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[mirror_ubuntu-artful-kernel.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 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 /* the netlink family */
36 static struct genl_family nl80211_fam;
37
38 /* multicast groups */
39 enum nl80211_multicast_groups {
40 NL80211_MCGRP_CONFIG,
41 NL80211_MCGRP_SCAN,
42 NL80211_MCGRP_REGULATORY,
43 NL80211_MCGRP_MLME,
44 NL80211_MCGRP_VENDOR,
45 NL80211_MCGRP_NAN,
46 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
47 };
48
49 static const struct genl_multicast_group nl80211_mcgrps[] = {
50 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
51 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
52 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
53 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
54 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
55 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
56 #ifdef CONFIG_NL80211_TESTMODE
57 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
58 #endif
59 };
60
61 /* returns ERR_PTR values */
62 static struct wireless_dev *
63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
64 {
65 struct cfg80211_registered_device *rdev;
66 struct wireless_dev *result = NULL;
67 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
68 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
69 u64 wdev_id;
70 int wiphy_idx = -1;
71 int ifidx = -1;
72
73 ASSERT_RTNL();
74
75 if (!have_ifidx && !have_wdev_id)
76 return ERR_PTR(-EINVAL);
77
78 if (have_ifidx)
79 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
80 if (have_wdev_id) {
81 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
82 wiphy_idx = wdev_id >> 32;
83 }
84
85 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
86 struct wireless_dev *wdev;
87
88 if (wiphy_net(&rdev->wiphy) != netns)
89 continue;
90
91 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
92 continue;
93
94 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
95 if (have_ifidx && wdev->netdev &&
96 wdev->netdev->ifindex == ifidx) {
97 result = wdev;
98 break;
99 }
100 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
101 result = wdev;
102 break;
103 }
104 }
105
106 if (result)
107 break;
108 }
109
110 if (result)
111 return result;
112 return ERR_PTR(-ENODEV);
113 }
114
115 static struct cfg80211_registered_device *
116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
117 {
118 struct cfg80211_registered_device *rdev = NULL, *tmp;
119 struct net_device *netdev;
120
121 ASSERT_RTNL();
122
123 if (!attrs[NL80211_ATTR_WIPHY] &&
124 !attrs[NL80211_ATTR_IFINDEX] &&
125 !attrs[NL80211_ATTR_WDEV])
126 return ERR_PTR(-EINVAL);
127
128 if (attrs[NL80211_ATTR_WIPHY])
129 rdev = cfg80211_rdev_by_wiphy_idx(
130 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
131
132 if (attrs[NL80211_ATTR_WDEV]) {
133 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
134 struct wireless_dev *wdev;
135 bool found = false;
136
137 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
138 if (tmp) {
139 /* make sure wdev exists */
140 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
141 if (wdev->identifier != (u32)wdev_id)
142 continue;
143 found = true;
144 break;
145 }
146
147 if (!found)
148 tmp = NULL;
149
150 if (rdev && tmp != rdev)
151 return ERR_PTR(-EINVAL);
152 rdev = tmp;
153 }
154 }
155
156 if (attrs[NL80211_ATTR_IFINDEX]) {
157 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
158
159 netdev = __dev_get_by_index(netns, ifindex);
160 if (netdev) {
161 if (netdev->ieee80211_ptr)
162 tmp = wiphy_to_rdev(
163 netdev->ieee80211_ptr->wiphy);
164 else
165 tmp = NULL;
166
167 /* not wireless device -- return error */
168 if (!tmp)
169 return ERR_PTR(-EINVAL);
170
171 /* mismatch -- return error */
172 if (rdev && tmp != rdev)
173 return ERR_PTR(-EINVAL);
174
175 rdev = tmp;
176 }
177 }
178
179 if (!rdev)
180 return ERR_PTR(-ENODEV);
181
182 if (netns != wiphy_net(&rdev->wiphy))
183 return ERR_PTR(-ENODEV);
184
185 return rdev;
186 }
187
188 /*
189 * This function returns a pointer to the driver
190 * that the genl_info item that is passed refers to.
191 *
192 * The result of this can be a PTR_ERR and hence must
193 * be checked with IS_ERR() for errors.
194 */
195 static struct cfg80211_registered_device *
196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
197 {
198 return __cfg80211_rdev_from_attrs(netns, info->attrs);
199 }
200
201 /* policy for the attributes */
202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
203 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
204 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
205 .len = 20-1 },
206 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
207
208 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
209 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
210 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
211 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
212 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
213
214 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
215 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
216 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
217 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
219 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
220
221 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
222 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
223 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
224
225 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
226 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
227
228 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
229 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
230 .len = WLAN_MAX_KEY_LEN },
231 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
232 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
233 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
234 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
235 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
236
237 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
238 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
239 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
240 .len = IEEE80211_MAX_DATA_LEN },
241 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
242 .len = IEEE80211_MAX_DATA_LEN },
243 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
244 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
245 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
246 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
247 .len = NL80211_MAX_SUPP_RATES },
248 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
249 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
250 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
251 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_MESH_ID_LEN },
253 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
254
255 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
256 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
257
258 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
259 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
260 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
262 .len = NL80211_MAX_SUPP_RATES },
263 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
264
265 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
266 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
267
268 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
269
270 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
271 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
272 .len = IEEE80211_MAX_DATA_LEN },
273 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
275
276 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
277 .len = IEEE80211_MAX_SSID_LEN },
278 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
279 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
280 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
281 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
282 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
283 [NL80211_ATTR_STA_FLAGS2] = {
284 .len = sizeof(struct nl80211_sta_flag_update),
285 },
286 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
287 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
288 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
289 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
290 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
291 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
292 [NL80211_ATTR_PID] = { .type = NLA_U32 },
293 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
294 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
295 .len = WLAN_PMKID_LEN },
296 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
297 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
298 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
299 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
300 .len = IEEE80211_MAX_DATA_LEN },
301 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
302 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
303 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
304 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
305 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
306 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
307 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
308 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
309 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
310 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
311 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
312 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
313 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
314 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
315 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
317 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
318 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
319 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
320 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
321 .len = IEEE80211_MAX_DATA_LEN },
322 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
325 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
326 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
327 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
328 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
329 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
331 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
332 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
333 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
334 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
337 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
338 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
339 .len = NL80211_HT_CAPABILITY_LEN
340 },
341 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
342 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
343 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
344 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
345 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
346 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
347 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
348 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
349 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
350 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
351 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
352 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
353 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
354 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
355 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
356 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
357 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
358 .len = NL80211_VHT_CAPABILITY_LEN,
359 },
360 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
361 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
362 .len = IEEE80211_MAX_DATA_LEN },
363 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
364 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
365 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
366 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
367 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
368 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
369 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
370 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
371 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
372 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
373 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
374 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
375 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
376 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
377 .len = IEEE80211_QOS_MAP_LEN_MAX },
378 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
379 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
380 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
381 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
382 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
383 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
384 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
385 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
386 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
387 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
388 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
390 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
391 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
392 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
393 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
394 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
395 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
396 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
397 .len = VHT_MUMIMO_GROUPS_DATA_LEN
398 },
399 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
400 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
401 [NL80211_ATTR_NAN_DUAL] = { .type = NLA_U8 },
402 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
403 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
404 .len = FILS_MAX_KEK_LEN },
405 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
406 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
407 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
408 };
409
410 /* policy for the key attributes */
411 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
412 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
413 [NL80211_KEY_IDX] = { .type = NLA_U8 },
414 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
415 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
416 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
417 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
418 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
419 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
420 };
421
422 /* policy for the key default flags */
423 static const struct nla_policy
424 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
425 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
426 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
427 };
428
429 #ifdef CONFIG_PM
430 /* policy for WoWLAN attributes */
431 static const struct nla_policy
432 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
433 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
436 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
437 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
438 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
440 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
441 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
442 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
443 };
444
445 static const struct nla_policy
446 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
447 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
449 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
450 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
451 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
452 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
453 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
454 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
455 },
456 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
457 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
458 },
459 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
460 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
461 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
462 };
463 #endif /* CONFIG_PM */
464
465 /* policy for coalesce rule attributes */
466 static const struct nla_policy
467 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
468 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
469 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
470 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
471 };
472
473 /* policy for GTK rekey offload attributes */
474 static const struct nla_policy
475 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
476 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
477 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
478 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
479 };
480
481 static const struct nla_policy
482 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
483 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
484 .len = IEEE80211_MAX_SSID_LEN },
485 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
486 };
487
488 static const struct nla_policy
489 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
490 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
491 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
492 };
493
494 static const struct nla_policy
495 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
496 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
497 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
498 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
499 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
500 },
501 };
502
503 /* policy for NAN function attributes */
504 static const struct nla_policy
505 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
506 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
507 [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
508 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
509 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
510 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
511 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
512 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
513 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
514 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
515 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
516 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
517 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
518 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
519 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
520 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
521 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
522 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
523 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
524 };
525
526 /* policy for Service Response Filter attributes */
527 static const struct nla_policy
528 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
529 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
530 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
531 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
532 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
533 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
534 };
535
536 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
537 struct netlink_callback *cb,
538 struct cfg80211_registered_device **rdev,
539 struct wireless_dev **wdev)
540 {
541 int err;
542
543 rtnl_lock();
544
545 if (!cb->args[0]) {
546 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
547 genl_family_attrbuf(&nl80211_fam),
548 nl80211_fam.maxattr, nl80211_policy);
549 if (err)
550 goto out_unlock;
551
552 *wdev = __cfg80211_wdev_from_attrs(
553 sock_net(skb->sk),
554 genl_family_attrbuf(&nl80211_fam));
555 if (IS_ERR(*wdev)) {
556 err = PTR_ERR(*wdev);
557 goto out_unlock;
558 }
559 *rdev = wiphy_to_rdev((*wdev)->wiphy);
560 /* 0 is the first index - add 1 to parse only once */
561 cb->args[0] = (*rdev)->wiphy_idx + 1;
562 cb->args[1] = (*wdev)->identifier;
563 } else {
564 /* subtract the 1 again here */
565 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
566 struct wireless_dev *tmp;
567
568 if (!wiphy) {
569 err = -ENODEV;
570 goto out_unlock;
571 }
572 *rdev = wiphy_to_rdev(wiphy);
573 *wdev = NULL;
574
575 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
576 if (tmp->identifier == cb->args[1]) {
577 *wdev = tmp;
578 break;
579 }
580 }
581
582 if (!*wdev) {
583 err = -ENODEV;
584 goto out_unlock;
585 }
586 }
587
588 return 0;
589 out_unlock:
590 rtnl_unlock();
591 return err;
592 }
593
594 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
595 {
596 rtnl_unlock();
597 }
598
599 /* IE validation */
600 static bool is_valid_ie_attr(const struct nlattr *attr)
601 {
602 const u8 *pos;
603 int len;
604
605 if (!attr)
606 return true;
607
608 pos = nla_data(attr);
609 len = nla_len(attr);
610
611 while (len) {
612 u8 elemlen;
613
614 if (len < 2)
615 return false;
616 len -= 2;
617
618 elemlen = pos[1];
619 if (elemlen > len)
620 return false;
621
622 len -= elemlen;
623 pos += 2 + elemlen;
624 }
625
626 return true;
627 }
628
629 /* message building helper */
630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
631 int flags, u8 cmd)
632 {
633 /* since there is no private header just add the generic one */
634 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
635 }
636
637 static int nl80211_msg_put_channel(struct sk_buff *msg,
638 struct ieee80211_channel *chan,
639 bool large)
640 {
641 /* Some channels must be completely excluded from the
642 * list to protect old user-space tools from breaking
643 */
644 if (!large && chan->flags &
645 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
646 return 0;
647
648 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
649 chan->center_freq))
650 goto nla_put_failure;
651
652 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
653 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
654 goto nla_put_failure;
655 if (chan->flags & IEEE80211_CHAN_NO_IR) {
656 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
657 goto nla_put_failure;
658 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
659 goto nla_put_failure;
660 }
661 if (chan->flags & IEEE80211_CHAN_RADAR) {
662 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
663 goto nla_put_failure;
664 if (large) {
665 u32 time;
666
667 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
668
669 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
670 chan->dfs_state))
671 goto nla_put_failure;
672 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
673 time))
674 goto nla_put_failure;
675 if (nla_put_u32(msg,
676 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
677 chan->dfs_cac_ms))
678 goto nla_put_failure;
679 }
680 }
681
682 if (large) {
683 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
684 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
685 goto nla_put_failure;
686 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
687 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
688 goto nla_put_failure;
689 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
690 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
691 goto nla_put_failure;
692 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
694 goto nla_put_failure;
695 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
697 goto nla_put_failure;
698 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
700 goto nla_put_failure;
701 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
703 goto nla_put_failure;
704 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
706 goto nla_put_failure;
707 }
708
709 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
710 DBM_TO_MBM(chan->max_power)))
711 goto nla_put_failure;
712
713 return 0;
714
715 nla_put_failure:
716 return -ENOBUFS;
717 }
718
719 /* netlink command implementations */
720
721 struct key_parse {
722 struct key_params p;
723 int idx;
724 int type;
725 bool def, defmgmt;
726 bool def_uni, def_multi;
727 };
728
729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
730 {
731 struct nlattr *tb[NL80211_KEY_MAX + 1];
732 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
733 nl80211_key_policy);
734 if (err)
735 return err;
736
737 k->def = !!tb[NL80211_KEY_DEFAULT];
738 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
739
740 if (k->def) {
741 k->def_uni = true;
742 k->def_multi = true;
743 }
744 if (k->defmgmt)
745 k->def_multi = true;
746
747 if (tb[NL80211_KEY_IDX])
748 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
749
750 if (tb[NL80211_KEY_DATA]) {
751 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
752 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
753 }
754
755 if (tb[NL80211_KEY_SEQ]) {
756 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
757 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
758 }
759
760 if (tb[NL80211_KEY_CIPHER])
761 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
762
763 if (tb[NL80211_KEY_TYPE]) {
764 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
765 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
766 return -EINVAL;
767 }
768
769 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
770 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
771
772 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
773 tb[NL80211_KEY_DEFAULT_TYPES],
774 nl80211_key_default_policy);
775 if (err)
776 return err;
777
778 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
779 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
780 }
781
782 return 0;
783 }
784
785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
786 {
787 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
788 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
789 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
790 }
791
792 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
793 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
794 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
795 }
796
797 if (info->attrs[NL80211_ATTR_KEY_IDX])
798 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
799
800 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
801 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
802
803 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
804 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
805
806 if (k->def) {
807 k->def_uni = true;
808 k->def_multi = true;
809 }
810 if (k->defmgmt)
811 k->def_multi = true;
812
813 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
814 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
815 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
816 return -EINVAL;
817 }
818
819 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
820 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
821 int err = nla_parse_nested(
822 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
823 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
824 nl80211_key_default_policy);
825 if (err)
826 return err;
827
828 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
829 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
830 }
831
832 return 0;
833 }
834
835 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
836 {
837 int err;
838
839 memset(k, 0, sizeof(*k));
840 k->idx = -1;
841 k->type = -1;
842
843 if (info->attrs[NL80211_ATTR_KEY])
844 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
845 else
846 err = nl80211_parse_key_old(info, k);
847
848 if (err)
849 return err;
850
851 if (k->def && k->defmgmt)
852 return -EINVAL;
853
854 if (k->defmgmt) {
855 if (k->def_uni || !k->def_multi)
856 return -EINVAL;
857 }
858
859 if (k->idx != -1) {
860 if (k->defmgmt) {
861 if (k->idx < 4 || k->idx > 5)
862 return -EINVAL;
863 } else if (k->def) {
864 if (k->idx < 0 || k->idx > 3)
865 return -EINVAL;
866 } else {
867 if (k->idx < 0 || k->idx > 5)
868 return -EINVAL;
869 }
870 }
871
872 return 0;
873 }
874
875 static struct cfg80211_cached_keys *
876 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
877 struct nlattr *keys, bool *no_ht)
878 {
879 struct key_parse parse;
880 struct nlattr *key;
881 struct cfg80211_cached_keys *result;
882 int rem, err, def = 0;
883 bool have_key = false;
884
885 nla_for_each_nested(key, keys, rem) {
886 have_key = true;
887 break;
888 }
889
890 if (!have_key)
891 return NULL;
892
893 result = kzalloc(sizeof(*result), GFP_KERNEL);
894 if (!result)
895 return ERR_PTR(-ENOMEM);
896
897 result->def = -1;
898
899 nla_for_each_nested(key, keys, rem) {
900 memset(&parse, 0, sizeof(parse));
901 parse.idx = -1;
902
903 err = nl80211_parse_key_new(key, &parse);
904 if (err)
905 goto error;
906 err = -EINVAL;
907 if (!parse.p.key)
908 goto error;
909 if (parse.idx < 0 || parse.idx > 3)
910 goto error;
911 if (parse.def) {
912 if (def)
913 goto error;
914 def = 1;
915 result->def = parse.idx;
916 if (!parse.def_uni || !parse.def_multi)
917 goto error;
918 } else if (parse.defmgmt)
919 goto error;
920 err = cfg80211_validate_key_settings(rdev, &parse.p,
921 parse.idx, false, NULL);
922 if (err)
923 goto error;
924 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
925 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
926 err = -EINVAL;
927 goto error;
928 }
929 result->params[parse.idx].cipher = parse.p.cipher;
930 result->params[parse.idx].key_len = parse.p.key_len;
931 result->params[parse.idx].key = result->data[parse.idx];
932 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
933
934 /* must be WEP key if we got here */
935 if (no_ht)
936 *no_ht = true;
937 }
938
939 if (result->def < 0) {
940 err = -EINVAL;
941 goto error;
942 }
943
944 return result;
945 error:
946 kfree(result);
947 return ERR_PTR(err);
948 }
949
950 static int nl80211_key_allowed(struct wireless_dev *wdev)
951 {
952 ASSERT_WDEV_LOCK(wdev);
953
954 switch (wdev->iftype) {
955 case NL80211_IFTYPE_AP:
956 case NL80211_IFTYPE_AP_VLAN:
957 case NL80211_IFTYPE_P2P_GO:
958 case NL80211_IFTYPE_MESH_POINT:
959 break;
960 case NL80211_IFTYPE_ADHOC:
961 case NL80211_IFTYPE_STATION:
962 case NL80211_IFTYPE_P2P_CLIENT:
963 if (!wdev->current_bss)
964 return -ENOLINK;
965 break;
966 case NL80211_IFTYPE_UNSPECIFIED:
967 case NL80211_IFTYPE_OCB:
968 case NL80211_IFTYPE_MONITOR:
969 case NL80211_IFTYPE_NAN:
970 case NL80211_IFTYPE_P2P_DEVICE:
971 case NL80211_IFTYPE_WDS:
972 case NUM_NL80211_IFTYPES:
973 return -EINVAL;
974 }
975
976 return 0;
977 }
978
979 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
980 struct nlattr *tb)
981 {
982 struct ieee80211_channel *chan;
983
984 if (tb == NULL)
985 return NULL;
986 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
987 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
988 return NULL;
989 return chan;
990 }
991
992 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
993 {
994 struct nlattr *nl_modes = nla_nest_start(msg, attr);
995 int i;
996
997 if (!nl_modes)
998 goto nla_put_failure;
999
1000 i = 0;
1001 while (ifmodes) {
1002 if ((ifmodes & 1) && nla_put_flag(msg, i))
1003 goto nla_put_failure;
1004 ifmodes >>= 1;
1005 i++;
1006 }
1007
1008 nla_nest_end(msg, nl_modes);
1009 return 0;
1010
1011 nla_put_failure:
1012 return -ENOBUFS;
1013 }
1014
1015 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1016 struct sk_buff *msg,
1017 bool large)
1018 {
1019 struct nlattr *nl_combis;
1020 int i, j;
1021
1022 nl_combis = nla_nest_start(msg,
1023 NL80211_ATTR_INTERFACE_COMBINATIONS);
1024 if (!nl_combis)
1025 goto nla_put_failure;
1026
1027 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1028 const struct ieee80211_iface_combination *c;
1029 struct nlattr *nl_combi, *nl_limits;
1030
1031 c = &wiphy->iface_combinations[i];
1032
1033 nl_combi = nla_nest_start(msg, i + 1);
1034 if (!nl_combi)
1035 goto nla_put_failure;
1036
1037 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1038 if (!nl_limits)
1039 goto nla_put_failure;
1040
1041 for (j = 0; j < c->n_limits; j++) {
1042 struct nlattr *nl_limit;
1043
1044 nl_limit = nla_nest_start(msg, j + 1);
1045 if (!nl_limit)
1046 goto nla_put_failure;
1047 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1048 c->limits[j].max))
1049 goto nla_put_failure;
1050 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1051 c->limits[j].types))
1052 goto nla_put_failure;
1053 nla_nest_end(msg, nl_limit);
1054 }
1055
1056 nla_nest_end(msg, nl_limits);
1057
1058 if (c->beacon_int_infra_match &&
1059 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1060 goto nla_put_failure;
1061 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1062 c->num_different_channels) ||
1063 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1064 c->max_interfaces))
1065 goto nla_put_failure;
1066 if (large &&
1067 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1068 c->radar_detect_widths) ||
1069 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1070 c->radar_detect_regions)))
1071 goto nla_put_failure;
1072 if (c->beacon_int_min_gcd &&
1073 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1074 c->beacon_int_min_gcd))
1075 goto nla_put_failure;
1076
1077 nla_nest_end(msg, nl_combi);
1078 }
1079
1080 nla_nest_end(msg, nl_combis);
1081
1082 return 0;
1083 nla_put_failure:
1084 return -ENOBUFS;
1085 }
1086
1087 #ifdef CONFIG_PM
1088 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1089 struct sk_buff *msg)
1090 {
1091 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1092 struct nlattr *nl_tcp;
1093
1094 if (!tcp)
1095 return 0;
1096
1097 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1098 if (!nl_tcp)
1099 return -ENOBUFS;
1100
1101 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1102 tcp->data_payload_max))
1103 return -ENOBUFS;
1104
1105 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1106 tcp->data_payload_max))
1107 return -ENOBUFS;
1108
1109 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1110 return -ENOBUFS;
1111
1112 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1113 sizeof(*tcp->tok), tcp->tok))
1114 return -ENOBUFS;
1115
1116 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1117 tcp->data_interval_max))
1118 return -ENOBUFS;
1119
1120 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1121 tcp->wake_payload_max))
1122 return -ENOBUFS;
1123
1124 nla_nest_end(msg, nl_tcp);
1125 return 0;
1126 }
1127
1128 static int nl80211_send_wowlan(struct sk_buff *msg,
1129 struct cfg80211_registered_device *rdev,
1130 bool large)
1131 {
1132 struct nlattr *nl_wowlan;
1133
1134 if (!rdev->wiphy.wowlan)
1135 return 0;
1136
1137 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1138 if (!nl_wowlan)
1139 return -ENOBUFS;
1140
1141 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1142 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1143 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1144 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1145 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1146 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1147 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1148 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1149 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1150 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1151 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1152 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1153 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1154 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1155 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1156 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1157 return -ENOBUFS;
1158
1159 if (rdev->wiphy.wowlan->n_patterns) {
1160 struct nl80211_pattern_support pat = {
1161 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1162 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1163 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1164 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1165 };
1166
1167 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1168 sizeof(pat), &pat))
1169 return -ENOBUFS;
1170 }
1171
1172 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1173 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1174 rdev->wiphy.wowlan->max_nd_match_sets))
1175 return -ENOBUFS;
1176
1177 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1178 return -ENOBUFS;
1179
1180 nla_nest_end(msg, nl_wowlan);
1181
1182 return 0;
1183 }
1184 #endif
1185
1186 static int nl80211_send_coalesce(struct sk_buff *msg,
1187 struct cfg80211_registered_device *rdev)
1188 {
1189 struct nl80211_coalesce_rule_support rule;
1190
1191 if (!rdev->wiphy.coalesce)
1192 return 0;
1193
1194 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1195 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1196 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1197 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1198 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1199 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1200
1201 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1202 return -ENOBUFS;
1203
1204 return 0;
1205 }
1206
1207 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1208 struct ieee80211_supported_band *sband)
1209 {
1210 struct nlattr *nl_rates, *nl_rate;
1211 struct ieee80211_rate *rate;
1212 int i;
1213
1214 /* add HT info */
1215 if (sband->ht_cap.ht_supported &&
1216 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1217 sizeof(sband->ht_cap.mcs),
1218 &sband->ht_cap.mcs) ||
1219 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1220 sband->ht_cap.cap) ||
1221 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1222 sband->ht_cap.ampdu_factor) ||
1223 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1224 sband->ht_cap.ampdu_density)))
1225 return -ENOBUFS;
1226
1227 /* add VHT info */
1228 if (sband->vht_cap.vht_supported &&
1229 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1230 sizeof(sband->vht_cap.vht_mcs),
1231 &sband->vht_cap.vht_mcs) ||
1232 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1233 sband->vht_cap.cap)))
1234 return -ENOBUFS;
1235
1236 /* add bitrates */
1237 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1238 if (!nl_rates)
1239 return -ENOBUFS;
1240
1241 for (i = 0; i < sband->n_bitrates; i++) {
1242 nl_rate = nla_nest_start(msg, i);
1243 if (!nl_rate)
1244 return -ENOBUFS;
1245
1246 rate = &sband->bitrates[i];
1247 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1248 rate->bitrate))
1249 return -ENOBUFS;
1250 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1251 nla_put_flag(msg,
1252 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1253 return -ENOBUFS;
1254
1255 nla_nest_end(msg, nl_rate);
1256 }
1257
1258 nla_nest_end(msg, nl_rates);
1259
1260 return 0;
1261 }
1262
1263 static int
1264 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1265 const struct ieee80211_txrx_stypes *mgmt_stypes)
1266 {
1267 u16 stypes;
1268 struct nlattr *nl_ftypes, *nl_ifs;
1269 enum nl80211_iftype ift;
1270 int i;
1271
1272 if (!mgmt_stypes)
1273 return 0;
1274
1275 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1276 if (!nl_ifs)
1277 return -ENOBUFS;
1278
1279 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1280 nl_ftypes = nla_nest_start(msg, ift);
1281 if (!nl_ftypes)
1282 return -ENOBUFS;
1283 i = 0;
1284 stypes = mgmt_stypes[ift].tx;
1285 while (stypes) {
1286 if ((stypes & 1) &&
1287 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1288 (i << 4) | IEEE80211_FTYPE_MGMT))
1289 return -ENOBUFS;
1290 stypes >>= 1;
1291 i++;
1292 }
1293 nla_nest_end(msg, nl_ftypes);
1294 }
1295
1296 nla_nest_end(msg, nl_ifs);
1297
1298 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1299 if (!nl_ifs)
1300 return -ENOBUFS;
1301
1302 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1303 nl_ftypes = nla_nest_start(msg, ift);
1304 if (!nl_ftypes)
1305 return -ENOBUFS;
1306 i = 0;
1307 stypes = mgmt_stypes[ift].rx;
1308 while (stypes) {
1309 if ((stypes & 1) &&
1310 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1311 (i << 4) | IEEE80211_FTYPE_MGMT))
1312 return -ENOBUFS;
1313 stypes >>= 1;
1314 i++;
1315 }
1316 nla_nest_end(msg, nl_ftypes);
1317 }
1318 nla_nest_end(msg, nl_ifs);
1319
1320 return 0;
1321 }
1322
1323 #define CMD(op, n) \
1324 do { \
1325 if (rdev->ops->op) { \
1326 i++; \
1327 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1328 goto nla_put_failure; \
1329 } \
1330 } while (0)
1331
1332 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1333 struct sk_buff *msg)
1334 {
1335 int i = 0;
1336
1337 /*
1338 * do *NOT* add anything into this function, new things need to be
1339 * advertised only to new versions of userspace that can deal with
1340 * the split (and they can't possibly care about new features...
1341 */
1342 CMD(add_virtual_intf, NEW_INTERFACE);
1343 CMD(change_virtual_intf, SET_INTERFACE);
1344 CMD(add_key, NEW_KEY);
1345 CMD(start_ap, START_AP);
1346 CMD(add_station, NEW_STATION);
1347 CMD(add_mpath, NEW_MPATH);
1348 CMD(update_mesh_config, SET_MESH_CONFIG);
1349 CMD(change_bss, SET_BSS);
1350 CMD(auth, AUTHENTICATE);
1351 CMD(assoc, ASSOCIATE);
1352 CMD(deauth, DEAUTHENTICATE);
1353 CMD(disassoc, DISASSOCIATE);
1354 CMD(join_ibss, JOIN_IBSS);
1355 CMD(join_mesh, JOIN_MESH);
1356 CMD(set_pmksa, SET_PMKSA);
1357 CMD(del_pmksa, DEL_PMKSA);
1358 CMD(flush_pmksa, FLUSH_PMKSA);
1359 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1360 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1361 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1362 CMD(mgmt_tx, FRAME);
1363 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1364 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1365 i++;
1366 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1367 goto nla_put_failure;
1368 }
1369 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1370 rdev->ops->join_mesh) {
1371 i++;
1372 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1373 goto nla_put_failure;
1374 }
1375 CMD(set_wds_peer, SET_WDS_PEER);
1376 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1377 CMD(tdls_mgmt, TDLS_MGMT);
1378 CMD(tdls_oper, TDLS_OPER);
1379 }
1380 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1381 CMD(sched_scan_start, START_SCHED_SCAN);
1382 CMD(probe_client, PROBE_CLIENT);
1383 CMD(set_noack_map, SET_NOACK_MAP);
1384 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1385 i++;
1386 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1387 goto nla_put_failure;
1388 }
1389 CMD(start_p2p_device, START_P2P_DEVICE);
1390 CMD(set_mcast_rate, SET_MCAST_RATE);
1391 #ifdef CONFIG_NL80211_TESTMODE
1392 CMD(testmode_cmd, TESTMODE);
1393 #endif
1394
1395 if (rdev->ops->connect || rdev->ops->auth) {
1396 i++;
1397 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1398 goto nla_put_failure;
1399 }
1400
1401 if (rdev->ops->disconnect || rdev->ops->deauth) {
1402 i++;
1403 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1404 goto nla_put_failure;
1405 }
1406
1407 return i;
1408 nla_put_failure:
1409 return -ENOBUFS;
1410 }
1411
1412 struct nl80211_dump_wiphy_state {
1413 s64 filter_wiphy;
1414 long start;
1415 long split_start, band_start, chan_start, capa_start;
1416 bool split;
1417 };
1418
1419 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1420 enum nl80211_commands cmd,
1421 struct sk_buff *msg, u32 portid, u32 seq,
1422 int flags, struct nl80211_dump_wiphy_state *state)
1423 {
1424 void *hdr;
1425 struct nlattr *nl_bands, *nl_band;
1426 struct nlattr *nl_freqs, *nl_freq;
1427 struct nlattr *nl_cmds;
1428 enum nl80211_band band;
1429 struct ieee80211_channel *chan;
1430 int i;
1431 const struct ieee80211_txrx_stypes *mgmt_stypes =
1432 rdev->wiphy.mgmt_stypes;
1433 u32 features;
1434
1435 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1436 if (!hdr)
1437 return -ENOBUFS;
1438
1439 if (WARN_ON(!state))
1440 return -EINVAL;
1441
1442 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1443 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1444 wiphy_name(&rdev->wiphy)) ||
1445 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1446 cfg80211_rdev_list_generation))
1447 goto nla_put_failure;
1448
1449 if (cmd != NL80211_CMD_NEW_WIPHY)
1450 goto finish;
1451
1452 switch (state->split_start) {
1453 case 0:
1454 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1455 rdev->wiphy.retry_short) ||
1456 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1457 rdev->wiphy.retry_long) ||
1458 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1459 rdev->wiphy.frag_threshold) ||
1460 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1461 rdev->wiphy.rts_threshold) ||
1462 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1463 rdev->wiphy.coverage_class) ||
1464 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1465 rdev->wiphy.max_scan_ssids) ||
1466 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1467 rdev->wiphy.max_sched_scan_ssids) ||
1468 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1469 rdev->wiphy.max_scan_ie_len) ||
1470 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1471 rdev->wiphy.max_sched_scan_ie_len) ||
1472 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1473 rdev->wiphy.max_match_sets) ||
1474 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1475 rdev->wiphy.max_sched_scan_plans) ||
1476 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1477 rdev->wiphy.max_sched_scan_plan_interval) ||
1478 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1479 rdev->wiphy.max_sched_scan_plan_iterations))
1480 goto nla_put_failure;
1481
1482 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1483 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1484 goto nla_put_failure;
1485 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1486 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1487 goto nla_put_failure;
1488 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1489 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1490 goto nla_put_failure;
1491 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1492 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1493 goto nla_put_failure;
1494 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1495 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1496 goto nla_put_failure;
1497 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1498 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1499 goto nla_put_failure;
1500 state->split_start++;
1501 if (state->split)
1502 break;
1503 case 1:
1504 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1505 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1506 rdev->wiphy.cipher_suites))
1507 goto nla_put_failure;
1508
1509 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1510 rdev->wiphy.max_num_pmkids))
1511 goto nla_put_failure;
1512
1513 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1514 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1515 goto nla_put_failure;
1516
1517 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1518 rdev->wiphy.available_antennas_tx) ||
1519 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1520 rdev->wiphy.available_antennas_rx))
1521 goto nla_put_failure;
1522
1523 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1524 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1525 rdev->wiphy.probe_resp_offload))
1526 goto nla_put_failure;
1527
1528 if ((rdev->wiphy.available_antennas_tx ||
1529 rdev->wiphy.available_antennas_rx) &&
1530 rdev->ops->get_antenna) {
1531 u32 tx_ant = 0, rx_ant = 0;
1532 int res;
1533
1534 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1535 if (!res) {
1536 if (nla_put_u32(msg,
1537 NL80211_ATTR_WIPHY_ANTENNA_TX,
1538 tx_ant) ||
1539 nla_put_u32(msg,
1540 NL80211_ATTR_WIPHY_ANTENNA_RX,
1541 rx_ant))
1542 goto nla_put_failure;
1543 }
1544 }
1545
1546 state->split_start++;
1547 if (state->split)
1548 break;
1549 case 2:
1550 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1551 rdev->wiphy.interface_modes))
1552 goto nla_put_failure;
1553 state->split_start++;
1554 if (state->split)
1555 break;
1556 case 3:
1557 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1558 if (!nl_bands)
1559 goto nla_put_failure;
1560
1561 for (band = state->band_start;
1562 band < NUM_NL80211_BANDS; band++) {
1563 struct ieee80211_supported_band *sband;
1564
1565 sband = rdev->wiphy.bands[band];
1566
1567 if (!sband)
1568 continue;
1569
1570 nl_band = nla_nest_start(msg, band);
1571 if (!nl_band)
1572 goto nla_put_failure;
1573
1574 switch (state->chan_start) {
1575 case 0:
1576 if (nl80211_send_band_rateinfo(msg, sband))
1577 goto nla_put_failure;
1578 state->chan_start++;
1579 if (state->split)
1580 break;
1581 default:
1582 /* add frequencies */
1583 nl_freqs = nla_nest_start(
1584 msg, NL80211_BAND_ATTR_FREQS);
1585 if (!nl_freqs)
1586 goto nla_put_failure;
1587
1588 for (i = state->chan_start - 1;
1589 i < sband->n_channels;
1590 i++) {
1591 nl_freq = nla_nest_start(msg, i);
1592 if (!nl_freq)
1593 goto nla_put_failure;
1594
1595 chan = &sband->channels[i];
1596
1597 if (nl80211_msg_put_channel(
1598 msg, chan,
1599 state->split))
1600 goto nla_put_failure;
1601
1602 nla_nest_end(msg, nl_freq);
1603 if (state->split)
1604 break;
1605 }
1606 if (i < sband->n_channels)
1607 state->chan_start = i + 2;
1608 else
1609 state->chan_start = 0;
1610 nla_nest_end(msg, nl_freqs);
1611 }
1612
1613 nla_nest_end(msg, nl_band);
1614
1615 if (state->split) {
1616 /* start again here */
1617 if (state->chan_start)
1618 band--;
1619 break;
1620 }
1621 }
1622 nla_nest_end(msg, nl_bands);
1623
1624 if (band < NUM_NL80211_BANDS)
1625 state->band_start = band + 1;
1626 else
1627 state->band_start = 0;
1628
1629 /* if bands & channels are done, continue outside */
1630 if (state->band_start == 0 && state->chan_start == 0)
1631 state->split_start++;
1632 if (state->split)
1633 break;
1634 case 4:
1635 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1636 if (!nl_cmds)
1637 goto nla_put_failure;
1638
1639 i = nl80211_add_commands_unsplit(rdev, msg);
1640 if (i < 0)
1641 goto nla_put_failure;
1642 if (state->split) {
1643 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1644 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1645 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1646 CMD(channel_switch, CHANNEL_SWITCH);
1647 CMD(set_qos_map, SET_QOS_MAP);
1648 if (rdev->wiphy.features &
1649 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1650 CMD(add_tx_ts, ADD_TX_TS);
1651 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1652 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1653 }
1654 #undef CMD
1655
1656 nla_nest_end(msg, nl_cmds);
1657 state->split_start++;
1658 if (state->split)
1659 break;
1660 case 5:
1661 if (rdev->ops->remain_on_channel &&
1662 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1663 nla_put_u32(msg,
1664 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1665 rdev->wiphy.max_remain_on_channel_duration))
1666 goto nla_put_failure;
1667
1668 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1669 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1670 goto nla_put_failure;
1671
1672 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1673 goto nla_put_failure;
1674 state->split_start++;
1675 if (state->split)
1676 break;
1677 case 6:
1678 #ifdef CONFIG_PM
1679 if (nl80211_send_wowlan(msg, rdev, state->split))
1680 goto nla_put_failure;
1681 state->split_start++;
1682 if (state->split)
1683 break;
1684 #else
1685 state->split_start++;
1686 #endif
1687 case 7:
1688 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1689 rdev->wiphy.software_iftypes))
1690 goto nla_put_failure;
1691
1692 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1693 state->split))
1694 goto nla_put_failure;
1695
1696 state->split_start++;
1697 if (state->split)
1698 break;
1699 case 8:
1700 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1701 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1702 rdev->wiphy.ap_sme_capa))
1703 goto nla_put_failure;
1704
1705 features = rdev->wiphy.features;
1706 /*
1707 * We can only add the per-channel limit information if the
1708 * dump is split, otherwise it makes it too big. Therefore
1709 * only advertise it in that case.
1710 */
1711 if (state->split)
1712 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1713 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1714 goto nla_put_failure;
1715
1716 if (rdev->wiphy.ht_capa_mod_mask &&
1717 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1718 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1719 rdev->wiphy.ht_capa_mod_mask))
1720 goto nla_put_failure;
1721
1722 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1723 rdev->wiphy.max_acl_mac_addrs &&
1724 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1725 rdev->wiphy.max_acl_mac_addrs))
1726 goto nla_put_failure;
1727
1728 /*
1729 * Any information below this point is only available to
1730 * applications that can deal with it being split. This
1731 * helps ensure that newly added capabilities don't break
1732 * older tools by overrunning their buffers.
1733 *
1734 * We still increment split_start so that in the split
1735 * case we'll continue with more data in the next round,
1736 * but break unconditionally so unsplit data stops here.
1737 */
1738 state->split_start++;
1739 break;
1740 case 9:
1741 if (rdev->wiphy.extended_capabilities &&
1742 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1743 rdev->wiphy.extended_capabilities_len,
1744 rdev->wiphy.extended_capabilities) ||
1745 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1746 rdev->wiphy.extended_capabilities_len,
1747 rdev->wiphy.extended_capabilities_mask)))
1748 goto nla_put_failure;
1749
1750 if (rdev->wiphy.vht_capa_mod_mask &&
1751 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1752 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1753 rdev->wiphy.vht_capa_mod_mask))
1754 goto nla_put_failure;
1755
1756 state->split_start++;
1757 break;
1758 case 10:
1759 if (nl80211_send_coalesce(msg, rdev))
1760 goto nla_put_failure;
1761
1762 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1763 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1764 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1765 goto nla_put_failure;
1766
1767 if (rdev->wiphy.max_ap_assoc_sta &&
1768 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1769 rdev->wiphy.max_ap_assoc_sta))
1770 goto nla_put_failure;
1771
1772 state->split_start++;
1773 break;
1774 case 11:
1775 if (rdev->wiphy.n_vendor_commands) {
1776 const struct nl80211_vendor_cmd_info *info;
1777 struct nlattr *nested;
1778
1779 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1780 if (!nested)
1781 goto nla_put_failure;
1782
1783 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1784 info = &rdev->wiphy.vendor_commands[i].info;
1785 if (nla_put(msg, i + 1, sizeof(*info), info))
1786 goto nla_put_failure;
1787 }
1788 nla_nest_end(msg, nested);
1789 }
1790
1791 if (rdev->wiphy.n_vendor_events) {
1792 const struct nl80211_vendor_cmd_info *info;
1793 struct nlattr *nested;
1794
1795 nested = nla_nest_start(msg,
1796 NL80211_ATTR_VENDOR_EVENTS);
1797 if (!nested)
1798 goto nla_put_failure;
1799
1800 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1801 info = &rdev->wiphy.vendor_events[i];
1802 if (nla_put(msg, i + 1, sizeof(*info), info))
1803 goto nla_put_failure;
1804 }
1805 nla_nest_end(msg, nested);
1806 }
1807 state->split_start++;
1808 break;
1809 case 12:
1810 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1811 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1812 rdev->wiphy.max_num_csa_counters))
1813 goto nla_put_failure;
1814
1815 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1816 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1817 goto nla_put_failure;
1818
1819 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1820 sizeof(rdev->wiphy.ext_features),
1821 rdev->wiphy.ext_features))
1822 goto nla_put_failure;
1823
1824 if (rdev->wiphy.bss_select_support) {
1825 struct nlattr *nested;
1826 u32 bss_select_support = rdev->wiphy.bss_select_support;
1827
1828 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1829 if (!nested)
1830 goto nla_put_failure;
1831
1832 i = 0;
1833 while (bss_select_support) {
1834 if ((bss_select_support & 1) &&
1835 nla_put_flag(msg, i))
1836 goto nla_put_failure;
1837 i++;
1838 bss_select_support >>= 1;
1839 }
1840 nla_nest_end(msg, nested);
1841 }
1842
1843 state->split_start++;
1844 break;
1845 case 13:
1846 if (rdev->wiphy.num_iftype_ext_capab &&
1847 rdev->wiphy.iftype_ext_capab) {
1848 struct nlattr *nested_ext_capab, *nested;
1849
1850 nested = nla_nest_start(msg,
1851 NL80211_ATTR_IFTYPE_EXT_CAPA);
1852 if (!nested)
1853 goto nla_put_failure;
1854
1855 for (i = state->capa_start;
1856 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1857 const struct wiphy_iftype_ext_capab *capab;
1858
1859 capab = &rdev->wiphy.iftype_ext_capab[i];
1860
1861 nested_ext_capab = nla_nest_start(msg, i);
1862 if (!nested_ext_capab ||
1863 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1864 capab->iftype) ||
1865 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1866 capab->extended_capabilities_len,
1867 capab->extended_capabilities) ||
1868 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1869 capab->extended_capabilities_len,
1870 capab->extended_capabilities_mask))
1871 goto nla_put_failure;
1872
1873 nla_nest_end(msg, nested_ext_capab);
1874 if (state->split)
1875 break;
1876 }
1877 nla_nest_end(msg, nested);
1878 if (i < rdev->wiphy.num_iftype_ext_capab) {
1879 state->capa_start = i + 1;
1880 break;
1881 }
1882 }
1883
1884 /* done */
1885 state->split_start = 0;
1886 break;
1887 }
1888 finish:
1889 genlmsg_end(msg, hdr);
1890 return 0;
1891
1892 nla_put_failure:
1893 genlmsg_cancel(msg, hdr);
1894 return -EMSGSIZE;
1895 }
1896
1897 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1898 struct netlink_callback *cb,
1899 struct nl80211_dump_wiphy_state *state)
1900 {
1901 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1902 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1903 tb, nl80211_fam.maxattr, nl80211_policy);
1904 /* ignore parse errors for backward compatibility */
1905 if (ret)
1906 return 0;
1907
1908 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1909 if (tb[NL80211_ATTR_WIPHY])
1910 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1911 if (tb[NL80211_ATTR_WDEV])
1912 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1913 if (tb[NL80211_ATTR_IFINDEX]) {
1914 struct net_device *netdev;
1915 struct cfg80211_registered_device *rdev;
1916 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1917
1918 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1919 if (!netdev)
1920 return -ENODEV;
1921 if (netdev->ieee80211_ptr) {
1922 rdev = wiphy_to_rdev(
1923 netdev->ieee80211_ptr->wiphy);
1924 state->filter_wiphy = rdev->wiphy_idx;
1925 }
1926 }
1927
1928 return 0;
1929 }
1930
1931 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1932 {
1933 int idx = 0, ret;
1934 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1935 struct cfg80211_registered_device *rdev;
1936
1937 rtnl_lock();
1938 if (!state) {
1939 state = kzalloc(sizeof(*state), GFP_KERNEL);
1940 if (!state) {
1941 rtnl_unlock();
1942 return -ENOMEM;
1943 }
1944 state->filter_wiphy = -1;
1945 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1946 if (ret) {
1947 kfree(state);
1948 rtnl_unlock();
1949 return ret;
1950 }
1951 cb->args[0] = (long)state;
1952 }
1953
1954 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1955 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1956 continue;
1957 if (++idx <= state->start)
1958 continue;
1959 if (state->filter_wiphy != -1 &&
1960 state->filter_wiphy != rdev->wiphy_idx)
1961 continue;
1962 /* attempt to fit multiple wiphy data chunks into the skb */
1963 do {
1964 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1965 skb,
1966 NETLINK_CB(cb->skb).portid,
1967 cb->nlh->nlmsg_seq,
1968 NLM_F_MULTI, state);
1969 if (ret < 0) {
1970 /*
1971 * If sending the wiphy data didn't fit (ENOBUFS
1972 * or EMSGSIZE returned), this SKB is still
1973 * empty (so it's not too big because another
1974 * wiphy dataset is already in the skb) and
1975 * we've not tried to adjust the dump allocation
1976 * yet ... then adjust the alloc size to be
1977 * bigger, and return 1 but with the empty skb.
1978 * This results in an empty message being RX'ed
1979 * in userspace, but that is ignored.
1980 *
1981 * We can then retry with the larger buffer.
