80211_IFTYPE_MESH_POINT:
7108 case NL80211_IFTYPE_P2P_GO:
7109 case NL80211_IFTYPE_P2P_DEVICE:
7110 break;
7111 default:
7112 return -EOPNOTSUPP;
7113 }
7114
7115 /* not much point in registering if we can't reply */
7116 if (!rdev->ops->mgmt_tx)
7117 return -EOPNOTSUPP;
7118
7119 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7120 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7121 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7122 }
7123
7124 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7125 {
7126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7127 struct wireless_dev *wdev = info->user_ptr[1];
7128 struct cfg80211_chan_def chandef;
7129 int err;
7130 void *hdr = NULL;
7131 u64 cookie;
7132 struct sk_buff *msg = NULL;
7133 unsigned int wait = 0;
7134 bool offchan, no_cck, dont_wait_for_ack;
7135
7136 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7137
7138 if (!info->attrs[NL80211_ATTR_FRAME])
7139 return -EINVAL;
7140
7141 if (!rdev->ops->mgmt_tx)
7142 return -EOPNOTSUPP;
7143
7144 switch (wdev->iftype) {
7145 case NL80211_IFTYPE_STATION:
7146 case NL80211_IFTYPE_ADHOC:
7147 case NL80211_IFTYPE_P2P_CLIENT:
7148 case NL80211_IFTYPE_AP:
7149 case NL80211_IFTYPE_AP_VLAN:
7150 case NL80211_IFTYPE_MESH_POINT:
7151 case NL80211_IFTYPE_P2P_GO:
7152 case NL80211_IFTYPE_P2P_DEVICE:
7153 break;
7154 default:
7155 return -EOPNOTSUPP;
7156 }
7157
7158 if (info->attrs[NL80211_ATTR_DURATION]) {
7159 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7160 return -EINVAL;
7161 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7162
7163 /*
7164 * We should wait on the channel for at least a minimum amount
7165 * of time (10ms) but no longer than the driver supports.
7166 */
7167 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7168 wait > rdev->wiphy.max_remain_on_channel_duration)
7169 return -EINVAL;
7170
7171 }
7172
7173 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7174
7175 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7176 return -EINVAL;
7177
7178 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7179
7180 err = nl80211_parse_chandef(rdev, info, &chandef);
7181 if (err)
7182 return err;
7183
7184 if (!dont_wait_for_ack) {
7185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7186 if (!msg)
7187 return -ENOMEM;
7188
7189 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7190 NL80211_CMD_FRAME);
7191
7192 if (IS_ERR(hdr)) {
7193 err = PTR_ERR(hdr);
7194 goto free_msg;
7195 }
7196 }
7197
7198 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7199 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7200 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7201 no_cck, dont_wait_for_ack, &cookie);
7202 if (err)
7203 goto free_msg;
7204
7205 if (msg) {
7206 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7207 goto nla_put_failure;
7208
7209 genlmsg_end(msg, hdr);
7210 return genlmsg_reply(msg, info);
7211 }
7212
7213 return 0;
7214
7215 nla_put_failure:
7216 err = -ENOBUFS;
7217 free_msg:
7218 nlmsg_free(msg);
7219 return err;
7220 }
7221
7222 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7223 {
7224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7225 struct wireless_dev *wdev = info->user_ptr[1];
7226 u64 cookie;
7227
7228 if (!info->attrs[NL80211_ATTR_COOKIE])
7229 return -EINVAL;
7230
7231 if (!rdev->ops->mgmt_tx_cancel_wait)
7232 return -EOPNOTSUPP;
7233
7234 switch (wdev->iftype) {
7235 case NL80211_IFTYPE_STATION:
7236 case NL80211_IFTYPE_ADHOC:
7237 case NL80211_IFTYPE_P2P_CLIENT:
7238 case NL80211_IFTYPE_AP:
7239 case NL80211_IFTYPE_AP_VLAN:
7240 case NL80211_IFTYPE_P2P_GO:
7241 case NL80211_IFTYPE_P2P_DEVICE:
7242 break;
7243 default:
7244 return -EOPNOTSUPP;
7245 }
7246
7247 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7248
7249 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7250 }
7251
7252 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7253 {
7254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7255 struct wireless_dev *wdev;
7256 struct net_device *dev = info->user_ptr[1];
7257 u8 ps_state;
7258 bool state;
7259 int err;
7260
7261 if (!info->attrs[NL80211_ATTR_PS_STATE])
7262 return -EINVAL;
7263
7264 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7265
7266 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7267 return -EINVAL;
7268
7269 wdev = dev->ieee80211_ptr;
7270
7271 if (!rdev->ops->set_power_mgmt)
7272 return -EOPNOTSUPP;
7273
7274 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7275
7276 if (state == wdev->ps)
7277 return 0;
7278
7279 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7280 if (!err)
7281 wdev->ps = state;
7282 return err;
7283 }
7284
7285 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7286 {
7287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7288 enum nl80211_ps_state ps_state;
7289 struct wireless_dev *wdev;
7290 struct net_device *dev = info->user_ptr[1];
7291 struct sk_buff *msg;
7292 void *hdr;
7293 int err;
7294
7295 wdev = dev->ieee80211_ptr;
7296
7297 if (!rdev->ops->set_power_mgmt)
7298 return -EOPNOTSUPP;
7299
7300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7301 if (!msg)
7302 return -ENOMEM;
7303
7304 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7305 NL80211_CMD_GET_POWER_SAVE);
7306 if (!hdr) {
7307 err = -ENOBUFS;
7308 goto free_msg;
7309 }
7310
7311 if (wdev->ps)
7312 ps_state = NL80211_PS_ENABLED;
7313 else
7314 ps_state = NL80211_PS_DISABLED;
7315
7316 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7317 goto nla_put_failure;
7318
7319 genlmsg_end(msg, hdr);
7320 return genlmsg_reply(msg, info);
7321
7322 nla_put_failure:
7323 err = -ENOBUFS;
7324 free_msg:
7325 nlmsg_free(msg);
7326 return err;
7327 }
7328
7329 static struct nla_policy
7330 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7331 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7332 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7333 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7334 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7335 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7336 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7337 };
7338
7339 static int nl80211_set_cqm_txe(struct genl_info *info,
7340 u32 rate, u32 pkts, u32 intvl)
7341 {
7342 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7343 struct wireless_dev *wdev;
7344 struct net_device *dev = info->user_ptr[1];
7345
7346 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7347 return -EINVAL;
7348
7349 wdev = dev->ieee80211_ptr;
7350
7351 if (!rdev->ops->set_cqm_txe_config)
7352 return -EOPNOTSUPP;
7353
7354 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7355 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7356 return -EOPNOTSUPP;
7357
7358 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7359 }
7360
7361 static int nl80211_set_cqm_rssi(struct genl_info *info,
7362 s32 threshold, u32 hysteresis)
7363 {
7364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7365 struct wireless_dev *wdev;
7366 struct net_device *dev = info->user_ptr[1];
7367
7368 if (threshold > 0)
7369 return -EINVAL;
7370
7371 wdev = dev->ieee80211_ptr;
7372
7373 if (!rdev->ops->set_cqm_rssi_config)
7374 return -EOPNOTSUPP;
7375
7376 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7377 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7378 return -EOPNOTSUPP;
7379
7380 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7381 }
7382
7383 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7384 {
7385 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7386 struct nlattr *cqm;
7387 int err;
7388
7389 cqm = info->attrs[NL80211_ATTR_CQM];
7390 if (!cqm) {
7391 err = -EINVAL;
7392 goto out;
7393 }
7394
7395 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7396 nl80211_attr_cqm_policy);
7397 if (err)
7398 goto out;
7399
7400 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7401 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7402 s32 threshold;
7403 u32 hysteresis;
7404 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7405 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7406 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7407 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7408 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7409 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7410 u32 rate, pkts, intvl;
7411 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7412 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7413 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7414 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7415 } else
7416 err = -EINVAL;
7417
7418 out:
7419 return err;
7420 }
7421
7422 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7423 {
7424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7425 struct net_device *dev = info->user_ptr[1];
7426 struct mesh_config cfg;
7427 struct mesh_setup setup;
7428 int err;
7429
7430 /* start with default */
7431 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7432 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7433
7434 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7435 /* and parse parameters if given */
7436 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7437 if (err)
7438 return err;
7439 }
7440
7441 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7442 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7443 return -EINVAL;
7444
7445 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7446 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7447
7448 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7449 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7450 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7451 return -EINVAL;
7452
7453 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7454 setup.beacon_interval =
7455 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7456 if (setup.beacon_interval < 10 ||
7457 setup.beacon_interval > 10000)
7458 return -EINVAL;
7459 }
7460
7461 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7462 setup.dtim_period =
7463 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7464 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7465 return -EINVAL;
7466 }
7467
7468 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7469 /* parse additional setup parameters if given */
7470 err = nl80211_parse_mesh_setup(info, &setup);
7471 if (err)
7472 return err;
7473 }
7474
7475 if (setup.user_mpm)
7476 cfg.auto_open_plinks = false;
7477
7478 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7479 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7480 if (err)
7481 return err;
7482 } else {
7483 /* cfg80211_join_mesh() will sort it out */
7484 setup.chandef.chan = NULL;
7485 }
7486
7487 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7488 }
7489
7490 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7491 {
7492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493 struct net_device *dev = info->user_ptr[1];
7494
7495 return cfg80211_leave_mesh(rdev, dev);
7496 }
7497
7498 #ifdef CONFIG_PM
7499 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7500 struct cfg80211_registered_device *rdev)
7501 {
7502 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7503 struct nlattr *nl_pats, *nl_pat;
7504 int i, pat_len;
7505
7506 if (!wowlan->n_patterns)
7507 return 0;
7508
7509 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7510 if (!nl_pats)
7511 return -ENOBUFS;
7512
7513 for (i = 0; i < wowlan->n_patterns; i++) {
7514 nl_pat = nla_nest_start(msg, i + 1);
7515 if (!nl_pat)
7516 return -ENOBUFS;
7517 pat_len = wowlan->patterns[i].pattern_len;
7518 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7519 DIV_ROUND_UP(pat_len, 8),
7520 wowlan->patterns[i].mask) ||
7521 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7522 pat_len, wowlan->patterns[i].pattern) ||
7523 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7524 wowlan->patterns[i].pkt_offset))
7525 return -ENOBUFS;
7526 nla_nest_end(msg, nl_pat);
7527 }
7528 nla_nest_end(msg, nl_pats);
7529
7530 return 0;
7531 }
