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selinux: remove 'flags' parameter from avc_audit()
[linux-2.6.git] / net / wireless / nl80211.c
blobaf8d84a4a5b2a05fab2de732722e6535c8e699d0
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 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
353 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
354 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
355 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
356 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
357 };
358
359 /* policy for the key attributes */
360 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
361 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
362 [NL80211_KEY_IDX] = { .type = NLA_U8 },
363 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
364 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
365 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
366 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
367 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
368 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
369 };
370
371 /* policy for the key default flags */
372 static const struct nla_policy
373 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
374 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
375 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
376 };
377
378 /* policy for WoWLAN attributes */
379 static const struct nla_policy
380 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
381 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
382 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
383 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
384 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
385 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
386 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
387 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
388 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
389 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
390 };
391
392 static const struct nla_policy
393 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
394 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
395 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
396 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
397 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
398 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
399 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
400 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
401 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
402 },
403 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
404 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
405 },
406 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
407 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
408 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
409 };
410
411 /* policy for coalesce rule attributes */
412 static const struct nla_policy
413 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
414 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
415 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
416 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
417 };
418
419 /* policy for GTK rekey offload attributes */
420 static const struct nla_policy
421 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
422 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
423 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
424 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
425 };
426
427 static const struct nla_policy
428 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
429 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
430 .len = IEEE80211_MAX_SSID_LEN },
431 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
432 };
433
434 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
435 struct netlink_callback *cb,
436 struct cfg80211_registered_device **rdev,
437 struct wireless_dev **wdev)
438 {
439 int err;
440
441 rtnl_lock();
442
443 if (!cb->args[0]) {
444 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
445 nl80211_fam.attrbuf, nl80211_fam.maxattr,
446 nl80211_policy);
447 if (err)
448 goto out_unlock;
449
450 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
451 nl80211_fam.attrbuf);
452 if (IS_ERR(*wdev)) {
453 err = PTR_ERR(*wdev);
454 goto out_unlock;
455 }
456 *rdev = wiphy_to_dev((*wdev)->wiphy);
457 /* 0 is the first index - add 1 to parse only once */
458 cb->args[0] = (*rdev)->wiphy_idx + 1;
459 cb->args[1] = (*wdev)->identifier;
460 } else {
461 /* subtract the 1 again here */
462 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
463 struct wireless_dev *tmp;
464
465 if (!wiphy) {
466 err = -ENODEV;
467 goto out_unlock;
468 }
469 *rdev = wiphy_to_dev(wiphy);
470 *wdev = NULL;
471
472 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
473 if (tmp->identifier == cb->args[1]) {
474 *wdev = tmp;
475 break;
476 }
477 }
478
479 if (!*wdev) {
480 err = -ENODEV;
481 goto out_unlock;
482 }
483 }
484
485 return 0;
486 out_unlock:
487 rtnl_unlock();
488 return err;
489 }
490
491 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
492 {
493 rtnl_unlock();
494 }
495
496 /* IE validation */
497 static bool is_valid_ie_attr(const struct nlattr *attr)
498 {
499 const u8 *pos;
500 int len;
501
502 if (!attr)
503 return true;
504
505 pos = nla_data(attr);
506 len = nla_len(attr);
507
508 while (len) {
509 u8 elemlen;
510
511 if (len < 2)
512 return false;
513 len -= 2;
514
515 elemlen = pos[1];
516 if (elemlen > len)
517 return false;
518
519 len -= elemlen;
520 pos += 2 + elemlen;
521 }
522
523 return true;
524 }
525
526 /* message building helper */
527 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
528 int flags, u8 cmd)
529 {
530 /* since there is no private header just add the generic one */
531 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
532 }
533
534 static int nl80211_msg_put_channel(struct sk_buff *msg,
535 struct ieee80211_channel *chan,
536 bool large)
537 {
538 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
539 chan->center_freq))
540 goto nla_put_failure;
541
542 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
543 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
544 goto nla_put_failure;
545 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
546 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
547 goto nla_put_failure;
548 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
549 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
550 goto nla_put_failure;
551 if (chan->flags & IEEE80211_CHAN_RADAR) {
552 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
553 goto nla_put_failure;
554 if (large) {
555 u32 time;
556
557 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
558
559 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
560 chan->dfs_state))
561 goto nla_put_failure;
562 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
563 time))
564 goto nla_put_failure;
565 }
566 }
567
568 if (large) {
569 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
570 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
571 goto nla_put_failure;
572 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
574 goto nla_put_failure;
575 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
577 goto nla_put_failure;
578 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
580 goto nla_put_failure;
581 }
582
583 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
584 DBM_TO_MBM(chan->max_power)))
585 goto nla_put_failure;
586
587 return 0;
588
589 nla_put_failure:
590 return -ENOBUFS;
591 }
592
593 /* netlink command implementations */
594
595 struct key_parse {
596 struct key_params p;
597 int idx;
598 int type;
599 bool def, defmgmt;
600 bool def_uni, def_multi;
601 };
602
603 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
604 {
605 struct nlattr *tb[NL80211_KEY_MAX + 1];
606 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
607 nl80211_key_policy);
608 if (err)
609 return err;
610
611 k->def = !!tb[NL80211_KEY_DEFAULT];
612 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
613
614 if (k->def) {
615 k->def_uni = true;
616 k->def_multi = true;
617 }
618 if (k->defmgmt)
619 k->def_multi = true;
620
621 if (tb[NL80211_KEY_IDX])
622 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
623
624 if (tb[NL80211_KEY_DATA]) {
625 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
626 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
627 }
628
629 if (tb[NL80211_KEY_SEQ]) {
630 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
631 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
632 }
633
634 if (tb[NL80211_KEY_CIPHER])
635 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
636
637 if (tb[NL80211_KEY_TYPE]) {
638 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
639 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
640 return -EINVAL;
641 }
642
643 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
644 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
645 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
646 tb[NL80211_KEY_DEFAULT_TYPES],
647 nl80211_key_default_policy);
648 if (err)
649 return err;
650
651 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
652 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
653 }
654
655 return 0;
656 }
657
658 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
659 {
660 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
661 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
662 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
663 }
664
665 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
666 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
667 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
668 }
669
670 if (info->attrs[NL80211_ATTR_KEY_IDX])
671 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
672
673 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
674 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
675
676 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
677 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
678
679 if (k->def) {
680 k->def_uni = true;
681 k->def_multi = true;
682 }
683 if (k->defmgmt)
684 k->def_multi = true;
685
686 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
687 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
688 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
689 return -EINVAL;
690 }
691
692 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
693 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
694 int err = nla_parse_nested(
695 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
696 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
697 nl80211_key_default_policy);
698 if (err)
699 return err;
700
701 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
702 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
703 }
704
705 return 0;
706 }
707
708 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
709 {
710 int err;
711
712 memset(k, 0, sizeof(*k));
713 k->idx = -1;
714 k->type = -1;
715
716 if (info->attrs[NL80211_ATTR_KEY])
717 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
718 else
719 err = nl80211_parse_key_old(info, k);
720
721 if (err)
722 return err;
723
724 if (k->def && k->defmgmt)
725 return -EINVAL;
726
727 if (k->defmgmt) {
728 if (k->def_uni || !k->def_multi)
729 return -EINVAL;
730 }
731
732 if (k->idx != -1) {
733 if (k->defmgmt) {
734 if (k->idx < 4 || k->idx > 5)
735 return -EINVAL;
736 } else if (k->def) {
737 if (k->idx < 0 || k->idx > 3)
738 return -EINVAL;
739 } else {
740 if (k->idx < 0 || k->idx > 5)
741 return -EINVAL;
742 }
743 }
744
745 return 0;
746 }
747
748 static struct cfg80211_cached_keys *
749 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
750 struct nlattr *keys, bool *no_ht)
751 {
752 struct key_parse parse;
753 struct nlattr *key;
754 struct cfg80211_cached_keys *result;
755 int rem, err, def = 0;
756
757 result = kzalloc(sizeof(*result), GFP_KERNEL);
758 if (!result)
759 return ERR_PTR(-ENOMEM);
760
761 result->def = -1;
762 result->defmgmt = -1;
763
764 nla_for_each_nested(key, keys, rem) {
765 memset(&parse, 0, sizeof(parse));
766 parse.idx = -1;
767
768 err = nl80211_parse_key_new(key, &parse);
769 if (err)
770 goto error;
771 err = -EINVAL;
772 if (!parse.p.key)
773 goto error;
774 if (parse.idx < 0 || parse.idx > 4)
775 goto error;
776 if (parse.def) {
777 if (def)
778 goto error;
779 def = 1;
780 result->def = parse.idx;
781 if (!parse.def_uni || !parse.def_multi)
782 goto error;
783 } else if (parse.defmgmt)
784 goto error;
785 err = cfg80211_validate_key_settings(rdev, &parse.p,
786 parse.idx, false, NULL);
787 if (err)
788 goto error;
789 result->params[parse.idx].cipher = parse.p.cipher;
790 result->params[parse.idx].key_len = parse.p.key_len;
791 result->params[parse.idx].key = result->data[parse.idx];
792 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
793
794 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
795 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
796 if (no_ht)
797 *no_ht = true;
798 }
799 }
800
801 return result;
802 error:
803 kfree(result);
804 return ERR_PTR(err);
805 }
806
807 static int nl80211_key_allowed(struct wireless_dev *wdev)
808 {
809 ASSERT_WDEV_LOCK(wdev);
810
811 switch (wdev->iftype) {
812 case NL80211_IFTYPE_AP:
813 case NL80211_IFTYPE_AP_VLAN:
814 case NL80211_IFTYPE_P2P_GO:
815 case NL80211_IFTYPE_MESH_POINT:
816 break;
817 case NL80211_IFTYPE_ADHOC:
818 case NL80211_IFTYPE_STATION:
819 case NL80211_IFTYPE_P2P_CLIENT:
820 if (!wdev->current_bss)
821 return -ENOLINK;
822 break;
823 default:
824 return -EINVAL;
825 }
826
827 return 0;
828 }
829
830 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
831 {
832 struct nlattr *nl_modes = nla_nest_start(msg, attr);
833 int i;
834
835 if (!nl_modes)
836 goto nla_put_failure;
837
838 i = 0;
839 while (ifmodes) {
840 if ((ifmodes & 1) && nla_put_flag(msg, i))
841 goto nla_put_failure;
842 ifmodes >>= 1;
843 i++;
844 }
845
846 nla_nest_end(msg, nl_modes);
847 return 0;
848
849 nla_put_failure:
850 return -ENOBUFS;
851 }
852
853 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
854 struct sk_buff *msg,
855 bool large)
856 {
857 struct nlattr *nl_combis;
858 int i, j;
859
860 nl_combis = nla_nest_start(msg,
861 NL80211_ATTR_INTERFACE_COMBINATIONS);
862 if (!nl_combis)
863 goto nla_put_failure;
864
865 for (i = 0; i < wiphy->n_iface_combinations; i++) {
866 const struct ieee80211_iface_combination *c;
867 struct nlattr *nl_combi, *nl_limits;
868
869 c = &wiphy->iface_combinations[i];
870
871 nl_combi = nla_nest_start(msg, i + 1);
872 if (!nl_combi)
873 goto nla_put_failure;
874
875 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
876 if (!nl_limits)
877 goto nla_put_failure;
878
879 for (j = 0; j < c->n_limits; j++) {
880 struct nlattr *nl_limit;
881
882 nl_limit = nla_nest_start(msg, j + 1);
883 if (!nl_limit)
884 goto nla_put_failure;
885 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
886 c->limits[j].max))
887 goto nla_put_failure;
888 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
889 c->limits[j].types))
890 goto nla_put_failure;
891 nla_nest_end(msg, nl_limit);
892 }
893
894 nla_nest_end(msg, nl_limits);
895
896 if (c->beacon_int_infra_match &&
897 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
898 goto nla_put_failure;
899 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
900 c->num_different_channels) ||
901 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
902 c->max_interfaces))
903 goto nla_put_failure;
904 if (large &&
905 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
906 c->radar_detect_widths))
907 goto nla_put_failure;
908
909 nla_nest_end(msg, nl_combi);
910 }
911
912 nla_nest_end(msg, nl_combis);
913
914 return 0;
915 nla_put_failure:
916 return -ENOBUFS;
917 }
918
919 #ifdef CONFIG_PM
920 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
921 struct sk_buff *msg)
922 {
923 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
924 struct nlattr *nl_tcp;
925
926 if (!tcp)
927 return 0;
928
929 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
930 if (!nl_tcp)
931 return -ENOBUFS;
932
933 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
934 tcp->data_payload_max))
935 return -ENOBUFS;
936
937 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
938 tcp->data_payload_max))
939 return -ENOBUFS;
940
941 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
942 return -ENOBUFS;
943
944 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
945 sizeof(*tcp->tok), tcp->tok))
946 return -ENOBUFS;
947
948 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
949 tcp->data_interval_max))
950 return -ENOBUFS;
951
952 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
953 tcp->wake_payload_max))
954 return -ENOBUFS;
955
956 nla_nest_end(msg, nl_tcp);
957 return 0;
958 }
959
960 static int nl80211_send_wowlan(struct sk_buff *msg,
961 struct cfg80211_registered_device *dev,
962 bool large)
963 {
964 struct nlattr *nl_wowlan;
965
966 if (!dev->wiphy.wowlan)
967 return 0;
968
969 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
970 if (!nl_wowlan)
971 return -ENOBUFS;
972
973 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
974 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
975 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
976 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
977 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
978 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
979 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
980 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
981 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
982 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
983 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
984 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
985 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
986 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
987 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
988 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
989 return -ENOBUFS;
990
991 if (dev->wiphy.wowlan->n_patterns) {
992 struct nl80211_pattern_support pat = {
993 .max_patterns = dev->wiphy.wowlan->n_patterns,
994 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
995 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
996 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
997 };
998
999 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1000 sizeof(pat), &pat))
1001 return -ENOBUFS;
1002 }
1003
1004 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1005 return -ENOBUFS;
1006
1007 nla_nest_end(msg, nl_wowlan);
1008
1009 return 0;
1010 }
1011 #endif
1012
1013 static int nl80211_send_coalesce(struct sk_buff *msg,
1014 struct cfg80211_registered_device *dev)
1015 {
1016 struct nl80211_coalesce_rule_support rule;
1017
1018 if (!dev->wiphy.coalesce)
1019 return 0;
1020
1021 rule.max_rules = dev->wiphy.coalesce->n_rules;
1022 rule.max_delay = dev->wiphy.coalesce->max_delay;
1023 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1024 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1025 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1026 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1027
1028 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1029 return -ENOBUFS;
1030
1031 return 0;
1032 }
1033
1034 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1035 struct ieee80211_supported_band *sband)
1036 {
1037 struct nlattr *nl_rates, *nl_rate;
1038 struct ieee80211_rate *rate;
1039 int i;
1040
1041 /* add HT info */
1042 if (sband->ht_cap.ht_supported &&
1043 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1044 sizeof(sband->ht_cap.mcs),
1045 &sband->ht_cap.mcs) ||
1046 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1047 sband->ht_cap.cap) ||
1048 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1049 sband->ht_cap.ampdu_factor) ||
1050 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1051 sband->ht_cap.ampdu_density)))
1052 return -ENOBUFS;
1053
1054 /* add VHT info */
1055 if (sband->vht_cap.vht_supported &&
1056 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1057 sizeof(sband->vht_cap.vht_mcs),
1058 &sband->vht_cap.vht_mcs) ||
1059 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1060 sband->vht_cap.cap)))
1061 return -ENOBUFS;
1062
1063 /* add bitrates */
1064 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1065 if (!nl_rates)
1066 return -ENOBUFS;
1067
1068 for (i = 0; i < sband->n_bitrates; i++) {
1069 nl_rate = nla_nest_start(msg, i);
1070 if (!nl_rate)
1071 return -ENOBUFS;
1072
1073 rate = &sband->bitrates[i];
1074 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1075 rate->bitrate))
1076 return -ENOBUFS;
1077 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1078 nla_put_flag(msg,
1079 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1080 return -ENOBUFS;
1081
1082 nla_nest_end(msg, nl_rate);
1083 }
1084
1085 nla_nest_end(msg, nl_rates);
1086
1087 return 0;
1088 }
1089
1090 static int
1091 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1092 const struct ieee80211_txrx_stypes *mgmt_stypes)
1093 {
1094 u16 stypes;
1095 struct nlattr *nl_ftypes, *nl_ifs;
1096 enum nl80211_iftype ift;
1097 int i;
1098
1099 if (!mgmt_stypes)
1100 return 0;
1101
1102 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1103 if (!nl_ifs)
1104 return -ENOBUFS;
1105
1106 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1107 nl_ftypes = nla_nest_start(msg, ift);
1108 if (!nl_ftypes)
1109 return -ENOBUFS;
1110 i = 0;
1111 stypes = mgmt_stypes[ift].tx;
1112 while (stypes) {
1113 if ((stypes & 1) &&
1114 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1115 (i << 4) | IEEE80211_FTYPE_MGMT))
1116 return -ENOBUFS;
1117 stypes >>= 1;
1118 i++;
1119 }
1120 nla_nest_end(msg, nl_ftypes);
1121 }
1122
1123 nla_nest_end(msg, nl_ifs);
1124
1125 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1126 if (!nl_ifs)
1127 return -ENOBUFS;
1128
1129 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1130 nl_ftypes = nla_nest_start(msg, ift);
1131 if (!nl_ftypes)
1132 return -ENOBUFS;
1133 i = 0;
1134 stypes = mgmt_stypes[ift].rx;
1135 while (stypes) {
1136 if ((stypes & 1) &&
1137 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1138 (i << 4) | IEEE80211_FTYPE_MGMT))
1139 return -ENOBUFS;
1140 stypes >>= 1;
1141 i++;
1142 }
1143 nla_nest_end(msg, nl_ftypes);
1144 }
1145 nla_nest_end(msg, nl_ifs);
1146
1147 return 0;
1148 }
1149
1150 struct nl80211_dump_wiphy_state {
1151 s64 filter_wiphy;
1152 long start;
1153 long split_start, band_start, chan_start;
1154 bool split;
1155 };
1156
1157 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1158 struct sk_buff *msg, u32 portid, u32 seq,
1159 int flags, struct nl80211_dump_wiphy_state *state)
1160 {
1161 void *hdr;
1162 struct nlattr *nl_bands, *nl_band;
1163 struct nlattr *nl_freqs, *nl_freq;
1164 struct nlattr *nl_cmds;
1165 enum ieee80211_band band;
1166 struct ieee80211_channel *chan;
1167 int i;
1168 const struct ieee80211_txrx_stypes *mgmt_stypes =
1169 dev->wiphy.mgmt_stypes;
1170 u32 features;
1171
1172 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1173 if (!hdr)
1174 return -ENOBUFS;
1175
1176 if (WARN_ON(!state))
1177 return -EINVAL;
1178
1179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1180 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1181 wiphy_name(&dev->wiphy)) ||
1182 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1183 cfg80211_rdev_list_generation))
1184 goto nla_put_failure;
1185
1186 switch (state->split_start) {
1187 case 0:
1188 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1189 dev->wiphy.retry_short) ||
1190 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1191 dev->wiphy.retry_long) ||
1192 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1193 dev->wiphy.frag_threshold) ||
1194 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1195 dev->wiphy.rts_threshold) ||
1196 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1197 dev->wiphy.coverage_class) ||
1198 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1199 dev->wiphy.max_scan_ssids) ||
1200 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1201 dev->wiphy.max_sched_scan_ssids) ||
1202 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1203 dev->wiphy.max_scan_ie_len) ||
1204 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1205 dev->wiphy.max_sched_scan_ie_len) ||
1206 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1207 dev->wiphy.max_match_sets))
1208 goto nla_put_failure;
1209
1210 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1211 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1212 goto nla_put_failure;
1213 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1215 goto nla_put_failure;
1216 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1218 goto nla_put_failure;
1219 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1220 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1221 goto nla_put_failure;
1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1223 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1224 goto nla_put_failure;
1225 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1226 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1227 goto nla_put_failure;
1228 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1229 nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1230 goto nla_put_failure;
1231
1232 state->split_start++;
1233 if (state->split)
1234 break;
1235 case 1:
1236 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1237 sizeof(u32) * dev->wiphy.n_cipher_suites,
1238 dev->wiphy.cipher_suites))
1239 goto nla_put_failure;
1240
1241 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1242 dev->wiphy.max_num_pmkids))
1243 goto nla_put_failure;
1244
1245 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1246 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1247 goto nla_put_failure;
1248
1249 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1250 dev->wiphy.available_antennas_tx) ||
1251 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1252 dev->wiphy.available_antennas_rx))
1253 goto nla_put_failure;
1254
1255 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1256 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1257 dev->wiphy.probe_resp_offload))
1258 goto nla_put_failure;
1259
1260 if ((dev->wiphy.available_antennas_tx ||
1261 dev->wiphy.available_antennas_rx) &&
1262 dev->ops->get_antenna) {
1263 u32 tx_ant = 0, rx_ant = 0;
1264 int res;
1265 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1266 if (!res) {
1267 if (nla_put_u32(msg,
1268 NL80211_ATTR_WIPHY_ANTENNA_TX,
1269 tx_ant) ||
1270 nla_put_u32(msg,
1271 NL80211_ATTR_WIPHY_ANTENNA_RX,
1272 rx_ant))
1273 goto nla_put_failure;
1274 }
1275 }
1276
1277 state->split_start++;
1278 if (state->split)
1279 break;
1280 case 2:
1281 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1282 dev->wiphy.interface_modes))
1283 goto nla_put_failure;
1284 state->split_start++;
1285 if (state->split)
1286 break;
1287 case 3:
1288 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1289 if (!nl_bands)
1290 goto nla_put_failure;
1291
1292 for (band = state->band_start;
1293 band < IEEE80211_NUM_BANDS; band++) {
1294 struct ieee80211_supported_band *sband;
1295
1296 sband = dev->wiphy.bands[band];
1297
1298 if (!sband)
1299 continue;
1300
1301 nl_band = nla_nest_start(msg, band);
1302 if (!nl_band)
1303 goto nla_put_failure;
1304
1305 switch (state->chan_start) {
1306 case 0:
1307 if (nl80211_send_band_rateinfo(msg, sband))
1308 goto nla_put_failure;
1309 state->chan_start++;
1310 if (state->split)
1311 break;
1312 default:
1313 /* add frequencies */
1314 nl_freqs = nla_nest_start(
1315 msg, NL80211_BAND_ATTR_FREQS);
1316 if (!nl_freqs)
1317 goto nla_put_failure;
1318
1319 for (i = state->chan_start - 1;
1320 i < sband->n_channels;
1321 i++) {
1322 nl_freq = nla_nest_start(msg, i);
1323 if (!nl_freq)
1324 goto nla_put_failure;
1325
1326 chan = &sband->channels[i];
1327
1328 if (nl80211_msg_put_channel(
1329 msg, chan,
1330 state->split))
1331 goto nla_put_failure;
1332
1333 nla_nest_end(msg, nl_freq);
1334 if (state->split)
1335 break;
1336 }
1337 if (i < sband->n_channels)
1338 state->chan_start = i + 2;
1339 else
1340 state->chan_start = 0;
1341 nla_nest_end(msg, nl_freqs);
1342 }
1343
1344 nla_nest_end(msg, nl_band);
1345
1346 if (state->split) {
1347 /* start again here */
1348 if (state->chan_start)
1349 band--;
1350 break;
1351 }
1352 }
1353 nla_nest_end(msg, nl_bands);
1354
1355 if (band < IEEE80211_NUM_BANDS)
1356 state->band_start = band + 1;
1357 else
1358 state->band_start = 0;
1359
1360 /* if bands & channels are done, continue outside */
1361 if (state->band_start == 0 && state->chan_start == 0)
1362 state->split_start++;
1363 if (state->split)
1364 break;
1365 case 4:
1366 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1367 if (!nl_cmds)
1368 goto nla_put_failure;
1369
1370 i = 0;
1371 #define CMD(op, n) \
1372 do { \
1373 if (dev->ops->op) { \
1374 i++; \
1375 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1376 goto nla_put_failure; \
1377 } \
1378 } while (0)
1379
1380 CMD(add_virtual_intf, NEW_INTERFACE);
1381 CMD(change_virtual_intf, SET_INTERFACE);
1382 CMD(add_key, NEW_KEY);
1383 CMD(start_ap, START_AP);
1384 CMD(add_station, NEW_STATION);
1385 CMD(add_mpath, NEW_MPATH);
1386 CMD(update_mesh_config, SET_MESH_CONFIG);
1387 CMD(change_bss, SET_BSS);
1388 CMD(auth, AUTHENTICATE);
1389 CMD(assoc, ASSOCIATE);
1390 CMD(deauth, DEAUTHENTICATE);
1391 CMD(disassoc, DISASSOCIATE);
1392 CMD(join_ibss, JOIN_IBSS);
1393 CMD(join_mesh, JOIN_MESH);
1394 CMD(set_pmksa, SET_PMKSA);
1395 CMD(del_pmksa, DEL_PMKSA);
1396 CMD(flush_pmksa, FLUSH_PMKSA);
1397 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1398 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1399 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1400 CMD(mgmt_tx, FRAME);
1401 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1402 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1403 i++;
1404 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1405 goto nla_put_failure;
1406 }
1407 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1408 dev->ops->join_mesh) {
1409 i++;
1410 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1411 goto nla_put_failure;
1412 }
1413 CMD(set_wds_peer, SET_WDS_PEER);
1414 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1415 CMD(tdls_mgmt, TDLS_MGMT);
1416 CMD(tdls_oper, TDLS_OPER);
1417 }
1418 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1419 CMD(sched_scan_start, START_SCHED_SCAN);
1420 CMD(probe_client, PROBE_CLIENT);
1421 CMD(set_noack_map, SET_NOACK_MAP);
1422 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1423 i++;
1424 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1425 goto nla_put_failure;
1426 }
1427 CMD(start_p2p_device, START_P2P_DEVICE);
1428 CMD(set_mcast_rate, SET_MCAST_RATE);
1429 if (state->split) {
1430 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1431 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1432 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1433 CMD(channel_switch, CHANNEL_SWITCH);
1434 }
1435
1436 #ifdef CONFIG_NL80211_TESTMODE
1437 CMD(testmode_cmd, TESTMODE);
1438 #endif
1439
1440 #undef CMD
1441
1442 if (dev->ops->connect || dev->ops->auth) {
1443 i++;
1444 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1445 goto nla_put_failure;
1446 }
1447
1448 if (dev->ops->disconnect || dev->ops->deauth) {
1449 i++;
1450 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1451 goto nla_put_failure;
1452 }
1453
1454 nla_nest_end(msg, nl_cmds);
1455 state->split_start++;
1456 if (state->split)
1457 break;
1458 case 5:
1459 if (dev->ops->remain_on_channel &&
1460 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1461 nla_put_u32(msg,
1462 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1463 dev->wiphy.max_remain_on_channel_duration))
1464 goto nla_put_failure;
1465
1466 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1467 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1468 goto nla_put_failure;
1469
1470 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1471 goto nla_put_failure;
1472 state->split_start++;
1473 if (state->split)
1474 break;
1475 case 6:
1476 #ifdef CONFIG_PM
1477 if (nl80211_send_wowlan(msg, dev, state->split))
1478 goto nla_put_failure;
1479 state->split_start++;
1480 if (state->split)
1481 break;
1482 #else
1483 state->split_start++;
1484 #endif
1485 case 7:
1486 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1487 dev->wiphy.software_iftypes))
1488 goto nla_put_failure;
1489
1490 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1491 state->split))
1492 goto nla_put_failure;
1493
1494 state->split_start++;
1495 if (state->split)
1496 break;
1497 case 8:
1498 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1499 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1500 dev->wiphy.ap_sme_capa))
1501 goto nla_put_failure;
1502
1503 features = dev->wiphy.features;
1504 /*
1505 * We can only add the per-channel limit information if the
1506 * dump is split, otherwise it makes it too big. Therefore
1507 * only advertise it in that case.
1508 */
1509 if (state->split)
1510 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1511 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1512 goto nla_put_failure;
1513
1514 if (dev->wiphy.ht_capa_mod_mask &&
1515 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1516 sizeof(*dev->wiphy.ht_capa_mod_mask),
1517 dev->wiphy.ht_capa_mod_mask))
1518 goto nla_put_failure;
1519
1520 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1521 dev->wiphy.max_acl_mac_addrs &&
1522 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1523 dev->wiphy.max_acl_mac_addrs))
1524 goto nla_put_failure;
1525
1526 /*
1527 * Any information below this point is only available to
1528 * applications that can deal with it being split. This
1529 * helps ensure that newly added capabilities don't break
1530 * older tools by overrunning their buffers.
1531 *
1532 * We still increment split_start so that in the split
1533 * case we'll continue with more data in the next round,
1534 * but break unconditionally so unsplit data stops here.
1535 */
1536 state->split_start++;
1537 break;
1538 case 9:
1539 if (dev->wiphy.extended_capabilities &&
1540 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1541 dev->wiphy.extended_capabilities_len,
1542 dev->wiphy.extended_capabilities) ||
1543 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1544 dev->wiphy.extended_capabilities_len,
1545 dev->wiphy.extended_capabilities_mask)))
1546 goto nla_put_failure;
1547
1548 if (dev->wiphy.vht_capa_mod_mask &&
1549 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1550 sizeof(*dev->wiphy.vht_capa_mod_mask),
1551 dev->wiphy.vht_capa_mod_mask))
1552 goto nla_put_failure;
1553
1554 state->split_start++;
1555 break;
1556 case 10:
1557 if (nl80211_send_coalesce(msg, dev))
1558 goto nla_put_failure;
1559
1560 /* done */
1561 state->split_start = 0;
1562 break;
1563 }
1564 return genlmsg_end(msg, hdr);
1565
1566 nla_put_failure:
1567 genlmsg_cancel(msg, hdr);
1568 return -EMSGSIZE;
1569 }
1570
1571 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1572 struct netlink_callback *cb,
1573 struct nl80211_dump_wiphy_state *state)
1574 {
1575 struct nlattr **tb = nl80211_fam.attrbuf;
1576 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1577 tb, nl80211_fam.maxattr, nl80211_policy);
1578 /* ignore parse errors for backward compatibility */
1579 if (ret)
1580 return 0;
1581
1582 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1583 if (tb[NL80211_ATTR_WIPHY])
1584 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1585 if (tb[NL80211_ATTR_WDEV])
1586 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1587 if (tb[NL80211_ATTR_IFINDEX]) {
1588 struct net_device *netdev;
1589 struct cfg80211_registered_device *rdev;
1590 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1591
1592 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1593 if (!netdev)
1594 return -ENODEV;
1595 if (netdev->ieee80211_ptr) {
1596 rdev = wiphy_to_dev(
1597 netdev->ieee80211_ptr->wiphy);
1598 state->filter_wiphy = rdev->wiphy_idx;
1599 }
1600 dev_put(netdev);
1601 }
1602
1603 return 0;
1604 }
1605
1606 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1607 {
1608 int idx = 0, ret;
1609 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1610 struct cfg80211_registered_device *dev;
1611
1612 rtnl_lock();
1613 if (!state) {
1614 state = kzalloc(sizeof(*state), GFP_KERNEL);
1615 if (!state) {
1616 rtnl_unlock();
1617 return -ENOMEM;
1618 }
1619 state->filter_wiphy = -1;
1620 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1621 if (ret) {
1622 kfree(state);
1623 rtnl_unlock();
1624 return ret;
1625 }
1626 cb->args[0] = (long)state;
1627 }
1628
1629 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1630 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1631 continue;
1632 if (++idx <= state->start)
1633 continue;
1634 if (state->filter_wiphy != -1 &&
1635 state->filter_wiphy != dev->wiphy_idx)
1636 continue;
1637 /* attempt to fit multiple wiphy data chunks into the skb */
1638 do {
1639 ret = nl80211_send_wiphy(dev, skb,
1640 NETLINK_CB(cb->skb).portid,
1641 cb->nlh->nlmsg_seq,
1642 NLM_F_MULTI, state);
1643 if (ret < 0) {
1644 /*
1645 * If sending the wiphy data didn't fit (ENOBUFS
1646 * or EMSGSIZE returned), this SKB is still
1647 * empty (so it's not too big because another
1648 * wiphy dataset is already in the skb) and
1649 * we've not tried to adjust the dump allocation
1650 * yet ... then adjust the alloc size to be
1651 * bigger, and return 1 but with the empty skb.
1652 * This results in an empty message being RX'ed
1653 * in userspace, but that is ignored.
1654 *
1655 * We can then retry with the larger buffer.
1656 */
1657 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1658 !skb->len &&
1659 cb->min_dump_alloc < 4096) {
1660 cb->min_dump_alloc = 4096;
1661 rtnl_unlock();
1662 return 1;
1663 }
1664 idx--;
1665 break;
1666 }
1667 } while (state->split_start > 0);
1668 break;
1669 }
1670 rtnl_unlock();
1671
1672 state->start = idx;
1673
1674 return skb->len;
1675 }
1676
1677 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1678 {
1679 kfree((void *)cb->args[0]);
1680 return 0;
1681 }
1682
1683 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1684 {
1685 struct sk_buff *msg;
1686 struct cfg80211_registered_device *dev = info->user_ptr[0];
1687 struct nl80211_dump_wiphy_state state = {};
1688
1689 msg = nlmsg_new(4096, GFP_KERNEL);
1690 if (!msg)
1691 return -ENOMEM;
1692
1693 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1694 &state) < 0) {
1695 nlmsg_free(msg);
1696 return -ENOBUFS;
1697 }
1698
1699 return genlmsg_reply(msg, info);
1700 }
1701
1702 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1703 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1704 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1705 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1706 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1707 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1708 };
1709
1710 static int parse_txq_params(struct nlattr *tb[],
1711 struct ieee80211_txq_params *txq_params)
1712 {
1713 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1714 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1715 !tb[NL80211_TXQ_ATTR_AIFS])
1716 return -EINVAL;
1717
1718 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1719 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1720 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1721 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1722 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1723
1724 if (txq_params->ac >= NL80211_NUM_ACS)
1725 return -EINVAL;
1726
1727 return 0;
1728 }
1729
1730 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1731 {
1732 /*
1733 * You can only set the channel explicitly for WDS interfaces,
1734 * all others have their channel managed via their respective
1735 * "establish a connection" command (connect, join, ...)
1736 *
1737 * For AP/GO and mesh mode, the channel can be set with the
1738 * channel userspace API, but is only stored and passed to the
1739 * low-level driver when the AP starts or the mesh is joined.
1740 * This is for backward compatibility, userspace can also give
1741 * the channel in the start-ap or join-mesh commands instead.
