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Merge tag 'remoteproc-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / net / wireless / nl80211.c
blob1cc47aca7f05baee3e7ffdf18a4e002b2d62279d
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 case NL80211_IFTYPE_STATION:
804 case NL80211_IFTYPE_P2P_CLIENT:
805 if (!wdev->current_bss)
806 return -ENOLINK;
807 break;
808 default:
809 return -EINVAL;
810 }
811
812 return 0;
813 }
814
815 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
816 {
817 struct nlattr *nl_modes = nla_nest_start(msg, attr);
818 int i;
819
820 if (!nl_modes)
821 goto nla_put_failure;
822
823 i = 0;
824 while (ifmodes) {
825 if ((ifmodes & 1) && nla_put_flag(msg, i))
826 goto nla_put_failure;
827 ifmodes >>= 1;
828 i++;
829 }
830
831 nla_nest_end(msg, nl_modes);
832 return 0;
833
834 nla_put_failure:
835 return -ENOBUFS;
836 }
837
838 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
839 struct sk_buff *msg,
840 bool large)
841 {
842 struct nlattr *nl_combis;
843 int i, j;
844
845 nl_combis = nla_nest_start(msg,
846 NL80211_ATTR_INTERFACE_COMBINATIONS);
847 if (!nl_combis)
848 goto nla_put_failure;
849
850 for (i = 0; i < wiphy->n_iface_combinations; i++) {
851 const struct ieee80211_iface_combination *c;
852 struct nlattr *nl_combi, *nl_limits;
853
854 c = &wiphy->iface_combinations[i];
855
856 nl_combi = nla_nest_start(msg, i + 1);
857 if (!nl_combi)
858 goto nla_put_failure;
859
860 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
861 if (!nl_limits)
862 goto nla_put_failure;
863
864 for (j = 0; j < c->n_limits; j++) {
865 struct nlattr *nl_limit;
866
867 nl_limit = nla_nest_start(msg, j + 1);
868 if (!nl_limit)
869 goto nla_put_failure;
870 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
871 c->limits[j].max))
872 goto nla_put_failure;
873 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
874 c->limits[j].types))
875 goto nla_put_failure;
876 nla_nest_end(msg, nl_limit);
877 }
878
879 nla_nest_end(msg, nl_limits);
880
881 if (c->beacon_int_infra_match &&
882 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
883 goto nla_put_failure;
884 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
885 c->num_different_channels) ||
886 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
887 c->max_interfaces))
888 goto nla_put_failure;
889 if (large &&
890 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
891 c->radar_detect_widths))
892 goto nla_put_failure;
893
894 nla_nest_end(msg, nl_combi);
895 }
896
897 nla_nest_end(msg, nl_combis);
898
899 return 0;
900 nla_put_failure:
901 return -ENOBUFS;
902 }
903
904 #ifdef CONFIG_PM
905 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
906 struct sk_buff *msg)
907 {
908 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
909 struct nlattr *nl_tcp;
910
911 if (!tcp)
912 return 0;
913
914 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
915 if (!nl_tcp)
916 return -ENOBUFS;
917
918 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
919 tcp->data_payload_max))
920 return -ENOBUFS;
921
922 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
923 tcp->data_payload_max))
924 return -ENOBUFS;
925
926 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
927 return -ENOBUFS;
928
929 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
930 sizeof(*tcp->tok), tcp->tok))
931 return -ENOBUFS;
932
933 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
934 tcp->data_interval_max))
935 return -ENOBUFS;
936
937 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
938 tcp->wake_payload_max))
939 return -ENOBUFS;
940
941 nla_nest_end(msg, nl_tcp);
942 return 0;
943 }
944
945 static int nl80211_send_wowlan(struct sk_buff *msg,
946 struct cfg80211_registered_device *dev,
947 bool large)
948 {
949 struct nlattr *nl_wowlan;
950
951 if (!dev->wiphy.wowlan)
952 return 0;
953
954 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
955 if (!nl_wowlan)
956 return -ENOBUFS;
957
958 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
959 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
960 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
961 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
962 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
963 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
964 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
965 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
966 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
967 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
968 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
969 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
970 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
971 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
972 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
973 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
974 return -ENOBUFS;
975
976 if (dev->wiphy.wowlan->n_patterns) {
977 struct nl80211_wowlan_pattern_support pat = {
978 .max_patterns = dev->wiphy.wowlan->n_patterns,
979 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
980 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
981 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
982 };
983
984 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
985 sizeof(pat), &pat))
986 return -ENOBUFS;
987 }
988
989 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
990 return -ENOBUFS;
991
992 nla_nest_end(msg, nl_wowlan);
993
994 return 0;
995 }
996 #endif
997
998 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
999 struct ieee80211_supported_band *sband)
1000 {
1001 struct nlattr *nl_rates, *nl_rate;
1002 struct ieee80211_rate *rate;
1003 int i;
1004
1005 /* add HT info */
1006 if (sband->ht_cap.ht_supported &&
1007 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1008 sizeof(sband->ht_cap.mcs),
1009 &sband->ht_cap.mcs) ||
1010 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1011 sband->ht_cap.cap) ||
1012 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1013 sband->ht_cap.ampdu_factor) ||
1014 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1015 sband->ht_cap.ampdu_density)))
1016 return -ENOBUFS;
1017
1018 /* add VHT info */
1019 if (sband->vht_cap.vht_supported &&
1020 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1021 sizeof(sband->vht_cap.vht_mcs),
1022 &sband->vht_cap.vht_mcs) ||
1023 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1024 sband->vht_cap.cap)))
1025 return -ENOBUFS;
1026
1027 /* add bitrates */
1028 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1029 if (!nl_rates)
1030 return -ENOBUFS;
1031
1032 for (i = 0; i < sband->n_bitrates; i++) {
1033 nl_rate = nla_nest_start(msg, i);
1034 if (!nl_rate)
1035 return -ENOBUFS;
1036
1037 rate = &sband->bitrates[i];
1038 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1039 rate->bitrate))
1040 return -ENOBUFS;
1041 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1042 nla_put_flag(msg,
1043 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1044 return -ENOBUFS;
1045
1046 nla_nest_end(msg, nl_rate);
1047 }
1048
1049 nla_nest_end(msg, nl_rates);
1050
1051 return 0;
1052 }
1053
1054 static int
1055 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1056 const struct ieee80211_txrx_stypes *mgmt_stypes)
1057 {
1058 u16 stypes;
1059 struct nlattr *nl_ftypes, *nl_ifs;
1060 enum nl80211_iftype ift;
1061 int i;
1062
1063 if (!mgmt_stypes)
1064 return 0;
1065
1066 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1067 if (!nl_ifs)
1068 return -ENOBUFS;
1069
1070 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1071 nl_ftypes = nla_nest_start(msg, ift);
1072 if (!nl_ftypes)
1073 return -ENOBUFS;
1074 i = 0;
1075 stypes = mgmt_stypes[ift].tx;
1076 while (stypes) {
1077 if ((stypes & 1) &&
1078 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1079 (i << 4) | IEEE80211_FTYPE_MGMT))
1080 return -ENOBUFS;
1081 stypes >>= 1;
1082 i++;
1083 }
1084 nla_nest_end(msg, nl_ftypes);
1085 }
1086
1087 nla_nest_end(msg, nl_ifs);
1088
1089 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1090 if (!nl_ifs)
1091 return -ENOBUFS;
1092
1093 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1094 nl_ftypes = nla_nest_start(msg, ift);
1095 if (!nl_ftypes)
1096 return -ENOBUFS;
1097 i = 0;
1098 stypes = mgmt_stypes[ift].rx;
1099 while (stypes) {
1100 if ((stypes & 1) &&
1101 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1102 (i << 4) | IEEE80211_FTYPE_MGMT))
1103 return -ENOBUFS;
1104 stypes >>= 1;
1105 i++;
1106 }
1107 nla_nest_end(msg, nl_ftypes);
1108 }
1109 nla_nest_end(msg, nl_ifs);
1110
1111 return 0;
1112 }
1113
1114 struct nl80211_dump_wiphy_state {
1115 s64 filter_wiphy;
1116 long start;
1117 long split_start, band_start, chan_start;
1118 bool split;
1119 };
1120
1121 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1122 struct sk_buff *msg, u32 portid, u32 seq,
1123 int flags, struct nl80211_dump_wiphy_state *state)
1124 {
1125 void *hdr;
1126 struct nlattr *nl_bands, *nl_band;
1127 struct nlattr *nl_freqs, *nl_freq;
1128 struct nlattr *nl_cmds;
1129 enum ieee80211_band band;
1130 struct ieee80211_channel *chan;
1131 int i;
1132 const struct ieee80211_txrx_stypes *mgmt_stypes =
1133 dev->wiphy.mgmt_stypes;
1134 u32 features;
1135
1136 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1137 if (!hdr)
1138 return -ENOBUFS;
1139
1140 if (WARN_ON(!state))
1141 return -EINVAL;
1142
1143 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1144 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1145 wiphy_name(&dev->wiphy)) ||
1146 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1147 cfg80211_rdev_list_generation))
1148 goto nla_put_failure;
1149
1150 switch (state->split_start) {
1151 case 0:
1152 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1153 dev->wiphy.retry_short) ||
1154 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1155 dev->wiphy.retry_long) ||
1156 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1157 dev->wiphy.frag_threshold) ||
1158 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1159 dev->wiphy.rts_threshold) ||
1160 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1161 dev->wiphy.coverage_class) ||
1162 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1163 dev->wiphy.max_scan_ssids) ||
1164 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1165 dev->wiphy.max_sched_scan_ssids) ||
1166 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1167 dev->wiphy.max_scan_ie_len) ||
1168 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1169 dev->wiphy.max_sched_scan_ie_len) ||
1170 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1171 dev->wiphy.max_match_sets))
1172 goto nla_put_failure;
1173
1174 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1175 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1176 goto nla_put_failure;
1177 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1178 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1179 goto nla_put_failure;
1180 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1181 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1182 goto nla_put_failure;
1183 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1184 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1185 goto nla_put_failure;
1186 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1187 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1188 goto nla_put_failure;
1189 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1190 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1191 goto nla_put_failure;
1192 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1193 nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1194 goto nla_put_failure;
1195
1196 state->split_start++;
1197 if (state->split)
1198 break;
1199 case 1:
1200 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1201 sizeof(u32) * dev->wiphy.n_cipher_suites,
1202 dev->wiphy.cipher_suites))
1203 goto nla_put_failure;
1204
1205 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1206 dev->wiphy.max_num_pmkids))
1207 goto nla_put_failure;
1208
1209 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1210 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1211 goto nla_put_failure;
1212
1213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1214 dev->wiphy.available_antennas_tx) ||
1215 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1216 dev->wiphy.available_antennas_rx))
1217 goto nla_put_failure;
1218
1219 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1220 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1221 dev->wiphy.probe_resp_offload))
1222 goto nla_put_failure;
1223
1224 if ((dev->wiphy.available_antennas_tx ||
1225 dev->wiphy.available_antennas_rx) &&
1226 dev->ops->get_antenna) {
1227 u32 tx_ant = 0, rx_ant = 0;
1228 int res;
1229 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1230 if (!res) {
1231 if (nla_put_u32(msg,
1232 NL80211_ATTR_WIPHY_ANTENNA_TX,
1233 tx_ant) ||
1234 nla_put_u32(msg,
1235 NL80211_ATTR_WIPHY_ANTENNA_RX,
1236 rx_ant))
1237 goto nla_put_failure;
1238 }
1239 }
1240
1241 state->split_start++;
1242 if (state->split)
1243 break;
1244 case 2:
1245 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1246 dev->wiphy.interface_modes))
1247 goto nla_put_failure;
1248 state->split_start++;
1249 if (state->split)
1250 break;
1251 case 3:
1252 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1253 if (!nl_bands)
1254 goto nla_put_failure;
1255
1256 for (band = state->band_start;
1257 band < IEEE80211_NUM_BANDS; band++) {
1258 struct ieee80211_supported_band *sband;
1259
1260 sband = dev->wiphy.bands[band];
1261
1262 if (!sband)
1263 continue;
1264
1265 nl_band = nla_nest_start(msg, band);
1266 if (!nl_band)
1267 goto nla_put_failure;
1268
1269 switch (state->chan_start) {
1270 case 0:
1271 if (nl80211_send_band_rateinfo(msg, sband))
1272 goto nla_put_failure;
1273 state->chan_start++;
1274 if (state->split)
1275 break;
1276 default:
1277 /* add frequencies */
1278 nl_freqs = nla_nest_start(
1279 msg, NL80211_BAND_ATTR_FREQS);
1280 if (!nl_freqs)
1281 goto nla_put_failure;
1282
1283 for (i = state->chan_start - 1;
1284 i < sband->n_channels;
1285 i++) {
1286 nl_freq = nla_nest_start(msg, i);
1287 if (!nl_freq)
1288 goto nla_put_failure;
1289
1290 chan = &sband->channels[i];
1291
1292 if (nl80211_msg_put_channel(
1293 msg, chan,
1294 state->split))
1295 goto nla_put_failure;
1296
1297 nla_nest_end(msg, nl_freq);
1298 if (state->split)
1299 break;
1300 }
1301 if (i < sband->n_channels)
1302 state->chan_start = i + 2;
1303 else
1304 state->chan_start = 0;
1305 nla_nest_end(msg, nl_freqs);
1306 }
1307
1308 nla_nest_end(msg, nl_band);
1309
1310 if (state->split) {
1311 /* start again here */
1312 if (state->chan_start)
1313 band--;
1314 break;
1315 }
1316 }
1317 nla_nest_end(msg, nl_bands);
1318
1319 if (band < IEEE80211_NUM_BANDS)
1320 state->band_start = band + 1;
1321 else
1322 state->band_start = 0;
1323
1324 /* if bands & channels are done, continue outside */
1325 if (state->band_start == 0 && state->chan_start == 0)
1326 state->split_start++;
1327 if (state->split)
1328 break;
1329 case 4:
1330 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1331 if (!nl_cmds)
1332 goto nla_put_failure;
1333
1334 i = 0;
1335 #define CMD(op, n) \
1336 do { \
1337 if (dev->ops->op) { \
1338 i++; \
1339 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1340 goto nla_put_failure; \
1341 } \
1342 } while (0)
1343
1344 CMD(add_virtual_intf, NEW_INTERFACE);
1345 CMD(change_virtual_intf, SET_INTERFACE);
1346 CMD(add_key, NEW_KEY);
1347 CMD(start_ap, START_AP);
1348 CMD(add_station, NEW_STATION);
1349 CMD(add_mpath, NEW_MPATH);
1350 CMD(update_mesh_config, SET_MESH_CONFIG);
1351 CMD(change_bss, SET_BSS);
1352 CMD(auth, AUTHENTICATE);
1353 CMD(assoc, ASSOCIATE);
1354 CMD(deauth, DEAUTHENTICATE);
1355 CMD(disassoc, DISASSOCIATE);
1356 CMD(join_ibss, JOIN_IBSS);
1357 CMD(join_mesh, JOIN_MESH);
1358 CMD(set_pmksa, SET_PMKSA);
1359 CMD(del_pmksa, DEL_PMKSA);
1360 CMD(flush_pmksa, FLUSH_PMKSA);
1361 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1362 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1363 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1364 CMD(mgmt_tx, FRAME);
1365 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1366 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1367 i++;
1368 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1369 goto nla_put_failure;
1370 }
1371 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1372 dev->ops->join_mesh) {
1373 i++;
1374 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1375 goto nla_put_failure;
1376 }
1377 CMD(set_wds_peer, SET_WDS_PEER);
1378 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1379 CMD(tdls_mgmt, TDLS_MGMT);
1380 CMD(tdls_oper, TDLS_OPER);
1381 }
1382 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1383 CMD(sched_scan_start, START_SCHED_SCAN);
1384 CMD(probe_client, PROBE_CLIENT);
1385 CMD(set_noack_map, SET_NOACK_MAP);
1386 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1387 i++;
1388 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1389 goto nla_put_failure;
1390 }
1391 CMD(start_p2p_device, START_P2P_DEVICE);
1392 CMD(set_mcast_rate, SET_MCAST_RATE);
1393 if (state->split) {
1394 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1395 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1396 }
1397
1398 #ifdef CONFIG_NL80211_TESTMODE
1399 CMD(testmode_cmd, TESTMODE);
1400 #endif
1401
1402 #undef CMD
1403
1404 if (dev->ops->connect || dev->ops->auth) {
1405 i++;
1406 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1407 goto nla_put_failure;
1408 }
1409
1410 if (dev->ops->disconnect || dev->ops->deauth) {
1411 i++;
1412 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1413 goto nla_put_failure;
1414 }
1415
1416 nla_nest_end(msg, nl_cmds);
1417 state->split_start++;
1418 if (state->split)
1419 break;
1420 case 5:
1421 if (dev->ops->remain_on_channel &&
1422 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1423 nla_put_u32(msg,
1424 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1425 dev->wiphy.max_remain_on_channel_duration))
1426 goto nla_put_failure;
1427
1428 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1429 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1430 goto nla_put_failure;
1431
1432 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1433 goto nla_put_failure;
1434 state->split_start++;
1435 if (state->split)
1436 break;
1437 case 6:
1438 #ifdef CONFIG_PM
1439 if (nl80211_send_wowlan(msg, dev, state->split))
1440 goto nla_put_failure;
1441 state->split_start++;
1442 if (state->split)
1443 break;
1444 #else
1445 state->split_start++;
1446 #endif
1447 case 7:
1448 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1449 dev->wiphy.software_iftypes))
1450 goto nla_put_failure;
1451
1452 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1453 state->split))
1454 goto nla_put_failure;
1455
1456 state->split_start++;
1457 if (state->split)
1458 break;
1459 case 8:
1460 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1461 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1462 dev->wiphy.ap_sme_capa))
1463 goto nla_put_failure;
1464
1465 features = dev->wiphy.features;
1466 /*
1467 * We can only add the per-channel limit information if the
1468 * dump is split, otherwise it makes it too big. Therefore
1469 * only advertise it in that case.
1470 */
1471 if (state->split)
1472 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1473 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1474 goto nla_put_failure;
1475
1476 if (dev->wiphy.ht_capa_mod_mask &&
1477 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1478 sizeof(*dev->wiphy.ht_capa_mod_mask),
1479 dev->wiphy.ht_capa_mod_mask))
1480 goto nla_put_failure;
1481
1482 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1483 dev->wiphy.max_acl_mac_addrs &&
1484 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1485 dev->wiphy.max_acl_mac_addrs))
1486 goto nla_put_failure;
1487
1488 /*
1489 * Any information below this point is only available to
1490 * applications that can deal with it being split. This
1491 * helps ensure that newly added capabilities don't break
1492 * older tools by overrunning their buffers.
1493 *
1494 * We still increment split_start so that in the split
1495 * case we'll continue with more data in the next round,
1496 * but break unconditionally so unsplit data stops here.
1497 */
1498 state->split_start++;
1499 break;
1500 case 9:
1501 if (dev->wiphy.extended_capabilities &&
1502 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1503 dev->wiphy.extended_capabilities_len,
1504 dev->wiphy.extended_capabilities) ||
1505 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1506 dev->wiphy.extended_capabilities_len,
1507 dev->wiphy.extended_capabilities_mask)))
1508 goto nla_put_failure;
1509
1510 if (dev->wiphy.vht_capa_mod_mask &&
1511 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1512 sizeof(*dev->wiphy.vht_capa_mod_mask),
1513 dev->wiphy.vht_capa_mod_mask))
1514 goto nla_put_failure;
1515
1516 /* done */
1517 state->split_start = 0;
1518 break;
1519 }
1520 return genlmsg_end(msg, hdr);
1521
1522 nla_put_failure:
1523 genlmsg_cancel(msg, hdr);
1524 return -EMSGSIZE;
1525 }
1526
1527 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1528 struct netlink_callback *cb,
1529 struct nl80211_dump_wiphy_state *state)
1530 {
1531 struct nlattr **tb = nl80211_fam.attrbuf;
1532 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1533 tb, nl80211_fam.maxattr, nl80211_policy);
1534 /* ignore parse errors for backward compatibility */
1535 if (ret)
1536 return 0;
1537
1538 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1539 if (tb[NL80211_ATTR_WIPHY])
1540 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1541 if (tb[NL80211_ATTR_WDEV])
1542 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1543 if (tb[NL80211_ATTR_IFINDEX]) {
1544 struct net_device *netdev;
1545 struct cfg80211_registered_device *rdev;
1546 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1547
1548 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1549 if (!netdev)
1550 return -ENODEV;
1551 if (netdev->ieee80211_ptr) {
1552 rdev = wiphy_to_dev(
1553 netdev->ieee80211_ptr->wiphy);
1554 state->filter_wiphy = rdev->wiphy_idx;
1555 }
1556 dev_put(netdev);
1557 }
1558
1559 return 0;
1560 }
1561
1562 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1563 {
1564 int idx = 0, ret;
1565 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1566 struct cfg80211_registered_device *dev;
1567
1568 rtnl_lock();
1569 if (!state) {
1570 state = kzalloc(sizeof(*state), GFP_KERNEL);
1571 if (!state) {
1572 rtnl_unlock();
1573 return -ENOMEM;
1574 }
1575 state->filter_wiphy = -1;
1576 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1577 if (ret) {
1578 kfree(state);
1579 rtnl_unlock();
1580 return ret;
1581 }
1582 cb->args[0] = (long)state;
1583 }
1584
1585 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1586 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1587 continue;
1588 if (++idx <= state->start)
1589 continue;
1590 if (state->filter_wiphy != -1 &&
1591 state->filter_wiphy != dev->wiphy_idx)
1592 continue;
1593 /* attempt to fit multiple wiphy data chunks into the skb */
1594 do {
1595 ret = nl80211_send_wiphy(dev, skb,
1596 NETLINK_CB(cb->skb).portid,
1597 cb->nlh->nlmsg_seq,
1598 NLM_F_MULTI, state);
1599 if (ret < 0) {
1600 /*
1601 * If sending the wiphy data didn't fit (ENOBUFS
1602 * or EMSGSIZE returned), this SKB is still
1603 * empty (so it's not too big because another
1604 * wiphy dataset is already in the skb) and
1605 * we've not tried to adjust the dump allocation
1606 * yet ... then adjust the alloc size to be
1607 * bigger, and return 1 but with the empty skb.
1608 * This results in an empty message being RX'ed
1609 * in userspace, but that is ignored.
1610 *
1611 * We can then retry with the larger buffer.
1612 */
1613 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1614 !skb->len &&
1615 cb->min_dump_alloc < 4096) {
1616 cb->min_dump_alloc = 4096;
1617 rtnl_unlock();
1618 return 1;
1619 }
1620 idx--;
1621 break;
1622 }
1623 } while (state->split_start > 0);
1624 break;
1625 }
1626 rtnl_unlock();
1627
1628 state->start = idx;
1629
1630 return skb->len;
1631 }
1632
1633 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1634 {
1635 kfree((void *)cb->args[0]);
1636 return 0;
1637 }
1638
1639 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1640 {
1641 struct sk_buff *msg;
1642 struct cfg80211_registered_device *dev = info->user_ptr[0];
1643 struct nl80211_dump_wiphy_state state = {};
1644
1645 msg = nlmsg_new(4096, GFP_KERNEL);
1646 if (!msg)
1647 return -ENOMEM;
1648
1649 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1650 &state) < 0) {
1651 nlmsg_free(msg);
1652 return -ENOBUFS;
1653 }
1654
1655 return genlmsg_reply(msg, info);
1656 }
1657
1658 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1659 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1660 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1661 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1662 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1663 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1664 };
1665
1666 static int parse_txq_params(struct nlattr *tb[],
1667 struct ieee80211_txq_params *txq_params)
1668 {
1669 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1670 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1671 !tb[NL80211_TXQ_ATTR_AIFS])
1672 return -EINVAL;
1673
1674 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1675 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1676 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1677 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1678 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1679
1680 if (txq_params->ac >= NL80211_NUM_ACS)
1681 return -EINVAL;
1682
1683 return 0;
1684 }
1685
1686 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1687 {
1688 /*
1689 * You can only set the channel explicitly for WDS interfaces,
1690 * all others have their channel managed via their respective
1691 * "establish a connection" command (connect, join, ...)
1692 *
1693 * For AP/GO and mesh mode, the channel can be set with the
1694 * channel userspace API, but is only stored and passed to the
1695 * low-level driver when the AP starts or the mesh is joined.
1696 * This is for backward compatibility, userspace can also give
1697 * the channel in the start-ap or join-mesh commands instead.
1698 *
1699 * Monitors are special as they are normally slaved to
1700 * whatever else is going on, so they have their own special
1701 * operation to set the monitor channel if possible.
1702 */
1703 return !wdev ||
1704 wdev->iftype == NL80211_IFTYPE_AP ||
1705 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1706 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1707 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1708 }
1709
1710 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1711 struct genl_info *info,
1712 struct cfg80211_chan_def *chandef)
1713 {
1714 u32 control_freq;
1715
1716 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1717 return -EINVAL;
1718
1719 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1720
1721 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1722 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1723 chandef->center_freq1 = control_freq;
1724 chandef->center_freq2 = 0;
1725
1726 /* Primary channel not allowed */
1727 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1728 return -EINVAL;
1729
1730 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1731 enum nl80211_channel_type chantype;
1732
1733 chantype = nla_get_u32(
1734 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1735
1736 switch (chantype) {
1737 case NL80211_CHAN_NO_HT:
1738 case NL80211_CHAN_HT20:
1739 case NL80211_CHAN_HT40PLUS:
1740 case NL80211_CHAN_HT40MINUS:
1741 cfg80211_chandef_create(chandef, chandef->chan,
1742 chantype);
1743 break;
1744 default:
1745 return -EINVAL;
1746 }
1747 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1748 chandef->width =
1749 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1750 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1751 chandef->center_freq1 =
1752 nla_get_u32(
1753 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1754 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1755 chandef->center_freq2 =
1756 nla_get_u32(
1757 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1758 }
1759
1760 if (!cfg80211_chandef_valid(chandef))
1761 return -EINVAL;
1762
1763 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1764 IEEE80211_CHAN_DISABLED))
1765 return -EINVAL;
1766
1767 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1768 chandef->width == NL80211_CHAN_WIDTH_10) &&
1769 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1770 return -EINVAL;
1771
1772 return 0;
1773 }
1774
1775 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1776 struct wireless_dev *wdev,
1777 struct genl_info *info)
1778 {
1779 struct cfg80211_chan_def chandef;
1780 int result;
1781 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1782
1783 if (wdev)
1784 iftype = wdev->iftype;
1785
1786 if (!nl80211_can_set_dev_channel(wdev))
1787 return -EOPNOTSUPP;
1788
1789 result = nl80211_parse_chandef(rdev, info, &chandef);
1790 if (result)
1791 return result;
1792
1793 switch (iftype) {
1794 case NL80211_IFTYPE_AP:
1795 case NL80211_IFTYPE_P2P_GO:
1796 if (wdev->beacon_interval) {
1797 result = -EBUSY;
1798 break;
1799 }
1800 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1801 result = -EINVAL;
1802 break;
1803 }
1804 wdev->preset_chandef = chandef;
1805 result = 0;
1806 break;
1807 case NL80211_IFTYPE_MESH_POINT:
1808 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1809 break;
1810 case NL80211_IFTYPE_MONITOR:
1811 result = cfg80211_set_monitor_channel(rdev, &chandef);
1812 break;
1813 default:
1814 result = -EINVAL;
1815 }
1816
1817 return result;
1818 }
1819
1820 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1823 struct net_device *netdev = info->user_ptr[1];
1824
1825 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1826 }
1827
1828 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1829 {
1830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1831 struct net_device *dev = info->user_ptr[1];
1832 struct wireless_dev *wdev = dev->ieee80211_ptr;
1833 const u8 *bssid;
1834
1835 if (!info->attrs[NL80211_ATTR_MAC])
1836 return -EINVAL;
1837
1838 if (netif_running(dev))
1839 return -EBUSY;
1840
1841 if (!rdev->ops->set_wds_peer)
1842 return -EOPNOTSUPP;
1843
1844 if (wdev->iftype != NL80211_IFTYPE_WDS)
1845 return -EOPNOTSUPP;
1846
1847 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1848 return rdev_set_wds_peer(rdev, dev, bssid);
1849 }
1850
1851
1852 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1853 {
1854 struct cfg80211_registered_device *rdev;
1855 struct net_device *netdev = NULL;
1856 struct wireless_dev *wdev;
1857 int result = 0, rem_txq_params = 0;
1858 struct nlattr *nl_txq_params;
1859 u32 changed;
1860 u8 retry_short = 0, retry_long = 0;
1861 u32 frag_threshold = 0, rts_threshold = 0;
1862 u8 coverage_class = 0;
1863
1864 ASSERT_RTNL();
1865
1866 /*
1867 * Try to find the wiphy and netdev. Normally this
1868 * function shouldn't need the netdev, but this is
1869 * done for backward compatibility -- previously
1870 * setting the channel was done per wiphy, but now
1871 * it is per netdev. Previous userland like hostapd
1872 * also passed a netdev to set_wiphy, so that it is
1873 * possible to let that go to the right netdev!
1874 */
1875
1876 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1877 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1878
1879 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1880 if (netdev && netdev->ieee80211_ptr)
1881 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1882 else
1883 netdev = NULL;
1884 }
1885
1886 if (!netdev) {
1887 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1888 info->attrs);
1889 if (IS_ERR(rdev))
1890 return PTR_ERR(rdev);
1891 wdev = NULL;
1892 netdev = NULL;
1893 result = 0;
1894 } else
1895 wdev = netdev->ieee80211_ptr;
1896
1897 /*
1898 * end workaround code, by now the rdev is available
1899 * and locked, and wdev may or may not be NULL.
1900 */
1901
1902 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1903 result = cfg80211_dev_rename(
1904 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1905
1906 if (result)
1907 goto bad_res;
1908
1909 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1910 struct ieee80211_txq_params txq_params;
1911 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1912
1913 if (!rdev->ops->set_txq_params) {
1914 result = -EOPNOTSUPP;
1915 goto bad_res;
1916 }
1917
1918 if (!netdev) {
1919 result = -EINVAL;
1920 goto bad_res;
1921 }
1922
1923 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1924 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1925 result = -EINVAL;
1926 goto bad_res;
1927 }
1928
1929 if (!netif_running(netdev)) {
1930 result = -ENETDOWN;
1931 goto bad_res;
1932 }
1933
1934 nla_for_each_nested(nl_txq_params,
1935 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1936 rem_txq_params) {
1937 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1938 nla_data(nl_txq_params),
1939 nla_len(nl_txq_params),
1940 txq_params_policy);
1941 result = parse_txq_params(tb, &txq_params);
1942 if (result)
1943 goto bad_res;
1944
1945 result = rdev_set_txq_params(rdev, netdev,
1946 &txq_params);
1947 if (result)
1948 goto bad_res;
1949 }
1950 }
1951
1952 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1953 result = __nl80211_set_channel(rdev,
1954 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1955 info);
1956 if (result)
1957 goto bad_res;
1958 }
1959
1960 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1961 struct wireless_dev *txp_wdev = wdev;
1962 enum nl80211_tx_power_setting type;
1963 int idx, mbm = 0;
1964
1965 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1966 txp_wdev = NULL;
1967
1968 if (!rdev->ops->set_tx_power) {
1969 result = -EOPNOTSUPP;
1970 goto bad_res;
1971 }
1972
1973 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1974 type = nla_get_u32(info->attrs[idx]);
1975
1976 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1977 (type != NL80211_TX_POWER_AUTOMATIC)) {
1978 result = -EINVAL;
1979 goto bad_res;
1980 }
1981
1982 if (type != NL80211_TX_POWER_AUTOMATIC) {
1983 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1984 mbm = nla_get_u32(info->attrs[idx]);
1985 }
1986
1987 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1988 if (result)
1989 goto bad_res;
1990 }
1991
1992 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1993 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1994 u32 tx_ant, rx_ant;
1995 if ((!rdev->wiphy.available_antennas_tx &&
1996 !rdev->wiphy.available_antennas_rx) ||
1997 !rdev->ops->set_antenna) {
1998 result = -EOPNOTSUPP;
1999 goto bad_res;
2000 }
2001
2002 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2003 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2004
2005 /* reject antenna configurations which don't match the
2006 * available antenna masks, except for the "all" mask */
2007 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2008 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2009 result = -EINVAL;
2010 goto bad_res;
2011 }
2012
2013 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2014 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2015
2016 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2017 if (result)
2018 goto bad_res;
2019 }
2020
2021 changed = 0;
2022
2023 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2024 retry_short = nla_get_u8(
2025 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2026 if (retry_short == 0) {
2027 result = -EINVAL;
2028 goto bad_res;
2029 }
2030 changed |= WIPHY_PARAM_RETRY_SHORT;
2031 }
2032
2033 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2034 retry_long = nla_get_u8(
2035 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2036 if (retry_long == 0) {
2037 result = -EINVAL;
2038 goto bad_res;
2039 }
2040 changed |= WIPHY_PARAM_RETRY_LONG;
2041 }
2042
2043 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2044 frag_threshold = nla_get_u32(
2045 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2046 if (frag_threshold < 256) {
2047 result = -EINVAL;
2048 goto bad_res;
2049 }
2050 if (frag_threshold != (u32) -1) {
2051 /*
2052 * Fragments (apart from the last one) are required to
2053 * have even length. Make the fragmentation code
2054 * simpler by stripping LSB should someone try to use
2055 * odd threshold value.
