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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-bionic-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 must 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 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6783 return -EINVAL;
6784
6785 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6786 if (!interval)
6787 return -EINVAL;
6788
6789 request->scan_plans[0].interval =
6790 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6791 if (!request->scan_plans[0].interval)
6792 return -EINVAL;
6793
6794 if (request->scan_plans[0].interval >
6795 wiphy->max_sched_scan_plan_interval)
6796 request->scan_plans[0].interval =
6797 wiphy->max_sched_scan_plan_interval;
6798
6799 return 0;
6800 }
6801
6802 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6803 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6804
6805 if (WARN_ON(i >= n_plans))
6806 return -EINVAL;
6807
6808 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6809 attr, nl80211_plan_policy);
6810 if (err)
6811 return err;
6812
6813 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6814 return -EINVAL;
6815
6816 request->scan_plans[i].interval =
6817 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6818 if (!request->scan_plans[i].interval ||
6819 request->scan_plans[i].interval >
6820 wiphy->max_sched_scan_plan_interval)
6821 return -EINVAL;
6822
6823 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6824 request->scan_plans[i].iterations =
6825 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6826 if (!request->scan_plans[i].iterations ||
6827 (request->scan_plans[i].iterations >
6828 wiphy->max_sched_scan_plan_iterations))
6829 return -EINVAL;
6830 } else if (i < n_plans - 1) {
6831 /*
6832 * All scan plans but the last one must specify
6833 * a finite number of iterations
6834 */
6835 return -EINVAL;
6836 }
6837
6838 i++;
6839 }
6840
6841 /*
6842 * The last scan plan must not specify the number of
6843 * iterations, it is supposed to run infinitely
6844 */
6845 if (request->scan_plans[n_plans - 1].iterations)
6846 return -EINVAL;
6847
6848 return 0;
6849 }
6850
6851 static struct cfg80211_sched_scan_request *
6852 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6853 struct nlattr **attrs)
6854 {
6855 struct cfg80211_sched_scan_request *request;
6856 struct nlattr *attr;
6857 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6858 enum nl80211_band band;
6859 size_t ie_len;
6860 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6861 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6862
6863 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6864 return ERR_PTR(-EINVAL);
6865
6866 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6867 n_channels = validate_scan_freqs(
6868 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6869 if (!n_channels)
6870 return ERR_PTR(-EINVAL);
6871 } else {
6872 n_channels = ieee80211_get_num_supported_channels(wiphy);
6873 }
6874
6875 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6876 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6877 tmp)
6878 n_ssids++;
6879
6880 if (n_ssids > wiphy->max_sched_scan_ssids)
6881 return ERR_PTR(-EINVAL);
6882
6883 /*
6884 * First, count the number of 'real' matchsets. Due to an issue with
6885 * the old implementation, matchsets containing only the RSSI attribute
6886 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6887 * RSSI for all matchsets, rather than their own matchset for reporting
6888 * all APs with a strong RSSI. This is needed to be compatible with
6889 * older userspace that treated a matchset with only the RSSI as the
6890 * global RSSI for all other matchsets - if there are other matchsets.
6891 */
6892 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6893 nla_for_each_nested(attr,
6894 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6895 tmp) {
6896 struct nlattr *rssi;
6897
6898 err = nla_parse_nested(tb,
6899 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6900 attr, nl80211_match_policy);
6901 if (err)
6902 return ERR_PTR(err);
6903 /* add other standalone attributes here */
6904 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6905 n_match_sets++;
6906 continue;
6907 }
6908 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6909 if (rssi)
6910 default_match_rssi = nla_get_s32(rssi);
6911 }
6912 }
6913
6914 /* However, if there's no other matchset, add the RSSI one */
6915 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6916 n_match_sets = 1;
6917
6918 if (n_match_sets > wiphy->max_match_sets)
6919 return ERR_PTR(-EINVAL);
6920
6921 if (attrs[NL80211_ATTR_IE])
6922 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6923 else
6924 ie_len = 0;
6925
6926 if (ie_len > wiphy->max_sched_scan_ie_len)
6927 return ERR_PTR(-EINVAL);
6928
6929 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6930 /*
6931 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6932 * each scan plan already specifies its own interval
6933 */
6934 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6935 return ERR_PTR(-EINVAL);
6936
6937 nla_for_each_nested(attr,
6938 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6939 n_plans++;
6940 } else {
6941 /*
6942 * The scan interval attribute is kept for backward
6943 * compatibility. If no scan plans are specified and sched scan
6944 * interval is specified, one scan plan will be set with this
6945 * scan interval and infinite number of iterations.