1742 *
1743 * Monitors are special as they are normally slaved to
1744 * whatever else is going on, so they have their own special
1745 * operation to set the monitor channel if possible.
1746 */
1747 return !wdev ||
1748 wdev->iftype == NL80211_IFTYPE_AP ||
1749 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1750 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1751 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1752 }
1753
1754 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1755 struct genl_info *info,
1756 struct cfg80211_chan_def *chandef)
1757 {
1758 u32 control_freq;
1759
1760 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1761 return -EINVAL;
1762
1763 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1764
1765 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1766 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1767 chandef->center_freq1 = control_freq;
1768 chandef->center_freq2 = 0;
1769
1770 /* Primary channel not allowed */
1771 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1772 return -EINVAL;
1773
1774 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1775 enum nl80211_channel_type chantype;
1776
1777 chantype = nla_get_u32(
1778 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1779
1780 switch (chantype) {
1781 case NL80211_CHAN_NO_HT:
1782 case NL80211_CHAN_HT20:
1783 case NL80211_CHAN_HT40PLUS:
1784 case NL80211_CHAN_HT40MINUS:
1785 cfg80211_chandef_create(chandef, chandef->chan,
1786 chantype);
1787 break;
1788 default:
1789 return -EINVAL;
1790 }
1791 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1792 chandef->width =
1793 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1794 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1795 chandef->center_freq1 =
1796 nla_get_u32(
1797 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1798 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1799 chandef->center_freq2 =
1800 nla_get_u32(
1801 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1802 }
1803
1804 if (!cfg80211_chandef_valid(chandef))
1805 return -EINVAL;
1806
1807 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1808 IEEE80211_CHAN_DISABLED))
1809 return -EINVAL;
1810
1811 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1812 chandef->width == NL80211_CHAN_WIDTH_10) &&
1813 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1814 return -EINVAL;
1815
1816 return 0;
1817 }
1818
1819 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1820 struct wireless_dev *wdev,
1821 struct genl_info *info)
1822 {
1823 struct cfg80211_chan_def chandef;
1824 int result;
1825 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1826
1827 if (wdev)
1828 iftype = wdev->iftype;
1829
1830 if (!nl80211_can_set_dev_channel(wdev))
1831 return -EOPNOTSUPP;
1832
1833 result = nl80211_parse_chandef(rdev, info, &chandef);
1834 if (result)
1835 return result;
1836
1837 switch (iftype) {
1838 case NL80211_IFTYPE_AP:
1839 case NL80211_IFTYPE_P2P_GO:
1840 if (wdev->beacon_interval) {
1841 result = -EBUSY;
1842 break;
1843 }
1844 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1845 result = -EINVAL;
1846 break;
1847 }
1848 wdev->preset_chandef = chandef;
1849 result = 0;
1850 break;
1851 case NL80211_IFTYPE_MESH_POINT:
1852 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1853 break;
1854 case NL80211_IFTYPE_MONITOR:
1855 result = cfg80211_set_monitor_channel(rdev, &chandef);
1856 break;
1857 default:
1858 result = -EINVAL;
1859 }
1860
1861 return result;
1862 }
1863
1864 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1865 {
1866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1867 struct net_device *netdev = info->user_ptr[1];
1868
1869 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1870 }
1871
1872 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1873 {
1874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1875 struct net_device *dev = info->user_ptr[1];
1876 struct wireless_dev *wdev = dev->ieee80211_ptr;
1877 const u8 *bssid;
1878
1879 if (!info->attrs[NL80211_ATTR_MAC])
1880 return -EINVAL;
1881
1882 if (netif_running(dev))
1883 return -EBUSY;
1884
1885 if (!rdev->ops->set_wds_peer)
1886 return -EOPNOTSUPP;
1887
1888 if (wdev->iftype != NL80211_IFTYPE_WDS)
1889 return -EOPNOTSUPP;
1890
1891 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1892 return rdev_set_wds_peer(rdev, dev, bssid);
1893 }
1894
1895
1896 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1897 {
1898 struct cfg80211_registered_device *rdev;
1899 struct net_device *netdev = NULL;
1900 struct wireless_dev *wdev;
1901 int result = 0, rem_txq_params = 0;
1902 struct nlattr *nl_txq_params;
1903 u32 changed;
1904 u8 retry_short = 0, retry_long = 0;
1905 u32 frag_threshold = 0, rts_threshold = 0;
1906 u8 coverage_class = 0;
1907
1908 ASSERT_RTNL();
1909
1910 /*
1911 * Try to find the wiphy and netdev. Normally this
1912 * function shouldn't need the netdev, but this is
1913 * done for backward compatibility -- previously
1914 * setting the channel was done per wiphy, but now
1915 * it is per netdev. Previous userland like hostapd
1916 * also passed a netdev to set_wiphy, so that it is
1917 * possible to let that go to the right netdev!
1918 */
1919
1920 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1921 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1922
1923 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1924 if (netdev && netdev->ieee80211_ptr)
1925 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1926 else
1927 netdev = NULL;
1928 }
1929
1930 if (!netdev) {
1931 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1932 info->attrs);
1933 if (IS_ERR(rdev))
1934 return PTR_ERR(rdev);
1935 wdev = NULL;
1936 netdev = NULL;
1937 result = 0;
1938 } else
1939 wdev = netdev->ieee80211_ptr;
1940
1941 /*
1942 * end workaround code, by now the rdev is available
1943 * and locked, and wdev may or may not be NULL.
1944 */
1945
1946 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1947 result = cfg80211_dev_rename(
1948 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1949
1950 if (result)
1951 goto bad_res;
1952
1953 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1954 struct ieee80211_txq_params txq_params;
1955 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1956
1957 if (!rdev->ops->set_txq_params) {
1958 result = -EOPNOTSUPP;
1959 goto bad_res;
1960 }
1961
1962 if (!netdev) {
1963 result = -EINVAL;
1964 goto bad_res;
1965 }
1966
1967 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1968 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1969 result = -EINVAL;
1970 goto bad_res;
1971 }
1972
1973 if (!netif_running(netdev)) {
1974 result = -ENETDOWN;
1975 goto bad_res;
1976 }
1977
1978 nla_for_each_nested(nl_txq_params,
1979 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1980 rem_txq_params) {
1981 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1982 nla_data(nl_txq_params),
1983 nla_len(nl_txq_params),
1984 txq_params_policy);
1985 result = parse_txq_params(tb, &txq_params);
1986 if (result)
1987 goto bad_res;
1988
1989 result = rdev_set_txq_params(rdev, netdev,
1990 &txq_params);
1991 if (result)
1992 goto bad_res;
1993 }
1994 }
1995
1996 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1997 result = __nl80211_set_channel(rdev,
1998 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1999 info);
2000 if (result)
2001 goto bad_res;
2002 }
2003
2004 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2005 struct wireless_dev *txp_wdev = wdev;
2006 enum nl80211_tx_power_setting type;
2007 int idx, mbm = 0;
2008
2009 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2010 txp_wdev = NULL;
2011
2012 if (!rdev->ops->set_tx_power) {
2013 result = -EOPNOTSUPP;
2014 goto bad_res;
2015 }
2016
2017 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2018 type = nla_get_u32(info->attrs[idx]);
2019
2020 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2021 (type != NL80211_TX_POWER_AUTOMATIC)) {
2022 result = -EINVAL;
2023 goto bad_res;
2024 }
2025
2026 if (type != NL80211_TX_POWER_AUTOMATIC) {
2027 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2028 mbm = nla_get_u32(info->attrs[idx]);
2029 }
2030
2031 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2032 if (result)
2033 goto bad_res;
2034 }
2035
2036 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2037 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2038 u32 tx_ant, rx_ant;
2039 if ((!rdev->wiphy.available_antennas_tx &&
2040 !rdev->wiphy.available_antennas_rx) ||
2041 !rdev->ops->set_antenna) {
2042 result = -EOPNOTSUPP;
2043 goto bad_res;
2044 }
2045
2046 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2047 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2048
2049 /* reject antenna configurations which don't match the
2050 * available antenna masks, except for the "all" mask */
2051 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2052 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2053 result = -EINVAL;
2054 goto bad_res;
2055 }
2056
2057 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2058 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2059
2060 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2061 if (result)
2062 goto bad_res;
2063 }
2064
2065 changed = 0;
2066
2067 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2068 retry_short = nla_get_u8(
2069 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2070 if (retry_short == 0) {
2071 result = -EINVAL;
2072 goto bad_res;
2073 }
2074 changed |= WIPHY_PARAM_RETRY_SHORT;
2075 }
2076
2077 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2078 retry_long = nla_get_u8(
2079 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2080 if (retry_long == 0) {
2081 result = -EINVAL;
2082 goto bad_res;
2083 }
2084 changed |= WIPHY_PARAM_RETRY_LONG;
2085 }
2086
2087 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2088 frag_threshold = nla_get_u32(
2089 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2090 if (frag_threshold < 256) {
2091 result = -EINVAL;
2092 goto bad_res;
2093 }
2094 if (frag_threshold != (u32) -1) {
2095 /*
2096 * Fragments (apart from the last one) are required to
2097 * have even length. Make the fragmentation code
2098 * simpler by stripping LSB should someone try to use
2099 * odd threshold value.
2100 */
2101 frag_threshold &= ~0x1;
2102 }
2103 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2104 }
2105
2106 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2107 rts_threshold = nla_get_u32(
2108 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2109 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2110 }
2111
2112 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2113 coverage_class = nla_get_u8(
2114 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2115 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2116 }
2117
2118 if (changed) {
2119 u8 old_retry_short, old_retry_long;
2120 u32 old_frag_threshold, old_rts_threshold;
2121 u8 old_coverage_class;
2122
2123 if (!rdev->ops->set_wiphy_params) {
2124 result = -EOPNOTSUPP;
2125 goto bad_res;
2126 }
2127
2128 old_retry_short = rdev->wiphy.retry_short;
2129 old_retry_long = rdev->wiphy.retry_long;
2130 old_frag_threshold = rdev->wiphy.frag_threshold;
2131 old_rts_threshold = rdev->wiphy.rts_threshold;
2132 old_coverage_class = rdev->wiphy.coverage_class;
2133
2134 if (changed & WIPHY_PARAM_RETRY_SHORT)
2135 rdev->wiphy.retry_short = retry_short;
2136 if (changed & WIPHY_PARAM_RETRY_LONG)
2137 rdev->wiphy.retry_long = retry_long;
2138 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2139 rdev->wiphy.frag_threshold = frag_threshold;
2140 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2141 rdev->wiphy.rts_threshold = rts_threshold;
2142 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2143 rdev->wiphy.coverage_class = coverage_class;
2144
2145 result = rdev_set_wiphy_params(rdev, changed);
2146 if (result) {
2147 rdev->wiphy.retry_short = old_retry_short;
2148 rdev->wiphy.retry_long = old_retry_long;
2149 rdev->wiphy.frag_threshold = old_frag_threshold;
2150 rdev->wiphy.rts_threshold = old_rts_threshold;
2151 rdev->wiphy.coverage_class = old_coverage_class;
2152 }
2153 }
2154
2155 bad_res:
2156 if (netdev)
2157 dev_put(netdev);
2158 return result;
2159 }
2160
2161 static inline u64 wdev_id(struct wireless_dev *wdev)
2162 {
2163 return (u64)wdev->identifier |
2164 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2165 }
2166
2167 static int nl80211_send_chandef(struct sk_buff *msg,
2168 struct cfg80211_chan_def *chandef)
2169 {
2170 WARN_ON(!cfg80211_chandef_valid(chandef));
2171
2172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2173 chandef->chan->center_freq))
2174 return -ENOBUFS;
2175 switch (chandef->width) {
2176 case NL80211_CHAN_WIDTH_20_NOHT:
2177 case NL80211_CHAN_WIDTH_20:
2178 case NL80211_CHAN_WIDTH_40:
2179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2180 cfg80211_get_chandef_type(chandef)))
2181 return -ENOBUFS;
2182 break;
2183 default:
2184 break;
2185 }
2186 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2187 return -ENOBUFS;
2188 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2189 return -ENOBUFS;
2190 if (chandef->center_freq2 &&
2191 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2192 return -ENOBUFS;
2193 return 0;
2194 }
2195
2196 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2197 struct cfg80211_registered_device *rdev,
2198 struct wireless_dev *wdev)
2199 {
2200 struct net_device *dev = wdev->netdev;
2201 void *hdr;
2202
2203 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2204 if (!hdr)
2205 return -1;
2206
2207 if (dev &&
2208 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2209 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2210 goto nla_put_failure;
2211
2212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2213 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2214 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2216 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2217 rdev->devlist_generation ^
2218 (cfg80211_rdev_list_generation << 2)))
2219 goto nla_put_failure;
2220
2221 if (rdev->ops->get_channel) {
2222 int ret;
2223 struct cfg80211_chan_def chandef;
2224
2225 ret = rdev_get_channel(rdev, wdev, &chandef);
2226 if (ret == 0) {
2227 if (nl80211_send_chandef(msg, &chandef))
2228 goto nla_put_failure;
2229 }
2230 }
2231
2232 if (wdev->ssid_len) {
2233 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2234 goto nla_put_failure;
2235 }
2236
2237 return genlmsg_end(msg, hdr);
2238
2239 nla_put_failure:
2240 genlmsg_cancel(msg, hdr);
2241 return -EMSGSIZE;
2242 }
2243
2244 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2245 {
2246 int wp_idx = 0;
2247 int if_idx = 0;
2248 int wp_start = cb->args[0];
2249 int if_start = cb->args[1];
2250 struct cfg80211_registered_device *rdev;
2251 struct wireless_dev *wdev;
2252
2253 rtnl_lock();
2254 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2255 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2256 continue;
2257 if (wp_idx < wp_start) {
2258 wp_idx++;
2259 continue;
2260 }
2261 if_idx = 0;
2262
2263 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2264 if (if_idx < if_start) {
2265 if_idx++;
2266 continue;
2267 }
2268 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2269 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2270 rdev, wdev) < 0) {
2271 goto out;
2272 }
2273 if_idx++;
2274 }
2275
2276 wp_idx++;
2277 }
2278 out:
2279 rtnl_unlock();
2280
2281 cb->args[0] = wp_idx;
2282 cb->args[1] = if_idx;
2283
2284 return skb->len;
2285 }
2286
2287 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2288 {
2289 struct sk_buff *msg;
2290 struct cfg80211_registered_device *dev = info->user_ptr[0];
2291 struct wireless_dev *wdev = info->user_ptr[1];
2292
2293 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2294 if (!msg)
2295 return -ENOMEM;
2296
2297 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2298 dev, wdev) < 0) {
2299 nlmsg_free(msg);
2300 return -ENOBUFS;
2301 }
2302
2303 return genlmsg_reply(msg, info);
2304 }
2305
2306 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2307 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2308 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2309 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2310 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2311 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2312 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2313 };
2314
2315 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2316 {
2317 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2318 int flag;
2319
2320 *mntrflags = 0;
2321
2322 if (!nla)
2323 return -EINVAL;
2324
2325 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2326 nla, mntr_flags_policy))
2327 return -EINVAL;
2328
2329 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2330 if (flags[flag])
2331 *mntrflags |= (1<<flag);
2332
2333 return 0;
2334 }
2335
2336 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2337 struct net_device *netdev, u8 use_4addr,
2338 enum nl80211_iftype iftype)
2339 {
2340 if (!use_4addr) {
2341 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2342 return -EBUSY;
2343 return 0;
2344 }
2345
2346 switch (iftype) {
2347 case NL80211_IFTYPE_AP_VLAN:
2348 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2349 return 0;
2350 break;
2351 case NL80211_IFTYPE_STATION:
2352 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2353 return 0;
2354 break;
2355 default:
2356 break;
2357 }
2358
2359 return -EOPNOTSUPP;
2360 }
2361
2362 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2363 {
2364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2365 struct vif_params params;
2366 int err;
2367 enum nl80211_iftype otype, ntype;
2368 struct net_device *dev = info->user_ptr[1];
2369 u32 _flags, *flags = NULL;
2370 bool change = false;
2371
2372 memset(&params, 0, sizeof(params));
2373
2374 otype = ntype = dev->ieee80211_ptr->iftype;
2375
2376 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2377 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2378 if (otype != ntype)
2379 change = true;
2380 if (ntype > NL80211_IFTYPE_MAX)
2381 return -EINVAL;
2382 }
2383
2384 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2385 struct wireless_dev *wdev = dev->ieee80211_ptr;
2386
2387 if (ntype != NL80211_IFTYPE_MESH_POINT)
2388 return -EINVAL;
2389 if (netif_running(dev))
2390 return -EBUSY;
2391
2392 wdev_lock(wdev);
2393 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2394 IEEE80211_MAX_MESH_ID_LEN);
2395 wdev->mesh_id_up_len =
2396 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2397 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2398 wdev->mesh_id_up_len);
2399 wdev_unlock(wdev);
2400 }
2401
2402 if (info->attrs[NL80211_ATTR_4ADDR]) {
2403 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2404 change = true;
2405 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2406 if (err)
2407 return err;
2408 } else {
2409 params.use_4addr = -1;
2410 }
2411
2412 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2413 if (ntype != NL80211_IFTYPE_MONITOR)
2414 return -EINVAL;
2415 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2416 &_flags);
2417 if (err)
2418 return err;
2419
2420 flags = &_flags;
2421 change = true;
2422 }
2423
2424 if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2425 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2426 return -EOPNOTSUPP;
2427
2428 if (change)
2429 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2430 else
2431 err = 0;
2432
2433 if (!err && params.use_4addr != -1)
2434 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2435
2436 return err;
2437 }
2438
2439 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2440 {
2441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2442 struct vif_params params;
2443 struct wireless_dev *wdev;
2444 struct sk_buff *msg;
2445 int err;
2446 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2447 u32 flags;
2448
2449 memset(&params, 0, sizeof(params));
2450
2451 if (!info->attrs[NL80211_ATTR_IFNAME])
2452 return -EINVAL;
2453
2454 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2455 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2456 if (type > NL80211_IFTYPE_MAX)
2457 return -EINVAL;
2458 }
2459
2460 if (!rdev->ops->add_virtual_intf ||
2461 !(rdev->wiphy.interface_modes & (1 << type)))
2462 return -EOPNOTSUPP;
2463
2464 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2465 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2466 ETH_ALEN);
2467 if (!is_valid_ether_addr(params.macaddr))
2468 return -EADDRNOTAVAIL;
2469 }
2470
2471 if (info->attrs[NL80211_ATTR_4ADDR]) {
2472 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2473 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2474 if (err)
2475 return err;
2476 }
2477
2478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2479 if (!msg)
2480 return -ENOMEM;
2481
2482 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2483 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2484 &flags);
2485
2486 if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2487 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2488 return -EOPNOTSUPP;
2489
2490 wdev = rdev_add_virtual_intf(rdev,
2491 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2492 type, err ? NULL : &flags, &params);
2493 if (IS_ERR(wdev)) {
2494 nlmsg_free(msg);
2495 return PTR_ERR(wdev);
2496 }
2497
2498 switch (type) {
2499 case NL80211_IFTYPE_MESH_POINT:
2500 if (!info->attrs[NL80211_ATTR_MESH_ID])
2501 break;
2502 wdev_lock(wdev);
2503 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2504 IEEE80211_MAX_MESH_ID_LEN);
2505 wdev->mesh_id_up_len =
2506 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2507 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2508 wdev->mesh_id_up_len);
2509 wdev_unlock(wdev);
2510 break;
2511 case NL80211_IFTYPE_P2P_DEVICE:
2512 /*
2513 * P2P Device doesn't have a netdev, so doesn't go
2514 * through the netdev notifier and must be added here
2515 */
2516 mutex_init(&wdev->mtx);
2517 INIT_LIST_HEAD(&wdev->event_list);
2518 spin_lock_init(&wdev->event_lock);
2519 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2520 spin_lock_init(&wdev->mgmt_registrations_lock);
2521
2522 wdev->identifier = ++rdev->wdev_id;
2523 list_add_rcu(&wdev->list, &rdev->wdev_list);
2524 rdev->devlist_generation++;
2525 break;
2526 default:
2527 break;
2528 }
2529
2530 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2531 rdev, wdev) < 0) {
2532 nlmsg_free(msg);
2533 return -ENOBUFS;
2534 }
2535
2536 return genlmsg_reply(msg, info);
2537 }
2538
2539 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2540 {
2541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2542 struct wireless_dev *wdev = info->user_ptr[1];
2543
2544 if (!rdev->ops->del_virtual_intf)
2545 return -EOPNOTSUPP;
2546
2547 /*
2548 * If we remove a wireless device without a netdev then clear
2549 * user_ptr[1] so that nl80211_post_doit won't dereference it
2550 * to check if it needs to do dev_put(). Otherwise it crashes
2551 * since the wdev has been freed, unlike with a netdev where
2552 * we need the dev_put() for the netdev to really be freed.
2553 */
2554 if (!wdev->netdev)
2555 info->user_ptr[1] = NULL;
2556
2557 return rdev_del_virtual_intf(rdev, wdev);
2558 }
2559
2560 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2561 {
2562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2563 struct net_device *dev = info->user_ptr[1];
2564 u16 noack_map;
2565
2566 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2567 return -EINVAL;
2568
2569 if (!rdev->ops->set_noack_map)
2570 return -EOPNOTSUPP;
2571
2572 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2573
2574 return rdev_set_noack_map(rdev, dev, noack_map);
2575 }
2576
2577 struct get_key_cookie {
2578 struct sk_buff *msg;
2579 int error;
2580 int idx;
2581 };
2582
2583 static void get_key_callback(void *c, struct key_params *params)
2584 {
2585 struct nlattr *key;
2586 struct get_key_cookie *cookie = c;
2587
2588 if ((params->key &&
2589 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2590 params->key_len, params->key)) ||
2591 (params->seq &&
2592 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2593 params->seq_len, params->seq)) ||
2594 (params->cipher &&
2595 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2596 params->cipher)))
2597 goto nla_put_failure;
2598
2599 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2600 if (!key)
2601 goto nla_put_failure;
2602
2603 if ((params->key &&
2604 nla_put(cookie->msg, NL80211_KEY_DATA,
2605 params->key_len, params->key)) ||
2606 (params->seq &&
2607 nla_put(cookie->msg, NL80211_KEY_SEQ,
2608 params->seq_len, params->seq)) ||
2609 (params->cipher &&
2610 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2611 params->cipher)))
2612 goto nla_put_failure;
2613
2614 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2615 goto nla_put_failure;
2616
2617 nla_nest_end(cookie->msg, key);
2618
2619 return;
2620 nla_put_failure:
2621 cookie->error = 1;
2622 }
2623
2624 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2625 {
2626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2627 int err;
2628 struct net_device *dev = info->user_ptr[1];
2629 u8 key_idx = 0;
2630 const u8 *mac_addr = NULL;
2631 bool pairwise;
2632 struct get_key_cookie cookie = {
2633 .error = 0,
2634 };
2635 void *hdr;
2636 struct sk_buff *msg;
2637
2638 if (info->attrs[NL80211_ATTR_KEY_IDX])
2639 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2640
2641 if (key_idx > 5)
2642 return -EINVAL;
2643
2644 if (info->attrs[NL80211_ATTR_MAC])
2645 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2646
2647 pairwise = !!mac_addr;
2648 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2649 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2650 if (kt >= NUM_NL80211_KEYTYPES)
2651 return -EINVAL;
2652 if (kt != NL80211_KEYTYPE_GROUP &&
2653 kt != NL80211_KEYTYPE_PAIRWISE)
2654 return -EINVAL;
2655 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2656 }
2657
2658 if (!rdev->ops->get_key)
2659 return -EOPNOTSUPP;
2660
2661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2662 if (!msg)
2663 return -ENOMEM;
2664
2665 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2666 NL80211_CMD_NEW_KEY);
2667 if (!hdr)
2668 return -ENOBUFS;
2669
2670 cookie.msg = msg;
2671 cookie.idx = key_idx;
2672
2673 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2674 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2675 goto nla_put_failure;
2676 if (mac_addr &&
2677 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2678 goto nla_put_failure;
2679
2680 if (pairwise && mac_addr &&
2681 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2682 return -ENOENT;
2683
2684 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2685 get_key_callback);
2686
2687 if (err)
2688 goto free_msg;
2689
2690 if (cookie.error)
2691 goto nla_put_failure;
2692
2693 genlmsg_end(msg, hdr);
2694 return genlmsg_reply(msg, info);
2695
2696 nla_put_failure:
2697 err = -ENOBUFS;
2698 free_msg:
2699 nlmsg_free(msg);
2700 return err;
2701 }
2702
2703 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2704 {
2705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2706 struct key_parse key;
2707 int err;
2708 struct net_device *dev = info->user_ptr[1];
2709
2710 err = nl80211_parse_key(info, &key);
2711 if (err)
2712 return err;
2713
2714 if (key.idx < 0)
2715 return -EINVAL;
2716
2717 /* only support setting default key */
2718 if (!key.def && !key.defmgmt)
2719 return -EINVAL;
2720
2721 wdev_lock(dev->ieee80211_ptr);
2722
2723 if (key.def) {
2724 if (!rdev->ops->set_default_key) {
2725 err = -EOPNOTSUPP;
2726 goto out;
2727 }
2728
2729 err = nl80211_key_allowed(dev->ieee80211_ptr);
2730 if (err)
2731 goto out;
2732
2733 err = rdev_set_default_key(rdev, dev, key.idx,
2734 key.def_uni, key.def_multi);
2735
2736 if (err)
2737 goto out;
2738
2739 #ifdef CONFIG_CFG80211_WEXT
2740 dev->ieee80211_ptr->wext.default_key = key.idx;
2741 #endif
2742 } else {
2743 if (key.def_uni || !key.def_multi) {
2744 err = -EINVAL;
2745 goto out;
2746 }
2747
2748 if (!rdev->ops->set_default_mgmt_key) {
2749 err = -EOPNOTSUPP;
2750 goto out;
2751 }
2752
2753 err = nl80211_key_allowed(dev->ieee80211_ptr);
2754 if (err)
2755 goto out;
2756
2757 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2758 if (err)
2759 goto out;
2760
2761 #ifdef CONFIG_CFG80211_WEXT
2762 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2763 #endif
2764 }
2765
2766 out:
2767 wdev_unlock(dev->ieee80211_ptr);
2768
2769 return err;
2770 }
2771
2772 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2773 {
2774 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2775 int err;
2776 struct net_device *dev = info->user_ptr[1];
2777 struct key_parse key;
2778 const u8 *mac_addr = NULL;
2779
2780 err = nl80211_parse_key(info, &key);
2781 if (err)
2782 return err;
2783
2784 if (!key.p.key)
2785 return -EINVAL;
2786
2787 if (info->attrs[NL80211_ATTR_MAC])
2788 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2789
2790 if (key.type == -1) {
2791 if (mac_addr)
2792 key.type = NL80211_KEYTYPE_PAIRWISE;
2793 else
2794 key.type = NL80211_KEYTYPE_GROUP;
2795 }
2796
2797 /* for now */
2798 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2799 key.type != NL80211_KEYTYPE_GROUP)
2800 return -EINVAL;
2801
2802 if (!rdev->ops->add_key)
2803 return -EOPNOTSUPP;
2804
2805 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2806 key.type == NL80211_KEYTYPE_PAIRWISE,
2807 mac_addr))
2808 return -EINVAL;
2809
2810 wdev_lock(dev->ieee80211_ptr);
2811 err = nl80211_key_allowed(dev->ieee80211_ptr);
2812 if (!err)
2813 err = rdev_add_key(rdev, dev, key.idx,
2814 key.type == NL80211_KEYTYPE_PAIRWISE,
2815 mac_addr, &key.p);
2816 wdev_unlock(dev->ieee80211_ptr);
2817
2818 return err;
2819 }
2820
2821 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2822 {
2823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2824 int err;
2825 struct net_device *dev = info->user_ptr[1];
2826 u8 *mac_addr = NULL;
2827 struct key_parse key;
2828
2829 err = nl80211_parse_key(info, &key);
2830 if (err)
2831 return err;
2832
2833 if (info->attrs[NL80211_ATTR_MAC])
2834 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2835
2836 if (key.type == -1) {
2837 if (mac_addr)
2838 key.type = NL80211_KEYTYPE_PAIRWISE;
2839 else
2840 key.type = NL80211_KEYTYPE_GROUP;
2841 }
2842
2843 /* for now */
2844 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2845 key.type != NL80211_KEYTYPE_GROUP)
2846 return -EINVAL;
2847
2848 if (!rdev->ops->del_key)
2849 return -EOPNOTSUPP;
2850
2851 wdev_lock(dev->ieee80211_ptr);
2852 err = nl80211_key_allowed(dev->ieee80211_ptr);
2853
2854 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2855 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2856 err = -ENOENT;
2857
2858 if (!err)
2859 err = rdev_del_key(rdev, dev, key.idx,
2860 key.type == NL80211_KEYTYPE_PAIRWISE,
2861 mac_addr);
2862
2863 #ifdef CONFIG_CFG80211_WEXT
2864 if (!err) {
2865 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2866 dev->ieee80211_ptr->wext.default_key = -1;
2867 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2868 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2869 }
2870 #endif
2871 wdev_unlock(dev->ieee80211_ptr);
2872
2873 return err;
2874 }
2875
2876 /* This function returns an error or the number of nested attributes */
2877 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2878 {
2879 struct nlattr *attr;
2880 int n_entries = 0, tmp;
2881
2882 nla_for_each_nested(attr, nl_attr, tmp) {
2883 if (nla_len(attr) != ETH_ALEN)
2884 return -EINVAL;
2885
2886 n_entries++;
2887 }
2888
2889 return n_entries;
2890 }
2891
2892 /*
2893 * This function parses ACL information and allocates memory for ACL data.
2894 * On successful return, the calling function is responsible to free the
2895 * ACL buffer returned by this function.
2896 */
2897 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2898 struct genl_info *info)
2899 {
2900 enum nl80211_acl_policy acl_policy;
2901 struct nlattr *attr;
2902 struct cfg80211_acl_data *acl;
2903 int i = 0, n_entries, tmp;
2904
2905 if (!wiphy->max_acl_mac_addrs)
2906 return ERR_PTR(-EOPNOTSUPP);
2907
2908 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2909 return ERR_PTR(-EINVAL);
2910
2911 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2912 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2913 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2914 return ERR_PTR(-EINVAL);
2915
2916 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2917 return ERR_PTR(-EINVAL);
2918
2919 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2920 if (n_entries < 0)
2921 return ERR_PTR(n_entries);
2922
2923 if (n_entries > wiphy->max_acl_mac_addrs)
2924 return ERR_PTR(-ENOTSUPP);
2925
2926 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2927 GFP_KERNEL);
2928 if (!acl)
2929 return ERR_PTR(-ENOMEM);
2930
2931 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2932 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2933 i++;
2934 }
2935
2936 acl->n_acl_entries = n_entries;
2937 acl->acl_policy = acl_policy;
2938
2939 return acl;
2940 }
2941
2942 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2943 {
2944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2945 struct net_device *dev = info->user_ptr[1];
2946 struct cfg80211_acl_data *acl;
2947 int err;
2948
2949 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2950 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2951 return -EOPNOTSUPP;
2952
2953 if (!dev->ieee80211_ptr->beacon_interval)
2954 return -EINVAL;
2955
2956 acl = parse_acl_data(&rdev->wiphy, info);
2957 if (IS_ERR(acl))
2958 return PTR_ERR(acl);
2959
2960 err = rdev_set_mac_acl(rdev, dev, acl);
2961
2962 kfree(acl);
2963
2964 return err;
2965 }
2966
2967 static int nl80211_parse_beacon(struct nlattr *attrs[],
2968 struct cfg80211_beacon_data *bcn)
2969 {
2970 bool haveinfo = false;
2971
2972 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2973 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2974 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2975 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2976 return -EINVAL;
2977
2978 memset(bcn, 0, sizeof(*bcn));
2979
2980 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2981 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2982 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2983 if (!bcn->head_len)
2984 return -EINVAL;
2985 haveinfo = true;
2986 }
2987
2988 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2989 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2990 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2991 haveinfo = true;
2992 }
2993
2994 if (!haveinfo)
2995 return -EINVAL;
2996
2997 if (attrs[NL80211_ATTR_IE]) {
2998 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2999 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3000 }
3001
3002 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3003 bcn->proberesp_ies =
3004 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3005 bcn->proberesp_ies_len =
3006 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3007 }
3008
3009 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3010 bcn->assocresp_ies =
3011 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3012 bcn->assocresp_ies_len =
3013 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3014 }
3015
3016 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3017 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3018 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3019 }
3020
3021 return 0;
3022 }
3023
3024 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3025 struct cfg80211_ap_settings *params)
3026 {
3027 struct wireless_dev *wdev;
3028 bool ret = false;
3029
3030 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3031 if (wdev->iftype != NL80211_IFTYPE_AP &&
3032 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3033 continue;
3034
3035 if (!wdev->preset_chandef.chan)
3036 continue;
3037
3038 params->chandef = wdev->preset_chandef;
3039 ret = true;
3040 break;
3041 }
3042
3043 return ret;
3044 }
3045
3046 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3047 enum nl80211_auth_type auth_type,
3048 enum nl80211_commands cmd)
3049 {
3050 if (auth_type > NL80211_AUTHTYPE_MAX)
3051 return false;
3052
3053 switch (cmd) {
3054 case NL80211_CMD_AUTHENTICATE:
3055 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3056 auth_type == NL80211_AUTHTYPE_SAE)
3057 return false;
3058 return true;
3059 case NL80211_CMD_CONNECT:
3060 case NL80211_CMD_START_AP:
3061 /* SAE not supported yet */
3062 if (auth_type == NL80211_AUTHTYPE_SAE)
3063 return false;
3064 return true;
3065 default:
3066 return false;
3067 }
3068 }
3069
3070 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3071 {
3072 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3073 struct net_device *dev = info->user_ptr[1];
3074 struct wireless_dev *wdev = dev->ieee80211_ptr;
3075 struct cfg80211_ap_settings params;
3076 int err;
3077 u8 radar_detect_width = 0;
3078
3079 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3080 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3081 return -EOPNOTSUPP;
3082
3083 if (!rdev->ops->start_ap)
3084 return -EOPNOTSUPP;
3085
3086 if (wdev->beacon_interval)
3087 return -EALREADY;
3088
3089 memset(&params, 0, sizeof(params));
3090
3091 /* these are required for START_AP */
3092 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3093 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3094 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3095 return -EINVAL;
3096
3097 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3098 if (err)
3099 return err;
3100
3101 params.beacon_interval =
3102 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3103 params.dtim_period =
3104 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3105
3106 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3107 if (err)
3108 return err;
3109
3110 /*
3111 * In theory, some of these attributes should be required here
3112 * but since they were not used when the command was originally
3113 * added, keep them optional for old user space programs to let
3114 * them continue to work with drivers that do not need the
3115 * additional information -- drivers must check!