1982 */
1983 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1984 !skb->len && !state->split &&
1985 cb->min_dump_alloc < 4096) {
1986 cb->min_dump_alloc = 4096;
1987 state->split_start = 0;
1988 rtnl_unlock();
1989 return 1;
1990 }
1991 idx--;
1992 break;
1993 }
1994 } while (state->split_start > 0);
1995 break;
1996 }
1997 rtnl_unlock();
1998
1999 state->start = idx;
2000
2001 return skb->len;
2002 }
2003
2004 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2005 {
2006 kfree((void *)cb->args[0]);
2007 return 0;
2008 }
2009
2010 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2011 {
2012 struct sk_buff *msg;
2013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014 struct nl80211_dump_wiphy_state state = {};
2015
2016 msg = nlmsg_new(4096, GFP_KERNEL);
2017 if (!msg)
2018 return -ENOMEM;
2019
2020 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2021 info->snd_portid, info->snd_seq, 0,
2022 &state) < 0) {
2023 nlmsg_free(msg);
2024 return -ENOBUFS;
2025 }
2026
2027 return genlmsg_reply(msg, info);
2028 }
2029
2030 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2031 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2032 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2033 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2034 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2035 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2036 };
2037
2038 static int parse_txq_params(struct nlattr *tb[],
2039 struct ieee80211_txq_params *txq_params)
2040 {
2041 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2042 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2043 !tb[NL80211_TXQ_ATTR_AIFS])
2044 return -EINVAL;
2045
2046 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2047 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2048 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2049 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2050 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2051
2052 if (txq_params->ac >= NL80211_NUM_ACS)
2053 return -EINVAL;
2054
2055 return 0;
2056 }
2057
2058 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2059 {
2060 /*
2061 * You can only set the channel explicitly for WDS interfaces,
2062 * all others have their channel managed via their respective
2063 * "establish a connection" command (connect, join, ...)
2064 *
2065 * For AP/GO and mesh mode, the channel can be set with the
2066 * channel userspace API, but is only stored and passed to the
2067 * low-level driver when the AP starts or the mesh is joined.
2068 * This is for backward compatibility, userspace can also give
2069 * the channel in the start-ap or join-mesh commands instead.
2070 *
2071 * Monitors are special as they are normally slaved to
2072 * whatever else is going on, so they have their own special
2073 * operation to set the monitor channel if possible.
2074 */
2075 return !wdev ||
2076 wdev->iftype == NL80211_IFTYPE_AP ||
2077 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2078 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2079 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2080 }
2081
2082 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2083 struct genl_info *info,
2084 struct cfg80211_chan_def *chandef)
2085 {
2086 u32 control_freq;
2087
2088 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2089 return -EINVAL;
2090
2091 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2092
2093 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2094 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2095 chandef->center_freq1 = control_freq;
2096 chandef->center_freq2 = 0;
2097
2098 /* Primary channel not allowed */
2099 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2100 return -EINVAL;
2101
2102 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2103 enum nl80211_channel_type chantype;
2104
2105 chantype = nla_get_u32(
2106 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2107
2108 switch (chantype) {
2109 case NL80211_CHAN_NO_HT:
2110 case NL80211_CHAN_HT20:
2111 case NL80211_CHAN_HT40PLUS:
2112 case NL80211_CHAN_HT40MINUS:
2113 cfg80211_chandef_create(chandef, chandef->chan,
2114 chantype);
2115 break;
2116 default:
2117 return -EINVAL;
2118 }
2119 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2120 chandef->width =
2121 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2122 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2123 chandef->center_freq1 =
2124 nla_get_u32(
2125 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2126 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2127 chandef->center_freq2 =
2128 nla_get_u32(
2129 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2130 }
2131
2132 if (!cfg80211_chandef_valid(chandef))
2133 return -EINVAL;
2134
2135 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2136 IEEE80211_CHAN_DISABLED))
2137 return -EINVAL;
2138
2139 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2140 chandef->width == NL80211_CHAN_WIDTH_10) &&
2141 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2142 return -EINVAL;
2143
2144 return 0;
2145 }
2146
2147 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2148 struct net_device *dev,
2149 struct genl_info *info)
2150 {
2151 struct cfg80211_chan_def chandef;
2152 int result;
2153 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2154 struct wireless_dev *wdev = NULL;
2155
2156 if (dev)
2157 wdev = dev->ieee80211_ptr;
2158 if (!nl80211_can_set_dev_channel(wdev))
2159 return -EOPNOTSUPP;
2160 if (wdev)
2161 iftype = wdev->iftype;
2162
2163 result = nl80211_parse_chandef(rdev, info, &chandef);
2164 if (result)
2165 return result;
2166
2167 switch (iftype) {
2168 case NL80211_IFTYPE_AP:
2169 case NL80211_IFTYPE_P2P_GO:
2170 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2171 iftype)) {
2172 result = -EINVAL;
2173 break;
2174 }
2175 if (wdev->beacon_interval) {
2176 if (!dev || !rdev->ops->set_ap_chanwidth ||
2177 !(rdev->wiphy.features &
2178 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2179 result = -EBUSY;
2180 break;
2181 }
2182
2183 /* Only allow dynamic channel width changes */
2184 if (chandef.chan != wdev->preset_chandef.chan) {
2185 result = -EBUSY;
2186 break;
2187 }
2188 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2189 if (result)
2190 break;
2191 }
2192 wdev->preset_chandef = chandef;
2193 result = 0;
2194 break;
2195 case NL80211_IFTYPE_MESH_POINT:
2196 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2197 break;
2198 case NL80211_IFTYPE_MONITOR:
2199 result = cfg80211_set_monitor_channel(rdev, &chandef);
2200 break;
2201 default:
2202 result = -EINVAL;
2203 }
2204
2205 return result;
2206 }
2207
2208 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2209 {
2210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2211 struct net_device *netdev = info->user_ptr[1];
2212
2213 return __nl80211_set_channel(rdev, netdev, info);
2214 }
2215
2216 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2217 {
2218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2219 struct net_device *dev = info->user_ptr[1];
2220 struct wireless_dev *wdev = dev->ieee80211_ptr;
2221 const u8 *bssid;
2222
2223 if (!info->attrs[NL80211_ATTR_MAC])
2224 return -EINVAL;
2225
2226 if (netif_running(dev))
2227 return -EBUSY;
2228
2229 if (!rdev->ops->set_wds_peer)
2230 return -EOPNOTSUPP;
2231
2232 if (wdev->iftype != NL80211_IFTYPE_WDS)
2233 return -EOPNOTSUPP;
2234
2235 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236 return rdev_set_wds_peer(rdev, dev, bssid);
2237 }
2238
2239 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2240 {
2241 struct cfg80211_registered_device *rdev;
2242 struct net_device *netdev = NULL;
2243 struct wireless_dev *wdev;
2244 int result = 0, rem_txq_params = 0;
2245 struct nlattr *nl_txq_params;
2246 u32 changed;
2247 u8 retry_short = 0, retry_long = 0;
2248 u32 frag_threshold = 0, rts_threshold = 0;
2249 u8 coverage_class = 0;
2250
2251 ASSERT_RTNL();
2252
2253 /*
2254 * Try to find the wiphy and netdev. Normally this
2255 * function shouldn't need the netdev, but this is
2256 * done for backward compatibility -- previously
2257 * setting the channel was done per wiphy, but now
2258 * it is per netdev. Previous userland like hostapd
2259 * also passed a netdev to set_wiphy, so that it is
2260 * possible to let that go to the right netdev!
2261 */
2262
2263 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2264 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2265
2266 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2267 if (netdev && netdev->ieee80211_ptr)
2268 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2269 else
2270 netdev = NULL;
2271 }
2272
2273 if (!netdev) {
2274 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2275 info->attrs);
2276 if (IS_ERR(rdev))
2277 return PTR_ERR(rdev);
2278 wdev = NULL;
2279 netdev = NULL;
2280 result = 0;
2281 } else
2282 wdev = netdev->ieee80211_ptr;
2283
2284 /*
2285 * end workaround code, by now the rdev is available
2286 * and locked, and wdev may or may not be NULL.
2287 */
2288
2289 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2290 result = cfg80211_dev_rename(
2291 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2292
2293 if (result)
2294 return result;
2295
2296 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2297 struct ieee80211_txq_params txq_params;
2298 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2299
2300 if (!rdev->ops->set_txq_params)
2301 return -EOPNOTSUPP;
2302
2303 if (!netdev)
2304 return -EINVAL;
2305
2306 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2307 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2308 return -EINVAL;
2309
2310 if (!netif_running(netdev))
2311 return -ENETDOWN;
2312
2313 nla_for_each_nested(nl_txq_params,
2314 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2315 rem_txq_params) {
2316 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2317 nl_txq_params,
2318 txq_params_policy);
2319 if (result)
2320 return result;
2321 result = parse_txq_params(tb, &txq_params);
2322 if (result)
2323 return result;
2324
2325 result = rdev_set_txq_params(rdev, netdev,
2326 &txq_params);
2327 if (result)
2328 return result;
2329 }
2330 }
2331
2332 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2333 result = __nl80211_set_channel(
2334 rdev,
2335 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2336 info);
2337 if (result)
2338 return result;
2339 }
2340
2341 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2342 struct wireless_dev *txp_wdev = wdev;
2343 enum nl80211_tx_power_setting type;
2344 int idx, mbm = 0;
2345
2346 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2347 txp_wdev = NULL;
2348
2349 if (!rdev->ops->set_tx_power)
2350 return -EOPNOTSUPP;
2351
2352 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2353 type = nla_get_u32(info->attrs[idx]);
2354
2355 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2356 (type != NL80211_TX_POWER_AUTOMATIC))
2357 return -EINVAL;
2358
2359 if (type != NL80211_TX_POWER_AUTOMATIC) {
2360 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2361 mbm = nla_get_u32(info->attrs[idx]);
2362 }
2363
2364 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2365 if (result)
2366 return result;
2367 }
2368
2369 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2370 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2371 u32 tx_ant, rx_ant;
2372
2373 if ((!rdev->wiphy.available_antennas_tx &&
2374 !rdev->wiphy.available_antennas_rx) ||
2375 !rdev->ops->set_antenna)
2376 return -EOPNOTSUPP;
2377
2378 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2379 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2380
2381 /* reject antenna configurations which don't match the
2382 * available antenna masks, except for the "all" mask */
2383 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2384 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2385 return -EINVAL;
2386
2387 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2388 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2389
2390 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2391 if (result)
2392 return result;
2393 }
2394
2395 changed = 0;
2396
2397 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2398 retry_short = nla_get_u8(
2399 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2400 if (retry_short == 0)
2401 return -EINVAL;
2402
2403 changed |= WIPHY_PARAM_RETRY_SHORT;
2404 }
2405
2406 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2407 retry_long = nla_get_u8(
2408 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2409 if (retry_long == 0)
2410 return -EINVAL;
2411
2412 changed |= WIPHY_PARAM_RETRY_LONG;
2413 }
2414
2415 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2416 frag_threshold = nla_get_u32(
2417 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2418 if (frag_threshold < 256)
2419 return -EINVAL;
2420
2421 if (frag_threshold != (u32) -1) {
2422 /*
2423 * Fragments (apart from the last one) are required to
2424 * have even length. Make the fragmentation code
2425 * simpler by stripping LSB should someone try to use
2426 * odd threshold value.
2427 */
2428 frag_threshold &= ~0x1;
2429 }
2430 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2431 }
2432
2433 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2434 rts_threshold = nla_get_u32(
2435 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2436 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2437 }
2438
2439 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2440 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2441 return -EINVAL;
2442
2443 coverage_class = nla_get_u8(
2444 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2445 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2446 }
2447
2448 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2449 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2450 return -EOPNOTSUPP;
2451
2452 changed |= WIPHY_PARAM_DYN_ACK;
2453 }
2454
2455 if (changed) {
2456 u8 old_retry_short, old_retry_long;
2457 u32 old_frag_threshold, old_rts_threshold;
2458 u8 old_coverage_class;
2459
2460 if (!rdev->ops->set_wiphy_params)
2461 return -EOPNOTSUPP;
2462
2463 old_retry_short = rdev->wiphy.retry_short;
2464 old_retry_long = rdev->wiphy.retry_long;
2465 old_frag_threshold = rdev->wiphy.frag_threshold;
2466 old_rts_threshold = rdev->wiphy.rts_threshold;
2467 old_coverage_class = rdev->wiphy.coverage_class;
2468
2469 if (changed & WIPHY_PARAM_RETRY_SHORT)
2470 rdev->wiphy.retry_short = retry_short;
2471 if (changed & WIPHY_PARAM_RETRY_LONG)
2472 rdev->wiphy.retry_long = retry_long;
2473 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2474 rdev->wiphy.frag_threshold = frag_threshold;
2475 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2476 rdev->wiphy.rts_threshold = rts_threshold;
2477 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2478 rdev->wiphy.coverage_class = coverage_class;
2479
2480 result = rdev_set_wiphy_params(rdev, changed);
2481 if (result) {
2482 rdev->wiphy.retry_short = old_retry_short;
2483 rdev->wiphy.retry_long = old_retry_long;
2484 rdev->wiphy.frag_threshold = old_frag_threshold;
2485 rdev->wiphy.rts_threshold = old_rts_threshold;
2486 rdev->wiphy.coverage_class = old_coverage_class;
2487 return result;
2488 }
2489 }
2490 return 0;
2491 }
2492
2493 static inline u64 wdev_id(struct wireless_dev *wdev)
2494 {
2495 return (u64)wdev->identifier |
2496 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2497 }
2498
2499 static int nl80211_send_chandef(struct sk_buff *msg,
2500 const struct cfg80211_chan_def *chandef)
2501 {
2502 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2503 return -EINVAL;
2504
2505 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2506 chandef->chan->center_freq))
2507 return -ENOBUFS;
2508 switch (chandef->width) {
2509 case NL80211_CHAN_WIDTH_20_NOHT:
2510 case NL80211_CHAN_WIDTH_20:
2511 case NL80211_CHAN_WIDTH_40:
2512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2513 cfg80211_get_chandef_type(chandef)))
2514 return -ENOBUFS;
2515 break;
2516 default:
2517 break;
2518 }
2519 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2520 return -ENOBUFS;
2521 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2522 return -ENOBUFS;
2523 if (chandef->center_freq2 &&
2524 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2525 return -ENOBUFS;
2526 return 0;
2527 }
2528
2529 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2530 struct cfg80211_registered_device *rdev,
2531 struct wireless_dev *wdev, bool removal)
2532 {
2533 struct net_device *dev = wdev->netdev;
2534 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2535 void *hdr;
2536
2537 if (removal)
2538 cmd = NL80211_CMD_DEL_INTERFACE;
2539
2540 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2541 if (!hdr)
2542 return -1;
2543
2544 if (dev &&
2545 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2546 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2547 goto nla_put_failure;
2548
2549 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2550 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2551 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2552 NL80211_ATTR_PAD) ||
2553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2554 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2555 rdev->devlist_generation ^
2556 (cfg80211_rdev_list_generation << 2)))
2557 goto nla_put_failure;
2558
2559 if (rdev->ops->get_channel) {
2560 int ret;
2561 struct cfg80211_chan_def chandef;
2562
2563 ret = rdev_get_channel(rdev, wdev, &chandef);
2564 if (ret == 0) {
2565 if (nl80211_send_chandef(msg, &chandef))
2566 goto nla_put_failure;
2567 }
2568 }
2569
2570 if (rdev->ops->get_tx_power) {
2571 int dbm, ret;
2572
2573 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2574 if (ret == 0 &&
2575 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2576 DBM_TO_MBM(dbm)))
2577 goto nla_put_failure;
2578 }
2579
2580 if (wdev->ssid_len) {
2581 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2582 goto nla_put_failure;
2583 }
2584
2585 genlmsg_end(msg, hdr);
2586 return 0;
2587
2588 nla_put_failure:
2589 genlmsg_cancel(msg, hdr);
2590 return -EMSGSIZE;
2591 }
2592
2593 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2594 {
2595 int wp_idx = 0;
2596 int if_idx = 0;
2597 int wp_start = cb->args[0];
2598 int if_start = cb->args[1];
2599 int filter_wiphy = -1;
2600 struct cfg80211_registered_device *rdev;
2601 struct wireless_dev *wdev;
2602
2603 rtnl_lock();
2604 if (!cb->args[2]) {
2605 struct nl80211_dump_wiphy_state state = {
2606 .filter_wiphy = -1,
2607 };
2608 int ret;
2609
2610 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2611 if (ret)
2612 return ret;
2613
2614 filter_wiphy = state.filter_wiphy;
2615
2616 /*
2617 * if filtering, set cb->args[2] to +1 since 0 is the default
2618 * value needed to determine that parsing is necessary.
2619 */
2620 if (filter_wiphy >= 0)
2621 cb->args[2] = filter_wiphy + 1;
2622 else
2623 cb->args[2] = -1;
2624 } else if (cb->args[2] > 0) {
2625 filter_wiphy = cb->args[2] - 1;
2626 }
2627
2628 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2629 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2630 continue;
2631 if (wp_idx < wp_start) {
2632 wp_idx++;
2633 continue;
2634 }
2635
2636 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2637 continue;
2638
2639 if_idx = 0;
2640
2641 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2642 if (if_idx < if_start) {
2643 if_idx++;
2644 continue;
2645 }
2646 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2647 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2648 rdev, wdev, false) < 0) {
2649 goto out;
2650 }
2651 if_idx++;
2652 }
2653
2654 wp_idx++;
2655 }
2656 out:
2657 rtnl_unlock();
2658
2659 cb->args[0] = wp_idx;
2660 cb->args[1] = if_idx;
2661
2662 return skb->len;
2663 }
2664
2665 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667 struct sk_buff *msg;
2668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669 struct wireless_dev *wdev = info->user_ptr[1];
2670
2671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 if (!msg)
2673 return -ENOMEM;
2674
2675 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2676 rdev, wdev, false) < 0) {
2677 nlmsg_free(msg);
2678 return -ENOBUFS;
2679 }
2680
2681 return genlmsg_reply(msg, info);
2682 }
2683
2684 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2685 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2686 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2687 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2688 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2689 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2690 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2691 };
2692
2693 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2694 {
2695 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2696 int flag;
2697
2698 *mntrflags = 0;
2699
2700 if (!nla)
2701 return -EINVAL;
2702
2703 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2704 nla, mntr_flags_policy))
2705 return -EINVAL;
2706
2707 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2708 if (flags[flag])
2709 *mntrflags |= (1<<flag);
2710
2711 return 0;
2712 }
2713
2714 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2715 struct net_device *netdev, u8 use_4addr,
2716 enum nl80211_iftype iftype)
2717 {
2718 if (!use_4addr) {
2719 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2720 return -EBUSY;
2721 return 0;
2722 }
2723
2724 switch (iftype) {
2725 case NL80211_IFTYPE_AP_VLAN:
2726 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2727 return 0;
2728 break;
2729 case NL80211_IFTYPE_STATION:
2730 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2731 return 0;
2732 break;
2733 default:
2734 break;
2735 }
2736
2737 return -EOPNOTSUPP;
2738 }
2739
2740 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743 struct vif_params params;
2744 int err;
2745 enum nl80211_iftype otype, ntype;
2746 struct net_device *dev = info->user_ptr[1];
2747 u32 _flags, *flags = NULL;
2748 bool change = false;
2749
2750 memset(&params, 0, sizeof(params));
2751
2752 otype = ntype = dev->ieee80211_ptr->iftype;
2753
2754 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2755 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2756 if (otype != ntype)
2757 change = true;
2758 if (ntype > NL80211_IFTYPE_MAX)
2759 return -EINVAL;
2760 }
2761
2762 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2763 struct wireless_dev *wdev = dev->ieee80211_ptr;
2764
2765 if (ntype != NL80211_IFTYPE_MESH_POINT)
2766 return -EINVAL;
2767 if (netif_running(dev))
2768 return -EBUSY;
2769
2770 wdev_lock(wdev);
2771 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2772 IEEE80211_MAX_MESH_ID_LEN);
2773 wdev->mesh_id_up_len =
2774 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2775 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2776 wdev->mesh_id_up_len);
2777 wdev_unlock(wdev);
2778 }
2779
2780 if (info->attrs[NL80211_ATTR_4ADDR]) {
2781 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2782 change = true;
2783 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2784 if (err)
2785 return err;
2786 } else {
2787 params.use_4addr = -1;
2788 }
2789
2790 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2791 if (ntype != NL80211_IFTYPE_MONITOR)
2792 return -EINVAL;
2793 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2794 &_flags);
2795 if (err)
2796 return err;
2797
2798 flags = &_flags;
2799 change = true;
2800 }
2801
2802 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2803 const u8 *mumimo_groups;
2804 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2805
2806 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2807 return -EOPNOTSUPP;
2808
2809 mumimo_groups =
2810 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2811
2812 /* bits 0 and 63 are reserved and must be zero */
2813 if ((mumimo_groups[0] & BIT(7)) ||
2814 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2815 return -EINVAL;
2816
2817 memcpy(params.vht_mumimo_groups, mumimo_groups,
2818 VHT_MUMIMO_GROUPS_DATA_LEN);
2819 change = true;
2820 }
2821
2822 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824
2825 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826 return -EOPNOTSUPP;
2827
2828 nla_memcpy(params.macaddr,
2829 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2830 ETH_ALEN);
2831 change = true;
2832 }
2833
2834 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2835 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2836 return -EOPNOTSUPP;
2837
2838 if (change)
2839 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2840 else
2841 err = 0;
2842
2843 if (!err && params.use_4addr != -1)
2844 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2845
2846 return err;
2847 }
2848
2849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2850 {
2851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2852 struct vif_params params;
2853 struct wireless_dev *wdev;
2854 struct sk_buff *msg;
2855 int err;
2856 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2857 u32 flags;
2858
2859 /* to avoid failing a new interface creation due to pending removal */
2860 cfg80211_destroy_ifaces(rdev);
2861
2862 memset(&params, 0, sizeof(params));
2863
2864 if (!info->attrs[NL80211_ATTR_IFNAME])
2865 return -EINVAL;
2866
2867 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2868 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2869 if (type > NL80211_IFTYPE_MAX)
2870 return -EINVAL;
2871 }
2872
2873 if (!rdev->ops->add_virtual_intf ||
2874 !(rdev->wiphy.interface_modes & (1 << type)))
2875 return -EOPNOTSUPP;
2876
2877 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2878 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2879 info->attrs[NL80211_ATTR_MAC]) {
2880 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2881 ETH_ALEN);
2882 if (!is_valid_ether_addr(params.macaddr))
2883 return -EADDRNOTAVAIL;
2884 }
2885
2886 if (info->attrs[NL80211_ATTR_4ADDR]) {
2887 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2888 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2889 if (err)
2890 return err;
2891 }
2892
2893 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2894 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2895 &flags);
2896
2897 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2898 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2899 return -EOPNOTSUPP;
2900
2901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2902 if (!msg)
2903 return -ENOMEM;
2904
2905 wdev = rdev_add_virtual_intf(rdev,
2906 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2907 NET_NAME_USER, type, err ? NULL : &flags,
2908 &params);
2909 if (WARN_ON(!wdev)) {
2910 nlmsg_free(msg);
2911 return -EPROTO;
2912 } else if (IS_ERR(wdev)) {
2913 nlmsg_free(msg);
2914 return PTR_ERR(wdev);
2915 }
2916
2917 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2918 wdev->owner_nlportid = info->snd_portid;
2919
2920 switch (type) {
2921 case NL80211_IFTYPE_MESH_POINT:
2922 if (!info->attrs[NL80211_ATTR_MESH_ID])
2923 break;
2924 wdev_lock(wdev);
2925 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2926 IEEE80211_MAX_MESH_ID_LEN);
2927 wdev->mesh_id_up_len =
2928 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2929 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2930 wdev->mesh_id_up_len);
2931 wdev_unlock(wdev);
2932 break;
2933 case NL80211_IFTYPE_NAN:
2934 case NL80211_IFTYPE_P2P_DEVICE:
2935 /*
2936 * P2P Device and NAN do not have a netdev, so don't go
2937 * through the netdev notifier and must be added here
2938 */
2939 mutex_init(&wdev->mtx);
2940 INIT_LIST_HEAD(&wdev->event_list);
2941 spin_lock_init(&wdev->event_lock);
2942 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2943 spin_lock_init(&wdev->mgmt_registrations_lock);
2944
2945 wdev->identifier = ++rdev->wdev_id;
2946 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2947 rdev->devlist_generation++;
2948 break;
2949 default:
2950 break;
2951 }
2952
2953 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2954 rdev, wdev, false) < 0) {
2955 nlmsg_free(msg);
2956 return -ENOBUFS;
2957 }
2958
2959 /*
2960 * For wdevs which have no associated netdev object (e.g. of type
2961 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2962 * For all other types, the event will be generated from the
2963 * netdev notifier
2964 */
2965 if (!wdev->netdev)
2966 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2967
2968 return genlmsg_reply(msg, info);
2969 }
2970
2971 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2972 {
2973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2974 struct wireless_dev *wdev = info->user_ptr[1];
2975
2976 if (!rdev->ops->del_virtual_intf)
2977 return -EOPNOTSUPP;
2978
2979 /*
2980 * If we remove a wireless device without a netdev then clear
2981 * user_ptr[1] so that nl80211_post_doit won't dereference it
2982 * to check if it needs to do dev_put(). Otherwise it crashes
2983 * since the wdev has been freed, unlike with a netdev where
2984 * we need the dev_put() for the netdev to really be freed.
2985 */
2986 if (!wdev->netdev)
2987 info->user_ptr[1] = NULL;
2988
2989 return rdev_del_virtual_intf(rdev, wdev);
2990 }
2991
2992 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2993 {
2994 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2995 struct net_device *dev = info->user_ptr[1];
2996 u16 noack_map;
2997
2998 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2999 return -EINVAL;
3000
3001 if (!rdev->ops->set_noack_map)
3002 return -EOPNOTSUPP;
3003
3004 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3005
3006 return rdev_set_noack_map(rdev, dev, noack_map);
3007 }
3008
3009 struct get_key_cookie {
3010 struct sk_buff *msg;
3011 int error;
3012 int idx;
3013 };
3014
3015 static void get_key_callback(void *c, struct key_params *params)
3016 {
3017 struct nlattr *key;
3018 struct get_key_cookie *cookie = c;
3019
3020 if ((params->key &&
3021 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3022 params->key_len, params->key)) ||
3023 (params->seq &&
3024 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3025 params->seq_len, params->seq)) ||
3026 (params->cipher &&
3027 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3028 params->cipher)))
3029 goto nla_put_failure;
3030
3031 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3032 if (!key)
3033 goto nla_put_failure;
3034
3035 if ((params->key &&
3036 nla_put(cookie->msg, NL80211_KEY_DATA,
3037 params->key_len, params->key)) ||
3038 (params->seq &&
3039 nla_put(cookie->msg, NL80211_KEY_SEQ,
3040 params->seq_len, params->seq)) ||
3041 (params->cipher &&
3042 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3043 params->cipher)))
3044 goto nla_put_failure;
3045
3046 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3047 goto nla_put_failure;
3048
3049 nla_nest_end(cookie->msg, key);
3050
3051 return;
3052 nla_put_failure:
3053 cookie->error = 1;
3054 }
3055
3056 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3057 {
3058 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3059 int err;
3060 struct net_device *dev = info->user_ptr[1];
3061 u8 key_idx = 0;
3062 const u8 *mac_addr = NULL;
3063 bool pairwise;
3064 struct get_key_cookie cookie = {
3065 .error = 0,
3066 };
3067 void *hdr;
3068 struct sk_buff *msg;
3069
3070 if (info->attrs[NL80211_ATTR_KEY_IDX])
3071 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3072
3073 if (key_idx > 5)
3074 return -EINVAL;
3075
3076 if (info->attrs[NL80211_ATTR_MAC])
3077 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078
3079 pairwise = !!mac_addr;
3080 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3081 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3082
3083 if (kt >= NUM_NL80211_KEYTYPES)
3084 return -EINVAL;
3085 if (kt != NL80211_KEYTYPE_GROUP &&
3086 kt != NL80211_KEYTYPE_PAIRWISE)
3087 return -EINVAL;
3088 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3089 }
3090
3091 if (!rdev->ops->get_key)
3092 return -EOPNOTSUPP;
3093
3094 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095 return -ENOENT;
3096
3097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3098 if (!msg)
3099 return -ENOMEM;
3100
3101 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3102 NL80211_CMD_NEW_KEY);
3103 if (!hdr)
3104 goto nla_put_failure;
3105
3106 cookie.msg = msg;
3107 cookie.idx = key_idx;
3108
3109 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3110 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3111 goto nla_put_failure;
3112 if (mac_addr &&
3113 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3114 goto nla_put_failure;
3115
3116 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3117 get_key_callback);
3118
3119 if (err)
3120 goto free_msg;
3121
3122 if (cookie.error)
3123 goto nla_put_failure;
3124
3125 genlmsg_end(msg, hdr);
3126 return genlmsg_reply(msg, info);
3127
3128 nla_put_failure:
3129 err = -ENOBUFS;
3130 free_msg:
3131 nlmsg_free(msg);
3132 return err;
3133 }
3134
3135 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3136 {
3137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3138 struct key_parse key;
3139 int err;
3140 struct net_device *dev = info->user_ptr[1];
3141
3142 err = nl80211_parse_key(info, &key);
3143 if (err)
3144 return err;
3145
3146 if (key.idx < 0)
3147 return -EINVAL;
3148
3149 /* only support setting default key */
3150 if (!key.def && !key.defmgmt)
3151 return -EINVAL;
3152
3153 wdev_lock(dev->ieee80211_ptr);
3154
3155 if (key.def) {
3156 if (!rdev->ops->set_default_key) {
3157 err = -EOPNOTSUPP;
3158 goto out;
3159 }
3160
3161 err = nl80211_key_allowed(dev->ieee80211_ptr);
3162 if (err)
3163 goto out;
3164
3165 err = rdev_set_default_key(rdev, dev, key.idx,
3166 key.def_uni, key.def_multi);
3167
3168 if (err)
3169 goto out;
3170
3171 #ifdef CONFIG_CFG80211_WEXT
3172 dev->ieee80211_ptr->wext.default_key = key.idx;
3173 #endif
3174 } else {
3175 if (key.def_uni || !key.def_multi) {
3176 err = -EINVAL;
3177 goto out;
3178 }
3179
3180 if (!rdev->ops->set_default_mgmt_key) {
3181 err = -EOPNOTSUPP;
3182 goto out;
3183 }
3184
3185 err = nl80211_key_allowed(dev->ieee80211_ptr);
3186 if (err)
3187 goto out;
3188
3189 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3190 if (err)
3191 goto out;
3192
3193 #ifdef CONFIG_CFG80211_WEXT
3194 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3195 #endif
3196 }
3197
3198 out:
3199 wdev_unlock(dev->ieee80211_ptr);
3200
3201 return err;
3202 }
3203
3204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3205 {
3206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3207 int err;
3208 struct net_device *dev = info->user_ptr[1];
3209 struct key_parse key;
3210 const u8 *mac_addr = NULL;
3211
3212 err = nl80211_parse_key(info, &key);
3213 if (err)
3214 return err;
3215
3216 if (!key.p.key)
3217 return -EINVAL;
3218
3219 if (info->attrs[NL80211_ATTR_MAC])
3220 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3221
3222 if (key.type == -1) {
3223 if (mac_addr)
3224 key.type = NL80211_KEYTYPE_PAIRWISE;
3225 else
3226 key.type = NL80211_KEYTYPE_GROUP;
3227 }
3228
3229 /* for now */
3230 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3231 key.type != NL80211_KEYTYPE_GROUP)
3232 return -EINVAL;
3233
3234 if (!rdev->ops->add_key)
3235 return -EOPNOTSUPP;
3236
3237 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3238 key.type == NL80211_KEYTYPE_PAIRWISE,
3239 mac_addr))
3240 return -EINVAL;
3241
3242 wdev_lock(dev->ieee80211_ptr);
3243 err = nl80211_key_allowed(dev->ieee80211_ptr);
3244 if (!err)
3245 err = rdev_add_key(rdev, dev, key.idx,
3246 key.type == NL80211_KEYTYPE_PAIRWISE,
3247 mac_addr, &key.p);
3248 wdev_unlock(dev->ieee80211_ptr);
3249
3250 return err;
3251 }
3252
3253 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3254 {
3255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256 int err;
3257 struct net_device *dev = info->user_ptr[1];
3258 u8 *mac_addr = NULL;
3259 struct key_parse key;
3260
3261 err = nl80211_parse_key(info, &key);
3262 if (err)
3263 return err;
3264
3265 if (info->attrs[NL80211_ATTR_MAC])
3266 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3267
3268 if (key.type == -1) {
3269 if (mac_addr)
3270 key.type = NL80211_KEYTYPE_PAIRWISE;
3271 else
3272 key.type = NL80211_KEYTYPE_GROUP;
3273 }
3274
3275 /* for now */
3276 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3277 key.type != NL80211_KEYTYPE_GROUP)
3278 return -EINVAL;
3279
3280 if (!rdev->ops->del_key)
3281 return -EOPNOTSUPP;
3282
3283 wdev_lock(dev->ieee80211_ptr);
3284 err = nl80211_key_allowed(dev->ieee80211_ptr);
3285
3286 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3287 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3288 err = -ENOENT;
3289
3290 if (!err)
3291 err = rdev_del_key(rdev, dev, key.idx,
3292 key.type == NL80211_KEYTYPE_PAIRWISE,
3293 mac_addr);
3294
3295 #ifdef CONFIG_CFG80211_WEXT
3296 if (!err) {
3297 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3298 dev->ieee80211_ptr->wext.default_key = -1;
3299 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3300 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3301 }
3302 #endif
3303 wdev_unlock(dev->ieee80211_ptr);
3304
3305 return err;
3306 }
3307
3308 /* This function returns an error or the number of nested attributes */
3309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3310 {
3311 struct nlattr *attr;
3312 int n_entries = 0, tmp;
3313
3314 nla_for_each_nested(attr, nl_attr, tmp) {
3315 if (nla_len(attr) != ETH_ALEN)
3316 return -EINVAL;
3317
3318 n_entries++;
3319 }
3320
3321 return n_entries;
3322 }
3323
3324 /*
3325 * This function parses ACL information and allocates memory for ACL data.
3326 * On successful return, the calling function is responsible to free the
3327 * ACL buffer returned by this function.
3328 */
3329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3330 struct genl_info *info)
3331 {
3332 enum nl80211_acl_policy acl_policy;
3333 struct nlattr *attr;
3334 struct cfg80211_acl_data *acl;
3335 int i = 0, n_entries, tmp;
3336
3337 if (!wiphy->max_acl_mac_addrs)
3338 return ERR_PTR(-EOPNOTSUPP);
3339
3340 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3341 return ERR_PTR(-EINVAL);
3342
3343 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3344 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3345 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3346 return ERR_PTR(-EINVAL);
3347
3348 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3349 return ERR_PTR(-EINVAL);
3350
3351 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3352 if (n_entries < 0)
3353 return ERR_PTR(n_entries);
3354
3355 if (n_entries > wiphy->max_acl_mac_addrs)
3356 return ERR_PTR(-ENOTSUPP);
3357
3358 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3359 GFP_KERNEL);
3360 if (!acl)
3361 return ERR_PTR(-ENOMEM);
3362
3363 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3364 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3365 i++;
3366 }
3367
3368 acl->n_acl_entries = n_entries;
3369 acl->acl_policy = acl_policy;
3370
3371 return acl;
3372 }
3373
3374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3375 {
3376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377 struct net_device *dev = info->user_ptr[1];
3378 struct cfg80211_acl_data *acl;
3379 int err;
3380
3381 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3382 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3383 return -EOPNOTSUPP;
3384
3385 if (!dev->ieee80211_ptr->beacon_interval)
3386 return -EINVAL;
3387
3388 acl = parse_acl_data(&rdev->wiphy, info);
3389 if (IS_ERR(acl))
3390 return PTR_ERR(acl);
3391
3392 err = rdev_set_mac_acl(rdev, dev, acl);
3393
3394 kfree(acl);
3395
3396 return err;
3397 }
3398
3399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3400 u8 *rates, u8 rates_len)
3401 {
3402 u8 i;
3403 u32 mask = 0;
3404
3405 for (i = 0; i < rates_len; i++) {
3406 int rate = (rates[i] & 0x7f) * 5;
3407 int ridx;
3408
3409 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3410 struct ieee80211_rate *srate =
3411 &sband->bitrates[ridx];
3412 if (rate == srate->bitrate) {
3413 mask |= 1 << ridx;
3414 break;
3415 }
3416 }
3417 if (ridx == sband->n_bitrates)
3418 return 0; /* rate not found */
3419 }
3420
3421 return mask;
3422 }
3423
3424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3425 u8 *rates, u8 rates_len,
3426 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3427 {
3428 u8 i;
3429
3430 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3431
3432 for (i = 0; i < rates_len; i++) {
3433 int ridx, rbit;
3434
3435 ridx = rates[i] / 8;
3436 rbit = BIT(rates[i] % 8);
3437
3438 /* check validity */
3439 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3440 return false;
3441
3442 /* check availability */
3443 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3444 mcs[ridx] |= rbit;
3445 else
3446 return false;
3447 }
3448
3449 return true;
3450 }
3451
3452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3453 {
3454 u16 mcs_mask = 0;
3455
3456 switch (vht_mcs_map) {
3457 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3458 break;
3459 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3460 mcs_mask = 0x00FF;
3461 break;
3462 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3463 mcs_mask = 0x01FF;
3464 break;
3465 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3466 mcs_mask = 0x03FF;
3467 break;
3468 default:
3469 break;
3470 }
3471
3472 return mcs_mask;
3473 }
3474
3475 static void vht_build_mcs_mask(u16 vht_mcs_map,
3476 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3477 {
3478 u8 nss;
3479
3480 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3481 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3482 vht_mcs_map >>= 2;
3483 }
3484 }
3485
3486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3487 struct nl80211_txrate_vht *txrate,
3488 u16 mcs[NL80211_VHT_NSS_MAX])
3489 {
3490 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3491 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3492 u8 i;
3493
3494 if (!sband->vht_cap.vht_supported)
3495 return false;
3496
3497 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3498
3499 /* Build vht_mcs_mask from VHT capabilities */
3500 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3501
3502 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3503 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3504 mcs[i] = txrate->mcs[i];
3505 else
3506 return false;
3507 }
3508
3509 return true;
3510 }
3511
3512 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3513 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3514 .len = NL80211_MAX_SUPP_RATES },
3515 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3516 .len = NL80211_MAX_SUPP_HT_RATES },
3517 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3518 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3519 };
3520
3521 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3522 struct cfg80211_bitrate_mask *mask)
3523 {
3524 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526 int rem, i;
3527 struct nlattr *tx_rates;
3528 struct ieee80211_supported_band *sband;
3529 u16 vht_tx_mcs_map;
3530
3531 memset(mask, 0, sizeof(*mask));
3532 /* Default to all rates enabled */
3533 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3534 sband = rdev->wiphy.bands[i];
3535
3536 if (!sband)
3537 continue;
3538
3539 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3540 memcpy(mask->control[i].ht_mcs,
3541 sband->ht_cap.mcs.rx_mask,
3542 sizeof(mask->control[i].ht_mcs));
3543
3544 if (!sband->vht_cap.vht_supported)
3545 continue;
3546
3547 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3548 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3549 }
3550
3551 /* if no rates are given set it back to the defaults */
3552 if (!info->attrs[NL80211_ATTR_TX_RATES])
3553 goto out;
3554
3555 /* The nested attribute uses enum nl80211_band as the index. This maps
3556 * directly to the enum nl80211_band values used in cfg80211.
3557 */
3558 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3559 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3560 enum nl80211_band band = nla_type(tx_rates);
3561 int err;
3562
3563 if (band < 0 || band >= NUM_NL80211_BANDS)
3564 return -EINVAL;
3565 sband = rdev->wiphy.bands[band];
3566 if (sband == NULL)
3567 return -EINVAL;
3568 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3569 nl80211_txattr_policy);
3570 if (err)
3571 return err;
3572 if (tb[NL80211_TXRATE_LEGACY]) {
3573 mask->control[band].legacy = rateset_to_mask(
3574 sband,
3575 nla_data(tb[NL80211_TXRATE_LEGACY]),
3576 nla_len(tb[NL80211_TXRATE_LEGACY]));
3577 if ((mask->control[band].legacy == 0) &&
3578 nla_len(tb[NL80211_TXRATE_LEGACY]))
3579 return -EINVAL;
3580 }
3581 if (tb[NL80211_TXRATE_HT]) {
3582 if (!ht_rateset_to_mask(
3583 sband,
3584 nla_data(tb[NL80211_TXRATE_HT]),
3585 nla_len(tb[NL80211_TXRATE_HT]),
3586 mask->control[band].ht_mcs))
3587 return -EINVAL;
3588 }
3589 if (tb[NL80211_TXRATE_VHT]) {
3590 if (!vht_set_mcs_mask(
3591 sband,
3592 nla_data(tb[NL80211_TXRATE_VHT]),
3593 mask->control[band].vht_mcs))
3594 return -EINVAL;
3595 }
3596 if (tb[NL80211_TXRATE_GI]) {
3597 mask->control[band].gi =
3598 nla_get_u8(tb[NL80211_TXRATE_GI]);
3599 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3600 return -EINVAL;
3601 }
3602
3603 if (mask->control[band].legacy == 0) {
3604 /* don't allow empty legacy rates if HT or VHT
3605 * are not even supported.
3606 */
3607 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3608 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3609 return -EINVAL;
3610
3611 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3612 if (mask->control[band].ht_mcs[i])
3613 goto out;
3614
3615 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3616 if (mask->control[band].vht_mcs[i])
3617 goto out;
3618
3619 /* legacy and mcs rates may not be both empty */
3620 return -EINVAL;
3621 }
3622 }
3623
3624 out:
3625 return 0;
3626 }
3627
3628 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3629 enum nl80211_band band,
3630 struct cfg80211_bitrate_mask *beacon_rate)
3631 {
3632 u32 count_ht, count_vht, i;
3633 u32 rate = beacon_rate->control[band].legacy;
3634
3635 /* Allow only one rate */
3636 if (hweight32(rate) > 1)
3637 return -EINVAL;
3638
3639 count_ht = 0;
3640 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3641 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3642 return -EINVAL;
3643 } else if (beacon_rate->control[band].ht_mcs[i]) {
3644 count_ht++;
3645 if (count_ht > 1)
3646 return -EINVAL;
3647 }
3648 if (count_ht && rate)
3649 return -EINVAL;
3650 }
3651
3652 count_vht = 0;
3653 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3654 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3655 return -EINVAL;
3656 } else if (beacon_rate->control[band].vht_mcs[i]) {
3657 count_vht++;
3658 if (count_vht > 1)
3659 return -EINVAL;
3660 }
3661 if (count_vht && rate)
3662 return -EINVAL;
3663 }
3664
3665 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3666 return -EINVAL;
3667
3668 if (rate &&
3669 !wiphy_ext_feature_isset(&rdev->wiphy,
3670 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3671 return -EINVAL;
3672 if (count_ht &&
3673 !wiphy_ext_feature_isset(&rdev->wiphy,
3674 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3675 return -EINVAL;
3676 if (count_vht &&
3677 !wiphy_ext_feature_isset(&rdev->wiphy,
3678 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3679 return -EINVAL;
3680
3681 return 0;
3682 }
3683
3684 static int nl80211_parse_beacon(struct nlattr *attrs[],
3685 struct cfg80211_beacon_data *bcn)
3686 {
3687 bool haveinfo = false;
3688
3689 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3690 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3691 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3692 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3693 return -EINVAL;
3694
3695 memset(bcn, 0, sizeof(*bcn));
3696
3697 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3698 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3699 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3700 if (!bcn->head_len)
3701 return -EINVAL;
3702 haveinfo = true;
3703 }
3704
3705 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3706 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3707 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3708 haveinfo = true;
3709 }
3710
3711 if (!haveinfo)
3712 return -EINVAL;
3713
3714 if (attrs[NL80211_ATTR_IE]) {
3715 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3716 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3717 }
3718
3719 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3720 bcn->proberesp_ies =
3721 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3722 bcn->proberesp_ies_len =
3723 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3724 }
3725
3726 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3727 bcn->assocresp_ies =
3728 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3729 bcn->assocresp_ies_len =
3730 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3731 }
3732
3733 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3734 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3735 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3736 }
3737
3738 return 0;
3739 }
3740
3741 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3742 struct cfg80211_ap_settings *params)
3743 {
3744 struct wireless_dev *wdev;
3745 bool ret = false;
3746
3747 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3748 if (wdev->iftype != NL80211_IFTYPE_AP &&
3749 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3750 continue;
3751
3752 if (!wdev->preset_chandef.chan)
3753 continue;
3754
3755 params->chandef = wdev->preset_chandef;
3756 ret = true;
3757 break;
3758 }
3759
3760 return ret;
3761 }
3762
3763 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3764 enum nl80211_auth_type auth_type,
3765 enum nl80211_commands cmd)
3766 {
3767 if (auth_type > NL80211_AUTHTYPE_MAX)
3768 return false;
3769
3770 switch (cmd) {
3771 case NL80211_CMD_AUTHENTICATE:
3772 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3773 auth_type == NL80211_AUTHTYPE_SAE)
3774 return false;
3775 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3776 NL80211_EXT_FEATURE_FILS_STA) &&
3777 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3778 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3779 auth_type == NL80211_AUTHTYPE_FILS_PK))
3780 return false;
3781 return true;
3782 case NL80211_CMD_CONNECT:
3783 case NL80211_CMD_START_AP:
3784 /* SAE not supported yet */
3785 if (auth_type == NL80211_AUTHTYPE_SAE)
3786 return false;
3787 /* FILS not supported yet */
3788 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3789 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3790 auth_type == NL80211_AUTHTYPE_FILS_PK)
3791 return false;
3792 return true;
3793 default:
3794 return false;
3795 }
3796 }
3797
3798 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3799 {
3800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3801 struct net_device *dev = info->user_ptr[1];
3802 struct wireless_dev *wdev = dev->ieee80211_ptr;
3803 struct cfg80211_ap_settings params;
3804 int err;
3805
3806 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3807 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3808 return -EOPNOTSUPP;
3809
3810 if (!rdev->ops->start_ap)
3811 return -EOPNOTSUPP;
3812
3813 if (wdev->beacon_interval)
3814 return -EALREADY;
3815
3816 memset(&params, 0, sizeof(params));
3817
3818 /* these are required for START_AP */
3819 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3820 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3821 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3822 return -EINVAL;
3823
3824 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3825 if (err)
3826 return err;
3827
3828 params.beacon_interval =
3829 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3830 params.dtim_period =
3831 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3832
3833 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3834 params.beacon_interval);
3835 if (err)
3836 return err;
3837
3838 /*
3839 * In theory, some of these attributes should be required here
3840 * but since they were not used when the command was originally
3841 * added, keep them optional for old user space programs to let
3842 * them continue to work with drivers that do not need the
3843 * additional information -- drivers must check!