6946 */
6947 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6948 return ERR_PTR(-EINVAL);
6949
6950 n_plans = 1;
6951 }
6952
6953 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6954 return ERR_PTR(-EINVAL);
6955
6956 request = kzalloc(sizeof(*request)
6957 + sizeof(*request->ssids) * n_ssids
6958 + sizeof(*request->match_sets) * n_match_sets
6959 + sizeof(*request->scan_plans) * n_plans
6960 + sizeof(*request->channels) * n_channels
6961 + ie_len, GFP_KERNEL);
6962 if (!request)
6963 return ERR_PTR(-ENOMEM);
6964
6965 if (n_ssids)
6966 request->ssids = (void *)&request->channels[n_channels];
6967 request->n_ssids = n_ssids;
6968 if (ie_len) {
6969 if (n_ssids)
6970 request->ie = (void *)(request->ssids + n_ssids);
6971 else
6972 request->ie = (void *)(request->channels + n_channels);
6973 }
6974
6975 if (n_match_sets) {
6976 if (request->ie)
6977 request->match_sets = (void *)(request->ie + ie_len);
6978 else if (n_ssids)
6979 request->match_sets =
6980 (void *)(request->ssids + n_ssids);
6981 else
6982 request->match_sets =
6983 (void *)(request->channels + n_channels);
6984 }
6985 request->n_match_sets = n_match_sets;
6986
6987 if (n_match_sets)
6988 request->scan_plans = (void *)(request->match_sets +
6989 n_match_sets);
6990 else if (request->ie)
6991 request->scan_plans = (void *)(request->ie + ie_len);
6992 else if (n_ssids)
6993 request->scan_plans = (void *)(request->ssids + n_ssids);
6994 else
6995 request->scan_plans = (void *)(request->channels + n_channels);
6996
6997 request->n_scan_plans = n_plans;
6998
6999 i = 0;
7000 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7001 /* user specified, bail out if channel not found */
7002 nla_for_each_nested(attr,
7003 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7004 tmp) {
7005 struct ieee80211_channel *chan;
7006
7007 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7008
7009 if (!chan) {
7010 err = -EINVAL;
7011 goto out_free;
7012 }
7013
7014 /* ignore disabled channels */
7015 if (chan->flags & IEEE80211_CHAN_DISABLED)
7016 continue;
7017
7018 request->channels[i] = chan;
7019 i++;
7020 }
7021 } else {
7022 /* all channels */
7023 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7024 int j;
7025
7026 if (!wiphy->bands[band])
7027 continue;
7028 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7029 struct ieee80211_channel *chan;
7030
7031 chan = &wiphy->bands[band]->channels[j];
7032
7033 if (chan->flags & IEEE80211_CHAN_DISABLED)
7034 continue;
7035
7036 request->channels[i] = chan;
7037 i++;
7038 }
7039 }
7040 }
7041
7042 if (!i) {
7043 err = -EINVAL;
7044 goto out_free;
7045 }
7046
7047 request->n_channels = i;
7048
7049 i = 0;
7050 if (n_ssids) {
7051 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7052 tmp) {
7053 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7054 err = -EINVAL;
7055 goto out_free;
7056 }
7057 request->ssids[i].ssid_len = nla_len(attr);
7058 memcpy(request->ssids[i].ssid, nla_data(attr),
7059 nla_len(attr));
7060 i++;
7061 }
7062 }
7063
7064 i = 0;
7065 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7066 nla_for_each_nested(attr,
7067 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7068 tmp) {
7069 struct nlattr *ssid, *rssi;
7070
7071 err = nla_parse_nested(tb,
7072 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7073 attr, nl80211_match_policy);
7074 if (err)
7075 goto out_free;
7076 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7077 if (ssid) {
7078 if (WARN_ON(i >= n_match_sets)) {
7079 /* this indicates a programming error,
7080 * the loop above should have verified
7081 * things properly
7082 */
7083 err = -EINVAL;
7084 goto out_free;
7085 }
7086
7087 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7088 err = -EINVAL;
7089 goto out_free;
7090 }
7091 memcpy(request->match_sets[i].ssid.ssid,
7092 nla_data(ssid), nla_len(ssid));
7093 request->match_sets[i].ssid.ssid_len =
7094 nla_len(ssid);
7095 /* special attribute - old implementation w/a */
7096 request->match_sets[i].rssi_thold =
7097 default_match_rssi;
7098 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7099 if (rssi)
7100 request->match_sets[i].rssi_thold =
7101 nla_get_s32(rssi);
7102 }
7103 i++;
7104 }
7105