2056 */
2057 frag_threshold &= ~0x1;
2058 }
2059 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2060 }
2061
2062 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2063 rts_threshold = nla_get_u32(
2064 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2065 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2066 }
2067
2068 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2069 coverage_class = nla_get_u8(
2070 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2071 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2072 }
2073
2074 if (changed) {
2075 u8 old_retry_short, old_retry_long;
2076 u32 old_frag_threshold, old_rts_threshold;
2077 u8 old_coverage_class;
2078
2079 if (!rdev->ops->set_wiphy_params) {
2080 result = -EOPNOTSUPP;
2081 goto bad_res;
2082 }
2083
2084 old_retry_short = rdev->wiphy.retry_short;
2085 old_retry_long = rdev->wiphy.retry_long;
2086 old_frag_threshold = rdev->wiphy.frag_threshold;
2087 old_rts_threshold = rdev->wiphy.rts_threshold;
2088 old_coverage_class = rdev->wiphy.coverage_class;
2089
2090 if (changed & WIPHY_PARAM_RETRY_SHORT)
2091 rdev->wiphy.retry_short = retry_short;
2092 if (changed & WIPHY_PARAM_RETRY_LONG)
2093 rdev->wiphy.retry_long = retry_long;
2094 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2095 rdev->wiphy.frag_threshold = frag_threshold;
2096 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2097 rdev->wiphy.rts_threshold = rts_threshold;
2098 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2099 rdev->wiphy.coverage_class = coverage_class;
2100
2101 result = rdev_set_wiphy_params(rdev, changed);
2102 if (result) {
2103 rdev->wiphy.retry_short = old_retry_short;
2104 rdev->wiphy.retry_long = old_retry_long;
2105 rdev->wiphy.frag_threshold = old_frag_threshold;
2106 rdev->wiphy.rts_threshold = old_rts_threshold;
2107 rdev->wiphy.coverage_class = old_coverage_class;
2108 }
2109 }
2110
2111 bad_res:
2112 if (netdev)
2113 dev_put(netdev);
2114 return result;
2115 }
2116
2117 static inline u64 wdev_id(struct wireless_dev *wdev)
2118 {
2119 return (u64)wdev->identifier |
2120 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2121 }
2122
2123 static int nl80211_send_chandef(struct sk_buff *msg,
2124 struct cfg80211_chan_def *chandef)
2125 {
2126 WARN_ON(!cfg80211_chandef_valid(chandef));
2127
2128 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2129 chandef->chan->center_freq))
2130 return -ENOBUFS;
2131 switch (chandef->width) {
2132 case NL80211_CHAN_WIDTH_20_NOHT:
2133 case NL80211_CHAN_WIDTH_20:
2134 case NL80211_CHAN_WIDTH_40:
2135 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2136 cfg80211_get_chandef_type(chandef)))
2137 return -ENOBUFS;
2138 break;
2139 default:
2140 break;
2141 }
2142 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2143 return -ENOBUFS;
2144 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2145 return -ENOBUFS;
2146 if (chandef->center_freq2 &&
2147 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2148 return -ENOBUFS;
2149 return 0;
2150 }
2151
2152 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2153 struct cfg80211_registered_device *rdev,
2154 struct wireless_dev *wdev)
2155 {
2156 struct net_device *dev = wdev->netdev;
2157 void *hdr;
2158
2159 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2160 if (!hdr)
2161 return -1;
2162
2163 if (dev &&
2164 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2165 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2166 goto nla_put_failure;
2167
2168 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2169 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2170 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2171 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2172 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2173 rdev->devlist_generation ^
2174 (cfg80211_rdev_list_generation << 2)))
2175 goto nla_put_failure;
2176
2177 if (rdev->ops->get_channel) {
2178 int ret;
2179 struct cfg80211_chan_def chandef;
2180
2181 ret = rdev_get_channel(rdev, wdev, &chandef);
2182 if (ret == 0) {
2183 if (nl80211_send_chandef(msg, &chandef))
2184 goto nla_put_failure;
2185 }
2186 }
2187
2188 if (wdev->ssid_len) {
2189 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2190 goto nla_put_failure;
2191 }
2192
2193 return genlmsg_end(msg, hdr);
2194
2195 nla_put_failure:
2196 genlmsg_cancel(msg, hdr);
2197 return -EMSGSIZE;
2198 }
2199
2200 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2201 {
2202 int wp_idx = 0;
2203 int if_idx = 0;
2204 int wp_start = cb->args[0];
2205 int if_start = cb->args[1];
2206 struct cfg80211_registered_device *rdev;
2207 struct wireless_dev *wdev;
2208
2209 rtnl_lock();
2210 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2211 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2212 continue;
2213 if (wp_idx < wp_start) {
2214 wp_idx++;
2215 continue;
2216 }
2217 if_idx = 0;
2218
2219 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2220 if (if_idx < if_start) {
2221 if_idx++;
2222 continue;
2223 }
2224 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2225 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2226 rdev, wdev) < 0) {
2227 goto out;
2228 }
2229 if_idx++;
2230 }
2231
2232 wp_idx++;
2233 }
2234 out:
2235 rtnl_unlock();
2236
2237 cb->args[0] = wp_idx;
2238 cb->args[1] = if_idx;
2239
2240 return skb->len;
2241 }
2242
2243 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2244 {
2245 struct sk_buff *msg;
2246 struct cfg80211_registered_device *dev = info->user_ptr[0];
2247 struct wireless_dev *wdev = info->user_ptr[1];
2248
2249 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2250 if (!msg)
2251 return -ENOMEM;
2252
2253 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2254 dev, wdev) < 0) {
2255 nlmsg_free(msg);
2256 return -ENOBUFS;
2257 }
2258
2259 return genlmsg_reply(msg, info);
2260 }
2261
2262 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2263 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2264 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2265 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2266 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2267 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2268 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2269 };
2270
2271 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2272 {
2273 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2274 int flag;
2275
2276 *mntrflags = 0;
2277
2278 if (!nla)
2279 return -EINVAL;
2280
2281 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2282 nla, mntr_flags_policy))
2283 return -EINVAL;
2284
2285 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2286 if (flags[flag])
2287 *mntrflags |= (1<<flag);
2288
2289 return 0;
2290 }
2291
2292 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2293 struct net_device *netdev, u8 use_4addr,
2294 enum nl80211_iftype iftype)
2295 {
2296 if (!use_4addr) {
2297 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2298 return -EBUSY;
2299 return 0;
2300 }
2301
2302 switch (iftype) {
2303 case NL80211_IFTYPE_AP_VLAN:
2304 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2305 return 0;
2306 break;
2307 case NL80211_IFTYPE_STATION:
2308 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2309 return 0;
2310 break;
2311 default:
2312 break;
2313 }
2314
2315 return -EOPNOTSUPP;
2316 }
2317
2318 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2319 {
2320 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2321 struct vif_params params;
2322 int err;
2323 enum nl80211_iftype otype, ntype;
2324 struct net_device *dev = info->user_ptr[1];
2325 u32 _flags, *flags = NULL;
2326 bool change = false;
2327
2328 memset(&params, 0, sizeof(params));
2329
2330 otype = ntype = dev->ieee80211_ptr->iftype;
2331
2332 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2333 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2334 if (otype != ntype)
2335 change = true;
2336 if (ntype > NL80211_IFTYPE_MAX)
2337 return -EINVAL;
2338 }
2339
2340 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2341 struct wireless_dev *wdev = dev->ieee80211_ptr;
2342
2343 if (ntype != NL80211_IFTYPE_MESH_POINT)
2344 return -EINVAL;
2345 if (netif_running(dev))
2346 return -EBUSY;
2347
2348 wdev_lock(wdev);
2349 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2350 IEEE80211_MAX_MESH_ID_LEN);
2351 wdev->mesh_id_up_len =
2352 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2353 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2354 wdev->mesh_id_up_len);
2355 wdev_unlock(wdev);
2356 }
2357
2358 if (info->attrs[NL80211_ATTR_4ADDR]) {
2359 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2360 change = true;
2361 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2362 if (err)
2363 return err;
2364 } else {
2365 params.use_4addr = -1;
2366 }
2367
2368 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2369 if (ntype != NL80211_IFTYPE_MONITOR)
2370 return -EINVAL;
2371 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2372 &_flags);
2373 if (err)
2374 return err;
2375
2376 flags = &_flags;
2377 change = true;
2378 }
2379
2380 if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2381 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2382 return -EOPNOTSUPP;
2383
2384 if (change)
2385 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2386 else
2387 err = 0;
2388
2389 if (!err && params.use_4addr != -1)
2390 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2391
2392 return err;
2393 }
2394
2395 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2396 {
2397 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2398 struct vif_params params;
2399 struct wireless_dev *wdev;
2400 struct sk_buff *msg;
2401 int err;
2402 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2403 u32 flags;
2404
2405 memset(&params, 0, sizeof(params));
2406
2407 if (!info->attrs[NL80211_ATTR_IFNAME])
2408 return -EINVAL;
2409
2410 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2411 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2412 if (type > NL80211_IFTYPE_MAX)
2413 return -EINVAL;
2414 }
2415
2416 if (!rdev->ops->add_virtual_intf ||
2417 !(rdev->wiphy.interface_modes & (1 << type)))
2418 return -EOPNOTSUPP;
2419
2420 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2421 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2422 ETH_ALEN);
2423 if (!is_valid_ether_addr(params.macaddr))
2424 return -EADDRNOTAVAIL;
2425 }
2426
2427 if (info->attrs[NL80211_ATTR_4ADDR]) {
2428 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2429 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2430 if (err)
2431 return err;
2432 }
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2439 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2440 &flags);
2441
2442 if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2443 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2444 return -EOPNOTSUPP;
2445
2446 wdev = rdev_add_virtual_intf(rdev,
2447 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2448 type, err ? NULL : &flags, &params);
2449 if (IS_ERR(wdev)) {
2450 nlmsg_free(msg);
2451 return PTR_ERR(wdev);
2452 }
2453
2454 switch (type) {
2455 case NL80211_IFTYPE_MESH_POINT:
2456 if (!info->attrs[NL80211_ATTR_MESH_ID])
2457 break;
2458 wdev_lock(wdev);
2459 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2460 IEEE80211_MAX_MESH_ID_LEN);
2461 wdev->mesh_id_up_len =
2462 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2463 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2464 wdev->mesh_id_up_len);
2465 wdev_unlock(wdev);
2466 break;
2467 case NL80211_IFTYPE_P2P_DEVICE:
2468 /*
2469 * P2P Device doesn't have a netdev, so doesn't go
2470 * through the netdev notifier and must be added here
2471 */
2472 mutex_init(&wdev->mtx);
2473 INIT_LIST_HEAD(&wdev->event_list);
2474 spin_lock_init(&wdev->event_lock);
2475 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2476 spin_lock_init(&wdev->mgmt_registrations_lock);
2477
2478 wdev->identifier = ++rdev->wdev_id;
2479 list_add_rcu(&wdev->list, &rdev->wdev_list);
2480 rdev->devlist_generation++;
2481 break;
2482 default:
2483 break;
2484 }
2485
2486 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2487 rdev, wdev) < 0) {
2488 nlmsg_free(msg);
2489 return -ENOBUFS;
2490 }
2491
2492 return genlmsg_reply(msg, info);
2493 }
2494
2495 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2496 {
2497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2498 struct wireless_dev *wdev = info->user_ptr[1];
2499
2500 if (!rdev->ops->del_virtual_intf)
2501 return -EOPNOTSUPP;
2502
2503 /*
2504 * If we remove a wireless device without a netdev then clear
2505 * user_ptr[1] so that nl80211_post_doit won't dereference it
2506 * to check if it needs to do dev_put(). Otherwise it crashes
2507 * since the wdev has been freed, unlike with a netdev where
2508 * we need the dev_put() for the netdev to really be freed.
2509 */
2510 if (!wdev->netdev)
2511 info->user_ptr[1] = NULL;
2512
2513 return rdev_del_virtual_intf(rdev, wdev);
2514 }
2515
2516 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2517 {
2518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2519 struct net_device *dev = info->user_ptr[1];
2520 u16 noack_map;
2521
2522 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2523 return -EINVAL;
2524
2525 if (!rdev->ops->set_noack_map)
2526 return -EOPNOTSUPP;
2527
2528 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2529
2530 return rdev_set_noack_map(rdev, dev, noack_map);
2531 }
2532
2533 struct get_key_cookie {
2534 struct sk_buff *msg;
2535 int error;
2536 int idx;
2537 };
2538
2539 static void get_key_callback(void *c, struct key_params *params)
2540 {
2541 struct nlattr *key;
2542 struct get_key_cookie *cookie = c;
2543
2544 if ((params->key &&
2545 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2546 params->key_len, params->key)) ||
2547 (params->seq &&
2548 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2549 params->seq_len, params->seq)) ||
2550 (params->cipher &&
2551 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2552 params->cipher)))
2553 goto nla_put_failure;
2554
2555 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2556 if (!key)
2557 goto nla_put_failure;
2558
2559 if ((params->key &&
2560 nla_put(cookie->msg, NL80211_KEY_DATA,
2561 params->key_len, params->key)) ||
2562 (params->seq &&
2563 nla_put(cookie->msg, NL80211_KEY_SEQ,
2564 params->seq_len, params->seq)) ||
2565 (params->cipher &&
2566 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2567 params->cipher)))
2568 goto nla_put_failure;
2569
2570 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2571 goto nla_put_failure;
2572
2573 nla_nest_end(cookie->msg, key);
2574
2575 return;
2576 nla_put_failure:
2577 cookie->error = 1;
2578 }
2579
2580 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2581 {
2582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583 int err;
2584 struct net_device *dev = info->user_ptr[1];
2585 u8 key_idx = 0;
2586 const u8 *mac_addr = NULL;
2587 bool pairwise;
2588 struct get_key_cookie cookie = {
2589 .error = 0,
2590 };
2591 void *hdr;
2592 struct sk_buff *msg;
2593
2594 if (info->attrs[NL80211_ATTR_KEY_IDX])
2595 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2596
2597 if (key_idx > 5)
2598 return -EINVAL;
2599
2600 if (info->attrs[NL80211_ATTR_MAC])
2601 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2602
2603 pairwise = !!mac_addr;
2604 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2605 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2606 if (kt >= NUM_NL80211_KEYTYPES)
2607 return -EINVAL;
2608 if (kt != NL80211_KEYTYPE_GROUP &&
2609 kt != NL80211_KEYTYPE_PAIRWISE)
2610 return -EINVAL;
2611 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2612 }
2613
2614 if (!rdev->ops->get_key)
2615 return -EOPNOTSUPP;
2616
2617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2618 if (!msg)
2619 return -ENOMEM;
2620
2621 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2622 NL80211_CMD_NEW_KEY);
2623 if (IS_ERR(hdr))
2624 return PTR_ERR(hdr);
2625
2626 cookie.msg = msg;
2627 cookie.idx = key_idx;
2628
2629 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2630 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2631 goto nla_put_failure;
2632 if (mac_addr &&
2633 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2634 goto nla_put_failure;
2635
2636 if (pairwise && mac_addr &&
2637 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2638 return -ENOENT;
2639
2640 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2641 get_key_callback);
2642
2643 if (err)
2644 goto free_msg;
2645
2646 if (cookie.error)
2647 goto nla_put_failure;
2648
2649 genlmsg_end(msg, hdr);
2650 return genlmsg_reply(msg, info);
2651
2652 nla_put_failure:
2653 err = -ENOBUFS;
2654 free_msg:
2655 nlmsg_free(msg);
2656 return err;
2657 }
2658
2659 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2660 {
2661 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2662 struct key_parse key;
2663 int err;
2664 struct net_device *dev = info->user_ptr[1];
2665
2666 err = nl80211_parse_key(info, &key);
2667 if (err)
2668 return err;
2669
2670 if (key.idx < 0)
2671 return -EINVAL;
2672
2673 /* only support setting default key */
2674 if (!key.def && !key.defmgmt)
2675 return -EINVAL;
2676
2677 wdev_lock(dev->ieee80211_ptr);
2678
2679 if (key.def) {
2680 if (!rdev->ops->set_default_key) {
2681 err = -EOPNOTSUPP;
2682 goto out;
2683 }
2684
2685 err = nl80211_key_allowed(dev->ieee80211_ptr);
2686 if (err)
2687 goto out;
2688
2689 err = rdev_set_default_key(rdev, dev, key.idx,
2690 key.def_uni, key.def_multi);
2691
2692 if (err)
2693 goto out;
2694
2695 #ifdef CONFIG_CFG80211_WEXT
2696 dev->ieee80211_ptr->wext.default_key = key.idx;
2697 #endif
2698 } else {
2699 if (key.def_uni || !key.def_multi) {
2700 err = -EINVAL;
2701 goto out;
2702 }
2703
2704 if (!rdev->ops->set_default_mgmt_key) {
2705 err = -EOPNOTSUPP;
2706 goto out;
2707 }
2708
2709 err = nl80211_key_allowed(dev->ieee80211_ptr);
2710 if (err)
2711 goto out;
2712
2713 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2714 if (err)
2715 goto out;
2716
2717 #ifdef CONFIG_CFG80211_WEXT
2718 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2719 #endif
2720 }
2721
2722 out:
2723 wdev_unlock(dev->ieee80211_ptr);
2724
2725 return err;
2726 }
2727
2728 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2729 {
2730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2731 int err;
2732 struct net_device *dev = info->user_ptr[1];
2733 struct key_parse key;
2734 const u8 *mac_addr = NULL;
2735
2736 err = nl80211_parse_key(info, &key);
2737 if (err)
2738 return err;
2739
2740 if (!key.p.key)
2741 return -EINVAL;
2742
2743 if (info->attrs[NL80211_ATTR_MAC])
2744 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2745
2746 if (key.type == -1) {
2747 if (mac_addr)
2748 key.type = NL80211_KEYTYPE_PAIRWISE;
2749 else
2750 key.type = NL80211_KEYTYPE_GROUP;
2751 }
2752
2753 /* for now */
2754 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2755 key.type != NL80211_KEYTYPE_GROUP)
2756 return -EINVAL;
2757
2758 if (!rdev->ops->add_key)
2759 return -EOPNOTSUPP;
2760
2761 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2762 key.type == NL80211_KEYTYPE_PAIRWISE,
2763 mac_addr))
2764 return -EINVAL;
2765
2766 wdev_lock(dev->ieee80211_ptr);
2767 err = nl80211_key_allowed(dev->ieee80211_ptr);
2768 if (!err)
2769 err = rdev_add_key(rdev, dev, key.idx,
2770 key.type == NL80211_KEYTYPE_PAIRWISE,
2771 mac_addr, &key.p);
2772 wdev_unlock(dev->ieee80211_ptr);
2773
2774 return err;
2775 }
2776
2777 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2778 {
2779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2780 int err;
2781 struct net_device *dev = info->user_ptr[1];
2782 u8 *mac_addr = NULL;
2783 struct key_parse key;
2784
2785 err = nl80211_parse_key(info, &key);
2786 if (err)
2787 return err;
2788
2789 if (info->attrs[NL80211_ATTR_MAC])
2790 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2791
2792 if (key.type == -1) {
2793 if (mac_addr)
2794 key.type = NL80211_KEYTYPE_PAIRWISE;
2795 else
2796 key.type = NL80211_KEYTYPE_GROUP;
2797 }
2798
2799 /* for now */
2800 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2801 key.type != NL80211_KEYTYPE_GROUP)
2802 return -EINVAL;
2803
2804 if (!rdev->ops->del_key)
2805 return -EOPNOTSUPP;
2806
2807 wdev_lock(dev->ieee80211_ptr);
2808 err = nl80211_key_allowed(dev->ieee80211_ptr);
2809
2810 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2811 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2812 err = -ENOENT;
2813
2814 if (!err)
2815 err = rdev_del_key(rdev, dev, key.idx,
2816 key.type == NL80211_KEYTYPE_PAIRWISE,
2817 mac_addr);
2818
2819 #ifdef CONFIG_CFG80211_WEXT
2820 if (!err) {
2821 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2822 dev->ieee80211_ptr->wext.default_key = -1;
2823 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2824 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2825 }
2826 #endif
2827 wdev_unlock(dev->ieee80211_ptr);
2828
2829 return err;
2830 }
2831
2832 /* This function returns an error or the number of nested attributes */
2833 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2834 {
2835 struct nlattr *attr;
2836 int n_entries = 0, tmp;
2837
2838 nla_for_each_nested(attr, nl_attr, tmp) {
2839 if (nla_len(attr) != ETH_ALEN)
2840 return -EINVAL;
2841
2842 n_entries++;
2843 }
2844
2845 return n_entries;
2846 }
2847
2848 /*
2849 * This function parses ACL information and allocates memory for ACL data.
2850 * On successful return, the calling function is responsible to free the
2851 * ACL buffer returned by this function.
2852 */
2853 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2854 struct genl_info *info)
2855 {
2856 enum nl80211_acl_policy acl_policy;
2857 struct nlattr *attr;
2858 struct cfg80211_acl_data *acl;
2859 int i = 0, n_entries, tmp;
2860
2861 if (!wiphy->max_acl_mac_addrs)
2862 return ERR_PTR(-EOPNOTSUPP);
2863
2864 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2865 return ERR_PTR(-EINVAL);
2866
2867 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2868 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2869 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2870 return ERR_PTR(-EINVAL);
2871
2872 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2873 return ERR_PTR(-EINVAL);
2874
2875 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2876 if (n_entries < 0)
2877 return ERR_PTR(n_entries);
2878
2879 if (n_entries > wiphy->max_acl_mac_addrs)
2880 return ERR_PTR(-ENOTSUPP);
2881
2882 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2883 GFP_KERNEL);
2884 if (!acl)
2885 return ERR_PTR(-ENOMEM);
2886
2887 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2888 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2889 i++;
2890 }
2891
2892 acl->n_acl_entries = n_entries;
2893 acl->acl_policy = acl_policy;
2894
2895 return acl;
2896 }
2897
2898 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2899 {
2900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901 struct net_device *dev = info->user_ptr[1];
2902 struct cfg80211_acl_data *acl;
2903 int err;
2904
2905 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2906 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2907 return -EOPNOTSUPP;
2908
2909 if (!dev->ieee80211_ptr->beacon_interval)
2910 return -EINVAL;
2911
2912 acl = parse_acl_data(&rdev->wiphy, info);
2913 if (IS_ERR(acl))
2914 return PTR_ERR(acl);
2915
2916 err = rdev_set_mac_acl(rdev, dev, acl);
2917
2918 kfree(acl);
2919
2920 return err;
2921 }
2922
2923 static int nl80211_parse_beacon(struct nlattr *attrs[],
2924 struct cfg80211_beacon_data *bcn)
2925 {
2926 bool haveinfo = false;
2927
2928 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2929 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2930 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2931 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2932 return -EINVAL;
2933
2934 memset(bcn, 0, sizeof(*bcn));
2935
2936 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2937 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2938 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2939 if (!bcn->head_len)
2940 return -EINVAL;
2941 haveinfo = true;
2942 }
2943
2944 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2945 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2946 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2947 haveinfo = true;
2948 }
2949
2950 if (!haveinfo)
2951 return -EINVAL;
2952
2953 if (attrs[NL80211_ATTR_IE]) {
2954 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2955 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
2956 }
2957
2958 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2959 bcn->proberesp_ies =
2960 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2961 bcn->proberesp_ies_len =
2962 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2963 }
2964
2965 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2966 bcn->assocresp_ies =
2967 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2968 bcn->assocresp_ies_len =
2969 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2970 }
2971
2972 if (attrs[NL80211_ATTR_PROBE_RESP]) {
2973 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
2974 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
2975 }
2976
2977 return 0;
2978 }
2979
2980 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2981 struct cfg80211_ap_settings *params)
2982 {
2983 struct wireless_dev *wdev;
2984 bool ret = false;
2985
2986 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2987 if (wdev->iftype != NL80211_IFTYPE_AP &&
2988 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2989 continue;
2990
2991 if (!wdev->preset_chandef.chan)
2992 continue;
2993
2994 params->chandef = wdev->preset_chandef;
2995 ret = true;
2996 break;
2997 }
2998
2999 return ret;
3000 }
3001
3002 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3003 enum nl80211_auth_type auth_type,
3004 enum nl80211_commands cmd)
3005 {
3006 if (auth_type > NL80211_AUTHTYPE_MAX)
3007 return false;
3008
3009 switch (cmd) {
3010 case NL80211_CMD_AUTHENTICATE:
3011 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3012 auth_type == NL80211_AUTHTYPE_SAE)
3013 return false;
3014 return true;
3015 case NL80211_CMD_CONNECT:
3016 case NL80211_CMD_START_AP:
3017 /* SAE not supported yet */
3018 if (auth_type == NL80211_AUTHTYPE_SAE)
3019 return false;
3020 return true;
3021 default:
3022 return false;
3023 }
3024 }
3025
3026 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3027 {
3028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3029 struct net_device *dev = info->user_ptr[1];
3030 struct wireless_dev *wdev = dev->ieee80211_ptr;
3031 struct cfg80211_ap_settings params;
3032 int err;
3033 u8 radar_detect_width = 0;
3034
3035 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3036 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3037 return -EOPNOTSUPP;
3038
3039 if (!rdev->ops->start_ap)
3040 return -EOPNOTSUPP;
3041
3042 if (wdev->beacon_interval)
3043 return -EALREADY;
3044
3045 memset(&params, 0, sizeof(params));
3046
3047 /* these are required for START_AP */
3048 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3049 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3050 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3051 return -EINVAL;
3052
3053 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3054 if (err)
3055 return err;
3056
3057 params.beacon_interval =
3058 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3059 params.dtim_period =
3060 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3061
3062 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3063 if (err)
3064 return err;
3065
3066 /*
3067 * In theory, some of these attributes should be required here
3068 * but since they were not used when the command was originally
3069 * added, keep them optional for old user space programs to let
3070 * them continue to work with drivers that do not need the
3071 * additional information -- drivers must check!
3072 */
3073 if (info->attrs[NL80211_ATTR_SSID]) {
3074 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3075 params.ssid_len =
3076 nla_len(info->attrs[NL80211_ATTR_SSID]);
3077 if (params.ssid_len == 0 ||
3078 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3079 return -EINVAL;
3080 }
3081
3082 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3083 params.hidden_ssid = nla_get_u32(
3084 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3085 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3086 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3087 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3088 return -EINVAL;
3089 }
3090
3091 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3092
3093 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3094 params.auth_type = nla_get_u32(
3095 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3096 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3097 NL80211_CMD_START_AP))
3098 return -EINVAL;
3099 } else
3100 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3101
3102 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3103 NL80211_MAX_NR_CIPHER_SUITES);
3104 if (err)
3105 return err;
3106
3107 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3108 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3109 return -EOPNOTSUPP;
3110 params.inactivity_timeout = nla_get_u16(
3111 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3112 }
3113
3114 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3115 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3116 return -EINVAL;
3117 params.p2p_ctwindow =
3118 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3119 if (params.p2p_ctwindow > 127)
3120 return -EINVAL;
3121 if (params.p2p_ctwindow != 0 &&
3122 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3123 return -EINVAL;
3124 }
3125
3126 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3127 u8 tmp;
3128
3129 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3130 return -EINVAL;
3131 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3132 if (tmp > 1)
3133 return -EINVAL;
3134 params.p2p_opp_ps = tmp;
3135 if (params.p2p_opp_ps != 0 &&
3136 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3137 return -EINVAL;
3138 }
3139
3140 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3141 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3142 if (err)
3143 return err;
3144 } else if (wdev->preset_chandef.chan) {
3145 params.chandef = wdev->preset_chandef;
3146 } else if (!nl80211_get_ap_channel(rdev, &params))
3147 return -EINVAL;
3148
3149 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3150 return -EINVAL;
3151
3152 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3153 if (err < 0)
3154 return err;
3155 if (err) {
3156 radar_detect_width = BIT(params.chandef.width);
3157 params.radar_required = true;
3158 }
3159
3160 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3161 params.chandef.chan,
3162 CHAN_MODE_SHARED,
3163 radar_detect_width);
3164 if (err)
3165 return err;
3166
3167 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3168 params.acl = parse_acl_data(&rdev->wiphy, info);
3169 if (IS_ERR(params.acl))
3170 return PTR_ERR(params.acl);
3171 }
3172
3173 err = rdev_start_ap(rdev, dev, &params);
3174 if (!err) {
3175 wdev->preset_chandef = params.chandef;
3176 wdev->beacon_interval = params.beacon_interval;
3177 wdev->channel = params.chandef.chan;
3178 wdev->ssid_len = params.ssid_len;
3179 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3180 }
3181
3182 kfree(params.acl);
3183
3184 return err;
3185 }
3186
3187 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3188 {
3189 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3190 struct net_device *dev = info->user_ptr[1];
3191 struct wireless_dev *wdev = dev->ieee80211_ptr;
3192 struct cfg80211_beacon_data params;
3193 int err;
3194
3195 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3197 return -EOPNOTSUPP;
3198
3199 if (!rdev->ops->change_beacon)
3200 return -EOPNOTSUPP;
3201
3202 if (!wdev->beacon_interval)
3203 return -EINVAL;
3204
3205 err = nl80211_parse_beacon(info->attrs, &params);
3206 if (err)
3207 return err;
3208
3209 return rdev_change_beacon(rdev, dev, &params);
3210 }
3211
3212 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3213 {
3214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3215 struct net_device *dev = info->user_ptr[1];
3216
3217 return cfg80211_stop_ap(rdev, dev);
3218 }
3219
3220 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3221 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3222 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3223 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3224 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3225 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3226 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3227 };
3228
3229 static int parse_station_flags(struct genl_info *info,
3230 enum nl80211_iftype iftype,
3231 struct station_parameters *params)
3232 {
3233 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3234 struct nlattr *nla;
3235 int flag;
3236
3237 /*
3238 * Try parsing the new attribute first so userspace
3239 * can specify both for older kernels.
3240 */
3241 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3242 if (nla) {
3243 struct nl80211_sta_flag_update *sta_flags;
3244
3245 sta_flags = nla_data(nla);
3246 params->sta_flags_mask = sta_flags->mask;
3247 params->sta_flags_set = sta_flags->set;
3248 params->sta_flags_set &= params->sta_flags_mask;
3249 if ((params->sta_flags_mask |
3250 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3251 return -EINVAL;
3252 return 0;
3253 }
3254
3255 /* if present, parse the old attribute */
3256
3257 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3258 if (!nla)
3259 return 0;
3260
3261 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3262 nla, sta_flags_policy))
3263 return -EINVAL;
3264
3265 /*
3266 * Only allow certain flags for interface types so that
3267 * other attributes are silently ignored. Remember that
3268 * this is backward compatibility code with old userspace
3269 * and shouldn't be hit in other cases anyway.