3116 */
3117 if (info->attrs[NL80211_ATTR_SSID]) {
3118 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3119 params.ssid_len =
3120 nla_len(info->attrs[NL80211_ATTR_SSID]);
3121 if (params.ssid_len == 0 ||
3122 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3123 return -EINVAL;
3124 }
3125
3126 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3127 params.hidden_ssid = nla_get_u32(
3128 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3129 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3130 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3131 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3132 return -EINVAL;
3133 }
3134
3135 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3136
3137 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3138 params.auth_type = nla_get_u32(
3139 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3140 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3141 NL80211_CMD_START_AP))
3142 return -EINVAL;
3143 } else
3144 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3145
3146 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3147 NL80211_MAX_NR_CIPHER_SUITES);
3148 if (err)
3149 return err;
3150
3151 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3152 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3153 return -EOPNOTSUPP;
3154 params.inactivity_timeout = nla_get_u16(
3155 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3156 }
3157
3158 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3159 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3160 return -EINVAL;
3161 params.p2p_ctwindow =
3162 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3163 if (params.p2p_ctwindow > 127)
3164 return -EINVAL;
3165 if (params.p2p_ctwindow != 0 &&
3166 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3167 return -EINVAL;
3168 }
3169
3170 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3171 u8 tmp;
3172
3173 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3174 return -EINVAL;
3175 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3176 if (tmp > 1)
3177 return -EINVAL;
3178 params.p2p_opp_ps = tmp;
3179 if (params.p2p_opp_ps != 0 &&
3180 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3181 return -EINVAL;
3182 }
3183
3184 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3185 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3186 if (err)
3187 return err;
3188 } else if (wdev->preset_chandef.chan) {
3189 params.chandef = wdev->preset_chandef;
3190 } else if (!nl80211_get_ap_channel(rdev, &params))
3191 return -EINVAL;
3192
3193 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3194 return -EINVAL;
3195
3196 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3197 if (err < 0)
3198 return err;
3199 if (err) {
3200 radar_detect_width = BIT(params.chandef.width);
3201 params.radar_required = true;
3202 }
3203
3204 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3205 params.chandef.chan,
3206 CHAN_MODE_SHARED,
3207 radar_detect_width);
3208 if (err)
3209 return err;
3210
3211 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3212 params.acl = parse_acl_data(&rdev->wiphy, info);
3213 if (IS_ERR(params.acl))
3214 return PTR_ERR(params.acl);
3215 }
3216
3217 err = rdev_start_ap(rdev, dev, &params);
3218 if (!err) {
3219 wdev->preset_chandef = params.chandef;
3220 wdev->beacon_interval = params.beacon_interval;
3221 wdev->channel = params.chandef.chan;
3222 wdev->ssid_len = params.ssid_len;
3223 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3224 }
3225
3226 kfree(params.acl);
3227
3228 return err;
3229 }
3230
3231 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3232 {
3233 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3234 struct net_device *dev = info->user_ptr[1];
3235 struct wireless_dev *wdev = dev->ieee80211_ptr;
3236 struct cfg80211_beacon_data params;
3237 int err;
3238
3239 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3240 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3241 return -EOPNOTSUPP;
3242
3243 if (!rdev->ops->change_beacon)
3244 return -EOPNOTSUPP;
3245
3246 if (!wdev->beacon_interval)
3247 return -EINVAL;
3248
3249 err = nl80211_parse_beacon(info->attrs, &params);
3250 if (err)
3251 return err;
3252
3253 return rdev_change_beacon(rdev, dev, &params);
3254 }
3255
3256 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3257 {
3258 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3259 struct net_device *dev = info->user_ptr[1];
3260
3261 return cfg80211_stop_ap(rdev, dev);
3262 }
3263
3264 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3265 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3266 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3267 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3268 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3269 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3270 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3271 };
3272
3273 static int parse_station_flags(struct genl_info *info,
3274 enum nl80211_iftype iftype,
3275 struct station_parameters *params)
3276 {
3277 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3278 struct nlattr *nla;
3279 int flag;
3280
3281 /*
3282 * Try parsing the new attribute first so userspace
3283 * can specify both for older kernels.
3284 */
3285 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3286 if (nla) {
3287 struct nl80211_sta_flag_update *sta_flags;
3288
3289 sta_flags = nla_data(nla);
3290 params->sta_flags_mask = sta_flags->mask;
3291 params->sta_flags_set = sta_flags->set;
3292 params->sta_flags_set &= params->sta_flags_mask;
3293 if ((params->sta_flags_mask |
3294 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3295 return -EINVAL;
3296 return 0;
3297 }
3298
3299 /* if present, parse the old attribute */
3300
3301 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3302 if (!nla)
3303 return 0;
3304
3305 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3306 nla, sta_flags_policy))
3307 return -EINVAL;
3308
3309 /*
3310 * Only allow certain flags for interface types so that
3311 * other attributes are silently ignored. Remember that
3312 * this is backward compatibility code with old userspace
3313 * and shouldn't be hit in other cases anyway.
3314 */
3315 switch (iftype) {
3316 case NL80211_IFTYPE_AP:
3317 case NL80211_IFTYPE_AP_VLAN:
3318 case NL80211_IFTYPE_P2P_GO:
3319 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3320 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3321 BIT(NL80211_STA_FLAG_WME) |
3322 BIT(NL80211_STA_FLAG_MFP);
3323 break;
3324 case NL80211_IFTYPE_P2P_CLIENT:
3325 case NL80211_IFTYPE_STATION:
3326 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3327 BIT(NL80211_STA_FLAG_TDLS_PEER);
3328 break;
3329 case NL80211_IFTYPE_MESH_POINT:
3330 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3331 BIT(NL80211_STA_FLAG_MFP) |
3332 BIT(NL80211_STA_FLAG_AUTHORIZED);
3333 default:
3334 return -EINVAL;
3335 }
3336
3337 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3338 if (flags[flag]) {
3339 params->sta_flags_set |= (1<<flag);
3340
3341 /* no longer support new API additions in old API */
3342 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3343 return -EINVAL;
3344 }
3345 }
3346
3347 return 0;
3348 }
3349
3350 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3351 int attr)
3352 {
3353 struct nlattr *rate;
3354 u32 bitrate;
3355 u16 bitrate_compat;
3356
3357 rate = nla_nest_start(msg, attr);
3358 if (!rate)
3359 return false;
3360
3361 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3362 bitrate = cfg80211_calculate_bitrate(info);
3363 /* report 16-bit bitrate only if we can */
3364 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3365 if (bitrate > 0 &&
3366 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3367 return false;
3368 if (bitrate_compat > 0 &&
3369 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3370 return false;
3371
3372 if (info->flags & RATE_INFO_FLAGS_MCS) {
3373 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3374 return false;
3375 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3376 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3377 return false;
3378 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3379 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3380 return false;
3381 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3382 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3383 return false;
3384 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3385 return false;
3386 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3387 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3388 return false;
3389 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3390 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3391 return false;
3392 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3393 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3394 return false;
3395 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3396 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3397 return false;
3398 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3399 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3400 return false;
3401 }
3402
3403 nla_nest_end(msg, rate);
3404 return true;
3405 }
3406
3407 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3408 int id)
3409 {
3410 void *attr;
3411 int i = 0;
3412
3413 if (!mask)
3414 return true;
3415
3416 attr = nla_nest_start(msg, id);
3417 if (!attr)
3418 return false;
3419
3420 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3421 if (!(mask & BIT(i)))
3422 continue;
3423
3424 if (nla_put_u8(msg, i, signal[i]))
3425 return false;
3426 }
3427
3428 nla_nest_end(msg, attr);
3429
3430 return true;
3431 }
3432
3433 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3434 int flags,
3435 struct cfg80211_registered_device *rdev,
3436 struct net_device *dev,
3437 const u8 *mac_addr, struct station_info *sinfo)
3438 {
3439 void *hdr;
3440 struct nlattr *sinfoattr, *bss_param;
3441
3442 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3443 if (!hdr)
3444 return -1;
3445
3446 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3447 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3448 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3449 goto nla_put_failure;
3450
3451 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3452 if (!sinfoattr)
3453 goto nla_put_failure;
3454 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3455 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3456 sinfo->connected_time))
3457 goto nla_put_failure;
3458 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3459 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3460 sinfo->inactive_time))
3461 goto nla_put_failure;
3462 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3463 STATION_INFO_RX_BYTES64)) &&
3464 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3465 (u32)sinfo->rx_bytes))
3466 goto nla_put_failure;
3467 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3468 STATION_INFO_TX_BYTES64)) &&
3469 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3470 (u32)sinfo->tx_bytes))
3471 goto nla_put_failure;
3472 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3473 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3474 sinfo->rx_bytes))
3475 goto nla_put_failure;
3476 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3477 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3478 sinfo->tx_bytes))
3479 goto nla_put_failure;
3480 if ((sinfo->filled & STATION_INFO_LLID) &&
3481 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3482 goto nla_put_failure;
3483 if ((sinfo->filled & STATION_INFO_PLID) &&
3484 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3485 goto nla_put_failure;
3486 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3487 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3488 sinfo->plink_state))
3489 goto nla_put_failure;
3490 switch (rdev->wiphy.signal_type) {
3491 case CFG80211_SIGNAL_TYPE_MBM:
3492 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3493 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3494 sinfo->signal))
3495 goto nla_put_failure;
3496 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3497 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3498 sinfo->signal_avg))
3499 goto nla_put_failure;
3500 break;
3501 default:
3502 break;
3503 }
3504 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3505 if (!nl80211_put_signal(msg, sinfo->chains,
3506 sinfo->chain_signal,
3507 NL80211_STA_INFO_CHAIN_SIGNAL))
3508 goto nla_put_failure;
3509 }
3510 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3511 if (!nl80211_put_signal(msg, sinfo->chains,
3512 sinfo->chain_signal_avg,
3513 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3514 goto nla_put_failure;
3515 }
3516 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3517 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3518 NL80211_STA_INFO_TX_BITRATE))
3519 goto nla_put_failure;
3520 }
3521 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3522 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3523 NL80211_STA_INFO_RX_BITRATE))
3524 goto nla_put_failure;
3525 }
3526 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3527 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3528 sinfo->rx_packets))
3529 goto nla_put_failure;
3530 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3531 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3532 sinfo->tx_packets))
3533 goto nla_put_failure;
3534 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3535 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3536 sinfo->tx_retries))
3537 goto nla_put_failure;
3538 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3539 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3540 sinfo->tx_failed))
3541 goto nla_put_failure;
3542 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3543 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3544 sinfo->beacon_loss_count))
3545 goto nla_put_failure;
3546 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3547 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3548 sinfo->local_pm))
3549 goto nla_put_failure;
3550 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3551 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3552 sinfo->peer_pm))
3553 goto nla_put_failure;
3554 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3555 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3556 sinfo->nonpeer_pm))
3557 goto nla_put_failure;
3558 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3559 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3560 if (!bss_param)
3561 goto nla_put_failure;
3562
3563 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3564 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3565 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3566 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3567 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3568 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3569 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3570 sinfo->bss_param.dtim_period) ||
3571 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3572 sinfo->bss_param.beacon_interval))
3573 goto nla_put_failure;
3574
3575 nla_nest_end(msg, bss_param);
3576 }
3577 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3578 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3579 sizeof(struct nl80211_sta_flag_update),
3580 &sinfo->sta_flags))
3581 goto nla_put_failure;
3582 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3583 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3584 sinfo->t_offset))
3585 goto nla_put_failure;
3586 nla_nest_end(msg, sinfoattr);
3587
3588 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3589 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3590 sinfo->assoc_req_ies))
3591 goto nla_put_failure;
3592
3593 return genlmsg_end(msg, hdr);
3594
3595 nla_put_failure:
3596 genlmsg_cancel(msg, hdr);
3597 return -EMSGSIZE;
3598 }
3599
3600 static int nl80211_dump_station(struct sk_buff *skb,
3601 struct netlink_callback *cb)
3602 {
3603 struct station_info sinfo;
3604 struct cfg80211_registered_device *dev;
3605 struct wireless_dev *wdev;
3606 u8 mac_addr[ETH_ALEN];
3607 int sta_idx = cb->args[2];
3608 int err;
3609
3610 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3611 if (err)
3612 return err;
3613
3614 if (!wdev->netdev) {
3615 err = -EINVAL;
3616 goto out_err;
3617 }
3618
3619 if (!dev->ops->dump_station) {
3620 err = -EOPNOTSUPP;
3621 goto out_err;
3622 }
3623
3624 while (1) {
3625 memset(&sinfo, 0, sizeof(sinfo));
3626 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3627 mac_addr, &sinfo);
3628 if (err == -ENOENT)
3629 break;
3630 if (err)
3631 goto out_err;
3632
3633 if (nl80211_send_station(skb,
3634 NETLINK_CB(cb->skb).portid,
3635 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3636 dev, wdev->netdev, mac_addr,
3637 &sinfo) < 0)
3638 goto out;
3639
3640 sta_idx++;
3641 }
3642
3643
3644 out:
3645 cb->args[2] = sta_idx;
3646 err = skb->len;
3647 out_err:
3648 nl80211_finish_wdev_dump(dev);
3649
3650 return err;
3651 }
3652
3653 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3654 {
3655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3656 struct net_device *dev = info->user_ptr[1];
3657 struct station_info sinfo;
3658 struct sk_buff *msg;
3659 u8 *mac_addr = NULL;
3660 int err;
3661
3662 memset(&sinfo, 0, sizeof(sinfo));
3663
3664 if (!info->attrs[NL80211_ATTR_MAC])
3665 return -EINVAL;
3666
3667 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3668
3669 if (!rdev->ops->get_station)
3670 return -EOPNOTSUPP;
3671
3672 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3673 if (err)
3674 return err;
3675
3676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3677 if (!msg)
3678 return -ENOMEM;
3679
3680 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3681 rdev, dev, mac_addr, &sinfo) < 0) {
3682 nlmsg_free(msg);
3683 return -ENOBUFS;
3684 }
3685
3686 return genlmsg_reply(msg, info);
3687 }
3688
3689 int cfg80211_check_station_change(struct wiphy *wiphy,
3690 struct station_parameters *params,
3691 enum cfg80211_station_type statype)
3692 {
3693 if (params->listen_interval != -1)
3694 return -EINVAL;
3695 if (params->aid)
3696 return -EINVAL;
3697
3698 /* When you run into this, adjust the code below for the new flag */
3699 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3700
3701 switch (statype) {
3702 case CFG80211_STA_MESH_PEER_KERNEL:
3703 case CFG80211_STA_MESH_PEER_USER:
3704 /*
3705 * No ignoring the TDLS flag here -- the userspace mesh
3706 * code doesn't have the bug of including TDLS in the
3707 * mask everywhere.
3708 */
3709 if (params->sta_flags_mask &
3710 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3711 BIT(NL80211_STA_FLAG_MFP) |
3712 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3713 return -EINVAL;
3714 break;
3715 case CFG80211_STA_TDLS_PEER_SETUP:
3716 case CFG80211_STA_TDLS_PEER_ACTIVE:
3717 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3718 return -EINVAL;
3719 /* ignore since it can't change */
3720 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3721 break;
3722 default:
3723 /* disallow mesh-specific things */
3724 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3725 return -EINVAL;
3726 if (params->local_pm)
3727 return -EINVAL;
3728 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3729 return -EINVAL;
3730 }
3731
3732 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3733 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3734 /* TDLS can't be set, ... */
3735 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3736 return -EINVAL;
3737 /*
3738 * ... but don't bother the driver with it. This works around
3739 * a hostapd/wpa_supplicant issue -- it always includes the
3740 * TLDS_PEER flag in the mask even for AP mode.
3741 */
3742 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3743 }
3744
3745 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3746 /* reject other things that can't change */
3747 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3748 return -EINVAL;
3749 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3750 return -EINVAL;
3751 if (params->supported_rates)
3752 return -EINVAL;
3753 if (params->ext_capab || params->ht_capa || params->vht_capa)
3754 return -EINVAL;
3755 }
3756
3757 if (statype != CFG80211_STA_AP_CLIENT) {
3758 if (params->vlan)
3759 return -EINVAL;
3760 }
3761
3762 switch (statype) {
3763 case CFG80211_STA_AP_MLME_CLIENT:
3764 /* Use this only for authorizing/unauthorizing a station */
3765 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3766 return -EOPNOTSUPP;
3767 break;
3768 case CFG80211_STA_AP_CLIENT:
3769 /* accept only the listed bits */
3770 if (params->sta_flags_mask &
3771 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3772 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3773 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3774 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3775 BIT(NL80211_STA_FLAG_WME) |
3776 BIT(NL80211_STA_FLAG_MFP)))
3777 return -EINVAL;
3778
3779 /* but authenticated/associated only if driver handles it */
3780 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3781 params->sta_flags_mask &
3782 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3783 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3784 return -EINVAL;
3785 break;
3786 case CFG80211_STA_IBSS:
3787 case CFG80211_STA_AP_STA:
3788 /* reject any changes other than AUTHORIZED */
3789 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3790 return -EINVAL;
3791 break;
3792 case CFG80211_STA_TDLS_PEER_SETUP:
3793 /* reject any changes other than AUTHORIZED or WME */
3794 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3795 BIT(NL80211_STA_FLAG_WME)))
3796 return -EINVAL;
3797 /* force (at least) rates when authorizing */
3798 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3799 !params->supported_rates)
3800 return -EINVAL;
3801 break;
3802 case CFG80211_STA_TDLS_PEER_ACTIVE:
3803 /* reject any changes */
3804 return -EINVAL;
3805 case CFG80211_STA_MESH_PEER_KERNEL:
3806 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3807 return -EINVAL;
3808 break;
3809 case CFG80211_STA_MESH_PEER_USER:
3810 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3811 return -EINVAL;
3812 break;
3813 }
3814
3815 return 0;
3816 }
3817 EXPORT_SYMBOL(cfg80211_check_station_change);
3818
3819 /*
3820 * Get vlan interface making sure it is running and on the right wiphy.
3821 */
3822 static struct net_device *get_vlan(struct genl_info *info,
3823 struct cfg80211_registered_device *rdev)
3824 {
3825 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3826 struct net_device *v;
3827 int ret;
3828
3829 if (!vlanattr)
3830 return NULL;
3831
3832 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3833 if (!v)
3834 return ERR_PTR(-ENODEV);
3835
3836 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3837 ret = -EINVAL;
3838 goto error;
3839 }
3840
3841 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3842 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3843 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3844 ret = -EINVAL;
3845 goto error;
3846 }
3847
3848 if (!netif_running(v)) {
3849 ret = -ENETDOWN;
3850 goto error;
3851 }
3852
3853 return v;
3854 error:
3855 dev_put(v);
3856 return ERR_PTR(ret);
3857 }
3858
3859 static struct nla_policy
3860 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3861 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3862 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3863 };
3864
3865 static int nl80211_parse_sta_wme(struct genl_info *info,
3866 struct station_parameters *params)
3867 {
3868 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3869 struct nlattr *nla;
3870 int err;
3871
3872 /* parse WME attributes if present */
3873 if (!info->attrs[NL80211_ATTR_STA_WME])
3874 return 0;
3875
3876 nla = info->attrs[NL80211_ATTR_STA_WME];
3877 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3878 nl80211_sta_wme_policy);
3879 if (err)
3880 return err;
3881
3882 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3883 params->uapsd_queues = nla_get_u8(
3884 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3885 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3886 return -EINVAL;
3887
3888 if (tb[NL80211_STA_WME_MAX_SP])
3889 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3890
3891 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3892 return -EINVAL;
3893
3894 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3895
3896 return 0;
3897 }
3898
3899 static int nl80211_set_station_tdls(struct genl_info *info,
3900 struct station_parameters *params)
3901 {
3902 /* Dummy STA entry gets updated once the peer capabilities are known */
3903 if (info->attrs[NL80211_ATTR_PEER_AID])
3904 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3905 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3906 params->ht_capa =
3907 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3908 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3909 params->vht_capa =
3910 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3911
3912 return nl80211_parse_sta_wme(info, params);
3913 }
3914
3915 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3916 {
3917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3918 struct net_device *dev = info->user_ptr[1];
3919 struct station_parameters params;
3920 u8 *mac_addr;
3921 int err;
3922
3923 memset(&params, 0, sizeof(params));
3924
3925 params.listen_interval = -1;
3926
3927 if (!rdev->ops->change_station)
3928 return -EOPNOTSUPP;
3929
3930 if (info->attrs[NL80211_ATTR_STA_AID])
3931 return -EINVAL;
3932
3933 if (!info->attrs[NL80211_ATTR_MAC])
3934 return -EINVAL;
3935
3936 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3937
3938 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3939 params.supported_rates =
3940 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3941 params.supported_rates_len =
3942 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3943 }
3944
3945 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3946 params.capability =
3947 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3948 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3949 }
3950
3951 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3952 params.ext_capab =
3953 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3954 params.ext_capab_len =
3955 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3956 }
3957
3958 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3959 return -EINVAL;
3960
3961 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3962 return -EINVAL;
3963
3964 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3965 params.plink_action =
3966 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3967 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3968 return -EINVAL;
3969 }
3970
3971 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3972 params.plink_state =
3973 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3974 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3975 return -EINVAL;
3976 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3977 }
3978
3979 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3980 enum nl80211_mesh_power_mode pm = nla_get_u32(
3981 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3982
3983 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3984 pm > NL80211_MESH_POWER_MAX)
3985 return -EINVAL;
3986
3987 params.local_pm = pm;
3988 }
3989
3990 /* Include parameters for TDLS peer (will check later) */
3991 err = nl80211_set_station_tdls(info, &params);
3992 if (err)
3993 return err;
3994
3995 params.vlan = get_vlan(info, rdev);
3996 if (IS_ERR(params.vlan))
3997 return PTR_ERR(params.vlan);
3998
3999 switch (dev->ieee80211_ptr->iftype) {
4000 case NL80211_IFTYPE_AP:
4001 case NL80211_IFTYPE_AP_VLAN:
4002 case NL80211_IFTYPE_P2P_GO:
4003 case NL80211_IFTYPE_P2P_CLIENT:
4004 case NL80211_IFTYPE_STATION:
4005 case NL80211_IFTYPE_ADHOC:
4006 case NL80211_IFTYPE_MESH_POINT:
4007 break;
4008 default:
4009 err = -EOPNOTSUPP;
4010 goto out_put_vlan;
4011 }
4012
4013 /* driver will call cfg80211_check_station_change() */
4014 err = rdev_change_station(rdev, dev, mac_addr, &params);
4015
4016 out_put_vlan:
4017 if (params.vlan)
4018 dev_put(params.vlan);
4019
4020 return err;
4021 }
4022
4023 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4024 {
4025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4026 int err;
4027 struct net_device *dev = info->user_ptr[1];
4028 struct station_parameters params;
4029 u8 *mac_addr = NULL;
4030
4031 memset(&params, 0, sizeof(params));
4032
4033 if (!rdev->ops->add_station)
4034 return -EOPNOTSUPP;
4035
4036 if (!info->attrs[NL80211_ATTR_MAC])
4037 return -EINVAL;
4038
4039 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4040 return -EINVAL;
4041
4042 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4043 return -EINVAL;
4044
4045 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4046 !info->attrs[NL80211_ATTR_PEER_AID])
4047 return -EINVAL;
4048
4049 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4050 params.supported_rates =
4051 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4052 params.supported_rates_len =
4053 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4054 params.listen_interval =
4055 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4056
4057 if (info->attrs[NL80211_ATTR_PEER_AID])
4058 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4059 else
4060 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4061 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4062 return -EINVAL;
4063
4064 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4065 params.capability =
4066 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4067 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4068 }
4069
4070 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4071 params.ext_capab =
4072 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4073 params.ext_capab_len =
4074 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4075 }
4076
4077 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4078 params.ht_capa =
4079 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4080
4081 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4082 params.vht_capa =
4083 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4084
4085 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4086 params.plink_action =
4087 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4088 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4089 return -EINVAL;
4090 }
4091
4092 err = nl80211_parse_sta_wme(info, &params);
4093 if (err)
4094 return err;
4095
4096 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4097 return -EINVAL;
4098
4099 /* When you run into this, adjust the code below for the new flag */
4100 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4101
4102 switch (dev->ieee80211_ptr->iftype) {
4103 case NL80211_IFTYPE_AP:
4104 case NL80211_IFTYPE_AP_VLAN:
4105 case NL80211_IFTYPE_P2P_GO:
4106 /* ignore WME attributes if iface/sta is not capable */
4107 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4108 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4109 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4110
4111 /* TDLS peers cannot be added */
4112 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4113 info->attrs[NL80211_ATTR_PEER_AID])
4114 return -EINVAL;
4115 /* but don't bother the driver with it */
4116 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4117
4118 /* allow authenticated/associated only if driver handles it */
4119 if (!(rdev->wiphy.features &
4120 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4121 params.sta_flags_mask &
4122 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4123 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4124 return -EINVAL;
4125
4126 /* must be last in here for error handling */
4127 params.vlan = get_vlan(info, rdev);
4128 if (IS_ERR(params.vlan))
4129 return PTR_ERR(params.vlan);
4130 break;
4131 case NL80211_IFTYPE_MESH_POINT:
4132 /* ignore uAPSD data */
4133 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4134
4135 /* associated is disallowed */
4136 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4137 return -EINVAL;
4138 /* TDLS peers cannot be added */
4139 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4140 info->attrs[NL80211_ATTR_PEER_AID])
4141 return -EINVAL;
4142 break;
4143 case NL80211_IFTYPE_STATION:
4144 case NL80211_IFTYPE_P2P_CLIENT:
4145 /* ignore uAPSD data */
4146 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4147
4148 /* these are disallowed */
4149 if (params.sta_flags_mask &
4150 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4151 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4152 return -EINVAL;
4153 /* Only TDLS peers can be added */
4154 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4155 return -EINVAL;
4156 /* Can only add if TDLS ... */
4157 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4158 return -EOPNOTSUPP;
4159 /* ... with external setup is supported */
4160 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4161 return -EOPNOTSUPP;
4162 /*
4163 * Older wpa_supplicant versions always mark the TDLS peer
4164 * as authorized, but it shouldn't yet be.
4165 */
4166 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4167 break;
4168 default:
4169 return -EOPNOTSUPP;
4170 }
4171
4172 /* be aware of params.vlan when changing code here */
4173
4174 err = rdev_add_station(rdev, dev, mac_addr, &params);
4175
4176 if (params.vlan)
4177 dev_put(params.vlan);
4178 return err;
4179 }
4180
4181 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4182 {
4183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4184 struct net_device *dev = info->user_ptr[1];
4185 u8 *mac_addr = NULL;
4186
4187 if (info->attrs[NL80211_ATTR_MAC])
4188 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4189
4190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4191 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4192 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4193 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4194 return -EINVAL;
4195
4196 if (!rdev->ops->del_station)
4197 return -EOPNOTSUPP;
4198
4199 return rdev_del_station(rdev, dev, mac_addr);
4200 }
4201
4202 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4203 int flags, struct net_device *dev,
4204 u8 *dst, u8 *next_hop,
4205 struct mpath_info *pinfo)
4206 {
4207 void *hdr;
4208 struct nlattr *pinfoattr;
4209
4210 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4211 if (!hdr)
4212 return -1;
4213
4214 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4216 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4217 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4218 goto nla_put_failure;
4219
4220 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4221 if (!pinfoattr)
4222 goto nla_put_failure;
4223 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4224 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4225 pinfo->frame_qlen))
4226 goto nla_put_failure;
4227 if (((pinfo->filled & MPATH_INFO_SN) &&
4228 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4229 ((pinfo->filled & MPATH_INFO_METRIC) &&
4230 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4231 pinfo->metric)) ||
4232 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4233 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4234 pinfo->exptime)) ||
4235 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4236 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4237 pinfo->flags)) ||
4238 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4239 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4240 pinfo->discovery_timeout)) ||
4241 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4242 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4243 pinfo->discovery_retries)))
4244 goto nla_put_failure;
4245
4246 nla_nest_end(msg, pinfoattr);
4247
4248 return genlmsg_end(msg, hdr);
4249
4250 nla_put_failure:
4251 genlmsg_cancel(msg, hdr);
4252 return -EMSGSIZE;
4253 }
4254
4255 static int nl80211_dump_mpath(struct sk_buff *skb,
4256 struct netlink_callback *cb)
4257 {
4258 struct mpath_info pinfo;
4259 struct cfg80211_registered_device *dev;
4260 struct wireless_dev *wdev;
4261 u8 dst[ETH_ALEN];
4262 u8 next_hop[ETH_ALEN];
4263 int path_idx = cb->args[2];
4264 int err;
4265
4266 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4267 if (err)
4268 return err;
4269
4270 if (!dev->ops->dump_mpath) {
4271 err = -EOPNOTSUPP;
4272 goto out_err;
4273 }
4274
4275 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4276 err = -EOPNOTSUPP;
4277 goto out_err;
4278 }
4279
4280 while (1) {
4281 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4282 next_hop, &pinfo);
4283 if (err == -ENOENT)
4284 break;
4285 if (err)
4286 goto out_err;
4287
4288 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4289 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4290 wdev->netdev, dst, next_hop,
4291 &pinfo) < 0)
4292 goto out;
4293
4294 path_idx++;
4295 }
4296
4297
4298 out:
4299 cb->args[2] = path_idx;
4300 err = skb->len;
4301 out_err:
4302 nl80211_finish_wdev_dump(dev);
4303 return err;
4304 }
4305
4306 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4307 {
4308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309 int err;
4310 struct net_device *dev = info->user_ptr[1];
4311 struct mpath_info pinfo;
4312 struct sk_buff *msg;
4313 u8 *dst = NULL;
4314 u8 next_hop[ETH_ALEN];
4315
4316 memset(&pinfo, 0, sizeof(pinfo));
4317
4318 if (!info->attrs[NL80211_ATTR_MAC])
4319 return -EINVAL;
4320
4321 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4322
4323 if (!rdev->ops->get_mpath)
4324 return -EOPNOTSUPP;
4325
4326 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4327 return -EOPNOTSUPP;
4328
4329 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4330 if (err)
4331 return err;
4332
4333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4334 if (!msg)
4335 return -ENOMEM;
4336
4337 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4338 dev, dst, next_hop, &pinfo) < 0) {
4339 nlmsg_free(msg);
4340 return -ENOBUFS;
4341 }
4342
4343 return genlmsg_reply(msg, info);
4344 }
4345
4346 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4347 {
4348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4349 struct net_device *dev = info->user_ptr[1];
4350 u8 *dst = NULL;
4351 u8 *next_hop = NULL;
4352
4353 if (!info->attrs[NL80211_ATTR_MAC])
4354 return -EINVAL;
4355
4356 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4357 return -EINVAL;
4358
4359 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4361
4362 if (!rdev->ops->change_mpath)
4363 return -EOPNOTSUPP;
4364
4365 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4366 return -EOPNOTSUPP;
4367
4368 return rdev_change_mpath(rdev, dev, dst, next_hop);
4369 }
4370
4371 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4372 {
4373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4374 struct net_device *dev = info->user_ptr[1];
4375 u8 *dst = NULL;
4376 u8 *next_hop = NULL;
4377
4378 if (!info->attrs[NL80211_ATTR_MAC])
4379 return -EINVAL;
4380
4381 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4382 return -EINVAL;
4383
4384 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4385 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4386
4387 if (!rdev->ops->add_mpath)
4388 return -EOPNOTSUPP;
4389
4390 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4391 return -EOPNOTSUPP;
4392
4393 return rdev_add_mpath(rdev, dev, dst, next_hop);
4394 }
4395
4396 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4397 {
4398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4399 struct net_device *dev = info->user_ptr[1];
4400 u8 *dst = NULL;
4401
4402 if (info->attrs[NL80211_ATTR_MAC])
4403 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4404
4405 if (!rdev->ops->del_mpath)
4406 return -EOPNOTSUPP;
4407
4408 return rdev_del_mpath(rdev, dev, dst);
4409 }
4410
4411 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4412 {
4413 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4414 struct net_device *dev = info->user_ptr[1];
4415 struct bss_parameters params;
4416
4417 memset(&params, 0, sizeof(params));
4418 /* default to not changing parameters */
4419 params.use_cts_prot = -1;
4420 params.use_short_preamble = -1;
4421 params.use_short_slot_time = -1;
4422 params.ap_isolate = -1;
4423 params.ht_opmode = -1;
4424 params.p2p_ctwindow = -1;
4425 params.p2p_opp_ps = -1;
4426
4427 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4428 params.use_cts_prot =
4429 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4430 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4431 params.use_short_preamble =
4432 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4433 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4434 params.use_short_slot_time =
4435 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4436 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4437 params.basic_rates =
4438 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4439 params.basic_rates_len =
4440 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4441 }
4442 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4443 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4444 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4445 params.ht_opmode =
4446 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4447
4448 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4449 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4450 return -EINVAL;
4451 params.p2p_ctwindow =
4452 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4453 if (params.p2p_ctwindow < 0)
4454 return -EINVAL;
4455 if (params.p2p_ctwindow != 0 &&
4456 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4457 return -EINVAL;
4458 }
4459
4460 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4461 u8 tmp;
4462
4463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4464 return -EINVAL;
4465 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4466 if (tmp > 1)
4467 return -EINVAL;
4468 params.p2p_opp_ps = tmp;
4469 if (params.p2p_opp_ps &&
4470 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4471 return -EINVAL;
4472 }
4473
4474 if (!rdev->ops->change_bss)
4475 return -EOPNOTSUPP;
4476
4477 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4478 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4479 return -EOPNOTSUPP;
4480
4481 return rdev_change_bss(rdev, dev, &params);
4482 }
4483
4484 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4485 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4486 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4487 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4488 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4489 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4490 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4491 };
4492
4493 static int parse_reg_rule(struct nlattr *tb[],
4494 struct ieee80211_reg_rule *reg_rule)
4495 {
4496 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4497 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4498
4499 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4500 return -EINVAL;
4501 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4502 return -EINVAL;
4503 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4504 return -EINVAL;
4505 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4506 return -EINVAL;
4507 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4508 return -EINVAL;
4509
4510 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4511
4512 freq_range->start_freq_khz =
4513 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4514 freq_range->end_freq_khz =
4515 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4516 freq_range->max_bandwidth_khz =
4517 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4518
4519 power_rule->max_eirp =
4520 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4521
4522 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4523 power_rule->max_antenna_gain =
4524 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4525
4526 return 0;
4527 }
4528
4529 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4530 {
4531 int r;
4532 char *data = NULL;
4533 enum nl80211_user_reg_hint_type user_reg_hint_type;
4534
4535 /*
4536 * You should only get this when cfg80211 hasn't yet initialized
4537 * completely when built-in to the kernel right between the time
4538 * window between nl80211_init() and regulatory_init(), if that is
4539 * even possible.
