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95882a788b5be372515eefb452f9d2e0c2a41e2b
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* returns ERR_PTR values */
51 static struct wireless_dev *
52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
53 {
54 struct cfg80211_registered_device *rdev;
55 struct wireless_dev *result = NULL;
56 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
57 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
58 u64 wdev_id;
59 int wiphy_idx = -1;
60 int ifidx = -1;
61
62 ASSERT_RTNL();
63
64 if (!have_ifidx && !have_wdev_id)
65 return ERR_PTR(-EINVAL);
66
67 if (have_ifidx)
68 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
69 if (have_wdev_id) {
70 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
71 wiphy_idx = wdev_id >> 32;
72 }
73
74 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
75 struct wireless_dev *wdev;
76
77 if (wiphy_net(&rdev->wiphy) != netns)
78 continue;
79
80 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
81 continue;
82
83 list_for_each_entry(wdev, &rdev->wdev_list, list) {
84 if (have_ifidx && wdev->netdev &&
85 wdev->netdev->ifindex == ifidx) {
86 result = wdev;
87 break;
88 }
89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
90 result = wdev;
91 break;
92 }
93 }
94
95 if (result)
96 break;
97 }
98
99 if (result)
100 return result;
101 return ERR_PTR(-ENODEV);
102 }
103
104 static struct cfg80211_registered_device *
105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
106 {
107 struct cfg80211_registered_device *rdev = NULL, *tmp;
108 struct net_device *netdev;
109
110 ASSERT_RTNL();
111
112 if (!attrs[NL80211_ATTR_WIPHY] &&
113 !attrs[NL80211_ATTR_IFINDEX] &&
114 !attrs[NL80211_ATTR_WDEV])
115 return ERR_PTR(-EINVAL);
116
117 if (attrs[NL80211_ATTR_WIPHY])
118 rdev = cfg80211_rdev_by_wiphy_idx(
119 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
120
121 if (attrs[NL80211_ATTR_WDEV]) {
122 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
123 struct wireless_dev *wdev;
124 bool found = false;
125
126 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
127 if (tmp) {
128 /* make sure wdev exists */
129 list_for_each_entry(wdev, &tmp->wdev_list, list) {
130 if (wdev->identifier != (u32)wdev_id)
131 continue;
132 found = true;
133 break;
134 }
135
136 if (!found)
137 tmp = NULL;
138
139 if (rdev && tmp != rdev)
140 return ERR_PTR(-EINVAL);
141 rdev = tmp;
142 }
143 }
144
145 if (attrs[NL80211_ATTR_IFINDEX]) {
146 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
147 netdev = dev_get_by_index(netns, ifindex);
148 if (netdev) {
149 if (netdev->ieee80211_ptr)
150 tmp = wiphy_to_dev(
151 netdev->ieee80211_ptr->wiphy);
152 else
153 tmp = NULL;
154
155 dev_put(netdev);
156
157 /* not wireless device -- return error */
158 if (!tmp)
159 return ERR_PTR(-EINVAL);
160
161 /* mismatch -- return error */
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164
165 rdev = tmp;
166 }
167 }
168
169 if (!rdev)
170 return ERR_PTR(-ENODEV);
171
172 if (netns != wiphy_net(&rdev->wiphy))
173 return ERR_PTR(-ENODEV);
174
175 return rdev;
176 }
177
178 /*
179 * This function returns a pointer to the driver
180 * that the genl_info item that is passed refers to.
181 *
182 * The result of this can be a PTR_ERR and hence must
183 * be checked with IS_ERR() for errors.
184 */
185 static struct cfg80211_registered_device *
186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
187 {
188 return __cfg80211_rdev_from_attrs(netns, info->attrs);
189 }
190
191 /* policy for the attributes */
192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
193 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
194 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
195 .len = 20-1 },
196 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
197
198 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
199 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
200 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
201 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
202 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
203
204 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
205 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
206 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
207 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
208 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
209
210 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
211 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
212 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
213
214 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
215 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
216
217 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
218 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
219 .len = WLAN_MAX_KEY_LEN },
220 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
221 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
222 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
223 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
224 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
225
226 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
227 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
228 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
229 .len = IEEE80211_MAX_DATA_LEN },
230 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
231 .len = IEEE80211_MAX_DATA_LEN },
232 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
233 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
234 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
235 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
236 .len = NL80211_MAX_SUPP_RATES },
237 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
238 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
239 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
240 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
241 .len = IEEE80211_MAX_MESH_ID_LEN },
242 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
243
244 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
245 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
246
247 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
248 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
249 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
250 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
251 .len = NL80211_MAX_SUPP_RATES },
252 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
253
254 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
255 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
256
257 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
258
259 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
260 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
261 .len = IEEE80211_MAX_DATA_LEN },
262 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
263 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
264
265 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
266 .len = IEEE80211_MAX_SSID_LEN },
267 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
268 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
269 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
270 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
271 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
272 [NL80211_ATTR_STA_FLAGS2] = {
273 .len = sizeof(struct nl80211_sta_flag_update),
274 },
275 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
276 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
277 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
278 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
279 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
280 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
281 [NL80211_ATTR_PID] = { .type = NLA_U32 },
282 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
283 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
284 .len = WLAN_PMKID_LEN },
285 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
286 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
287 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
288 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_DATA_LEN },
290 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
291 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
292 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
293 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
294 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
295 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
296 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
297 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
299 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
300 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
301 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
302 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
303 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
304 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
305 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
306 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
307 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
308 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
309 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
314 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
315 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
317 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
318 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
319 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
320 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
321 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
322 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
325 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
326 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
327 .len = NL80211_HT_CAPABILITY_LEN
328 },
329 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
330 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
331 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
332 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
333 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
334 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
335 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
336 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
337 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
338 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
339 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
340 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
341 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
342 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
343 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
344 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
346 .len = NL80211_VHT_CAPABILITY_LEN,
347 },
348 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
349 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
350 .len = IEEE80211_MAX_DATA_LEN },
351 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
352 [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 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
358 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
359 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
360 };
361
362 /* policy for the key attributes */
363 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
364 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
365 [NL80211_KEY_IDX] = { .type = NLA_U8 },
366 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
367 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
368 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
369 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
370 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
371 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
372 };
373
374 /* policy for the key default flags */
375 static const struct nla_policy
376 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
377 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
378 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
379 };
380
381 /* policy for WoWLAN attributes */
382 static const struct nla_policy
383 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
384 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
385 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
386 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
387 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
388 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
389 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
390 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
391 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
392 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
393 };
394
395 static const struct nla_policy
396 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
397 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
398 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
399 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
400 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
401 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
402 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
403 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
404 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
405 },
406 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
407 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
408 },
409 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
410 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
411 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
412 };
413
414 /* policy for coalesce rule attributes */
415 static const struct nla_policy
416 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
417 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
418 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
419 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
420 };
421
422 /* policy for GTK rekey offload attributes */
423 static const struct nla_policy
424 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
425 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
426 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
427 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
428 };
429
430 static const struct nla_policy
431 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
432 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
433 .len = IEEE80211_MAX_SSID_LEN },
434 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
435 };
436
437 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
438 struct netlink_callback *cb,
439 struct cfg80211_registered_device **rdev,
440 struct wireless_dev **wdev)
441 {
442 int err;
443
444 rtnl_lock();
445
446 if (!cb->args[0]) {
447 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
448 nl80211_fam.attrbuf, nl80211_fam.maxattr,
449 nl80211_policy);
450 if (err)
451 goto out_unlock;
452
453 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
454 nl80211_fam.attrbuf);
455 if (IS_ERR(*wdev)) {
456 err = PTR_ERR(*wdev);
457 goto out_unlock;
458 }
459 *rdev = wiphy_to_dev((*wdev)->wiphy);
460 /* 0 is the first index - add 1 to parse only once */
461 cb->args[0] = (*rdev)->wiphy_idx + 1;
462 cb->args[1] = (*wdev)->identifier;
463 } else {
464 /* subtract the 1 again here */
465 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
466 struct wireless_dev *tmp;
467
468 if (!wiphy) {
469 err = -ENODEV;
470 goto out_unlock;
471 }
472 *rdev = wiphy_to_dev(wiphy);
473 *wdev = NULL;
474
475 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
476 if (tmp->identifier == cb->args[1]) {
477 *wdev = tmp;
478 break;
479 }
480 }
481
482 if (!*wdev) {
483 err = -ENODEV;
484 goto out_unlock;
485 }
486 }
487
488 return 0;
489 out_unlock:
490 rtnl_unlock();
491 return err;
492 }
493
494 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
495 {
496 rtnl_unlock();
497 }
498
499 /* IE validation */
500 static bool is_valid_ie_attr(const struct nlattr *attr)
501 {
502 const u8 *pos;
503 int len;
504
505 if (!attr)
506 return true;
507
508 pos = nla_data(attr);
509 len = nla_len(attr);
510
511 while (len) {
512 u8 elemlen;
513
514 if (len < 2)
515 return false;
516 len -= 2;
517
518 elemlen = pos[1];
519 if (elemlen > len)
520 return false;
521
522 len -= elemlen;
523 pos += 2 + elemlen;
524 }
525
526 return true;
527 }
528
529 /* message building helper */
530 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
531 int flags, u8 cmd)
532 {
533 /* since there is no private header just add the generic one */
534 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
535 }
536
537 static int nl80211_msg_put_channel(struct sk_buff *msg,
538 struct ieee80211_channel *chan,
539 bool large)
540 {
541 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
542 chan->center_freq))
543 goto nla_put_failure;
544
545 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
546 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
547 goto nla_put_failure;
548 if (chan->flags & IEEE80211_CHAN_NO_IR) {
549 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
550 goto nla_put_failure;
551 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
552 goto nla_put_failure;
553 }
554 if (chan->flags & IEEE80211_CHAN_RADAR) {
555 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
556 goto nla_put_failure;
557 if (large) {
558 u32 time;
559
560 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
561
562 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
563 chan->dfs_state))
564 goto nla_put_failure;
565 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
566 time))
567 goto nla_put_failure;
568 }
569 }
570
571 if (large) {
572 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
573 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
574 goto nla_put_failure;
575 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
576 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
577 goto nla_put_failure;
578 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
579 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
580 goto nla_put_failure;
581 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
582 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
583 goto nla_put_failure;
584 }
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
587 DBM_TO_MBM(chan->max_power)))
588 goto nla_put_failure;
589
590 return 0;
591
592 nla_put_failure:
593 return -ENOBUFS;
594 }
595
596 /* netlink command implementations */
597
598 struct key_parse {
599 struct key_params p;
600 int idx;
601 int type;
602 bool def, defmgmt;
603 bool def_uni, def_multi;
604 };
605
606 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
607 {
608 struct nlattr *tb[NL80211_KEY_MAX + 1];
609 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
610 nl80211_key_policy);
611 if (err)
612 return err;
613
614 k->def = !!tb[NL80211_KEY_DEFAULT];
615 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
616
617 if (k->def) {
618 k->def_uni = true;
619 k->def_multi = true;
620 }
621 if (k->defmgmt)
622 k->def_multi = true;
623
624 if (tb[NL80211_KEY_IDX])
625 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
626
627 if (tb[NL80211_KEY_DATA]) {
628 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
629 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
630 }
631
632 if (tb[NL80211_KEY_SEQ]) {
633 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
634 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
635 }
636
637 if (tb[NL80211_KEY_CIPHER])
638 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
639
640 if (tb[NL80211_KEY_TYPE]) {
641 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
642 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
643 return -EINVAL;
644 }
645
646 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
647 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
648 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
649 tb[NL80211_KEY_DEFAULT_TYPES],
650 nl80211_key_default_policy);
651 if (err)
652 return err;
653
654 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
655 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
656 }
657
658 return 0;
659 }
660
661 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
662 {
663 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
664 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
665 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
666 }
667
668 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
669 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
670 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
671 }
672
673 if (info->attrs[NL80211_ATTR_KEY_IDX])
674 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
675
676 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
677 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
678
679 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
680 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
681
682 if (k->def) {
683 k->def_uni = true;
684 k->def_multi = true;
685 }
686 if (k->defmgmt)
687 k->def_multi = true;
688
689 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
690 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
691 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
692 return -EINVAL;
693 }
694
695 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
696 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
697 int err = nla_parse_nested(
698 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
699 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
700 nl80211_key_default_policy);
701 if (err)
702 return err;
703
704 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
705 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
706 }
707
708 return 0;
709 }
710
711 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
712 {
713 int err;
714
715 memset(k, 0, sizeof(*k));
716 k->idx = -1;
717 k->type = -1;
718
719 if (info->attrs[NL80211_ATTR_KEY])
720 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
721 else
722 err = nl80211_parse_key_old(info, k);
723
724 if (err)
725 return err;
726
727 if (k->def && k->defmgmt)
728 return -EINVAL;
729
730 if (k->defmgmt) {
731 if (k->def_uni || !k->def_multi)
732 return -EINVAL;
733 }
734
735 if (k->idx != -1) {
736 if (k->defmgmt) {
737 if (k->idx < 4 || k->idx > 5)
738 return -EINVAL;
739 } else if (k->def) {
740 if (k->idx < 0 || k->idx > 3)
741 return -EINVAL;
742 } else {
743 if (k->idx < 0 || k->idx > 5)
744 return -EINVAL;
745 }
746 }
747
748 return 0;
749 }
750
751 static struct cfg80211_cached_keys *
752 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
753 struct nlattr *keys, bool *no_ht)
754 {
755 struct key_parse parse;
756 struct nlattr *key;
757 struct cfg80211_cached_keys *result;
758 int rem, err, def = 0;
759
760 result = kzalloc(sizeof(*result), GFP_KERNEL);
761 if (!result)
762 return ERR_PTR(-ENOMEM);
763
764 result->def = -1;
765 result->defmgmt = -1;
766
767 nla_for_each_nested(key, keys, rem) {
768 memset(&parse, 0, sizeof(parse));
769 parse.idx = -1;
770
771 err = nl80211_parse_key_new(key, &parse);
772 if (err)
773 goto error;
774 err = -EINVAL;
775 if (!parse.p.key)
776 goto error;
777 if (parse.idx < 0 || parse.idx > 4)
778 goto error;
779 if (parse.def) {
780 if (def)
781 goto error;
782 def = 1;
783 result->def = parse.idx;
784 if (!parse.def_uni || !parse.def_multi)
785 goto error;
786 } else if (parse.defmgmt)
787 goto error;
788 err = cfg80211_validate_key_settings(rdev, &parse.p,
789 parse.idx, false, NULL);
790 if (err)
791 goto error;
792 result->params[parse.idx].cipher = parse.p.cipher;
793 result->params[parse.idx].key_len = parse.p.key_len;
794 result->params[parse.idx].key = result->data[parse.idx];
795 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
796
797 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
798 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
799 if (no_ht)
800 *no_ht = true;
801 }
802 }
803
804 return result;
805 error:
806 kfree(result);
807 return ERR_PTR(err);
808 }
809
810 static int nl80211_key_allowed(struct wireless_dev *wdev)
811 {
812 ASSERT_WDEV_LOCK(wdev);
813
814 switch (wdev->iftype) {
815 case NL80211_IFTYPE_AP:
816 case NL80211_IFTYPE_AP_VLAN:
817 case NL80211_IFTYPE_P2P_GO:
818 case NL80211_IFTYPE_MESH_POINT:
819 break;
820 case NL80211_IFTYPE_ADHOC:
821 case NL80211_IFTYPE_STATION:
822 case NL80211_IFTYPE_P2P_CLIENT:
823 if (!wdev->current_bss)
824 return -ENOLINK;
825 break;
826 default:
827 return -EINVAL;
828 }
829
830 return 0;
831 }
832
833 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
834 {
835 struct nlattr *nl_modes = nla_nest_start(msg, attr);
836 int i;
837
838 if (!nl_modes)
839 goto nla_put_failure;
840
841 i = 0;
842 while (ifmodes) {
843 if ((ifmodes & 1) && nla_put_flag(msg, i))
844 goto nla_put_failure;
845 ifmodes >>= 1;
846 i++;
847 }
848
849 nla_nest_end(msg, nl_modes);
850 return 0;
851
852 nla_put_failure:
853 return -ENOBUFS;
854 }
855
856 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
857 struct sk_buff *msg,
858 bool large)
859 {
860 struct nlattr *nl_combis;
861 int i, j;
862
863 nl_combis = nla_nest_start(msg,
864 NL80211_ATTR_INTERFACE_COMBINATIONS);
865 if (!nl_combis)
866 goto nla_put_failure;
867
868 for (i = 0; i < wiphy->n_iface_combinations; i++) {
869 const struct ieee80211_iface_combination *c;
870 struct nlattr *nl_combi, *nl_limits;
871
872 c = &wiphy->iface_combinations[i];
873
874 nl_combi = nla_nest_start(msg, i + 1);
875 if (!nl_combi)
876 goto nla_put_failure;
877
878 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
879 if (!nl_limits)
880 goto nla_put_failure;
881
882 for (j = 0; j < c->n_limits; j++) {
883 struct nlattr *nl_limit;
884
885 nl_limit = nla_nest_start(msg, j + 1);
886 if (!nl_limit)
887 goto nla_put_failure;
888 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
889 c->limits[j].max))
890 goto nla_put_failure;
891 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
892 c->limits[j].types))
893 goto nla_put_failure;
894 nla_nest_end(msg, nl_limit);
895 }
896
897 nla_nest_end(msg, nl_limits);
898
899 if (c->beacon_int_infra_match &&
900 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
901 goto nla_put_failure;
902 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
903 c->num_different_channels) ||
904 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
905 c->max_interfaces))
906 goto nla_put_failure;
907 if (large &&
908 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
909 c->radar_detect_widths))
910 goto nla_put_failure;
911
912 nla_nest_end(msg, nl_combi);
913 }
914
915 nla_nest_end(msg, nl_combis);
916
917 return 0;
918 nla_put_failure:
919 return -ENOBUFS;
920 }
921
922 #ifdef CONFIG_PM
923 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
924 struct sk_buff *msg)
925 {
926 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
927 struct nlattr *nl_tcp;
928
929 if (!tcp)
930 return 0;
931
932 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
933 if (!nl_tcp)
934 return -ENOBUFS;
935
936 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
937 tcp->data_payload_max))
938 return -ENOBUFS;
939
940 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
941 tcp->data_payload_max))
942 return -ENOBUFS;
943
944 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
945 return -ENOBUFS;
946
947 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
948 sizeof(*tcp->tok), tcp->tok))
949 return -ENOBUFS;
950
951 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
952 tcp->data_interval_max))
953 return -ENOBUFS;
954
955 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
956 tcp->wake_payload_max))
957 return -ENOBUFS;
958
959 nla_nest_end(msg, nl_tcp);
960 return 0;
961 }
962
963 static int nl80211_send_wowlan(struct sk_buff *msg,
964 struct cfg80211_registered_device *dev,
965 bool large)
966 {
967 struct nlattr *nl_wowlan;
968
969 if (!dev->wiphy.wowlan)
970 return 0;
971
972 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
973 if (!nl_wowlan)
974 return -ENOBUFS;
975
976 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
977 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
978 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
979 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
980 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
981 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
982 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
983 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
984 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
985 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
986 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
987 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
988 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
989 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
990 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
991 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
992 return -ENOBUFS;
993
994 if (dev->wiphy.wowlan->n_patterns) {
995 struct nl80211_pattern_support pat = {
996 .max_patterns = dev->wiphy.wowlan->n_patterns,
997 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
998 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
999 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1000 };
1001
1002 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1003 sizeof(pat), &pat))
1004 return -ENOBUFS;
1005 }
1006
1007 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1008 return -ENOBUFS;
1009
1010 nla_nest_end(msg, nl_wowlan);
1011
1012 return 0;
1013 }
1014 #endif
1015
1016 static int nl80211_send_coalesce(struct sk_buff *msg,
1017 struct cfg80211_registered_device *dev)
1018 {
1019 struct nl80211_coalesce_rule_support rule;
1020
1021 if (!dev->wiphy.coalesce)
1022 return 0;
1023
1024 rule.max_rules = dev->wiphy.coalesce->n_rules;
1025 rule.max_delay = dev->wiphy.coalesce->max_delay;
1026 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1027 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1028 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1029 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1030
1031 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1032 return -ENOBUFS;
1033
1034 return 0;
1035 }
1036
1037 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1038 struct ieee80211_supported_band *sband)
1039 {
1040 struct nlattr *nl_rates, *nl_rate;
1041 struct ieee80211_rate *rate;
1042 int i;
1043
1044 /* add HT info */
1045 if (sband->ht_cap.ht_supported &&
1046 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1047 sizeof(sband->ht_cap.mcs),
1048 &sband->ht_cap.mcs) ||
1049 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1050 sband->ht_cap.cap) ||
1051 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1052 sband->ht_cap.ampdu_factor) ||
1053 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1054 sband->ht_cap.ampdu_density)))
1055 return -ENOBUFS;
1056
1057 /* add VHT info */
1058 if (sband->vht_cap.vht_supported &&
1059 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1060 sizeof(sband->vht_cap.vht_mcs),
1061 &sband->vht_cap.vht_mcs) ||
1062 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1063 sband->vht_cap.cap)))
1064 return -ENOBUFS;
1065
1066 /* add bitrates */
1067 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1068 if (!nl_rates)
1069 return -ENOBUFS;
1070
1071 for (i = 0; i < sband->n_bitrates; i++) {
1072 nl_rate = nla_nest_start(msg, i);
1073 if (!nl_rate)
1074 return -ENOBUFS;
1075
1076 rate = &sband->bitrates[i];
1077 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1078 rate->bitrate))
1079 return -ENOBUFS;
1080 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1081 nla_put_flag(msg,
1082 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1083 return -ENOBUFS;
1084
1085 nla_nest_end(msg, nl_rate);
1086 }
1087
1088 nla_nest_end(msg, nl_rates);
1089
1090 return 0;
1091 }
1092
1093 static int
1094 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1095 const struct ieee80211_txrx_stypes *mgmt_stypes)
1096 {
1097 u16 stypes;
1098 struct nlattr *nl_ftypes, *nl_ifs;
1099 enum nl80211_iftype ift;
1100 int i;
1101
1102 if (!mgmt_stypes)
1103 return 0;
1104
1105 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1106 if (!nl_ifs)
1107 return -ENOBUFS;
1108
1109 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1110 nl_ftypes = nla_nest_start(msg, ift);
1111 if (!nl_ftypes)
1112 return -ENOBUFS;
1113 i = 0;
1114 stypes = mgmt_stypes[ift].tx;
1115 while (stypes) {
1116 if ((stypes & 1) &&
1117 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1118 (i << 4) | IEEE80211_FTYPE_MGMT))
1119 return -ENOBUFS;
1120 stypes >>= 1;
1121 i++;
1122 }
1123 nla_nest_end(msg, nl_ftypes);
1124 }
1125
1126 nla_nest_end(msg, nl_ifs);
1127
1128 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1129 if (!nl_ifs)
1130 return -ENOBUFS;
1131
1132 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1133 nl_ftypes = nla_nest_start(msg, ift);
1134 if (!nl_ftypes)
1135 return -ENOBUFS;
1136 i = 0;
1137 stypes = mgmt_stypes[ift].rx;
1138 while (stypes) {
1139 if ((stypes & 1) &&
1140 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1141 (i << 4) | IEEE80211_FTYPE_MGMT))
1142 return -ENOBUFS;
1143 stypes >>= 1;
1144 i++;
1145 }
1146 nla_nest_end(msg, nl_ftypes);
1147 }
1148 nla_nest_end(msg, nl_ifs);
1149
1150 return 0;
1151 }
1152
1153 struct nl80211_dump_wiphy_state {
1154 s64 filter_wiphy;
1155 long start;
1156 long split_start, band_start, chan_start;
1157 bool split;
1158 };
1159
1160 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1161 struct sk_buff *msg, u32 portid, u32 seq,
1162 int flags, struct nl80211_dump_wiphy_state *state)
1163 {
1164 void *hdr;
1165 struct nlattr *nl_bands, *nl_band;
1166 struct nlattr *nl_freqs, *nl_freq;
1167 struct nlattr *nl_cmds;
1168 enum ieee80211_band band;
1169 struct ieee80211_channel *chan;
1170 int i;
1171 const struct ieee80211_txrx_stypes *mgmt_stypes =
1172 dev->wiphy.mgmt_stypes;
1173 u32 features;
1174
1175 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1176 if (!hdr)
1177 return -ENOBUFS;
1178
1179 if (WARN_ON(!state))
1180 return -EINVAL;
1181
1182 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1183 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1184 wiphy_name(&dev->wiphy)) ||
1185 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1186 cfg80211_rdev_list_generation))
1187 goto nla_put_failure;
1188
1189 switch (state->split_start) {
1190 case 0:
1191 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1192 dev->wiphy.retry_short) ||
1193 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1194 dev->wiphy.retry_long) ||
1195 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1196 dev->wiphy.frag_threshold) ||
1197 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1198 dev->wiphy.rts_threshold) ||
1199 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1200 dev->wiphy.coverage_class) ||
1201 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1202 dev->wiphy.max_scan_ssids) ||
1203 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1204 dev->wiphy.max_sched_scan_ssids) ||
1205 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1206 dev->wiphy.max_scan_ie_len) ||
1207 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1208 dev->wiphy.max_sched_scan_ie_len) ||
1209 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1210 dev->wiphy.max_match_sets))
1211 goto nla_put_failure;
1212
1213 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1214 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1215 goto nla_put_failure;
1216 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1217 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1218 goto nla_put_failure;
1219 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1220 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1221 goto nla_put_failure;
1222 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1223 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1224 goto nla_put_failure;
1225 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1226 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1227 goto nla_put_failure;
1228 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1229 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1230 goto nla_put_failure;
1231 state->split_start++;
1232 if (state->split)
1233 break;
1234 case 1:
1235 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1236 sizeof(u32) * dev->wiphy.n_cipher_suites,
1237 dev->wiphy.cipher_suites))
1238 goto nla_put_failure;
1239
1240 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1241 dev->wiphy.max_num_pmkids))
1242 goto nla_put_failure;
1243
1244 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1245 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1246 goto nla_put_failure;
1247
1248 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1249 dev->wiphy.available_antennas_tx) ||
1250 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1251 dev->wiphy.available_antennas_rx))
1252 goto nla_put_failure;
1253
1254 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1255 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1256 dev->wiphy.probe_resp_offload))
1257 goto nla_put_failure;
1258
1259 if ((dev->wiphy.available_antennas_tx ||
1260 dev->wiphy.available_antennas_rx) &&
1261 dev->ops->get_antenna) {
1262 u32 tx_ant = 0, rx_ant = 0;
1263 int res;
1264 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1265 if (!res) {
1266 if (nla_put_u32(msg,
1267 NL80211_ATTR_WIPHY_ANTENNA_TX,
1268 tx_ant) ||
1269 nla_put_u32(msg,
1270 NL80211_ATTR_WIPHY_ANTENNA_RX,
1271 rx_ant))
1272 goto nla_put_failure;
1273 }
1274 }
1275
1276 state->split_start++;
1277 if (state->split)
1278 break;
1279 case 2:
1280 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1281 dev->wiphy.interface_modes))
1282 goto nla_put_failure;
1283 state->split_start++;
1284 if (state->split)
1285 break;
1286 case 3:
1287 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1288 if (!nl_bands)
1289 goto nla_put_failure;
1290
1291 for (band = state->band_start;
1292 band < IEEE80211_NUM_BANDS; band++) {
1293 struct ieee80211_supported_band *sband;
1294
1295 sband = dev->wiphy.bands[band];
1296
1297 if (!sband)
1298 continue;
1299
1300 nl_band = nla_nest_start(msg, band);
1301 if (!nl_band)
1302 goto nla_put_failure;
1303
1304 switch (state->chan_start) {
1305 case 0:
1306 if (nl80211_send_band_rateinfo(msg, sband))
1307 goto nla_put_failure;
1308 state->chan_start++;
1309 if (state->split)
1310 break;
1311 default:
1312 /* add frequencies */
1313 nl_freqs = nla_nest_start(
1314 msg, NL80211_BAND_ATTR_FREQS);
1315 if (!nl_freqs)
1316 goto nla_put_failure;
1317
1318 for (i = state->chan_start - 1;
1319 i < sband->n_channels;
1320 i++) {
1321 nl_freq = nla_nest_start(msg, i);
1322 if (!nl_freq)
1323 goto nla_put_failure;
1324
1325 chan = &sband->channels[i];
1326
1327 if (nl80211_msg_put_channel(
1328 msg, chan,
1329 state->split))
1330 goto nla_put_failure;
1331
1332 nla_nest_end(msg, nl_freq);
1333 if (state->split)
1334 break;
1335 }
1336 if (i < sband->n_channels)
1337 state->chan_start = i + 2;
1338 else
1339 state->chan_start = 0;
1340 nla_nest_end(msg, nl_freqs);
1341 }
1342
1343 nla_nest_end(msg, nl_band);
1344
1345 if (state->split) {
1346 /* start again here */
1347 if (state->chan_start)
1348 band--;
1349 break;
1350 }
1351 }
1352 nla_nest_end(msg, nl_bands);
1353
1354 if (band < IEEE80211_NUM_BANDS)
1355 state->band_start = band + 1;
1356 else
1357 state->band_start = 0;
1358
1359 /* if bands & channels are done, continue outside */
1360 if (state->band_start == 0 && state->chan_start == 0)
1361 state->split_start++;
1362 if (state->split)
1363 break;
1364 case 4:
1365 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1366 if (!nl_cmds)
1367 goto nla_put_failure;
1368
1369 i = 0;
1370 #define CMD(op, n) \
1371 do { \
1372 if (dev->ops->op) { \
1373 i++; \
1374 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1375 goto nla_put_failure; \
1376 } \
1377 } while (0)
1378
1379 CMD(add_virtual_intf, NEW_INTERFACE);
1380 CMD(change_virtual_intf, SET_INTERFACE);
1381 CMD(add_key, NEW_KEY);
1382 CMD(start_ap, START_AP);
1383 CMD(add_station, NEW_STATION);
1384 CMD(add_mpath, NEW_MPATH);
1385 CMD(update_mesh_config, SET_MESH_CONFIG);
1386 CMD(change_bss, SET_BSS);
1387 CMD(auth, AUTHENTICATE);
1388 CMD(assoc, ASSOCIATE);
1389 CMD(deauth, DEAUTHENTICATE);
1390 CMD(disassoc, DISASSOCIATE);
1391 CMD(join_ibss, JOIN_IBSS);
1392 CMD(join_mesh, JOIN_MESH);
1393 CMD(set_pmksa, SET_PMKSA);
1394 CMD(del_pmksa, DEL_PMKSA);
1395 CMD(flush_pmksa, FLUSH_PMKSA);
1396 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1397 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1398 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1399 CMD(mgmt_tx, FRAME);
1400 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1401 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1402 i++;
1403 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1404 goto nla_put_failure;
1405 }
1406 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1407 dev->ops->join_mesh) {
1408 i++;
1409 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1410 goto nla_put_failure;
1411 }
1412 CMD(set_wds_peer, SET_WDS_PEER);
1413 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1414 CMD(tdls_mgmt, TDLS_MGMT);
1415 CMD(tdls_oper, TDLS_OPER);
1416 }
1417 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1418 CMD(sched_scan_start, START_SCHED_SCAN);
1419 CMD(probe_client, PROBE_CLIENT);
1420 CMD(set_noack_map, SET_NOACK_MAP);
1421 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1422 i++;
1423 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1424 goto nla_put_failure;
1425 }
1426 CMD(start_p2p_device, START_P2P_DEVICE);
1427 CMD(set_mcast_rate, SET_MCAST_RATE);
1428 if (state->split) {
1429 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1430 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1431 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1432 CMD(channel_switch, CHANNEL_SWITCH);
1433 }
1434
1435 #ifdef CONFIG_NL80211_TESTMODE
1436 CMD(testmode_cmd, TESTMODE);
1437 #endif
1438
1439 #undef CMD
1440
1441 if (dev->ops->connect || dev->ops->auth) {
1442 i++;
1443 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1444 goto nla_put_failure;
1445 }
1446
1447 if (dev->ops->disconnect || dev->ops->deauth) {
1448 i++;
1449 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1450 goto nla_put_failure;
1451 }
1452
1453 nla_nest_end(msg, nl_cmds);
1454 state->split_start++;
1455 if (state->split)
1456 break;
1457 case 5:
1458 if (dev->ops->remain_on_channel &&
1459 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1460 nla_put_u32(msg,
1461 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1462 dev->wiphy.max_remain_on_channel_duration))
1463 goto nla_put_failure;
1464
1465 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1466 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1467 goto nla_put_failure;
1468
1469 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1470 goto nla_put_failure;
1471 state->split_start++;
1472 if (state->split)
1473 break;
1474 case 6:
1475 #ifdef CONFIG_PM
1476 if (nl80211_send_wowlan(msg, dev, state->split))
1477 goto nla_put_failure;
1478 state->split_start++;
1479 if (state->split)
1480 break;
1481 #else
1482 state->split_start++;
1483 #endif
1484 case 7:
1485 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1486 dev->wiphy.software_iftypes))
1487 goto nla_put_failure;
1488
1489 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1490 state->split))
1491 goto nla_put_failure;
1492
1493 state->split_start++;
1494 if (state->split)
1495 break;
1496 case 8:
1497 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1498 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1499 dev->wiphy.ap_sme_capa))
1500 goto nla_put_failure;
1501
1502 features = dev->wiphy.features;
1503 /*
1504 * We can only add the per-channel limit information if the
1505 * dump is split, otherwise it makes it too big. Therefore
1506 * only advertise it in that case.
1507 */
1508 if (state->split)
1509 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1510 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1511 goto nla_put_failure;
1512
1513 if (dev->wiphy.ht_capa_mod_mask &&
1514 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1515 sizeof(*dev->wiphy.ht_capa_mod_mask),
1516 dev->wiphy.ht_capa_mod_mask))
1517 goto nla_put_failure;
1518
1519 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1520 dev->wiphy.max_acl_mac_addrs &&
1521 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1522 dev->wiphy.max_acl_mac_addrs))
1523 goto nla_put_failure;
1524
1525 /*
1526 * Any information below this point is only available to
1527 * applications that can deal with it being split. This
1528 * helps ensure that newly added capabilities don't break
1529 * older tools by overrunning their buffers.
1530 *
1531 * We still increment split_start so that in the split
1532 * case we'll continue with more data in the next round,
1533 * but break unconditionally so unsplit data stops here.