7106 /* there was no other matchset, so the RSSI one is alone */
7107 if (i == 0 && n_match_sets)
7108 request->match_sets[0].rssi_thold = default_match_rssi;
7109
7110 request->min_rssi_thold = INT_MAX;
7111 for (i = 0; i < n_match_sets; i++)
7112 request->min_rssi_thold =
7113 min(request->match_sets[i].rssi_thold,
7114 request->min_rssi_thold);
7115 } else {
7116 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7117 }
7118
7119 if (ie_len) {
7120 request->ie_len = ie_len;
7121 memcpy((void *)request->ie,
7122 nla_data(attrs[NL80211_ATTR_IE]),
7123 request->ie_len);
7124 }
7125
7126 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7127 request->flags = nla_get_u32(
7128 attrs[NL80211_ATTR_SCAN_FLAGS]);
7129 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7130 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7131 err = -EOPNOTSUPP;
7132 goto out_free;
7133 }
7134
7135 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7136 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7137
7138 if (!wdev) /* must be net-detect */
7139 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7140
7141 if (!(wiphy->features & flg)) {
7142 err = -EOPNOTSUPP;
7143 goto out_free;
7144 }
7145
7146 if (wdev && wdev->current_bss) {
7147 err = -EOPNOTSUPP;
7148 goto out_free;
7149 }
7150
7151 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7152 request->mac_addr_mask);
7153 if (err)
7154 goto out_free;
7155 }
7156 }
7157
7158 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7159 request->delay =
7160 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7161
7162 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7163 if (err)
7164 goto out_free;
7165
7166 request->scan_start = jiffies;
7167
7168 return request;
7169
7170 out_free:
7171 kfree(request);
7172 return ERR_PTR(err);
7173 }
7174
7175 static int nl80211_start_sched_scan(struct sk_buff *skb,
7176 struct genl_info *info)
7177 {
7178 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7179 struct net_device *dev = info->user_ptr[1];
7180 struct wireless_dev *wdev = dev->ieee80211_ptr;
7181 struct cfg80211_sched_scan_request *sched_scan_req;
7182 int err;
7183
7184 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7185 !rdev->ops->sched_scan_start)
7186 return -EOPNOTSUPP;
7187
7188 if (rdev->sched_scan_req)
7189 return -EINPROGRESS;
7190
7191 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7192 info->attrs);
7193
7194 err = PTR_ERR_OR_ZERO(sched_scan_req);
7195 if (err)
7196 goto out_err;
7197
7198 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7199 if (err)
7200 goto out_free;
7201
7202 sched_scan_req->dev = dev;
7203 sched_scan_req->wiphy = &rdev->wiphy;
7204
7205 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7206 sched_scan_req->owner_nlportid = info->snd_portid;
7207
7208 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7209
7210 nl80211_send_sched_scan(rdev, dev,
7211 NL80211_CMD_START_SCHED_SCAN);
7212 return 0;
7213
7214 out_free:
7215 kfree(sched_scan_req);
7216 out_err:
7217 return err;
7218 }
7219
7220 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7221 struct genl_info *info)
7222 {
7223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7224
7225 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7226 !rdev->ops->sched_scan_stop)
7227 return -EOPNOTSUPP;
7228
7229 return __cfg80211_stop_sched_scan(rdev, false);
7230 }
7231
7232 static int nl80211_start_radar_detection(struct sk_buff *skb,
7233 struct genl_info *info)
7234 {
7235 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7236 struct net_device *dev = info->user_ptr[1];
7237 struct wireless_dev *wdev = dev->ieee80211_ptr;
7238 struct cfg80211_chan_def chandef;
7239 enum nl80211_dfs_regions dfs_region;
7240 unsigned int cac_time_ms;
7241 int err;
7242
7243 dfs_region = reg_get_dfs_region(wdev->wiphy);
7244 if (dfs_region == NL80211_DFS_UNSET)
7245 return -EINVAL;
7246
7247 err = nl80211_parse_chandef(rdev, info, &chandef);
7248 if (err)
7249 return err;
7250
7251 if (netif_carrier_ok(dev))
7252 return -EBUSY;
7253
7254 if (wdev->cac_started)
7255 return -EBUSY;
7256
7257 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7258 wdev->iftype);
7259 if (err < 0)
7260 return err;
7261
7262 if (err == 0)