4540 */
4541 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4542 return -EINPROGRESS;
4543
4544 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4545 return -EINVAL;
4546
4547 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4548
4549 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4550 user_reg_hint_type =
4551 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4552 else
4553 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4554
4555 switch (user_reg_hint_type) {
4556 case NL80211_USER_REG_HINT_USER:
4557 case NL80211_USER_REG_HINT_CELL_BASE:
4558 break;
4559 default:
4560 return -EINVAL;
4561 }
4562
4563 r = regulatory_hint_user(data, user_reg_hint_type);
4564
4565 return r;
4566 }
4567
4568 static int nl80211_get_mesh_config(struct sk_buff *skb,
4569 struct genl_info *info)
4570 {
4571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4572 struct net_device *dev = info->user_ptr[1];
4573 struct wireless_dev *wdev = dev->ieee80211_ptr;
4574 struct mesh_config cur_params;
4575 int err = 0;
4576 void *hdr;
4577 struct nlattr *pinfoattr;
4578 struct sk_buff *msg;
4579
4580 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4581 return -EOPNOTSUPP;
4582
4583 if (!rdev->ops->get_mesh_config)
4584 return -EOPNOTSUPP;
4585
4586 wdev_lock(wdev);
4587 /* If not connected, get default parameters */
4588 if (!wdev->mesh_id_len)
4589 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4590 else
4591 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4592 wdev_unlock(wdev);
4593
4594 if (err)
4595 return err;
4596
4597 /* Draw up a netlink message to send back */
4598 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4599 if (!msg)
4600 return -ENOMEM;
4601 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4602 NL80211_CMD_GET_MESH_CONFIG);
4603 if (!hdr)
4604 goto out;
4605 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4606 if (!pinfoattr)
4607 goto nla_put_failure;
4608 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4609 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4610 cur_params.dot11MeshRetryTimeout) ||
4611 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4612 cur_params.dot11MeshConfirmTimeout) ||
4613 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4614 cur_params.dot11MeshHoldingTimeout) ||
4615 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4616 cur_params.dot11MeshMaxPeerLinks) ||
4617 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4618 cur_params.dot11MeshMaxRetries) ||
4619 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4620 cur_params.dot11MeshTTL) ||
4621 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4622 cur_params.element_ttl) ||
4623 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4624 cur_params.auto_open_plinks) ||
4625 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4626 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4627 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4628 cur_params.dot11MeshHWMPmaxPREQretries) ||
4629 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4630 cur_params.path_refresh_time) ||
4631 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4632 cur_params.min_discovery_timeout) ||
4633 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4634 cur_params.dot11MeshHWMPactivePathTimeout) ||
4635 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4636 cur_params.dot11MeshHWMPpreqMinInterval) ||
4637 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4638 cur_params.dot11MeshHWMPperrMinInterval) ||
4639 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4640 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4641 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4642 cur_params.dot11MeshHWMPRootMode) ||
4643 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4644 cur_params.dot11MeshHWMPRannInterval) ||
4645 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4646 cur_params.dot11MeshGateAnnouncementProtocol) ||
4647 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4648 cur_params.dot11MeshForwarding) ||
4649 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4650 cur_params.rssi_threshold) ||
4651 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4652 cur_params.ht_opmode) ||
4653 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4654 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4655 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4656 cur_params.dot11MeshHWMProotInterval) ||
4657 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4658 cur_params.dot11MeshHWMPconfirmationInterval) ||
4659 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4660 cur_params.power_mode) ||
4661 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4662 cur_params.dot11MeshAwakeWindowDuration) ||
4663 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4664 cur_params.plink_timeout))
4665 goto nla_put_failure;
4666 nla_nest_end(msg, pinfoattr);
4667 genlmsg_end(msg, hdr);
4668 return genlmsg_reply(msg, info);
4669
4670 nla_put_failure:
4671 genlmsg_cancel(msg, hdr);
4672 out:
4673 nlmsg_free(msg);
4674 return -ENOBUFS;
4675 }
4676
4677 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4678 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4679 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4680 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4681 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4682 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4683 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4684 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4685 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4686 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4687 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4688 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4689 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4690 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4691 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4692 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4693 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4694 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4695 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4696 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4697 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4698 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4699 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4700 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4701 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4702 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4703 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4704 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4705 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4706 };
4707
4708 static const struct nla_policy
4709 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4710 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4711 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4712 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4713 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4714 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4715 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4716 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4717 .len = IEEE80211_MAX_DATA_LEN },
4718 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4719 };
4720
4721 static int nl80211_parse_mesh_config(struct genl_info *info,
4722 struct mesh_config *cfg,
4723 u32 *mask_out)
4724 {
4725 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4726 u32 mask = 0;
4727
4728 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4729 do { \
4730 if (tb[attr]) { \
4731 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4732 return -EINVAL; \
4733 cfg->param = fn(tb[attr]); \
4734 mask |= (1 << (attr - 1)); \
4735 } \
4736 } while (0)
4737
4738
4739 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4740 return -EINVAL;
4741 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4742 info->attrs[NL80211_ATTR_MESH_CONFIG],
4743 nl80211_meshconf_params_policy))
4744 return -EINVAL;
4745
4746 /* This makes sure that there aren't more than 32 mesh config
4747 * parameters (otherwise our bitfield scheme would not work.) */
4748 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4749
4750 /* Fill in the params struct */
4751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4752 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4753 nla_get_u16);
4754 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4755 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4756 nla_get_u16);
4757 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4758 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4759 nla_get_u16);
4760 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4761 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4762 nla_get_u16);
4763 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4764 mask, NL80211_MESHCONF_MAX_RETRIES,
4765 nla_get_u8);
4766 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4767 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4768 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4769 mask, NL80211_MESHCONF_ELEMENT_TTL,
4770 nla_get_u8);
4771 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4772 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4773 nla_get_u8);
4774 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4775 1, 255, mask,
4776 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4777 nla_get_u32);
4778 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4779 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4780 nla_get_u8);
4781 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4782 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4783 nla_get_u32);
4784 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4785 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4786 nla_get_u16);
4787 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4788 1, 65535, mask,
4789 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4790 nla_get_u32);
4791 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4792 1, 65535, mask,
4793 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4794 nla_get_u16);
4795 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4796 1, 65535, mask,
4797 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4798 nla_get_u16);
4799 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4800 dot11MeshHWMPnetDiameterTraversalTime,
4801 1, 65535, mask,
4802 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4803 nla_get_u16);
4804 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4805 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4806 nla_get_u8);
4807 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4808 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4809 nla_get_u16);
4810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4811 dot11MeshGateAnnouncementProtocol, 0, 1,
4812 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4813 nla_get_u8);
4814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4815 mask, NL80211_MESHCONF_FORWARDING,
4816 nla_get_u8);
4817 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4818 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4819 nla_get_s32);
4820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4821 mask, NL80211_MESHCONF_HT_OPMODE,
4822 nla_get_u16);
4823 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4824 1, 65535, mask,
4825 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4826 nla_get_u32);
4827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4828 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4829 nla_get_u16);
4830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4831 dot11MeshHWMPconfirmationInterval,
4832 1, 65535, mask,
4833 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4834 nla_get_u16);
4835 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4836 NL80211_MESH_POWER_ACTIVE,
4837 NL80211_MESH_POWER_MAX,
4838 mask, NL80211_MESHCONF_POWER_MODE,
4839 nla_get_u32);
4840 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4841 0, 65535, mask,
4842 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4844 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4845 nla_get_u32);
4846 if (mask_out)
4847 *mask_out = mask;
4848
4849 return 0;
4850
4851 #undef FILL_IN_MESH_PARAM_IF_SET
4852 }
4853
4854 static int nl80211_parse_mesh_setup(struct genl_info *info,
4855 struct mesh_setup *setup)
4856 {
4857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4858 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4859
4860 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4861 return -EINVAL;
4862 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4863 info->attrs[NL80211_ATTR_MESH_SETUP],
4864 nl80211_mesh_setup_params_policy))
4865 return -EINVAL;
4866
4867 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4868 setup->sync_method =
4869 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4870 IEEE80211_SYNC_METHOD_VENDOR :
4871 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4872
4873 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4874 setup->path_sel_proto =
4875 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4876 IEEE80211_PATH_PROTOCOL_VENDOR :
4877 IEEE80211_PATH_PROTOCOL_HWMP;
4878
4879 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4880 setup->path_metric =
4881 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4882 IEEE80211_PATH_METRIC_VENDOR :
4883 IEEE80211_PATH_METRIC_AIRTIME;
4884
4885
4886 if (tb[NL80211_MESH_SETUP_IE]) {
4887 struct nlattr *ieattr =
4888 tb[NL80211_MESH_SETUP_IE];
4889 if (!is_valid_ie_attr(ieattr))
4890 return -EINVAL;
4891 setup->ie = nla_data(ieattr);
4892 setup->ie_len = nla_len(ieattr);
4893 }
4894 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4895 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4896 return -EINVAL;
4897 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4898 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4899 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4900 if (setup->is_secure)
4901 setup->user_mpm = true;
4902
4903 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4904 if (!setup->user_mpm)
4905 return -EINVAL;
4906 setup->auth_id =
4907 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4908 }
4909
4910 return 0;
4911 }
4912
4913 static int nl80211_update_mesh_config(struct sk_buff *skb,
4914 struct genl_info *info)
4915 {
4916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4917 struct net_device *dev = info->user_ptr[1];
4918 struct wireless_dev *wdev = dev->ieee80211_ptr;
4919 struct mesh_config cfg;
4920 u32 mask;
4921 int err;
4922
4923 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4924 return -EOPNOTSUPP;
4925
4926 if (!rdev->ops->update_mesh_config)
4927 return -EOPNOTSUPP;
4928
4929 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4930 if (err)
4931 return err;
4932
4933 wdev_lock(wdev);
4934 if (!wdev->mesh_id_len)
4935 err = -ENOLINK;
4936
4937 if (!err)
4938 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4939
4940 wdev_unlock(wdev);
4941
4942 return err;
4943 }
4944
4945 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4946 {
4947 const struct ieee80211_regdomain *regdom;
4948 struct sk_buff *msg;
4949 void *hdr = NULL;
4950 struct nlattr *nl_reg_rules;
4951 unsigned int i;
4952
4953 if (!cfg80211_regdomain)
4954 return -EINVAL;
4955
4956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4957 if (!msg)
4958 return -ENOBUFS;
4959
4960 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4961 NL80211_CMD_GET_REG);
4962 if (!hdr)
4963 goto put_failure;
4964
4965 if (reg_last_request_cell_base() &&
4966 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4967 NL80211_USER_REG_HINT_CELL_BASE))
4968 goto nla_put_failure;
4969
4970 rcu_read_lock();
4971 regdom = rcu_dereference(cfg80211_regdomain);
4972
4973 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4974 (regdom->dfs_region &&
4975 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4976 goto nla_put_failure_rcu;
4977
4978 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4979 if (!nl_reg_rules)
4980 goto nla_put_failure_rcu;
4981
4982 for (i = 0; i < regdom->n_reg_rules; i++) {
4983 struct nlattr *nl_reg_rule;
4984 const struct ieee80211_reg_rule *reg_rule;
4985 const struct ieee80211_freq_range *freq_range;
4986 const struct ieee80211_power_rule *power_rule;
4987
4988 reg_rule = &regdom->reg_rules[i];
4989 freq_range = &reg_rule->freq_range;
4990 power_rule = &reg_rule->power_rule;
4991
4992 nl_reg_rule = nla_nest_start(msg, i);
4993 if (!nl_reg_rule)
4994 goto nla_put_failure_rcu;
4995
4996 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4997 reg_rule->flags) ||
4998 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4999 freq_range->start_freq_khz) ||
5000 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5001 freq_range->end_freq_khz) ||
5002 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5003 freq_range->max_bandwidth_khz) ||
5004 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5005 power_rule->max_antenna_gain) ||
5006 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5007 power_rule->max_eirp))
5008 goto nla_put_failure_rcu;
5009
5010 nla_nest_end(msg, nl_reg_rule);
5011 }
5012 rcu_read_unlock();
5013
5014 nla_nest_end(msg, nl_reg_rules);
5015
5016 genlmsg_end(msg, hdr);
5017 return genlmsg_reply(msg, info);
5018
5019 nla_put_failure_rcu:
5020 rcu_read_unlock();
5021 nla_put_failure:
5022 genlmsg_cancel(msg, hdr);
5023 put_failure:
5024 nlmsg_free(msg);
5025 return -EMSGSIZE;
5026 }
5027
5028 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5029 {
5030 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5031 struct nlattr *nl_reg_rule;
5032 char *alpha2 = NULL;
5033 int rem_reg_rules = 0, r = 0;
5034 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5035 u8 dfs_region = 0;
5036 struct ieee80211_regdomain *rd = NULL;
5037
5038 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5039 return -EINVAL;
5040
5041 if (!info->attrs[NL80211_ATTR_REG_RULES])
5042 return -EINVAL;
5043
5044 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5045
5046 if (info->attrs[NL80211_ATTR_DFS_REGION])
5047 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5048
5049 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5050 rem_reg_rules) {
5051 num_rules++;
5052 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5053 return -EINVAL;
5054 }
5055
5056 size_of_regd = sizeof(struct ieee80211_regdomain) +
5057 num_rules * sizeof(struct ieee80211_reg_rule);
5058
5059 rd = kzalloc(size_of_regd, GFP_KERNEL);
5060 if (!rd)
5061 return -ENOMEM;
5062
5063 rd->n_reg_rules = num_rules;
5064 rd->alpha2[0] = alpha2[0];
5065 rd->alpha2[1] = alpha2[1];
5066
5067 /*
5068 * Disable DFS master mode if the DFS region was
5069 * not supported or known on this kernel.
5070 */
5071 if (reg_supported_dfs_region(dfs_region))
5072 rd->dfs_region = dfs_region;
5073
5074 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5075 rem_reg_rules) {
5076 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5077 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5078 reg_rule_policy);
5079 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5080 if (r)
5081 goto bad_reg;
5082
5083 rule_idx++;
5084
5085 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5086 r = -EINVAL;
5087 goto bad_reg;
5088 }
5089 }
5090
5091 r = set_regdom(rd);
5092 /* set_regdom took ownership */
5093 rd = NULL;
5094
5095 bad_reg:
5096 kfree(rd);
5097 return r;
5098 }
5099
5100 static int validate_scan_freqs(struct nlattr *freqs)
5101 {
5102 struct nlattr *attr1, *attr2;
5103 int n_channels = 0, tmp1, tmp2;
5104
5105 nla_for_each_nested(attr1, freqs, tmp1) {
5106 n_channels++;
5107 /*
5108 * Some hardware has a limited channel list for
5109 * scanning, and it is pretty much nonsensical
5110 * to scan for a channel twice, so disallow that
5111 * and don't require drivers to check that the
5112 * channel list they get isn't longer than what
5113 * they can scan, as long as they can scan all
5114 * the channels they registered at once.
5115 */
5116 nla_for_each_nested(attr2, freqs, tmp2)
5117 if (attr1 != attr2 &&
5118 nla_get_u32(attr1) == nla_get_u32(attr2))
5119 return 0;
5120 }
5121
5122 return n_channels;
5123 }
5124
5125 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5126 {
5127 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5128 struct wireless_dev *wdev = info->user_ptr[1];
5129 struct cfg80211_scan_request *request;
5130 struct nlattr *attr;
5131 struct wiphy *wiphy;
5132 int err, tmp, n_ssids = 0, n_channels, i;
5133 size_t ie_len;
5134
5135 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5136 return -EINVAL;
5137
5138 wiphy = &rdev->wiphy;
5139
5140 if (!rdev->ops->scan)
5141 return -EOPNOTSUPP;
5142
5143 if (rdev->scan_req) {
5144 err = -EBUSY;
5145 goto unlock;
5146 }
5147
5148 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5149 n_channels = validate_scan_freqs(
5150 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5151 if (!n_channels) {
5152 err = -EINVAL;
5153 goto unlock;
5154 }
5155 } else {
5156 enum ieee80211_band band;
5157 n_channels = 0;
5158
5159 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5160 if (wiphy->bands[band])
5161 n_channels += wiphy->bands[band]->n_channels;
5162 }
5163
5164 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5165 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5166 n_ssids++;
5167
5168 if (n_ssids > wiphy->max_scan_ssids) {
5169 err = -EINVAL;
5170 goto unlock;
5171 }
5172
5173 if (info->attrs[NL80211_ATTR_IE])
5174 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5175 else
5176 ie_len = 0;
5177
5178 if (ie_len > wiphy->max_scan_ie_len) {
5179 err = -EINVAL;
5180 goto unlock;
5181 }
5182
5183 request = kzalloc(sizeof(*request)
5184 + sizeof(*request->ssids) * n_ssids
5185 + sizeof(*request->channels) * n_channels
5186 + ie_len, GFP_KERNEL);
5187 if (!request) {
5188 err = -ENOMEM;
5189 goto unlock;
5190 }
5191
5192 if (n_ssids)
5193 request->ssids = (void *)&request->channels[n_channels];
5194 request->n_ssids = n_ssids;
5195 if (ie_len) {
5196 if (request->ssids)
5197 request->ie = (void *)(request->ssids + n_ssids);
5198 else
5199 request->ie = (void *)(request->channels + n_channels);
5200 }
5201
5202 i = 0;
5203 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5204 /* user specified, bail out if channel not found */
5205 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5206 struct ieee80211_channel *chan;
5207
5208 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5209
5210 if (!chan) {
5211 err = -EINVAL;
5212 goto out_free;
5213 }
5214
5215 /* ignore disabled channels */
5216 if (chan->flags & IEEE80211_CHAN_DISABLED)
5217 continue;
5218
5219 request->channels[i] = chan;
5220 i++;
5221 }
5222 } else {
5223 enum ieee80211_band band;
5224
5225 /* all channels */
5226 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5227 int j;
5228 if (!wiphy->bands[band])
5229 continue;
5230 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5231 struct ieee80211_channel *chan;
5232
5233 chan = &wiphy->bands[band]->channels[j];
5234
5235 if (chan->flags & IEEE80211_CHAN_DISABLED)
5236 continue;
5237
5238 request->channels[i] = chan;
5239 i++;
5240 }
5241 }
5242 }
5243
5244 if (!i) {
5245 err = -EINVAL;
5246 goto out_free;
5247 }
5248
5249 request->n_channels = i;
5250
5251 i = 0;
5252 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5253 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5254 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5255 err = -EINVAL;
5256 goto out_free;
5257 }
5258 request->ssids[i].ssid_len = nla_len(attr);
5259 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5260 i++;
5261 }
5262 }
5263
5264 if (info->attrs[NL80211_ATTR_IE]) {
5265 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5266 memcpy((void *)request->ie,
5267 nla_data(info->attrs[NL80211_ATTR_IE]),
5268 request->ie_len);
5269 }
5270
5271 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5272 if (wiphy->bands[i])
5273 request->rates[i] =
5274 (1 << wiphy->bands[i]->n_bitrates) - 1;
5275
5276 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5277 nla_for_each_nested(attr,
5278 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5279 tmp) {
5280 enum ieee80211_band band = nla_type(attr);
5281
5282 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5283 err = -EINVAL;
5284 goto out_free;
5285 }
5286 err = ieee80211_get_ratemask(wiphy->bands[band],
5287 nla_data(attr),
5288 nla_len(attr),
5289 &request->rates[band]);
5290 if (err)
5291 goto out_free;
5292 }
5293 }
5294
5295 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5296 request->flags = nla_get_u32(
5297 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5298 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5299 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5300 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5301 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5302 err = -EOPNOTSUPP;
5303 goto out_free;
5304 }
5305 }
5306
5307 request->no_cck =
5308 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5309
5310 request->wdev = wdev;
5311 request->wiphy = &rdev->wiphy;
5312 request->scan_start = jiffies;
5313
5314 rdev->scan_req = request;
5315 err = rdev_scan(rdev, request);
5316
5317 if (!err) {
5318 nl80211_send_scan_start(rdev, wdev);
5319 if (wdev->netdev)
5320 dev_hold(wdev->netdev);
5321 } else {
5322 out_free:
5323 rdev->scan_req = NULL;
5324 kfree(request);
5325 }
5326
5327 unlock:
5328 return err;
5329 }
5330
5331 static int nl80211_start_sched_scan(struct sk_buff *skb,
5332 struct genl_info *info)
5333 {
5334 struct cfg80211_sched_scan_request *request;
5335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5336 struct net_device *dev = info->user_ptr[1];
5337 struct nlattr *attr;
5338 struct wiphy *wiphy;
5339 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5340 u32 interval;
5341 enum ieee80211_band band;
5342 size_t ie_len;
5343 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5344
5345 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5346 !rdev->ops->sched_scan_start)
5347 return -EOPNOTSUPP;
5348
5349 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5350 return -EINVAL;
5351
5352 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5353 return -EINVAL;
5354
5355 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5356 if (interval == 0)
5357 return -EINVAL;
5358
5359 wiphy = &rdev->wiphy;
5360
5361 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5362 n_channels = validate_scan_freqs(
5363 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5364 if (!n_channels)
5365 return -EINVAL;
5366 } else {
5367 n_channels = 0;
5368
5369 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5370 if (wiphy->bands[band])
5371 n_channels += wiphy->bands[band]->n_channels;
5372 }
5373
5374 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5375 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5376 tmp)
5377 n_ssids++;
5378
5379 if (n_ssids > wiphy->max_sched_scan_ssids)
5380 return -EINVAL;
5381
5382 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5383 nla_for_each_nested(attr,
5384 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5385 tmp)
5386 n_match_sets++;
5387
5388 if (n_match_sets > wiphy->max_match_sets)
5389 return -EINVAL;
5390
5391 if (info->attrs[NL80211_ATTR_IE])
5392 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5393 else
5394 ie_len = 0;
5395
5396 if (ie_len > wiphy->max_sched_scan_ie_len)
5397 return -EINVAL;
5398
5399 if (rdev->sched_scan_req) {
5400 err = -EINPROGRESS;
5401 goto out;
5402 }
5403
5404 request = kzalloc(sizeof(*request)
5405 + sizeof(*request->ssids) * n_ssids
5406 + sizeof(*request->match_sets) * n_match_sets
5407 + sizeof(*request->channels) * n_channels
5408 + ie_len, GFP_KERNEL);
5409 if (!request) {
5410 err = -ENOMEM;
5411 goto out;
5412 }
5413
5414 if (n_ssids)
5415 request->ssids = (void *)&request->channels[n_channels];
5416 request->n_ssids = n_ssids;
5417 if (ie_len) {
5418 if (request->ssids)
5419 request->ie = (void *)(request->ssids + n_ssids);
5420 else
5421 request->ie = (void *)(request->channels + n_channels);
5422 }
5423
5424 if (n_match_sets) {
5425 if (request->ie)
5426 request->match_sets = (void *)(request->ie + ie_len);
5427 else if (request->ssids)
5428 request->match_sets =
5429 (void *)(request->ssids + n_ssids);
5430 else
5431 request->match_sets =
5432 (void *)(request->channels + n_channels);
5433 }
5434 request->n_match_sets = n_match_sets;
5435
5436 i = 0;
5437 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5438 /* user specified, bail out if channel not found */
5439 nla_for_each_nested(attr,
5440 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5441 tmp) {
5442 struct ieee80211_channel *chan;
5443
5444 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5445
5446 if (!chan) {
5447 err = -EINVAL;
5448 goto out_free;
5449 }
5450
5451 /* ignore disabled channels */
5452 if (chan->flags & IEEE80211_CHAN_DISABLED)
5453 continue;
5454
5455 request->channels[i] = chan;
5456 i++;
5457 }
5458 } else {
5459 /* all channels */
5460 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5461 int j;
5462 if (!wiphy->bands[band])
5463 continue;
5464 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5465 struct ieee80211_channel *chan;
5466
5467 chan = &wiphy->bands[band]->channels[j];
5468
5469 if (chan->flags & IEEE80211_CHAN_DISABLED)
5470 continue;
5471
5472 request->channels[i] = chan;
5473 i++;
5474 }
5475 }
5476 }
5477
5478 if (!i) {
5479 err = -EINVAL;
5480 goto out_free;
5481 }
5482
5483 request->n_channels = i;
5484
5485 i = 0;
5486 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5487 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5488 tmp) {
5489 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5490 err = -EINVAL;
5491 goto out_free;
5492 }
5493 request->ssids[i].ssid_len = nla_len(attr);
5494 memcpy(request->ssids[i].ssid, nla_data(attr),
5495 nla_len(attr));
5496 i++;
5497 }
5498 }
5499
5500 i = 0;
5501 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5502 nla_for_each_nested(attr,
5503 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5504 tmp) {
5505 struct nlattr *ssid, *rssi;
5506
5507 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5508 nla_data(attr), nla_len(attr),
5509 nl80211_match_policy);
5510 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5511 if (ssid) {
5512 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5513 err = -EINVAL;
5514 goto out_free;
5515 }
5516 memcpy(request->match_sets[i].ssid.ssid,
5517 nla_data(ssid), nla_len(ssid));
5518 request->match_sets[i].ssid.ssid_len =
5519 nla_len(ssid);
5520 }
5521 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5522 if (rssi)
5523 request->rssi_thold = nla_get_u32(rssi);
5524 else
5525 request->rssi_thold =
5526 NL80211_SCAN_RSSI_THOLD_OFF;
5527 i++;
5528 }
5529 }
5530
5531 if (info->attrs[NL80211_ATTR_IE]) {
5532 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5533 memcpy((void *)request->ie,
5534 nla_data(info->attrs[NL80211_ATTR_IE]),
5535 request->ie_len);
5536 }
5537
5538 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5539 request->flags = nla_get_u32(
5540 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5541 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5542 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5543 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5544 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5545 err = -EOPNOTSUPP;
5546 goto out_free;
5547 }
5548 }
5549
5550 request->dev = dev;
5551 request->wiphy = &rdev->wiphy;
5552 request->interval = interval;
5553 request->scan_start = jiffies;
5554
5555 err = rdev_sched_scan_start(rdev, dev, request);
5556 if (!err) {
5557 rdev->sched_scan_req = request;
5558 nl80211_send_sched_scan(rdev, dev,
5559 NL80211_CMD_START_SCHED_SCAN);
5560 goto out;
5561 }
5562
5563 out_free:
5564 kfree(request);
5565 out:
5566 return err;
5567 }
5568
5569 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5570 struct genl_info *info)
5571 {
5572 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5573
5574 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5575 !rdev->ops->sched_scan_stop)
5576 return -EOPNOTSUPP;
5577
5578 return __cfg80211_stop_sched_scan(rdev, false);
5579 }
5580
5581 static int nl80211_start_radar_detection(struct sk_buff *skb,
5582 struct genl_info *info)
5583 {
5584 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5585 struct net_device *dev = info->user_ptr[1];
5586 struct wireless_dev *wdev = dev->ieee80211_ptr;
5587 struct cfg80211_chan_def chandef;
5588 int err;
5589
5590 err = nl80211_parse_chandef(rdev, info, &chandef);
5591 if (err)
5592 return err;
5593
5594 if (wdev->cac_started)
5595 return -EBUSY;
5596
5597 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5598 if (err < 0)
5599 return err;
5600
5601 if (err == 0)
5602 return -EINVAL;
5603
5604 if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5605 return -EINVAL;
5606
5607 if (!rdev->ops->start_radar_detection)
5608 return -EOPNOTSUPP;
5609
5610 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5611 chandef.chan, CHAN_MODE_SHARED,
5612 BIT(chandef.width));
5613 if (err)
5614 return err;
5615
5616 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5617 if (!err) {
5618 wdev->channel = chandef.chan;
5619 wdev->cac_started = true;
5620 wdev->cac_start_time = jiffies;
5621 }
5622 return err;
5623 }
5624
5625 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5626 {
5627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5628 struct net_device *dev = info->user_ptr[1];
5629 struct wireless_dev *wdev = dev->ieee80211_ptr;
5630 struct cfg80211_csa_settings params;
5631 /* csa_attrs is defined static to avoid waste of stack size - this
5632 * function is called under RTNL lock, so this should not be a problem.
5633 */
5634 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5635 u8 radar_detect_width = 0;
5636 int err;
5637
5638 if (!rdev->ops->channel_switch ||
5639 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5640 return -EOPNOTSUPP;
5641
5642 /* may add IBSS support later */
5643 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5644 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5645 return -EOPNOTSUPP;
5646
5647 memset(&params, 0, sizeof(params));
5648
5649 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5650 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5651 return -EINVAL;
5652
5653 /* only important for AP, IBSS and mesh create IEs internally */
5654 if (!info->attrs[NL80211_ATTR_CSA_IES])
5655 return -EINVAL;
5656
5657 /* useless if AP is not running */
5658 if (!wdev->beacon_interval)
5659 return -EINVAL;
5660
5661 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5662
5663 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5664 if (err)
5665 return err;
5666
5667 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5668 info->attrs[NL80211_ATTR_CSA_IES],
5669 nl80211_policy);
5670 if (err)
5671 return err;
5672
5673 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5674 if (err)
5675 return err;
5676
5677 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5678 return -EINVAL;
5679
5680 params.counter_offset_beacon =
5681 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5682 if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5683 return -EINVAL;
5684
5685 /* sanity check - counters should be the same */
5686 if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5687 params.count)
5688 return -EINVAL;
5689
5690 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5691 params.counter_offset_presp =
5692 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5693 if (params.counter_offset_presp >=
5694 params.beacon_csa.probe_resp_len)
5695 return -EINVAL;
5696
5697 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5698 params.count)
5699 return -EINVAL;
5700 }
5701
5702 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5703 if (err)
5704 return err;
5705
5706 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5707 return -EINVAL;
5708
5709 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
5710 if (err < 0) {
5711 return err;
5712 } else if (err) {
5713 radar_detect_width = BIT(params.chandef.width);
5714 params.radar_required = true;
5715 }
5716
5717 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5718 params.chandef.chan,
5719 CHAN_MODE_SHARED,
5720 radar_detect_width);
5721 if (err)
5722 return err;
5723
5724 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5725 params.block_tx = true;
5726
5727 return rdev_channel_switch(rdev, dev, &params);
5728 }
5729
5730 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5731 u32 seq, int flags,
5732 struct cfg80211_registered_device *rdev,
5733 struct wireless_dev *wdev,
5734 struct cfg80211_internal_bss *intbss)
5735 {
5736 struct cfg80211_bss *res = &intbss->pub;
5737 const struct cfg80211_bss_ies *ies;
5738 void *hdr;
5739 struct nlattr *bss;
5740 bool tsf = false;
5741
5742 ASSERT_WDEV_LOCK(wdev);
5743
5744 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5745 NL80211_CMD_NEW_SCAN_RESULTS);
5746 if (!hdr)
5747 return -1;
5748
5749 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5750
5751 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5752 goto nla_put_failure;
5753 if (wdev->netdev &&
5754 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5755 goto nla_put_failure;
5756 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5757 goto nla_put_failure;
5758
5759 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5760 if (!bss)
5761 goto nla_put_failure;
5762 if ((!is_zero_ether_addr(res->bssid) &&
5763 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5764 goto nla_put_failure;
5765
5766 rcu_read_lock();
5767 ies = rcu_dereference(res->ies);
5768 if (ies) {
5769 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5770 goto fail_unlock_rcu;
5771 tsf = true;
5772 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5773 ies->len, ies->data))
5774 goto fail_unlock_rcu;
5775 }
5776 ies = rcu_dereference(res->beacon_ies);
5777 if (ies) {
5778 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5779 goto fail_unlock_rcu;
5780 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5781 ies->len, ies->data))
5782 goto fail_unlock_rcu;
5783 }
5784 rcu_read_unlock();
5785
5786 if (res->beacon_interval &&
5787 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5788 goto nla_put_failure;
5789 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5790 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5791 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5792 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5793 jiffies_to_msecs(jiffies - intbss->ts)))
5794 goto nla_put_failure;
5795
5796 switch (rdev->wiphy.signal_type) {
5797 case CFG80211_SIGNAL_TYPE_MBM:
5798 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5799 goto nla_put_failure;
5800 break;
5801 case CFG80211_SIGNAL_TYPE_UNSPEC:
5802 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5803 goto nla_put_failure;
5804 break;
5805 default:
5806 break;
5807 }
5808
5809 switch (wdev->iftype) {
5810 case NL80211_IFTYPE_P2P_CLIENT:
5811 case NL80211_IFTYPE_STATION:
5812 if (intbss == wdev->current_bss &&
5813 nla_put_u32(msg, NL80211_BSS_STATUS,
5814 NL80211_BSS_STATUS_ASSOCIATED))
5815 goto nla_put_failure;
5816 break;
5817 case NL80211_IFTYPE_ADHOC:
5818 if (intbss == wdev->current_bss &&
5819 nla_put_u32(msg, NL80211_BSS_STATUS,
5820 NL80211_BSS_STATUS_IBSS_JOINED))
5821 goto nla_put_failure;
5822 break;
5823 default:
5824 break;
5825 }
5826
5827 nla_nest_end(msg, bss);
5828
5829 return genlmsg_end(msg, hdr);
5830
5831 fail_unlock_rcu:
5832 rcu_read_unlock();
5833 nla_put_failure:
5834 genlmsg_cancel(msg, hdr);
5835 return -EMSGSIZE;
5836 }
5837
5838 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5839 {
5840 struct cfg80211_registered_device *rdev;
5841 struct cfg80211_internal_bss *scan;
5842 struct wireless_dev *wdev;
5843 int start = cb->args[2], idx = 0;
5844 int err;
5845
5846 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5847 if (err)
5848 return err;
5849
5850 wdev_lock(wdev);
5851 spin_lock_bh(&rdev->bss_lock);
5852 cfg80211_bss_expire(rdev);
5853
5854 cb->seq = rdev->bss_generation;
5855
5856 list_for_each_entry(scan, &rdev->bss_list, list) {
5857 if (++idx <= start)
5858 continue;
5859 if (nl80211_send_bss(skb, cb,
5860 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5861 rdev, wdev, scan) < 0) {
5862 idx--;
5863 break;
5864 }
5865 }
5866
5867 spin_unlock_bh(&rdev->bss_lock);
5868 wdev_unlock(wdev);
5869
5870 cb->args[2] = idx;
5871 nl80211_finish_wdev_dump(rdev);
5872
5873 return skb->len;
5874 }
5875
5876 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5877 int flags, struct net_device *dev,
5878 struct survey_info *survey)
5879 {
5880 void *hdr;
5881 struct nlattr *infoattr;
5882
5883 hdr = nl80211hdr_put(msg, portid, seq, flags,
5884 NL80211_CMD_NEW_SURVEY_RESULTS);
5885 if (!hdr)
5886 return -ENOMEM;
5887
5888 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5889 goto nla_put_failure;
5890
5891 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5892 if (!infoattr)
5893 goto nla_put_failure;
5894
5895 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5896 survey->channel->center_freq))
5897 goto nla_put_failure;
5898
5899 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5900 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5901 goto nla_put_failure;
5902 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5903 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5904 goto nla_put_failure;
5905 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5906 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5907 survey->channel_time))
5908 goto nla_put_failure;
5909 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5910 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5911 survey->channel_time_busy))
5912 goto nla_put_failure;
5913 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5914 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5915 survey->channel_time_ext_busy))
5916 goto nla_put_failure;
5917 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5918 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5919 survey->channel_time_rx))
5920 goto nla_put_failure;
5921 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5922 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5923 survey->channel_time_tx))
5924 goto nla_put_failure;
5925
5926 nla_nest_end(msg, infoattr);
5927
5928 return genlmsg_end(msg, hdr);
5929
5930 nla_put_failure:
5931 genlmsg_cancel(msg, hdr);
5932 return -EMSGSIZE;
5933 }
5934
5935 static int nl80211_dump_survey(struct sk_buff *skb,
5936 struct netlink_callback *cb)
5937 {
5938 struct survey_info survey;
5939 struct cfg80211_registered_device *dev;
5940 struct wireless_dev *wdev;
5941 int survey_idx = cb->args[2];
5942 int res;
5943
5944 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5945 if (res)
5946 return res;
5947
5948 if (!wdev->netdev) {
5949 res = -EINVAL;
5950 goto out_err;
5951 }
5952
5953 if (!dev->ops->dump_survey) {
5954 res = -EOPNOTSUPP;
5955 goto out_err;
5956 }
5957
5958 while (1) {
5959 struct ieee80211_channel *chan;
5960
5961 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5962 if (res == -ENOENT)
5963 break;
5964 if (res)
5965 goto out_err;
5966
5967 /* Survey without a channel doesn't make sense */
5968 if (!survey.channel) {
5969 res = -EINVAL;
5970 goto out;
5971 }
5972
5973 chan = ieee80211_get_channel(&dev->wiphy,
5974 survey.channel->center_freq);
5975 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5976 survey_idx++;
5977 continue;
5978 }
5979
5980 if (nl80211_send_survey(skb,
5981 NETLINK_CB(cb->skb).portid,
5982 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5983 wdev->netdev, &survey) < 0)
5984 goto out;
5985 survey_idx++;
5986 }
5987
5988 out:
5989 cb->args[2] = survey_idx;
5990 res = skb->len;
5991 out_err:
5992 nl80211_finish_wdev_dump(dev);
5993 return res;
5994 }
5995
5996 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5997 {
5998 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5999 NL80211_WPA_VERSION_2));
6000 }
6001
6002 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6003 {
6004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6005 struct net_device *dev = info->user_ptr[1];
6006 struct ieee80211_channel *chan;
6007 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6008 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6009 enum nl80211_auth_type auth_type;
6010 struct key_parse key;
6011 bool local_state_change;
6012
6013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6014 return -EINVAL;
6015
6016 if (!info->attrs[NL80211_ATTR_MAC])
6017 return -EINVAL;
6018
6019 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6020 return -EINVAL;
6021
6022 if (!info->attrs[NL80211_ATTR_SSID])
6023 return -EINVAL;
6024
6025 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6026 return -EINVAL;
6027
6028 err = nl80211_parse_key(info, &key);
6029 if (err)
6030 return err;
6031
6032 if (key.idx >= 0) {
6033 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6034 return -EINVAL;
6035 if (!key.p.key || !key.p.key_len)
6036 return -EINVAL;
6037 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6038 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6039 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6040 key.p.key_len != WLAN_KEY_LEN_WEP104))
6041 return -EINVAL;
6042 if (key.idx > 4)
6043 return -EINVAL;
6044 } else {
6045 key.p.key_len = 0;
6046 key.p.key = NULL;
6047 }
6048
6049 if (key.idx >= 0) {
6050 int i;
6051 bool ok = false;
6052 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6053 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6054 ok = true;
6055 break;
6056 }
6057 }
6058 if (!ok)
6059 return -EINVAL;
6060 }
6061
6062 if (!rdev->ops->auth)
6063 return -EOPNOTSUPP;
6064
6065 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6066 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6067 return -EOPNOTSUPP;
6068
6069 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6070 chan = ieee80211_get_channel(&rdev->wiphy,
6071 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6072 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6073 return -EINVAL;
6074
6075 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6076 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6077
6078 if (info->attrs[NL80211_ATTR_IE]) {
6079 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6080 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6081 }
6082
6083 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6084 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6085 return -EINVAL;
6086
6087 if (auth_type == NL80211_AUTHTYPE_SAE &&
6088 !info->attrs[NL80211_ATTR_SAE_DATA])
6089 return -EINVAL;
6090
6091 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6092 if (auth_type != NL80211_AUTHTYPE_SAE)
6093 return -EINVAL;
6094 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6095 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6096 /* need to include at least Auth Transaction and Status Code */
6097 if (sae_data_len < 4)
6098 return -EINVAL;
6099 }
6100
6101 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6102
6103 /*
6104 * Since we no longer track auth state, ignore
6105 * requests to only change local state.