1534 */
1535 state->split_start++;
1536 break;
1537 case 9:
1538 if (dev->wiphy.extended_capabilities &&
1539 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1540 dev->wiphy.extended_capabilities_len,
1541 dev->wiphy.extended_capabilities) ||
1542 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1543 dev->wiphy.extended_capabilities_len,
1544 dev->wiphy.extended_capabilities_mask)))
1545 goto nla_put_failure;
1546
1547 if (dev->wiphy.vht_capa_mod_mask &&
1548 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1549 sizeof(*dev->wiphy.vht_capa_mod_mask),
1550 dev->wiphy.vht_capa_mod_mask))
1551 goto nla_put_failure;
1552
1553 state->split_start++;
1554 break;
1555 case 10:
1556 if (nl80211_send_coalesce(msg, dev))
1557 goto nla_put_failure;
1558
1559 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1560 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1561 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1562 goto nla_put_failure;
1563
1564 /* done */
1565 state->split_start = 0;
1566 break;
1567 }
1568 return genlmsg_end(msg, hdr);
1569
1570 nla_put_failure:
1571 genlmsg_cancel(msg, hdr);
1572 return -EMSGSIZE;
1573 }
1574
1575 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1576 struct netlink_callback *cb,
1577 struct nl80211_dump_wiphy_state *state)
1578 {
1579 struct nlattr **tb = nl80211_fam.attrbuf;
1580 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1581 tb, nl80211_fam.maxattr, nl80211_policy);
1582 /* ignore parse errors for backward compatibility */
1583 if (ret)
1584 return 0;
1585
1586 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1587 if (tb[NL80211_ATTR_WIPHY])
1588 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1589 if (tb[NL80211_ATTR_WDEV])
1590 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1591 if (tb[NL80211_ATTR_IFINDEX]) {
1592 struct net_device *netdev;
1593 struct cfg80211_registered_device *rdev;
1594 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1595
1596 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1597 if (!netdev)
1598 return -ENODEV;
1599 if (netdev->ieee80211_ptr) {
1600 rdev = wiphy_to_dev(
1601 netdev->ieee80211_ptr->wiphy);
1602 state->filter_wiphy = rdev->wiphy_idx;
1603 }
1604 dev_put(netdev);
1605 }
1606
1607 return 0;
1608 }
1609
1610 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1611 {
1612 int idx = 0, ret;
1613 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1614 struct cfg80211_registered_device *dev;
1615
1616 rtnl_lock();
1617 if (!state) {
1618 state = kzalloc(sizeof(*state), GFP_KERNEL);
1619 if (!state) {
1620 rtnl_unlock();
1621 return -ENOMEM;
1622 }
1623 state->filter_wiphy = -1;
1624 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1625 if (ret) {
1626 kfree(state);
1627 rtnl_unlock();
1628 return ret;
1629 }
1630 cb->args[0] = (long)state;
1631 }
1632
1633 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1634 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1635 continue;
1636 if (++idx <= state->start)
1637 continue;
1638 if (state->filter_wiphy != -1 &&
1639 state->filter_wiphy != dev->wiphy_idx)
1640 continue;
1641 /* attempt to fit multiple wiphy data chunks into the skb */
1642 do {
1643 ret = nl80211_send_wiphy(dev, skb,
1644 NETLINK_CB(cb->skb).portid,
1645 cb->nlh->nlmsg_seq,
1646 NLM_F_MULTI, state);
1647 if (ret < 0) {
1648 /*
1649 * If sending the wiphy data didn't fit (ENOBUFS
1650 * or EMSGSIZE returned), this SKB is still
1651 * empty (so it's not too big because another
1652 * wiphy dataset is already in the skb) and
1653 * we've not tried to adjust the dump allocation
1654 * yet ... then adjust the alloc size to be
1655 * bigger, and return 1 but with the empty skb.
1656 * This results in an empty message being RX'ed
1657 * in userspace, but that is ignored.
1658 *
1659 * We can then retry with the larger buffer.
1660 */
1661 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1662 !skb->len &&
1663 cb->min_dump_alloc < 4096) {
1664 cb->min_dump_alloc = 4096;
1665 rtnl_unlock();
1666 return 1;
1667 }
1668 idx--;
1669 break;
1670 }
1671 } while (state->split_start > 0);
1672 break;
1673 }
1674 rtnl_unlock();
1675
1676 state->start = idx;
1677
1678 return skb->len;
1679 }
1680
1681 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1682 {
1683 kfree((void *)cb->args[0]);
1684 return 0;
1685 }
1686
1687 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1688 {
1689 struct sk_buff *msg;
1690 struct cfg80211_registered_device *dev = info->user_ptr[0];
1691 struct nl80211_dump_wiphy_state state = {};
1692
1693 msg = nlmsg_new(4096, GFP_KERNEL);
1694 if (!msg)
1695 return -ENOMEM;
1696
1697 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1698 &state) < 0) {
1699 nlmsg_free(msg);
1700 return -ENOBUFS;
1701 }
1702
1703 return genlmsg_reply(msg, info);
1704 }
1705
1706 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1707 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1708 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1709 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1710 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1711 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1712 };
1713
1714 static int parse_txq_params(struct nlattr *tb[],
1715 struct ieee80211_txq_params *txq_params)
1716 {
1717 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1718 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1719 !tb[NL80211_TXQ_ATTR_AIFS])
1720 return -EINVAL;
1721
1722 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1723 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1724 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1725 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1726 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1727
1728 if (txq_params->ac >= NL80211_NUM_ACS)
1729 return -EINVAL;
1730
1731 return 0;
1732 }
1733
1734 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1735 {
1736 /*
1737 * You can only set the channel explicitly for WDS interfaces,
1738 * all others have their channel managed via their respective
1739 * "establish a connection" command (connect, join, ...)
1740 *
1741 * For AP/GO and mesh mode, the channel can be set with the
1742 * channel userspace API, but is only stored and passed to the
1743 * low-level driver when the AP starts or the mesh is joined.
1744 * This is for backward compatibility, userspace can also give
1745 * the channel in the start-ap or join-mesh commands instead.
1746 *
1747 * Monitors are special as they are normally slaved to
1748 * whatever else is going on, so they have their own special
1749 * operation to set the monitor channel if possible.
1750 */
1751 return !wdev ||
1752 wdev->iftype == NL80211_IFTYPE_AP ||
1753 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1754 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1755 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1756 }
1757
1758 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1759 struct genl_info *info,
1760 struct cfg80211_chan_def *chandef)
1761 {
1762 u32 control_freq;
1763
1764 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1765 return -EINVAL;
1766
1767 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1768
1769 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1770 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1771 chandef->center_freq1 = control_freq;
1772 chandef->center_freq2 = 0;
1773
1774 /* Primary channel not allowed */
1775 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1776 return -EINVAL;
1777
1778 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1779 enum nl80211_channel_type chantype;
1780
1781 chantype = nla_get_u32(
1782 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1783
1784 switch (chantype) {
1785 case NL80211_CHAN_NO_HT:
1786 case NL80211_CHAN_HT20:
1787 case NL80211_CHAN_HT40PLUS:
1788 case NL80211_CHAN_HT40MINUS:
1789 cfg80211_chandef_create(chandef, chandef->chan,
1790 chantype);
1791 break;
1792 default:
1793 return -EINVAL;
1794 }
1795 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1796 chandef->width =
1797 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1798 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1799 chandef->center_freq1 =
1800 nla_get_u32(
1801 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1802 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1803 chandef->center_freq2 =
1804 nla_get_u32(
1805 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1806 }
1807
1808 if (!cfg80211_chandef_valid(chandef))
1809 return -EINVAL;
1810
1811 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1812 IEEE80211_CHAN_DISABLED))
1813 return -EINVAL;
1814
1815 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1816 chandef->width == NL80211_CHAN_WIDTH_10) &&
1817 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1818 return -EINVAL;
1819
1820 return 0;
1821 }
1822
1823 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1824 struct wireless_dev *wdev,
1825 struct genl_info *info)
1826 {
1827 struct cfg80211_chan_def chandef;
1828 int result;
1829 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1830
1831 if (wdev)
1832 iftype = wdev->iftype;
1833
1834 if (!nl80211_can_set_dev_channel(wdev))
1835 return -EOPNOTSUPP;
1836
1837 result = nl80211_parse_chandef(rdev, info, &chandef);
1838 if (result)
1839 return result;
1840
1841 switch (iftype) {
1842 case NL80211_IFTYPE_AP:
1843 case NL80211_IFTYPE_P2P_GO:
1844 if (wdev->beacon_interval) {
1845 result = -EBUSY;
1846 break;
1847 }
1848 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1849 result = -EINVAL;
1850 break;
1851 }
1852 wdev->preset_chandef = chandef;
1853 result = 0;
1854 break;
1855 case NL80211_IFTYPE_MESH_POINT:
1856 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1857 break;
1858 case NL80211_IFTYPE_MONITOR:
1859 result = cfg80211_set_monitor_channel(rdev, &chandef);
1860 break;
1861 default:
1862 result = -EINVAL;
1863 }
1864
1865 return result;
1866 }
1867
1868 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1869 {
1870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1871 struct net_device *netdev = info->user_ptr[1];
1872
1873 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1874 }
1875
1876 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1877 {
1878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1879 struct net_device *dev = info->user_ptr[1];
1880 struct wireless_dev *wdev = dev->ieee80211_ptr;
1881 const u8 *bssid;
1882
1883 if (!info->attrs[NL80211_ATTR_MAC])
1884 return -EINVAL;
1885
1886 if (netif_running(dev))
1887 return -EBUSY;
1888
1889 if (!rdev->ops->set_wds_peer)
1890 return -EOPNOTSUPP;
1891
1892 if (wdev->iftype != NL80211_IFTYPE_WDS)
1893 return -EOPNOTSUPP;
1894
1895 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1896 return rdev_set_wds_peer(rdev, dev, bssid);
1897 }
1898
1899
1900 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1901 {
1902 struct cfg80211_registered_device *rdev;
1903 struct net_device *netdev = NULL;
1904 struct wireless_dev *wdev;
1905 int result = 0, rem_txq_params = 0;
1906 struct nlattr *nl_txq_params;
1907 u32 changed;
1908 u8 retry_short = 0, retry_long = 0;
1909 u32 frag_threshold = 0, rts_threshold = 0;
1910 u8 coverage_class = 0;
1911
1912 ASSERT_RTNL();
1913
1914 /*
1915 * Try to find the wiphy and netdev. Normally this
1916 * function shouldn't need the netdev, but this is
1917 * done for backward compatibility -- previously
1918 * setting the channel was done per wiphy, but now
1919 * it is per netdev. Previous userland like hostapd
1920 * also passed a netdev to set_wiphy, so that it is
1921 * possible to let that go to the right netdev!
1922 */
1923
1924 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1925 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1926
1927 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1928 if (netdev && netdev->ieee80211_ptr)
1929 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1930 else
1931 netdev = NULL;
1932 }
1933
1934 if (!netdev) {
1935 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1936 info->attrs);
1937 if (IS_ERR(rdev))
1938 return PTR_ERR(rdev);
1939 wdev = NULL;
1940 netdev = NULL;
1941 result = 0;
1942 } else
1943 wdev = netdev->ieee80211_ptr;
1944
1945 /*
1946 * end workaround code, by now the rdev is available
1947 * and locked, and wdev may or may not be NULL.
1948 */
1949
1950 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1951 result = cfg80211_dev_rename(
1952 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1953
1954 if (result)
1955 goto bad_res;
1956
1957 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1958 struct ieee80211_txq_params txq_params;
1959 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1960
1961 if (!rdev->ops->set_txq_params) {
1962 result = -EOPNOTSUPP;
1963 goto bad_res;
1964 }
1965
1966 if (!netdev) {
1967 result = -EINVAL;
1968 goto bad_res;
1969 }
1970
1971 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1972 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1973 result = -EINVAL;
1974 goto bad_res;
1975 }
1976
1977 if (!netif_running(netdev)) {
1978 result = -ENETDOWN;
1979 goto bad_res;
1980 }
1981
1982 nla_for_each_nested(nl_txq_params,
1983 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1984 rem_txq_params) {
1985 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1986 nla_data(nl_txq_params),
1987 nla_len(nl_txq_params),
1988 txq_params_policy);
1989 result = parse_txq_params(tb, &txq_params);
1990 if (result)
1991 goto bad_res;
1992
1993 result = rdev_set_txq_params(rdev, netdev,
1994 &txq_params);
1995 if (result)
1996 goto bad_res;
1997 }
1998 }
1999
2000 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2001 result = __nl80211_set_channel(rdev,
2002 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2003 info);
2004 if (result)
2005 goto bad_res;
2006 }
2007
2008 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2009 struct wireless_dev *txp_wdev = wdev;
2010 enum nl80211_tx_power_setting type;
2011 int idx, mbm = 0;
2012
2013 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2014 txp_wdev = NULL;
2015
2016 if (!rdev->ops->set_tx_power) {
2017 result = -EOPNOTSUPP;
2018 goto bad_res;
2019 }
2020
2021 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2022 type = nla_get_u32(info->attrs[idx]);
2023
2024 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2025 (type != NL80211_TX_POWER_AUTOMATIC)) {
2026 result = -EINVAL;
2027 goto bad_res;
2028 }
2029
2030 if (type != NL80211_TX_POWER_AUTOMATIC) {
2031 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2032 mbm = nla_get_u32(info->attrs[idx]);
2033 }
2034
2035 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2036 if (result)
2037 goto bad_res;
2038 }
2039
2040 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2041 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2042 u32 tx_ant, rx_ant;
2043 if ((!rdev->wiphy.available_antennas_tx &&
2044 !rdev->wiphy.available_antennas_rx) ||
2045 !rdev->ops->set_antenna) {
2046 result = -EOPNOTSUPP;
2047 goto bad_res;
2048 }
2049
2050 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2051 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2052
2053 /* reject antenna configurations which don't match the
2054 * available antenna masks, except for the "all" mask */
2055 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2056 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2057 result = -EINVAL;
2058 goto bad_res;
2059 }
2060
2061 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2062 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2063
2064 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2065 if (result)
2066 goto bad_res;
2067 }
2068
2069 changed = 0;
2070
2071 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2072 retry_short = nla_get_u8(
2073 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2074 if (retry_short == 0) {
2075 result = -EINVAL;
2076 goto bad_res;
2077 }
2078 changed |= WIPHY_PARAM_RETRY_SHORT;
2079 }
2080
2081 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2082 retry_long = nla_get_u8(
2083 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2084 if (retry_long == 0) {
2085 result = -EINVAL;
2086 goto bad_res;
2087 }
2088 changed |= WIPHY_PARAM_RETRY_LONG;
2089 }
2090
2091 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2092 frag_threshold = nla_get_u32(
2093 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2094 if (frag_threshold < 256) {
2095 result = -EINVAL;
2096 goto bad_res;
2097 }
2098 if (frag_threshold != (u32) -1) {
2099 /*
2100 * Fragments (apart from the last one) are required to
2101 * have even length. Make the fragmentation code
2102 * simpler by stripping LSB should someone try to use
2103 * odd threshold value.
2104 */
2105 frag_threshold &= ~0x1;
2106 }
2107 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2108 }
2109
2110 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2111 rts_threshold = nla_get_u32(
2112 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2113 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2114 }
2115
2116 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2117 coverage_class = nla_get_u8(
2118 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2119 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2120 }
2121
2122 if (changed) {
2123 u8 old_retry_short, old_retry_long;
2124 u32 old_frag_threshold, old_rts_threshold;
2125 u8 old_coverage_class;
2126
2127 if (!rdev->ops->set_wiphy_params) {
2128 result = -EOPNOTSUPP;
2129 goto bad_res;
2130 }
2131
2132 old_retry_short = rdev->wiphy.retry_short;
2133 old_retry_long = rdev->wiphy.retry_long;
2134 old_frag_threshold = rdev->wiphy.frag_threshold;
2135 old_rts_threshold = rdev->wiphy.rts_threshold;
2136 old_coverage_class = rdev->wiphy.coverage_class;
2137
2138 if (changed & WIPHY_PARAM_RETRY_SHORT)
2139 rdev->wiphy.retry_short = retry_short;
2140 if (changed & WIPHY_PARAM_RETRY_LONG)
2141 rdev->wiphy.retry_long = retry_long;
2142 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2143 rdev->wiphy.frag_threshold = frag_threshold;
2144 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2145 rdev->wiphy.rts_threshold = rts_threshold;
2146 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2147 rdev->wiphy.coverage_class = coverage_class;
2148
2149 result = rdev_set_wiphy_params(rdev, changed);
2150 if (result) {
2151 rdev->wiphy.retry_short = old_retry_short;
2152 rdev->wiphy.retry_long = old_retry_long;
2153 rdev->wiphy.frag_threshold = old_frag_threshold;
2154 rdev->wiphy.rts_threshold = old_rts_threshold;
2155 rdev->wiphy.coverage_class = old_coverage_class;
2156 }
2157 }
2158
2159 bad_res:
2160 if (netdev)
2161 dev_put(netdev);
2162 return result;
2163 }
2164
2165 static inline u64 wdev_id(struct wireless_dev *wdev)
2166 {
2167 return (u64)wdev->identifier |
2168 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2169 }
2170
2171 static int nl80211_send_chandef(struct sk_buff *msg,
2172 const struct cfg80211_chan_def *chandef)
2173 {
2174 WARN_ON(!cfg80211_chandef_valid(chandef));
2175
2176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2177 chandef->chan->center_freq))
2178 return -ENOBUFS;
2179 switch (chandef->width) {
2180 case NL80211_CHAN_WIDTH_20_NOHT:
2181 case NL80211_CHAN_WIDTH_20:
2182 case NL80211_CHAN_WIDTH_40:
2183 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2184 cfg80211_get_chandef_type(chandef)))
2185 return -ENOBUFS;
2186 break;
2187 default:
2188 break;
2189 }
2190 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2191 return -ENOBUFS;
2192 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2193 return -ENOBUFS;
2194 if (chandef->center_freq2 &&
2195 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2196 return -ENOBUFS;
2197 return 0;
2198 }
2199
2200 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2201 struct cfg80211_registered_device *rdev,
2202 struct wireless_dev *wdev)
2203 {
2204 struct net_device *dev = wdev->netdev;
2205 void *hdr;
2206
2207 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2208 if (!hdr)
2209 return -1;
2210
2211 if (dev &&
2212 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2213 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2214 goto nla_put_failure;
2215
2216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2217 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2218 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2219 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2220 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2221 rdev->devlist_generation ^
2222 (cfg80211_rdev_list_generation << 2)))
2223 goto nla_put_failure;
2224
2225 if (rdev->ops->get_channel) {
2226 int ret;
2227 struct cfg80211_chan_def chandef;
2228
2229 ret = rdev_get_channel(rdev, wdev, &chandef);
2230 if (ret == 0) {
2231 if (nl80211_send_chandef(msg, &chandef))
2232 goto nla_put_failure;
2233 }
2234 }
2235
2236 if (wdev->ssid_len) {
2237 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2238 goto nla_put_failure;
2239 }
2240
2241 return genlmsg_end(msg, hdr);
2242
2243 nla_put_failure:
2244 genlmsg_cancel(msg, hdr);
2245 return -EMSGSIZE;
2246 }
2247
2248 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2249 {
2250 int wp_idx = 0;
2251 int if_idx = 0;
2252 int wp_start = cb->args[0];
2253 int if_start = cb->args[1];
2254 struct cfg80211_registered_device *rdev;
2255 struct wireless_dev *wdev;
2256
2257 rtnl_lock();
2258 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2259 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2260 continue;
2261 if (wp_idx < wp_start) {
2262 wp_idx++;
2263 continue;
2264 }
2265 if_idx = 0;
2266
2267 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2268 if (if_idx < if_start) {
2269 if_idx++;
2270 continue;
2271 }
2272 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2273 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2274 rdev, wdev) < 0) {
2275 goto out;
2276 }
2277 if_idx++;
2278 }
2279
2280 wp_idx++;
2281 }
2282 out:
2283 rtnl_unlock();
2284
2285 cb->args[0] = wp_idx;
2286 cb->args[1] = if_idx;
2287
2288 return skb->len;
2289 }
2290
2291 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2292 {
2293 struct sk_buff *msg;
2294 struct cfg80211_registered_device *dev = info->user_ptr[0];
2295 struct wireless_dev *wdev = info->user_ptr[1];
2296
2297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2298 if (!msg)
2299 return -ENOMEM;
2300
2301 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2302 dev, wdev) < 0) {
2303 nlmsg_free(msg);
2304 return -ENOBUFS;
2305 }
2306
2307 return genlmsg_reply(msg, info);
2308 }
2309
2310 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2311 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2312 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2313 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2314 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2315 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2316 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2317 };
2318
2319 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2320 {
2321 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2322 int flag;
2323
2324 *mntrflags = 0;
2325
2326 if (!nla)
2327 return -EINVAL;
2328
2329 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2330 nla, mntr_flags_policy))
2331 return -EINVAL;
2332
2333 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2334 if (flags[flag])
2335 *mntrflags |= (1<<flag);
2336
2337 return 0;
2338 }
2339
2340 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2341 struct net_device *netdev, u8 use_4addr,
2342 enum nl80211_iftype iftype)
2343 {
2344 if (!use_4addr) {
2345 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2346 return -EBUSY;
2347 return 0;
2348 }
2349
2350 switch (iftype) {
2351 case NL80211_IFTYPE_AP_VLAN:
2352 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2353 return 0;
2354 break;
2355 case NL80211_IFTYPE_STATION:
2356 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2357 return 0;
2358 break;
2359 default:
2360 break;
2361 }
2362
2363 return -EOPNOTSUPP;
2364 }
2365
2366 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2367 {
2368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2369 struct vif_params params;
2370 int err;
2371 enum nl80211_iftype otype, ntype;
2372 struct net_device *dev = info->user_ptr[1];
2373 u32 _flags, *flags = NULL;
2374 bool change = false;
2375
2376 memset(&params, 0, sizeof(params));
2377
2378 otype = ntype = dev->ieee80211_ptr->iftype;
2379
2380 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2381 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2382 if (otype != ntype)
2383 change = true;
2384 if (ntype > NL80211_IFTYPE_MAX)
2385 return -EINVAL;
2386 }
2387
2388 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2389 struct wireless_dev *wdev = dev->ieee80211_ptr;
2390
2391 if (ntype != NL80211_IFTYPE_MESH_POINT)
2392 return -EINVAL;
2393 if (netif_running(dev))
2394 return -EBUSY;
2395
2396 wdev_lock(wdev);
2397 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2398 IEEE80211_MAX_MESH_ID_LEN);
2399 wdev->mesh_id_up_len =
2400 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2401 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2402 wdev->mesh_id_up_len);
2403 wdev_unlock(wdev);
2404 }
2405
2406 if (info->attrs[NL80211_ATTR_4ADDR]) {
2407 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2408 change = true;
2409 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2410 if (err)
2411 return err;
2412 } else {
2413 params.use_4addr = -1;
2414 }
2415
2416 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2417 if (ntype != NL80211_IFTYPE_MONITOR)
2418 return -EINVAL;
2419 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2420 &_flags);
2421 if (err)
2422 return err;
2423
2424 flags = &_flags;
2425 change = true;
2426 }
2427
2428 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2429 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2430 return -EOPNOTSUPP;
2431
2432 if (change)
2433 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2434 else
2435 err = 0;
2436
2437 if (!err && params.use_4addr != -1)
2438 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2439
2440 return err;
2441 }
2442
2443 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2444 {
2445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2446 struct vif_params params;
2447 struct wireless_dev *wdev;
2448 struct sk_buff *msg;
2449 int err;
2450 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2451 u32 flags;
2452
2453 memset(&params, 0, sizeof(params));
2454
2455 if (!info->attrs[NL80211_ATTR_IFNAME])
2456 return -EINVAL;
2457
2458 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2459 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2460 if (type > NL80211_IFTYPE_MAX)
2461 return -EINVAL;
2462 }
2463
2464 if (!rdev->ops->add_virtual_intf ||
2465 !(rdev->wiphy.interface_modes & (1 << type)))
2466 return -EOPNOTSUPP;
2467
2468 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2469 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2470 ETH_ALEN);
2471 if (!is_valid_ether_addr(params.macaddr))
2472 return -EADDRNOTAVAIL;
2473 }
2474
2475 if (info->attrs[NL80211_ATTR_4ADDR]) {
2476 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2477 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2478 if (err)
2479 return err;
2480 }
2481
2482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2483 if (!msg)
2484 return -ENOMEM;
2485
2486 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2487 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2488 &flags);
2489
2490 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2491 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2492 return -EOPNOTSUPP;
2493
2494 wdev = rdev_add_virtual_intf(rdev,
2495 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2496 type, err ? NULL : &flags, &params);
2497 if (IS_ERR(wdev)) {
2498 nlmsg_free(msg);
2499 return PTR_ERR(wdev);
2500 }
2501
2502 switch (type) {
2503 case NL80211_IFTYPE_MESH_POINT:
2504 if (!info->attrs[NL80211_ATTR_MESH_ID])
2505 break;
2506 wdev_lock(wdev);
2507 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2508 IEEE80211_MAX_MESH_ID_LEN);
2509 wdev->mesh_id_up_len =
2510 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2511 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2512 wdev->mesh_id_up_len);
2513 wdev_unlock(wdev);
2514 break;
2515 case NL80211_IFTYPE_P2P_DEVICE:
2516 /*
2517 * P2P Device doesn't have a netdev, so doesn't go
2518 * through the netdev notifier and must be added here
2519 */
2520 mutex_init(&wdev->mtx);
2521 INIT_LIST_HEAD(&wdev->event_list);
2522 spin_lock_init(&wdev->event_lock);
2523 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2524 spin_lock_init(&wdev->mgmt_registrations_lock);
2525
2526 wdev->identifier = ++rdev->wdev_id;
2527 list_add_rcu(&wdev->list, &rdev->wdev_list);
2528 rdev->devlist_generation++;
2529 break;
2530 default:
2531 break;
2532 }
2533
2534 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2535 rdev, wdev) < 0) {
2536 nlmsg_free(msg);
2537 return -ENOBUFS;
2538 }
2539
2540 return genlmsg_reply(msg, info);
2541 }
2542
2543 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2544 {
2545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2546 struct wireless_dev *wdev = info->user_ptr[1];
2547
2548 if (!rdev->ops->del_virtual_intf)
2549 return -EOPNOTSUPP;
2550
2551 /*
2552 * If we remove a wireless device without a netdev then clear
2553 * user_ptr[1] so that nl80211_post_doit won't dereference it
2554 * to check if it needs to do dev_put(). Otherwise it crashes
2555 * since the wdev has been freed, unlike with a netdev where
2556 * we need the dev_put() for the netdev to really be freed.
2557 */
2558 if (!wdev->netdev)
2559 info->user_ptr[1] = NULL;
2560
2561 return rdev_del_virtual_intf(rdev, wdev);
2562 }
2563
2564 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2565 {
2566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2567 struct net_device *dev = info->user_ptr[1];
2568 u16 noack_map;
2569
2570 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2571 return -EINVAL;
2572
2573 if (!rdev->ops->set_noack_map)
2574 return -EOPNOTSUPP;
2575
2576 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2577
2578 return rdev_set_noack_map(rdev, dev, noack_map);
2579 }
2580
2581 struct get_key_cookie {
2582 struct sk_buff *msg;
2583 int error;
2584 int idx;
2585 };
2586
2587 static void get_key_callback(void *c, struct key_params *params)
2588 {
2589 struct nlattr *key;
2590 struct get_key_cookie *cookie = c;
2591
2592 if ((params->key &&
2593 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2594 params->key_len, params->key)) ||
2595 (params->seq &&
2596 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2597 params->seq_len, params->seq)) ||
2598 (params->cipher &&
2599 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2600 params->cipher)))
2601 goto nla_put_failure;
2602
2603 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2604 if (!key)
2605 goto nla_put_failure;
2606
2607 if ((params->key &&
2608 nla_put(cookie->msg, NL80211_KEY_DATA,
2609 params->key_len, params->key)) ||
2610 (params->seq &&
2611 nla_put(cookie->msg, NL80211_KEY_SEQ,
2612 params->seq_len, params->seq)) ||
2613 (params->cipher &&
2614 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2615 params->cipher)))
2616 goto nla_put_failure;
2617
2618 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2619 goto nla_put_failure;
2620
2621 nla_nest_end(cookie->msg, key);
2622
2623 return;
2624 nla_put_failure:
2625 cookie->error = 1;
2626 }
2627
2628 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2629 {
2630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2631 int err;
2632 struct net_device *dev = info->user_ptr[1];
2633 u8 key_idx = 0;
2634 const u8 *mac_addr = NULL;
2635 bool pairwise;
2636 struct get_key_cookie cookie = {
2637 .error = 0,
2638 };
2639 void *hdr;
2640 struct sk_buff *msg;
2641
2642 if (info->attrs[NL80211_ATTR_KEY_IDX])
2643 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2644
2645 if (key_idx > 5)
2646 return -EINVAL;
2647
2648 if (info->attrs[NL80211_ATTR_MAC])
2649 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2650
2651 pairwise = !!mac_addr;
2652 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2653 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2654 if (kt >= NUM_NL80211_KEYTYPES)
2655 return -EINVAL;
2656 if (kt != NL80211_KEYTYPE_GROUP &&
2657 kt != NL80211_KEYTYPE_PAIRWISE)
2658 return -EINVAL;
2659 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2660 }
2661
2662 if (!rdev->ops->get_key)
2663 return -EOPNOTSUPP;
2664
2665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2666 if (!msg)
2667 return -ENOMEM;
2668
2669 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2670 NL80211_CMD_NEW_KEY);
2671 if (!hdr)
2672 return -ENOBUFS;
2673
2674 cookie.msg = msg;
2675 cookie.idx = key_idx;
2676
2677 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2678 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2679 goto nla_put_failure;
2680 if (mac_addr &&
2681 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2682 goto nla_put_failure;
2683
2684 if (pairwise && mac_addr &&
2685 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2686 return -ENOENT;
2687
2688 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2689 get_key_callback);
2690
2691 if (err)
2692 goto free_msg;
2693
2694 if (cookie.error)
2695 goto nla_put_failure;
2696
2697 genlmsg_end(msg, hdr);
2698 return genlmsg_reply(msg, info);
2699
2700 nla_put_failure:
2701 err = -ENOBUFS;
2702 free_msg:
2703 nlmsg_free(msg);
2704 return err;
2705 }
2706
2707 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2708 {
2709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710 struct key_parse key;
2711 int err;
2712 struct net_device *dev = info->user_ptr[1];
2713
2714 err = nl80211_parse_key(info, &key);
2715 if (err)
2716 return err;
2717
2718 if (key.idx < 0)
2719 return -EINVAL;
2720
2721 /* only support setting default key */
2722 if (!key.def && !key.defmgmt)
2723 return -EINVAL;
2724
2725 wdev_lock(dev->ieee80211_ptr);
2726
2727 if (key.def) {
2728 if (!rdev->ops->set_default_key) {
2729 err = -EOPNOTSUPP;
2730 goto out;
2731 }
2732
2733 err = nl80211_key_allowed(dev->ieee80211_ptr);
2734 if (err)
2735 goto out;
2736
2737 err = rdev_set_default_key(rdev, dev, key.idx,
2738 key.def_uni, key.def_multi);
2739
2740 if (err)
2741 goto out;
2742
2743 #ifdef CONFIG_CFG80211_WEXT
2744 dev->ieee80211_ptr->wext.default_key = key.idx;
2745 #endif
2746 } else {
2747 if (key.def_uni || !key.def_multi) {
2748 err = -EINVAL;
2749 goto out;
2750 }
2751
2752 if (!rdev->ops->set_default_mgmt_key) {
2753 err = -EOPNOTSUPP;
2754 goto out;
2755 }
2756
2757 err = nl80211_key_allowed(dev->ieee80211_ptr);
2758 if (err)
2759 goto out;
2760
2761 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2762 if (err)
2763 goto out;
2764
2765 #ifdef CONFIG_CFG80211_WEXT
2766 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2767 #endif
2768 }
2769
2770 out:
2771 wdev_unlock(dev->ieee80211_ptr);
2772
2773 return err;
2774 }
2775
2776 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2777 {
2778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2779 int err;
2780 struct net_device *dev = info->user_ptr[1];
2781 struct key_parse key;
2782 const u8 *mac_addr = NULL;
2783
2784 err = nl80211_parse_key(info, &key);
2785 if (err)
2786 return err;
2787
2788 if (!key.p.key)
2789 return -EINVAL;
2790
2791 if (info->attrs[NL80211_ATTR_MAC])
2792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2793
2794 if (key.type == -1) {
2795 if (mac_addr)
2796 key.type = NL80211_KEYTYPE_PAIRWISE;
2797 else
2798 key.type = NL80211_KEYTYPE_GROUP;
2799 }
2800
2801 /* for now */
2802 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2803 key.type != NL80211_KEYTYPE_GROUP)
2804 return -EINVAL;
2805
2806 if (!rdev->ops->add_key)
2807 return -EOPNOTSUPP;
2808
2809 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2810 key.type == NL80211_KEYTYPE_PAIRWISE,
2811 mac_addr))
2812 return -EINVAL;
2813
2814 wdev_lock(dev->ieee80211_ptr);
2815 err = nl80211_key_allowed(dev->ieee80211_ptr);
2816 if (!err)
2817 err = rdev_add_key(rdev, dev, key.idx,
2818 key.type == NL80211_KEYTYPE_PAIRWISE,
2819 mac_addr, &key.p);
2820 wdev_unlock(dev->ieee80211_ptr);
2821
2822 return err;
2823 }
2824
2825 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2826 {
2827 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2828 int err;
2829 struct net_device *dev = info->user_ptr[1];
2830 u8 *mac_addr = NULL;
2831 struct key_parse key;
2832
2833 err = nl80211_parse_key(info, &key);
2834 if (err)
2835 return err;
2836
2837 if (info->attrs[NL80211_ATTR_MAC])
2838 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2839
2840 if (key.type == -1) {
2841 if (mac_addr)
2842 key.type = NL80211_KEYTYPE_PAIRWISE;
2843 else
2844 key.type = NL80211_KEYTYPE_GROUP;
2845 }
2846
2847 /* for now */
2848 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2849 key.type != NL80211_KEYTYPE_GROUP)
2850 return -EINVAL;
2851
2852 if (!rdev->ops->del_key)
2853 return -EOPNOTSUPP;
2854
2855 wdev_lock(dev->ieee80211_ptr);
2856 err = nl80211_key_allowed(dev->ieee80211_ptr);
2857
2858 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2859 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2860 err = -ENOENT;
2861
2862 if (!err)
2863 err = rdev_del_key(rdev, dev, key.idx,
2864 key.type == NL80211_KEYTYPE_PAIRWISE,
2865 mac_addr);
2866
2867 #ifdef CONFIG_CFG80211_WEXT
2868 if (!err) {
2869 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2870 dev->ieee80211_ptr->wext.default_key = -1;
2871 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2872 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2873 }
2874 #endif
2875 wdev_unlock(dev->ieee80211_ptr);
2876
2877 return err;
2878 }
2879
2880 /* This function returns an error or the number of nested attributes */
2881 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2882 {
2883 struct nlattr *attr;
2884 int n_entries = 0, tmp;
2885
2886 nla_for_each_nested(attr, nl_attr, tmp) {
2887 if (nla_len(attr) != ETH_ALEN)
2888 return -EINVAL;
2889
2890 n_entries++;
2891 }
2892
2893 return n_entries;
2894 }
2895
2896 /*
2897 * This function parses ACL information and allocates memory for ACL data.
2898 * On successful return, the calling function is responsible to free the
2899 * ACL buffer returned by this function.