3844 */
3845 if (info->attrs[NL80211_ATTR_SSID]) {
3846 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847 params.ssid_len =
3848 nla_len(info->attrs[NL80211_ATTR_SSID]);
3849 if (params.ssid_len == 0 ||
3850 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3851 return -EINVAL;
3852 }
3853
3854 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3855 params.hidden_ssid = nla_get_u32(
3856 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3857 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3858 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3859 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3860 return -EINVAL;
3861 }
3862
3863 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3864
3865 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3866 params.auth_type = nla_get_u32(
3867 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3868 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3869 NL80211_CMD_START_AP))
3870 return -EINVAL;
3871 } else
3872 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3873
3874 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3875 NL80211_MAX_NR_CIPHER_SUITES);
3876 if (err)
3877 return err;
3878
3879 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3880 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3881 return -EOPNOTSUPP;
3882 params.inactivity_timeout = nla_get_u16(
3883 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3884 }
3885
3886 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888 return -EINVAL;
3889 params.p2p_ctwindow =
3890 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3891 if (params.p2p_ctwindow > 127)
3892 return -EINVAL;
3893 if (params.p2p_ctwindow != 0 &&
3894 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3895 return -EINVAL;
3896 }
3897
3898 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3899 u8 tmp;
3900
3901 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902 return -EINVAL;
3903 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3904 if (tmp > 1)
3905 return -EINVAL;
3906 params.p2p_opp_ps = tmp;
3907 if (params.p2p_opp_ps != 0 &&
3908 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3909 return -EINVAL;
3910 }
3911
3912 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3913 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3914 if (err)
3915 return err;
3916 } else if (wdev->preset_chandef.chan) {
3917 params.chandef = wdev->preset_chandef;
3918 } else if (!nl80211_get_ap_channel(rdev, &params))
3919 return -EINVAL;
3920
3921 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3922 wdev->iftype))
3923 return -EINVAL;
3924
3925 if (info->attrs[NL80211_ATTR_TX_RATES]) {
3926 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3927 if (err)
3928 return err;
3929
3930 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3931 &params.beacon_rate);
3932 if (err)
3933 return err;
3934 }
3935
3936 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3937 params.smps_mode =
3938 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3939 switch (params.smps_mode) {
3940 case NL80211_SMPS_OFF:
3941 break;
3942 case NL80211_SMPS_STATIC:
3943 if (!(rdev->wiphy.features &
3944 NL80211_FEATURE_STATIC_SMPS))
3945 return -EINVAL;
3946 break;
3947 case NL80211_SMPS_DYNAMIC:
3948 if (!(rdev->wiphy.features &
3949 NL80211_FEATURE_DYNAMIC_SMPS))
3950 return -EINVAL;
3951 break;
3952 default:
3953 return -EINVAL;
3954 }
3955 } else {
3956 params.smps_mode = NL80211_SMPS_OFF;
3957 }
3958
3959 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3960 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3961 return -EOPNOTSUPP;
3962
3963 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3964 params.acl = parse_acl_data(&rdev->wiphy, info);
3965 if (IS_ERR(params.acl))
3966 return PTR_ERR(params.acl);
3967 }
3968
3969 wdev_lock(wdev);
3970 err = rdev_start_ap(rdev, dev, &params);
3971 if (!err) {
3972 wdev->preset_chandef = params.chandef;
3973 wdev->beacon_interval = params.beacon_interval;
3974 wdev->chandef = params.chandef;
3975 wdev->ssid_len = params.ssid_len;
3976 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3977 }
3978 wdev_unlock(wdev);
3979
3980 kfree(params.acl);
3981
3982 return err;
3983 }
3984
3985 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3986 {
3987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988 struct net_device *dev = info->user_ptr[1];
3989 struct wireless_dev *wdev = dev->ieee80211_ptr;
3990 struct cfg80211_beacon_data params;
3991 int err;
3992
3993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3994 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3995 return -EOPNOTSUPP;
3996
3997 if (!rdev->ops->change_beacon)
3998 return -EOPNOTSUPP;
3999
4000 if (!wdev->beacon_interval)
4001 return -EINVAL;
4002
4003 err = nl80211_parse_beacon(info->attrs, &params);
4004 if (err)
4005 return err;
4006
4007 wdev_lock(wdev);
4008 err = rdev_change_beacon(rdev, dev, &params);
4009 wdev_unlock(wdev);
4010
4011 return err;
4012 }
4013
4014 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4015 {
4016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017 struct net_device *dev = info->user_ptr[1];
4018
4019 return cfg80211_stop_ap(rdev, dev, false);
4020 }
4021
4022 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4023 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4024 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4025 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4026 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4027 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4028 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4029 };
4030
4031 static int parse_station_flags(struct genl_info *info,
4032 enum nl80211_iftype iftype,
4033 struct station_parameters *params)
4034 {
4035 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4036 struct nlattr *nla;
4037 int flag;
4038
4039 /*
4040 * Try parsing the new attribute first so userspace
4041 * can specify both for older kernels.
4042 */
4043 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4044 if (nla) {
4045 struct nl80211_sta_flag_update *sta_flags;
4046
4047 sta_flags = nla_data(nla);
4048 params->sta_flags_mask = sta_flags->mask;
4049 params->sta_flags_set = sta_flags->set;
4050 params->sta_flags_set &= params->sta_flags_mask;
4051 if ((params->sta_flags_mask |
4052 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4053 return -EINVAL;
4054 return 0;
4055 }
4056
4057 /* if present, parse the old attribute */
4058
4059 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4060 if (!nla)
4061 return 0;
4062
4063 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4064 nla, sta_flags_policy))
4065 return -EINVAL;
4066
4067 /*
4068 * Only allow certain flags for interface types so that
4069 * other attributes are silently ignored. Remember that
4070 * this is backward compatibility code with old userspace
4071 * and shouldn't be hit in other cases anyway.
4072 */
4073 switch (iftype) {
4074 case NL80211_IFTYPE_AP:
4075 case NL80211_IFTYPE_AP_VLAN:
4076 case NL80211_IFTYPE_P2P_GO:
4077 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4078 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4079 BIT(NL80211_STA_FLAG_WME) |
4080 BIT(NL80211_STA_FLAG_MFP);
4081 break;
4082 case NL80211_IFTYPE_P2P_CLIENT:
4083 case NL80211_IFTYPE_STATION:
4084 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085 BIT(NL80211_STA_FLAG_TDLS_PEER);
4086 break;
4087 case NL80211_IFTYPE_MESH_POINT:
4088 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4089 BIT(NL80211_STA_FLAG_MFP) |
4090 BIT(NL80211_STA_FLAG_AUTHORIZED);
4091 default:
4092 return -EINVAL;
4093 }
4094
4095 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4096 if (flags[flag]) {
4097 params->sta_flags_set |= (1<<flag);
4098
4099 /* no longer support new API additions in old API */
4100 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4101 return -EINVAL;
4102 }
4103 }
4104
4105 return 0;
4106 }
4107
4108 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4109 int attr)
4110 {
4111 struct nlattr *rate;
4112 u32 bitrate;
4113 u16 bitrate_compat;
4114 enum nl80211_attrs rate_flg;
4115
4116 rate = nla_nest_start(msg, attr);
4117 if (!rate)
4118 return false;
4119
4120 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4121 bitrate = cfg80211_calculate_bitrate(info);
4122 /* report 16-bit bitrate only if we can */
4123 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4124 if (bitrate > 0 &&
4125 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4126 return false;
4127 if (bitrate_compat > 0 &&
4128 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4129 return false;
4130
4131 switch (info->bw) {
4132 case RATE_INFO_BW_5:
4133 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4134 break;
4135 case RATE_INFO_BW_10:
4136 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4137 break;
4138 default:
4139 WARN_ON(1);
4140 /* fall through */
4141 case RATE_INFO_BW_20:
4142 rate_flg = 0;
4143 break;
4144 case RATE_INFO_BW_40:
4145 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4146 break;
4147 case RATE_INFO_BW_80:
4148 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4149 break;
4150 case RATE_INFO_BW_160:
4151 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4152 break;
4153 }
4154
4155 if (rate_flg && nla_put_flag(msg, rate_flg))
4156 return false;
4157
4158 if (info->flags & RATE_INFO_FLAGS_MCS) {
4159 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4160 return false;
4161 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4162 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4163 return false;
4164 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4165 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4166 return false;
4167 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4168 return false;
4169 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4170 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4171 return false;
4172 }
4173
4174 nla_nest_end(msg, rate);
4175 return true;
4176 }
4177
4178 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4179 int id)
4180 {
4181 void *attr;
4182 int i = 0;
4183
4184 if (!mask)
4185 return true;
4186
4187 attr = nla_nest_start(msg, id);
4188 if (!attr)
4189 return false;
4190
4191 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4192 if (!(mask & BIT(i)))
4193 continue;
4194
4195 if (nla_put_u8(msg, i, signal[i]))
4196 return false;
4197 }
4198
4199 nla_nest_end(msg, attr);
4200
4201 return true;
4202 }
4203
4204 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4205 u32 seq, int flags,
4206 struct cfg80211_registered_device *rdev,
4207 struct net_device *dev,
4208 const u8 *mac_addr, struct station_info *sinfo)
4209 {
4210 void *hdr;
4211 struct nlattr *sinfoattr, *bss_param;
4212
4213 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4214 if (!hdr)
4215 return -1;
4216
4217 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4218 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4219 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4220 goto nla_put_failure;
4221
4222 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4223 if (!sinfoattr)
4224 goto nla_put_failure;
4225
4226 #define PUT_SINFO(attr, memb, type) do { \
4227 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4228 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4229 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4230 sinfo->memb)) \
4231 goto nla_put_failure; \
4232 } while (0)
4233 #define PUT_SINFO_U64(attr, memb) do { \
4234 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4235 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4236 sinfo->memb, NL80211_STA_INFO_PAD)) \
4237 goto nla_put_failure; \
4238 } while (0)
4239
4240 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4241 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4242
4243 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4244 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4245 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4246 (u32)sinfo->rx_bytes))
4247 goto nla_put_failure;
4248
4249 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4250 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4251 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4252 (u32)sinfo->tx_bytes))
4253 goto nla_put_failure;
4254
4255 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4256 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4257 PUT_SINFO(LLID, llid, u16);
4258 PUT_SINFO(PLID, plid, u16);
4259 PUT_SINFO(PLINK_STATE, plink_state, u8);
4260 PUT_SINFO_U64(RX_DURATION, rx_duration);
4261
4262 switch (rdev->wiphy.signal_type) {
4263 case CFG80211_SIGNAL_TYPE_MBM:
4264 PUT_SINFO(SIGNAL, signal, u8);
4265 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4266 break;
4267 default:
4268 break;
4269 }
4270 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4271 if (!nl80211_put_signal(msg, sinfo->chains,
4272 sinfo->chain_signal,
4273 NL80211_STA_INFO_CHAIN_SIGNAL))
4274 goto nla_put_failure;
4275 }
4276 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4277 if (!nl80211_put_signal(msg, sinfo->chains,
4278 sinfo->chain_signal_avg,
4279 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4280 goto nla_put_failure;
4281 }
4282 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4283 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4284 NL80211_STA_INFO_TX_BITRATE))
4285 goto nla_put_failure;
4286 }
4287 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4288 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4289 NL80211_STA_INFO_RX_BITRATE))
4290 goto nla_put_failure;
4291 }
4292
4293 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4294 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4295 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4296 PUT_SINFO(TX_FAILED, tx_failed, u32);
4297 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4298 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4299 PUT_SINFO(LOCAL_PM, local_pm, u32);
4300 PUT_SINFO(PEER_PM, peer_pm, u32);
4301 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4302
4303 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4304 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4305 if (!bss_param)
4306 goto nla_put_failure;
4307
4308 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4309 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4310 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4311 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4312 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4313 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4314 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4315 sinfo->bss_param.dtim_period) ||
4316 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4317 sinfo->bss_param.beacon_interval))
4318 goto nla_put_failure;
4319
4320 nla_nest_end(msg, bss_param);
4321 }
4322 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4323 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4324 sizeof(struct nl80211_sta_flag_update),
4325 &sinfo->sta_flags))
4326 goto nla_put_failure;
4327
4328 PUT_SINFO_U64(T_OFFSET, t_offset);
4329 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4330 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4331 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4332
4333 #undef PUT_SINFO
4334 #undef PUT_SINFO_U64
4335
4336 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4337 struct nlattr *tidsattr;
4338 int tid;
4339
4340 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4341 if (!tidsattr)
4342 goto nla_put_failure;
4343
4344 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4345 struct cfg80211_tid_stats *tidstats;
4346 struct nlattr *tidattr;
4347
4348 tidstats = &sinfo->pertid[tid];
4349
4350 if (!tidstats->filled)
4351 continue;
4352
4353 tidattr = nla_nest_start(msg, tid + 1);
4354 if (!tidattr)
4355 goto nla_put_failure;
4356
4357 #define PUT_TIDVAL_U64(attr, memb) do { \
4358 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4359 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4360 tidstats->memb, NL80211_TID_STATS_PAD)) \
4361 goto nla_put_failure; \
4362 } while (0)
4363
4364 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4365 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4366 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4367 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4368
4369 #undef PUT_TIDVAL_U64
4370 nla_nest_end(msg, tidattr);
4371 }
4372
4373 nla_nest_end(msg, tidsattr);
4374 }
4375
4376 nla_nest_end(msg, sinfoattr);
4377
4378 if (sinfo->assoc_req_ies_len &&
4379 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4380 sinfo->assoc_req_ies))
4381 goto nla_put_failure;
4382
4383 genlmsg_end(msg, hdr);
4384 return 0;
4385
4386 nla_put_failure:
4387 genlmsg_cancel(msg, hdr);
4388 return -EMSGSIZE;
4389 }
4390
4391 static int nl80211_dump_station(struct sk_buff *skb,
4392 struct netlink_callback *cb)
4393 {
4394 struct station_info sinfo;
4395 struct cfg80211_registered_device *rdev;
4396 struct wireless_dev *wdev;
4397 u8 mac_addr[ETH_ALEN];
4398 int sta_idx = cb->args[2];
4399 int err;
4400
4401 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4402 if (err)
4403 return err;
4404
4405 if (!wdev->netdev) {
4406 err = -EINVAL;
4407 goto out_err;
4408 }
4409
4410 if (!rdev->ops->dump_station) {
4411 err = -EOPNOTSUPP;
4412 goto out_err;
4413 }
4414
4415 while (1) {
4416 memset(&sinfo, 0, sizeof(sinfo));
4417 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4418 mac_addr, &sinfo);
4419 if (err == -ENOENT)
4420 break;
4421 if (err)
4422 goto out_err;
4423
4424 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4425 NETLINK_CB(cb->skb).portid,
4426 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4427 rdev, wdev->netdev, mac_addr,
4428 &sinfo) < 0)
4429 goto out;
4430
4431 sta_idx++;
4432 }
4433
4434 out:
4435 cb->args[2] = sta_idx;
4436 err = skb->len;
4437 out_err:
4438 nl80211_finish_wdev_dump(rdev);
4439
4440 return err;
4441 }
4442
4443 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4444 {
4445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446 struct net_device *dev = info->user_ptr[1];
4447 struct station_info sinfo;
4448 struct sk_buff *msg;
4449 u8 *mac_addr = NULL;
4450 int err;
4451
4452 memset(&sinfo, 0, sizeof(sinfo));
4453
4454 if (!info->attrs[NL80211_ATTR_MAC])
4455 return -EINVAL;
4456
4457 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458
4459 if (!rdev->ops->get_station)
4460 return -EOPNOTSUPP;
4461
4462 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4463 if (err)
4464 return err;
4465
4466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4467 if (!msg)
4468 return -ENOMEM;
4469
4470 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4471 info->snd_portid, info->snd_seq, 0,
4472 rdev, dev, mac_addr, &sinfo) < 0) {
4473 nlmsg_free(msg);
4474 return -ENOBUFS;
4475 }
4476
4477 return genlmsg_reply(msg, info);
4478 }
4479
4480 int cfg80211_check_station_change(struct wiphy *wiphy,
4481 struct station_parameters *params,
4482 enum cfg80211_station_type statype)
4483 {
4484 if (params->listen_interval != -1 &&
4485 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4486 return -EINVAL;
4487
4488 if (params->support_p2p_ps != -1 &&
4489 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4490 return -EINVAL;
4491
4492 if (params->aid &&
4493 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4494 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495 return -EINVAL;
4496
4497 /* When you run into this, adjust the code below for the new flag */
4498 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4499
4500 switch (statype) {
4501 case CFG80211_STA_MESH_PEER_KERNEL:
4502 case CFG80211_STA_MESH_PEER_USER:
4503 /*
4504 * No ignoring the TDLS flag here -- the userspace mesh
4505 * code doesn't have the bug of including TDLS in the
4506 * mask everywhere.
4507 */
4508 if (params->sta_flags_mask &
4509 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510 BIT(NL80211_STA_FLAG_MFP) |
4511 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4512 return -EINVAL;
4513 break;
4514 case CFG80211_STA_TDLS_PEER_SETUP:
4515 case CFG80211_STA_TDLS_PEER_ACTIVE:
4516 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4517 return -EINVAL;
4518 /* ignore since it can't change */
4519 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4520 break;
4521 default:
4522 /* disallow mesh-specific things */
4523 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4524 return -EINVAL;
4525 if (params->local_pm)
4526 return -EINVAL;
4527 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4528 return -EINVAL;
4529 }
4530
4531 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4533 /* TDLS can't be set, ... */
4534 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4535 return -EINVAL;
4536 /*
4537 * ... but don't bother the driver with it. This works around
4538 * a hostapd/wpa_supplicant issue -- it always includes the
4539 * TLDS_PEER flag in the mask even for AP mode.
4540 */
4541 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4542 }
4543
4544 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4545 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546 /* reject other things that can't change */
4547 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4548 return -EINVAL;
4549 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4550 return -EINVAL;
4551 if (params->supported_rates)
4552 return -EINVAL;
4553 if (params->ext_capab || params->ht_capa || params->vht_capa)
4554 return -EINVAL;
4555 }
4556
4557 if (statype != CFG80211_STA_AP_CLIENT &&
4558 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4559 if (params->vlan)
4560 return -EINVAL;
4561 }
4562
4563 switch (statype) {
4564 case CFG80211_STA_AP_MLME_CLIENT:
4565 /* Use this only for authorizing/unauthorizing a station */
4566 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4567 return -EOPNOTSUPP;
4568 break;
4569 case CFG80211_STA_AP_CLIENT:
4570 case CFG80211_STA_AP_CLIENT_UNASSOC:
4571 /* accept only the listed bits */
4572 if (params->sta_flags_mask &
4573 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4574 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4575 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4576 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4577 BIT(NL80211_STA_FLAG_WME) |
4578 BIT(NL80211_STA_FLAG_MFP)))
4579 return -EINVAL;
4580
4581 /* but authenticated/associated only if driver handles it */
4582 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4583 params->sta_flags_mask &
4584 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4585 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4586 return -EINVAL;
4587 break;
4588 case CFG80211_STA_IBSS:
4589 case CFG80211_STA_AP_STA:
4590 /* reject any changes other than AUTHORIZED */
4591 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4592 return -EINVAL;
4593 break;
4594 case CFG80211_STA_TDLS_PEER_SETUP:
4595 /* reject any changes other than AUTHORIZED or WME */
4596 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4597 BIT(NL80211_STA_FLAG_WME)))
4598 return -EINVAL;
4599 /* force (at least) rates when authorizing */
4600 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4601 !params->supported_rates)
4602 return -EINVAL;
4603 break;
4604 case CFG80211_STA_TDLS_PEER_ACTIVE:
4605 /* reject any changes */
4606 return -EINVAL;
4607 case CFG80211_STA_MESH_PEER_KERNEL:
4608 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4609 return -EINVAL;
4610 break;
4611 case CFG80211_STA_MESH_PEER_USER:
4612 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4613 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4614 return -EINVAL;
4615 break;
4616 }
4617
4618 return 0;
4619 }
4620 EXPORT_SYMBOL(cfg80211_check_station_change);
4621
4622 /*
4623 * Get vlan interface making sure it is running and on the right wiphy.
4624 */
4625 static struct net_device *get_vlan(struct genl_info *info,
4626 struct cfg80211_registered_device *rdev)
4627 {
4628 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4629 struct net_device *v;
4630 int ret;
4631
4632 if (!vlanattr)
4633 return NULL;
4634
4635 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4636 if (!v)
4637 return ERR_PTR(-ENODEV);
4638
4639 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4640 ret = -EINVAL;
4641 goto error;
4642 }
4643
4644 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4645 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4646 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4647 ret = -EINVAL;
4648 goto error;
4649 }
4650
4651 if (!netif_running(v)) {
4652 ret = -ENETDOWN;
4653 goto error;
4654 }
4655
4656 return v;
4657 error:
4658 dev_put(v);
4659 return ERR_PTR(ret);
4660 }
4661
4662 static const struct nla_policy
4663 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4664 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4665 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4666 };
4667
4668 static int nl80211_parse_sta_wme(struct genl_info *info,
4669 struct station_parameters *params)
4670 {
4671 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4672 struct nlattr *nla;
4673 int err;
4674
4675 /* parse WME attributes if present */
4676 if (!info->attrs[NL80211_ATTR_STA_WME])
4677 return 0;
4678
4679 nla = info->attrs[NL80211_ATTR_STA_WME];
4680 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4681 nl80211_sta_wme_policy);
4682 if (err)
4683 return err;
4684
4685 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4686 params->uapsd_queues = nla_get_u8(
4687 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4688 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4689 return -EINVAL;
4690
4691 if (tb[NL80211_STA_WME_MAX_SP])
4692 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4693
4694 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4695 return -EINVAL;
4696
4697 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4698
4699 return 0;
4700 }
4701
4702 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4703 struct station_parameters *params)
4704 {
4705 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4706 params->supported_channels =
4707 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4708 params->supported_channels_len =
4709 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4710 /*
4711 * Need to include at least one (first channel, number of
4712 * channels) tuple for each subband, and must have proper
4713 * tuples for the rest of the data as well.
4714 */
4715 if (params->supported_channels_len < 2)
4716 return -EINVAL;
4717 if (params->supported_channels_len % 2)
4718 return -EINVAL;
4719 }
4720
4721 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4722 params->supported_oper_classes =
4723 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4724 params->supported_oper_classes_len =
4725 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4726 /*
4727 * The value of the Length field of the Supported Operating
4728 * Classes element is between 2 and 253.
4729 */
4730 if (params->supported_oper_classes_len < 2 ||
4731 params->supported_oper_classes_len > 253)
4732 return -EINVAL;
4733 }
4734 return 0;
4735 }
4736
4737 static int nl80211_set_station_tdls(struct genl_info *info,
4738 struct station_parameters *params)
4739 {
4740 int err;
4741 /* Dummy STA entry gets updated once the peer capabilities are known */
4742 if (info->attrs[NL80211_ATTR_PEER_AID])
4743 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4744 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4745 params->ht_capa =
4746 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4747 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4748 params->vht_capa =
4749 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4750
4751 err = nl80211_parse_sta_channel_info(info, params);
4752 if (err)
4753 return err;
4754
4755 return nl80211_parse_sta_wme(info, params);
4756 }
4757
4758 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4759 {
4760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4761 struct net_device *dev = info->user_ptr[1];
4762 struct station_parameters params;
4763 u8 *mac_addr;
4764 int err;
4765
4766 memset(&params, 0, sizeof(params));
4767
4768 if (!rdev->ops->change_station)
4769 return -EOPNOTSUPP;
4770
4771 /*
4772 * AID and listen_interval properties can be set only for unassociated
4773 * station. Include these parameters here and will check them in
4774 * cfg80211_check_station_change().
4775 */
4776 if (info->attrs[NL80211_ATTR_STA_AID])
4777 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4778
4779 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4780 params.listen_interval =
4781 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4782 else
4783 params.listen_interval = -1;
4784
4785 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4786 u8 tmp;
4787
4788 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4789 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4790 return -EINVAL;
4791
4792 params.support_p2p_ps = tmp;
4793 } else {
4794 params.support_p2p_ps = -1;
4795 }
4796
4797 if (!info->attrs[NL80211_ATTR_MAC])
4798 return -EINVAL;
4799
4800 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4801
4802 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4803 params.supported_rates =
4804 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4805 params.supported_rates_len =
4806 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4807 }
4808
4809 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4810 params.capability =
4811 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4812 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4813 }
4814
4815 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4816 params.ext_capab =
4817 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4818 params.ext_capab_len =
4819 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4820 }
4821
4822 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4823 return -EINVAL;
4824
4825 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4826 params.plink_action =
4827 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4828 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4829 return -EINVAL;
4830 }
4831
4832 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4833 params.plink_state =
4834 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4835 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4836 return -EINVAL;
4837 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4838 params.peer_aid = nla_get_u16(
4839 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4840 if (params.peer_aid > IEEE80211_MAX_AID)
4841 return -EINVAL;
4842 }
4843 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4844 }
4845
4846 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4847 enum nl80211_mesh_power_mode pm = nla_get_u32(
4848 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4849
4850 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4851 pm > NL80211_MESH_POWER_MAX)
4852 return -EINVAL;
4853
4854 params.local_pm = pm;
4855 }
4856
4857 /* Include parameters for TDLS peer (will check later) */
4858 err = nl80211_set_station_tdls(info, &params);
4859 if (err)
4860 return err;
4861
4862 params.vlan = get_vlan(info, rdev);
4863 if (IS_ERR(params.vlan))
4864 return PTR_ERR(params.vlan);
4865
4866 switch (dev->ieee80211_ptr->iftype) {
4867 case NL80211_IFTYPE_AP:
4868 case NL80211_IFTYPE_AP_VLAN:
4869 case NL80211_IFTYPE_P2P_GO:
4870 case NL80211_IFTYPE_P2P_CLIENT:
4871 case NL80211_IFTYPE_STATION:
4872 case NL80211_IFTYPE_ADHOC:
4873 case NL80211_IFTYPE_MESH_POINT:
4874 break;
4875 default:
4876 err = -EOPNOTSUPP;
4877 goto out_put_vlan;
4878 }
4879
4880 /* driver will call cfg80211_check_station_change() */
4881 err = rdev_change_station(rdev, dev, mac_addr, &params);
4882
4883 out_put_vlan:
4884 if (params.vlan)
4885 dev_put(params.vlan);
4886
4887 return err;
4888 }
4889
4890 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4891 {
4892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893 int err;
4894 struct net_device *dev = info->user_ptr[1];
4895 struct station_parameters params;
4896 u8 *mac_addr = NULL;
4897 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4898 BIT(NL80211_STA_FLAG_ASSOCIATED);
4899
4900 memset(&params, 0, sizeof(params));
4901
4902 if (!rdev->ops->add_station)
4903 return -EOPNOTSUPP;
4904
4905 if (!info->attrs[NL80211_ATTR_MAC])
4906 return -EINVAL;
4907
4908 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4909 return -EINVAL;
4910
4911 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4912 return -EINVAL;
4913
4914 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4915 !info->attrs[NL80211_ATTR_PEER_AID])
4916 return -EINVAL;
4917
4918 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4919 params.supported_rates =
4920 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4921 params.supported_rates_len =
4922 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4923 params.listen_interval =
4924 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4925
4926 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4927 u8 tmp;
4928
4929 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4930 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4931 return -EINVAL;
4932
4933 params.support_p2p_ps = tmp;
4934 } else {
4935 /*
4936 * if not specified, assume it's supported for P2P GO interface,
4937 * and is NOT supported for AP interface
4938 */
4939 params.support_p2p_ps =
4940 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4941 }
4942
4943 if (info->attrs[NL80211_ATTR_PEER_AID])
4944 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4945 else
4946 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4947 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4948 return -EINVAL;
4949
4950 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4951 params.capability =
4952 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4953 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4954 }
4955
4956 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4957 params.ext_capab =
4958 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4959 params.ext_capab_len =
4960 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4961 }
4962
4963 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4964 params.ht_capa =
4965 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4966
4967 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4968 params.vht_capa =
4969 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4970
4971 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4972 params.opmode_notif_used = true;
4973 params.opmode_notif =
4974 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4975 }
4976
4977 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4978 params.plink_action =
4979 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4980 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4981 return -EINVAL;
4982 }
4983
4984 err = nl80211_parse_sta_channel_info(info, &params);
4985 if (err)
4986 return err;
4987
4988 err = nl80211_parse_sta_wme(info, &params);
4989 if (err)
4990 return err;
4991
4992 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4993 return -EINVAL;
4994
4995 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4996 * as userspace might just pass through the capabilities from the IEs
4997 * directly, rather than enforcing this restriction and returning an
4998 * error in this case.
4999 */
5000 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5001 params.ht_capa = NULL;
5002 params.vht_capa = NULL;
5003 }
5004
5005 /* When you run into this, adjust the code below for the new flag */
5006 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5007
5008 switch (dev->ieee80211_ptr->iftype) {
5009 case NL80211_IFTYPE_AP:
5010 case NL80211_IFTYPE_AP_VLAN:
5011 case NL80211_IFTYPE_P2P_GO:
5012 /* ignore WME attributes if iface/sta is not capable */
5013 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5014 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5015 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5016
5017 /* TDLS peers cannot be added */
5018 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5019 info->attrs[NL80211_ATTR_PEER_AID])
5020 return -EINVAL;
5021 /* but don't bother the driver with it */
5022 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5023
5024 /* allow authenticated/associated only if driver handles it */
5025 if (!(rdev->wiphy.features &
5026 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5027 params.sta_flags_mask & auth_assoc)
5028 return -EINVAL;
5029
5030 /* Older userspace, or userspace wanting to be compatible with
5031 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5032 * and assoc flags in the mask, but assumes the station will be
5033 * added as associated anyway since this was the required driver
5034 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5035 * introduced.
5036 * In order to not bother drivers with this quirk in the API
5037 * set the flags in both the mask and set for new stations in
5038 * this case.
5039 */
5040 if (!(params.sta_flags_mask & auth_assoc)) {
5041 params.sta_flags_mask |= auth_assoc;
5042 params.sta_flags_set |= auth_assoc;
5043 }
5044
5045 /* must be last in here for error handling */
5046 params.vlan = get_vlan(info, rdev);
5047 if (IS_ERR(params.vlan))
5048 return PTR_ERR(params.vlan);
5049 break;
5050 case NL80211_IFTYPE_MESH_POINT:
5051 /* ignore uAPSD data */
5052 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5053
5054 /* associated is disallowed */
5055 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5056 return -EINVAL;
5057 /* TDLS peers cannot be added */
5058 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5059 info->attrs[NL80211_ATTR_PEER_AID])
5060 return -EINVAL;
5061 break;
5062 case NL80211_IFTYPE_STATION:
5063 case NL80211_IFTYPE_P2P_CLIENT:
5064 /* ignore uAPSD data */
5065 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5066
5067 /* these are disallowed */
5068 if (params.sta_flags_mask &
5069 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5070 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5071 return -EINVAL;
5072 /* Only TDLS peers can be added */
5073 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5074 return -EINVAL;
5075 /* Can only add if TDLS ... */
5076 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5077 return -EOPNOTSUPP;
5078 /* ... with external setup is supported */
5079 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5080 return -EOPNOTSUPP;
5081 /*
5082 * Older wpa_supplicant versions always mark the TDLS peer
5083 * as authorized, but it shouldn't yet be.
5084 */
5085 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5086 break;
5087 default:
5088 return -EOPNOTSUPP;
5089 }
5090
5091 /* be aware of params.vlan when changing code here */
5092
5093 err = rdev_add_station(rdev, dev, mac_addr, &params);
5094
5095 if (params.vlan)
5096 dev_put(params.vlan);
5097 return err;
5098 }
5099
5100 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5101 {
5102 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5103 struct net_device *dev = info->user_ptr[1];
5104 struct station_del_parameters params;
5105
5106 memset(&params, 0, sizeof(params));
5107
5108 if (info->attrs[NL80211_ATTR_MAC])
5109 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5110
5111 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5112 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5113 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5114 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5115 return -EINVAL;
5116
5117 if (!rdev->ops->del_station)
5118 return -EOPNOTSUPP;
5119
5120 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5121 params.subtype =
5122 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5123 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5124 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5125 return -EINVAL;
5126 } else {
5127 /* Default to Deauthentication frame */
5128 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5129 }
5130
5131 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5132 params.reason_code =
5133 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5134 if (params.reason_code == 0)
5135 return -EINVAL; /* 0 is reserved */
5136 } else {
5137 /* Default to reason code 2 */
5138 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5139 }
5140
5141 return rdev_del_station(rdev, dev, &params);
5142 }
5143
5144 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5145 int flags, struct net_device *dev,
5146 u8 *dst, u8 *next_hop,
5147 struct mpath_info *pinfo)
5148 {
5149 void *hdr;
5150 struct nlattr *pinfoattr;
5151
5152 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5153 if (!hdr)
5154 return -1;
5155
5156 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5157 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5158 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5159 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5160 goto nla_put_failure;
5161
5162 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5163 if (!pinfoattr)
5164 goto nla_put_failure;
5165 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5166 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5167 pinfo->frame_qlen))
5168 goto nla_put_failure;
5169 if (((pinfo->filled & MPATH_INFO_SN) &&
5170 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5171 ((pinfo->filled & MPATH_INFO_METRIC) &&
5172 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5173 pinfo->metric)) ||
5174 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5175 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5176 pinfo->exptime)) ||
5177 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5178 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5179 pinfo->flags)) ||
5180 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5181 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5182 pinfo->discovery_timeout)) ||
5183 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5184 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5185 pinfo->discovery_retries)))
5186 goto nla_put_failure;
5187
5188 nla_nest_end(msg, pinfoattr);
5189
5190 genlmsg_end(msg, hdr);
5191 return 0;
5192
5193 nla_put_failure:
5194 genlmsg_cancel(msg, hdr);
5195 return -EMSGSIZE;
5196 }
5197
5198 static int nl80211_dump_mpath(struct sk_buff *skb,
5199 struct netlink_callback *cb)
5200 {
5201 struct mpath_info pinfo;
5202 struct cfg80211_registered_device *rdev;
5203 struct wireless_dev *wdev;
5204 u8 dst[ETH_ALEN];
5205 u8 next_hop[ETH_ALEN];
5206 int path_idx = cb->args[2];
5207 int err;
5208
5209 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5210 if (err)
5211 return err;
5212
5213 if (!rdev->ops->dump_mpath) {
5214 err = -EOPNOTSUPP;
5215 goto out_err;
5216 }
5217
5218 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5219 err = -EOPNOTSUPP;
5220 goto out_err;
5221 }
5222
5223 while (1) {
5224 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5225 next_hop, &pinfo);
5226 if (err == -ENOENT)
5227 break;
5228 if (err)
5229 goto out_err;
5230
5231 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5232 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5233 wdev->netdev, dst, next_hop,
5234 &pinfo) < 0)
5235 goto out;
5236
5237 path_idx++;
5238 }
5239
5240 out:
5241 cb->args[2] = path_idx;
5242 err = skb->len;
5243 out_err:
5244 nl80211_finish_wdev_dump(rdev);
5245 return err;
5246 }
5247
5248 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5249 {
5250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5251 int err;
5252 struct net_device *dev = info->user_ptr[1];
5253 struct mpath_info pinfo;
5254 struct sk_buff *msg;
5255 u8 *dst = NULL;
5256 u8 next_hop[ETH_ALEN];
5257
5258 memset(&pinfo, 0, sizeof(pinfo));
5259
5260 if (!info->attrs[NL80211_ATTR_MAC])
5261 return -EINVAL;
5262
5263 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5264
5265 if (!rdev->ops->get_mpath)
5266 return -EOPNOTSUPP;
5267
5268 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5269 return -EOPNOTSUPP;
5270
5271 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5272 if (err)
5273 return err;
5274
5275 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5276 if (!msg)
5277 return -ENOMEM;
5278
5279 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5280 dev, dst, next_hop, &pinfo) < 0) {
5281 nlmsg_free(msg);
5282 return -ENOBUFS;
5283 }
5284
5285 return genlmsg_reply(msg, info);
5286 }
5287
5288 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5289 {
5290 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5291 struct net_device *dev = info->user_ptr[1];
5292 u8 *dst = NULL;
5293 u8 *next_hop = NULL;
5294
5295 if (!info->attrs[NL80211_ATTR_MAC])
5296 return -EINVAL;
5297
5298 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5299 return -EINVAL;
5300
5301 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5302 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5303
5304 if (!rdev->ops->change_mpath)
5305 return -EOPNOTSUPP;
5306
5307 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5308 return -EOPNOTSUPP;
5309
5310 return rdev_change_mpath(rdev, dev, dst, next_hop);
5311 }
5312
5313 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5314 {
5315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5316 struct net_device *dev = info->user_ptr[1];
5317 u8 *dst = NULL;
5318 u8 *next_hop = NULL;
5319
5320 if (!info->attrs[NL80211_ATTR_MAC])
5321 return -EINVAL;
5322
5323 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5324 return -EINVAL;
5325
5326 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5327 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5328
5329 if (!rdev->ops->add_mpath)
5330 return -EOPNOTSUPP;
5331
5332 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5333 return -EOPNOTSUPP;
5334
5335 return rdev_add_mpath(rdev, dev, dst, next_hop);
5336 }
5337
5338 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5339 {
5340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341 struct net_device *dev = info->user_ptr[1];
5342 u8 *dst = NULL;
5343
5344 if (info->attrs[NL80211_ATTR_MAC])
5345 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5346
5347 if (!rdev->ops->del_mpath)
5348 return -EOPNOTSUPP;
5349
5350 return rdev_del_mpath(rdev, dev, dst);
5351 }
5352
5353 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5354 {
5355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5356 int err;
5357 struct net_device *dev = info->user_ptr[1];
5358 struct mpath_info pinfo;
5359 struct sk_buff *msg;
5360 u8 *dst = NULL;
5361 u8 mpp[ETH_ALEN];
5362
5363 memset(&pinfo, 0, sizeof(pinfo));
5364
5365 if (!info->attrs[NL80211_ATTR_MAC])
5366 return -EINVAL;
5367
5368 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5369
5370 if (!rdev->ops->get_mpp)
5371 return -EOPNOTSUPP;
5372
5373 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5374 return -EOPNOTSUPP;
5375
5376 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5377 if (err)
5378 return err;
5379
5380 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5381 if (!msg)
5382 return -ENOMEM;
5383
5384 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5385 dev, dst, mpp, &pinfo) < 0) {
5386 nlmsg_free(msg);
5387 return -ENOBUFS;
5388 }
5389
5390 return genlmsg_reply(msg, info);
5391 }
5392
5393 static int nl80211_dump_mpp(struct sk_buff *skb,
5394 struct netlink_callback *cb)
5395 {
5396 struct mpath_info pinfo;
5397 struct cfg80211_registered_device *rdev;
5398 struct wireless_dev *wdev;
5399 u8 dst[ETH_ALEN];
5400 u8 mpp[ETH_ALEN];
5401 int path_idx = cb->args[2];
5402 int err;
5403
5404 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5405 if (err)
5406 return err;
5407
5408 if (!rdev->ops->dump_mpp) {
5409 err = -EOPNOTSUPP;
5410 goto out_err;
5411 }
5412
5413 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5414 err = -EOPNOTSUPP;
5415 goto out_err;
5416 }
5417
5418 while (1) {
5419 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5420 mpp, &pinfo);
5421 if (err == -ENOENT)
5422 break;
5423 if (err)
5424 goto out_err;
5425
5426 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5427 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5428 wdev->netdev, dst, mpp,
5429 &pinfo) < 0)
5430 goto out;
5431
5432 path_idx++;
5433 }
5434
5435 out:
5436 cb->args[2] = path_idx;
5437 err = skb->len;
5438 out_err:
5439 nl80211_finish_wdev_dump(rdev);
5440 return err;
5441 }
5442
5443 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5444 {
5445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5446 struct net_device *dev = info->user_ptr[1];
5447 struct wireless_dev *wdev = dev->ieee80211_ptr;
5448 struct bss_parameters params;
5449 int err;
5450
5451 memset(&params, 0, sizeof(params));
5452 /* default to not changing parameters */
5453 params.use_cts_prot = -1;
5454 params.use_short_preamble = -1;
5455 params.use_short_slot_time = -1;
5456 params.ap_isolate = -1;
5457 params.ht_opmode = -1;
5458 params.p2p_ctwindow = -1;
5459 params.p2p_opp_ps = -1;
5460
5461 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5462 params.use_cts_prot =
5463 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5464 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5465 params.use_short_preamble =
5466 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5467 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5468 params.use_short_slot_time =
5469 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5470 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5471 params.basic_rates =
5472 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5473 params.basic_rates_len =
5474 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5475 }
5476 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5477 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5478 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5479 params.ht_opmode =
5480 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5481
5482 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5483 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5484 return -EINVAL;
5485 params.p2p_ctwindow =
5486 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5487 if (params.p2p_ctwindow < 0)
5488 return -EINVAL;
5489 if (params.p2p_ctwindow != 0 &&
5490 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5491 return -EINVAL;
5492 }
5493
5494 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5495 u8 tmp;
5496
5497 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5498 return -EINVAL;
5499 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5500 if (tmp > 1)
5501 return -EINVAL;
5502 params.p2p_opp_ps = tmp;
5503 if (params.p2p_opp_ps &&
5504 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5505 return -EINVAL;
5506 }
5507
5508 if (!rdev->ops->change_bss)
5509 return -EOPNOTSUPP;
5510
5511 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5512 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5513 return -EOPNOTSUPP;
5514
5515 wdev_lock(wdev);
5516 err = rdev_change_bss(rdev, dev, &params);
5517 wdev_unlock(wdev);
5518
5519 return err;
5520 }
5521
5522 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5523 {
5524 char *data = NULL;
5525 bool is_indoor;
5526 enum nl80211_user_reg_hint_type user_reg_hint_type;
5527 u32 owner_nlportid;
5528
5529 /*
5530 * You should only get this when cfg80211 hasn't yet initialized
5531 * completely when built-in to the kernel right between the time
5532 * window between nl80211_init() and regulatory_init(), if that is
5533 * even possible.