7263 return -EINVAL;
7264
7265 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7266 return -EINVAL;
7267
7268 if (!rdev->ops->start_radar_detection)
7269 return -EOPNOTSUPP;
7270
7271 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7272 if (WARN_ON(!cac_time_ms))
7273 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7274
7275 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7276 if (!err) {
7277 wdev->chandef = chandef;
7278 wdev->cac_started = true;
7279 wdev->cac_start_time = jiffies;
7280 wdev->cac_time_ms = cac_time_ms;
7281 }
7282 return err;
7283 }
7284
7285 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7286 {
7287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7288 struct net_device *dev = info->user_ptr[1];
7289 struct wireless_dev *wdev = dev->ieee80211_ptr;
7290 struct cfg80211_csa_settings params;
7291 /* csa_attrs is defined static to avoid waste of stack size - this
7292 * function is called under RTNL lock, so this should not be a problem.
7293 */
7294 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7295 int err;
7296 bool need_new_beacon = false;
7297 int len, i;
7298 u32 cs_count;
7299
7300 if (!rdev->ops->channel_switch ||
7301 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7302 return -EOPNOTSUPP;
7303
7304 switch (dev->ieee80211_ptr->iftype) {
7305 case NL80211_IFTYPE_AP:
7306 case NL80211_IFTYPE_P2P_GO:
7307 need_new_beacon = true;
7308
7309 /* useless if AP is not running */
7310 if (!wdev->beacon_interval)
7311 return -ENOTCONN;
7312 break;
7313 case NL80211_IFTYPE_ADHOC:
7314 if (!wdev->ssid_len)
7315 return -ENOTCONN;
7316 break;
7317 case NL80211_IFTYPE_MESH_POINT:
7318 if (!wdev->mesh_id_len)
7319 return -ENOTCONN;
7320 break;
7321 default:
7322 return -EOPNOTSUPP;
7323 }
7324
7325 memset(&params, 0, sizeof(params));
7326
7327 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7328 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7329 return -EINVAL;
7330
7331 /* only important for AP, IBSS and mesh create IEs internally */
7332 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7333 return -EINVAL;
7334
7335 /* Even though the attribute is u32, the specification says
7336 * u8, so let's make sure we don't overflow.
7337 */
7338 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7339 if (cs_count > 255)
7340 return -EINVAL;
7341
7342 params.count = cs_count;
7343
7344 if (!need_new_beacon)
7345 goto skip_beacons;
7346
7347 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7348 if (err)
7349 return err;
7350
7351 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7352 info->attrs[NL80211_ATTR_CSA_IES],
7353 nl80211_policy);
7354 if (err)
7355 return err;
7356
7357 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7358 if (err)
7359 return err;
7360
7361 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7362 return -EINVAL;
7363
7364 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7365 if (!len || (len % sizeof(u16)))
7366 return -EINVAL;
7367
7368 params.n_counter_offsets_beacon = len / sizeof(u16);
7369 if (rdev->wiphy.max_num_csa_counters &&
7370 (params.n_counter_offsets_beacon >
7371 rdev->wiphy.max_num_csa_counters))
7372 return -EINVAL;
7373
7374 params.counter_offsets_beacon =
7375 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7376
7377 /* sanity checks - counters should fit and be the same */
7378 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7379 u16 offset = params.counter_offsets_beacon[i];
7380
7381 if (offset >= params.beacon_csa.tail_len)
7382 return -EINVAL;
7383
7384 if (params.beacon_csa.tail[offset] != params.count)
7385 return -EINVAL;
7386 }
7387
7388 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7389 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7390 if (!len || (len % sizeof(u16)))
7391 return -EINVAL;
7392
7393 params.n_counter_offsets_presp = len / sizeof(u16);
7394 if (rdev->wiphy.max_num_csa_counters &&
7395 (params.n_counter_offsets_presp >
7396 rdev->wiphy.max_num_csa_counters))
7397 return -EINVAL;
7398
7399 params.counter_offsets_presp =
7400 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7401
7402 /* sanity checks - counters should fit and be the same */