7532
7533 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7534 struct cfg80211_wowlan_tcp *tcp)
7535 {
7536 struct nlattr *nl_tcp;
7537
7538 if (!tcp)
7539 return 0;
7540
7541 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7542 if (!nl_tcp)
7543 return -ENOBUFS;
7544
7545 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7546 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7547 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7548 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7549 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7550 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7551 tcp->payload_len, tcp->payload) ||
7552 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7553 tcp->data_interval) ||
7554 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7555 tcp->wake_len, tcp->wake_data) ||
7556 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7557 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7558 return -ENOBUFS;
7559
7560 if (tcp->payload_seq.len &&
7561 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7562 sizeof(tcp->payload_seq), &tcp->payload_seq))
7563 return -ENOBUFS;
7564
7565 if (tcp->payload_tok.len &&
7566 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7567 sizeof(tcp->payload_tok) + tcp->tokens_size,
7568 &tcp->payload_tok))
7569 return -ENOBUFS;
7570
7571 nla_nest_end(msg, nl_tcp);
7572
7573 return 0;
7574 }
7575
7576 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7577 {
7578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7579 struct sk_buff *msg;
7580 void *hdr;
7581 u32 size = NLMSG_DEFAULT_SIZE;
7582
7583 if (!rdev->wiphy.wowlan)
7584 return -EOPNOTSUPP;
7585
7586 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7587 /* adjust size to have room for all the data */
7588 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7589 rdev->wiphy.wowlan_config->tcp->payload_len +
7590 rdev->wiphy.wowlan_config->tcp->wake_len +
7591 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7592 }
7593
7594 msg = nlmsg_new(size, GFP_KERNEL);
7595 if (!msg)
7596 return -ENOMEM;
7597
7598 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7599 NL80211_CMD_GET_WOWLAN);
7600 if (!hdr)
7601 goto nla_put_failure;
7602
7603 if (rdev->wiphy.wowlan_config) {
7604 struct nlattr *nl_wowlan;
7605
7606 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7607 if (!nl_wowlan)
7608 goto nla_put_failure;
7609
7610 if ((rdev->wiphy.wowlan_config->any &&
7611 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7612 (rdev->wiphy.wowlan_config->disconnect &&
7613 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7614 (rdev->wiphy.wowlan_config->magic_pkt &&
7615 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7616 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7617 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7618 (rdev->wiphy.wowlan_config->eap_identity_req &&
7619 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7620 (rdev->wiphy.wowlan_config->four_way_handshake &&
7621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7622 (rdev->wiphy.wowlan_config->rfkill_release &&
7623 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7624 goto nla_put_failure;
7625
7626 if (nl80211_send_wowlan_patterns(msg, rdev))
7627 goto nla_put_failure;
7628
7629 if (nl80211_send_wowlan_tcp(msg,
7630 rdev->wiphy.wowlan_config->tcp))
7631 goto nla_put_failure;
7632
7633 nla_nest_end(msg, nl_wowlan);
7634 }
7635
7636 genlmsg_end(msg, hdr);
7637 return genlmsg_reply(msg, info);
7638
7639 nla_put_failure:
7640 nlmsg_free(msg);
7641 return -ENOBUFS;
7642 }
7643
7644 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7645 struct nlattr *attr,
7646 struct cfg80211_wowlan *trig)
7647 {
7648 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7649 struct cfg80211_wowlan_tcp *cfg;
7650 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7651 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7652 u32 size;
7653 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7654 int err, port;
7655
7656 if (!rdev->wiphy.wowlan->tcp)
7657 return -EINVAL;
7658
7659 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7660 nla_data(attr), nla_len(attr),
7661 nl80211_wowlan_tcp_policy);
7662 if (err)
7663 return err;
7664
7665 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7666 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7667 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7668 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7669 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7670 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7671 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7672 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7673 return -EINVAL;
7674
7675 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7676 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7677 return -EINVAL;
7678
7679 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7680 rdev->wiphy.wowlan->tcp->data_interval_max ||
7681 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7682 return -EINVAL;
7683
7684 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7685 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7686 return -EINVAL;
7687
7688 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7689 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7690 return -EINVAL;
7691
7692 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7693 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7694
7695 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7696 tokens_size = tokln - sizeof(*tok);
7697
7698 if (!tok->len || tokens_size % tok->len)
7699 return -EINVAL;
7700 if (!rdev->wiphy.wowlan->tcp->tok)
7701 return -EINVAL;
7702 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7703 return -EINVAL;
7704 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7705 return -EINVAL;
7706 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7707 return -EINVAL;
7708 if (tok->offset + tok->len > data_size)
7709 return -EINVAL;
7710 }
7711
7712 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7713 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7714 if (!rdev->wiphy.wowlan->tcp->seq)
7715 return -EINVAL;
7716 if (seq->len == 0 || seq->len > 4)
7717 return -EINVAL;
7718 if (seq->len + seq->offset > data_size)
7719 return -EINVAL;
7720 }
7721
7722 size = sizeof(*cfg);
7723 size += data_size;
7724 size += wake_size + wake_mask_size;
7725 size += tokens_size;
7726
7727 cfg = kzalloc(size, GFP_KERNEL);
7728 if (!cfg)
7729 return -ENOMEM;
7730 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7731 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7732 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7733 ETH_ALEN);
7734 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7735 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7736 else
7737 port = 0;
7738 #ifdef CONFIG_INET
7739 /* allocate a socket and port for it and use it */
7740 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7741 IPPROTO_TCP, &cfg->sock, 1);
7742 if (err) {
7743 kfree(cfg);
7744 return err;
7745 }
7746 if (inet_csk_get_port(cfg->sock->sk, port)) {
7747 sock_release(cfg->sock);
7748 kfree(cfg);
7749 return -EADDRINUSE;
7750 }
7751 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7752 #else
7753 if (!port) {
7754 kfree(cfg);
7755 return -EINVAL;
7756 }
7757 cfg->src_port = port;
7758 #endif
7759
7760 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7761 cfg->payload_len = data_size;
7762 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7763 memcpy((void *)cfg->payload,
7764 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7765 data_size);
7766 if (seq)
7767 cfg->payload_seq = *seq;
7768 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7769 cfg->wake_len = wake_size;
7770 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7771 memcpy((void *)cfg->wake_data,
7772 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7773 wake_size);
7774 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7775 data_size + wake_size;
7776 memcpy((void *)cfg->wake_mask,
7777 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7778 wake_mask_size);
7779 if (tok) {
7780 cfg->tokens_size = tokens_size;
7781 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7782 }
7783
7784 trig->tcp = cfg;
7785
7786 return 0;
7787 }
7788
7789 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7790 {
7791 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7792 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7793 struct cfg80211_wowlan new_triggers = {};
7794 struct cfg80211_wowlan *ntrig;
7795 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7796 int err, i;
7797 bool prev_enabled = rdev->wiphy.wowlan_config;
7798
7799 if (!wowlan)
7800 return -EOPNOTSUPP;
7801
7802 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7803 cfg80211_rdev_free_wowlan(rdev);
7804 rdev->wiphy.wowlan_config = NULL;
7805 goto set_wakeup;
7806 }
7807
7808 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7809 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7810 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7811 nl80211_wowlan_policy);
7812 if (err)
7813 return err;
7814
7815 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7816 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7817 return -EINVAL;
7818 new_triggers.any = true;
7819 }
7820
7821 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7822 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7823 return -EINVAL;
7824 new_triggers.disconnect = true;
7825 }
7826
7827 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7828 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7829 return -EINVAL;
7830 new_triggers.magic_pkt = true;
7831 }
7832
7833 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7834 return -EINVAL;
7835
7836 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7837 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7838 return -EINVAL;
7839 new_triggers.gtk_rekey_failure = true;
7840 }
7841
7842 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7843 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7844 return -EINVAL;
7845 new_triggers.eap_identity_req = true;
7846 }
7847
7848 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7849 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7850 return -EINVAL;
7851 new_triggers.four_way_handshake = true;
7852 }
7853
7854 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7855 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7856 return -EINVAL;
7857 new_triggers.rfkill_release = true;
7858 }
7859
7860 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7861 struct nlattr *pat;
7862 int n_patterns = 0;
7863 int rem, pat_len, mask_len, pkt_offset;
7864 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7865
7866 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7867 rem)
7868 n_patterns++;
7869 if (n_patterns > wowlan->n_patterns)
7870 return -EINVAL;
7871
7872 new_triggers.patterns = kcalloc(n_patterns,
7873 sizeof(new_triggers.patterns[0]),
7874 GFP_KERNEL);
7875 if (!new_triggers.patterns)
7876 return -ENOMEM;
7877
7878 new_triggers.n_patterns = n_patterns;
7879 i = 0;
7880
7881 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7882 rem) {
7883 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7884 nla_data(pat), nla_len(pat), NULL);
7885 err = -EINVAL;
7886 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7887 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7888 goto error;
7889 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7890 mask_len = DIV_ROUND_UP(pat_len, 8);
7891 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7892 mask_len)
7893 goto error;
7894 if (pat_len > wowlan->pattern_max_len ||
7895 pat_len < wowlan->pattern_min_len)
7896 goto error;
7897
7898 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7899 pkt_offset = 0;
7900 else
7901 pkt_offset = nla_get_u32(
7902 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7903 if (pkt_offset > wowlan->max_pkt_offset)
7904 goto error;