5534 */
5535 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5536 return -EINPROGRESS;
5537
5538 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5539 user_reg_hint_type =
5540 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5541 else
5542 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5543
5544 switch (user_reg_hint_type) {
5545 case NL80211_USER_REG_HINT_USER:
5546 case NL80211_USER_REG_HINT_CELL_BASE:
5547 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5548 return -EINVAL;
5549
5550 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5551 return regulatory_hint_user(data, user_reg_hint_type);
5552 case NL80211_USER_REG_HINT_INDOOR:
5553 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5554 owner_nlportid = info->snd_portid;
5555 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5556 } else {
5557 owner_nlportid = 0;
5558 is_indoor = true;
5559 }
5560
5561 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5562 default:
5563 return -EINVAL;
5564 }
5565 }
5566
5567 static int nl80211_get_mesh_config(struct sk_buff *skb,
5568 struct genl_info *info)
5569 {
5570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5571 struct net_device *dev = info->user_ptr[1];
5572 struct wireless_dev *wdev = dev->ieee80211_ptr;
5573 struct mesh_config cur_params;
5574 int err = 0;
5575 void *hdr;
5576 struct nlattr *pinfoattr;
5577 struct sk_buff *msg;
5578
5579 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5580 return -EOPNOTSUPP;
5581
5582 if (!rdev->ops->get_mesh_config)
5583 return -EOPNOTSUPP;
5584
5585 wdev_lock(wdev);
5586 /* If not connected, get default parameters */
5587 if (!wdev->mesh_id_len)
5588 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5589 else
5590 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5591 wdev_unlock(wdev);
5592
5593 if (err)
5594 return err;
5595
5596 /* Draw up a netlink message to send back */
5597 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5598 if (!msg)
5599 return -ENOMEM;
5600 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5601 NL80211_CMD_GET_MESH_CONFIG);
5602 if (!hdr)
5603 goto out;
5604 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5605 if (!pinfoattr)
5606 goto nla_put_failure;
5607 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5608 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5609 cur_params.dot11MeshRetryTimeout) ||
5610 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5611 cur_params.dot11MeshConfirmTimeout) ||
5612 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5613 cur_params.dot11MeshHoldingTimeout) ||
5614 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5615 cur_params.dot11MeshMaxPeerLinks) ||
5616 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5617 cur_params.dot11MeshMaxRetries) ||
5618 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5619 cur_params.dot11MeshTTL) ||
5620 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5621 cur_params.element_ttl) ||
5622 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5623 cur_params.auto_open_plinks) ||
5624 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5625 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5626 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5627 cur_params.dot11MeshHWMPmaxPREQretries) ||
5628 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5629 cur_params.path_refresh_time) ||
5630 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5631 cur_params.min_discovery_timeout) ||
5632 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5633 cur_params.dot11MeshHWMPactivePathTimeout) ||
5634 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5635 cur_params.dot11MeshHWMPpreqMinInterval) ||
5636 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5637 cur_params.dot11MeshHWMPperrMinInterval) ||
5638 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5639 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5640 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5641 cur_params.dot11MeshHWMPRootMode) ||
5642 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5643 cur_params.dot11MeshHWMPRannInterval) ||
5644 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5645 cur_params.dot11MeshGateAnnouncementProtocol) ||
5646 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5647 cur_params.dot11MeshForwarding) ||
5648 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5649 cur_params.rssi_threshold) ||
5650 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5651 cur_params.ht_opmode) ||
5652 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5653 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5654 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5655 cur_params.dot11MeshHWMProotInterval) ||
5656 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5657 cur_params.dot11MeshHWMPconfirmationInterval) ||
5658 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5659 cur_params.power_mode) ||
5660 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5661 cur_params.dot11MeshAwakeWindowDuration) ||
5662 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5663 cur_params.plink_timeout))
5664 goto nla_put_failure;
5665 nla_nest_end(msg, pinfoattr);
5666 genlmsg_end(msg, hdr);
5667 return genlmsg_reply(msg, info);
5668
5669 nla_put_failure:
5670 genlmsg_cancel(msg, hdr);
5671 out:
5672 nlmsg_free(msg);
5673 return -ENOBUFS;
5674 }
5675
5676 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5677 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5678 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5679 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5680 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5681 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5682 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5683 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5684 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5685 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5686 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5687 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5688 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5689 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5690 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5691 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5692 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5693 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5694 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5695 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5696 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5697 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5698 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5699 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5700 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5701 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5702 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5703 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5704 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5705 };
5706
5707 static const struct nla_policy
5708 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5709 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5710 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5711 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5712 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5713 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5714 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5715 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5716 .len = IEEE80211_MAX_DATA_LEN },
5717 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5718 };
5719
5720 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5721 {
5722 u8 val = nla_get_u8(nla);
5723 if (val < min || val > max)
5724 return -EINVAL;
5725 *out = val;
5726 return 0;
5727 }
5728
5729 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5730 {
5731 u8 val = nla_get_u8(nla);
5732 if (val < min || val > max)
5733 return -EINVAL;
5734 *out = val;
5735 return 0;
5736 }
5737
5738 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5739 {
5740 u16 val = nla_get_u16(nla);
5741 if (val < min || val > max)
5742 return -EINVAL;
5743 *out = val;
5744 return 0;
5745 }
5746
5747 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5748 {
5749 u32 val = nla_get_u32(nla);
5750 if (val < min || val > max)
5751 return -EINVAL;
5752 *out = val;
5753 return 0;
5754 }
5755
5756 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5757 {
5758 s32 val = nla_get_s32(nla);
5759 if (val < min || val > max)
5760 return -EINVAL;
5761 *out = val;
5762 return 0;
5763 }
5764
5765 static int nl80211_check_power_mode(const struct nlattr *nla,
5766 enum nl80211_mesh_power_mode min,
5767 enum nl80211_mesh_power_mode max,
5768 enum nl80211_mesh_power_mode *out)
5769 {
5770 u32 val = nla_get_u32(nla);
5771 if (val < min || val > max)
5772 return -EINVAL;
5773 *out = val;
5774 return 0;
5775 }
5776
5777 static int nl80211_parse_mesh_config(struct genl_info *info,
5778 struct mesh_config *cfg,
5779 u32 *mask_out)
5780 {
5781 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5782 u32 mask = 0;
5783 u16 ht_opmode;
5784
5785 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5786 do { \
5787 if (tb[attr]) { \
5788 if (fn(tb[attr], min, max, &cfg->param)) \
5789 return -EINVAL; \
5790 mask |= (1 << (attr - 1)); \
5791 } \
5792 } while (0)
5793
5794 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5795 return -EINVAL;
5796 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5797 info->attrs[NL80211_ATTR_MESH_CONFIG],
5798 nl80211_meshconf_params_policy))
5799 return -EINVAL;
5800
5801 /* This makes sure that there aren't more than 32 mesh config
5802 * parameters (otherwise our bitfield scheme would not work.) */
5803 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5804
5805 /* Fill in the params struct */
5806 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5807 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5808 nl80211_check_u16);
5809 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5810 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5811 nl80211_check_u16);
5812 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5813 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5814 nl80211_check_u16);
5815 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5816 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5817 nl80211_check_u16);
5818 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5819 mask, NL80211_MESHCONF_MAX_RETRIES,
5820 nl80211_check_u8);
5821 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5822 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5823 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5824 mask, NL80211_MESHCONF_ELEMENT_TTL,
5825 nl80211_check_u8);
5826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5827 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5828 nl80211_check_bool);
5829 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5830 1, 255, mask,
5831 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5832 nl80211_check_u32);
5833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5834 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5835 nl80211_check_u8);
5836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5837 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5838 nl80211_check_u32);
5839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5840 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5841 nl80211_check_u16);
5842 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5843 1, 65535, mask,
5844 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5845 nl80211_check_u32);
5846 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5847 1, 65535, mask,
5848 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5849 nl80211_check_u16);
5850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5851 1, 65535, mask,
5852 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5853 nl80211_check_u16);
5854 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5855 dot11MeshHWMPnetDiameterTraversalTime,
5856 1, 65535, mask,
5857 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5858 nl80211_check_u16);
5859 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5860 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5861 nl80211_check_u8);
5862 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5863 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5864 nl80211_check_u16);
5865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5866 dot11MeshGateAnnouncementProtocol, 0, 1,
5867 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5868 nl80211_check_bool);
5869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5870 mask, NL80211_MESHCONF_FORWARDING,
5871 nl80211_check_bool);
5872 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5873 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5874 nl80211_check_s32);
5875 /*
5876 * Check HT operation mode based on
5877 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5878 */
5879 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5880 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5881
5882 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5883 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5884 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5885 return -EINVAL;
5886
5887 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5888 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5889 return -EINVAL;
5890
5891 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5892 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5893 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5894 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5895 return -EINVAL;
5896 break;
5897 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5898 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5899 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5900 return -EINVAL;
5901 break;
5902 }
5903 cfg->ht_opmode = ht_opmode;
5904 }
5905 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5906 1, 65535, mask,
5907 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5908 nl80211_check_u32);
5909 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5910 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5911 nl80211_check_u16);
5912 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5913 dot11MeshHWMPconfirmationInterval,
5914 1, 65535, mask,
5915 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5916 nl80211_check_u16);
5917 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5918 NL80211_MESH_POWER_ACTIVE,
5919 NL80211_MESH_POWER_MAX,
5920 mask, NL80211_MESHCONF_POWER_MODE,
5921 nl80211_check_power_mode);
5922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5923 0, 65535, mask,
5924 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5925 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5926 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5927 nl80211_check_u32);
5928 if (mask_out)
5929 *mask_out = mask;
5930
5931 return 0;
5932
5933 #undef FILL_IN_MESH_PARAM_IF_SET
5934 }
5935
5936 static int nl80211_parse_mesh_setup(struct genl_info *info,
5937 struct mesh_setup *setup)
5938 {
5939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5940 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5941
5942 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5943 return -EINVAL;
5944 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5945 info->attrs[NL80211_ATTR_MESH_SETUP],
5946 nl80211_mesh_setup_params_policy))
5947 return -EINVAL;
5948
5949 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5950 setup->sync_method =
5951 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5952 IEEE80211_SYNC_METHOD_VENDOR :
5953 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5954
5955 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5956 setup->path_sel_proto =
5957 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5958 IEEE80211_PATH_PROTOCOL_VENDOR :
5959 IEEE80211_PATH_PROTOCOL_HWMP;
5960
5961 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5962 setup->path_metric =
5963 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5964 IEEE80211_PATH_METRIC_VENDOR :
5965 IEEE80211_PATH_METRIC_AIRTIME;
5966
5967 if (tb[NL80211_MESH_SETUP_IE]) {
5968 struct nlattr *ieattr =
5969 tb[NL80211_MESH_SETUP_IE];
5970 if (!is_valid_ie_attr(ieattr))
5971 return -EINVAL;
5972 setup->ie = nla_data(ieattr);
5973 setup->ie_len = nla_len(ieattr);
5974 }
5975 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5976 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5977 return -EINVAL;
5978 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5979 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5980 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5981 if (setup->is_secure)
5982 setup->user_mpm = true;
5983
5984 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5985 if (!setup->user_mpm)
5986 return -EINVAL;
5987 setup->auth_id =
5988 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5989 }
5990
5991 return 0;
5992 }
5993
5994 static int nl80211_update_mesh_config(struct sk_buff *skb,
5995 struct genl_info *info)
5996 {
5997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5998 struct net_device *dev = info->user_ptr[1];
5999 struct wireless_dev *wdev = dev->ieee80211_ptr;
6000 struct mesh_config cfg;
6001 u32 mask;
6002 int err;
6003
6004 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6005 return -EOPNOTSUPP;
6006
6007 if (!rdev->ops->update_mesh_config)
6008 return -EOPNOTSUPP;
6009
6010 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6011 if (err)
6012 return err;
6013
6014 wdev_lock(wdev);
6015 if (!wdev->mesh_id_len)
6016 err = -ENOLINK;
6017
6018 if (!err)
6019 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6020
6021 wdev_unlock(wdev);
6022
6023 return err;
6024 }
6025
6026 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6027 struct sk_buff *msg)
6028 {
6029 struct nlattr *nl_reg_rules;
6030 unsigned int i;
6031
6032 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6033 (regdom->dfs_region &&
6034 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6035 goto nla_put_failure;
6036
6037 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6038 if (!nl_reg_rules)
6039 goto nla_put_failure;
6040
6041 for (i = 0; i < regdom->n_reg_rules; i++) {
6042 struct nlattr *nl_reg_rule;
6043 const struct ieee80211_reg_rule *reg_rule;
6044 const struct ieee80211_freq_range *freq_range;
6045 const struct ieee80211_power_rule *power_rule;
6046 unsigned int max_bandwidth_khz;
6047
6048 reg_rule = &regdom->reg_rules[i];
6049 freq_range = &reg_rule->freq_range;
6050 power_rule = &reg_rule->power_rule;
6051
6052 nl_reg_rule = nla_nest_start(msg, i);
6053 if (!nl_reg_rule)
6054 goto nla_put_failure;
6055
6056 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6057 if (!max_bandwidth_khz)
6058 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6059 reg_rule);
6060
6061 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6062 reg_rule->flags) ||
6063 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6064 freq_range->start_freq_khz) ||
6065 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6066 freq_range->end_freq_khz) ||
6067 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6068 max_bandwidth_khz) ||
6069 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6070 power_rule->max_antenna_gain) ||
6071 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6072 power_rule->max_eirp) ||
6073 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6074 reg_rule->dfs_cac_ms))
6075 goto nla_put_failure;
6076
6077 nla_nest_end(msg, nl_reg_rule);
6078 }
6079
6080 nla_nest_end(msg, nl_reg_rules);
6081 return 0;
6082
6083 nla_put_failure:
6084 return -EMSGSIZE;
6085 }
6086
6087 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6088 {
6089 const struct ieee80211_regdomain *regdom = NULL;
6090 struct cfg80211_registered_device *rdev;
6091 struct wiphy *wiphy = NULL;
6092 struct sk_buff *msg;
6093 void *hdr;
6094
6095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6096 if (!msg)
6097 return -ENOBUFS;
6098
6099 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6100 NL80211_CMD_GET_REG);
6101 if (!hdr)
6102 goto put_failure;
6103
6104 if (info->attrs[NL80211_ATTR_WIPHY]) {
6105 bool self_managed;
6106
6107 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6108 if (IS_ERR(rdev)) {
6109 nlmsg_free(msg);
6110 return PTR_ERR(rdev);
6111 }
6112
6113 wiphy = &rdev->wiphy;
6114 self_managed = wiphy->regulatory_flags &
6115 REGULATORY_WIPHY_SELF_MANAGED;
6116 regdom = get_wiphy_regdom(wiphy);
6117
6118 /* a self-managed-reg device must have a private regdom */
6119 if (WARN_ON(!regdom && self_managed)) {
6120 nlmsg_free(msg);
6121 return -EINVAL;
6122 }
6123
6124 if (regdom &&
6125 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6126 goto nla_put_failure;
6127 }
6128
6129 if (!wiphy && reg_last_request_cell_base() &&
6130 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6131 NL80211_USER_REG_HINT_CELL_BASE))
6132 goto nla_put_failure;
6133
6134 rcu_read_lock();
6135
6136 if (!regdom)
6137 regdom = rcu_dereference(cfg80211_regdomain);
6138
6139 if (nl80211_put_regdom(regdom, msg))
6140 goto nla_put_failure_rcu;
6141
6142 rcu_read_unlock();
6143
6144 genlmsg_end(msg, hdr);
6145 return genlmsg_reply(msg, info);
6146
6147 nla_put_failure_rcu:
6148 rcu_read_unlock();
6149 nla_put_failure:
6150 genlmsg_cancel(msg, hdr);
6151 put_failure:
6152 nlmsg_free(msg);
6153 return -EMSGSIZE;
6154 }
6155
6156 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6157 u32 seq, int flags, struct wiphy *wiphy,
6158 const struct ieee80211_regdomain *regdom)
6159 {
6160 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6161 NL80211_CMD_GET_REG);
6162
6163 if (!hdr)
6164 return -1;
6165
6166 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6167
6168 if (nl80211_put_regdom(regdom, msg))
6169 goto nla_put_failure;
6170
6171 if (!wiphy && reg_last_request_cell_base() &&
6172 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6173 NL80211_USER_REG_HINT_CELL_BASE))
6174 goto nla_put_failure;
6175
6176 if (wiphy &&
6177 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6178 goto nla_put_failure;
6179
6180 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6181 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6182 goto nla_put_failure;
6183
6184 genlmsg_end(msg, hdr);
6185 return 0;
6186
6187 nla_put_failure:
6188 genlmsg_cancel(msg, hdr);
6189 return -EMSGSIZE;
6190 }
6191
6192 static int nl80211_get_reg_dump(struct sk_buff *skb,
6193 struct netlink_callback *cb)
6194 {
6195 const struct ieee80211_regdomain *regdom = NULL;
6196 struct cfg80211_registered_device *rdev;
6197 int err, reg_idx, start = cb->args[2];
6198
6199 rtnl_lock();
6200
6201 if (cfg80211_regdomain && start == 0) {
6202 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6203 NLM_F_MULTI, NULL,
6204 rtnl_dereference(cfg80211_regdomain));
6205 if (err < 0)
6206 goto out_err;
6207 }
6208
6209 /* the global regdom is idx 0 */
6210 reg_idx = 1;
6211 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6212 regdom = get_wiphy_regdom(&rdev->wiphy);
6213 if (!regdom)
6214 continue;
6215
6216 if (++reg_idx <= start)
6217 continue;
6218
6219 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6220 NLM_F_MULTI, &rdev->wiphy, regdom);
6221 if (err < 0) {
6222 reg_idx--;
6223 break;
6224 }
6225 }
6226
6227 cb->args[2] = reg_idx;
6228 err = skb->len;
6229 out_err:
6230 rtnl_unlock();
6231 return err;
6232 }
6233
6234 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6235 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6236 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6237 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6238 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6239 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6240 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6241 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6242 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6243 };
6244
6245 static int parse_reg_rule(struct nlattr *tb[],
6246 struct ieee80211_reg_rule *reg_rule)
6247 {
6248 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6249 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6250
6251 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6252 return -EINVAL;
6253 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6254 return -EINVAL;
6255 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6256 return -EINVAL;
6257 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6258 return -EINVAL;
6259 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6260 return -EINVAL;
6261
6262 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6263
6264 freq_range->start_freq_khz =
6265 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6266 freq_range->end_freq_khz =
6267 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6268 freq_range->max_bandwidth_khz =
6269 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6270
6271 power_rule->max_eirp =
6272 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6273
6274 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6275 power_rule->max_antenna_gain =
6276 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6277
6278 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6279 reg_rule->dfs_cac_ms =
6280 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6281
6282 return 0;
6283 }
6284
6285 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6286 {
6287 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6288 struct nlattr *nl_reg_rule;
6289 char *alpha2;
6290 int rem_reg_rules, r;
6291 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6292 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6293 struct ieee80211_regdomain *rd;
6294
6295 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6296 return -EINVAL;
6297
6298 if (!info->attrs[NL80211_ATTR_REG_RULES])
6299 return -EINVAL;
6300
6301 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6302
6303 if (info->attrs[NL80211_ATTR_DFS_REGION])
6304 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6305
6306 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6307 rem_reg_rules) {
6308 num_rules++;
6309 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6310 return -EINVAL;
6311 }
6312
6313 if (!reg_is_valid_request(alpha2))
6314 return -EINVAL;
6315
6316 size_of_regd = sizeof(struct ieee80211_regdomain) +
6317 num_rules * sizeof(struct ieee80211_reg_rule);
6318
6319 rd = kzalloc(size_of_regd, GFP_KERNEL);
6320 if (!rd)
6321 return -ENOMEM;
6322
6323 rd->n_reg_rules = num_rules;
6324 rd->alpha2[0] = alpha2[0];
6325 rd->alpha2[1] = alpha2[1];
6326
6327 /*
6328 * Disable DFS master mode if the DFS region was
6329 * not supported or known on this kernel.
6330 */
6331 if (reg_supported_dfs_region(dfs_region))
6332 rd->dfs_region = dfs_region;
6333
6334 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6335 rem_reg_rules) {
6336 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6337 nl_reg_rule, reg_rule_policy);
6338 if (r)
6339 goto bad_reg;
6340 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6341 if (r)
6342 goto bad_reg;
6343
6344 rule_idx++;
6345
6346 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6347 r = -EINVAL;
6348 goto bad_reg;
6349 }
6350 }
6351
6352 /* set_regdom takes ownership of rd */
6353 return set_regdom(rd, REGD_SOURCE_CRDA);
6354 bad_reg:
6355 kfree(rd);
6356 return r;
6357 }
6358 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6359
6360 static int validate_scan_freqs(struct nlattr *freqs)
6361 {
6362 struct nlattr *attr1, *attr2;
6363 int n_channels = 0, tmp1, tmp2;
6364
6365 nla_for_each_nested(attr1, freqs, tmp1) {
6366 n_channels++;
6367 /*
6368 * Some hardware has a limited channel list for
6369 * scanning, and it is pretty much nonsensical
6370 * to scan for a channel twice, so disallow that
6371 * and don't require drivers to check that the
6372 * channel list they get isn't longer than what
6373 * they can scan, as long as they can scan all
6374 * the channels they registered at once.
6375 */
6376 nla_for_each_nested(attr2, freqs, tmp2)
6377 if (attr1 != attr2 &&
6378 nla_get_u32(attr1) == nla_get_u32(attr2))
6379 return 0;
6380 }
6381
6382 return n_channels;
6383 }
6384
6385 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6386 {
6387 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6388 }
6389
6390 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6391 struct cfg80211_bss_selection *bss_select)
6392 {
6393 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6394 struct nlattr *nest;
6395 int err;
6396 bool found = false;
6397 int i;
6398
6399 /* only process one nested attribute */
6400 nest = nla_data(nla);
6401 if (!nla_ok(nest, nla_len(nest)))
6402 return -EINVAL;
6403
6404 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6405 nl80211_bss_select_policy);
6406 if (err)
6407 return err;
6408
6409 /* only one attribute may be given */
6410 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6411 if (attr[i]) {
6412 if (found)
6413 return -EINVAL;
6414 found = true;
6415 }
6416 }
6417
6418 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6419
6420 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6421 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6422
6423 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6424 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6425 bss_select->param.band_pref =
6426 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6427 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6428 return -EINVAL;
6429 }
6430
6431 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6432 struct nl80211_bss_select_rssi_adjust *adj_param;
6433
6434 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6435 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6436 bss_select->param.adjust.band = adj_param->band;
6437 bss_select->param.adjust.delta = adj_param->delta;
6438 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6439 return -EINVAL;
6440 }
6441
6442 /* user-space did not provide behaviour attribute */
6443 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6444 return -EINVAL;
6445
6446 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6447 return -EINVAL;
6448
6449 return 0;
6450 }
6451
6452 static int nl80211_parse_random_mac(struct nlattr **attrs,
6453 u8 *mac_addr, u8 *mac_addr_mask)
6454 {
6455 int i;
6456
6457 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6458 eth_zero_addr(mac_addr);
6459 eth_zero_addr(mac_addr_mask);
6460 mac_addr[0] = 0x2;
6461 mac_addr_mask[0] = 0x3;
6462
6463 return 0;
6464 }
6465
6466 /* need both or none */
6467 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6468 return -EINVAL;
6469
6470 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6471 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6472
6473 /* don't allow or configure an mcast address */
6474 if (!is_multicast_ether_addr(mac_addr_mask) ||
6475 is_multicast_ether_addr(mac_addr))
6476 return -EINVAL;
6477
6478 /*
6479 * allow users to pass a MAC address that has bits set outside
6480 * of the mask, but don't bother drivers with having to deal
6481 * with such bits
6482 */
6483 for (i = 0; i < ETH_ALEN; i++)
6484 mac_addr[i] &= mac_addr_mask[i];
6485
6486 return 0;
6487 }
6488
6489 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6490 {
6491 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6492 struct wireless_dev *wdev = info->user_ptr[1];
6493 struct cfg80211_scan_request *request;
6494 struct nlattr *attr;
6495 struct wiphy *wiphy;
6496 int err, tmp, n_ssids = 0, n_channels, i;
6497 size_t ie_len;
6498
6499 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6500 return -EINVAL;
6501
6502 wiphy = &rdev->wiphy;
6503
6504 if (wdev->iftype == NL80211_IFTYPE_NAN)
6505 return -EOPNOTSUPP;
6506
6507 if (!rdev->ops->scan)
6508 return -EOPNOTSUPP;
6509
6510 if (rdev->scan_req || rdev->scan_msg) {
6511 err = -EBUSY;
6512 goto unlock;
6513 }
6514
6515 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6516 n_channels = validate_scan_freqs(
6517 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6518 if (!n_channels) {
6519 err = -EINVAL;
6520 goto unlock;
6521 }
6522 } else {
6523 n_channels = ieee80211_get_num_supported_channels(wiphy);
6524 }
6525
6526 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6527 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6528 n_ssids++;
6529
6530 if (n_ssids > wiphy->max_scan_ssids) {
6531 err = -EINVAL;
6532 goto unlock;
6533 }
6534
6535 if (info->attrs[NL80211_ATTR_IE])
6536 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6537 else
6538 ie_len = 0;
6539
6540 if (ie_len > wiphy->max_scan_ie_len) {
6541 err = -EINVAL;
6542 goto unlock;
6543 }
6544
6545 request = kzalloc(sizeof(*request)
6546 + sizeof(*request->ssids) * n_ssids
6547 + sizeof(*request->channels) * n_channels
6548 + ie_len, GFP_KERNEL);
6549 if (!request) {
6550 err = -ENOMEM;
6551 goto unlock;
6552 }
6553
6554 if (n_ssids)
6555 request->ssids = (void *)&request->channels[n_channels];
6556 request->n_ssids = n_ssids;
6557 if (ie_len) {
6558 if (n_ssids)
6559 request->ie = (void *)(request->ssids + n_ssids);
6560 else
6561 request->ie = (void *)(request->channels + n_channels);
6562 }
6563
6564 i = 0;
6565 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6566 /* user specified, bail out if channel not found */
6567 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6568 struct ieee80211_channel *chan;
6569
6570 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6571
6572 if (!chan) {
6573 err = -EINVAL;
6574 goto out_free;
6575 }
6576
6577 /* ignore disabled channels */
6578 if (chan->flags & IEEE80211_CHAN_DISABLED)
6579 continue;
6580
6581 request->channels[i] = chan;
6582 i++;
6583 }
6584 } else {
6585 enum nl80211_band band;
6586
6587 /* all channels */
6588 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6589 int j;
6590
6591 if (!wiphy->bands[band])
6592 continue;
6593 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6594 struct ieee80211_channel *chan;
6595
6596 chan = &wiphy->bands[band]->channels[j];
6597
6598 if (chan->flags & IEEE80211_CHAN_DISABLED)
6599 continue;
6600
6601 request->channels[i] = chan;
6602 i++;
6603 }
6604 }
6605 }
6606
6607 if (!i) {
6608 err = -EINVAL;
6609 goto out_free;
6610 }
6611
6612 request->n_channels = i;
6613
6614 i = 0;
6615 if (n_ssids) {
6616 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6617 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6618 err = -EINVAL;
6619 goto out_free;
6620 }
6621 request->ssids[i].ssid_len = nla_len(attr);
6622 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6623 i++;
6624 }
6625 }
6626
6627 if (info->attrs[NL80211_ATTR_IE]) {
6628 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6629 memcpy((void *)request->ie,
6630 nla_data(info->attrs[NL80211_ATTR_IE]),
6631 request->ie_len);
6632 }
6633
6634 for (i = 0; i < NUM_NL80211_BANDS; i++)
6635 if (wiphy->bands[i])
6636 request->rates[i] =
6637 (1 << wiphy->bands[i]->n_bitrates) - 1;
6638
6639 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6640 nla_for_each_nested(attr,
6641 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6642 tmp) {
6643 enum nl80211_band band = nla_type(attr);
6644
6645 if (band < 0 || band >= NUM_NL80211_BANDS) {
6646 err = -EINVAL;
6647 goto out_free;
6648 }
6649
6650 if (!wiphy->bands[band])
6651 continue;
6652
6653 err = ieee80211_get_ratemask(wiphy->bands[band],
6654 nla_data(attr),
6655 nla_len(attr),
6656 &request->rates[band]);
6657 if (err)
6658 goto out_free;
6659 }
6660 }
6661
6662 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6663 if (!wiphy_ext_feature_isset(wiphy,
6664 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6665 err = -EOPNOTSUPP;
6666 goto out_free;
6667 }
6668
6669 request->duration =
6670 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6671 request->duration_mandatory =
6672 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6673 }
6674
6675 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6676 request->flags = nla_get_u32(
6677 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6678 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6679 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6680 err = -EOPNOTSUPP;
6681 goto out_free;
6682 }
6683
6684 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6685 if (!(wiphy->features &
6686 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6687 err = -EOPNOTSUPP;
6688 goto out_free;
6689 }
6690
6691 if (wdev->current_bss) {
6692 err = -EOPNOTSUPP;
6693 goto out_free;
6694 }
6695
6696 err = nl80211_parse_random_mac(info->attrs,
6697 request->mac_addr,
6698 request->mac_addr_mask);
6699 if (err)
6700 goto out_free;
6701 }
6702 }
6703
6704 request->no_cck =
6705 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6706
6707 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6708 * BSSID to scan for. This was problematic because that same attribute
6709 * was already used for another purpose (local random MAC address). The
6710 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6711 * compatibility with older userspace components, also use the
6712 * NL80211_ATTR_MAC value here if it can be determined to be used for
6713 * the specific BSSID use case instead of the random MAC address
6714 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6715 */
6716 if (info->attrs[NL80211_ATTR_BSSID])
6717 memcpy(request->bssid,
6718 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6719 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6720 info->attrs[NL80211_ATTR_MAC])
6721 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6722 ETH_ALEN);
6723 else
6724 eth_broadcast_addr(request->bssid);
6725
6726 request->wdev = wdev;
6727 request->wiphy = &rdev->wiphy;
6728 request->scan_start = jiffies;
6729
6730 rdev->scan_req = request;
6731 err = rdev_scan(rdev, request);
6732
6733 if (!err) {
6734 nl80211_send_scan_start(rdev, wdev);
6735 if (wdev->netdev)
6736 dev_hold(wdev->netdev);
6737 } else {
6738 out_free:
6739 rdev->scan_req = NULL;
6740 kfree(request);
6741 }
6742
6743 unlock:
6744 return err;
6745 }
6746
6747 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6748 {
6749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6750 struct wireless_dev *wdev = info->user_ptr[1];
6751
6752 if (!rdev->ops->abort_scan)
6753 return -EOPNOTSUPP;
6754
6755 if (rdev->scan_msg)
6756 return 0;
6757
6758 if (!rdev->scan_req)
6759 return -ENOENT;
6760
6761 rdev_abort_scan(rdev, wdev);
6762 return 0;
6763 }
6764
6765 static int
6766 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6767 struct cfg80211_sched_scan_request *request,
6768 struct nlattr **attrs)
6769 {
6770 int tmp, err, i = 0;
6771 struct nlattr *attr;
6772
6773 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6774 u32 interval;
6775
6776 /*
6777 * If scan plans are not specified,
6778 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
6779 * case one scan plan will be set with the specified scan
6780 * interval and infinite number of iterations.
6781 */
6782 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6783 if (!interval)
6784 return -EINVAL;
6785
6786 request->scan_plans[0].interval =
6787 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6788 if (!request->scan_plans[0].interval)
6789 return -EINVAL;
6790
6791 if (request->scan_plans[0].interval >
6792 wiphy->max_sched_scan_plan_interval)
6793 request->scan_plans[0].interval =
6794 wiphy->max_sched_scan_plan_interval;
6795
6796 return 0;
6797 }
6798
6799 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6800 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6801
6802 if (WARN_ON(i >= n_plans))
6803 return -EINVAL;
6804
6805 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6806 attr, nl80211_plan_policy);
6807 if (err)
6808 return err;
6809
6810 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6811 return -EINVAL;
6812
6813 request->scan_plans[i].interval =
6814 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6815 if (!request->scan_plans[i].interval ||
6816 request->scan_plans[i].interval >
6817 wiphy->max_sched_scan_plan_interval)
6818 return -EINVAL;
6819
6820 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6821 request->scan_plans[i].iterations =
6822 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6823 if (!request->scan_plans[i].iterations ||
6824 (request->scan_plans[i].iterations >
6825 wiphy->max_sched_scan_plan_iterations))
6826 return -EINVAL;
6827 } else if (i < n_plans - 1) {
6828 /*
6829 * All scan plans but the last one must specify
6830 * a finite number of iterations
6831 */
6832 return -EINVAL;
6833 }
6834
6835 i++;
6836 }
6837
6838 /*
6839 * The last scan plan must not specify the number of
6840 * iterations, it is supposed to run infinitely
6841 */
6842 if (request->scan_plans[n_plans - 1].iterations)
6843 return -EINVAL;
6844
6845 return 0;
6846 }
6847
6848 static struct cfg80211_sched_scan_request *
6849 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6850 struct nlattr **attrs)
6851 {
6852 struct cfg80211_sched_scan_request *request;
6853 struct nlattr *attr;
6854 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6855 enum nl80211_band band;
6856 size_t ie_len;
6857 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6858 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6859
6860 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6861 return ERR_PTR(-EINVAL);
6862
6863 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6864 n_channels = validate_scan_freqs(
6865 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6866 if (!n_channels)
6867 return ERR_PTR(-EINVAL);
6868 } else {
6869 n_channels = ieee80211_get_num_supported_channels(wiphy);
6870 }
6871
6872 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6873 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6874 tmp)
6875 n_ssids++;
6876
6877 if (n_ssids > wiphy->max_sched_scan_ssids)
6878 return ERR_PTR(-EINVAL);
6879
6880 /*
6881 * First, count the number of 'real' matchsets. Due to an issue with
6882 * the old implementation, matchsets containing only the RSSI attribute
6883 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6884 * RSSI for all matchsets, rather than their own matchset for reporting
6885 * all APs with a strong RSSI. This is needed to be compatible with
6886 * older userspace that treated a matchset with only the RSSI as the
6887 * global RSSI for all other matchsets - if there are other matchsets.
6888 */
6889 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6890 nla_for_each_nested(attr,
6891 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6892 tmp) {
6893 struct nlattr *rssi;
6894
6895 err = nla_parse_nested(tb,
6896 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6897 attr, nl80211_match_policy);
6898 if (err)
6899 return ERR_PTR(err);
6900 /* add other standalone attributes here */
6901 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6902 n_match_sets++;
6903 continue;
6904 }
6905 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6906 if (rssi)
6907 default_match_rssi = nla_get_s32(rssi);
6908 }
6909 }
6910
6911 /* However, if there's no other matchset, add the RSSI one */
6912 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6913 n_match_sets = 1;
6914
6915 if (n_match_sets > wiphy->max_match_sets)
6916 return ERR_PTR(-EINVAL);
6917
6918 if (attrs[NL80211_ATTR_IE])
6919 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6920 else
6921 ie_len = 0;
6922
6923 if (ie_len > wiphy->max_sched_scan_ie_len)
6924 return ERR_PTR(-EINVAL);
6925
6926 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6927 /*
6928 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6929 * each scan plan already specifies its own interval
6930 */
6931 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6932 return ERR_PTR(-EINVAL);
6933
6934 nla_for_each_nested(attr,
6935 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6936 n_plans++;
6937 } else {
6938 /*
6939 * The scan interval attribute is kept for backward
6940 * compatibility. If no scan plans are specified and sched scan
6941 * interval is specified, one scan plan will be set with this
6942 * scan interval and infinite number of iterations.
6943 */
6944 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6945 return ERR_PTR(-EINVAL);
6946
6947 n_plans = 1;
6948 }
6949
6950 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6951 return ERR_PTR(-EINVAL);
6952
6953 request = kzalloc(sizeof(*request)
6954 + sizeof(*request->ssids) * n_ssids
6955 + sizeof(*request->match_sets) * n_match_sets
6956 + sizeof(*request->scan_plans) * n_plans
6957 + sizeof(*request->channels) * n_channels
6958 + ie_len, GFP_KERNEL);
6959 if (!request)
6960 return ERR_PTR(-ENOMEM);
6961
6962 if (n_ssids)
6963 request->ssids = (void *)&request->channels[n_channels];
6964 request->n_ssids = n_ssids;
6965 if (ie_len) {
6966 if (n_ssids)
6967 request->ie = (void *)(request->ssids + n_ssids);
6968 else
6969 request->ie = (void *)(request->channels + n_channels);
6970 }
6971
6972 if (n_match_sets) {
6973 if (request->ie)
6974 request->match_sets = (void *)(request->ie + ie_len);
6975 else if (n_ssids)
6976 request->match_sets =
6977 (void *)(request->ssids + n_ssids);
6978 else
6979 request->match_sets =
6980 (void *)(request->channels + n_channels);
6981 }
6982 request->n_match_sets = n_match_sets;
6983
6984 if (n_match_sets)
6985 request->scan_plans = (void *)(request->match_sets +
6986 n_match_sets);
6987 else if (request->ie)
6988 request->scan_plans = (void *)(request->ie + ie_len);
6989 else if (n_ssids)
6990 request->scan_plans = (void *)(request->ssids + n_ssids);
6991 else
6992 request->scan_plans = (void *)(request->channels + n_channels);
6993
6994 request->n_scan_plans = n_plans;
6995
6996 i = 0;
6997 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6998 /* user specified, bail out if channel not found */
6999 nla_for_each_nested(attr,
7000 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7001 tmp) {
7002 struct ieee80211_channel *chan;
7003
7004 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7005
7006 if (!chan) {
7007 err = -EINVAL;
7008 goto out_free;
7009 }
7010
7011 /* ignore disabled channels */
7012 if (chan->flags & IEEE80211_CHAN_DISABLED)
7013 continue;
7014
7015 request->channels[i] = chan;
7016 i++;
7017 }
7018 } else {
7019 /* all channels */
7020 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7021 int j;
7022
7023 if (!wiphy->bands[band])
7024 continue;
7025 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7026 struct ieee80211_channel *chan;
7027
7028 chan = &wiphy->bands[band]->channels[j];
7029
7030 if (chan->flags & IEEE80211_CHAN_DISABLED)
7031 continue;
7032
7033 request->channels[i] = chan;
7034 i++;
7035 }
7036 }
7037 }
7038
7039 if (!i) {
7040 err = -EINVAL;
7041 goto out_free;
7042 }
7043
7044 request->n_channels = i;
7045
7046 i = 0;
7047 if (n_ssids) {
7048 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7049 tmp) {
7050 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7051 err = -EINVAL;
7052 goto out_free;
7053 }
7054 request->ssids[i].ssid_len = nla_len(attr);
7055 memcpy(request->ssids[i].ssid, nla_data(attr),
7056 nla_len(attr));
7057 i++;
7058 }
7059 }
7060
7061 i = 0;
7062 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7063 nla_for_each_nested(attr,
7064 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7065 tmp) {
7066 struct nlattr *ssid, *rssi;
7067
7068 err = nla_parse_nested(tb,
7069 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7070 attr, nl80211_match_policy);
7071 if (err)
7072 goto out_free;
7073 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7074 if (ssid) {
7075 if (WARN_ON(i >= n_match_sets)) {
7076 /* this indicates a programming error,
7077 * the loop above should have verified
7078 * things properly
7079 */
7080 err = -EINVAL;
7081 goto out_free;
7082 }
7083
7084 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7085 err = -EINVAL;
7086 goto out_free;
7087 }
7088 memcpy(request->match_sets[i].ssid.ssid,
7089 nla_data(ssid), nla_len(ssid));
7090 request->match_sets[i].ssid.ssid_len =
7091 nla_len(ssid);
7092 /* special attribute - old implementation w/a */
7093 request->match_sets[i].rssi_thold =
7094 default_match_rssi;
7095 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7096 if (rssi)
7097 request->match_sets[i].rssi_thold =
7098 nla_get_s32(rssi);
7099 }
7100 i++;
7101 }
7102
7103 /* there was no other matchset, so the RSSI one is alone */
7104 if (i == 0 && n_match_sets)
7105 request->match_sets[0].rssi_thold = default_match_rssi;
7106
7107 request->min_rssi_thold = INT_MAX;
7108 for (i = 0; i < n_match_sets; i++)
7109 request->min_rssi_thold =
7110 min(request->match_sets[i].rssi_thold,
7111 request->min_rssi_thold);
7112 } else {
7113 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7114 }
7115
7116 if (ie_len) {
7117 request->ie_len = ie_len;
7118 memcpy((void *)request->ie,
7119 nla_data(attrs[NL80211_ATTR_IE]),
7120 request->ie_len);
7121 }
7122
7123 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7124 request->flags = nla_get_u32(
7125 attrs[NL80211_ATTR_SCAN_FLAGS]);
7126 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7127 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7128 err = -EOPNOTSUPP;
7129 goto out_free;
7130 }
7131
7132 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7133 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7134
7135 if (!wdev) /* must be net-detect */
7136 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7137
7138 if (!(wiphy->features & flg)) {
7139 err = -EOPNOTSUPP;
7140 goto out_free;
7141 }
7142
7143 if (wdev && wdev->current_bss) {
7144 err = -EOPNOTSUPP;
7145 goto out_free;
7146 }
7147
7148 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7149 request->mac_addr_mask);
7150 if (err)
7151 goto out_free;
7152 }
7153 }
7154
7155 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7156 request->delay =
7157 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7158
7159 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7160 if (err)
7161 goto out_free;
7162
7163 request->scan_start = jiffies;
7164
7165 return request;
7166
7167 out_free:
7168 kfree(request);
7169 return ERR_PTR(err);
7170 }
7171
7172 static int nl80211_start_sched_scan(struct sk_buff *skb,
7173 struct genl_info *info)
7174 {
7175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7176 struct net_device *dev = info->user_ptr[1];
7177 struct wireless_dev *wdev = dev->ieee80211_ptr;
7178 struct cfg80211_sched_scan_request *sched_scan_req;
7179 int err;
7180
7181 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7182 !rdev->ops->sched_scan_start)
7183 return -EOPNOTSUPP;
7184
7185 if (rdev->sched_scan_req)
7186 return -EINPROGRESS;
7187
7188 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7189 info->attrs);
7190
7191 err = PTR_ERR_OR_ZERO(sched_scan_req);
7192 if (err)
7193 goto out_err;
7194
7195 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7196 if (err)
7197 goto out_free;
7198
7199 sched_scan_req->dev = dev;
7200 sched_scan_req->wiphy = &rdev->wiphy;
7201
7202 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7203 sched_scan_req->owner_nlportid = info->snd_portid;
7204
7205 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7206
7207 nl80211_send_sched_scan(rdev, dev,
7208 NL80211_CMD_START_SCHED_SCAN);
7209 return 0;
7210
7211 out_free:
7212 kfree(sched_scan_req);
7213 out_err:
7214 return err;
7215 }
7216
7217 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7218 struct genl_info *info)
7219 {
7220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7221
7222 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7223 !rdev->ops->sched_scan_stop)
7224 return -EOPNOTSUPP;
7225
7226 return __cfg80211_stop_sched_scan(rdev, false);
7227 }
7228
7229 static int nl80211_start_radar_detection(struct sk_buff *skb,
7230 struct genl_info *info)
7231 {
7232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7233 struct net_device *dev = info->user_ptr[1];
7234 struct wireless_dev *wdev = dev->ieee80211_ptr;
7235 struct cfg80211_chan_def chandef;
7236 enum nl80211_dfs_regions dfs_region;
7237 unsigned int cac_time_ms;
7238 int err;
7239
7240 dfs_region = reg_get_dfs_region(wdev->wiphy);
7241 if (dfs_region == NL80211_DFS_UNSET)
7242 return -EINVAL;
7243
7244 err = nl80211_parse_chandef(rdev, info, &chandef);
7245 if (err)
7246 return err;
7247
7248 if (netif_carrier_ok(dev))
7249 return -EBUSY;
7250
7251 if (wdev->cac_started)
7252 return -EBUSY;
7253
7254 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7255 wdev->iftype);
7256 if (err < 0)
7257 return err;
7258
7259 if (err == 0)
7260 return -EINVAL;
7261
7262 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7263 return -EINVAL;
7264
7265 if (!rdev->ops->start_radar_detection)
7266 return -EOPNOTSUPP;
7267
7268 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7269 if (WARN_ON(!cac_time_ms))
7270 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7271
7272 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7273 if (!err) {
7274 wdev->chandef = chandef;
7275 wdev->cac_started = true;
7276 wdev->cac_start_time = jiffies;
7277 wdev->cac_time_ms = cac_time_ms;
7278 }
7279 return err;
7280 }
7281
7282 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7283 {
7284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7285 struct net_device *dev = info->user_ptr[1];
7286 struct wireless_dev *wdev = dev->ieee80211_ptr;
7287 struct cfg80211_csa_settings params;
7288 /* csa_attrs is defined static to avoid waste of stack size - this
7289 * function is called under RTNL lock, so this should not be a problem.
7290 */
7291 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7292 int err;
7293 bool need_new_beacon = false;
7294 int len, i;
7295 u32 cs_count;
7296
7297 if (!rdev->ops->channel_switch ||
7298 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7299 return -EOPNOTSUPP;
7300
7301 switch (dev->ieee80211_ptr->iftype) {
7302 case NL80211_IFTYPE_AP:
7303 case NL80211_IFTYPE_P2P_GO:
7304 need_new_beacon = true;
7305
7306 /* useless if AP is not running */
7307 if (!wdev->beacon_interval)
7308 return -ENOTCONN;
7309 break;
7310 case NL80211_IFTYPE_ADHOC:
7311 if (!wdev->ssid_len)
7312 return -ENOTCONN;
7313 break;
7314 case NL80211_IFTYPE_MESH_POINT:
7315 if (!wdev->mesh_id_len)
7316 return -ENOTCONN;
7317 break;
7318 default:
7319 return -EOPNOTSUPP;
7320 }
7321
7322 memset(&params, 0, sizeof(params));
7323
7324 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7325 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7326 return -EINVAL;
7327
7328 /* only important for AP, IBSS and mesh create IEs internally */
7329 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7330 return -EINVAL;
7331
7332 /* Even though the attribute is u32, the specification says
7333 * u8, so let's make sure we don't overflow.