3270 */
3271 switch (iftype) {
3272 case NL80211_IFTYPE_AP:
3273 case NL80211_IFTYPE_AP_VLAN:
3274 case NL80211_IFTYPE_P2P_GO:
3275 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3276 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3277 BIT(NL80211_STA_FLAG_WME) |
3278 BIT(NL80211_STA_FLAG_MFP);
3279 break;
3280 case NL80211_IFTYPE_P2P_CLIENT:
3281 case NL80211_IFTYPE_STATION:
3282 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3283 BIT(NL80211_STA_FLAG_TDLS_PEER);
3284 break;
3285 case NL80211_IFTYPE_MESH_POINT:
3286 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3287 BIT(NL80211_STA_FLAG_MFP) |
3288 BIT(NL80211_STA_FLAG_AUTHORIZED);
3289 default:
3290 return -EINVAL;
3291 }
3292
3293 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3294 if (flags[flag]) {
3295 params->sta_flags_set |= (1<<flag);
3296
3297 /* no longer support new API additions in old API */
3298 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3299 return -EINVAL;
3300 }
3301 }
3302
3303 return 0;
3304 }
3305
3306 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3307 int attr)
3308 {
3309 struct nlattr *rate;
3310 u32 bitrate;
3311 u16 bitrate_compat;
3312
3313 rate = nla_nest_start(msg, attr);
3314 if (!rate)
3315 return false;
3316
3317 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3318 bitrate = cfg80211_calculate_bitrate(info);
3319 /* report 16-bit bitrate only if we can */
3320 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3321 if (bitrate > 0 &&
3322 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3323 return false;
3324 if (bitrate_compat > 0 &&
3325 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3326 return false;
3327
3328 if (info->flags & RATE_INFO_FLAGS_MCS) {
3329 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3330 return false;
3331 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3332 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3333 return false;
3334 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3335 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3336 return false;
3337 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3338 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3339 return false;
3340 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3341 return false;
3342 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3343 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3344 return false;
3345 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3346 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3347 return false;
3348 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3349 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3350 return false;
3351 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3352 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3353 return false;
3354 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3355 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3356 return false;
3357 }
3358
3359 nla_nest_end(msg, rate);
3360 return true;
3361 }
3362
3363 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3364 int id)
3365 {
3366 void *attr;
3367 int i = 0;
3368
3369 if (!mask)
3370 return true;
3371
3372 attr = nla_nest_start(msg, id);
3373 if (!attr)
3374 return false;
3375
3376 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3377 if (!(mask & BIT(i)))
3378 continue;
3379
3380 if (nla_put_u8(msg, i, signal[i]))
3381 return false;
3382 }
3383
3384 nla_nest_end(msg, attr);
3385
3386 return true;
3387 }
3388
3389 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3390 int flags,
3391 struct cfg80211_registered_device *rdev,
3392 struct net_device *dev,
3393 const u8 *mac_addr, struct station_info *sinfo)
3394 {
3395 void *hdr;
3396 struct nlattr *sinfoattr, *bss_param;
3397
3398 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3399 if (!hdr)
3400 return -1;
3401
3402 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3403 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3404 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3405 goto nla_put_failure;
3406
3407 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3408 if (!sinfoattr)
3409 goto nla_put_failure;
3410 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3411 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3412 sinfo->connected_time))
3413 goto nla_put_failure;
3414 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3415 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3416 sinfo->inactive_time))
3417 goto nla_put_failure;
3418 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3419 STATION_INFO_RX_BYTES64)) &&
3420 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3421 (u32)sinfo->rx_bytes))
3422 goto nla_put_failure;
3423 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3424 STATION_INFO_TX_BYTES64)) &&
3425 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3426 (u32)sinfo->tx_bytes))
3427 goto nla_put_failure;
3428 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3429 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3430 sinfo->rx_bytes))
3431 goto nla_put_failure;
3432 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3433 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3434 sinfo->tx_bytes))
3435 goto nla_put_failure;
3436 if ((sinfo->filled & STATION_INFO_LLID) &&
3437 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3438 goto nla_put_failure;
3439 if ((sinfo->filled & STATION_INFO_PLID) &&
3440 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3441 goto nla_put_failure;
3442 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3443 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3444 sinfo->plink_state))
3445 goto nla_put_failure;
3446 switch (rdev->wiphy.signal_type) {
3447 case CFG80211_SIGNAL_TYPE_MBM:
3448 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3449 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3450 sinfo->signal))
3451 goto nla_put_failure;
3452 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3453 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3454 sinfo->signal_avg))
3455 goto nla_put_failure;
3456 break;
3457 default:
3458 break;
3459 }
3460 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3461 if (!nl80211_put_signal(msg, sinfo->chains,
3462 sinfo->chain_signal,
3463 NL80211_STA_INFO_CHAIN_SIGNAL))
3464 goto nla_put_failure;
3465 }
3466 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3467 if (!nl80211_put_signal(msg, sinfo->chains,
3468 sinfo->chain_signal_avg,
3469 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3470 goto nla_put_failure;
3471 }
3472 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3473 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3474 NL80211_STA_INFO_TX_BITRATE))
3475 goto nla_put_failure;
3476 }
3477 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3478 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3479 NL80211_STA_INFO_RX_BITRATE))
3480 goto nla_put_failure;
3481 }
3482 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3483 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3484 sinfo->rx_packets))
3485 goto nla_put_failure;
3486 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3487 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3488 sinfo->tx_packets))
3489 goto nla_put_failure;
3490 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3491 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3492 sinfo->tx_retries))
3493 goto nla_put_failure;
3494 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3495 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3496 sinfo->tx_failed))
3497 goto nla_put_failure;
3498 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3499 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3500 sinfo->beacon_loss_count))
3501 goto nla_put_failure;
3502 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3503 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3504 sinfo->local_pm))
3505 goto nla_put_failure;
3506 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3507 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3508 sinfo->peer_pm))
3509 goto nla_put_failure;
3510 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3511 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3512 sinfo->nonpeer_pm))
3513 goto nla_put_failure;
3514 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3515 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3516 if (!bss_param)
3517 goto nla_put_failure;
3518
3519 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3520 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3521 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3522 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3523 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3524 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3525 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3526 sinfo->bss_param.dtim_period) ||
3527 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3528 sinfo->bss_param.beacon_interval))
3529 goto nla_put_failure;
3530
3531 nla_nest_end(msg, bss_param);
3532 }
3533 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3534 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3535 sizeof(struct nl80211_sta_flag_update),
3536 &sinfo->sta_flags))
3537 goto nla_put_failure;
3538 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3539 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3540 sinfo->t_offset))
3541 goto nla_put_failure;
3542 nla_nest_end(msg, sinfoattr);
3543
3544 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3545 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3546 sinfo->assoc_req_ies))
3547 goto nla_put_failure;
3548
3549 return genlmsg_end(msg, hdr);
3550
3551 nla_put_failure:
3552 genlmsg_cancel(msg, hdr);
3553 return -EMSGSIZE;
3554 }
3555
3556 static int nl80211_dump_station(struct sk_buff *skb,
3557 struct netlink_callback *cb)
3558 {
3559 struct station_info sinfo;
3560 struct cfg80211_registered_device *dev;
3561 struct wireless_dev *wdev;
3562 u8 mac_addr[ETH_ALEN];
3563 int sta_idx = cb->args[2];
3564 int err;
3565
3566 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3567 if (err)
3568 return err;
3569
3570 if (!wdev->netdev) {
3571 err = -EINVAL;
3572 goto out_err;
3573 }
3574
3575 if (!dev->ops->dump_station) {
3576 err = -EOPNOTSUPP;
3577 goto out_err;
3578 }
3579
3580 while (1) {
3581 memset(&sinfo, 0, sizeof(sinfo));
3582 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3583 mac_addr, &sinfo);
3584 if (err == -ENOENT)
3585 break;
3586 if (err)
3587 goto out_err;
3588
3589 if (nl80211_send_station(skb,
3590 NETLINK_CB(cb->skb).portid,
3591 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3592 dev, wdev->netdev, mac_addr,
3593 &sinfo) < 0)
3594 goto out;
3595
3596 sta_idx++;
3597 }
3598
3599
3600 out:
3601 cb->args[2] = sta_idx;
3602 err = skb->len;
3603 out_err:
3604 nl80211_finish_wdev_dump(dev);
3605
3606 return err;
3607 }
3608
3609 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3610 {
3611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3612 struct net_device *dev = info->user_ptr[1];
3613 struct station_info sinfo;
3614 struct sk_buff *msg;
3615 u8 *mac_addr = NULL;
3616 int err;
3617
3618 memset(&sinfo, 0, sizeof(sinfo));
3619
3620 if (!info->attrs[NL80211_ATTR_MAC])
3621 return -EINVAL;
3622
3623 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3624
3625 if (!rdev->ops->get_station)
3626 return -EOPNOTSUPP;
3627
3628 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3629 if (err)
3630 return err;
3631
3632 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3633 if (!msg)
3634 return -ENOMEM;
3635
3636 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3637 rdev, dev, mac_addr, &sinfo) < 0) {
3638 nlmsg_free(msg);
3639 return -ENOBUFS;
3640 }
3641
3642 return genlmsg_reply(msg, info);
3643 }
3644
3645 int cfg80211_check_station_change(struct wiphy *wiphy,
3646 struct station_parameters *params,
3647 enum cfg80211_station_type statype)
3648 {
3649 if (params->listen_interval != -1)
3650 return -EINVAL;
3651 if (params->aid)
3652 return -EINVAL;
3653
3654 /* When you run into this, adjust the code below for the new flag */
3655 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3656
3657 switch (statype) {
3658 case CFG80211_STA_MESH_PEER_KERNEL:
3659 case CFG80211_STA_MESH_PEER_USER:
3660 /*
3661 * No ignoring the TDLS flag here -- the userspace mesh
3662 * code doesn't have the bug of including TDLS in the
3663 * mask everywhere.
3664 */
3665 if (params->sta_flags_mask &
3666 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3667 BIT(NL80211_STA_FLAG_MFP) |
3668 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3669 return -EINVAL;
3670 break;
3671 case CFG80211_STA_TDLS_PEER_SETUP:
3672 case CFG80211_STA_TDLS_PEER_ACTIVE:
3673 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3674 return -EINVAL;
3675 /* ignore since it can't change */
3676 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3677 break;
3678 default:
3679 /* disallow mesh-specific things */
3680 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3681 return -EINVAL;
3682 if (params->local_pm)
3683 return -EINVAL;
3684 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3685 return -EINVAL;
3686 }
3687
3688 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3689 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3690 /* TDLS can't be set, ... */
3691 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3692 return -EINVAL;
3693 /*
3694 * ... but don't bother the driver with it. This works around
3695 * a hostapd/wpa_supplicant issue -- it always includes the
3696 * TLDS_PEER flag in the mask even for AP mode.
3697 */
3698 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3699 }
3700
3701 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3702 /* reject other things that can't change */
3703 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3704 return -EINVAL;
3705 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3706 return -EINVAL;
3707 if (params->supported_rates)
3708 return -EINVAL;
3709 if (params->ext_capab || params->ht_capa || params->vht_capa)
3710 return -EINVAL;
3711 }
3712
3713 if (statype != CFG80211_STA_AP_CLIENT) {
3714 if (params->vlan)
3715 return -EINVAL;
3716 }
3717
3718 switch (statype) {
3719 case CFG80211_STA_AP_MLME_CLIENT:
3720 /* Use this only for authorizing/unauthorizing a station */
3721 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3722 return -EOPNOTSUPP;
3723 break;
3724 case CFG80211_STA_AP_CLIENT:
3725 /* accept only the listed bits */
3726 if (params->sta_flags_mask &
3727 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3728 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3729 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3730 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3731 BIT(NL80211_STA_FLAG_WME) |
3732 BIT(NL80211_STA_FLAG_MFP)))
3733 return -EINVAL;
3734
3735 /* but authenticated/associated only if driver handles it */
3736 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3737 params->sta_flags_mask &
3738 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3739 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3740 return -EINVAL;
3741 break;
3742 case CFG80211_STA_IBSS:
3743 case CFG80211_STA_AP_STA:
3744 /* reject any changes other than AUTHORIZED */
3745 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3746 return -EINVAL;
3747 break;
3748 case CFG80211_STA_TDLS_PEER_SETUP:
3749 /* reject any changes other than AUTHORIZED or WME */
3750 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3751 BIT(NL80211_STA_FLAG_WME)))
3752 return -EINVAL;
3753 /* force (at least) rates when authorizing */
3754 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3755 !params->supported_rates)
3756 return -EINVAL;
3757 break;
3758 case CFG80211_STA_TDLS_PEER_ACTIVE:
3759 /* reject any changes */
3760 return -EINVAL;
3761 case CFG80211_STA_MESH_PEER_KERNEL:
3762 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3763 return -EINVAL;
3764 break;
3765 case CFG80211_STA_MESH_PEER_USER:
3766 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3767 return -EINVAL;
3768 break;
3769 }
3770
3771 return 0;
3772 }
3773 EXPORT_SYMBOL(cfg80211_check_station_change);
3774
3775 /*
3776 * Get vlan interface making sure it is running and on the right wiphy.
3777 */
3778 static struct net_device *get_vlan(struct genl_info *info,
3779 struct cfg80211_registered_device *rdev)
3780 {
3781 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3782 struct net_device *v;
3783 int ret;
3784
3785 if (!vlanattr)
3786 return NULL;
3787
3788 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3789 if (!v)
3790 return ERR_PTR(-ENODEV);
3791
3792 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3793 ret = -EINVAL;
3794 goto error;
3795 }
3796
3797 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3798 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3799 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3800 ret = -EINVAL;
3801 goto error;
3802 }
3803
3804 if (!netif_running(v)) {
3805 ret = -ENETDOWN;
3806 goto error;
3807 }
3808
3809 return v;
3810 error:
3811 dev_put(v);
3812 return ERR_PTR(ret);
3813 }
3814
3815 static struct nla_policy
3816 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3817 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3818 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3819 };
3820
3821 static int nl80211_parse_sta_wme(struct genl_info *info,
3822 struct station_parameters *params)
3823 {
3824 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3825 struct nlattr *nla;
3826 int err;
3827
3828 /* parse WME attributes if present */
3829 if (!info->attrs[NL80211_ATTR_STA_WME])
3830 return 0;
3831
3832 nla = info->attrs[NL80211_ATTR_STA_WME];
3833 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3834 nl80211_sta_wme_policy);
3835 if (err)
3836 return err;
3837
3838 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3839 params->uapsd_queues = nla_get_u8(
3840 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3841 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3842 return -EINVAL;
3843
3844 if (tb[NL80211_STA_WME_MAX_SP])
3845 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3846
3847 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3848 return -EINVAL;
3849
3850 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3851
3852 return 0;
3853 }
3854
3855 static int nl80211_set_station_tdls(struct genl_info *info,
3856 struct station_parameters *params)
3857 {
3858 /* Dummy STA entry gets updated once the peer capabilities are known */
3859 if (info->attrs[NL80211_ATTR_PEER_AID])
3860 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3861 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3862 params->ht_capa =
3863 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3864 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3865 params->vht_capa =
3866 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3867
3868 return nl80211_parse_sta_wme(info, params);
3869 }
3870
3871 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3872 {
3873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3874 struct net_device *dev = info->user_ptr[1];
3875 struct station_parameters params;
3876 u8 *mac_addr;
3877 int err;
3878
3879 memset(&params, 0, sizeof(params));
3880
3881 params.listen_interval = -1;
3882
3883 if (!rdev->ops->change_station)
3884 return -EOPNOTSUPP;
3885
3886 if (info->attrs[NL80211_ATTR_STA_AID])
3887 return -EINVAL;
3888
3889 if (!info->attrs[NL80211_ATTR_MAC])
3890 return -EINVAL;
3891
3892 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3893
3894 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3895 params.supported_rates =
3896 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3897 params.supported_rates_len =
3898 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3899 }
3900
3901 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3902 params.capability =
3903 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3904 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3905 }
3906
3907 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3908 params.ext_capab =
3909 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3910 params.ext_capab_len =
3911 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3912 }
3913
3914 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3915 return -EINVAL;
3916
3917 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3918 return -EINVAL;
3919
3920 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3921 params.plink_action =
3922 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3923 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3924 return -EINVAL;
3925 }
3926
3927 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3928 params.plink_state =
3929 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3930 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3931 return -EINVAL;
3932 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3933 }
3934
3935 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3936 enum nl80211_mesh_power_mode pm = nla_get_u32(
3937 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3938
3939 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3940 pm > NL80211_MESH_POWER_MAX)
3941 return -EINVAL;
3942
3943 params.local_pm = pm;
3944 }
3945
3946 /* Include parameters for TDLS peer (will check later) */
3947 err = nl80211_set_station_tdls(info, &params);
3948 if (err)
3949 return err;
3950
3951 params.vlan = get_vlan(info, rdev);
3952 if (IS_ERR(params.vlan))
3953 return PTR_ERR(params.vlan);
3954
3955 switch (dev->ieee80211_ptr->iftype) {
3956 case NL80211_IFTYPE_AP:
3957 case NL80211_IFTYPE_AP_VLAN:
3958 case NL80211_IFTYPE_P2P_GO:
3959 case NL80211_IFTYPE_P2P_CLIENT:
3960 case NL80211_IFTYPE_STATION:
3961 case NL80211_IFTYPE_ADHOC:
3962 case NL80211_IFTYPE_MESH_POINT:
3963 break;
3964 default:
3965 err = -EOPNOTSUPP;
3966 goto out_put_vlan;
3967 }
3968
3969 /* driver will call cfg80211_check_station_change() */
3970 err = rdev_change_station(rdev, dev, mac_addr, &params);
3971
3972 out_put_vlan:
3973 if (params.vlan)
3974 dev_put(params.vlan);
3975
3976 return err;
3977 }
3978
3979 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3980 {
3981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3982 int err;
3983 struct net_device *dev = info->user_ptr[1];
3984 struct station_parameters params;
3985 u8 *mac_addr = NULL;
3986
3987 memset(&params, 0, sizeof(params));
3988
3989 if (!rdev->ops->add_station)
3990 return -EOPNOTSUPP;
3991
3992 if (!info->attrs[NL80211_ATTR_MAC])
3993 return -EINVAL;
3994
3995 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3996 return -EINVAL;
3997
3998 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3999 return -EINVAL;
4000
4001 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4002 !info->attrs[NL80211_ATTR_PEER_AID])
4003 return -EINVAL;
4004
4005 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4006 params.supported_rates =
4007 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4008 params.supported_rates_len =
4009 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4010 params.listen_interval =
4011 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4012
4013 if (info->attrs[NL80211_ATTR_PEER_AID])
4014 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4015 else
4016 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4017 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4018 return -EINVAL;
4019
4020 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4021 params.capability =
4022 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4023 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4024 }
4025
4026 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4027 params.ext_capab =
4028 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4029 params.ext_capab_len =
4030 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4031 }
4032
4033 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4034 params.ht_capa =
4035 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4036
4037 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4038 params.vht_capa =
4039 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4040
4041 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4042 params.plink_action =
4043 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4044 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4045 return -EINVAL;
4046 }
4047
4048 err = nl80211_parse_sta_wme(info, &params);
4049 if (err)
4050 return err;
4051
4052 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4053 return -EINVAL;
4054
4055 /* When you run into this, adjust the code below for the new flag */
4056 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4057
4058 switch (dev->ieee80211_ptr->iftype) {
4059 case NL80211_IFTYPE_AP:
4060 case NL80211_IFTYPE_AP_VLAN:
4061 case NL80211_IFTYPE_P2P_GO:
4062 /* ignore WME attributes if iface/sta is not capable */
4063 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4064 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4065 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4066
4067 /* TDLS peers cannot be added */
4068 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4069 info->attrs[NL80211_ATTR_PEER_AID])
4070 return -EINVAL;
4071 /* but don't bother the driver with it */
4072 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4073
4074 /* allow authenticated/associated only if driver handles it */
4075 if (!(rdev->wiphy.features &
4076 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4077 params.sta_flags_mask &
4078 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4079 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4080 return -EINVAL;
4081
4082 /* must be last in here for error handling */
4083 params.vlan = get_vlan(info, rdev);
4084 if (IS_ERR(params.vlan))
4085 return PTR_ERR(params.vlan);
4086 break;
4087 case NL80211_IFTYPE_MESH_POINT:
4088 /* ignore uAPSD data */
4089 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4090
4091 /* associated is disallowed */
4092 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4093 return -EINVAL;
4094 /* TDLS peers cannot be added */
4095 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4096 info->attrs[NL80211_ATTR_PEER_AID])
4097 return -EINVAL;
4098 break;
4099 case NL80211_IFTYPE_STATION:
4100 case NL80211_IFTYPE_P2P_CLIENT:
4101 /* ignore uAPSD data */
4102 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4103
4104 /* these are disallowed */
4105 if (params.sta_flags_mask &
4106 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4107 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4108 return -EINVAL;
4109 /* Only TDLS peers can be added */
4110 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4111 return -EINVAL;
4112 /* Can only add if TDLS ... */
4113 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4114 return -EOPNOTSUPP;
4115 /* ... with external setup is supported */
4116 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4117 return -EOPNOTSUPP;
4118 /*
4119 * Older wpa_supplicant versions always mark the TDLS peer
4120 * as authorized, but it shouldn't yet be.
4121 */
4122 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4123 break;
4124 default:
4125 return -EOPNOTSUPP;
4126 }
4127
4128 /* be aware of params.vlan when changing code here */
4129
4130 err = rdev_add_station(rdev, dev, mac_addr, &params);
4131
4132 if (params.vlan)
4133 dev_put(params.vlan);
4134 return err;
4135 }
4136
4137 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4138 {
4139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4140 struct net_device *dev = info->user_ptr[1];
4141 u8 *mac_addr = NULL;
4142
4143 if (info->attrs[NL80211_ATTR_MAC])
4144 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4145
4146 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4147 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4148 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4149 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4150 return -EINVAL;
4151
4152 if (!rdev->ops->del_station)
4153 return -EOPNOTSUPP;
4154
4155 return rdev_del_station(rdev, dev, mac_addr);
4156 }
4157
4158 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4159 int flags, struct net_device *dev,
4160 u8 *dst, u8 *next_hop,
4161 struct mpath_info *pinfo)
4162 {
4163 void *hdr;
4164 struct nlattr *pinfoattr;
4165
4166 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4167 if (!hdr)
4168 return -1;
4169
4170 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4171 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4172 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4173 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4174 goto nla_put_failure;
4175
4176 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4177 if (!pinfoattr)
4178 goto nla_put_failure;
4179 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4180 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4181 pinfo->frame_qlen))
4182 goto nla_put_failure;
4183 if (((pinfo->filled & MPATH_INFO_SN) &&
4184 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4185 ((pinfo->filled & MPATH_INFO_METRIC) &&
4186 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4187 pinfo->metric)) ||
4188 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4189 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4190 pinfo->exptime)) ||
4191 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4192 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4193 pinfo->flags)) ||
4194 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4195 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4196 pinfo->discovery_timeout)) ||
4197 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4198 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4199 pinfo->discovery_retries)))
4200 goto nla_put_failure;
4201
4202 nla_nest_end(msg, pinfoattr);
4203
4204 return genlmsg_end(msg, hdr);
4205
4206 nla_put_failure:
4207 genlmsg_cancel(msg, hdr);
4208 return -EMSGSIZE;
4209 }
4210
4211 static int nl80211_dump_mpath(struct sk_buff *skb,
4212 struct netlink_callback *cb)
4213 {
4214 struct mpath_info pinfo;
4215 struct cfg80211_registered_device *dev;
4216 struct wireless_dev *wdev;
4217 u8 dst[ETH_ALEN];
4218 u8 next_hop[ETH_ALEN];
4219 int path_idx = cb->args[2];
4220 int err;
4221
4222 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4223 if (err)
4224 return err;
4225
4226 if (!dev->ops->dump_mpath) {
4227 err = -EOPNOTSUPP;
4228 goto out_err;
4229 }
4230
4231 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4232 err = -EOPNOTSUPP;
4233 goto out_err;
4234 }
4235
4236 while (1) {
4237 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4238 next_hop, &pinfo);
4239 if (err == -ENOENT)
4240 break;
4241 if (err)
4242 goto out_err;
4243
4244 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4245 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4246 wdev->netdev, dst, next_hop,
4247 &pinfo) < 0)
4248 goto out;
4249
4250 path_idx++;
4251 }
4252
4253
4254 out:
4255 cb->args[2] = path_idx;
4256 err = skb->len;
4257 out_err:
4258 nl80211_finish_wdev_dump(dev);
4259 return err;
4260 }
4261
4262 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4263 {
4264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4265 int err;
4266 struct net_device *dev = info->user_ptr[1];
4267 struct mpath_info pinfo;
4268 struct sk_buff *msg;
4269 u8 *dst = NULL;
4270 u8 next_hop[ETH_ALEN];
4271
4272 memset(&pinfo, 0, sizeof(pinfo));
4273
4274 if (!info->attrs[NL80211_ATTR_MAC])
4275 return -EINVAL;
4276
4277 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4278
4279 if (!rdev->ops->get_mpath)
4280 return -EOPNOTSUPP;
4281
4282 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4283 return -EOPNOTSUPP;
4284
4285 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4286 if (err)
4287 return err;
4288
4289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4290 if (!msg)
4291 return -ENOMEM;
4292
4293 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4294 dev, dst, next_hop, &pinfo) < 0) {
4295 nlmsg_free(msg);
4296 return -ENOBUFS;
4297 }
4298
4299 return genlmsg_reply(msg, info);
4300 }
4301
4302 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4303 {
4304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4305 struct net_device *dev = info->user_ptr[1];
4306 u8 *dst = NULL;
4307 u8 *next_hop = NULL;
4308
4309 if (!info->attrs[NL80211_ATTR_MAC])
4310 return -EINVAL;
4311
4312 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4313 return -EINVAL;
4314
4315 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4316 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4317
4318 if (!rdev->ops->change_mpath)
4319 return -EOPNOTSUPP;
4320
4321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4322 return -EOPNOTSUPP;
4323
4324 return rdev_change_mpath(rdev, dev, dst, next_hop);
4325 }
4326
4327 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4328 {
4329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4330 struct net_device *dev = info->user_ptr[1];
4331 u8 *dst = NULL;
4332 u8 *next_hop = NULL;
4333
4334 if (!info->attrs[NL80211_ATTR_MAC])
4335 return -EINVAL;
4336
4337 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4338 return -EINVAL;
4339
4340 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4341 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4342
4343 if (!rdev->ops->add_mpath)
4344 return -EOPNOTSUPP;
4345
4346 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4347 return -EOPNOTSUPP;
4348
4349 return rdev_add_mpath(rdev, dev, dst, next_hop);
4350 }
4351
4352 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4353 {
4354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4355 struct net_device *dev = info->user_ptr[1];
4356 u8 *dst = NULL;
4357
4358 if (info->attrs[NL80211_ATTR_MAC])
4359 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360
4361 if (!rdev->ops->del_mpath)
4362 return -EOPNOTSUPP;
4363
4364 return rdev_del_mpath(rdev, dev, dst);
4365 }
4366
4367 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4368 {
4369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4370 struct net_device *dev = info->user_ptr[1];
4371 struct bss_parameters params;
4372
4373 memset(&params, 0, sizeof(params));
4374 /* default to not changing parameters */
4375 params.use_cts_prot = -1;
4376 params.use_short_preamble = -1;
4377 params.use_short_slot_time = -1;
4378 params.ap_isolate = -1;
4379 params.ht_opmode = -1;
4380 params.p2p_ctwindow = -1;
4381 params.p2p_opp_ps = -1;
4382
4383 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4384 params.use_cts_prot =
4385 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4386 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4387 params.use_short_preamble =
4388 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4389 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4390 params.use_short_slot_time =
4391 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4392 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4393 params.basic_rates =
4394 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4395 params.basic_rates_len =
4396 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4397 }
4398 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4399 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4400 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4401 params.ht_opmode =
4402 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4403
4404 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4405 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4406 return -EINVAL;
4407 params.p2p_ctwindow =
4408 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4409 if (params.p2p_ctwindow < 0)
4410 return -EINVAL;
4411 if (params.p2p_ctwindow != 0 &&
4412 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4413 return -EINVAL;
4414 }
4415
4416 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4417 u8 tmp;
4418
4419 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4420 return -EINVAL;
4421 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4422 if (tmp > 1)
4423 return -EINVAL;
4424 params.p2p_opp_ps = tmp;
4425 if (params.p2p_opp_ps &&
4426 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4427 return -EINVAL;
4428 }
4429
4430 if (!rdev->ops->change_bss)
4431 return -EOPNOTSUPP;
4432
4433 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4434 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4435 return -EOPNOTSUPP;
4436
4437 return rdev_change_bss(rdev, dev, &params);
4438 }
4439
4440 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4441 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4442 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4443 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4444 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4445 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4446 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4447 };
4448
4449 static int parse_reg_rule(struct nlattr *tb[],
4450 struct ieee80211_reg_rule *reg_rule)
4451 {
4452 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4453 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4454
4455 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4456 return -EINVAL;
4457 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4458 return -EINVAL;
4459 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4460 return -EINVAL;
4461 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4462 return -EINVAL;
4463 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4464 return -EINVAL;
4465
4466 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4467
4468 freq_range->start_freq_khz =
4469 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4470 freq_range->end_freq_khz =
4471 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4472 freq_range->max_bandwidth_khz =
4473 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4474
4475 power_rule->max_eirp =
4476 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4477
4478 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4479 power_rule->max_antenna_gain =
4480 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4481
4482 return 0;
4483 }
4484
4485 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4486 {
4487 int r;
4488 char *data = NULL;
4489 enum nl80211_user_reg_hint_type user_reg_hint_type;
4490
4491 /*
4492 * You should only get this when cfg80211 hasn't yet initialized
4493 * completely when built-in to the kernel right between the time
4494 * window between nl80211_init() and regulatory_init(), if that is
4495 * even possible.