2900 */
2901 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2902 struct genl_info *info)
2903 {
2904 enum nl80211_acl_policy acl_policy;
2905 struct nlattr *attr;
2906 struct cfg80211_acl_data *acl;
2907 int i = 0, n_entries, tmp;
2908
2909 if (!wiphy->max_acl_mac_addrs)
2910 return ERR_PTR(-EOPNOTSUPP);
2911
2912 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2913 return ERR_PTR(-EINVAL);
2914
2915 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2916 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2917 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2918 return ERR_PTR(-EINVAL);
2919
2920 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2921 return ERR_PTR(-EINVAL);
2922
2923 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2924 if (n_entries < 0)
2925 return ERR_PTR(n_entries);
2926
2927 if (n_entries > wiphy->max_acl_mac_addrs)
2928 return ERR_PTR(-ENOTSUPP);
2929
2930 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2931 GFP_KERNEL);
2932 if (!acl)
2933 return ERR_PTR(-ENOMEM);
2934
2935 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2936 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2937 i++;
2938 }
2939
2940 acl->n_acl_entries = n_entries;
2941 acl->acl_policy = acl_policy;
2942
2943 return acl;
2944 }
2945
2946 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2947 {
2948 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2949 struct net_device *dev = info->user_ptr[1];
2950 struct cfg80211_acl_data *acl;
2951 int err;
2952
2953 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2954 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2955 return -EOPNOTSUPP;
2956
2957 if (!dev->ieee80211_ptr->beacon_interval)
2958 return -EINVAL;
2959
2960 acl = parse_acl_data(&rdev->wiphy, info);
2961 if (IS_ERR(acl))
2962 return PTR_ERR(acl);
2963
2964 err = rdev_set_mac_acl(rdev, dev, acl);
2965
2966 kfree(acl);
2967
2968 return err;
2969 }
2970
2971 static int nl80211_parse_beacon(struct nlattr *attrs[],
2972 struct cfg80211_beacon_data *bcn)
2973 {
2974 bool haveinfo = false;
2975
2976 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2977 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2978 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2979 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2980 return -EINVAL;
2981
2982 memset(bcn, 0, sizeof(*bcn));
2983
2984 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2985 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2986 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2987 if (!bcn->head_len)
2988 return -EINVAL;
2989 haveinfo = true;
2990 }
2991
2992 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2993 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2994 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2995 haveinfo = true;
2996 }
2997
2998 if (!haveinfo)
2999 return -EINVAL;
3000
3001 if (attrs[NL80211_ATTR_IE]) {
3002 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3003 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3004 }
3005
3006 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3007 bcn->proberesp_ies =
3008 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3009 bcn->proberesp_ies_len =
3010 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3011 }
3012
3013 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3014 bcn->assocresp_ies =
3015 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3016 bcn->assocresp_ies_len =
3017 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3018 }
3019
3020 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3021 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3022 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3023 }
3024
3025 return 0;
3026 }
3027
3028 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3029 struct cfg80211_ap_settings *params)
3030 {
3031 struct wireless_dev *wdev;
3032 bool ret = false;
3033
3034 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3035 if (wdev->iftype != NL80211_IFTYPE_AP &&
3036 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3037 continue;
3038
3039 if (!wdev->preset_chandef.chan)
3040 continue;
3041
3042 params->chandef = wdev->preset_chandef;
3043 ret = true;
3044 break;
3045 }
3046
3047 return ret;
3048 }
3049
3050 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3051 enum nl80211_auth_type auth_type,
3052 enum nl80211_commands cmd)
3053 {
3054 if (auth_type > NL80211_AUTHTYPE_MAX)
3055 return false;
3056
3057 switch (cmd) {
3058 case NL80211_CMD_AUTHENTICATE:
3059 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3060 auth_type == NL80211_AUTHTYPE_SAE)
3061 return false;
3062 return true;
3063 case NL80211_CMD_CONNECT:
3064 case NL80211_CMD_START_AP:
3065 /* SAE not supported yet */
3066 if (auth_type == NL80211_AUTHTYPE_SAE)
3067 return false;
3068 return true;
3069 default:
3070 return false;
3071 }
3072 }
3073
3074 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3075 {
3076 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3077 struct net_device *dev = info->user_ptr[1];
3078 struct wireless_dev *wdev = dev->ieee80211_ptr;
3079 struct cfg80211_ap_settings params;
3080 int err;
3081 u8 radar_detect_width = 0;
3082
3083 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3084 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3085 return -EOPNOTSUPP;
3086
3087 if (!rdev->ops->start_ap)
3088 return -EOPNOTSUPP;
3089
3090 if (wdev->beacon_interval)
3091 return -EALREADY;
3092
3093 memset(&params, 0, sizeof(params));
3094
3095 /* these are required for START_AP */
3096 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3097 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3098 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3099 return -EINVAL;
3100
3101 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3102 if (err)
3103 return err;
3104
3105 params.beacon_interval =
3106 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3107 params.dtim_period =
3108 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3109
3110 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3111 if (err)
3112 return err;
3113
3114 /*
3115 * In theory, some of these attributes should be required here
3116 * but since they were not used when the command was originally
3117 * added, keep them optional for old user space programs to let
3118 * them continue to work with drivers that do not need the
3119 * additional information -- drivers must check!
3120 */
3121 if (info->attrs[NL80211_ATTR_SSID]) {
3122 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3123 params.ssid_len =
3124 nla_len(info->attrs[NL80211_ATTR_SSID]);
3125 if (params.ssid_len == 0 ||
3126 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3127 return -EINVAL;
3128 }
3129
3130 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3131 params.hidden_ssid = nla_get_u32(
3132 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3133 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3134 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3135 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3136 return -EINVAL;
3137 }
3138
3139 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3140
3141 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3142 params.auth_type = nla_get_u32(
3143 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3144 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3145 NL80211_CMD_START_AP))
3146 return -EINVAL;
3147 } else
3148 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3149
3150 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3151 NL80211_MAX_NR_CIPHER_SUITES);
3152 if (err)
3153 return err;
3154
3155 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3156 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3157 return -EOPNOTSUPP;
3158 params.inactivity_timeout = nla_get_u16(
3159 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3160 }
3161
3162 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3164 return -EINVAL;
3165 params.p2p_ctwindow =
3166 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3167 if (params.p2p_ctwindow > 127)
3168 return -EINVAL;
3169 if (params.p2p_ctwindow != 0 &&
3170 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3171 return -EINVAL;
3172 }
3173
3174 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3175 u8 tmp;
3176
3177 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3178 return -EINVAL;
3179 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3180 if (tmp > 1)
3181 return -EINVAL;
3182 params.p2p_opp_ps = tmp;
3183 if (params.p2p_opp_ps != 0 &&
3184 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3185 return -EINVAL;
3186 }
3187
3188 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3189 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3190 if (err)
3191 return err;
3192 } else if (wdev->preset_chandef.chan) {
3193 params.chandef = wdev->preset_chandef;
3194 } else if (!nl80211_get_ap_channel(rdev, &params))
3195 return -EINVAL;
3196
3197 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3198 return -EINVAL;
3199
3200 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3201 if (err < 0)
3202 return err;
3203 if (err) {
3204 radar_detect_width = BIT(params.chandef.width);
3205 params.radar_required = true;
3206 }
3207
3208 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3209 params.chandef.chan,
3210 CHAN_MODE_SHARED,
3211 radar_detect_width);
3212 if (err)
3213 return err;
3214
3215 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3216 params.acl = parse_acl_data(&rdev->wiphy, info);
3217 if (IS_ERR(params.acl))
3218 return PTR_ERR(params.acl);
3219 }
3220
3221 wdev_lock(wdev);
3222 err = rdev_start_ap(rdev, dev, &params);
3223 if (!err) {
3224 wdev->preset_chandef = params.chandef;
3225 wdev->beacon_interval = params.beacon_interval;
3226 wdev->channel = params.chandef.chan;
3227 wdev->ssid_len = params.ssid_len;
3228 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3229 }
3230 wdev_unlock(wdev);
3231
3232 kfree(params.acl);
3233
3234 return err;
3235 }
3236
3237 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3238 {
3239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3240 struct net_device *dev = info->user_ptr[1];
3241 struct wireless_dev *wdev = dev->ieee80211_ptr;
3242 struct cfg80211_beacon_data params;
3243 int err;
3244
3245 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3246 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3247 return -EOPNOTSUPP;
3248
3249 if (!rdev->ops->change_beacon)
3250 return -EOPNOTSUPP;
3251
3252 if (!wdev->beacon_interval)
3253 return -EINVAL;
3254
3255 err = nl80211_parse_beacon(info->attrs, &params);
3256 if (err)
3257 return err;
3258
3259 wdev_lock(wdev);
3260 err = rdev_change_beacon(rdev, dev, &params);
3261 wdev_unlock(wdev);
3262
3263 return err;
3264 }
3265
3266 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3267 {
3268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3269 struct net_device *dev = info->user_ptr[1];
3270
3271 return cfg80211_stop_ap(rdev, dev);
3272 }
3273
3274 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3275 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3276 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3277 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3278 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3279 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3280 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3281 };
3282
3283 static int parse_station_flags(struct genl_info *info,
3284 enum nl80211_iftype iftype,
3285 struct station_parameters *params)
3286 {
3287 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3288 struct nlattr *nla;
3289 int flag;
3290
3291 /*
3292 * Try parsing the new attribute first so userspace
3293 * can specify both for older kernels.
3294 */
3295 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3296 if (nla) {
3297 struct nl80211_sta_flag_update *sta_flags;
3298
3299 sta_flags = nla_data(nla);
3300 params->sta_flags_mask = sta_flags->mask;
3301 params->sta_flags_set = sta_flags->set;
3302 params->sta_flags_set &= params->sta_flags_mask;
3303 if ((params->sta_flags_mask |
3304 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3305 return -EINVAL;
3306 return 0;
3307 }
3308
3309 /* if present, parse the old attribute */
3310
3311 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3312 if (!nla)
3313 return 0;
3314
3315 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3316 nla, sta_flags_policy))
3317 return -EINVAL;
3318
3319 /*
3320 * Only allow certain flags for interface types so that
3321 * other attributes are silently ignored. Remember that
3322 * this is backward compatibility code with old userspace
3323 * and shouldn't be hit in other cases anyway.
3324 */
3325 switch (iftype) {
3326 case NL80211_IFTYPE_AP:
3327 case NL80211_IFTYPE_AP_VLAN:
3328 case NL80211_IFTYPE_P2P_GO:
3329 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3330 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3331 BIT(NL80211_STA_FLAG_WME) |
3332 BIT(NL80211_STA_FLAG_MFP);
3333 break;
3334 case NL80211_IFTYPE_P2P_CLIENT:
3335 case NL80211_IFTYPE_STATION:
3336 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3337 BIT(NL80211_STA_FLAG_TDLS_PEER);
3338 break;
3339 case NL80211_IFTYPE_MESH_POINT:
3340 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3341 BIT(NL80211_STA_FLAG_MFP) |
3342 BIT(NL80211_STA_FLAG_AUTHORIZED);
3343 default:
3344 return -EINVAL;
3345 }
3346
3347 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3348 if (flags[flag]) {
3349 params->sta_flags_set |= (1<<flag);
3350
3351 /* no longer support new API additions in old API */
3352 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3353 return -EINVAL;
3354 }
3355 }
3356
3357 return 0;
3358 }
3359
3360 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3361 int attr)
3362 {
3363 struct nlattr *rate;
3364 u32 bitrate;
3365 u16 bitrate_compat;
3366
3367 rate = nla_nest_start(msg, attr);
3368 if (!rate)
3369 return false;
3370
3371 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3372 bitrate = cfg80211_calculate_bitrate(info);
3373 /* report 16-bit bitrate only if we can */
3374 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3375 if (bitrate > 0 &&
3376 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3377 return false;
3378 if (bitrate_compat > 0 &&
3379 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3380 return false;
3381
3382 if (info->flags & RATE_INFO_FLAGS_MCS) {
3383 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3384 return false;
3385 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3386 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3387 return false;
3388 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3389 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3390 return false;
3391 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3392 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3393 return false;
3394 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3395 return false;
3396 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3397 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3398 return false;
3399 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3400 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3401 return false;
3402 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3403 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3404 return false;
3405 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3406 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3407 return false;
3408 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3409 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3410 return false;
3411 }
3412
3413 nla_nest_end(msg, rate);
3414 return true;
3415 }
3416
3417 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3418 int id)
3419 {
3420 void *attr;
3421 int i = 0;
3422
3423 if (!mask)
3424 return true;
3425
3426 attr = nla_nest_start(msg, id);
3427 if (!attr)
3428 return false;
3429
3430 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3431 if (!(mask & BIT(i)))
3432 continue;
3433
3434 if (nla_put_u8(msg, i, signal[i]))
3435 return false;
3436 }
3437
3438 nla_nest_end(msg, attr);
3439
3440 return true;
3441 }
3442
3443 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3444 int flags,
3445 struct cfg80211_registered_device *rdev,
3446 struct net_device *dev,
3447 const u8 *mac_addr, struct station_info *sinfo)
3448 {
3449 void *hdr;
3450 struct nlattr *sinfoattr, *bss_param;
3451
3452 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3453 if (!hdr)
3454 return -1;
3455
3456 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3457 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3458 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3459 goto nla_put_failure;
3460
3461 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3462 if (!sinfoattr)
3463 goto nla_put_failure;
3464 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3465 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3466 sinfo->connected_time))
3467 goto nla_put_failure;
3468 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3469 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3470 sinfo->inactive_time))
3471 goto nla_put_failure;
3472 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3473 STATION_INFO_RX_BYTES64)) &&
3474 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3475 (u32)sinfo->rx_bytes))
3476 goto nla_put_failure;
3477 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3478 STATION_INFO_TX_BYTES64)) &&
3479 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3480 (u32)sinfo->tx_bytes))
3481 goto nla_put_failure;
3482 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3483 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3484 sinfo->rx_bytes))
3485 goto nla_put_failure;
3486 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3487 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3488 sinfo->tx_bytes))
3489 goto nla_put_failure;
3490 if ((sinfo->filled & STATION_INFO_LLID) &&
3491 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3492 goto nla_put_failure;
3493 if ((sinfo->filled & STATION_INFO_PLID) &&
3494 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3495 goto nla_put_failure;
3496 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3497 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3498 sinfo->plink_state))
3499 goto nla_put_failure;
3500 switch (rdev->wiphy.signal_type) {
3501 case CFG80211_SIGNAL_TYPE_MBM:
3502 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3503 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3504 sinfo->signal))
3505 goto nla_put_failure;
3506 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3507 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3508 sinfo->signal_avg))
3509 goto nla_put_failure;
3510 break;
3511 default:
3512 break;
3513 }
3514 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3515 if (!nl80211_put_signal(msg, sinfo->chains,
3516 sinfo->chain_signal,
3517 NL80211_STA_INFO_CHAIN_SIGNAL))
3518 goto nla_put_failure;
3519 }
3520 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3521 if (!nl80211_put_signal(msg, sinfo->chains,
3522 sinfo->chain_signal_avg,
3523 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3524 goto nla_put_failure;
3525 }
3526 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3527 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3528 NL80211_STA_INFO_TX_BITRATE))
3529 goto nla_put_failure;
3530 }
3531 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3532 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3533 NL80211_STA_INFO_RX_BITRATE))
3534 goto nla_put_failure;
3535 }
3536 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3537 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3538 sinfo->rx_packets))
3539 goto nla_put_failure;
3540 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3541 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3542 sinfo->tx_packets))
3543 goto nla_put_failure;
3544 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3545 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3546 sinfo->tx_retries))
3547 goto nla_put_failure;
3548 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3549 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3550 sinfo->tx_failed))
3551 goto nla_put_failure;
3552 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3553 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3554 sinfo->beacon_loss_count))
3555 goto nla_put_failure;
3556 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3557 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3558 sinfo->local_pm))
3559 goto nla_put_failure;
3560 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3561 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3562 sinfo->peer_pm))
3563 goto nla_put_failure;
3564 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3565 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3566 sinfo->nonpeer_pm))
3567 goto nla_put_failure;
3568 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3569 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3570 if (!bss_param)
3571 goto nla_put_failure;
3572
3573 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3574 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3575 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3576 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3577 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3578 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3579 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3580 sinfo->bss_param.dtim_period) ||
3581 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3582 sinfo->bss_param.beacon_interval))
3583 goto nla_put_failure;
3584
3585 nla_nest_end(msg, bss_param);
3586 }
3587 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3588 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3589 sizeof(struct nl80211_sta_flag_update),
3590 &sinfo->sta_flags))
3591 goto nla_put_failure;
3592 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3593 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3594 sinfo->t_offset))
3595 goto nla_put_failure;
3596 nla_nest_end(msg, sinfoattr);
3597
3598 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3599 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3600 sinfo->assoc_req_ies))
3601 goto nla_put_failure;
3602
3603 return genlmsg_end(msg, hdr);
3604
3605 nla_put_failure:
3606 genlmsg_cancel(msg, hdr);
3607 return -EMSGSIZE;
3608 }
3609
3610 static int nl80211_dump_station(struct sk_buff *skb,
3611 struct netlink_callback *cb)
3612 {
3613 struct station_info sinfo;
3614 struct cfg80211_registered_device *dev;
3615 struct wireless_dev *wdev;
3616 u8 mac_addr[ETH_ALEN];
3617 int sta_idx = cb->args[2];
3618 int err;
3619
3620 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3621 if (err)
3622 return err;
3623
3624 if (!wdev->netdev) {
3625 err = -EINVAL;
3626 goto out_err;
3627 }
3628
3629 if (!dev->ops->dump_station) {
3630 err = -EOPNOTSUPP;
3631 goto out_err;
3632 }
3633
3634 while (1) {
3635 memset(&sinfo, 0, sizeof(sinfo));
3636 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3637 mac_addr, &sinfo);
3638 if (err == -ENOENT)
3639 break;
3640 if (err)
3641 goto out_err;
3642
3643 if (nl80211_send_station(skb,
3644 NETLINK_CB(cb->skb).portid,
3645 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3646 dev, wdev->netdev, mac_addr,
3647 &sinfo) < 0)
3648 goto out;
3649
3650 sta_idx++;
3651 }
3652
3653
3654 out:
3655 cb->args[2] = sta_idx;
3656 err = skb->len;
3657 out_err:
3658 nl80211_finish_wdev_dump(dev);
3659
3660 return err;
3661 }
3662
3663 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3664 {
3665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3666 struct net_device *dev = info->user_ptr[1];
3667 struct station_info sinfo;
3668 struct sk_buff *msg;
3669 u8 *mac_addr = NULL;
3670 int err;
3671
3672 memset(&sinfo, 0, sizeof(sinfo));
3673
3674 if (!info->attrs[NL80211_ATTR_MAC])
3675 return -EINVAL;
3676
3677 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3678
3679 if (!rdev->ops->get_station)
3680 return -EOPNOTSUPP;
3681
3682 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3683 if (err)
3684 return err;
3685
3686 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3687 if (!msg)
3688 return -ENOMEM;
3689
3690 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3691 rdev, dev, mac_addr, &sinfo) < 0) {
3692 nlmsg_free(msg);
3693 return -ENOBUFS;
3694 }
3695
3696 return genlmsg_reply(msg, info);
3697 }
3698
3699 int cfg80211_check_station_change(struct wiphy *wiphy,
3700 struct station_parameters *params,
3701 enum cfg80211_station_type statype)
3702 {
3703 if (params->listen_interval != -1)
3704 return -EINVAL;
3705 if (params->aid)
3706 return -EINVAL;
3707
3708 /* When you run into this, adjust the code below for the new flag */
3709 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3710
3711 switch (statype) {
3712 case CFG80211_STA_MESH_PEER_KERNEL:
3713 case CFG80211_STA_MESH_PEER_USER:
3714 /*
3715 * No ignoring the TDLS flag here -- the userspace mesh
3716 * code doesn't have the bug of including TDLS in the
3717 * mask everywhere.
3718 */
3719 if (params->sta_flags_mask &
3720 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3721 BIT(NL80211_STA_FLAG_MFP) |
3722 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3723 return -EINVAL;
3724 break;
3725 case CFG80211_STA_TDLS_PEER_SETUP:
3726 case CFG80211_STA_TDLS_PEER_ACTIVE:
3727 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3728 return -EINVAL;
3729 /* ignore since it can't change */
3730 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3731 break;
3732 default:
3733 /* disallow mesh-specific things */
3734 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3735 return -EINVAL;
3736 if (params->local_pm)
3737 return -EINVAL;
3738 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3739 return -EINVAL;
3740 }
3741
3742 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3743 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3744 /* TDLS can't be set, ... */
3745 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3746 return -EINVAL;
3747 /*
3748 * ... but don't bother the driver with it. This works around
3749 * a hostapd/wpa_supplicant issue -- it always includes the
3750 * TLDS_PEER flag in the mask even for AP mode.
3751 */
3752 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3753 }
3754
3755 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3756 /* reject other things that can't change */
3757 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3758 return -EINVAL;
3759 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3760 return -EINVAL;
3761 if (params->supported_rates)
3762 return -EINVAL;
3763 if (params->ext_capab || params->ht_capa || params->vht_capa)
3764 return -EINVAL;
3765 }
3766
3767 if (statype != CFG80211_STA_AP_CLIENT) {
3768 if (params->vlan)
3769 return -EINVAL;
3770 }
3771
3772 switch (statype) {
3773 case CFG80211_STA_AP_MLME_CLIENT:
3774 /* Use this only for authorizing/unauthorizing a station */
3775 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3776 return -EOPNOTSUPP;
3777 break;
3778 case CFG80211_STA_AP_CLIENT:
3779 /* accept only the listed bits */
3780 if (params->sta_flags_mask &
3781 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3782 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3783 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3784 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3785 BIT(NL80211_STA_FLAG_WME) |
3786 BIT(NL80211_STA_FLAG_MFP)))
3787 return -EINVAL;
3788
3789 /* but authenticated/associated only if driver handles it */
3790 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3791 params->sta_flags_mask &
3792 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3793 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3794 return -EINVAL;
3795 break;
3796 case CFG80211_STA_IBSS:
3797 case CFG80211_STA_AP_STA:
3798 /* reject any changes other than AUTHORIZED */
3799 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3800 return -EINVAL;
3801 break;
3802 case CFG80211_STA_TDLS_PEER_SETUP:
3803 /* reject any changes other than AUTHORIZED or WME */
3804 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3805 BIT(NL80211_STA_FLAG_WME)))
3806 return -EINVAL;
3807 /* force (at least) rates when authorizing */
3808 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3809 !params->supported_rates)
3810 return -EINVAL;
3811 break;
3812 case CFG80211_STA_TDLS_PEER_ACTIVE:
3813 /* reject any changes */
3814 return -EINVAL;
3815 case CFG80211_STA_MESH_PEER_KERNEL:
3816 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3817 return -EINVAL;
3818 break;
3819 case CFG80211_STA_MESH_PEER_USER:
3820 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3821 return -EINVAL;
3822 break;
3823 }
3824
3825 return 0;
3826 }
3827 EXPORT_SYMBOL(cfg80211_check_station_change);
3828
3829 /*
3830 * Get vlan interface making sure it is running and on the right wiphy.
3831 */
3832 static struct net_device *get_vlan(struct genl_info *info,
3833 struct cfg80211_registered_device *rdev)
3834 {
3835 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3836 struct net_device *v;
3837 int ret;
3838
3839 if (!vlanattr)
3840 return NULL;
3841
3842 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3843 if (!v)
3844 return ERR_PTR(-ENODEV);
3845
3846 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3847 ret = -EINVAL;
3848 goto error;
3849 }
3850
3851 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3852 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3853 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3854 ret = -EINVAL;
3855 goto error;
3856 }
3857
3858 if (!netif_running(v)) {
3859 ret = -ENETDOWN;
3860 goto error;
3861 }
3862
3863 return v;
3864 error:
3865 dev_put(v);
3866 return ERR_PTR(ret);
3867 }
3868
3869 static struct nla_policy
3870 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3871 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3872 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3873 };
3874
3875 static int nl80211_parse_sta_wme(struct genl_info *info,
3876 struct station_parameters *params)
3877 {
3878 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3879 struct nlattr *nla;
3880 int err;
3881
3882 /* parse WME attributes if present */
3883 if (!info->attrs[NL80211_ATTR_STA_WME])
3884 return 0;
3885
3886 nla = info->attrs[NL80211_ATTR_STA_WME];
3887 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3888 nl80211_sta_wme_policy);
3889 if (err)
3890 return err;
3891
3892 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3893 params->uapsd_queues = nla_get_u8(
3894 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3895 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3896 return -EINVAL;
3897
3898 if (tb[NL80211_STA_WME_MAX_SP])
3899 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3900
3901 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3902 return -EINVAL;
3903
3904 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3905
3906 return 0;
3907 }
3908
3909 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3910 struct station_parameters *params)
3911 {
3912 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3913 params->supported_channels =
3914 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3915 params->supported_channels_len =
3916 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3917 /*
3918 * Need to include at least one (first channel, number of
3919 * channels) tuple for each subband, and must have proper
3920 * tuples for the rest of the data as well.
3921 */
3922 if (params->supported_channels_len < 2)
3923 return -EINVAL;
3924 if (params->supported_channels_len % 2)
3925 return -EINVAL;
3926 }
3927
3928 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3929 params->supported_oper_classes =
3930 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3931 params->supported_oper_classes_len =
3932 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3933 /*
3934 * The value of the Length field of the Supported Operating
3935 * Classes element is between 2 and 253.
3936 */
3937 if (params->supported_oper_classes_len < 2 ||
3938 params->supported_oper_classes_len > 253)
3939 return -EINVAL;
3940 }
3941 return 0;
3942 }
3943
3944 static int nl80211_set_station_tdls(struct genl_info *info,
3945 struct station_parameters *params)
3946 {
3947 int err;
3948 /* Dummy STA entry gets updated once the peer capabilities are known */
3949 if (info->attrs[NL80211_ATTR_PEER_AID])
3950 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3951 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3952 params->ht_capa =
3953 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3954 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3955 params->vht_capa =
3956 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3957
3958 err = nl80211_parse_sta_channel_info(info, params);
3959 if (err)
3960 return err;
3961
3962 return nl80211_parse_sta_wme(info, params);
3963 }
3964
3965 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3966 {
3967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3968 struct net_device *dev = info->user_ptr[1];
3969 struct station_parameters params;
3970 u8 *mac_addr;
3971 int err;
3972
3973 memset(&params, 0, sizeof(params));
3974
3975 params.listen_interval = -1;
3976
3977 if (!rdev->ops->change_station)
3978 return -EOPNOTSUPP;
3979
3980 if (info->attrs[NL80211_ATTR_STA_AID])
3981 return -EINVAL;
3982
3983 if (!info->attrs[NL80211_ATTR_MAC])
3984 return -EINVAL;
3985
3986 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3987
3988 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3989 params.supported_rates =
3990 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3991 params.supported_rates_len =
3992 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3993 }
3994
3995 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3996 params.capability =
3997 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3998 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3999 }
4000
4001 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4002 params.ext_capab =
4003 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4004 params.ext_capab_len =
4005 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4006 }
4007
4008 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4009 return -EINVAL;
4010
4011 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4012 return -EINVAL;
4013
4014 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4015 params.plink_action =
4016 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4017 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4018 return -EINVAL;
4019 }
4020
4021 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4022 params.plink_state =
4023 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4024 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4025 return -EINVAL;
4026 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4027 }
4028
4029 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4030 enum nl80211_mesh_power_mode pm = nla_get_u32(
4031 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4032
4033 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4034 pm > NL80211_MESH_POWER_MAX)
4035 return -EINVAL;
4036
4037 params.local_pm = pm;
4038 }
4039
4040 /* Include parameters for TDLS peer (will check later) */
4041 err = nl80211_set_station_tdls(info, &params);
4042 if (err)
4043 return err;
4044
4045 params.vlan = get_vlan(info, rdev);
4046 if (IS_ERR(params.vlan))
4047 return PTR_ERR(params.vlan);
4048
4049 switch (dev->ieee80211_ptr->iftype) {
4050 case NL80211_IFTYPE_AP:
4051 case NL80211_IFTYPE_AP_VLAN:
4052 case NL80211_IFTYPE_P2P_GO:
4053 case NL80211_IFTYPE_P2P_CLIENT:
4054 case NL80211_IFTYPE_STATION:
4055 case NL80211_IFTYPE_ADHOC:
4056 case NL80211_IFTYPE_MESH_POINT:
4057 break;
4058 default:
4059 err = -EOPNOTSUPP;
4060 goto out_put_vlan;
4061 }
4062
4063 /* driver will call cfg80211_check_station_change() */
4064 err = rdev_change_station(rdev, dev, mac_addr, &params);
4065
4066 out_put_vlan:
4067 if (params.vlan)
4068 dev_put(params.vlan);
4069
4070 return err;
4071 }
4072
4073 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4074 {
4075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4076 int err;
4077 struct net_device *dev = info->user_ptr[1];
4078 struct station_parameters params;
4079 u8 *mac_addr = NULL;
4080
4081 memset(&params, 0, sizeof(params));
4082
4083 if (!rdev->ops->add_station)
4084 return -EOPNOTSUPP;
4085
4086 if (!info->attrs[NL80211_ATTR_MAC])
4087 return -EINVAL;
4088
4089 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4090 return -EINVAL;
4091
4092 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4093 return -EINVAL;
4094
4095 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4096 !info->attrs[NL80211_ATTR_PEER_AID])
4097 return -EINVAL;
4098
4099 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4100 params.supported_rates =
4101 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4102 params.supported_rates_len =
4103 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4104 params.listen_interval =
4105 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4106
4107 if (info->attrs[NL80211_ATTR_PEER_AID])
4108 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4109 else
4110 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4111 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4112 return -EINVAL;
4113
4114 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4115 params.capability =
4116 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4117 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4118 }
4119
4120 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4121 params.ext_capab =
4122 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4123 params.ext_capab_len =
4124 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4125 }
4126
4127 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4128 params.ht_capa =
4129 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4130
4131 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4132 params.vht_capa =
4133 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4134
4135 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4136 params.plink_action =
4137 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4138 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4139 return -EINVAL;
4140 }
4141
4142 err = nl80211_parse_sta_channel_info(info, &params);
4143 if (err)
4144 return err;
4145
4146 err = nl80211_parse_sta_wme(info, &params);
4147 if (err)
4148 return err;
4149
4150 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4151 return -EINVAL;
4152
4153 /* When you run into this, adjust the code below for the new flag */
4154 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4155
4156 switch (dev->ieee80211_ptr->iftype) {
4157 case NL80211_IFTYPE_AP:
4158 case NL80211_IFTYPE_AP_VLAN:
4159 case NL80211_IFTYPE_P2P_GO:
4160 /* ignore WME attributes if iface/sta is not capable */
4161 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4162 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4163 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4164
4165 /* TDLS peers cannot be added */
4166 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4167 info->attrs[NL80211_ATTR_PEER_AID])
4168 return -EINVAL;
4169 /* but don't bother the driver with it */
4170 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4171
4172 /* allow authenticated/associated only if driver handles it */
4173 if (!(rdev->wiphy.features &
4174 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4175 params.sta_flags_mask &
4176 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4177 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4178 return -EINVAL;
4179
4180 /* must be last in here for error handling */
4181 params.vlan = get_vlan(info, rdev);
4182 if (IS_ERR(params.vlan))
4183 return PTR_ERR(params.vlan);
4184 break;
4185 case NL80211_IFTYPE_MESH_POINT:
4186 /* ignore uAPSD data */
4187 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4188
4189 /* associated is disallowed */
4190 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4191 return -EINVAL;
4192 /* TDLS peers cannot be added */
4193 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4194 info->attrs[NL80211_ATTR_PEER_AID])
4195 return -EINVAL;
4196 break;
4197 case NL80211_IFTYPE_STATION:
4198 case NL80211_IFTYPE_P2P_CLIENT:
4199 /* ignore uAPSD data */
4200 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4201
4202 /* these are disallowed */
4203 if (params.sta_flags_mask &
4204 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4205 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4206 return -EINVAL;
4207 /* Only TDLS peers can be added */
4208 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4209 return -EINVAL;
4210 /* Can only add if TDLS ... */
4211 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4212 return -EOPNOTSUPP;
4213 /* ... with external setup is supported */
4214 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4215 return -EOPNOTSUPP;
4216 /*
4217 * Older wpa_supplicant versions always mark the TDLS peer
4218 * as authorized, but it shouldn't yet be.