7334 */
7335 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7336 if (cs_count > 255)
7337 return -EINVAL;
7338
7339 params.count = cs_count;
7340
7341 if (!need_new_beacon)
7342 goto skip_beacons;
7343
7344 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7345 if (err)
7346 return err;
7347
7348 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7349 info->attrs[NL80211_ATTR_CSA_IES],
7350 nl80211_policy);
7351 if (err)
7352 return err;
7353
7354 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7355 if (err)
7356 return err;
7357
7358 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7359 return -EINVAL;
7360
7361 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7362 if (!len || (len % sizeof(u16)))
7363 return -EINVAL;
7364
7365 params.n_counter_offsets_beacon = len / sizeof(u16);
7366 if (rdev->wiphy.max_num_csa_counters &&
7367 (params.n_counter_offsets_beacon >
7368 rdev->wiphy.max_num_csa_counters))
7369 return -EINVAL;
7370
7371 params.counter_offsets_beacon =
7372 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7373
7374 /* sanity checks - counters should fit and be the same */
7375 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7376 u16 offset = params.counter_offsets_beacon[i];
7377
7378 if (offset >= params.beacon_csa.tail_len)
7379 return -EINVAL;
7380
7381 if (params.beacon_csa.tail[offset] != params.count)
7382 return -EINVAL;
7383 }
7384
7385 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7386 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7387 if (!len || (len % sizeof(u16)))
7388 return -EINVAL;
7389
7390 params.n_counter_offsets_presp = len / sizeof(u16);
7391 if (rdev->wiphy.max_num_csa_counters &&
7392 (params.n_counter_offsets_presp >
7393 rdev->wiphy.max_num_csa_counters))
7394 return -EINVAL;
7395
7396 params.counter_offsets_presp =
7397 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7398
7399 /* sanity checks - counters should fit and be the same */
7400 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7401 u16 offset = params.counter_offsets_presp[i];
7402
7403 if (offset >= params.beacon_csa.probe_resp_len)
7404 return -EINVAL;
7405
7406 if (params.beacon_csa.probe_resp[offset] !=
7407 params.count)
7408 return -EINVAL;
7409 }
7410 }
7411
7412 skip_beacons:
7413 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7414 if (err)
7415 return err;
7416
7417 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7418 wdev->iftype))
7419 return -EINVAL;
7420
7421 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7422 &params.chandef,
7423 wdev->iftype);
7424 if (err < 0)
7425 return err;
7426
7427 if (err > 0)
7428 params.radar_required = true;
7429
7430 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7431 params.block_tx = true;
7432
7433 wdev_lock(wdev);
7434 err = rdev_channel_switch(rdev, dev, &params);
7435 wdev_unlock(wdev);
7436
7437 return err;
7438 }
7439
7440 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7441 u32 seq, int flags,
7442 struct cfg80211_registered_device *rdev,
7443 struct wireless_dev *wdev,
7444 struct cfg80211_internal_bss *intbss)
7445 {
7446 struct cfg80211_bss *res = &intbss->pub;
7447 const struct cfg80211_bss_ies *ies;
7448 void *hdr;
7449 struct nlattr *bss;
7450
7451 ASSERT_WDEV_LOCK(wdev);
7452
7453 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7454 NL80211_CMD_NEW_SCAN_RESULTS);
7455 if (!hdr)
7456 return -1;
7457
7458 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7459
7460 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7461 goto nla_put_failure;
7462 if (wdev->netdev &&
7463 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7464 goto nla_put_failure;
7465 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7466 NL80211_ATTR_PAD))
7467 goto nla_put_failure;
7468
7469 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7470 if (!bss)
7471 goto nla_put_failure;
7472 if ((!is_zero_ether_addr(res->bssid) &&
7473 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7474 goto nla_put_failure;
7475
7476 rcu_read_lock();
7477 /* indicate whether we have probe response data or not */
7478 if (rcu_access_pointer(res->proberesp_ies) &&
7479 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7480 goto fail_unlock_rcu;
7481
7482 /* this pointer prefers to be pointed to probe response data
7483 * but is always valid
7484 */
7485 ies = rcu_dereference(res->ies);
7486 if (ies) {
7487 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7488 NL80211_BSS_PAD))
7489 goto fail_unlock_rcu;
7490 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7491 ies->len, ies->data))
7492 goto fail_unlock_rcu;
7493 }
7494
7495 /* and this pointer is always (unless driver didn't know) beacon data */
7496 ies = rcu_dereference(res->beacon_ies);
7497 if (ies && ies->from_beacon) {
7498 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7499 NL80211_BSS_PAD))
7500 goto fail_unlock_rcu;
7501 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7502 ies->len, ies->data))
7503 goto fail_unlock_rcu;
7504 }
7505 rcu_read_unlock();
7506
7507 if (res->beacon_interval &&
7508 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7509 goto nla_put_failure;
7510 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7511 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7512 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7513 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7514 jiffies_to_msecs(jiffies - intbss->ts)))
7515 goto nla_put_failure;
7516
7517 if (intbss->parent_tsf &&
7518 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7519 intbss->parent_tsf, NL80211_BSS_PAD) ||
7520 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7521 intbss->parent_bssid)))
7522 goto nla_put_failure;
7523
7524 if (intbss->ts_boottime &&
7525 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7526 intbss->ts_boottime, NL80211_BSS_PAD))
7527 goto nla_put_failure;
7528
7529 switch (rdev->wiphy.signal_type) {
7530 case CFG80211_SIGNAL_TYPE_MBM:
7531 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7532 goto nla_put_failure;
7533 break;
7534 case CFG80211_SIGNAL_TYPE_UNSPEC:
7535 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7536 goto nla_put_failure;
7537 break;
7538 default:
7539 break;
7540 }
7541
7542 switch (wdev->iftype) {
7543 case NL80211_IFTYPE_P2P_CLIENT:
7544 case NL80211_IFTYPE_STATION:
7545 if (intbss == wdev->current_bss &&
7546 nla_put_u32(msg, NL80211_BSS_STATUS,
7547 NL80211_BSS_STATUS_ASSOCIATED))
7548 goto nla_put_failure;
7549 break;
7550 case NL80211_IFTYPE_ADHOC:
7551 if (intbss == wdev->current_bss &&
7552 nla_put_u32(msg, NL80211_BSS_STATUS,
7553 NL80211_BSS_STATUS_IBSS_JOINED))
7554 goto nla_put_failure;
7555 break;
7556 default:
7557 break;
7558 }
7559
7560 nla_nest_end(msg, bss);
7561
7562 genlmsg_end(msg, hdr);
7563 return 0;
7564
7565 fail_unlock_rcu:
7566 rcu_read_unlock();
7567 nla_put_failure:
7568 genlmsg_cancel(msg, hdr);
7569 return -EMSGSIZE;
7570 }
7571
7572 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7573 {
7574 struct cfg80211_registered_device *rdev;
7575 struct cfg80211_internal_bss *scan;
7576 struct wireless_dev *wdev;
7577 int start = cb->args[2], idx = 0;
7578 int err;
7579
7580 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7581 if (err)
7582 return err;
7583
7584 wdev_lock(wdev);
7585 spin_lock_bh(&rdev->bss_lock);
7586 cfg80211_bss_expire(rdev);
7587
7588 cb->seq = rdev->bss_generation;
7589
7590 list_for_each_entry(scan, &rdev->bss_list, list) {
7591 if (++idx <= start)
7592 continue;
7593 if (nl80211_send_bss(skb, cb,
7594 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7595 rdev, wdev, scan) < 0) {
7596 idx--;
7597 break;
7598 }
7599 }
7600
7601 spin_unlock_bh(&rdev->bss_lock);
7602 wdev_unlock(wdev);
7603
7604 cb->args[2] = idx;
7605 nl80211_finish_wdev_dump(rdev);
7606
7607 return skb->len;
7608 }
7609
7610 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7611 int flags, struct net_device *dev,
7612 bool allow_radio_stats,
7613 struct survey_info *survey)
7614 {
7615 void *hdr;
7616 struct nlattr *infoattr;
7617
7618 /* skip radio stats if userspace didn't request them */
7619 if (!survey->channel && !allow_radio_stats)
7620 return 0;
7621
7622 hdr = nl80211hdr_put(msg, portid, seq, flags,
7623 NL80211_CMD_NEW_SURVEY_RESULTS);
7624 if (!hdr)
7625 return -ENOMEM;
7626
7627 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7628 goto nla_put_failure;
7629
7630 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7631 if (!infoattr)
7632 goto nla_put_failure;
7633
7634 if (survey->channel &&
7635 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7636 survey->channel->center_freq))
7637 goto nla_put_failure;
7638
7639 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7640 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7641 goto nla_put_failure;
7642 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7643 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7644 goto nla_put_failure;
7645 if ((survey->filled & SURVEY_INFO_TIME) &&
7646 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7647 survey->time, NL80211_SURVEY_INFO_PAD))
7648 goto nla_put_failure;
7649 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7650 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7651 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7652 goto nla_put_failure;
7653 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7654 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7655 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7656 goto nla_put_failure;
7657 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7658 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7659 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7660 goto nla_put_failure;
7661 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7662 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7663 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7664 goto nla_put_failure;
7665 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7666 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7667 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7668 goto nla_put_failure;
7669
7670 nla_nest_end(msg, infoattr);
7671
7672 genlmsg_end(msg, hdr);
7673 return 0;
7674
7675 nla_put_failure:
7676 genlmsg_cancel(msg, hdr);
7677 return -EMSGSIZE;
7678 }
7679
7680 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7681 {
7682 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7683 struct survey_info survey;
7684 struct cfg80211_registered_device *rdev;
7685 struct wireless_dev *wdev;
7686 int survey_idx = cb->args[2];
7687 int res;
7688 bool radio_stats;
7689
7690 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7691 if (res)
7692 return res;
7693
7694 /* prepare_wdev_dump parsed the attributes */
7695 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7696
7697 if (!wdev->netdev) {
7698 res = -EINVAL;
7699 goto out_err;
7700 }
7701
7702 if (!rdev->ops->dump_survey) {
7703 res = -EOPNOTSUPP;
7704 goto out_err;
7705 }
7706
7707 while (1) {
7708 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7709 if (res == -ENOENT)
7710 break;
7711 if (res)
7712 goto out_err;
7713
7714 /* don't send disabled channels, but do send non-channel data */
7715 if (survey.channel &&
7716 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7717 survey_idx++;
7718 continue;
7719 }
7720
7721 if (nl80211_send_survey(skb,
7722 NETLINK_CB(cb->skb).portid,
7723 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7724 wdev->netdev, radio_stats, &survey) < 0)
7725 goto out;
7726 survey_idx++;
7727 }
7728
7729 out:
7730 cb->args[2] = survey_idx;
7731 res = skb->len;
7732 out_err:
7733 nl80211_finish_wdev_dump(rdev);
7734 return res;
7735 }
7736
7737 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7738 {
7739 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7740 NL80211_WPA_VERSION_2));
7741 }
7742
7743 static int nl80211_authenticate(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 ieee80211_channel *chan;
7748 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7749 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7750 enum nl80211_auth_type auth_type;
7751 struct key_parse key;
7752 bool local_state_change;
7753
7754 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7755 return -EINVAL;
7756
7757 if (!info->attrs[NL80211_ATTR_MAC])
7758 return -EINVAL;
7759
7760 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7761 return -EINVAL;
7762
7763 if (!info->attrs[NL80211_ATTR_SSID])
7764 return -EINVAL;
7765
7766 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7767 return -EINVAL;
7768
7769 err = nl80211_parse_key(info, &key);
7770 if (err)
7771 return err;
7772
7773 if (key.idx >= 0) {
7774 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7775 return -EINVAL;
7776 if (!key.p.key || !key.p.key_len)
7777 return -EINVAL;
7778 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7779 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7780 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7781 key.p.key_len != WLAN_KEY_LEN_WEP104))
7782 return -EINVAL;
7783 if (key.idx > 3)
7784 return -EINVAL;
7785 } else {
7786 key.p.key_len = 0;
7787 key.p.key = NULL;
7788 }
7789
7790 if (key.idx >= 0) {
7791 int i;
7792 bool ok = false;
7793
7794 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7795 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7796 ok = true;
7797 break;
7798 }
7799 }
7800 if (!ok)
7801 return -EINVAL;
7802 }
7803
7804 if (!rdev->ops->auth)
7805 return -EOPNOTSUPP;
7806
7807 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7808 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7809 return -EOPNOTSUPP;
7810
7811 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7812 chan = nl80211_get_valid_chan(&rdev->wiphy,
7813 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7814 if (!chan)
7815 return -EINVAL;
7816
7817 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7818 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7819
7820 if (info->attrs[NL80211_ATTR_IE]) {
7821 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7822 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7823 }
7824
7825 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7826 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7827 return -EINVAL;
7828
7829 if ((auth_type == NL80211_AUTHTYPE_SAE ||
7830 auth_type == NL80211_AUTHTYPE_FILS_SK ||
7831 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7832 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7833 !info->attrs[NL80211_ATTR_AUTH_DATA])
7834 return -EINVAL;
7835
7836 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7837 if (auth_type != NL80211_AUTHTYPE_SAE &&
7838 auth_type != NL80211_AUTHTYPE_FILS_SK &&
7839 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7840 auth_type != NL80211_AUTHTYPE_FILS_PK)
7841 return -EINVAL;
7842 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7843 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7844 /* need to include at least Auth Transaction and Status Code */
7845 if (auth_data_len < 4)
7846 return -EINVAL;
7847 }
7848
7849 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7850
7851 /*
7852 * Since we no longer track auth state, ignore
7853 * requests to only change local state.
7854 */
7855 if (local_state_change)
7856 return 0;
7857
7858 wdev_lock(dev->ieee80211_ptr);
7859 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7860 ssid, ssid_len, ie, ie_len,
7861 key.p.key, key.p.key_len, key.idx,
7862 auth_data, auth_data_len);
7863 wdev_unlock(dev->ieee80211_ptr);
7864 return err;
7865 }
7866
7867 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7868 struct genl_info *info,
7869 struct cfg80211_crypto_settings *settings,
7870 int cipher_limit)
7871 {
7872 memset(settings, 0, sizeof(*settings));
7873
7874 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7875
7876 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7877 u16 proto;
7878
7879 proto = nla_get_u16(
7880 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7881 settings->control_port_ethertype = cpu_to_be16(proto);
7882 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7883 proto != ETH_P_PAE)
7884 return -EINVAL;
7885 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7886 settings->control_port_no_encrypt = true;
7887 } else
7888 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7889
7890 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7891 void *data;
7892 int len, i;
7893
7894 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7895 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7896 settings->n_ciphers_pairwise = len / sizeof(u32);
7897
7898 if (len % sizeof(u32))
7899 return -EINVAL;
7900
7901 if (settings->n_ciphers_pairwise > cipher_limit)
7902 return -EINVAL;
7903
7904 memcpy(settings->ciphers_pairwise, data, len);
7905
7906 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7907 if (!cfg80211_supported_cipher_suite(
7908 &rdev->wiphy,
7909 settings->ciphers_pairwise[i]))
7910 return -EINVAL;
7911 }
7912
7913 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7914 settings->cipher_group =
7915 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7916 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7917 settings->cipher_group))
7918 return -EINVAL;
7919 }
7920
7921 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7922 settings->wpa_versions =
7923 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7924 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7925 return -EINVAL;
7926 }
7927
7928 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7929 void *data;
7930 int len;
7931
7932 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7933 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7934 settings->n_akm_suites = len / sizeof(u32);
7935
7936 if (len % sizeof(u32))
7937 return -EINVAL;
7938
7939 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7940 return -EINVAL;
7941
7942 memcpy(settings->akm_suites, data, len);
7943 }
7944
7945 return 0;
7946 }
7947
7948 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7949 {
7950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7951 struct net_device *dev = info->user_ptr[1];
7952 struct ieee80211_channel *chan;
7953 struct cfg80211_assoc_request req = {};
7954 const u8 *bssid, *ssid;
7955 int err, ssid_len = 0;
7956
7957 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7958 return -EINVAL;
7959
7960 if (!info->attrs[NL80211_ATTR_MAC] ||
7961 !info->attrs[NL80211_ATTR_SSID] ||
7962 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7963 return -EINVAL;
7964
7965 if (!rdev->ops->assoc)
7966 return -EOPNOTSUPP;
7967
7968 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7969 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7970 return -EOPNOTSUPP;
7971
7972 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7973
7974 chan = nl80211_get_valid_chan(&rdev->wiphy,
7975 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7976 if (!chan)
7977 return -EINVAL;
7978
7979 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7980 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7981
7982 if (info->attrs[NL80211_ATTR_IE]) {
7983 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7984 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7985 }
7986
7987 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7988 enum nl80211_mfp mfp =
7989 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7990 if (mfp == NL80211_MFP_REQUIRED)
7991 req.use_mfp = true;
7992 else if (mfp != NL80211_MFP_NO)
7993 return -EINVAL;
7994 }
7995
7996 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7997 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7998
7999 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8000 req.flags |= ASSOC_REQ_DISABLE_HT;
8001
8002 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8003 memcpy(&req.ht_capa_mask,
8004 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8005 sizeof(req.ht_capa_mask));
8006
8007 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8008 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8009 return -EINVAL;
8010 memcpy(&req.ht_capa,
8011 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8012 sizeof(req.ht_capa));
8013 }
8014
8015 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8016 req.flags |= ASSOC_REQ_DISABLE_VHT;
8017
8018 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8019 memcpy(&req.vht_capa_mask,
8020 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8021 sizeof(req.vht_capa_mask));
8022
8023 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8024 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8025 return -EINVAL;
8026 memcpy(&req.vht_capa,
8027 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8028 sizeof(req.vht_capa));
8029 }
8030
8031 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8032 if (!((rdev->wiphy.features &
8033 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8034 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8035 !wiphy_ext_feature_isset(&rdev->wiphy,
8036 NL80211_EXT_FEATURE_RRM))
8037 return -EINVAL;
8038 req.flags |= ASSOC_REQ_USE_RRM;
8039 }
8040
8041 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8042 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8043 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8044 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8045 return -EINVAL;
8046 req.fils_nonces =
8047 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8048 }
8049
8050 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8051 if (!err) {
8052 wdev_lock(dev->ieee80211_ptr);
8053 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8054 ssid, ssid_len, &req);
8055 wdev_unlock(dev->ieee80211_ptr);
8056 }
8057
8058 return err;
8059 }
8060
8061 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8062 {
8063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8064 struct net_device *dev = info->user_ptr[1];
8065 const u8 *ie = NULL, *bssid;
8066 int ie_len = 0, err;
8067 u16 reason_code;
8068 bool local_state_change;
8069
8070 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8071 return -EINVAL;
8072
8073 if (!info->attrs[NL80211_ATTR_MAC])
8074 return -EINVAL;
8075
8076 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8077 return -EINVAL;
8078
8079 if (!rdev->ops->deauth)
8080 return -EOPNOTSUPP;
8081
8082 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8083 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8084 return -EOPNOTSUPP;
8085
8086 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8087
8088 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8089 if (reason_code == 0) {
8090 /* Reason Code 0 is reserved */
8091 return -EINVAL;
8092 }
8093
8094 if (info->attrs[NL80211_ATTR_IE]) {
8095 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8096 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8097 }
8098
8099 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8100
8101 wdev_lock(dev->ieee80211_ptr);
8102 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8103 local_state_change);
8104 wdev_unlock(dev->ieee80211_ptr);
8105 return err;
8106 }
8107
8108 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8109 {
8110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8111 struct net_device *dev = info->user_ptr[1];
8112 const u8 *ie = NULL, *bssid;
8113 int ie_len = 0, err;
8114 u16 reason_code;
8115 bool local_state_change;
8116
8117 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8118 return -EINVAL;
8119
8120 if (!info->attrs[NL80211_ATTR_MAC])
8121 return -EINVAL;
8122
8123 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8124 return -EINVAL;
8125
8126 if (!rdev->ops->disassoc)
8127 return -EOPNOTSUPP;
8128
8129 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8130 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8131 return -EOPNOTSUPP;
8132
8133 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8134
8135 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8136 if (reason_code == 0) {
8137 /* Reason Code 0 is reserved */
8138 return -EINVAL;
8139 }
8140
8141 if (info->attrs[NL80211_ATTR_IE]) {
8142 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8143 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8144 }
8145
8146 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8147
8148 wdev_lock(dev->ieee80211_ptr);
8149 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8150 local_state_change);
8151 wdev_unlock(dev->ieee80211_ptr);
8152 return err;
8153 }
8154
8155 static bool
8156 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8157 int mcast_rate[NUM_NL80211_BANDS],
8158 int rateval)
8159 {
8160 struct wiphy *wiphy = &rdev->wiphy;
8161 bool found = false;
8162 int band, i;
8163
8164 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8165 struct ieee80211_supported_band *sband;
8166
8167 sband = wiphy->bands[band];
8168 if (!sband)
8169 continue;
8170
8171 for (i = 0; i < sband->n_bitrates; i++) {
8172 if (sband->bitrates[i].bitrate == rateval) {
8173 mcast_rate[band] = i + 1;
8174 found = true;
8175 break;
8176 }
8177 }
8178 }
8179
8180 return found;
8181 }
8182
8183 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8184 {
8185 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8186 struct net_device *dev = info->user_ptr[1];
8187 struct cfg80211_ibss_params ibss;
8188 struct wiphy *wiphy;
8189 struct cfg80211_cached_keys *connkeys = NULL;
8190 int err;
8191
8192 memset(&ibss, 0, sizeof(ibss));
8193
8194 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8195 return -EINVAL;
8196
8197 if (!info->attrs[NL80211_ATTR_SSID] ||
8198 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8199 return -EINVAL;
8200
8201 ibss.beacon_interval = 100;
8202
8203 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8204 ibss.beacon_interval =
8205 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8206
8207 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8208 ibss.beacon_interval);
8209 if (err)
8210 return err;
8211
8212 if (!rdev->ops->join_ibss)
8213 return -EOPNOTSUPP;
8214
8215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8216 return -EOPNOTSUPP;
8217
8218 wiphy = &rdev->wiphy;
8219
8220 if (info->attrs[NL80211_ATTR_MAC]) {
8221 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8222
8223 if (!is_valid_ether_addr(ibss.bssid))
8224 return -EINVAL;
8225 }
8226 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8227 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8228
8229 if (info->attrs[NL80211_ATTR_IE]) {
8230 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8231 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8232 }
8233
8234 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8235 if (err)
8236 return err;
8237
8238 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8239 NL80211_IFTYPE_ADHOC))
8240 return -EINVAL;
8241
8242 switch (ibss.chandef.width) {
8243 case NL80211_CHAN_WIDTH_5:
8244 case NL80211_CHAN_WIDTH_10:
8245 case NL80211_CHAN_WIDTH_20_NOHT:
8246 break;
8247 case NL80211_CHAN_WIDTH_20:
8248 case NL80211_CHAN_WIDTH_40:
8249 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8250 return -EINVAL;
8251 break;
8252 case NL80211_CHAN_WIDTH_80:
8253 case NL80211_CHAN_WIDTH_80P80:
8254 case NL80211_CHAN_WIDTH_160:
8255 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8256 return -EINVAL;
8257 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8258 NL80211_EXT_FEATURE_VHT_IBSS))
8259 return -EINVAL;
8260 break;
8261 default:
8262 return -EINVAL;
8263 }
8264
8265 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8266 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8267
8268 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8269 u8 *rates =
8270 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8271 int n_rates =
8272 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8273 struct ieee80211_supported_band *sband =
8274 wiphy->bands[ibss.chandef.chan->band];
8275
8276 err = ieee80211_get_ratemask(sband, rates, n_rates,
8277 &ibss.basic_rates);
8278 if (err)
8279 return err;
8280 }
8281
8282 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8283 memcpy(&ibss.ht_capa_mask,
8284 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8285 sizeof(ibss.ht_capa_mask));
8286
8287 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8288 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8289 return -EINVAL;
8290 memcpy(&ibss.ht_capa,
8291 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8292 sizeof(ibss.ht_capa));
8293 }
8294
8295 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8296 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8297 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8298 return -EINVAL;
8299
8300 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8301 bool no_ht = false;
8302
8303 connkeys = nl80211_parse_connkeys(rdev,
8304 info->attrs[NL80211_ATTR_KEYS],
8305 &no_ht);
8306 if (IS_ERR(connkeys))
8307 return PTR_ERR(connkeys);
8308
8309 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8310 no_ht) {
8311 kzfree(connkeys);
8312 return -EINVAL;
8313 }
8314 }
8315
8316 ibss.control_port =
8317 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8318
8319 ibss.userspace_handles_dfs =
8320 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8321
8322 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8323 if (err)
8324 kzfree(connkeys);
8325 return err;
8326 }
8327
8328 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8329 {
8330 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8331 struct net_device *dev = info->user_ptr[1];
8332
8333 if (!rdev->ops->leave_ibss)
8334 return -EOPNOTSUPP;
8335
8336 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8337 return -EOPNOTSUPP;
8338
8339 return cfg80211_leave_ibss(rdev, dev, false);
8340 }
8341
8342 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8343 {
8344 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8345 struct net_device *dev = info->user_ptr[1];
8346 int mcast_rate[NUM_NL80211_BANDS];
8347 u32 nla_rate;
8348 int err;
8349
8350 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8351 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8352 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8353 return -EOPNOTSUPP;
8354
8355 if (!rdev->ops->set_mcast_rate)
8356 return -EOPNOTSUPP;
8357
8358 memset(mcast_rate, 0, sizeof(mcast_rate));
8359
8360 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8361 return -EINVAL;
8362
8363 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8364 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8365 return -EINVAL;
8366
8367 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8368
8369 return err;
8370 }
8371
8372 static struct sk_buff *
8373 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8374 struct wireless_dev *wdev, int approxlen,
8375 u32 portid, u32 seq, enum nl80211_commands cmd,
8376 enum nl80211_attrs attr,
8377 const struct nl80211_vendor_cmd_info *info,
8378 gfp_t gfp)
8379 {
8380 struct sk_buff *skb;
8381 void *hdr;
8382 struct nlattr *data;
8383
8384 skb = nlmsg_new(approxlen + 100, gfp);
8385 if (!skb)
8386 return NULL;
8387
8388 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8389 if (!hdr) {
8390 kfree_skb(skb);
8391 return NULL;
8392 }
8393
8394 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8395 goto nla_put_failure;
8396
8397 if (info) {
8398 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8399 info->vendor_id))
8400 goto nla_put_failure;
8401 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8402 info->subcmd))
8403 goto nla_put_failure;
8404 }
8405
8406 if (wdev) {
8407 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8408 wdev_id(wdev), NL80211_ATTR_PAD))
8409 goto nla_put_failure;
8410 if (wdev->netdev &&
8411 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8412 wdev->netdev->ifindex))
8413 goto nla_put_failure;
8414 }
8415
8416 data = nla_nest_start(skb, attr);
8417 if (!data)
8418 goto nla_put_failure;
8419
8420 ((void **)skb->cb)[0] = rdev;
8421 ((void **)skb->cb)[1] = hdr;
8422 ((void **)skb->cb)[2] = data;
8423
8424 return skb;
8425
8426 nla_put_failure:
8427 kfree_skb(skb);
8428 return NULL;
8429 }
8430
8431 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8432 struct wireless_dev *wdev,
8433 enum nl80211_commands cmd,
8434 enum nl80211_attrs attr,
8435 int vendor_event_idx,
8436 int approxlen, gfp_t gfp)
8437 {
8438 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8439 const struct nl80211_vendor_cmd_info *info;
8440
8441 switch (cmd) {
8442 case NL80211_CMD_TESTMODE:
8443 if (WARN_ON(vendor_event_idx != -1))
8444 return NULL;
8445 info = NULL;
8446 break;
8447 case NL80211_CMD_VENDOR:
8448 if (WARN_ON(vendor_event_idx < 0 ||
8449 vendor_event_idx >= wiphy->n_vendor_events))
8450 return NULL;
8451 info = &wiphy->vendor_events[vendor_event_idx];
8452 break;
8453 default:
8454 WARN_ON(1);
8455 return NULL;
8456 }
8457
8458 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8459 cmd, attr, info, gfp);
8460 }
8461 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8462
8463 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8464 {
8465 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8466 void *hdr = ((void **)skb->cb)[1];
8467 struct nlattr *data = ((void **)skb->cb)[2];
8468 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8469
8470 /* clear CB data for netlink core to own from now on */
8471 memset(skb->cb, 0, sizeof(skb->cb));
8472
8473 nla_nest_end(skb, data);
8474 genlmsg_end(skb, hdr);
8475
8476 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8477 mcgrp = NL80211_MCGRP_VENDOR;
8478
8479 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8480 mcgrp, gfp);
8481 }
8482 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8483
8484 #ifdef CONFIG_NL80211_TESTMODE
8485 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8486 {
8487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8488 struct wireless_dev *wdev =
8489 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8490 int err;
8491
8492 if (!rdev->ops->testmode_cmd)
8493 return -EOPNOTSUPP;
8494
8495 if (IS_ERR(wdev)) {
8496 err = PTR_ERR(wdev);
8497 if (err != -EINVAL)
8498 return err;
8499 wdev = NULL;
8500 } else if (wdev->wiphy != &rdev->wiphy) {
8501 return -EINVAL;
8502 }
8503
8504 if (!info->attrs[NL80211_ATTR_TESTDATA])
8505 return -EINVAL;
8506
8507 rdev->cur_cmd_info = info;
8508 err = rdev_testmode_cmd(rdev, wdev,
8509 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8510 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8511 rdev->cur_cmd_info = NULL;
8512
8513 return err;
8514 }
8515
8516 static int nl80211_testmode_dump(struct sk_buff *skb,
8517 struct netlink_callback *cb)
8518 {
8519 struct cfg80211_registered_device *rdev;
8520 int err;
8521 long phy_idx;
8522 void *data = NULL;
8523 int data_len = 0;
8524
8525 rtnl_lock();
8526
8527 if (cb->args[0]) {
8528 /*
8529 * 0 is a valid index, but not valid for args[0],
8530 * so we need to offset by 1.
8531 */
8532 phy_idx = cb->args[0] - 1;
8533 } else {
8534 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8535
8536 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8537 attrbuf, nl80211_fam.maxattr, nl80211_policy);
8538 if (err)
8539 goto out_err;
8540
8541 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8542 if (IS_ERR(rdev)) {
8543 err = PTR_ERR(rdev);
8544 goto out_err;
8545 }
8546 phy_idx = rdev->wiphy_idx;
8547 rdev = NULL;
8548
8549 if (attrbuf[NL80211_ATTR_TESTDATA])
8550 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8551 }
8552
8553 if (cb->args[1]) {
8554 data = nla_data((void *)cb->args[1]);
8555 data_len = nla_len((void *)cb->args[1]);
8556 }
8557
8558 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8559 if (!rdev) {
8560 err = -ENOENT;
8561 goto out_err;
8562 }
8563
8564 if (!rdev->ops->testmode_dump) {
8565 err = -EOPNOTSUPP;
8566 goto out_err;
8567 }
8568
8569 while (1) {
8570 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8571 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8572 NL80211_CMD_TESTMODE);
8573 struct nlattr *tmdata;
8574
8575 if (!hdr)
8576 break;
8577
8578 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8579 genlmsg_cancel(skb, hdr);
8580 break;
8581 }
8582
8583 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8584 if (!tmdata) {
8585 genlmsg_cancel(skb, hdr);
8586 break;
8587 }
8588 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8589 nla_nest_end(skb, tmdata);
8590
8591 if (err == -ENOBUFS || err == -ENOENT) {
8592 genlmsg_cancel(skb, hdr);
8593 break;
8594 } else if (err) {
8595 genlmsg_cancel(skb, hdr);
8596 goto out_err;
8597 }
8598
8599 genlmsg_end(skb, hdr);
8600 }
8601
8602 err = skb->len;
8603 /* see above */
8604 cb->args[0] = phy_idx + 1;
8605 out_err:
8606 rtnl_unlock();
8607 return err;
8608 }
8609 #endif
8610
8611 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8612 {
8613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8614 struct net_device *dev = info->user_ptr[1];
8615 struct cfg80211_connect_params connect;
8616 struct wiphy *wiphy;
8617 struct cfg80211_cached_keys *connkeys = NULL;
8618 int err;
8619
8620 memset(&connect, 0, sizeof(connect));
8621
8622 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8623 return -EINVAL;
8624
8625 if (!info->attrs[NL80211_ATTR_SSID] ||
8626 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8627 return -EINVAL;
8628
8629 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8630 connect.auth_type =
8631 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8632 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8633 NL80211_CMD_CONNECT))
8634 return -EINVAL;
8635 } else
8636 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8637
8638 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8639
8640 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8641 NL80211_MAX_NR_CIPHER_SUITES);
8642 if (err)
8643 return err;
8644
8645 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8646 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8647 return -EOPNOTSUPP;
8648
8649 wiphy = &rdev->wiphy;
8650
8651 connect.bg_scan_period = -1;
8652 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8653 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8654 connect.bg_scan_period =
8655 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8656 }
8657
8658 if (info->attrs[NL80211_ATTR_MAC])
8659 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8660 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8661 connect.bssid_hint =
8662 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8663 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8664 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8665
8666 if (info->attrs[NL80211_ATTR_IE]) {
8667 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8668 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8669 }
8670
8671 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8672 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8673 if (connect.mfp != NL80211_MFP_REQUIRED &&
8674 connect.mfp != NL80211_MFP_NO)
8675 return -EINVAL;
8676 } else {
8677 connect.mfp = NL80211_MFP_NO;
8678 }
8679
8680 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8681 connect.prev_bssid =
8682 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8683
8684 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8685 connect.channel = nl80211_get_valid_chan(
8686 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8687 if (!connect.channel)
8688 return -EINVAL;
8689 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8690 connect.channel_hint = nl80211_get_valid_chan(
8691 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8692 if (!connect.channel_hint)
8693 return -EINVAL;
8694 }
8695
8696 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8697 connkeys = nl80211_parse_connkeys(rdev,
8698 info->attrs[NL80211_ATTR_KEYS], NULL);
8699 if (IS_ERR(connkeys))
8700 return PTR_ERR(connkeys);
8701 }
8702
8703 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8704 connect.flags |= ASSOC_REQ_DISABLE_HT;
8705
8706 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8707 memcpy(&connect.ht_capa_mask,
8708 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8709 sizeof(connect.ht_capa_mask));
8710
8711 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8712 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8713 kzfree(connkeys);
8714 return -EINVAL;
8715 }
8716 memcpy(&connect.ht_capa,
8717 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8718 sizeof(connect.ht_capa));
8719 }
8720
8721 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8722 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8723
8724 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8725 memcpy(&connect.vht_capa_mask,
8726 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8727 sizeof(connect.vht_capa_mask));
8728
8729 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8730 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8731 kzfree(connkeys);
8732 return -EINVAL;
8733 }
8734 memcpy(&connect.vht_capa,
8735 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8736 sizeof(connect.vht_capa));
8737 }
8738
8739 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8740 if (!((rdev->wiphy.features &
8741 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8742 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8743 !wiphy_ext_feature_isset(&rdev->wiphy,
8744 NL80211_EXT_FEATURE_RRM)) {
8745 kzfree(connkeys);
8746 return -EINVAL;
8747 }
8748 connect.flags |= ASSOC_REQ_USE_RRM;
8749 }
8750
8751 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8752 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8753 kzfree(connkeys);
8754 return -EOPNOTSUPP;
8755 }
8756
8757 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8758 /* bss selection makes no sense if bssid is set */
8759 if (connect.bssid) {
8760 kzfree(connkeys);
8761 return -EINVAL;
8762 }
8763
8764 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8765 wiphy, &connect.bss_select);
8766 if (err) {
8767 kzfree(connkeys);
8768 return err;
8769 }
8770 }
8771
8772 wdev_lock(dev->ieee80211_ptr);
8773 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8774 connect.prev_bssid);
8775 wdev_unlock(dev->ieee80211_ptr);
8776 if (err)
8777 kzfree(connkeys);
8778 return err;
8779 }
8780
8781 static int nl80211_update_connect_params(struct sk_buff *skb,
8782 struct genl_info *info)
8783 {
8784 struct cfg80211_connect_params connect = {};
8785 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8786 struct net_device *dev = info->user_ptr[1];
8787 struct wireless_dev *wdev = dev->ieee80211_ptr;
8788 u32 changed = 0;
8789 int ret;
8790
8791 if (!rdev->ops->update_connect_params)
8792 return -EOPNOTSUPP;
8793
8794 if (info->attrs[NL80211_ATTR_IE]) {
8795 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8796 return -EINVAL;
8797 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8798 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8799 changed |= UPDATE_ASSOC_IES;
8800 }
8801
8802 wdev_lock(dev->ieee80211_ptr);
8803 if (!wdev->current_bss)
8804 ret = -ENOLINK;
8805 else
8806 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8807 wdev_unlock(dev->ieee80211_ptr);
8808
8809 return ret;
8810 }
8811
8812 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8813 {
8814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8815 struct net_device *dev = info->user_ptr[1];
8816 u16 reason;
8817 int ret;
8818
8819 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8820 reason = WLAN_REASON_DEAUTH_LEAVING;
8821 else
8822 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8823
8824 if (reason == 0)
8825 return -EINVAL;
8826
8827 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8828 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8829 return -EOPNOTSUPP;
8830
8831 wdev_lock(dev->ieee80211_ptr);
8832 ret = cfg80211_disconnect(rdev, dev, reason, true);
8833 wdev_unlock(dev->ieee80211_ptr);
8834 return ret;
8835 }
8836
8837 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8838 {
8839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840 struct net *net;
8841 int err;
8842
8843 if (info->attrs[NL80211_ATTR_PID]) {
8844 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8845
8846 net = get_net_ns_by_pid(pid);
8847 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8848 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8849
8850 net = get_net_ns_by_fd(fd);
8851 } else {
8852 return -EINVAL;
8853 }
8854
8855 if (IS_ERR(net))
8856 return PTR_ERR(net);
8857
8858 err = 0;
8859
8860 /* check if anything to do */
8861 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8862 err = cfg80211_switch_netns(rdev, net);
8863
8864 put_net(net);
8865 return err;
8866 }
8867
8868 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8869 {
8870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8871 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8872 struct cfg80211_pmksa *pmksa) = NULL;
8873 struct net_device *dev = info->user_ptr[1];
8874 struct cfg80211_pmksa pmksa;
8875
8876 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8877
8878 if (!info->attrs[NL80211_ATTR_MAC])
8879 return -EINVAL;
8880
8881 if (!info->attrs[NL80211_ATTR_PMKID])
8882 return -EINVAL;
8883
8884 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8885 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8886
8887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8888 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8889 return -EOPNOTSUPP;
8890
8891 switch (info->genlhdr->cmd) {
8892 case NL80211_CMD_SET_PMKSA:
8893 rdev_ops = rdev->ops->set_pmksa;
8894 break;
8895 case NL80211_CMD_DEL_PMKSA:
8896 rdev_ops = rdev->ops->del_pmksa;
8897 break;
8898 default:
8899 WARN_ON(1);
8900 break;
8901 }
8902
8903 if (!rdev_ops)
8904 return -EOPNOTSUPP;
8905
8906 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8907 }
8908
8909 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8910 {
8911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8912 struct net_device *dev = info->user_ptr[1];
8913
8914 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8915 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8916 return -EOPNOTSUPP;
8917
8918 if (!rdev->ops->flush_pmksa)
8919 return -EOPNOTSUPP;
8920
8921 return rdev_flush_pmksa(rdev, dev);
8922 }
8923
8924 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8925 {
8926 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8927 struct net_device *dev = info->user_ptr[1];
8928 u8 action_code, dialog_token;
8929 u32 peer_capability = 0;
8930 u16 status_code;
8931 u8 *peer;
8932 bool initiator;
8933
8934 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8935 !rdev->ops->tdls_mgmt)
8936 return -EOPNOTSUPP;
8937
8938 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8939 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8940 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8941 !info->attrs[NL80211_ATTR_IE] ||
8942 !info->attrs[NL80211_ATTR_MAC])
8943 return -EINVAL;
8944
8945 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8946 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8947 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8948 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8949 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8950 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8951 peer_capability =
8952 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8953
8954 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8955 dialog_token, status_code, peer_capability,
8956 initiator,
8957 nla_data(info->attrs[NL80211_ATTR_IE]),
8958 nla_len(info->attrs[NL80211_ATTR_IE]));
8959 }
8960
8961 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8962 {
8963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8964 struct net_device *dev = info->user_ptr[1];
8965 enum nl80211_tdls_operation operation;
8966 u8 *peer;
8967
8968 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8969 !rdev->ops->tdls_oper)
8970 return -EOPNOTSUPP;
8971
8972 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8973 !info->attrs[NL80211_ATTR_MAC])
8974 return -EINVAL;
8975
8976 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8977 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8978
8979 return rdev_tdls_oper(rdev, dev, peer, operation);
8980 }
8981
8982 static int nl80211_remain_on_channel(struct sk_buff *skb,
8983 struct genl_info *info)
8984 {
8985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8986 struct wireless_dev *wdev = info->user_ptr[1];
8987 struct cfg80211_chan_def chandef;
8988 struct sk_buff *msg;
8989 void *hdr;
8990 u64 cookie;
8991 u32 duration;
8992 int err;
8993
8994 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8995 !info->attrs[NL80211_ATTR_DURATION])
8996 return -EINVAL;
8997
8998 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8999
9000 if (!rdev->ops->remain_on_channel ||
9001 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9002 return -EOPNOTSUPP;
9003
9004 /*
9005 * We should be on that channel for at least a minimum amount of
9006 * time (10ms) but no longer than the driver supports.
9007 */
9008 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9009 duration > rdev->wiphy.max_remain_on_channel_duration)
9010 return -EINVAL;
9011
9012 err = nl80211_parse_chandef(rdev, info, &chandef);
9013 if (err)
9014 return err;
9015
9016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9017 if (!msg)
9018 return -ENOMEM;
9019
9020 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9021 NL80211_CMD_REMAIN_ON_CHANNEL);
9022 if (!hdr) {
9023 err = -ENOBUFS;
9024 goto free_msg;
9025 }
9026
9027 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9028 duration, &cookie);
9029
9030 if (err)
9031 goto free_msg;
9032
9033 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9034 NL80211_ATTR_PAD))
9035 goto nla_put_failure;
9036
9037 genlmsg_end(msg, hdr);
9038
9039 return genlmsg_reply(msg, info);
9040
9041 nla_put_failure:
9042 err = -ENOBUFS;
9043 free_msg:
9044 nlmsg_free(msg);
9045 return err;
9046 }
9047
9048 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9049 struct genl_info *info)
9050 {
9051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9052 struct wireless_dev *wdev = info->user_ptr[1];
9053 u64 cookie;
9054
9055 if (!info->attrs[NL80211_ATTR_COOKIE])
9056 return -EINVAL;
9057
9058 if (!rdev->ops->cancel_remain_on_channel)
9059 return -EOPNOTSUPP;
9060
9061 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9062
9063 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9064 }
9065
9066 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9067 struct genl_info *info)
9068 {
9069 struct cfg80211_bitrate_mask mask;
9070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9071 struct net_device *dev = info->user_ptr[1];
9072 int err;
9073
9074 if (!rdev->ops->set_bitrate_mask)
9075 return -EOPNOTSUPP;
9076
9077 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9078 if (err)
9079 return err;
9080
9081 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9082 }
9083
9084 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9085 {
9086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9087 struct wireless_dev *wdev = info->user_ptr[1];
9088 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9089
9090 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9091 return -EINVAL;
9092
9093 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9094 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9095
9096 switch (wdev->iftype) {
9097 case NL80211_IFTYPE_STATION:
9098 case NL80211_IFTYPE_ADHOC:
9099 case NL80211_IFTYPE_P2P_CLIENT:
9100 case NL80211_IFTYPE_AP:
9101 case NL80211_IFTYPE_AP_VLAN:
9102 case NL80211_IFTYPE_MESH_POINT:
9103 case NL80211_IFTYPE_P2P_GO:
9104 case NL80211_IFTYPE_P2P_DEVICE:
9105 break;
9106 case NL80211_IFTYPE_NAN:
9107 default:
9108 return -EOPNOTSUPP;
9109 }
9110
9111 /* not much point in registering if we can't reply */
9112 if (!rdev->ops->mgmt_tx)
9113 return -EOPNOTSUPP;
9114
9115 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9116 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9117 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9118 }
9119
9120 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9121 {
9122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9123 struct wireless_dev *wdev = info->user_ptr[1];
9124 struct cfg80211_chan_def chandef;
9125 int err;
9126 void *hdr = NULL;
9127 u64 cookie;
9128 struct sk_buff *msg = NULL;
9129 struct cfg80211_mgmt_tx_params params = {
9130 .dont_wait_for_ack =
9131 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9132 };
9133
9134 if (!info->attrs[NL80211_ATTR_FRAME])
9135 return -EINVAL;
9136
9137 if (!rdev->ops->mgmt_tx)
9138 return -EOPNOTSUPP;
9139
9140 switch (wdev->iftype) {
9141 case NL80211_IFTYPE_P2P_DEVICE:
9142 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9143 return -EINVAL;
9144 case NL80211_IFTYPE_STATION:
9145 case NL80211_IFTYPE_ADHOC:
9146 case NL80211_IFTYPE_P2P_CLIENT:
9147 case NL80211_IFTYPE_AP:
9148 case NL80211_IFTYPE_AP_VLAN:
9149 case NL80211_IFTYPE_MESH_POINT:
9150 case NL80211_IFTYPE_P2P_GO:
9151 break;
9152 case NL80211_IFTYPE_NAN:
9153 default:
9154 return -EOPNOTSUPP;
9155 }
9156
9157 if (info->attrs[NL80211_ATTR_DURATION]) {
9158 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9159 return -EINVAL;
9160 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9161
9162 /*
9163 * We should wait on the channel for at least a minimum amount
9164 * of time (10ms) but no longer than the driver supports.