7905 new_triggers.patterns[i].pkt_offset = pkt_offset;
7906
7907 new_triggers.patterns[i].mask =
7908 kmalloc(mask_len + pat_len, GFP_KERNEL);
7909 if (!new_triggers.patterns[i].mask) {
7910 err = -ENOMEM;
7911 goto error;
7912 }
7913 new_triggers.patterns[i].pattern =
7914 new_triggers.patterns[i].mask + mask_len;
7915 memcpy(new_triggers.patterns[i].mask,
7916 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7917 mask_len);
7918 new_triggers.patterns[i].pattern_len = pat_len;
7919 memcpy(new_triggers.patterns[i].pattern,
7920 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7921 pat_len);
7922 i++;
7923 }
7924 }
7925
7926 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
7927 err = nl80211_parse_wowlan_tcp(
7928 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
7929 &new_triggers);
7930 if (err)
7931 goto error;
7932 }
7933
7934 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
7935 if (!ntrig) {
7936 err = -ENOMEM;
7937 goto error;
7938 }
7939 cfg80211_rdev_free_wowlan(rdev);
7940 rdev->wiphy.wowlan_config = ntrig;
7941
7942 set_wakeup:
7943 if (rdev->ops->set_wakeup &&
7944 prev_enabled != !!rdev->wiphy.wowlan_config)
7945 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
7946
7947 return 0;
7948 error:
7949 for (i = 0; i < new_triggers.n_patterns; i++)
7950 kfree(new_triggers.patterns[i].mask);
7951 kfree(new_triggers.patterns);
7952 if (new_triggers.tcp && new_triggers.tcp->sock)
7953 sock_release(new_triggers.tcp->sock);
7954 kfree(new_triggers.tcp);
7955 return err;
7956 }
7957 #endif
7958
7959 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
7960 {
7961 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7962 struct net_device *dev = info->user_ptr[1];
7963 struct wireless_dev *wdev = dev->ieee80211_ptr;
7964 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
7965 struct cfg80211_gtk_rekey_data rekey_data;
7966 int err;
7967
7968 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
7969 return -EINVAL;
7970
7971 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
7972 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
7973 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
7974 nl80211_rekey_policy);
7975 if (err)
7976 return err;
7977
7978 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
7979 return -ERANGE;
7980 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
7981 return -ERANGE;
7982 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
7983 return -ERANGE;
7984
7985 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
7986 NL80211_KEK_LEN);
7987 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
7988 NL80211_KCK_LEN);
7989 memcpy(rekey_data.replay_ctr,
7990 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
7991 NL80211_REPLAY_CTR_LEN);
7992
7993 wdev_lock(wdev);
7994 if (!wdev->current_bss) {
7995 err = -ENOTCONN;
7996 goto out;
7997 }
7998
7999 if (!rdev->ops->set_rekey_data) {
8000 err = -EOPNOTSUPP;
8001 goto out;
8002 }
8003
8004 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8005 out:
8006 wdev_unlock(wdev);
8007 return err;
8008 }
8009
8010 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8011 struct genl_info *info)
8012 {
8013 struct net_device *dev = info->user_ptr[1];
8014 struct wireless_dev *wdev = dev->ieee80211_ptr;
8015
8016 if (wdev->iftype != NL80211_IFTYPE_AP &&
8017 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8018 return -EINVAL;
8019
8020 if (wdev->ap_unexpected_nlportid)
8021 return -EBUSY;
8022
8023 wdev->ap_unexpected_nlportid = info->snd_portid;
8024 return 0;
8025 }
8026
8027 static int nl80211_probe_client(struct sk_buff *skb,
8028 struct genl_info *info)
8029 {
8030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8031 struct net_device *dev = info->user_ptr[1];
8032 struct wireless_dev *wdev = dev->ieee80211_ptr;
8033 struct sk_buff *msg;
8034 void *hdr;
8035 const u8 *addr;
8036 u64 cookie;
8037 int err;
8038
8039 if (wdev->iftype != NL80211_IFTYPE_AP &&
8040 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8041 return -EOPNOTSUPP;
8042
8043 if (!info->attrs[NL80211_ATTR_MAC])
8044 return -EINVAL;
8045
8046 if (!rdev->ops->probe_client)
8047 return -EOPNOTSUPP;
8048
8049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8050 if (!msg)
8051 return -ENOMEM;
8052
8053 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8054 NL80211_CMD_PROBE_CLIENT);
8055
8056 if (IS_ERR(hdr)) {
8057 err = PTR_ERR(hdr);
8058 goto free_msg;
8059 }
8060
8061 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8062
8063 err = rdev_probe_client(rdev, dev, addr, &cookie);
8064 if (err)
8065 goto free_msg;
8066
8067 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8068 goto nla_put_failure;
8069
8070 genlmsg_end(msg, hdr);
8071
8072 return genlmsg_reply(msg, info);
8073
8074 nla_put_failure:
8075 err = -ENOBUFS;
8076 free_msg:
8077 nlmsg_free(msg);
8078 return err;
8079 }
8080
8081 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8082 {
8083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8084 struct cfg80211_beacon_registration *reg, *nreg;
8085 int rv;
8086
8087 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8088 return -EOPNOTSUPP;
8089
8090 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8091 if (!nreg)
8092 return -ENOMEM;
8093
8094 /* First, check if already registered. */
8095 spin_lock_bh(&rdev->beacon_registrations_lock);
8096 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8097 if (reg->nlportid == info->snd_portid) {
8098 rv = -EALREADY;
8099 goto out_err;
8100 }
8101 }
8102 /* Add it to the list */
8103 nreg->nlportid = info->snd_portid;
8104 list_add(&nreg->list, &rdev->beacon_registrations);
8105
8106 spin_unlock_bh(&rdev->beacon_registrations_lock);
8107
8108 return 0;
8109 out_err:
8110 spin_unlock_bh(&rdev->beacon_registrations_lock);
8111 kfree(nreg);
8112 return rv;
8113 }
8114
8115 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8116 {
8117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8118 struct wireless_dev *wdev = info->user_ptr[1];
8119 int err;
8120
8121 if (!rdev->ops->start_p2p_device)
8122 return -EOPNOTSUPP;
8123
8124 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8125 return -EOPNOTSUPP;
8126
8127 if (wdev->p2p_started)
8128 return 0;
8129
8130 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8131 if (err)
8132 return err;
8133
8134 err = rdev_start_p2p_device(rdev, wdev);
8135 if (err)
8136 return err;
8137
8138 wdev->p2p_started = true;
8139 rdev->opencount++;
8140
8141 return 0;
8142 }
8143
8144 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8145 {
8146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8147 struct wireless_dev *wdev = info->user_ptr[1];
8148
8149 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8150 return -EOPNOTSUPP;
8151
8152 if (!rdev->ops->stop_p2p_device)
8153 return -EOPNOTSUPP;
8154
8155 cfg80211_stop_p2p_device(rdev, wdev);
8156
8157 return 0;
8158 }
8159
8160 static int nl80211_get_protocol_features(struct sk_buff *skb,
8161 struct genl_info *info)
8162 {
8163 void *hdr;
8164 struct sk_buff *msg;
8165
8166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8167 if (!msg)
8168 return -ENOMEM;
8169
8170 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8171 NL80211_CMD_GET_PROTOCOL_FEATURES);
8172 if (!hdr)
8173 goto nla_put_failure;
8174
8175 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8176 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8177 goto nla_put_failure;
8178
8179 genlmsg_end(msg, hdr);
8180 return genlmsg_reply(msg, info);
8181
8182 nla_put_failure:
8183 kfree_skb(msg);
8184 return -ENOBUFS;
8185 }
8186
8187 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8188 {
8189 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8190 struct cfg80211_update_ft_ies_params ft_params;
8191 struct net_device *dev = info->user_ptr[1];
8192
8193 if (!rdev->ops->update_ft_ies)
8194 return -EOPNOTSUPP;
8195
8196 if (!info->attrs[NL80211_ATTR_MDID] ||
8197 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8198 return -EINVAL;
8199
8200 memset(&ft_params, 0, sizeof(ft_params));
8201 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8202 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8203 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8204
8205 return rdev_update_ft_ies(rdev, dev, &ft_params);
8206 }
8207
8208 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8209 struct genl_info *info)
8210 {
8211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8212 struct wireless_dev *wdev = info->user_ptr[1];
8213 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8214 u16 duration;
8215 int ret;
8216
8217 if (!rdev->ops->crit_proto_start)
8218 return -EOPNOTSUPP;
8219
8220 if (WARN_ON(!rdev->ops->crit_proto_stop))
8221 return -EINVAL;
8222
8223 if (rdev->crit_proto_nlportid)
8224 return -EBUSY;
8225
8226 /* determine protocol if provided */
8227 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8228 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8229
8230 if (proto >= NUM_NL80211_CRIT_PROTO)
8231 return -EINVAL;
8232
8233 /* timeout must be provided */
8234 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8235 return -EINVAL;
8236
8237 duration =
8238 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8239
8240 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8241 return -ERANGE;
8242
8243 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8244 if (!ret)
8245 rdev->crit_proto_nlportid = info->snd_portid;
8246
8247 return ret;
8248 }
8249
8250 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8251 struct genl_info *info)
8252 {
8253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8254 struct wireless_dev *wdev = info->user_ptr[1];
8255
8256 if (!rdev->ops->crit_proto_stop)
8257 return -EOPNOTSUPP;
8258
8259 if (rdev->crit_proto_nlportid) {
8260 rdev->crit_proto_nlportid = 0;
8261 rdev_crit_proto_stop(rdev, wdev);
8262 }
8263 return 0;
8264 }
8265
8266 #define NL80211_FLAG_NEED_WIPHY 0x01
8267 #define NL80211_FLAG_NEED_NETDEV 0x02
8268 #define NL80211_FLAG_NEED_RTNL 0x04
8269 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8270 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8271 NL80211_FLAG_CHECK_NETDEV_UP)
8272 #define NL80211_FLAG_NEED_WDEV 0x10
8273 /* If a netdev is associated, it must be UP, P2P must be started */
8274 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8275 NL80211_FLAG_CHECK_NETDEV_UP)
8276
8277 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8278 struct genl_info *info)
8279 {
8280 struct cfg80211_registered_device *rdev;
8281 struct wireless_dev *wdev;
8282 struct net_device *dev;
8283 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8284
8285 if (rtnl)
8286 rtnl_lock();
8287
8288 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8289 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8290 if (IS_ERR(rdev)) {
8291 if (rtnl)
8292 rtnl_unlock();
8293 return PTR_ERR(rdev);
8294 }
8295 info->user_ptr[0] = rdev;
8296 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8297 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8298 ASSERT_RTNL();
8299
8300 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8301 info->attrs);
8302 if (IS_ERR(wdev)) {
8303 if (rtnl)
8304 rtnl_unlock();
8305 return PTR_ERR(wdev);
8306 }
8307
8308 dev = wdev->netdev;
8309 rdev = wiphy_to_dev(wdev->wiphy);
8310
8311 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8312 if (!dev) {
8313 if (rtnl)
8314 rtnl_unlock();
8315 return -EINVAL;
8316 }
8317
8318 info->user_ptr[1] = dev;
8319 } else {
8320 info->user_ptr[1] = wdev;
8321 }
8322
8323 if (dev) {
8324 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8325 !netif_running(dev)) {
8326 if (rtnl)
8327 rtnl_unlock();
8328 return -ENETDOWN;
8329 }
8330
8331 dev_hold(dev);
8332 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8333 if (!wdev->p2p_started) {
8334 if (rtnl)
8335 rtnl_unlock();
8336 return -ENETDOWN;
8337 }
8338 }
8339
8340 info->user_ptr[0] = rdev;
8341 }
8342
8343 return 0;
8344 }
8345
8346 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8347 struct genl_info *info)
8348 {