4496 */
4497 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4498 return -EINPROGRESS;
4499
4500 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4501 return -EINVAL;
4502
4503 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4504
4505 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4506 user_reg_hint_type =
4507 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4508 else
4509 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4510
4511 switch (user_reg_hint_type) {
4512 case NL80211_USER_REG_HINT_USER:
4513 case NL80211_USER_REG_HINT_CELL_BASE:
4514 break;
4515 default:
4516 return -EINVAL;
4517 }
4518
4519 r = regulatory_hint_user(data, user_reg_hint_type);
4520
4521 return r;
4522 }
4523
4524 static int nl80211_get_mesh_config(struct sk_buff *skb,
4525 struct genl_info *info)
4526 {
4527 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4528 struct net_device *dev = info->user_ptr[1];
4529 struct wireless_dev *wdev = dev->ieee80211_ptr;
4530 struct mesh_config cur_params;
4531 int err = 0;
4532 void *hdr;
4533 struct nlattr *pinfoattr;
4534 struct sk_buff *msg;
4535
4536 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4537 return -EOPNOTSUPP;
4538
4539 if (!rdev->ops->get_mesh_config)
4540 return -EOPNOTSUPP;
4541
4542 wdev_lock(wdev);
4543 /* If not connected, get default parameters */
4544 if (!wdev->mesh_id_len)
4545 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4546 else
4547 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4548 wdev_unlock(wdev);
4549
4550 if (err)
4551 return err;
4552
4553 /* Draw up a netlink message to send back */
4554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4555 if (!msg)
4556 return -ENOMEM;
4557 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4558 NL80211_CMD_GET_MESH_CONFIG);
4559 if (!hdr)
4560 goto out;
4561 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4562 if (!pinfoattr)
4563 goto nla_put_failure;
4564 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4565 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4566 cur_params.dot11MeshRetryTimeout) ||
4567 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4568 cur_params.dot11MeshConfirmTimeout) ||
4569 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4570 cur_params.dot11MeshHoldingTimeout) ||
4571 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4572 cur_params.dot11MeshMaxPeerLinks) ||
4573 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4574 cur_params.dot11MeshMaxRetries) ||
4575 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4576 cur_params.dot11MeshTTL) ||
4577 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4578 cur_params.element_ttl) ||
4579 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4580 cur_params.auto_open_plinks) ||
4581 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4582 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4583 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4584 cur_params.dot11MeshHWMPmaxPREQretries) ||
4585 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4586 cur_params.path_refresh_time) ||
4587 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4588 cur_params.min_discovery_timeout) ||
4589 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4590 cur_params.dot11MeshHWMPactivePathTimeout) ||
4591 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4592 cur_params.dot11MeshHWMPpreqMinInterval) ||
4593 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4594 cur_params.dot11MeshHWMPperrMinInterval) ||
4595 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4596 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4597 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4598 cur_params.dot11MeshHWMPRootMode) ||
4599 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4600 cur_params.dot11MeshHWMPRannInterval) ||
4601 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4602 cur_params.dot11MeshGateAnnouncementProtocol) ||
4603 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4604 cur_params.dot11MeshForwarding) ||
4605 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4606 cur_params.rssi_threshold) ||
4607 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4608 cur_params.ht_opmode) ||
4609 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4610 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4611 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4612 cur_params.dot11MeshHWMProotInterval) ||
4613 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4614 cur_params.dot11MeshHWMPconfirmationInterval) ||
4615 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4616 cur_params.power_mode) ||
4617 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4618 cur_params.dot11MeshAwakeWindowDuration) ||
4619 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4620 cur_params.plink_timeout))
4621 goto nla_put_failure;
4622 nla_nest_end(msg, pinfoattr);
4623 genlmsg_end(msg, hdr);
4624 return genlmsg_reply(msg, info);
4625
4626 nla_put_failure:
4627 genlmsg_cancel(msg, hdr);
4628 out:
4629 nlmsg_free(msg);
4630 return -ENOBUFS;
4631 }
4632
4633 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4634 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4635 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4636 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4637 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4638 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4639 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4640 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4641 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4642 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4643 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4644 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4645 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4646 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4647 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4648 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4649 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4650 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4651 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4652 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4653 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4654 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4655 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4656 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4657 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4658 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4659 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4660 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4661 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4662 };
4663
4664 static const struct nla_policy
4665 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4666 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4667 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4668 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4669 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4670 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4671 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4672 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4673 .len = IEEE80211_MAX_DATA_LEN },
4674 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4675 };
4676
4677 static int nl80211_parse_mesh_config(struct genl_info *info,
4678 struct mesh_config *cfg,
4679 u32 *mask_out)
4680 {
4681 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4682 u32 mask = 0;
4683
4684 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4685 do { \
4686 if (tb[attr]) { \
4687 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4688 return -EINVAL; \
4689 cfg->param = fn(tb[attr]); \
4690 mask |= (1 << (attr - 1)); \
4691 } \
4692 } while (0)
4693
4694
4695 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4696 return -EINVAL;
4697 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4698 info->attrs[NL80211_ATTR_MESH_CONFIG],
4699 nl80211_meshconf_params_policy))
4700 return -EINVAL;
4701
4702 /* This makes sure that there aren't more than 32 mesh config
4703 * parameters (otherwise our bitfield scheme would not work.) */
4704 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4705
4706 /* Fill in the params struct */
4707 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4708 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4709 nla_get_u16);
4710 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4711 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4712 nla_get_u16);
4713 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4714 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4715 nla_get_u16);
4716 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4717 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4718 nla_get_u16);
4719 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4720 mask, NL80211_MESHCONF_MAX_RETRIES,
4721 nla_get_u8);
4722 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4723 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4724 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4725 mask, NL80211_MESHCONF_ELEMENT_TTL,
4726 nla_get_u8);
4727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4728 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4729 nla_get_u8);
4730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4731 1, 255, mask,
4732 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4733 nla_get_u32);
4734 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4735 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4736 nla_get_u8);
4737 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4738 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4739 nla_get_u32);
4740 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4741 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4742 nla_get_u16);
4743 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4744 1, 65535, mask,
4745 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4746 nla_get_u32);
4747 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4748 1, 65535, mask,
4749 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4750 nla_get_u16);
4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4752 1, 65535, mask,
4753 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4754 nla_get_u16);
4755 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4756 dot11MeshHWMPnetDiameterTraversalTime,
4757 1, 65535, mask,
4758 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4759 nla_get_u16);
4760 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4761 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4762 nla_get_u8);
4763 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4764 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4765 nla_get_u16);
4766 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4767 dot11MeshGateAnnouncementProtocol, 0, 1,
4768 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4769 nla_get_u8);
4770 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4771 mask, NL80211_MESHCONF_FORWARDING,
4772 nla_get_u8);
4773 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4774 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4775 nla_get_u32);
4776 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4777 mask, NL80211_MESHCONF_HT_OPMODE,
4778 nla_get_u16);
4779 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4780 1, 65535, mask,
4781 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4782 nla_get_u32);
4783 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4784 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4785 nla_get_u16);
4786 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4787 dot11MeshHWMPconfirmationInterval,
4788 1, 65535, mask,
4789 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4790 nla_get_u16);
4791 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4792 NL80211_MESH_POWER_ACTIVE,
4793 NL80211_MESH_POWER_MAX,
4794 mask, NL80211_MESHCONF_POWER_MODE,
4795 nla_get_u32);
4796 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4797 0, 65535, mask,
4798 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4799 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4800 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4801 nla_get_u32);
4802 if (mask_out)
4803 *mask_out = mask;
4804
4805 return 0;
4806
4807 #undef FILL_IN_MESH_PARAM_IF_SET
4808 }
4809
4810 static int nl80211_parse_mesh_setup(struct genl_info *info,
4811 struct mesh_setup *setup)
4812 {
4813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4814 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4815
4816 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4817 return -EINVAL;
4818 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4819 info->attrs[NL80211_ATTR_MESH_SETUP],
4820 nl80211_mesh_setup_params_policy))
4821 return -EINVAL;
4822
4823 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4824 setup->sync_method =
4825 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4826 IEEE80211_SYNC_METHOD_VENDOR :
4827 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4828
4829 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4830 setup->path_sel_proto =
4831 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4832 IEEE80211_PATH_PROTOCOL_VENDOR :
4833 IEEE80211_PATH_PROTOCOL_HWMP;
4834
4835 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4836 setup->path_metric =
4837 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4838 IEEE80211_PATH_METRIC_VENDOR :
4839 IEEE80211_PATH_METRIC_AIRTIME;
4840
4841
4842 if (tb[NL80211_MESH_SETUP_IE]) {
4843 struct nlattr *ieattr =
4844 tb[NL80211_MESH_SETUP_IE];
4845 if (!is_valid_ie_attr(ieattr))
4846 return -EINVAL;
4847 setup->ie = nla_data(ieattr);
4848 setup->ie_len = nla_len(ieattr);
4849 }
4850 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4851 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4852 return -EINVAL;
4853 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4854 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4855 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4856 if (setup->is_secure)
4857 setup->user_mpm = true;
4858
4859 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4860 if (!setup->user_mpm)
4861 return -EINVAL;
4862 setup->auth_id =
4863 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4864 }
4865
4866 return 0;
4867 }
4868
4869 static int nl80211_update_mesh_config(struct sk_buff *skb,
4870 struct genl_info *info)
4871 {
4872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4873 struct net_device *dev = info->user_ptr[1];
4874 struct wireless_dev *wdev = dev->ieee80211_ptr;
4875 struct mesh_config cfg;
4876 u32 mask;
4877 int err;
4878
4879 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4880 return -EOPNOTSUPP;
4881
4882 if (!rdev->ops->update_mesh_config)
4883 return -EOPNOTSUPP;
4884
4885 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4886 if (err)
4887 return err;
4888
4889 wdev_lock(wdev);
4890 if (!wdev->mesh_id_len)
4891 err = -ENOLINK;
4892
4893 if (!err)
4894 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4895
4896 wdev_unlock(wdev);
4897
4898 return err;
4899 }
4900
4901 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4902 {
4903 const struct ieee80211_regdomain *regdom;
4904 struct sk_buff *msg;
4905 void *hdr = NULL;
4906 struct nlattr *nl_reg_rules;
4907 unsigned int i;
4908
4909 if (!cfg80211_regdomain)
4910 return -EINVAL;
4911
4912 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4913 if (!msg)
4914 return -ENOBUFS;
4915
4916 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4917 NL80211_CMD_GET_REG);
4918 if (!hdr)
4919 goto put_failure;
4920
4921 if (reg_last_request_cell_base() &&
4922 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4923 NL80211_USER_REG_HINT_CELL_BASE))
4924 goto nla_put_failure;
4925
4926 rcu_read_lock();
4927 regdom = rcu_dereference(cfg80211_regdomain);
4928
4929 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4930 (regdom->dfs_region &&
4931 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4932 goto nla_put_failure_rcu;
4933
4934 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4935 if (!nl_reg_rules)
4936 goto nla_put_failure_rcu;
4937
4938 for (i = 0; i < regdom->n_reg_rules; i++) {
4939 struct nlattr *nl_reg_rule;
4940 const struct ieee80211_reg_rule *reg_rule;
4941 const struct ieee80211_freq_range *freq_range;
4942 const struct ieee80211_power_rule *power_rule;
4943
4944 reg_rule = &regdom->reg_rules[i];
4945 freq_range = &reg_rule->freq_range;
4946 power_rule = &reg_rule->power_rule;
4947
4948 nl_reg_rule = nla_nest_start(msg, i);
4949 if (!nl_reg_rule)
4950 goto nla_put_failure_rcu;
4951
4952 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4953 reg_rule->flags) ||
4954 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4955 freq_range->start_freq_khz) ||
4956 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4957 freq_range->end_freq_khz) ||
4958 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4959 freq_range->max_bandwidth_khz) ||
4960 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4961 power_rule->max_antenna_gain) ||
4962 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4963 power_rule->max_eirp))
4964 goto nla_put_failure_rcu;
4965
4966 nla_nest_end(msg, nl_reg_rule);
4967 }
4968 rcu_read_unlock();
4969
4970 nla_nest_end(msg, nl_reg_rules);
4971
4972 genlmsg_end(msg, hdr);
4973 return genlmsg_reply(msg, info);
4974
4975 nla_put_failure_rcu:
4976 rcu_read_unlock();
4977 nla_put_failure:
4978 genlmsg_cancel(msg, hdr);
4979 put_failure:
4980 nlmsg_free(msg);
4981 return -EMSGSIZE;
4982 }
4983
4984 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4985 {
4986 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4987 struct nlattr *nl_reg_rule;
4988 char *alpha2 = NULL;
4989 int rem_reg_rules = 0, r = 0;
4990 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4991 u8 dfs_region = 0;
4992 struct ieee80211_regdomain *rd = NULL;
4993
4994 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4995 return -EINVAL;
4996
4997 if (!info->attrs[NL80211_ATTR_REG_RULES])
4998 return -EINVAL;
4999
5000 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5001
5002 if (info->attrs[NL80211_ATTR_DFS_REGION])
5003 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5004
5005 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5006 rem_reg_rules) {
5007 num_rules++;
5008 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5009 return -EINVAL;
5010 }
5011
5012 size_of_regd = sizeof(struct ieee80211_regdomain) +
5013 num_rules * sizeof(struct ieee80211_reg_rule);
5014
5015 rd = kzalloc(size_of_regd, GFP_KERNEL);
5016 if (!rd)
5017 return -ENOMEM;
5018
5019 rd->n_reg_rules = num_rules;
5020 rd->alpha2[0] = alpha2[0];
5021 rd->alpha2[1] = alpha2[1];
5022
5023 /*
5024 * Disable DFS master mode if the DFS region was
5025 * not supported or known on this kernel.
5026 */
5027 if (reg_supported_dfs_region(dfs_region))
5028 rd->dfs_region = dfs_region;
5029
5030 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5031 rem_reg_rules) {
5032 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5033 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5034 reg_rule_policy);
5035 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5036 if (r)
5037 goto bad_reg;
5038
5039 rule_idx++;
5040
5041 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5042 r = -EINVAL;
5043 goto bad_reg;
5044 }
5045 }
5046
5047 r = set_regdom(rd);
5048 /* set_regdom took ownership */
5049 rd = NULL;
5050
5051 bad_reg:
5052 kfree(rd);
5053 return r;
5054 }
5055
5056 static int validate_scan_freqs(struct nlattr *freqs)
5057 {
5058 struct nlattr *attr1, *attr2;
5059 int n_channels = 0, tmp1, tmp2;
5060
5061 nla_for_each_nested(attr1, freqs, tmp1) {
5062 n_channels++;
5063 /*
5064 * Some hardware has a limited channel list for
5065 * scanning, and it is pretty much nonsensical
5066 * to scan for a channel twice, so disallow that
5067 * and don't require drivers to check that the
5068 * channel list they get isn't longer than what
5069 * they can scan, as long as they can scan all
5070 * the channels they registered at once.
5071 */
5072 nla_for_each_nested(attr2, freqs, tmp2)
5073 if (attr1 != attr2 &&
5074 nla_get_u32(attr1) == nla_get_u32(attr2))
5075 return 0;
5076 }
5077
5078 return n_channels;
5079 }
5080
5081 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5082 {
5083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5084 struct wireless_dev *wdev = info->user_ptr[1];
5085 struct cfg80211_scan_request *request;
5086 struct nlattr *attr;
5087 struct wiphy *wiphy;
5088 int err, tmp, n_ssids = 0, n_channels, i;
5089 size_t ie_len;
5090
5091 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5092 return -EINVAL;
5093
5094 wiphy = &rdev->wiphy;
5095
5096 if (!rdev->ops->scan)
5097 return -EOPNOTSUPP;
5098
5099 if (rdev->scan_req) {
5100 err = -EBUSY;
5101 goto unlock;
5102 }
5103
5104 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5105 n_channels = validate_scan_freqs(
5106 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5107 if (!n_channels) {
5108 err = -EINVAL;
5109 goto unlock;
5110 }
5111 } else {
5112 enum ieee80211_band band;
5113 n_channels = 0;
5114
5115 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5116 if (wiphy->bands[band])
5117 n_channels += wiphy->bands[band]->n_channels;
5118 }
5119
5120 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5121 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5122 n_ssids++;
5123
5124 if (n_ssids > wiphy->max_scan_ssids) {
5125 err = -EINVAL;
5126 goto unlock;
5127 }
5128
5129 if (info->attrs[NL80211_ATTR_IE])
5130 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5131 else
5132 ie_len = 0;
5133
5134 if (ie_len > wiphy->max_scan_ie_len) {
5135 err = -EINVAL;
5136 goto unlock;
5137 }
5138
5139 request = kzalloc(sizeof(*request)
5140 + sizeof(*request->ssids) * n_ssids
5141 + sizeof(*request->channels) * n_channels
5142 + ie_len, GFP_KERNEL);
5143 if (!request) {
5144 err = -ENOMEM;
5145 goto unlock;
5146 }
5147
5148 if (n_ssids)
5149 request->ssids = (void *)&request->channels[n_channels];
5150 request->n_ssids = n_ssids;
5151 if (ie_len) {
5152 if (request->ssids)
5153 request->ie = (void *)(request->ssids + n_ssids);
5154 else
5155 request->ie = (void *)(request->channels + n_channels);
5156 }
5157
5158 i = 0;
5159 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5160 /* user specified, bail out if channel not found */
5161 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5162 struct ieee80211_channel *chan;
5163
5164 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5165
5166 if (!chan) {
5167 err = -EINVAL;
5168 goto out_free;
5169 }
5170
5171 /* ignore disabled channels */
5172 if (chan->flags & IEEE80211_CHAN_DISABLED)
5173 continue;
5174
5175 request->channels[i] = chan;
5176 i++;
5177 }
5178 } else {
5179 enum ieee80211_band band;
5180
5181 /* all channels */
5182 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5183 int j;
5184 if (!wiphy->bands[band])
5185 continue;
5186 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5187 struct ieee80211_channel *chan;
5188
5189 chan = &wiphy->bands[band]->channels[j];
5190
5191 if (chan->flags & IEEE80211_CHAN_DISABLED)
5192 continue;
5193
5194 request->channels[i] = chan;
5195 i++;
5196 }
5197 }
5198 }
5199
5200 if (!i) {
5201 err = -EINVAL;
5202 goto out_free;
5203 }
5204
5205 request->n_channels = i;
5206
5207 i = 0;
5208 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5209 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5210 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5211 err = -EINVAL;
5212 goto out_free;
5213 }
5214 request->ssids[i].ssid_len = nla_len(attr);
5215 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5216 i++;
5217 }
5218 }
5219
5220 if (info->attrs[NL80211_ATTR_IE]) {
5221 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5222 memcpy((void *)request->ie,
5223 nla_data(info->attrs[NL80211_ATTR_IE]),
5224 request->ie_len);
5225 }
5226
5227 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5228 if (wiphy->bands[i])
5229 request->rates[i] =
5230 (1 << wiphy->bands[i]->n_bitrates) - 1;
5231
5232 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5233 nla_for_each_nested(attr,
5234 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5235 tmp) {
5236 enum ieee80211_band band = nla_type(attr);
5237
5238 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5239 err = -EINVAL;
5240 goto out_free;
5241 }
5242 err = ieee80211_get_ratemask(wiphy->bands[band],
5243 nla_data(attr),
5244 nla_len(attr),
5245 &request->rates[band]);
5246 if (err)
5247 goto out_free;
5248 }
5249 }
5250
5251 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5252 request->flags = nla_get_u32(
5253 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5254 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5255 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5256 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5257 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5258 err = -EOPNOTSUPP;
5259 goto out_free;
5260 }
5261 }
5262
5263 request->no_cck =
5264 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5265
5266 request->wdev = wdev;
5267 request->wiphy = &rdev->wiphy;
5268 request->scan_start = jiffies;
5269
5270 rdev->scan_req = request;
5271 err = rdev_scan(rdev, request);
5272
5273 if (!err) {
5274 nl80211_send_scan_start(rdev, wdev);
5275 if (wdev->netdev)
5276 dev_hold(wdev->netdev);
5277 } else {
5278 out_free:
5279 rdev->scan_req = NULL;
5280 kfree(request);
5281 }
5282
5283 unlock:
5284 return err;
5285 }
5286
5287 static int nl80211_start_sched_scan(struct sk_buff *skb,
5288 struct genl_info *info)
5289 {
5290 struct cfg80211_sched_scan_request *request;
5291 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5292 struct net_device *dev = info->user_ptr[1];
5293 struct nlattr *attr;
5294 struct wiphy *wiphy;
5295 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5296 u32 interval;
5297 enum ieee80211_band band;
5298 size_t ie_len;
5299 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5300
5301 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5302 !rdev->ops->sched_scan_start)
5303 return -EOPNOTSUPP;
5304
5305 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5306 return -EINVAL;
5307
5308 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5309 return -EINVAL;
5310
5311 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5312 if (interval == 0)
5313 return -EINVAL;
5314
5315 wiphy = &rdev->wiphy;
5316
5317 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5318 n_channels = validate_scan_freqs(
5319 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5320 if (!n_channels)
5321 return -EINVAL;
5322 } else {
5323 n_channels = 0;
5324
5325 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5326 if (wiphy->bands[band])
5327 n_channels += wiphy->bands[band]->n_channels;
5328 }
5329
5330 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5331 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5332 tmp)
5333 n_ssids++;
5334
5335 if (n_ssids > wiphy->max_sched_scan_ssids)
5336 return -EINVAL;
5337
5338 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5339 nla_for_each_nested(attr,
5340 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5341 tmp)
5342 n_match_sets++;
5343
5344 if (n_match_sets > wiphy->max_match_sets)
5345 return -EINVAL;
5346
5347 if (info->attrs[NL80211_ATTR_IE])
5348 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5349 else
5350 ie_len = 0;
5351
5352 if (ie_len > wiphy->max_sched_scan_ie_len)
5353 return -EINVAL;
5354
5355 if (rdev->sched_scan_req) {
5356 err = -EINPROGRESS;
5357 goto out;
5358 }
5359
5360 request = kzalloc(sizeof(*request)
5361 + sizeof(*request->ssids) * n_ssids
5362 + sizeof(*request->match_sets) * n_match_sets
5363 + sizeof(*request->channels) * n_channels
5364 + ie_len, GFP_KERNEL);
5365 if (!request) {
5366 err = -ENOMEM;
5367 goto out;
5368 }
5369
5370 if (n_ssids)
5371 request->ssids = (void *)&request->channels[n_channels];
5372 request->n_ssids = n_ssids;
5373 if (ie_len) {
5374 if (request->ssids)
5375 request->ie = (void *)(request->ssids + n_ssids);
5376 else
5377 request->ie = (void *)(request->channels + n_channels);
5378 }
5379
5380 if (n_match_sets) {
5381 if (request->ie)
5382 request->match_sets = (void *)(request->ie + ie_len);
5383 else if (request->ssids)
5384 request->match_sets =
5385 (void *)(request->ssids + n_ssids);
5386 else
5387 request->match_sets =
5388 (void *)(request->channels + n_channels);
5389 }
5390 request->n_match_sets = n_match_sets;
5391
5392 i = 0;
5393 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5394 /* user specified, bail out if channel not found */
5395 nla_for_each_nested(attr,
5396 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5397 tmp) {
5398 struct ieee80211_channel *chan;
5399
5400 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5401
5402 if (!chan) {
5403 err = -EINVAL;
5404 goto out_free;
5405 }
5406
5407 /* ignore disabled channels */
5408 if (chan->flags & IEEE80211_CHAN_DISABLED)
5409 continue;
5410
5411 request->channels[i] = chan;
5412 i++;
5413 }
5414 } else {
5415 /* all channels */
5416 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5417 int j;
5418 if (!wiphy->bands[band])
5419 continue;
5420 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5421 struct ieee80211_channel *chan;
5422
5423 chan = &wiphy->bands[band]->channels[j];
5424
5425 if (chan->flags & IEEE80211_CHAN_DISABLED)
5426 continue;
5427
5428 request->channels[i] = chan;
5429 i++;
5430 }
5431 }
5432 }
5433
5434 if (!i) {
5435 err = -EINVAL;
5436 goto out_free;
5437 }
5438
5439 request->n_channels = i;
5440
5441 i = 0;
5442 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5443 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5444 tmp) {
5445 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5446 err = -EINVAL;
5447 goto out_free;
5448 }
5449 request->ssids[i].ssid_len = nla_len(attr);
5450 memcpy(request->ssids[i].ssid, nla_data(attr),
5451 nla_len(attr));
5452 i++;
5453 }
5454 }
5455
5456 i = 0;
5457 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5458 nla_for_each_nested(attr,
5459 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5460 tmp) {
5461 struct nlattr *ssid, *rssi;
5462
5463 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5464 nla_data(attr), nla_len(attr),
5465 nl80211_match_policy);
5466 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5467 if (ssid) {
5468 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5469 err = -EINVAL;
5470 goto out_free;
5471 }
5472 memcpy(request->match_sets[i].ssid.ssid,
5473 nla_data(ssid), nla_len(ssid));
5474 request->match_sets[i].ssid.ssid_len =
5475 nla_len(ssid);
5476 }
5477 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5478 if (rssi)
5479 request->rssi_thold = nla_get_u32(rssi);
5480 else
5481 request->rssi_thold =
5482 NL80211_SCAN_RSSI_THOLD_OFF;
5483 i++;
5484 }
5485 }
5486
5487 if (info->attrs[NL80211_ATTR_IE]) {
5488 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5489 memcpy((void *)request->ie,
5490 nla_data(info->attrs[NL80211_ATTR_IE]),
5491 request->ie_len);
5492 }
5493
5494 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5495 request->flags = nla_get_u32(
5496 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5497 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5498 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5499 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5500 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5501 err = -EOPNOTSUPP;
5502 goto out_free;
5503 }
5504 }
5505
5506 request->dev = dev;
5507 request->wiphy = &rdev->wiphy;
5508 request->interval = interval;
5509 request->scan_start = jiffies;
5510
5511 err = rdev_sched_scan_start(rdev, dev, request);
5512 if (!err) {
5513 rdev->sched_scan_req = request;
5514 nl80211_send_sched_scan(rdev, dev,
5515 NL80211_CMD_START_SCHED_SCAN);
5516 goto out;
5517 }
5518
5519 out_free:
5520 kfree(request);
5521 out:
5522 return err;
5523 }
5524
5525 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5526 struct genl_info *info)
5527 {
5528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5529
5530 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5531 !rdev->ops->sched_scan_stop)
5532 return -EOPNOTSUPP;
5533
5534 return __cfg80211_stop_sched_scan(rdev, false);
5535 }
5536
5537 static int nl80211_start_radar_detection(struct sk_buff *skb,
5538 struct genl_info *info)
5539 {
5540 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5541 struct net_device *dev = info->user_ptr[1];
5542 struct wireless_dev *wdev = dev->ieee80211_ptr;
5543 struct cfg80211_chan_def chandef;
5544 int err;
5545
5546 err = nl80211_parse_chandef(rdev, info, &chandef);
5547 if (err)
5548 return err;
5549
5550 if (wdev->cac_started)
5551 return -EBUSY;
5552
5553 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5554 if (err < 0)
5555 return err;
5556
5557 if (err == 0)
5558 return -EINVAL;
5559
5560 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5561 return -EINVAL;
5562
5563 if (!rdev->ops->start_radar_detection)
5564 return -EOPNOTSUPP;
5565
5566 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5567 chandef.chan, CHAN_MODE_SHARED,
5568 BIT(chandef.width));
5569 if (err)
5570 return err;
5571
5572 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5573 if (!err) {
5574 wdev->channel = chandef.chan;
5575 wdev->cac_started = true;
5576 wdev->cac_start_time = jiffies;
5577 }
5578 return err;
5579 }
5580
5581 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5582 u32 seq, int flags,
5583 struct cfg80211_registered_device *rdev,
5584 struct wireless_dev *wdev,
5585 struct cfg80211_internal_bss *intbss)
5586 {
5587 struct cfg80211_bss *res = &intbss->pub;
5588 const struct cfg80211_bss_ies *ies;
5589 void *hdr;
5590 struct nlattr *bss;
5591 bool tsf = false;
5592
5593 ASSERT_WDEV_LOCK(wdev);
5594
5595 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5596 NL80211_CMD_NEW_SCAN_RESULTS);
5597 if (!hdr)
5598 return -1;
5599
5600 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5601
5602 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5603 goto nla_put_failure;
5604 if (wdev->netdev &&
5605 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5606 goto nla_put_failure;
5607 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5608 goto nla_put_failure;
5609
5610 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5611 if (!bss)
5612 goto nla_put_failure;
5613 if ((!is_zero_ether_addr(res->bssid) &&
5614 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5615 goto nla_put_failure;
5616
5617 rcu_read_lock();
5618 ies = rcu_dereference(res->ies);
5619 if (ies) {
5620 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5621 goto fail_unlock_rcu;
5622 tsf = true;
5623 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5624 ies->len, ies->data))
5625 goto fail_unlock_rcu;
5626 }
5627 ies = rcu_dereference(res->beacon_ies);
5628 if (ies) {
5629 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5630 goto fail_unlock_rcu;
5631 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5632 ies->len, ies->data))
5633 goto fail_unlock_rcu;
5634 }
5635 rcu_read_unlock();
5636
5637 if (res->beacon_interval &&
5638 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5639 goto nla_put_failure;
5640 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5641 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5642 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5643 jiffies_to_msecs(jiffies - intbss->ts)))
5644 goto nla_put_failure;
5645
5646 switch (rdev->wiphy.signal_type) {
5647 case CFG80211_SIGNAL_TYPE_MBM:
5648 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5649 goto nla_put_failure;
5650 break;
5651 case CFG80211_SIGNAL_TYPE_UNSPEC:
5652 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5653 goto nla_put_failure;
5654 break;
5655 default:
5656 break;
5657 }
5658
5659 switch (wdev->iftype) {
5660 case NL80211_IFTYPE_P2P_CLIENT:
5661 case NL80211_IFTYPE_STATION:
5662 if (intbss == wdev->current_bss &&
5663 nla_put_u32(msg, NL80211_BSS_STATUS,
5664 NL80211_BSS_STATUS_ASSOCIATED))
5665 goto nla_put_failure;
5666 break;
5667 case NL80211_IFTYPE_ADHOC:
5668 if (intbss == wdev->current_bss &&
5669 nla_put_u32(msg, NL80211_BSS_STATUS,
5670 NL80211_BSS_STATUS_IBSS_JOINED))
5671 goto nla_put_failure;
5672 break;
5673 default:
5674 break;
5675 }
5676
5677 nla_nest_end(msg, bss);
5678
5679 return genlmsg_end(msg, hdr);
5680
5681 fail_unlock_rcu:
5682 rcu_read_unlock();
5683 nla_put_failure:
5684 genlmsg_cancel(msg, hdr);
5685 return -EMSGSIZE;
5686 }
5687
5688 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5689 {
5690 struct cfg80211_registered_device *rdev;
5691 struct cfg80211_internal_bss *scan;
5692 struct wireless_dev *wdev;
5693 int start = cb->args[2], idx = 0;
5694 int err;
5695
5696 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5697 if (err)
5698 return err;
5699
5700 wdev_lock(wdev);
5701 spin_lock_bh(&rdev->bss_lock);
5702 cfg80211_bss_expire(rdev);
5703
5704 cb->seq = rdev->bss_generation;
5705
5706 list_for_each_entry(scan, &rdev->bss_list, list) {
5707 if (++idx <= start)
5708 continue;
5709 if (nl80211_send_bss(skb, cb,
5710 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5711 rdev, wdev, scan) < 0) {
5712 idx--;
5713 break;
5714 }
5715 }
5716
5717 spin_unlock_bh(&rdev->bss_lock);
5718 wdev_unlock(wdev);
5719
5720 cb->args[2] = idx;
5721 nl80211_finish_wdev_dump(rdev);
5722
5723 return skb->len;
5724 }
5725
5726 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5727 int flags, struct net_device *dev,
5728 struct survey_info *survey)
5729 {
5730 void *hdr;
5731 struct nlattr *infoattr;
5732
5733 hdr = nl80211hdr_put(msg, portid, seq, flags,
5734 NL80211_CMD_NEW_SURVEY_RESULTS);
5735 if (!hdr)
5736 return -ENOMEM;
5737
5738 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5739 goto nla_put_failure;
5740
5741 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5742 if (!infoattr)
5743 goto nla_put_failure;
5744
5745 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5746 survey->channel->center_freq))
5747 goto nla_put_failure;
5748
5749 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5750 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5751 goto nla_put_failure;
5752 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5753 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5754 goto nla_put_failure;
5755 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5756 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5757 survey->channel_time))
5758 goto nla_put_failure;
5759 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5760 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5761 survey->channel_time_busy))
5762 goto nla_put_failure;
5763 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5764 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5765 survey->channel_time_ext_busy))
5766 goto nla_put_failure;
5767 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5768 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5769 survey->channel_time_rx))
5770 goto nla_put_failure;
5771 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5772 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5773 survey->channel_time_tx))
5774 goto nla_put_failure;
5775
5776 nla_nest_end(msg, infoattr);
5777
5778 return genlmsg_end(msg, hdr);
5779
5780 nla_put_failure:
5781 genlmsg_cancel(msg, hdr);
5782 return -EMSGSIZE;
5783 }
5784
5785 static int nl80211_dump_survey(struct sk_buff *skb,
5786 struct netlink_callback *cb)
5787 {
5788 struct survey_info survey;
5789 struct cfg80211_registered_device *dev;
5790 struct wireless_dev *wdev;
5791 int survey_idx = cb->args[2];
5792 int res;
5793
5794 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5795 if (res)
5796 return res;
5797
5798 if (!wdev->netdev) {
5799 res = -EINVAL;
5800 goto out_err;
5801 }
5802
5803 if (!dev->ops->dump_survey) {
5804 res = -EOPNOTSUPP;
5805 goto out_err;
5806 }
5807
5808 while (1) {
5809 struct ieee80211_channel *chan;
5810
5811 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5812 if (res == -ENOENT)
5813 break;
5814 if (res)
5815 goto out_err;
5816
5817 /* Survey without a channel doesn't make sense */
5818 if (!survey.channel) {
5819 res = -EINVAL;
5820 goto out;
5821 }
5822
5823 chan = ieee80211_get_channel(&dev->wiphy,
5824 survey.channel->center_freq);
5825 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5826 survey_idx++;
5827 continue;
5828 }
5829
5830 if (nl80211_send_survey(skb,
5831 NETLINK_CB(cb->skb).portid,
5832 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5833 wdev->netdev, &survey) < 0)
5834 goto out;
5835 survey_idx++;
5836 }
5837
5838 out:
5839 cb->args[2] = survey_idx;
5840 res = skb->len;
5841 out_err:
5842 nl80211_finish_wdev_dump(dev);
5843 return res;
5844 }
5845
5846 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5847 {
5848 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5849 NL80211_WPA_VERSION_2));
5850 }
5851
5852 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5853 {
5854 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5855 struct net_device *dev = info->user_ptr[1];
5856 struct ieee80211_channel *chan;
5857 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5858 int err, ssid_len, ie_len = 0, sae_data_len = 0;
5859 enum nl80211_auth_type auth_type;
5860 struct key_parse key;
5861 bool local_state_change;
5862
5863 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5864 return -EINVAL;
5865
5866 if (!info->attrs[NL80211_ATTR_MAC])
5867 return -EINVAL;
5868
5869 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5870 return -EINVAL;
5871
5872 if (!info->attrs[NL80211_ATTR_SSID])
5873 return -EINVAL;
5874
5875 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5876 return -EINVAL;
5877
5878 err = nl80211_parse_key(info, &key);
5879 if (err)
5880 return err;
5881
5882 if (key.idx >= 0) {
5883 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5884 return -EINVAL;
5885 if (!key.p.key || !key.p.key_len)
5886 return -EINVAL;
5887 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5888 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5889 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5890 key.p.key_len != WLAN_KEY_LEN_WEP104))
5891 return -EINVAL;
5892 if (key.idx > 4)
5893 return -EINVAL;
5894 } else {
5895 key.p.key_len = 0;
5896 key.p.key = NULL;
5897 }
5898
5899 if (key.idx >= 0) {
5900 int i;
5901 bool ok = false;
5902 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5903 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5904 ok = true;
5905 break;
5906 }
5907 }
5908 if (!ok)
5909 return -EINVAL;
5910 }
5911
5912 if (!rdev->ops->auth)
5913 return -EOPNOTSUPP;
5914
5915 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5916 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5917 return -EOPNOTSUPP;
5918
5919 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5920 chan = ieee80211_get_channel(&rdev->wiphy,
5921 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5922 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5923 return -EINVAL;
5924
5925 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5926 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5927
5928 if (info->attrs[NL80211_ATTR_IE]) {
5929 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5930 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5931 }
5932
5933 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5934 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5935 return -EINVAL;
5936
5937 if (auth_type == NL80211_AUTHTYPE_SAE &&
5938 !info->attrs[NL80211_ATTR_SAE_DATA])
5939 return -EINVAL;
5940
5941 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5942 if (auth_type != NL80211_AUTHTYPE_SAE)
5943 return -EINVAL;
5944 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5945 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5946 /* need to include at least Auth Transaction and Status Code */
5947 if (sae_data_len < 4)
5948 return -EINVAL;
5949 }
5950
5951 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5952
5953 /*
5954 * Since we no longer track auth state, ignore
5955 * requests to only change local state.