6106 */
6107 if (local_state_change)
6108 return 0;
6109
6110 wdev_lock(dev->ieee80211_ptr);
6111 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6112 ssid, ssid_len, ie, ie_len,
6113 key.p.key, key.p.key_len, key.idx,
6114 sae_data, sae_data_len);
6115 wdev_unlock(dev->ieee80211_ptr);
6116 return err;
6117 }
6118
6119 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6120 struct genl_info *info,
6121 struct cfg80211_crypto_settings *settings,
6122 int cipher_limit)
6123 {
6124 memset(settings, 0, sizeof(*settings));
6125
6126 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6127
6128 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6129 u16 proto;
6130 proto = nla_get_u16(
6131 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6132 settings->control_port_ethertype = cpu_to_be16(proto);
6133 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6134 proto != ETH_P_PAE)
6135 return -EINVAL;
6136 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6137 settings->control_port_no_encrypt = true;
6138 } else
6139 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6140
6141 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6142 void *data;
6143 int len, i;
6144
6145 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6146 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6147 settings->n_ciphers_pairwise = len / sizeof(u32);
6148
6149 if (len % sizeof(u32))
6150 return -EINVAL;
6151
6152 if (settings->n_ciphers_pairwise > cipher_limit)
6153 return -EINVAL;
6154
6155 memcpy(settings->ciphers_pairwise, data, len);
6156
6157 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6158 if (!cfg80211_supported_cipher_suite(
6159 &rdev->wiphy,
6160 settings->ciphers_pairwise[i]))
6161 return -EINVAL;
6162 }
6163
6164 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6165 settings->cipher_group =
6166 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6167 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6168 settings->cipher_group))
6169 return -EINVAL;
6170 }
6171
6172 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6173 settings->wpa_versions =
6174 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6175 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6176 return -EINVAL;
6177 }
6178
6179 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6180 void *data;
6181 int len;
6182
6183 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6184 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6185 settings->n_akm_suites = len / sizeof(u32);
6186
6187 if (len % sizeof(u32))
6188 return -EINVAL;
6189
6190 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6191 return -EINVAL;
6192
6193 memcpy(settings->akm_suites, data, len);
6194 }
6195
6196 return 0;
6197 }
6198
6199 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6200 {
6201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6202 struct net_device *dev = info->user_ptr[1];
6203 struct ieee80211_channel *chan;
6204 struct cfg80211_assoc_request req = {};
6205 const u8 *bssid, *ssid;
6206 int err, ssid_len = 0;
6207
6208 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6209 return -EINVAL;
6210
6211 if (!info->attrs[NL80211_ATTR_MAC] ||
6212 !info->attrs[NL80211_ATTR_SSID] ||
6213 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6214 return -EINVAL;
6215
6216 if (!rdev->ops->assoc)
6217 return -EOPNOTSUPP;
6218
6219 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6220 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6221 return -EOPNOTSUPP;
6222
6223 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6224
6225 chan = ieee80211_get_channel(&rdev->wiphy,
6226 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6227 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6228 return -EINVAL;
6229
6230 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6231 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6232
6233 if (info->attrs[NL80211_ATTR_IE]) {
6234 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6235 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6236 }
6237
6238 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6239 enum nl80211_mfp mfp =
6240 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6241 if (mfp == NL80211_MFP_REQUIRED)
6242 req.use_mfp = true;
6243 else if (mfp != NL80211_MFP_NO)
6244 return -EINVAL;
6245 }
6246
6247 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6248 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6249
6250 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6251 req.flags |= ASSOC_REQ_DISABLE_HT;
6252
6253 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6254 memcpy(&req.ht_capa_mask,
6255 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6256 sizeof(req.ht_capa_mask));
6257
6258 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6259 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6260 return -EINVAL;
6261 memcpy(&req.ht_capa,
6262 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6263 sizeof(req.ht_capa));
6264 }
6265
6266 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6267 req.flags |= ASSOC_REQ_DISABLE_VHT;
6268
6269 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6270 memcpy(&req.vht_capa_mask,
6271 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6272 sizeof(req.vht_capa_mask));
6273
6274 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6275 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6276 return -EINVAL;
6277 memcpy(&req.vht_capa,
6278 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6279 sizeof(req.vht_capa));
6280 }
6281
6282 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6283 if (!err) {
6284 wdev_lock(dev->ieee80211_ptr);
6285 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6286 ssid, ssid_len, &req);
6287 wdev_unlock(dev->ieee80211_ptr);
6288 }
6289
6290 return err;
6291 }
6292
6293 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6294 {
6295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6296 struct net_device *dev = info->user_ptr[1];
6297 const u8 *ie = NULL, *bssid;
6298 int ie_len = 0, err;
6299 u16 reason_code;
6300 bool local_state_change;
6301
6302 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6303 return -EINVAL;
6304
6305 if (!info->attrs[NL80211_ATTR_MAC])
6306 return -EINVAL;
6307
6308 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6309 return -EINVAL;
6310
6311 if (!rdev->ops->deauth)
6312 return -EOPNOTSUPP;
6313
6314 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6315 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6316 return -EOPNOTSUPP;
6317
6318 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6319
6320 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6321 if (reason_code == 0) {
6322 /* Reason Code 0 is reserved */
6323 return -EINVAL;
6324 }
6325
6326 if (info->attrs[NL80211_ATTR_IE]) {
6327 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6328 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6329 }
6330
6331 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6332
6333 wdev_lock(dev->ieee80211_ptr);
6334 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6335 local_state_change);
6336 wdev_unlock(dev->ieee80211_ptr);
6337 return err;
6338 }
6339
6340 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6341 {
6342 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6343 struct net_device *dev = info->user_ptr[1];
6344 const u8 *ie = NULL, *bssid;
6345 int ie_len = 0, err;
6346 u16 reason_code;
6347 bool local_state_change;
6348
6349 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6350 return -EINVAL;
6351
6352 if (!info->attrs[NL80211_ATTR_MAC])
6353 return -EINVAL;
6354
6355 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6356 return -EINVAL;
6357
6358 if (!rdev->ops->disassoc)
6359 return -EOPNOTSUPP;
6360
6361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6363 return -EOPNOTSUPP;
6364
6365 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6366
6367 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6368 if (reason_code == 0) {
6369 /* Reason Code 0 is reserved */
6370 return -EINVAL;
6371 }
6372
6373 if (info->attrs[NL80211_ATTR_IE]) {
6374 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6375 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6376 }
6377
6378 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6379
6380 wdev_lock(dev->ieee80211_ptr);
6381 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6382 local_state_change);
6383 wdev_unlock(dev->ieee80211_ptr);
6384 return err;
6385 }
6386
6387 static bool
6388 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6389 int mcast_rate[IEEE80211_NUM_BANDS],
6390 int rateval)
6391 {
6392 struct wiphy *wiphy = &rdev->wiphy;
6393 bool found = false;
6394 int band, i;
6395
6396 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6397 struct ieee80211_supported_band *sband;
6398
6399 sband = wiphy->bands[band];
6400 if (!sband)
6401 continue;
6402
6403 for (i = 0; i < sband->n_bitrates; i++) {
6404 if (sband->bitrates[i].bitrate == rateval) {
6405 mcast_rate[band] = i + 1;
6406 found = true;
6407 break;
6408 }
6409 }
6410 }
6411
6412 return found;
6413 }
6414
6415 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6416 {
6417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6418 struct net_device *dev = info->user_ptr[1];
6419 struct cfg80211_ibss_params ibss;
6420 struct wiphy *wiphy;
6421 struct cfg80211_cached_keys *connkeys = NULL;
6422 int err;
6423
6424 memset(&ibss, 0, sizeof(ibss));
6425
6426 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6427 return -EINVAL;
6428
6429 if (!info->attrs[NL80211_ATTR_SSID] ||
6430 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6431 return -EINVAL;
6432
6433 ibss.beacon_interval = 100;
6434
6435 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6436 ibss.beacon_interval =
6437 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6438 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6439 return -EINVAL;
6440 }
6441
6442 if (!rdev->ops->join_ibss)
6443 return -EOPNOTSUPP;
6444
6445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6446 return -EOPNOTSUPP;
6447
6448 wiphy = &rdev->wiphy;
6449
6450 if (info->attrs[NL80211_ATTR_MAC]) {
6451 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6452
6453 if (!is_valid_ether_addr(ibss.bssid))
6454 return -EINVAL;
6455 }
6456 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6457 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6458
6459 if (info->attrs[NL80211_ATTR_IE]) {
6460 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6461 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6462 }
6463
6464 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6465 if (err)
6466 return err;
6467
6468 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6469 return -EINVAL;
6470
6471 switch (ibss.chandef.width) {
6472 case NL80211_CHAN_WIDTH_5:
6473 case NL80211_CHAN_WIDTH_10:
6474 case NL80211_CHAN_WIDTH_20_NOHT:
6475 break;
6476 case NL80211_CHAN_WIDTH_20:
6477 case NL80211_CHAN_WIDTH_40:
6478 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6479 break;
6480 default:
6481 return -EINVAL;
6482 }
6483
6484 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6485 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6486
6487 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6488 u8 *rates =
6489 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6490 int n_rates =
6491 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6492 struct ieee80211_supported_band *sband =
6493 wiphy->bands[ibss.chandef.chan->band];
6494
6495 err = ieee80211_get_ratemask(sband, rates, n_rates,
6496 &ibss.basic_rates);
6497 if (err)
6498 return err;
6499 }
6500
6501 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6502 memcpy(&ibss.ht_capa_mask,
6503 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6504 sizeof(ibss.ht_capa_mask));
6505
6506 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6507 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6508 return -EINVAL;
6509 memcpy(&ibss.ht_capa,
6510 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6511 sizeof(ibss.ht_capa));
6512 }
6513
6514 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6515 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6516 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6517 return -EINVAL;
6518
6519 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6520 bool no_ht = false;
6521
6522 connkeys = nl80211_parse_connkeys(rdev,
6523 info->attrs[NL80211_ATTR_KEYS],
6524 &no_ht);
6525 if (IS_ERR(connkeys))
6526 return PTR_ERR(connkeys);
6527
6528 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6529 no_ht) {
6530 kfree(connkeys);
6531 return -EINVAL;
6532 }
6533 }
6534
6535 ibss.control_port =
6536 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6537
6538 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6539 if (err)
6540 kfree(connkeys);
6541 return err;
6542 }
6543
6544 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6545 {
6546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6547 struct net_device *dev = info->user_ptr[1];
6548
6549 if (!rdev->ops->leave_ibss)
6550 return -EOPNOTSUPP;
6551
6552 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6553 return -EOPNOTSUPP;
6554
6555 return cfg80211_leave_ibss(rdev, dev, false);
6556 }
6557
6558 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6559 {
6560 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6561 struct net_device *dev = info->user_ptr[1];
6562 int mcast_rate[IEEE80211_NUM_BANDS];
6563 u32 nla_rate;
6564 int err;
6565
6566 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6568 return -EOPNOTSUPP;
6569
6570 if (!rdev->ops->set_mcast_rate)
6571 return -EOPNOTSUPP;
6572
6573 memset(mcast_rate, 0, sizeof(mcast_rate));
6574
6575 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6576 return -EINVAL;
6577
6578 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6579 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6580 return -EINVAL;
6581
6582 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6583
6584 return err;
6585 }
6586
6587
6588 #ifdef CONFIG_NL80211_TESTMODE
6589 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6590 .name = "testmode",
6591 };
6592
6593 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6594 {
6595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6596 struct wireless_dev *wdev =
6597 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6598 int err;
6599
6600 if (!rdev->ops->testmode_cmd)
6601 return -EOPNOTSUPP;
6602
6603 if (IS_ERR(wdev)) {
6604 err = PTR_ERR(wdev);
6605 if (err != -EINVAL)
6606 return err;
6607 wdev = NULL;
6608 } else if (wdev->wiphy != &rdev->wiphy) {
6609 return -EINVAL;
6610 }
6611
6612 if (!info->attrs[NL80211_ATTR_TESTDATA])
6613 return -EINVAL;
6614
6615 rdev->testmode_info = info;
6616 err = rdev_testmode_cmd(rdev, wdev,
6617 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6618 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6619 rdev->testmode_info = NULL;
6620
6621 return err;
6622 }
6623
6624 static int nl80211_testmode_dump(struct sk_buff *skb,
6625 struct netlink_callback *cb)
6626 {
6627 struct cfg80211_registered_device *rdev;
6628 int err;
6629 long phy_idx;
6630 void *data = NULL;
6631 int data_len = 0;
6632
6633 rtnl_lock();
6634
6635 if (cb->args[0]) {
6636 /*
6637 * 0 is a valid index, but not valid for args[0],
6638 * so we need to offset by 1.
6639 */
6640 phy_idx = cb->args[0] - 1;
6641 } else {
6642 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6643 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6644 nl80211_policy);
6645 if (err)
6646 goto out_err;
6647
6648 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6649 nl80211_fam.attrbuf);
6650 if (IS_ERR(rdev)) {
6651 err = PTR_ERR(rdev);
6652 goto out_err;
6653 }
6654 phy_idx = rdev->wiphy_idx;
6655 rdev = NULL;
6656
6657 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6658 cb->args[1] =
6659 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6660 }
6661
6662 if (cb->args[1]) {
6663 data = nla_data((void *)cb->args[1]);
6664 data_len = nla_len((void *)cb->args[1]);
6665 }
6666
6667 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6668 if (!rdev) {
6669 err = -ENOENT;
6670 goto out_err;
6671 }
6672
6673 if (!rdev->ops->testmode_dump) {
6674 err = -EOPNOTSUPP;
6675 goto out_err;
6676 }
6677
6678 while (1) {
6679 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6680 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6681 NL80211_CMD_TESTMODE);
6682 struct nlattr *tmdata;
6683
6684 if (!hdr)
6685 break;
6686
6687 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6688 genlmsg_cancel(skb, hdr);
6689 break;
6690 }
6691
6692 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6693 if (!tmdata) {
6694 genlmsg_cancel(skb, hdr);
6695 break;
6696 }
6697 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6698 nla_nest_end(skb, tmdata);
6699
6700 if (err == -ENOBUFS || err == -ENOENT) {
6701 genlmsg_cancel(skb, hdr);
6702 break;
6703 } else if (err) {
6704 genlmsg_cancel(skb, hdr);
6705 goto out_err;
6706 }
6707
6708 genlmsg_end(skb, hdr);
6709 }
6710
6711 err = skb->len;
6712 /* see above */
6713 cb->args[0] = phy_idx + 1;
6714 out_err:
6715 rtnl_unlock();
6716 return err;
6717 }
6718
6719 static struct sk_buff *
6720 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6721 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6722 {
6723 struct sk_buff *skb;
6724 void *hdr;
6725 struct nlattr *data;
6726
6727 skb = nlmsg_new(approxlen + 100, gfp);
6728 if (!skb)
6729 return NULL;
6730
6731 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6732 if (!hdr) {
6733 kfree_skb(skb);
6734 return NULL;
6735 }
6736
6737 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6738 goto nla_put_failure;
6739 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6740
6741 ((void **)skb->cb)[0] = rdev;
6742 ((void **)skb->cb)[1] = hdr;
6743 ((void **)skb->cb)[2] = data;
6744
6745 return skb;
6746
6747 nla_put_failure:
6748 kfree_skb(skb);
6749 return NULL;
6750 }
6751
6752 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6753 int approxlen)
6754 {
6755 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6756
6757 if (WARN_ON(!rdev->testmode_info))
6758 return NULL;
6759
6760 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6761 rdev->testmode_info->snd_portid,
6762 rdev->testmode_info->snd_seq,
6763 GFP_KERNEL);
6764 }
6765 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6766
6767 int cfg80211_testmode_reply(struct sk_buff *skb)
6768 {
6769 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6770 void *hdr = ((void **)skb->cb)[1];
6771 struct nlattr *data = ((void **)skb->cb)[2];
6772
6773 if (WARN_ON(!rdev->testmode_info)) {
6774 kfree_skb(skb);
6775 return -EINVAL;
6776 }
6777
6778 nla_nest_end(skb, data);
6779 genlmsg_end(skb, hdr);
6780 return genlmsg_reply(skb, rdev->testmode_info);
6781 }
6782 EXPORT_SYMBOL(cfg80211_testmode_reply);
6783
6784 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6785 int approxlen, gfp_t gfp)
6786 {
6787 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6788
6789 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6790 }
6791 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6792
6793 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6794 {
6795 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6796 void *hdr = ((void **)skb->cb)[1];
6797 struct nlattr *data = ((void **)skb->cb)[2];
6798
6799 nla_nest_end(skb, data);
6800 genlmsg_end(skb, hdr);
6801 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6802 nl80211_testmode_mcgrp.id, gfp);
6803 }
6804 EXPORT_SYMBOL(cfg80211_testmode_event);
6805 #endif
6806
6807 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6808 {
6809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6810 struct net_device *dev = info->user_ptr[1];
6811 struct cfg80211_connect_params connect;
6812 struct wiphy *wiphy;
6813 struct cfg80211_cached_keys *connkeys = NULL;
6814 int err;
6815
6816 memset(&connect, 0, sizeof(connect));
6817
6818 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6819 return -EINVAL;
6820
6821 if (!info->attrs[NL80211_ATTR_SSID] ||
6822 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6823 return -EINVAL;
6824
6825 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6826 connect.auth_type =
6827 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6828 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6829 NL80211_CMD_CONNECT))
6830 return -EINVAL;
6831 } else
6832 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6833
6834 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6835
6836 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6837 NL80211_MAX_NR_CIPHER_SUITES);
6838 if (err)
6839 return err;
6840
6841 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6842 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6843 return -EOPNOTSUPP;
6844
6845 wiphy = &rdev->wiphy;
6846
6847 connect.bg_scan_period = -1;
6848 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6849 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6850 connect.bg_scan_period =
6851 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6852 }
6853
6854 if (info->attrs[NL80211_ATTR_MAC])
6855 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6856 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6857 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6858
6859 if (info->attrs[NL80211_ATTR_IE]) {
6860 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6861 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6862 }
6863
6864 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6865 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6866 if (connect.mfp != NL80211_MFP_REQUIRED &&
6867 connect.mfp != NL80211_MFP_NO)
6868 return -EINVAL;
6869 } else {
6870 connect.mfp = NL80211_MFP_NO;
6871 }
6872
6873 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6874 connect.channel =
6875 ieee80211_get_channel(wiphy,
6876 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6877 if (!connect.channel ||
6878 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6879 return -EINVAL;
6880 }
6881
6882 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6883 connkeys = nl80211_parse_connkeys(rdev,
6884 info->attrs[NL80211_ATTR_KEYS], NULL);
6885 if (IS_ERR(connkeys))
6886 return PTR_ERR(connkeys);
6887 }
6888
6889 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6890 connect.flags |= ASSOC_REQ_DISABLE_HT;
6891
6892 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6893 memcpy(&connect.ht_capa_mask,
6894 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6895 sizeof(connect.ht_capa_mask));
6896
6897 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6898 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6899 kfree(connkeys);
6900 return -EINVAL;
6901 }
6902 memcpy(&connect.ht_capa,
6903 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6904 sizeof(connect.ht_capa));
6905 }
6906
6907 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6908 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6909
6910 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6911 memcpy(&connect.vht_capa_mask,
6912 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6913 sizeof(connect.vht_capa_mask));
6914
6915 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6916 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6917 kfree(connkeys);
6918 return -EINVAL;
6919 }
6920 memcpy(&connect.vht_capa,
6921 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6922 sizeof(connect.vht_capa));
6923 }
6924
6925 wdev_lock(dev->ieee80211_ptr);
6926 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6927 wdev_unlock(dev->ieee80211_ptr);
6928 if (err)
6929 kfree(connkeys);
6930 return err;
6931 }
6932
6933 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6934 {
6935 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6936 struct net_device *dev = info->user_ptr[1];
6937 u16 reason;
6938 int ret;
6939
6940 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6941 reason = WLAN_REASON_DEAUTH_LEAVING;
6942 else
6943 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6944
6945 if (reason == 0)
6946 return -EINVAL;
6947
6948 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6949 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6950 return -EOPNOTSUPP;
6951
6952 wdev_lock(dev->ieee80211_ptr);
6953 ret = cfg80211_disconnect(rdev, dev, reason, true);
6954 wdev_unlock(dev->ieee80211_ptr);
6955 return ret;
6956 }
6957
6958 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6959 {
6960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6961 struct net *net;
6962 int err;
6963 u32 pid;
6964
6965 if (!info->attrs[NL80211_ATTR_PID])
6966 return -EINVAL;
6967
6968 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6969
6970 net = get_net_ns_by_pid(pid);
6971 if (IS_ERR(net))
6972 return PTR_ERR(net);
6973
6974 err = 0;
6975
6976 /* check if anything to do */
6977 if (!net_eq(wiphy_net(&rdev->wiphy), net))
6978 err = cfg80211_switch_netns(rdev, net);
6979
6980 put_net(net);
6981 return err;
6982 }
6983
6984 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6985 {
6986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6987 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6988 struct cfg80211_pmksa *pmksa) = NULL;
6989 struct net_device *dev = info->user_ptr[1];
6990 struct cfg80211_pmksa pmksa;
6991
6992 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6993
6994 if (!info->attrs[NL80211_ATTR_MAC])
6995 return -EINVAL;
6996
6997 if (!info->attrs[NL80211_ATTR_PMKID])
6998 return -EINVAL;
6999
7000 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7001 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7002
7003 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7004 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7005 return -EOPNOTSUPP;
7006
7007 switch (info->genlhdr->cmd) {
7008 case NL80211_CMD_SET_PMKSA:
7009 rdev_ops = rdev->ops->set_pmksa;
7010 break;
7011 case NL80211_CMD_DEL_PMKSA:
7012 rdev_ops = rdev->ops->del_pmksa;
7013 break;
7014 default:
7015 WARN_ON(1);
7016 break;
7017 }
7018
7019 if (!rdev_ops)
7020 return -EOPNOTSUPP;
7021
7022 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7023 }
7024
7025 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7026 {
7027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028 struct net_device *dev = info->user_ptr[1];
7029
7030 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7031 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7032 return -EOPNOTSUPP;
7033
7034 if (!rdev->ops->flush_pmksa)
7035 return -EOPNOTSUPP;
7036
7037 return rdev_flush_pmksa(rdev, dev);
7038 }
7039
7040 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7041 {
7042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7043 struct net_device *dev = info->user_ptr[1];
7044 u8 action_code, dialog_token;
7045 u16 status_code;
7046 u8 *peer;
7047
7048 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7049 !rdev->ops->tdls_mgmt)
7050 return -EOPNOTSUPP;
7051
7052 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7053 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7054 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7055 !info->attrs[NL80211_ATTR_IE] ||
7056 !info->attrs[NL80211_ATTR_MAC])
7057 return -EINVAL;
7058
7059 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7060 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7061 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7062 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7063
7064 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7065 dialog_token, status_code,
7066 nla_data(info->attrs[NL80211_ATTR_IE]),
7067 nla_len(info->attrs[NL80211_ATTR_IE]));
7068 }
7069
7070 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7071 {
7072 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7073 struct net_device *dev = info->user_ptr[1];
7074 enum nl80211_tdls_operation operation;
7075 u8 *peer;
7076
7077 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7078 !rdev->ops->tdls_oper)
7079 return -EOPNOTSUPP;
7080
7081 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7082 !info->attrs[NL80211_ATTR_MAC])
7083 return -EINVAL;
7084
7085 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7086 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7087
7088 return rdev_tdls_oper(rdev, dev, peer, operation);
7089 }
7090
7091 static int nl80211_remain_on_channel(struct sk_buff *skb,
7092 struct genl_info *info)
7093 {
7094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7095 struct wireless_dev *wdev = info->user_ptr[1];
7096 struct cfg80211_chan_def chandef;
7097 struct sk_buff *msg;
7098 void *hdr;
7099 u64 cookie;
7100 u32 duration;
7101 int err;
7102
7103 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7104 !info->attrs[NL80211_ATTR_DURATION])
7105 return -EINVAL;
7106
7107 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7108
7109 if (!rdev->ops->remain_on_channel ||
7110 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7111 return -EOPNOTSUPP;
7112
7113 /*
7114 * We should be on that channel for at least a minimum amount of
7115 * time (10ms) but no longer than the driver supports.
7116 */
7117 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7118 duration > rdev->wiphy.max_remain_on_channel_duration)
7119 return -EINVAL;
7120
7121 err = nl80211_parse_chandef(rdev, info, &chandef);
7122 if (err)
7123 return err;
7124
7125 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7126 if (!msg)
7127 return -ENOMEM;
7128
7129 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7130 NL80211_CMD_REMAIN_ON_CHANNEL);
7131 if (!hdr) {
7132 err = -ENOBUFS;
7133 goto free_msg;
7134 }
7135
7136 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7137 duration, &cookie);
7138
7139 if (err)
7140 goto free_msg;
7141
7142 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7143 goto nla_put_failure;
7144
7145 genlmsg_end(msg, hdr);
7146
7147 return genlmsg_reply(msg, info);
7148
7149 nla_put_failure:
7150 err = -ENOBUFS;
7151 free_msg:
7152 nlmsg_free(msg);
7153 return err;
7154 }
7155
7156 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7157 struct genl_info *info)
7158 {
7159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7160 struct wireless_dev *wdev = info->user_ptr[1];
7161 u64 cookie;
7162
7163 if (!info->attrs[NL80211_ATTR_COOKIE])
7164 return -EINVAL;
7165
7166 if (!rdev->ops->cancel_remain_on_channel)
7167 return -EOPNOTSUPP;
7168
7169 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7170
7171 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7172 }
7173
7174 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7175 u8 *rates, u8 rates_len)
7176 {
7177 u8 i;
7178 u32 mask = 0;
7179
7180 for (i = 0; i < rates_len; i++) {
7181 int rate = (rates[i] & 0x7f) * 5;
7182 int ridx;
7183 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7184 struct ieee80211_rate *srate =
7185 &sband->bitrates[ridx];
7186 if (rate == srate->bitrate) {
7187 mask |= 1 << ridx;
7188 break;
7189 }
7190 }
7191 if (ridx == sband->n_bitrates)
7192 return 0; /* rate not found */
7193 }
7194
7195 return mask;
7196 }
7197
7198 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7199 u8 *rates, u8 rates_len,
7200 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7201 {
7202 u8 i;
7203
7204 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7205
7206 for (i = 0; i < rates_len; i++) {
7207 int ridx, rbit;
7208
7209 ridx = rates[i] / 8;
7210 rbit = BIT(rates[i] % 8);
7211
7212 /* check validity */
7213 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7214 return false;
7215
7216 /* check availability */
7217 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7218 mcs[ridx] |= rbit;
7219 else
7220 return false;
7221 }
7222
7223 return true;
7224 }
7225
7226 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7227 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7228 .len = NL80211_MAX_SUPP_RATES },
7229 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7230 .len = NL80211_MAX_SUPP_HT_RATES },
7231 };
7232
7233 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7234 struct genl_info *info)
7235 {
7236 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7238 struct cfg80211_bitrate_mask mask;
7239 int rem, i;
7240 struct net_device *dev = info->user_ptr[1];
7241 struct nlattr *tx_rates;
7242 struct ieee80211_supported_band *sband;
7243
7244 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7245 return -EINVAL;
7246
7247 if (!rdev->ops->set_bitrate_mask)
7248 return -EOPNOTSUPP;
7249
7250 memset(&mask, 0, sizeof(mask));
7251 /* Default to all rates enabled */
7252 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7253 sband = rdev->wiphy.bands[i];
7254 mask.control[i].legacy =
7255 sband ? (1 << sband->n_bitrates) - 1 : 0;
7256 if (sband)
7257 memcpy(mask.control[i].mcs,
7258 sband->ht_cap.mcs.rx_mask,
7259 sizeof(mask.control[i].mcs));
7260 else
7261 memset(mask.control[i].mcs, 0,
7262 sizeof(mask.control[i].mcs));
7263 }
7264
7265 /*
7266 * The nested attribute uses enum nl80211_band as the index. This maps
7267 * directly to the enum ieee80211_band values used in cfg80211.