8349 if (info->user_ptr[1]) {
8350 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8351 struct wireless_dev *wdev = info->user_ptr[1];
8352
8353 if (wdev->netdev)
8354 dev_put(wdev->netdev);
8355 } else {
8356 dev_put(info->user_ptr[1]);
8357 }
8358 }
8359 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8360 rtnl_unlock();
8361 }
8362
8363 static struct genl_ops nl80211_ops[] = {
8364 {
8365 .cmd = NL80211_CMD_GET_WIPHY,
8366 .doit = nl80211_get_wiphy,
8367 .dumpit = nl80211_dump_wiphy,
8368 .policy = nl80211_policy,
8369 /* can be retrieved by unprivileged users */
8370 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8371 NL80211_FLAG_NEED_RTNL,
8372 },
8373 {
8374 .cmd = NL80211_CMD_SET_WIPHY,
8375 .doit = nl80211_set_wiphy,
8376 .policy = nl80211_policy,
8377 .flags = GENL_ADMIN_PERM,
8378 .internal_flags = NL80211_FLAG_NEED_RTNL,
8379 },
8380 {
8381 .cmd = NL80211_CMD_GET_INTERFACE,
8382 .doit = nl80211_get_interface,
8383 .dumpit = nl80211_dump_interface,
8384 .policy = nl80211_policy,
8385 /* can be retrieved by unprivileged users */
8386 .internal_flags = NL80211_FLAG_NEED_WDEV |
8387 NL80211_FLAG_NEED_RTNL,
8388 },
8389 {
8390 .cmd = NL80211_CMD_SET_INTERFACE,
8391 .doit = nl80211_set_interface,
8392 .policy = nl80211_policy,
8393 .flags = GENL_ADMIN_PERM,
8394 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8395 NL80211_FLAG_NEED_RTNL,
8396 },
8397 {
8398 .cmd = NL80211_CMD_NEW_INTERFACE,
8399 .doit = nl80211_new_interface,
8400 .policy = nl80211_policy,
8401 .flags = GENL_ADMIN_PERM,
8402 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8403 NL80211_FLAG_NEED_RTNL,
8404 },
8405 {
8406 .cmd = NL80211_CMD_DEL_INTERFACE,
8407 .doit = nl80211_del_interface,
8408 .policy = nl80211_policy,
8409 .flags = GENL_ADMIN_PERM,
8410 .internal_flags = NL80211_FLAG_NEED_WDEV |
8411 NL80211_FLAG_NEED_RTNL,
8412 },
8413 {
8414 .cmd = NL80211_CMD_GET_KEY,
8415 .doit = nl80211_get_key,
8416 .policy = nl80211_policy,
8417 .flags = GENL_ADMIN_PERM,
8418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8419 NL80211_FLAG_NEED_RTNL,
8420 },
8421 {
8422 .cmd = NL80211_CMD_SET_KEY,
8423 .doit = nl80211_set_key,
8424 .policy = nl80211_policy,
8425 .flags = GENL_ADMIN_PERM,
8426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8427 NL80211_FLAG_NEED_RTNL,
8428 },
8429 {
8430 .cmd = NL80211_CMD_NEW_KEY,
8431 .doit = nl80211_new_key,
8432 .policy = nl80211_policy,
8433 .flags = GENL_ADMIN_PERM,
8434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8435 NL80211_FLAG_NEED_RTNL,
8436 },
8437 {
8438 .cmd = NL80211_CMD_DEL_KEY,
8439 .doit = nl80211_del_key,
8440 .policy = nl80211_policy,
8441 .flags = GENL_ADMIN_PERM,
8442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8443 NL80211_FLAG_NEED_RTNL,
8444 },
8445 {
8446 .cmd = NL80211_CMD_SET_BEACON,
8447 .policy = nl80211_policy,
8448 .flags = GENL_ADMIN_PERM,
8449 .doit = nl80211_set_beacon,
8450 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8451 NL80211_FLAG_NEED_RTNL,
8452 },
8453 {
8454 .cmd = NL80211_CMD_START_AP,
8455 .policy = nl80211_policy,
8456 .flags = GENL_ADMIN_PERM,
8457 .doit = nl80211_start_ap,
8458 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8459 NL80211_FLAG_NEED_RTNL,
8460 },
8461 {
8462 .cmd = NL80211_CMD_STOP_AP,
8463 .policy = nl80211_policy,
8464 .flags = GENL_ADMIN_PERM,
8465 .doit = nl80211_stop_ap,
8466 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8467 NL80211_FLAG_NEED_RTNL,
8468 },
8469 {
8470 .cmd = NL80211_CMD_GET_STATION,
8471 .doit = nl80211_get_station,
8472 .dumpit = nl80211_dump_station,
8473 .policy = nl80211_policy,
8474 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8475 NL80211_FLAG_NEED_RTNL,
8476 },
8477 {
8478 .cmd = NL80211_CMD_SET_STATION,
8479 .doit = nl80211_set_station,
8480 .policy = nl80211_policy,
8481 .flags = GENL_ADMIN_PERM,
8482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8483 NL80211_FLAG_NEED_RTNL,
8484 },
8485 {
8486 .cmd = NL80211_CMD_NEW_STATION,
8487 .doit = nl80211_new_station,
8488 .policy = nl80211_policy,
8489 .flags = GENL_ADMIN_PERM,
8490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8491 NL80211_FLAG_NEED_RTNL,
8492 },
8493 {
8494 .cmd = NL80211_CMD_DEL_STATION,
8495 .doit = nl80211_del_station,
8496 .policy = nl80211_policy,
8497 .flags = GENL_ADMIN_PERM,
8498 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8499 NL80211_FLAG_NEED_RTNL,
8500 },
8501 {
8502 .cmd = NL80211_CMD_GET_MPATH,
8503 .doit = nl80211_get_mpath,
8504 .dumpit = nl80211_dump_mpath,
8505 .policy = nl80211_policy,
8506 .flags = GENL_ADMIN_PERM,
8507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8508 NL80211_FLAG_NEED_RTNL,
8509 },
8510 {
8511 .cmd = NL80211_CMD_SET_MPATH,
8512 .doit = nl80211_set_mpath,
8513 .policy = nl80211_policy,
8514 .flags = GENL_ADMIN_PERM,
8515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8516 NL80211_FLAG_NEED_RTNL,
8517 },
8518 {
8519 .cmd = NL80211_CMD_NEW_MPATH,
8520 .doit = nl80211_new_mpath,
8521 .policy = nl80211_policy,
8522 .flags = GENL_ADMIN_PERM,
8523 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8524 NL80211_FLAG_NEED_RTNL,
8525 },
8526 {
8527 .cmd = NL80211_CMD_DEL_MPATH,
8528 .doit = nl80211_del_mpath,
8529 .policy = nl80211_policy,
8530 .flags = GENL_ADMIN_PERM,
8531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8532 NL80211_FLAG_NEED_RTNL,
8533 },
8534 {
8535 .cmd = NL80211_CMD_SET_BSS,
8536 .doit = nl80211_set_bss,
8537 .policy = nl80211_policy,
8538 .flags = GENL_ADMIN_PERM,
8539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8540 NL80211_FLAG_NEED_RTNL,
8541 },
8542 {
8543 .cmd = NL80211_CMD_GET_REG,
8544 .doit = nl80211_get_reg,
8545 .policy = nl80211_policy,
8546 .internal_flags = NL80211_FLAG_NEED_RTNL,
8547 /* can be retrieved by unprivileged users */
8548 },
8549 {
8550 .cmd = NL80211_CMD_SET_REG,
8551 .doit = nl80211_set_reg,
8552 .policy = nl80211_policy,
8553 .flags = GENL_ADMIN_PERM,
8554 .internal_flags = NL80211_FLAG_NEED_RTNL,
8555 },
8556 {
8557 .cmd = NL80211_CMD_REQ_SET_REG,
8558 .doit = nl80211_req_set_reg,
8559 .policy = nl80211_policy,
8560 .flags = GENL_ADMIN_PERM,
8561 },
8562 {
8563 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8564 .doit = nl80211_get_mesh_config,
8565 .policy = nl80211_policy,
8566 /* can be retrieved by unprivileged users */
8567 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8568 NL80211_FLAG_NEED_RTNL,
8569 },
8570 {
8571 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8572 .doit = nl80211_update_mesh_config,
8573 .policy = nl80211_policy,
8574 .flags = GENL_ADMIN_PERM,
8575 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8576 NL80211_FLAG_NEED_RTNL,
8577 },
8578 {
8579 .cmd = NL80211_CMD_TRIGGER_SCAN,
8580 .doit = nl80211_trigger_scan,
8581 .policy = nl80211_policy,
8582 .flags = GENL_ADMIN_PERM,
8583 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8584 NL80211_FLAG_NEED_RTNL,
8585 },
8586 {
8587 .cmd = NL80211_CMD_GET_SCAN,
8588 .policy = nl80211_policy,
8589 .dumpit = nl80211_dump_scan,
8590 },
8591 {
8592 .cmd = NL80211_CMD_START_SCHED_SCAN,
8593 .doit = nl80211_start_sched_scan,
8594 .policy = nl80211_policy,
8595 .flags = GENL_ADMIN_PERM,
8596 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8597 NL80211_FLAG_NEED_RTNL,
8598 },
8599 {
8600 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8601 .doit = nl80211_stop_sched_scan,
8602 .policy = nl80211_policy,
8603 .flags = GENL_ADMIN_PERM,
8604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8605 NL80211_FLAG_NEED_RTNL,
8606 },
8607 {
8608 .cmd = NL80211_CMD_AUTHENTICATE,
8609 .doit = nl80211_authenticate,
8610 .policy = nl80211_policy,
8611 .flags = GENL_ADMIN_PERM,
8612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8613 NL80211_FLAG_NEED_RTNL,
8614 },
8615 {
8616 .cmd = NL80211_CMD_ASSOCIATE,
8617 .doit = nl80211_associate,
8618 .policy = nl80211_policy,
8619 .flags = GENL_ADMIN_PERM,
8620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8621 NL80211_FLAG_NEED_RTNL,
8622 },
8623 {
8624 .cmd = NL80211_CMD_DEAUTHENTICATE,
8625 .doit = nl80211_deauthenticate,
8626 .policy = nl80211_policy,
8627 .flags = GENL_ADMIN_PERM,
8628 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8629 NL80211_FLAG_NEED_RTNL,
8630 },
8631 {
8632 .cmd = NL80211_CMD_DISASSOCIATE,
8633 .doit = nl80211_disassociate,
8634 .policy = nl80211_policy,
8635 .flags = GENL_ADMIN_PERM,
8636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8637 NL80211_FLAG_NEED_RTNL,
8638 },
8639 {
8640 .cmd = NL80211_CMD_JOIN_IBSS,
8641 .doit = nl80211_join_ibss,
8642 .policy = nl80211_policy,
8643 .flags = GENL_ADMIN_PERM,
8644 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8645 NL80211_FLAG_NEED_RTNL,
8646 },
8647 {
8648 .cmd = NL80211_CMD_LEAVE_IBSS,
8649 .doit = nl80211_leave_ibss,
8650 .policy = nl80211_policy,
8651 .flags = GENL_ADMIN_PERM,
8652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8653 NL80211_FLAG_NEED_RTNL,
8654 },
8655 #ifdef CONFIG_NL80211_TESTMODE
8656 {
8657 .cmd = NL80211_CMD_TESTMODE,
8658 .doit = nl80211_testmode_do,
8659 .dumpit = nl80211_testmode_dump,
8660 .policy = nl80211_policy,
8661 .flags = GENL_ADMIN_PERM,
8662 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8663 NL80211_FLAG_NEED_RTNL,
8664 },
8665 #endif
8666 {
8667 .cmd = NL80211_CMD_CONNECT,
8668 .doit = nl80211_connect,
8669 .policy = nl80211_policy,
8670 .flags = GENL_ADMIN_PERM,
8671 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8672 NL80211_FLAG_NEED_RTNL,
8673 },
8674 {
8675 .cmd = NL80211_CMD_DISCONNECT,
8676 .doit = nl80211_disconnect,
8677 .policy = nl80211_policy,
8678 .flags = GENL_ADMIN_PERM,
8679 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8680 NL80211_FLAG_NEED_RTNL,
8681 },
8682 {
8683 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8684 .doit = nl80211_wiphy_netns,
8685 .policy = nl80211_policy,
8686 .flags = GENL_ADMIN_PERM,
8687 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8688 NL80211_FLAG_NEED_RTNL,
8689 },
8690 {
8691 .cmd = NL80211_CMD_GET_SURVEY,
8692 .policy = nl80211_policy,
8693 .dumpit = nl80211_dump_survey,
8694 },
8695 {
8696 .cmd = NL80211_CMD_SET_PMKSA,
8697 .doit = nl80211_setdel_pmksa,
8698 .policy = nl80211_policy,
8699 .flags = GENL_ADMIN_PERM,
8700 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8701 NL80211_FLAG_NEED_RTNL,
8702 },
8703 {
8704 .cmd = NL80211_CMD_DEL_PMKSA,
8705 .doit = nl80211_setdel_pmksa,
8706 .policy = nl80211_policy,
8707 .flags = GENL_ADMIN_PERM,
8708 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8709 NL80211_FLAG_NEED_RTNL,
8710 },
8711 {
8712 .cmd = NL80211_CMD_FLUSH_PMKSA,
8713 .doit = nl80211_flush_pmksa,
8714 .policy = nl80211_policy,
8715 .flags = GENL_ADMIN_PERM,
8716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8717 NL80211_FLAG_NEED_RTNL,
8718 },
8719 {
8720 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8721 .doit = nl80211_remain_on_channel,
8722 .policy = nl80211_policy,
8723 .flags = GENL_ADMIN_PERM,
8724 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8725 NL80211_FLAG_NEED_RTNL,
8726 },
8727 {
8728 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8729 .doit = nl80211_cancel_remain_on_channel,
8730 .policy = nl80211_policy,
8731 .flags = GENL_ADMIN_PERM,
8732 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8733 NL80211_FLAG_NEED_RTNL,
8734 },
8735 {
8736 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8737 .doit = nl80211_set_tx_bitrate_mask,
8738 .policy = nl80211_policy,
8739 .flags = GENL_ADMIN_PERM,
8740 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8741 NL80211_FLAG_NEED_RTNL,
8742 },
8743 {
8744 .cmd = NL80211_CMD_REGISTER_FRAME,
8745 .doit = nl80211_register_mgmt,
8746 .policy = nl80211_policy,
8747 .flags = GENL_ADMIN_PERM,
8748 .internal_flags = NL80211_FLAG_NEED_WDEV |
8749 NL80211_FLAG_NEED_RTNL,
8750 },
8751 {
8752 .cmd = NL80211_CMD_FRAME,
8753 .doit = nl80211_tx_mgmt,
8754 .policy = nl80211_policy,
8755 .flags = GENL_ADMIN_PERM,
8756 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8757 NL80211_FLAG_NEED_RTNL,
8758 },
8759 {
8760 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8761 .doit = nl80211_tx_mgmt_cancel_wait,