4219 */
4220 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4221 break;
4222 default:
4223 return -EOPNOTSUPP;
4224 }
4225
4226 /* be aware of params.vlan when changing code here */
4227
4228 err = rdev_add_station(rdev, dev, mac_addr, &params);
4229
4230 if (params.vlan)
4231 dev_put(params.vlan);
4232 return err;
4233 }
4234
4235 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4236 {
4237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4238 struct net_device *dev = info->user_ptr[1];
4239 u8 *mac_addr = NULL;
4240
4241 if (info->attrs[NL80211_ATTR_MAC])
4242 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4243
4244 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4246 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4247 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4248 return -EINVAL;
4249
4250 if (!rdev->ops->del_station)
4251 return -EOPNOTSUPP;
4252
4253 return rdev_del_station(rdev, dev, mac_addr);
4254 }
4255
4256 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4257 int flags, struct net_device *dev,
4258 u8 *dst, u8 *next_hop,
4259 struct mpath_info *pinfo)
4260 {
4261 void *hdr;
4262 struct nlattr *pinfoattr;
4263
4264 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4265 if (!hdr)
4266 return -1;
4267
4268 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4269 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4270 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4271 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4272 goto nla_put_failure;
4273
4274 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4275 if (!pinfoattr)
4276 goto nla_put_failure;
4277 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4278 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4279 pinfo->frame_qlen))
4280 goto nla_put_failure;
4281 if (((pinfo->filled & MPATH_INFO_SN) &&
4282 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4283 ((pinfo->filled & MPATH_INFO_METRIC) &&
4284 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4285 pinfo->metric)) ||
4286 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4287 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4288 pinfo->exptime)) ||
4289 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4290 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4291 pinfo->flags)) ||
4292 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4293 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4294 pinfo->discovery_timeout)) ||
4295 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4296 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4297 pinfo->discovery_retries)))
4298 goto nla_put_failure;
4299
4300 nla_nest_end(msg, pinfoattr);
4301
4302 return genlmsg_end(msg, hdr);
4303
4304 nla_put_failure:
4305 genlmsg_cancel(msg, hdr);
4306 return -EMSGSIZE;
4307 }
4308
4309 static int nl80211_dump_mpath(struct sk_buff *skb,
4310 struct netlink_callback *cb)
4311 {
4312 struct mpath_info pinfo;
4313 struct cfg80211_registered_device *dev;
4314 struct wireless_dev *wdev;
4315 u8 dst[ETH_ALEN];
4316 u8 next_hop[ETH_ALEN];
4317 int path_idx = cb->args[2];
4318 int err;
4319
4320 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4321 if (err)
4322 return err;
4323
4324 if (!dev->ops->dump_mpath) {
4325 err = -EOPNOTSUPP;
4326 goto out_err;
4327 }
4328
4329 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4330 err = -EOPNOTSUPP;
4331 goto out_err;
4332 }
4333
4334 while (1) {
4335 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4336 next_hop, &pinfo);
4337 if (err == -ENOENT)
4338 break;
4339 if (err)
4340 goto out_err;
4341
4342 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4343 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4344 wdev->netdev, dst, next_hop,
4345 &pinfo) < 0)
4346 goto out;
4347
4348 path_idx++;
4349 }
4350
4351
4352 out:
4353 cb->args[2] = path_idx;
4354 err = skb->len;
4355 out_err:
4356 nl80211_finish_wdev_dump(dev);
4357 return err;
4358 }
4359
4360 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4361 {
4362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4363 int err;
4364 struct net_device *dev = info->user_ptr[1];
4365 struct mpath_info pinfo;
4366 struct sk_buff *msg;
4367 u8 *dst = NULL;
4368 u8 next_hop[ETH_ALEN];
4369
4370 memset(&pinfo, 0, sizeof(pinfo));
4371
4372 if (!info->attrs[NL80211_ATTR_MAC])
4373 return -EINVAL;
4374
4375 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4376
4377 if (!rdev->ops->get_mpath)
4378 return -EOPNOTSUPP;
4379
4380 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4381 return -EOPNOTSUPP;
4382
4383 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4384 if (err)
4385 return err;
4386
4387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4388 if (!msg)
4389 return -ENOMEM;
4390
4391 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4392 dev, dst, next_hop, &pinfo) < 0) {
4393 nlmsg_free(msg);
4394 return -ENOBUFS;
4395 }
4396
4397 return genlmsg_reply(msg, info);
4398 }
4399
4400 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4401 {
4402 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4403 struct net_device *dev = info->user_ptr[1];
4404 u8 *dst = NULL;
4405 u8 *next_hop = NULL;
4406
4407 if (!info->attrs[NL80211_ATTR_MAC])
4408 return -EINVAL;
4409
4410 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4411 return -EINVAL;
4412
4413 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4414 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4415
4416 if (!rdev->ops->change_mpath)
4417 return -EOPNOTSUPP;
4418
4419 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4420 return -EOPNOTSUPP;
4421
4422 return rdev_change_mpath(rdev, dev, dst, next_hop);
4423 }
4424
4425 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4426 {
4427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4428 struct net_device *dev = info->user_ptr[1];
4429 u8 *dst = NULL;
4430 u8 *next_hop = NULL;
4431
4432 if (!info->attrs[NL80211_ATTR_MAC])
4433 return -EINVAL;
4434
4435 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4436 return -EINVAL;
4437
4438 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4439 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4440
4441 if (!rdev->ops->add_mpath)
4442 return -EOPNOTSUPP;
4443
4444 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4445 return -EOPNOTSUPP;
4446
4447 return rdev_add_mpath(rdev, dev, dst, next_hop);
4448 }
4449
4450 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4451 {
4452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4453 struct net_device *dev = info->user_ptr[1];
4454 u8 *dst = NULL;
4455
4456 if (info->attrs[NL80211_ATTR_MAC])
4457 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458
4459 if (!rdev->ops->del_mpath)
4460 return -EOPNOTSUPP;
4461
4462 return rdev_del_mpath(rdev, dev, dst);
4463 }
4464
4465 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4466 {
4467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4468 struct net_device *dev = info->user_ptr[1];
4469 struct wireless_dev *wdev = dev->ieee80211_ptr;
4470 struct bss_parameters params;
4471 int err;
4472
4473 memset(&params, 0, sizeof(params));
4474 /* default to not changing parameters */
4475 params.use_cts_prot = -1;
4476 params.use_short_preamble = -1;
4477 params.use_short_slot_time = -1;
4478 params.ap_isolate = -1;
4479 params.ht_opmode = -1;
4480 params.p2p_ctwindow = -1;
4481 params.p2p_opp_ps = -1;
4482
4483 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4484 params.use_cts_prot =
4485 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4486 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4487 params.use_short_preamble =
4488 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4489 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4490 params.use_short_slot_time =
4491 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4492 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4493 params.basic_rates =
4494 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4495 params.basic_rates_len =
4496 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4497 }
4498 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4499 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4500 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4501 params.ht_opmode =
4502 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4503
4504 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4505 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4506 return -EINVAL;
4507 params.p2p_ctwindow =
4508 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4509 if (params.p2p_ctwindow < 0)
4510 return -EINVAL;
4511 if (params.p2p_ctwindow != 0 &&
4512 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4513 return -EINVAL;
4514 }
4515
4516 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4517 u8 tmp;
4518
4519 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4520 return -EINVAL;
4521 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4522 if (tmp > 1)
4523 return -EINVAL;
4524 params.p2p_opp_ps = tmp;
4525 if (params.p2p_opp_ps &&
4526 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4527 return -EINVAL;
4528 }
4529
4530 if (!rdev->ops->change_bss)
4531 return -EOPNOTSUPP;
4532
4533 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4534 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4535 return -EOPNOTSUPP;
4536
4537 wdev_lock(wdev);
4538 err = rdev_change_bss(rdev, dev, &params);
4539 wdev_unlock(wdev);
4540
4541 return err;
4542 }
4543
4544 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4545 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4546 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4547 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4548 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4549 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4550 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4551 };
4552
4553 static int parse_reg_rule(struct nlattr *tb[],
4554 struct ieee80211_reg_rule *reg_rule)
4555 {
4556 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4557 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4558
4559 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4560 return -EINVAL;
4561 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4562 return -EINVAL;
4563 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4564 return -EINVAL;
4565 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4566 return -EINVAL;
4567 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4568 return -EINVAL;
4569
4570 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4571
4572 freq_range->start_freq_khz =
4573 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4574 freq_range->end_freq_khz =
4575 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4576 freq_range->max_bandwidth_khz =
4577 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4578
4579 power_rule->max_eirp =
4580 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4581
4582 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4583 power_rule->max_antenna_gain =
4584 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4585
4586 return 0;
4587 }
4588
4589 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4590 {
4591 int r;
4592 char *data = NULL;
4593 enum nl80211_user_reg_hint_type user_reg_hint_type;
4594
4595 /*
4596 * You should only get this when cfg80211 hasn't yet initialized
4597 * completely when built-in to the kernel right between the time
4598 * window between nl80211_init() and regulatory_init(), if that is
4599 * even possible.
4600 */
4601 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4602 return -EINPROGRESS;
4603
4604 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4605 return -EINVAL;
4606
4607 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4608
4609 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4610 user_reg_hint_type =
4611 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4612 else
4613 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4614
4615 switch (user_reg_hint_type) {
4616 case NL80211_USER_REG_HINT_USER:
4617 case NL80211_USER_REG_HINT_CELL_BASE:
4618 break;
4619 default:
4620 return -EINVAL;
4621 }
4622
4623 r = regulatory_hint_user(data, user_reg_hint_type);
4624
4625 return r;
4626 }
4627
4628 static int nl80211_get_mesh_config(struct sk_buff *skb,
4629 struct genl_info *info)
4630 {
4631 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4632 struct net_device *dev = info->user_ptr[1];
4633 struct wireless_dev *wdev = dev->ieee80211_ptr;
4634 struct mesh_config cur_params;
4635 int err = 0;
4636 void *hdr;
4637 struct nlattr *pinfoattr;
4638 struct sk_buff *msg;
4639
4640 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4641 return -EOPNOTSUPP;
4642
4643 if (!rdev->ops->get_mesh_config)
4644 return -EOPNOTSUPP;
4645
4646 wdev_lock(wdev);
4647 /* If not connected, get default parameters */
4648 if (!wdev->mesh_id_len)
4649 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4650 else
4651 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4652 wdev_unlock(wdev);
4653
4654 if (err)
4655 return err;
4656
4657 /* Draw up a netlink message to send back */
4658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4659 if (!msg)
4660 return -ENOMEM;
4661 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4662 NL80211_CMD_GET_MESH_CONFIG);
4663 if (!hdr)
4664 goto out;
4665 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4666 if (!pinfoattr)
4667 goto nla_put_failure;
4668 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4669 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4670 cur_params.dot11MeshRetryTimeout) ||
4671 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4672 cur_params.dot11MeshConfirmTimeout) ||
4673 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4674 cur_params.dot11MeshHoldingTimeout) ||
4675 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4676 cur_params.dot11MeshMaxPeerLinks) ||
4677 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4678 cur_params.dot11MeshMaxRetries) ||
4679 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4680 cur_params.dot11MeshTTL) ||
4681 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4682 cur_params.element_ttl) ||
4683 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4684 cur_params.auto_open_plinks) ||
4685 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4686 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4687 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4688 cur_params.dot11MeshHWMPmaxPREQretries) ||
4689 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4690 cur_params.path_refresh_time) ||
4691 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4692 cur_params.min_discovery_timeout) ||
4693 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4694 cur_params.dot11MeshHWMPactivePathTimeout) ||
4695 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4696 cur_params.dot11MeshHWMPpreqMinInterval) ||
4697 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4698 cur_params.dot11MeshHWMPperrMinInterval) ||
4699 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4700 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4701 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4702 cur_params.dot11MeshHWMPRootMode) ||
4703 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4704 cur_params.dot11MeshHWMPRannInterval) ||
4705 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4706 cur_params.dot11MeshGateAnnouncementProtocol) ||
4707 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4708 cur_params.dot11MeshForwarding) ||
4709 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4710 cur_params.rssi_threshold) ||
4711 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4712 cur_params.ht_opmode) ||
4713 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4714 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4715 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4716 cur_params.dot11MeshHWMProotInterval) ||
4717 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4718 cur_params.dot11MeshHWMPconfirmationInterval) ||
4719 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4720 cur_params.power_mode) ||
4721 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4722 cur_params.dot11MeshAwakeWindowDuration) ||
4723 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4724 cur_params.plink_timeout))
4725 goto nla_put_failure;
4726 nla_nest_end(msg, pinfoattr);
4727 genlmsg_end(msg, hdr);
4728 return genlmsg_reply(msg, info);
4729
4730 nla_put_failure:
4731 genlmsg_cancel(msg, hdr);
4732 out:
4733 nlmsg_free(msg);
4734 return -ENOBUFS;
4735 }
4736
4737 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4738 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4739 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4740 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4741 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4742 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4743 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4744 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4745 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4746 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4747 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4748 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4749 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4750 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4751 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4752 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4753 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4754 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4755 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4756 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4757 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4758 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4759 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4760 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4761 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4762 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4763 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4764 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4765 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4766 };
4767
4768 static const struct nla_policy
4769 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4770 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4771 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4772 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4773 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4774 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4775 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4776 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4777 .len = IEEE80211_MAX_DATA_LEN },
4778 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4779 };
4780
4781 static int nl80211_parse_mesh_config(struct genl_info *info,
4782 struct mesh_config *cfg,
4783 u32 *mask_out)
4784 {
4785 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4786 u32 mask = 0;
4787
4788 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4789 do { \
4790 if (tb[attr]) { \
4791 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4792 return -EINVAL; \
4793 cfg->param = fn(tb[attr]); \
4794 mask |= (1 << (attr - 1)); \
4795 } \
4796 } while (0)
4797
4798
4799 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4800 return -EINVAL;
4801 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4802 info->attrs[NL80211_ATTR_MESH_CONFIG],
4803 nl80211_meshconf_params_policy))
4804 return -EINVAL;
4805
4806 /* This makes sure that there aren't more than 32 mesh config
4807 * parameters (otherwise our bitfield scheme would not work.) */
4808 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4809
4810 /* Fill in the params struct */
4811 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4812 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4813 nla_get_u16);
4814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4815 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4816 nla_get_u16);
4817 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4818 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4819 nla_get_u16);
4820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4821 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4822 nla_get_u16);
4823 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4824 mask, NL80211_MESHCONF_MAX_RETRIES,
4825 nla_get_u8);
4826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4827 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4828 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4829 mask, NL80211_MESHCONF_ELEMENT_TTL,
4830 nla_get_u8);
4831 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4832 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4833 nla_get_u8);
4834 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4835 1, 255, mask,
4836 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4837 nla_get_u32);
4838 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4839 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4840 nla_get_u8);
4841 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4842 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4843 nla_get_u32);
4844 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4845 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4846 nla_get_u16);
4847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4848 1, 65535, mask,
4849 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4850 nla_get_u32);
4851 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4852 1, 65535, mask,
4853 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4854 nla_get_u16);
4855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4856 1, 65535, mask,
4857 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4858 nla_get_u16);
4859 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4860 dot11MeshHWMPnetDiameterTraversalTime,
4861 1, 65535, mask,
4862 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4863 nla_get_u16);
4864 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4865 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4866 nla_get_u8);
4867 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4868 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4869 nla_get_u16);
4870 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4871 dot11MeshGateAnnouncementProtocol, 0, 1,
4872 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4873 nla_get_u8);
4874 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4875 mask, NL80211_MESHCONF_FORWARDING,
4876 nla_get_u8);
4877 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4878 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4879 nla_get_s32);
4880 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4881 mask, NL80211_MESHCONF_HT_OPMODE,
4882 nla_get_u16);
4883 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4884 1, 65535, mask,
4885 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4886 nla_get_u32);
4887 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4888 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4889 nla_get_u16);
4890 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4891 dot11MeshHWMPconfirmationInterval,
4892 1, 65535, mask,
4893 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4894 nla_get_u16);
4895 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4896 NL80211_MESH_POWER_ACTIVE,
4897 NL80211_MESH_POWER_MAX,
4898 mask, NL80211_MESHCONF_POWER_MODE,
4899 nla_get_u32);
4900 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4901 0, 65535, mask,
4902 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4903 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4904 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4905 nla_get_u32);
4906 if (mask_out)
4907 *mask_out = mask;
4908
4909 return 0;
4910
4911 #undef FILL_IN_MESH_PARAM_IF_SET
4912 }
4913
4914 static int nl80211_parse_mesh_setup(struct genl_info *info,
4915 struct mesh_setup *setup)
4916 {
4917 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4918 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4919
4920 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4921 return -EINVAL;
4922 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4923 info->attrs[NL80211_ATTR_MESH_SETUP],
4924 nl80211_mesh_setup_params_policy))
4925 return -EINVAL;
4926
4927 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4928 setup->sync_method =
4929 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4930 IEEE80211_SYNC_METHOD_VENDOR :
4931 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4932
4933 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4934 setup->path_sel_proto =
4935 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4936 IEEE80211_PATH_PROTOCOL_VENDOR :
4937 IEEE80211_PATH_PROTOCOL_HWMP;
4938
4939 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4940 setup->path_metric =
4941 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4942 IEEE80211_PATH_METRIC_VENDOR :
4943 IEEE80211_PATH_METRIC_AIRTIME;
4944
4945
4946 if (tb[NL80211_MESH_SETUP_IE]) {
4947 struct nlattr *ieattr =
4948 tb[NL80211_MESH_SETUP_IE];
4949 if (!is_valid_ie_attr(ieattr))
4950 return -EINVAL;
4951 setup->ie = nla_data(ieattr);
4952 setup->ie_len = nla_len(ieattr);
4953 }
4954 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4955 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4956 return -EINVAL;
4957 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4958 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4959 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4960 if (setup->is_secure)
4961 setup->user_mpm = true;
4962
4963 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4964 if (!setup->user_mpm)
4965 return -EINVAL;
4966 setup->auth_id =
4967 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4968 }
4969
4970 return 0;
4971 }
4972
4973 static int nl80211_update_mesh_config(struct sk_buff *skb,
4974 struct genl_info *info)
4975 {
4976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4977 struct net_device *dev = info->user_ptr[1];
4978 struct wireless_dev *wdev = dev->ieee80211_ptr;
4979 struct mesh_config cfg;
4980 u32 mask;
4981 int err;
4982
4983 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4984 return -EOPNOTSUPP;
4985
4986 if (!rdev->ops->update_mesh_config)
4987 return -EOPNOTSUPP;
4988
4989 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4990 if (err)
4991 return err;
4992
4993 wdev_lock(wdev);
4994 if (!wdev->mesh_id_len)
4995 err = -ENOLINK;
4996
4997 if (!err)
4998 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4999
5000 wdev_unlock(wdev);
5001
5002 return err;
5003 }
5004
5005 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5006 {
5007 const struct ieee80211_regdomain *regdom;
5008 struct sk_buff *msg;
5009 void *hdr = NULL;
5010 struct nlattr *nl_reg_rules;
5011 unsigned int i;
5012
5013 if (!cfg80211_regdomain)
5014 return -EINVAL;
5015
5016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5017 if (!msg)
5018 return -ENOBUFS;
5019
5020 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5021 NL80211_CMD_GET_REG);
5022 if (!hdr)
5023 goto put_failure;
5024
5025 if (reg_last_request_cell_base() &&
5026 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5027 NL80211_USER_REG_HINT_CELL_BASE))
5028 goto nla_put_failure;
5029
5030 rcu_read_lock();
5031 regdom = rcu_dereference(cfg80211_regdomain);
5032
5033 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5034 (regdom->dfs_region &&
5035 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5036 goto nla_put_failure_rcu;
5037
5038 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5039 if (!nl_reg_rules)
5040 goto nla_put_failure_rcu;
5041
5042 for (i = 0; i < regdom->n_reg_rules; i++) {
5043 struct nlattr *nl_reg_rule;
5044 const struct ieee80211_reg_rule *reg_rule;
5045 const struct ieee80211_freq_range *freq_range;
5046 const struct ieee80211_power_rule *power_rule;
5047
5048 reg_rule = &regdom->reg_rules[i];
5049 freq_range = &reg_rule->freq_range;
5050 power_rule = &reg_rule->power_rule;
5051
5052 nl_reg_rule = nla_nest_start(msg, i);
5053 if (!nl_reg_rule)
5054 goto nla_put_failure_rcu;
5055
5056 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5057 reg_rule->flags) ||
5058 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5059 freq_range->start_freq_khz) ||
5060 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5061 freq_range->end_freq_khz) ||
5062 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5063 freq_range->max_bandwidth_khz) ||
5064 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5065 power_rule->max_antenna_gain) ||
5066 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5067 power_rule->max_eirp))
5068 goto nla_put_failure_rcu;
5069
5070 nla_nest_end(msg, nl_reg_rule);
5071 }
5072 rcu_read_unlock();
5073
5074 nla_nest_end(msg, nl_reg_rules);
5075
5076 genlmsg_end(msg, hdr);
5077 return genlmsg_reply(msg, info);
5078
5079 nla_put_failure_rcu:
5080 rcu_read_unlock();
5081 nla_put_failure:
5082 genlmsg_cancel(msg, hdr);
5083 put_failure:
5084 nlmsg_free(msg);
5085 return -EMSGSIZE;
5086 }
5087
5088 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5089 {
5090 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5091 struct nlattr *nl_reg_rule;
5092 char *alpha2 = NULL;
5093 int rem_reg_rules = 0, r = 0;
5094 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5095 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5096 struct ieee80211_regdomain *rd = NULL;
5097
5098 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5099 return -EINVAL;
5100
5101 if (!info->attrs[NL80211_ATTR_REG_RULES])
5102 return -EINVAL;
5103
5104 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5105
5106 if (info->attrs[NL80211_ATTR_DFS_REGION])
5107 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5108
5109 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5110 rem_reg_rules) {
5111 num_rules++;
5112 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5113 return -EINVAL;
5114 }
5115
5116 if (!reg_is_valid_request(alpha2))
5117 return -EINVAL;
5118
5119 size_of_regd = sizeof(struct ieee80211_regdomain) +
5120 num_rules * sizeof(struct ieee80211_reg_rule);
5121
5122 rd = kzalloc(size_of_regd, GFP_KERNEL);
5123 if (!rd)
5124 return -ENOMEM;
5125
5126 rd->n_reg_rules = num_rules;
5127 rd->alpha2[0] = alpha2[0];
5128 rd->alpha2[1] = alpha2[1];
5129
5130 /*
5131 * Disable DFS master mode if the DFS region was
5132 * not supported or known on this kernel.
5133 */
5134 if (reg_supported_dfs_region(dfs_region))
5135 rd->dfs_region = dfs_region;
5136
5137 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5138 rem_reg_rules) {
5139 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5140 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5141 reg_rule_policy);
5142 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5143 if (r)
5144 goto bad_reg;
5145
5146 rule_idx++;
5147
5148 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5149 r = -EINVAL;
5150 goto bad_reg;
5151 }
5152 }
5153
5154 r = set_regdom(rd);
5155 /* set_regdom took ownership */
5156 rd = NULL;
5157
5158 bad_reg:
5159 kfree(rd);
5160 return r;
5161 }
5162
5163 static int validate_scan_freqs(struct nlattr *freqs)
5164 {
5165 struct nlattr *attr1, *attr2;
5166 int n_channels = 0, tmp1, tmp2;
5167
5168 nla_for_each_nested(attr1, freqs, tmp1) {
5169 n_channels++;
5170 /*
5171 * Some hardware has a limited channel list for
5172 * scanning, and it is pretty much nonsensical
5173 * to scan for a channel twice, so disallow that
5174 * and don't require drivers to check that the
5175 * channel list they get isn't longer than what
5176 * they can scan, as long as they can scan all
5177 * the channels they registered at once.
5178 */
5179 nla_for_each_nested(attr2, freqs, tmp2)
5180 if (attr1 != attr2 &&
5181 nla_get_u32(attr1) == nla_get_u32(attr2))
5182 return 0;
5183 }
5184
5185 return n_channels;
5186 }
5187
5188 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5189 {
5190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5191 struct wireless_dev *wdev = info->user_ptr[1];
5192 struct cfg80211_scan_request *request;
5193 struct nlattr *attr;
5194 struct wiphy *wiphy;
5195 int err, tmp, n_ssids = 0, n_channels, i;
5196 size_t ie_len;
5197
5198 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5199 return -EINVAL;
5200
5201 wiphy = &rdev->wiphy;
5202
5203 if (!rdev->ops->scan)
5204 return -EOPNOTSUPP;
5205
5206 if (rdev->scan_req) {
5207 err = -EBUSY;
5208 goto unlock;
5209 }
5210
5211 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5212 n_channels = validate_scan_freqs(
5213 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5214 if (!n_channels) {
5215 err = -EINVAL;
5216 goto unlock;
5217 }
5218 } else {
5219 enum ieee80211_band band;
5220 n_channels = 0;
5221
5222 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5223 if (wiphy->bands[band])
5224 n_channels += wiphy->bands[band]->n_channels;
5225 }
5226
5227 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5228 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5229 n_ssids++;
5230
5231 if (n_ssids > wiphy->max_scan_ssids) {
5232 err = -EINVAL;
5233 goto unlock;
5234 }
5235
5236 if (info->attrs[NL80211_ATTR_IE])
5237 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5238 else
5239 ie_len = 0;
5240
5241 if (ie_len > wiphy->max_scan_ie_len) {
5242 err = -EINVAL;
5243 goto unlock;
5244 }
5245
5246 request = kzalloc(sizeof(*request)
5247 + sizeof(*request->ssids) * n_ssids
5248 + sizeof(*request->channels) * n_channels
5249 + ie_len, GFP_KERNEL);
5250 if (!request) {
5251 err = -ENOMEM;
5252 goto unlock;
5253 }
5254
5255 if (n_ssids)
5256 request->ssids = (void *)&request->channels[n_channels];
5257 request->n_ssids = n_ssids;
5258 if (ie_len) {
5259 if (request->ssids)
5260 request->ie = (void *)(request->ssids + n_ssids);
5261 else
5262 request->ie = (void *)(request->channels + n_channels);
5263 }
5264
5265 i = 0;
5266 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5267 /* user specified, bail out if channel not found */
5268 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5269 struct ieee80211_channel *chan;
5270
5271 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5272
5273 if (!chan) {
5274 err = -EINVAL;
5275 goto out_free;
5276 }
5277
5278 /* ignore disabled channels */
5279 if (chan->flags & IEEE80211_CHAN_DISABLED)
5280 continue;
5281
5282 request->channels[i] = chan;
5283 i++;
5284 }
5285 } else {
5286 enum ieee80211_band band;
5287
5288 /* all channels */
5289 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5290 int j;
5291 if (!wiphy->bands[band])
5292 continue;
5293 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5294 struct ieee80211_channel *chan;
5295
5296 chan = &wiphy->bands[band]->channels[j];
5297
5298 if (chan->flags & IEEE80211_CHAN_DISABLED)
5299 continue;
5300
5301 request->channels[i] = chan;
5302 i++;
5303 }
5304 }
5305 }
5306
5307 if (!i) {
5308 err = -EINVAL;
5309 goto out_free;
5310 }
5311
5312 request->n_channels = i;
5313
5314 i = 0;
5315 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5316 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5317 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5318 err = -EINVAL;
5319 goto out_free;
5320 }
5321 request->ssids[i].ssid_len = nla_len(attr);
5322 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5323 i++;
5324 }
5325 }
5326
5327 if (info->attrs[NL80211_ATTR_IE]) {
5328 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5329 memcpy((void *)request->ie,
5330 nla_data(info->attrs[NL80211_ATTR_IE]),
5331 request->ie_len);
5332 }
5333
5334 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5335 if (wiphy->bands[i])
5336 request->rates[i] =
5337 (1 << wiphy->bands[i]->n_bitrates) - 1;
5338
5339 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5340 nla_for_each_nested(attr,
5341 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5342 tmp) {
5343 enum ieee80211_band band = nla_type(attr);
5344
5345 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5346 err = -EINVAL;
5347 goto out_free;
5348 }
5349 err = ieee80211_get_ratemask(wiphy->bands[band],
5350 nla_data(attr),
5351 nla_len(attr),
5352 &request->rates[band]);
5353 if (err)
5354 goto out_free;
5355 }
5356 }
5357
5358 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5359 request->flags = nla_get_u32(
5360 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5361 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5362 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5363 err = -EOPNOTSUPP;
5364 goto out_free;
5365 }
5366 }
5367
5368 request->no_cck =
5369 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5370
5371 request->wdev = wdev;
5372 request->wiphy = &rdev->wiphy;
5373 request->scan_start = jiffies;
5374
5375 rdev->scan_req = request;
5376 err = rdev_scan(rdev, request);
5377
5378 if (!err) {
5379 nl80211_send_scan_start(rdev, wdev);
5380 if (wdev->netdev)
5381 dev_hold(wdev->netdev);
5382 } else {
5383 out_free:
5384 rdev->scan_req = NULL;
5385 kfree(request);
5386 }
5387
5388 unlock:
5389 return err;
5390 }
5391
5392 static int nl80211_start_sched_scan(struct sk_buff *skb,
5393 struct genl_info *info)
5394 {
5395 struct cfg80211_sched_scan_request *request;
5396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5397 struct net_device *dev = info->user_ptr[1];
5398 struct nlattr *attr;
5399 struct wiphy *wiphy;
5400 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5401 u32 interval;
5402 enum ieee80211_band band;
5403 size_t ie_len;
5404 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5405
5406 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5407 !rdev->ops->sched_scan_start)
5408 return -EOPNOTSUPP;
5409
5410 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5411 return -EINVAL;
5412
5413 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5414 return -EINVAL;
5415
5416 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5417 if (interval == 0)
5418 return -EINVAL;
5419
5420 wiphy = &rdev->wiphy;
5421
5422 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5423 n_channels = validate_scan_freqs(
5424 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5425 if (!n_channels)
5426 return -EINVAL;
5427 } else {
5428 n_channels = 0;
5429
5430 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5431 if (wiphy->bands[band])
5432 n_channels += wiphy->bands[band]->n_channels;
5433 }
5434
5435 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5436 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5437 tmp)
5438 n_ssids++;
5439
5440 if (n_ssids > wiphy->max_sched_scan_ssids)
5441 return -EINVAL;
5442
5443 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5444 nla_for_each_nested(attr,
5445 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5446 tmp)
5447 n_match_sets++;
5448
5449 if (n_match_sets > wiphy->max_match_sets)
5450 return -EINVAL;
5451
5452 if (info->attrs[NL80211_ATTR_IE])
5453 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5454 else
5455 ie_len = 0;
5456
5457 if (ie_len > wiphy->max_sched_scan_ie_len)
5458 return -EINVAL;
5459
5460 if (rdev->sched_scan_req) {
5461 err = -EINPROGRESS;
5462 goto out;
5463 }
5464
5465 request = kzalloc(sizeof(*request)
5466 + sizeof(*request->ssids) * n_ssids
5467 + sizeof(*request->match_sets) * n_match_sets
5468 + sizeof(*request->channels) * n_channels
5469 + ie_len, GFP_KERNEL);
5470 if (!request) {
5471 err = -ENOMEM;
5472 goto out;
5473 }
5474
5475 if (n_ssids)
5476 request->ssids = (void *)&request->channels[n_channels];
5477 request->n_ssids = n_ssids;
5478 if (ie_len) {
5479 if (request->ssids)
5480 request->ie = (void *)(request->ssids + n_ssids);
5481 else
5482 request->ie = (void *)(request->channels + n_channels);
5483 }
5484
5485 if (n_match_sets) {
5486 if (request->ie)
5487 request->match_sets = (void *)(request->ie + ie_len);
5488 else if (request->ssids)
5489 request->match_sets =
5490 (void *)(request->ssids + n_ssids);
5491 else
5492 request->match_sets =
5493 (void *)(request->channels + n_channels);
5494 }
5495 request->n_match_sets = n_match_sets;
5496
5497 i = 0;
5498 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5499 /* user specified, bail out if channel not found */
5500 nla_for_each_nested(attr,
5501 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5502 tmp) {
5503 struct ieee80211_channel *chan;
5504
5505 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5506
5507 if (!chan) {
5508 err = -EINVAL;
5509 goto out_free;
5510 }
5511
5512 /* ignore disabled channels */
5513 if (chan->flags & IEEE80211_CHAN_DISABLED)
5514 continue;
5515
5516 request->channels[i] = chan;
5517 i++;
5518 }
5519 } else {
5520 /* all channels */
5521 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5522 int j;
5523 if (!wiphy->bands[band])
5524 continue;
5525 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5526 struct ieee80211_channel *chan;
5527
5528 chan = &wiphy->bands[band]->channels[j];
5529
5530 if (chan->flags & IEEE80211_CHAN_DISABLED)
5531 continue;
5532
5533 request->channels[i] = chan;
5534 i++;
5535 }
5536 }
5537 }
5538
5539 if (!i) {
5540 err = -EINVAL;
5541 goto out_free;
5542 }
5543
5544 request->n_channels = i;
5545
5546 i = 0;
5547 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5548 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5549 tmp) {
5550 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5551 err = -EINVAL;
5552 goto out_free;
5553 }
5554 request->ssids[i].ssid_len = nla_len(attr);
5555 memcpy(request->ssids[i].ssid, nla_data(attr),
5556 nla_len(attr));
5557 i++;
5558 }
5559 }
5560
5561 i = 0;
5562 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5563 nla_for_each_nested(attr,
5564 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5565 tmp) {
5566 struct nlattr *ssid, *rssi;
5567
5568 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5569 nla_data(attr), nla_len(attr),
5570 nl80211_match_policy);
5571 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5572 if (ssid) {
5573 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5574 err = -EINVAL;
5575 goto out_free;
5576 }
5577 memcpy(request->match_sets[i].ssid.ssid,
5578 nla_data(ssid), nla_len(ssid));
5579 request->match_sets[i].ssid.ssid_len =
5580 nla_len(ssid);
5581 }
5582 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5583 if (rssi)
5584 request->rssi_thold = nla_get_u32(rssi);
5585 else
5586 request->rssi_thold =
5587 NL80211_SCAN_RSSI_THOLD_OFF;
5588 i++;
5589 }
5590 }
5591
5592 if (info->attrs[NL80211_ATTR_IE]) {
5593 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5594 memcpy((void *)request->ie,
5595 nla_data(info->attrs[NL80211_ATTR_IE]),
5596 request->ie_len);
5597 }
5598
5599 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5600 request->flags = nla_get_u32(
5601 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5602 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5603 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5604 err = -EOPNOTSUPP;
5605 goto out_free;
5606 }
5607 }
5608
5609 request->dev = dev;
5610 request->wiphy = &rdev->wiphy;
5611 request->interval = interval;
5612 request->scan_start = jiffies;
5613
5614 err = rdev_sched_scan_start(rdev, dev, request);
5615 if (!err) {
5616 rdev->sched_scan_req = request;
5617 nl80211_send_sched_scan(rdev, dev,
5618 NL80211_CMD_START_SCHED_SCAN);
5619 goto out;
5620 }
5621
5622 out_free:
5623 kfree(request);
5624 out:
5625 return err;
5626 }
5627
5628 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5629 struct genl_info *info)
5630 {
5631 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5632
5633 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5634 !rdev->ops->sched_scan_stop)
5635 return -EOPNOTSUPP;
5636
5637 return __cfg80211_stop_sched_scan(rdev, false);
5638 }
5639
5640 static int nl80211_start_radar_detection(struct sk_buff *skb,
5641 struct genl_info *info)
5642 {
5643 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5644 struct net_device *dev = info->user_ptr[1];
5645 struct wireless_dev *wdev = dev->ieee80211_ptr;
5646 struct cfg80211_chan_def chandef;
5647 int err;
5648
5649 err = nl80211_parse_chandef(rdev, info, &chandef);
5650 if (err)
5651 return err;
5652
5653 if (netif_carrier_ok(dev))
5654 return -EBUSY;
5655
5656 if (wdev->cac_started)
5657 return -EBUSY;
5658
5659 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5660 if (err < 0)
5661 return err;
5662
5663 if (err == 0)
5664 return -EINVAL;
5665
5666 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5667 return -EINVAL;
5668
5669 if (!rdev->ops->start_radar_detection)
5670 return -EOPNOTSUPP;
5671
5672 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5673 chandef.chan, CHAN_MODE_SHARED,
5674 BIT(chandef.width));
5675 if (err)
5676 return err;
5677
5678 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5679 if (!err) {
5680 wdev->channel = chandef.chan;
5681 wdev->cac_started = true;
5682 wdev->cac_start_time = jiffies;
5683 }
5684 return err;
5685 }
5686
5687 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5688 {
5689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5690 struct net_device *dev = info->user_ptr[1];
5691 struct wireless_dev *wdev = dev->ieee80211_ptr;
5692 struct cfg80211_csa_settings params;
5693 /* csa_attrs is defined static to avoid waste of stack size - this
5694 * function is called under RTNL lock, so this should not be a problem.