5956 */
5957 if (local_state_change)
5958 return 0;
5959
5960 wdev_lock(dev->ieee80211_ptr);
5961 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5962 ssid, ssid_len, ie, ie_len,
5963 key.p.key, key.p.key_len, key.idx,
5964 sae_data, sae_data_len);
5965 wdev_unlock(dev->ieee80211_ptr);
5966 return err;
5967 }
5968
5969 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5970 struct genl_info *info,
5971 struct cfg80211_crypto_settings *settings,
5972 int cipher_limit)
5973 {
5974 memset(settings, 0, sizeof(*settings));
5975
5976 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5977
5978 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5979 u16 proto;
5980 proto = nla_get_u16(
5981 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5982 settings->control_port_ethertype = cpu_to_be16(proto);
5983 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5984 proto != ETH_P_PAE)
5985 return -EINVAL;
5986 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5987 settings->control_port_no_encrypt = true;
5988 } else
5989 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5990
5991 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5992 void *data;
5993 int len, i;
5994
5995 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5996 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5997 settings->n_ciphers_pairwise = len / sizeof(u32);
5998
5999 if (len % sizeof(u32))
6000 return -EINVAL;
6001
6002 if (settings->n_ciphers_pairwise > cipher_limit)
6003 return -EINVAL;
6004
6005 memcpy(settings->ciphers_pairwise, data, len);
6006
6007 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6008 if (!cfg80211_supported_cipher_suite(
6009 &rdev->wiphy,
6010 settings->ciphers_pairwise[i]))
6011 return -EINVAL;
6012 }
6013
6014 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6015 settings->cipher_group =
6016 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6017 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6018 settings->cipher_group))
6019 return -EINVAL;
6020 }
6021
6022 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6023 settings->wpa_versions =
6024 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6025 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6026 return -EINVAL;
6027 }
6028
6029 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6030 void *data;
6031 int len;
6032
6033 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6034 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6035 settings->n_akm_suites = len / sizeof(u32);
6036
6037 if (len % sizeof(u32))
6038 return -EINVAL;
6039
6040 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6041 return -EINVAL;
6042
6043 memcpy(settings->akm_suites, data, len);
6044 }
6045
6046 return 0;
6047 }
6048
6049 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6050 {
6051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6052 struct net_device *dev = info->user_ptr[1];
6053 struct ieee80211_channel *chan;
6054 struct cfg80211_assoc_request req = {};
6055 const u8 *bssid, *ssid;
6056 int err, ssid_len = 0;
6057
6058 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6059 return -EINVAL;
6060
6061 if (!info->attrs[NL80211_ATTR_MAC] ||
6062 !info->attrs[NL80211_ATTR_SSID] ||
6063 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6064 return -EINVAL;
6065
6066 if (!rdev->ops->assoc)
6067 return -EOPNOTSUPP;
6068
6069 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6070 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6071 return -EOPNOTSUPP;
6072
6073 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6074
6075 chan = ieee80211_get_channel(&rdev->wiphy,
6076 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6077 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6078 return -EINVAL;
6079
6080 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6081 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6082
6083 if (info->attrs[NL80211_ATTR_IE]) {
6084 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6085 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6086 }
6087
6088 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6089 enum nl80211_mfp mfp =
6090 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6091 if (mfp == NL80211_MFP_REQUIRED)
6092 req.use_mfp = true;
6093 else if (mfp != NL80211_MFP_NO)
6094 return -EINVAL;
6095 }
6096
6097 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6098 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6099
6100 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6101 req.flags |= ASSOC_REQ_DISABLE_HT;
6102
6103 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6104 memcpy(&req.ht_capa_mask,
6105 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6106 sizeof(req.ht_capa_mask));
6107
6108 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6109 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6110 return -EINVAL;
6111 memcpy(&req.ht_capa,
6112 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6113 sizeof(req.ht_capa));
6114 }
6115
6116 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6117 req.flags |= ASSOC_REQ_DISABLE_VHT;
6118
6119 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6120 memcpy(&req.vht_capa_mask,
6121 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6122 sizeof(req.vht_capa_mask));
6123
6124 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6125 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6126 return -EINVAL;
6127 memcpy(&req.vht_capa,
6128 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6129 sizeof(req.vht_capa));
6130 }
6131
6132 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6133 if (!err) {
6134 wdev_lock(dev->ieee80211_ptr);
6135 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6136 ssid, ssid_len, &req);
6137 wdev_unlock(dev->ieee80211_ptr);
6138 }
6139
6140 return err;
6141 }
6142
6143 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6144 {
6145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6146 struct net_device *dev = info->user_ptr[1];
6147 const u8 *ie = NULL, *bssid;
6148 int ie_len = 0, err;
6149 u16 reason_code;
6150 bool local_state_change;
6151
6152 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6153 return -EINVAL;
6154
6155 if (!info->attrs[NL80211_ATTR_MAC])
6156 return -EINVAL;
6157
6158 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6159 return -EINVAL;
6160
6161 if (!rdev->ops->deauth)
6162 return -EOPNOTSUPP;
6163
6164 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6165 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6166 return -EOPNOTSUPP;
6167
6168 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6169
6170 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6171 if (reason_code == 0) {
6172 /* Reason Code 0 is reserved */
6173 return -EINVAL;
6174 }
6175
6176 if (info->attrs[NL80211_ATTR_IE]) {
6177 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6178 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6179 }
6180
6181 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6182
6183 wdev_lock(dev->ieee80211_ptr);
6184 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6185 local_state_change);
6186 wdev_unlock(dev->ieee80211_ptr);
6187 return err;
6188 }
6189
6190 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6191 {
6192 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6193 struct net_device *dev = info->user_ptr[1];
6194 const u8 *ie = NULL, *bssid;
6195 int ie_len = 0, err;
6196 u16 reason_code;
6197 bool local_state_change;
6198
6199 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6200 return -EINVAL;
6201
6202 if (!info->attrs[NL80211_ATTR_MAC])
6203 return -EINVAL;
6204
6205 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6206 return -EINVAL;
6207
6208 if (!rdev->ops->disassoc)
6209 return -EOPNOTSUPP;
6210
6211 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6212 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6213 return -EOPNOTSUPP;
6214
6215 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6216
6217 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6218 if (reason_code == 0) {
6219 /* Reason Code 0 is reserved */
6220 return -EINVAL;
6221 }
6222
6223 if (info->attrs[NL80211_ATTR_IE]) {
6224 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6225 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6226 }
6227
6228 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6229
6230 wdev_lock(dev->ieee80211_ptr);
6231 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6232 local_state_change);
6233 wdev_unlock(dev->ieee80211_ptr);
6234 return err;
6235 }
6236
6237 static bool
6238 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6239 int mcast_rate[IEEE80211_NUM_BANDS],
6240 int rateval)
6241 {
6242 struct wiphy *wiphy = &rdev->wiphy;
6243 bool found = false;
6244 int band, i;
6245
6246 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6247 struct ieee80211_supported_band *sband;
6248
6249 sband = wiphy->bands[band];
6250 if (!sband)
6251 continue;
6252
6253 for (i = 0; i < sband->n_bitrates; i++) {
6254 if (sband->bitrates[i].bitrate == rateval) {
6255 mcast_rate[band] = i + 1;
6256 found = true;
6257 break;
6258 }
6259 }
6260 }
6261
6262 return found;
6263 }
6264
6265 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6266 {
6267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6268 struct net_device *dev = info->user_ptr[1];
6269 struct cfg80211_ibss_params ibss;
6270 struct wiphy *wiphy;
6271 struct cfg80211_cached_keys *connkeys = NULL;
6272 int err;
6273
6274 memset(&ibss, 0, sizeof(ibss));
6275
6276 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6277 return -EINVAL;
6278
6279 if (!info->attrs[NL80211_ATTR_SSID] ||
6280 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6281 return -EINVAL;
6282
6283 ibss.beacon_interval = 100;
6284
6285 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6286 ibss.beacon_interval =
6287 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6288 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6289 return -EINVAL;
6290 }
6291
6292 if (!rdev->ops->join_ibss)
6293 return -EOPNOTSUPP;
6294
6295 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6296 return -EOPNOTSUPP;
6297
6298 wiphy = &rdev->wiphy;
6299
6300 if (info->attrs[NL80211_ATTR_MAC]) {
6301 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6302
6303 if (!is_valid_ether_addr(ibss.bssid))
6304 return -EINVAL;
6305 }
6306 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6307 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6308
6309 if (info->attrs[NL80211_ATTR_IE]) {
6310 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6311 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6312 }
6313
6314 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6315 if (err)
6316 return err;
6317
6318 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6319 return -EINVAL;
6320
6321 switch (ibss.chandef.width) {
6322 case NL80211_CHAN_WIDTH_20_NOHT:
6323 break;
6324 case NL80211_CHAN_WIDTH_20:
6325 case NL80211_CHAN_WIDTH_40:
6326 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6327 break;
6328 default:
6329 return -EINVAL;
6330 }
6331
6332 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6333 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6334
6335 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6336 u8 *rates =
6337 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6338 int n_rates =
6339 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6340 struct ieee80211_supported_band *sband =
6341 wiphy->bands[ibss.chandef.chan->band];
6342
6343 err = ieee80211_get_ratemask(sband, rates, n_rates,
6344 &ibss.basic_rates);
6345 if (err)
6346 return err;
6347 }
6348
6349 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6350 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6351 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6352 return -EINVAL;
6353
6354 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6355 bool no_ht = false;
6356
6357 connkeys = nl80211_parse_connkeys(rdev,
6358 info->attrs[NL80211_ATTR_KEYS],
6359 &no_ht);
6360 if (IS_ERR(connkeys))
6361 return PTR_ERR(connkeys);
6362
6363 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6364 no_ht) {
6365 kfree(connkeys);
6366 return -EINVAL;
6367 }
6368 }
6369
6370 ibss.control_port =
6371 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6372
6373 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6374 if (err)
6375 kfree(connkeys);
6376 return err;
6377 }
6378
6379 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6380 {
6381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6382 struct net_device *dev = info->user_ptr[1];
6383
6384 if (!rdev->ops->leave_ibss)
6385 return -EOPNOTSUPP;
6386
6387 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6388 return -EOPNOTSUPP;
6389
6390 return cfg80211_leave_ibss(rdev, dev, false);
6391 }
6392
6393 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6394 {
6395 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6396 struct net_device *dev = info->user_ptr[1];
6397 int mcast_rate[IEEE80211_NUM_BANDS];
6398 u32 nla_rate;
6399 int err;
6400
6401 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6402 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6403 return -EOPNOTSUPP;
6404
6405 if (!rdev->ops->set_mcast_rate)
6406 return -EOPNOTSUPP;
6407
6408 memset(mcast_rate, 0, sizeof(mcast_rate));
6409
6410 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6411 return -EINVAL;
6412
6413 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6414 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6415 return -EINVAL;
6416
6417 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6418
6419 return err;
6420 }
6421
6422
6423 #ifdef CONFIG_NL80211_TESTMODE
6424 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6425 .name = "testmode",
6426 };
6427
6428 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6429 {
6430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6431 int err;
6432
6433 if (!info->attrs[NL80211_ATTR_TESTDATA])
6434 return -EINVAL;
6435
6436 err = -EOPNOTSUPP;
6437 if (rdev->ops->testmode_cmd) {
6438 rdev->testmode_info = info;
6439 err = rdev_testmode_cmd(rdev,
6440 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6441 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6442 rdev->testmode_info = NULL;
6443 }
6444
6445 return err;
6446 }
6447
6448 static int nl80211_testmode_dump(struct sk_buff *skb,
6449 struct netlink_callback *cb)
6450 {
6451 struct cfg80211_registered_device *rdev;
6452 int err;
6453 long phy_idx;
6454 void *data = NULL;
6455 int data_len = 0;
6456
6457 rtnl_lock();
6458
6459 if (cb->args[0]) {
6460 /*
6461 * 0 is a valid index, but not valid for args[0],
6462 * so we need to offset by 1.
6463 */
6464 phy_idx = cb->args[0] - 1;
6465 } else {
6466 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6467 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6468 nl80211_policy);
6469 if (err)
6470 goto out_err;
6471
6472 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6473 nl80211_fam.attrbuf);
6474 if (IS_ERR(rdev)) {
6475 err = PTR_ERR(rdev);
6476 goto out_err;
6477 }
6478 phy_idx = rdev->wiphy_idx;
6479 rdev = NULL;
6480
6481 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6482 cb->args[1] =
6483 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6484 }
6485
6486 if (cb->args[1]) {
6487 data = nla_data((void *)cb->args[1]);
6488 data_len = nla_len((void *)cb->args[1]);
6489 }
6490
6491 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6492 if (!rdev) {
6493 err = -ENOENT;
6494 goto out_err;
6495 }
6496
6497 if (!rdev->ops->testmode_dump) {
6498 err = -EOPNOTSUPP;
6499 goto out_err;
6500 }
6501
6502 while (1) {
6503 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6504 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6505 NL80211_CMD_TESTMODE);
6506 struct nlattr *tmdata;
6507
6508 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6509 genlmsg_cancel(skb, hdr);
6510 break;
6511 }
6512
6513 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6514 if (!tmdata) {
6515 genlmsg_cancel(skb, hdr);
6516 break;
6517 }
6518 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6519 nla_nest_end(skb, tmdata);
6520
6521 if (err == -ENOBUFS || err == -ENOENT) {
6522 genlmsg_cancel(skb, hdr);
6523 break;
6524 } else if (err) {
6525 genlmsg_cancel(skb, hdr);
6526 goto out_err;
6527 }
6528
6529 genlmsg_end(skb, hdr);
6530 }
6531
6532 err = skb->len;
6533 /* see above */
6534 cb->args[0] = phy_idx + 1;
6535 out_err:
6536 rtnl_unlock();
6537 return err;
6538 }
6539
6540 static struct sk_buff *
6541 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6542 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6543 {
6544 struct sk_buff *skb;
6545 void *hdr;
6546 struct nlattr *data;
6547
6548 skb = nlmsg_new(approxlen + 100, gfp);
6549 if (!skb)
6550 return NULL;
6551
6552 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6553 if (!hdr) {
6554 kfree_skb(skb);
6555 return NULL;
6556 }
6557
6558 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6559 goto nla_put_failure;
6560 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6561
6562 ((void **)skb->cb)[0] = rdev;
6563 ((void **)skb->cb)[1] = hdr;
6564 ((void **)skb->cb)[2] = data;
6565
6566 return skb;
6567
6568 nla_put_failure:
6569 kfree_skb(skb);
6570 return NULL;
6571 }
6572
6573 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6574 int approxlen)
6575 {
6576 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6577
6578 if (WARN_ON(!rdev->testmode_info))
6579 return NULL;
6580
6581 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6582 rdev->testmode_info->snd_portid,
6583 rdev->testmode_info->snd_seq,
6584 GFP_KERNEL);
6585 }
6586 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6587
6588 int cfg80211_testmode_reply(struct sk_buff *skb)
6589 {
6590 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6591 void *hdr = ((void **)skb->cb)[1];
6592 struct nlattr *data = ((void **)skb->cb)[2];
6593
6594 if (WARN_ON(!rdev->testmode_info)) {
6595 kfree_skb(skb);
6596 return -EINVAL;
6597 }
6598
6599 nla_nest_end(skb, data);
6600 genlmsg_end(skb, hdr);
6601 return genlmsg_reply(skb, rdev->testmode_info);
6602 }
6603 EXPORT_SYMBOL(cfg80211_testmode_reply);
6604
6605 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6606 int approxlen, gfp_t gfp)
6607 {
6608 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6609
6610 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6611 }
6612 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6613
6614 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6615 {
6616 void *hdr = ((void **)skb->cb)[1];
6617 struct nlattr *data = ((void **)skb->cb)[2];
6618
6619 nla_nest_end(skb, data);
6620 genlmsg_end(skb, hdr);
6621 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6622 }
6623 EXPORT_SYMBOL(cfg80211_testmode_event);
6624 #endif
6625
6626 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6627 {
6628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6629 struct net_device *dev = info->user_ptr[1];
6630 struct cfg80211_connect_params connect;
6631 struct wiphy *wiphy;
6632 struct cfg80211_cached_keys *connkeys = NULL;
6633 int err;
6634
6635 memset(&connect, 0, sizeof(connect));
6636
6637 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6638 return -EINVAL;
6639
6640 if (!info->attrs[NL80211_ATTR_SSID] ||
6641 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6642 return -EINVAL;
6643
6644 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6645 connect.auth_type =
6646 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6647 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6648 NL80211_CMD_CONNECT))
6649 return -EINVAL;
6650 } else
6651 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6652
6653 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6654
6655 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6656 NL80211_MAX_NR_CIPHER_SUITES);
6657 if (err)
6658 return err;
6659
6660 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6661 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6662 return -EOPNOTSUPP;
6663
6664 wiphy = &rdev->wiphy;
6665
6666 connect.bg_scan_period = -1;
6667 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6668 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6669 connect.bg_scan_period =
6670 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6671 }
6672
6673 if (info->attrs[NL80211_ATTR_MAC])
6674 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6675 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6676 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6677
6678 if (info->attrs[NL80211_ATTR_IE]) {
6679 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6680 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6681 }
6682
6683 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6684 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6685 if (connect.mfp != NL80211_MFP_REQUIRED &&
6686 connect.mfp != NL80211_MFP_NO)
6687 return -EINVAL;
6688 } else {
6689 connect.mfp = NL80211_MFP_NO;
6690 }
6691
6692 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6693 connect.channel =
6694 ieee80211_get_channel(wiphy,
6695 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6696 if (!connect.channel ||
6697 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6698 return -EINVAL;
6699 }
6700
6701 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6702 connkeys = nl80211_parse_connkeys(rdev,
6703 info->attrs[NL80211_ATTR_KEYS], NULL);
6704 if (IS_ERR(connkeys))
6705 return PTR_ERR(connkeys);
6706 }
6707
6708 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6709 connect.flags |= ASSOC_REQ_DISABLE_HT;
6710
6711 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6712 memcpy(&connect.ht_capa_mask,
6713 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6714 sizeof(connect.ht_capa_mask));
6715
6716 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6717 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6718 kfree(connkeys);
6719 return -EINVAL;
6720 }
6721 memcpy(&connect.ht_capa,
6722 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6723 sizeof(connect.ht_capa));
6724 }
6725
6726 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6727 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6728
6729 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6730 memcpy(&connect.vht_capa_mask,
6731 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6732 sizeof(connect.vht_capa_mask));
6733
6734 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6735 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6736 kfree(connkeys);
6737 return -EINVAL;
6738 }
6739 memcpy(&connect.vht_capa,
6740 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6741 sizeof(connect.vht_capa));
6742 }
6743
6744 wdev_lock(dev->ieee80211_ptr);
6745 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6746 wdev_unlock(dev->ieee80211_ptr);
6747 if (err)
6748 kfree(connkeys);
6749 return err;
6750 }
6751
6752 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6753 {
6754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6755 struct net_device *dev = info->user_ptr[1];
6756 u16 reason;
6757 int ret;
6758
6759 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6760 reason = WLAN_REASON_DEAUTH_LEAVING;
6761 else
6762 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6763
6764 if (reason == 0)
6765 return -EINVAL;
6766
6767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6768 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6769 return -EOPNOTSUPP;
6770
6771 wdev_lock(dev->ieee80211_ptr);
6772 ret = cfg80211_disconnect(rdev, dev, reason, true);
6773 wdev_unlock(dev->ieee80211_ptr);
6774 return ret;
6775 }
6776
6777 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6778 {
6779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6780 struct net *net;
6781 int err;
6782 u32 pid;
6783
6784 if (!info->attrs[NL80211_ATTR_PID])
6785 return -EINVAL;
6786
6787 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6788
6789 net = get_net_ns_by_pid(pid);
6790 if (IS_ERR(net))
6791 return PTR_ERR(net);
6792
6793 err = 0;
6794
6795 /* check if anything to do */
6796 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6797 err = cfg80211_switch_netns(rdev, net);
6798
6799 put_net(net);
6800 return err;
6801 }
6802
6803 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6804 {
6805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6806 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6807 struct cfg80211_pmksa *pmksa) = NULL;
6808 struct net_device *dev = info->user_ptr[1];
6809 struct cfg80211_pmksa pmksa;
6810
6811 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6812
6813 if (!info->attrs[NL80211_ATTR_MAC])
6814 return -EINVAL;
6815
6816 if (!info->attrs[NL80211_ATTR_PMKID])
6817 return -EINVAL;
6818
6819 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6820 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6821
6822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6824 return -EOPNOTSUPP;
6825
6826 switch (info->genlhdr->cmd) {
6827 case NL80211_CMD_SET_PMKSA:
6828 rdev_ops = rdev->ops->set_pmksa;
6829 break;
6830 case NL80211_CMD_DEL_PMKSA:
6831 rdev_ops = rdev->ops->del_pmksa;
6832 break;
6833 default:
6834 WARN_ON(1);
6835 break;
6836 }
6837
6838 if (!rdev_ops)
6839 return -EOPNOTSUPP;
6840
6841 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6842 }
6843
6844 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6845 {
6846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6847 struct net_device *dev = info->user_ptr[1];
6848
6849 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6850 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6851 return -EOPNOTSUPP;
6852
6853 if (!rdev->ops->flush_pmksa)
6854 return -EOPNOTSUPP;
6855
6856 return rdev_flush_pmksa(rdev, dev);
6857 }
6858
6859 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6860 {
6861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6862 struct net_device *dev = info->user_ptr[1];
6863 u8 action_code, dialog_token;
6864 u16 status_code;
6865 u8 *peer;
6866
6867 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6868 !rdev->ops->tdls_mgmt)
6869 return -EOPNOTSUPP;
6870
6871 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6872 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6873 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6874 !info->attrs[NL80211_ATTR_IE] ||
6875 !info->attrs[NL80211_ATTR_MAC])
6876 return -EINVAL;
6877
6878 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6879 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6880 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6881 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6882
6883 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6884 dialog_token, status_code,
6885 nla_data(info->attrs[NL80211_ATTR_IE]),
6886 nla_len(info->attrs[NL80211_ATTR_IE]));
6887 }
6888
6889 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6890 {
6891 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6892 struct net_device *dev = info->user_ptr[1];
6893 enum nl80211_tdls_operation operation;
6894 u8 *peer;
6895
6896 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6897 !rdev->ops->tdls_oper)
6898 return -EOPNOTSUPP;
6899
6900 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6901 !info->attrs[NL80211_ATTR_MAC])
6902 return -EINVAL;
6903
6904 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6905 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6906
6907 return rdev_tdls_oper(rdev, dev, peer, operation);
6908 }
6909
6910 static int nl80211_remain_on_channel(struct sk_buff *skb,
6911 struct genl_info *info)
6912 {
6913 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6914 struct wireless_dev *wdev = info->user_ptr[1];
6915 struct cfg80211_chan_def chandef;
6916 struct sk_buff *msg;
6917 void *hdr;
6918 u64 cookie;
6919 u32 duration;
6920 int err;
6921
6922 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6923 !info->attrs[NL80211_ATTR_DURATION])
6924 return -EINVAL;
6925
6926 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6927
6928 if (!rdev->ops->remain_on_channel ||
6929 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6930 return -EOPNOTSUPP;
6931
6932 /*
6933 * We should be on that channel for at least a minimum amount of
6934 * time (10ms) but no longer than the driver supports.
6935 */
6936 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6937 duration > rdev->wiphy.max_remain_on_channel_duration)
6938 return -EINVAL;
6939
6940 err = nl80211_parse_chandef(rdev, info, &chandef);
6941 if (err)
6942 return err;
6943
6944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6945 if (!msg)
6946 return -ENOMEM;
6947
6948 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6949 NL80211_CMD_REMAIN_ON_CHANNEL);
6950
6951 if (IS_ERR(hdr)) {
6952 err = PTR_ERR(hdr);
6953 goto free_msg;
6954 }
6955
6956 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6957 duration, &cookie);
6958
6959 if (err)
6960 goto free_msg;
6961
6962 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6963 goto nla_put_failure;
6964
6965 genlmsg_end(msg, hdr);
6966
6967 return genlmsg_reply(msg, info);
6968
6969 nla_put_failure:
6970 err = -ENOBUFS;
6971 free_msg:
6972 nlmsg_free(msg);
6973 return err;
6974 }
6975
6976 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6977 struct genl_info *info)
6978 {
6979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6980 struct wireless_dev *wdev = info->user_ptr[1];
6981 u64 cookie;
6982
6983 if (!info->attrs[NL80211_ATTR_COOKIE])
6984 return -EINVAL;
6985
6986 if (!rdev->ops->cancel_remain_on_channel)
6987 return -EOPNOTSUPP;
6988
6989 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6990
6991 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6992 }
6993
6994 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6995 u8 *rates, u8 rates_len)
6996 {
6997 u8 i;
6998 u32 mask = 0;
6999
7000 for (i = 0; i < rates_len; i++) {
7001 int rate = (rates[i] & 0x7f) * 5;
7002 int ridx;
7003 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7004 struct ieee80211_rate *srate =
7005 &sband->bitrates[ridx];
7006 if (rate == srate->bitrate) {
7007 mask |= 1 << ridx;
7008 break;
7009 }
7010 }
7011 if (ridx == sband->n_bitrates)
7012 return 0; /* rate not found */
7013 }
7014
7015 return mask;
7016 }
7017
7018 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7019 u8 *rates, u8 rates_len,
7020 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7021 {
7022 u8 i;
7023
7024 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7025
7026 for (i = 0; i < rates_len; i++) {
7027 int ridx, rbit;
7028
7029 ridx = rates[i] / 8;
7030 rbit = BIT(rates[i] % 8);
7031
7032 /* check validity */
7033 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7034 return false;
7035
7036 /* check availability */
7037 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7038 mcs[ridx] |= rbit;
7039 else
7040 return false;
7041 }
7042
7043 return true;
7044 }
7045
7046 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7047 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7048 .len = NL80211_MAX_SUPP_RATES },
7049 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7050 .len = NL80211_MAX_SUPP_HT_RATES },
7051 };
7052
7053 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7054 struct genl_info *info)
7055 {
7056 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7058 struct cfg80211_bitrate_mask mask;
7059 int rem, i;
7060 struct net_device *dev = info->user_ptr[1];
7061 struct nlattr *tx_rates;
7062 struct ieee80211_supported_band *sband;
7063
7064 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7065 return -EINVAL;
7066
7067 if (!rdev->ops->set_bitrate_mask)
7068 return -EOPNOTSUPP;
7069
7070 memset(&mask, 0, sizeof(mask));
7071 /* Default to all rates enabled */
7072 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7073 sband = rdev->wiphy.bands[i];
7074 mask.control[i].legacy =
7075 sband ? (1 << sband->n_bitrates) - 1 : 0;
7076 if (sband)
7077 memcpy(mask.control[i].mcs,
7078 sband->ht_cap.mcs.rx_mask,
7079 sizeof(mask.control[i].mcs));
7080 else
7081 memset(mask.control[i].mcs, 0,
7082 sizeof(mask.control[i].mcs));
7083 }
7084
7085 /*
7086 * The nested attribute uses enum nl80211_band as the index. This maps
7087 * directly to the enum ieee80211_band values used in cfg80211.