9165 */
9166 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9167 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9168 return -EINVAL;
9169 }
9170
9171 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9172
9173 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9174 return -EINVAL;
9175
9176 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9177
9178 /* get the channel if any has been specified, otherwise pass NULL to
9179 * the driver. The latter will use the current one
9180 */
9181 chandef.chan = NULL;
9182 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9183 err = nl80211_parse_chandef(rdev, info, &chandef);
9184 if (err)
9185 return err;
9186 }
9187
9188 if (!chandef.chan && params.offchan)
9189 return -EINVAL;
9190
9191 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9192 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9193
9194 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9195 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9196 int i;
9197
9198 if (len % sizeof(u16))
9199 return -EINVAL;
9200
9201 params.n_csa_offsets = len / sizeof(u16);
9202 params.csa_offsets =
9203 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9204
9205 /* check that all the offsets fit the frame */
9206 for (i = 0; i < params.n_csa_offsets; i++) {
9207 if (params.csa_offsets[i] >= params.len)
9208 return -EINVAL;
9209 }
9210 }
9211
9212 if (!params.dont_wait_for_ack) {
9213 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9214 if (!msg)
9215 return -ENOMEM;
9216
9217 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9218 NL80211_CMD_FRAME);
9219 if (!hdr) {
9220 err = -ENOBUFS;
9221 goto free_msg;
9222 }
9223 }
9224
9225 params.chan = chandef.chan;
9226 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9227 if (err)
9228 goto free_msg;
9229
9230 if (msg) {
9231 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9232 NL80211_ATTR_PAD))
9233 goto nla_put_failure;
9234
9235 genlmsg_end(msg, hdr);
9236 return genlmsg_reply(msg, info);
9237 }
9238
9239 return 0;
9240
9241 nla_put_failure:
9242 err = -ENOBUFS;
9243 free_msg:
9244 nlmsg_free(msg);
9245 return err;
9246 }
9247
9248 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9249 {
9250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9251 struct wireless_dev *wdev = info->user_ptr[1];
9252 u64 cookie;
9253
9254 if (!info->attrs[NL80211_ATTR_COOKIE])
9255 return -EINVAL;
9256
9257 if (!rdev->ops->mgmt_tx_cancel_wait)
9258 return -EOPNOTSUPP;
9259
9260 switch (wdev->iftype) {
9261 case NL80211_IFTYPE_STATION:
9262 case NL80211_IFTYPE_ADHOC:
9263 case NL80211_IFTYPE_P2P_CLIENT:
9264 case NL80211_IFTYPE_AP:
9265 case NL80211_IFTYPE_AP_VLAN:
9266 case NL80211_IFTYPE_P2P_GO:
9267 case NL80211_IFTYPE_P2P_DEVICE:
9268 break;
9269 case NL80211_IFTYPE_NAN:
9270 default:
9271 return -EOPNOTSUPP;
9272 }
9273
9274 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9275
9276 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9277 }
9278
9279 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9280 {
9281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9282 struct wireless_dev *wdev;
9283 struct net_device *dev = info->user_ptr[1];
9284 u8 ps_state;
9285 bool state;
9286 int err;
9287
9288 if (!info->attrs[NL80211_ATTR_PS_STATE])
9289 return -EINVAL;
9290
9291 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9292
9293 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9294 return -EINVAL;
9295
9296 wdev = dev->ieee80211_ptr;
9297
9298 if (!rdev->ops->set_power_mgmt)
9299 return -EOPNOTSUPP;
9300
9301 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9302
9303 if (state == wdev->ps)
9304 return 0;
9305
9306 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9307 if (!err)
9308 wdev->ps = state;
9309 return err;
9310 }
9311
9312 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9313 {
9314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9315 enum nl80211_ps_state ps_state;
9316 struct wireless_dev *wdev;
9317 struct net_device *dev = info->user_ptr[1];
9318 struct sk_buff *msg;
9319 void *hdr;
9320 int err;
9321
9322 wdev = dev->ieee80211_ptr;
9323
9324 if (!rdev->ops->set_power_mgmt)
9325 return -EOPNOTSUPP;
9326
9327 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9328 if (!msg)
9329 return -ENOMEM;
9330
9331 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9332 NL80211_CMD_GET_POWER_SAVE);
9333 if (!hdr) {
9334 err = -ENOBUFS;
9335 goto free_msg;
9336 }
9337
9338 if (wdev->ps)
9339 ps_state = NL80211_PS_ENABLED;
9340 else
9341 ps_state = NL80211_PS_DISABLED;
9342
9343 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9344 goto nla_put_failure;
9345
9346 genlmsg_end(msg, hdr);
9347 return genlmsg_reply(msg, info);
9348
9349 nla_put_failure:
9350 err = -ENOBUFS;
9351 free_msg:
9352 nlmsg_free(msg);
9353 return err;
9354 }
9355
9356 static const struct nla_policy
9357 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9358 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9359 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9360 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9361 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9362 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9363 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9364 };
9365
9366 static int nl80211_set_cqm_txe(struct genl_info *info,
9367 u32 rate, u32 pkts, u32 intvl)
9368 {
9369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9370 struct net_device *dev = info->user_ptr[1];
9371 struct wireless_dev *wdev = dev->ieee80211_ptr;
9372
9373 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9374 return -EINVAL;
9375
9376 if (!rdev->ops->set_cqm_txe_config)
9377 return -EOPNOTSUPP;
9378
9379 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9380 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9381 return -EOPNOTSUPP;
9382
9383 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9384 }
9385
9386 static int nl80211_set_cqm_rssi(struct genl_info *info,
9387 s32 threshold, u32 hysteresis)
9388 {
9389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9390 struct net_device *dev = info->user_ptr[1];
9391 struct wireless_dev *wdev = dev->ieee80211_ptr;
9392
9393 if (threshold > 0)
9394 return -EINVAL;
9395
9396 /* disabling - hysteresis should also be zero then */
9397 if (threshold == 0)
9398 hysteresis = 0;
9399
9400 if (!rdev->ops->set_cqm_rssi_config)
9401 return -EOPNOTSUPP;
9402
9403 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9404 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9405 return -EOPNOTSUPP;
9406
9407 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9408 }
9409
9410 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9411 {
9412 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9413 struct nlattr *cqm;
9414 int err;
9415
9416 cqm = info->attrs[NL80211_ATTR_CQM];
9417 if (!cqm)
9418 return -EINVAL;
9419
9420 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9421 nl80211_attr_cqm_policy);
9422 if (err)
9423 return err;
9424
9425 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9426 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9427 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9428 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9429
9430 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9431 }
9432
9433 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9434 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9435 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9436 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9437 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9438 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9439
9440 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9441 }
9442
9443 return -EINVAL;
9444 }
9445
9446 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9447 {
9448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9449 struct net_device *dev = info->user_ptr[1];
9450 struct ocb_setup setup = {};
9451 int err;
9452
9453 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9454 if (err)
9455 return err;
9456
9457 return cfg80211_join_ocb(rdev, dev, &setup);
9458 }
9459
9460 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9461 {
9462 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9463 struct net_device *dev = info->user_ptr[1];
9464
9465 return cfg80211_leave_ocb(rdev, dev);
9466 }
9467
9468 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9469 {
9470 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9471 struct net_device *dev = info->user_ptr[1];
9472 struct mesh_config cfg;
9473 struct mesh_setup setup;
9474 int err;
9475
9476 /* start with default */
9477 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9478 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9479
9480 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9481 /* and parse parameters if given */
9482 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9483 if (err)
9484 return err;
9485 }
9486
9487 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9488 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9489 return -EINVAL;
9490
9491 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9492 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9493
9494 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9495 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9496 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9497 return -EINVAL;
9498
9499 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9500 setup.beacon_interval =
9501 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9502
9503 err = cfg80211_validate_beacon_int(rdev,
9504 NL80211_IFTYPE_MESH_POINT,
9505 setup.beacon_interval);
9506 if (err)
9507 return err;
9508 }
9509
9510 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9511 setup.dtim_period =
9512 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9513 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9514 return -EINVAL;
9515 }
9516
9517 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9518 /* parse additional setup parameters if given */
9519 err = nl80211_parse_mesh_setup(info, &setup);
9520 if (err)
9521 return err;
9522 }
9523
9524 if (setup.user_mpm)
9525 cfg.auto_open_plinks = false;
9526
9527 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9528 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9529 if (err)
9530 return err;
9531 } else {
9532 /* cfg80211_join_mesh() will sort it out */
9533 setup.chandef.chan = NULL;
9534 }
9535
9536 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9537 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9538 int n_rates =
9539 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9540 struct ieee80211_supported_band *sband;
9541
9542 if (!setup.chandef.chan)
9543 return -EINVAL;
9544
9545 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9546
9547 err = ieee80211_get_ratemask(sband, rates, n_rates,
9548 &setup.basic_rates);
9549 if (err)
9550 return err;
9551 }
9552
9553 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9554 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9555 if (err)
9556 return err;
9557
9558 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9559 &setup.beacon_rate);
9560 if (err)
9561 return err;
9562 }
9563
9564 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9565 }
9566
9567 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9568 {
9569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9570 struct net_device *dev = info->user_ptr[1];
9571
9572 return cfg80211_leave_mesh(rdev, dev);
9573 }
9574
9575 #ifdef CONFIG_PM
9576 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9577 struct cfg80211_registered_device *rdev)
9578 {
9579 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9580 struct nlattr *nl_pats, *nl_pat;
9581 int i, pat_len;
9582
9583 if (!wowlan->n_patterns)
9584 return 0;
9585
9586 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9587 if (!nl_pats)
9588 return -ENOBUFS;
9589
9590 for (i = 0; i < wowlan->n_patterns; i++) {
9591 nl_pat = nla_nest_start(msg, i + 1);
9592 if (!nl_pat)
9593 return -ENOBUFS;
9594 pat_len = wowlan->patterns[i].pattern_len;
9595 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9596 wowlan->patterns[i].mask) ||
9597 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9598 wowlan->patterns[i].pattern) ||
9599 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9600 wowlan->patterns[i].pkt_offset))
9601 return -ENOBUFS;
9602 nla_nest_end(msg, nl_pat);
9603 }
9604 nla_nest_end(msg, nl_pats);
9605
9606 return 0;
9607 }
9608
9609 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9610 struct cfg80211_wowlan_tcp *tcp)
9611 {
9612 struct nlattr *nl_tcp;
9613
9614 if (!tcp)
9615 return 0;
9616
9617 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9618 if (!nl_tcp)
9619 return -ENOBUFS;
9620
9621 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9622 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9623 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9624 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9625 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9626 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9627 tcp->payload_len, tcp->payload) ||
9628 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9629 tcp->data_interval) ||
9630 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9631 tcp->wake_len, tcp->wake_data) ||
9632 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9633 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9634 return -ENOBUFS;
9635
9636 if (tcp->payload_seq.len &&
9637 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9638 sizeof(tcp->payload_seq), &tcp->payload_seq))
9639 return -ENOBUFS;
9640
9641 if (tcp->payload_tok.len &&
9642 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9643 sizeof(tcp->payload_tok) + tcp->tokens_size,
9644 &tcp->payload_tok))
9645 return -ENOBUFS;
9646
9647 nla_nest_end(msg, nl_tcp);
9648
9649 return 0;
9650 }
9651
9652 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9653 struct cfg80211_sched_scan_request *req)
9654 {
9655 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9656 int i;
9657
9658 if (!req)
9659 return 0;
9660
9661 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9662 if (!nd)
9663 return -ENOBUFS;
9664
9665 if (req->n_scan_plans == 1 &&
9666 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9667 req->scan_plans[0].interval * 1000))
9668 return -ENOBUFS;
9669
9670 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9671 return -ENOBUFS;
9672
9673 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9674 if (!freqs)
9675 return -ENOBUFS;
9676
9677 for (i = 0; i < req->n_channels; i++) {
9678 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9679 return -ENOBUFS;
9680 }
9681
9682 nla_nest_end(msg, freqs);
9683
9684 if (req->n_match_sets) {
9685 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9686 if (!matches)
9687 return -ENOBUFS;
9688
9689 for (i = 0; i < req->n_match_sets; i++) {
9690 match = nla_nest_start(msg, i);
9691 if (!match)
9692 return -ENOBUFS;
9693
9694 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9695 req->match_sets[i].ssid.ssid_len,
9696 req->match_sets[i].ssid.ssid))
9697 return -ENOBUFS;
9698 nla_nest_end(msg, match);
9699 }
9700 nla_nest_end(msg, matches);
9701 }
9702
9703 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9704 if (!scan_plans)
9705 return -ENOBUFS;
9706
9707 for (i = 0; i < req->n_scan_plans; i++) {
9708 scan_plan = nla_nest_start(msg, i + 1);
9709 if (!scan_plan)
9710 return -ENOBUFS;
9711
9712 if (!scan_plan ||
9713 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9714 req->scan_plans[i].interval) ||
9715 (req->scan_plans[i].iterations &&
9716 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9717 req->scan_plans[i].iterations)))
9718 return -ENOBUFS;
9719 nla_nest_end(msg, scan_plan);
9720 }
9721 nla_nest_end(msg, scan_plans);
9722
9723 nla_nest_end(msg, nd);
9724
9725 return 0;
9726 }
9727
9728 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9729 {
9730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9731 struct sk_buff *msg;
9732 void *hdr;
9733 u32 size = NLMSG_DEFAULT_SIZE;
9734
9735 if (!rdev->wiphy.wowlan)
9736 return -EOPNOTSUPP;
9737
9738 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9739 /* adjust size to have room for all the data */
9740 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9741 rdev->wiphy.wowlan_config->tcp->payload_len +
9742 rdev->wiphy.wowlan_config->tcp->wake_len +
9743 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9744 }
9745
9746 msg = nlmsg_new(size, GFP_KERNEL);
9747 if (!msg)
9748 return -ENOMEM;
9749
9750 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9751 NL80211_CMD_GET_WOWLAN);
9752 if (!hdr)
9753 goto nla_put_failure;
9754
9755 if (rdev->wiphy.wowlan_config) {
9756 struct nlattr *nl_wowlan;
9757
9758 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9759 if (!nl_wowlan)
9760 goto nla_put_failure;
9761
9762 if ((rdev->wiphy.wowlan_config->any &&
9763 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9764 (rdev->wiphy.wowlan_config->disconnect &&
9765 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9766 (rdev->wiphy.wowlan_config->magic_pkt &&
9767 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9768 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9769 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9770 (rdev->wiphy.wowlan_config->eap_identity_req &&
9771 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9772 (rdev->wiphy.wowlan_config->four_way_handshake &&
9773 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9774 (rdev->wiphy.wowlan_config->rfkill_release &&
9775 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9776 goto nla_put_failure;
9777
9778 if (nl80211_send_wowlan_patterns(msg, rdev))
9779 goto nla_put_failure;
9780
9781 if (nl80211_send_wowlan_tcp(msg,
9782 rdev->wiphy.wowlan_config->tcp))
9783 goto nla_put_failure;
9784
9785 if (nl80211_send_wowlan_nd(
9786 msg,
9787 rdev->wiphy.wowlan_config->nd_config))
9788 goto nla_put_failure;
9789
9790 nla_nest_end(msg, nl_wowlan);
9791 }
9792
9793 genlmsg_end(msg, hdr);
9794 return genlmsg_reply(msg, info);
9795
9796 nla_put_failure:
9797 nlmsg_free(msg);
9798 return -ENOBUFS;
9799 }
9800
9801 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9802 struct nlattr *attr,
9803 struct cfg80211_wowlan *trig)
9804 {
9805 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9806 struct cfg80211_wowlan_tcp *cfg;
9807 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9808 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9809 u32 size;
9810 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9811 int err, port;
9812
9813 if (!rdev->wiphy.wowlan->tcp)
9814 return -EINVAL;
9815
9816 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9817 nl80211_wowlan_tcp_policy);
9818 if (err)
9819 return err;
9820
9821 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9822 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9823 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9824 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9825 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9826 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9827 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9828 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9829 return -EINVAL;
9830
9831 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9832 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9833 return -EINVAL;
9834
9835 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9836 rdev->wiphy.wowlan->tcp->data_interval_max ||
9837 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9838 return -EINVAL;
9839
9840 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9841 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9842 return -EINVAL;
9843
9844 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9845 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9846 return -EINVAL;
9847
9848 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9849 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9850
9851 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9852 tokens_size = tokln - sizeof(*tok);
9853
9854 if (!tok->len || tokens_size % tok->len)
9855 return -EINVAL;
9856 if (!rdev->wiphy.wowlan->tcp->tok)
9857 return -EINVAL;
9858 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9859 return -EINVAL;
9860 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9861 return -EINVAL;
9862 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9863 return -EINVAL;
9864 if (tok->offset + tok->len > data_size)
9865 return -EINVAL;
9866 }
9867
9868 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9869 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9870 if (!rdev->wiphy.wowlan->tcp->seq)
9871 return -EINVAL;
9872 if (seq->len == 0 || seq->len > 4)
9873 return -EINVAL;
9874 if (seq->len + seq->offset > data_size)
9875 return -EINVAL;
9876 }
9877
9878 size = sizeof(*cfg);
9879 size += data_size;
9880 size += wake_size + wake_mask_size;
9881 size += tokens_size;
9882
9883 cfg = kzalloc(size, GFP_KERNEL);
9884 if (!cfg)
9885 return -ENOMEM;
9886 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9887 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9888 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9889 ETH_ALEN);
9890 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9891 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9892 else
9893 port = 0;
9894 #ifdef CONFIG_INET
9895 /* allocate a socket and port for it and use it */
9896 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9897 IPPROTO_TCP, &cfg->sock, 1);
9898 if (err) {
9899 kfree(cfg);
9900 return err;
9901 }
9902 if (inet_csk_get_port(cfg->sock->sk, port)) {
9903 sock_release(cfg->sock);
9904 kfree(cfg);
9905 return -EADDRINUSE;
9906 }
9907 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9908 #else
9909 if (!port) {
9910 kfree(cfg);
9911 return -EINVAL;
9912 }
9913 cfg->src_port = port;
9914 #endif
9915
9916 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9917 cfg->payload_len = data_size;
9918 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9919 memcpy((void *)cfg->payload,
9920 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9921 data_size);
9922 if (seq)
9923 cfg->payload_seq = *seq;
9924 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9925 cfg->wake_len = wake_size;
9926 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9927 memcpy((void *)cfg->wake_data,
9928 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9929 wake_size);
9930 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9931 data_size + wake_size;
9932 memcpy((void *)cfg->wake_mask,
9933 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9934 wake_mask_size);
9935 if (tok) {
9936 cfg->tokens_size = tokens_size;
9937 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9938 }
9939
9940 trig->tcp = cfg;
9941
9942 return 0;
9943 }
9944
9945 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9946 const struct wiphy_wowlan_support *wowlan,
9947 struct nlattr *attr,
9948 struct cfg80211_wowlan *trig)
9949 {
9950 struct nlattr **tb;
9951 int err;
9952
9953 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9954 if (!tb)
9955 return -ENOMEM;
9956
9957 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9958 err = -EOPNOTSUPP;
9959 goto out;
9960 }
9961
9962 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9963 if (err)
9964 goto out;
9965
9966 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9967 err = PTR_ERR_OR_ZERO(trig->nd_config);
9968 if (err)
9969 trig->nd_config = NULL;
9970
9971 out:
9972 kfree(tb);
9973 return err;
9974 }
9975
9976 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9977 {
9978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9979 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9980 struct cfg80211_wowlan new_triggers = {};
9981 struct cfg80211_wowlan *ntrig;
9982 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9983 int err, i;
9984 bool prev_enabled = rdev->wiphy.wowlan_config;
9985 bool regular = false;
9986
9987 if (!wowlan)
9988 return -EOPNOTSUPP;
9989
9990 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9991 cfg80211_rdev_free_wowlan(rdev);
9992 rdev->wiphy.wowlan_config = NULL;
9993 goto set_wakeup;
9994 }
9995
9996 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
9997 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
9998 nl80211_wowlan_policy);
9999 if (err)
10000 return err;
10001
10002 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10003 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10004 return -EINVAL;
10005 new_triggers.any = true;
10006 }
10007
10008 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10009 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10010 return -EINVAL;
10011 new_triggers.disconnect = true;
10012 regular = true;
10013 }
10014
10015 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10016 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10017 return -EINVAL;
10018 new_triggers.magic_pkt = true;
10019 regular = true;
10020 }
10021
10022 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10023 return -EINVAL;
10024
10025 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10026 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10027 return -EINVAL;
10028 new_triggers.gtk_rekey_failure = true;
10029 regular = true;
10030 }
10031
10032 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10033 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10034 return -EINVAL;
10035 new_triggers.eap_identity_req = true;
10036 regular = true;
10037 }
10038
10039 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10040 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10041 return -EINVAL;
10042 new_triggers.four_way_handshake = true;
10043 regular = true;
10044 }
10045
10046 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10047 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10048 return -EINVAL;
10049 new_triggers.rfkill_release = true;
10050 regular = true;
10051 }
10052
10053 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10054 struct nlattr *pat;
10055 int n_patterns = 0;
10056 int rem, pat_len, mask_len, pkt_offset;
10057 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10058
10059 regular = true;
10060
10061 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10062 rem)
10063 n_patterns++;
10064 if (n_patterns > wowlan->n_patterns)
10065 return -EINVAL;
10066
10067 new_triggers.patterns = kcalloc(n_patterns,
10068 sizeof(new_triggers.patterns[0]),
10069 GFP_KERNEL);
10070 if (!new_triggers.patterns)
10071 return -ENOMEM;
10072
10073 new_triggers.n_patterns = n_patterns;
10074 i = 0;
10075
10076 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10077 rem) {
10078 u8 *mask_pat;
10079
10080 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10081 NULL);
10082 err = -EINVAL;
10083 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10084 !pat_tb[NL80211_PKTPAT_PATTERN])
10085 goto error;
10086 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10087 mask_len = DIV_ROUND_UP(pat_len, 8);
10088 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10089 goto error;
10090 if (pat_len > wowlan->pattern_max_len ||
10091 pat_len < wowlan->pattern_min_len)
10092 goto error;
10093
10094 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10095 pkt_offset = 0;
10096 else
10097 pkt_offset = nla_get_u32(
10098 pat_tb[NL80211_PKTPAT_OFFSET]);
10099 if (pkt_offset > wowlan->max_pkt_offset)
10100 goto error;
10101 new_triggers.patterns[i].pkt_offset = pkt_offset;
10102
10103 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10104 if (!mask_pat) {
10105 err = -ENOMEM;
10106 goto error;
10107 }
10108 new_triggers.patterns[i].mask = mask_pat;
10109 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10110 mask_len);
10111 mask_pat += mask_len;
10112 new_triggers.patterns[i].pattern = mask_pat;
10113 new_triggers.patterns[i].pattern_len = pat_len;
10114 memcpy(mask_pat,
10115 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10116 pat_len);
10117 i++;
10118 }
10119 }
10120
10121 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10122 regular = true;
10123 err = nl80211_parse_wowlan_tcp(
10124 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10125 &new_triggers);
10126 if (err)
10127 goto error;
10128 }
10129
10130 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10131 regular = true;
10132 err = nl80211_parse_wowlan_nd(
10133 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10134 &new_triggers);
10135 if (err)
10136 goto error;
10137 }
10138
10139 /* The 'any' trigger means the device continues operating more or less
10140 * as in its normal operation mode and wakes up the host on most of the
10141 * normal interrupts (like packet RX, ...)
10142 * It therefore makes little sense to combine with the more constrained
10143 * wakeup trigger modes.
10144 */
10145 if (new_triggers.any && regular) {
10146 err = -EINVAL;
10147 goto error;
10148 }
10149
10150 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10151 if (!ntrig) {
10152 err = -ENOMEM;
10153 goto error;
10154 }
10155 cfg80211_rdev_free_wowlan(rdev);
10156 rdev->wiphy.wowlan_config = ntrig;
10157
10158 set_wakeup:
10159 if (rdev->ops->set_wakeup &&
10160 prev_enabled != !!rdev->wiphy.wowlan_config)
10161 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10162
10163 return 0;
10164 error:
10165 for (i = 0; i < new_triggers.n_patterns; i++)
10166 kfree(new_triggers.patterns[i].mask);
10167 kfree(new_triggers.patterns);
10168 if (new_triggers.tcp && new_triggers.tcp->sock)
10169 sock_release(new_triggers.tcp->sock);
10170 kfree(new_triggers.tcp);
10171 kfree(new_triggers.nd_config);
10172 return err;
10173 }
10174 #endif
10175
10176 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10177 struct cfg80211_registered_device *rdev)
10178 {
10179 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10180 int i, j, pat_len;
10181 struct cfg80211_coalesce_rules *rule;
10182
10183 if (!rdev->coalesce->n_rules)
10184 return 0;
10185
10186 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10187 if (!nl_rules)
10188 return -ENOBUFS;
10189
10190 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10191 nl_rule = nla_nest_start(msg, i + 1);
10192 if (!nl_rule)
10193 return -ENOBUFS;
10194
10195 rule = &rdev->coalesce->rules[i];
10196 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10197 rule->delay))
10198 return -ENOBUFS;
10199
10200 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10201 rule->condition))
10202 return -ENOBUFS;
10203
10204 nl_pats = nla_nest_start(msg,
10205 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10206 if (!nl_pats)
10207 return -ENOBUFS;
10208
10209 for (j = 0; j < rule->n_patterns; j++) {
10210 nl_pat = nla_nest_start(msg, j + 1);
10211 if (!nl_pat)
10212 return -ENOBUFS;
10213 pat_len = rule->patterns[j].pattern_len;
10214 if (nla_put(msg, NL80211_PKTPAT_MASK,
10215 DIV_ROUND_UP(pat_len, 8),
10216 rule->patterns[j].mask) ||
10217 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10218 rule->patterns[j].pattern) ||
10219 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10220 rule->patterns[j].pkt_offset))
10221 return -ENOBUFS;
10222 nla_nest_end(msg, nl_pat);
10223 }
10224 nla_nest_end(msg, nl_pats);
10225 nla_nest_end(msg, nl_rule);
10226 }
10227 nla_nest_end(msg, nl_rules);
10228
10229 return 0;
10230 }
10231
10232 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10233 {
10234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10235 struct sk_buff *msg;
10236 void *hdr;
10237
10238 if (!rdev->wiphy.coalesce)
10239 return -EOPNOTSUPP;
10240
10241 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10242 if (!msg)
10243 return -ENOMEM;
10244
10245 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10246 NL80211_CMD_GET_COALESCE);
10247 if (!hdr)
10248 goto nla_put_failure;
10249
10250 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10251 goto nla_put_failure;
10252
10253 genlmsg_end(msg, hdr);
10254 return genlmsg_reply(msg, info);
10255
10256 nla_put_failure:
10257 nlmsg_free(msg);
10258 return -ENOBUFS;
10259 }
10260
10261 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10262 {
10263 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10264 int i, j;
10265 struct cfg80211_coalesce_rules *rule;
10266
10267 if (!coalesce)
10268 return;
10269
10270 for (i = 0; i < coalesce->n_rules; i++) {
10271 rule = &coalesce->rules[i];
10272 for (j = 0; j < rule->n_patterns; j++)
10273 kfree(rule->patterns[j].mask);
10274 kfree(rule->patterns);
10275 }
10276 kfree(coalesce->rules);
10277 kfree(coalesce);
10278 rdev->coalesce = NULL;
10279 }
10280
10281 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10282 struct nlattr *rule,
10283 struct cfg80211_coalesce_rules *new_rule)
10284 {
10285 int err, i;
10286 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10287 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10288 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10289 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10290
10291 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10292 nl80211_coalesce_policy);
10293 if (err)
10294 return err;
10295
10296 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10297 new_rule->delay =
10298 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10299 if (new_rule->delay > coalesce->max_delay)
10300 return -EINVAL;
10301
10302 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10303 new_rule->condition =
10304 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10305 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10306 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10307 return -EINVAL;
10308
10309 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10310 return -EINVAL;
10311
10312 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10313 rem)
10314 n_patterns++;
10315 if (n_patterns > coalesce->n_patterns)
10316 return -EINVAL;
10317
10318 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10319 GFP_KERNEL);
10320 if (!new_rule->patterns)
10321 return -ENOMEM;
10322
10323 new_rule->n_patterns = n_patterns;
10324 i = 0;
10325
10326 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10327 rem) {
10328 u8 *mask_pat;
10329
10330 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10331 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10332 !pat_tb[NL80211_PKTPAT_PATTERN])
10333 return -EINVAL;
10334 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10335 mask_len = DIV_ROUND_UP(pat_len, 8);
10336 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10337 return -EINVAL;
10338 if (pat_len > coalesce->pattern_max_len ||
10339 pat_len < coalesce->pattern_min_len)
10340 return -EINVAL;
10341
10342 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10343 pkt_offset = 0;
10344 else
10345 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10346 if (pkt_offset > coalesce->max_pkt_offset)
10347 return -EINVAL;
10348 new_rule->patterns[i].pkt_offset = pkt_offset;
10349
10350 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10351 if (!mask_pat)
10352 return -ENOMEM;
10353
10354 new_rule->patterns[i].mask = mask_pat;
10355 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10356 mask_len);
10357
10358 mask_pat += mask_len;
10359 new_rule->patterns[i].pattern = mask_pat;
10360 new_rule->patterns[i].pattern_len = pat_len;
10361 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10362 pat_len);
10363 i++;
10364 }
10365
10366 return 0;
10367 }
10368
10369 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10370 {
10371 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10372 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10373 struct cfg80211_coalesce new_coalesce = {};
10374 struct cfg80211_coalesce *n_coalesce;
10375 int err, rem_rule, n_rules = 0, i, j;
10376 struct nlattr *rule;
10377 struct cfg80211_coalesce_rules *tmp_rule;
10378
10379 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10380 return -EOPNOTSUPP;
10381
10382 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10383 cfg80211_rdev_free_coalesce(rdev);
10384 rdev_set_coalesce(rdev, NULL);
10385 return 0;
10386 }
10387
10388 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10389 rem_rule)
10390 n_rules++;
10391 if (n_rules > coalesce->n_rules)
10392 return -EINVAL;
10393
10394 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10395 GFP_KERNEL);
10396 if (!new_coalesce.rules)
10397 return -ENOMEM;
10398
10399 new_coalesce.n_rules = n_rules;
10400 i = 0;
10401
10402 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10403 rem_rule) {
10404 err = nl80211_parse_coalesce_rule(rdev, rule,
10405 &new_coalesce.rules[i]);
10406 if (err)
10407 goto error;
10408
10409 i++;
10410 }
10411
10412 err = rdev_set_coalesce(rdev, &new_coalesce);
10413 if (err)
10414 goto error;
10415
10416 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10417 if (!n_coalesce) {
10418 err = -ENOMEM;
10419 goto error;
10420 }
10421 cfg80211_rdev_free_coalesce(rdev);
10422 rdev->coalesce = n_coalesce;
10423
10424 return 0;
10425 error:
10426 for (i = 0; i < new_coalesce.n_rules; i++) {
10427 tmp_rule = &new_coalesce.rules[i];
10428 for (j = 0; j < tmp_rule->n_patterns; j++)
10429 kfree(tmp_rule->patterns[j].mask);
10430 kfree(tmp_rule->patterns);
10431 }
10432 kfree(new_coalesce.rules);
10433
10434 return err;
10435 }
10436
10437 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10438 {
10439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10440 struct net_device *dev = info->user_ptr[1];
10441 struct wireless_dev *wdev = dev->ieee80211_ptr;
10442 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10443 struct cfg80211_gtk_rekey_data rekey_data;
10444 int err;
10445
10446 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10447 return -EINVAL;
10448
10449 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10450 info->attrs[NL80211_ATTR_REKEY_DATA],
10451 nl80211_rekey_policy);
10452 if (err)
10453 return err;
10454
10455 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10456 return -ERANGE;
10457 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10458 return -ERANGE;
10459 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10460 return -ERANGE;
10461
10462 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10463 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10464 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10465
10466 wdev_lock(wdev);
10467 if (!wdev->current_bss) {
10468 err = -ENOTCONN;
10469 goto out;
10470 }
10471
10472 if (!rdev->ops->set_rekey_data) {
10473 err = -EOPNOTSUPP;
10474 goto out;
10475 }
10476
10477 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10478 out:
10479 wdev_unlock(wdev);
10480 return err;
10481 }
10482
10483 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10484 struct genl_info *info)
10485 {
10486 struct net_device *dev = info->user_ptr[1];
10487 struct wireless_dev *wdev = dev->ieee80211_ptr;
10488
10489 if (wdev->iftype != NL80211_IFTYPE_AP &&
10490 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10491 return -EINVAL;
10492
10493 if (wdev->ap_unexpected_nlportid)
10494 return -EBUSY;
10495
10496 wdev->ap_unexpected_nlportid = info->snd_portid;
10497 return 0;
10498 }
10499
10500 static int nl80211_probe_client(struct sk_buff *skb,
10501 struct genl_info *info)
10502 {
10503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10504 struct net_device *dev = info->user_ptr[1];
10505 struct wireless_dev *wdev = dev->ieee80211_ptr;
10506 struct sk_buff *msg;
10507 void *hdr;
10508 const u8 *addr;
10509 u64 cookie;
10510 int err;
10511
10512 if (wdev->iftype != NL80211_IFTYPE_AP &&
10513 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10514 return -EOPNOTSUPP;
10515
10516 if (!info->attrs[NL80211_ATTR_MAC])
10517 return -EINVAL;
10518
10519 if (!rdev->ops->probe_client)
10520 return -EOPNOTSUPP;
10521
10522 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10523 if (!msg)
10524 return -ENOMEM;
10525
10526 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10527 NL80211_CMD_PROBE_CLIENT);
10528 if (!hdr) {
10529 err = -ENOBUFS;
10530 goto free_msg;
10531 }
10532
10533 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10534
10535 err = rdev_probe_client(rdev, dev, addr, &cookie);
10536 if (err)
10537 goto free_msg;
10538
10539 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10540 NL80211_ATTR_PAD))
10541 goto nla_put_failure;
10542
10543 genlmsg_end(msg, hdr);
10544
10545 return genlmsg_reply(msg, info);
10546
10547 nla_put_failure:
10548 err = -ENOBUFS;
10549 free_msg:
10550 nlmsg_free(msg);
10551 return err;
10552 }
10553
10554 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10555 {
10556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10557 struct cfg80211_beacon_registration *reg, *nreg;
10558 int rv;
10559
10560 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10561 return -EOPNOTSUPP;
10562
10563 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10564 if (!nreg)
10565 return -ENOMEM;
10566
10567 /* First, check if already registered. */
10568 spin_lock_bh(&rdev->beacon_registrations_lock);
10569 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10570 if (reg->nlportid == info->snd_portid) {
10571 rv = -EALREADY;
10572 goto out_err;
10573 }
10574 }
10575 /* Add it to the list */
10576 nreg->nlportid = info->snd_portid;
10577 list_add(&nreg->list, &rdev->beacon_registrations);
10578
10579 spin_unlock_bh(&rdev->beacon_registrations_lock);
10580
10581 return 0;
10582 out_err:
10583 spin_unlock_bh(&rdev->beacon_registrations_lock);
10584 kfree(nreg);
10585 return rv;
10586 }
10587
10588 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10589 {
10590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10591 struct wireless_dev *wdev = info->user_ptr[1];
10592 int err;
10593
10594 if (!rdev->ops->start_p2p_device)
10595 return -EOPNOTSUPP;
10596
10597 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10598 return -EOPNOTSUPP;
10599
10600 if (wdev_running(wdev))
10601 return 0;
10602
10603 if (rfkill_blocked(rdev->rfkill))
10604 return -ERFKILL;
10605
10606 err = rdev_start_p2p_device(rdev, wdev);
10607 if (err)
10608 return err;
10609
10610 wdev->is_running = true;
10611 rdev->opencount++;
10612
10613 return 0;
10614 }
10615
10616 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10617 {
10618 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10619 struct wireless_dev *wdev = info->user_ptr[1];
10620
10621 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10622 return -EOPNOTSUPP;
10623
10624 if (!rdev->ops->stop_p2p_device)
10625 return -EOPNOTSUPP;
10626
10627 cfg80211_stop_p2p_device(rdev, wdev);
10628
10629 return 0;
10630 }
10631
10632 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10633 {
10634 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10635 struct wireless_dev *wdev = info->user_ptr[1];
10636 struct cfg80211_nan_conf conf = {};
10637 int err;
10638
10639 if (wdev->iftype != NL80211_IFTYPE_NAN)
10640 return -EOPNOTSUPP;
10641
10642 if (wdev_running(wdev))
10643 return -EEXIST;
10644
10645 if (rfkill_blocked(rdev->rfkill))
10646 return -ERFKILL;
10647
10648 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10649 return -EINVAL;
10650
10651 if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10652 return -EINVAL;
10653
10654 conf.master_pref =
10655 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10656 if (!conf.master_pref)
10657 return -EINVAL;
10658
10659 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10660
10661 err = rdev_start_nan(rdev, wdev, &conf);
10662 if (err)
10663 return err;
10664
10665 wdev->is_running = true;
10666 rdev->opencount++;
10667
10668 return 0;
10669 }
10670
10671 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10672 {
10673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10674 struct wireless_dev *wdev = info->user_ptr[1];
10675
10676 if (wdev->iftype != NL80211_IFTYPE_NAN)
10677 return -EOPNOTSUPP;
10678
10679 cfg80211_stop_nan(rdev, wdev);
10680
10681 return 0;
10682 }
10683
10684 static int validate_nan_filter(struct nlattr *filter_attr)
10685 {
10686 struct nlattr *attr;
10687 int len = 0, n_entries = 0, rem;
10688
10689 nla_for_each_nested(attr, filter_attr, rem) {
10690 len += nla_len(attr);
10691 n_entries++;
10692 }
10693
10694 if (len >= U8_MAX)
10695 return -EINVAL;
10696
10697 return n_entries;
10698 }
10699
10700 static int handle_nan_filter(struct nlattr *attr_filter,
10701 struct cfg80211_nan_func *func,
10702 bool tx)
10703 {
10704 struct nlattr *attr;
10705 int n_entries, rem, i;
10706 struct cfg80211_nan_func_filter *filter;
10707
10708 n_entries = validate_nan_filter(attr_filter);
10709 if (n_entries < 0)
10710 return n_entries;
10711
10712 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10713
10714 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10715 if (!filter)
10716 return -ENOMEM;
10717
10718 i = 0;
10719 nla_for_each_nested(attr, attr_filter, rem) {
10720 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10721 filter[i].len = nla_len(attr);
10722 i++;
10723 }
10724 if (tx) {
10725 func->num_tx_filters = n_entries;
10726 func->tx_filters = filter;
10727 } else {
10728 func->num_rx_filters = n_entries;
10729 func->rx_filters = filter;
10730 }
10731
10732 return 0;
10733 }
10734
10735 static int nl80211_nan_add_func(struct sk_buff *skb,
10736 struct genl_info *info)
10737 {
10738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10739 struct wireless_dev *wdev = info->user_ptr[1];
10740 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10741 struct cfg80211_nan_func *func;
10742 struct sk_buff *msg = NULL;
10743 void *hdr = NULL;
10744 int err = 0;
10745
10746 if (wdev->iftype != NL80211_IFTYPE_NAN)
10747 return -EOPNOTSUPP;
10748
10749 if (!wdev_running(wdev))
10750 return -ENOTCONN;
10751
10752 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10753 return -EINVAL;
10754
10755 if (wdev->owner_nlportid &&
10756 wdev->owner_nlportid != info->snd_portid)
10757 return -ENOTCONN;
10758
10759 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10760 info->attrs[NL80211_ATTR_NAN_FUNC],
10761 nl80211_nan_func_policy);
10762 if (err)
10763 return err;
10764
10765 func = kzalloc(sizeof(*func), GFP_KERNEL);
10766 if (!func)
10767 return -ENOMEM;
10768
10769 func->cookie = wdev->wiphy->cookie_counter++;
10770
10771 if (!tb[NL80211_NAN_FUNC_TYPE] ||
10772 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10773 err = -EINVAL;
10774 goto out;
10775 }
10776
10777
10778 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10779
10780 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10781 err = -EINVAL;
10782 goto out;
10783 }
10784
10785 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10786 sizeof(func->service_id));
10787
10788 func->close_range =
10789 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10790
10791 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10792 func->serv_spec_info_len =
10793 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10794 func->serv_spec_info =
10795 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10796 func->serv_spec_info_len,
10797 GFP_KERNEL);
10798 if (!func->serv_spec_info) {
10799 err = -ENOMEM;
10800 goto out;
10801 }
10802 }
10803
10804 if (tb[NL80211_NAN_FUNC_TTL])
10805 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10806
10807 switch (func->type) {
10808 case NL80211_NAN_FUNC_PUBLISH:
10809 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10810 err = -EINVAL;
10811 goto out;
10812 }
10813
10814 func->publish_type =
10815 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10816 func->publish_bcast =
10817 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10818
10819 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10820 func->publish_bcast) {
10821 err = -EINVAL;
10822 goto out;
10823 }
10824 break;
10825 case NL80211_NAN_FUNC_SUBSCRIBE:
10826 func->subscribe_active =
10827 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10828 break;
10829 case NL80211_NAN_FUNC_FOLLOW_UP:
10830 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10831 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10832 err = -EINVAL;
10833 goto out;
10834 }
10835
10836 func->followup_id =
10837 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10838 func->followup_reqid =
10839 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10840 memcpy(func->followup_dest.addr,
10841 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10842 sizeof(func->followup_dest.addr));
10843 if (func->ttl) {
10844 err = -EINVAL;
10845 goto out;
10846 }
10847 break;
10848 default:
10849 err = -EINVAL;
10850 goto out;
10851 }
10852
10853 if (tb[NL80211_NAN_FUNC_SRF]) {
10854 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10855
10856 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10857 tb[NL80211_NAN_FUNC_SRF],
10858 nl80211_nan_srf_policy);
10859 if (err)
10860 goto out;
10861
10862 func->srf_include =
10863 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10864
10865 if (srf_tb[NL80211_NAN_SRF_BF]) {
10866 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10867 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10868 err = -EINVAL;
10869 goto out;
10870 }
10871
10872 func->srf_bf_len =
10873 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10874 func->srf_bf =
10875 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10876 func->srf_bf_len, GFP_KERNEL);
10877 if (!func->srf_bf) {
10878 err = -ENOMEM;
10879 goto out;
10880 }
10881
10882 func->srf_bf_idx =
10883 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10884 } else {
10885 struct nlattr *attr, *mac_attr =
10886 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10887 int n_entries, rem, i = 0;
10888
10889 if (!mac_attr) {
10890 err = -EINVAL;
10891 goto out;
10892 }
10893
10894 n_entries = validate_acl_mac_addrs(mac_attr);
10895 if (n_entries <= 0) {
10896 err = -EINVAL;
10897 goto out;
10898 }
10899
10900 func->srf_num_macs = n_entries;
10901 func->srf_macs =
10902 kzalloc(sizeof(*func->srf_macs) * n_entries,
10903 GFP_KERNEL);
10904 if (!func->srf_macs) {
10905 err = -ENOMEM;
10906 goto out;
10907 }
10908
10909 nla_for_each_nested(attr, mac_attr, rem)
10910 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10911 sizeof(*func->srf_macs));
10912 }
10913 }
10914
10915 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10916 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10917 func, true);
10918 if (err)
10919 goto out;
10920 }
10921
10922 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10923 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10924 func, false);
10925 if (err)
10926 goto out;
10927 }
10928
10929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10930 if (!msg) {
10931 err = -ENOMEM;
10932 goto out;
10933 }
10934
10935 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10936 NL80211_CMD_ADD_NAN_FUNCTION);
10937 /* This can't really happen - we just allocated 4KB */
10938 if (WARN_ON(!hdr)) {
10939 err = -ENOMEM;
10940 goto out;
10941 }
10942
10943 err = rdev_add_nan_func(rdev, wdev, func);
10944 out:
10945 if (err < 0) {
10946 cfg80211_free_nan_func(func);
10947 nlmsg_free(msg);
10948 return err;
10949 }
10950
10951 /* propagate the instance id and cookie to userspace */
10952 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10953 NL80211_ATTR_PAD))
10954 goto nla_put_failure;
10955
10956 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10957 if (!func_attr)
10958 goto nla_put_failure;
10959
10960 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10961 func->instance_id))
10962 goto nla_put_failure;
10963
10964 nla_nest_end(msg, func_attr);
10965
10966 genlmsg_end(msg, hdr);
10967 return genlmsg_reply(msg, info);
10968
10969 nla_put_failure:
10970 nlmsg_free(msg);
10971 return -ENOBUFS;
10972 }
10973
10974 static int nl80211_nan_del_func(struct sk_buff *skb,
10975 struct genl_info *info)
10976 {
10977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10978 struct wireless_dev *wdev = info->user_ptr[1];
10979 u64 cookie;
10980
10981 if (wdev->iftype != NL80211_IFTYPE_NAN)
10982 return -EOPNOTSUPP;
10983
10984 if (!wdev_running(wdev))
10985 return -ENOTCONN;
10986
10987 if (!info->attrs[NL80211_ATTR_COOKIE])
10988 return -EINVAL;
10989
10990 if (wdev->owner_nlportid &&
10991 wdev->owner_nlportid != info->snd_portid)
10992 return -ENOTCONN;
10993
10994 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10995
10996 rdev_del_nan_func(rdev, wdev, cookie);
10997
10998 return 0;
10999 }
11000
11001 static int nl80211_nan_change_config(struct sk_buff *skb,
11002 struct genl_info *info)
11003 {
11004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11005 struct wireless_dev *wdev = info->user_ptr[1];
11006 struct cfg80211_nan_conf conf = {};
11007 u32 changed = 0;
11008
11009 if (wdev->iftype != NL80211_IFTYPE_NAN)
11010 return -EOPNOTSUPP;
11011
11012 if (!wdev_running(wdev))
11013 return -ENOTCONN;
11014
11015 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11016 conf.master_pref =
11017 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11018 if (conf.master_pref <= 1 || conf.master_pref == 255)
11019 return -EINVAL;
11020
11021 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11022 }
11023
11024 if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11025 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11026 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11027 }
11028
11029 if (!changed)
11030 return -EINVAL;
11031
11032 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11033 }
11034
11035 void cfg80211_nan_match(struct wireless_dev *wdev,
11036 struct cfg80211_nan_match_params *match, gfp_t gfp)
11037 {
11038 struct wiphy *wiphy = wdev->wiphy;
11039 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11040 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11041 struct sk_buff *msg;
11042 void *hdr;
11043
11044 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11045 return;
11046
11047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11048 if (!msg)
11049 return;
11050
11051 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11052 if (!hdr) {
11053 nlmsg_free(msg);
11054 return;
11055 }
11056
11057 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11058 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11059 wdev->netdev->ifindex)) ||
11060 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11061 NL80211_ATTR_PAD))
11062 goto nla_put_failure;
11063
11064 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11065 NL80211_ATTR_PAD) ||
11066 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11067 goto nla_put_failure;
11068
11069 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11070 if (!match_attr)
11071 goto nla_put_failure;
11072
11073 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11074 if (!local_func_attr)
11075 goto nla_put_failure;
11076
11077 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11078 goto nla_put_failure;
11079
11080 nla_nest_end(msg, local_func_attr);
11081
11082 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11083 if (!peer_func_attr)
11084 goto nla_put_failure;
11085
11086 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11087 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11088 goto nla_put_failure;
11089
11090 if (match->info && match->info_len &&
11091 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11092 match->info))
11093 goto nla_put_failure;
11094
11095 nla_nest_end(msg, peer_func_attr);
11096 nla_nest_end(msg, match_attr);
11097 genlmsg_end(msg, hdr);
11098
11099 if (!wdev->owner_nlportid)
11100 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11101 msg, 0, NL80211_MCGRP_NAN, gfp);
11102 else
11103 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11104 wdev->owner_nlportid);
11105
11106 return;
11107
11108 nla_put_failure:
11109 nlmsg_free(msg);
11110 }
11111 EXPORT_SYMBOL(cfg80211_nan_match);
11112
11113 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11114 u8 inst_id,
11115 enum nl80211_nan_func_term_reason reason,
11116 u64 cookie, gfp_t gfp)
11117 {
11118 struct wiphy *wiphy = wdev->wiphy;
11119 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11120 struct sk_buff *msg;
11121 struct nlattr *func_attr;
11122 void *hdr;
11123
11124 if (WARN_ON(!inst_id))
11125 return;
11126
11127 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11128 if (!msg)
11129 return;
11130
11131 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11132 if (!hdr) {
11133 nlmsg_free(msg);
11134 return;
11135 }
11136
11137 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11138 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11139 wdev->netdev->ifindex)) ||
11140 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11141 NL80211_ATTR_PAD))
11142 goto nla_put_failure;
11143
11144 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11145 NL80211_ATTR_PAD))
11146 goto nla_put_failure;
11147
11148 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11149 if (!func_attr)
11150 goto nla_put_failure;
11151
11152 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11153 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11154 goto nla_put_failure;
11155
11156 nla_nest_end(msg, func_attr);
11157 genlmsg_end(msg, hdr);
11158
11159 if (!wdev->owner_nlportid)
11160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11161 msg, 0, NL80211_MCGRP_NAN, gfp);
11162 else
11163 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11164 wdev->owner_nlportid);
11165
11166 return;
11167
11168 nla_put_failure:
11169 nlmsg_free(msg);
11170 }
11171 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11172
11173 static int nl80211_get_protocol_features(struct sk_buff *skb,
11174 struct genl_info *info)
11175 {
11176 void *hdr;
11177 struct sk_buff *msg;
11178
11179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11180 if (!msg)
11181 return -ENOMEM;
11182
11183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11184 NL80211_CMD_GET_PROTOCOL_FEATURES);
11185 if (!hdr)
11186 goto nla_put_failure;
11187
11188 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11189 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11190 goto nla_put_failure;
11191
11192 genlmsg_end(msg, hdr);
11193 return genlmsg_reply(msg, info);
11194
11195 nla_put_failure:
11196 kfree_skb(msg);
11197 return -ENOBUFS;
11198 }
11199
11200 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11201 {
11202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11203 struct cfg80211_update_ft_ies_params ft_params;
11204 struct net_device *dev = info->user_ptr[1];
11205
11206 if (!rdev->ops->update_ft_ies)
11207 return -EOPNOTSUPP;
11208
11209 if (!info->attrs[NL80211_ATTR_MDID] ||
11210 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11211 return -EINVAL;
11212
11213 memset(&ft_params, 0, sizeof(ft_params));
11214 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11215 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11216 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11217
11218 return rdev_update_ft_ies(rdev, dev, &ft_params);
11219 }
11220
11221 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11222 struct genl_info *info)
11223 {
11224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11225 struct wireless_dev *wdev = info->user_ptr[1];
11226 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11227 u16 duration;
11228 int ret;
11229
11230 if (!rdev->ops->crit_proto_start)
11231 return -EOPNOTSUPP;
11232
11233 if (WARN_ON(!rdev->ops->crit_proto_stop))
11234 return -EINVAL;
11235
11236 if (rdev->crit_proto_nlportid)
11237 return -EBUSY;
11238
11239 /* determine protocol if provided */
11240 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11241 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11242
11243 if (proto >= NUM_NL80211_CRIT_PROTO)
11244 return -EINVAL;
11245
11246 /* timeout must be provided */
11247 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11248 return -EINVAL;
11249
11250 duration =
11251 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11252
11253 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11254 return -ERANGE;
11255
11256 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11257 if (!ret)
11258 rdev->crit_proto_nlportid = info->snd_portid;
11259
11260 return ret;
11261 }
11262
11263 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11264 struct genl_info *info)
11265 {
11266 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11267 struct wireless_dev *wdev = info->user_ptr[1];
11268
11269 if (!rdev->ops->crit_proto_stop)
11270 return -EOPNOTSUPP;
11271
11272 if (rdev->crit_proto_nlportid) {
11273 rdev->crit_proto_nlportid = 0;
11274 rdev_crit_proto_stop(rdev, wdev);
11275 }
11276 return 0;
11277 }
11278
11279 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11280 {
11281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11282 struct wireless_dev *wdev =
11283 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11284 int i, err;
11285 u32 vid, subcmd;
11286
11287 if (!rdev->wiphy.vendor_commands)
11288 return -EOPNOTSUPP;
11289
11290 if (IS_ERR(wdev)) {
11291 err = PTR_ERR(wdev);
11292 if (err != -EINVAL)
11293 return err;
11294 wdev = NULL;
11295 } else if (wdev->wiphy != &rdev->wiphy) {
11296 return -EINVAL;
11297 }
11298
11299 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11300 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11301 return -EINVAL;
11302
11303 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11304 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11305 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11306 const struct wiphy_vendor_command *vcmd;
11307 void *data = NULL;
11308 int len = 0;
11309
11310 vcmd = &rdev->wiphy.vendor_commands[i];
11311
11312 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11313 continue;
11314
11315 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11316 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11317 if (!wdev)
11318 return -EINVAL;
11319 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11320 !wdev->netdev)
11321 return -EINVAL;
11322
11323 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11324 if (!wdev_running(wdev))
11325 return -ENETDOWN;
11326 }
11327
11328 if (!vcmd->doit)
11329 return -EOPNOTSUPP;
11330 } else {
11331 wdev = NULL;
11332 }
11333
11334 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11335 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11336 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11337 }
11338
11339 rdev->cur_cmd_info = info;
11340 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11341 data, len);
11342 rdev->cur_cmd_info = NULL;
11343 return err;
11344 }
11345
11346 return -EOPNOTSUPP;
11347 }
11348
11349 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11350 struct netlink_callback *cb,
11351 struct cfg80211_registered_device **rdev,
11352 struct wireless_dev **wdev)
11353 {
11354 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11355 u32 vid, subcmd;
11356 unsigned int i;
11357 int vcmd_idx = -1;
11358 int err;
11359 void *data = NULL;
11360 unsigned int data_len = 0;
11361
11362 rtnl_lock();
11363
11364 if (cb->args[0]) {
11365 /* subtract the 1 again here */
11366 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11367 struct wireless_dev *tmp;
11368
11369 if (!wiphy) {
11370 err = -ENODEV;
11371 goto out_unlock;
11372 }
11373 *rdev = wiphy_to_rdev(wiphy);
11374 *wdev = NULL;
11375
11376 if (cb->args[1]) {
11377 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11378 if (tmp->identifier == cb->args[1] - 1) {
11379 *wdev = tmp;
11380 break;
11381 }
11382 }
11383 }
11384
11385 /* keep rtnl locked in successful case */
11386 return 0;
11387 }
11388
11389 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11390 attrbuf, nl80211_fam.maxattr, nl80211_policy);
11391 if (err)
11392 goto out_unlock;
11393
11394 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11395 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11396 err = -EINVAL;
11397 goto out_unlock;
11398 }
11399
11400 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11401 if (IS_ERR(*wdev))
11402 *wdev = NULL;
11403
11404 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11405 if (IS_ERR(*rdev)) {
11406 err = PTR_ERR(*rdev);
11407 goto out_unlock;
11408 }
11409
11410 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11411 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11412
11413 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11414 const struct wiphy_vendor_command *vcmd;
11415
11416 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11417
11418 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11419 continue;
11420
11421 if (!vcmd->dumpit) {
11422 err = -EOPNOTSUPP;
11423 goto out_unlock;
11424 }
11425
11426 vcmd_idx = i;
11427 break;
11428 }
11429
11430 if (vcmd_idx < 0) {
11431 err = -EOPNOTSUPP;
11432 goto out_unlock;
11433 }
11434
11435 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11436 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11437 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11438 }
11439
11440 /* 0 is the first index - add 1 to parse only once */
11441 cb->args[0] = (*rdev)->wiphy_idx + 1;
11442 /* add 1 to know if it was NULL */
11443 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11444 cb->args[2] = vcmd_idx;
11445 cb->args[3] = (unsigned long)data;
11446 cb->args[4] = data_len;
11447
11448 /* keep rtnl locked in successful case */
11449 return 0;
11450 out_unlock:
11451 rtnl_unlock();
11452 return err;
11453 }
11454
11455 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11456 struct netlink_callback *cb)
11457 {
11458 struct cfg80211_registered_device *rdev;
11459 struct wireless_dev *wdev;
11460 unsigned int vcmd_idx;
11461 const struct wiphy_vendor_command *vcmd;
11462 void *data;
11463 int data_len;
11464 int err;
11465 struct nlattr *vendor_data;
11466
11467 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11468 if (err)
11469 return err;
11470
11471 vcmd_idx = cb->args[2];
11472 data = (void *)cb->args[3];
11473 data_len = cb->args[4];
11474 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11475
11476 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11477 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11478 if (!wdev)
11479 return -EINVAL;
11480 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11481 !wdev->netdev)
11482 return -EINVAL;
11483
11484 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11485 if (!wdev_running(wdev))
11486 return -ENETDOWN;
11487 }
11488 }
11489
11490 while (1) {
11491 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11492 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11493 NL80211_CMD_VENDOR);
11494 if (!hdr)
11495 break;
11496
11497 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11498 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11499 wdev_id(wdev),
11500 NL80211_ATTR_PAD))) {
11501 genlmsg_cancel(skb, hdr);
11502 break;
11503 }
11504
11505 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11506 if (!vendor_data) {
11507 genlmsg_cancel(skb, hdr);
11508 break;
11509 }
11510
11511 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11512 (unsigned long *)&cb->args[5]);
11513 nla_nest_end(skb, vendor_data);
11514
11515 if (err == -ENOBUFS || err == -ENOENT) {
11516 genlmsg_cancel(skb, hdr);
11517 break;
11518 } else if (err) {
11519 genlmsg_cancel(skb, hdr);
11520 goto out;
11521 }
11522
11523 genlmsg_end(skb, hdr);
11524 }
11525
11526 err = skb->len;
11527 out:
11528 rtnl_unlock();
11529 return err;
11530 }
11531
11532 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11533 enum nl80211_commands cmd,
11534 enum nl80211_attrs attr,
11535 int approxlen)
11536 {
11537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11538
11539 if (WARN_ON(!rdev->cur_cmd_info))
11540 return NULL;
11541
11542 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11543 rdev->cur_cmd_info->snd_portid,
11544 rdev->cur_cmd_info->snd_seq,
11545 cmd, attr, NULL, GFP_KERNEL);
11546 }
11547 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11548
11549 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11550 {
11551 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11552 void *hdr = ((void **)skb->cb)[1];
11553 struct nlattr *data = ((void **)skb->cb)[2];
11554
11555 /* clear CB data for netlink core to own from now on */
11556 memset(skb->cb, 0, sizeof(skb->cb));
11557
11558 if (WARN_ON(!rdev->cur_cmd_info)) {
11559 kfree_skb(skb);
11560 return -EINVAL;
11561 }
11562
11563 nla_nest_end(skb, data);
11564 genlmsg_end(skb, hdr);
11565 return genlmsg_reply(skb, rdev->cur_cmd_info);
11566 }
11567 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11568
11569 static int nl80211_set_qos_map(struct sk_buff *skb,
11570 struct genl_info *info)
11571 {
11572 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11573 struct cfg80211_qos_map *qos_map = NULL;
11574 struct net_device *dev = info->user_ptr[1];
11575 u8 *pos, len, num_des, des_len, des;
11576 int ret;
11577
11578 if (!rdev->ops->set_qos_map)
11579 return -EOPNOTSUPP;
11580
11581 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11582 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11583 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11584
11585 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11586 len > IEEE80211_QOS_MAP_LEN_MAX)
11587 return -EINVAL;
11588
11589 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11590 if (!qos_map)
11591 return -ENOMEM;
11592
11593 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11594 if (num_des) {
11595 des_len = num_des *
11596 sizeof(struct cfg80211_dscp_exception);
11597 memcpy(qos_map->dscp_exception, pos, des_len);
11598 qos_map->num_des = num_des;
11599 for (des = 0; des < num_des; des++) {
11600 if (qos_map->dscp_exception[des].up > 7) {
11601 kfree(qos_map);
11602 return -EINVAL;
11603 }
11604 }
11605 pos += des_len;
11606 }
11607 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11608 }
11609
11610 wdev_lock(dev->ieee80211_ptr);
11611 ret = nl80211_key_allowed(dev->ieee80211_ptr);
11612 if (!ret)
11613 ret = rdev_set_qos_map(rdev, dev, qos_map);
11614 wdev_unlock(dev->ieee80211_ptr);
11615
11616 kfree(qos_map);
11617 return ret;
11618 }
11619
11620 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11621 {
11622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11623 struct net_device *dev = info->user_ptr[1];
11624 struct wireless_dev *wdev = dev->ieee80211_ptr;
11625 const u8 *peer;
11626 u8 tsid, up;
11627 u16 admitted_time = 0;
11628 int err;
11629
11630 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11631 return -EOPNOTSUPP;
11632
11633 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11634 !info->attrs[NL80211_ATTR_USER_PRIO])
11635 return -EINVAL;
11636
11637 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11638 if (tsid >= IEEE80211_NUM_TIDS)
11639 return -EINVAL;
11640
11641 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11642 if (up >= IEEE80211_NUM_UPS)
11643 return -EINVAL;
11644
11645 /* WMM uses TIDs 0-7 even for TSPEC */
11646 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11647 /* TODO: handle 802.11 TSPEC/admission control
11648 * need more attributes for that (e.g. BA session requirement);
11649 * change the WMM adminssion test above to allow both then
11650 */
11651 return -EINVAL;
11652 }
11653
11654 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11655
11656 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11657 admitted_time =
11658 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11659 if (!admitted_time)
11660 return -EINVAL;
11661 }
11662
11663 wdev_lock(wdev);
11664 switch (wdev->iftype) {
11665 case NL80211_IFTYPE_STATION:
11666 case NL80211_IFTYPE_P2P_CLIENT:
11667 if (wdev->current_bss)
11668 break;
11669 err = -ENOTCONN;
11670 goto out;
11671 default:
11672 err = -EOPNOTSUPP;
11673 goto out;
11674 }
11675
11676 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11677
11678 out:
11679 wdev_unlock(wdev);
11680 return err;
11681 }
11682
11683 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11684 {
11685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11686 struct net_device *dev = info->user_ptr[1];
11687 struct wireless_dev *wdev = dev->ieee80211_ptr;
11688 const u8 *peer;
11689 u8 tsid;
11690 int err;
11691
11692 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11693 return -EINVAL;
11694
11695 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11696 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11697
11698 wdev_lock(wdev);
11699 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11700 wdev_unlock(wdev);
11701
11702 return err;
11703 }
11704
11705 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11706 struct genl_info *info)
11707 {
11708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11709 struct net_device *dev = info->user_ptr[1];
11710 struct wireless_dev *wdev = dev->ieee80211_ptr;
11711 struct cfg80211_chan_def chandef = {};
11712 const u8 *addr;
11713 u8 oper_class;
11714 int err;
11715
11716 if (!rdev->ops->tdls_channel_switch ||
11717 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11718 return -EOPNOTSUPP;
11719
11720 switch (dev->ieee80211_ptr->iftype) {
11721 case NL80211_IFTYPE_STATION:
11722 case NL80211_IFTYPE_P2P_CLIENT:
11723 break;
11724 default:
11725 return -EOPNOTSUPP;
11726 }
11727
11728 if (!info->attrs[NL80211_ATTR_MAC] ||
11729 !info->attrs[NL80211_ATTR_OPER_CLASS])
11730 return -EINVAL;
11731
11732 err = nl80211_parse_chandef(rdev, info, &chandef);
11733 if (err)
11734 return err;
11735
11736 /*
11737 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11738 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11739 * specification is not defined for them.
