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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
[linux-2.6.git] / net / wireless / nl80211.c
blob25d217d90807f05f6a56945cb89dcd7b3314a53d
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, -255, 0,
4774 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4775 nla_get_s32);
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 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6617 void *hdr = ((void **)skb->cb)[1];
6618 struct nlattr *data = ((void **)skb->cb)[2];
6619
6620 nla_nest_end(skb, data);
6621 genlmsg_end(skb, hdr);
6622 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6623 nl80211_testmode_mcgrp.id, gfp);
6624 }
6625 EXPORT_SYMBOL(cfg80211_testmode_event);
6626 #endif
6627
6628 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6629 {
6630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6631 struct net_device *dev = info->user_ptr[1];
6632 struct cfg80211_connect_params connect;
6633 struct wiphy *wiphy;
6634 struct cfg80211_cached_keys *connkeys = NULL;
6635 int err;
6636
6637 memset(&connect, 0, sizeof(connect));
6638
6639 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6640 return -EINVAL;
6641
6642 if (!info->attrs[NL80211_ATTR_SSID] ||
6643 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6644 return -EINVAL;
6645
6646 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6647 connect.auth_type =
6648 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6649 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6650 NL80211_CMD_CONNECT))
6651 return -EINVAL;
6652 } else
6653 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6654
6655 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6656
6657 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6658 NL80211_MAX_NR_CIPHER_SUITES);
6659 if (err)
6660 return err;
6661
6662 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6663 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6664 return -EOPNOTSUPP;
6665
6666 wiphy = &rdev->wiphy;
6667
6668 connect.bg_scan_period = -1;
6669 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6670 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6671 connect.bg_scan_period =
6672 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6673 }
6674
6675 if (info->attrs[NL80211_ATTR_MAC])
6676 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6677 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6678 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6679
6680 if (info->attrs[NL80211_ATTR_IE]) {
6681 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6682 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6683 }
6684
6685 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6686 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6687 if (connect.mfp != NL80211_MFP_REQUIRED &&
6688 connect.mfp != NL80211_MFP_NO)
6689 return -EINVAL;
6690 } else {
6691 connect.mfp = NL80211_MFP_NO;
6692 }
6693
6694 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6695 connect.channel =
6696 ieee80211_get_channel(wiphy,
6697 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6698 if (!connect.channel ||
6699 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6700 return -EINVAL;
6701 }
6702
6703 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6704 connkeys = nl80211_parse_connkeys(rdev,
6705 info->attrs[NL80211_ATTR_KEYS], NULL);
6706 if (IS_ERR(connkeys))
6707 return PTR_ERR(connkeys);
6708 }
6709
6710 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6711 connect.flags |= ASSOC_REQ_DISABLE_HT;
6712
6713 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6714 memcpy(&connect.ht_capa_mask,
6715 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6716 sizeof(connect.ht_capa_mask));
6717
6718 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6719 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6720 kfree(connkeys);
6721 return -EINVAL;
6722 }
6723 memcpy(&connect.ht_capa,
6724 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6725 sizeof(connect.ht_capa));
6726 }
6727
6728 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6729 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6730
6731 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6732 memcpy(&connect.vht_capa_mask,
6733 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6734 sizeof(connect.vht_capa_mask));
6735
6736 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6737 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6738 kfree(connkeys);
6739 return -EINVAL;
6740 }
6741 memcpy(&connect.vht_capa,
6742 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6743 sizeof(connect.vht_capa));
6744 }
6745
6746 wdev_lock(dev->ieee80211_ptr);
6747 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6748 wdev_unlock(dev->ieee80211_ptr);
6749 if (err)
6750 kfree(connkeys);
6751 return err;
6752 }
6753
6754 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6755 {
6756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6757 struct net_device *dev = info->user_ptr[1];
6758 u16 reason;
6759 int ret;
6760
6761 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6762 reason = WLAN_REASON_DEAUTH_LEAVING;
6763 else
6764 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6765
6766 if (reason == 0)
6767 return -EINVAL;
6768
6769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6770 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6771 return -EOPNOTSUPP;
6772
6773 wdev_lock(dev->ieee80211_ptr);
6774 ret = cfg80211_disconnect(rdev, dev, reason, true);
6775 wdev_unlock(dev->ieee80211_ptr);
6776 return ret;
6777 }
6778
6779 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6780 {
6781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6782 struct net *net;
6783 int err;
6784 u32 pid;
6785
6786 if (!info->attrs[NL80211_ATTR_PID])
6787 return -EINVAL;
6788
6789 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6790
6791 net = get_net_ns_by_pid(pid);
6792 if (IS_ERR(net))
6793 return PTR_ERR(net);
6794
6795 err = 0;
6796
6797 /* check if anything to do */
6798 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6799 err = cfg80211_switch_netns(rdev, net);
6800
6801 put_net(net);
6802 return err;
6803 }
6804
6805 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6806 {
6807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6808 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6809 struct cfg80211_pmksa *pmksa) = NULL;
6810 struct net_device *dev = info->user_ptr[1];
6811 struct cfg80211_pmksa pmksa;
6812
6813 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6814
6815 if (!info->attrs[NL80211_ATTR_MAC])
6816 return -EINVAL;
6817
6818 if (!info->attrs[NL80211_ATTR_PMKID])
6819 return -EINVAL;
6820
6821 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6822 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6823
6824 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6825 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6826 return -EOPNOTSUPP;
6827
6828 switch (info->genlhdr->cmd) {
6829 case NL80211_CMD_SET_PMKSA:
6830 rdev_ops = rdev->ops->set_pmksa;
6831 break;
6832 case NL80211_CMD_DEL_PMKSA:
6833 rdev_ops = rdev->ops->del_pmksa;
6834 break;
6835 default:
6836 WARN_ON(1);
6837 break;
6838 }
6839
6840 if (!rdev_ops)
6841 return -EOPNOTSUPP;
6842
6843 return rdev_ops(&rdev->wiphy, dev, &pmksa);
6844 }
6845
6846 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6847 {
6848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6849 struct net_device *dev = info->user_ptr[1];
6850
6851 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6852 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6853 return -EOPNOTSUPP;
6854
6855 if (!rdev->ops->flush_pmksa)
6856 return -EOPNOTSUPP;
6857
6858 return rdev_flush_pmksa(rdev, dev);
6859 }
6860
6861 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6862 {
6863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6864 struct net_device *dev = info->user_ptr[1];
6865 u8 action_code, dialog_token;
6866 u16 status_code;
6867 u8 *peer;
6868
6869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6870 !rdev->ops->tdls_mgmt)
6871 return -EOPNOTSUPP;
6872
6873 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6874 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6875 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6876 !info->attrs[NL80211_ATTR_IE] ||
6877 !info->attrs[NL80211_ATTR_MAC])
6878 return -EINVAL;
6879
6880 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6881 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6882 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6883 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6884
6885 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6886 dialog_token, status_code,
6887 nla_data(info->attrs[NL80211_ATTR_IE]),
6888 nla_len(info->attrs[NL80211_ATTR_IE]));
6889 }
6890
6891 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6892 {
6893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6894 struct net_device *dev = info->user_ptr[1];
6895 enum nl80211_tdls_operation operation;
6896 u8 *peer;
6897
6898 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6899 !rdev->ops->tdls_oper)
6900 return -EOPNOTSUPP;
6901
6902 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6903 !info->attrs[NL80211_ATTR_MAC])
6904 return -EINVAL;
6905
6906 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6907 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6908
6909 return rdev_tdls_oper(rdev, dev, peer, operation);
6910 }
6911
6912 static int nl80211_remain_on_channel(struct sk_buff *skb,
6913 struct genl_info *info)
6914 {
6915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6916 struct wireless_dev *wdev = info->user_ptr[1];
6917 struct cfg80211_chan_def chandef;
6918 struct sk_buff *msg;
6919 void *hdr;
6920 u64 cookie;
6921 u32 duration;
6922 int err;
6923
6924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6925 !info->attrs[NL80211_ATTR_DURATION])
6926 return -EINVAL;
6927
6928 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6929
6930 if (!rdev->ops->remain_on_channel ||
6931 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6932 return -EOPNOTSUPP;
6933
6934 /*
6935 * We should be on that channel for at least a minimum amount of
6936 * time (10ms) but no longer than the driver supports.
6937 */
6938 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6939 duration > rdev->wiphy.max_remain_on_channel_duration)
6940 return -EINVAL;
6941
6942 err = nl80211_parse_chandef(rdev, info, &chandef);
6943 if (err)
6944 return err;
6945
6946 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6947 if (!msg)
6948 return -ENOMEM;
6949
6950 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6951 NL80211_CMD_REMAIN_ON_CHANNEL);
6952
6953 if (IS_ERR(hdr)) {
6954 err = PTR_ERR(hdr);
6955 goto free_msg;
6956 }
6957
6958 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6959 duration, &cookie);
6960
6961 if (err)
6962 goto free_msg;
6963
6964 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6965 goto nla_put_failure;
6966
6967 genlmsg_end(msg, hdr);
6968
6969 return genlmsg_reply(msg, info);
6970
6971 nla_put_failure:
6972 err = -ENOBUFS;
6973 free_msg:
6974 nlmsg_free(msg);
6975 return err;
6976 }
6977
6978 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6979 struct genl_info *info)
6980 {
6981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6982 struct wireless_dev *wdev = info->user_ptr[1];
6983 u64 cookie;
6984
6985 if (!info->attrs[NL80211_ATTR_COOKIE])
6986 return -EINVAL;
6987
6988 if (!rdev->ops->cancel_remain_on_channel)
6989 return -EOPNOTSUPP;
6990
6991 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6992
6993 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6994 }
6995
6996 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6997 u8 *rates, u8 rates_len)
6998 {
6999 u8 i;
7000 u32 mask = 0;
7001
7002 for (i = 0; i < rates_len; i++) {
7003 int rate = (rates[i] & 0x7f) * 5;
7004 int ridx;
7005 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7006 struct ieee80211_rate *srate =
7007 &sband->bitrates[ridx];
7008 if (rate == srate->bitrate) {
7009 mask |= 1 << ridx;
7010 break;
7011 }
7012 }
7013 if (ridx == sband->n_bitrates)
7014 return 0; /* rate not found */
7015 }
7016
7017 return mask;
7018 }
7019
7020 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7021 u8 *rates, u8 rates_len,
7022 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7023 {
7024 u8 i;
7025
7026 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7027
7028 for (i = 0; i < rates_len; i++) {
7029 int ridx, rbit;
7030
7031 ridx = rates[i] / 8;
7032 rbit = BIT(rates[i] % 8);
7033
7034 /* check validity */
7035 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7036 return false;
7037
7038 /* check availability */
7039 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7040 mcs[ridx] |= rbit;
7041 else
7042 return false;
7043 }
7044
7045 return true;
7046 }
7047
7048 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7049 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7050 .len = NL80211_MAX_SUPP_RATES },
7051 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7052 .len = NL80211_MAX_SUPP_HT_RATES },
7053 };
7054
7055 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7056 struct genl_info *info)
7057 {
7058 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7060 struct cfg80211_bitrate_mask mask;
7061 int rem, i;
7062 struct net_device *dev = info->user_ptr[1];
7063 struct nlattr *tx_rates;
7064 struct ieee80211_supported_band *sband;
7065
7066 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7067 return -EINVAL;
7068
7069 if (!rdev->ops->set_bitrate_mask)
7070 return -EOPNOTSUPP;
7071
7072 memset(&mask, 0, sizeof(mask));
7073 /* Default to all rates enabled */
7074 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7075 sband = rdev->wiphy.bands[i];
7076 mask.control[i].legacy =
7077 sband ? (1 << sband->n_bitrates) - 1 : 0;
7078 if (sband)
7079 memcpy(mask.control[i].mcs,
7080 sband->ht_cap.mcs.rx_mask,
7081 sizeof(mask.control[i].mcs));
7082 else
7083 memset(mask.control[i].mcs, 0,
7084 sizeof(mask.control[i].mcs));
7085 }
7086
7087 /*
7088 * The nested attribute uses enum nl80211_band as the index. This maps
7089 * directly to the enum ieee80211_band values used in cfg80211.