7088 */
7089 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7090 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7091 {
7092 enum ieee80211_band band = nla_type(tx_rates);
7093 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7094 return -EINVAL;
7095 sband = rdev->wiphy.bands[band];
7096 if (sband == NULL)
7097 return -EINVAL;
7098 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7099 nla_len(tx_rates), nl80211_txattr_policy);
7100 if (tb[NL80211_TXRATE_LEGACY]) {
7101 mask.control[band].legacy = rateset_to_mask(
7102 sband,
7103 nla_data(tb[NL80211_TXRATE_LEGACY]),
7104 nla_len(tb[NL80211_TXRATE_LEGACY]));
7105 if ((mask.control[band].legacy == 0) &&
7106 nla_len(tb[NL80211_TXRATE_LEGACY]))
7107 return -EINVAL;
7108 }
7109 if (tb[NL80211_TXRATE_MCS]) {
7110 if (!ht_rateset_to_mask(
7111 sband,
7112 nla_data(tb[NL80211_TXRATE_MCS]),
7113 nla_len(tb[NL80211_TXRATE_MCS]),
7114 mask.control[band].mcs))
7115 return -EINVAL;
7116 }
7117
7118 if (mask.control[band].legacy == 0) {
7119 /* don't allow empty legacy rates if HT
7120 * is not even supported. */
7121 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7122 return -EINVAL;
7123
7124 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7125 if (mask.control[band].mcs[i])
7126 break;
7127
7128 /* legacy and mcs rates may not be both empty */
7129 if (i == IEEE80211_HT_MCS_MASK_LEN)
7130 return -EINVAL;
7131 }
7132 }
7133
7134 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7135 }
7136
7137 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7138 {
7139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7140 struct wireless_dev *wdev = info->user_ptr[1];
7141 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7142
7143 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7144 return -EINVAL;
7145
7146 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7147 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7148
7149 switch (wdev->iftype) {
7150 case NL80211_IFTYPE_STATION:
7151 case NL80211_IFTYPE_ADHOC:
7152 case NL80211_IFTYPE_P2P_CLIENT:
7153 case NL80211_IFTYPE_AP:
7154 case NL80211_IFTYPE_AP_VLAN:
7155 case NL80211_IFTYPE_MESH_POINT:
7156 case NL80211_IFTYPE_P2P_GO:
7157 case NL80211_IFTYPE_P2P_DEVICE:
7158 break;
7159 default:
7160 return -EOPNOTSUPP;
7161 }
7162
7163 /* not much point in registering if we can't reply */
7164 if (!rdev->ops->mgmt_tx)
7165 return -EOPNOTSUPP;
7166
7167 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7168 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7169 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7170 }
7171
7172 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7173 {
7174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175 struct wireless_dev *wdev = info->user_ptr[1];
7176 struct cfg80211_chan_def chandef;
7177 int err;
7178 void *hdr = NULL;
7179 u64 cookie;
7180 struct sk_buff *msg = NULL;
7181 unsigned int wait = 0;
7182 bool offchan, no_cck, dont_wait_for_ack;
7183
7184 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7185
7186 if (!info->attrs[NL80211_ATTR_FRAME])
7187 return -EINVAL;
7188
7189 if (!rdev->ops->mgmt_tx)
7190 return -EOPNOTSUPP;
7191
7192 switch (wdev->iftype) {
7193 case NL80211_IFTYPE_P2P_DEVICE:
7194 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7195 return -EINVAL;
7196 case NL80211_IFTYPE_STATION:
7197 case NL80211_IFTYPE_ADHOC:
7198 case NL80211_IFTYPE_P2P_CLIENT:
7199 case NL80211_IFTYPE_AP:
7200 case NL80211_IFTYPE_AP_VLAN:
7201 case NL80211_IFTYPE_MESH_POINT:
7202 case NL80211_IFTYPE_P2P_GO:
7203 break;
7204 default:
7205 return -EOPNOTSUPP;
7206 }
7207
7208 if (info->attrs[NL80211_ATTR_DURATION]) {
7209 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7210 return -EINVAL;
7211 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7212
7213 /*
7214 * We should wait on the channel for at least a minimum amount
7215 * of time (10ms) but no longer than the driver supports.
7216 */
7217 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7218 wait > rdev->wiphy.max_remain_on_channel_duration)
7219 return -EINVAL;
7220
7221 }
7222
7223 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7224
7225 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7226 return -EINVAL;
7227
7228 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7229
7230 /* get the channel if any has been specified, otherwise pass NULL to
7231 * the driver. The latter will use the current one
7232 */
7233 chandef.chan = NULL;
7234 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7235 err = nl80211_parse_chandef(rdev, info, &chandef);
7236 if (err)
7237 return err;
7238 }
7239
7240 if (!chandef.chan && offchan)
7241 return -EINVAL;
7242
7243 if (!dont_wait_for_ack) {
7244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7245 if (!msg)
7246 return -ENOMEM;
7247
7248 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7249 NL80211_CMD_FRAME);
7250
7251 if (IS_ERR(hdr)) {
7252 err = PTR_ERR(hdr);
7253 goto free_msg;
7254 }
7255 }
7256
7257 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7258 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7259 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7260 no_cck, dont_wait_for_ack, &cookie);
7261 if (err)
7262 goto free_msg;
7263
7264 if (msg) {
7265 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7266 goto nla_put_failure;
7267
7268 genlmsg_end(msg, hdr);
7269 return genlmsg_reply(msg, info);
7270 }
7271
7272 return 0;
7273
7274 nla_put_failure:
7275 err = -ENOBUFS;
7276 free_msg:
7277 nlmsg_free(msg);
7278 return err;
7279 }
7280
7281 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7282 {
7283 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7284 struct wireless_dev *wdev = info->user_ptr[1];
7285 u64 cookie;
7286
7287 if (!info->attrs[NL80211_ATTR_COOKIE])
7288 return -EINVAL;
7289
7290 if (!rdev->ops->mgmt_tx_cancel_wait)
7291 return -EOPNOTSUPP;
7292
7293 switch (wdev->iftype) {
7294 case NL80211_IFTYPE_STATION:
7295 case NL80211_IFTYPE_ADHOC:
7296 case NL80211_IFTYPE_P2P_CLIENT:
7297 case NL80211_IFTYPE_AP:
7298 case NL80211_IFTYPE_AP_VLAN:
7299 case NL80211_IFTYPE_P2P_GO:
7300 case NL80211_IFTYPE_P2P_DEVICE:
7301 break;
7302 default:
7303 return -EOPNOTSUPP;
7304 }
7305
7306 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7307
7308 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7309 }
7310
7311 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7312 {
7313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7314 struct wireless_dev *wdev;
7315 struct net_device *dev = info->user_ptr[1];
7316 u8 ps_state;
7317 bool state;
7318 int err;
7319
7320 if (!info->attrs[NL80211_ATTR_PS_STATE])
7321 return -EINVAL;
7322
7323 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7324
7325 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7326 return -EINVAL;
7327
7328 wdev = dev->ieee80211_ptr;
7329
7330 if (!rdev->ops->set_power_mgmt)
7331 return -EOPNOTSUPP;
7332
7333 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7334
7335 if (state == wdev->ps)
7336 return 0;
7337
7338 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7339 if (!err)
7340 wdev->ps = state;
7341 return err;
7342 }
7343
7344 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7345 {
7346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7347 enum nl80211_ps_state ps_state;
7348 struct wireless_dev *wdev;
7349 struct net_device *dev = info->user_ptr[1];
7350 struct sk_buff *msg;
7351 void *hdr;
7352 int err;
7353
7354 wdev = dev->ieee80211_ptr;
7355
7356 if (!rdev->ops->set_power_mgmt)
7357 return -EOPNOTSUPP;
7358
7359 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7360 if (!msg)
7361 return -ENOMEM;
7362
7363 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7364 NL80211_CMD_GET_POWER_SAVE);
7365 if (!hdr) {
7366 err = -ENOBUFS;
7367 goto free_msg;
7368 }
7369
7370 if (wdev->ps)
7371 ps_state = NL80211_PS_ENABLED;
7372 else
7373 ps_state = NL80211_PS_DISABLED;
7374
7375 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7376 goto nla_put_failure;
7377
7378 genlmsg_end(msg, hdr);
7379 return genlmsg_reply(msg, info);
7380
7381 nla_put_failure:
7382 err = -ENOBUFS;
7383 free_msg:
7384 nlmsg_free(msg);
7385 return err;
7386 }
7387
7388 static struct nla_policy
7389 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7390 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7391 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7392 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7393 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7394 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7395 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7396 };
7397
7398 static int nl80211_set_cqm_txe(struct genl_info *info,
7399 u32 rate, u32 pkts, u32 intvl)
7400 {
7401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7402 struct wireless_dev *wdev;
7403 struct net_device *dev = info->user_ptr[1];
7404
7405 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7406 return -EINVAL;
7407
7408 wdev = dev->ieee80211_ptr;
7409
7410 if (!rdev->ops->set_cqm_txe_config)
7411 return -EOPNOTSUPP;
7412
7413 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7414 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7415 return -EOPNOTSUPP;
7416
7417 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7418 }
7419
7420 static int nl80211_set_cqm_rssi(struct genl_info *info,
7421 s32 threshold, u32 hysteresis)
7422 {
7423 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7424 struct wireless_dev *wdev;
7425 struct net_device *dev = info->user_ptr[1];
7426
7427 if (threshold > 0)
7428 return -EINVAL;
7429
7430 wdev = dev->ieee80211_ptr;
7431
7432 if (!rdev->ops->set_cqm_rssi_config)
7433 return -EOPNOTSUPP;
7434
7435 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7436 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7437 return -EOPNOTSUPP;
7438
7439 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7440 }
7441
7442 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7443 {
7444 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7445 struct nlattr *cqm;
7446 int err;
7447
7448 cqm = info->attrs[NL80211_ATTR_CQM];
7449 if (!cqm) {
7450 err = -EINVAL;
7451 goto out;
7452 }
7453
7454 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7455 nl80211_attr_cqm_policy);
7456 if (err)
7457 goto out;
7458
7459 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7460 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7461 s32 threshold;
7462 u32 hysteresis;
7463 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7464 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7465 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7466 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7467 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7468 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7469 u32 rate, pkts, intvl;
7470 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7471 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7472 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7473 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7474 } else
7475 err = -EINVAL;
7476
7477 out:
7478 return err;
7479 }
7480
7481 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7482 {
7483 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7484 struct net_device *dev = info->user_ptr[1];
7485 struct mesh_config cfg;
7486 struct mesh_setup setup;
7487 int err;
7488
7489 /* start with default */
7490 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7491 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7492
7493 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7494 /* and parse parameters if given */
7495 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7496 if (err)
7497 return err;
7498 }
7499
7500 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7501 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7502 return -EINVAL;
7503
7504 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7505 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7506
7507 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7508 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7509 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7510 return -EINVAL;
7511
7512 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7513 setup.beacon_interval =
7514 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7515 if (setup.beacon_interval < 10 ||
7516 setup.beacon_interval > 10000)
7517 return -EINVAL;
7518 }
7519
7520 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7521 setup.dtim_period =
7522 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7523 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7524 return -EINVAL;
7525 }
7526
7527 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7528 /* parse additional setup parameters if given */
7529 err = nl80211_parse_mesh_setup(info, &setup);
7530 if (err)
7531 return err;
7532 }
7533
7534 if (setup.user_mpm)
7535 cfg.auto_open_plinks = false;
7536
7537 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7538 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7539 if (err)
7540 return err;
7541 } else {
7542 /* cfg80211_join_mesh() will sort it out */
7543 setup.chandef.chan = NULL;
7544 }
7545
7546 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7547 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7548 int n_rates =
7549 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7550 struct ieee80211_supported_band *sband;
7551
7552 if (!setup.chandef.chan)
7553 return -EINVAL;
7554
7555 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7556
7557 err = ieee80211_get_ratemask(sband, rates, n_rates,
7558 &setup.basic_rates);
7559 if (err)
7560 return err;
7561 }
7562
7563 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7564 }
7565
7566 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7567 {
7568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7569 struct net_device *dev = info->user_ptr[1];
7570
7571 return cfg80211_leave_mesh(rdev, dev);
7572 }
7573
7574 #ifdef CONFIG_PM
7575 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7576 struct cfg80211_registered_device *rdev)
7577 {
7578 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7579 struct nlattr *nl_pats, *nl_pat;
7580 int i, pat_len;
7581
7582 if (!wowlan->n_patterns)
7583 return 0;
7584
7585 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7586 if (!nl_pats)
7587 return -ENOBUFS;
7588
7589 for (i = 0; i < wowlan->n_patterns; i++) {
7590 nl_pat = nla_nest_start(msg, i + 1);
7591 if (!nl_pat)
7592 return -ENOBUFS;
7593 pat_len = wowlan->patterns[i].pattern_len;
7594 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7595 DIV_ROUND_UP(pat_len, 8),
7596 wowlan->patterns[i].mask) ||
7597 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7598 pat_len, wowlan->patterns[i].pattern) ||
7599 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7600 wowlan->patterns[i].pkt_offset))
7601 return -ENOBUFS;
7602 nla_nest_end(msg, nl_pat);
7603 }
7604 nla_nest_end(msg, nl_pats);
7605
7606 return 0;
7607 }
7608
7609 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7610 struct cfg80211_wowlan_tcp *tcp)
7611 {
7612 struct nlattr *nl_tcp;
7613
7614 if (!tcp)
7615 return 0;
7616
7617 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7618 if (!nl_tcp)
7619 return -ENOBUFS;
7620
7621 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7622 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7623 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7624 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7625 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7626 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7627 tcp->payload_len, tcp->payload) ||
7628 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7629 tcp->data_interval) ||
7630 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7631 tcp->wake_len, tcp->wake_data) ||
7632 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7633 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7634 return -ENOBUFS;
7635
7636 if (tcp->payload_seq.len &&
7637 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7638 sizeof(tcp->payload_seq), &tcp->payload_seq))
7639 return -ENOBUFS;
7640
7641 if (tcp->payload_tok.len &&
7642 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7643 sizeof(tcp->payload_tok) + tcp->tokens_size,
7644 &tcp->payload_tok))
7645 return -ENOBUFS;
7646
7647 nla_nest_end(msg, nl_tcp);
7648
7649 return 0;
7650 }
7651
7652 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7653 {
7654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7655 struct sk_buff *msg;
7656 void *hdr;
7657 u32 size = NLMSG_DEFAULT_SIZE;
7658
7659 if (!rdev->wiphy.wowlan)
7660 return -EOPNOTSUPP;
7661
7662 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7663 /* adjust size to have room for all the data */
7664 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7665 rdev->wiphy.wowlan_config->tcp->payload_len +
7666 rdev->wiphy.wowlan_config->tcp->wake_len +
7667 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7668 }
7669
7670 msg = nlmsg_new(size, GFP_KERNEL);
7671 if (!msg)
7672 return -ENOMEM;
7673
7674 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7675 NL80211_CMD_GET_WOWLAN);
7676 if (!hdr)
7677 goto nla_put_failure;
7678
7679 if (rdev->wiphy.wowlan_config) {
7680 struct nlattr *nl_wowlan;
7681
7682 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7683 if (!nl_wowlan)
7684 goto nla_put_failure;
7685
7686 if ((rdev->wiphy.wowlan_config->any &&
7687 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7688 (rdev->wiphy.wowlan_config->disconnect &&
7689 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7690 (rdev->wiphy.wowlan_config->magic_pkt &&
7691 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7692 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7693 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7694 (rdev->wiphy.wowlan_config->eap_identity_req &&
7695 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7696 (rdev->wiphy.wowlan_config->four_way_handshake &&
7697 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7698 (rdev->wiphy.wowlan_config->rfkill_release &&
7699 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7700 goto nla_put_failure;
7701
7702 if (nl80211_send_wowlan_patterns(msg, rdev))
7703 goto nla_put_failure;
7704
7705 if (nl80211_send_wowlan_tcp(msg,
7706 rdev->wiphy.wowlan_config->tcp))
7707 goto nla_put_failure;
7708
7709 nla_nest_end(msg, nl_wowlan);
7710 }
7711
7712 genlmsg_end(msg, hdr);
7713 return genlmsg_reply(msg, info);
7714
7715 nla_put_failure:
7716 nlmsg_free(msg);
7717 return -ENOBUFS;
7718 }
7719
7720 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7721 struct nlattr *attr,
7722 struct cfg80211_wowlan *trig)
7723 {
7724 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7725 struct cfg80211_wowlan_tcp *cfg;
7726 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7727 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7728 u32 size;
7729 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7730 int err, port;
7731
7732 if (!rdev->wiphy.wowlan->tcp)
7733 return -EINVAL;
7734
7735 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7736 nla_data(attr), nla_len(attr),
7737 nl80211_wowlan_tcp_policy);
7738 if (err)
7739 return err;
7740
7741 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7742 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7743 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7744 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7745 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7746 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7747 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7748 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7749 return -EINVAL;
7750
7751 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7752 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7753 return -EINVAL;
7754
7755 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7756 rdev->wiphy.wowlan->tcp->data_interval_max ||
7757 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7758 return -EINVAL;
7759
7760 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7761 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7762 return -EINVAL;
7763
7764 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7765 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7766 return -EINVAL;
7767
7768 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7769 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7770
7771 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7772 tokens_size = tokln - sizeof(*tok);
7773
7774 if (!tok->len || tokens_size % tok->len)
7775 return -EINVAL;
7776 if (!rdev->wiphy.wowlan->tcp->tok)
7777 return -EINVAL;
7778 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7779 return -EINVAL;
7780 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7781 return -EINVAL;
7782 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7783 return -EINVAL;
7784 if (tok->offset + tok->len > data_size)
7785 return -EINVAL;
7786 }
7787
7788 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7789 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7790 if (!rdev->wiphy.wowlan->tcp->seq)
7791 return -EINVAL;
7792 if (seq->len == 0 || seq->len > 4)
7793 return -EINVAL;
7794 if (seq->len + seq->offset > data_size)
7795 return -EINVAL;
7796 }
7797
7798 size = sizeof(*cfg);
7799 size += data_size;
7800 size += wake_size + wake_mask_size;
7801 size += tokens_size;
7802
7803 cfg = kzalloc(size, GFP_KERNEL);
7804 if (!cfg)
7805 return -ENOMEM;
7806 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7807 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7808 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7809 ETH_ALEN);
7810 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7811 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7812 else
7813 port = 0;
7814 #ifdef CONFIG_INET
7815 /* allocate a socket and port for it and use it */
7816 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7817 IPPROTO_TCP, &cfg->sock, 1);
7818 if (err) {
7819 kfree(cfg);
7820 return err;
7821 }
7822 if (inet_csk_get_port(cfg->sock->sk, port)) {
7823 sock_release(cfg->sock);
7824 kfree(cfg);
7825 return -EADDRINUSE;
7826 }
7827 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7828 #else
7829 if (!port) {
7830 kfree(cfg);
7831 return -EINVAL;
7832 }
7833 cfg->src_port = port;
7834 #endif
7835
7836 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7837 cfg->payload_len = data_size;
7838 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7839 memcpy((void *)cfg->payload,
7840 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7841 data_size);
7842 if (seq)
7843 cfg->payload_seq = *seq;
7844 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7845 cfg->wake_len = wake_size;
7846 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7847 memcpy((void *)cfg->wake_data,
7848 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7849 wake_size);
7850 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7851 data_size + wake_size;
7852 memcpy((void *)cfg->wake_mask,
7853 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7854 wake_mask_size);
7855 if (tok) {
7856 cfg->tokens_size = tokens_size;
7857 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7858 }
7859
7860 trig->tcp = cfg;
7861
7862 return 0;
7863 }
7864
7865 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7866 {
7867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7868 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7869 struct cfg80211_wowlan new_triggers = {};
7870 struct cfg80211_wowlan *ntrig;
7871 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7872 int err, i;
7873 bool prev_enabled = rdev->wiphy.wowlan_config;
7874
7875 if (!wowlan)
7876 return -EOPNOTSUPP;
7877
7878 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7879 cfg80211_rdev_free_wowlan(rdev);
7880 rdev->wiphy.wowlan_config = NULL;
7881 goto set_wakeup;
7882 }
7883
7884 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7885 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7886 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7887 nl80211_wowlan_policy);
7888 if (err)
7889 return err;
7890
7891 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7892 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7893 return -EINVAL;
7894 new_triggers.any = true;
7895 }
7896
7897 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7898 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7899 return -EINVAL;
7900 new_triggers.disconnect = true;
7901 }
7902
7903 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7904 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7905 return -EINVAL;
7906 new_triggers.magic_pkt = true;
7907 }
7908
7909 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7910 return -EINVAL;
7911
7912 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7913 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7914 return -EINVAL;
7915 new_triggers.gtk_rekey_failure = true;
7916 }
7917
7918 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7919 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7920 return -EINVAL;
7921 new_triggers.eap_identity_req = true;
7922 }
7923
7924 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7925 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7926 return -EINVAL;
7927 new_triggers.four_way_handshake = true;
7928 }
7929
7930 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7931 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7932 return -EINVAL;
7933 new_triggers.rfkill_release = true;
7934 }
7935
7936 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7937 struct nlattr *pat;
7938 int n_patterns = 0;
7939 int rem, pat_len, mask_len, pkt_offset;
7940 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7941
7942 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7943 rem)
7944 n_patterns++;
7945 if (n_patterns > wowlan->n_patterns)
7946 return -EINVAL;
7947
7948 new_triggers.patterns = kcalloc(n_patterns,
7949 sizeof(new_triggers.patterns[0]),
7950 GFP_KERNEL);
7951 if (!new_triggers.patterns)
7952 return -ENOMEM;
7953
7954 new_triggers.n_patterns = n_patterns;
7955 i = 0;
7956
7957 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7958 rem) {
7959 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7960 nla_data(pat), nla_len(pat), NULL);
7961 err = -EINVAL;
7962 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7963 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7964 goto error;
7965 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7966 mask_len = DIV_ROUND_UP(pat_len, 8);
7967 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7968 mask_len)
7969 goto error;
7970 if (pat_len > wowlan->pattern_max_len ||
7971 pat_len < wowlan->pattern_min_len)
7972 goto error;
7973
7974 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7975 pkt_offset = 0;
7976 else
7977 pkt_offset = nla_get_u32(
7978 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7979 if (pkt_offset > wowlan->max_pkt_offset)
7980 goto error;
7981 new_triggers.patterns[i].pkt_offset = pkt_offset;
7982
7983 new_triggers.patterns[i].mask =
7984 kmalloc(mask_len + pat_len, GFP_KERNEL);
7985 if (!new_triggers.patterns[i].mask) {
7986 err = -ENOMEM;
7987 goto error;
7988 }
7989 new_triggers.patterns[i].pattern =
7990 new_triggers.patterns[i].mask + mask_len;
7991 memcpy(new_triggers.patterns[i].mask,
7992 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7993 mask_len);
7994 new_triggers.patterns[i].pattern_len = pat_len;
7995 memcpy(new_triggers.patterns[i].pattern,
7996 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7997 pat_len);
7998 i++;
7999 }
8000 }
8001
8002 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8003 err = nl80211_parse_wowlan_tcp(
8004 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8005 &new_triggers);
8006 if (err)
8007 goto error;
8008 }
8009
8010 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8011 if (!ntrig) {
8012 err = -ENOMEM;
8013 goto error;
8014 }
8015 cfg80211_rdev_free_wowlan(rdev);
8016 rdev->wiphy.wowlan_config = ntrig;
8017
8018 set_wakeup:
8019 if (rdev->ops->set_wakeup &&
8020 prev_enabled != !!rdev->wiphy.wowlan_config)
8021 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8022
8023 return 0;
8024 error:
8025 for (i = 0; i < new_triggers.n_patterns; i++)
8026 kfree(new_triggers.patterns[i].mask);
8027 kfree(new_triggers.patterns);
8028 if (new_triggers.tcp && new_triggers.tcp->sock)
8029 sock_release(new_triggers.tcp->sock);
8030 kfree(new_triggers.tcp);
8031 return err;
8032 }
8033 #endif
8034
8035 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8036 {
8037 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8038 struct net_device *dev = info->user_ptr[1];
8039 struct wireless_dev *wdev = dev->ieee80211_ptr;
8040 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8041 struct cfg80211_gtk_rekey_data rekey_data;
8042 int err;
8043
8044 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8045 return -EINVAL;
8046
8047 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8048 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8049 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8050 nl80211_rekey_policy);
8051 if (err)
8052 return err;
8053
8054 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8055 return -ERANGE;
8056 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8057 return -ERANGE;
8058 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8059 return -ERANGE;
8060
8061 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8062 NL80211_KEK_LEN);
8063 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8064 NL80211_KCK_LEN);
8065 memcpy(rekey_data.replay_ctr,
8066 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8067 NL80211_REPLAY_CTR_LEN);
8068
8069 wdev_lock(wdev);
8070 if (!wdev->current_bss) {
8071 err = -ENOTCONN;
8072 goto out;
8073 }
8074
8075 if (!rdev->ops->set_rekey_data) {
8076 err = -EOPNOTSUPP;
8077 goto out;
8078 }
8079
8080 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8081 out:
8082 wdev_unlock(wdev);
8083 return err;
8084 }
8085
8086 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8087 struct genl_info *info)
8088 {
8089 struct net_device *dev = info->user_ptr[1];
8090 struct wireless_dev *wdev = dev->ieee80211_ptr;
8091
8092 if (wdev->iftype != NL80211_IFTYPE_AP &&
8093 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8094 return -EINVAL;
8095
8096 if (wdev->ap_unexpected_nlportid)
8097 return -EBUSY;
8098
8099 wdev->ap_unexpected_nlportid = info->snd_portid;
8100 return 0;
8101 }
8102
8103 static int nl80211_probe_client(struct sk_buff *skb,
8104 struct genl_info *info)
8105 {
8106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8107 struct net_device *dev = info->user_ptr[1];
8108 struct wireless_dev *wdev = dev->ieee80211_ptr;
8109 struct sk_buff *msg;
8110 void *hdr;
8111 const u8 *addr;
8112 u64 cookie;
8113 int err;
8114
8115 if (wdev->iftype != NL80211_IFTYPE_AP &&
8116 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8117 return -EOPNOTSUPP;
8118
8119 if (!info->attrs[NL80211_ATTR_MAC])
8120 return -EINVAL;
8121
8122 if (!rdev->ops->probe_client)
8123 return -EOPNOTSUPP;
8124
8125 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8126 if (!msg)
8127 return -ENOMEM;
8128
8129 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8130 NL80211_CMD_PROBE_CLIENT);
8131
8132 if (IS_ERR(hdr)) {
8133 err = PTR_ERR(hdr);
8134 goto free_msg;
8135 }
8136
8137 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8138