5695 */
5696 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5697 u8 radar_detect_width = 0;
5698 int err;
5699 bool need_new_beacon = false;
5700
5701 if (!rdev->ops->channel_switch ||
5702 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5703 return -EOPNOTSUPP;
5704
5705 switch (dev->ieee80211_ptr->iftype) {
5706 case NL80211_IFTYPE_AP:
5707 case NL80211_IFTYPE_P2P_GO:
5708 need_new_beacon = true;
5709
5710 /* useless if AP is not running */
5711 if (!wdev->beacon_interval)
5712 return -EINVAL;
5713 break;
5714 case NL80211_IFTYPE_ADHOC:
5715 case NL80211_IFTYPE_MESH_POINT:
5716 break;
5717 default:
5718 return -EOPNOTSUPP;
5719 }
5720
5721 memset(&params, 0, sizeof(params));
5722
5723 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5724 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5725 return -EINVAL;
5726
5727 /* only important for AP, IBSS and mesh create IEs internally */
5728 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5729 return -EINVAL;
5730
5731 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5732
5733 if (!need_new_beacon)
5734 goto skip_beacons;
5735
5736 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5737 if (err)
5738 return err;
5739
5740 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5741 info->attrs[NL80211_ATTR_CSA_IES],
5742 nl80211_policy);
5743 if (err)
5744 return err;
5745
5746 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5747 if (err)
5748 return err;
5749
5750 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5751 return -EINVAL;
5752
5753 params.counter_offset_beacon =
5754 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5755 if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5756 return -EINVAL;
5757
5758 /* sanity check - counters should be the same */
5759 if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5760 params.count)
5761 return -EINVAL;
5762
5763 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5764 params.counter_offset_presp =
5765 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5766 if (params.counter_offset_presp >=
5767 params.beacon_csa.probe_resp_len)
5768 return -EINVAL;
5769
5770 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5771 params.count)
5772 return -EINVAL;
5773 }
5774
5775 skip_beacons:
5776 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5777 if (err)
5778 return err;
5779
5780 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5781 return -EINVAL;
5782
5783 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5784 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5785 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5786 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5787 &params.chandef);
5788 if (err < 0) {
5789 return err;
5790 } else if (err) {
5791 radar_detect_width = BIT(params.chandef.width);
5792 params.radar_required = true;
5793 }
5794 }
5795
5796 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5797 params.chandef.chan,
5798 CHAN_MODE_SHARED,
5799 radar_detect_width);
5800 if (err)
5801 return err;
5802
5803 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5804 params.block_tx = true;
5805
5806 wdev_lock(wdev);
5807 err = rdev_channel_switch(rdev, dev, &params);
5808 wdev_unlock(wdev);
5809
5810 return err;
5811 }
5812
5813 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5814 u32 seq, int flags,
5815 struct cfg80211_registered_device *rdev,
5816 struct wireless_dev *wdev,
5817 struct cfg80211_internal_bss *intbss)
5818 {
5819 struct cfg80211_bss *res = &intbss->pub;
5820 const struct cfg80211_bss_ies *ies;
5821 void *hdr;
5822 struct nlattr *bss;
5823 bool tsf = false;
5824
5825 ASSERT_WDEV_LOCK(wdev);
5826
5827 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5828 NL80211_CMD_NEW_SCAN_RESULTS);
5829 if (!hdr)
5830 return -1;
5831
5832 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5833
5834 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5835 goto nla_put_failure;
5836 if (wdev->netdev &&
5837 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5838 goto nla_put_failure;
5839 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5840 goto nla_put_failure;
5841
5842 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5843 if (!bss)
5844 goto nla_put_failure;
5845 if ((!is_zero_ether_addr(res->bssid) &&
5846 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5847 goto nla_put_failure;
5848
5849 rcu_read_lock();
5850 ies = rcu_dereference(res->ies);
5851 if (ies) {
5852 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5853 goto fail_unlock_rcu;
5854 tsf = true;
5855 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5856 ies->len, ies->data))
5857 goto fail_unlock_rcu;
5858 }
5859 ies = rcu_dereference(res->beacon_ies);
5860 if (ies) {
5861 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5862 goto fail_unlock_rcu;
5863 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5864 ies->len, ies->data))
5865 goto fail_unlock_rcu;
5866 }
5867 rcu_read_unlock();
5868
5869 if (res->beacon_interval &&
5870 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5871 goto nla_put_failure;
5872 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5873 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5874 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5875 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5876 jiffies_to_msecs(jiffies - intbss->ts)))
5877 goto nla_put_failure;
5878
5879 switch (rdev->wiphy.signal_type) {
5880 case CFG80211_SIGNAL_TYPE_MBM:
5881 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5882 goto nla_put_failure;
5883 break;
5884 case CFG80211_SIGNAL_TYPE_UNSPEC:
5885 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5886 goto nla_put_failure;
5887 break;
5888 default:
5889 break;
5890 }
5891
5892 switch (wdev->iftype) {
5893 case NL80211_IFTYPE_P2P_CLIENT:
5894 case NL80211_IFTYPE_STATION:
5895 if (intbss == wdev->current_bss &&
5896 nla_put_u32(msg, NL80211_BSS_STATUS,
5897 NL80211_BSS_STATUS_ASSOCIATED))
5898 goto nla_put_failure;
5899 break;
5900 case NL80211_IFTYPE_ADHOC:
5901 if (intbss == wdev->current_bss &&
5902 nla_put_u32(msg, NL80211_BSS_STATUS,
5903 NL80211_BSS_STATUS_IBSS_JOINED))
5904 goto nla_put_failure;
5905 break;
5906 default:
5907 break;
5908 }
5909
5910 nla_nest_end(msg, bss);
5911
5912 return genlmsg_end(msg, hdr);
5913
5914 fail_unlock_rcu:
5915 rcu_read_unlock();
5916 nla_put_failure:
5917 genlmsg_cancel(msg, hdr);
5918 return -EMSGSIZE;
5919 }
5920
5921 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5922 {
5923 struct cfg80211_registered_device *rdev;
5924 struct cfg80211_internal_bss *scan;
5925 struct wireless_dev *wdev;
5926 int start = cb->args[2], idx = 0;
5927 int err;
5928
5929 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5930 if (err)
5931 return err;
5932
5933 wdev_lock(wdev);
5934 spin_lock_bh(&rdev->bss_lock);
5935 cfg80211_bss_expire(rdev);
5936
5937 cb->seq = rdev->bss_generation;
5938
5939 list_for_each_entry(scan, &rdev->bss_list, list) {
5940 if (++idx <= start)
5941 continue;
5942 if (nl80211_send_bss(skb, cb,
5943 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5944 rdev, wdev, scan) < 0) {
5945 idx--;
5946 break;
5947 }
5948 }
5949
5950 spin_unlock_bh(&rdev->bss_lock);
5951 wdev_unlock(wdev);
5952
5953 cb->args[2] = idx;
5954 nl80211_finish_wdev_dump(rdev);
5955
5956 return skb->len;
5957 }
5958
5959 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5960 int flags, struct net_device *dev,
5961 struct survey_info *survey)
5962 {
5963 void *hdr;
5964 struct nlattr *infoattr;
5965
5966 hdr = nl80211hdr_put(msg, portid, seq, flags,
5967 NL80211_CMD_NEW_SURVEY_RESULTS);
5968 if (!hdr)
5969 return -ENOMEM;
5970
5971 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5972 goto nla_put_failure;
5973
5974 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5975 if (!infoattr)
5976 goto nla_put_failure;
5977
5978 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5979 survey->channel->center_freq))
5980 goto nla_put_failure;
5981
5982 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5983 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5984 goto nla_put_failure;
5985 if ((survey->filled & SURVEY_INFO_IN_USE) &&
5986 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5987 goto nla_put_failure;
5988 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5989 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5990 survey->channel_time))
5991 goto nla_put_failure;
5992 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5993 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5994 survey->channel_time_busy))
5995 goto nla_put_failure;
5996 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5997 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5998 survey->channel_time_ext_busy))
5999 goto nla_put_failure;
6000 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6001 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6002 survey->channel_time_rx))
6003 goto nla_put_failure;
6004 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6005 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6006 survey->channel_time_tx))
6007 goto nla_put_failure;
6008
6009 nla_nest_end(msg, infoattr);
6010
6011 return genlmsg_end(msg, hdr);
6012
6013 nla_put_failure:
6014 genlmsg_cancel(msg, hdr);
6015 return -EMSGSIZE;
6016 }
6017
6018 static int nl80211_dump_survey(struct sk_buff *skb,
6019 struct netlink_callback *cb)
6020 {
6021 struct survey_info survey;
6022 struct cfg80211_registered_device *dev;
6023 struct wireless_dev *wdev;
6024 int survey_idx = cb->args[2];
6025 int res;
6026
6027 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6028 if (res)
6029 return res;
6030
6031 if (!wdev->netdev) {
6032 res = -EINVAL;
6033 goto out_err;
6034 }
6035
6036 if (!dev->ops->dump_survey) {
6037 res = -EOPNOTSUPP;
6038 goto out_err;
6039 }
6040
6041 while (1) {
6042 struct ieee80211_channel *chan;
6043
6044 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6045 if (res == -ENOENT)
6046 break;
6047 if (res)
6048 goto out_err;
6049
6050 /* Survey without a channel doesn't make sense */
6051 if (!survey.channel) {
6052 res = -EINVAL;
6053 goto out;
6054 }
6055
6056 chan = ieee80211_get_channel(&dev->wiphy,
6057 survey.channel->center_freq);
6058 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6059 survey_idx++;
6060 continue;
6061 }
6062
6063 if (nl80211_send_survey(skb,
6064 NETLINK_CB(cb->skb).portid,
6065 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6066 wdev->netdev, &survey) < 0)
6067 goto out;
6068 survey_idx++;
6069 }
6070
6071 out:
6072 cb->args[2] = survey_idx;
6073 res = skb->len;
6074 out_err:
6075 nl80211_finish_wdev_dump(dev);
6076 return res;
6077 }
6078
6079 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6080 {
6081 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6082 NL80211_WPA_VERSION_2));
6083 }
6084
6085 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6086 {
6087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6088 struct net_device *dev = info->user_ptr[1];
6089 struct ieee80211_channel *chan;
6090 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6091 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6092 enum nl80211_auth_type auth_type;
6093 struct key_parse key;
6094 bool local_state_change;
6095
6096 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6097 return -EINVAL;
6098
6099 if (!info->attrs[NL80211_ATTR_MAC])
6100 return -EINVAL;
6101
6102 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6103 return -EINVAL;
6104
6105 if (!info->attrs[NL80211_ATTR_SSID])
6106 return -EINVAL;
6107
6108 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6109 return -EINVAL;
6110
6111 err = nl80211_parse_key(info, &key);
6112 if (err)
6113 return err;
6114
6115 if (key.idx >= 0) {
6116 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6117 return -EINVAL;
6118 if (!key.p.key || !key.p.key_len)
6119 return -EINVAL;
6120 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6121 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6122 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6123 key.p.key_len != WLAN_KEY_LEN_WEP104))
6124 return -EINVAL;
6125 if (key.idx > 4)
6126 return -EINVAL;
6127 } else {
6128 key.p.key_len = 0;
6129 key.p.key = NULL;
6130 }
6131
6132 if (key.idx >= 0) {
6133 int i;
6134 bool ok = false;
6135 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6136 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6137 ok = true;
6138 break;
6139 }
6140 }
6141 if (!ok)
6142 return -EINVAL;
6143 }
6144
6145 if (!rdev->ops->auth)
6146 return -EOPNOTSUPP;
6147
6148 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6149 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6150 return -EOPNOTSUPP;
6151
6152 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6153 chan = ieee80211_get_channel(&rdev->wiphy,
6154 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6155 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6156 return -EINVAL;
6157
6158 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6159 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6160
6161 if (info->attrs[NL80211_ATTR_IE]) {
6162 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6163 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6164 }
6165
6166 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6167 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6168 return -EINVAL;
6169
6170 if (auth_type == NL80211_AUTHTYPE_SAE &&
6171 !info->attrs[NL80211_ATTR_SAE_DATA])
6172 return -EINVAL;
6173
6174 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6175 if (auth_type != NL80211_AUTHTYPE_SAE)
6176 return -EINVAL;
6177 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6178 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6179 /* need to include at least Auth Transaction and Status Code */
6180 if (sae_data_len < 4)
6181 return -EINVAL;
6182 }
6183
6184 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6185
6186 /*
6187 * Since we no longer track auth state, ignore
6188 * requests to only change local state.
6189 */
6190 if (local_state_change)
6191 return 0;
6192
6193 wdev_lock(dev->ieee80211_ptr);
6194 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6195 ssid, ssid_len, ie, ie_len,
6196 key.p.key, key.p.key_len, key.idx,
6197 sae_data, sae_data_len);
6198 wdev_unlock(dev->ieee80211_ptr);
6199 return err;
6200 }
6201
6202 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6203 struct genl_info *info,
6204 struct cfg80211_crypto_settings *settings,
6205 int cipher_limit)
6206 {
6207 memset(settings, 0, sizeof(*settings));
6208
6209 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6210
6211 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6212 u16 proto;
6213 proto = nla_get_u16(
6214 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6215 settings->control_port_ethertype = cpu_to_be16(proto);
6216 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6217 proto != ETH_P_PAE)
6218 return -EINVAL;
6219 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6220 settings->control_port_no_encrypt = true;
6221 } else
6222 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6223
6224 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6225 void *data;
6226 int len, i;
6227
6228 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6229 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6230 settings->n_ciphers_pairwise = len / sizeof(u32);
6231
6232 if (len % sizeof(u32))
6233 return -EINVAL;
6234
6235 if (settings->n_ciphers_pairwise > cipher_limit)
6236 return -EINVAL;
6237
6238 memcpy(settings->ciphers_pairwise, data, len);
6239
6240 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6241 if (!cfg80211_supported_cipher_suite(
6242 &rdev->wiphy,
6243 settings->ciphers_pairwise[i]))
6244 return -EINVAL;
6245 }
6246
6247 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6248 settings->cipher_group =
6249 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6250 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6251 settings->cipher_group))
6252 return -EINVAL;
6253 }
6254
6255 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6256 settings->wpa_versions =
6257 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6258 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6259 return -EINVAL;
6260 }
6261
6262 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6263 void *data;
6264 int len;
6265
6266 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6267 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6268 settings->n_akm_suites = len / sizeof(u32);
6269
6270 if (len % sizeof(u32))
6271 return -EINVAL;
6272
6273 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6274 return -EINVAL;
6275
6276 memcpy(settings->akm_suites, data, len);
6277 }
6278
6279 return 0;
6280 }
6281
6282 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6283 {
6284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6285 struct net_device *dev = info->user_ptr[1];
6286 struct ieee80211_channel *chan;
6287 struct cfg80211_assoc_request req = {};
6288 const u8 *bssid, *ssid;
6289 int err, ssid_len = 0;
6290
6291 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6292 return -EINVAL;
6293
6294 if (!info->attrs[NL80211_ATTR_MAC] ||
6295 !info->attrs[NL80211_ATTR_SSID] ||
6296 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6297 return -EINVAL;
6298
6299 if (!rdev->ops->assoc)
6300 return -EOPNOTSUPP;
6301
6302 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6303 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6304 return -EOPNOTSUPP;
6305
6306 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6307
6308 chan = ieee80211_get_channel(&rdev->wiphy,
6309 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6310 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6311 return -EINVAL;
6312
6313 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6314 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6315
6316 if (info->attrs[NL80211_ATTR_IE]) {
6317 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6318 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6319 }
6320
6321 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6322 enum nl80211_mfp mfp =
6323 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6324 if (mfp == NL80211_MFP_REQUIRED)
6325 req.use_mfp = true;
6326 else if (mfp != NL80211_MFP_NO)
6327 return -EINVAL;
6328 }
6329
6330 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6331 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6332
6333 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6334 req.flags |= ASSOC_REQ_DISABLE_HT;
6335
6336 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6337 memcpy(&req.ht_capa_mask,
6338 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6339 sizeof(req.ht_capa_mask));
6340
6341 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6342 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6343 return -EINVAL;
6344 memcpy(&req.ht_capa,
6345 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6346 sizeof(req.ht_capa));
6347 }
6348
6349 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6350 req.flags |= ASSOC_REQ_DISABLE_VHT;
6351
6352 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6353 memcpy(&req.vht_capa_mask,
6354 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6355 sizeof(req.vht_capa_mask));
6356
6357 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6358 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6359 return -EINVAL;
6360 memcpy(&req.vht_capa,
6361 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6362 sizeof(req.vht_capa));
6363 }
6364
6365 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6366 if (!err) {
6367 wdev_lock(dev->ieee80211_ptr);
6368 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6369 ssid, ssid_len, &req);
6370 wdev_unlock(dev->ieee80211_ptr);
6371 }
6372
6373 return err;
6374 }
6375
6376 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6377 {
6378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6379 struct net_device *dev = info->user_ptr[1];
6380 const u8 *ie = NULL, *bssid;
6381 int ie_len = 0, err;
6382 u16 reason_code;
6383 bool local_state_change;
6384
6385 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6386 return -EINVAL;
6387
6388 if (!info->attrs[NL80211_ATTR_MAC])
6389 return -EINVAL;
6390
6391 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6392 return -EINVAL;
6393
6394 if (!rdev->ops->deauth)
6395 return -EOPNOTSUPP;
6396
6397 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6398 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6399 return -EOPNOTSUPP;
6400
6401 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6402
6403 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6404 if (reason_code == 0) {
6405 /* Reason Code 0 is reserved */
6406 return -EINVAL;
6407 }
6408
6409 if (info->attrs[NL80211_ATTR_IE]) {
6410 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6411 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6412 }
6413
6414 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6415
6416 wdev_lock(dev->ieee80211_ptr);
6417 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6418 local_state_change);
6419 wdev_unlock(dev->ieee80211_ptr);
6420 return err;
6421 }
6422
6423 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6424 {
6425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6426 struct net_device *dev = info->user_ptr[1];
6427 const u8 *ie = NULL, *bssid;
6428 int ie_len = 0, err;
6429 u16 reason_code;
6430 bool local_state_change;
6431
6432 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6433 return -EINVAL;
6434
6435 if (!info->attrs[NL80211_ATTR_MAC])
6436 return -EINVAL;
6437
6438 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6439 return -EINVAL;
6440
6441 if (!rdev->ops->disassoc)
6442 return -EOPNOTSUPP;
6443
6444 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6445 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6446 return -EOPNOTSUPP;
6447
6448 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6449
6450 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6451 if (reason_code == 0) {
6452 /* Reason Code 0 is reserved */
6453 return -EINVAL;
6454 }
6455
6456 if (info->attrs[NL80211_ATTR_IE]) {
6457 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6458 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6459 }
6460
6461 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6462
6463 wdev_lock(dev->ieee80211_ptr);
6464 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6465 local_state_change);
6466 wdev_unlock(dev->ieee80211_ptr);
6467 return err;
6468 }
6469
6470 static bool
6471 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6472 int mcast_rate[IEEE80211_NUM_BANDS],
6473 int rateval)
6474 {
6475 struct wiphy *wiphy = &rdev->wiphy;
6476 bool found = false;
6477 int band, i;
6478
6479 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6480 struct ieee80211_supported_band *sband;
6481
6482 sband = wiphy->bands[band];
6483 if (!sband)
6484 continue;
6485
6486 for (i = 0; i < sband->n_bitrates; i++) {
6487 if (sband->bitrates[i].bitrate == rateval) {
6488 mcast_rate[band] = i + 1;
6489 found = true;
6490 break;
6491 }
6492 }
6493 }
6494
6495 return found;
6496 }
6497
6498 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6499 {
6500 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6501 struct net_device *dev = info->user_ptr[1];
6502 struct cfg80211_ibss_params ibss;
6503 struct wiphy *wiphy;
6504 struct cfg80211_cached_keys *connkeys = NULL;
6505 int err;
6506
6507 memset(&ibss, 0, sizeof(ibss));
6508
6509 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6510 return -EINVAL;
6511
6512 if (!info->attrs[NL80211_ATTR_SSID] ||
6513 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6514 return -EINVAL;
6515
6516 ibss.beacon_interval = 100;
6517
6518 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6519 ibss.beacon_interval =
6520 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6521 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6522 return -EINVAL;
6523 }
6524
6525 if (!rdev->ops->join_ibss)
6526 return -EOPNOTSUPP;
6527
6528 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6529 return -EOPNOTSUPP;
6530
6531 wiphy = &rdev->wiphy;
6532
6533 if (info->attrs[NL80211_ATTR_MAC]) {
6534 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6535
6536 if (!is_valid_ether_addr(ibss.bssid))
6537 return -EINVAL;
6538 }
6539 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6540 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6541
6542 if (info->attrs[NL80211_ATTR_IE]) {
6543 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6544 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6545 }
6546
6547 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6548 if (err)
6549 return err;
6550
6551 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6552 return -EINVAL;
6553
6554 switch (ibss.chandef.width) {
6555 case NL80211_CHAN_WIDTH_5:
6556 case NL80211_CHAN_WIDTH_10:
6557 case NL80211_CHAN_WIDTH_20_NOHT:
6558 break;
6559 case NL80211_CHAN_WIDTH_20:
6560 case NL80211_CHAN_WIDTH_40:
6561 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6562 break;
6563 default:
6564 return -EINVAL;
6565 }
6566
6567 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6568 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6569
6570 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6571 u8 *rates =
6572 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6573 int n_rates =
6574 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6575 struct ieee80211_supported_band *sband =
6576 wiphy->bands[ibss.chandef.chan->band];
6577
6578 err = ieee80211_get_ratemask(sband, rates, n_rates,
6579 &ibss.basic_rates);
6580 if (err)
6581 return err;
6582 }
6583
6584 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6585 memcpy(&ibss.ht_capa_mask,
6586 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6587 sizeof(ibss.ht_capa_mask));
6588
6589 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6590 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6591 return -EINVAL;
6592 memcpy(&ibss.ht_capa,
6593 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6594 sizeof(ibss.ht_capa));
6595 }
6596
6597 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6598 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6599 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6600 return -EINVAL;
6601
6602 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6603 bool no_ht = false;
6604
6605 connkeys = nl80211_parse_connkeys(rdev,
6606 info->attrs[NL80211_ATTR_KEYS],
6607 &no_ht);
6608 if (IS_ERR(connkeys))
6609 return PTR_ERR(connkeys);
6610
6611 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6612 no_ht) {
6613 kfree(connkeys);
6614 return -EINVAL;
6615 }
6616 }
6617
6618 ibss.control_port =
6619 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6620
6621 ibss.userspace_handles_dfs =
6622 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6623
6624 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6625 if (err)
6626 kfree(connkeys);
6627 return err;
6628 }
6629
6630 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6631 {
6632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6633 struct net_device *dev = info->user_ptr[1];
6634
6635 if (!rdev->ops->leave_ibss)
6636 return -EOPNOTSUPP;
6637
6638 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6639 return -EOPNOTSUPP;
6640
6641 return cfg80211_leave_ibss(rdev, dev, false);
6642 }
6643
6644 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6645 {
6646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6647 struct net_device *dev = info->user_ptr[1];
6648 int mcast_rate[IEEE80211_NUM_BANDS];
6649 u32 nla_rate;
6650 int err;
6651
6652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6653 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6654 return -EOPNOTSUPP;
6655
6656 if (!rdev->ops->set_mcast_rate)
6657 return -EOPNOTSUPP;
6658
6659 memset(mcast_rate, 0, sizeof(mcast_rate));
6660
6661 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6662 return -EINVAL;
6663
6664 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6665 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6666 return -EINVAL;
6667
6668 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6669
6670 return err;
6671 }
6672
6673
6674 #ifdef CONFIG_NL80211_TESTMODE
6675 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6676 .name = "testmode",
6677 };
6678
6679 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6680 {
6681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6682 struct wireless_dev *wdev =
6683 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6684 int err;
6685
6686 if (!rdev->ops->testmode_cmd)
6687 return -EOPNOTSUPP;
6688
6689 if (IS_ERR(wdev)) {
6690 err = PTR_ERR(wdev);
6691 if (err != -EINVAL)
6692 return err;
6693 wdev = NULL;
6694 } else if (wdev->wiphy != &rdev->wiphy) {
6695 return -EINVAL;
6696 }
6697
6698 if (!info->attrs[NL80211_ATTR_TESTDATA])
6699 return -EINVAL;
6700
6701 rdev->testmode_info = info;
6702 err = rdev_testmode_cmd(rdev, wdev,
6703 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6704 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6705 rdev->testmode_info = NULL;
6706
6707 return err;
6708 }
6709
6710 static int nl80211_testmode_dump(struct sk_buff *skb,
6711 struct netlink_callback *cb)
6712 {
6713 struct cfg80211_registered_device *rdev;
6714 int err;
6715 long phy_idx;
6716 void *data = NULL;
6717 int data_len = 0;
6718
6719 rtnl_lock();
6720
6721 if (cb->args[0]) {
6722 /*
6723 * 0 is a valid index, but not valid for args[0],
6724 * so we need to offset by 1.
6725 */
6726 phy_idx = cb->args[0] - 1;
6727 } else {
6728 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6729 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6730 nl80211_policy);
6731 if (err)
6732 goto out_err;
6733
6734 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6735 nl80211_fam.attrbuf);
6736 if (IS_ERR(rdev)) {
6737 err = PTR_ERR(rdev);
6738 goto out_err;
6739 }
6740 phy_idx = rdev->wiphy_idx;
6741 rdev = NULL;
6742
6743 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6744 cb->args[1] =
6745 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6746 }
6747
6748 if (cb->args[1]) {
6749 data = nla_data((void *)cb->args[1]);
6750 data_len = nla_len((void *)cb->args[1]);
6751 }
6752
6753 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6754 if (!rdev) {
6755 err = -ENOENT;
6756 goto out_err;
6757 }
6758
6759 if (!rdev->ops->testmode_dump) {
6760 err = -EOPNOTSUPP;
6761 goto out_err;
6762 }
6763
6764 while (1) {
6765 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6766 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6767 NL80211_CMD_TESTMODE);
6768 struct nlattr *tmdata;
6769
6770 if (!hdr)
6771 break;
6772
6773 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6774 genlmsg_cancel(skb, hdr);
6775 break;
6776 }
6777
6778 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6779 if (!tmdata) {
6780 genlmsg_cancel(skb, hdr);
6781 break;
6782 }
6783 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6784 nla_nest_end(skb, tmdata);
6785
6786 if (err == -ENOBUFS || err == -ENOENT) {
6787 genlmsg_cancel(skb, hdr);
6788 break;
6789 } else if (err) {
6790 genlmsg_cancel(skb, hdr);
6791 goto out_err;
6792 }
6793
6794 genlmsg_end(skb, hdr);
6795 }
6796
6797 err = skb->len;
6798 /* see above */
6799 cb->args[0] = phy_idx + 1;
6800 out_err:
6801 rtnl_unlock();
6802 return err;
6803 }
6804
6805 static struct sk_buff *
6806 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6807 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6808 {
6809 struct sk_buff *skb;
6810 void *hdr;
6811 struct nlattr *data;
6812
6813 skb = nlmsg_new(approxlen + 100, gfp);
6814 if (!skb)
6815 return NULL;
6816
6817 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6818 if (!hdr) {
6819 kfree_skb(skb);
6820 return NULL;
6821 }
6822
6823 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6824 goto nla_put_failure;
6825 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6826
6827 ((void **)skb->cb)[0] = rdev;
6828 ((void **)skb->cb)[1] = hdr;
6829 ((void **)skb->cb)[2] = data;
6830
6831 return skb;
6832
6833 nla_put_failure:
6834 kfree_skb(skb);
6835 return NULL;
6836 }
6837
6838 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6839 int approxlen)
6840 {
6841 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6842
6843 if (WARN_ON(!rdev->testmode_info))
6844 return NULL;
6845
6846 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6847 rdev->testmode_info->snd_portid,
6848 rdev->testmode_info->snd_seq,
6849 GFP_KERNEL);
6850 }
6851 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6852
6853 int cfg80211_testmode_reply(struct sk_buff *skb)
6854 {
6855 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6856 void *hdr = ((void **)skb->cb)[1];
6857 struct nlattr *data = ((void **)skb->cb)[2];
6858
6859 if (WARN_ON(!rdev->testmode_info)) {
6860 kfree_skb(skb);
6861 return -EINVAL;
6862 }
6863
6864 nla_nest_end(skb, data);
6865 genlmsg_end(skb, hdr);
6866 return genlmsg_reply(skb, rdev->testmode_info);
6867 }
6868 EXPORT_SYMBOL(cfg80211_testmode_reply);
6869
6870 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6871 int approxlen, gfp_t gfp)
6872 {
6873 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6874
6875 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6876 }
6877 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6878
6879 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6880 {
6881 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6882 void *hdr = ((void **)skb->cb)[1];
6883 struct nlattr *data = ((void **)skb->cb)[2];
6884
6885 nla_nest_end(skb, data);
6886 genlmsg_end(skb, hdr);
6887 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6888 nl80211_testmode_mcgrp.id, gfp);
6889 }
6890 EXPORT_SYMBOL(cfg80211_testmode_event);
6891 #endif
6892
6893 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6894 {
6895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6896 struct net_device *dev = info->user_ptr[1];
6897 struct cfg80211_connect_params connect;
6898 struct wiphy *wiphy;
6899 struct cfg80211_cached_keys *connkeys = NULL;
6900 int err;
6901
6902 memset(&connect, 0, sizeof(connect));
6903
6904 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6905 return -EINVAL;
6906
6907 if (!info->attrs[NL80211_ATTR_SSID] ||
6908 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6909 return -EINVAL;
6910
6911 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6912 connect.auth_type =
6913 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6914 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6915 NL80211_CMD_CONNECT))
6916 return -EINVAL;
6917 } else
6918 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6919
6920 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6921
6922 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6923 NL80211_MAX_NR_CIPHER_SUITES);
6924 if (err)
6925 return err;
6926
6927 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6928 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6929 return -EOPNOTSUPP;
6930
6931 wiphy = &rdev->wiphy;
6932
6933 connect.bg_scan_period = -1;
6934 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6935 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6936 connect.bg_scan_period =
6937 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6938 }
6939
6940 if (info->attrs[NL80211_ATTR_MAC])
6941 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6942 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6943 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6944
6945 if (info->attrs[NL80211_ATTR_IE]) {
6946 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6947 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6948 }
6949
6950 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6951 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6952 if (connect.mfp != NL80211_MFP_REQUIRED &&
6953 connect.mfp != NL80211_MFP_NO)
6954 return -EINVAL;
6955 } else {
6956 connect.mfp = NL80211_MFP_NO;
6957 }
6958
6959 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6960 connect.channel =
6961 ieee80211_get_channel(wiphy,
6962 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6963 if (!connect.channel ||
6964 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6965 return -EINVAL;
6966 }
6967
6968 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6969 connkeys = nl80211_parse_connkeys(rdev,
6970 info->attrs[NL80211_ATTR_KEYS], NULL);
6971 if (IS_ERR(connkeys))
6972 return PTR_ERR(connkeys);
6973 }
6974
6975 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6976 connect.flags |= ASSOC_REQ_DISABLE_HT;
6977
6978 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6979 memcpy(&connect.ht_capa_mask,
6980 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6981 sizeof(connect.ht_capa_mask));
6982
6983 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6984 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6985 kfree(connkeys);
6986 return -EINVAL;
6987 }
6988 memcpy(&connect.ht_capa,
6989 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6990 sizeof(connect.ht_capa));
6991 }
6992
6993 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6994 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6995
6996 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6997 memcpy(&connect.vht_capa_mask,
6998 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6999 sizeof(connect.vht_capa_mask));
7000
7001 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7002 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7003 kfree(connkeys);
7004 return -EINVAL;
7005 }
7006 memcpy(&connect.vht_capa,
7007 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7008 sizeof(connect.vht_capa));
7009 }
7010
7011 wdev_lock(dev->ieee80211_ptr);
7012 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7013 wdev_unlock(dev->ieee80211_ptr);
7014 if (err)
7015 kfree(connkeys);
7016 return err;
7017 }
7018
7019 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7020 {
7021 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7022 struct net_device *dev = info->user_ptr[1];
7023 u16 reason;
7024 int ret;
7025
7026 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7027 reason = WLAN_REASON_DEAUTH_LEAVING;
7028 else
7029 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7030
7031 if (reason == 0)
7032 return -EINVAL;
7033
7034 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7035 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7036 return -EOPNOTSUPP;
7037
7038 wdev_lock(dev->ieee80211_ptr);
7039 ret = cfg80211_disconnect(rdev, dev, reason, true);
7040 wdev_unlock(dev->ieee80211_ptr);
7041 return ret;
7042 }
7043
7044 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7045 {
7046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7047 struct net *net;
7048 int err;
7049 u32 pid;
7050
7051 if (!info->attrs[NL80211_ATTR_PID])
7052 return -EINVAL;
7053
7054 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7055
7056 net = get_net_ns_by_pid(pid);
7057 if (IS_ERR(net))
7058 return PTR_ERR(net);
7059
7060 err = 0;
7061
7062 /* check if anything to do */
7063 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7064 err = cfg80211_switch_netns(rdev, net);
7065
7066 put_net(net);
7067 return err;
7068 }
7069
7070 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7071 {
7072 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7073 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7074 struct cfg80211_pmksa *pmksa) = NULL;
7075 struct net_device *dev = info->user_ptr[1];
7076 struct cfg80211_pmksa pmksa;
7077
7078 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7079
7080 if (!info->attrs[NL80211_ATTR_MAC])
7081 return -EINVAL;
7082
7083 if (!info->attrs[NL80211_ATTR_PMKID])
7084 return -EINVAL;
7085
7086 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7087 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7088
7089 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7090 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7091 return -EOPNOTSUPP;
7092
7093 switch (info->genlhdr->cmd) {
7094 case NL80211_CMD_SET_PMKSA:
7095 rdev_ops = rdev->ops->set_pmksa;
7096 break;
7097 case NL80211_CMD_DEL_PMKSA:
7098 rdev_ops = rdev->ops->del_pmksa;
7099 break;
7100 default:
7101 WARN_ON(1);
7102 break;
7103 }
7104
7105 if (!rdev_ops)
7106 return -EOPNOTSUPP;
7107
7108 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7109 }
7110
7111 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7112 {
7113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7114 struct net_device *dev = info->user_ptr[1];
7115
7116 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7117 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7118 return -EOPNOTSUPP;
7119
7120 if (!rdev->ops->flush_pmksa)
7121 return -EOPNOTSUPP;
7122
7123 return rdev_flush_pmksa(rdev, dev);
7124 }
7125
7126 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7127 {
7128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7129 struct net_device *dev = info->user_ptr[1];
7130 u8 action_code, dialog_token;
7131 u16 status_code;
7132 u8 *peer;
7133
7134 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7135 !rdev->ops->tdls_mgmt)
7136 return -EOPNOTSUPP;
7137
7138 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7139 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7140 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7141 !info->attrs[NL80211_ATTR_IE] ||
7142 !info->attrs[NL80211_ATTR_MAC])
7143 return -EINVAL;
7144
7145 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7146 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7147 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7148 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7149
7150 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7151 dialog_token, status_code,
7152 nla_data(info->attrs[NL80211_ATTR_IE]),
7153 nla_len(info->attrs[NL80211_ATTR_IE]));
7154 }
7155
7156 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7157 {
7158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7159 struct net_device *dev = info->user_ptr[1];
7160 enum nl80211_tdls_operation operation;
7161 u8 *peer;
7162
7163 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7164 !rdev->ops->tdls_oper)
7165 return -EOPNOTSUPP;
7166
7167 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7168 !info->attrs[NL80211_ATTR_MAC])
7169 return -EINVAL;
7170
7171 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7172 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7173
7174 return rdev_tdls_oper(rdev, dev, peer, operation);
7175 }
7176
7177 static int nl80211_remain_on_channel(struct sk_buff *skb,
7178 struct genl_info *info)
7179 {
7180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7181 struct wireless_dev *wdev = info->user_ptr[1];
7182 struct cfg80211_chan_def chandef;
7183 struct sk_buff *msg;
7184 void *hdr;
7185 u64 cookie;
7186 u32 duration;
7187 int err;
7188
7189 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7190 !info->attrs[NL80211_ATTR_DURATION])
7191 return -EINVAL;
7192
7193 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7194
7195 if (!rdev->ops->remain_on_channel ||
7196 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7197 return -EOPNOTSUPP;
7198
7199 /*
7200 * We should be on that channel for at least a minimum amount of
7201 * time (10ms) but no longer than the driver supports.