7090 */
7091 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7092 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7093 {
7094 enum ieee80211_band band = nla_type(tx_rates);
7095 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7096 return -EINVAL;
7097 sband = rdev->wiphy.bands[band];
7098 if (sband == NULL)
7099 return -EINVAL;
7100 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7101 nla_len(tx_rates), nl80211_txattr_policy);
7102 if (tb[NL80211_TXRATE_LEGACY]) {
7103 mask.control[band].legacy = rateset_to_mask(
7104 sband,
7105 nla_data(tb[NL80211_TXRATE_LEGACY]),
7106 nla_len(tb[NL80211_TXRATE_LEGACY]));
7107 if ((mask.control[band].legacy == 0) &&
7108 nla_len(tb[NL80211_TXRATE_LEGACY]))
7109 return -EINVAL;
7110 }
7111 if (tb[NL80211_TXRATE_MCS]) {
7112 if (!ht_rateset_to_mask(
7113 sband,
7114 nla_data(tb[NL80211_TXRATE_MCS]),
7115 nla_len(tb[NL80211_TXRATE_MCS]),
7116 mask.control[band].mcs))
7117 return -EINVAL;
7118 }
7119
7120 if (mask.control[band].legacy == 0) {
7121 /* don't allow empty legacy rates if HT
7122 * is not even supported. */
7123 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7124 return -EINVAL;
7125
7126 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7127 if (mask.control[band].mcs[i])
7128 break;
7129
7130 /* legacy and mcs rates may not be both empty */
7131 if (i == IEEE80211_HT_MCS_MASK_LEN)
7132 return -EINVAL;
7133 }
7134 }
7135
7136 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7137 }
7138
7139 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7140 {
7141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7142 struct wireless_dev *wdev = info->user_ptr[1];
7143 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7144
7145 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7146 return -EINVAL;
7147
7148 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7149 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7150
7151 switch (wdev->iftype) {
7152 case NL80211_IFTYPE_STATION:
7153 case NL80211_IFTYPE_ADHOC:
7154 case NL80211_IFTYPE_P2P_CLIENT:
7155 case NL80211_IFTYPE_AP:
7156 case NL80211_IFTYPE_AP_VLAN:
7157 case NL80211_IFTYPE_MESH_POINT:
7158 case NL80211_IFTYPE_P2P_GO:
7159 case NL80211_IFTYPE_P2P_DEVICE:
7160 break;
7161 default:
7162 return -EOPNOTSUPP;
7163 }
7164
7165 /* not much point in registering if we can't reply */
7166 if (!rdev->ops->mgmt_tx)
7167 return -EOPNOTSUPP;
7168
7169 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7170 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7171 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7172 }
7173
7174 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7175 {
7176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7177 struct wireless_dev *wdev = info->user_ptr[1];
7178 struct cfg80211_chan_def chandef;
7179 int err;
7180 void *hdr = NULL;
7181 u64 cookie;
7182 struct sk_buff *msg = NULL;
7183 unsigned int wait = 0;
7184 bool offchan, no_cck, dont_wait_for_ack;
7185
7186 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7187
7188 if (!info->attrs[NL80211_ATTR_FRAME])
7189 return -EINVAL;
7190
7191 if (!rdev->ops->mgmt_tx)
7192 return -EOPNOTSUPP;
7193
7194 switch (wdev->iftype) {
7195 case NL80211_IFTYPE_P2P_DEVICE:
7196 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7197 return -EINVAL;
7198 case NL80211_IFTYPE_STATION:
7199 case NL80211_IFTYPE_ADHOC:
7200 case NL80211_IFTYPE_P2P_CLIENT:
7201 case NL80211_IFTYPE_AP:
7202 case NL80211_IFTYPE_AP_VLAN:
7203 case NL80211_IFTYPE_MESH_POINT:
7204 case NL80211_IFTYPE_P2P_GO:
7205 break;
7206 default:
7207 return -EOPNOTSUPP;
7208 }
7209
7210 if (info->attrs[NL80211_ATTR_DURATION]) {
7211 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7212 return -EINVAL;
7213 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7214
7215 /*
7216 * We should wait on the channel for at least a minimum amount
7217 * of time (10ms) but no longer than the driver supports.
7218 */
7219 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7220 wait > rdev->wiphy.max_remain_on_channel_duration)
7221 return -EINVAL;
7222
7223 }
7224
7225 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7226
7227 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7228 return -EINVAL;
7229
7230 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7231
7232 /* get the channel if any has been specified, otherwise pass NULL to
7233 * the driver. The latter will use the current one
7234 */
7235 chandef.chan = NULL;
7236 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7237 err = nl80211_parse_chandef(rdev, info, &chandef);
7238 if (err)
7239 return err;
7240 }
7241
7242 if (!chandef.chan && offchan)
7243 return -EINVAL;
7244
7245 if (!dont_wait_for_ack) {
7246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7247 if (!msg)
7248 return -ENOMEM;
7249
7250 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7251 NL80211_CMD_FRAME);
7252
7253 if (IS_ERR(hdr)) {
7254 err = PTR_ERR(hdr);
7255 goto free_msg;
7256 }
7257 }
7258
7259 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7260 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7261 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7262 no_cck, dont_wait_for_ack, &cookie);
7263 if (err)
7264 goto free_msg;
7265
7266 if (msg) {
7267 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7268 goto nla_put_failure;
7269
7270 genlmsg_end(msg, hdr);
7271 return genlmsg_reply(msg, info);
7272 }
7273
7274 return 0;
7275
7276 nla_put_failure:
7277 err = -ENOBUFS;
7278 free_msg:
7279 nlmsg_free(msg);
7280 return err;
7281 }
7282
7283 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7284 {
7285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7286 struct wireless_dev *wdev = info->user_ptr[1];
7287 u64 cookie;
7288
7289 if (!info->attrs[NL80211_ATTR_COOKIE])
7290 return -EINVAL;
7291
7292 if (!rdev->ops->mgmt_tx_cancel_wait)
7293 return -EOPNOTSUPP;
7294
7295 switch (wdev->iftype) {
7296 case NL80211_IFTYPE_STATION:
7297 case NL80211_IFTYPE_ADHOC:
7298 case NL80211_IFTYPE_P2P_CLIENT:
7299 case NL80211_IFTYPE_AP:
7300 case NL80211_IFTYPE_AP_VLAN:
7301 case NL80211_IFTYPE_P2P_GO:
7302 case NL80211_IFTYPE_P2P_DEVICE:
7303 break;
7304 default:
7305 return -EOPNOTSUPP;
7306 }
7307
7308 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7309
7310 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7311 }
7312
7313 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7314 {
7315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7316 struct wireless_dev *wdev;
7317 struct net_device *dev = info->user_ptr[1];
7318 u8 ps_state;
7319 bool state;
7320 int err;
7321
7322 if (!info->attrs[NL80211_ATTR_PS_STATE])
7323 return -EINVAL;
7324
7325 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7326
7327 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7328 return -EINVAL;
7329
7330 wdev = dev->ieee80211_ptr;
7331
7332 if (!rdev->ops->set_power_mgmt)
7333 return -EOPNOTSUPP;
7334
7335 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7336
7337 if (state == wdev->ps)
7338 return 0;
7339
7340 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7341 if (!err)
7342 wdev->ps = state;
7343 return err;
7344 }
7345
7346 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7347 {
7348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349 enum nl80211_ps_state ps_state;
7350 struct wireless_dev *wdev;
7351 struct net_device *dev = info->user_ptr[1];
7352 struct sk_buff *msg;
7353 void *hdr;
7354 int err;
7355
7356 wdev = dev->ieee80211_ptr;
7357
7358 if (!rdev->ops->set_power_mgmt)
7359 return -EOPNOTSUPP;
7360
7361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7362 if (!msg)
7363 return -ENOMEM;
7364
7365 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7366 NL80211_CMD_GET_POWER_SAVE);
7367 if (!hdr) {
7368 err = -ENOBUFS;
7369 goto free_msg;
7370 }
7371
7372 if (wdev->ps)
7373 ps_state = NL80211_PS_ENABLED;
7374 else
7375 ps_state = NL80211_PS_DISABLED;
7376
7377 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7378 goto nla_put_failure;
7379
7380 genlmsg_end(msg, hdr);
7381 return genlmsg_reply(msg, info);
7382
7383 nla_put_failure:
7384 err = -ENOBUFS;
7385 free_msg:
7386 nlmsg_free(msg);
7387 return err;
7388 }
7389
7390 static struct nla_policy
7391 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7392 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7393 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7394 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7395 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7396 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7397 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7398 };
7399
7400 static int nl80211_set_cqm_txe(struct genl_info *info,
7401 u32 rate, u32 pkts, u32 intvl)
7402 {
7403 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7404 struct wireless_dev *wdev;
7405 struct net_device *dev = info->user_ptr[1];
7406
7407 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7408 return -EINVAL;
7409
7410 wdev = dev->ieee80211_ptr;
7411
7412 if (!rdev->ops->set_cqm_txe_config)
7413 return -EOPNOTSUPP;
7414
7415 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7416 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7417 return -EOPNOTSUPP;
7418
7419 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7420 }
7421
7422 static int nl80211_set_cqm_rssi(struct genl_info *info,
7423 s32 threshold, u32 hysteresis)
7424 {
7425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7426 struct wireless_dev *wdev;
7427 struct net_device *dev = info->user_ptr[1];
7428
7429 if (threshold > 0)
7430 return -EINVAL;
7431
7432 wdev = dev->ieee80211_ptr;
7433
7434 if (!rdev->ops->set_cqm_rssi_config)
7435 return -EOPNOTSUPP;
7436
7437 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7438 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7439 return -EOPNOTSUPP;
7440
7441 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7442 }
7443
7444 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7445 {
7446 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7447 struct nlattr *cqm;
7448 int err;
7449
7450 cqm = info->attrs[NL80211_ATTR_CQM];
7451 if (!cqm) {
7452 err = -EINVAL;
7453 goto out;
7454 }
7455
7456 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7457 nl80211_attr_cqm_policy);
7458 if (err)
7459 goto out;
7460
7461 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7462 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7463 s32 threshold;
7464 u32 hysteresis;
7465 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7466 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7467 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7468 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7469 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7470 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7471 u32 rate, pkts, intvl;
7472 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7473 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7474 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7475 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7476 } else
7477 err = -EINVAL;
7478
7479 out:
7480 return err;
7481 }
7482
7483 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7484 {
7485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7486 struct net_device *dev = info->user_ptr[1];
7487 struct mesh_config cfg;
7488 struct mesh_setup setup;
7489 int err;
7490
7491 /* start with default */
7492 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7493 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7494
7495 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7496 /* and parse parameters if given */
7497 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7498 if (err)
7499 return err;
7500 }
7501
7502 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7503 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7504 return -EINVAL;
7505
7506 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7507 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7508
7509 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7510 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7511 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7512 return -EINVAL;
7513
7514 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7515 setup.beacon_interval =
7516 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7517 if (setup.beacon_interval < 10 ||
7518 setup.beacon_interval > 10000)
7519 return -EINVAL;
7520 }
7521
7522 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7523 setup.dtim_period =
7524 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7525 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7526 return -EINVAL;
7527 }
7528
7529 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7530 /* parse additional setup parameters if given */
7531 err = nl80211_parse_mesh_setup(info, &setup);
7532 if (err)
7533 return err;
7534 }
7535
7536 if (setup.user_mpm)
7537 cfg.auto_open_plinks = false;
7538
7539 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7540 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7541 if (err)
7542 return err;
7543 } else {
7544 /* cfg80211_join_mesh() will sort it out */
7545 setup.chandef.chan = NULL;
7546 }
7547
7548 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7549 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7550 int n_rates =
7551 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7552 struct ieee80211_supported_band *sband;
7553
7554 if (!setup.chandef.chan)
7555 return -EINVAL;
7556
7557 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7558
7559 err = ieee80211_get_ratemask(sband, rates, n_rates,
7560 &setup.basic_rates);
7561 if (err)
7562 return err;
7563 }
7564
7565 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7566 }
7567
7568 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7569 {
7570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7571 struct net_device *dev = info->user_ptr[1];
7572
7573 return cfg80211_leave_mesh(rdev, dev);
7574 }
7575
7576 #ifdef CONFIG_PM
7577 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7578 struct cfg80211_registered_device *rdev)
7579 {
7580 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7581 struct nlattr *nl_pats, *nl_pat;
7582 int i, pat_len;
7583
7584 if (!wowlan->n_patterns)
7585 return 0;
7586
7587 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7588 if (!nl_pats)
7589 return -ENOBUFS;
7590
7591 for (i = 0; i < wowlan->n_patterns; i++) {
7592 nl_pat = nla_nest_start(msg, i + 1);
7593 if (!nl_pat)
7594 return -ENOBUFS;
7595 pat_len = wowlan->patterns[i].pattern_len;
7596 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7597 DIV_ROUND_UP(pat_len, 8),
7598 wowlan->patterns[i].mask) ||
7599 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7600 pat_len, wowlan->patterns[i].pattern) ||
7601 nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7602 wowlan->patterns[i].pkt_offset))
7603 return -ENOBUFS;
7604 nla_nest_end(msg, nl_pat);
7605 }
7606 nla_nest_end(msg, nl_pats);
7607
7608 return 0;
7609 }
7610
7611 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7612 struct cfg80211_wowlan_tcp *tcp)
7613 {
7614 struct nlattr *nl_tcp;
7615
7616 if (!tcp)
7617 return 0;
7618
7619 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7620 if (!nl_tcp)
7621 return -ENOBUFS;
7622