7268 */
7269 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7270 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7271 {
7272 enum ieee80211_band band = nla_type(tx_rates);
7273 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7274 return -EINVAL;
7275 sband = rdev->wiphy.bands[band];
7276 if (sband == NULL)
7277 return -EINVAL;
7278 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7279 nla_len(tx_rates), nl80211_txattr_policy);
7280 if (tb[NL80211_TXRATE_LEGACY]) {
7281 mask.control[band].legacy = rateset_to_mask(
7282 sband,
7283 nla_data(tb[NL80211_TXRATE_LEGACY]),
7284 nla_len(tb[NL80211_TXRATE_LEGACY]));
7285 if ((mask.control[band].legacy == 0) &&
7286 nla_len(tb[NL80211_TXRATE_LEGACY]))
7287 return -EINVAL;
7288 }
7289 if (tb[NL80211_TXRATE_MCS]) {
7290 if (!ht_rateset_to_mask(
7291 sband,
7292 nla_data(tb[NL80211_TXRATE_MCS]),
7293 nla_len(tb[NL80211_TXRATE_MCS]),
7294 mask.control[band].mcs))
7295 return -EINVAL;
7296 }
7297
7298 if (mask.control[band].legacy == 0) {
7299 /* don't allow empty legacy rates if HT
7300 * is not even supported. */
7301 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7302 return -EINVAL;
7303
7304 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7305 if (mask.control[band].mcs[i])
7306 break;
7307
7308 /* legacy and mcs rates may not be both empty */
7309 if (i == IEEE80211_HT_MCS_MASK_LEN)
7310 return -EINVAL;
7311 }
7312 }
7313
7314 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7315 }
7316
7317 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7318 {
7319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7320 struct wireless_dev *wdev = info->user_ptr[1];
7321 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7322
7323 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7324 return -EINVAL;
7325
7326 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7327 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7328
7329 switch (wdev->iftype) {
7330 case NL80211_IFTYPE_STATION:
7331 case NL80211_IFTYPE_ADHOC:
7332 case NL80211_IFTYPE_P2P_CLIENT:
7333 case NL80211_IFTYPE_AP:
7334 case NL80211_IFTYPE_AP_VLAN:
7335 case NL80211_IFTYPE_MESH_POINT:
7336 case NL80211_IFTYPE_P2P_GO:
7337 case NL80211_IFTYPE_P2P_DEVICE:
7338 break;
7339 default:
7340 return -EOPNOTSUPP;
7341 }
7342
7343 /* not much point in registering if we can't reply */
7344 if (!rdev->ops->mgmt_tx)
7345 return -EOPNOTSUPP;
7346
7347 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7348 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7349 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7350 }
7351
7352 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7353 {
7354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7355 struct wireless_dev *wdev = info->user_ptr[1];
7356 struct cfg80211_chan_def chandef;
7357 int err;
7358 void *hdr = NULL;
7359 u64 cookie;
7360 struct sk_buff *msg = NULL;
7361 unsigned int wait = 0;
7362 bool offchan, no_cck, dont_wait_for_ack;
7363
7364 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7365
7366 if (!info->attrs[NL80211_ATTR_FRAME])
7367 return -EINVAL;
7368
7369 if (!rdev->ops->mgmt_tx)
7370 return -EOPNOTSUPP;
7371
7372 switch (wdev->iftype) {
7373 case NL80211_IFTYPE_P2P_DEVICE:
7374 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7375 return -EINVAL;
7376 case NL80211_IFTYPE_STATION:
7377 case NL80211_IFTYPE_ADHOC:
7378 case NL80211_IFTYPE_P2P_CLIENT:
7379 case NL80211_IFTYPE_AP:
7380 case NL80211_IFTYPE_AP_VLAN:
7381 case NL80211_IFTYPE_MESH_POINT:
7382 case NL80211_IFTYPE_P2P_GO:
7383 break;
7384 default:
7385 return -EOPNOTSUPP;
7386 }
7387
7388 if (info->attrs[NL80211_ATTR_DURATION]) {
7389 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7390 return -EINVAL;
7391 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7392
7393 /*
7394 * We should wait on the channel for at least a minimum amount
7395 * of time (10ms) but no longer than the driver supports.
7396 */
7397 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7398 wait > rdev->wiphy.max_remain_on_channel_duration)
7399 return -EINVAL;
7400
7401 }
7402
7403 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7404
7405 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7406 return -EINVAL;
7407
7408 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7409
7410 /* get the channel if any has been specified, otherwise pass NULL to
7411 * the driver. The latter will use the current one
7412 */
7413 chandef.chan = NULL;
7414 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7415 err = nl80211_parse_chandef(rdev, info, &chandef);
7416 if (err)
7417 return err;
7418 }
7419
7420 if (!chandef.chan && offchan)
7421 return -EINVAL;
7422
7423 if (!dont_wait_for_ack) {
7424 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7425 if (!msg)
7426 return -ENOMEM;
7427
7428 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7429 NL80211_CMD_FRAME);
7430 if (!hdr) {
7431 err = -ENOBUFS;
7432 goto free_msg;
7433 }
7434 }
7435
7436 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7437 nla_data(info->attrs[NL80211_ATTR_FRAME]),
7438 nla_len(info->attrs[NL80211_ATTR_FRAME]),
7439 no_cck, dont_wait_for_ack, &cookie);
7440 if (err)
7441 goto free_msg;
7442
7443 if (msg) {
7444 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7445 goto nla_put_failure;
7446
7447 genlmsg_end(msg, hdr);
7448 return genlmsg_reply(msg, info);
7449 }
7450
7451 return 0;
7452
7453 nla_put_failure:
7454 err = -ENOBUFS;
7455 free_msg:
7456 nlmsg_free(msg);
7457 return err;
7458 }
7459
7460 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7461 {
7462 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7463 struct wireless_dev *wdev = info->user_ptr[1];
7464 u64 cookie;
7465
7466 if (!info->attrs[NL80211_ATTR_COOKIE])
7467 return -EINVAL;
7468
7469 if (!rdev->ops->mgmt_tx_cancel_wait)
7470 return -EOPNOTSUPP;
7471
7472 switch (wdev->iftype) {
7473 case NL80211_IFTYPE_STATION:
7474 case NL80211_IFTYPE_ADHOC:
7475 case NL80211_IFTYPE_P2P_CLIENT:
7476 case NL80211_IFTYPE_AP:
7477 case NL80211_IFTYPE_AP_VLAN:
7478 case NL80211_IFTYPE_P2P_GO:
7479 case NL80211_IFTYPE_P2P_DEVICE:
7480 break;
7481 default:
7482 return -EOPNOTSUPP;
7483 }
7484
7485 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7486
7487 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7488 }
7489
7490 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7491 {
7492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493 struct wireless_dev *wdev;
7494 struct net_device *dev = info->user_ptr[1];
7495 u8 ps_state;
7496 bool state;
7497 int err;
7498
7499 if (!info->attrs[NL80211_ATTR_PS_STATE])
7500 return -EINVAL;
7501
7502 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7503
7504 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7505 return -EINVAL;
7506
7507 wdev = dev->ieee80211_ptr;
7508
7509 if (!rdev->ops->set_power_mgmt)
7510 return -EOPNOTSUPP;
7511
7512 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7513
7514 if (state == wdev->ps)
7515 return 0;
7516
7517 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7518 if (!err)
7519 wdev->ps = state;
7520 return err;
7521 }
7522
7523 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7524 {
7525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7526 enum nl80211_ps_state ps_state;
7527 struct wireless_dev *wdev;
7528 struct net_device *dev = info->user_ptr[1];
7529 struct sk_buff *msg;
7530 void *hdr;
7531 int err;
7532
7533 wdev = dev->ieee80211_ptr;
7534
7535 if (!rdev->ops->set_power_mgmt)
7536 return -EOPNOTSUPP;
7537
7538 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7539 if (!msg)
7540 return -ENOMEM;
7541
7542 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7543 NL80211_CMD_GET_POWER_SAVE);
7544 if (!hdr) {
7545 err = -ENOBUFS;
7546 goto free_msg;
7547 }
7548
7549 if (wdev->ps)
7550 ps_state = NL80211_PS_ENABLED;
7551 else
7552 ps_state = NL80211_PS_DISABLED;
7553
7554 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7555 goto nla_put_failure;
7556
7557 genlmsg_end(msg, hdr);
7558 return genlmsg_reply(msg, info);
7559
7560 nla_put_failure:
7561 err = -ENOBUFS;
7562 free_msg:
7563 nlmsg_free(msg);
7564 return err;
7565 }
7566
7567 static struct nla_policy
7568 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7569 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7570 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7571 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7572 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7573 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7574 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7575 };
7576
7577 static int nl80211_set_cqm_txe(struct genl_info *info,
7578 u32 rate, u32 pkts, u32 intvl)
7579 {
7580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7581 struct net_device *dev = info->user_ptr[1];
7582 struct wireless_dev *wdev = dev->ieee80211_ptr;
7583
7584 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7585 return -EINVAL;
7586
7587 if (!rdev->ops->set_cqm_txe_config)
7588 return -EOPNOTSUPP;
7589
7590 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7591 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7592 return -EOPNOTSUPP;
7593
7594 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7595 }
7596
7597 static int nl80211_set_cqm_rssi(struct genl_info *info,
7598 s32 threshold, u32 hysteresis)
7599 {
7600 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7601 struct net_device *dev = info->user_ptr[1];
7602 struct wireless_dev *wdev = dev->ieee80211_ptr;
7603
7604 if (threshold > 0)
7605 return -EINVAL;
7606
7607 /* disabling - hysteresis should also be zero then */
7608 if (threshold == 0)
7609 hysteresis = 0;
7610
7611 if (!rdev->ops->set_cqm_rssi_config)
7612 return -EOPNOTSUPP;
7613
7614 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7615 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7616 return -EOPNOTSUPP;
7617
7618 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7619 }
7620
7621 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7622 {
7623 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7624 struct nlattr *cqm;
7625 int err;
7626
7627 cqm = info->attrs[NL80211_ATTR_CQM];
7628 if (!cqm)
7629 return -EINVAL;
7630
7631 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7632 nl80211_attr_cqm_policy);
7633 if (err)
7634 return err;
7635
7636 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7637 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7638 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7639 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7640
7641 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7642 }
7643
7644 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7645 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7646 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7647 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7648 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7649 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7650
7651 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7652 }
7653
7654 return -EINVAL;
7655 }
7656
7657 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7658 {
7659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7660 struct net_device *dev = info->user_ptr[1];
7661 struct mesh_config cfg;
7662 struct mesh_setup setup;
7663 int err;
7664
7665 /* start with default */
7666 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7667 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7668
7669 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7670 /* and parse parameters if given */
7671 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7672 if (err)
7673 return err;
7674 }
7675
7676 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7677 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7678 return -EINVAL;
7679
7680 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7681 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7682
7683 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7684 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7685 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7686 return -EINVAL;
7687
7688 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7689 setup.beacon_interval =
7690 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7691 if (setup.beacon_interval < 10 ||
7692 setup.beacon_interval > 10000)
7693 return -EINVAL;
7694 }
7695
7696 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7697 setup.dtim_period =
7698 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7699 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7700 return -EINVAL;
7701 }
7702
7703 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7704 /* parse additional setup parameters if given */
7705 err = nl80211_parse_mesh_setup(info, &setup);
7706 if (err)
7707 return err;
7708 }
7709
7710 if (setup.user_mpm)
7711 cfg.auto_open_plinks = false;
7712
7713 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7714 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7715 if (err)
7716 return err;
7717 } else {
7718 /* cfg80211_join_mesh() will sort it out */
7719 setup.chandef.chan = NULL;
7720 }
7721
7722 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7723 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7724 int n_rates =
7725 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7726 struct ieee80211_supported_band *sband;
7727
7728 if (!setup.chandef.chan)
7729 return -EINVAL;
7730
7731 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7732
7733 err = ieee80211_get_ratemask(sband, rates, n_rates,
7734 &setup.basic_rates);
7735 if (err)
7736 return err;
7737 }
7738
7739 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7740 }
7741
7742 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7743 {
7744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7745 struct net_device *dev = info->user_ptr[1];
7746
7747 return cfg80211_leave_mesh(rdev, dev);
7748 }
7749
7750 #ifdef CONFIG_PM
7751 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7752 struct cfg80211_registered_device *rdev)
7753 {
7754 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7755 struct nlattr *nl_pats, *nl_pat;
7756 int i, pat_len;
7757
7758 if (!wowlan->n_patterns)
7759 return 0;
7760
7761 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7762 if (!nl_pats)
7763 return -ENOBUFS;
7764
7765 for (i = 0; i < wowlan->n_patterns; i++) {
7766 nl_pat = nla_nest_start(msg, i + 1);
7767 if (!nl_pat)
7768 return -ENOBUFS;
7769 pat_len = wowlan->patterns[i].pattern_len;
7770 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7771 wowlan->patterns[i].mask) ||
7772 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7773 wowlan->patterns[i].pattern) ||
7774 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7775 wowlan->patterns[i].pkt_offset))
7776 return -ENOBUFS;
7777 nla_nest_end(msg, nl_pat);
7778 }
7779 nla_nest_end(msg, nl_pats);
7780
7781 return 0;
7782 }
7783
7784 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7785 struct cfg80211_wowlan_tcp *tcp)
7786 {
7787 struct nlattr *nl_tcp;
7788
7789 if (!tcp)
7790 return 0;
7791
7792 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7793 if (!nl_tcp)
7794 return -ENOBUFS;
7795
7796 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7797 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7798 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7799 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7800 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7801 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7802 tcp->payload_len, tcp->payload) ||
7803 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7804 tcp->data_interval) ||
7805 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7806 tcp->wake_len, tcp->wake_data) ||
7807 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7808 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7809 return -ENOBUFS;
7810
7811 if (tcp->payload_seq.len &&
7812 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7813 sizeof(tcp->payload_seq), &tcp->payload_seq))
7814 return -ENOBUFS;
7815
7816 if (tcp->payload_tok.len &&
7817 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7818 sizeof(tcp->payload_tok) + tcp->tokens_size,
7819 &tcp->payload_tok))
7820 return -ENOBUFS;
7821
7822 nla_nest_end(msg, nl_tcp);
7823
7824 return 0;
7825 }
7826
7827 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7828 {
7829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7830 struct sk_buff *msg;
7831 void *hdr;
7832 u32 size = NLMSG_DEFAULT_SIZE;
7833
7834 if (!rdev->wiphy.wowlan)
7835 return -EOPNOTSUPP;
7836
7837 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7838 /* adjust size to have room for all the data */
7839 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7840 rdev->wiphy.wowlan_config->tcp->payload_len +
7841 rdev->wiphy.wowlan_config->tcp->wake_len +
7842 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7843 }
7844
7845 msg = nlmsg_new(size, GFP_KERNEL);
7846 if (!msg)
7847 return -ENOMEM;
7848
7849 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7850 NL80211_CMD_GET_WOWLAN);
7851 if (!hdr)
7852 goto nla_put_failure;
7853
7854 if (rdev->wiphy.wowlan_config) {
7855 struct nlattr *nl_wowlan;
7856
7857 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7858 if (!nl_wowlan)
7859 goto nla_put_failure;
7860
7861 if ((rdev->wiphy.wowlan_config->any &&
7862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7863 (rdev->wiphy.wowlan_config->disconnect &&
7864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7865 (rdev->wiphy.wowlan_config->magic_pkt &&
7866 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7867 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7868 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7869 (rdev->wiphy.wowlan_config->eap_identity_req &&
7870 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7871 (rdev->wiphy.wowlan_config->four_way_handshake &&
7872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7873 (rdev->wiphy.wowlan_config->rfkill_release &&
7874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7875 goto nla_put_failure;
7876
7877 if (nl80211_send_wowlan_patterns(msg, rdev))
7878 goto nla_put_failure;
7879
7880 if (nl80211_send_wowlan_tcp(msg,
7881 rdev->wiphy.wowlan_config->tcp))
7882 goto nla_put_failure;
7883
7884 nla_nest_end(msg, nl_wowlan);
7885 }
7886
7887 genlmsg_end(msg, hdr);
7888 return genlmsg_reply(msg, info);
7889
7890 nla_put_failure:
7891 nlmsg_free(msg);
7892 return -ENOBUFS;
7893 }
7894
7895 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7896 struct nlattr *attr,
7897 struct cfg80211_wowlan *trig)
7898 {
7899 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7900 struct cfg80211_wowlan_tcp *cfg;
7901 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7902 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7903 u32 size;
7904 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7905 int err, port;
7906
7907 if (!rdev->wiphy.wowlan->tcp)
7908 return -EINVAL;
7909
7910 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7911 nla_data(attr), nla_len(attr),
7912 nl80211_wowlan_tcp_policy);
7913 if (err)
7914 return err;
7915
7916 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7917 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7918 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7919 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7920 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7921 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7922 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7923 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7924 return -EINVAL;
7925
7926 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7927 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7928 return -EINVAL;
7929
7930 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7931 rdev->wiphy.wowlan->tcp->data_interval_max ||
7932 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7933 return -EINVAL;
7934
7935 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7936 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7937 return -EINVAL;
7938
7939 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7940 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7941 return -EINVAL;
7942
7943 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7944 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7945
7946 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7947 tokens_size = tokln - sizeof(*tok);
7948
7949 if (!tok->len || tokens_size % tok->len)
7950 return -EINVAL;
7951 if (!rdev->wiphy.wowlan->tcp->tok)
7952 return -EINVAL;
7953 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7954 return -EINVAL;
7955 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7956 return -EINVAL;
7957 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7958 return -EINVAL;
7959 if (tok->offset + tok->len > data_size)
7960 return -EINVAL;
7961 }
7962
7963 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7964 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7965 if (!rdev->wiphy.wowlan->tcp->seq)
7966 return -EINVAL;
7967 if (seq->len == 0 || seq->len > 4)
7968 return -EINVAL;
7969 if (seq->len + seq->offset > data_size)
7970 return -EINVAL;
7971 }
7972
7973 size = sizeof(*cfg);
7974 size += data_size;
7975 size += wake_size + wake_mask_size;
7976 size += tokens_size;
7977
7978 cfg = kzalloc(size, GFP_KERNEL);
7979 if (!cfg)
7980 return -ENOMEM;
7981 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7982 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7983 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7984 ETH_ALEN);
7985 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7986 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7987 else
7988 port = 0;
7989 #ifdef CONFIG_INET
7990 /* allocate a socket and port for it and use it */
7991 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7992 IPPROTO_TCP, &cfg->sock, 1);
7993 if (err) {
7994 kfree(cfg);
7995 return err;
7996 }
7997 if (inet_csk_get_port(cfg->sock->sk, port)) {
7998 sock_release(cfg->sock);
7999 kfree(cfg);
8000 return -EADDRINUSE;
8001 }
8002 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8003 #else
8004 if (!port) {
8005 kfree(cfg);
8006 return -EINVAL;
8007 }
8008 cfg->src_port = port;
8009 #endif
8010
8011 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8012 cfg->payload_len = data_size;
8013 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8014 memcpy((void *)cfg->payload,
8015 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8016 data_size);
8017 if (seq)
8018 cfg->payload_seq = *seq;
8019 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8020 cfg->wake_len = wake_size;
8021 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8022 memcpy((void *)cfg->wake_data,
8023 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8024 wake_size);
8025 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8026 data_size + wake_size;
8027 memcpy((void *)cfg->wake_mask,
8028 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8029 wake_mask_size);
8030 if (tok) {
8031 cfg->tokens_size = tokens_size;
8032 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8033 }
8034
8035 trig->tcp = cfg;
8036
8037 return 0;
8038 }
8039
8040 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8041 {
8042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8043 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8044 struct cfg80211_wowlan new_triggers = {};
8045 struct cfg80211_wowlan *ntrig;
8046 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8047 int err, i;
8048 bool prev_enabled = rdev->wiphy.wowlan_config;
8049
8050 if (!wowlan)
8051 return -EOPNOTSUPP;
8052
8053 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8054 cfg80211_rdev_free_wowlan(rdev);
8055 rdev->wiphy.wowlan_config = NULL;
8056 goto set_wakeup;
8057 }
8058
8059 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8060 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8061 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8062 nl80211_wowlan_policy);
8063 if (err)
8064 return err;
8065
8066 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8067 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8068 return -EINVAL;
8069 new_triggers.any = true;
8070 }
8071
8072 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8073 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8074 return -EINVAL;
8075 new_triggers.disconnect = true;
8076 }
8077
8078 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8079 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8080 return -EINVAL;
8081 new_triggers.magic_pkt = true;
8082 }
8083
8084 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8085 return -EINVAL;
8086
8087 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8088 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8089 return -EINVAL;
8090 new_triggers.gtk_rekey_failure = true;
8091 }
8092
8093 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8094 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8095 return -EINVAL;
8096 new_triggers.eap_identity_req = true;
8097 }
8098
8099 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8100 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8101 return -EINVAL;
8102 new_triggers.four_way_handshake = true;
8103 }
8104
8105 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8106 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8107 return -EINVAL;
8108 new_triggers.rfkill_release = true;
8109 }
8110
8111 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8112 struct nlattr *pat;
8113 int n_patterns = 0;
8114 int rem, pat_len, mask_len, pkt_offset;
8115 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8116
8117 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8118 rem)
8119 n_patterns++;
8120 if (n_patterns > wowlan->n_patterns)
8121 return -EINVAL;
8122
8123 new_triggers.patterns = kcalloc(n_patterns,
8124 sizeof(new_triggers.patterns[0]),
8125 GFP_KERNEL);
8126 if (!new_triggers.patterns)
8127 return -ENOMEM;
8128
8129 new_triggers.n_patterns = n_patterns;
8130 i = 0;
8131
8132 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8133 rem) {
8134 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8135 nla_len(pat), NULL);
8136 err = -EINVAL;
8137 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8138 !pat_tb[NL80211_PKTPAT_PATTERN])
8139 goto error;
8140 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8141 mask_len = DIV_ROUND_UP(pat_len, 8);
8142 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8143 goto error;
8144 if (pat_len > wowlan->pattern_max_len ||
8145 pat_len < wowlan->pattern_min_len)
8146 goto error;
8147
8148 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8149 pkt_offset = 0;
8150 else
8151 pkt_offset = nla_get_u32(
8152 pat_tb[NL80211_PKTPAT_OFFSET]);
8153 if (pkt_offset > wowlan->max_pkt_offset)
8154 goto error;
8155 new_triggers.patterns[i].pkt_offset = pkt_offset;
8156
8157 new_triggers.patterns[i].mask =
8158 kmalloc(mask_len + pat_len, GFP_KERNEL);
8159 if (!new_triggers.patterns[i].mask) {
8160 err = -ENOMEM;
8161 goto error;
8162 }
8163 new_triggers.patterns[i].pattern =
8164 new_triggers.patterns[i].mask + mask_len;
8165 memcpy(new_triggers.patterns[i].mask,
8166 nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8167 mask_len);
8168 new_triggers.patterns[i].pattern_len = pat_len;
8169 memcpy(new_triggers.patterns[i].pattern,
8170 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8171 pat_len);
8172 i++;
8173 }
8174 }
8175
8176 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8177 err = nl80211_parse_wowlan_tcp(
8178 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8179 &new_triggers);
8180 if (err)
8181 goto error;
8182 }
8183
8184 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8185 if (!ntrig) {
8186 err = -ENOMEM;
8187 goto error;
8188 }
8189 cfg80211_rdev_free_wowlan(rdev);
8190 rdev->wiphy.wowlan_config = ntrig;
8191
8192 set_wakeup:
8193 if (rdev->ops->set_wakeup &&
8194 prev_enabled != !!rdev->wiphy.wowlan_config)
8195 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8196
8197 return 0;
8198 error:
8199 for (i = 0; i < new_triggers.n_patterns; i++)
8200 kfree(new_triggers.patterns[i].mask);
8201 kfree(new_triggers.patterns);
8202 if (new_triggers.tcp && new_triggers.tcp->sock)
8203 sock_release(new_triggers.tcp->sock);
8204 kfree(new_triggers.tcp);
8205 return err;
8206 }
8207 #endif
8208
8209 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8210 struct cfg80211_registered_device *rdev)
8211 {
8212 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8213 int i, j, pat_len;
8214 struct cfg80211_coalesce_rules *rule;
8215
8216 if (!rdev->coalesce->n_rules)
8217 return 0;
8218
8219 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8220 if (!nl_rules)
8221 return -ENOBUFS;
8222
8223 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8224 nl_rule = nla_nest_start(msg, i + 1);
8225 if (!nl_rule)
8226 return -ENOBUFS;
8227
8228 rule = &rdev->coalesce->rules[i];
8229 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8230 rule->delay))
8231 return -ENOBUFS;
8232
8233 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8234 rule->condition))
8235 return -ENOBUFS;
8236
8237 nl_pats = nla_nest_start(msg,
8238 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8239 if (!nl_pats)
8240 return -ENOBUFS;
8241
8242 for (j = 0; j < rule->n_patterns; j++) {
8243 nl_pat = nla_nest_start(msg, j + 1);
8244 if (!nl_pat)
8245 return -ENOBUFS;
8246 pat_len = rule->patterns[j].pattern_len;
8247 if (nla_put(msg, NL80211_PKTPAT_MASK,
8248 DIV_ROUND_UP(pat_len, 8),
8249 rule->patterns[j].mask) ||
8250 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8251 rule->patterns[j].pattern) ||
8252 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8253 rule->patterns[j].pkt_offset))
8254 return -ENOBUFS;
8255 nla_nest_end(msg, nl_pat);
8256 }
8257 nla_nest_end(msg, nl_pats);
8258 nla_nest_end(msg, nl_rule);
8259 }
8260 nla_nest_end(msg, nl_rules);
8261
8262 return 0;
8263 }
8264
8265 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8266 {
8267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8268 struct sk_buff *msg;
8269 void *hdr;
8270
8271 if (!rdev->wiphy.coalesce)
8272 return -EOPNOTSUPP;
8273
8274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8275 if (!msg)
8276 return -ENOMEM;
8277
8278 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8279 NL80211_CMD_GET_COALESCE);
8280 if (!hdr)
8281 goto nla_put_failure;
8282
8283 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8284 goto nla_put_failure;
8285
8286 genlmsg_end(msg, hdr);
8287 return genlmsg_reply(msg, info);
8288
8289 nla_put_failure:
8290 nlmsg_free(msg);
8291 return -ENOBUFS;
8292 }
8293
8294 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8295 {
8296 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8297 int i, j;
8298 struct cfg80211_coalesce_rules *rule;
8299
8300 if (!coalesce)
8301 return;
8302
8303 for (i = 0; i < coalesce->n_rules; i++) {
8304 rule = &coalesce->rules[i];
8305 for (j = 0; j < rule->n_patterns; j++)
8306 kfree(rule->patterns[j].mask);
8307 kfree(rule->patterns);
8308 }
8309 kfree(coalesce->rules);
8310 kfree(coalesce);
8311 rdev->coalesce = NULL;
8312 }
8313
8314 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8315 struct nlattr *rule,
8316 struct cfg80211_coalesce_rules *new_rule)
8317 {
8318 int err, i;
8319 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8320 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8321 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8322 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8323
8324 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8325 nla_len(rule), nl80211_coalesce_policy);
8326 if (err)
8327 return err;
8328
8329 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8330 new_rule->delay =
8331 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8332 if (new_rule->delay > coalesce->max_delay)
8333 return -EINVAL;
8334
8335 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8336 new_rule->condition =
8337 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8338 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8339 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8340 return -EINVAL;
8341
8342 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8343 return -EINVAL;
8344
8345 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8346 rem)
8347 n_patterns++;
8348 if (n_patterns > coalesce->n_patterns)
8349 return -EINVAL;
8350
8351 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8352 GFP_KERNEL);
8353 if (!new_rule->patterns)
8354 return -ENOMEM;
8355
8356 new_rule->n_patterns = n_patterns;
8357 i = 0;
8358
8359 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8360 rem) {
8361 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8362 nla_len(pat), NULL);
8363 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8364 !pat_tb[NL80211_PKTPAT_PATTERN])
8365 return -EINVAL;
8366 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8367 mask_len = DIV_ROUND_UP(pat_len, 8);
8368 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8369 return -EINVAL;
8370 if (pat_len > coalesce->pattern_max_len ||
8371 pat_len < coalesce->pattern_min_len)
8372 return -EINVAL;
8373
8374 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8375 pkt_offset = 0;
8376 else
8377 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8378 if (pkt_offset > coalesce->max_pkt_offset)
8379 return -EINVAL;
8380 new_rule->patterns[i].pkt_offset = pkt_offset;
8381
8382 new_rule->patterns[i].mask =
8383 kmalloc(mask_len + pat_len, GFP_KERNEL);
8384 if (!new_rule->patterns[i].mask)
8385 return -ENOMEM;
8386 new_rule->patterns[i].pattern =
8387 new_rule->patterns[i].mask + mask_len;
8388 memcpy(new_rule->patterns[i].mask,
8389 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8390 new_rule->patterns[i].pattern_len = pat_len;
8391 memcpy(new_rule->patterns[i].pattern,
8392 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8393 i++;
8394 }
8395
8396 return 0;
8397 }
8398
8399 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8400 {
8401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8402 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8403 struct cfg80211_coalesce new_coalesce = {};
8404 struct cfg80211_coalesce *n_coalesce;
8405 int err, rem_rule, n_rules = 0, i, j;
8406 struct nlattr *rule;
8407 struct cfg80211_coalesce_rules *tmp_rule;
8408
8409 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8410 return -EOPNOTSUPP;
8411
8412 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8413 cfg80211_rdev_free_coalesce(rdev);
8414 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8415 return 0;
8416 }
8417
8418 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8419 rem_rule)
8420 n_rules++;
8421 if (n_rules > coalesce->n_rules)
8422 return -EINVAL;
8423
8424 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8425 GFP_KERNEL);
8426 if (!new_coalesce.rules)
8427 return -ENOMEM;
8428
8429 new_coalesce.n_rules = n_rules;
8430 i = 0;
8431
8432 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8433 rem_rule) {
8434 err = nl80211_parse_coalesce_rule(rdev, rule,
8435 &new_coalesce.rules[i]);
8436 if (err)
8437 goto error;
8438
8439 i++;
8440 }
8441
8442 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8443 if (err)
8444 goto error;
8445
8446 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8447 if (!n_coalesce) {
8448 err = -ENOMEM;
8449 goto error;
8450 }
8451 cfg80211_rdev_free_coalesce(rdev);
8452 rdev->coalesce = n_coalesce;
8453