8139 err = rdev_probe_client(rdev, dev, addr, &cookie);
8140 if (err)
8141 goto free_msg;
8142
8143 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8144 goto nla_put_failure;
8145
8146 genlmsg_end(msg, hdr);
8147
8148 return genlmsg_reply(msg, info);
8149
8150 nla_put_failure:
8151 err = -ENOBUFS;
8152 free_msg:
8153 nlmsg_free(msg);
8154 return err;
8155 }
8156
8157 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8158 {
8159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8160 struct cfg80211_beacon_registration *reg, *nreg;
8161 int rv;
8162
8163 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8164 return -EOPNOTSUPP;
8165
8166 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8167 if (!nreg)
8168 return -ENOMEM;
8169
8170 /* First, check if already registered. */
8171 spin_lock_bh(&rdev->beacon_registrations_lock);
8172 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8173 if (reg->nlportid == info->snd_portid) {
8174 rv = -EALREADY;
8175 goto out_err;
8176 }
8177 }
8178 /* Add it to the list */
8179 nreg->nlportid = info->snd_portid;
8180 list_add(&nreg->list, &rdev->beacon_registrations);
8181
8182 spin_unlock_bh(&rdev->beacon_registrations_lock);
8183
8184 return 0;
8185 out_err:
8186 spin_unlock_bh(&rdev->beacon_registrations_lock);
8187 kfree(nreg);
8188 return rv;
8189 }
8190
8191 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8192 {
8193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8194 struct wireless_dev *wdev = info->user_ptr[1];
8195 int err;
8196
8197 if (!rdev->ops->start_p2p_device)
8198 return -EOPNOTSUPP;
8199
8200 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8201 return -EOPNOTSUPP;
8202
8203 if (wdev->p2p_started)
8204 return 0;
8205
8206 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8207 if (err)
8208 return err;
8209
8210 err = rdev_start_p2p_device(rdev, wdev);
8211 if (err)
8212 return err;
8213
8214 wdev->p2p_started = true;
8215 rdev->opencount++;
8216
8217 return 0;
8218 }
8219
8220 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8221 {
8222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8223 struct wireless_dev *wdev = info->user_ptr[1];
8224
8225 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8226 return -EOPNOTSUPP;
8227
8228 if (!rdev->ops->stop_p2p_device)
8229 return -EOPNOTSUPP;
8230
8231 cfg80211_stop_p2p_device(rdev, wdev);
8232
8233 return 0;
8234 }
8235
8236 static int nl80211_get_protocol_features(struct sk_buff *skb,
8237 struct genl_info *info)
8238 {
8239 void *hdr;
8240 struct sk_buff *msg;
8241
8242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8243 if (!msg)
8244 return -ENOMEM;
8245
8246 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8247 NL80211_CMD_GET_PROTOCOL_FEATURES);
8248 if (!hdr)
8249 goto nla_put_failure;
8250
8251 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8252 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8253 goto nla_put_failure;
8254
8255 genlmsg_end(msg, hdr);
8256 return genlmsg_reply(msg, info);
8257
8258 nla_put_failure:
8259 kfree_skb(msg);
8260 return -ENOBUFS;
8261 }
8262
8263 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8264 {
8265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8266 struct cfg80211_update_ft_ies_params ft_params;
8267 struct net_device *dev = info->user_ptr[1];
8268
8269 if (!rdev->ops->update_ft_ies)
8270 return -EOPNOTSUPP;
8271
8272 if (!info->attrs[NL80211_ATTR_MDID] ||
8273 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8274 return -EINVAL;
8275
8276 memset(&ft_params, 0, sizeof(ft_params));
8277 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8278 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8279 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8280
8281 return rdev_update_ft_ies(rdev, dev, &ft_params);
8282 }
8283
8284 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8285 struct genl_info *info)
8286 {
8287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8288 struct wireless_dev *wdev = info->user_ptr[1];
8289 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8290 u16 duration;
8291 int ret;
8292
8293 if (!rdev->ops->crit_proto_start)
8294 return -EOPNOTSUPP;
8295
8296 if (WARN_ON(!rdev->ops->crit_proto_stop))
8297 return -EINVAL;
8298
8299 if (rdev->crit_proto_nlportid)
8300 return -EBUSY;
8301
8302 /* determine protocol if provided */
8303 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8304 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8305
8306 if (proto >= NUM_NL80211_CRIT_PROTO)
8307 return -EINVAL;
8308
8309 /* timeout must be provided */
8310 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8311 return -EINVAL;
8312
8313 duration =
8314 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8315
8316 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8317 return -ERANGE;
8318
8319 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8320 if (!ret)
8321 rdev->crit_proto_nlportid = info->snd_portid;
8322
8323 return ret;
8324 }
8325
8326 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8327 struct genl_info *info)
8328 {
8329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8330 struct wireless_dev *wdev = info->user_ptr[1];
8331
8332 if (!rdev->ops->crit_proto_stop)
8333 return -EOPNOTSUPP;
8334
8335 if (rdev->crit_proto_nlportid) {
8336 rdev->crit_proto_nlportid = 0;
8337 rdev_crit_proto_stop(rdev, wdev);
8338 }
8339 return 0;
8340 }
8341
8342 #define NL80211_FLAG_NEED_WIPHY 0x01
8343 #define NL80211_FLAG_NEED_NETDEV 0x02
8344 #define NL80211_FLAG_NEED_RTNL 0x04
8345 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8346 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8347 NL80211_FLAG_CHECK_NETDEV_UP)
8348 #define NL80211_FLAG_NEED_WDEV 0x10
8349 /* If a netdev is associated, it must be UP, P2P must be started */
8350 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8351 NL80211_FLAG_CHECK_NETDEV_UP)
8352
8353 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8354 struct genl_info *info)
8355 {
8356 struct cfg80211_registered_device *rdev;
8357 struct wireless_dev *wdev;
8358 struct net_device *dev;
8359 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8360
8361 if (rtnl)
8362 rtnl_lock();
8363
8364 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8365 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8366 if (IS_ERR(rdev)) {
8367 if (rtnl)
8368 rtnl_unlock();
8369 return PTR_ERR(rdev);
8370 }
8371 info->user_ptr[0] = rdev;
8372 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8373 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8374 ASSERT_RTNL();
8375
8376 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8377 info->attrs);
8378 if (IS_ERR(wdev)) {
8379 if (rtnl)
8380 rtnl_unlock();
8381 return PTR_ERR(wdev);
8382 }
8383
8384 dev = wdev->netdev;
8385 rdev = wiphy_to_dev(wdev->wiphy);
8386
8387 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8388 if (!dev) {
8389 if (rtnl)
8390 rtnl_unlock();
8391 return -EINVAL;
8392 }
8393
8394 info->user_ptr[1] = dev;
8395 } else {
8396 info->user_ptr[1] = wdev;
8397 }
8398
8399 if (dev) {
8400 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8401 !netif_running(dev)) {
8402 if (rtnl)
8403 rtnl_unlock();
8404 return -ENETDOWN;
8405 }
8406
8407 dev_hold(dev);
8408 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8409 if (!wdev->p2p_started) {
8410 if (rtnl)
8411 rtnl_unlock();
8412 return -ENETDOWN;
8413 }
8414 }
8415
8416 info->user_ptr[0] = rdev;
8417 }
8418
8419 return 0;
8420 }
8421
8422 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8423 struct genl_info *info)
8424 {
8425 if (info->user_ptr[1]) {
8426 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8427 struct wireless_dev *wdev = info->user_ptr[1];
8428
8429 if (wdev->netdev)
8430 dev_put(wdev->netdev);
8431 } else {
8432 dev_put(info->user_ptr[1]);
8433 }
8434 }
8435 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8436 rtnl_unlock();
8437 }
8438
8439 static struct genl_ops nl80211_ops[] = {
8440 {
8441 .cmd = NL80211_CMD_GET_WIPHY,
8442 .doit = nl80211_get_wiphy,
8443 .dumpit = nl80211_dump_wiphy,
8444 .done = nl80211_dump_wiphy_done,
8445 .policy = nl80211_policy,
8446 /* can be retrieved by unprivileged users */
8447 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8448 NL80211_FLAG_NEED_RTNL,
8449 },
8450 {
8451 .cmd = NL80211_CMD_SET_WIPHY,
8452 .doit = nl80211_set_wiphy,
8453 .policy = nl80211_policy,
8454 .flags = GENL_ADMIN_PERM,
8455 .internal_flags = NL80211_FLAG_NEED_RTNL,
8456 },
8457 {
8458 .cmd = NL80211_CMD_GET_INTERFACE,
8459 .doit = nl80211_get_interface,
8460 .dumpit = nl80211_dump_interface,
8461 .policy = nl80211_policy,
8462 /* can be retrieved by unprivileged users */
8463 .internal_flags = NL80211_FLAG_NEED_WDEV |
8464 NL80211_FLAG_NEED_RTNL,
8465 },
8466 {
8467 .cmd = NL80211_CMD_SET_INTERFACE,
8468 .doit = nl80211_set_interface,
8469 .policy = nl80211_policy,
8470 .flags = GENL_ADMIN_PERM,
8471 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8472 NL80211_FLAG_NEED_RTNL,
8473 },
8474 {
8475 .cmd = NL80211_CMD_NEW_INTERFACE,
8476 .doit = nl80211_new_interface,
8477 .policy = nl80211_policy,
8478 .flags = GENL_ADMIN_PERM,
8479 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8480 NL80211_FLAG_NEED_RTNL,
8481 },
8482 {
8483 .cmd = NL80211_CMD_DEL_INTERFACE,
8484 .doit = nl80211_del_interface,
8485 .policy = nl80211_policy,
8486 .flags = GENL_ADMIN_PERM,
8487 .internal_flags = NL80211_FLAG_NEED_WDEV |
8488 NL80211_FLAG_NEED_RTNL,
8489 },
8490 {
8491 .cmd = NL80211_CMD_GET_KEY,
8492 .doit = nl80211_get_key,
8493 .policy = nl80211_policy,
8494 .flags = GENL_ADMIN_PERM,
8495 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8496 NL80211_FLAG_NEED_RTNL,
8497 },
8498 {
8499 .cmd = NL80211_CMD_SET_KEY,
8500 .doit = nl80211_set_key,
8501 .policy = nl80211_policy,
8502 .flags = GENL_ADMIN_PERM,
8503 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8504 NL80211_FLAG_NEED_RTNL,
8505 },
8506 {
8507 .cmd = NL80211_CMD_NEW_KEY,
8508 .doit = nl80211_new_key,
8509 .policy = nl80211_policy,
8510 .flags = GENL_ADMIN_PERM,
8511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8512 NL80211_FLAG_NEED_RTNL,
8513 },
8514 {
8515 .cmd = NL80211_CMD_DEL_KEY,
8516 .doit = nl80211_del_key,
8517 .policy = nl80211_policy,
8518 .flags = GENL_ADMIN_PERM,
8519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8520 NL80211_FLAG_NEED_RTNL,
8521 },
8522 {
8523 .cmd = NL80211_CMD_SET_BEACON,
8524 .policy = nl80211_policy,
8525 .flags = GENL_ADMIN_PERM,
8526 .doit = nl80211_set_beacon,
8527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8528 NL80211_FLAG_NEED_RTNL,
8529 },
8530 {
8531 .cmd = NL80211_CMD_START_AP,
8532 .policy = nl80211_policy,
8533 .flags = GENL_ADMIN_PERM,
8534 .doit = nl80211_start_ap,
8535 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8536 NL80211_FLAG_NEED_RTNL,
8537 },
8538 {
8539 .cmd = NL80211_CMD_STOP_AP,
8540 .policy = nl80211_policy,
8541 .flags = GENL_ADMIN_PERM,
8542 .doit = nl80211_stop_ap,
8543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8544 NL80211_FLAG_NEED_RTNL,
8545 },
8546 {
8547 .cmd = NL80211_CMD_GET_STATION,
8548 .doit = nl80211_get_station,
8549 .dumpit = nl80211_dump_station,
8550 .policy = nl80211_policy,
8551 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8552 NL80211_FLAG_NEED_RTNL,
8553 },
8554 {
8555 .cmd = NL80211_CMD_SET_STATION,
8556 .doit = nl80211_set_station,
8557 .policy = nl80211_policy,
8558 .flags = GENL_ADMIN_PERM,
8559 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8560 NL80211_FLAG_NEED_RTNL,
8561 },
8562 {
8563 .cmd = NL80211_CMD_NEW_STATION,
8564 .doit = nl80211_new_station,
8565 .policy = nl80211_policy,
8566 .flags = GENL_ADMIN_PERM,
8567 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8568 NL80211_FLAG_NEED_RTNL,
8569 },
8570 {
8571 .cmd = NL80211_CMD_DEL_STATION,
8572 .doit = nl80211_del_station,
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_GET_MPATH,
8580 .doit = nl80211_get_mpath,
8581 .dumpit = nl80211_dump_mpath,
8582 .policy = nl80211_policy,
8583 .flags = GENL_ADMIN_PERM,
8584 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8585 NL80211_FLAG_NEED_RTNL,
8586 },
8587 {
8588 .cmd = NL80211_CMD_SET_MPATH,
8589 .doit = nl80211_set_mpath,
8590 .policy = nl80211_policy,
8591 .flags = GENL_ADMIN_PERM,
8592 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8593 NL80211_FLAG_NEED_RTNL,
8594 },
8595 {
8596 .cmd = NL80211_CMD_NEW_MPATH,
8597 .doit = nl80211_new_mpath,
8598 .policy = nl80211_policy,
8599 .flags = GENL_ADMIN_PERM,
8600 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8601 NL80211_FLAG_NEED_RTNL,
8602 },
8603 {
8604 .cmd = NL80211_CMD_DEL_MPATH,
8605 .doit = nl80211_del_mpath,
8606 .policy = nl80211_policy,
8607 .flags = GENL_ADMIN_PERM,
8608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8609 NL80211_FLAG_NEED_RTNL,
8610 },
8611 {
8612 .cmd = NL80211_CMD_SET_BSS,
8613 .doit = nl80211_set_bss,
8614 .policy = nl80211_policy,
8615 .flags = GENL_ADMIN_PERM,
8616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8617 NL80211_FLAG_NEED_RTNL,
8618 },
8619 {
8620 .cmd = NL80211_CMD_GET_REG,
8621 .doit = nl80211_get_reg,
8622 .policy = nl80211_policy,
8623 .internal_flags = NL80211_FLAG_NEED_RTNL,
8624 /* can be retrieved by unprivileged users */
8625 },
8626 {
8627 .cmd = NL80211_CMD_SET_REG,
8628 .doit = nl80211_set_reg,
8629 .policy = nl80211_policy,
8630 .flags = GENL_ADMIN_PERM,
8631 .internal_flags = NL80211_FLAG_NEED_RTNL,
8632 },
8633 {
8634 .cmd = NL80211_CMD_REQ_SET_REG,
8635 .doit = nl80211_req_set_reg,
8636 .policy = nl80211_policy,
8637 .flags = GENL_ADMIN_PERM,
8638 },
8639 {
8640 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8641 .doit = nl80211_get_mesh_config,
8642 .policy = nl80211_policy,
8643 /* can be retrieved by unprivileged users */
8644 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8645 NL80211_FLAG_NEED_RTNL,
8646 },
8647 {
8648 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8649 .doit = nl80211_update_mesh_config,
8650 .policy = nl80211_policy,
8651 .flags = GENL_ADMIN_PERM,
8652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8653 NL80211_FLAG_NEED_RTNL,
8654 },
8655 {
8656 .cmd = NL80211_CMD_TRIGGER_SCAN,
8657 .doit = nl80211_trigger_scan,
8658 .policy = nl80211_policy,
8659 .flags = GENL_ADMIN_PERM,
8660 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8661 NL80211_FLAG_NEED_RTNL,
8662 },
8663 {
8664 .cmd = NL80211_CMD_GET_SCAN,
8665 .policy = nl80211_policy,
8666 .dumpit = nl80211_dump_scan,
8667 },
8668 {
8669 .cmd = NL80211_CMD_START_SCHED_SCAN,
8670 .doit = nl80211_start_sched_scan,
8671 .policy = nl80211_policy,
8672 .flags = GENL_ADMIN_PERM,
8673 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8674 NL80211_FLAG_NEED_RTNL,
8675 },
8676 {
8677 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8678 .doit = nl80211_stop_sched_scan,
8679 .policy = nl80211_policy,
8680 .flags = GENL_ADMIN_PERM,
8681 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8682 NL80211_FLAG_NEED_RTNL,
8683 },
8684 {
8685 .cmd = NL80211_CMD_AUTHENTICATE,
8686 .doit = nl80211_authenticate,
8687 .policy = nl80211_policy,
8688 .flags = GENL_ADMIN_PERM,
8689 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8690 NL80211_FLAG_NEED_RTNL,
8691 },
8692 {
8693 .cmd = NL80211_CMD_ASSOCIATE,
8694 .doit = nl80211_associate,
8695 .policy = nl80211_policy,
8696 .flags = GENL_ADMIN_PERM,
8697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8698 NL80211_FLAG_NEED_RTNL,
8699 },
8700 {
8701 .cmd = NL80211_CMD_DEAUTHENTICATE,
8702 .doit = nl80211_deauthenticate,
8703 .policy = nl80211_policy,
8704 .flags = GENL_ADMIN_PERM,
8705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8706 NL80211_FLAG_NEED_RTNL,
8707 },
8708 {
8709 .cmd = NL80211_CMD_DISASSOCIATE,
8710 .doit = nl80211_disassociate,
8711 .policy = nl80211_policy,
8712 .flags = GENL_ADMIN_PERM,
8713 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8714 NL80211_FLAG_NEED_RTNL,
8715 },
8716 {
8717 .cmd = NL80211_CMD_JOIN_IBSS,
8718 .doit = nl80211_join_ibss,
8719 .policy = nl80211_policy,
8720 .flags = GENL_ADMIN_PERM,
8721 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8722 NL80211_FLAG_NEED_RTNL,
8723 },
8724 {
8725 .cmd = NL80211_CMD_LEAVE_IBSS,
8726 .doit = nl80211_leave_ibss,
8727 .policy = nl80211_policy,
8728 .flags = GENL_ADMIN_PERM,
8729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8730 NL80211_FLAG_NEED_RTNL,
8731 },
8732 #ifdef CONFIG_NL80211_TESTMODE
8733 {
8734 .cmd = NL80211_CMD_TESTMODE,
8735 .doit = nl80211_testmode_do,
8736 .dumpit = nl80211_testmode_dump,
8737 .policy = nl80211_policy,
8738 .flags = GENL_ADMIN_PERM,
8739 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8740 NL80211_FLAG_NEED_RTNL,
8741 },
8742 #endif
8743 {
8744 .cmd = NL80211_CMD_CONNECT,
8745 .doit = nl80211_connect,
8746 .policy = nl80211_policy,
8747 .flags = GENL_ADMIN_PERM,
8748 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8749 NL80211_FLAG_NEED_RTNL,
8750 },
8751 {
8752 .cmd = NL80211_CMD_DISCONNECT,
8753 .doit = nl80211_disconnect,
8754 .policy = nl80211_policy,
8755 .flags = GENL_ADMIN_PERM,
8756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8757 NL80211_FLAG_NEED_RTNL,
8758 },
8759 {
8760 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8761 .doit = nl80211_wiphy_netns,
8762 .policy = nl80211_policy,
8763 .flags = GENL_ADMIN_PERM,
8764 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8765 NL80211_FLAG_NEED_RTNL,
8766 },
8767 {
8768 .cmd = NL80211_CMD_GET_SURVEY,
8769 .policy = nl80211_policy,
8770 .dumpit = nl80211_dump_survey,
8771 },
8772 {
8773 .cmd = NL80211_CMD_SET_PMKSA,
8774 .doit = nl80211_setdel_pmksa,
8775 .policy = nl80211_policy,
8776 .flags = GENL_ADMIN_PERM,
8777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8778 NL80211_FLAG_NEED_RTNL,
8779 },
8780 {
8781 .cmd = NL80211_CMD_DEL_PMKSA,
8782 .doit = nl80211_setdel_pmksa,
8783 .policy = nl80211_policy,
8784 .flags = GENL_ADMIN_PERM,
8785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8786 NL80211_FLAG_NEED_RTNL,
8787 },
8788 {
8789 .cmd = NL80211_CMD_FLUSH_PMKSA,
8790 .doit = nl80211_flush_pmksa,
8791 .policy = nl80211_policy,
8792 .flags = GENL_ADMIN_PERM,
8793 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8794 NL80211_FLAG_NEED_RTNL,
8795 },
8796 {
8797 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8798 .doit = nl80211_remain_on_channel,
8799 .policy = nl80211_policy,
8800 .flags = GENL_ADMIN_PERM,
8801 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8802 NL80211_FLAG_NEED_RTNL,
8803 },
8804 {
8805 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8806 .doit = nl80211_cancel_remain_on_channel,
8807 .policy = nl80211_policy,
8808 .flags = GENL_ADMIN_PERM,
8809 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8810 NL80211_FLAG_NEED_RTNL,
8811 },
8812 {
8813 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8814 .doit = nl80211_set_tx_bitrate_mask,
8815 .policy = nl80211_policy,
8816 .flags = GENL_ADMIN_PERM,
8817 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8818 NL80211_FLAG_NEED_RTNL,
8819 },
8820 {
8821 .cmd = NL80211_CMD_REGISTER_FRAME,
8822 .doit = nl80211_register_mgmt,
8823 .policy = nl80211_policy,
8824 .flags = GENL_ADMIN_PERM,
8825 .internal_flags = NL80211_FLAG_NEED_WDEV |
8826 NL80211_FLAG_NEED_RTNL,
8827 },
8828 {
8829 .cmd = NL80211_CMD_FRAME,
8830 .doit = nl80211_tx_mgmt,
8831 .policy = nl80211_policy,
8832 .flags = GENL_ADMIN_PERM,
8833 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8834 NL80211_FLAG_NEED_RTNL,
8835 },
8836 {
8837 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8838 .doit = nl80211_tx_mgmt_cancel_wait,
8839 .policy = nl80211_policy,
8840 .flags = GENL_ADMIN_PERM,
8841 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8842 NL80211_FLAG_NEED_RTNL,
8843 },
8844 {
8845 .cmd = NL80211_CMD_SET_POWER_SAVE,
8846 .doit = nl80211_set_power_save,
8847 .policy = nl80211_policy,
8848 .flags = GENL_ADMIN_PERM,
8849 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8850 NL80211_FLAG_NEED_RTNL,
8851 },
8852 {
8853 .cmd = NL80211_CMD_GET_POWER_SAVE,
8854 .doit = nl80211_get_power_save,
8855 .policy = nl80211_policy,
8856 /* can be retrieved by unprivileged users */
8857 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8858 NL80211_FLAG_NEED_RTNL,
8859 },
8860 {
8861 .cmd = NL80211_CMD_SET_CQM,
8862 .doit = nl80211_set_cqm,
8863 .policy = nl80211_policy,
8864 .flags = GENL_ADMIN_PERM,
8865 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8866 NL80211_FLAG_NEED_RTNL,
8867 },
8868 {
8869 .cmd = NL80211_CMD_SET_CHANNEL,
8870 .doit = nl80211_set_channel,
8871 .policy = nl80211_policy,
8872 .flags = GENL_ADMIN_PERM,
8873 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8874 NL80211_FLAG_NEED_RTNL,
8875 },
8876 {
8877 .cmd = NL80211_CMD_SET_WDS_PEER,
8878 .doit = nl80211_set_wds_peer,
8879 .policy = nl80211_policy,
8880 .flags = GENL_ADMIN_PERM,
8881 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8882 NL80211_FLAG_NEED_RTNL,
8883 },
8884 {
8885 .cmd = NL80211_CMD_JOIN_MESH,
8886 .doit = nl80211_join_mesh,
8887 .policy = nl80211_policy,
8888 .flags = GENL_ADMIN_PERM,
8889 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8890 NL80211_FLAG_NEED_RTNL,
8891 },
8892 {
8893 .cmd = NL80211_CMD_LEAVE_MESH,
8894 .doit = nl80211_leave_mesh,
8895 .policy = nl80211_policy,
8896 .flags = GENL_ADMIN_PERM,
8897 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8898 NL80211_FLAG_NEED_RTNL,
8899 },
8900 #ifdef CONFIG_PM
8901 {
8902 .cmd = NL80211_CMD_GET_WOWLAN,
8903 .doit = nl80211_get_wowlan,
8904 .policy = nl80211_policy,
8905 /* can be retrieved by unprivileged users */
8906 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8907 NL80211_FLAG_NEED_RTNL,
8908 },
8909 {
8910 .cmd = NL80211_CMD_SET_WOWLAN,
8911 .doit = nl80211_set_wowlan,
8912 .policy = nl80211_policy,
8913 .flags = GENL_ADMIN_PERM,
8914 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8915 NL80211_FLAG_NEED_RTNL,
8916 },
8917 #endif
8918 {
8919 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8920 .doit = nl80211_set_rekey_data,
8921 .policy = nl80211_policy,
8922 .flags = GENL_ADMIN_PERM,
8923 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8924 NL80211_FLAG_NEED_RTNL,
8925 },
8926 {
8927 .cmd = NL80211_CMD_TDLS_MGMT,
8928 .doit = nl80211_tdls_mgmt,
8929 .policy = nl80211_policy,
8930 .flags = GENL_ADMIN_PERM,
8931 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8932 NL80211_FLAG_NEED_RTNL,
8933 },
8934 {
8935 .cmd = NL80211_CMD_TDLS_OPER,
8936 .doit = nl80211_tdls_oper,
8937 .policy = nl80211_policy,
8938 .flags = GENL_ADMIN_PERM,
8939 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8940 NL80211_FLAG_NEED_RTNL,
8941 },
8942 {
8943 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8944 .doit = nl80211_register_unexpected_frame,
8945 .policy = nl80211_policy,
8946 .flags = GENL_ADMIN_PERM,
8947 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8948 NL80211_FLAG_NEED_RTNL,
8949 },
8950 {
8951 .cmd = NL80211_CMD_PROBE_CLIENT,
8952 .doit = nl80211_probe_client,
8953 .policy = nl80211_policy,
8954 .flags = GENL_ADMIN_PERM,
8955 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8956 NL80211_FLAG_NEED_RTNL,
8957 },
8958 {
8959 .cmd = NL80211_CMD_REGISTER_BEACONS,
8960 .doit = nl80211_register_beacons,
8961 .policy = nl80211_policy,
8962 .flags = GENL_ADMIN_PERM,
8963 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8964 NL80211_FLAG_NEED_RTNL,
8965 },
8966 {
8967 .cmd = NL80211_CMD_SET_NOACK_MAP,
8968 .doit = nl80211_set_noack_map,
8969 .policy = nl80211_policy,
8970 .flags = GENL_ADMIN_PERM,
8971 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8972 NL80211_FLAG_NEED_RTNL,
8973 },
8974 {
8975 .cmd = NL80211_CMD_START_P2P_DEVICE,
8976 .doit = nl80211_start_p2p_device,
8977 .policy = nl80211_policy,
8978 .flags = GENL_ADMIN_PERM,
8979 .internal_flags = NL80211_FLAG_NEED_WDEV |
8980 NL80211_FLAG_NEED_RTNL,
8981 },
8982 {
8983 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8984 .doit = nl80211_stop_p2p_device,
8985 .policy = nl80211_policy,
8986 .flags = GENL_ADMIN_PERM,
8987 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8988 NL80211_FLAG_NEED_RTNL,
8989 },
8990 {
8991 .cmd = NL80211_CMD_SET_MCAST_RATE,
8992 .doit = nl80211_set_mcast_rate,
8993 .policy = nl80211_policy,
8994 .flags = GENL_ADMIN_PERM,
8995 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8996 NL80211_FLAG_NEED_RTNL,
8997 },
8998 {
8999 .cmd = NL80211_CMD_SET_MAC_ACL,
9000 .doit = nl80211_set_mac_acl,
9001 .policy = nl80211_policy,
9002 .flags = GENL_ADMIN_PERM,
9003 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9004 NL80211_FLAG_NEED_RTNL,
9005 },
9006 {
9007 .cmd = NL80211_CMD_RADAR_DETECT,
9008 .doit = nl80211_start_radar_detection,
9009 .policy = nl80211_policy,
9010 .flags = GENL_ADMIN_PERM,
9011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9012 NL80211_FLAG_NEED_RTNL,
9013 },
9014 {
9015 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9016 .doit = nl80211_get_protocol_features,
9017 .policy = nl80211_policy,
9018 },
9019 {
9020 .cmd = NL80211_CMD_UPDATE_FT_IES,
9021 .doit = nl80211_update_ft_ies,
9022 .policy = nl80211_policy,
9023 .flags = GENL_ADMIN_PERM,
9024 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9025 NL80211_FLAG_NEED_RTNL,
9026 },
9027 {
9028 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9029 .doit = nl80211_crit_protocol_start,
9030 .policy = nl80211_policy,
9031 .flags = GENL_ADMIN_PERM,
9032 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9033 NL80211_FLAG_NEED_RTNL,
9034 },
9035 {
9036 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9037 .doit = nl80211_crit_protocol_stop,
9038 .policy = nl80211_policy,
9039 .flags = GENL_ADMIN_PERM,
9040 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9041 NL80211_FLAG_NEED_RTNL,
9042 }
9043 };
9044
9045 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9046 .name = "mlme",
9047 };
9048
9049 /* multicast groups */
9050 static struct genl_multicast_group nl80211_config_mcgrp = {
9051 .name = "config",
9052 };
9053 static struct genl_multicast_group nl80211_scan_mcgrp = {
9054 .name = "scan",
9055 };
9056 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9057 .name = "regulatory",
9058 };
9059
9060 /* notification functions */
9061
9062 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9063 {
9064 struct sk_buff *msg;
9065 struct nl80211_dump_wiphy_state state = {};
9066
9067 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9068 if (!msg)
9069 return;
9070
9071 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9072 nlmsg_free(msg);
9073 return;
9074 }
9075
9076 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9077 nl80211_config_mcgrp.id, GFP_KERNEL);
9078 }
9079
9080 static int nl80211_add_scan_req(struct sk_buff *msg,
9081 struct cfg80211_registered_device *rdev)
9082 {
9083 struct cfg80211_scan_request *req = rdev->scan_req;
9084 struct nlattr *nest;
9085 int i;
9086
9087 if (WARN_ON(!req))
9088 return 0;
9089
9090 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9091 if (!nest)
9092 goto nla_put_failure;
9093 for (i = 0; i < req->n_ssids; i++) {
9094 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9095 goto nla_put_failure;
9096 }
9097 nla_nest_end(msg, nest);
9098
9099 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9100 if (!nest)
9101 goto nla_put_failure;
9102 for (i = 0; i < req->n_channels; i++) {
9103 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9104 goto nla_put_failure;
9105 }
9106 nla_nest_end(msg, nest);
9107
9108 if (req->ie &&
9109 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9110 goto nla_put_failure;
9111
9112 if (req->flags)
9113 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9114
9115 return 0;
9116 nla_put_failure:
9117 return -ENOBUFS;
9118 }
9119
9120 static int nl80211_send_scan_msg(struct sk_buff *msg,
9121 struct cfg80211_registered_device *rdev,
9122 struct wireless_dev *wdev,
9123 u32 portid, u32 seq, int flags,
9124 u32 cmd)
9125 {
9126 void *hdr;
9127
9128 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9129 if (!hdr)
9130 return -1;
9131
9132 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9133 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9134 wdev->netdev->ifindex)) ||
9135 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9136 goto nla_put_failure;
9137
9138 /* ignore errors and send incomplete event anyway */
9139 nl80211_add_scan_req(msg, rdev);
9140
9141 return genlmsg_end(msg, hdr);
9142
9143 nla_put_failure:
9144 genlmsg_cancel(msg, hdr);
9145 return -EMSGSIZE;
9146 }
9147
9148 static int
9149 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9150 struct cfg80211_registered_device *rdev,
9151 struct net_device *netdev,
9152 u32 portid, u32 seq, int flags, u32 cmd)
9153 {
9154 void *hdr;
9155
9156 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9157 if (!hdr)
9158 return -1;
9159
9160 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9161 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9162 goto nla_put_failure;
9163
9164 return genlmsg_end(msg, hdr);
9165
9166 nla_put_failure:
9167 genlmsg_cancel(msg, hdr);
9168 return -EMSGSIZE;
9169 }
9170
9171 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9172 struct wireless_dev *wdev)
9173 {
9174 struct sk_buff *msg;
9175
9176 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9177 if (!msg)
9178 return;
9179
9180 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9181 NL80211_CMD_TRIGGER_SCAN) < 0) {
9182 nlmsg_free(msg);
9183 return;
9184 }
9185
9186 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9187 nl80211_scan_mcgrp.id, GFP_KERNEL);
9188 }
9189
9190 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9191 struct wireless_dev *wdev)
9192 {
9193 struct sk_buff *msg;
9194
9195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9196 if (!msg)
9197 return;
9198
9199 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9200 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9201 nlmsg_free(msg);
9202 return;
9203 }
9204
9205 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9206 nl80211_scan_mcgrp.id, GFP_KERNEL);
9207 }
9208
9209 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9210 struct wireless_dev *wdev)
9211 {
9212 struct sk_buff *msg;
9213
9214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9215 if (!msg)
9216 return;
9217
9218 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9219 NL80211_CMD_SCAN_ABORTED) < 0) {
9220 nlmsg_free(msg);
9221 return;
9222 }
9223
9224 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9225 nl80211_scan_mcgrp.id, GFP_KERNEL);
9226 }
9227
9228 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9229 struct net_device *netdev)
9230 {
9231 struct sk_buff *msg;
9232
9233 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9234 if (!msg)
9235 return;
9236
9237 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9238 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9239 nlmsg_free(msg);
9240 return;
9241 }
9242
9243 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9244 nl80211_scan_mcgrp.id, GFP_KERNEL);
9245 }
9246
9247 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9248 struct net_device *netdev, u32 cmd)
9249 {
9250 struct sk_buff *msg;
9251
9252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9253 if (!msg)
9254 return;
9255
9256 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9257 nlmsg_free(msg);
9258 return;
9259 }
9260
9261 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9262 nl80211_scan_mcgrp.id, GFP_KERNEL);
9263 }
9264
9265 /*
9266 * This can happen on global regulatory changes or device specific settings
9267 * based on custom world regulatory domains.