7623 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7624 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7625 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7626 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7627 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7628 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7629 tcp->payload_len, tcp->payload) ||
7630 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7631 tcp->data_interval) ||
7632 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7633 tcp->wake_len, tcp->wake_data) ||
7634 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7635 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7636 return -ENOBUFS;
7637
7638 if (tcp->payload_seq.len &&
7639 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7640 sizeof(tcp->payload_seq), &tcp->payload_seq))
7641 return -ENOBUFS;
7642
7643 if (tcp->payload_tok.len &&
7644 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7645 sizeof(tcp->payload_tok) + tcp->tokens_size,
7646 &tcp->payload_tok))
7647 return -ENOBUFS;
7648
7649 nla_nest_end(msg, nl_tcp);
7650
7651 return 0;
7652 }
7653
7654 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7655 {
7656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7657 struct sk_buff *msg;
7658 void *hdr;
7659 u32 size = NLMSG_DEFAULT_SIZE;
7660
7661 if (!rdev->wiphy.wowlan)
7662 return -EOPNOTSUPP;
7663
7664 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7665 /* adjust size to have room for all the data */
7666 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7667 rdev->wiphy.wowlan_config->tcp->payload_len +
7668 rdev->wiphy.wowlan_config->tcp->wake_len +
7669 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7670 }
7671
7672 msg = nlmsg_new(size, GFP_KERNEL);
7673 if (!msg)
7674 return -ENOMEM;
7675
7676 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7677 NL80211_CMD_GET_WOWLAN);
7678 if (!hdr)
7679 goto nla_put_failure;
7680
7681 if (rdev->wiphy.wowlan_config) {
7682 struct nlattr *nl_wowlan;
7683
7684 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7685 if (!nl_wowlan)
7686 goto nla_put_failure;
7687
7688 if ((rdev->wiphy.wowlan_config->any &&
7689 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7690 (rdev->wiphy.wowlan_config->disconnect &&
7691 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7692 (rdev->wiphy.wowlan_config->magic_pkt &&
7693 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7694 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7695 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7696 (rdev->wiphy.wowlan_config->eap_identity_req &&
7697 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7698 (rdev->wiphy.wowlan_config->four_way_handshake &&
7699 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7700 (rdev->wiphy.wowlan_config->rfkill_release &&
7701 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7702 goto nla_put_failure;
7703
7704 if (nl80211_send_wowlan_patterns(msg, rdev))
7705 goto nla_put_failure;
7706
7707 if (nl80211_send_wowlan_tcp(msg,
7708 rdev->wiphy.wowlan_config->tcp))
7709 goto nla_put_failure;
7710
7711 nla_nest_end(msg, nl_wowlan);
7712 }
7713
7714 genlmsg_end(msg, hdr);
7715 return genlmsg_reply(msg, info);
7716
7717 nla_put_failure:
7718 nlmsg_free(msg);
7719 return -ENOBUFS;
7720 }
7721
7722 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7723 struct nlattr *attr,
7724 struct cfg80211_wowlan *trig)
7725 {
7726 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7727 struct cfg80211_wowlan_tcp *cfg;
7728 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7729 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7730 u32 size;
7731 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7732 int err, port;
7733
7734 if (!rdev->wiphy.wowlan->tcp)
7735 return -EINVAL;
7736
7737 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7738 nla_data(attr), nla_len(attr),
7739 nl80211_wowlan_tcp_policy);
7740 if (err)
7741 return err;
7742
7743 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7744 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7745 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7746 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7747 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7748 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7749 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7750 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7751 return -EINVAL;
7752
7753 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7754 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7755 return -EINVAL;
7756
7757 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7758 rdev->wiphy.wowlan->tcp->data_interval_max ||
7759 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7760 return -EINVAL;
7761
7762 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7763 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7764 return -EINVAL;
7765
7766 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7767 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7768 return -EINVAL;
7769
7770 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7771 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7772
7773 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7774 tokens_size = tokln - sizeof(*tok);
7775
7776 if (!tok->len || tokens_size % tok->len)
7777 return -EINVAL;
7778 if (!rdev->wiphy.wowlan->tcp->tok)
7779 return -EINVAL;
7780 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7781 return -EINVAL;
7782 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7783 return -EINVAL;
7784 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7785 return -EINVAL;
7786 if (tok->offset + tok->len > data_size)
7787 return -EINVAL;
7788 }
7789
7790 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7791 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7792 if (!rdev->wiphy.wowlan->tcp->seq)
7793 return -EINVAL;
7794 if (seq->len == 0 || seq->len > 4)
7795 return -EINVAL;
7796 if (seq->len + seq->offset > data_size)
7797 return -EINVAL;
7798 }
7799
7800 size = sizeof(*cfg);
7801 size += data_size;
7802 size += wake_size + wake_mask_size;
7803 size += tokens_size;
7804
7805 cfg = kzalloc(size, GFP_KERNEL);
7806 if (!cfg)
7807 return -ENOMEM;
7808 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7809 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7810 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7811 ETH_ALEN);
7812 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7813 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7814 else
7815 port = 0;
7816 #ifdef CONFIG_INET
7817 /* allocate a socket and port for it and use it */
7818 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7819 IPPROTO_TCP, &cfg->sock, 1);
7820 if (err) {
7821 kfree(cfg);
7822 return err;
7823 }
7824 if (inet_csk_get_port(cfg->sock->sk, port)) {
7825 sock_release(cfg->sock);
7826 kfree(cfg);
7827 return -EADDRINUSE;
7828 }
7829 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7830 #else
7831 if (!port) {
7832 kfree(cfg);
7833 return -EINVAL;
7834 }
7835 cfg->src_port = port;
7836 #endif
7837
7838 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7839 cfg->payload_len = data_size;
7840 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7841 memcpy((void *)cfg->payload,
7842 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7843 data_size);
7844 if (seq)
7845 cfg->payload_seq = *seq;
7846 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7847 cfg->wake_len = wake_size;
7848 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7849 memcpy((void *)cfg->wake_data,
7850 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7851 wake_size);
7852 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7853 data_size + wake_size;
7854 memcpy((void *)cfg->wake_mask,
7855 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7856 wake_mask_size);
7857 if (tok) {
7858 cfg->tokens_size = tokens_size;
7859 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7860 }
7861
7862 trig->tcp = cfg;
7863
7864 return 0;
7865 }
7866
7867 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7868 {
7869 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7870 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7871 struct cfg80211_wowlan new_triggers = {};
7872 struct cfg80211_wowlan *ntrig;
7873 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7874 int err, i;
7875 bool prev_enabled = rdev->wiphy.wowlan_config;
7876
7877 if (!wowlan)
7878 return -EOPNOTSUPP;
7879
7880 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7881 cfg80211_rdev_free_wowlan(rdev);
7882 rdev->wiphy.wowlan_config = NULL;
7883 goto set_wakeup;
7884 }
7885
7886 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7887 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7888 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7889 nl80211_wowlan_policy);
7890 if (err)
7891 return err;
7892
7893 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7894 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7895 return -EINVAL;
7896 new_triggers.any = true;
7897 }
7898
7899 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7900 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7901 return -EINVAL;
7902 new_triggers.disconnect = true;
7903 }
7904
7905 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7906 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7907 return -EINVAL;
7908 new_triggers.magic_pkt = true;
7909 }
7910
7911 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7912 return -EINVAL;
7913
7914 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7915 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7916 return -EINVAL;
7917 new_triggers.gtk_rekey_failure = true;
7918 }
7919
7920 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7921 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7922 return -EINVAL;
7923 new_triggers.eap_identity_req = true;
7924 }
7925
7926 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7927 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7928 return -EINVAL;
7929 new_triggers.four_way_handshake = true;
7930 }
7931
7932 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7933 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7934 return -EINVAL;
7935 new_triggers.rfkill_release = true;
7936 }
7937
7938 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7939 struct nlattr *pat;
7940 int n_patterns = 0;
7941 int rem, pat_len, mask_len, pkt_offset;
7942 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7943
7944 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7945 rem)
7946 n_patterns++;
7947 if (n_patterns > wowlan->n_patterns)
7948 return -EINVAL;
7949
7950 new_triggers.patterns = kcalloc(n_patterns,
7951 sizeof(new_triggers.patterns[0]),
7952 GFP_KERNEL);
7953 if (!new_triggers.patterns)
7954 return -ENOMEM;
7955
7956 new_triggers.n_patterns = n_patterns;
7957 i = 0;
7958
7959 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7960 rem) {
7961 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7962 nla_data(pat), nla_len(pat), NULL);
7963 err = -EINVAL;
7964 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7965 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7966 goto error;
7967 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7968 mask_len = DIV_ROUND_UP(pat_len, 8);
7969 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7970 mask_len)
7971 goto error;
7972 if (pat_len > wowlan->pattern_max_len ||
7973 pat_len < wowlan->pattern_min_len)
7974 goto error;
7975
7976 if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7977 pkt_offset = 0;
7978 else
7979 pkt_offset = nla_get_u32(
7980 pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7981 if (pkt_offset > wowlan->max_pkt_offset)
7982 goto error;
7983 new_triggers.patterns[i].pkt_offset = pkt_offset;
7984
7985 new_triggers.patterns[i].mask =
7986 kmalloc(mask_len + pat_len, GFP_KERNEL);
7987 if (!new_triggers.patterns[i].mask) {
7988 err = -ENOMEM;
7989 goto error;
7990 }
7991 new_triggers.patterns[i].pattern =
7992 new_triggers.patterns[i].mask + mask_len;
7993 memcpy(new_triggers.patterns[i].mask,
7994 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7995 mask_len);
7996 new_triggers.patterns[i].pattern_len = pat_len;
7997 memcpy(new_triggers.patterns[i].pattern,
7998 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7999 pat_len);
8000 i++;
8001 }
8002 }
8003
8004 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8005 err = nl80211_parse_wowlan_tcp(
8006 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8007 &new_triggers);
8008 if (err)
8009 goto error;
8010 }
8011
8012 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8013 if (!ntrig) {
8014 err = -ENOMEM;
8015 goto error;
8016 }
8017 cfg80211_rdev_free_wowlan(rdev);
8018 rdev->wiphy.wowlan_config = ntrig;
8019
8020 set_wakeup:
8021 if (rdev->ops->set_wakeup &&
8022 prev_enabled != !!rdev->wiphy.wowlan_config)
8023 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8024
8025 return 0;
8026 error:
8027 for (i = 0; i < new_triggers.n_patterns; i++)
8028 kfree(new_triggers.patterns[i].mask);
8029 kfree(new_triggers.patterns);
8030 if (new_triggers.tcp && new_triggers.tcp->sock)
8031 sock_release(new_triggers.tcp->sock);
8032 kfree(new_triggers.tcp);
8033 return err;
8034 }
8035 #endif
8036
8037 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8038 {
8039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8040 struct net_device *dev = info->user_ptr[1];
8041 struct wireless_dev *wdev = dev->ieee80211_ptr;
8042 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8043 struct cfg80211_gtk_rekey_data rekey_data;
8044 int err;
8045
8046 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8047 return -EINVAL;
8048
8049 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8050 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8051 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8052 nl80211_rekey_policy);
8053 if (err)
8054 return err;
8055
8056 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8057 return -ERANGE;
8058 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8059 return -ERANGE;
8060 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8061 return -ERANGE;
8062
8063 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8064 NL80211_KEK_LEN);
8065 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8066 NL80211_KCK_LEN);
8067 memcpy(rekey_data.replay_ctr,
8068 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8069 NL80211_REPLAY_CTR_LEN);
8070
8071 wdev_lock(wdev);
8072 if (!wdev->current_bss) {
8073 err = -ENOTCONN;
8074 goto out;
8075 }
8076
8077 if (!rdev->ops->set_rekey_data) {
8078 err = -EOPNOTSUPP;
8079 goto out;
8080 }
8081
8082 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8083 out:
8084 wdev_unlock(wdev);
8085 return err;
8086 }
8087
8088 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8089 struct genl_info *info)
8090 {
8091 struct net_device *dev = info->user_ptr[1];
8092 struct wireless_dev *wdev = dev->ieee80211_ptr;
8093
8094 if (wdev->iftype != NL80211_IFTYPE_AP &&
8095 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8096 return -EINVAL;
8097
8098 if (wdev->ap_unexpected_nlportid)
8099 return -EBUSY;
8100
8101 wdev->ap_unexpected_nlportid = info->snd_portid;
8102 return 0;
8103 }
8104
8105 static int nl80211_probe_client(struct sk_buff *skb,
8106 struct genl_info *info)
8107 {
8108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8109 struct net_device *dev = info->user_ptr[1];
8110 struct wireless_dev *wdev = dev->ieee80211_ptr;