8762 .policy = nl80211_policy,
8763 .flags = GENL_ADMIN_PERM,
8764 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8765 NL80211_FLAG_NEED_RTNL,
8766 },
8767 {
8768 .cmd = NL80211_CMD_SET_POWER_SAVE,
8769 .doit = nl80211_set_power_save,
8770 .policy = nl80211_policy,
8771 .flags = GENL_ADMIN_PERM,
8772 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8773 NL80211_FLAG_NEED_RTNL,
8774 },
8775 {
8776 .cmd = NL80211_CMD_GET_POWER_SAVE,
8777 .doit = nl80211_get_power_save,
8778 .policy = nl80211_policy,
8779 /* can be retrieved by unprivileged users */
8780 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8781 NL80211_FLAG_NEED_RTNL,
8782 },
8783 {
8784 .cmd = NL80211_CMD_SET_CQM,
8785 .doit = nl80211_set_cqm,
8786 .policy = nl80211_policy,
8787 .flags = GENL_ADMIN_PERM,
8788 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8789 NL80211_FLAG_NEED_RTNL,
8790 },
8791 {
8792 .cmd = NL80211_CMD_SET_CHANNEL,
8793 .doit = nl80211_set_channel,
8794 .policy = nl80211_policy,
8795 .flags = GENL_ADMIN_PERM,
8796 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8797 NL80211_FLAG_NEED_RTNL,
8798 },
8799 {
8800 .cmd = NL80211_CMD_SET_WDS_PEER,
8801 .doit = nl80211_set_wds_peer,
8802 .policy = nl80211_policy,
8803 .flags = GENL_ADMIN_PERM,
8804 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8805 NL80211_FLAG_NEED_RTNL,
8806 },
8807 {
8808 .cmd = NL80211_CMD_JOIN_MESH,
8809 .doit = nl80211_join_mesh,
8810 .policy = nl80211_policy,
8811 .flags = GENL_ADMIN_PERM,
8812 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8813 NL80211_FLAG_NEED_RTNL,
8814 },
8815 {
8816 .cmd = NL80211_CMD_LEAVE_MESH,
8817 .doit = nl80211_leave_mesh,
8818 .policy = nl80211_policy,
8819 .flags = GENL_ADMIN_PERM,
8820 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8821 NL80211_FLAG_NEED_RTNL,
8822 },
8823 #ifdef CONFIG_PM
8824 {
8825 .cmd = NL80211_CMD_GET_WOWLAN,
8826 .doit = nl80211_get_wowlan,
8827 .policy = nl80211_policy,
8828 /* can be retrieved by unprivileged users */
8829 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8830 NL80211_FLAG_NEED_RTNL,
8831 },
8832 {
8833 .cmd = NL80211_CMD_SET_WOWLAN,
8834 .doit = nl80211_set_wowlan,
8835 .policy = nl80211_policy,
8836 .flags = GENL_ADMIN_PERM,
8837 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8838 NL80211_FLAG_NEED_RTNL,
8839 },
8840 #endif
8841 {
8842 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8843 .doit = nl80211_set_rekey_data,
8844 .policy = nl80211_policy,
8845 .flags = GENL_ADMIN_PERM,
8846 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8847 NL80211_FLAG_NEED_RTNL,
8848 },
8849 {
8850 .cmd = NL80211_CMD_TDLS_MGMT,
8851 .doit = nl80211_tdls_mgmt,
8852 .policy = nl80211_policy,
8853 .flags = GENL_ADMIN_PERM,
8854 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8855 NL80211_FLAG_NEED_RTNL,
8856 },
8857 {
8858 .cmd = NL80211_CMD_TDLS_OPER,
8859 .doit = nl80211_tdls_oper,
8860 .policy = nl80211_policy,
8861 .flags = GENL_ADMIN_PERM,
8862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8863 NL80211_FLAG_NEED_RTNL,
8864 },
8865 {
8866 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8867 .doit = nl80211_register_unexpected_frame,
8868 .policy = nl80211_policy,
8869 .flags = GENL_ADMIN_PERM,
8870 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8871 NL80211_FLAG_NEED_RTNL,
8872 },
8873 {
8874 .cmd = NL80211_CMD_PROBE_CLIENT,
8875 .doit = nl80211_probe_client,
8876 .policy = nl80211_policy,
8877 .flags = GENL_ADMIN_PERM,
8878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8879 NL80211_FLAG_NEED_RTNL,
8880 },
8881 {
8882 .cmd = NL80211_CMD_REGISTER_BEACONS,
8883 .doit = nl80211_register_beacons,
8884 .policy = nl80211_policy,
8885 .flags = GENL_ADMIN_PERM,
8886 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8887 NL80211_FLAG_NEED_RTNL,
8888 },
8889 {
8890 .cmd = NL80211_CMD_SET_NOACK_MAP,
8891 .doit = nl80211_set_noack_map,
8892 .policy = nl80211_policy,
8893 .flags = GENL_ADMIN_PERM,
8894 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8895 NL80211_FLAG_NEED_RTNL,
8896 },
8897 {
8898 .cmd = NL80211_CMD_START_P2P_DEVICE,
8899 .doit = nl80211_start_p2p_device,
8900 .policy = nl80211_policy,
8901 .flags = GENL_ADMIN_PERM,
8902 .internal_flags = NL80211_FLAG_NEED_WDEV |
8903 NL80211_FLAG_NEED_RTNL,
8904 },
8905 {
8906 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8907 .doit = nl80211_stop_p2p_device,
8908 .policy = nl80211_policy,
8909 .flags = GENL_ADMIN_PERM,
8910 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8911 NL80211_FLAG_NEED_RTNL,
8912 },
8913 {
8914 .cmd = NL80211_CMD_SET_MCAST_RATE,
8915 .doit = nl80211_set_mcast_rate,
8916 .policy = nl80211_policy,
8917 .flags = GENL_ADMIN_PERM,
8918 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8919 NL80211_FLAG_NEED_RTNL,
8920 },
8921 {
8922 .cmd = NL80211_CMD_SET_MAC_ACL,
8923 .doit = nl80211_set_mac_acl,
8924 .policy = nl80211_policy,
8925 .flags = GENL_ADMIN_PERM,
8926 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8927 NL80211_FLAG_NEED_RTNL,
8928 },
8929 {
8930 .cmd = NL80211_CMD_RADAR_DETECT,
8931 .doit = nl80211_start_radar_detection,
8932 .policy = nl80211_policy,
8933 .flags = GENL_ADMIN_PERM,
8934 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8935 NL80211_FLAG_NEED_RTNL,
8936 },
8937 {
8938 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
8939 .doit = nl80211_get_protocol_features,
8940 .policy = nl80211_policy,
8941 },
8942 {
8943 .cmd = NL80211_CMD_UPDATE_FT_IES,
8944 .doit = nl80211_update_ft_ies,
8945 .policy = nl80211_policy,
8946 .flags = GENL_ADMIN_PERM,
8947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8948 NL80211_FLAG_NEED_RTNL,
8949 },
8950 {
8951 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
8952 .doit = nl80211_crit_protocol_start,
8953 .policy = nl80211_policy,
8954 .flags = GENL_ADMIN_PERM,
8955 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8956 NL80211_FLAG_NEED_RTNL,
8957 },
8958 {
8959 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
8960 .doit = nl80211_crit_protocol_stop,
8961 .policy = nl80211_policy,
8962 .flags = GENL_ADMIN_PERM,
8963 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8964 NL80211_FLAG_NEED_RTNL,
8965 }
8966 };
8967
8968 static struct genl_multicast_group nl80211_mlme_mcgrp = {
8969 .name = "mlme",
8970 };
8971
8972 /* multicast groups */
8973 static struct genl_multicast_group nl80211_config_mcgrp = {
8974 .name = "config",
8975 };
8976 static struct genl_multicast_group nl80211_scan_mcgrp = {
8977 .name = "scan",
8978 };
8979 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
8980 .name = "regulatory",
8981 };
8982
8983 /* notification functions */
8984
8985 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
8986 {
8987 struct sk_buff *msg;
8988
8989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8990 if (!msg)
8991 return;
8992
8993 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
8994 false, NULL, NULL, NULL) < 0) {
8995 nlmsg_free(msg);
8996 return;
8997 }
8998
8999 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9000 nl80211_config_mcgrp.id, GFP_KERNEL);
9001 }
9002
9003 static int nl80211_add_scan_req(struct sk_buff *msg,
9004 struct cfg80211_registered_device *rdev)
9005 {
9006 struct cfg80211_scan_request *req = rdev->scan_req;
9007 struct nlattr *nest;
9008 int i;
9009
9010 if (WARN_ON(!req))
9011 return 0;
9012
9013 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9014 if (!nest)
9015 goto nla_put_failure;
9016 for (i = 0; i < req->n_ssids; i++) {
9017 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9018 goto nla_put_failure;
9019 }
9020 nla_nest_end(msg, nest);
9021
9022 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9023 if (!nest)
9024 goto nla_put_failure;
9025 for (i = 0; i < req->n_channels; i++) {
9026 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9027 goto nla_put_failure;
9028 }
9029 nla_nest_end(msg, nest);
9030
9031 if (req->ie &&
9032 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9033 goto nla_put_failure;
9034
9035 if (req->flags)
9036 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9037
9038 return 0;
9039 nla_put_failure:
9040 return -ENOBUFS;
9041 }
9042
9043 static int nl80211_send_scan_msg(struct sk_buff *msg,
9044 struct cfg80211_registered_device *rdev,
9045 struct wireless_dev *wdev,
9046 u32 portid, u32 seq, int flags,
9047 u32 cmd)
9048 {
9049 void *hdr;
9050
9051 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9052 if (!hdr)
9053 return -1;
9054
9055 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9056 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9057 wdev->netdev->ifindex)) ||
9058 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9059 goto nla_put_failure;
9060
9061 /* ignore errors and send incomplete event anyway */
9062 nl80211_add_scan_req(msg, rdev);
9063
9064 return genlmsg_end(msg, hdr);
9065
9066 nla_put_failure:
9067 genlmsg_cancel(msg, hdr);
9068 return -EMSGSIZE;
9069 }
9070
9071 static int
9072 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9073 struct cfg80211_registered_device *rdev,
9074 struct net_device *netdev,
9075 u32 portid, u32 seq, int flags, u32 cmd)
9076 {
9077 void *hdr;
9078
9079 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9080 if (!hdr)
9081 return -1;
9082
9083 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9084 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9085 goto nla_put_failure;
9086
9087 return genlmsg_end(msg, hdr);
9088
9089 nla_put_failure:
9090 genlmsg_cancel(msg, hdr);
9091 return -EMSGSIZE;
9092 }
9093
9094 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9095 struct wireless_dev *wdev)
9096 {
9097 struct sk_buff *msg;
9098
9099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9100 if (!msg)
9101 return;
9102
9103 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9104 NL80211_CMD_TRIGGER_SCAN) < 0) {
9105 nlmsg_free(msg);
9106 return;
9107 }
9108
9109 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9110 nl80211_scan_mcgrp.id, GFP_KERNEL);
9111 }
9112
9113 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9114 struct wireless_dev *wdev)
9115 {
9116 struct sk_buff *msg;
9117
9118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9119 if (!msg)
9120 return;
9121
9122 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9123 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9124 nlmsg_free(msg);
9125 return;
9126 }
9127
9128 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9129 nl80211_scan_mcgrp.id, GFP_KERNEL);
9130 }
9131
9132 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9133 struct wireless_dev *wdev)
9134 {
9135 struct sk_buff *msg;
9136
9137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9138 if (!msg)
9139 return;
9140
9141 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9142 NL80211_CMD_SCAN_ABORTED) < 0) {
9143 nlmsg_free(msg);
9144 return;
9145 }
9146
9147 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9148 nl80211_scan_mcgrp.id, GFP_KERNEL);
9149 }
9150
9151 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9152 struct net_device *netdev)
9153 {
9154 struct sk_buff *msg;
9155
9156 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9157 if (!msg)
9158 return;
9159
9160 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9161 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9162 nlmsg_free(msg);
9163 return;
9164 }
9165
9166 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9167 nl80211_scan_mcgrp.id, GFP_KERNEL);
9168 }
9169
9170 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9171 struct net_device *netdev, u32 cmd)
9172 {
9173 struct sk_buff *msg;
9174
9175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9176 if (!msg)
9177 return;
9178
9179 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9180 nlmsg_free(msg);
9181 return;
9182 }
9183
9184 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9185 nl80211_scan_mcgrp.id, GFP_KERNEL);
9186 }
9187
9188 /*
9189 * This can happen on global regulatory changes or device specific settings
9190 * based on custom world regulatory domains.