7202 */
7203 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7204 duration > rdev->wiphy.max_remain_on_channel_duration)
7205 return -EINVAL;
7206
7207 err = nl80211_parse_chandef(rdev, info, &chandef);
7208 if (err)
7209 return err;
7210
7211 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7212 if (!msg)
7213 return -ENOMEM;
7214
7215 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7216 NL80211_CMD_REMAIN_ON_CHANNEL);
7217 if (!hdr) {
7218 err = -ENOBUFS;
7219 goto free_msg;
7220 }
7221
7222 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7223 duration, &cookie);
7224
7225 if (err)
7226 goto free_msg;
7227
7228 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7229 goto nla_put_failure;
7230
7231 genlmsg_end(msg, hdr);
7232
7233 return genlmsg_reply(msg, info);
7234
7235 nla_put_failure:
7236 err = -ENOBUFS;
7237 free_msg:
7238 nlmsg_free(msg);
7239 return err;
7240 }
7241
7242 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7243 struct genl_info *info)
7244 {
7245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7246 struct wireless_dev *wdev = info->user_ptr[1];
7247 u64 cookie;
7248
7249 if (!info->attrs[NL80211_ATTR_COOKIE])
7250 return -EINVAL;
7251
7252 if (!rdev->ops->cancel_remain_on_channel)
7253 return -EOPNOTSUPP;
7254
7255 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7256
7257 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7258 }
7259
7260 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7261 u8 *rates, u8 rates_len)
7262 {
7263 u8 i;
7264 u32 mask = 0;
7265
7266 for (i = 0; i < rates_len; i++) {
7267 int rate = (rates[i] & 0x7f) * 5;
7268 int ridx;
7269 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7270 struct ieee80211_rate *srate =
7271 &sband->bitrates[ridx];
7272 if (rate == srate->bitrate) {
7273 mask |= 1 << ridx;
7274 break;
7275 }
7276 }
7277 if (ridx == sband->n_bitrates)
7278 return 0; /* rate not found */
7279 }
7280
7281 return mask;
7282 }
7283
7284 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7285 u8 *rates, u8 rates_len,
7286 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7287 {
7288 u8 i;
7289
7290 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7291
7292 for (i = 0; i < rates_len; i++) {
7293 int ridx, rbit;
7294
7295 ridx = rates[i] / 8;
7296 rbit = BIT(rates[i] % 8);
7297
7298 /* check validity */
7299 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7300 return false;
7301
7302 /* check availability */
7303 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7304 mcs[ridx] |= rbit;
7305 else
7306 return false;
7307 }
7308
7309 return true;
7310 }
7311
7312 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7313 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7314 .len = NL80211_MAX_SUPP_RATES },
7315 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7316 .len = NL80211_MAX_SUPP_HT_RATES },
7317 };
7318
7319 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7320 struct genl_info *info)
7321 {
7322 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7324 struct cfg80211_bitrate_mask mask;
7325 int rem, i;
7326 struct net_device *dev = info->user_ptr[1];
7327 struct nlattr *tx_rates;
7328 struct ieee80211_supported_band *sband;
7329
7330 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7331 return -EINVAL;
7332
7333 if (!rdev->ops->set_bitrate_mask)
7334 return -EOPNOTSUPP;
7335
7336 memset(&mask, 0, sizeof(mask));
7337 /* Default to all rates enabled */
7338 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7339 sband = rdev->wiphy.bands[i];
7340 mask.control[i].legacy =
7341 sband ? (1 << sband->n_bitrates) - 1 : 0;
7342 if (sband)
7343 memcpy(mask.control[i].mcs,
7344 sband->ht_cap.mcs.rx_mask,
7345 sizeof(mask.control[i].mcs));
7346 else
7347 memset(mask.control[i].mcs, 0,
7348 sizeof(mask.control[i].mcs));
7349 }
7350
7351 /*
7352 * The nested attribute uses enum nl80211_band as the index. This maps
7353 * directly to the enum ieee80211_band values used in cfg80211.
7354 */
7355 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7356 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7357 {
7358 enum ieee80211_band band = nla_type(tx_rates);
7359 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7360 return -EINVAL;
7361 sband = rdev->wiphy.bands[band];
7362 if (sband == NULL)
7363 return -EINVAL;
7364 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7365 nla_len(tx_rates), nl80211_txattr_policy);
7366 if (tb[NL80211_TXRATE_LEGACY]) {
7367 mask.control[band].legacy = rateset_to_mask(
7368 sband,
7369 nla_data(tb[NL80211_TXRATE_LEGACY]),
7370 nla_len(tb[NL80211_TXRATE_LEGACY]));
7371 if ((mask.control[band].legacy == 0) &&
7372 nla_len(tb[NL80211_TXRATE_LEGACY]))
7373 return -EINVAL;
7374 }
7375 if (tb[NL80211_TXRATE_MCS]) {
7376 if (!ht_rateset_to_mask(
7377 sband,
7378 nla_data(tb[NL80211_TXRATE_MCS]),
7379 nla_len(tb[NL80211_TXRATE_MCS]),
7380 mask.control[band].mcs))
7381 return -EINVAL;
7382 }
7383
7384 if (mask.control[band].legacy == 0) {
7385 /* don't allow empty legacy rates if HT
7386 * is not even supported. */
7387 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7388 return -EINVAL;
7389
7390 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7391 if (mask.control[band].mcs[i])
7392 break;
7393
7394 /* legacy and mcs rates may not be both empty */
7395 if (i == IEEE80211_HT_MCS_MASK_LEN)
7396 return -EINVAL;
7397 }
7398 }
7399
7400 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7401 }
7402
7403 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7404 {
7405 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7406 struct wireless_dev *wdev = info->user_ptr[1];
7407 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7408
7409 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7410 return -EINVAL;
7411
7412 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7413 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7414
7415 switch (wdev->iftype) {
7416 case NL80211_IFTYPE_STATION:
7417 case NL80211_IFTYPE_ADHOC:
7418 case NL80211_IFTYPE_P2P_CLIENT:
7419 case NL80211_IFTYPE_AP:
7420 case NL80211_IFTYPE_AP_VLAN:
7421 case NL80211_IFTYPE_MESH_POINT:
7422 case NL80211_IFTYPE_P2P_GO:
7423 case NL80211_IFTYPE_P2P_DEVICE:
7424 break;
7425 default:
7426 return -EOPNOTSUPP;
7427 }
7428
7429 /* not much point in registering if we can't reply */
7430 if (!rdev->ops->mgmt_tx)
7431 return -EOPNOTSUPP;
7432
7433 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7434 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7435 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7436 }
7437
7438 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7439 {
7440 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7441 struct wireless_dev *wdev = info->user_ptr[1];
7442 struct cfg80211_chan_def chandef;
7443 int err;
7444 void *hdr = NULL;
7445 u64 cookie;
7446 struct sk_buff *msg = NULL;
7447 struct cfg80211_mgmt_tx_params params = {
7448 .dont_wait_for_ack =
7449 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7450 };
7451
7452 if (!info->attrs[NL80211_ATTR_FRAME])
7453 return -EINVAL;
7454
7455 if (!rdev->ops->mgmt_tx)
7456 return -EOPNOTSUPP;
7457
7458 switch (wdev->iftype) {
7459 case NL80211_IFTYPE_P2P_DEVICE:
7460 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7461 return -EINVAL;
7462 case NL80211_IFTYPE_STATION:
7463 case NL80211_IFTYPE_ADHOC:
7464 case NL80211_IFTYPE_P2P_CLIENT:
7465 case NL80211_IFTYPE_AP:
7466 case NL80211_IFTYPE_AP_VLAN:
7467 case NL80211_IFTYPE_MESH_POINT:
7468 case NL80211_IFTYPE_P2P_GO:
7469 break;
7470 default:
7471 return -EOPNOTSUPP;
7472 }
7473
7474 if (info->attrs[NL80211_ATTR_DURATION]) {
7475 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7476 return -EINVAL;
7477 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7478
7479 /*
7480 * We should wait on the channel for at least a minimum amount
7481 * of time (10ms) but no longer than the driver supports.
7482 */
7483 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7484 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7485 return -EINVAL;
7486
7487 }
7488
7489 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7490
7491 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7492 return -EINVAL;
7493
7494 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7495
7496 /* get the channel if any has been specified, otherwise pass NULL to
7497 * the driver. The latter will use the current one
7498 */
7499 chandef.chan = NULL;
7500 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7501 err = nl80211_parse_chandef(rdev, info, &chandef);
7502 if (err)
7503 return err;
7504 }
7505
7506 if (!chandef.chan && params.offchan)
7507 return -EINVAL;
7508
7509 if (!params.dont_wait_for_ack) {
7510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7511 if (!msg)
7512 return -ENOMEM;
7513
7514 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7515 NL80211_CMD_FRAME);
7516 if (!hdr) {
7517 err = -ENOBUFS;
7518 goto free_msg;
7519 }
7520 }
7521
7522 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7523 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7524 params.chan = chandef.chan;
7525 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7526 if (err)
7527 goto free_msg;
7528
7529 if (msg) {
7530 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7531 goto nla_put_failure;
7532
7533 genlmsg_end(msg, hdr);
7534 return genlmsg_reply(msg, info);
7535 }
7536
7537 return 0;
7538
7539 nla_put_failure:
7540 err = -ENOBUFS;
7541 free_msg:
7542 nlmsg_free(msg);
7543 return err;
7544 }
7545
7546 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7547 {
7548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7549 struct wireless_dev *wdev = info->user_ptr[1];
7550 u64 cookie;
7551
7552 if (!info->attrs[NL80211_ATTR_COOKIE])
7553 return -EINVAL;
7554
7555 if (!rdev->ops->mgmt_tx_cancel_wait)
7556 return -EOPNOTSUPP;
7557
7558 switch (wdev->iftype) {
7559 case NL80211_IFTYPE_STATION:
7560 case NL80211_IFTYPE_ADHOC:
7561 case NL80211_IFTYPE_P2P_CLIENT:
7562 case NL80211_IFTYPE_AP:
7563 case NL80211_IFTYPE_AP_VLAN:
7564 case NL80211_IFTYPE_P2P_GO:
7565 case NL80211_IFTYPE_P2P_DEVICE:
7566 break;
7567 default:
7568 return -EOPNOTSUPP;
7569 }
7570
7571 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7572
7573 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7574 }
7575
7576 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7577 {
7578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7579 struct wireless_dev *wdev;
7580 struct net_device *dev = info->user_ptr[1];
7581 u8 ps_state;
7582 bool state;
7583 int err;
7584
7585 if (!info->attrs[NL80211_ATTR_PS_STATE])
7586 return -EINVAL;
7587
7588 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7589
7590 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7591 return -EINVAL;
7592
7593 wdev = dev->ieee80211_ptr;
7594
7595 if (!rdev->ops->set_power_mgmt)
7596 return -EOPNOTSUPP;
7597
7598 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7599
7600 if (state == wdev->ps)
7601 return 0;
7602
7603 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7604 if (!err)
7605 wdev->ps = state;
7606 return err;
7607 }
7608
7609 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7610 {
7611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7612 enum nl80211_ps_state ps_state;
7613 struct wireless_dev *wdev;
7614 struct net_device *dev = info->user_ptr[1];
7615 struct sk_buff *msg;
7616 void *hdr;
7617 int err;
7618
7619 wdev = dev->ieee80211_ptr;
7620
7621 if (!rdev->ops->set_power_mgmt)
7622 return -EOPNOTSUPP;
7623
7624 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7625 if (!msg)
7626 return -ENOMEM;
7627
7628 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7629 NL80211_CMD_GET_POWER_SAVE);
7630 if (!hdr) {
7631 err = -ENOBUFS;
7632 goto free_msg;
7633 }
7634
7635 if (wdev->ps)
7636 ps_state = NL80211_PS_ENABLED;
7637 else
7638 ps_state = NL80211_PS_DISABLED;
7639
7640 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7641 goto nla_put_failure;
7642
7643 genlmsg_end(msg, hdr);
7644 return genlmsg_reply(msg, info);
7645
7646 nla_put_failure:
7647 err = -ENOBUFS;
7648 free_msg:
7649 nlmsg_free(msg);
7650 return err;
7651 }
7652
7653 static struct nla_policy
7654 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7655 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7656 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7657 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7658 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7659 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7660 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7661 };
7662
7663 static int nl80211_set_cqm_txe(struct genl_info *info,
7664 u32 rate, u32 pkts, u32 intvl)
7665 {
7666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7667 struct net_device *dev = info->user_ptr[1];
7668 struct wireless_dev *wdev = dev->ieee80211_ptr;
7669
7670 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7671 return -EINVAL;
7672
7673 if (!rdev->ops->set_cqm_txe_config)
7674 return -EOPNOTSUPP;
7675
7676 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7677 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7678 return -EOPNOTSUPP;
7679
7680 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7681 }
7682
7683 static int nl80211_set_cqm_rssi(struct genl_info *info,
7684 s32 threshold, u32 hysteresis)
7685 {
7686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7687 struct net_device *dev = info->user_ptr[1];
7688 struct wireless_dev *wdev = dev->ieee80211_ptr;
7689
7690 if (threshold > 0)
7691 return -EINVAL;
7692
7693 /* disabling - hysteresis should also be zero then */
7694 if (threshold == 0)
7695 hysteresis = 0;
7696
7697 if (!rdev->ops->set_cqm_rssi_config)
7698 return -EOPNOTSUPP;
7699
7700 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7701 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7702 return -EOPNOTSUPP;
7703
7704 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7705 }
7706
7707 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7708 {
7709 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7710 struct nlattr *cqm;
7711 int err;
7712
7713 cqm = info->attrs[NL80211_ATTR_CQM];
7714 if (!cqm)
7715 return -EINVAL;
7716
7717 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7718 nl80211_attr_cqm_policy);
7719 if (err)
7720 return err;
7721
7722 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7723 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7724 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7725 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7726
7727 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7728 }
7729
7730 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7731 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7732 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7733 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7734 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7735 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7736
7737 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7738 }
7739
7740 return -EINVAL;
7741 }
7742
7743 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7744 {
7745 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7746 struct net_device *dev = info->user_ptr[1];
7747 struct mesh_config cfg;
7748 struct mesh_setup setup;
7749 int err;
7750
7751 /* start with default */
7752 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7753 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7754
7755 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7756 /* and parse parameters if given */
7757 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7758 if (err)
7759 return err;
7760 }
7761
7762 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7763 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7764 return -EINVAL;
7765
7766 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7767 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7768
7769 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7770 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7771 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7772 return -EINVAL;
7773
7774 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7775 setup.beacon_interval =
7776 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7777 if (setup.beacon_interval < 10 ||
7778 setup.beacon_interval > 10000)
7779 return -EINVAL;
7780 }
7781
7782 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7783 setup.dtim_period =
7784 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7785 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7786 return -EINVAL;
7787 }
7788
7789 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7790 /* parse additional setup parameters if given */
7791 err = nl80211_parse_mesh_setup(info, &setup);
7792 if (err)
7793 return err;
7794 }
7795
7796 if (setup.user_mpm)
7797 cfg.auto_open_plinks = false;
7798
7799 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7800 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7801 if (err)
7802 return err;
7803 } else {
7804 /* cfg80211_join_mesh() will sort it out */
7805 setup.chandef.chan = NULL;
7806 }
7807
7808 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7809 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7810 int n_rates =
7811 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7812 struct ieee80211_supported_band *sband;
7813
7814 if (!setup.chandef.chan)
7815 return -EINVAL;
7816
7817 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7818
7819 err = ieee80211_get_ratemask(sband, rates, n_rates,
7820 &setup.basic_rates);
7821 if (err)
7822 return err;
7823 }
7824
7825 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7826 }
7827
7828 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7829 {
7830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7831 struct net_device *dev = info->user_ptr[1];
7832
7833 return cfg80211_leave_mesh(rdev, dev);
7834 }
7835
7836 #ifdef CONFIG_PM
7837 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7838 struct cfg80211_registered_device *rdev)
7839 {
7840 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7841 struct nlattr *nl_pats, *nl_pat;
7842 int i, pat_len;
7843
7844 if (!wowlan->n_patterns)
7845 return 0;
7846
7847 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7848 if (!nl_pats)
7849 return -ENOBUFS;
7850
7851 for (i = 0; i < wowlan->n_patterns; i++) {
7852 nl_pat = nla_nest_start(msg, i + 1);
7853 if (!nl_pat)
7854 return -ENOBUFS;
7855 pat_len = wowlan->patterns[i].pattern_len;
7856 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7857 wowlan->patterns[i].mask) ||
7858 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7859 wowlan->patterns[i].pattern) ||
7860 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7861 wowlan->patterns[i].pkt_offset))
7862 return -ENOBUFS;
7863 nla_nest_end(msg, nl_pat);
7864 }
7865 nla_nest_end(msg, nl_pats);
7866
7867 return 0;
7868 }
7869
7870 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7871 struct cfg80211_wowlan_tcp *tcp)
7872 {
7873 struct nlattr *nl_tcp;
7874
7875 if (!tcp)
7876 return 0;
7877
7878 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7879 if (!nl_tcp)
7880 return -ENOBUFS;
7881
7882 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7883 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7884 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7885 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7886 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7887 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7888 tcp->payload_len, tcp->payload) ||
7889 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7890 tcp->data_interval) ||
7891 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7892 tcp->wake_len, tcp->wake_data) ||
7893 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7894 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7895 return -ENOBUFS;
7896
7897 if (tcp->payload_seq.len &&
7898 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7899 sizeof(tcp->payload_seq), &tcp->payload_seq))
7900 return -ENOBUFS;
7901
7902 if (tcp->payload_tok.len &&
7903 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7904 sizeof(tcp->payload_tok) + tcp->tokens_size,
7905 &tcp->payload_tok))
7906 return -ENOBUFS;
7907
7908 nla_nest_end(msg, nl_tcp);
7909
7910 return 0;
7911 }
7912
7913 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7914 {
7915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7916 struct sk_buff *msg;
7917 void *hdr;
7918 u32 size = NLMSG_DEFAULT_SIZE;
7919
7920 if (!rdev->wiphy.wowlan)
7921 return -EOPNOTSUPP;
7922
7923 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7924 /* adjust size to have room for all the data */
7925 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7926 rdev->wiphy.wowlan_config->tcp->payload_len +
7927 rdev->wiphy.wowlan_config->tcp->wake_len +
7928 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7929 }
7930
7931 msg = nlmsg_new(size, GFP_KERNEL);
7932 if (!msg)
7933 return -ENOMEM;
7934
7935 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7936 NL80211_CMD_GET_WOWLAN);
7937 if (!hdr)
7938 goto nla_put_failure;
7939
7940 if (rdev->wiphy.wowlan_config) {
7941 struct nlattr *nl_wowlan;
7942
7943 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7944 if (!nl_wowlan)
7945 goto nla_put_failure;
7946
7947 if ((rdev->wiphy.wowlan_config->any &&
7948 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7949 (rdev->wiphy.wowlan_config->disconnect &&
7950 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7951 (rdev->wiphy.wowlan_config->magic_pkt &&
7952 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7953 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7954 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7955 (rdev->wiphy.wowlan_config->eap_identity_req &&
7956 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7957 (rdev->wiphy.wowlan_config->four_way_handshake &&
7958 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7959 (rdev->wiphy.wowlan_config->rfkill_release &&
7960 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7961 goto nla_put_failure;
7962
7963 if (nl80211_send_wowlan_patterns(msg, rdev))
7964 goto nla_put_failure;
7965
7966 if (nl80211_send_wowlan_tcp(msg,
7967 rdev->wiphy.wowlan_config->tcp))
7968 goto nla_put_failure;
7969
7970 nla_nest_end(msg, nl_wowlan);
7971 }
7972
7973 genlmsg_end(msg, hdr);
7974 return genlmsg_reply(msg, info);
7975
7976 nla_put_failure:
7977 nlmsg_free(msg);
7978 return -ENOBUFS;
7979 }
7980
7981 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7982 struct nlattr *attr,
7983 struct cfg80211_wowlan *trig)
7984 {
7985 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7986 struct cfg80211_wowlan_tcp *cfg;
7987 struct nl80211_wowlan_tcp_data_token *tok = NULL;
7988 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7989 u32 size;
7990 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7991 int err, port;
7992
7993 if (!rdev->wiphy.wowlan->tcp)
7994 return -EINVAL;
7995
7996 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7997 nla_data(attr), nla_len(attr),
7998 nl80211_wowlan_tcp_policy);
7999 if (err)
8000 return err;
8001
8002 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8003 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8004 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8005 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8006 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8007 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8008 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8009 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8010 return -EINVAL;
8011
8012 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8013 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8014 return -EINVAL;
8015
8016 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8017 rdev->wiphy.wowlan->tcp->data_interval_max ||
8018 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8019 return -EINVAL;
8020
8021 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8022 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8023 return -EINVAL;
8024
8025 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8026 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8027 return -EINVAL;
8028
8029 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8030 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8031
8032 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8033 tokens_size = tokln - sizeof(*tok);
8034
8035 if (!tok->len || tokens_size % tok->len)
8036 return -EINVAL;
8037 if (!rdev->wiphy.wowlan->tcp->tok)
8038 return -EINVAL;
8039 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8040 return -EINVAL;
8041 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8042 return -EINVAL;
8043 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8044 return -EINVAL;
8045 if (tok->offset + tok->len > data_size)
8046 return -EINVAL;
8047 }
8048
8049 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8050 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8051 if (!rdev->wiphy.wowlan->tcp->seq)
8052 return -EINVAL;
8053 if (seq->len == 0 || seq->len > 4)
8054 return -EINVAL;
8055 if (seq->len + seq->offset > data_size)
8056 return -EINVAL;
8057 }
8058
8059 size = sizeof(*cfg);
8060 size += data_size;
8061 size += wake_size + wake_mask_size;
8062 size += tokens_size;
8063
8064 cfg = kzalloc(size, GFP_KERNEL);
8065 if (!cfg)
8066 return -ENOMEM;
8067 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8068 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8069 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8070 ETH_ALEN);
8071 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8072 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8073 else
8074 port = 0;
8075 #ifdef CONFIG_INET
8076 /* allocate a socket and port for it and use it */
8077 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8078 IPPROTO_TCP, &cfg->sock, 1);
8079 if (err) {
8080 kfree(cfg);
8081 return err;
8082 }
8083 if (inet_csk_get_port(cfg->sock->sk, port)) {
8084 sock_release(cfg->sock);
8085 kfree(cfg);
8086 return -EADDRINUSE;
8087 }
8088 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8089 #else
8090 if (!port) {
8091 kfree(cfg);
8092 return -EINVAL;
8093 }
8094 cfg->src_port = port;
8095 #endif
8096
8097 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8098 cfg->payload_len = data_size;
8099 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8100 memcpy((void *)cfg->payload,
8101 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8102 data_size);
8103 if (seq)
8104 cfg->payload_seq = *seq;
8105 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8106 cfg->wake_len = wake_size;
8107 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8108 memcpy((void *)cfg->wake_data,
8109 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8110 wake_size);
8111 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8112 data_size + wake_size;
8113 memcpy((void *)cfg->wake_mask,
8114 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8115 wake_mask_size);
8116 if (tok) {
8117 cfg->tokens_size = tokens_size;
8118 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8119 }
8120
8121 trig->tcp = cfg;
8122
8123 return 0;
8124 }
8125
8126 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8127 {
8128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8129 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8130 struct cfg80211_wowlan new_triggers = {};
8131 struct cfg80211_wowlan *ntrig;
8132 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8133 int err, i;
8134 bool prev_enabled = rdev->wiphy.wowlan_config;
8135
8136 if (!wowlan)
8137 return -EOPNOTSUPP;
8138
8139 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8140 cfg80211_rdev_free_wowlan(rdev);
8141 rdev->wiphy.wowlan_config = NULL;
8142 goto set_wakeup;
8143 }
8144
8145 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8146 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8147 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8148 nl80211_wowlan_policy);
8149 if (err)
8150 return err;
8151
8152 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8153 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8154 return -EINVAL;
8155 new_triggers.any = true;
8156 }
8157
8158 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8159 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8160 return -EINVAL;
8161 new_triggers.disconnect = true;
8162 }
8163
8164 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8165 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8166 return -EINVAL;
8167 new_triggers.magic_pkt = true;
8168 }
8169
8170 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8171 return -EINVAL;
8172
8173 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8174 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8175 return -EINVAL;
8176 new_triggers.gtk_rekey_failure = true;
8177 }
8178
8179 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8180 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8181 return -EINVAL;
8182 new_triggers.eap_identity_req = true;
8183 }
8184
8185 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8186 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8187 return -EINVAL;
8188 new_triggers.four_way_handshake = true;
8189 }
8190
8191 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8192 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8193 return -EINVAL;
8194 new_triggers.rfkill_release = true;
8195 }
8196
8197 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8198 struct nlattr *pat;
8199 int n_patterns = 0;
8200 int rem, pat_len, mask_len, pkt_offset;
8201 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8202
8203 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8204 rem)
8205 n_patterns++;
8206 if (n_patterns > wowlan->n_patterns)
8207 return -EINVAL;
8208
8209 new_triggers.patterns = kcalloc(n_patterns,
8210 sizeof(new_triggers.patterns[0]),
8211 GFP_KERNEL);
8212 if (!new_triggers.patterns)
8213 return -ENOMEM;
8214
8215 new_triggers.n_patterns = n_patterns;
8216 i = 0;
8217
8218 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8219 rem) {
8220 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8221 nla_len(pat), NULL);
8222 err = -EINVAL;
8223 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8224 !pat_tb[NL80211_PKTPAT_PATTERN])
8225 goto error;
8226 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8227 mask_len = DIV_ROUND_UP(pat_len, 8);
8228 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8229 goto error;
8230 if (pat_len > wowlan->pattern_max_len ||
8231 pat_len < wowlan->pattern_min_len)
8232 goto error;
8233
8234 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8235 pkt_offset = 0;
8236 else
8237 pkt_offset = nla_get_u32(
8238 pat_tb[NL80211_PKTPAT_OFFSET]);
8239 if (pkt_offset > wowlan->max_pkt_offset)
8240 goto error;
8241 new_triggers.patterns[i].pkt_offset = pkt_offset;
8242
8243 new_triggers.patterns[i].mask =
8244 kmalloc(mask_len + pat_len, GFP_KERNEL);
8245 if (!new_triggers.patterns[i].mask) {
8246 err = -ENOMEM;
8247 goto error;
8248 }
8249 new_triggers.patterns[i].pattern =
8250 new_triggers.patterns[i].mask + mask_len;
8251 memcpy(new_triggers.patterns[i].mask,
8252 nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8253 mask_len);
8254 new_triggers.patterns[i].pattern_len = pat_len;
8255 memcpy(new_triggers.patterns[i].pattern,
8256 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8257 pat_len);
8258 i++;
8259 }
8260 }
8261
8262 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8263 err = nl80211_parse_wowlan_tcp(
8264 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8265 &new_triggers);
8266 if (err)
8267 goto error;
8268 }
8269
8270 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8271 if (!ntrig) {
8272 err = -ENOMEM;
8273 goto error;
8274 }
8275 cfg80211_rdev_free_wowlan(rdev);
8276 rdev->wiphy.wowlan_config = ntrig;
8277
8278 set_wakeup:
8279 if (rdev->ops->set_wakeup &&
8280 prev_enabled != !!rdev->wiphy.wowlan_config)
8281 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8282
8283 return 0;
8284 error:
8285 for (i = 0; i < new_triggers.n_patterns; i++)
8286 kfree(new_triggers.patterns[i].mask);
8287 kfree(new_triggers.patterns);
8288 if (new_triggers.tcp && new_triggers.tcp->sock)
8289 sock_release(new_triggers.tcp->sock);
8290 kfree(new_triggers.tcp);
8291 return err;
8292 }
8293 #endif
8294
8295 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8296 struct cfg80211_registered_device *rdev)
8297 {
8298 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8299 int i, j, pat_len;
8300 struct cfg80211_coalesce_rules *rule;
8301
8302 if (!rdev->coalesce->n_rules)
8303 return 0;
8304
8305 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8306 if (!nl_rules)
8307 return -ENOBUFS;
8308
8309 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8310 nl_rule = nla_nest_start(msg, i + 1);
8311 if (!nl_rule)
8312 return -ENOBUFS;
8313
8314 rule = &rdev->coalesce->rules[i];
8315 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8316 rule->delay))
8317 return -ENOBUFS;
8318
8319 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8320 rule->condition))
8321 return -ENOBUFS;
8322
8323 nl_pats = nla_nest_start(msg,
8324 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8325 if (!nl_pats)
8326 return -ENOBUFS;
8327
8328 for (j = 0; j < rule->n_patterns; j++) {
8329 nl_pat = nla_nest_start(msg, j + 1);
8330 if (!nl_pat)
8331 return -ENOBUFS;
8332 pat_len = rule->patterns[j].pattern_len;
8333 if (nla_put(msg, NL80211_PKTPAT_MASK,
8334 DIV_ROUND_UP(pat_len, 8),
8335 rule->patterns[j].mask) ||
8336 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8337 rule->patterns[j].pattern) ||
8338 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8339 rule->patterns[j].pkt_offset))
8340 return -ENOBUFS;
8341 nla_nest_end(msg, nl_pat);
8342 }
8343 nla_nest_end(msg, nl_pats);
8344 nla_nest_end(msg, nl_rule);
8345 }
8346 nla_nest_end(msg, nl_rules);
8347
8348 return 0;
8349 }
8350
8351 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8352 {
8353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8354 struct sk_buff *msg;
8355 void *hdr;
8356
8357 if (!rdev->wiphy.coalesce)
8358 return -EOPNOTSUPP;
8359
8360 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8361 if (!msg)
8362 return -ENOMEM;
8363
8364 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8365 NL80211_CMD_GET_COALESCE);
8366 if (!hdr)
8367 goto nla_put_failure;
8368
8369 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8370 goto nla_put_failure;
8371
8372 genlmsg_end(msg, hdr);
8373 return genlmsg_reply(msg, info);
8374
8375 nla_put_failure:
8376 nlmsg_free(msg);
8377 return -ENOBUFS;
8378 }
8379
8380 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8381 {
8382 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8383 int i, j;
8384 struct cfg80211_coalesce_rules *rule;
8385
8386 if (!coalesce)
8387 return;
8388
8389 for (i = 0; i < coalesce->n_rules; i++) {
8390 rule = &coalesce->rules[i];
8391 for (j = 0; j < rule->n_patterns; j++)
8392 kfree(rule->patterns[j].mask);
8393 kfree(rule->patterns);
8394 }
8395 kfree(coalesce->rules);
8396 kfree(coalesce);
8397 rdev->coalesce = NULL;
8398 }
8399
8400 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8401 struct nlattr *rule,
8402 struct cfg80211_coalesce_rules *new_rule)
8403 {
8404 int err, i;
8405 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8406 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8407 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8408 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8409
8410 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8411 nla_len(rule), nl80211_coalesce_policy);
8412 if (err)
8413 return err;
8414
8415 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8416 new_rule->delay =
8417 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8418 if (new_rule->delay > coalesce->max_delay)
8419 return -EINVAL;
8420
8421 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8422 new_rule->condition =
8423 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8424 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8425 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8426 return -EINVAL;
8427
8428 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8429 return -EINVAL;
8430
8431 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8432 rem)
8433 n_patterns++;
8434 if (n_patterns > coalesce->n_patterns)
8435 return -EINVAL;
8436
8437 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8438 GFP_KERNEL);
8439 if (!new_rule->patterns)
8440 return -ENOMEM;
8441
8442 new_rule->n_patterns = n_patterns;
8443 i = 0;
8444
8445 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8446 rem) {
8447 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8448 nla_len(pat), NULL);
8449 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8450 !pat_tb[NL80211_PKTPAT_PATTERN])
8451 return -EINVAL;
8452 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8453 mask_len = DIV_ROUND_UP(pat_len, 8);
8454 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8455 return -EINVAL;
8456 if (pat_len > coalesce->pattern_max_len ||
8457 pat_len < coalesce->pattern_min_len)
8458 return -EINVAL;
8459
8460 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8461 pkt_offset = 0;
8462 else
8463 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8464 if (pkt_offset > coalesce->max_pkt_offset)
8465 return -EINVAL;
8466 new_rule->patterns[i].pkt_offset = pkt_offset;
8467
8468 new_rule->patterns[i].mask =
8469 kmalloc(mask_len + pat_len, GFP_KERNEL);