8111 struct sk_buff *msg;
8112 void *hdr;
8113 const u8 *addr;
8114 u64 cookie;
8115 int err;
8116
8117 if (wdev->iftype != NL80211_IFTYPE_AP &&
8118 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8119 return -EOPNOTSUPP;
8120
8121 if (!info->attrs[NL80211_ATTR_MAC])
8122 return -EINVAL;
8123
8124 if (!rdev->ops->probe_client)
8125 return -EOPNOTSUPP;
8126
8127 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8128 if (!msg)
8129 return -ENOMEM;
8130
8131 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8132 NL80211_CMD_PROBE_CLIENT);
8133
8134 if (IS_ERR(hdr)) {
8135 err = PTR_ERR(hdr);
8136 goto free_msg;
8137 }
8138
8139 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8140
8141 err = rdev_probe_client(rdev, dev, addr, &cookie);
8142 if (err)
8143 goto free_msg;
8144
8145 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8146 goto nla_put_failure;
8147
8148 genlmsg_end(msg, hdr);
8149
8150 return genlmsg_reply(msg, info);
8151
8152 nla_put_failure:
8153 err = -ENOBUFS;
8154 free_msg:
8155 nlmsg_free(msg);
8156 return err;
8157 }
8158
8159 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8160 {
8161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8162 struct cfg80211_beacon_registration *reg, *nreg;
8163 int rv;
8164
8165 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8166 return -EOPNOTSUPP;
8167
8168 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8169 if (!nreg)
8170 return -ENOMEM;
8171
8172 /* First, check if already registered. */
8173 spin_lock_bh(&rdev->beacon_registrations_lock);
8174 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8175 if (reg->nlportid == info->snd_portid) {
8176 rv = -EALREADY;
8177 goto out_err;
8178 }
8179 }
8180 /* Add it to the list */
8181 nreg->nlportid = info->snd_portid;
8182 list_add(&nreg->list, &rdev->beacon_registrations);
8183
8184 spin_unlock_bh(&rdev->beacon_registrations_lock);
8185
8186 return 0;
8187 out_err:
8188 spin_unlock_bh(&rdev->beacon_registrations_lock);
8189 kfree(nreg);
8190 return rv;
8191 }
8192
8193 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8194 {
8195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8196 struct wireless_dev *wdev = info->user_ptr[1];
8197 int err;
8198
8199 if (!rdev->ops->start_p2p_device)
8200 return -EOPNOTSUPP;
8201
8202 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8203 return -EOPNOTSUPP;
8204
8205 if (wdev->p2p_started)
8206 return 0;
8207
8208 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8209 if (err)
8210 return err;
8211
8212 err = rdev_start_p2p_device(rdev, wdev);
8213 if (err)
8214 return err;
8215
8216 wdev->p2p_started = true;
8217 rdev->opencount++;
8218
8219 return 0;
8220 }
8221
8222 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8223 {
8224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8225 struct wireless_dev *wdev = info->user_ptr[1];
8226
8227 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8228 return -EOPNOTSUPP;
8229
8230 if (!rdev->ops->stop_p2p_device)
8231 return -EOPNOTSUPP;
8232
8233 cfg80211_stop_p2p_device(rdev, wdev);
8234
8235 return 0;
8236 }
8237
8238 static int nl80211_get_protocol_features(struct sk_buff *skb,
8239 struct genl_info *info)
8240 {
8241 void *hdr;
8242 struct sk_buff *msg;
8243
8244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8245 if (!msg)
8246 return -ENOMEM;
8247
8248 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8249 NL80211_CMD_GET_PROTOCOL_FEATURES);
8250 if (!hdr)
8251 goto nla_put_failure;
8252
8253 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8254 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8255 goto nla_put_failure;
8256
8257 genlmsg_end(msg, hdr);
8258 return genlmsg_reply(msg, info);
8259
8260 nla_put_failure:
8261 kfree_skb(msg);
8262 return -ENOBUFS;
8263 }
8264
8265 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8266 {
8267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8268 struct cfg80211_update_ft_ies_params ft_params;
8269 struct net_device *dev = info->user_ptr[1];
8270
8271 if (!rdev->ops->update_ft_ies)
8272 return -EOPNOTSUPP;
8273
8274 if (!info->attrs[NL80211_ATTR_MDID] ||
8275 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8276 return -EINVAL;
8277
8278 memset(&ft_params, 0, sizeof(ft_params));
8279 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8280 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8281 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8282
8283 return rdev_update_ft_ies(rdev, dev, &ft_params);
8284 }
8285
8286 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8287 struct genl_info *info)
8288 {
8289 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8290 struct wireless_dev *wdev = info->user_ptr[1];
8291 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8292 u16 duration;
8293 int ret;
8294
8295 if (!rdev->ops->crit_proto_start)
8296 return -EOPNOTSUPP;
8297
8298 if (WARN_ON(!rdev->ops->crit_proto_stop))
8299 return -EINVAL;
8300
8301 if (rdev->crit_proto_nlportid)
8302 return -EBUSY;
8303
8304 /* determine protocol if provided */
8305 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8306 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8307
8308 if (proto >= NUM_NL80211_CRIT_PROTO)
8309 return -EINVAL;
8310
8311 /* timeout must be provided */
8312 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8313 return -EINVAL;
8314
8315 duration =
8316 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8317
8318 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8319 return -ERANGE;
8320
8321 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8322 if (!ret)
8323 rdev->crit_proto_nlportid = info->snd_portid;
8324
8325 return ret;
8326 }
8327
8328 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8329 struct genl_info *info)
8330 {
8331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8332 struct wireless_dev *wdev = info->user_ptr[1];
8333
8334 if (!rdev->ops->crit_proto_stop)
8335 return -EOPNOTSUPP;
8336
8337 if (rdev->crit_proto_nlportid) {
8338 rdev->crit_proto_nlportid = 0;
8339 rdev_crit_proto_stop(rdev, wdev);
8340 }
8341 return 0;
8342 }
8343
8344 #define NL80211_FLAG_NEED_WIPHY 0x01
8345 #define NL80211_FLAG_NEED_NETDEV 0x02
8346 #define NL80211_FLAG_NEED_RTNL 0x04
8347 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8348 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8349 NL80211_FLAG_CHECK_NETDEV_UP)
8350 #define NL80211_FLAG_NEED_WDEV 0x10
8351 /* If a netdev is associated, it must be UP, P2P must be started */
8352 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8353 NL80211_FLAG_CHECK_NETDEV_UP)
8354
8355 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8356 struct genl_info *info)
8357 {
8358 struct cfg80211_registered_device *rdev;
8359 struct wireless_dev *wdev;
8360 struct net_device *dev;
8361 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8362
8363 if (rtnl)
8364 rtnl_lock();
8365
8366 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8367 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8368 if (IS_ERR(rdev)) {
8369 if (rtnl)
8370 rtnl_unlock();
8371 return PTR_ERR(rdev);
8372 }
8373 info->user_ptr[0] = rdev;
8374 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8375 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8376 ASSERT_RTNL();
8377
8378 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8379 info->attrs);
8380 if (IS_ERR(wdev)) {
8381 if (rtnl)
8382 rtnl_unlock();
8383 return PTR_ERR(wdev);
8384 }
8385
8386 dev = wdev->netdev;
8387 rdev = wiphy_to_dev(wdev->wiphy);
8388
8389 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8390 if (!dev) {
8391 if (rtnl)
8392 rtnl_unlock();
8393 return -EINVAL;
8394 }
8395
8396 info->user_ptr[1] = dev;
8397 } else {
8398 info->user_ptr[1] = wdev;
8399 }
8400
8401 if (dev) {
8402 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8403 !netif_running(dev)) {
8404 if (rtnl)
8405 rtnl_unlock();
8406 return -ENETDOWN;
8407 }
8408
8409 dev_hold(dev);
8410 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8411 if (!wdev->p2p_started) {
8412 if (rtnl)
8413 rtnl_unlock();
8414 return -ENETDOWN;
8415 }
8416 }
8417
8418 info->user_ptr[0] = rdev;
8419 }
8420
8421 return 0;
8422 }
8423
8424 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8425 struct genl_info *info)
8426 {
8427 if (info->user_ptr[1]) {
8428 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8429 struct wireless_dev *wdev = info->user_ptr[1];
8430
8431 if (wdev->netdev)
8432 dev_put(wdev->netdev);
8433 } else {
8434 dev_put(info->user_ptr[1]);
8435 }
8436 }
8437 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8438 rtnl_unlock();
8439 }
8440
8441 static struct genl_ops nl80211_ops[] = {
8442 {
8443 .cmd = NL80211_CMD_GET_WIPHY,
8444 .doit = nl80211_get_wiphy,
8445 .dumpit = nl80211_dump_wiphy,
8446 .done = nl80211_dump_wiphy_done,
8447 .policy = nl80211_policy,
8448 /* can be retrieved by unprivileged users */
8449 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8450 NL80211_FLAG_NEED_RTNL,
8451 },
8452 {
8453 .cmd = NL80211_CMD_SET_WIPHY,
8454 .doit = nl80211_set_wiphy,
8455 .policy = nl80211_policy,
8456 .flags = GENL_ADMIN_PERM,
8457 .internal_flags = NL80211_FLAG_NEED_RTNL,
8458 },
8459 {
8460 .cmd = NL80211_CMD_GET_INTERFACE,
8461 .doit = nl80211_get_interface,
8462 .dumpit = nl80211_dump_interface,
8463 .policy = nl80211_policy,
8464 /* can be retrieved by unprivileged users */
8465 .internal_flags = NL80211_FLAG_NEED_WDEV |
8466 NL80211_FLAG_NEED_RTNL,
8467 },
8468 {
8469 .cmd = NL80211_CMD_SET_INTERFACE,
8470 .doit = nl80211_set_interface,
8471 .policy = nl80211_policy,
8472 .flags = GENL_ADMIN_PERM,
8473 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8474 NL80211_FLAG_NEED_RTNL,
8475 },
8476 {
8477 .cmd = NL80211_CMD_NEW_INTERFACE,
8478 .doit = nl80211_new_interface,
8479 .policy = nl80211_policy,
8480 .flags = GENL_ADMIN_PERM,
8481 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8482 NL80211_FLAG_NEED_RTNL,
8483 },
8484 {
8485 .cmd = NL80211_CMD_DEL_INTERFACE,
8486 .doit = nl80211_del_interface,
8487 .policy = nl80211_policy,
8488 .flags = GENL_ADMIN_PERM,
8489 .internal_flags = NL80211_FLAG_NEED_WDEV |
8490 NL80211_FLAG_NEED_RTNL,
8491 },
8492 {
8493 .cmd = NL80211_CMD_GET_KEY,
8494 .doit = nl80211_get_key,
8495 .policy = nl80211_policy,
8496 .flags = GENL_ADMIN_PERM,
8497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8498 NL80211_FLAG_NEED_RTNL,
8499 },
8500 {
8501 .cmd = NL80211_CMD_SET_KEY,
8502 .doit = nl80211_set_key,
8503 .policy = nl80211_policy,
8504 .flags = GENL_ADMIN_PERM,
8505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8506 NL80211_FLAG_NEED_RTNL,
8507 },
8508 {
8509 .cmd = NL80211_CMD_NEW_KEY,
8510 .doit = nl80211_new_key,
8511 .policy = nl80211_policy,
8512 .flags = GENL_ADMIN_PERM,
8513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8514 NL80211_FLAG_NEED_RTNL,
8515 },
8516 {
8517 .cmd = NL80211_CMD_DEL_KEY,
8518 .doit = nl80211_del_key,
8519 .policy = nl80211_policy,
8520 .flags = GENL_ADMIN_PERM,
8521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8522 NL80211_FLAG_NEED_RTNL,
8523 },
8524 {
8525 .cmd = NL80211_CMD_SET_BEACON,
8526 .policy = nl80211_policy,
8527 .flags = GENL_ADMIN_PERM,
8528 .doit = nl80211_set_beacon,
8529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8530 NL80211_FLAG_NEED_RTNL,
8531 },
8532 {
8533 .cmd = NL80211_CMD_START_AP,
8534 .policy = nl80211_policy,
8535 .flags = GENL_ADMIN_PERM,
8536 .doit = nl80211_start_ap,
8537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8538 NL80211_FLAG_NEED_RTNL,
8539 },
8540 {
8541 .cmd = NL80211_CMD_STOP_AP,
8542 .policy = nl80211_policy,
8543 .flags = GENL_ADMIN_PERM,
8544 .doit = nl80211_stop_ap,
8545 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8546 NL80211_FLAG_NEED_RTNL,
8547 },
8548 {
8549 .cmd = NL80211_CMD_GET_STATION,
8550 .doit = nl80211_get_station,
8551 .dumpit = nl80211_dump_station,
8552 .policy = nl80211_policy,
8553 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8554 NL80211_FLAG_NEED_RTNL,
8555 },
8556 {
8557 .cmd = NL80211_CMD_SET_STATION,
8558 .doit = nl80211_set_station,
8559 .policy = nl80211_policy,
8560 .flags = GENL_ADMIN_PERM,
8561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8562 NL80211_FLAG_NEED_RTNL,
8563 },
8564 {
8565 .cmd = NL80211_CMD_NEW_STATION,
8566 .doit = nl80211_new_station,
8567 .policy = nl80211_policy,
8568 .flags = GENL_ADMIN_PERM,
8569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8570 NL80211_FLAG_NEED_RTNL,
8571 },
8572 {
8573 .cmd = NL80211_CMD_DEL_STATION,
8574 .doit = nl80211_del_station,
8575 .policy = nl80211_policy,
8576 .flags = GENL_ADMIN_PERM,
8577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8578 NL80211_FLAG_NEED_RTNL,
8579 },
8580 {
8581 .cmd = NL80211_CMD_GET_MPATH,
8582 .doit = nl80211_get_mpath,
8583 .dumpit = nl80211_dump_mpath,
8584 .policy = nl80211_policy,
8585 .flags = GENL_ADMIN_PERM,
8586 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8587 NL80211_FLAG_NEED_RTNL,
8588 },
8589 {
8590 .cmd = NL80211_CMD_SET_MPATH,
8591 .doit = nl80211_set_mpath,
8592 .policy = nl80211_policy,
8593 .flags = GENL_ADMIN_PERM,
8594 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8595 NL80211_FLAG_NEED_RTNL,
8596 },
8597 {
8598 .cmd = NL80211_CMD_NEW_MPATH,
8599 .doit = nl80211_new_mpath,
8600 .policy = nl80211_policy,
8601 .flags = GENL_ADMIN_PERM,
8602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8603 NL80211_FLAG_NEED_RTNL,
8604 },
8605 {
8606 .cmd = NL80211_CMD_DEL_MPATH,
8607 .doit = nl80211_del_mpath,
8608 .policy = nl80211_policy,
8609 .flags = GENL_ADMIN_PERM,
8610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8611 NL80211_FLAG_NEED_RTNL,
8612 },
8613 {
8614 .cmd = NL80211_CMD_SET_BSS,
8615 .doit = nl80211_set_bss,
8616 .policy = nl80211_policy,
8617 .flags = GENL_ADMIN_PERM,
8618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8619 NL80211_FLAG_NEED_RTNL,
8620 },
8621 {
8622 .cmd = NL80211_CMD_GET_REG,
8623 .doit = nl80211_get_reg,
8624 .policy = nl80211_policy,
8625 .internal_flags = NL80211_FLAG_NEED_RTNL,
8626 /* can be retrieved by unprivileged users */
8627 },
8628 {
8629 .cmd = NL80211_CMD_SET_REG,
8630 .doit = nl80211_set_reg,
8631 .policy = nl80211_policy,
8632 .flags = GENL_ADMIN_PERM,
8633 .internal_flags = NL80211_FLAG_NEED_RTNL,
8634 },
8635 {
8636 .cmd = NL80211_CMD_REQ_SET_REG,
8637 .doit = nl80211_req_set_reg,
8638 .policy = nl80211_policy,
8639 .flags = GENL_ADMIN_PERM,
8640 },
8641 {
8642 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8643 .doit = nl80211_get_mesh_config,
8644 .policy = nl80211_policy,
8645 /* can be retrieved by unprivileged users */
8646 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8647 NL80211_FLAG_NEED_RTNL,
8648 },
8649 {
8650 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8651 .doit = nl80211_update_mesh_config,
8652 .policy = nl80211_policy,
8653 .flags = GENL_ADMIN_PERM,
8654 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8655 NL80211_FLAG_NEED_RTNL,
8656 },
8657 {
8658 .cmd = NL80211_CMD_TRIGGER_SCAN,
8659 .doit = nl80211_trigger_scan,
8660 .policy = nl80211_policy,
8661 .flags = GENL_ADMIN_PERM,
8662 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8663 NL80211_FLAG_NEED_RTNL,
8664 },
8665 {
8666 .cmd = NL80211_CMD_GET_SCAN,
8667 .policy = nl80211_policy,
8668 .dumpit = nl80211_dump_scan,
8669 },
8670 {
8671 .cmd = NL80211_CMD_START_SCHED_SCAN,
8672 .doit = nl80211_start_sched_scan,
8673 .policy = nl80211_policy,
8674 .flags = GENL_ADMIN_PERM,