11740 */
11741 if (chandef.chan->band == NL80211_BAND_2GHZ &&
11742 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11743 chandef.width != NL80211_CHAN_WIDTH_20)
11744 return -EINVAL;
11745
11746 /* we will be active on the TDLS link */
11747 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11748 wdev->iftype))
11749 return -EINVAL;
11750
11751 /* don't allow switching to DFS channels */
11752 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11753 return -EINVAL;
11754
11755 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11756 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11757
11758 wdev_lock(wdev);
11759 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11760 wdev_unlock(wdev);
11761
11762 return err;
11763 }
11764
11765 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11766 struct genl_info *info)
11767 {
11768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11769 struct net_device *dev = info->user_ptr[1];
11770 struct wireless_dev *wdev = dev->ieee80211_ptr;
11771 const u8 *addr;
11772
11773 if (!rdev->ops->tdls_channel_switch ||
11774 !rdev->ops->tdls_cancel_channel_switch ||
11775 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11776 return -EOPNOTSUPP;
11777
11778 switch (dev->ieee80211_ptr->iftype) {
11779 case NL80211_IFTYPE_STATION:
11780 case NL80211_IFTYPE_P2P_CLIENT:
11781 break;
11782 default:
11783 return -EOPNOTSUPP;
11784 }
11785
11786 if (!info->attrs[NL80211_ATTR_MAC])
11787 return -EINVAL;
11788
11789 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11790
11791 wdev_lock(wdev);
11792 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11793 wdev_unlock(wdev);
11794
11795 return 0;
11796 }
11797
11798 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11799 struct genl_info *info)
11800 {
11801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11802 struct net_device *dev = info->user_ptr[1];
11803 struct wireless_dev *wdev = dev->ieee80211_ptr;
11804 const struct nlattr *nla;
11805 bool enabled;
11806
11807 if (!rdev->ops->set_multicast_to_unicast)
11808 return -EOPNOTSUPP;
11809
11810 if (wdev->iftype != NL80211_IFTYPE_AP &&
11811 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11812 return -EOPNOTSUPP;
11813
11814 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11815 enabled = nla_get_flag(nla);
11816
11817 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11818 }
11819
11820 #define NL80211_FLAG_NEED_WIPHY 0x01
11821 #define NL80211_FLAG_NEED_NETDEV 0x02
11822 #define NL80211_FLAG_NEED_RTNL 0x04
11823 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11824 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11825 NL80211_FLAG_CHECK_NETDEV_UP)
11826 #define NL80211_FLAG_NEED_WDEV 0x10
11827 /* If a netdev is associated, it must be UP, P2P must be started */
11828 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11829 NL80211_FLAG_CHECK_NETDEV_UP)
11830 #define NL80211_FLAG_CLEAR_SKB 0x20
11831
11832 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11833 struct genl_info *info)
11834 {
11835 struct cfg80211_registered_device *rdev;
11836 struct wireless_dev *wdev;
11837 struct net_device *dev;
11838 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11839
11840 if (rtnl)
11841 rtnl_lock();
11842
11843 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11844 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11845 if (IS_ERR(rdev)) {
11846 if (rtnl)
11847 rtnl_unlock();
11848 return PTR_ERR(rdev);
11849 }
11850 info->user_ptr[0] = rdev;
11851 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11852 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11853 ASSERT_RTNL();
11854
11855 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11856 info->attrs);
11857 if (IS_ERR(wdev)) {
11858 if (rtnl)
11859 rtnl_unlock();
11860 return PTR_ERR(wdev);
11861 }
11862
11863 dev = wdev->netdev;
11864 rdev = wiphy_to_rdev(wdev->wiphy);
11865
11866 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11867 if (!dev) {
11868 if (rtnl)
11869 rtnl_unlock();
11870 return -EINVAL;
11871 }
11872
11873 info->user_ptr[1] = dev;
11874 } else {
11875 info->user_ptr[1] = wdev;
11876 }
11877
11878 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11879 !wdev_running(wdev)) {
11880 if (rtnl)
11881 rtnl_unlock();
11882 return -ENETDOWN;
11883 }
11884
11885 if (dev)
11886 dev_hold(dev);
11887
11888 info->user_ptr[0] = rdev;
11889 }
11890
11891 return 0;
11892 }
11893
11894 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11895 struct genl_info *info)
11896 {
11897 if (info->user_ptr[1]) {
11898 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11899 struct wireless_dev *wdev = info->user_ptr[1];
11900
11901 if (wdev->netdev)
11902 dev_put(wdev->netdev);
11903 } else {
11904 dev_put(info->user_ptr[1]);
11905 }
11906 }
11907
11908 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11909 rtnl_unlock();
11910
11911 /* If needed, clear the netlink message payload from the SKB
11912 * as it might contain key data that shouldn't stick around on
11913 * the heap after the SKB is freed. The netlink message header
11914 * is still needed for further processing, so leave it intact.
11915 */
11916 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11917 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11918
11919 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11920 }
11921 }
11922
11923 static const struct genl_ops nl80211_ops[] = {
11924 {
11925 .cmd = NL80211_CMD_GET_WIPHY,
11926 .doit = nl80211_get_wiphy,
11927 .dumpit = nl80211_dump_wiphy,
11928 .done = nl80211_dump_wiphy_done,
11929 .policy = nl80211_policy,
11930 /* can be retrieved by unprivileged users */
11931 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11932 NL80211_FLAG_NEED_RTNL,
11933 },
11934 {
11935 .cmd = NL80211_CMD_SET_WIPHY,
11936 .doit = nl80211_set_wiphy,
11937 .policy = nl80211_policy,
11938 .flags = GENL_UNS_ADMIN_PERM,
11939 .internal_flags = NL80211_FLAG_NEED_RTNL,
11940 },
11941 {
11942 .cmd = NL80211_CMD_GET_INTERFACE,
11943 .doit = nl80211_get_interface,
11944 .dumpit = nl80211_dump_interface,
11945 .policy = nl80211_policy,
11946 /* can be retrieved by unprivileged users */
11947 .internal_flags = NL80211_FLAG_NEED_WDEV |
11948 NL80211_FLAG_NEED_RTNL,
11949 },
11950 {
11951 .cmd = NL80211_CMD_SET_INTERFACE,
11952 .doit = nl80211_set_interface,
11953 .policy = nl80211_policy,
11954 .flags = GENL_UNS_ADMIN_PERM,
11955 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11956 NL80211_FLAG_NEED_RTNL,
11957 },
11958 {
11959 .cmd = NL80211_CMD_NEW_INTERFACE,
11960 .doit = nl80211_new_interface,
11961 .policy = nl80211_policy,
11962 .flags = GENL_UNS_ADMIN_PERM,
11963 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11964 NL80211_FLAG_NEED_RTNL,
11965 },
11966 {
11967 .cmd = NL80211_CMD_DEL_INTERFACE,
11968 .doit = nl80211_del_interface,
11969 .policy = nl80211_policy,
11970 .flags = GENL_UNS_ADMIN_PERM,
11971 .internal_flags = NL80211_FLAG_NEED_WDEV |
11972 NL80211_FLAG_NEED_RTNL,
11973 },
11974 {
11975 .cmd = NL80211_CMD_GET_KEY,
11976 .doit = nl80211_get_key,
11977 .policy = nl80211_policy,
11978 .flags = GENL_UNS_ADMIN_PERM,
11979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11980 NL80211_FLAG_NEED_RTNL,
11981 },
11982 {
11983 .cmd = NL80211_CMD_SET_KEY,
11984 .doit = nl80211_set_key,
11985 .policy = nl80211_policy,
11986 .flags = GENL_UNS_ADMIN_PERM,
11987 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11988 NL80211_FLAG_NEED_RTNL |
11989 NL80211_FLAG_CLEAR_SKB,
11990 },
11991 {
11992 .cmd = NL80211_CMD_NEW_KEY,
11993 .doit = nl80211_new_key,
11994 .policy = nl80211_policy,
11995 .flags = GENL_UNS_ADMIN_PERM,
11996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11997 NL80211_FLAG_NEED_RTNL |
11998 NL80211_FLAG_CLEAR_SKB,
11999 },
12000 {
12001 .cmd = NL80211_CMD_DEL_KEY,
12002 .doit = nl80211_del_key,
12003 .policy = nl80211_policy,
12004 .flags = GENL_UNS_ADMIN_PERM,
12005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12006 NL80211_FLAG_NEED_RTNL,
12007 },
12008 {
12009 .cmd = NL80211_CMD_SET_BEACON,
12010 .policy = nl80211_policy,
12011 .flags = GENL_UNS_ADMIN_PERM,
12012 .doit = nl80211_set_beacon,
12013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12014 NL80211_FLAG_NEED_RTNL,
12015 },
12016 {
12017 .cmd = NL80211_CMD_START_AP,
12018 .policy = nl80211_policy,
12019 .flags = GENL_UNS_ADMIN_PERM,
12020 .doit = nl80211_start_ap,
12021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12022 NL80211_FLAG_NEED_RTNL,
12023 },
12024 {
12025 .cmd = NL80211_CMD_STOP_AP,
12026 .policy = nl80211_policy,
12027 .flags = GENL_UNS_ADMIN_PERM,
12028 .doit = nl80211_stop_ap,
12029 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12030 NL80211_FLAG_NEED_RTNL,
12031 },
12032 {
12033 .cmd = NL80211_CMD_GET_STATION,
12034 .doit = nl80211_get_station,
12035 .dumpit = nl80211_dump_station,
12036 .policy = nl80211_policy,
12037 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12038 NL80211_FLAG_NEED_RTNL,
12039 },
12040 {
12041 .cmd = NL80211_CMD_SET_STATION,
12042 .doit = nl80211_set_station,
12043 .policy = nl80211_policy,
12044 .flags = GENL_UNS_ADMIN_PERM,
12045 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12046 NL80211_FLAG_NEED_RTNL,
12047 },
12048 {
12049 .cmd = NL80211_CMD_NEW_STATION,
12050 .doit = nl80211_new_station,
12051 .policy = nl80211_policy,
12052 .flags = GENL_UNS_ADMIN_PERM,
12053 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12054 NL80211_FLAG_NEED_RTNL,
12055 },
12056 {
12057 .cmd = NL80211_CMD_DEL_STATION,
12058 .doit = nl80211_del_station,
12059 .policy = nl80211_policy,
12060 .flags = GENL_UNS_ADMIN_PERM,
12061 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12062 NL80211_FLAG_NEED_RTNL,
12063 },
12064 {
12065 .cmd = NL80211_CMD_GET_MPATH,
12066 .doit = nl80211_get_mpath,
12067 .dumpit = nl80211_dump_mpath,
12068 .policy = nl80211_policy,
12069 .flags = GENL_UNS_ADMIN_PERM,
12070 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12071 NL80211_FLAG_NEED_RTNL,
12072 },
12073 {
12074 .cmd = NL80211_CMD_GET_MPP,
12075 .doit = nl80211_get_mpp,
12076 .dumpit = nl80211_dump_mpp,
12077 .policy = nl80211_policy,
12078 .flags = GENL_UNS_ADMIN_PERM,
12079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12080 NL80211_FLAG_NEED_RTNL,
12081 },
12082 {
12083 .cmd = NL80211_CMD_SET_MPATH,
12084 .doit = nl80211_set_mpath,
12085 .policy = nl80211_policy,
12086 .flags = GENL_UNS_ADMIN_PERM,
12087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12088 NL80211_FLAG_NEED_RTNL,
12089 },
12090 {
12091 .cmd = NL80211_CMD_NEW_MPATH,
12092 .doit = nl80211_new_mpath,
12093 .policy = nl80211_policy,
12094 .flags = GENL_UNS_ADMIN_PERM,
12095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12096 NL80211_FLAG_NEED_RTNL,
12097 },
12098 {
12099 .cmd = NL80211_CMD_DEL_MPATH,
12100 .doit = nl80211_del_mpath,
12101 .policy = nl80211_policy,
12102 .flags = GENL_UNS_ADMIN_PERM,
12103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12104 NL80211_FLAG_NEED_RTNL,
12105 },
12106 {
12107 .cmd = NL80211_CMD_SET_BSS,
12108 .doit = nl80211_set_bss,
12109 .policy = nl80211_policy,
12110 .flags = GENL_UNS_ADMIN_PERM,
12111 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12112 NL80211_FLAG_NEED_RTNL,
12113 },
12114 {
12115 .cmd = NL80211_CMD_GET_REG,
12116 .doit = nl80211_get_reg_do,
12117 .dumpit = nl80211_get_reg_dump,
12118 .policy = nl80211_policy,
12119 .internal_flags = NL80211_FLAG_NEED_RTNL,
12120 /* can be retrieved by unprivileged users */
12121 },
12122 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12123 {
12124 .cmd = NL80211_CMD_SET_REG,
12125 .doit = nl80211_set_reg,
12126 .policy = nl80211_policy,
12127 .flags = GENL_ADMIN_PERM,
12128 .internal_flags = NL80211_FLAG_NEED_RTNL,
12129 },
12130 #endif
12131 {
12132 .cmd = NL80211_CMD_REQ_SET_REG,
12133 .doit = nl80211_req_set_reg,
12134 .policy = nl80211_policy,
12135 .flags = GENL_ADMIN_PERM,
12136 },
12137 {
12138 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12139 .doit = nl80211_get_mesh_config,
12140 .policy = nl80211_policy,
12141 /* can be retrieved by unprivileged users */
12142 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12143 NL80211_FLAG_NEED_RTNL,
12144 },
12145 {
12146 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12147 .doit = nl80211_update_mesh_config,
12148 .policy = nl80211_policy,
12149 .flags = GENL_UNS_ADMIN_PERM,
12150 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12151 NL80211_FLAG_NEED_RTNL,
12152 },
12153 {
12154 .cmd = NL80211_CMD_TRIGGER_SCAN,
12155 .doit = nl80211_trigger_scan,
12156 .policy = nl80211_policy,
12157 .flags = GENL_UNS_ADMIN_PERM,
12158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12159 NL80211_FLAG_NEED_RTNL,
12160 },
12161 {
12162 .cmd = NL80211_CMD_ABORT_SCAN,
12163 .doit = nl80211_abort_scan,
12164 .policy = nl80211_policy,
12165 .flags = GENL_UNS_ADMIN_PERM,
12166 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12167 NL80211_FLAG_NEED_RTNL,
12168 },
12169 {
12170 .cmd = NL80211_CMD_GET_SCAN,
12171 .policy = nl80211_policy,
12172 .dumpit = nl80211_dump_scan,
12173 },
12174 {
12175 .cmd = NL80211_CMD_START_SCHED_SCAN,
12176 .doit = nl80211_start_sched_scan,
12177 .policy = nl80211_policy,
12178 .flags = GENL_UNS_ADMIN_PERM,
12179 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12180 NL80211_FLAG_NEED_RTNL,
12181 },
12182 {
12183 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12184 .doit = nl80211_stop_sched_scan,
12185 .policy = nl80211_policy,
12186 .flags = GENL_UNS_ADMIN_PERM,
12187 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12188 NL80211_FLAG_NEED_RTNL,
12189 },
12190 {
12191 .cmd = NL80211_CMD_AUTHENTICATE,
12192 .doit = nl80211_authenticate,
12193 .policy = nl80211_policy,
12194 .flags = GENL_UNS_ADMIN_PERM,
12195 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12196 NL80211_FLAG_NEED_RTNL |
12197 NL80211_FLAG_CLEAR_SKB,
12198 },
12199 {
12200 .cmd = NL80211_CMD_ASSOCIATE,
12201 .doit = nl80211_associate,
12202 .policy = nl80211_policy,
12203 .flags = GENL_UNS_ADMIN_PERM,
12204 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12205 NL80211_FLAG_NEED_RTNL,
12206 },
12207 {
12208 .cmd = NL80211_CMD_DEAUTHENTICATE,
12209 .doit = nl80211_deauthenticate,
12210 .policy = nl80211_policy,
12211 .flags = GENL_UNS_ADMIN_PERM,
12212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12213 NL80211_FLAG_NEED_RTNL,
12214 },
12215 {
12216 .cmd = NL80211_CMD_DISASSOCIATE,
12217 .doit = nl80211_disassociate,
12218 .policy = nl80211_policy,
12219 .flags = GENL_UNS_ADMIN_PERM,
12220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12221 NL80211_FLAG_NEED_RTNL,
12222 },
12223 {
12224 .cmd = NL80211_CMD_JOIN_IBSS,
12225 .doit = nl80211_join_ibss,
12226 .policy = nl80211_policy,
12227 .flags = GENL_UNS_ADMIN_PERM,
12228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12229 NL80211_FLAG_NEED_RTNL,
12230 },
12231 {
12232 .cmd = NL80211_CMD_LEAVE_IBSS,
12233 .doit = nl80211_leave_ibss,
12234 .policy = nl80211_policy,
12235 .flags = GENL_UNS_ADMIN_PERM,
12236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12237 NL80211_FLAG_NEED_RTNL,
12238 },
12239 #ifdef CONFIG_NL80211_TESTMODE
12240 {
12241 .cmd = NL80211_CMD_TESTMODE,
12242 .doit = nl80211_testmode_do,
12243 .dumpit = nl80211_testmode_dump,
12244 .policy = nl80211_policy,
12245 .flags = GENL_UNS_ADMIN_PERM,
12246 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12247 NL80211_FLAG_NEED_RTNL,
12248 },
12249 #endif
12250 {
12251 .cmd = NL80211_CMD_CONNECT,
12252 .doit = nl80211_connect,
12253 .policy = nl80211_policy,
12254 .flags = GENL_UNS_ADMIN_PERM,
12255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12256 NL80211_FLAG_NEED_RTNL,
12257 },
12258 {
12259 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12260 .doit = nl80211_update_connect_params,
12261 .policy = nl80211_policy,
12262 .flags = GENL_ADMIN_PERM,
12263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12264 NL80211_FLAG_NEED_RTNL,
12265 },
12266 {
12267 .cmd = NL80211_CMD_DISCONNECT,
12268 .doit = nl80211_disconnect,
12269 .policy = nl80211_policy,
12270 .flags = GENL_UNS_ADMIN_PERM,
12271 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12272 NL80211_FLAG_NEED_RTNL,
12273 },
12274 {
12275 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12276 .doit = nl80211_wiphy_netns,
12277 .policy = nl80211_policy,
12278 .flags = GENL_UNS_ADMIN_PERM,
12279 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12280 NL80211_FLAG_NEED_RTNL,
12281 },
12282 {
12283 .cmd = NL80211_CMD_GET_SURVEY,
12284 .policy = nl80211_policy,
12285 .dumpit = nl80211_dump_survey,
12286 },
12287 {
12288 .cmd = NL80211_CMD_SET_PMKSA,
12289 .doit = nl80211_setdel_pmksa,
12290 .policy = nl80211_policy,
12291 .flags = GENL_UNS_ADMIN_PERM,
12292 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12293 NL80211_FLAG_NEED_RTNL,
12294 },
12295 {
12296 .cmd = NL80211_CMD_DEL_PMKSA,
12297 .doit = nl80211_setdel_pmksa,
12298 .policy = nl80211_policy,
12299 .flags = GENL_UNS_ADMIN_PERM,
12300 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12301 NL80211_FLAG_NEED_RTNL,
12302 },
12303 {
12304 .cmd = NL80211_CMD_FLUSH_PMKSA,
12305 .doit = nl80211_flush_pmksa,
12306 .policy = nl80211_policy,
12307 .flags = GENL_UNS_ADMIN_PERM,
12308 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12309 NL80211_FLAG_NEED_RTNL,
12310 },
12311 {
12312 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12313 .doit = nl80211_remain_on_channel,
12314 .policy = nl80211_policy,
12315 .flags = GENL_UNS_ADMIN_PERM,
12316 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12317 NL80211_FLAG_NEED_RTNL,
12318 },
12319 {
12320 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12321 .doit = nl80211_cancel_remain_on_channel,
12322 .policy = nl80211_policy,
12323 .flags = GENL_UNS_ADMIN_PERM,
12324 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12325 NL80211_FLAG_NEED_RTNL,
12326 },
12327 {
12328 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12329 .doit = nl80211_set_tx_bitrate_mask,
12330 .policy = nl80211_policy,
12331 .flags = GENL_UNS_ADMIN_PERM,
12332 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12333 NL80211_FLAG_NEED_RTNL,
12334 },
12335 {
12336 .cmd = NL80211_CMD_REGISTER_FRAME,
12337 .doit = nl80211_register_mgmt,
12338 .policy = nl80211_policy,
12339 .flags = GENL_UNS_ADMIN_PERM,
12340 .internal_flags = NL80211_FLAG_NEED_WDEV |
12341 NL80211_FLAG_NEED_RTNL,
12342 },
12343 {
12344 .cmd = NL80211_CMD_FRAME,
12345 .doit = nl80211_tx_mgmt,
12346 .policy = nl80211_policy,
12347 .flags = GENL_UNS_ADMIN_PERM,
12348 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12349 NL80211_FLAG_NEED_RTNL,
12350 },
12351 {
12352 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12353 .doit = nl80211_tx_mgmt_cancel_wait,
12354 .policy = nl80211_policy,
12355 .flags = GENL_UNS_ADMIN_PERM,
12356 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12357 NL80211_FLAG_NEED_RTNL,
12358 },
12359 {
12360 .cmd = NL80211_CMD_SET_POWER_SAVE,
12361 .doit = nl80211_set_power_save,
12362 .policy = nl80211_policy,
12363 .flags = GENL_UNS_ADMIN_PERM,
12364 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12365 NL80211_FLAG_NEED_RTNL,
12366 },
12367 {
12368 .cmd = NL80211_CMD_GET_POWER_SAVE,
12369 .doit = nl80211_get_power_save,
12370 .policy = nl80211_policy,
12371 /* can be retrieved by unprivileged users */
12372 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12373 NL80211_FLAG_NEED_RTNL,
12374 },
12375 {
12376 .cmd = NL80211_CMD_SET_CQM,
12377 .doit = nl80211_set_cqm,
12378 .policy = nl80211_policy,
12379 .flags = GENL_UNS_ADMIN_PERM,
12380 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12381 NL80211_FLAG_NEED_RTNL,
12382 },
12383 {
12384 .cmd = NL80211_CMD_SET_CHANNEL,
12385 .doit = nl80211_set_channel,
12386 .policy = nl80211_policy,
12387 .flags = GENL_UNS_ADMIN_PERM,
12388 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12389 NL80211_FLAG_NEED_RTNL,
12390 },
12391 {
12392 .cmd = NL80211_CMD_SET_WDS_PEER,
12393 .doit = nl80211_set_wds_peer,
12394 .policy = nl80211_policy,
12395 .flags = GENL_UNS_ADMIN_PERM,
12396 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12397 NL80211_FLAG_NEED_RTNL,
12398 },
12399 {
12400 .cmd = NL80211_CMD_JOIN_MESH,
12401 .doit = nl80211_join_mesh,
12402 .policy = nl80211_policy,
12403 .flags = GENL_UNS_ADMIN_PERM,
12404 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12405 NL80211_FLAG_NEED_RTNL,
12406 },
12407 {
12408 .cmd = NL80211_CMD_LEAVE_MESH,
12409 .doit = nl80211_leave_mesh,
12410 .policy = nl80211_policy,
12411 .flags = GENL_UNS_ADMIN_PERM,
12412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12413 NL80211_FLAG_NEED_RTNL,
12414 },
12415 {
12416 .cmd = NL80211_CMD_JOIN_OCB,
12417 .doit = nl80211_join_ocb,
12418 .policy = nl80211_policy,
12419 .flags = GENL_UNS_ADMIN_PERM,
12420 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12421 NL80211_FLAG_NEED_RTNL,
12422 },
12423 {
12424 .cmd = NL80211_CMD_LEAVE_OCB,
12425 .doit = nl80211_leave_ocb,
12426 .policy = nl80211_policy,
12427 .flags = GENL_UNS_ADMIN_PERM,
12428 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12429 NL80211_FLAG_NEED_RTNL,
12430 },
12431 #ifdef CONFIG_PM
12432 {
12433 .cmd = NL80211_CMD_GET_WOWLAN,
12434 .doit = nl80211_get_wowlan,
12435 .policy = nl80211_policy,
12436 /* can be retrieved by unprivileged users */
12437 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12438 NL80211_FLAG_NEED_RTNL,
12439 },
12440 {
12441 .cmd = NL80211_CMD_SET_WOWLAN,
12442 .doit = nl80211_set_wowlan,
12443 .policy = nl80211_policy,
12444 .flags = GENL_UNS_ADMIN_PERM,
12445 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12446 NL80211_FLAG_NEED_RTNL,
12447 },
12448 #endif
12449 {
12450 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12451 .doit = nl80211_set_rekey_data,
12452 .policy = nl80211_policy,
12453 .flags = GENL_UNS_ADMIN_PERM,
12454 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12455 NL80211_FLAG_NEED_RTNL |
12456 NL80211_FLAG_CLEAR_SKB,
12457 },
12458 {
12459 .cmd = NL80211_CMD_TDLS_MGMT,
12460 .doit = nl80211_tdls_mgmt,
12461 .policy = nl80211_policy,
12462 .flags = GENL_UNS_ADMIN_PERM,
12463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12464 NL80211_FLAG_NEED_RTNL,
12465 },
12466 {
12467 .cmd = NL80211_CMD_TDLS_OPER,
12468 .doit = nl80211_tdls_oper,
12469 .policy = nl80211_policy,
12470 .flags = GENL_UNS_ADMIN_PERM,
12471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12472 NL80211_FLAG_NEED_RTNL,
12473 },
12474 {
12475 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12476 .doit = nl80211_register_unexpected_frame,
12477 .policy = nl80211_policy,
12478 .flags = GENL_UNS_ADMIN_PERM,
12479 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12480 NL80211_FLAG_NEED_RTNL,
12481 },
12482 {
12483 .cmd = NL80211_CMD_PROBE_CLIENT,
12484 .doit = nl80211_probe_client,
12485 .policy = nl80211_policy,
12486 .flags = GENL_UNS_ADMIN_PERM,
12487 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12488 NL80211_FLAG_NEED_RTNL,
12489 },
12490 {
12491 .cmd = NL80211_CMD_REGISTER_BEACONS,
12492 .doit = nl80211_register_beacons,
12493 .policy = nl80211_policy,
12494 .flags = GENL_UNS_ADMIN_PERM,
12495 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12496 NL80211_FLAG_NEED_RTNL,
12497 },
12498 {
12499 .cmd = NL80211_CMD_SET_NOACK_MAP,
12500 .doit = nl80211_set_noack_map,
12501 .policy = nl80211_policy,
12502 .flags = GENL_UNS_ADMIN_PERM,
12503 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12504 NL80211_FLAG_NEED_RTNL,
12505 },
12506 {
12507 .cmd = NL80211_CMD_START_P2P_DEVICE,
12508 .doit = nl80211_start_p2p_device,
12509 .policy = nl80211_policy,
12510 .flags = GENL_UNS_ADMIN_PERM,
12511 .internal_flags = NL80211_FLAG_NEED_WDEV |
12512 NL80211_FLAG_NEED_RTNL,
12513 },
12514 {
12515 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12516 .doit = nl80211_stop_p2p_device,
12517 .policy = nl80211_policy,
12518 .flags = GENL_UNS_ADMIN_PERM,
12519 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12520 NL80211_FLAG_NEED_RTNL,
12521 },
12522 {
12523 .cmd = NL80211_CMD_START_NAN,
12524 .doit = nl80211_start_nan,
12525 .policy = nl80211_policy,
12526 .flags = GENL_ADMIN_PERM,
12527 .internal_flags = NL80211_FLAG_NEED_WDEV |
12528 NL80211_FLAG_NEED_RTNL,
12529 },
12530 {
12531 .cmd = NL80211_CMD_STOP_NAN,
12532 .doit = nl80211_stop_nan,
12533 .policy = nl80211_policy,
12534 .flags = GENL_ADMIN_PERM,
12535 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12536 NL80211_FLAG_NEED_RTNL,
12537 },
12538 {
12539 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12540 .doit = nl80211_nan_add_func,
12541 .policy = nl80211_policy,
12542 .flags = GENL_ADMIN_PERM,
12543 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12544 NL80211_FLAG_NEED_RTNL,
12545 },
12546 {
12547 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12548 .doit = nl80211_nan_del_func,
12549 .policy = nl80211_policy,
12550 .flags = GENL_ADMIN_PERM,
12551 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12552 NL80211_FLAG_NEED_RTNL,
12553 },
12554 {
12555 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12556 .doit = nl80211_nan_change_config,
12557 .policy = nl80211_policy,
12558 .flags = GENL_ADMIN_PERM,
12559 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12560 NL80211_FLAG_NEED_RTNL,
12561 },
12562 {
12563 .cmd = NL80211_CMD_SET_MCAST_RATE,
12564 .doit = nl80211_set_mcast_rate,
12565 .policy = nl80211_policy,
12566 .flags = GENL_UNS_ADMIN_PERM,
12567 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12568 NL80211_FLAG_NEED_RTNL,
12569 },
12570 {
12571 .cmd = NL80211_CMD_SET_MAC_ACL,
12572 .doit = nl80211_set_mac_acl,
12573 .policy = nl80211_policy,
12574 .flags = GENL_UNS_ADMIN_PERM,
12575 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12576 NL80211_FLAG_NEED_RTNL,
12577 },
12578 {
12579 .cmd = NL80211_CMD_RADAR_DETECT,
12580 .doit = nl80211_start_radar_detection,
12581 .policy = nl80211_policy,
12582 .flags = GENL_UNS_ADMIN_PERM,
12583 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12584 NL80211_FLAG_NEED_RTNL,
12585 },
12586 {
12587 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12588 .doit = nl80211_get_protocol_features,
12589 .policy = nl80211_policy,
12590 },
12591 {
12592 .cmd = NL80211_CMD_UPDATE_FT_IES,
12593 .doit = nl80211_update_ft_ies,
12594 .policy = nl80211_policy,
12595 .flags = GENL_UNS_ADMIN_PERM,
12596 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12597 NL80211_FLAG_NEED_RTNL,
12598 },
12599 {
12600 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12601 .doit = nl80211_crit_protocol_start,
12602 .policy = nl80211_policy,
12603 .flags = GENL_UNS_ADMIN_PERM,
12604 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12605 NL80211_FLAG_NEED_RTNL,
12606 },
12607 {
12608 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12609 .doit = nl80211_crit_protocol_stop,
12610 .policy = nl80211_policy,
12611 .flags = GENL_UNS_ADMIN_PERM,
12612 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12613 NL80211_FLAG_NEED_RTNL,
12614 },
12615 {
12616 .cmd = NL80211_CMD_GET_COALESCE,
12617 .doit = nl80211_get_coalesce,
12618 .policy = nl80211_policy,
12619 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12620 NL80211_FLAG_NEED_RTNL,
12621 },
12622 {
12623 .cmd = NL80211_CMD_SET_COALESCE,
12624 .doit = nl80211_set_coalesce,
12625 .policy = nl80211_policy,
12626 .flags = GENL_UNS_ADMIN_PERM,
12627 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12628 NL80211_FLAG_NEED_RTNL,
12629 },
12630 {
12631 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12632 .doit = nl80211_channel_switch,
12633 .policy = nl80211_policy,
12634 .flags = GENL_UNS_ADMIN_PERM,
12635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12636 NL80211_FLAG_NEED_RTNL,
12637 },
12638 {
12639 .cmd = NL80211_CMD_VENDOR,
12640 .doit = nl80211_vendor_cmd,
12641 .dumpit = nl80211_vendor_cmd_dump,
12642 .policy = nl80211_policy,
12643 .flags = GENL_UNS_ADMIN_PERM,
12644 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12645 NL80211_FLAG_NEED_RTNL,
12646 },
12647 {
12648 .cmd = NL80211_CMD_SET_QOS_MAP,
12649 .doit = nl80211_set_qos_map,
12650 .policy = nl80211_policy,
12651 .flags = GENL_UNS_ADMIN_PERM,
12652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12653 NL80211_FLAG_NEED_RTNL,
12654 },
12655 {
12656 .cmd = NL80211_CMD_ADD_TX_TS,
12657 .doit = nl80211_add_tx_ts,
12658 .policy = nl80211_policy,
12659 .flags = GENL_UNS_ADMIN_PERM,
12660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12661 NL80211_FLAG_NEED_RTNL,
12662 },
12663 {
12664 .cmd = NL80211_CMD_DEL_TX_TS,
12665 .doit = nl80211_del_tx_ts,
12666 .policy = nl80211_policy,
12667 .flags = GENL_UNS_ADMIN_PERM,
12668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12669 NL80211_FLAG_NEED_RTNL,
12670 },
12671 {
12672 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12673 .doit = nl80211_tdls_channel_switch,
12674 .policy = nl80211_policy,
12675 .flags = GENL_UNS_ADMIN_PERM,
12676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12677 NL80211_FLAG_NEED_RTNL,
12678 },
12679 {
12680 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12681 .doit = nl80211_tdls_cancel_channel_switch,
12682 .policy = nl80211_policy,
12683 .flags = GENL_UNS_ADMIN_PERM,
12684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12685 NL80211_FLAG_NEED_RTNL,
12686 },
12687 {
12688 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12689 .doit = nl80211_set_multicast_to_unicast,
12690 .policy = nl80211_policy,
12691 .flags = GENL_UNS_ADMIN_PERM,
12692 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12693 NL80211_FLAG_NEED_RTNL,
12694 },
12695 };
12696
12697 static struct genl_family nl80211_fam __ro_after_init = {
12698 .name = NL80211_GENL_NAME, /* have users key off the name instead */
12699 .hdrsize = 0, /* no private header */
12700 .version = 1, /* no particular meaning now */
12701 .maxattr = NL80211_ATTR_MAX,
12702 .netnsok = true,
12703 .pre_doit = nl80211_pre_doit,
12704 .post_doit = nl80211_post_doit,
12705 .module = THIS_MODULE,
12706 .ops = nl80211_ops,
12707 .n_ops = ARRAY_SIZE(nl80211_ops),
12708 .mcgrps = nl80211_mcgrps,
12709 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12710 };
12711
12712 /* notification functions */
12713
12714 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12715 enum nl80211_commands cmd)
12716 {
12717 struct sk_buff *msg;
12718 struct nl80211_dump_wiphy_state state = {};
12719
12720 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12721 cmd != NL80211_CMD_DEL_WIPHY);
12722
12723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12724 if (!msg)
12725 return;
12726
12727 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12728 nlmsg_free(msg);
12729 return;
12730 }
12731
12732 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12733 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12734 }
12735
12736 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12737 struct wireless_dev *wdev,
12738 enum nl80211_commands cmd)
12739 {
12740 struct sk_buff *msg;
12741
12742 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12743 cmd != NL80211_CMD_DEL_INTERFACE);
12744
12745 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12746 if (!msg)
12747 return;
12748
12749 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12750 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12751 nlmsg_free(msg);
12752 return;
12753 }
12754
12755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12756 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12757 }
12758
12759 static int nl80211_add_scan_req(struct sk_buff *msg,
12760 struct cfg80211_registered_device *rdev)
12761 {
12762 struct cfg80211_scan_request *req = rdev->scan_req;
12763 struct nlattr *nest;
12764 int i;
12765
12766 if (WARN_ON(!req))
12767 return 0;
12768
12769 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12770 if (!nest)
12771 goto nla_put_failure;
12772 for (i = 0; i < req->n_ssids; i++) {
12773 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12774 goto nla_put_failure;
12775 }
12776 nla_nest_end(msg, nest);
12777
12778 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12779 if (!nest)
12780 goto nla_put_failure;
12781 for (i = 0; i < req->n_channels; i++) {
12782 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12783 goto nla_put_failure;
12784 }
12785 nla_nest_end(msg, nest);
12786
12787 if (req->ie &&
12788 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12789 goto nla_put_failure;
12790
12791 if (req->flags &&
12792 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12793 goto nla_put_failure;
12794
12795 if (req->info.scan_start_tsf &&
12796 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12797 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12798 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12799 req->info.tsf_bssid)))
12800 goto nla_put_failure;
12801
12802 return 0;
12803 nla_put_failure:
12804 return -ENOBUFS;
12805 }
12806
12807 static int nl80211_send_scan_msg(struct sk_buff *msg,
12808 struct cfg80211_registered_device *rdev,
12809 struct wireless_dev *wdev,
12810 u32 portid, u32 seq, int flags,
12811 u32 cmd)
12812 {
12813 void *hdr;
12814
12815 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12816 if (!hdr)
12817 return -1;
12818
12819 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12820 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12821 wdev->netdev->ifindex)) ||
12822 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12823 NL80211_ATTR_PAD))
12824 goto nla_put_failure;
12825
12826 /* ignore errors and send incomplete event anyway */
12827 nl80211_add_scan_req(msg, rdev);
12828
12829 genlmsg_end(msg, hdr);
12830 return 0;
12831
12832 nla_put_failure:
12833 genlmsg_cancel(msg, hdr);
12834 return -EMSGSIZE;
12835 }
12836
12837 static int
12838 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12839 struct cfg80211_registered_device *rdev,
12840 struct net_device *netdev,
12841 u32 portid, u32 seq, int flags, u32 cmd)
12842 {
12843 void *hdr;
12844
12845 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12846 if (!hdr)
12847 return -1;
12848
12849 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12850 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12851 goto nla_put_failure;
12852
12853 genlmsg_end(msg, hdr);
12854 return 0;
12855
12856 nla_put_failure:
12857 genlmsg_cancel(msg, hdr);
12858 return -EMSGSIZE;
12859 }
12860
12861 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12862 struct wireless_dev *wdev)
12863 {
12864 struct sk_buff *msg;
12865
12866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12867 if (!msg)
12868 return;
12869
12870 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12871 NL80211_CMD_TRIGGER_SCAN) < 0) {
12872 nlmsg_free(msg);
12873 return;
12874 }
12875
12876 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12877 NL80211_MCGRP_SCAN, GFP_KERNEL);
12878 }
12879
12880 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12881 struct wireless_dev *wdev, bool aborted)
12882 {
12883 struct sk_buff *msg;
12884
12885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12886 if (!msg)
12887 return NULL;
12888
12889 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12890 aborted ? NL80211_CMD_SCAN_ABORTED :
12891 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12892 nlmsg_free(msg);
12893 return NULL;
12894 }
12895
12896 return msg;
12897 }
12898
12899 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12900 struct sk_buff *msg)
12901 {
12902 if (!msg)
12903 return;
12904
12905 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12906 NL80211_MCGRP_SCAN, GFP_KERNEL);
12907 }
12908
12909 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12910 struct net_device *netdev)
12911 {
12912 struct sk_buff *msg;
12913
12914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12915 if (!msg)
12916 return;
12917
12918 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12919 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12920 nlmsg_free(msg);
12921 return;
12922 }
12923
12924 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12925 NL80211_MCGRP_SCAN, GFP_KERNEL);
12926 }
12927
12928 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12929 struct net_device *netdev, u32 cmd)
12930 {
12931 struct sk_buff *msg;
12932
12933 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12934 if (!msg)
12935 return;
12936
12937 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12938 nlmsg_free(msg);
12939 return;
12940 }
12941
12942 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12943 NL80211_MCGRP_SCAN, GFP_KERNEL);
12944 }
12945
12946 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12947 struct regulatory_request *request)
12948 {
12949 /* Userspace can always count this one always being set */
12950 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12951 goto nla_put_failure;
12952
12953 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12954 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12955 NL80211_REGDOM_TYPE_WORLD))
12956 goto nla_put_failure;
12957 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12958 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12959 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12960 goto nla_put_failure;
12961 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12962 request->intersect) {
12963 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12964 NL80211_REGDOM_TYPE_INTERSECTION))
12965 goto nla_put_failure;
12966 } else {
12967 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12968 NL80211_REGDOM_TYPE_COUNTRY) ||
12969 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12970 request->alpha2))
12971 goto nla_put_failure;
12972 }
12973
12974 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12975 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12976
12977 if (wiphy &&
12978 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12979 goto nla_put_failure;
12980
12981 if (wiphy &&
12982 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12983 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12984 goto nla_put_failure;
12985 }
12986
12987 return true;
12988
12989 nla_put_failure:
12990 return false;
12991 }
12992
12993 /*
12994 * This can happen on global regulatory changes or device specific settings
12995 * based on custom regulatory domains.