8470 if (!new_rule->patterns[i].mask)
8471 return -ENOMEM;
8472 new_rule->patterns[i].pattern =
8473 new_rule->patterns[i].mask + mask_len;
8474 memcpy(new_rule->patterns[i].mask,
8475 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8476 new_rule->patterns[i].pattern_len = pat_len;
8477 memcpy(new_rule->patterns[i].pattern,
8478 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8479 i++;
8480 }
8481
8482 return 0;
8483 }
8484
8485 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8486 {
8487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8488 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8489 struct cfg80211_coalesce new_coalesce = {};
8490 struct cfg80211_coalesce *n_coalesce;
8491 int err, rem_rule, n_rules = 0, i, j;
8492 struct nlattr *rule;
8493 struct cfg80211_coalesce_rules *tmp_rule;
8494
8495 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8496 return -EOPNOTSUPP;
8497
8498 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8499 cfg80211_rdev_free_coalesce(rdev);
8500 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8501 return 0;
8502 }
8503
8504 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8505 rem_rule)
8506 n_rules++;
8507 if (n_rules > coalesce->n_rules)
8508 return -EINVAL;
8509
8510 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8511 GFP_KERNEL);
8512 if (!new_coalesce.rules)
8513 return -ENOMEM;
8514
8515 new_coalesce.n_rules = n_rules;
8516 i = 0;
8517
8518 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8519 rem_rule) {
8520 err = nl80211_parse_coalesce_rule(rdev, rule,
8521 &new_coalesce.rules[i]);
8522 if (err)
8523 goto error;
8524
8525 i++;
8526 }
8527
8528 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8529 if (err)
8530 goto error;
8531
8532 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8533 if (!n_coalesce) {
8534 err = -ENOMEM;
8535 goto error;
8536 }
8537 cfg80211_rdev_free_coalesce(rdev);
8538 rdev->coalesce = n_coalesce;
8539
8540 return 0;
8541 error:
8542 for (i = 0; i < new_coalesce.n_rules; i++) {
8543 tmp_rule = &new_coalesce.rules[i];
8544 for (j = 0; j < tmp_rule->n_patterns; j++)
8545 kfree(tmp_rule->patterns[j].mask);
8546 kfree(tmp_rule->patterns);
8547 }
8548 kfree(new_coalesce.rules);
8549
8550 return err;
8551 }
8552
8553 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8554 {
8555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8556 struct net_device *dev = info->user_ptr[1];
8557 struct wireless_dev *wdev = dev->ieee80211_ptr;
8558 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8559 struct cfg80211_gtk_rekey_data rekey_data;
8560 int err;
8561
8562 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8563 return -EINVAL;
8564
8565 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8566 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8567 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8568 nl80211_rekey_policy);
8569 if (err)
8570 return err;
8571
8572 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8573 return -ERANGE;
8574 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8575 return -ERANGE;
8576 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8577 return -ERANGE;
8578
8579 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8580 NL80211_KEK_LEN);
8581 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8582 NL80211_KCK_LEN);
8583 memcpy(rekey_data.replay_ctr,
8584 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8585 NL80211_REPLAY_CTR_LEN);
8586
8587 wdev_lock(wdev);
8588 if (!wdev->current_bss) {
8589 err = -ENOTCONN;
8590 goto out;
8591 }
8592
8593 if (!rdev->ops->set_rekey_data) {
8594 err = -EOPNOTSUPP;
8595 goto out;
8596 }
8597
8598 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8599 out:
8600 wdev_unlock(wdev);
8601 return err;
8602 }
8603
8604 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8605 struct genl_info *info)
8606 {
8607 struct net_device *dev = info->user_ptr[1];
8608 struct wireless_dev *wdev = dev->ieee80211_ptr;
8609
8610 if (wdev->iftype != NL80211_IFTYPE_AP &&
8611 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8612 return -EINVAL;
8613
8614 if (wdev->ap_unexpected_nlportid)
8615 return -EBUSY;
8616
8617 wdev->ap_unexpected_nlportid = info->snd_portid;
8618 return 0;
8619 }
8620
8621 static int nl80211_probe_client(struct sk_buff *skb,
8622 struct genl_info *info)
8623 {
8624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8625 struct net_device *dev = info->user_ptr[1];
8626 struct wireless_dev *wdev = dev->ieee80211_ptr;
8627 struct sk_buff *msg;
8628 void *hdr;
8629 const u8 *addr;
8630 u64 cookie;
8631 int err;
8632
8633 if (wdev->iftype != NL80211_IFTYPE_AP &&
8634 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8635 return -EOPNOTSUPP;
8636
8637 if (!info->attrs[NL80211_ATTR_MAC])
8638 return -EINVAL;
8639
8640 if (!rdev->ops->probe_client)
8641 return -EOPNOTSUPP;
8642
8643 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8644 if (!msg)
8645 return -ENOMEM;
8646
8647 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8648 NL80211_CMD_PROBE_CLIENT);
8649 if (!hdr) {
8650 err = -ENOBUFS;
8651 goto free_msg;
8652 }
8653
8654 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8655
8656 err = rdev_probe_client(rdev, dev, addr, &cookie);
8657 if (err)
8658 goto free_msg;
8659
8660 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8661 goto nla_put_failure;
8662
8663 genlmsg_end(msg, hdr);
8664
8665 return genlmsg_reply(msg, info);
8666
8667 nla_put_failure:
8668 err = -ENOBUFS;
8669 free_msg:
8670 nlmsg_free(msg);
8671 return err;
8672 }
8673
8674 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8675 {
8676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8677 struct cfg80211_beacon_registration *reg, *nreg;
8678 int rv;
8679
8680 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8681 return -EOPNOTSUPP;
8682
8683 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8684 if (!nreg)
8685 return -ENOMEM;
8686
8687 /* First, check if already registered. */
8688 spin_lock_bh(&rdev->beacon_registrations_lock);
8689 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8690 if (reg->nlportid == info->snd_portid) {
8691 rv = -EALREADY;
8692 goto out_err;
8693 }
8694 }
8695 /* Add it to the list */
8696 nreg->nlportid = info->snd_portid;
8697 list_add(&nreg->list, &rdev->beacon_registrations);
8698
8699 spin_unlock_bh(&rdev->beacon_registrations_lock);
8700
8701 return 0;
8702 out_err:
8703 spin_unlock_bh(&rdev->beacon_registrations_lock);
8704 kfree(nreg);
8705 return rv;
8706 }
8707
8708 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8709 {
8710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8711 struct wireless_dev *wdev = info->user_ptr[1];
8712 int err;
8713
8714 if (!rdev->ops->start_p2p_device)
8715 return -EOPNOTSUPP;
8716
8717 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8718 return -EOPNOTSUPP;
8719
8720 if (wdev->p2p_started)
8721 return 0;
8722
8723 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8724 if (err)
8725 return err;
8726
8727 err = rdev_start_p2p_device(rdev, wdev);
8728 if (err)
8729 return err;
8730
8731 wdev->p2p_started = true;
8732 rdev->opencount++;
8733
8734 return 0;
8735 }
8736
8737 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8738 {
8739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8740 struct wireless_dev *wdev = info->user_ptr[1];
8741
8742 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8743 return -EOPNOTSUPP;
8744
8745 if (!rdev->ops->stop_p2p_device)
8746 return -EOPNOTSUPP;
8747
8748 cfg80211_stop_p2p_device(rdev, wdev);
8749
8750 return 0;
8751 }
8752
8753 static int nl80211_get_protocol_features(struct sk_buff *skb,
8754 struct genl_info *info)
8755 {
8756 void *hdr;
8757 struct sk_buff *msg;
8758
8759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8760 if (!msg)
8761 return -ENOMEM;
8762
8763 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8764 NL80211_CMD_GET_PROTOCOL_FEATURES);
8765 if (!hdr)
8766 goto nla_put_failure;
8767
8768 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8769 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8770 goto nla_put_failure;
8771
8772 genlmsg_end(msg, hdr);
8773 return genlmsg_reply(msg, info);
8774
8775 nla_put_failure:
8776 kfree_skb(msg);
8777 return -ENOBUFS;
8778 }
8779
8780 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8781 {
8782 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8783 struct cfg80211_update_ft_ies_params ft_params;
8784 struct net_device *dev = info->user_ptr[1];
8785
8786 if (!rdev->ops->update_ft_ies)
8787 return -EOPNOTSUPP;
8788
8789 if (!info->attrs[NL80211_ATTR_MDID] ||
8790 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8791 return -EINVAL;
8792
8793 memset(&ft_params, 0, sizeof(ft_params));
8794 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8795 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8796 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8797
8798 return rdev_update_ft_ies(rdev, dev, &ft_params);
8799 }
8800
8801 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8802 struct genl_info *info)
8803 {
8804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8805 struct wireless_dev *wdev = info->user_ptr[1];
8806 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8807 u16 duration;
8808 int ret;
8809
8810 if (!rdev->ops->crit_proto_start)
8811 return -EOPNOTSUPP;
8812
8813 if (WARN_ON(!rdev->ops->crit_proto_stop))
8814 return -EINVAL;
8815
8816 if (rdev->crit_proto_nlportid)
8817 return -EBUSY;
8818
8819 /* determine protocol if provided */
8820 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8821 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8822
8823 if (proto >= NUM_NL80211_CRIT_PROTO)
8824 return -EINVAL;
8825
8826 /* timeout must be provided */
8827 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8828 return -EINVAL;
8829
8830 duration =
8831 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8832
8833 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8834 return -ERANGE;
8835
8836 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8837 if (!ret)
8838 rdev->crit_proto_nlportid = info->snd_portid;
8839
8840 return ret;
8841 }
8842
8843 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8844 struct genl_info *info)
8845 {
8846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8847 struct wireless_dev *wdev = info->user_ptr[1];
8848
8849 if (!rdev->ops->crit_proto_stop)
8850 return -EOPNOTSUPP;
8851
8852 if (rdev->crit_proto_nlportid) {
8853 rdev->crit_proto_nlportid = 0;
8854 rdev_crit_proto_stop(rdev, wdev);
8855 }
8856 return 0;
8857 }
8858
8859 #define NL80211_FLAG_NEED_WIPHY 0x01
8860 #define NL80211_FLAG_NEED_NETDEV 0x02
8861 #define NL80211_FLAG_NEED_RTNL 0x04
8862 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8863 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8864 NL80211_FLAG_CHECK_NETDEV_UP)
8865 #define NL80211_FLAG_NEED_WDEV 0x10
8866 /* If a netdev is associated, it must be UP, P2P must be started */
8867 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8868 NL80211_FLAG_CHECK_NETDEV_UP)
8869
8870 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8871 struct genl_info *info)
8872 {
8873 struct cfg80211_registered_device *rdev;
8874 struct wireless_dev *wdev;
8875 struct net_device *dev;
8876 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8877
8878 if (rtnl)
8879 rtnl_lock();
8880
8881 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8882 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8883 if (IS_ERR(rdev)) {
8884 if (rtnl)
8885 rtnl_unlock();
8886 return PTR_ERR(rdev);
8887 }
8888 info->user_ptr[0] = rdev;
8889 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8890 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8891 ASSERT_RTNL();
8892
8893 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8894 info->attrs);
8895 if (IS_ERR(wdev)) {
8896 if (rtnl)
8897 rtnl_unlock();
8898 return PTR_ERR(wdev);
8899 }
8900
8901 dev = wdev->netdev;
8902 rdev = wiphy_to_dev(wdev->wiphy);
8903
8904 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8905 if (!dev) {
8906 if (rtnl)
8907 rtnl_unlock();
8908 return -EINVAL;
8909 }
8910
8911 info->user_ptr[1] = dev;
8912 } else {
8913 info->user_ptr[1] = wdev;
8914 }
8915
8916 if (dev) {
8917 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8918 !netif_running(dev)) {
8919 if (rtnl)
8920 rtnl_unlock();
8921 return -ENETDOWN;
8922 }
8923
8924 dev_hold(dev);
8925 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8926 if (!wdev->p2p_started) {
8927 if (rtnl)
8928 rtnl_unlock();
8929 return -ENETDOWN;
8930 }
8931 }
8932
8933 info->user_ptr[0] = rdev;
8934 }
8935
8936 return 0;
8937 }
8938
8939 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8940 struct genl_info *info)
8941 {
8942 if (info->user_ptr[1]) {
8943 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8944 struct wireless_dev *wdev = info->user_ptr[1];
8945
8946 if (wdev->netdev)
8947 dev_put(wdev->netdev);
8948 } else {
8949 dev_put(info->user_ptr[1]);
8950 }
8951 }
8952 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8953 rtnl_unlock();
8954 }
8955
8956 static struct genl_ops nl80211_ops[] = {
8957 {
8958 .cmd = NL80211_CMD_GET_WIPHY,
8959 .doit = nl80211_get_wiphy,
8960 .dumpit = nl80211_dump_wiphy,
8961 .done = nl80211_dump_wiphy_done,
8962 .policy = nl80211_policy,
8963 /* can be retrieved by unprivileged users */
8964 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8965 NL80211_FLAG_NEED_RTNL,
8966 },
8967 {
8968 .cmd = NL80211_CMD_SET_WIPHY,
8969 .doit = nl80211_set_wiphy,
8970 .policy = nl80211_policy,
8971 .flags = GENL_ADMIN_PERM,
8972 .internal_flags = NL80211_FLAG_NEED_RTNL,
8973 },
8974 {
8975 .cmd = NL80211_CMD_GET_INTERFACE,
8976 .doit = nl80211_get_interface,
8977 .dumpit = nl80211_dump_interface,
8978 .policy = nl80211_policy,
8979 /* can be retrieved by unprivileged users */
8980 .internal_flags = NL80211_FLAG_NEED_WDEV |
8981 NL80211_FLAG_NEED_RTNL,
8982 },
8983 {
8984 .cmd = NL80211_CMD_SET_INTERFACE,
8985 .doit = nl80211_set_interface,
8986 .policy = nl80211_policy,
8987 .flags = GENL_ADMIN_PERM,
8988 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8989 NL80211_FLAG_NEED_RTNL,
8990 },
8991 {
8992 .cmd = NL80211_CMD_NEW_INTERFACE,
8993 .doit = nl80211_new_interface,
8994 .policy = nl80211_policy,
8995 .flags = GENL_ADMIN_PERM,
8996 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8997 NL80211_FLAG_NEED_RTNL,
8998 },
8999 {
9000 .cmd = NL80211_CMD_DEL_INTERFACE,
9001 .doit = nl80211_del_interface,
9002 .policy = nl80211_policy,
9003 .flags = GENL_ADMIN_PERM,
9004 .internal_flags = NL80211_FLAG_NEED_WDEV |
9005 NL80211_FLAG_NEED_RTNL,
9006 },
9007 {
9008 .cmd = NL80211_CMD_GET_KEY,
9009 .doit = nl80211_get_key,
9010 .policy = nl80211_policy,
9011 .flags = GENL_ADMIN_PERM,
9012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9013 NL80211_FLAG_NEED_RTNL,
9014 },
9015 {
9016 .cmd = NL80211_CMD_SET_KEY,
9017 .doit = nl80211_set_key,
9018 .policy = nl80211_policy,
9019 .flags = GENL_ADMIN_PERM,
9020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9021 NL80211_FLAG_NEED_RTNL,
9022 },
9023 {
9024 .cmd = NL80211_CMD_NEW_KEY,
9025 .doit = nl80211_new_key,
9026 .policy = nl80211_policy,
9027 .flags = GENL_ADMIN_PERM,
9028 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9029 NL80211_FLAG_NEED_RTNL,
9030 },
9031 {
9032 .cmd = NL80211_CMD_DEL_KEY,
9033 .doit = nl80211_del_key,
9034 .policy = nl80211_policy,
9035 .flags = GENL_ADMIN_PERM,
9036 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9037 NL80211_FLAG_NEED_RTNL,
9038 },
9039 {
9040 .cmd = NL80211_CMD_SET_BEACON,
9041 .policy = nl80211_policy,
9042 .flags = GENL_ADMIN_PERM,
9043 .doit = nl80211_set_beacon,
9044 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9045 NL80211_FLAG_NEED_RTNL,
9046 },
9047 {
9048 .cmd = NL80211_CMD_START_AP,
9049 .policy = nl80211_policy,
9050 .flags = GENL_ADMIN_PERM,
9051 .doit = nl80211_start_ap,
9052 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9053 NL80211_FLAG_NEED_RTNL,
9054 },
9055 {
9056 .cmd = NL80211_CMD_STOP_AP,
9057 .policy = nl80211_policy,
9058 .flags = GENL_ADMIN_PERM,
9059 .doit = nl80211_stop_ap,
9060 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9061 NL80211_FLAG_NEED_RTNL,
9062 },
9063 {
9064 .cmd = NL80211_CMD_GET_STATION,
9065 .doit = nl80211_get_station,
9066 .dumpit = nl80211_dump_station,
9067 .policy = nl80211_policy,
9068 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9069 NL80211_FLAG_NEED_RTNL,
9070 },
9071 {
9072 .cmd = NL80211_CMD_SET_STATION,
9073 .doit = nl80211_set_station,
9074 .policy = nl80211_policy,
9075 .flags = GENL_ADMIN_PERM,
9076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9077 NL80211_FLAG_NEED_RTNL,
9078 },
9079 {
9080 .cmd = NL80211_CMD_NEW_STATION,
9081 .doit = nl80211_new_station,
9082 .policy = nl80211_policy,
9083 .flags = GENL_ADMIN_PERM,
9084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9085 NL80211_FLAG_NEED_RTNL,
9086 },
9087 {
9088 .cmd = NL80211_CMD_DEL_STATION,
9089 .doit = nl80211_del_station,
9090 .policy = nl80211_policy,
9091 .flags = GENL_ADMIN_PERM,
9092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9093 NL80211_FLAG_NEED_RTNL,
9094 },
9095 {
9096 .cmd = NL80211_CMD_GET_MPATH,
9097 .doit = nl80211_get_mpath,
9098 .dumpit = nl80211_dump_mpath,
9099 .policy = nl80211_policy,
9100 .flags = GENL_ADMIN_PERM,
9101 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9102 NL80211_FLAG_NEED_RTNL,
9103 },
9104 {
9105 .cmd = NL80211_CMD_SET_MPATH,
9106 .doit = nl80211_set_mpath,
9107 .policy = nl80211_policy,
9108 .flags = GENL_ADMIN_PERM,
9109 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9110 NL80211_FLAG_NEED_RTNL,
9111 },
9112 {
9113 .cmd = NL80211_CMD_NEW_MPATH,
9114 .doit = nl80211_new_mpath,
9115 .policy = nl80211_policy,
9116 .flags = GENL_ADMIN_PERM,
9117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9118 NL80211_FLAG_NEED_RTNL,
9119 },
9120 {
9121 .cmd = NL80211_CMD_DEL_MPATH,
9122 .doit = nl80211_del_mpath,
9123 .policy = nl80211_policy,
9124 .flags = GENL_ADMIN_PERM,
9125 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9126 NL80211_FLAG_NEED_RTNL,
9127 },
9128 {
9129 .cmd = NL80211_CMD_SET_BSS,
9130 .doit = nl80211_set_bss,
9131 .policy = nl80211_policy,
9132 .flags = GENL_ADMIN_PERM,
9133 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9134 NL80211_FLAG_NEED_RTNL,
9135 },
9136 {
9137 .cmd = NL80211_CMD_GET_REG,
9138 .doit = nl80211_get_reg,
9139 .policy = nl80211_policy,
9140 .internal_flags = NL80211_FLAG_NEED_RTNL,
9141 /* can be retrieved by unprivileged users */
9142 },
9143 {
9144 .cmd = NL80211_CMD_SET_REG,
9145 .doit = nl80211_set_reg,
9146 .policy = nl80211_policy,
9147 .flags = GENL_ADMIN_PERM,
9148 .internal_flags = NL80211_FLAG_NEED_RTNL,
9149 },
9150 {
9151 .cmd = NL80211_CMD_REQ_SET_REG,
9152 .doit = nl80211_req_set_reg,
9153 .policy = nl80211_policy,
9154 .flags = GENL_ADMIN_PERM,
9155 },
9156 {
9157 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9158 .doit = nl80211_get_mesh_config,
9159 .policy = nl80211_policy,
9160 /* can be retrieved by unprivileged users */
9161 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9162 NL80211_FLAG_NEED_RTNL,
9163 },
9164 {
9165 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9166 .doit = nl80211_update_mesh_config,
9167 .policy = nl80211_policy,
9168 .flags = GENL_ADMIN_PERM,
9169 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9170 NL80211_FLAG_NEED_RTNL,
9171 },
9172 {
9173 .cmd = NL80211_CMD_TRIGGER_SCAN,
9174 .doit = nl80211_trigger_scan,
9175 .policy = nl80211_policy,
9176 .flags = GENL_ADMIN_PERM,
9177 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9178 NL80211_FLAG_NEED_RTNL,
9179 },
9180 {
9181 .cmd = NL80211_CMD_GET_SCAN,
9182 .policy = nl80211_policy,
9183 .dumpit = nl80211_dump_scan,
9184 },
9185 {
9186 .cmd = NL80211_CMD_START_SCHED_SCAN,
9187 .doit = nl80211_start_sched_scan,
9188 .policy = nl80211_policy,
9189 .flags = GENL_ADMIN_PERM,
9190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9191 NL80211_FLAG_NEED_RTNL,
9192 },
9193 {
9194 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9195 .doit = nl80211_stop_sched_scan,
9196 .policy = nl80211_policy,
9197 .flags = GENL_ADMIN_PERM,
9198 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9199 NL80211_FLAG_NEED_RTNL,
9200 },
9201 {
9202 .cmd = NL80211_CMD_AUTHENTICATE,
9203 .doit = nl80211_authenticate,
9204 .policy = nl80211_policy,
9205 .flags = GENL_ADMIN_PERM,
9206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9207 NL80211_FLAG_NEED_RTNL,
9208 },
9209 {
9210 .cmd = NL80211_CMD_ASSOCIATE,
9211 .doit = nl80211_associate,
9212 .policy = nl80211_policy,
9213 .flags = GENL_ADMIN_PERM,
9214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9215 NL80211_FLAG_NEED_RTNL,
9216 },
9217 {
9218 .cmd = NL80211_CMD_DEAUTHENTICATE,
9219 .doit = nl80211_deauthenticate,
9220 .policy = nl80211_policy,
9221 .flags = GENL_ADMIN_PERM,
9222 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9223 NL80211_FLAG_NEED_RTNL,
9224 },
9225 {
9226 .cmd = NL80211_CMD_DISASSOCIATE,
9227 .doit = nl80211_disassociate,
9228 .policy = nl80211_policy,
9229 .flags = GENL_ADMIN_PERM,
9230 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9231 NL80211_FLAG_NEED_RTNL,
9232 },
9233 {
9234 .cmd = NL80211_CMD_JOIN_IBSS,
9235 .doit = nl80211_join_ibss,
9236 .policy = nl80211_policy,
9237 .flags = GENL_ADMIN_PERM,
9238 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9239 NL80211_FLAG_NEED_RTNL,
9240 },
9241 {
9242 .cmd = NL80211_CMD_LEAVE_IBSS,
9243 .doit = nl80211_leave_ibss,
9244 .policy = nl80211_policy,
9245 .flags = GENL_ADMIN_PERM,
9246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9247 NL80211_FLAG_NEED_RTNL,
9248 },
9249 #ifdef CONFIG_NL80211_TESTMODE
9250 {
9251 .cmd = NL80211_CMD_TESTMODE,
9252 .doit = nl80211_testmode_do,
9253 .dumpit = nl80211_testmode_dump,
9254 .policy = nl80211_policy,
9255 .flags = GENL_ADMIN_PERM,
9256 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9257 NL80211_FLAG_NEED_RTNL,
9258 },
9259 #endif
9260 {
9261 .cmd = NL80211_CMD_CONNECT,
9262 .doit = nl80211_connect,
9263 .policy = nl80211_policy,
9264 .flags = GENL_ADMIN_PERM,
9265 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9266 NL80211_FLAG_NEED_RTNL,
9267 },
9268 {
9269 .cmd = NL80211_CMD_DISCONNECT,
9270 .doit = nl80211_disconnect,
9271 .policy = nl80211_policy,
9272 .flags = GENL_ADMIN_PERM,
9273 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9274 NL80211_FLAG_NEED_RTNL,
9275 },
9276 {
9277 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9278 .doit = nl80211_wiphy_netns,
9279 .policy = nl80211_policy,
9280 .flags = GENL_ADMIN_PERM,
9281 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9282 NL80211_FLAG_NEED_RTNL,
9283 },
9284 {
9285 .cmd = NL80211_CMD_GET_SURVEY,
9286 .policy = nl80211_policy,
9287 .dumpit = nl80211_dump_survey,
9288 },
9289 {
9290 .cmd = NL80211_CMD_SET_PMKSA,
9291 .doit = nl80211_setdel_pmksa,
9292 .policy = nl80211_policy,
9293 .flags = GENL_ADMIN_PERM,
9294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9295 NL80211_FLAG_NEED_RTNL,
9296 },
9297 {
9298 .cmd = NL80211_CMD_DEL_PMKSA,
9299 .doit = nl80211_setdel_pmksa,
9300 .policy = nl80211_policy,
9301 .flags = GENL_ADMIN_PERM,
9302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9303 NL80211_FLAG_NEED_RTNL,
9304 },
9305 {
9306 .cmd = NL80211_CMD_FLUSH_PMKSA,
9307 .doit = nl80211_flush_pmksa,
9308 .policy = nl80211_policy,
9309 .flags = GENL_ADMIN_PERM,
9310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9311 NL80211_FLAG_NEED_RTNL,
9312 },
9313 {
9314 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9315 .doit = nl80211_remain_on_channel,
9316 .policy = nl80211_policy,
9317 .flags = GENL_ADMIN_PERM,
9318 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9319 NL80211_FLAG_NEED_RTNL,
9320 },
9321 {
9322 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9323 .doit = nl80211_cancel_remain_on_channel,
9324 .policy = nl80211_policy,
9325 .flags = GENL_ADMIN_PERM,
9326 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9327 NL80211_FLAG_NEED_RTNL,
9328 },
9329 {
9330 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9331 .doit = nl80211_set_tx_bitrate_mask,
9332 .policy = nl80211_policy,
9333 .flags = GENL_ADMIN_PERM,
9334 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9335 NL80211_FLAG_NEED_RTNL,
9336 },
9337 {
9338 .cmd = NL80211_CMD_REGISTER_FRAME,
9339 .doit = nl80211_register_mgmt,
9340 .policy = nl80211_policy,
9341 .flags = GENL_ADMIN_PERM,
9342 .internal_flags = NL80211_FLAG_NEED_WDEV |
9343 NL80211_FLAG_NEED_RTNL,
9344 },
9345 {
9346 .cmd = NL80211_CMD_FRAME,
9347 .doit = nl80211_tx_mgmt,
9348 .policy = nl80211_policy,
9349 .flags = GENL_ADMIN_PERM,
9350 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9351 NL80211_FLAG_NEED_RTNL,
9352 },
9353 {
9354 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9355 .doit = nl80211_tx_mgmt_cancel_wait,
9356 .policy = nl80211_policy,
9357 .flags = GENL_ADMIN_PERM,
9358 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9359 NL80211_FLAG_NEED_RTNL,
9360 },
9361 {
9362 .cmd = NL80211_CMD_SET_POWER_SAVE,
9363 .doit = nl80211_set_power_save,
9364 .policy = nl80211_policy,
9365 .flags = GENL_ADMIN_PERM,
9366 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9367 NL80211_FLAG_NEED_RTNL,
9368 },
9369 {
9370 .cmd = NL80211_CMD_GET_POWER_SAVE,
9371 .doit = nl80211_get_power_save,
9372 .policy = nl80211_policy,
9373 /* can be retrieved by unprivileged users */
9374 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9375 NL80211_FLAG_NEED_RTNL,
9376 },
9377 {
9378 .cmd = NL80211_CMD_SET_CQM,
9379 .doit = nl80211_set_cqm,
9380 .policy = nl80211_policy,
9381 .flags = GENL_ADMIN_PERM,
9382 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9383 NL80211_FLAG_NEED_RTNL,
9384 },
9385 {
9386 .cmd = NL80211_CMD_SET_CHANNEL,
9387 .doit = nl80211_set_channel,
9388 .policy = nl80211_policy,
9389 .flags = GENL_ADMIN_PERM,
9390 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9391 NL80211_FLAG_NEED_RTNL,
9392 },
9393 {
9394 .cmd = NL80211_CMD_SET_WDS_PEER,
9395 .doit = nl80211_set_wds_peer,
9396 .policy = nl80211_policy,
9397 .flags = GENL_ADMIN_PERM,
9398 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9399 NL80211_FLAG_NEED_RTNL,
9400 },
9401 {
9402 .cmd = NL80211_CMD_JOIN_MESH,
9403 .doit = nl80211_join_mesh,
9404 .policy = nl80211_policy,
9405 .flags = GENL_ADMIN_PERM,
9406 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9407 NL80211_FLAG_NEED_RTNL,
9408 },
9409 {
9410 .cmd = NL80211_CMD_LEAVE_MESH,
9411 .doit = nl80211_leave_mesh,
9412 .policy = nl80211_policy,
9413 .flags = GENL_ADMIN_PERM,
9414 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9415 NL80211_FLAG_NEED_RTNL,
9416 },
9417 #ifdef CONFIG_PM
9418 {
9419 .cmd = NL80211_CMD_GET_WOWLAN,
9420 .doit = nl80211_get_wowlan,
9421 .policy = nl80211_policy,
9422 /* can be retrieved by unprivileged users */
9423 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9424 NL80211_FLAG_NEED_RTNL,
9425 },
9426 {
9427 .cmd = NL80211_CMD_SET_WOWLAN,
9428 .doit = nl80211_set_wowlan,
9429 .policy = nl80211_policy,
9430 .flags = GENL_ADMIN_PERM,
9431 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9432 NL80211_FLAG_NEED_RTNL,
9433 },
9434 #endif
9435 {
9436 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9437 .doit = nl80211_set_rekey_data,
9438 .policy = nl80211_policy,
9439 .flags = GENL_ADMIN_PERM,
9440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9441 NL80211_FLAG_NEED_RTNL,
9442 },
9443 {
9444 .cmd = NL80211_CMD_TDLS_MGMT,
9445 .doit = nl80211_tdls_mgmt,
9446 .policy = nl80211_policy,
9447 .flags = GENL_ADMIN_PERM,
9448 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9449 NL80211_FLAG_NEED_RTNL,
9450 },
9451 {
9452 .cmd = NL80211_CMD_TDLS_OPER,
9453 .doit = nl80211_tdls_oper,
9454 .policy = nl80211_policy,
9455 .flags = GENL_ADMIN_PERM,
9456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9457 NL80211_FLAG_NEED_RTNL,
9458 },
9459 {
9460 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9461 .doit = nl80211_register_unexpected_frame,
9462 .policy = nl80211_policy,
9463 .flags = GENL_ADMIN_PERM,
9464 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9465 NL80211_FLAG_NEED_RTNL,
9466 },
9467 {
9468 .cmd = NL80211_CMD_PROBE_CLIENT,
9469 .doit = nl80211_probe_client,
9470 .policy = nl80211_policy,
9471 .flags = GENL_ADMIN_PERM,
9472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9473 NL80211_FLAG_NEED_RTNL,
9474 },
9475 {
9476 .cmd = NL80211_CMD_REGISTER_BEACONS,
9477 .doit = nl80211_register_beacons,
9478 .policy = nl80211_policy,
9479 .flags = GENL_ADMIN_PERM,
9480 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9481 NL80211_FLAG_NEED_RTNL,
9482 },
9483 {
9484 .cmd = NL80211_CMD_SET_NOACK_MAP,
9485 .doit = nl80211_set_noack_map,
9486 .policy = nl80211_policy,
9487 .flags = GENL_ADMIN_PERM,
9488 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9489 NL80211_FLAG_NEED_RTNL,
9490 },
9491 {
9492 .cmd = NL80211_CMD_START_P2P_DEVICE,
9493 .doit = nl80211_start_p2p_device,
9494 .policy = nl80211_policy,
9495 .flags = GENL_ADMIN_PERM,
9496 .internal_flags = NL80211_FLAG_NEED_WDEV |
9497 NL80211_FLAG_NEED_RTNL,
9498 },
9499 {
9500 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9501 .doit = nl80211_stop_p2p_device,
9502 .policy = nl80211_policy,
9503 .flags = GENL_ADMIN_PERM,
9504 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9505 NL80211_FLAG_NEED_RTNL,
9506 },
9507 {
9508 .cmd = NL80211_CMD_SET_MCAST_RATE,
9509 .doit = nl80211_set_mcast_rate,
9510 .policy = nl80211_policy,
9511 .flags = GENL_ADMIN_PERM,
9512 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9513 NL80211_FLAG_NEED_RTNL,
9514 },
9515 {
9516 .cmd = NL80211_CMD_SET_MAC_ACL,
9517 .doit = nl80211_set_mac_acl,
9518 .policy = nl80211_policy,
9519 .flags = GENL_ADMIN_PERM,
9520 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9521 NL80211_FLAG_NEED_RTNL,
9522 },
9523 {
9524 .cmd = NL80211_CMD_RADAR_DETECT,
9525 .doit = nl80211_start_radar_detection,
9526 .policy = nl80211_policy,
9527 .flags = GENL_ADMIN_PERM,
9528 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9529 NL80211_FLAG_NEED_RTNL,
9530 },
9531 {
9532 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9533 .doit = nl80211_get_protocol_features,
9534 .policy = nl80211_policy,
9535 },
9536 {
9537 .cmd = NL80211_CMD_UPDATE_FT_IES,
9538 .doit = nl80211_update_ft_ies,
9539 .policy = nl80211_policy,
9540 .flags = GENL_ADMIN_PERM,
9541 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9542 NL80211_FLAG_NEED_RTNL,
9543 },
9544 {
9545 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9546 .doit = nl80211_crit_protocol_start,
9547 .policy = nl80211_policy,
9548 .flags = GENL_ADMIN_PERM,
9549 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9550 NL80211_FLAG_NEED_RTNL,
9551 },
9552 {
9553 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9554 .doit = nl80211_crit_protocol_stop,
9555 .policy = nl80211_policy,
9556 .flags = GENL_ADMIN_PERM,
9557 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9558 NL80211_FLAG_NEED_RTNL,
9559 },
9560 {
9561 .cmd = NL80211_CMD_GET_COALESCE,
9562 .doit = nl80211_get_coalesce,
9563 .policy = nl80211_policy,
9564 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9565 NL80211_FLAG_NEED_RTNL,
9566 },
9567 {
9568 .cmd = NL80211_CMD_SET_COALESCE,
9569 .doit = nl80211_set_coalesce,
9570 .policy = nl80211_policy,
9571 .flags = GENL_ADMIN_PERM,
9572 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9573 NL80211_FLAG_NEED_RTNL,
9574 },
9575 {
9576 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9577 .doit = nl80211_channel_switch,
9578 .policy = nl80211_policy,
9579 .flags = GENL_ADMIN_PERM,
9580 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9581 NL80211_FLAG_NEED_RTNL,
9582 },
9583 };
9584
9585 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9586 .name = "mlme",
9587 };
9588
9589 /* multicast groups */
9590 static struct genl_multicast_group nl80211_config_mcgrp = {
9591 .name = "config",
9592 };
9593 static struct genl_multicast_group nl80211_scan_mcgrp = {
9594 .name = "scan",
9595 };
9596 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9597 .name = "regulatory",
9598 };
9599
9600 /* notification functions */
9601
9602 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9603 {
9604 struct sk_buff *msg;
9605 struct nl80211_dump_wiphy_state state = {};
9606
9607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9608 if (!msg)
9609 return;
9610
9611 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9612 nlmsg_free(msg);
9613 return;
9614 }
9615
9616 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9617 nl80211_config_mcgrp.id, GFP_KERNEL);
9618 }
9619
9620 static int nl80211_add_scan_req(struct sk_buff *msg,
9621 struct cfg80211_registered_device *rdev)
9622 {
9623 struct cfg80211_scan_request *req = rdev->scan_req;
9624 struct nlattr *nest;
9625 int i;
9626
9627 if (WARN_ON(!req))
9628 return 0;
9629
9630 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9631 if (!nest)
9632 goto nla_put_failure;
9633 for (i = 0; i < req->n_ssids; i++) {
9634 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9635 goto nla_put_failure;
9636 }
9637 nla_nest_end(msg, nest);
9638
9639 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9640 if (!nest)
9641 goto nla_put_failure;
9642 for (i = 0; i < req->n_channels; i++) {
9643 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9644 goto nla_put_failure;
9645 }
9646 nla_nest_end(msg, nest);
9647
9648 if (req->ie &&
9649 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9650 goto nla_put_failure;
9651
9652 if (req->flags)
9653 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9654
9655 return 0;
9656 nla_put_failure:
9657 return -ENOBUFS;
9658 }
9659
9660 static int nl80211_send_scan_msg(struct sk_buff *msg,
9661 struct cfg80211_registered_device *rdev,
9662 struct wireless_dev *wdev,
9663 u32 portid, u32 seq, int flags,
9664 u32 cmd)
9665 {
9666 void *hdr;
9667
9668 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9669 if (!hdr)
9670 return -1;
9671
9672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9673 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9674 wdev->netdev->ifindex)) ||
9675 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9676 goto nla_put_failure;
9677
9678 /* ignore errors and send incomplete event anyway */
9679 nl80211_add_scan_req(msg, rdev);
9680
9681 return genlmsg_end(msg, hdr);
9682
9683 nla_put_failure:
9684 genlmsg_cancel(msg, hdr);
9685 return -EMSGSIZE;
9686 }
9687
9688 static int
9689 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9690 struct cfg80211_registered_device *rdev,
9691 struct net_device *netdev,
9692 u32 portid, u32 seq, int flags, u32 cmd)
9693 {
9694 void *hdr;
9695
9696 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9697 if (!hdr)
9698 return -1;
9699
9700 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9701 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9702 goto nla_put_failure;
9703
9704 return genlmsg_end(msg, hdr);
9705
9706 nla_put_failure:
9707 genlmsg_cancel(msg, hdr);
9708 return -EMSGSIZE;
9709 }
9710
9711 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9712 struct wireless_dev *wdev)
9713 {
9714 struct sk_buff *msg;
9715
9716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9717 if (!msg)
9718 return;
9719
9720 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9721 NL80211_CMD_TRIGGER_SCAN) < 0) {
9722 nlmsg_free(msg);
9723 return;
9724 }
9725
9726 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9727 nl80211_scan_mcgrp.id, GFP_KERNEL);
9728 }
9729
9730 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9731 struct wireless_dev *wdev)
9732 {
9733 struct sk_buff *msg;
9734
9735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9736 if (!msg)
9737 return;
9738
9739 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9740 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9741 nlmsg_free(msg);
9742 return;
9743 }
9744
9745 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9746 nl80211_scan_mcgrp.id, GFP_KERNEL);
9747 }
9748
9749 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9750 struct wireless_dev *wdev)
9751 {
9752 struct sk_buff *msg;
9753
9754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9755 if (!msg)
9756 return;
9757
9758 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9759 NL80211_CMD_SCAN_ABORTED) < 0) {
9760 nlmsg_free(msg);
9761 return;
9762 }
9763
9764 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9765 nl80211_scan_mcgrp.id, GFP_KERNEL);
9766 }
9767
9768 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9769 struct net_device *netdev)
9770 {
9771 struct sk_buff *msg;
9772
9773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9774 if (!msg)
9775 return;
9776
9777 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9778 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9779 nlmsg_free(msg);
9780 return;
9781 }
9782
9783 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9784 nl80211_scan_mcgrp.id, GFP_KERNEL);
9785 }
9786
9787 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9788 struct net_device *netdev, u32 cmd)
9789 {
9790 struct sk_buff *msg;
9791
9792 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9793 if (!msg)
9794 return;
9795
9796 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9797 nlmsg_free(msg);
9798 return;
9799 }
9800
9801 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9802 nl80211_scan_mcgrp.id, GFP_KERNEL);
9803 }
9804
9805 /*
9806 * This can happen on global regulatory changes or device specific settings
9807 * based on custom world regulatory domains.