8675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8676 NL80211_FLAG_NEED_RTNL,
8677 },
8678 {
8679 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8680 .doit = nl80211_stop_sched_scan,
8681 .policy = nl80211_policy,
8682 .flags = GENL_ADMIN_PERM,
8683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8684 NL80211_FLAG_NEED_RTNL,
8685 },
8686 {
8687 .cmd = NL80211_CMD_AUTHENTICATE,
8688 .doit = nl80211_authenticate,
8689 .policy = nl80211_policy,
8690 .flags = GENL_ADMIN_PERM,
8691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8692 NL80211_FLAG_NEED_RTNL,
8693 },
8694 {
8695 .cmd = NL80211_CMD_ASSOCIATE,
8696 .doit = nl80211_associate,
8697 .policy = nl80211_policy,
8698 .flags = GENL_ADMIN_PERM,
8699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8700 NL80211_FLAG_NEED_RTNL,
8701 },
8702 {
8703 .cmd = NL80211_CMD_DEAUTHENTICATE,
8704 .doit = nl80211_deauthenticate,
8705 .policy = nl80211_policy,
8706 .flags = GENL_ADMIN_PERM,
8707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8708 NL80211_FLAG_NEED_RTNL,
8709 },
8710 {
8711 .cmd = NL80211_CMD_DISASSOCIATE,
8712 .doit = nl80211_disassociate,
8713 .policy = nl80211_policy,
8714 .flags = GENL_ADMIN_PERM,
8715 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8716 NL80211_FLAG_NEED_RTNL,
8717 },
8718 {
8719 .cmd = NL80211_CMD_JOIN_IBSS,
8720 .doit = nl80211_join_ibss,
8721 .policy = nl80211_policy,
8722 .flags = GENL_ADMIN_PERM,
8723 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8724 NL80211_FLAG_NEED_RTNL,
8725 },
8726 {
8727 .cmd = NL80211_CMD_LEAVE_IBSS,
8728 .doit = nl80211_leave_ibss,
8729 .policy = nl80211_policy,
8730 .flags = GENL_ADMIN_PERM,
8731 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8732 NL80211_FLAG_NEED_RTNL,
8733 },
8734 #ifdef CONFIG_NL80211_TESTMODE
8735 {
8736 .cmd = NL80211_CMD_TESTMODE,
8737 .doit = nl80211_testmode_do,
8738 .dumpit = nl80211_testmode_dump,
8739 .policy = nl80211_policy,
8740 .flags = GENL_ADMIN_PERM,
8741 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8742 NL80211_FLAG_NEED_RTNL,
8743 },
8744 #endif
8745 {
8746 .cmd = NL80211_CMD_CONNECT,
8747 .doit = nl80211_connect,
8748 .policy = nl80211_policy,
8749 .flags = GENL_ADMIN_PERM,
8750 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8751 NL80211_FLAG_NEED_RTNL,
8752 },
8753 {
8754 .cmd = NL80211_CMD_DISCONNECT,
8755 .doit = nl80211_disconnect,
8756 .policy = nl80211_policy,
8757 .flags = GENL_ADMIN_PERM,
8758 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8759 NL80211_FLAG_NEED_RTNL,
8760 },
8761 {
8762 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8763 .doit = nl80211_wiphy_netns,
8764 .policy = nl80211_policy,
8765 .flags = GENL_ADMIN_PERM,
8766 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8767 NL80211_FLAG_NEED_RTNL,
8768 },
8769 {
8770 .cmd = NL80211_CMD_GET_SURVEY,
8771 .policy = nl80211_policy,
8772 .dumpit = nl80211_dump_survey,
8773 },
8774 {
8775 .cmd = NL80211_CMD_SET_PMKSA,
8776 .doit = nl80211_setdel_pmksa,
8777 .policy = nl80211_policy,
8778 .flags = GENL_ADMIN_PERM,
8779 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8780 NL80211_FLAG_NEED_RTNL,
8781 },
8782 {
8783 .cmd = NL80211_CMD_DEL_PMKSA,
8784 .doit = nl80211_setdel_pmksa,
8785 .policy = nl80211_policy,
8786 .flags = GENL_ADMIN_PERM,
8787 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8788 NL80211_FLAG_NEED_RTNL,
8789 },
8790 {
8791 .cmd = NL80211_CMD_FLUSH_PMKSA,
8792 .doit = nl80211_flush_pmksa,
8793 .policy = nl80211_policy,
8794 .flags = GENL_ADMIN_PERM,
8795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8796 NL80211_FLAG_NEED_RTNL,
8797 },
8798 {
8799 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8800 .doit = nl80211_remain_on_channel,
8801 .policy = nl80211_policy,
8802 .flags = GENL_ADMIN_PERM,
8803 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8804 NL80211_FLAG_NEED_RTNL,
8805 },
8806 {
8807 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8808 .doit = nl80211_cancel_remain_on_channel,
8809 .policy = nl80211_policy,
8810 .flags = GENL_ADMIN_PERM,
8811 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8812 NL80211_FLAG_NEED_RTNL,
8813 },
8814 {
8815 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8816 .doit = nl80211_set_tx_bitrate_mask,
8817 .policy = nl80211_policy,
8818 .flags = GENL_ADMIN_PERM,
8819 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8820 NL80211_FLAG_NEED_RTNL,
8821 },
8822 {
8823 .cmd = NL80211_CMD_REGISTER_FRAME,
8824 .doit = nl80211_register_mgmt,
8825 .policy = nl80211_policy,
8826 .flags = GENL_ADMIN_PERM,
8827 .internal_flags = NL80211_FLAG_NEED_WDEV |
8828 NL80211_FLAG_NEED_RTNL,
8829 },
8830 {
8831 .cmd = NL80211_CMD_FRAME,
8832 .doit = nl80211_tx_mgmt,
8833 .policy = nl80211_policy,
8834 .flags = GENL_ADMIN_PERM,
8835 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8836 NL80211_FLAG_NEED_RTNL,
8837 },
8838 {
8839 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8840 .doit = nl80211_tx_mgmt_cancel_wait,
8841 .policy = nl80211_policy,
8842 .flags = GENL_ADMIN_PERM,
8843 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8844 NL80211_FLAG_NEED_RTNL,
8845 },
8846 {
8847 .cmd = NL80211_CMD_SET_POWER_SAVE,
8848 .doit = nl80211_set_power_save,
8849 .policy = nl80211_policy,
8850 .flags = GENL_ADMIN_PERM,
8851 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8852 NL80211_FLAG_NEED_RTNL,
8853 },
8854 {
8855 .cmd = NL80211_CMD_GET_POWER_SAVE,
8856 .doit = nl80211_get_power_save,
8857 .policy = nl80211_policy,
8858 /* can be retrieved by unprivileged users */
8859 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8860 NL80211_FLAG_NEED_RTNL,
8861 },
8862 {
8863 .cmd = NL80211_CMD_SET_CQM,
8864 .doit = nl80211_set_cqm,
8865 .policy = nl80211_policy,
8866 .flags = GENL_ADMIN_PERM,
8867 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8868 NL80211_FLAG_NEED_RTNL,
8869 },
8870 {
8871 .cmd = NL80211_CMD_SET_CHANNEL,
8872 .doit = nl80211_set_channel,
8873 .policy = nl80211_policy,
8874 .flags = GENL_ADMIN_PERM,
8875 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8876 NL80211_FLAG_NEED_RTNL,
8877 },
8878 {
8879 .cmd = NL80211_CMD_SET_WDS_PEER,
8880 .doit = nl80211_set_wds_peer,
8881 .policy = nl80211_policy,
8882 .flags = GENL_ADMIN_PERM,
8883 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8884 NL80211_FLAG_NEED_RTNL,
8885 },
8886 {
8887 .cmd = NL80211_CMD_JOIN_MESH,
8888 .doit = nl80211_join_mesh,
8889 .policy = nl80211_policy,
8890 .flags = GENL_ADMIN_PERM,
8891 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8892 NL80211_FLAG_NEED_RTNL,
8893 },
8894 {
8895 .cmd = NL80211_CMD_LEAVE_MESH,
8896 .doit = nl80211_leave_mesh,
8897 .policy = nl80211_policy,
8898 .flags = GENL_ADMIN_PERM,
8899 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8900 NL80211_FLAG_NEED_RTNL,
8901 },
8902 #ifdef CONFIG_PM
8903 {
8904 .cmd = NL80211_CMD_GET_WOWLAN,
8905 .doit = nl80211_get_wowlan,
8906 .policy = nl80211_policy,
8907 /* can be retrieved by unprivileged users */
8908 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8909 NL80211_FLAG_NEED_RTNL,
8910 },
8911 {
8912 .cmd = NL80211_CMD_SET_WOWLAN,
8913 .doit = nl80211_set_wowlan,
8914 .policy = nl80211_policy,
8915 .flags = GENL_ADMIN_PERM,
8916 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8917 NL80211_FLAG_NEED_RTNL,
8918 },
8919 #endif
8920 {
8921 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8922 .doit = nl80211_set_rekey_data,
8923 .policy = nl80211_policy,
8924 .flags = GENL_ADMIN_PERM,
8925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8926 NL80211_FLAG_NEED_RTNL,
8927 },
8928 {
8929 .cmd = NL80211_CMD_TDLS_MGMT,
8930 .doit = nl80211_tdls_mgmt,
8931 .policy = nl80211_policy,
8932 .flags = GENL_ADMIN_PERM,
8933 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8934 NL80211_FLAG_NEED_RTNL,
8935 },
8936 {
8937 .cmd = NL80211_CMD_TDLS_OPER,
8938 .doit = nl80211_tdls_oper,
8939 .policy = nl80211_policy,
8940 .flags = GENL_ADMIN_PERM,
8941 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8942 NL80211_FLAG_NEED_RTNL,
8943 },
8944 {
8945 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8946 .doit = nl80211_register_unexpected_frame,
8947 .policy = nl80211_policy,
8948 .flags = GENL_ADMIN_PERM,
8949 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8950 NL80211_FLAG_NEED_RTNL,
8951 },
8952 {
8953 .cmd = NL80211_CMD_PROBE_CLIENT,
8954 .doit = nl80211_probe_client,
8955 .policy = nl80211_policy,
8956 .flags = GENL_ADMIN_PERM,
8957 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8958 NL80211_FLAG_NEED_RTNL,
8959 },
8960 {
8961 .cmd = NL80211_CMD_REGISTER_BEACONS,
8962 .doit = nl80211_register_beacons,
8963 .policy = nl80211_policy,
8964 .flags = GENL_ADMIN_PERM,
8965 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8966 NL80211_FLAG_NEED_RTNL,
8967 },
8968 {
8969 .cmd = NL80211_CMD_SET_NOACK_MAP,
8970 .doit = nl80211_set_noack_map,
8971 .policy = nl80211_policy,
8972 .flags = GENL_ADMIN_PERM,
8973 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8974 NL80211_FLAG_NEED_RTNL,
8975 },
8976 {
8977 .cmd = NL80211_CMD_START_P2P_DEVICE,
8978 .doit = nl80211_start_p2p_device,
8979 .policy = nl80211_policy,
8980 .flags = GENL_ADMIN_PERM,
8981 .internal_flags = NL80211_FLAG_NEED_WDEV |
8982 NL80211_FLAG_NEED_RTNL,
8983 },
8984 {
8985 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8986 .doit = nl80211_stop_p2p_device,
8987 .policy = nl80211_policy,
8988 .flags = GENL_ADMIN_PERM,
8989 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8990 NL80211_FLAG_NEED_RTNL,
8991 },
8992 {
8993 .cmd = NL80211_CMD_SET_MCAST_RATE,
8994 .doit = nl80211_set_mcast_rate,
8995 .policy = nl80211_policy,
8996 .flags = GENL_ADMIN_PERM,
8997 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8998 NL80211_FLAG_NEED_RTNL,
8999 },
9000 {
9001 .cmd = NL80211_CMD_SET_MAC_ACL,
9002 .doit = nl80211_set_mac_acl,
9003 .policy = nl80211_policy,
9004 .flags = GENL_ADMIN_PERM,
9005 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9006 NL80211_FLAG_NEED_RTNL,
9007 },
9008 {
9009 .cmd = NL80211_CMD_RADAR_DETECT,
9010 .doit = nl80211_start_radar_detection,
9011 .policy = nl80211_policy,
9012 .flags = GENL_ADMIN_PERM,
9013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9014 NL80211_FLAG_NEED_RTNL,
9015 },
9016 {
9017 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9018 .doit = nl80211_get_protocol_features,
9019 .policy = nl80211_policy,
9020 },
9021 {
9022 .cmd = NL80211_CMD_UPDATE_FT_IES,
9023 .doit = nl80211_update_ft_ies,
9024 .policy = nl80211_policy,
9025 .flags = GENL_ADMIN_PERM,
9026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9027 NL80211_FLAG_NEED_RTNL,
9028 },
9029 {
9030 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9031 .doit = nl80211_crit_protocol_start,
9032 .policy = nl80211_policy,
9033 .flags = GENL_ADMIN_PERM,
9034 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9035 NL80211_FLAG_NEED_RTNL,
9036 },
9037 {
9038 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9039 .doit = nl80211_crit_protocol_stop,
9040 .policy = nl80211_policy,
9041 .flags = GENL_ADMIN_PERM,
9042 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9043 NL80211_FLAG_NEED_RTNL,
9044 }
9045 };
9046
9047 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9048 .name = "mlme",
9049 };
9050
9051 /* multicast groups */
9052 static struct genl_multicast_group nl80211_config_mcgrp = {
9053 .name = "config",
9054 };
9055 static struct genl_multicast_group nl80211_scan_mcgrp = {
9056 .name = "scan",
9057 };
9058 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9059 .name = "regulatory",
9060 };
9061
9062 /* notification functions */
9063
9064 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9065 {
9066 struct sk_buff *msg;
9067 struct nl80211_dump_wiphy_state state = {};
9068
9069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9070 if (!msg)
9071 return;
9072
9073 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9074 nlmsg_free(msg);
9075 return;
9076 }
9077
9078 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9079 nl80211_config_mcgrp.id, GFP_KERNEL);
9080 }
9081
9082 static int nl80211_add_scan_req(struct sk_buff *msg,
9083 struct cfg80211_registered_device *rdev)
9084 {
9085 struct cfg80211_scan_request *req = rdev->scan_req;
9086 struct nlattr *nest;
9087 int i;
9088
9089 if (WARN_ON(!req))
9090 return 0;
9091
9092 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9093 if (!nest)
9094 goto nla_put_failure;
9095 for (i = 0; i < req->n_ssids; i++) {
9096 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9097 goto nla_put_failure;
9098 }
9099 nla_nest_end(msg, nest);
9100
9101 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9102 if (!nest)
9103 goto nla_put_failure;
9104 for (i = 0; i < req->n_channels; i++) {
9105 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9106 goto nla_put_failure;
9107 }
9108 nla_nest_end(msg, nest);
9109
9110 if (req->ie &&
9111 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9112 goto nla_put_failure;
9113
9114 if (req->flags)
9115 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9116
9117 return 0;
9118 nla_put_failure:
9119 return -ENOBUFS;
9120 }
9121
9122 static int nl80211_send_scan_msg(struct sk_buff *msg,
9123 struct cfg80211_registered_device *rdev,
9124 struct wireless_dev *wdev,
9125 u32 portid, u32 seq, int flags,
9126 u32 cmd)
9127 {
9128 void *hdr;
9129
9130 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9131 if (!hdr)
9132 return -1;
9133
9134 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9135 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9136 wdev->netdev->ifindex)) ||
9137 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9138 goto nla_put_failure;
9139
9140 /* ignore errors and send incomplete event anyway */
9141 nl80211_add_scan_req(msg, rdev);
9142
9143 return genlmsg_end(msg, hdr);
9144
9145 nla_put_failure:
9146 genlmsg_cancel(msg, hdr);
9147 return -EMSGSIZE;
9148 }
9149
9150 static int
9151 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9152 struct cfg80211_registered_device *rdev,
9153 struct net_device *netdev,
9154 u32 portid, u32 seq, int flags, u32 cmd)
9155 {
9156 void *hdr;
9157
9158 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9159 if (!hdr)
9160 return -1;
9161
9162 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9163 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9164 goto nla_put_failure;
9165
9166 return genlmsg_end(msg, hdr);
9167
9168 nla_put_failure:
9169 genlmsg_cancel(msg, hdr);
9170 return -EMSGSIZE;
9171 }
9172
9173 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9174 struct wireless_dev *wdev)
9175 {
9176 struct sk_buff *msg;
9177
9178 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9179 if (!msg)
9180 return;
9181
9182 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9183 NL80211_CMD_TRIGGER_SCAN) < 0) {
9184 nlmsg_free(msg);
9185 return;
9186 }
9187
9188 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9189 nl80211_scan_mcgrp.id, GFP_KERNEL);
9190 }
9191
9192 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9193 struct wireless_dev *wdev)
9194 {
9195 struct sk_buff *msg;
9196
9197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9198 if (!msg)
9199 return;
9200
9201 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9202 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9203 nlmsg_free(msg);
9204 return;
9205 }
9206
9207 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9208 nl80211_scan_mcgrp.id, GFP_KERNEL);
9209 }
9210