8454 return 0;
8455 error:
8456 for (i = 0; i < new_coalesce.n_rules; i++) {
8457 tmp_rule = &new_coalesce.rules[i];
8458 for (j = 0; j < tmp_rule->n_patterns; j++)
8459 kfree(tmp_rule->patterns[j].mask);
8460 kfree(tmp_rule->patterns);
8461 }
8462 kfree(new_coalesce.rules);
8463
8464 return err;
8465 }
8466
8467 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8468 {
8469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8470 struct net_device *dev = info->user_ptr[1];
8471 struct wireless_dev *wdev = dev->ieee80211_ptr;
8472 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8473 struct cfg80211_gtk_rekey_data rekey_data;
8474 int err;
8475
8476 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8477 return -EINVAL;
8478
8479 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8480 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8481 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8482 nl80211_rekey_policy);
8483 if (err)
8484 return err;
8485
8486 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8487 return -ERANGE;
8488 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8489 return -ERANGE;
8490 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8491 return -ERANGE;
8492
8493 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8494 NL80211_KEK_LEN);
8495 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8496 NL80211_KCK_LEN);
8497 memcpy(rekey_data.replay_ctr,
8498 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8499 NL80211_REPLAY_CTR_LEN);
8500
8501 wdev_lock(wdev);
8502 if (!wdev->current_bss) {
8503 err = -ENOTCONN;
8504 goto out;
8505 }
8506
8507 if (!rdev->ops->set_rekey_data) {
8508 err = -EOPNOTSUPP;
8509 goto out;
8510 }
8511
8512 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8513 out:
8514 wdev_unlock(wdev);
8515 return err;
8516 }
8517
8518 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8519 struct genl_info *info)
8520 {
8521 struct net_device *dev = info->user_ptr[1];
8522 struct wireless_dev *wdev = dev->ieee80211_ptr;
8523
8524 if (wdev->iftype != NL80211_IFTYPE_AP &&
8525 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8526 return -EINVAL;
8527
8528 if (wdev->ap_unexpected_nlportid)
8529 return -EBUSY;
8530
8531 wdev->ap_unexpected_nlportid = info->snd_portid;
8532 return 0;
8533 }
8534
8535 static int nl80211_probe_client(struct sk_buff *skb,
8536 struct genl_info *info)
8537 {
8538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8539 struct net_device *dev = info->user_ptr[1];
8540 struct wireless_dev *wdev = dev->ieee80211_ptr;
8541 struct sk_buff *msg;
8542 void *hdr;
8543 const u8 *addr;
8544 u64 cookie;
8545 int err;
8546
8547 if (wdev->iftype != NL80211_IFTYPE_AP &&
8548 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8549 return -EOPNOTSUPP;
8550
8551 if (!info->attrs[NL80211_ATTR_MAC])
8552 return -EINVAL;
8553
8554 if (!rdev->ops->probe_client)
8555 return -EOPNOTSUPP;
8556
8557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8558 if (!msg)
8559 return -ENOMEM;
8560
8561 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8562 NL80211_CMD_PROBE_CLIENT);
8563 if (!hdr) {
8564 err = -ENOBUFS;
8565 goto free_msg;
8566 }
8567
8568 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8569
8570 err = rdev_probe_client(rdev, dev, addr, &cookie);
8571 if (err)
8572 goto free_msg;
8573
8574 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8575 goto nla_put_failure;
8576
8577 genlmsg_end(msg, hdr);
8578
8579 return genlmsg_reply(msg, info);
8580
8581 nla_put_failure:
8582 err = -ENOBUFS;
8583 free_msg:
8584 nlmsg_free(msg);
8585 return err;
8586 }
8587
8588 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8589 {
8590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8591 struct cfg80211_beacon_registration *reg, *nreg;
8592 int rv;
8593
8594 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8595 return -EOPNOTSUPP;
8596
8597 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8598 if (!nreg)
8599 return -ENOMEM;
8600
8601 /* First, check if already registered. */
8602 spin_lock_bh(&rdev->beacon_registrations_lock);
8603 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8604 if (reg->nlportid == info->snd_portid) {
8605 rv = -EALREADY;
8606 goto out_err;
8607 }
8608 }
8609 /* Add it to the list */
8610 nreg->nlportid = info->snd_portid;
8611 list_add(&nreg->list, &rdev->beacon_registrations);
8612
8613 spin_unlock_bh(&rdev->beacon_registrations_lock);
8614
8615 return 0;
8616 out_err:
8617 spin_unlock_bh(&rdev->beacon_registrations_lock);
8618 kfree(nreg);
8619 return rv;
8620 }
8621
8622 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8623 {
8624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8625 struct wireless_dev *wdev = info->user_ptr[1];
8626 int err;
8627
8628 if (!rdev->ops->start_p2p_device)
8629 return -EOPNOTSUPP;
8630
8631 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8632 return -EOPNOTSUPP;
8633
8634 if (wdev->p2p_started)
8635 return 0;
8636
8637 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8638 if (err)
8639 return err;
8640
8641 err = rdev_start_p2p_device(rdev, wdev);
8642 if (err)
8643 return err;
8644
8645 wdev->p2p_started = true;
8646 rdev->opencount++;
8647
8648 return 0;
8649 }
8650
8651 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8652 {
8653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8654 struct wireless_dev *wdev = info->user_ptr[1];
8655
8656 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8657 return -EOPNOTSUPP;
8658
8659 if (!rdev->ops->stop_p2p_device)
8660 return -EOPNOTSUPP;
8661
8662 cfg80211_stop_p2p_device(rdev, wdev);
8663
8664 return 0;
8665 }
8666
8667 static int nl80211_get_protocol_features(struct sk_buff *skb,
8668 struct genl_info *info)
8669 {
8670 void *hdr;
8671 struct sk_buff *msg;
8672
8673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8674 if (!msg)
8675 return -ENOMEM;
8676
8677 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8678 NL80211_CMD_GET_PROTOCOL_FEATURES);
8679 if (!hdr)
8680 goto nla_put_failure;
8681
8682 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8683 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8684 goto nla_put_failure;
8685
8686 genlmsg_end(msg, hdr);
8687 return genlmsg_reply(msg, info);
8688
8689 nla_put_failure:
8690 kfree_skb(msg);
8691 return -ENOBUFS;
8692 }
8693
8694 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8695 {
8696 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8697 struct cfg80211_update_ft_ies_params ft_params;
8698 struct net_device *dev = info->user_ptr[1];
8699
8700 if (!rdev->ops->update_ft_ies)
8701 return -EOPNOTSUPP;
8702
8703 if (!info->attrs[NL80211_ATTR_MDID] ||
8704 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8705 return -EINVAL;
8706
8707 memset(&ft_params, 0, sizeof(ft_params));
8708 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8709 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8710 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8711
8712 return rdev_update_ft_ies(rdev, dev, &ft_params);
8713 }
8714
8715 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8716 struct genl_info *info)
8717 {
8718 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8719 struct wireless_dev *wdev = info->user_ptr[1];
8720 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8721 u16 duration;
8722 int ret;
8723
8724 if (!rdev->ops->crit_proto_start)
8725 return -EOPNOTSUPP;
8726
8727 if (WARN_ON(!rdev->ops->crit_proto_stop))
8728 return -EINVAL;
8729
8730 if (rdev->crit_proto_nlportid)
8731 return -EBUSY;
8732
8733 /* determine protocol if provided */
8734 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8735 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8736
8737 if (proto >= NUM_NL80211_CRIT_PROTO)
8738 return -EINVAL;
8739
8740 /* timeout must be provided */
8741 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8742 return -EINVAL;
8743
8744 duration =
8745 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8746
8747 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8748 return -ERANGE;
8749
8750 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8751 if (!ret)
8752 rdev->crit_proto_nlportid = info->snd_portid;
8753
8754 return ret;
8755 }
8756
8757 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8758 struct genl_info *info)
8759 {
8760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8761 struct wireless_dev *wdev = info->user_ptr[1];
8762
8763 if (!rdev->ops->crit_proto_stop)
8764 return -EOPNOTSUPP;
8765
8766 if (rdev->crit_proto_nlportid) {
8767 rdev->crit_proto_nlportid = 0;
8768 rdev_crit_proto_stop(rdev, wdev);
8769 }
8770 return 0;
8771 }
8772
8773 #define NL80211_FLAG_NEED_WIPHY 0x01
8774 #define NL80211_FLAG_NEED_NETDEV 0x02
8775 #define NL80211_FLAG_NEED_RTNL 0x04
8776 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8777 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8778 NL80211_FLAG_CHECK_NETDEV_UP)
8779 #define NL80211_FLAG_NEED_WDEV 0x10
8780 /* If a netdev is associated, it must be UP, P2P must be started */
8781 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8782 NL80211_FLAG_CHECK_NETDEV_UP)
8783
8784 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8785 struct genl_info *info)
8786 {
8787 struct cfg80211_registered_device *rdev;
8788 struct wireless_dev *wdev;
8789 struct net_device *dev;
8790 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8791
8792 if (rtnl)
8793 rtnl_lock();
8794
8795 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8796 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8797 if (IS_ERR(rdev)) {
8798 if (rtnl)
8799 rtnl_unlock();
8800 return PTR_ERR(rdev);
8801 }
8802 info->user_ptr[0] = rdev;
8803 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8804 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8805 ASSERT_RTNL();
8806
8807 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8808 info->attrs);
8809 if (IS_ERR(wdev)) {
8810 if (rtnl)
8811 rtnl_unlock();
8812 return PTR_ERR(wdev);
8813 }
8814
8815 dev = wdev->netdev;
8816 rdev = wiphy_to_dev(wdev->wiphy);
8817
8818 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8819 if (!dev) {
8820 if (rtnl)
8821 rtnl_unlock();
8822 return -EINVAL;
8823 }
8824
8825 info->user_ptr[1] = dev;
8826 } else {
8827 info->user_ptr[1] = wdev;
8828 }
8829
8830 if (dev) {
8831 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8832 !netif_running(dev)) {
8833 if (rtnl)
8834 rtnl_unlock();
8835 return -ENETDOWN;
8836 }
8837
8838 dev_hold(dev);
8839 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8840 if (!wdev->p2p_started) {
8841 if (rtnl)
8842 rtnl_unlock();
8843 return -ENETDOWN;
8844 }
8845 }
8846
8847 info->user_ptr[0] = rdev;
8848 }
8849
8850 return 0;
8851 }
8852
8853 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8854 struct genl_info *info)
8855 {
8856 if (info->user_ptr[1]) {
8857 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8858 struct wireless_dev *wdev = info->user_ptr[1];
8859
8860 if (wdev->netdev)
8861 dev_put(wdev->netdev);
8862 } else {
8863 dev_put(info->user_ptr[1]);
8864 }
8865 }
8866 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8867 rtnl_unlock();
8868 }
8869
8870 static struct genl_ops nl80211_ops[] = {
8871 {
8872 .cmd = NL80211_CMD_GET_WIPHY,
8873 .doit = nl80211_get_wiphy,
8874 .dumpit = nl80211_dump_wiphy,
8875 .done = nl80211_dump_wiphy_done,
8876 .policy = nl80211_policy,
8877 /* can be retrieved by unprivileged users */
8878 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8879 NL80211_FLAG_NEED_RTNL,
8880 },
8881 {
8882 .cmd = NL80211_CMD_SET_WIPHY,
8883 .doit = nl80211_set_wiphy,
8884 .policy = nl80211_policy,
8885 .flags = GENL_ADMIN_PERM,
8886 .internal_flags = NL80211_FLAG_NEED_RTNL,
8887 },
8888 {
8889 .cmd = NL80211_CMD_GET_INTERFACE,
8890 .doit = nl80211_get_interface,
8891 .dumpit = nl80211_dump_interface,
8892 .policy = nl80211_policy,
8893 /* can be retrieved by unprivileged users */
8894 .internal_flags = NL80211_FLAG_NEED_WDEV |
8895 NL80211_FLAG_NEED_RTNL,
8896 },
8897 {
8898 .cmd = NL80211_CMD_SET_INTERFACE,
8899 .doit = nl80211_set_interface,
8900 .policy = nl80211_policy,
8901 .flags = GENL_ADMIN_PERM,
8902 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8903 NL80211_FLAG_NEED_RTNL,
8904 },
8905 {
8906 .cmd = NL80211_CMD_NEW_INTERFACE,
8907 .doit = nl80211_new_interface,
8908 .policy = nl80211_policy,
8909 .flags = GENL_ADMIN_PERM,
8910 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8911 NL80211_FLAG_NEED_RTNL,
8912 },
8913 {
8914 .cmd = NL80211_CMD_DEL_INTERFACE,
8915 .doit = nl80211_del_interface,
8916 .policy = nl80211_policy,
8917 .flags = GENL_ADMIN_PERM,
8918 .internal_flags = NL80211_FLAG_NEED_WDEV |
8919 NL80211_FLAG_NEED_RTNL,
8920 },
8921 {
8922 .cmd = NL80211_CMD_GET_KEY,
8923 .doit = nl80211_get_key,
8924 .policy = nl80211_policy,
8925 .flags = GENL_ADMIN_PERM,
8926 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8927 NL80211_FLAG_NEED_RTNL,
8928 },
8929 {
8930 .cmd = NL80211_CMD_SET_KEY,
8931 .doit = nl80211_set_key,
8932 .policy = nl80211_policy,
8933 .flags = GENL_ADMIN_PERM,
8934 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8935 NL80211_FLAG_NEED_RTNL,
8936 },
8937 {
8938 .cmd = NL80211_CMD_NEW_KEY,
8939 .doit = nl80211_new_key,
8940 .policy = nl80211_policy,
8941 .flags = GENL_ADMIN_PERM,
8942 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8943 NL80211_FLAG_NEED_RTNL,
8944 },
8945 {
8946 .cmd = NL80211_CMD_DEL_KEY,
8947 .doit = nl80211_del_key,
8948 .policy = nl80211_policy,
8949 .flags = GENL_ADMIN_PERM,
8950 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8951 NL80211_FLAG_NEED_RTNL,
8952 },
8953 {
8954 .cmd = NL80211_CMD_SET_BEACON,
8955 .policy = nl80211_policy,
8956 .flags = GENL_ADMIN_PERM,
8957 .doit = nl80211_set_beacon,
8958 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8959 NL80211_FLAG_NEED_RTNL,
8960 },
8961 {
8962 .cmd = NL80211_CMD_START_AP,
8963 .policy = nl80211_policy,
8964 .flags = GENL_ADMIN_PERM,
8965 .doit = nl80211_start_ap,
8966 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8967 NL80211_FLAG_NEED_RTNL,
8968 },
8969 {
8970 .cmd = NL80211_CMD_STOP_AP,
8971 .policy = nl80211_policy,
8972 .flags = GENL_ADMIN_PERM,
8973 .doit = nl80211_stop_ap,
8974 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8975 NL80211_FLAG_NEED_RTNL,
8976 },
8977 {
8978 .cmd = NL80211_CMD_GET_STATION,
8979 .doit = nl80211_get_station,
8980 .dumpit = nl80211_dump_station,
8981 .policy = nl80211_policy,
8982 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8983 NL80211_FLAG_NEED_RTNL,
8984 },
8985 {
8986 .cmd = NL80211_CMD_SET_STATION,
8987 .doit = nl80211_set_station,
8988 .policy = nl80211_policy,
8989 .flags = GENL_ADMIN_PERM,
8990 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8991 NL80211_FLAG_NEED_RTNL,
8992 },
8993 {
8994 .cmd = NL80211_CMD_NEW_STATION,
8995 .doit = nl80211_new_station,
8996 .policy = nl80211_policy,
8997 .flags = GENL_ADMIN_PERM,
8998 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8999 NL80211_FLAG_NEED_RTNL,
9000 },
9001 {
9002 .cmd = NL80211_CMD_DEL_STATION,
9003 .doit = nl80211_del_station,
9004 .policy = nl80211_policy,
9005 .flags = GENL_ADMIN_PERM,
9006 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9007 NL80211_FLAG_NEED_RTNL,
9008 },
9009 {
9010 .cmd = NL80211_CMD_GET_MPATH,
9011 .doit = nl80211_get_mpath,
9012 .dumpit = nl80211_dump_mpath,
9013 .policy = nl80211_policy,
9014 .flags = GENL_ADMIN_PERM,
9015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9016 NL80211_FLAG_NEED_RTNL,
9017 },
9018 {
9019 .cmd = NL80211_CMD_SET_MPATH,
9020 .doit = nl80211_set_mpath,
9021 .policy = nl80211_policy,
9022 .flags = GENL_ADMIN_PERM,
9023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9024 NL80211_FLAG_NEED_RTNL,
9025 },
9026 {
9027 .cmd = NL80211_CMD_NEW_MPATH,
9028 .doit = nl80211_new_mpath,
9029 .policy = nl80211_policy,
9030 .flags = GENL_ADMIN_PERM,
9031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9032 NL80211_FLAG_NEED_RTNL,
9033 },
9034 {
9035 .cmd = NL80211_CMD_DEL_MPATH,
9036 .doit = nl80211_del_mpath,
9037 .policy = nl80211_policy,
9038 .flags = GENL_ADMIN_PERM,
9039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9040 NL80211_FLAG_NEED_RTNL,
9041 },
9042 {
9043 .cmd = NL80211_CMD_SET_BSS,
9044 .doit = nl80211_set_bss,
9045 .policy = nl80211_policy,
9046 .flags = GENL_ADMIN_PERM,
9047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9048 NL80211_FLAG_NEED_RTNL,
9049 },
9050 {
9051 .cmd = NL80211_CMD_GET_REG,
9052 .doit = nl80211_get_reg,
9053 .policy = nl80211_policy,
9054 .internal_flags = NL80211_FLAG_NEED_RTNL,
9055 /* can be retrieved by unprivileged users */
9056 },
9057 {
9058 .cmd = NL80211_CMD_SET_REG,
9059 .doit = nl80211_set_reg,
9060 .policy = nl80211_policy,
9061 .flags = GENL_ADMIN_PERM,
9062 .internal_flags = NL80211_FLAG_NEED_RTNL,
9063 },
9064 {
9065 .cmd = NL80211_CMD_REQ_SET_REG,
9066 .doit = nl80211_req_set_reg,
9067 .policy = nl80211_policy,
9068 .flags = GENL_ADMIN_PERM,
9069 },
9070 {
9071 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9072 .doit = nl80211_get_mesh_config,
9073 .policy = nl80211_policy,
9074 /* can be retrieved by unprivileged users */
9075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9076 NL80211_FLAG_NEED_RTNL,
9077 },
9078 {
9079 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9080 .doit = nl80211_update_mesh_config,
9081 .policy = nl80211_policy,
9082 .flags = GENL_ADMIN_PERM,
9083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9084 NL80211_FLAG_NEED_RTNL,
9085 },
9086 {
9087 .cmd = NL80211_CMD_TRIGGER_SCAN,
9088 .doit = nl80211_trigger_scan,
9089 .policy = nl80211_policy,
9090 .flags = GENL_ADMIN_PERM,
9091 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9092 NL80211_FLAG_NEED_RTNL,
9093 },
9094 {
9095 .cmd = NL80211_CMD_GET_SCAN,
9096 .policy = nl80211_policy,
9097 .dumpit = nl80211_dump_scan,
9098 },
9099 {
9100 .cmd = NL80211_CMD_START_SCHED_SCAN,
9101 .doit = nl80211_start_sched_scan,
9102 .policy = nl80211_policy,
9103 .flags = GENL_ADMIN_PERM,
9104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9105 NL80211_FLAG_NEED_RTNL,
9106 },
9107 {
9108 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9109 .doit = nl80211_stop_sched_scan,
9110 .policy = nl80211_policy,
9111 .flags = GENL_ADMIN_PERM,
9112 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9113 NL80211_FLAG_NEED_RTNL,
9114 },
9115 {
9116 .cmd = NL80211_CMD_AUTHENTICATE,
9117 .doit = nl80211_authenticate,
9118 .policy = nl80211_policy,
9119 .flags = GENL_ADMIN_PERM,
9120 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9121 NL80211_FLAG_NEED_RTNL,
9122 },
9123 {
9124 .cmd = NL80211_CMD_ASSOCIATE,
9125 .doit = nl80211_associate,
9126 .policy = nl80211_policy,
9127 .flags = GENL_ADMIN_PERM,
9128 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9129 NL80211_FLAG_NEED_RTNL,
9130 },
9131 {
9132 .cmd = NL80211_CMD_DEAUTHENTICATE,
9133 .doit = nl80211_deauthenticate,
9134 .policy = nl80211_policy,
9135 .flags = GENL_ADMIN_PERM,
9136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9137 NL80211_FLAG_NEED_RTNL,
9138 },
9139 {
9140 .cmd = NL80211_CMD_DISASSOCIATE,
9141 .doit = nl80211_disassociate,
9142 .policy = nl80211_policy,
9143 .flags = GENL_ADMIN_PERM,
9144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9145 NL80211_FLAG_NEED_RTNL,
9146 },
9147 {
9148 .cmd = NL80211_CMD_JOIN_IBSS,
9149 .doit = nl80211_join_ibss,
9150 .policy = nl80211_policy,
9151 .flags = GENL_ADMIN_PERM,
9152 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9153 NL80211_FLAG_NEED_RTNL,
9154 },
9155 {
9156 .cmd = NL80211_CMD_LEAVE_IBSS,
9157 .doit = nl80211_leave_ibss,
9158 .policy = nl80211_policy,
9159 .flags = GENL_ADMIN_PERM,
9160 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9161 NL80211_FLAG_NEED_RTNL,
9162 },
9163 #ifdef CONFIG_NL80211_TESTMODE
9164 {
9165 .cmd = NL80211_CMD_TESTMODE,
9166 .doit = nl80211_testmode_do,
9167 .dumpit = nl80211_testmode_dump,
9168 .policy = nl80211_policy,
9169 .flags = GENL_ADMIN_PERM,
9170 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9171 NL80211_FLAG_NEED_RTNL,
9172 },
9173 #endif
9174 {
9175 .cmd = NL80211_CMD_CONNECT,
9176 .doit = nl80211_connect,
9177 .policy = nl80211_policy,
9178 .flags = GENL_ADMIN_PERM,
9179 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9180 NL80211_FLAG_NEED_RTNL,
9181 },
9182 {
9183 .cmd = NL80211_CMD_DISCONNECT,
9184 .doit = nl80211_disconnect,
9185 .policy = nl80211_policy,
9186 .flags = GENL_ADMIN_PERM,
9187 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9188 NL80211_FLAG_NEED_RTNL,
9189 },
9190 {
9191 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9192 .doit = nl80211_wiphy_netns,
9193 .policy = nl80211_policy,
9194 .flags = GENL_ADMIN_PERM,
9195 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9196 NL80211_FLAG_NEED_RTNL,
9197 },
9198 {
9199 .cmd = NL80211_CMD_GET_SURVEY,
9200 .policy = nl80211_policy,
9201 .dumpit = nl80211_dump_survey,
9202 },
9203 {
9204 .cmd = NL80211_CMD_SET_PMKSA,
9205 .doit = nl80211_setdel_pmksa,
9206 .policy = nl80211_policy,
9207 .flags = GENL_ADMIN_PERM,
9208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9209 NL80211_FLAG_NEED_RTNL,
9210 },
9211 {
9212 .cmd = NL80211_CMD_DEL_PMKSA,
9213 .doit = nl80211_setdel_pmksa,
9214 .policy = nl80211_policy,
9215 .flags = GENL_ADMIN_PERM,
9216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9217 NL80211_FLAG_NEED_RTNL,
9218 },
9219 {
9220 .cmd = NL80211_CMD_FLUSH_PMKSA,
9221 .doit = nl80211_flush_pmksa,
9222 .policy = nl80211_policy,
9223 .flags = GENL_ADMIN_PERM,
9224 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9225 NL80211_FLAG_NEED_RTNL,
9226 },
9227 {
9228 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9229 .doit = nl80211_remain_on_channel,
9230 .policy = nl80211_policy,
9231 .flags = GENL_ADMIN_PERM,
9232 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9233 NL80211_FLAG_NEED_RTNL,
9234 },
9235 {
9236 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9237 .doit = nl80211_cancel_remain_on_channel,
9238 .policy = nl80211_policy,
9239 .flags = GENL_ADMIN_PERM,
9240 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9241 NL80211_FLAG_NEED_RTNL,
9242 },
9243 {
9244 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9245 .doit = nl80211_set_tx_bitrate_mask,
9246 .policy = nl80211_policy,
9247 .flags = GENL_ADMIN_PERM,
9248 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9249 NL80211_FLAG_NEED_RTNL,
9250 },
9251 {
9252 .cmd = NL80211_CMD_REGISTER_FRAME,
9253 .doit = nl80211_register_mgmt,
9254 .policy = nl80211_policy,
9255 .flags = GENL_ADMIN_PERM,
9256 .internal_flags = NL80211_FLAG_NEED_WDEV |
9257 NL80211_FLAG_NEED_RTNL,
9258 },
9259 {
9260 .cmd = NL80211_CMD_FRAME,
9261 .doit = nl80211_tx_mgmt,
9262 .policy = nl80211_policy,
9263 .flags = GENL_ADMIN_PERM,
9264 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9265 NL80211_FLAG_NEED_RTNL,
9266 },
9267 {
9268 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9269 .doit = nl80211_tx_mgmt_cancel_wait,
9270 .policy = nl80211_policy,
9271 .flags = GENL_ADMIN_PERM,
9272 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9273 NL80211_FLAG_NEED_RTNL,
9274 },
9275 {
9276 .cmd = NL80211_CMD_SET_POWER_SAVE,
9277 .doit = nl80211_set_power_save,
9278 .policy = nl80211_policy,
9279 .flags = GENL_ADMIN_PERM,
9280 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9281 NL80211_FLAG_NEED_RTNL,
9282 },
9283 {
9284 .cmd = NL80211_CMD_GET_POWER_SAVE,
9285 .doit = nl80211_get_power_save,
9286 .policy = nl80211_policy,
9287 /* can be retrieved by unprivileged users */
9288 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9289 NL80211_FLAG_NEED_RTNL,
9290 },
9291 {
9292 .cmd = NL80211_CMD_SET_CQM,
9293 .doit = nl80211_set_cqm,
9294 .policy = nl80211_policy,
9295 .flags = GENL_ADMIN_PERM,
9296 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9297 NL80211_FLAG_NEED_RTNL,
9298 },
9299 {
9300 .cmd = NL80211_CMD_SET_CHANNEL,
9301 .doit = nl80211_set_channel,
9302 .policy = nl80211_policy,
9303 .flags = GENL_ADMIN_PERM,
9304 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9305 NL80211_FLAG_NEED_RTNL,
9306 },
9307 {
9308 .cmd = NL80211_CMD_SET_WDS_PEER,
9309 .doit = nl80211_set_wds_peer,
9310 .policy = nl80211_policy,
9311 .flags = GENL_ADMIN_PERM,
9312 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9313 NL80211_FLAG_NEED_RTNL,
9314 },
9315 {
9316 .cmd = NL80211_CMD_JOIN_MESH,
9317 .doit = nl80211_join_mesh,
9318 .policy = nl80211_policy,
9319 .flags = GENL_ADMIN_PERM,
9320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9321 NL80211_FLAG_NEED_RTNL,
9322 },
9323 {
9324 .cmd = NL80211_CMD_LEAVE_MESH,
9325 .doit = nl80211_leave_mesh,
9326 .policy = nl80211_policy,
9327 .flags = GENL_ADMIN_PERM,
9328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9329 NL80211_FLAG_NEED_RTNL,
9330 },
9331 #ifdef CONFIG_PM
9332 {
9333 .cmd = NL80211_CMD_GET_WOWLAN,
9334 .doit = nl80211_get_wowlan,
9335 .policy = nl80211_policy,
9336 /* can be retrieved by unprivileged users */
9337 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9338 NL80211_FLAG_NEED_RTNL,
9339 },
9340 {
9341 .cmd = NL80211_CMD_SET_WOWLAN,
9342 .doit = nl80211_set_wowlan,
9343 .policy = nl80211_policy,
9344 .flags = GENL_ADMIN_PERM,
9345 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9346 NL80211_FLAG_NEED_RTNL,
9347 },
9348 #endif
9349 {
9350 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9351 .doit = nl80211_set_rekey_data,
9352 .policy = nl80211_policy,
9353 .flags = GENL_ADMIN_PERM,
9354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9355 NL80211_FLAG_NEED_RTNL,
9356 },
9357 {
9358 .cmd = NL80211_CMD_TDLS_MGMT,
9359 .doit = nl80211_tdls_mgmt,
9360 .policy = nl80211_policy,
9361 .flags = GENL_ADMIN_PERM,
9362 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9363 NL80211_FLAG_NEED_RTNL,
9364 },
9365 {
9366 .cmd = NL80211_CMD_TDLS_OPER,
9367 .doit = nl80211_tdls_oper,
9368 .policy = nl80211_policy,
9369 .flags = GENL_ADMIN_PERM,
9370 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9371 NL80211_FLAG_NEED_RTNL,
9372 },
9373 {
9374 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9375 .doit = nl80211_register_unexpected_frame,
9376 .policy = nl80211_policy,
9377 .flags = GENL_ADMIN_PERM,
9378 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9379 NL80211_FLAG_NEED_RTNL,
9380 },
9381 {
9382 .cmd = NL80211_CMD_PROBE_CLIENT,
9383 .doit = nl80211_probe_client,
9384 .policy = nl80211_policy,
9385 .flags = GENL_ADMIN_PERM,
9386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9387 NL80211_FLAG_NEED_RTNL,
9388 },
9389 {
9390 .cmd = NL80211_CMD_REGISTER_BEACONS,
9391 .doit = nl80211_register_beacons,
9392 .policy = nl80211_policy,
9393 .flags = GENL_ADMIN_PERM,
9394 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9395 NL80211_FLAG_NEED_RTNL,
9396 },
9397 {
9398 .cmd = NL80211_CMD_SET_NOACK_MAP,
9399 .doit = nl80211_set_noack_map,
9400 .policy = nl80211_policy,
9401 .flags = GENL_ADMIN_PERM,
9402 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9403 NL80211_FLAG_NEED_RTNL,
9404 },
9405 {
9406 .cmd = NL80211_CMD_START_P2P_DEVICE,
9407 .doit = nl80211_start_p2p_device,
9408 .policy = nl80211_policy,
9409 .flags = GENL_ADMIN_PERM,
9410 .internal_flags = NL80211_FLAG_NEED_WDEV |
9411 NL80211_FLAG_NEED_RTNL,
9412 },
9413 {
9414 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9415 .doit = nl80211_stop_p2p_device,
9416 .policy = nl80211_policy,
9417 .flags = GENL_ADMIN_PERM,
9418 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9419 NL80211_FLAG_NEED_RTNL,
9420 },
9421 {
9422 .cmd = NL80211_CMD_SET_MCAST_RATE,
9423 .doit = nl80211_set_mcast_rate,
9424 .policy = nl80211_policy,
9425 .flags = GENL_ADMIN_PERM,
9426 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9427 NL80211_FLAG_NEED_RTNL,
9428 },
9429 {
9430 .cmd = NL80211_CMD_SET_MAC_ACL,
9431 .doit = nl80211_set_mac_acl,
9432 .policy = nl80211_policy,
9433 .flags = GENL_ADMIN_PERM,
9434 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9435 NL80211_FLAG_NEED_RTNL,
9436 },
9437 {
9438 .cmd = NL80211_CMD_RADAR_DETECT,
9439 .doit = nl80211_start_radar_detection,
9440 .policy = nl80211_policy,
9441 .flags = GENL_ADMIN_PERM,
9442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9443 NL80211_FLAG_NEED_RTNL,
9444 },
9445 {
9446 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9447 .doit = nl80211_get_protocol_features,
9448 .policy = nl80211_policy,
9449 },
9450 {
9451 .cmd = NL80211_CMD_UPDATE_FT_IES,
9452 .doit = nl80211_update_ft_ies,
9453 .policy = nl80211_policy,
9454 .flags = GENL_ADMIN_PERM,
9455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9456 NL80211_FLAG_NEED_RTNL,
9457 },
9458 {
9459 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9460 .doit = nl80211_crit_protocol_start,
9461 .policy = nl80211_policy,
9462 .flags = GENL_ADMIN_PERM,
9463 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9464 NL80211_FLAG_NEED_RTNL,
9465 },
9466 {
9467 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9468 .doit = nl80211_crit_protocol_stop,
9469 .policy = nl80211_policy,
9470 .flags = GENL_ADMIN_PERM,
9471 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9472 NL80211_FLAG_NEED_RTNL,
9473 },
9474 {
9475 .cmd = NL80211_CMD_GET_COALESCE,
9476 .doit = nl80211_get_coalesce,
9477 .policy = nl80211_policy,
9478 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9479 NL80211_FLAG_NEED_RTNL,
9480 },
9481 {
9482 .cmd = NL80211_CMD_SET_COALESCE,
9483 .doit = nl80211_set_coalesce,
9484 .policy = nl80211_policy,
9485 .flags = GENL_ADMIN_PERM,
9486 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9487 NL80211_FLAG_NEED_RTNL,
9488 },
9489 {
9490 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9491 .doit = nl80211_channel_switch,
9492 .policy = nl80211_policy,
9493 .flags = GENL_ADMIN_PERM,
9494 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9495 NL80211_FLAG_NEED_RTNL,
9496 },
9497 };
9498
9499 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9500 .name = "mlme",
9501 };
9502
9503 /* multicast groups */
9504 static struct genl_multicast_group nl80211_config_mcgrp = {
9505 .name = "config",
9506 };
9507 static struct genl_multicast_group nl80211_scan_mcgrp = {
9508 .name = "scan",
9509 };
9510 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9511 .name = "regulatory",
9512 };
9513
9514 /* notification functions */
9515
9516 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9517 {
9518 struct sk_buff *msg;
9519 struct nl80211_dump_wiphy_state state = {};
9520
9521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9522 if (!msg)
9523 return;
9524
9525 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9526 nlmsg_free(msg);
9527 return;
9528 }
9529
9530 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9531 nl80211_config_mcgrp.id, GFP_KERNEL);
9532 }
9533
9534 static int nl80211_add_scan_req(struct sk_buff *msg,
9535 struct cfg80211_registered_device *rdev)
9536 {
9537 struct cfg80211_scan_request *req = rdev->scan_req;
9538 struct nlattr *nest;
9539 int i;
9540
9541 if (WARN_ON(!req))
9542 return 0;
9543
9544 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9545 if (!nest)
9546 goto nla_put_failure;
9547 for (i = 0; i < req->n_ssids; i++) {
9548 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9549 goto nla_put_failure;
9550 }
9551 nla_nest_end(msg, nest);
9552
9553 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9554 if (!nest)
9555 goto nla_put_failure;
9556 for (i = 0; i < req->n_channels; i++) {
9557 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9558 goto nla_put_failure;
9559 }
9560 nla_nest_end(msg, nest);
9561
9562 if (req->ie &&
9563 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9564 goto nla_put_failure;
9565
9566 if (req->flags)
9567 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9568
9569 return 0;
9570 nla_put_failure:
9571 return -ENOBUFS;
9572 }
9573
9574 static int nl80211_send_scan_msg(struct sk_buff *msg,
9575 struct cfg80211_registered_device *rdev,
9576 struct wireless_dev *wdev,
9577 u32 portid, u32 seq, int flags,
9578 u32 cmd)
9579 {
9580 void *hdr;
9581
9582 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9583 if (!hdr)
9584 return -1;
9585
9586 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9587 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9588 wdev->netdev->ifindex)) ||
9589 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9590 goto nla_put_failure;
9591
9592 /* ignore errors and send incomplete event anyway */
9593 nl80211_add_scan_req(msg, rdev);
9594
9595 return genlmsg_end(msg, hdr);
9596
9597 nla_put_failure:
9598 genlmsg_cancel(msg, hdr);
9599 return -EMSGSIZE;
9600 }
9601
9602 static int
9603 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9604 struct cfg80211_registered_device *rdev,
9605 struct net_device *netdev,
9606 u32 portid, u32 seq, int flags, u32 cmd)
9607 {
9608 void *hdr;
9609
9610 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9611 if (!hdr)
9612 return -1;
9613
9614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9616 goto nla_put_failure;
9617
9618 return genlmsg_end(msg, hdr);
9619
9620 nla_put_failure:
9621 genlmsg_cancel(msg, hdr);
9622 return -EMSGSIZE;
9623 }
9624
9625 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9626 struct wireless_dev *wdev)
9627 {
9628 struct sk_buff *msg;
9629
9630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9631 if (!msg)
9632 return;
9633
9634 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9635 NL80211_CMD_TRIGGER_SCAN) < 0) {
9636 nlmsg_free(msg);
9637 return;
9638 }
9639
9640 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9641 nl80211_scan_mcgrp.id, GFP_KERNEL);
9642 }
9643
9644 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9645 struct wireless_dev *wdev)
9646 {
9647 struct sk_buff *msg;
9648
9649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9650 if (!msg)
9651 return;
9652
9653 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9654 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9655 nlmsg_free(msg);
9656 return;
9657 }
9658
9659 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9660 nl80211_scan_mcgrp.id, GFP_KERNEL);
9661 }
9662
9663 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9664 struct wireless_dev *wdev)
9665 {
9666 struct sk_buff *msg;
9667
9668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9669 if (!msg)
9670 return;
9671
9672 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9673 NL80211_CMD_SCAN_ABORTED) < 0) {
9674 nlmsg_free(msg);
9675 return;
9676 }
9677
9678 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9679 nl80211_scan_mcgrp.id, GFP_KERNEL);
9680 }
9681
9682 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9683 struct net_device *netdev)
9684 {
9685 struct sk_buff *msg;
9686
9687 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9688 if (!msg)
9689 return;
9690
9691 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9692 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9693 nlmsg_free(msg);
9694 return;
9695 }
9696
9697 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9698 nl80211_scan_mcgrp.id, GFP_KERNEL);
9699 }
9700
9701 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9702 struct net_device *netdev, u32 cmd)
9703 {
9704 struct sk_buff *msg;
9705
9706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9707 if (!msg)
9708 return;
9709
9710 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9711 nlmsg_free(msg);
9712 return;
9713 }
9714
9715 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9716 nl80211_scan_mcgrp.id, GFP_KERNEL);
9717 }
9718
9719 /*
9720 * This can happen on global regulatory changes or device specific settings
9721 * based on custom world regulatory domains.