9191 */
9192 void nl80211_send_reg_change_event(struct regulatory_request *request)
9193 {
9194 struct sk_buff *msg;
9195 void *hdr;
9196
9197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9198 if (!msg)
9199 return;
9200
9201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9202 if (!hdr) {
9203 nlmsg_free(msg);
9204 return;
9205 }
9206
9207 /* Userspace can always count this one always being set */
9208 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9209 goto nla_put_failure;
9210
9211 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9212 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9213 NL80211_REGDOM_TYPE_WORLD))
9214 goto nla_put_failure;
9215 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9216 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9217 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9218 goto nla_put_failure;
9219 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9220 request->intersect) {
9221 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9222 NL80211_REGDOM_TYPE_INTERSECTION))
9223 goto nla_put_failure;
9224 } else {
9225 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9226 NL80211_REGDOM_TYPE_COUNTRY) ||
9227 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9228 request->alpha2))
9229 goto nla_put_failure;
9230 }
9231
9232 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9233 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9234 goto nla_put_failure;
9235
9236 genlmsg_end(msg, hdr);
9237
9238 rcu_read_lock();
9239 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9240 GFP_ATOMIC);
9241 rcu_read_unlock();
9242
9243 return;
9244
9245 nla_put_failure:
9246 genlmsg_cancel(msg, hdr);
9247 nlmsg_free(msg);
9248 }
9249
9250 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9251 struct net_device *netdev,
9252 const u8 *buf, size_t len,
9253 enum nl80211_commands cmd, gfp_t gfp)
9254 {
9255 struct sk_buff *msg;
9256 void *hdr;
9257
9258 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9259 if (!msg)
9260 return;
9261
9262 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9263 if (!hdr) {
9264 nlmsg_free(msg);
9265 return;
9266 }
9267
9268 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9269 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9270 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9271 goto nla_put_failure;
9272
9273 genlmsg_end(msg, hdr);
9274
9275 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9276 nl80211_mlme_mcgrp.id, gfp);
9277 return;
9278
9279 nla_put_failure:
9280 genlmsg_cancel(msg, hdr);
9281 nlmsg_free(msg);
9282 }
9283
9284 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9285 struct net_device *netdev, const u8 *buf,
9286 size_t len, gfp_t gfp)
9287 {
9288 nl80211_send_mlme_event(rdev, netdev, buf, len,
9289 NL80211_CMD_AUTHENTICATE, gfp);
9290 }
9291
9292 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9293 struct net_device *netdev, const u8 *buf,
9294 size_t len, gfp_t gfp)
9295 {
9296 nl80211_send_mlme_event(rdev, netdev, buf, len,
9297 NL80211_CMD_ASSOCIATE, gfp);
9298 }
9299
9300 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9301 struct net_device *netdev, const u8 *buf,
9302 size_t len, gfp_t gfp)
9303 {
9304 nl80211_send_mlme_event(rdev, netdev, buf, len,
9305 NL80211_CMD_DEAUTHENTICATE, gfp);
9306 }
9307
9308 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9309 struct net_device *netdev, const u8 *buf,
9310 size_t len, gfp_t gfp)
9311 {
9312 nl80211_send_mlme_event(rdev, netdev, buf, len,
9313 NL80211_CMD_DISASSOCIATE, gfp);
9314 }
9315
9316 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9317 size_t len)
9318 {
9319 struct wireless_dev *wdev = dev->ieee80211_ptr;
9320 struct wiphy *wiphy = wdev->wiphy;
9321 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9322 const struct ieee80211_mgmt *mgmt = (void *)buf;
9323 u32 cmd;
9324
9325 if (WARN_ON(len < 2))
9326 return;
9327
9328 if (ieee80211_is_deauth(mgmt->frame_control))
9329 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9330 else
9331 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9332
9333 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9334 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9335 }
9336 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9337
9338 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9339 struct net_device *netdev, int cmd,
9340 const u8 *addr, gfp_t gfp)
9341 {
9342 struct sk_buff *msg;
9343 void *hdr;
9344
9345 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9346 if (!msg)
9347 return;
9348
9349 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9350 if (!hdr) {
9351 nlmsg_free(msg);
9352 return;
9353 }
9354
9355 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9356 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9357 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9358 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9359 goto nla_put_failure;
9360
9361 genlmsg_end(msg, hdr);
9362
9363 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9364 nl80211_mlme_mcgrp.id, gfp);
9365 return;
9366
9367 nla_put_failure:
9368 genlmsg_cancel(msg, hdr);
9369 nlmsg_free(msg);
9370 }
9371
9372 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9373 struct net_device *netdev, const u8 *addr,
9374 gfp_t gfp)
9375 {
9376 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9377 addr, gfp);
9378 }
9379
9380 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9381 struct net_device *netdev, const u8 *addr,
9382 gfp_t gfp)
9383 {
9384 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9385 addr, gfp);
9386 }
9387
9388 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9389 struct net_device *netdev, const u8 *bssid,
9390 const u8 *req_ie, size_t req_ie_len,
9391 const u8 *resp_ie, size_t resp_ie_len,
9392 u16 status, gfp_t gfp)
9393 {
9394 struct sk_buff *msg;
9395 void *hdr;
9396
9397 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9398 if (!msg)
9399 return;
9400
9401 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9402 if (!hdr) {
9403 nlmsg_free(msg);
9404 return;
9405 }
9406
9407 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9408 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9409 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9410 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9411 (req_ie &&
9412 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9413 (resp_ie &&
9414 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9415 goto nla_put_failure;
9416
9417 genlmsg_end(msg, hdr);
9418
9419 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9420 nl80211_mlme_mcgrp.id, gfp);
9421 return;
9422
9423 nla_put_failure:
9424 genlmsg_cancel(msg, hdr);
9425 nlmsg_free(msg);
9426
9427 }
9428
9429 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9430 struct net_device *netdev, const u8 *bssid,
9431 const u8 *req_ie, size_t req_ie_len,
9432 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9433 {
9434 struct sk_buff *msg;
9435 void *hdr;
9436
9437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9438 if (!msg)
9439 return;
9440
9441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9442 if (!hdr) {
9443 nlmsg_free(msg);
9444 return;
9445 }
9446
9447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9448 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9450 (req_ie &&
9451 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9452 (resp_ie &&
9453 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9454 goto nla_put_failure;
9455
9456 genlmsg_end(msg, hdr);
9457
9458 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9459 nl80211_mlme_mcgrp.id, gfp);
9460 return;
9461
9462 nla_put_failure:
9463 genlmsg_cancel(msg, hdr);
9464 nlmsg_free(msg);
9465
9466 }
9467
9468 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9469 struct net_device *netdev, u16 reason,
9470 const u8 *ie, size_t ie_len, bool from_ap)
9471 {
9472 struct sk_buff *msg;
9473 void *hdr;
9474
9475 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9476 if (!msg)
9477 return;
9478
9479 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9480 if (!hdr) {
9481 nlmsg_free(msg);
9482 return;
9483 }
9484
9485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9486 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9487 (from_ap && reason &&
9488 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9489 (from_ap &&
9490 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9491 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9492 goto nla_put_failure;
9493
9494 genlmsg_end(msg, hdr);
9495
9496 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9497 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9498 return;
9499
9500 nla_put_failure:
9501 genlmsg_cancel(msg, hdr);
9502 nlmsg_free(msg);
9503
9504 }
9505
9506 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9507 struct net_device *netdev, const u8 *bssid,
9508 gfp_t gfp)
9509 {
9510 struct sk_buff *msg;
9511 void *hdr;
9512
9513 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9514 if (!msg)
9515 return;
9516
9517 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9518 if (!hdr) {
9519 nlmsg_free(msg);
9520 return;
9521 }
9522
9523 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9524 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9525 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9526 goto nla_put_failure;
9527
9528 genlmsg_end(msg, hdr);
9529
9530 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9531 nl80211_mlme_mcgrp.id, gfp);
9532 return;
9533
9534 nla_put_failure:
9535 genlmsg_cancel(msg, hdr);
9536 nlmsg_free(msg);
9537 }
9538
9539 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9540 const u8* ie, u8 ie_len, gfp_t gfp)
9541 {
9542 struct wireless_dev *wdev = dev->ieee80211_ptr;
9543 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9544 struct sk_buff *msg;
9545 void *hdr;
9546
9547 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9548 return;
9549
9550 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9551
9552 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9553 if (!msg)
9554 return;
9555
9556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9557 if (!hdr) {
9558 nlmsg_free(msg);
9559 return;
9560 }
9561
9562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9563 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9565 (ie_len && ie &&
9566 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9567 goto nla_put_failure;
9568
9569 genlmsg_end(msg, hdr);
9570
9571 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9572 nl80211_mlme_mcgrp.id, gfp);
9573 return;
9574
9575 nla_put_failure:
9576 genlmsg_cancel(msg, hdr);
9577 nlmsg_free(msg);
9578 }
9579 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9580
9581 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9582 struct net_device *netdev, const u8 *addr,
9583 enum nl80211_key_type key_type, int key_id,
9584 const u8 *tsc, gfp_t gfp)
9585 {
9586 struct sk_buff *msg;
9587 void *hdr;
9588
9589 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9590 if (!msg)
9591 return;
9592
9593 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9594 if (!hdr) {
9595 nlmsg_free(msg);
9596 return;
9597 }
9598
9599 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9600 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9601 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9602 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9603 (key_id != -1 &&
9604 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9605 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9606 goto nla_put_failure;
9607
9608 genlmsg_end(msg, hdr);
9609
9610 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9611 nl80211_mlme_mcgrp.id, gfp);
9612 return;
9613
9614 nla_put_failure:
9615 genlmsg_cancel(msg, hdr);
9616 nlmsg_free(msg);
9617 }
9618
9619 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9620 struct ieee80211_channel *channel_before,
9621 struct ieee80211_channel *channel_after)
9622 {
9623 struct sk_buff *msg;
9624 void *hdr;
9625 struct nlattr *nl_freq;
9626
9627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9628 if (!msg)
9629 return;
9630
9631 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9632 if (!hdr) {
9633 nlmsg_free(msg);
9634 return;
9635 }
9636
9637 /*
9638 * Since we are applying the beacon hint to a wiphy we know its
9639 * wiphy_idx is valid
9640 */
9641 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9642 goto nla_put_failure;
9643
9644 /* Before */
9645 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9646 if (!nl_freq)
9647 goto nla_put_failure;
9648 if (nl80211_msg_put_channel(msg, channel_before, false))
9649 goto nla_put_failure;
9650 nla_nest_end(msg, nl_freq);
9651
9652 /* After */
9653 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9654 if (!nl_freq)
9655 goto nla_put_failure;
9656 if (nl80211_msg_put_channel(msg, channel_after, false))
9657 goto nla_put_failure;
9658 nla_nest_end(msg, nl_freq);
9659
9660 genlmsg_end(msg, hdr);
9661
9662 rcu_read_lock();
9663 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9664 GFP_ATOMIC);
9665 rcu_read_unlock();
9666
9667 return;
9668
9669 nla_put_failure:
9670 genlmsg_cancel(msg, hdr);
9671 nlmsg_free(msg);
9672 }
9673
9674 static void nl80211_send_remain_on_chan_event(
9675 int cmd, struct cfg80211_registered_device *rdev,
9676 struct wireless_dev *wdev, u64 cookie,
9677 struct ieee80211_channel *chan,
9678 unsigned int duration, gfp_t gfp)
9679 {
9680 struct sk_buff *msg;
9681 void *hdr;
9682
9683 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9684 if (!msg)
9685 return;
9686
9687 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9688 if (!hdr) {
9689 nlmsg_free(msg);
9690 return;
9691 }
9692
9693 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9694 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9695 wdev->netdev->ifindex)) ||
9696 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9697 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9698 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9699 NL80211_CHAN_NO_HT) ||
9700 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9701 goto nla_put_failure;
9702
9703 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9704 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9705 goto nla_put_failure;
9706
9707 genlmsg_end(msg, hdr);
9708
9709 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9710 nl80211_mlme_mcgrp.id, gfp);
9711 return;
9712
9713 nla_put_failure:
9714 genlmsg_cancel(msg, hdr);
9715 nlmsg_free(msg);
9716 }
9717
9718 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9719 struct ieee80211_channel *chan,
9720 unsigned int duration, gfp_t gfp)
9721 {
9722 struct wiphy *wiphy = wdev->wiphy;
9723 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9724
9725 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9726 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9727 rdev, wdev, cookie, chan,