9211 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9212 struct wireless_dev *wdev)
9213 {
9214 struct sk_buff *msg;
9215
9216 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9217 if (!msg)
9218 return;
9219
9220 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9221 NL80211_CMD_SCAN_ABORTED) < 0) {
9222 nlmsg_free(msg);
9223 return;
9224 }
9225
9226 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9227 nl80211_scan_mcgrp.id, GFP_KERNEL);
9228 }
9229
9230 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9231 struct net_device *netdev)
9232 {
9233 struct sk_buff *msg;
9234
9235 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9236 if (!msg)
9237 return;
9238
9239 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9240 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9241 nlmsg_free(msg);
9242 return;
9243 }
9244
9245 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9246 nl80211_scan_mcgrp.id, GFP_KERNEL);
9247 }
9248
9249 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9250 struct net_device *netdev, u32 cmd)
9251 {
9252 struct sk_buff *msg;
9253
9254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9255 if (!msg)
9256 return;
9257
9258 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9259 nlmsg_free(msg);
9260 return;
9261 }
9262
9263 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9264 nl80211_scan_mcgrp.id, GFP_KERNEL);
9265 }
9266
9267 /*
9268 * This can happen on global regulatory changes or device specific settings
9269 * based on custom world regulatory domains.
9270 */
9271 void nl80211_send_reg_change_event(struct regulatory_request *request)
9272 {
9273 struct sk_buff *msg;
9274 void *hdr;
9275
9276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9277 if (!msg)
9278 return;
9279
9280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9281 if (!hdr) {
9282 nlmsg_free(msg);
9283 return;
9284 }
9285
9286 /* Userspace can always count this one always being set */
9287 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9288 goto nla_put_failure;
9289
9290 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9291 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9292 NL80211_REGDOM_TYPE_WORLD))
9293 goto nla_put_failure;
9294 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9295 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9296 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9297 goto nla_put_failure;
9298 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9299 request->intersect) {
9300 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9301 NL80211_REGDOM_TYPE_INTERSECTION))
9302 goto nla_put_failure;
9303 } else {
9304 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9305 NL80211_REGDOM_TYPE_COUNTRY) ||
9306 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9307 request->alpha2))
9308 goto nla_put_failure;
9309 }
9310
9311 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9312 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9313 goto nla_put_failure;
9314
9315 genlmsg_end(msg, hdr);
9316
9317 rcu_read_lock();
9318 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9319 GFP_ATOMIC);
9320 rcu_read_unlock();
9321
9322 return;
9323
9324 nla_put_failure:
9325 genlmsg_cancel(msg, hdr);
9326 nlmsg_free(msg);
9327 }
9328
9329 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9330 struct net_device *netdev,
9331 const u8 *buf, size_t len,
9332 enum nl80211_commands cmd, gfp_t gfp)
9333 {
9334 struct sk_buff *msg;
9335 void *hdr;
9336
9337 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9338 if (!msg)
9339 return;
9340
9341 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9342 if (!hdr) {
9343 nlmsg_free(msg);
9344 return;
9345 }
9346
9347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9348 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9349 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9350 goto nla_put_failure;
9351
9352 genlmsg_end(msg, hdr);
9353
9354 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9355 nl80211_mlme_mcgrp.id, gfp);
9356 return;
9357
9358 nla_put_failure:
9359 genlmsg_cancel(msg, hdr);
9360 nlmsg_free(msg);
9361 }
9362
9363 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9364 struct net_device *netdev, const u8 *buf,
9365 size_t len, gfp_t gfp)
9366 {
9367 nl80211_send_mlme_event(rdev, netdev, buf, len,
9368 NL80211_CMD_AUTHENTICATE, gfp);
9369 }
9370
9371 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9372 struct net_device *netdev, const u8 *buf,
9373 size_t len, gfp_t gfp)
9374 {
9375 nl80211_send_mlme_event(rdev, netdev, buf, len,
9376 NL80211_CMD_ASSOCIATE, gfp);
9377 }
9378
9379 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9380 struct net_device *netdev, const u8 *buf,
9381 size_t len, gfp_t gfp)
9382 {
9383 nl80211_send_mlme_event(rdev, netdev, buf, len,
9384 NL80211_CMD_DEAUTHENTICATE, gfp);
9385 }
9386
9387 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9388 struct net_device *netdev, const u8 *buf,
9389 size_t len, gfp_t gfp)
9390 {
9391 nl80211_send_mlme_event(rdev, netdev, buf, len,
9392 NL80211_CMD_DISASSOCIATE, gfp);
9393 }
9394
9395 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9396 size_t len)
9397 {
9398 struct wireless_dev *wdev = dev->ieee80211_ptr;
9399 struct wiphy *wiphy = wdev->wiphy;
9400 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9401 const struct ieee80211_mgmt *mgmt = (void *)buf;
9402 u32 cmd;
9403
9404 if (WARN_ON(len < 2))
9405 return;
9406
9407 if (ieee80211_is_deauth(mgmt->frame_control))
9408 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9409 else
9410 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9411
9412 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9413 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9414 }
9415 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9416
9417 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9418 struct net_device *netdev, int cmd,
9419 const u8 *addr, gfp_t gfp)
9420 {
9421 struct sk_buff *msg;
9422 void *hdr;
9423
9424 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9425 if (!msg)
9426 return;
9427
9428 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9429 if (!hdr) {
9430 nlmsg_free(msg);
9431 return;
9432 }
9433
9434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9435 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9436 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9437 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9438 goto nla_put_failure;
9439
9440 genlmsg_end(msg, hdr);
9441
9442 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9443 nl80211_mlme_mcgrp.id, gfp);
9444 return;
9445
9446 nla_put_failure:
9447 genlmsg_cancel(msg, hdr);
9448 nlmsg_free(msg);
9449 }
9450
9451 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9452 struct net_device *netdev, const u8 *addr,
9453 gfp_t gfp)
9454 {
9455 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9456 addr, gfp);
9457 }
9458
9459 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9460 struct net_device *netdev, const u8 *addr,
9461 gfp_t gfp)
9462 {
9463 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9464 addr, gfp);
9465 }
9466
9467 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9468 struct net_device *netdev, const u8 *bssid,
9469 const u8 *req_ie, size_t req_ie_len,
9470 const u8 *resp_ie, size_t resp_ie_len,
9471 u16 status, gfp_t gfp)
9472 {
9473 struct sk_buff *msg;
9474 void *hdr;
9475
9476 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9477 if (!msg)
9478 return;
9479
9480 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9481 if (!hdr) {
9482 nlmsg_free(msg);
9483 return;
9484 }
9485
9486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9487 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9488 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9489 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9490 (req_ie &&
9491 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9492 (resp_ie &&
9493 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9494 goto nla_put_failure;
9495
9496 genlmsg_end(msg, hdr);
9497
9498 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9499 nl80211_mlme_mcgrp.id, gfp);
9500 return;
9501
9502 nla_put_failure:
9503 genlmsg_cancel(msg, hdr);
9504 nlmsg_free(msg);
9505
9506 }
9507
9508 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9509 struct net_device *netdev, const u8 *bssid,
9510 const u8 *req_ie, size_t req_ie_len,
9511 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9512 {
9513 struct sk_buff *msg;
9514 void *hdr;
9515
9516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9517 if (!msg)
9518 return;
9519
9520 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9521 if (!hdr) {
9522 nlmsg_free(msg);
9523 return;
9524 }
9525
9526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9528 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9529 (req_ie &&
9530 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9531 (resp_ie &&
9532 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9533 goto nla_put_failure;
9534
9535 genlmsg_end(msg, hdr);
9536
9537 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9538 nl80211_mlme_mcgrp.id, gfp);
9539 return;
9540
9541 nla_put_failure:
9542 genlmsg_cancel(msg, hdr);
9543 nlmsg_free(msg);
9544
9545 }
9546
9547 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9548 struct net_device *netdev, u16 reason,
9549 const u8 *ie, size_t ie_len, bool from_ap)
9550 {
9551 struct sk_buff *msg;
9552 void *hdr;
9553
9554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9555 if (!msg)
9556 return;
9557
9558 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9559 if (!hdr) {
9560 nlmsg_free(msg);
9561 return;
9562 }
9563
9564 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9565 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9566 (from_ap && reason &&
9567 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9568 (from_ap &&
9569 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9570 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9571 goto nla_put_failure;
9572
9573 genlmsg_end(msg, hdr);
9574
9575 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9576 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9577 return;
9578
9579 nla_put_failure:
9580 genlmsg_cancel(msg, hdr);
9581 nlmsg_free(msg);
9582
9583 }
9584
9585 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9586 struct net_device *netdev, const u8 *bssid,
9587 gfp_t gfp)
9588 {
9589 struct sk_buff *msg;
9590 void *hdr;
9591
9592 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9593 if (!msg)
9594 return;
9595
9596 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9597 if (!hdr) {
9598 nlmsg_free(msg);
9599 return;
9600 }
9601
9602 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9603 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9604 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9605 goto nla_put_failure;
9606
9607 genlmsg_end(msg, hdr);
9608
9609 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9610 nl80211_mlme_mcgrp.id, gfp);
9611 return;
9612
9613 nla_put_failure:
9614 genlmsg_cancel(msg, hdr);
9615 nlmsg_free(msg);
9616 }
9617
9618 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9619 const u8* ie, u8 ie_len, gfp_t gfp)
9620 {
9621 struct wireless_dev *wdev = dev->ieee80211_ptr;
9622 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9623 struct sk_buff *msg;
9624 void *hdr;
9625
9626 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9627 return;
9628
9629 trace_cfg80211_notify_new_peer_candidate(dev, addr);
9630
9631 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9632 if (!msg)
9633 return;
9634
9635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9636 if (!hdr) {
9637 nlmsg_free(msg);
9638 return;
9639 }
9640
9641 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9642 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9643 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9644 (ie_len && ie &&
9645 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9646 goto nla_put_failure;
9647
9648 genlmsg_end(msg, hdr);
9649
9650 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9651 nl80211_mlme_mcgrp.id, gfp);
9652 return;
9653
9654 nla_put_failure:
9655 genlmsg_cancel(msg, hdr);
9656 nlmsg_free(msg);
9657 }
9658 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9659
9660 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9661 struct net_device *netdev, const u8 *addr,
9662 enum nl80211_key_type key_type, int key_id,
9663 const u8 *tsc, gfp_t gfp)
9664 {
9665 struct sk_buff *msg;
9666 void *hdr;
9667
9668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9669 if (!msg)
9670 return;
9671
9672 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9673 if (!hdr) {
9674 nlmsg_free(msg);
9675 return;
9676 }
9677
9678 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9679 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9680 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9681 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9682 (key_id != -1 &&
9683 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9684 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9685 goto nla_put_failure;
9686
9687 genlmsg_end(msg, hdr);
9688
9689 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9690 nl80211_mlme_mcgrp.id, gfp);
9691 return;
9692
9693 nla_put_failure:
9694 genlmsg_cancel(msg, hdr);
9695 nlmsg_free(msg);
9696 }
9697
9698 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9699 struct ieee80211_channel *channel_before,
9700 struct ieee80211_channel *channel_after)
9701 {
9702 struct sk_buff *msg;
9703 void *hdr;
9704 struct nlattr *nl_freq;
9705
9706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9707 if (!msg)
9708 return;
9709
9710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9711 if (!hdr) {
9712 nlmsg_free(msg);
9713 return;
9714 }
9715
9716 /*
9717 * Since we are applying the beacon hint to a wiphy we know its
9718 * wiphy_idx is valid
9719 */
9720 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9721 goto nla_put_failure;
9722
9723 /* Before */
9724 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9725 if (!nl_freq)
9726 goto nla_put_failure;
9727 if (nl80211_msg_put_channel(msg, channel_before, false))
9728 goto nla_put_failure;
9729 nla_nest_end(msg, nl_freq);
9730
9731 /* After */
9732 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9733 if (!nl_freq)
9734 goto nla_put_failure;
9735 if (nl80211_msg_put_channel(msg, channel_after, false))
9736 goto nla_put_failure;
9737 nla_nest_end(msg, nl_freq);
9738
9739 genlmsg_end(msg, hdr);
9740
9741 rcu_read_lock();
9742 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9743 GFP_ATOMIC);
9744 rcu_read_unlock();
9745
9746 return;
9747
9748 nla_put_failure:
9749 genlmsg_cancel(msg, hdr);
9750 nlmsg_free(msg);
9751 }
9752
9753 static void nl80211_send_remain_on_chan_event(
9754 int cmd, struct cfg80211_registered_device *rdev,
9755 struct wireless_dev *wdev, u64 cookie,
9756 struct ieee80211_channel *chan,
9757 unsigned int duration, gfp_t gfp)
9758 {
9759 struct sk_buff *msg;
9760 void *hdr;
9761
9762 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9763 if (!msg)
9764 return;
9765
9766 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9767 if (!hdr) {
9768 nlmsg_free(msg);
9769 return;
9770 }
9771
9772 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9773 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9774 wdev->netdev->ifindex)) ||