12996 */
12997 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
12998 struct regulatory_request *request)
12999 {
13000 struct sk_buff *msg;
13001 void *hdr;
13002
13003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13004 if (!msg)
13005 return;
13006
13007 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13008 if (!hdr) {
13009 nlmsg_free(msg);
13010 return;
13011 }
13012
13013 if (nl80211_reg_change_event_fill(msg, request) == false)
13014 goto nla_put_failure;
13015
13016 genlmsg_end(msg, hdr);
13017
13018 rcu_read_lock();
13019 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13020 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13021 rcu_read_unlock();
13022
13023 return;
13024
13025 nla_put_failure:
13026 genlmsg_cancel(msg, hdr);
13027 nlmsg_free(msg);
13028 }
13029
13030 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13031 struct net_device *netdev,
13032 const u8 *buf, size_t len,
13033 enum nl80211_commands cmd, gfp_t gfp,
13034 int uapsd_queues)
13035 {
13036 struct sk_buff *msg;
13037 void *hdr;
13038
13039 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13040 if (!msg)
13041 return;
13042
13043 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13044 if (!hdr) {
13045 nlmsg_free(msg);
13046 return;
13047 }
13048
13049 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13050 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13051 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13052 goto nla_put_failure;
13053
13054 if (uapsd_queues >= 0) {
13055 struct nlattr *nla_wmm =
13056 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13057 if (!nla_wmm)
13058 goto nla_put_failure;
13059
13060 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13061 uapsd_queues))
13062 goto nla_put_failure;
13063
13064 nla_nest_end(msg, nla_wmm);
13065 }
13066
13067 genlmsg_end(msg, hdr);
13068
13069 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13070 NL80211_MCGRP_MLME, gfp);
13071 return;
13072
13073 nla_put_failure:
13074 genlmsg_cancel(msg, hdr);
13075 nlmsg_free(msg);
13076 }
13077
13078 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13079 struct net_device *netdev, const u8 *buf,
13080 size_t len, gfp_t gfp)
13081 {
13082 nl80211_send_mlme_event(rdev, netdev, buf, len,
13083 NL80211_CMD_AUTHENTICATE, gfp, -1);
13084 }
13085
13086 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13087 struct net_device *netdev, const u8 *buf,
13088 size_t len, gfp_t gfp, int uapsd_queues)
13089 {
13090 nl80211_send_mlme_event(rdev, netdev, buf, len,
13091 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13092 }
13093
13094 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13095 struct net_device *netdev, const u8 *buf,
13096 size_t len, gfp_t gfp)
13097 {
13098 nl80211_send_mlme_event(rdev, netdev, buf, len,
13099 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13100 }
13101
13102 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13103 struct net_device *netdev, const u8 *buf,
13104 size_t len, gfp_t gfp)
13105 {
13106 nl80211_send_mlme_event(rdev, netdev, buf, len,
13107 NL80211_CMD_DISASSOCIATE, gfp, -1);
13108 }
13109
13110 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13111 size_t len)
13112 {
13113 struct wireless_dev *wdev = dev->ieee80211_ptr;
13114 struct wiphy *wiphy = wdev->wiphy;
13115 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13116 const struct ieee80211_mgmt *mgmt = (void *)buf;
13117 u32 cmd;
13118
13119 if (WARN_ON(len < 2))
13120 return;
13121
13122 if (ieee80211_is_deauth(mgmt->frame_control))
13123 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13124 else
13125 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13126
13127 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13128 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13129 }
13130 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13131
13132 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13133 struct net_device *netdev, int cmd,
13134 const u8 *addr, gfp_t gfp)
13135 {
13136 struct sk_buff *msg;
13137 void *hdr;
13138
13139 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13140 if (!msg)
13141 return;
13142
13143 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13144 if (!hdr) {
13145 nlmsg_free(msg);
13146 return;
13147 }
13148
13149 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13150 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13151 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13152 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13153 goto nla_put_failure;
13154
13155 genlmsg_end(msg, hdr);
13156
13157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13158 NL80211_MCGRP_MLME, gfp);
13159 return;
13160
13161 nla_put_failure:
13162 genlmsg_cancel(msg, hdr);
13163 nlmsg_free(msg);
13164 }
13165
13166 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13167 struct net_device *netdev, const u8 *addr,
13168 gfp_t gfp)
13169 {
13170 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13171 addr, gfp);
13172 }
13173
13174 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13175 struct net_device *netdev, const u8 *addr,
13176 gfp_t gfp)
13177 {
13178 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13179 addr, gfp);
13180 }
13181
13182 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13183 struct net_device *netdev, const u8 *bssid,
13184 const u8 *req_ie, size_t req_ie_len,
13185 const u8 *resp_ie, size_t resp_ie_len,
13186 int status, gfp_t gfp)
13187 {
13188 struct sk_buff *msg;
13189 void *hdr;
13190
13191 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13192 if (!msg)
13193 return;
13194
13195 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13196 if (!hdr) {
13197 nlmsg_free(msg);
13198 return;
13199 }
13200
13201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13202 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13203 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13204 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13205 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13206 status) ||
13207 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13208 (req_ie &&
13209 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13210 (resp_ie &&
13211 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13212 goto nla_put_failure;
13213
13214 genlmsg_end(msg, hdr);
13215
13216 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13217 NL80211_MCGRP_MLME, gfp);
13218 return;
13219
13220 nla_put_failure:
13221 genlmsg_cancel(msg, hdr);
13222 nlmsg_free(msg);
13223 }
13224
13225 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13226 struct net_device *netdev, const u8 *bssid,
13227 const u8 *req_ie, size_t req_ie_len,
13228 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13229 {
13230 struct sk_buff *msg;
13231 void *hdr;
13232
13233 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13234 if (!msg)
13235 return;
13236
13237 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13238 if (!hdr) {
13239 nlmsg_free(msg);
13240 return;
13241 }
13242
13243 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13244 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13245 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13246 (req_ie &&
13247 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13248 (resp_ie &&
13249 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13250 goto nla_put_failure;
13251
13252 genlmsg_end(msg, hdr);
13253
13254 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13255 NL80211_MCGRP_MLME, gfp);
13256 return;
13257
13258 nla_put_failure:
13259 genlmsg_cancel(msg, hdr);
13260 nlmsg_free(msg);
13261 }
13262
13263 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13264 struct net_device *netdev, u16 reason,
13265 const u8 *ie, size_t ie_len, bool from_ap)
13266 {
13267 struct sk_buff *msg;
13268 void *hdr;
13269
13270 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13271 if (!msg)
13272 return;
13273
13274 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13275 if (!hdr) {
13276 nlmsg_free(msg);
13277 return;
13278 }
13279
13280 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13281 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13282 (from_ap && reason &&
13283 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13284 (from_ap &&
13285 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13286 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13287 goto nla_put_failure;
13288
13289 genlmsg_end(msg, hdr);
13290
13291 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13292 NL80211_MCGRP_MLME, GFP_KERNEL);
13293 return;
13294
13295 nla_put_failure:
13296 genlmsg_cancel(msg, hdr);
13297 nlmsg_free(msg);
13298 }
13299
13300 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13301 struct net_device *netdev, const u8 *bssid,
13302 gfp_t gfp)
13303 {
13304 struct sk_buff *msg;
13305 void *hdr;
13306
13307 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13308 if (!msg)
13309 return;
13310
13311 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13312 if (!hdr) {
13313 nlmsg_free(msg);
13314 return;
13315 }
13316
13317 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13318 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13319 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13320 goto nla_put_failure;
13321
13322 genlmsg_end(msg, hdr);
13323
13324 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13325 NL80211_MCGRP_MLME, gfp);
13326 return;
13327
13328 nla_put_failure:
13329 genlmsg_cancel(msg, hdr);
13330 nlmsg_free(msg);
13331 }
13332
13333 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13334 const u8* ie, u8 ie_len, gfp_t gfp)
13335 {
13336 struct wireless_dev *wdev = dev->ieee80211_ptr;
13337 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13338 struct sk_buff *msg;
13339 void *hdr;
13340
13341 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13342 return;
13343
13344 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13345
13346 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13347 if (!msg)
13348 return;
13349
13350 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13351 if (!hdr) {
13352 nlmsg_free(msg);
13353 return;
13354 }
13355
13356 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13357 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13358 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13359 (ie_len && ie &&
13360 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13361 goto nla_put_failure;
13362
13363 genlmsg_end(msg, hdr);
13364
13365 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13366 NL80211_MCGRP_MLME, gfp);
13367 return;
13368
13369 nla_put_failure:
13370 genlmsg_cancel(msg, hdr);
13371 nlmsg_free(msg);
13372 }
13373 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13374
13375 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13376 struct net_device *netdev, const u8 *addr,
13377 enum nl80211_key_type key_type, int key_id,
13378 const u8 *tsc, gfp_t gfp)
13379 {
13380 struct sk_buff *msg;
13381 void *hdr;
13382
13383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13384 if (!msg)
13385 return;
13386
13387 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13388 if (!hdr) {
13389 nlmsg_free(msg);
13390 return;
13391 }
13392
13393 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13394 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13395 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13396 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13397 (key_id != -1 &&
13398 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13399 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13400 goto nla_put_failure;
13401
13402 genlmsg_end(msg, hdr);
13403
13404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13405 NL80211_MCGRP_MLME, gfp);
13406 return;
13407
13408 nla_put_failure:
13409 genlmsg_cancel(msg, hdr);
13410 nlmsg_free(msg);
13411 }
13412
13413 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13414 struct ieee80211_channel *channel_before,
13415 struct ieee80211_channel *channel_after)
13416 {
13417 struct sk_buff *msg;
13418 void *hdr;
13419 struct nlattr *nl_freq;
13420
13421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13422 if (!msg)
13423 return;
13424
13425 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13426 if (!hdr) {
13427 nlmsg_free(msg);
13428 return;
13429 }
13430
13431 /*
13432 * Since we are applying the beacon hint to a wiphy we know its
13433 * wiphy_idx is valid
13434 */
13435 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13436 goto nla_put_failure;
13437
13438 /* Before */
13439 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13440 if (!nl_freq)
13441 goto nla_put_failure;
13442 if (nl80211_msg_put_channel(msg, channel_before, false))
13443 goto nla_put_failure;
13444 nla_nest_end(msg, nl_freq);
13445
13446 /* After */
13447 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13448 if (!nl_freq)
13449 goto nla_put_failure;
13450 if (nl80211_msg_put_channel(msg, channel_after, false))
13451 goto nla_put_failure;
13452 nla_nest_end(msg, nl_freq);
13453
13454 genlmsg_end(msg, hdr);
13455
13456 rcu_read_lock();
13457 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13458 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13459 rcu_read_unlock();
13460
13461 return;
13462
13463 nla_put_failure:
13464 genlmsg_cancel(msg, hdr);
13465 nlmsg_free(msg);
13466 }
13467
13468 static void nl80211_send_remain_on_chan_event(
13469 int cmd, struct cfg80211_registered_device *rdev,
13470 struct wireless_dev *wdev, u64 cookie,
13471 struct ieee80211_channel *chan,
13472 unsigned int duration, gfp_t gfp)
13473 {
13474 struct sk_buff *msg;
13475 void *hdr;
13476
13477 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13478 if (!msg)
13479 return;
13480
13481 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13482 if (!hdr) {
13483 nlmsg_free(msg);
13484 return;
13485 }
13486
13487 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13488 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13489 wdev->netdev->ifindex)) ||
13490 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13491 NL80211_ATTR_PAD) ||
13492 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13493 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13494 NL80211_CHAN_NO_HT) ||
13495 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13496 NL80211_ATTR_PAD))
13497 goto nla_put_failure;
13498
13499 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13500 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13501 goto nla_put_failure;
13502
13503 genlmsg_end(msg, hdr);
13504
13505 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13506 NL80211_MCGRP_MLME, gfp);
13507 return;
13508
13509 nla_put_failure:
13510 genlmsg_cancel(msg, hdr);
13511 nlmsg_free(msg);
13512 }
13513
13514 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13515 struct ieee80211_channel *chan,
13516 unsigned int duration, gfp_t gfp)
13517 {
13518 struct wiphy *wiphy = wdev->wiphy;
13519 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13520
13521 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13522 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13523 rdev, wdev, cookie, chan,
13524 duration, gfp);
13525 }
13526 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13527
13528 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13529 struct ieee80211_channel *chan,
13530 gfp_t gfp)
13531 {
13532 struct wiphy *wiphy = wdev->wiphy;
13533 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13534
13535 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13536 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13537 rdev, wdev, cookie, chan, 0, gfp);
13538 }
13539 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13540
13541 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13542 struct station_info *sinfo, gfp_t gfp)
13543 {
13544 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13545 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13546 struct sk_buff *msg;
13547
13548 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13549
13550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13551 if (!msg)
13552 return;
13553
13554 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13555 rdev, dev, mac_addr, sinfo) < 0) {
13556 nlmsg_free(msg);
13557 return;
13558 }
13559
13560 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13561 NL80211_MCGRP_MLME, gfp);
13562 }
13563 EXPORT_SYMBOL(cfg80211_new_sta);
13564
13565 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13566 struct station_info *sinfo, gfp_t gfp)
13567 {
13568 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13569 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13570 struct sk_buff *msg;
13571 struct station_info empty_sinfo = {};
13572
13573 if (!sinfo)
13574 sinfo = &empty_sinfo;
13575
13576 trace_cfg80211_del_sta(dev, mac_addr);
13577
13578 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13579 if (!msg)
13580 return;
13581
13582 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13583 rdev, dev, mac_addr, sinfo) < 0) {
13584 nlmsg_free(msg);
13585 return;
13586 }
13587
13588 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13589 NL80211_MCGRP_MLME, gfp);
13590 }
13591 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13592
13593 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13594 enum nl80211_connect_failed_reason reason,
13595 gfp_t gfp)
13596 {
13597 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13598 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13599 struct sk_buff *msg;
13600 void *hdr;
13601
13602 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13603 if (!msg)
13604 return;
13605
13606 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13607 if (!hdr) {
13608 nlmsg_free(msg);
13609 return;
13610 }
13611
13612 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13613 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13614 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13615 goto nla_put_failure;
13616
13617 genlmsg_end(msg, hdr);
13618
13619 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13620 NL80211_MCGRP_MLME, gfp);
13621 return;
13622
13623 nla_put_failure:
13624 genlmsg_cancel(msg, hdr);
13625 nlmsg_free(msg);
13626 }
13627 EXPORT_SYMBOL(cfg80211_conn_failed);
13628
13629 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13630 const u8 *addr, gfp_t gfp)
13631 {
13632 struct wireless_dev *wdev = dev->ieee80211_ptr;
13633 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13634 struct sk_buff *msg;
13635 void *hdr;
13636 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13637
13638 if (!nlportid)
13639 return false;
13640
13641 msg = nlmsg_new(100, gfp);
13642 if (!msg)
13643 return true;
13644
13645 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13646 if (!hdr) {
13647 nlmsg_free(msg);
13648 return true;
13649 }
13650
13651 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13652 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13653 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13654 goto nla_put_failure;
13655
13656 genlmsg_end(msg, hdr);
13657 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13658 return true;
13659
13660 nla_put_failure:
13661 genlmsg_cancel(msg, hdr);
13662 nlmsg_free(msg);
13663 return true;
13664 }
13665
13666 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13667 const u8 *addr, gfp_t gfp)
13668 {
13669 struct wireless_dev *wdev = dev->ieee80211_ptr;
13670 bool ret;
13671
13672 trace_cfg80211_rx_spurious_frame(dev, addr);
13673
13674 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13675 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13676 trace_cfg80211_return_bool(false);
13677 return false;
13678 }
13679 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13680 addr, gfp);
13681 trace_cfg80211_return_bool(ret);
13682 return ret;
13683 }
13684 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13685
13686 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13687 const u8 *addr, gfp_t gfp)
13688 {
13689 struct wireless_dev *wdev = dev->ieee80211_ptr;
13690 bool ret;
13691
13692 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13693
13694 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13695 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13696 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13697 trace_cfg80211_return_bool(false);
13698 return false;
13699 }
13700 ret = __nl80211_unexpected_frame(dev,
13701 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13702 addr, gfp);
13703 trace_cfg80211_return_bool(ret);
13704 return ret;
13705 }
13706 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13707
13708 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13709 struct wireless_dev *wdev, u32 nlportid,
13710 int freq, int sig_dbm,
13711 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13712 {
13713 struct net_device *netdev = wdev->netdev;
13714 struct sk_buff *msg;
13715 void *hdr;
13716
13717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13718 if (!msg)
13719 return -ENOMEM;
13720
13721 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13722 if (!hdr) {
13723 nlmsg_free(msg);
13724 return -ENOMEM;
13725 }
13726
13727 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13728 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13729 netdev->ifindex)) ||
13730 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13731 NL80211_ATTR_PAD) ||
13732 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13733 (sig_dbm &&
13734 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13735 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13736 (flags &&
13737 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13738 goto nla_put_failure;
13739
13740 genlmsg_end(msg, hdr);
13741
13742 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13743
13744 nla_put_failure:
13745 genlmsg_cancel(msg, hdr);
13746 nlmsg_free(msg);
13747 return -ENOBUFS;
13748 }
13749
13750 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13751 const u8 *buf, size_t len, bool ack, gfp_t gfp)
13752 {
13753 struct wiphy *wiphy = wdev->wiphy;
13754 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13755 struct net_device *netdev = wdev->netdev;
13756 struct sk_buff *msg;
13757 void *hdr;
13758
13759 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13760
13761 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13762 if (!msg)
13763 return;
13764
13765 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13766 if (!hdr) {
13767 nlmsg_free(msg);
13768 return;
13769 }
13770
13771 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13772 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13773 netdev->ifindex)) ||
13774 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13775 NL80211_ATTR_PAD) ||
13776 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13777 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13778 NL80211_ATTR_PAD) ||
13779 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13780 goto nla_put_failure;
13781
13782 genlmsg_end(msg, hdr);
13783
13784 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13785 NL80211_MCGRP_MLME, gfp);
13786 return;
13787
13788 nla_put_failure:
13789 genlmsg_cancel(msg, hdr);
13790 nlmsg_free(msg);
13791 }
13792 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13793
13794 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13795 const char *mac, gfp_t gfp)
13796 {
13797 struct wireless_dev *wdev = dev->ieee80211_ptr;
13798 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13799 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13800 void **cb;
13801
13802 if (!msg)
13803 return NULL;
13804
13805 cb = (void **)msg->cb;
13806
13807 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13808 if (!cb[0]) {
13809 nlmsg_free(msg);
13810 return NULL;
13811 }
13812
13813 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13814 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13815 goto nla_put_failure;
13816
13817 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13818 goto nla_put_failure;
13819
13820 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13821 if (!cb[1])
13822 goto nla_put_failure;
13823
13824 cb[2] = rdev;
13825
13826 return msg;
13827 nla_put_failure:
13828 nlmsg_free(msg);
13829 return NULL;
13830 }
13831
13832 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13833 {
13834 void **cb = (void **)msg->cb;
13835 struct cfg80211_registered_device *rdev = cb[2];
13836
13837 nla_nest_end(msg, cb[1]);
13838 genlmsg_end(msg, cb[0]);
13839
13840 memset(msg->cb, 0, sizeof(msg->cb));
13841
13842 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13843 NL80211_MCGRP_MLME, gfp);
13844 }
13845
13846 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13847 enum nl80211_cqm_rssi_threshold_event rssi_event,
13848 gfp_t gfp)
13849 {
13850 struct sk_buff *msg;
13851
13852 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13853
13854 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13855 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13856 return;
13857
13858 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13859 if (!msg)
13860 return;
13861
13862 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13863 rssi_event))
13864 goto nla_put_failure;
13865
13866 cfg80211_send_cqm(msg, gfp);
13867
13868 return;
13869
13870 nla_put_failure:
13871 nlmsg_free(msg);
13872 }
13873 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13874
13875 void cfg80211_cqm_txe_notify(struct net_device *dev,
13876 const u8 *peer, u32 num_packets,
13877 u32 rate, u32 intvl, gfp_t gfp)
13878 {
13879 struct sk_buff *msg;
13880
13881 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13882 if (!msg)
13883 return;
13884
13885 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13886 goto nla_put_failure;
13887
13888 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13889 goto nla_put_failure;
13890
13891 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13892 goto nla_put_failure;
13893
13894 cfg80211_send_cqm(msg, gfp);
13895 return;
13896
13897 nla_put_failure:
13898 nlmsg_free(msg);
13899 }
13900 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13901
13902 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13903 const u8 *peer, u32 num_packets, gfp_t gfp)
13904 {
13905 struct sk_buff *msg;
13906
13907 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13908
13909 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13910 if (!msg)
13911 return;
13912
13913 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13914 goto nla_put_failure;
13915
13916 cfg80211_send_cqm(msg, gfp);
13917 return;
13918
13919 nla_put_failure:
13920 nlmsg_free(msg);
13921 }
13922 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13923
13924 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13925 {
13926 struct sk_buff *msg;
13927
13928 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13929 if (!msg)
13930 return;
13931
13932 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13933 goto nla_put_failure;
13934
13935 cfg80211_send_cqm(msg, gfp);
13936 return;
13937
13938 nla_put_failure:
13939 nlmsg_free(msg);
13940 }
13941 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13942
13943 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13944 struct net_device *netdev, const u8 *bssid,
13945 const u8 *replay_ctr, gfp_t gfp)
13946 {
13947 struct sk_buff *msg;
13948 struct nlattr *rekey_attr;
13949 void *hdr;
13950
13951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13952 if (!msg)
13953 return;
13954
13955 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13956 if (!hdr) {
13957 nlmsg_free(msg);
13958 return;
13959 }
13960
13961 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13962 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13963 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13964 goto nla_put_failure;
13965
13966 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13967 if (!rekey_attr)
13968 goto nla_put_failure;
13969
13970 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13971 NL80211_REPLAY_CTR_LEN, replay_ctr))
13972 goto nla_put_failure;
13973
13974 nla_nest_end(msg, rekey_attr);
13975
13976 genlmsg_end(msg, hdr);
13977
13978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13979 NL80211_MCGRP_MLME, gfp);
13980 return;
13981
13982 nla_put_failure:
13983 genlmsg_cancel(msg, hdr);
13984 nlmsg_free(msg);
13985 }
13986
13987 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13988 const u8 *replay_ctr, gfp_t gfp)
13989 {
13990 struct wireless_dev *wdev = dev->ieee80211_ptr;
13991 struct wiphy *wiphy = wdev->wiphy;
13992 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13993
13994 trace_cfg80211_gtk_rekey_notify(dev, bssid);
13995 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
13996 }
13997 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
13998
13999 static void
14000 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14001 struct net_device *netdev, int index,
14002 const u8 *bssid, bool preauth, gfp_t gfp)
14003 {
14004 struct sk_buff *msg;
14005 struct nlattr *attr;
14006 void *hdr;
14007
14008 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14009 if (!msg)
14010 return;
14011
14012 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14013 if (!hdr) {
14014 nlmsg_free(msg);
14015 return;
14016 }
14017
14018 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14019 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14020 goto nla_put_failure;
14021
14022 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14023 if (!attr)
14024 goto nla_put_failure;
14025
14026 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14027 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14028 (preauth &&
14029 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14030 goto nla_put_failure;
14031
14032 nla_nest_end(msg, attr);
14033
14034 genlmsg_end(msg, hdr);
14035
14036 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14037 NL80211_MCGRP_MLME, gfp);
14038 return;
14039
14040 nla_put_failure:
14041 genlmsg_cancel(msg, hdr);
14042 nlmsg_free(msg);
14043 }
14044
14045 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14046 const u8 *bssid, bool preauth, gfp_t gfp)
14047 {
14048 struct wireless_dev *wdev = dev->ieee80211_ptr;
14049 struct wiphy *wiphy = wdev->wiphy;
14050 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14051
14052 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14053 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14054 }
14055 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14056
14057 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14058 struct net_device *netdev,
14059 struct cfg80211_chan_def *chandef,
14060 gfp_t gfp,
14061 enum nl80211_commands notif,
14062 u8 count)
14063 {
14064 struct sk_buff *msg;
14065 void *hdr;
14066
14067 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14068 if (!msg)
14069 return;
14070
14071 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14072 if (!hdr) {
14073 nlmsg_free(msg);
14074 return;
14075 }
14076
14077 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14078 goto nla_put_failure;
14079
14080 if (nl80211_send_chandef(msg, chandef))
14081 goto nla_put_failure;
14082
14083 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14084 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14085 goto nla_put_failure;
14086
14087 genlmsg_end(msg, hdr);
14088
14089 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14090 NL80211_MCGRP_MLME, gfp);
14091 return;
14092
14093 nla_put_failure:
14094 genlmsg_cancel(msg, hdr);
14095 nlmsg_free(msg);
14096 }
14097
14098 void cfg80211_ch_switch_notify(struct net_device *dev,
14099 struct cfg80211_chan_def *chandef)
14100 {
14101 struct wireless_dev *wdev = dev->ieee80211_ptr;
14102 struct wiphy *wiphy = wdev->wiphy;
14103 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14104
14105 ASSERT_WDEV_LOCK(wdev);
14106
14107 trace_cfg80211_ch_switch_notify(dev, chandef);
14108
14109 wdev->chandef = *chandef;
14110 wdev->preset_chandef = *chandef;
14111 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14112 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14113 }
14114 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14115
14116 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14117 struct cfg80211_chan_def *chandef,
14118 u8 count)
14119 {
14120 struct wireless_dev *wdev = dev->ieee80211_ptr;
14121 struct wiphy *wiphy = wdev->wiphy;
14122 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14123
14124 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14125
14126 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14127 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14128 }
14129 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14130
14131 void
14132 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14133 const struct cfg80211_chan_def *chandef,
14134 enum nl80211_radar_event event,
14135 struct net_device *netdev, gfp_t gfp)
14136 {
14137 struct sk_buff *msg;
14138 void *hdr;
14139
14140 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14141 if (!msg)
14142 return;
14143
14144 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14145 if (!hdr) {
14146 nlmsg_free(msg);
14147 return;
14148 }
14149
14150 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14151 goto nla_put_failure;
14152
14153 /* NOP and radar events don't need a netdev parameter */
14154 if (netdev) {
14155 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14156
14157 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14158 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14159 NL80211_ATTR_PAD))
14160 goto nla_put_failure;
14161 }
14162
14163 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14164 goto nla_put_failure;
14165
14166 if (nl80211_send_chandef(msg, chandef))
14167 goto nla_put_failure;
14168
14169 genlmsg_end(msg, hdr);
14170
14171 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14172 NL80211_MCGRP_MLME, gfp);
14173 return;
14174
14175 nla_put_failure:
14176 genlmsg_cancel(msg, hdr);
14177 nlmsg_free(msg);
14178 }
14179
14180 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14181 u64 cookie, bool acked, gfp_t gfp)
14182 {
14183 struct wireless_dev *wdev = dev->ieee80211_ptr;
14184 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14185 struct sk_buff *msg;
14186 void *hdr;
14187
14188 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14189
14190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14191
14192 if (!msg)
14193 return;
14194
14195 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14196 if (!hdr) {
14197 nlmsg_free(msg);
14198 return;
14199 }
14200
14201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14202 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14203 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14204 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14205 NL80211_ATTR_PAD) ||
14206 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14207 goto nla_put_failure;
14208
14209 genlmsg_end(msg, hdr);
14210
14211 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14212 NL80211_MCGRP_MLME, gfp);
14213 return;
14214
14215 nla_put_failure:
14216 genlmsg_cancel(msg, hdr);
14217 nlmsg_free(msg);
14218 }
14219 EXPORT_SYMBOL(cfg80211_probe_status);
14220
14221 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14222 const u8 *frame, size_t len,
14223 int freq, int sig_dbm)
14224 {
14225 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14226 struct sk_buff *msg;
14227 void *hdr;
14228 struct cfg80211_beacon_registration *reg;
14229
14230 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14231
14232 spin_lock_bh(&rdev->beacon_registrations_lock);
14233 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14234 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14235 if (!msg) {
14236 spin_unlock_bh(&rdev->beacon_registrations_lock);
14237 return;
14238 }
14239
14240 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14241 if (!hdr)
14242 goto nla_put_failure;
14243
14244 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14245 (freq &&
14246 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14247 (sig_dbm &&
14248 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14249 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14250 goto nla_put_failure;
14251
14252 genlmsg_end(msg, hdr);
14253
14254 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14255 }
14256 spin_unlock_bh(&rdev->beacon_registrations_lock);
14257 return;
14258
14259 nla_put_failure:
14260 spin_unlock_bh(&rdev->beacon_registrations_lock);
14261 if (hdr)
14262 genlmsg_cancel(msg, hdr);
14263 nlmsg_free(msg);
14264 }
14265 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14266
14267 #ifdef CONFIG_PM
14268 static int cfg80211_net_detect_results(struct sk_buff *msg,
14269 struct cfg80211_wowlan_wakeup *wakeup)
14270 {
14271 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14272 struct nlattr *nl_results, *nl_match, *nl_freqs;
14273 int i, j;
14274
14275 nl_results = nla_nest_start(
14276 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14277 if (!nl_results)
14278 return -EMSGSIZE;
14279
14280 for (i = 0; i < nd->n_matches; i++) {
14281 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14282
14283 nl_match = nla_nest_start(msg, i);
14284 if (!nl_match)
14285 break;
14286
14287 /* The SSID attribute is optional in nl80211, but for
14288 * simplicity reasons it's always present in the
14289 * cfg80211 structure. If a driver can't pass the
14290 * SSID, that needs to be changed. A zero length SSID
14291 * is still a valid SSID (wildcard), so it cannot be
14292 * used for this purpose.
14293 */
14294 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14295 match->ssid.ssid)) {
14296 nla_nest_cancel(msg, nl_match);
14297 goto out;
14298 }
14299
14300 if (match->n_channels) {
14301 nl_freqs = nla_nest_start(
14302 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14303 if (!nl_freqs) {
14304 nla_nest_cancel(msg, nl_match);
14305 goto out;
14306 }
14307
14308 for (j = 0; j < match->n_channels; j++) {
14309 if (nla_put_u32(msg, j, match->channels[j])) {
14310 nla_nest_cancel(msg, nl_freqs);
14311 nla_nest_cancel(msg, nl_match);
14312 goto out;
14313 }
14314 }
14315
14316 nla_nest_end(msg, nl_freqs);
14317 }
14318
14319 nla_nest_end(msg, nl_match);
14320 }
14321
14322 out:
14323 nla_nest_end(msg, nl_results);
14324 return 0;
14325 }
14326
14327 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14328 struct cfg80211_wowlan_wakeup *wakeup,
14329 gfp_t gfp)
14330 {
14331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14332 struct sk_buff *msg;
14333 void *hdr;
14334 int size = 200;
14335
14336 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14337
14338 if (wakeup)
14339 size += wakeup->packet_present_len;
14340
14341 msg = nlmsg_new(size, gfp);
14342 if (!msg)
14343 return;
14344
14345 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14346 if (!hdr)
14347 goto free_msg;
14348
14349 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14350 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14351 NL80211_ATTR_PAD))
14352 goto free_msg;
14353
14354 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14355 wdev->netdev->ifindex))
14356 goto free_msg;
14357
14358 if (wakeup) {
14359 struct nlattr *reasons;
14360
14361 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14362 if (!reasons)
14363 goto free_msg;
14364
14365 if (wakeup->disconnect &&
14366 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14367 goto free_msg;
14368 if (wakeup->magic_pkt &&
14369 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14370 goto free_msg;
14371 if (wakeup->gtk_rekey_failure &&
14372 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14373 goto free_msg;
14374 if (wakeup->eap_identity_req &&
14375 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14376 goto free_msg;
14377 if (wakeup->four_way_handshake &&
14378 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14379 goto free_msg;
14380 if (wakeup->rfkill_release &&
14381 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14382 goto free_msg;
14383
14384 if (wakeup->pattern_idx >= 0 &&
14385 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14386 wakeup->pattern_idx))
14387 goto free_msg;
14388
14389 if (wakeup->tcp_match &&
14390 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14391 goto free_msg;
14392
14393 if (wakeup->tcp_connlost &&
14394 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14395 goto free_msg;
14396
14397 if (wakeup->tcp_nomoretokens &&
14398 nla_put_flag(msg,
14399 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14400 goto free_msg;
14401
14402 if (wakeup->packet) {
14403 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14404 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14405
14406 if (!wakeup->packet_80211) {
14407 pkt_attr =
14408 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14409 len_attr =
14410 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14411 }
14412
14413 if (wakeup->packet_len &&
14414 nla_put_u32(msg, len_attr, wakeup->packet_len))
14415 goto free_msg;
14416
14417 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14418 wakeup->packet))
14419 goto free_msg;
14420 }
14421
14422 if (wakeup->net_detect &&
14423 cfg80211_net_detect_results(msg, wakeup))
14424 goto free_msg;
14425
14426 nla_nest_end(msg, reasons);
14427 }
14428
14429 genlmsg_end(msg, hdr);
14430
14431 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14432 NL80211_MCGRP_MLME, gfp);
14433 return;
14434
14435 free_msg:
14436 nlmsg_free(msg);
14437 }
14438 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14439 #endif
14440
14441 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14442 enum nl80211_tdls_operation oper,
14443 u16 reason_code, gfp_t gfp)
14444 {
14445 struct wireless_dev *wdev = dev->ieee80211_ptr;
14446 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14447 struct sk_buff *msg;
14448 void *hdr;
14449
14450 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14451 reason_code);
14452
14453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14454 if (!msg)
14455 return;
14456
14457 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14458 if (!hdr) {
14459 nlmsg_free(msg);
14460 return;
14461 }
14462
14463 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14464 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14465 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14466 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14467 (reason_code > 0 &&
14468 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14469 goto nla_put_failure;
14470
14471 genlmsg_end(msg, hdr);
14472
14473 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14474 NL80211_MCGRP_MLME, gfp);
14475 return;
14476
14477 nla_put_failure:
14478 genlmsg_cancel(msg, hdr);
14479 nlmsg_free(msg);
14480 }
14481 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14482
14483 static int nl80211_netlink_notify(struct notifier_block * nb,
14484 unsigned long state,
14485 void *_notify)
14486 {
14487 struct netlink_notify *notify = _notify;
14488 struct cfg80211_registered_device *rdev;
14489 struct wireless_dev *wdev;
14490 struct cfg80211_beacon_registration *reg, *tmp;
14491
14492 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14493 return NOTIFY_DONE;
14494
14495 rcu_read_lock();
14496
14497 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14498 bool schedule_destroy_work = false;
14499 bool schedule_scan_stop = false;
14500 struct cfg80211_sched_scan_request *sched_scan_req =
14501 rcu_dereference(rdev->sched_scan_req);
14502
14503 if (sched_scan_req && notify->portid &&
14504 sched_scan_req->owner_nlportid == notify->portid)
14505 schedule_scan_stop = true;
14506
14507 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14508 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14509
14510 if (wdev->owner_nlportid == notify->portid)
14511 schedule_destroy_work = true;
14512 }
14513
14514 spin_lock_bh(&rdev->beacon_registrations_lock);
14515 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14516 list) {
14517 if (reg->nlportid == notify->portid) {
14518 list_del(&reg->list);
14519 kfree(reg);
14520 break;
14521 }
14522 }
14523 spin_unlock_bh(&rdev->beacon_registrations_lock);
14524
14525 if (schedule_destroy_work) {
14526 struct cfg80211_iface_destroy *destroy;
14527
14528 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14529 if (destroy) {
14530 destroy->nlportid = notify->portid;
14531 spin_lock(&rdev->destroy_list_lock);
14532 list_add(&destroy->list, &rdev->destroy_list);
14533 spin_unlock(&rdev->destroy_list_lock);
14534 schedule_work(&rdev->destroy_work);
14535 }
14536 } else if (schedule_scan_stop) {
14537 sched_scan_req->owner_nlportid = 0;
14538
14539 if (rdev->ops->sched_scan_stop &&
14540 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14541 schedule_work(&rdev->sched_scan_stop_wk);
14542 }
14543 }
14544
14545 rcu_read_unlock();
14546
14547 /*
14548 * It is possible that the user space process that is controlling the
14549 * indoor setting disappeared, so notify the regulatory core.
14550 */
14551 regulatory_netlink_notify(notify->portid);
14552 return NOTIFY_OK;
14553 }
14554
14555 static struct notifier_block nl80211_netlink_notifier = {
14556 .notifier_call = nl80211_netlink_notify,
14557 };
14558
14559 void cfg80211_ft_event(struct net_device *netdev,
14560 struct cfg80211_ft_event_params *ft_event)
14561 {
14562 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14563 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14564 struct sk_buff *msg;
14565 void *hdr;
14566
14567 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14568
14569 if (!ft_event->target_ap)
14570 return;
14571
14572 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14573 if (!msg)
14574 return;
14575
14576 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14577 if (!hdr)
14578 goto out;
14579
14580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14581 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14582 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14583 goto out;
14584
14585 if (ft_event->ies &&
14586 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14587 goto out;
14588 if (ft_event->ric_ies &&
14589 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14590 ft_event->ric_ies))
14591 goto out;
14592
14593 genlmsg_end(msg, hdr);
14594
14595 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14596 NL80211_MCGRP_MLME, GFP_KERNEL);
14597 return;
14598 out:
14599 nlmsg_free(msg);
14600 }
14601 EXPORT_SYMBOL(cfg80211_ft_event);
14602
14603 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14604 {
14605 struct cfg80211_registered_device *rdev;
14606 struct sk_buff *msg;
14607 void *hdr;
14608 u32 nlportid;
14609
14610 rdev = wiphy_to_rdev(wdev->wiphy);
14611 if (!rdev->crit_proto_nlportid)
14612 return;
14613
14614 nlportid = rdev->crit_proto_nlportid;
14615 rdev->crit_proto_nlportid = 0;
14616
14617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14618 if (!msg)
14619 return;
14620
14621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14622 if (!hdr)
14623 goto nla_put_failure;
14624
14625 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14626 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14627 NL80211_ATTR_PAD))
14628 goto nla_put_failure;
14629
14630 genlmsg_end(msg, hdr);
14631
14632 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14633 return;
14634
14635 nla_put_failure:
14636 if (hdr)
14637 genlmsg_cancel(msg, hdr);
14638 nlmsg_free(msg);
14639 }
14640 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14641
14642 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14643 {
14644 struct wiphy *wiphy = wdev->wiphy;
14645 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14646 struct sk_buff *msg;
14647 void *hdr;
14648
14649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14650 if (!msg)
14651 return;
14652
14653 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14654 if (!hdr)
14655 goto out;
14656
14657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14659 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14660 NL80211_ATTR_PAD))
14661 goto out;
14662
14663 genlmsg_end(msg, hdr);
14664
14665 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14666 NL80211_MCGRP_MLME, GFP_KERNEL);
14667 return;
14668 out:
14669 nlmsg_free(msg);
14670 }
14671
14672 /* initialisation/exit functions */
14673
14674 int __init nl80211_init(void)
14675 {
14676 int err;
14677
14678 err = genl_register_family(&nl80211_fam);
14679 if (err)
14680 return err;
14681
14682 err = netlink_register_notifier(&nl80211_netlink_notifier);
14683 if (err)
14684 goto err_out;
14685
14686 return 0;
14687 err_out:
14688 genl_unregister_family(&nl80211_fam);
14689 return err;
14690 }
14691
14692 void nl80211_exit(void)
14693 {
14694 netlink_unregister_notifier(&nl80211_netlink_notifier);
14695 genl_unregister_family(&nl80211_fam);
14696 }
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