9728 duration, gfp);
9729 }
9730 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9731
9732 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9733 struct ieee80211_channel *chan,
9734 gfp_t gfp)
9735 {
9736 struct wiphy *wiphy = wdev->wiphy;
9737 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9738
9739 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9740 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9741 rdev, wdev, cookie, chan, 0, gfp);
9742 }
9743 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9744
9745 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9746 struct station_info *sinfo, gfp_t gfp)
9747 {
9748 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9749 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9750 struct sk_buff *msg;
9751
9752 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9753
9754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9755 if (!msg)
9756 return;
9757
9758 if (nl80211_send_station(msg, 0, 0, 0,
9759 rdev, dev, mac_addr, sinfo) < 0) {
9760 nlmsg_free(msg);
9761 return;
9762 }
9763
9764 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9765 nl80211_mlme_mcgrp.id, gfp);
9766 }
9767 EXPORT_SYMBOL(cfg80211_new_sta);
9768
9769 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9770 {
9771 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9772 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9773 struct sk_buff *msg;
9774 void *hdr;
9775
9776 trace_cfg80211_del_sta(dev, mac_addr);
9777
9778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9779 if (!msg)
9780 return;
9781
9782 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9783 if (!hdr) {
9784 nlmsg_free(msg);
9785 return;
9786 }
9787
9788 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9789 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9790 goto nla_put_failure;
9791
9792 genlmsg_end(msg, hdr);
9793
9794 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9795 nl80211_mlme_mcgrp.id, gfp);
9796 return;
9797
9798 nla_put_failure:
9799 genlmsg_cancel(msg, hdr);
9800 nlmsg_free(msg);
9801 }
9802 EXPORT_SYMBOL(cfg80211_del_sta);
9803
9804 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9805 enum nl80211_connect_failed_reason reason,
9806 gfp_t gfp)
9807 {
9808 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9809 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9810 struct sk_buff *msg;
9811 void *hdr;
9812
9813 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9814 if (!msg)
9815 return;
9816
9817 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9818 if (!hdr) {
9819 nlmsg_free(msg);
9820 return;
9821 }
9822
9823 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9824 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9825 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9826 goto nla_put_failure;
9827
9828 genlmsg_end(msg, hdr);
9829
9830 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9831 nl80211_mlme_mcgrp.id, gfp);
9832 return;
9833
9834 nla_put_failure:
9835 genlmsg_cancel(msg, hdr);
9836 nlmsg_free(msg);
9837 }
9838 EXPORT_SYMBOL(cfg80211_conn_failed);
9839
9840 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9841 const u8 *addr, gfp_t gfp)
9842 {
9843 struct wireless_dev *wdev = dev->ieee80211_ptr;
9844 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9845 struct sk_buff *msg;
9846 void *hdr;
9847 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9848
9849 if (!nlportid)
9850 return false;
9851
9852 msg = nlmsg_new(100, gfp);
9853 if (!msg)
9854 return true;
9855
9856 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9857 if (!hdr) {
9858 nlmsg_free(msg);
9859 return true;
9860 }
9861
9862 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9863 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9864 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9865 goto nla_put_failure;
9866
9867 genlmsg_end(msg, hdr);
9868 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9869 return true;
9870
9871 nla_put_failure:
9872 genlmsg_cancel(msg, hdr);
9873 nlmsg_free(msg);
9874 return true;
9875 }
9876
9877 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9878 const u8 *addr, gfp_t gfp)
9879 {
9880 struct wireless_dev *wdev = dev->ieee80211_ptr;
9881 bool ret;
9882
9883 trace_cfg80211_rx_spurious_frame(dev, addr);
9884
9885 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9886 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9887 trace_cfg80211_return_bool(false);
9888 return false;
9889 }
9890 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9891 addr, gfp);
9892 trace_cfg80211_return_bool(ret);
9893 return ret;
9894 }
9895 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9896
9897 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9898 const u8 *addr, gfp_t gfp)
9899 {
9900 struct wireless_dev *wdev = dev->ieee80211_ptr;
9901 bool ret;
9902
9903 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9904
9905 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9906 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9907 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9908 trace_cfg80211_return_bool(false);
9909 return false;
9910 }
9911 ret = __nl80211_unexpected_frame(dev,
9912 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9913 addr, gfp);
9914 trace_cfg80211_return_bool(ret);
9915 return ret;
9916 }
9917 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9918
9919 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9920 struct wireless_dev *wdev, u32 nlportid,
9921 int freq, int sig_dbm,
9922 const u8 *buf, size_t len, gfp_t gfp)
9923 {
9924 struct net_device *netdev = wdev->netdev;
9925 struct sk_buff *msg;
9926 void *hdr;
9927
9928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9929 if (!msg)
9930 return -ENOMEM;
9931
9932 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9933 if (!hdr) {
9934 nlmsg_free(msg);
9935 return -ENOMEM;
9936 }
9937
9938 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9939 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9940 netdev->ifindex)) ||
9941 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9942 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
9943 (sig_dbm &&
9944 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9945 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9946 goto nla_put_failure;
9947
9948 genlmsg_end(msg, hdr);
9949
9950 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9951
9952 nla_put_failure:
9953 genlmsg_cancel(msg, hdr);
9954 nlmsg_free(msg);
9955 return -ENOBUFS;
9956 }
9957
9958 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
9959 const u8 *buf, size_t len, bool ack, gfp_t gfp)
9960 {
9961 struct wiphy *wiphy = wdev->wiphy;
9962 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9963 struct net_device *netdev = wdev->netdev;
9964 struct sk_buff *msg;
9965 void *hdr;
9966
9967 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
9968
9969 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9970 if (!msg)
9971 return;
9972
9973 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
9974 if (!hdr) {
9975 nlmsg_free(msg);
9976 return;
9977 }
9978
9979 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9980 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9981 netdev->ifindex)) ||
9982 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9983 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
9984 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
9985 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
9986 goto nla_put_failure;
9987
9988 genlmsg_end(msg, hdr);
9989
9990 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
9991 return;
9992
9993 nla_put_failure:
9994 genlmsg_cancel(msg, hdr);
9995 nlmsg_free(msg);
9996 }
9997 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
9998
9999 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10000 enum nl80211_cqm_rssi_threshold_event rssi_event,
10001 gfp_t gfp)
10002 {
10003 struct wireless_dev *wdev = dev->ieee80211_ptr;
10004 struct wiphy *wiphy = wdev->wiphy;
10005 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10006 struct sk_buff *msg;
10007 struct nlattr *pinfoattr;
10008 void *hdr;
10009
10010 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10011
10012 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10013 if (!msg)
10014 return;
10015
10016 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10017 if (!hdr) {
10018 nlmsg_free(msg);
10019 return;
10020 }
10021
10022 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10023 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10024 goto nla_put_failure;
10025
10026 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10027 if (!pinfoattr)
10028 goto nla_put_failure;
10029
10030 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10031 rssi_event))
10032 goto nla_put_failure;
10033
10034 nla_nest_end(msg, pinfoattr);
10035
10036 genlmsg_end(msg, hdr);
10037
10038 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10039 nl80211_mlme_mcgrp.id, gfp);
10040 return;
10041
10042 nla_put_failure:
10043 genlmsg_cancel(msg, hdr);
10044 nlmsg_free(msg);
10045 }
10046 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10047
10048 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10049 struct net_device *netdev, const u8 *bssid,
10050 const u8 *replay_ctr, gfp_t gfp)
10051 {
10052 struct sk_buff *msg;
10053 struct nlattr *rekey_attr;
10054 void *hdr;
10055
10056 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10057 if (!msg)
10058 return;
10059
10060 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10061 if (!hdr) {
10062 nlmsg_free(msg);
10063 return;
10064 }
10065
10066 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10067 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10068 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10069 goto nla_put_failure;
10070
10071 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10072 if (!rekey_attr)
10073 goto nla_put_failure;
10074
10075 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10076 NL80211_REPLAY_CTR_LEN, replay_ctr))
10077 goto nla_put_failure;
10078
10079 nla_nest_end(msg, rekey_attr);
10080
10081 genlmsg_end(msg, hdr);
10082
10083 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10084 nl80211_mlme_mcgrp.id, gfp);
10085 return;
10086
10087 nla_put_failure:
10088 genlmsg_cancel(msg, hdr);
10089 nlmsg_free(msg);
10090 }
10091
10092 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10093 const u8 *replay_ctr, gfp_t gfp)
10094 {
10095 struct wireless_dev *wdev = dev->ieee80211_ptr;
10096 struct wiphy *wiphy = wdev->wiphy;
10097 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10098
10099 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10100 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10101 }
10102 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10103
10104 static void
10105 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10106 struct net_device *netdev, int index,
10107 const u8 *bssid, bool preauth, gfp_t gfp)
10108 {
10109 struct sk_buff *msg;
10110 struct nlattr *attr;
10111 void *hdr;
10112
10113 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10114 if (!msg)
10115 return;
10116
10117 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10118 if (!hdr) {
10119 nlmsg_free(msg);
10120 return;
10121 }
10122
10123 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10124 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10125 goto nla_put_failure;
10126
10127 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10128 if (!attr)
10129 goto nla_put_failure;
10130
10131 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10132 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10133 (preauth &&
10134 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10135 goto nla_put_failure;
10136
10137 nla_nest_end(msg, attr);
10138
10139 genlmsg_end(msg, hdr);
10140
10141 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10142 nl80211_mlme_mcgrp.id, gfp);
10143 return;
10144
10145 nla_put_failure:
10146 genlmsg_cancel(msg, hdr);
10147 nlmsg_free(msg);
10148 }
10149
10150 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10151 const u8 *bssid, bool preauth, gfp_t gfp)
10152 {
10153 struct wireless_dev *wdev = dev->ieee80211_ptr;
10154 struct wiphy *wiphy = wdev->wiphy;
10155 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10156
10157 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10158 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10159 }
10160 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10161
10162 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10163 struct net_device *netdev,
10164 struct cfg80211_chan_def *chandef,
10165 gfp_t gfp)
10166 {
10167 struct sk_buff *msg;
10168 void *hdr;
10169
10170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10171 if (!msg)
10172 return;
10173
10174 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10175 if (!hdr) {
10176 nlmsg_free(msg);
10177 return;
10178 }
10179
10180 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10181 goto nla_put_failure;
10182
10183 if (nl80211_send_chandef(msg, chandef))
10184 goto nla_put_failure;
10185
10186 genlmsg_end(msg, hdr);
10187
10188 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10189 nl80211_mlme_mcgrp.id, gfp);
10190 return;
10191
10192 nla_put_failure:
10193 genlmsg_cancel(msg, hdr);
10194 nlmsg_free(msg);
10195 }
10196
10197 void cfg80211_ch_switch_notify(struct net_device *dev,
10198 struct cfg80211_chan_def *chandef)
10199 {
10200 struct wireless_dev *wdev = dev->ieee80211_ptr;
10201 struct wiphy *wiphy = wdev->wiphy;
10202 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10203
10204 trace_cfg80211_ch_switch_notify(dev, chandef);
10205
10206 wdev_lock(wdev);
10207
10208 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10209 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10210 goto out;
10211
10212 wdev->channel = chandef->chan;
10213 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10214 out:
10215 wdev_unlock(wdev);
10216 return;
10217 }
10218 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10219
10220 void cfg80211_cqm_txe_notify(struct net_device *dev,
10221 const u8 *peer, u32 num_packets,
10222 u32 rate, u32 intvl, gfp_t gfp)
10223 {
10224 struct wireless_dev *wdev = dev->ieee80211_ptr;
10225 struct wiphy *wiphy = wdev->wiphy;
10226 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10227 struct sk_buff *msg;
10228 struct nlattr *pinfoattr;
10229 void *hdr;
10230
10231 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10232 if (!msg)
10233 return;
10234
10235 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10236 if (!hdr) {
10237 nlmsg_free(msg);
10238 return;
10239 }
10240
10241 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10242 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10243 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10244 goto nla_put_failure;
10245