9775 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9776 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9777 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9778 NL80211_CHAN_NO_HT) ||
9779 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9780 goto nla_put_failure;
9781
9782 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9783 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9784 goto nla_put_failure;
9785
9786 genlmsg_end(msg, hdr);
9787
9788 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9789 nl80211_mlme_mcgrp.id, gfp);
9790 return;
9791
9792 nla_put_failure:
9793 genlmsg_cancel(msg, hdr);
9794 nlmsg_free(msg);
9795 }
9796
9797 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9798 struct ieee80211_channel *chan,
9799 unsigned int duration, gfp_t gfp)
9800 {
9801 struct wiphy *wiphy = wdev->wiphy;
9802 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9803
9804 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9805 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9806 rdev, wdev, cookie, chan,
9807 duration, gfp);
9808 }
9809 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9810
9811 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9812 struct ieee80211_channel *chan,
9813 gfp_t gfp)
9814 {
9815 struct wiphy *wiphy = wdev->wiphy;
9816 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9817
9818 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9819 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9820 rdev, wdev, cookie, chan, 0, gfp);
9821 }
9822 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9823
9824 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9825 struct station_info *sinfo, gfp_t gfp)
9826 {
9827 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9828 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9829 struct sk_buff *msg;
9830
9831 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9832
9833 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9834 if (!msg)
9835 return;
9836
9837 if (nl80211_send_station(msg, 0, 0, 0,
9838 rdev, dev, mac_addr, sinfo) < 0) {
9839 nlmsg_free(msg);
9840 return;
9841 }
9842
9843 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9844 nl80211_mlme_mcgrp.id, gfp);
9845 }
9846 EXPORT_SYMBOL(cfg80211_new_sta);
9847
9848 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9849 {
9850 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9851 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9852 struct sk_buff *msg;
9853 void *hdr;
9854
9855 trace_cfg80211_del_sta(dev, mac_addr);
9856
9857 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9858 if (!msg)
9859 return;
9860
9861 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9862 if (!hdr) {
9863 nlmsg_free(msg);
9864 return;
9865 }
9866
9867 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9868 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9869 goto nla_put_failure;
9870
9871 genlmsg_end(msg, hdr);
9872
9873 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9874 nl80211_mlme_mcgrp.id, gfp);
9875 return;
9876
9877 nla_put_failure:
9878 genlmsg_cancel(msg, hdr);
9879 nlmsg_free(msg);
9880 }
9881 EXPORT_SYMBOL(cfg80211_del_sta);
9882
9883 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9884 enum nl80211_connect_failed_reason reason,
9885 gfp_t gfp)
9886 {
9887 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9888 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9889 struct sk_buff *msg;
9890 void *hdr;
9891
9892 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9893 if (!msg)
9894 return;
9895
9896 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9897 if (!hdr) {
9898 nlmsg_free(msg);
9899 return;
9900 }
9901
9902 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9903 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9904 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9905 goto nla_put_failure;
9906
9907 genlmsg_end(msg, hdr);
9908
9909 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9910 nl80211_mlme_mcgrp.id, gfp);
9911 return;
9912
9913 nla_put_failure:
9914 genlmsg_cancel(msg, hdr);
9915 nlmsg_free(msg);
9916 }
9917 EXPORT_SYMBOL(cfg80211_conn_failed);
9918
9919 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9920 const u8 *addr, gfp_t gfp)
9921 {
9922 struct wireless_dev *wdev = dev->ieee80211_ptr;
9923 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9924 struct sk_buff *msg;
9925 void *hdr;
9926 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9927
9928 if (!nlportid)
9929 return false;
9930
9931 msg = nlmsg_new(100, gfp);
9932 if (!msg)
9933 return true;
9934
9935 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9936 if (!hdr) {
9937 nlmsg_free(msg);
9938 return true;
9939 }
9940
9941 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9942 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9943 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9944 goto nla_put_failure;
9945
9946 genlmsg_end(msg, hdr);
9947 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9948 return true;
9949
9950 nla_put_failure:
9951 genlmsg_cancel(msg, hdr);
9952 nlmsg_free(msg);
9953 return true;
9954 }
9955
9956 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9957 const u8 *addr, gfp_t gfp)
9958 {
9959 struct wireless_dev *wdev = dev->ieee80211_ptr;
9960 bool ret;
9961
9962 trace_cfg80211_rx_spurious_frame(dev, addr);
9963
9964 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9965 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9966 trace_cfg80211_return_bool(false);
9967 return false;
9968 }
9969 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9970 addr, gfp);
9971 trace_cfg80211_return_bool(ret);
9972 return ret;
9973 }
9974 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9975
9976 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9977 const u8 *addr, gfp_t gfp)
9978 {
9979 struct wireless_dev *wdev = dev->ieee80211_ptr;
9980 bool ret;
9981
9982 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9983
9984 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9985 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9986 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9987 trace_cfg80211_return_bool(false);
9988 return false;
9989 }
9990 ret = __nl80211_unexpected_frame(dev,
9991 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9992 addr, gfp);
9993 trace_cfg80211_return_bool(ret);
9994 return ret;
9995 }
9996 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9997
9998 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9999 struct wireless_dev *wdev, u32 nlportid,
10000 int freq, int sig_dbm,
10001 const u8 *buf, size_t len, gfp_t gfp)
10002 {
10003 struct net_device *netdev = wdev->netdev;
10004 struct sk_buff *msg;
10005 void *hdr;
10006
10007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10008 if (!msg)
10009 return -ENOMEM;
10010
10011 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10012 if (!hdr) {
10013 nlmsg_free(msg);
10014 return -ENOMEM;
10015 }
10016
10017 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10018 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10019 netdev->ifindex)) ||
10020 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10021 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10022 (sig_dbm &&
10023 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10024 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10025 goto nla_put_failure;
10026
10027 genlmsg_end(msg, hdr);
10028
10029 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10030
10031 nla_put_failure:
10032 genlmsg_cancel(msg, hdr);
10033 nlmsg_free(msg);
10034 return -ENOBUFS;
10035 }
10036
10037 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10038 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10039 {
10040 struct wiphy *wiphy = wdev->wiphy;
10041 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10042 struct net_device *netdev = wdev->netdev;
10043 struct sk_buff *msg;
10044 void *hdr;
10045
10046 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10047
10048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10049 if (!msg)
10050 return;
10051
10052 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10053 if (!hdr) {
10054 nlmsg_free(msg);
10055 return;
10056 }
10057
10058 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10059 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10060 netdev->ifindex)) ||
10061 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10062 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10063 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10064 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10065 goto nla_put_failure;
10066
10067 genlmsg_end(msg, hdr);
10068
10069 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10070 nl80211_mlme_mcgrp.id, gfp);
10071 return;
10072
10073 nla_put_failure:
10074 genlmsg_cancel(msg, hdr);
10075 nlmsg_free(msg);
10076 }
10077 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10078
10079 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10080 enum nl80211_cqm_rssi_threshold_event rssi_event,
10081 gfp_t gfp)
10082 {
10083 struct wireless_dev *wdev = dev->ieee80211_ptr;
10084 struct wiphy *wiphy = wdev->wiphy;
10085 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10086 struct sk_buff *msg;
10087 struct nlattr *pinfoattr;
10088 void *hdr;
10089
10090 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10091
10092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10093 if (!msg)
10094 return;
10095
10096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10097 if (!hdr) {
10098 nlmsg_free(msg);
10099 return;
10100 }
10101
10102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10103 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10104 goto nla_put_failure;
10105
10106 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10107 if (!pinfoattr)
10108 goto nla_put_failure;
10109
10110 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10111 rssi_event))
10112 goto nla_put_failure;
10113
10114 nla_nest_end(msg, pinfoattr);
10115
10116 genlmsg_end(msg, hdr);
10117
10118 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10119 nl80211_mlme_mcgrp.id, gfp);
10120 return;
10121
10122 nla_put_failure:
10123 genlmsg_cancel(msg, hdr);
10124 nlmsg_free(msg);
10125 }
10126 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10127
10128 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10129 struct net_device *netdev, const u8 *bssid,
10130 const u8 *replay_ctr, gfp_t gfp)
10131 {
10132 struct sk_buff *msg;
10133 struct nlattr *rekey_attr;
10134 void *hdr;
10135
10136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10137 if (!msg)
10138 return;
10139
10140 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10141 if (!hdr) {
10142 nlmsg_free(msg);
10143 return;
10144 }
10145
10146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10147 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10148 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10149 goto nla_put_failure;
10150
10151 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10152 if (!rekey_attr)
10153 goto nla_put_failure;
10154
10155 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10156 NL80211_REPLAY_CTR_LEN, replay_ctr))
10157 goto nla_put_failure;
10158
10159 nla_nest_end(msg, rekey_attr);
10160
10161 genlmsg_end(msg, hdr);
10162
10163 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10164 nl80211_mlme_mcgrp.id, gfp);
10165 return;
10166
10167 nla_put_failure:
10168 genlmsg_cancel(msg, hdr);
10169 nlmsg_free(msg);
10170 }
10171
10172 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10173 const u8 *replay_ctr, gfp_t gfp)
10174 {
10175 struct wireless_dev *wdev = dev->ieee80211_ptr;
10176 struct wiphy *wiphy = wdev->wiphy;
10177 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10178
10179 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10180 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10181 }
10182 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10183
10184 static void
10185 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10186 struct net_device *netdev, int index,
10187 const u8 *bssid, bool preauth, gfp_t gfp)
10188 {
10189 struct sk_buff *msg;
10190 struct nlattr *attr;
10191 void *hdr;
10192
10193 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10194 if (!msg)
10195 return;
10196
10197 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10198 if (!hdr) {
10199 nlmsg_free(msg);
10200 return;
10201 }
10202
10203 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10204 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10205 goto nla_put_failure;
10206
10207 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10208 if (!attr)
10209 goto nla_put_failure;
10210
10211 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10212 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10213 (preauth &&
10214 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10215 goto nla_put_failure;
10216
10217 nla_nest_end(msg, attr);
10218
10219 genlmsg_end(msg, hdr);
10220
10221 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10222 nl80211_mlme_mcgrp.id, gfp);
10223 return;
10224
10225 nla_put_failure:
10226 genlmsg_cancel(msg, hdr);
10227 nlmsg_free(msg);
10228 }
10229
10230 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10231 const u8 *bssid, bool preauth, gfp_t gfp)
10232 {
10233 struct wireless_dev *wdev = dev->ieee80211_ptr;
10234 struct wiphy *wiphy = wdev->wiphy;
10235 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10236
10237 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10238 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10239 }
10240 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10241
10242 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10243 struct net_device *netdev,
10244 struct cfg80211_chan_def *chandef,
10245 gfp_t gfp)
10246 {
10247 struct sk_buff *msg;
10248 void *hdr;
10249
10250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10251 if (!msg)
10252 return;
10253
10254 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10255 if (!hdr) {
10256 nlmsg_free(msg);
10257 return;
10258 }
10259
10260 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10261 goto nla_put_failure;
10262
10263 if (nl80211_send_chandef(msg, chandef))
10264 goto nla_put_failure;
10265
10266 genlmsg_end(msg, hdr);
10267
10268 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10269 nl80211_mlme_mcgrp.id, gfp);
10270 return;
10271
10272 nla_put_failure:
10273 genlmsg_cancel(msg, hdr);
10274 nlmsg_free(msg);
10275 }
10276
10277 void cfg80211_ch_switch_notify(struct net_device *dev,
10278 struct cfg80211_chan_def *chandef)
10279 {
10280 struct wireless_dev *wdev = dev->ieee80211_ptr;
10281 struct wiphy *wiphy = wdev->wiphy;
10282 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10283
10284 trace_cfg80211_ch_switch_notify(dev, chandef);
10285
10286 wdev_lock(wdev);
10287
10288 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10289 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10290 goto out;
10291
10292 wdev->channel = chandef->chan;
10293 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10294 out:
10295 wdev_unlock(wdev);
10296 return;
10297 }
10298 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10299
10300 void cfg80211_cqm_txe_notify(struct net_device *dev,
10301 const u8 *peer, u32 num_packets,
10302 u32 rate, u32 intvl, gfp_t gfp)
10303 {
10304 struct wireless_dev *wdev = dev->ieee80211_ptr;