9722 */
9723 void nl80211_send_reg_change_event(struct regulatory_request *request)
9724 {
9725 struct sk_buff *msg;
9726 void *hdr;
9727
9728 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9729 if (!msg)
9730 return;
9731
9732 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9733 if (!hdr) {
9734 nlmsg_free(msg);
9735 return;
9736 }
9737
9738 /* Userspace can always count this one always being set */
9739 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9740 goto nla_put_failure;
9741
9742 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9743 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9744 NL80211_REGDOM_TYPE_WORLD))
9745 goto nla_put_failure;
9746 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9747 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9748 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9749 goto nla_put_failure;
9750 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9751 request->intersect) {
9752 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9753 NL80211_REGDOM_TYPE_INTERSECTION))
9754 goto nla_put_failure;
9755 } else {
9756 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9757 NL80211_REGDOM_TYPE_COUNTRY) ||
9758 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9759 request->alpha2))
9760 goto nla_put_failure;
9761 }
9762
9763 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9764 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9765 goto nla_put_failure;
9766
9767 genlmsg_end(msg, hdr);
9768
9769 rcu_read_lock();
9770 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9771 GFP_ATOMIC);
9772 rcu_read_unlock();
9773
9774 return;
9775
9776 nla_put_failure:
9777 genlmsg_cancel(msg, hdr);
9778 nlmsg_free(msg);
9779 }
9780
9781 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9782 struct net_device *netdev,
9783 const u8 *buf, size_t len,
9784 enum nl80211_commands cmd, gfp_t gfp)
9785 {
9786 struct sk_buff *msg;
9787 void *hdr;
9788
9789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9790 if (!msg)
9791 return;
9792
9793 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9794 if (!hdr) {
9795 nlmsg_free(msg);
9796 return;
9797 }
9798
9799 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9800 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9801 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9802 goto nla_put_failure;
9803
9804 genlmsg_end(msg, hdr);
9805
9806 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9807 nl80211_mlme_mcgrp.id, gfp);
9808 return;
9809
9810 nla_put_failure:
9811 genlmsg_cancel(msg, hdr);
9812 nlmsg_free(msg);
9813 }
9814
9815 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9816 struct net_device *netdev, const u8 *buf,
9817 size_t len, gfp_t gfp)
9818 {
9819 nl80211_send_mlme_event(rdev, netdev, buf, len,
9820 NL80211_CMD_AUTHENTICATE, gfp);
9821 }
9822
9823 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9824 struct net_device *netdev, const u8 *buf,
9825 size_t len, gfp_t gfp)
9826 {
9827 nl80211_send_mlme_event(rdev, netdev, buf, len,
9828 NL80211_CMD_ASSOCIATE, gfp);
9829 }
9830
9831 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9832 struct net_device *netdev, const u8 *buf,
9833 size_t len, gfp_t gfp)
9834 {
9835 nl80211_send_mlme_event(rdev, netdev, buf, len,
9836 NL80211_CMD_DEAUTHENTICATE, gfp);
9837 }
9838
9839 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9840 struct net_device *netdev, const u8 *buf,
9841 size_t len, gfp_t gfp)
9842 {
9843 nl80211_send_mlme_event(rdev, netdev, buf, len,
9844 NL80211_CMD_DISASSOCIATE, gfp);
9845 }
9846
9847 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9848 size_t len)
9849 {
9850 struct wireless_dev *wdev = dev->ieee80211_ptr;
9851 struct wiphy *wiphy = wdev->wiphy;
9852 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9853 const struct ieee80211_mgmt *mgmt = (void *)buf;
9854 u32 cmd;
9855
9856 if (WARN_ON(len < 2))
9857 return;
9858
9859 if (ieee80211_is_deauth(mgmt->frame_control))
9860 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9861 else
9862 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9863
9864 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9865 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9866 }
9867 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9868
9869 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9870 struct net_device *netdev, int cmd,
9871 const u8 *addr, gfp_t gfp)
9872 {
9873 struct sk_buff *msg;
9874 void *hdr;
9875
9876 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9877 if (!msg)
9878 return;
9879
9880 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9881 if (!hdr) {
9882 nlmsg_free(msg);
9883 return;
9884 }
9885
9886 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9887 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9888 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9889 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9890 goto nla_put_failure;
9891
9892 genlmsg_end(msg, hdr);
9893
9894 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9895 nl80211_mlme_mcgrp.id, gfp);
9896 return;
9897
9898 nla_put_failure:
9899 genlmsg_cancel(msg, hdr);
9900 nlmsg_free(msg);
9901 }
9902
9903 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9904 struct net_device *netdev, const u8 *addr,
9905 gfp_t gfp)
9906 {
9907 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9908 addr, gfp);
9909 }
9910
9911 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9912 struct net_device *netdev, const u8 *addr,
9913 gfp_t gfp)
9914 {
9915 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9916 addr, gfp);
9917 }
9918
9919 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9920 struct net_device *netdev, const u8 *bssid,
9921 const u8 *req_ie, size_t req_ie_len,
9922 const u8 *resp_ie, size_t resp_ie_len,
9923 u16 status, gfp_t gfp)
9924 {
9925 struct sk_buff *msg;
9926 void *hdr;
9927
9928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9929 if (!msg)
9930 return;
9931
9932 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9933 if (!hdr) {
9934 nlmsg_free(msg);
9935 return;
9936 }
9937
9938 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9939 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9940 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9941 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9942 (req_ie &&
9943 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9944 (resp_ie &&
9945 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9946 goto nla_put_failure;
9947
9948 genlmsg_end(msg, hdr);
9949
9950 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9951 nl80211_mlme_mcgrp.id, gfp);
9952 return;
9953
9954 nla_put_failure:
9955 genlmsg_cancel(msg, hdr);
9956 nlmsg_free(msg);
9957
9958 }
9959
9960 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9961 struct net_device *netdev, const u8 *bssid,
9962 const u8 *req_ie, size_t req_ie_len,
9963 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9964 {
9965 struct sk_buff *msg;
9966 void *hdr;
9967
9968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9969 if (!msg)
9970 return;
9971
9972 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9973 if (!hdr) {
9974 nlmsg_free(msg);
9975 return;
9976 }
9977
9978 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9979 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9980 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9981 (req_ie &&
9982 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9983 (resp_ie &&
9984 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9985 goto nla_put_failure;
9986
9987 genlmsg_end(msg, hdr);
9988
9989 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9990 nl80211_mlme_mcgrp.id, gfp);
9991 return;
9992
9993 nla_put_failure:
9994 genlmsg_cancel(msg, hdr);
9995 nlmsg_free(msg);
9996
9997 }
9998
9999 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10000 struct net_device *netdev, u16 reason,
10001 const u8 *ie, size_t ie_len, bool from_ap)
10002 {
10003 struct sk_buff *msg;
10004 void *hdr;
10005
10006 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10007 if (!msg)
10008 return;
10009
10010 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10011 if (!hdr) {
10012 nlmsg_free(msg);
10013 return;
10014 }
10015
10016 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10017 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10018 (from_ap && reason &&
10019 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10020 (from_ap &&
10021 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10022 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10023 goto nla_put_failure;
10024
10025 genlmsg_end(msg, hdr);
10026
10027 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10028 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10029 return;
10030
10031 nla_put_failure:
10032 genlmsg_cancel(msg, hdr);
10033 nlmsg_free(msg);
10034
10035 }
10036
10037 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10038 struct net_device *netdev, const u8 *bssid,
10039 gfp_t gfp)
10040 {
10041 struct sk_buff *msg;
10042 void *hdr;
10043
10044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10045 if (!msg)
10046 return;
10047
10048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10049 if (!hdr) {
10050 nlmsg_free(msg);
10051 return;
10052 }
10053
10054 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10055 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10056 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10057 goto nla_put_failure;
10058
10059 genlmsg_end(msg, hdr);
10060
10061 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10062 nl80211_mlme_mcgrp.id, gfp);
10063 return;
10064
10065 nla_put_failure:
10066 genlmsg_cancel(msg, hdr);
10067 nlmsg_free(msg);
10068 }
10069
10070 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10071 const u8* ie, u8 ie_len, gfp_t gfp)
10072 {
10073 struct wireless_dev *wdev = dev->ieee80211_ptr;
10074 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10075 struct sk_buff *msg;
10076 void *hdr;
10077
10078 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10079 return;
10080
10081 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10082
10083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10084 if (!msg)
10085 return;
10086
10087 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10088 if (!hdr) {
10089 nlmsg_free(msg);
10090 return;
10091 }
10092
10093 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10094 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10095 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10096 (ie_len && ie &&
10097 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10098 goto nla_put_failure;
10099
10100 genlmsg_end(msg, hdr);
10101
10102 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10103 nl80211_mlme_mcgrp.id, gfp);
10104 return;
10105
10106 nla_put_failure:
10107 genlmsg_cancel(msg, hdr);
10108 nlmsg_free(msg);
10109 }
10110 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10111
10112 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10113 struct net_device *netdev, const u8 *addr,
10114 enum nl80211_key_type key_type, int key_id,
10115 const u8 *tsc, gfp_t gfp)
10116 {
10117 struct sk_buff *msg;
10118 void *hdr;
10119
10120 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10121 if (!msg)
10122 return;
10123
10124 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10125 if (!hdr) {
10126 nlmsg_free(msg);
10127 return;
10128 }
10129
10130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10131 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10132 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10133 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10134 (key_id != -1 &&
10135 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10136 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10137 goto nla_put_failure;
10138
10139 genlmsg_end(msg, hdr);
10140
10141 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10142 nl80211_mlme_mcgrp.id, gfp);
10143 return;
10144
10145 nla_put_failure:
10146 genlmsg_cancel(msg, hdr);
10147 nlmsg_free(msg);
10148 }
10149
10150 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10151 struct ieee80211_channel *channel_before,
10152 struct ieee80211_channel *channel_after)
10153 {
10154 struct sk_buff *msg;
10155 void *hdr;
10156 struct nlattr *nl_freq;
10157
10158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10159 if (!msg)
10160 return;
10161
10162 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10163 if (!hdr) {
10164 nlmsg_free(msg);
10165 return;
10166 }
10167
10168 /*
10169 * Since we are applying the beacon hint to a wiphy we know its
10170 * wiphy_idx is valid
10171 */
10172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10173 goto nla_put_failure;
10174
10175 /* Before */
10176 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10177 if (!nl_freq)
10178 goto nla_put_failure;
10179 if (nl80211_msg_put_channel(msg, channel_before, false))
10180 goto nla_put_failure;
10181 nla_nest_end(msg, nl_freq);
10182
10183 /* After */
10184 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10185 if (!nl_freq)
10186 goto nla_put_failure;
10187 if (nl80211_msg_put_channel(msg, channel_after, false))
10188 goto nla_put_failure;
10189 nla_nest_end(msg, nl_freq);
10190
10191 genlmsg_end(msg, hdr);
10192
10193 rcu_read_lock();
10194 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10195 GFP_ATOMIC);
10196 rcu_read_unlock();
10197
10198 return;
10199
10200 nla_put_failure:
10201 genlmsg_cancel(msg, hdr);
10202 nlmsg_free(msg);
10203 }
10204
10205 static void nl80211_send_remain_on_chan_event(
10206 int cmd, struct cfg80211_registered_device *rdev,
10207 struct wireless_dev *wdev, u64 cookie,
10208 struct ieee80211_channel *chan,
10209 unsigned int duration, gfp_t gfp)
10210 {
10211 struct sk_buff *msg;
10212 void *hdr;
10213
10214 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10215 if (!msg)
10216 return;
10217
10218 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10219 if (!hdr) {
10220 nlmsg_free(msg);
10221 return;
10222 }
10223
10224 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10225 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10226 wdev->netdev->ifindex)) ||
10227 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10228 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10229 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10230 NL80211_CHAN_NO_HT) ||
10231 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10232 goto nla_put_failure;
10233
10234 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10235 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10236 goto nla_put_failure;
10237
10238 genlmsg_end(msg, hdr);
10239
10240 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10241 nl80211_mlme_mcgrp.id, gfp);
10242 return;
10243
10244 nla_put_failure:
10245 genlmsg_cancel(msg, hdr);
10246 nlmsg_free(msg);
10247 }
10248
10249 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10250 struct ieee80211_channel *chan,
10251 unsigned int duration, gfp_t gfp)
10252 {
10253 struct wiphy *wiphy = wdev->wiphy;
10254 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10255
10256 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10257 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10258 rdev, wdev, cookie, chan,
10259 duration, gfp);
10260 }
10261 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10262
10263 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10264 struct ieee80211_channel *chan,
10265 gfp_t gfp)
10266 {
10267 struct wiphy *wiphy = wdev->wiphy;
10268 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10269
10270 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10271 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10272 rdev, wdev, cookie, chan, 0, gfp);
10273 }
10274 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10275
10276 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10277 struct station_info *sinfo, gfp_t gfp)
10278 {
10279 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10280 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10281 struct sk_buff *msg;
10282
10283 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10284
10285 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10286 if (!msg)
10287 return;
10288
10289 if (nl80211_send_station(msg, 0, 0, 0,
10290 rdev, dev, mac_addr, sinfo) < 0) {
10291 nlmsg_free(msg);
10292 return;
10293 }
10294
10295 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10296 nl80211_mlme_mcgrp.id, gfp);
10297 }
10298 EXPORT_SYMBOL(cfg80211_new_sta);
10299
10300 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10301 {
10302 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10303 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10304 struct sk_buff *msg;
10305 void *hdr;
10306
10307 trace_cfg80211_del_sta(dev, mac_addr);
10308
10309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10310 if (!msg)
10311 return;
10312
10313 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10314 if (!hdr) {
10315 nlmsg_free(msg);
10316 return;
10317 }
10318
10319 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10320 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10321 goto nla_put_failure;
10322
10323 genlmsg_end(msg, hdr);
10324
10325 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10326 nl80211_mlme_mcgrp.id, gfp);
10327 return;
10328
10329 nla_put_failure:
10330 genlmsg_cancel(msg, hdr);
10331 nlmsg_free(msg);
10332 }
10333 EXPORT_SYMBOL(cfg80211_del_sta);
10334
10335 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10336 enum nl80211_connect_failed_reason reason,
10337 gfp_t gfp)
10338 {
10339 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10340 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10341 struct sk_buff *msg;
10342 void *hdr;
10343
10344 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10345 if (!msg)
10346 return;
10347
10348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10349 if (!hdr) {
10350 nlmsg_free(msg);
10351 return;
10352 }
10353
10354 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10355 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10356 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10357 goto nla_put_failure;
10358
10359 genlmsg_end(msg, hdr);
10360
10361 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10362 nl80211_mlme_mcgrp.id, gfp);
10363 return;
10364
10365 nla_put_failure:
10366 genlmsg_cancel(msg, hdr);
10367 nlmsg_free(msg);
10368 }
10369 EXPORT_SYMBOL(cfg80211_conn_failed);
10370
10371 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10372 const u8 *addr, gfp_t gfp)
10373 {
10374 struct wireless_dev *wdev = dev->ieee80211_ptr;
10375 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10376 struct sk_buff *msg;
10377 void *hdr;
10378 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10379
10380 if (!nlportid)
10381 return false;
10382
10383 msg = nlmsg_new(100, gfp);
10384 if (!msg)
10385 return true;
10386
10387 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10388 if (!hdr) {
10389 nlmsg_free(msg);
10390 return true;
10391 }
10392
10393 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10394 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10395 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10396 goto nla_put_failure;
10397
10398 genlmsg_end(msg, hdr);
10399 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10400 return true;
10401
10402 nla_put_failure:
10403 genlmsg_cancel(msg, hdr);
10404 nlmsg_free(msg);
10405 return true;
10406 }
10407
10408 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10409 const u8 *addr, gfp_t gfp)
10410 {
10411 struct wireless_dev *wdev = dev->ieee80211_ptr;
10412 bool ret;
10413
10414 trace_cfg80211_rx_spurious_frame(dev, addr);
10415
10416 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10417 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10418 trace_cfg80211_return_bool(false);
10419 return false;
10420 }
10421 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10422 addr, gfp);
10423 trace_cfg80211_return_bool(ret);
10424 return ret;
10425 }
10426 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10427
10428 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10429 const u8 *addr, gfp_t gfp)
10430 {
10431 struct wireless_dev *wdev = dev->ieee80211_ptr;
10432 bool ret;
10433
10434 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10435
10436 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10437 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10438 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10439 trace_cfg80211_return_bool(false);
10440 return false;
10441 }
10442 ret = __nl80211_unexpected_frame(dev,
10443 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10444 addr, gfp);
10445 trace_cfg80211_return_bool(ret);
10446 return ret;
10447 }
10448 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10449
10450 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10451 struct wireless_dev *wdev, u32 nlportid,
10452 int freq, int sig_dbm,
10453 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10454 {
10455 struct net_device *netdev = wdev->netdev;
10456 struct sk_buff *msg;
10457 void *hdr;
10458
10459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10460 if (!msg)
10461 return -ENOMEM;
10462
10463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10464 if (!hdr) {
10465 nlmsg_free(msg);
10466 return -ENOMEM;
10467 }
10468
10469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10470 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10471 netdev->ifindex)) ||
10472 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10473 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10474 (sig_dbm &&
10475 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10476 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10477 (flags &&
10478 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10479 goto nla_put_failure;
10480
10481 genlmsg_end(msg, hdr);
10482
10483 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10484
10485 nla_put_failure:
10486 genlmsg_cancel(msg, hdr);
10487 nlmsg_free(msg);
10488 return -ENOBUFS;
10489 }
10490
10491 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10492 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10493 {
10494 struct wiphy *wiphy = wdev->wiphy;
10495 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10496 struct net_device *netdev = wdev->netdev;
10497 struct sk_buff *msg;
10498 void *hdr;
10499
10500 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10501
10502 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10503 if (!msg)
10504 return;
10505
10506 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10507 if (!hdr) {
10508 nlmsg_free(msg);
10509 return;
10510 }
10511
10512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10513 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10514 netdev->ifindex)) ||
10515 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10516 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10517 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10518 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10519 goto nla_put_failure;
10520
10521 genlmsg_end(msg, hdr);
10522
10523 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10524 nl80211_mlme_mcgrp.id, gfp);
10525 return;
10526
10527 nla_put_failure:
10528 genlmsg_cancel(msg, hdr);
10529 nlmsg_free(msg);
10530 }
10531 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10532
10533 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10534 enum nl80211_cqm_rssi_threshold_event rssi_event,
10535 gfp_t gfp)
10536 {
10537 struct wireless_dev *wdev = dev->ieee80211_ptr;
10538 struct wiphy *wiphy = wdev->wiphy;
10539 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10540 struct sk_buff *msg;
10541 struct nlattr *pinfoattr;
10542 void *hdr;
10543
10544 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10545
10546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10547 if (!msg)
10548 return;
10549
10550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10551 if (!hdr) {
10552 nlmsg_free(msg);
10553 return;
10554 }
10555
10556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10557 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10558 goto nla_put_failure;
10559
10560 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10561 if (!pinfoattr)
10562 goto nla_put_failure;
10563
10564 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10565 rssi_event))
10566 goto nla_put_failure;
10567
10568 nla_nest_end(msg, pinfoattr);
10569
10570 genlmsg_end(msg, hdr);
10571
10572 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10573 nl80211_mlme_mcgrp.id, gfp);
10574 return;
10575
10576 nla_put_failure:
10577 genlmsg_cancel(msg, hdr);
10578 nlmsg_free(msg);
10579 }
10580 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10581
10582 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10583 struct net_device *netdev, const u8 *bssid,
10584 const u8 *replay_ctr, gfp_t gfp)
10585 {
10586 struct sk_buff *msg;
10587 struct nlattr *rekey_attr;
10588 void *hdr;
10589
10590 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10591 if (!msg)
10592 return;
10593
10594 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10595 if (!hdr) {
10596 nlmsg_free(msg);
10597 return;
10598 }
10599
10600 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10601 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10602 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10603 goto nla_put_failure;
10604
10605 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10606 if (!rekey_attr)
10607 goto nla_put_failure;
10608
10609 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10610 NL80211_REPLAY_CTR_LEN, replay_ctr))
10611 goto nla_put_failure;
10612
10613 nla_nest_end(msg, rekey_attr);
10614
10615 genlmsg_end(msg, hdr);
10616
10617 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10618 nl80211_mlme_mcgrp.id, gfp);
10619 return;
10620
10621 nla_put_failure:
10622 genlmsg_cancel(msg, hdr);
10623 nlmsg_free(msg);
10624 }
10625
10626 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10627 const u8 *replay_ctr, gfp_t gfp)
10628 {
10629 struct wireless_dev *wdev = dev->ieee80211_ptr;
10630 struct wiphy *wiphy = wdev->wiphy;
10631 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10632
10633 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10634 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10635 }
10636 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10637
10638 static void
10639 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10640 struct net_device *netdev, int index,
10641 const u8 *bssid, bool preauth, gfp_t gfp)
10642 {
10643 struct sk_buff *msg;
10644 struct nlattr *attr;
10645 void *hdr;
10646
10647 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10648 if (!msg)
10649 return;
10650
10651 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10652 if (!hdr) {
10653 nlmsg_free(msg);
10654 return;
10655 }
10656
10657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10659 goto nla_put_failure;
10660
10661 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10662 if (!attr)
10663 goto nla_put_failure;
10664
10665 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10666 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10667 (preauth &&
10668 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10669 goto nla_put_failure;
10670
10671 nla_nest_end(msg, attr);
10672
10673 genlmsg_end(msg, hdr);
10674
10675 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10676 nl80211_mlme_mcgrp.id, gfp);
10677 return;
10678
10679 nla_put_failure:
10680 genlmsg_cancel(msg, hdr);
10681 nlmsg_free(msg);
10682 }
10683
10684 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10685 const u8 *bssid, bool preauth, gfp_t gfp)
10686 {
10687 struct wireless_dev *wdev = dev->ieee80211_ptr;
10688 struct wiphy *wiphy = wdev->wiphy;
10689 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10690
10691 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10692 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10693 }
10694 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10695
10696 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10697 struct net_device *netdev,
10698 struct cfg80211_chan_def *chandef,
10699 gfp_t gfp)
10700 {
10701 struct sk_buff *msg;
10702 void *hdr;
10703
10704 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10705 if (!msg)
10706 return;
10707
10708 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10709 if (!hdr) {
10710 nlmsg_free(msg);
10711 return;
10712 }
10713
10714 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10715 goto nla_put_failure;
10716
10717 if (nl80211_send_chandef(msg, chandef))
10718 goto nla_put_failure;
10719
10720 genlmsg_end(msg, hdr);
10721
10722 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10723 nl80211_mlme_mcgrp.id, gfp);
10724 return;
10725
10726 nla_put_failure:
10727 genlmsg_cancel(msg, hdr);
10728 nlmsg_free(msg);
10729 }
10730
10731 void cfg80211_ch_switch_notify(struct net_device *dev,
10732 struct cfg80211_chan_def *chandef)
10733 {
10734 struct wireless_dev *wdev = dev->ieee80211_ptr;
10735 struct wiphy *wiphy = wdev->wiphy;
10736 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10737
10738 trace_cfg80211_ch_switch_notify(dev, chandef);
10739
10740 wdev_lock(wdev);
10741
10742 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10743 wdev->iftype != NL80211_IFTYPE_P2P_GO))
10744 goto out;
10745
10746 wdev->channel = chandef->chan;
10747 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10748 out:
10749 wdev_unlock(wdev);
10750 return;
10751 }
10752 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10753
10754 void cfg80211_cqm_txe_notify(struct net_device *dev,
10755 const u8 *peer, u32 num_packets,
10756 u32 rate, u32 intvl, gfp_t gfp)
10757 {
10758 struct wireless_dev *wdev = dev->ieee80211_ptr;
10759 struct wiphy *wiphy = wdev->wiphy;
10760 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10761 struct sk_buff *msg;
10762 struct nlattr *pinfoattr;
10763 void *hdr;
10764
10765 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10766 if (!msg)
10767 return;
10768
10769 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10770 if (!hdr) {
10771 nlmsg_free(msg);
10772 return;
10773 }
10774
10775 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10776 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10777 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10778 goto nla_put_failure;
10779
10780 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10781 if (!pinfoattr)
10782 goto nla_put_failure;
10783
10784 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10785 goto nla_put_failure;
10786
10787 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10788 goto nla_put_failure;
10789
10790 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10791 goto nla_put_failure;
10792
10793 nla_nest_end(msg, pinfoattr);
10794
10795 genlmsg_end(msg, hdr);
10796
10797 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10798 nl80211_mlme_mcgrp.id, gfp);
10799 return;
10800
10801 nla_put_failure:
10802 genlmsg_cancel(msg, hdr);
10803 nlmsg_free(msg);
10804 }
10805 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10806
10807 void
10808 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10809 struct cfg80211_chan_def *chandef,
10810 enum nl80211_radar_event event,
10811 struct net_device *netdev, gfp_t gfp)
10812 {
10813 struct sk_buff *msg;
10814 void *hdr;
10815
10816 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10817 if (!msg)
10818 return;
10819
10820 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10821 if (!hdr) {
10822 nlmsg_free(msg);
10823 return;
10824 }
10825
10826 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10827 goto nla_put_failure;
10828
10829 /* NOP and radar events don't need a netdev parameter */
10830 if (netdev) {
10831 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10832
10833 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10835 goto nla_put_failure;
10836 }
10837
10838 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10839 goto nla_put_failure;
10840
10841 if (nl80211_send_chandef(msg, chandef))
10842 goto nla_put_failure;
10843
10844 genlmsg_end(msg, hdr);
10845
10846 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10847 nl80211_mlme_mcgrp.id, gfp);
10848 return;
10849
10850 nla_put_failure:
10851 genlmsg_cancel(msg, hdr);
10852 nlmsg_free(msg);
10853 }
10854
10855 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10856 const u8 *peer, u32 num_packets, gfp_t gfp)
10857 {
10858 struct wireless_dev *wdev = dev->ieee80211_ptr;
10859 struct wiphy *wiphy = wdev->wiphy;
10860 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10861 struct sk_buff *msg;
10862 struct nlattr *pinfoattr;
10863 void *hdr;
10864
10865 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10866
10867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10868 if (!msg)
10869 return;
10870
10871 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10872 if (!hdr) {
10873 nlmsg_free(msg);
10874 return;
10875 }
10876
10877 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10878 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10879 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10880 goto nla_put_failure;
10881
10882 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10883 if (!pinfoattr)
10884 goto nla_put_failure;
10885
10886 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10887 goto nla_put_failure;
10888
10889 nla_nest_end(msg, pinfoattr);
10890
10891 genlmsg_end(msg, hdr);
10892
10893 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10894 nl80211_mlme_mcgrp.id, gfp);
10895 return;
10896
10897 nla_put_failure:
10898 genlmsg_cancel(msg, hdr);
10899 nlmsg_free(msg);
10900 }
10901 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10902
10903 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10904 u64 cookie, bool acked, gfp_t gfp)
10905 {
10906 struct wireless_dev *wdev = dev->ieee80211_ptr;
10907 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10908 struct sk_buff *msg;
10909 void *hdr;
10910
10911 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10912
10913 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10914
10915 if (!msg)
10916 return;
10917
10918 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10919 if (!hdr) {
10920 nlmsg_free(msg);
10921 return;
10922 }
10923
10924 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10925 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10926 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10927 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10928 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10929 goto nla_put_failure;
10930
10931 genlmsg_end(msg, hdr);
10932
10933 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10934 nl80211_mlme_mcgrp.id, gfp);
10935 return;
10936
10937 nla_put_failure:
10938 genlmsg_cancel(msg, hdr);
10939 nlmsg_free(msg);
10940 }
10941 EXPORT_SYMBOL(cfg80211_probe_status);
10942
10943 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10944 const u8 *frame, size_t len,
10945 int freq, int sig_dbm)
10946 {
10947 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10948 struct sk_buff *msg;
10949 void *hdr;
10950 struct cfg80211_beacon_registration *reg;
10951
10952 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10953
10954 spin_lock_bh(&rdev->beacon_registrations_lock);
10955 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10956 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10957 if (!msg) {
10958 spin_unlock_bh(&rdev->beacon_registrations_lock);
10959 return;
10960 }
10961
10962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10963 if (!hdr)
10964 goto nla_put_failure;
10965
10966 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10967 (freq &&
10968 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10969 (sig_dbm &&
10970 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10971 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10972 goto nla_put_failure;
10973
10974 genlmsg_end(msg, hdr);
10975
10976 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10977 }
10978 spin_unlock_bh(&rdev->beacon_registrations_lock);
10979 return;
10980
10981 nla_put_failure:
10982 spin_unlock_bh(&rdev->beacon_registrations_lock);
10983 if (hdr)
10984 genlmsg_cancel(msg, hdr);
10985 nlmsg_free(msg);
10986 }
10987 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10988
10989 #ifdef CONFIG_PM
10990 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10991 struct cfg80211_wowlan_wakeup *wakeup,
10992 gfp_t gfp)
10993 {
10994 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10995 struct sk_buff *msg;
10996 void *hdr;
10997 int size = 200;
10998
10999 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11000
11001 if (wakeup)
11002 size += wakeup->packet_present_len;
11003
11004 msg = nlmsg_new(size, gfp);
11005 if (!msg)
11006 return;
11007
11008 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11009 if (!hdr)
11010 goto free_msg;
11011
11012 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11013 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11014 goto free_msg;
11015
11016 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11017 wdev->netdev->ifindex))
11018 goto free_msg;
11019
11020 if (wakeup) {
11021 struct nlattr *reasons;
11022
11023 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11024
11025 if (wakeup->disconnect &&
11026 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11027 goto free_msg;
11028 if (wakeup->magic_pkt &&
11029 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11030 goto free_msg;
11031 if (wakeup->gtk_rekey_failure &&
11032 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11033 goto free_msg;
11034 if (wakeup->eap_identity_req &&
11035 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11036 goto free_msg;
11037 if (wakeup->four_way_handshake &&
11038 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11039 goto free_msg;
11040 if (wakeup->rfkill_release &&
11041 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11042 goto free_msg;
11043
11044 if (wakeup->pattern_idx >= 0 &&
11045 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11046 wakeup->pattern_idx))
11047 goto free_msg;
11048
11049 if (wakeup->tcp_match)
11050 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11051
11052 if (wakeup->tcp_connlost)
11053 nla_put_flag(msg,
11054 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11055
11056 if (wakeup->tcp_nomoretokens)
11057 nla_put_flag(msg,
11058 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11059
11060 if (wakeup->packet) {
11061 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11062 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11063
11064 if (!wakeup->packet_80211) {
11065 pkt_attr =
11066 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11067 len_attr =
11068 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11069 }
11070
11071 if (wakeup->packet_len &&
11072 nla_put_u32(msg, len_attr, wakeup->packet_len))
11073 goto free_msg;
11074
11075 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11076 wakeup->packet))
11077 goto free_msg;
11078 }
11079
11080 nla_nest_end(msg, reasons);
11081 }
11082
11083 genlmsg_end(msg, hdr);
11084
11085 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11086 nl80211_mlme_mcgrp.id, gfp);
11087 return;
11088
11089 free_msg:
11090 nlmsg_free(msg);
11091 }
11092 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11093 #endif
11094
11095 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11096 enum nl80211_tdls_operation oper,
11097 u16 reason_code, gfp_t gfp)
11098 {
11099 struct wireless_dev *wdev = dev->ieee80211_ptr;
11100 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11101 struct sk_buff *msg;
11102 void *hdr;
11103
11104 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11105 reason_code);
11106
11107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11108 if (!msg)
11109 return;
11110
11111 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11112 if (!hdr) {
11113 nlmsg_free(msg);
11114 return;
11115 }
11116
11117 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11118 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11119 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11120 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11121 (reason_code > 0 &&
11122 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11123 goto nla_put_failure;
11124
11125 genlmsg_end(msg, hdr);
11126
11127 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11128 nl80211_mlme_mcgrp.id, gfp);
11129 return;
11130
11131 nla_put_failure:
11132 genlmsg_cancel(msg, hdr);
11133 nlmsg_free(msg);
11134 }
11135 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11136
11137 static int nl80211_netlink_notify(struct notifier_block * nb,
11138 unsigned long state,
11139 void *_notify)
11140 {
11141 struct netlink_notify *notify = _notify;
11142 struct cfg80211_registered_device *rdev;
11143 struct wireless_dev *wdev;
11144 struct cfg80211_beacon_registration *reg, *tmp;
11145
11146 if (state != NETLINK_URELEASE)
11147 return NOTIFY_DONE;
11148
11149 rcu_read_lock();
11150
11151 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11152 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11153 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11154
11155 spin_lock_bh(&rdev->beacon_registrations_lock);
11156 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11157 list) {
11158 if (reg->nlportid == notify->portid) {
11159 list_del(&reg->list);
11160 kfree(reg);
11161 break;
11162 }
11163 }
11164 spin_unlock_bh(&rdev->beacon_registrations_lock);
11165 }
11166
11167 rcu_read_unlock();
11168
11169 return NOTIFY_DONE;
11170 }
11171
11172 static struct notifier_block nl80211_netlink_notifier = {
11173 .notifier_call = nl80211_netlink_notify,
11174 };
11175
11176 void cfg80211_ft_event(struct net_device *netdev,
11177 struct cfg80211_ft_event_params *ft_event)
11178 {
11179 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11180 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11181 struct sk_buff *msg;
11182 void *hdr;
11183
11184 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11185
11186 if (!ft_event->target_ap)
11187 return;
11188
11189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11190 if (!msg)
11191 return;
11192
11193 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11194 if (!hdr) {
11195 nlmsg_free(msg);
11196 return;
11197 }
11198
11199 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11200 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11201 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11202 if (ft_event->ies)
11203 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11204 if (ft_event->ric_ies)
11205 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11206 ft_event->ric_ies);
11207
11208 genlmsg_end(msg, hdr);
11209
11210 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11211 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11212 }
11213 EXPORT_SYMBOL(cfg80211_ft_event);
11214
11215 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11216 {
11217 struct cfg80211_registered_device *rdev;
11218 struct sk_buff *msg;
11219 void *hdr;
11220 u32 nlportid;
11221
11222 rdev = wiphy_to_dev(wdev->wiphy);
11223 if (!rdev->crit_proto_nlportid)
11224 return;
11225
11226 nlportid = rdev->crit_proto_nlportid;
11227 rdev->crit_proto_nlportid = 0;
11228
11229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11230 if (!msg)
11231 return;
11232
11233 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11234 if (!hdr)
11235 goto nla_put_failure;
11236
11237 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11238 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11239 goto nla_put_failure;
11240
11241 genlmsg_end(msg, hdr);
11242
11243 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11244 return;
11245
11246 nla_put_failure:
11247 if (hdr)
11248 genlmsg_cancel(msg, hdr);
11249 nlmsg_free(msg);
11250
11251 }
11252 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11253
11254 /* initialisation/exit functions */
11255
11256 int nl80211_init(void)
11257 {
11258 int err;
11259
11260 err = genl_register_family_with_ops(&nl80211_fam,
11261 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11262 if (err)
11263 return err;
11264
11265 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11266 if (err)
11267 goto err_out;
11268
11269 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11270 if (err)
11271 goto err_out;
11272
11273 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11274 if (err)
11275 goto err_out;
11276
11277 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11278 if (err)
11279 goto err_out;
11280
11281 #ifdef CONFIG_NL80211_TESTMODE
11282 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11283 if (err)
11284 goto err_out;
11285 #endif
11286
11287 err = netlink_register_notifier(&nl80211_netlink_notifier);
11288 if (err)
11289 goto err_out;
11290
11291 return 0;
11292 err_out:
11293 genl_unregister_family(&nl80211_fam);
11294 return err;
11295 }
11296
11297 void nl80211_exit(void)
11298 {
11299 netlink_unregister_notifier(&nl80211_netlink_notifier);
11300 genl_unregister_family(&nl80211_fam);
11301 }
Linus' kernel tree