10246 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10247 if (!pinfoattr)
10248 goto nla_put_failure;
10249
10250 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10251 goto nla_put_failure;
10252
10253 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10254 goto nla_put_failure;
10255
10256 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10257 goto nla_put_failure;
10258
10259 nla_nest_end(msg, pinfoattr);
10260
10261 genlmsg_end(msg, hdr);
10262
10263 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10264 nl80211_mlme_mcgrp.id, gfp);
10265 return;
10266
10267 nla_put_failure:
10268 genlmsg_cancel(msg, hdr);
10269 nlmsg_free(msg);
10270 }
10271 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10272
10273 void
10274 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10275 struct cfg80211_chan_def *chandef,
10276 enum nl80211_radar_event event,
10277 struct net_device *netdev, gfp_t gfp)
10278 {
10279 struct sk_buff *msg;
10280 void *hdr;
10281
10282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10283 if (!msg)
10284 return;
10285
10286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10287 if (!hdr) {
10288 nlmsg_free(msg);
10289 return;
10290 }
10291
10292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10293 goto nla_put_failure;
10294
10295 /* NOP and radar events don't need a netdev parameter */
10296 if (netdev) {
10297 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10298
10299 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10300 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10301 goto nla_put_failure;
10302 }
10303
10304 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10305 goto nla_put_failure;
10306
10307 if (nl80211_send_chandef(msg, chandef))
10308 goto nla_put_failure;
10309
10310 genlmsg_end(msg, hdr);
10311
10312 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10313 nl80211_mlme_mcgrp.id, gfp);
10314 return;
10315
10316 nla_put_failure:
10317 genlmsg_cancel(msg, hdr);
10318 nlmsg_free(msg);
10319 }
10320
10321 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10322 const u8 *peer, u32 num_packets, gfp_t gfp)
10323 {
10324 struct wireless_dev *wdev = dev->ieee80211_ptr;
10325 struct wiphy *wiphy = wdev->wiphy;
10326 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10327 struct sk_buff *msg;
10328 struct nlattr *pinfoattr;
10329 void *hdr;
10330
10331 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10332
10333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10334 if (!msg)
10335 return;
10336
10337 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10338 if (!hdr) {
10339 nlmsg_free(msg);
10340 return;
10341 }
10342
10343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10344 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10345 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10346 goto nla_put_failure;
10347
10348 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10349 if (!pinfoattr)
10350 goto nla_put_failure;
10351
10352 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10353 goto nla_put_failure;
10354
10355 nla_nest_end(msg, pinfoattr);
10356
10357 genlmsg_end(msg, hdr);
10358
10359 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10360 nl80211_mlme_mcgrp.id, gfp);
10361 return;
10362
10363 nla_put_failure:
10364 genlmsg_cancel(msg, hdr);
10365 nlmsg_free(msg);
10366 }
10367 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10368
10369 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10370 u64 cookie, bool acked, gfp_t gfp)
10371 {
10372 struct wireless_dev *wdev = dev->ieee80211_ptr;
10373 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10374 struct sk_buff *msg;
10375 void *hdr;
10376
10377 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10378
10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380
10381 if (!msg)
10382 return;
10383
10384 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10385 if (!hdr) {
10386 nlmsg_free(msg);
10387 return;
10388 }
10389
10390 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10391 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10392 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10393 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10394 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10395 goto nla_put_failure;
10396
10397 genlmsg_end(msg, hdr);
10398
10399 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10400 nl80211_mlme_mcgrp.id, gfp);
10401 return;
10402
10403 nla_put_failure:
10404 genlmsg_cancel(msg, hdr);
10405 nlmsg_free(msg);
10406 }
10407 EXPORT_SYMBOL(cfg80211_probe_status);
10408
10409 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10410 const u8 *frame, size_t len,
10411 int freq, int sig_dbm)
10412 {
10413 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10414 struct sk_buff *msg;
10415 void *hdr;
10416 struct cfg80211_beacon_registration *reg;
10417
10418 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10419
10420 spin_lock_bh(&rdev->beacon_registrations_lock);
10421 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10422 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10423 if (!msg) {
10424 spin_unlock_bh(&rdev->beacon_registrations_lock);
10425 return;
10426 }
10427
10428 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10429 if (!hdr)
10430 goto nla_put_failure;
10431
10432 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10433 (freq &&
10434 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10435 (sig_dbm &&
10436 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10437 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10438 goto nla_put_failure;
10439
10440 genlmsg_end(msg, hdr);
10441
10442 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10443 }
10444 spin_unlock_bh(&rdev->beacon_registrations_lock);
10445 return;
10446
10447 nla_put_failure:
10448 spin_unlock_bh(&rdev->beacon_registrations_lock);
10449 if (hdr)
10450 genlmsg_cancel(msg, hdr);
10451 nlmsg_free(msg);
10452 }
10453 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10454
10455 #ifdef CONFIG_PM
10456 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10457 struct cfg80211_wowlan_wakeup *wakeup,
10458 gfp_t gfp)
10459 {
10460 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10461 struct sk_buff *msg;
10462 void *hdr;
10463 int size = 200;
10464
10465 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10466
10467 if (wakeup)
10468 size += wakeup->packet_present_len;
10469
10470 msg = nlmsg_new(size, gfp);
10471 if (!msg)
10472 return;
10473
10474 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10475 if (!hdr)
10476 goto free_msg;
10477
10478 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10479 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10480 goto free_msg;
10481
10482 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10483 wdev->netdev->ifindex))
10484 goto free_msg;
10485
10486 if (wakeup) {
10487 struct nlattr *reasons;
10488
10489 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10490
10491 if (wakeup->disconnect &&
10492 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10493 goto free_msg;
10494 if (wakeup->magic_pkt &&
10495 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10496 goto free_msg;
10497 if (wakeup->gtk_rekey_failure &&
10498 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10499 goto free_msg;
10500 if (wakeup->eap_identity_req &&
10501 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10502 goto free_msg;
10503 if (wakeup->four_way_handshake &&
10504 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10505 goto free_msg;
10506 if (wakeup->rfkill_release &&
10507 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10508 goto free_msg;
10509
10510 if (wakeup->pattern_idx >= 0 &&
10511 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10512 wakeup->pattern_idx))
10513 goto free_msg;
10514
10515 if (wakeup->tcp_match)
10516 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10517
10518 if (wakeup->tcp_connlost)
10519 nla_put_flag(msg,
10520 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10521
10522 if (wakeup->tcp_nomoretokens)
10523 nla_put_flag(msg,
10524 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10525
10526 if (wakeup->packet) {
10527 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10528 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10529
10530 if (!wakeup->packet_80211) {
10531 pkt_attr =
10532 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10533 len_attr =
10534 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10535 }
10536
10537 if (wakeup->packet_len &&
10538 nla_put_u32(msg, len_attr, wakeup->packet_len))
10539 goto free_msg;
10540
10541 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10542 wakeup->packet))
10543 goto free_msg;
10544 }
10545
10546 nla_nest_end(msg, reasons);
10547 }
10548
10549 genlmsg_end(msg, hdr);
10550
10551 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10552 nl80211_mlme_mcgrp.id, gfp);
10553 return;
10554
10555 free_msg:
10556 nlmsg_free(msg);
10557 }
10558 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10559 #endif
10560
10561 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10562 enum nl80211_tdls_operation oper,
10563 u16 reason_code, gfp_t gfp)
10564 {
10565 struct wireless_dev *wdev = dev->ieee80211_ptr;
10566 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10567 struct sk_buff *msg;
10568 void *hdr;
10569
10570 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10571 reason_code);
10572
10573 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10574 if (!msg)
10575 return;
10576
10577 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10578 if (!hdr) {
10579 nlmsg_free(msg);
10580 return;
10581 }
10582
10583 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10584 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10585 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10586 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10587 (reason_code > 0 &&
10588 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10589 goto nla_put_failure;
10590
10591 genlmsg_end(msg, hdr);
10592
10593 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10594 nl80211_mlme_mcgrp.id, gfp);
10595 return;
10596
10597 nla_put_failure:
10598 genlmsg_cancel(msg, hdr);
10599 nlmsg_free(msg);
10600 }
10601 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10602
10603 static int nl80211_netlink_notify(struct notifier_block * nb,
10604 unsigned long state,
10605 void *_notify)
10606 {
10607 struct netlink_notify *notify = _notify;
10608 struct cfg80211_registered_device *rdev;
10609 struct wireless_dev *wdev;
10610 struct cfg80211_beacon_registration *reg, *tmp;
10611
10612 if (state != NETLINK_URELEASE)
10613 return NOTIFY_DONE;
10614
10615 rcu_read_lock();
10616
10617 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10618 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10619 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10620
10621 spin_lock_bh(&rdev->beacon_registrations_lock);
10622 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10623 list) {
10624 if (reg->nlportid == notify->portid) {
10625 list_del(&reg->list);
10626 kfree(reg);
10627 break;
10628 }
10629 }
10630 spin_unlock_bh(&rdev->beacon_registrations_lock);
10631 }
10632
10633 rcu_read_unlock();
10634
10635 return NOTIFY_DONE;
10636 }
10637
10638 static struct notifier_block nl80211_netlink_notifier = {
10639 .notifier_call = nl80211_netlink_notify,
10640 };
10641
10642 void cfg80211_ft_event(struct net_device *netdev,
10643 struct cfg80211_ft_event_params *ft_event)
10644 {
10645 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10646 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10647 struct sk_buff *msg;
10648 void *hdr;
10649
10650 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10651
10652 if (!ft_event->target_ap)
10653 return;
10654
10655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10656 if (!msg)
10657 return;
10658
10659 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10660 if (!hdr) {
10661 nlmsg_free(msg);
10662 return;
10663 }
10664
10665 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10666 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10667 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10668 if (ft_event->ies)
10669 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10670 if (ft_event->ric_ies)
10671 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10672 ft_event->ric_ies);
10673
10674 genlmsg_end(msg, hdr);
10675
10676 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10677 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10678 }
10679 EXPORT_SYMBOL(cfg80211_ft_event);
10680
10681 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10682 {
10683 struct cfg80211_registered_device *rdev;
10684 struct sk_buff *msg;
10685 void *hdr;
10686 u32 nlportid;
10687
10688 rdev = wiphy_to_dev(wdev->wiphy);
10689 if (!rdev->crit_proto_nlportid)
10690 return;
10691
10692 nlportid = rdev->crit_proto_nlportid;
10693 rdev->crit_proto_nlportid = 0;
10694
10695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10696 if (!msg)
10697 return;
10698
10699 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10700 if (!hdr)
10701 goto nla_put_failure;
10702
10703 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10704 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10705 goto nla_put_failure;
10706
10707 genlmsg_end(msg, hdr);
10708
10709 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10710 return;
10711
10712 nla_put_failure:
10713 if (hdr)
10714 genlmsg_cancel(msg, hdr);
10715 nlmsg_free(msg);
10716
10717 }
10718 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10719
10720 /* initialisation/exit functions */
10721
10722 int nl80211_init(void)
10723 {
10724 int err;
10725
10726 err = genl_register_family_with_ops(&nl80211_fam,
10727 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10728 if (err)
10729 return err;
10730
10731 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10732 if (err)
10733 goto err_out;
10734
10735 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10736 if (err)
10737 goto err_out;
10738
10739 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10740 if (err)
10741 goto err_out;
10742
10743 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10744 if (err)
10745 goto err_out;
10746
10747 #ifdef CONFIG_NL80211_TESTMODE
10748 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10749 if (err)
10750 goto err_out;
10751 #endif
10752
10753 err = netlink_register_notifier(&nl80211_netlink_notifier);
10754 if (err)
10755 goto err_out;
10756
10757 return 0;
10758 err_out:
10759 genl_unregister_family(&nl80211_fam);
10760 return err;
10761 }
10762
10763 void nl80211_exit(void)
10764 {
10765 netlink_unregister_notifier(&nl80211_netlink_notifier);
10766 genl_unregister_family(&nl80211_fam);
10767 }
Linux kernel - Deliverables
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