10305 struct wiphy *wiphy = wdev->wiphy;
10306 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10307 struct sk_buff *msg;
10308 struct nlattr *pinfoattr;
10309 void *hdr;
10310
10311 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10312 if (!msg)
10313 return;
10314
10315 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10316 if (!hdr) {
10317 nlmsg_free(msg);
10318 return;
10319 }
10320
10321 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10322 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10323 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10324 goto nla_put_failure;
10325
10326 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10327 if (!pinfoattr)
10328 goto nla_put_failure;
10329
10330 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10331 goto nla_put_failure;
10332
10333 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10334 goto nla_put_failure;
10335
10336 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10337 goto nla_put_failure;
10338
10339 nla_nest_end(msg, pinfoattr);
10340
10341 genlmsg_end(msg, hdr);
10342
10343 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10344 nl80211_mlme_mcgrp.id, gfp);
10345 return;
10346
10347 nla_put_failure:
10348 genlmsg_cancel(msg, hdr);
10349 nlmsg_free(msg);
10350 }
10351 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10352
10353 void
10354 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10355 struct cfg80211_chan_def *chandef,
10356 enum nl80211_radar_event event,
10357 struct net_device *netdev, gfp_t gfp)
10358 {
10359 struct sk_buff *msg;
10360 void *hdr;
10361
10362 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10363 if (!msg)
10364 return;
10365
10366 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10367 if (!hdr) {
10368 nlmsg_free(msg);
10369 return;
10370 }
10371
10372 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10373 goto nla_put_failure;
10374
10375 /* NOP and radar events don't need a netdev parameter */
10376 if (netdev) {
10377 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10378
10379 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10380 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10381 goto nla_put_failure;
10382 }
10383
10384 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10385 goto nla_put_failure;
10386
10387 if (nl80211_send_chandef(msg, chandef))
10388 goto nla_put_failure;
10389
10390 genlmsg_end(msg, hdr);
10391
10392 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10393 nl80211_mlme_mcgrp.id, gfp);
10394 return;
10395
10396 nla_put_failure:
10397 genlmsg_cancel(msg, hdr);
10398 nlmsg_free(msg);
10399 }
10400
10401 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10402 const u8 *peer, u32 num_packets, gfp_t gfp)
10403 {
10404 struct wireless_dev *wdev = dev->ieee80211_ptr;
10405 struct wiphy *wiphy = wdev->wiphy;
10406 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10407 struct sk_buff *msg;
10408 struct nlattr *pinfoattr;
10409 void *hdr;
10410
10411 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10412
10413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10414 if (!msg)
10415 return;
10416
10417 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10418 if (!hdr) {
10419 nlmsg_free(msg);
10420 return;
10421 }
10422
10423 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10424 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10425 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10426 goto nla_put_failure;
10427
10428 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10429 if (!pinfoattr)
10430 goto nla_put_failure;
10431
10432 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10433 goto nla_put_failure;
10434
10435 nla_nest_end(msg, pinfoattr);
10436
10437 genlmsg_end(msg, hdr);
10438
10439 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10440 nl80211_mlme_mcgrp.id, gfp);
10441 return;
10442
10443 nla_put_failure:
10444 genlmsg_cancel(msg, hdr);
10445 nlmsg_free(msg);
10446 }
10447 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10448
10449 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10450 u64 cookie, bool acked, gfp_t gfp)
10451 {
10452 struct wireless_dev *wdev = dev->ieee80211_ptr;
10453 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10454 struct sk_buff *msg;
10455 void *hdr;
10456
10457 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10458
10459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10460
10461 if (!msg)
10462 return;
10463
10464 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10465 if (!hdr) {
10466 nlmsg_free(msg);
10467 return;
10468 }
10469
10470 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10472 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10473 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10474 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10475 goto nla_put_failure;
10476
10477 genlmsg_end(msg, hdr);
10478
10479 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10480 nl80211_mlme_mcgrp.id, gfp);
10481 return;
10482
10483 nla_put_failure:
10484 genlmsg_cancel(msg, hdr);
10485 nlmsg_free(msg);
10486 }
10487 EXPORT_SYMBOL(cfg80211_probe_status);
10488
10489 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10490 const u8 *frame, size_t len,
10491 int freq, int sig_dbm)
10492 {
10493 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10494 struct sk_buff *msg;
10495 void *hdr;
10496 struct cfg80211_beacon_registration *reg;
10497
10498 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10499
10500 spin_lock_bh(&rdev->beacon_registrations_lock);
10501 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10502 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10503 if (!msg) {
10504 spin_unlock_bh(&rdev->beacon_registrations_lock);
10505 return;
10506 }
10507
10508 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10509 if (!hdr)
10510 goto nla_put_failure;
10511
10512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10513 (freq &&
10514 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10515 (sig_dbm &&
10516 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10517 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10518 goto nla_put_failure;
10519
10520 genlmsg_end(msg, hdr);
10521
10522 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10523 }
10524 spin_unlock_bh(&rdev->beacon_registrations_lock);
10525 return;
10526
10527 nla_put_failure:
10528 spin_unlock_bh(&rdev->beacon_registrations_lock);
10529 if (hdr)
10530 genlmsg_cancel(msg, hdr);
10531 nlmsg_free(msg);
10532 }
10533 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10534
10535 #ifdef CONFIG_PM
10536 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10537 struct cfg80211_wowlan_wakeup *wakeup,
10538 gfp_t gfp)
10539 {
10540 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10541 struct sk_buff *msg;
10542 void *hdr;
10543 int size = 200;
10544
10545 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10546
10547 if (wakeup)
10548 size += wakeup->packet_present_len;
10549
10550 msg = nlmsg_new(size, gfp);
10551 if (!msg)
10552 return;
10553
10554 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10555 if (!hdr)
10556 goto free_msg;
10557
10558 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10559 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10560 goto free_msg;
10561
10562 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10563 wdev->netdev->ifindex))
10564 goto free_msg;
10565
10566 if (wakeup) {
10567 struct nlattr *reasons;
10568
10569 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10570
10571 if (wakeup->disconnect &&
10572 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10573 goto free_msg;
10574 if (wakeup->magic_pkt &&
10575 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10576 goto free_msg;
10577 if (wakeup->gtk_rekey_failure &&
10578 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10579 goto free_msg;
10580 if (wakeup->eap_identity_req &&
10581 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10582 goto free_msg;
10583 if (wakeup->four_way_handshake &&
10584 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10585 goto free_msg;
10586 if (wakeup->rfkill_release &&
10587 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10588 goto free_msg;
10589
10590 if (wakeup->pattern_idx >= 0 &&
10591 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10592 wakeup->pattern_idx))
10593 goto free_msg;
10594
10595 if (wakeup->tcp_match)
10596 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10597
10598 if (wakeup->tcp_connlost)
10599 nla_put_flag(msg,
10600 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10601
10602 if (wakeup->tcp_nomoretokens)
10603 nla_put_flag(msg,
10604 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10605
10606 if (wakeup->packet) {
10607 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10608 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10609
10610 if (!wakeup->packet_80211) {
10611 pkt_attr =
10612 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10613 len_attr =
10614 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10615 }
10616
10617 if (wakeup->packet_len &&
10618 nla_put_u32(msg, len_attr, wakeup->packet_len))
10619 goto free_msg;
10620
10621 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10622 wakeup->packet))
10623 goto free_msg;
10624 }
10625
10626 nla_nest_end(msg, reasons);
10627 }
10628
10629 genlmsg_end(msg, hdr);
10630
10631 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10632 nl80211_mlme_mcgrp.id, gfp);
10633 return;
10634
10635 free_msg:
10636 nlmsg_free(msg);
10637 }
10638 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10639 #endif
10640
10641 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10642 enum nl80211_tdls_operation oper,
10643 u16 reason_code, gfp_t gfp)
10644 {
10645 struct wireless_dev *wdev = dev->ieee80211_ptr;
10646 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10647 struct sk_buff *msg;
10648 void *hdr;
10649
10650 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10651 reason_code);
10652
10653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10654 if (!msg)
10655 return;
10656
10657 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10658 if (!hdr) {
10659 nlmsg_free(msg);
10660 return;
10661 }
10662
10663 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10664 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10665 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10666 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10667 (reason_code > 0 &&
10668 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10669 goto nla_put_failure;
10670
10671 genlmsg_end(msg, hdr);
10672
10673 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10674 nl80211_mlme_mcgrp.id, gfp);
10675 return;
10676
10677 nla_put_failure:
10678 genlmsg_cancel(msg, hdr);
10679 nlmsg_free(msg);
10680 }
10681 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10682
10683 static int nl80211_netlink_notify(struct notifier_block * nb,
10684 unsigned long state,
10685 void *_notify)
10686 {
10687 struct netlink_notify *notify = _notify;
10688 struct cfg80211_registered_device *rdev;
10689 struct wireless_dev *wdev;
10690 struct cfg80211_beacon_registration *reg, *tmp;
10691
10692 if (state != NETLINK_URELEASE)
10693 return NOTIFY_DONE;
10694
10695 rcu_read_lock();
10696
10697 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10698 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10699 cfg80211_mlme_unregister_socket(wdev, notify->portid);
10700
10701 spin_lock_bh(&rdev->beacon_registrations_lock);
10702 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10703 list) {
10704 if (reg->nlportid == notify->portid) {
10705 list_del(&reg->list);
10706 kfree(reg);
10707 break;
10708 }
10709 }
10710 spin_unlock_bh(&rdev->beacon_registrations_lock);
10711 }
10712
10713 rcu_read_unlock();
10714
10715 return NOTIFY_DONE;
10716 }
10717
10718 static struct notifier_block nl80211_netlink_notifier = {
10719 .notifier_call = nl80211_netlink_notify,
10720 };
10721
10722 void cfg80211_ft_event(struct net_device *netdev,
10723 struct cfg80211_ft_event_params *ft_event)
10724 {
10725 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10726 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10727 struct sk_buff *msg;
10728 void *hdr;
10729
10730 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10731
10732 if (!ft_event->target_ap)
10733 return;
10734
10735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10736 if (!msg)
10737 return;
10738
10739 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10740 if (!hdr) {
10741 nlmsg_free(msg);
10742 return;
10743 }
10744
10745 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10746 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10747 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10748 if (ft_event->ies)
10749 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10750 if (ft_event->ric_ies)
10751 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10752 ft_event->ric_ies);
10753
10754 genlmsg_end(msg, hdr);
10755
10756 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10757 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10758 }
10759 EXPORT_SYMBOL(cfg80211_ft_event);
10760
10761 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10762 {
10763 struct cfg80211_registered_device *rdev;
10764 struct sk_buff *msg;
10765 void *hdr;
10766 u32 nlportid;
10767
10768 rdev = wiphy_to_dev(wdev->wiphy);
10769 if (!rdev->crit_proto_nlportid)
10770 return;
10771
10772 nlportid = rdev->crit_proto_nlportid;
10773 rdev->crit_proto_nlportid = 0;
10774
10775 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10776 if (!msg)
10777 return;
10778
10779 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10780 if (!hdr)
10781 goto nla_put_failure;
10782
10783 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10784 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10785 goto nla_put_failure;
10786
10787 genlmsg_end(msg, hdr);
10788
10789 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10790 return;
10791
10792 nla_put_failure:
10793 if (hdr)
10794 genlmsg_cancel(msg, hdr);
10795 nlmsg_free(msg);
10796
10797 }
10798 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10799
10800 /* initialisation/exit functions */
10801
10802 int nl80211_init(void)
10803 {
10804 int err;
10805
10806 err = genl_register_family_with_ops(&nl80211_fam,
10807 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10808 if (err)
10809 return err;
10810
10811 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10812 if (err)
10813 goto err_out;
10814
10815 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10816 if (err)
10817 goto err_out;
10818
10819 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10820 if (err)
10821 goto err_out;
10822
10823 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10824 if (err)
10825 goto err_out;
10826
10827 #ifdef CONFIG_NL80211_TESTMODE
10828 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10829 if (err)
10830 goto err_out;
10831 #endif
10832
10833 err = netlink_register_notifier(&nl80211_netlink_notifier);
10834 if (err)
10835 goto err_out;
10836
10837 return 0;
10838 err_out:
10839 genl_unregister_family(&nl80211_fam);
10840 return err;
10841 }
10842
10843 void nl80211_exit(void)
10844 {
10845 netlink_unregister_notifier(&nl80211_netlink_notifier);
10846 genl_unregister_family(&nl80211_fam);
10847 }
Linus' kernel tree