9808 */
9809 void nl80211_send_reg_change_event(struct regulatory_request *request)
9810 {
9811 struct sk_buff *msg;
9812 void *hdr;
9813
9814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9815 if (!msg)
9816 return;
9817
9818 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9819 if (!hdr) {
9820 nlmsg_free(msg);
9821 return;
9822 }
9823
9824 /* Userspace can always count this one always being set */
9825 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9826 goto nla_put_failure;
9827
9828 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9829 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9830 NL80211_REGDOM_TYPE_WORLD))
9831 goto nla_put_failure;
9832 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9833 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9834 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9835 goto nla_put_failure;
9836 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9837 request->intersect) {
9838 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9839 NL80211_REGDOM_TYPE_INTERSECTION))
9840 goto nla_put_failure;
9841 } else {
9842 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9843 NL80211_REGDOM_TYPE_COUNTRY) ||
9844 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9845 request->alpha2))
9846 goto nla_put_failure;
9847 }
9848
9849 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9850 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9851 goto nla_put_failure;
9852
9853 genlmsg_end(msg, hdr);
9854
9855 rcu_read_lock();
9856 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9857 GFP_ATOMIC);
9858 rcu_read_unlock();
9859
9860 return;
9861
9862 nla_put_failure:
9863 genlmsg_cancel(msg, hdr);
9864 nlmsg_free(msg);
9865 }
9866
9867 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9868 struct net_device *netdev,
9869 const u8 *buf, size_t len,
9870 enum nl80211_commands cmd, gfp_t gfp)
9871 {
9872 struct sk_buff *msg;
9873 void *hdr;
9874
9875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9876 if (!msg)
9877 return;
9878
9879 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9880 if (!hdr) {
9881 nlmsg_free(msg);
9882 return;
9883 }
9884
9885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9887 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9888 goto nla_put_failure;
9889
9890 genlmsg_end(msg, hdr);
9891
9892 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9893 nl80211_mlme_mcgrp.id, gfp);
9894 return;
9895
9896 nla_put_failure:
9897 genlmsg_cancel(msg, hdr);
9898 nlmsg_free(msg);
9899 }
9900
9901 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9902 struct net_device *netdev, const u8 *buf,
9903 size_t len, gfp_t gfp)
9904 {
9905 nl80211_send_mlme_event(rdev, netdev, buf, len,
9906 NL80211_CMD_AUTHENTICATE, gfp);
9907 }
9908
9909 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9910 struct net_device *netdev, const u8 *buf,
9911 size_t len, gfp_t gfp)
9912 {
9913 nl80211_send_mlme_event(rdev, netdev, buf, len,
9914 NL80211_CMD_ASSOCIATE, gfp);
9915 }
9916
9917 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9918 struct net_device *netdev, const u8 *buf,
9919 size_t len, gfp_t gfp)
9920 {
9921 nl80211_send_mlme_event(rdev, netdev, buf, len,
9922 NL80211_CMD_DEAUTHENTICATE, gfp);
9923 }
9924
9925 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9926 struct net_device *netdev, const u8 *buf,
9927 size_t len, gfp_t gfp)
9928 {
9929 nl80211_send_mlme_event(rdev, netdev, buf, len,
9930 NL80211_CMD_DISASSOCIATE, gfp);
9931 }
9932
9933 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9934 size_t len)
9935 {
9936 struct wireless_dev *wdev = dev->ieee80211_ptr;
9937 struct wiphy *wiphy = wdev->wiphy;
9938 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9939 const struct ieee80211_mgmt *mgmt = (void *)buf;
9940 u32 cmd;
9941
9942 if (WARN_ON(len < 2))
9943 return;
9944
9945 if (ieee80211_is_deauth(mgmt->frame_control))
9946 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9947 else
9948 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9949
9950 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9951 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9952 }
9953 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9954
9955 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9956 struct net_device *netdev, int cmd,
9957 const u8 *addr, gfp_t gfp)
9958 {
9959 struct sk_buff *msg;
9960 void *hdr;
9961
9962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9963 if (!msg)
9964 return;
9965
9966 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9967 if (!hdr) {
9968 nlmsg_free(msg);
9969 return;
9970 }
9971
9972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9973 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9974 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9975 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9976 goto nla_put_failure;
9977
9978 genlmsg_end(msg, hdr);
9979
9980 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9981 nl80211_mlme_mcgrp.id, gfp);
9982 return;
9983
9984 nla_put_failure:
9985 genlmsg_cancel(msg, hdr);
9986 nlmsg_free(msg);
9987 }
9988
9989 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9990 struct net_device *netdev, const u8 *addr,
9991 gfp_t gfp)
9992 {
9993 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9994 addr, gfp);
9995 }
9996
9997 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9998 struct net_device *netdev, const u8 *addr,
9999 gfp_t gfp)
10000 {
10001 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10002 addr, gfp);
10003 }
10004
10005 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10006 struct net_device *netdev, const u8 *bssid,
10007 const u8 *req_ie, size_t req_ie_len,
10008 const u8 *resp_ie, size_t resp_ie_len,
10009 u16 status, gfp_t gfp)
10010 {
10011 struct sk_buff *msg;
10012 void *hdr;
10013
10014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10015 if (!msg)
10016 return;
10017
10018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10019 if (!hdr) {
10020 nlmsg_free(msg);
10021 return;
10022 }
10023
10024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10025 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10026 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10027 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10028 (req_ie &&
10029 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10030 (resp_ie &&
10031 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10032 goto nla_put_failure;
10033
10034 genlmsg_end(msg, hdr);
10035
10036 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10037 nl80211_mlme_mcgrp.id, gfp);
10038 return;
10039
10040 nla_put_failure:
10041 genlmsg_cancel(msg, hdr);
10042 nlmsg_free(msg);
10043
10044 }
10045
10046 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10047 struct net_device *netdev, const u8 *bssid,
10048 const u8 *req_ie, size_t req_ie_len,
10049 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10050 {
10051 struct sk_buff *msg;
10052 void *hdr;
10053
10054 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10055 if (!msg)
10056 return;
10057
10058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10059 if (!hdr) {
10060 nlmsg_free(msg);
10061 return;
10062 }
10063
10064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10065 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10066 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10067 (req_ie &&
10068 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10069 (resp_ie &&
10070 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10071 goto nla_put_failure;
10072
10073 genlmsg_end(msg, hdr);
10074
10075 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10076 nl80211_mlme_mcgrp.id, gfp);
10077 return;
10078
10079 nla_put_failure:
10080 genlmsg_cancel(msg, hdr);
10081 nlmsg_free(msg);
10082
10083 }
10084
10085 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10086 struct net_device *netdev, u16 reason,
10087 const u8 *ie, size_t ie_len, bool from_ap)
10088 {
10089 struct sk_buff *msg;
10090 void *hdr;
10091
10092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10093 if (!msg)
10094 return;
10095
10096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10097 if (!hdr) {
10098 nlmsg_free(msg);
10099 return;
10100 }
10101
10102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10103 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10104 (from_ap && reason &&
10105 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10106 (from_ap &&
10107 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10108 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10109 goto nla_put_failure;
10110
10111 genlmsg_end(msg, hdr);
10112
10113 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10114 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10115 return;
10116
10117 nla_put_failure:
10118 genlmsg_cancel(msg, hdr);
10119 nlmsg_free(msg);
10120
10121 }
10122
10123 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10124 struct net_device *netdev, const u8 *bssid,
10125 gfp_t gfp)
10126 {
10127 struct sk_buff *msg;
10128 void *hdr;
10129
10130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10131 if (!msg)
10132 return;
10133
10134 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10135 if (!hdr) {
10136 nlmsg_free(msg);
10137 return;
10138 }
10139
10140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10141 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10142 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10143 goto nla_put_failure;
10144
10145 genlmsg_end(msg, hdr);
10146
10147 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10148 nl80211_mlme_mcgrp.id, gfp);
10149 return;
10150
10151 nla_put_failure:
10152 genlmsg_cancel(msg, hdr);
10153 nlmsg_free(msg);
10154 }
10155
10156 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10157 const u8* ie, u8 ie_len, gfp_t gfp)
10158 {
10159 struct wireless_dev *wdev = dev->ieee80211_ptr;
10160 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10161 struct sk_buff *msg;
10162 void *hdr;
10163
10164 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10165 return;
10166
10167 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10168
10169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10170 if (!msg)
10171 return;
10172
10173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10174 if (!hdr) {
10175 nlmsg_free(msg);
10176 return;
10177 }
10178
10179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10180 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10182 (ie_len && ie &&
10183 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10184 goto nla_put_failure;
10185
10186 genlmsg_end(msg, hdr);
10187
10188 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10189 nl80211_mlme_mcgrp.id, gfp);
10190 return;
10191
10192 nla_put_failure:
10193 genlmsg_cancel(msg, hdr);
10194 nlmsg_free(msg);
10195 }
10196 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10197
10198 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10199 struct net_device *netdev, const u8 *addr,
10200 enum nl80211_key_type key_type, int key_id,
10201 const u8 *tsc, gfp_t gfp)
10202 {
10203 struct sk_buff *msg;
10204 void *hdr;
10205
10206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10207 if (!msg)
10208 return;
10209
10210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10211 if (!hdr) {
10212 nlmsg_free(msg);
10213 return;
10214 }
10215
10216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10217 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10218 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10219 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10220 (key_id != -1 &&
10221 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10222 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10223 goto nla_put_failure;
10224
10225 genlmsg_end(msg, hdr);
10226
10227 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10228 nl80211_mlme_mcgrp.id, gfp);
10229 return;
10230
10231 nla_put_failure:
10232 genlmsg_cancel(msg, hdr);
10233 nlmsg_free(msg);
10234 }
10235
10236 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10237 struct ieee80211_channel *channel_before,
10238 struct ieee80211_channel *channel_after)
10239 {
10240 struct sk_buff *msg;
10241 void *hdr;
10242 struct nlattr *nl_freq;
10243
10244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10245 if (!msg)
10246 return;
10247
10248 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10249 if (!hdr) {
10250 nlmsg_free(msg);
10251 return;
10252 }
10253
10254 /*
10255 * Since we are applying the beacon hint to a wiphy we know its
10256 * wiphy_idx is valid
10257 */
10258 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10259 goto nla_put_failure;
10260
10261 /* Before */
10262 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10263 if (!nl_freq)
10264 goto nla_put_failure;
10265 if (nl80211_msg_put_channel(msg, channel_before, false))
10266 goto nla_put_failure;
10267 nla_nest_end(msg, nl_freq);
10268
10269 /* After */
10270 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10271 if (!nl_freq)
10272 goto nla_put_failure;
10273 if (nl80211_msg_put_channel(msg, channel_after, false))
10274 goto nla_put_failure;
10275 nla_nest_end(msg, nl_freq);
10276
10277 genlmsg_end(msg, hdr);
10278
10279 rcu_read_lock();
10280 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10281 GFP_ATOMIC);
10282 rcu_read_unlock();
10283
10284 return;
10285
10286 nla_put_failure:
10287 genlmsg_cancel(msg, hdr);
10288 nlmsg_free(msg);
10289 }
10290
10291 static void nl80211_send_remain_on_chan_event(
10292 int cmd, struct cfg80211_registered_device *rdev,
10293 struct wireless_dev *wdev, u64 cookie,
10294 struct ieee80211_channel *chan,
10295 unsigned int duration, gfp_t gfp)
10296 {
10297 struct sk_buff *msg;
10298 void *hdr;
10299
10300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10301 if (!msg)
10302 return;
10303
10304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10305 if (!hdr) {
10306 nlmsg_free(msg);
10307 return;
10308 }
10309
10310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10311 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10312 wdev->netdev->ifindex)) ||
10313 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10314 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10315 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10316 NL80211_CHAN_NO_HT) ||
10317 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10318 goto nla_put_failure;
10319
10320 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10321 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10322 goto nla_put_failure;
10323
10324 genlmsg_end(msg, hdr);
10325
10326 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10327 nl80211_mlme_mcgrp.id, gfp);
10328 return;
10329
10330 nla_put_failure:
10331 genlmsg_cancel(msg, hdr);
10332 nlmsg_free(msg);
10333 }
10334
10335 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10336 struct ieee80211_channel *chan,
10337 unsigned int duration, gfp_t gfp)
10338 {
10339 struct wiphy *wiphy = wdev->wiphy;
10340 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10341
10342 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10343 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10344 rdev, wdev, cookie, chan,
10345 duration, gfp);
10346 }
10347 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10348
10349 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10350 struct ieee80211_channel *chan,
10351 gfp_t gfp)
10352 {
10353 struct wiphy *wiphy = wdev->wiphy;
10354 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10355
10356 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10357 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10358 rdev, wdev, cookie, chan, 0, gfp);
10359 }
10360 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10361
10362 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10363 struct station_info *sinfo, gfp_t gfp)
10364 {
10365 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10366 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10367 struct sk_buff *msg;
10368
10369 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10370
10371 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10372 if (!msg)
10373 return;
10374
10375 if (nl80211_send_station(msg, 0, 0, 0,
10376 rdev, dev, mac_addr, sinfo) < 0) {
10377 nlmsg_free(msg);
10378 return;
10379 }
10380
10381 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10382 nl80211_mlme_mcgrp.id, gfp);
10383 }
10384 EXPORT_SYMBOL(cfg80211_new_sta);
10385
10386 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10387 {
10388 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10389 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10390 struct sk_buff *msg;
10391 void *hdr;
10392
10393 trace_cfg80211_del_sta(dev, mac_addr);
10394
10395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10396 if (!msg)
10397 return;
10398
10399 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10400 if (!hdr) {
10401 nlmsg_free(msg);
10402 return;
10403 }
10404
10405 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10406 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10407 goto nla_put_failure;
10408
10409 genlmsg_end(msg, hdr);
10410
10411 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10412 nl80211_mlme_mcgrp.id, gfp);
10413 return;
10414
10415 nla_put_failure:
10416 genlmsg_cancel(msg, hdr);
10417 nlmsg_free(msg);
10418 }
10419 EXPORT_SYMBOL(cfg80211_del_sta);
10420
10421 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10422 enum nl80211_connect_failed_reason reason,
10423 gfp_t gfp)
10424 {
10425 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10426 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10427 struct sk_buff *msg;
10428 void *hdr;
10429
10430 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10431 if (!msg)
10432 return;
10433
10434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10435 if (!hdr) {
10436 nlmsg_free(msg);
10437 return;
10438 }
10439
10440 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10442 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10443 goto nla_put_failure;
10444
10445 genlmsg_end(msg, hdr);
10446
10447 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10448 nl80211_mlme_mcgrp.id, gfp);
10449 return;
10450
10451 nla_put_failure:
10452 genlmsg_cancel(msg, hdr);
10453 nlmsg_free(msg);
10454 }
10455 EXPORT_SYMBOL(cfg80211_conn_failed);
10456
10457 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10458 const u8 *addr, gfp_t gfp)
10459 {
10460 struct wireless_dev *wdev = dev->ieee80211_ptr;
10461 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10462 struct sk_buff *msg;
10463 void *hdr;
10464 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10465
10466 if (!nlportid)
10467 return false;
10468
10469 msg = nlmsg_new(100, gfp);
10470 if (!msg)
10471 return true;
10472
10473 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10474 if (!hdr) {
10475 nlmsg_free(msg);
10476 return true;
10477 }
10478
10479 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10480 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10481 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10482 goto nla_put_failure;
10483
10484 genlmsg_end(msg, hdr);
10485 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10486 return true;
10487
10488 nla_put_failure:
10489 genlmsg_cancel(msg, hdr);
10490 nlmsg_free(msg);
10491 return true;
10492 }
10493
10494 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10495 const u8 *addr, gfp_t gfp)
10496 {
10497 struct wireless_dev *wdev = dev->ieee80211_ptr;
10498 bool ret;
10499
10500 trace_cfg80211_rx_spurious_frame(dev, addr);
10501
10502 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10503 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10504 trace_cfg80211_return_bool(false);
10505 return false;
10506 }
10507 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10508 addr, gfp);
10509 trace_cfg80211_return_bool(ret);
10510 return ret;
10511 }
10512 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10513
10514 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10515 const u8 *addr, gfp_t gfp)
10516 {
10517 struct wireless_dev *wdev = dev->ieee80211_ptr;
10518 bool ret;
10519
10520 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10521
10522 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10523 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10524 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10525 trace_cfg80211_return_bool(false);
10526 return false;
10527 }
10528 ret = __nl80211_unexpected_frame(dev,
10529 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10530 addr, gfp);
10531 trace_cfg80211_return_bool(ret);
10532 return ret;
10533 }
10534 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10535
10536 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10537 struct wireless_dev *wdev, u32 nlportid,
10538 int freq, int sig_dbm,
10539 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10540 {
10541 struct net_device *netdev = wdev->netdev;
10542 struct sk_buff *msg;
10543 void *hdr;
10544
10545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10546 if (!msg)
10547 return -ENOMEM;
10548
10549 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10550 if (!hdr) {
10551 nlmsg_free(msg);
10552 return -ENOMEM;
10553 }
10554
10555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10556 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10557 netdev->ifindex)) ||
10558 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10559 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10560 (sig_dbm &&
10561 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10562 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10563 (flags &&
10564 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10565 goto nla_put_failure;
10566
10567 genlmsg_end(msg, hdr);
10568
10569 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10570
10571 nla_put_failure:
10572 genlmsg_cancel(msg, hdr);
10573 nlmsg_free(msg);
10574 return -ENOBUFS;
10575 }
10576
10577 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10578 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10579 {
10580 struct wiphy *wiphy = wdev->wiphy;
10581 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10582 struct net_device *netdev = wdev->netdev;
10583 struct sk_buff *msg;
10584 void *hdr;
10585
10586 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10587
10588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10589 if (!msg)
10590 return;
10591
10592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10593 if (!hdr) {
10594 nlmsg_free(msg);
10595 return;
10596 }
10597
10598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10599 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10600 netdev->ifindex)) ||
10601 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10602 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10603 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10604 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10605 goto nla_put_failure;
10606
10607 genlmsg_end(msg, hdr);
10608
10609 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10610 nl80211_mlme_mcgrp.id, gfp);
10611 return;
10612
10613 nla_put_failure:
10614 genlmsg_cancel(msg, hdr);
10615 nlmsg_free(msg);
10616 }
10617 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10618
10619 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10620 enum nl80211_cqm_rssi_threshold_event rssi_event,
10621 gfp_t gfp)
10622 {
10623 struct wireless_dev *wdev = dev->ieee80211_ptr;
10624 struct wiphy *wiphy = wdev->wiphy;
10625 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10626 struct sk_buff *msg;
10627 struct nlattr *pinfoattr;
10628 void *hdr;
10629
10630 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10631
10632 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10633 if (!msg)
10634 return;
10635
10636 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10637 if (!hdr) {
10638 nlmsg_free(msg);
10639 return;
10640 }
10641
10642 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10643 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10644 goto nla_put_failure;
10645
10646 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10647 if (!pinfoattr)
10648 goto nla_put_failure;
10649
10650 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10651 rssi_event))
10652 goto nla_put_failure;
10653
10654 nla_nest_end(msg, pinfoattr);
10655
10656 genlmsg_end(msg, hdr);
10657
10658 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10659 nl80211_mlme_mcgrp.id, gfp);
10660 return;
10661
10662 nla_put_failure:
10663 genlmsg_cancel(msg, hdr);
10664 nlmsg_free(msg);
10665 }
10666 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10667
10668 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10669 struct net_device *netdev, const u8 *bssid,
10670 const u8 *replay_ctr, gfp_t gfp)
10671 {
10672 struct sk_buff *msg;
10673 struct nlattr *rekey_attr;
10674 void *hdr;
10675
10676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10677 if (!msg)
10678 return;
10679
10680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10681 if (!hdr) {
10682 nlmsg_free(msg);
10683 return;
10684 }
10685
10686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10689 goto nla_put_failure;
10690
10691 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10692 if (!rekey_attr)
10693 goto nla_put_failure;
10694
10695 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10696 NL80211_REPLAY_CTR_LEN, replay_ctr))
10697 goto nla_put_failure;
10698
10699 nla_nest_end(msg, rekey_attr);
10700
10701 genlmsg_end(msg, hdr);
10702
10703 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10704 nl80211_mlme_mcgrp.id, gfp);
10705 return;
10706
10707 nla_put_failure:
10708 genlmsg_cancel(msg, hdr);
10709 nlmsg_free(msg);
10710 }
10711
10712 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10713 const u8 *replay_ctr, gfp_t gfp)
10714 {
10715 struct wireless_dev *wdev = dev->ieee80211_ptr;
10716 struct wiphy *wiphy = wdev->wiphy;
10717 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10718
10719 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10720 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10721 }
10722 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10723
10724 static void
10725 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10726 struct net_device *netdev, int index,
10727 const u8 *bssid, bool preauth, gfp_t gfp)
10728 {
10729 struct sk_buff *msg;
10730 struct nlattr *attr;
10731 void *hdr;
10732
10733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10734 if (!msg)
10735 return;
10736
10737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10738 if (!hdr) {
10739 nlmsg_free(msg);
10740 return;
10741 }
10742
10743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10744 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10745 goto nla_put_failure;
10746
10747 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10748 if (!attr)
10749 goto nla_put_failure;
10750
10751 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10752 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10753 (preauth &&
10754 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10755 goto nla_put_failure;
10756
10757 nla_nest_end(msg, attr);
10758
10759 genlmsg_end(msg, hdr);
10760
10761 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10762 nl80211_mlme_mcgrp.id, gfp);
10763 return;
10764
10765 nla_put_failure:
10766 genlmsg_cancel(msg, hdr);
10767 nlmsg_free(msg);
10768 }
10769
10770 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10771 const u8 *bssid, bool preauth, gfp_t gfp)
10772 {
10773 struct wireless_dev *wdev = dev->ieee80211_ptr;
10774 struct wiphy *wiphy = wdev->wiphy;
10775 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10776
10777 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10778 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10779 }
10780 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10781
10782 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10783 struct net_device *netdev,
10784 struct cfg80211_chan_def *chandef,
10785 gfp_t gfp)
10786 {
10787 struct sk_buff *msg;
10788 void *hdr;
10789
10790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10791 if (!msg)
10792 return;
10793
10794 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10795 if (!hdr) {
10796 nlmsg_free(msg);
10797 return;
10798 }
10799
10800 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10801 goto nla_put_failure;
10802
10803 if (nl80211_send_chandef(msg, chandef))
10804 goto nla_put_failure;
10805
10806 genlmsg_end(msg, hdr);
10807
10808 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10809 nl80211_mlme_mcgrp.id, gfp);
10810 return;
10811
10812 nla_put_failure:
10813 genlmsg_cancel(msg, hdr);
10814 nlmsg_free(msg);
10815 }
10816
10817 void cfg80211_ch_switch_notify(struct net_device *dev,
10818 struct cfg80211_chan_def *chandef)
10819 {
10820 struct wireless_dev *wdev = dev->ieee80211_ptr;
10821 struct wiphy *wiphy = wdev->wiphy;
10822 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10823
10824 ASSERT_WDEV_LOCK(wdev);
10825
10826 trace_cfg80211_ch_switch_notify(dev, chandef);
10827
10828 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10829 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10830 wdev->iftype != NL80211_IFTYPE_ADHOC &&
10831 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10832 return;
10833
10834 wdev->channel = chandef->chan;
10835 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10836 }
10837 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10838
10839 void cfg80211_cqm_txe_notify(struct net_device *dev,
10840 const u8 *peer, u32 num_packets,
10841 u32 rate, u32 intvl, gfp_t gfp)
10842 {
10843 struct wireless_dev *wdev = dev->ieee80211_ptr;
10844 struct wiphy *wiphy = wdev->wiphy;
10845 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10846 struct sk_buff *msg;
10847 struct nlattr *pinfoattr;
10848 void *hdr;
10849
10850 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10851 if (!msg)
10852 return;
10853
10854 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10855 if (!hdr) {
10856 nlmsg_free(msg);
10857 return;
10858 }
10859
10860 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10861 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10862 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10863 goto nla_put_failure;
10864
10865 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10866 if (!pinfoattr)
10867 goto nla_put_failure;
10868
10869 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10870 goto nla_put_failure;
10871
10872 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10873 goto nla_put_failure;
10874
10875 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10876 goto nla_put_failure;
10877
10878 nla_nest_end(msg, pinfoattr);
10879
10880 genlmsg_end(msg, hdr);
10881
10882 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10883 nl80211_mlme_mcgrp.id, gfp);
10884 return;
10885
10886 nla_put_failure:
10887 genlmsg_cancel(msg, hdr);
10888 nlmsg_free(msg);
10889 }
10890 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10891
10892 void
10893 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10894 const struct cfg80211_chan_def *chandef,
10895 enum nl80211_radar_event event,
10896 struct net_device *netdev, gfp_t gfp)
10897 {
10898 struct sk_buff *msg;
10899 void *hdr;
10900
10901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10902 if (!msg)
10903 return;
10904
10905 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10906 if (!hdr) {
10907 nlmsg_free(msg);
10908 return;
10909 }
10910
10911 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10912 goto nla_put_failure;
10913
10914 /* NOP and radar events don't need a netdev parameter */
10915 if (netdev) {
10916 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10917
10918 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10919 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10920 goto nla_put_failure;
10921 }
10922
10923 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10924 goto nla_put_failure;
10925
10926 if (nl80211_send_chandef(msg, chandef))
10927 goto nla_put_failure;
10928
10929 genlmsg_end(msg, hdr);
10930
10931 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10932 nl80211_mlme_mcgrp.id, gfp);
10933 return;
10934
10935 nla_put_failure:
10936 genlmsg_cancel(msg, hdr);
10937 nlmsg_free(msg);
10938 }
10939
10940 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10941 const u8 *peer, u32 num_packets, gfp_t gfp)
10942 {
10943 struct wireless_dev *wdev = dev->ieee80211_ptr;
10944 struct wiphy *wiphy = wdev->wiphy;
10945 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10946 struct sk_buff *msg;
10947 struct nlattr *pinfoattr;
10948 void *hdr;
10949
10950 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10951
10952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10953 if (!msg)
10954 return;
10955
10956 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10957 if (!hdr) {
10958 nlmsg_free(msg);
10959 return;
10960 }
10961
10962 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10963 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10964 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10965 goto nla_put_failure;
10966
10967 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10968 if (!pinfoattr)
10969 goto nla_put_failure;
10970
10971 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10972 goto nla_put_failure;
10973
10974 nla_nest_end(msg, pinfoattr);
10975
10976 genlmsg_end(msg, hdr);
10977
10978 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10979 nl80211_mlme_mcgrp.id, gfp);
10980 return;
10981
10982 nla_put_failure:
10983 genlmsg_cancel(msg, hdr);
10984 nlmsg_free(msg);
10985 }
10986 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10987
10988 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10989 u64 cookie, bool acked, gfp_t gfp)
10990 {
10991 struct wireless_dev *wdev = dev->ieee80211_ptr;
10992 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10993 struct sk_buff *msg;
10994 void *hdr;
10995
10996 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10997
10998 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10999
11000 if (!msg)
11001 return;
11002
11003 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11004 if (!hdr) {
11005 nlmsg_free(msg);
11006 return;
11007 }
11008
11009 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11010 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11011 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11012 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11013 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11014 goto nla_put_failure;
11015
11016 genlmsg_end(msg, hdr);
11017
11018 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11019 nl80211_mlme_mcgrp.id, gfp);
11020 return;
11021
11022 nla_put_failure:
11023 genlmsg_cancel(msg, hdr);
11024 nlmsg_free(msg);
11025 }
11026 EXPORT_SYMBOL(cfg80211_probe_status);
11027
11028 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11029 const u8 *frame, size_t len,
11030 int freq, int sig_dbm)
11031 {
11032 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11033 struct sk_buff *msg;
11034 void *hdr;
11035 struct cfg80211_beacon_registration *reg;
11036
11037 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11038
11039 spin_lock_bh(&rdev->beacon_registrations_lock);
11040 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11041 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11042 if (!msg) {
11043 spin_unlock_bh(&rdev->beacon_registrations_lock);
11044 return;
11045 }
11046
11047 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11048 if (!hdr)
11049 goto nla_put_failure;
11050
11051 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11052 (freq &&
11053 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11054 (sig_dbm &&
11055 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11056 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11057 goto nla_put_failure;
11058
11059 genlmsg_end(msg, hdr);
11060
11061 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11062 }
11063 spin_unlock_bh(&rdev->beacon_registrations_lock);
11064 return;
11065
11066 nla_put_failure:
11067 spin_unlock_bh(&rdev->beacon_registrations_lock);
11068 if (hdr)
11069 genlmsg_cancel(msg, hdr);
11070 nlmsg_free(msg);
11071 }
11072 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11073
11074 #ifdef CONFIG_PM
11075 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11076 struct cfg80211_wowlan_wakeup *wakeup,
11077 gfp_t gfp)
11078 {
11079 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11080 struct sk_buff *msg;
11081 void *hdr;
11082 int size = 200;
11083
11084 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11085
11086 if (wakeup)
11087 size += wakeup->packet_present_len;
11088
11089 msg = nlmsg_new(size, gfp);
11090 if (!msg)
11091 return;
11092
11093 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11094 if (!hdr)
11095 goto free_msg;
11096
11097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11098 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11099 goto free_msg;
11100
11101 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11102 wdev->netdev->ifindex))
11103 goto free_msg;
11104
11105 if (wakeup) {
11106 struct nlattr *reasons;
11107
11108 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11109
11110 if (wakeup->disconnect &&
11111 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11112 goto free_msg;
11113 if (wakeup->magic_pkt &&
11114 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11115 goto free_msg;
11116 if (wakeup->gtk_rekey_failure &&
11117 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11118 goto free_msg;
11119 if (wakeup->eap_identity_req &&
11120 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11121 goto free_msg;
11122 if (wakeup->four_way_handshake &&
11123 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11124 goto free_msg;
11125 if (wakeup->rfkill_release &&
11126 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11127 goto free_msg;
11128
11129 if (wakeup->pattern_idx >= 0 &&
11130 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11131 wakeup->pattern_idx))
11132 goto free_msg;
11133
11134 if (wakeup->tcp_match)
11135 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11136
11137 if (wakeup->tcp_connlost)
11138 nla_put_flag(msg,
11139 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11140
11141 if (wakeup->tcp_nomoretokens)
11142 nla_put_flag(msg,
11143 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11144
11145 if (wakeup->packet) {
11146 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11147 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11148
11149 if (!wakeup->packet_80211) {
11150 pkt_attr =
11151 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11152 len_attr =
11153 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11154 }
11155
11156 if (wakeup->packet_len &&
11157 nla_put_u32(msg, len_attr, wakeup->packet_len))
11158 goto free_msg;
11159
11160 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11161 wakeup->packet))
11162 goto free_msg;
11163 }
11164
11165 nla_nest_end(msg, reasons);
11166 }
11167
11168 genlmsg_end(msg, hdr);
11169
11170 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11171 nl80211_mlme_mcgrp.id, gfp);
11172 return;
11173
11174 free_msg:
11175 nlmsg_free(msg);
11176 }
11177 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11178 #endif
11179
11180 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11181 enum nl80211_tdls_operation oper,
11182 u16 reason_code, gfp_t gfp)
11183 {
11184 struct wireless_dev *wdev = dev->ieee80211_ptr;
11185 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11186 struct sk_buff *msg;
11187 void *hdr;
11188
11189 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11190 reason_code);
11191
11192 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11193 if (!msg)
11194 return;
11195
11196 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11197 if (!hdr) {
11198 nlmsg_free(msg);
11199 return;
11200 }
11201
11202 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11203 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11204 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11205 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11206 (reason_code > 0 &&
11207 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11208 goto nla_put_failure;
11209
11210 genlmsg_end(msg, hdr);
11211
11212 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11213 nl80211_mlme_mcgrp.id, gfp);
11214 return;
11215
11216 nla_put_failure:
11217 genlmsg_cancel(msg, hdr);
11218 nlmsg_free(msg);
11219 }
11220 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11221
11222 static int nl80211_netlink_notify(struct notifier_block * nb,
11223 unsigned long state,
11224 void *_notify)
11225 {
11226 struct netlink_notify *notify = _notify;
11227 struct cfg80211_registered_device *rdev;
11228 struct wireless_dev *wdev;
11229 struct cfg80211_beacon_registration *reg, *tmp;
11230
11231 if (state != NETLINK_URELEASE)
11232 return NOTIFY_DONE;
11233
11234 rcu_read_lock();
11235
11236 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11237 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11238 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11239
11240 spin_lock_bh(&rdev->beacon_registrations_lock);
11241 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11242 list) {
11243 if (reg->nlportid == notify->portid) {
11244 list_del(&reg->list);
11245 kfree(reg);
11246 break;
11247 }
11248 }
11249 spin_unlock_bh(&rdev->beacon_registrations_lock);
11250 }
11251
11252 rcu_read_unlock();
11253
11254 return NOTIFY_DONE;
11255 }
11256
11257 static struct notifier_block nl80211_netlink_notifier = {
11258 .notifier_call = nl80211_netlink_notify,
11259 };
11260
11261 void cfg80211_ft_event(struct net_device *netdev,
11262 struct cfg80211_ft_event_params *ft_event)
11263 {
11264 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11265 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11266 struct sk_buff *msg;
11267 void *hdr;
11268
11269 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11270
11271 if (!ft_event->target_ap)
11272 return;
11273
11274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11275 if (!msg)
11276 return;
11277
11278 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11279 if (!hdr) {
11280 nlmsg_free(msg);
11281 return;
11282 }
11283
11284 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11285 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11286 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11287 if (ft_event->ies)
11288 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11289 if (ft_event->ric_ies)
11290 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11291 ft_event->ric_ies);
11292
11293 genlmsg_end(msg, hdr);
11294
11295 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11296 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11297 }
11298 EXPORT_SYMBOL(cfg80211_ft_event);
11299
11300 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11301 {
11302 struct cfg80211_registered_device *rdev;
11303 struct sk_buff *msg;
11304 void *hdr;
11305 u32 nlportid;
11306
11307 rdev = wiphy_to_dev(wdev->wiphy);
11308 if (!rdev->crit_proto_nlportid)
11309 return;
11310
11311 nlportid = rdev->crit_proto_nlportid;
11312 rdev->crit_proto_nlportid = 0;
11313
11314 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11315 if (!msg)
11316 return;
11317
11318 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11319 if (!hdr)
11320 goto nla_put_failure;
11321
11322 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11323 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11324 goto nla_put_failure;
11325
11326 genlmsg_end(msg, hdr);
11327
11328 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11329 return;
11330
11331 nla_put_failure:
11332 if (hdr)
11333 genlmsg_cancel(msg, hdr);
11334 nlmsg_free(msg);
11335
11336 }
11337 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11338
11339 /* initialisation/exit functions */
11340
11341 int nl80211_init(void)
11342 {
11343 int err;
11344
11345 err = genl_register_family_with_ops(&nl80211_fam,
11346 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11347 if (err)
11348 return err;
11349
11350 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11351 if (err)
11352 goto err_out;
11353
11354 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11355 if (err)
11356 goto err_out;
11357
11358 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11359 if (err)
11360 goto err_out;
11361
11362 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11363 if (err)
11364 goto err_out;
11365
11366 #ifdef CONFIG_NL80211_TESTMODE
11367 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11368 if (err)
11369 goto err_out;
11370 #endif
11371
11372 err = netlink_register_notifier(&nl80211_netlink_notifier);
11373 if (err)
11374 goto err_out;
11375
11376 return 0;
11377 err_out:
11378 genl_unregister_family(&nl80211_fam);
11379 return err;
11380 }
11381
11382 void nl80211_exit(void)
11383 {
11384 netlink_unregister_notifier(&nl80211_netlink_notifier);
11385 genl_unregister_family(&nl80211_fam);
11386 }
Linux kernel - Deliverables
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