9268 */
9269 void nl80211_send_reg_change_event(struct regulatory_request *request)
9270 {
9271 struct sk_buff *msg;
9272 void *hdr;
9273
9274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9275 if (!msg)
9276 return;
9277
9278 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9279 if (!hdr) {
9280 nlmsg_free(msg);
9281 return;
9282 }
9283
9284 /* Userspace can always count this one always being set */
9285 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9286 goto nla_put_failure;
9287
9288 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9289 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9290 NL80211_REGDOM_TYPE_WORLD))
9291 goto nla_put_failure;
9292 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9293 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9294 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9295 goto nla_put_failure;
9296 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9297 request->intersect) {
9298 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9299 NL80211_REGDOM_TYPE_INTERSECTION))
9300 goto nla_put_failure;
9301 } else {
9302 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9303 NL80211_REGDOM_TYPE_COUNTRY) ||
9304 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9305 request->alpha2))
9306 goto nla_put_failure;
9307 }
9308
9309 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9310 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9311 goto nla_put_failure;
9312
9313 genlmsg_end(msg, hdr);
9314
9315 rcu_read_lock();
9316 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9317 GFP_ATOMIC);
9318 rcu_read_unlock();
9319
9320 return;
9321
9322 nla_put_failure:
9323 genlmsg_cancel(msg, hdr);
9324 nlmsg_free(msg);
9325 }
9326
9327 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9328 struct net_device *netdev,
9329 const u8 *buf, size_t len,
9330 enum nl80211_commands cmd, gfp_t gfp)
9331 {
9332 struct sk_buff *msg;
9333 void *hdr;
9334
9335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9336 if (!msg)
9337 return;
9338
9339 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9340 if (!hdr) {
9341 nlmsg_free(msg);
9342 return;
9343 }
9344
9345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9346 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9347 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9348 goto nla_put_failure;
9349
9350 genlmsg_end(msg, hdr);
9351
9352 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9353 nl80211_mlme_mcgrp.id, gfp);
9354 return;
9355
9356 nla_put_failure:
9357 genlmsg_cancel(msg, hdr);
9358 nlmsg_free(msg);
9359 }
9360
9361 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9362 struct net_device *netdev, const u8 *buf,
9363 size_t len, gfp_t gfp)
9364 {
9365 nl80211_send_mlme_event(rdev, netdev, buf, len,
9366 NL80211_CMD_AUTHENTICATE, gfp);
9367 }
9368
9369 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9370 struct net_device *netdev, const u8 *buf,
9371 size_t len, gfp_t gfp)
9372 {
9373 nl80211_send_mlme_event(rdev, netdev, buf, len,
9374 NL80211_CMD_ASSOCIATE, gfp);
9375 }
9376
9377 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9378 struct net_device *netdev, const u8 *buf,
9379 size_t len, gfp_t gfp)
9380 {
9381 nl80211_send_mlme_event(rdev, netdev, buf, len,
9382 NL80211_CMD_DEAUTHENTICATE, gfp);
9383 }
9384
9385 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9386 struct net_device *netdev, const u8 *buf,
9387 size_t len, gfp_t gfp)
9388 {
9389 nl80211_send_mlme_event(rdev, netdev, buf, len,
9390 NL80211_CMD_DISASSOCIATE, gfp);
9391 }
9392
9393 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9394 size_t len)
9395 {
9396 struct wireless_dev *wdev = dev->ieee80211_ptr;
9397 struct wiphy *wiphy = wdev->wiphy;
9398 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9399 const struct ieee80211_mgmt *mgmt = (void *)buf;
9400 u32 cmd;
9401
9402 if (WARN_ON(len < 2))
9403 return;
9404
9405 if (ieee80211_is_deauth(mgmt->frame_control))
9406 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9407 else
9408 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9409
9410 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9411 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9412 }
9413 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9414
9415 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9416 struct net_device *netdev, int cmd,
9417 const u8 *addr, gfp_t gfp)
9418 {
9419 struct sk_buff *msg;
9420 void *hdr;
9421
9422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9423 if (!msg)
9424 return;
9425
9426 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9427 if (!hdr) {
9428 nlmsg_free(msg);
9429 return;
9430 }
9431
9432 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9433 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9434 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9435 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9436 goto nla_put_failure;
9437
9438 genlmsg_end(msg, hdr);
9439
9440 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9441 nl80211_mlme_mcgrp.id, gfp);
9442 return;
9443
9444 nla_put_failure:
9445 genlmsg_cancel(msg, hdr);
9446 nlmsg_free(msg);
9447 }
9448
9449 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9450 struct net_device *netdev, const u8 *addr,
9451 gfp_t gfp)
9452 {
9453 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9454 addr, gfp);
9455 }
9456
9457 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9458 struct net_device *netdev, const u8 *addr,
9459 gfp_t gfp)
9460 {
9461 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9462 addr, gfp);
9463 }
9464
9465 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9466 struct net_device *netdev, const u8 *bssid,
9467 const u8 *req_ie, size_t req_ie_len,
9468 const u8 *resp_ie, size_t resp_ie_len,
9469 u16 status, gfp_t gfp)
9470 {
9471 struct sk_buff *msg;
9472 void *hdr;
9473
9474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9475 if (!msg)
9476 return;
9477
9478 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9479 if (!hdr) {
9480 nlmsg_free(msg);
9481 return;
9482 }
9483
9484 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9485 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9486 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9487 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9488 (req_ie &&
9489 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9490 (resp_ie &&
9491 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_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);
9498 return;
9499
9500 nla_put_failure:
9501 genlmsg_cancel(msg, hdr);
9502 nlmsg_free(msg);
9503
9504 }
9505
9506 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9507 struct net_device *netdev, const u8 *bssid,
9508 const u8 *req_ie, size_t req_ie_len,
9509 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9510 {
9511 struct sk_buff *msg;
9512 void *hdr;
9513
9514 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9515 if (!msg)
9516 return;
9517
9518 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9519 if (!hdr) {
9520 nlmsg_free(msg);
9521 return;
9522 }
9523
9524 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9525 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9526 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9527 (req_ie &&
9528 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9529 (resp_ie &&
9530 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9531 goto nla_put_failure;
9532
9533 genlmsg_end(msg, hdr);
9534
9535 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9536 nl80211_mlme_mcgrp.id, gfp);
9537 return;
9538
9539 nla_put_failure:
9540 genlmsg_cancel(msg, hdr);
9541 nlmsg_free(msg);
9542
9543 }
9544
9545 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9546 struct net_device *netdev, u16 reason,
9547 const u8 *ie, size_t ie_len, bool from_ap)
9548 {
9549 struct sk_buff *msg;
9550 void *hdr;
9551
9552 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9553 if (!msg)
9554 return;
9555
9556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
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, netdev->ifindex) ||
9564 (from_ap && reason &&
9565 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9566 (from_ap &&
9567 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9568 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9569 goto nla_put_failure;
9570
9571 genlmsg_end(msg, hdr);
9572
9573 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9574 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9575 return;
9576
9577 nla_put_failure:
9578 genlmsg_cancel(msg, hdr);
9579 nlmsg_free(msg);
9580
9581 }
9582
9583 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9584 struct net_device *netdev, const u8 *bssid,
9585 gfp_t gfp)
9586 {
9587 struct sk_buff *msg;
9588 void *hdr;
9589
9590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9591 if (!msg)
9592 return;
9593
9594 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9595 if (!hdr) {
9596 nlmsg_free(msg);
9597 return;
9598 }
9599
9600 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9601 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9603 goto nla_put_failure;
9604
9605 genlmsg_end(msg, hdr);
9606
9607 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9608 nl80211_mlme_mcgrp.id, gfp);
9609 return;
9610
9611 nla_put_failure:
9612 genlmsg_cancel(msg, hdr);
9613 nlmsg_free(msg);
9614 }
9615
9616 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9617 const u8* ie, u8 ie_len, gfp_t gfp)
9618 {
9619 struct wireless_dev *wdev = dev->ieee80211_ptr;
9620 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9621 struct sk_buff *msg;
9622 void *hdr;
9623
9624 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9625 return;
9626
9627 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9628
9629 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9630 if (!msg)
9631 return;
9632
9633 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9634 if (!hdr) {
9635 nlmsg_free(msg);
9636 return;
9637 }
9638
9639 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9640 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9641 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9642 (ie_len && ie &&
9643 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9644 goto nla_put_failure;
9645
9646 genlmsg_end(msg, hdr);
9647
9648 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9649 nl80211_mlme_mcgrp.id, gfp);
9650 return;
9651
9652 nla_put_failure:
9653 genlmsg_cancel(msg, hdr);
9654 nlmsg_free(msg);
9655 }
9656 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9657
9658 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9659 struct net_device *netdev, const u8 *addr,
9660 enum nl80211_key_type key_type, int key_id,
9661 const u8 *tsc, gfp_t gfp)
9662 {
9663 struct sk_buff *msg;
9664 void *hdr;
9665
9666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9667 if (!msg)
9668 return;
9669
9670 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9671 if (!hdr) {
9672 nlmsg_free(msg);
9673 return;
9674 }
9675
9676 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9677 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9678 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9679 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9680 (key_id != -1 &&
9681 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9682 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9683 goto nla_put_failure;
9684
9685 genlmsg_end(msg, hdr);
9686
9687 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9688 nl80211_mlme_mcgrp.id, gfp);
9689 return;
9690
9691 nla_put_failure:
9692 genlmsg_cancel(msg, hdr);
9693 nlmsg_free(msg);
9694 }
9695
9696 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9697 struct ieee80211_channel *channel_before,
9698 struct ieee80211_channel *channel_after)
9699 {
9700 struct sk_buff *msg;
9701 void *hdr;
9702 struct nlattr *nl_freq;
9703
9704 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9705 if (!msg)
9706 return;
9707
9708 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9709 if (!hdr) {
9710 nlmsg_free(msg);
9711 return;
9712 }
9713
9714 /*
9715 * Since we are applying the beacon hint to a wiphy we know its
9716 * wiphy_idx is valid
9717 */
9718 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9719 goto nla_put_failure;
9720
9721 /* Before */
9722 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9723 if (!nl_freq)
9724 goto nla_put_failure;
9725 if (nl80211_msg_put_channel(msg, channel_before, false))
9726 goto nla_put_failure;
9727 nla_nest_end(msg, nl_freq);
9728
9729 /* After */
9730 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9731 if (!nl_freq)
9732 goto nla_put_failure;
9733 if (nl80211_msg_put_channel(msg, channel_after, false))
9734 goto nla_put_failure;
9735 nla_nest_end(msg, nl_freq);
9736
9737 genlmsg_end(msg, hdr);
9738
9739 rcu_read_lock();
9740 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9741 GFP_ATOMIC);
9742 rcu_read_unlock();
9743
9744 return;
9745
9746 nla_put_failure:
9747 genlmsg_cancel(msg, hdr);
9748 nlmsg_free(msg);
9749 }
9750
9751 static void nl80211_send_remain_on_chan_event(
9752 int cmd, struct cfg80211_registered_device *rdev,
9753 struct wireless_dev *wdev, u64 cookie,
9754 struct ieee80211_channel *chan,
9755 unsigned int duration, gfp_t gfp)
9756 {
9757 struct sk_buff *msg;
9758 void *hdr;
9759
9760 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9761 if (!msg)
9762 return;
9763
9764 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9765 if (!hdr) {
9766 nlmsg_free(msg);
9767 return;
9768 }
9769
9770 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9771 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9772 wdev->netdev->ifindex)) ||
9773 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9774 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9775 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9776 NL80211_CHAN_NO_HT) ||
9777 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9778 goto nla_put_failure;
9779
9780 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9781 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9782 goto nla_put_failure;
9783
9784 genlmsg_end(msg, hdr);
9785
9786 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9787 nl80211_mlme_mcgrp.id, gfp);
9788 return;
9789
9790 nla_put_failure:
9791 genlmsg_cancel(msg, hdr);
9792 nlmsg_free(msg);
9793 }
9794
9795 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9796 struct ieee80211_channel *chan,
9797 unsigned int duration, gfp_t gfp)
9798 {
9799 struct wiphy *wiphy = wdev->wiphy;
9800 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9801
9802 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9803 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9804 rdev, wdev, cookie, chan,
9805 duration, gfp);
9806 }
9807 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9808
9809 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9810 struct ieee80211_channel *chan,
9811 gfp_t gfp)
9812 {
9813 struct wiphy *wiphy = wdev->wiphy;
9814 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9815
9816 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9817 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9818 rdev, wdev, cookie, chan, 0, gfp);
9819 }
9820 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9821
9822 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9823 struct station_info *sinfo, gfp_t gfp)
9824 {
9825 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9826 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9827 struct sk_buff *msg;
9828
9829 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9830
9831 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9832 if (!msg)
9833 return;
9834
9835 if (nl80211_send_station(msg, 0, 0, 0,
9836 rdev, dev, mac_addr, sinfo) < 0) {
9837 nlmsg_free(msg);
9838 return;
9839 }
9840
9841 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9842 nl80211_mlme_mcgrp.id, gfp);
9843 }
9844 EXPORT_SYMBOL(cfg80211_new_sta);
9845
9846 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9847 {
9848 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9849 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9850 struct sk_buff *msg;
9851 void *hdr;
9852
9853 trace_cfg80211_del_sta(dev, mac_addr);
9854
9855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9856 if (!msg)
9857 return;
9858
9859 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9860 if (!hdr) {
9861 nlmsg_free(msg);
9862 return;
9863 }
9864
9865 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9866 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9867 goto nla_put_failure;
9868
9869 genlmsg_end(msg, hdr);
9870
9871 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9872 nl80211_mlme_mcgrp.id, gfp);
9873 return;
9874
9875 nla_put_failure:
9876 genlmsg_cancel(msg, hdr);
9877 nlmsg_free(msg);
9878 }
9879 EXPORT_SYMBOL(cfg80211_del_sta);
9880
9881 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9882 enum nl80211_connect_failed_reason reason,
9883 gfp_t gfp)
9884 {
9885 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9886 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9887 struct sk_buff *msg;
9888 void *hdr;
9889
9890 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9891 if (!msg)
9892 return;
9893
9894 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9895 if (!hdr) {
9896 nlmsg_free(msg);
9897 return;
9898 }
9899
9900 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9901 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9902 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9903 goto nla_put_failure;
9904
9905 genlmsg_end(msg, hdr);
9906
9907 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9908 nl80211_mlme_mcgrp.id, gfp);
9909 return;
9910
9911 nla_put_failure:
9912 genlmsg_cancel(msg, hdr);
9913 nlmsg_free(msg);
9914 }
9915 EXPORT_SYMBOL(cfg80211_conn_failed);
9916
9917 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9918 const u8 *addr, gfp_t gfp)
9919 {
9920 struct wireless_dev *wdev = dev->ieee80211_ptr;
9921 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9922 struct sk_buff *msg;
9923 void *hdr;
9924 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9925
9926 if (!nlportid)
9927 return false;
9928
9929 msg = nlmsg_new(100, gfp);
9930 if (!msg)
9931 return true;
9932
9933 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9934 if (!hdr) {
9935 nlmsg_free(msg);
9936 return true;
9937 }
9938
9939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9941 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9942 goto nla_put_failure;
9943
9944 genlmsg_end(msg, hdr);
9945 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9946 return true;
9947
9948 nla_put_failure:
9949 genlmsg_cancel(msg, hdr);
9950 nlmsg_free(msg);
9951 return true;
9952 }
9953
9954 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9955 const u8 *addr, gfp_t gfp)
9956 {
9957 struct wireless_dev *wdev = dev->ieee80211_ptr;
9958 bool ret;
9959
9960 trace_cfg80211_rx_spurious_frame(dev, addr);
9961
9962 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9963 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9964 trace_cfg80211_return_bool(false);
9965 return false;
9966 }
9967 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9968 addr, gfp);
9969 trace_cfg80211_return_bool(ret);
9970 return ret;
9971 }
9972 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9973
9974 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9975 const u8 *addr, gfp_t gfp)
9976 {
9977 struct wireless_dev *wdev = dev->ieee80211_ptr;
9978 bool ret;
9979
9980 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9981
9982 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9983 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9984 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9985 trace_cfg80211_return_bool(false);
9986 return false;
9987 }
9988 ret = __nl80211_unexpected_frame(dev,
9989 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9990 addr, gfp);
9991 trace_cfg80211_return_bool(ret);
9992 return ret;
9993 }
9994 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9995
9996 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9997 struct wireless_dev *wdev, u32 nlportid,
9998 int freq, int sig_dbm,
9999 const u8 *buf, size_t len, gfp_t gfp)
10000 {
10001 struct net_device *netdev = wdev->netdev;
10002 struct sk_buff *msg;
10003 void *hdr;
10004
10005 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10006 if (!msg)
10007 return -ENOMEM;
10008
10009 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10010 if (!hdr) {
10011 nlmsg_free(msg);
10012 return -ENOMEM;
10013 }
10014
10015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10016 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10017 netdev->ifindex)) ||
10018 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10019 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10020 (sig_dbm &&
10021 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10022 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10023 goto nla_put_failure;
10024
10025 genlmsg_end(msg, hdr);
10026
10027 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10028
10029 nla_put_failure:
10030 genlmsg_cancel(msg, hdr);
10031 nlmsg_free(msg);
10032 return -ENOBUFS;
10033 }
10034
10035 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10036 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10037 {
10038 struct wiphy *wiphy = wdev->wiphy;
10039 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10040 struct net_device *netdev = wdev->netdev;
10041 struct sk_buff *msg;
10042 void *hdr;
10043
10044 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10045
10046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10047 if (!msg)
10048 return;
10049
10050 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10051 if (!hdr) {
10052 nlmsg_free(msg);
10053 return;
10054 }
10055
10056 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10057 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10058 netdev->ifindex)) ||
10059 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10060 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10061 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10062 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10063 goto nla_put_failure;
10064
10065 genlmsg_end(msg, hdr);
10066
10067 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10068 return;
10069
10070 nla_put_failure:
10071 genlmsg_cancel(msg, hdr);
10072 nlmsg_free(msg);
10073 }
10074 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10075
10076 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10077 enum nl80211_cqm_rssi_threshold_event rssi_event,
10078 gfp_t gfp)
10079 {
10080 struct wireless_dev *wdev = dev->ieee80211_ptr;
10081 struct wiphy *wiphy = wdev->wiphy;
10082 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10083 struct sk_buff *msg;
10084 struct nlattr *pinfoattr;
10085 void *hdr;
10086
10087 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10088
10089 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10090 if (!msg)
10091 return;
10092
10093 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10094 if (!hdr) {
10095 nlmsg_free(msg);
10096 return;
10097 }
10098
10099 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10100 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10101 goto nla_put_failure;
10102
10103 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10104 if (!pinfoattr)
10105 goto nla_put_failure;
10106
10107 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10108 rssi_event))
10109 goto nla_put_failure;
10110
10111 nla_nest_end(msg, pinfoattr);
10112
10113 genlmsg_end(msg, hdr);
10114
10115 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10116 nl80211_mlme_mcgrp.id, gfp);
10117 return;
10118
10119 nla_put_failure:
10120 genlmsg_cancel(msg, hdr);
10121 nlmsg_free(msg);
10122 }
10123 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10124
10125 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10126 struct net_device *netdev, const u8 *bssid,
10127 const u8 *replay_ctr, gfp_t gfp)
10128 {
10129 struct sk_buff *msg;
10130 struct nlattr *rekey_attr;
10131 void *hdr;
10132
10133 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10134 if (!msg)
10135 return;
10136
10137 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10138 if (!hdr) {
10139 nlmsg_free(msg);
10140 return;
10141 }
10142
10143 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10144 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10145 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10146 goto nla_put_failure;
10147
10148 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10149 if (!rekey_attr)
10150 goto nla_put_failure;
10151
10152 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10153 NL80211_REPLAY_CTR_LEN, replay_ctr))
10154 goto nla_put_failure;
10155
10156 nla_nest_end(msg, rekey_attr);
10157
10158 genlmsg_end(msg, hdr);
10159
10160 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10161 nl80211_mlme_mcgrp.id, gfp);
10162 return;
10163
10164 nla_put_failure:
10165 genlmsg_cancel(msg, hdr);
10166 nlmsg_free(msg);
10167 }
10168
10169 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10170 const u8 *replay_ctr, gfp_t gfp)
10171 {
10172 struct wireless_dev *wdev = dev->ieee80211_ptr;
10173 struct wiphy *wiphy = wdev->wiphy;
10174 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10175
10176 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10177 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10178 }
10179 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10180
10181 static void
10182 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10183 struct net_device *netdev, int index,
10184 const u8 *bssid, bool preauth, gfp_t gfp)
10185 {
10186 struct sk_buff *msg;
10187 struct nlattr *attr;
10188 void *hdr;
10189
10190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10191 if (!msg)
10192 return;
10193
10194 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10195 if (!hdr) {
10196 nlmsg_free(msg);
10197 return;
10198 }
10199
10200 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10201 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10202 goto nla_put_failure;
10203
10204 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10205 if (!attr)
10206 goto nla_put_failure;
10207
10208 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10209 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10210 (preauth &&
10211 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10212 goto nla_put_failure;
10213
10214 nla_nest_end(msg, attr);
10215
10216 genlmsg_end(msg, hdr);
10217
10218 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10219 nl80211_mlme_mcgrp.id, gfp);
10220 return;
10221
10222 nla_put_failure:
10223 genlmsg_cancel(msg, hdr);
10224 nlmsg_free(msg);
10225 }
10226
10227 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10228 const u8 *bssid, bool preauth, gfp_t gfp)
10229 {
10230 struct wireless_dev *wdev = dev->ieee80211_ptr;
10231 struct wiphy *wiphy = wdev->wiphy;
10232 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10233
10234 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10235 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10236 }
10237 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10238
10239 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10240 struct net_device *netdev,
10241 struct cfg80211_chan_def *chandef,
10242 gfp_t gfp)
10243 {
10244 struct sk_buff *msg;
10245 void *hdr;
10246
10247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10248 if (!msg)
10249 return;
10250
10251 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10252 if (!hdr) {
10253 nlmsg_free(msg);
10254 return;
10255 }
10256
10257 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10258 goto nla_put_failure;
10259
10260 if (nl80211_send_chandef(msg, chandef))
10261 goto nla_put_failure;
10262
10263 genlmsg_end(msg, hdr);
10264
10265 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10266 nl80211_mlme_mcgrp.id, gfp);
10267 return;
10268
10269 nla_put_failure:
10270 genlmsg_cancel(msg, hdr);
10271 nlmsg_free(msg);
10272 }
10273
10274 void cfg80211_ch_switch_notify(struct net_device *dev,
10275 struct cfg80211_chan_def *chandef)
10276 {
10277 struct wireless_dev *wdev = dev->ieee80211_ptr;
10278 struct wiphy *wiphy = wdev->wiphy;
10279 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10280
10281 trace_cfg80211_ch_switch_notify(dev, chandef);
10282
10283 wdev_lock(wdev);
10284
10285 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10286 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10287 goto out;
10288
10289 wdev->channel = chandef->chan;
10290 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10291 out:
10292 wdev_unlock(wdev);
10293 return;
10294 }
10295 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10296
10297 void cfg80211_cqm_txe_notify(struct net_device *dev,
10298 const u8 *peer, u32 num_packets,
10299 u32 rate, u32 intvl, gfp_t gfp)
10300 {
10301 struct wireless_dev *wdev = dev->ieee80211_ptr;
10302 struct wiphy *wiphy = wdev->wiphy;
10303 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10304 struct sk_buff *msg;
10305 struct nlattr *pinfoattr;
10306 void *hdr;
10307
10308 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10309 if (!msg)
10310 return;
10311
10312 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10313 if (!hdr) {
10314 nlmsg_free(msg);
10315 return;
10316 }
10317
10318 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10319 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10320 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10321 goto nla_put_failure;
10322
10323 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10324 if (!pinfoattr)
10325 goto nla_put_failure;
10326
10327 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10328 goto nla_put_failure;
10329
10330 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10331 goto nla_put_failure;
10332
10333 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10334 goto nla_put_failure;
10335
10336 nla_nest_end(msg, pinfoattr);
10337
10338 genlmsg_end(msg, hdr);
10339
10340 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10341 nl80211_mlme_mcgrp.id, gfp);
10342 return;
10343
10344 nla_put_failure:
10345 genlmsg_cancel(msg, hdr);
10346 nlmsg_free(msg);
10347 }
10348 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10349
10350 void
10351 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10352 struct cfg80211_chan_def *chandef,
10353 enum nl80211_radar_event event,
10354 struct net_device *netdev, gfp_t gfp)
10355 {
10356 struct sk_buff *msg;
10357 void *hdr;
10358
10359 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10360 if (!msg)
10361 return;
10362
10363 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10364 if (!hdr) {
10365 nlmsg_free(msg);
10366 return;
10367 }
10368
10369 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10370 goto nla_put_failure;
10371
10372 /* NOP and radar events don't need a netdev parameter */
10373 if (netdev) {
10374 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10375
10376 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10377 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10378 goto nla_put_failure;
10379 }
10380
10381 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10382 goto nla_put_failure;
10383
10384 if (nl80211_send_chandef(msg, chandef))
10385 goto nla_put_failure;
10386
10387 genlmsg_end(msg, hdr);
10388
10389 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10390 nl80211_mlme_mcgrp.id, gfp);
10391 return;
10392
10393 nla_put_failure:
10394 genlmsg_cancel(msg, hdr);
10395 nlmsg_free(msg);
10396 }
10397
10398 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10399 const u8 *peer, u32 num_packets, gfp_t gfp)
10400 {
10401 struct wireless_dev *wdev = dev->ieee80211_ptr;
10402 struct wiphy *wiphy = wdev->wiphy;
10403 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10404 struct sk_buff *msg;
10405 struct nlattr *pinfoattr;
10406 void *hdr;
10407
10408 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10409
10410 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10411 if (!msg)
10412 return;
10413
10414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10415 if (!hdr) {
10416 nlmsg_free(msg);
10417 return;
10418 }
10419
10420 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10421 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10422 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10423 goto nla_put_failure;
10424
10425 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10426 if (!pinfoattr)
10427 goto nla_put_failure;
10428
10429 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10430 goto nla_put_failure;
10431
10432 nla_nest_end(msg, pinfoattr);
10433
10434 genlmsg_end(msg, hdr);
10435
10436 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10437 nl80211_mlme_mcgrp.id, gfp);
10438 return;
10439
10440 nla_put_failure:
10441 genlmsg_cancel(msg, hdr);
10442 nlmsg_free(msg);
10443 }
10444 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10445
10446 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10447 u64 cookie, bool acked, gfp_t gfp)
10448 {
10449 struct wireless_dev *wdev = dev->ieee80211_ptr;
10450 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10451 struct sk_buff *msg;
10452 void *hdr;
10453
10454 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10455
10456 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10457
10458 if (!msg)
10459 return;
10460
10461 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10462 if (!hdr) {
10463 nlmsg_free(msg);
10464 return;
10465 }
10466
10467 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10468 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10469 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10470 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10471 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10472 goto nla_put_failure;
10473
10474 genlmsg_end(msg, hdr);
10475
10476 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10477 nl80211_mlme_mcgrp.id, gfp);
10478 return;
10479
10480 nla_put_failure:
10481 genlmsg_cancel(msg, hdr);
10482 nlmsg_free(msg);
10483 }
10484 EXPORT_SYMBOL(cfg80211_probe_status);
10485
10486 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10487 const u8 *frame, size_t len,
10488 int freq, int sig_dbm)
10489 {
10490 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10491 struct sk_buff *msg;
10492 void *hdr;
10493 struct cfg80211_beacon_registration *reg;
10494
10495 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10496
10497 spin_lock_bh(&rdev->beacon_registrations_lock);
10498 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10499 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10500 if (!msg) {
10501 spin_unlock_bh(&rdev->beacon_registrations_lock);
10502 return;
10503 }
10504
10505 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10506 if (!hdr)
10507 goto nla_put_failure;
10508
10509 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10510 (freq &&
10511 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10512 (sig_dbm &&
10513 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10514 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10515 goto nla_put_failure;
10516
10517 genlmsg_end(msg, hdr);
10518
10519 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10520 }
10521 spin_unlock_bh(&rdev->beacon_registrations_lock);
10522 return;
10523
10524 nla_put_failure:
10525 spin_unlock_bh(&rdev->beacon_registrations_lock);
10526 if (hdr)
10527 genlmsg_cancel(msg, hdr);
10528 nlmsg_free(msg);
10529 }
10530 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10531
10532 #ifdef CONFIG_PM
10533 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10534 struct cfg80211_wowlan_wakeup *wakeup,
10535 gfp_t gfp)
10536 {
10537 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10538 struct sk_buff *msg;
10539 void *hdr;
10540 int size = 200;
10541
10542 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10543
10544 if (wakeup)
10545 size += wakeup->packet_present_len;
10546
10547 msg = nlmsg_new(size, gfp);
10548 if (!msg)
10549 return;
10550
10551 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10552 if (!hdr)
10553 goto free_msg;
10554
10555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10556 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10557 goto free_msg;
10558
10559 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10560 wdev->netdev->ifindex))
10561 goto free_msg;
10562
10563 if (wakeup) {
10564 struct nlattr *reasons;
10565
10566 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10567
10568 if (wakeup->disconnect &&
10569 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10570 goto free_msg;
10571 if (wakeup->magic_pkt &&
10572 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10573 goto free_msg;
10574 if (wakeup->gtk_rekey_failure &&
10575 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10576 goto free_msg;
10577 if (wakeup->eap_identity_req &&
10578 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10579 goto free_msg;
10580 if (wakeup->four_way_handshake &&
10581 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10582 goto free_msg;
10583 if (wakeup->rfkill_release &&
10584 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10585 goto free_msg;
10586
10587 if (wakeup->pattern_idx >= 0 &&
10588 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10589 wakeup->pattern_idx))
10590 goto free_msg;
10591
10592 if (wakeup->tcp_match)
10593 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10594
10595 if (wakeup->tcp_connlost)
10596 nla_put_flag(msg,
10597 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10598
10599 if (wakeup->tcp_nomoretokens)
10600 nla_put_flag(msg,
10601 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10602
10603 if (wakeup->packet) {
10604 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10605 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10606
10607 if (!wakeup->packet_80211) {
10608 pkt_attr =
10609 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10610 len_attr =
10611 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10612 }
10613
10614 if (wakeup->packet_len &&
10615 nla_put_u32(msg, len_attr, wakeup->packet_len))
10616 goto free_msg;
10617
10618 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10619 wakeup->packet))
10620 goto free_msg;
10621 }
10622
10623 nla_nest_end(msg, reasons);
10624 }
10625
10626 genlmsg_end(msg, hdr);
10627
10628 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10629 nl80211_mlme_mcgrp.id, gfp);
10630 return;
10631
10632 free_msg:
10633 nlmsg_free(msg);
10634 }
10635 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10636 #endif
10637
10638 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10639 enum nl80211_tdls_operation oper,
10640 u16 reason_code, gfp_t gfp)
10641 {
10642 struct wireless_dev *wdev = dev->ieee80211_ptr;
10643 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10644 struct sk_buff *msg;
10645 void *hdr;
10646
10647 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10648 reason_code);
10649
10650 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10651 if (!msg)
10652 return;
10653
10654 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10655 if (!hdr) {
10656 nlmsg_free(msg);
10657 return;
10658 }
10659
10660 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10661 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10662 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10663 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10664 (reason_code > 0 &&
10665 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10666 goto nla_put_failure;
10667
10668 genlmsg_end(msg, hdr);
10669
10670 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10671 nl80211_mlme_mcgrp.id, gfp);
10672 return;
10673
10674 nla_put_failure:
10675 genlmsg_cancel(msg, hdr);
10676 nlmsg_free(msg);
10677 }
10678 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10679
10680 static int nl80211_netlink_notify(struct notifier_block * nb,
10681 unsigned long state,
10682 void *_notify)
10683 {
10684 struct netlink_notify *notify = _notify;
10685 struct cfg80211_registered_device *rdev;
10686 struct wireless_dev *wdev;
10687 struct cfg80211_beacon_registration *reg, *tmp;
10688
10689 if (state != NETLINK_URELEASE)
10690 return NOTIFY_DONE;
10691
10692 rcu_read_lock();
10693
10694 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10695 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10696 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10697
10698 spin_lock_bh(&rdev->beacon_registrations_lock);
10699 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10700 list) {
10701 if (reg->nlportid == notify->portid) {
10702 list_del(&reg->list);
10703 kfree(reg);
10704 break;
10705 }
10706 }
10707 spin_unlock_bh(&rdev->beacon_registrations_lock);
10708 }
10709
10710 rcu_read_unlock();
10711
10712 return NOTIFY_DONE;
10713 }
10714
10715 static struct notifier_block nl80211_netlink_notifier = {
10716 .notifier_call = nl80211_netlink_notify,
10717 };
10718
10719 void cfg80211_ft_event(struct net_device *netdev,
10720 struct cfg80211_ft_event_params *ft_event)
10721 {
10722 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10723 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10724 struct sk_buff *msg;
10725 void *hdr;
10726
10727 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10728
10729 if (!ft_event->target_ap)
10730 return;
10731
10732 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10733 if (!msg)
10734 return;
10735
10736 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10737 if (!hdr) {
10738 nlmsg_free(msg);
10739 return;
10740 }
10741
10742 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10743 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10744 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10745 if (ft_event->ies)
10746 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10747 if (ft_event->ric_ies)
10748 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10749 ft_event->ric_ies);
10750
10751 genlmsg_end(msg, hdr);
10752
10753 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10754 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10755 }
10756 EXPORT_SYMBOL(cfg80211_ft_event);
10757
10758 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10759 {
10760 struct cfg80211_registered_device *rdev;
10761 struct sk_buff *msg;
10762 void *hdr;
10763 u32 nlportid;
10764
10765 rdev = wiphy_to_dev(wdev->wiphy);
10766 if (!rdev->crit_proto_nlportid)
10767 return;
10768
10769 nlportid = rdev->crit_proto_nlportid;
10770 rdev->crit_proto_nlportid = 0;
10771
10772 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10773 if (!msg)
10774 return;
10775
10776 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10777 if (!hdr)
10778 goto nla_put_failure;
10779
10780 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10781 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10782 goto nla_put_failure;
10783
10784 genlmsg_end(msg, hdr);
10785
10786 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10787 return;
10788
10789 nla_put_failure:
10790 if (hdr)
10791 genlmsg_cancel(msg, hdr);
10792 nlmsg_free(msg);
10793
10794 }
10795 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10796
10797 /* initialisation/exit functions */
10798
10799 int nl80211_init(void)
10800 {
10801 int err;
10802
10803 err = genl_register_family_with_ops(&nl80211_fam,
10804 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10805 if (err)
10806 return err;
10807
10808 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10809 if (err)
10810 goto err_out;
10811
10812 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10813 if (err)
10814 goto err_out;
10815
10816 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10817 if (err)
10818 goto err_out;
10819
10820 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10821 if (err)
10822 goto err_out;
10823
10824 #ifdef CONFIG_NL80211_TESTMODE
10825 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10826 if (err)
10827 goto err_out;
10828 #endif
10829
10830 err = netlink_register_notifier(&nl80211_netlink_notifier);
10831 if (err)
10832 goto err_out;
10833
10834 return 0;
10835 err_out:
10836 genl_unregister_family(&nl80211_fam);
10837 return err;
10838 }
10839
10840 void nl80211_exit(void)
10841 {
10842 netlink_unregister_notifier(&nl80211_netlink_notifier);
10843 genl_unregister_family(&nl80211_fam);
10844 }
Linus' kernel tree