7403 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7404 u16 offset = params.counter_offsets_presp[i];
7405
7406 if (offset >= params.beacon_csa.probe_resp_len)
7407 return -EINVAL;
7408
7409 if (params.beacon_csa.probe_resp[offset] !=
7410 params.count)
7411 return -EINVAL;
7412 }
7413 }
7414
7415 skip_beacons:
7416 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7417 if (err)
7418 return err;
7419
7420 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7421 wdev->iftype))
7422 return -EINVAL;
7423
7424 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7425 &params.chandef,
7426 wdev->iftype);
7427 if (err < 0)
7428 return err;
7429
7430 if (err > 0)
7431 params.radar_required = true;
7432
7433 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7434 params.block_tx = true;
7435
7436 wdev_lock(wdev);
7437 err = rdev_channel_switch(rdev, dev, &params);
7438 wdev_unlock(wdev);
7439
7440 return err;
7441 }
7442
7443 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7444 u32 seq, int flags,
7445 struct cfg80211_registered_device *rdev,
7446 struct wireless_dev *wdev,
7447 struct cfg80211_internal_bss *intbss)
7448 {
7449 struct cfg80211_bss *res = &intbss->pub;
7450 const struct cfg80211_bss_ies *ies;
7451 void *hdr;
7452 struct nlattr *bss;
7453
7454 ASSERT_WDEV_LOCK(wdev);
7455
7456 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7457 NL80211_CMD_NEW_SCAN_RESULTS);
7458 if (!hdr)
7459 return -1;
7460
7461 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7462
7463 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7464 goto nla_put_failure;
7465 if (wdev->netdev &&
7466 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7467 goto nla_put_failure;
7468 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7469 NL80211_ATTR_PAD))
7470 goto nla_put_failure;
7471
7472 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7473 if (!bss)
7474 goto nla_put_failure;
7475 if ((!is_zero_ether_addr(res->bssid) &&
7476 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7477 goto nla_put_failure;
7478
7479 rcu_read_lock();
7480 /* indicate whether we have probe response data or not */
7481 if (rcu_access_pointer(res->proberesp_ies) &&
7482 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7483 goto fail_unlock_rcu;
7484
7485 /* this pointer prefers to be pointed to probe response data
7486 * but is always valid
7487 */
7488 ies = rcu_dereference(res->ies);
7489 if (ies) {
7490 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7491 NL80211_BSS_PAD))
7492 goto fail_unlock_rcu;
7493 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7494 ies->len, ies->data))
7495 goto fail_unlock_rcu;
7496 }
7497
7498 /* and this pointer is always (unless driver didn't know) beacon data */
7499 ies = rcu_dereference(res->beacon_ies);
7500 if (ies && ies->from_beacon) {
7501 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7502 NL80211_BSS_PAD))
7503 goto fail_unlock_rcu;
7504 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7505 ies->len, ies->data))
7506 goto fail_unlock_rcu;
7507 }
7508 rcu_read_unlock();
7509
7510 if (res->beacon_interval &&
7511 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7512 goto nla_put_failure;
7513 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7514 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7515 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7516 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7517 jiffies_to_msecs(jiffies - intbss->ts)))
7518 goto nla_put_failure;
7519
7520 if (intbss->parent_tsf &&
7521 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7522 intbss->parent_tsf, NL80211_BSS_PAD) ||
7523 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7524 intbss->parent_bssid)))
7525 goto nla_put_failure;
7526
7527 if (intbss->ts_boottime &&
7528 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7529 intbss->ts_boottime, NL80211_BSS_PAD))
7530 goto nla_put_failure;
7531
7532 switch (rdev->wiphy.signal_type) {
7533 case CFG80211_SIGNAL_TYPE_MBM:
7534 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7535 goto nla_put_failure;
7536 break;
7537 case CFG80211_SIGNAL_TYPE_UNSPEC:
7538 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7539 goto nla_put_failure;
7540 break;
7541 default:
7542 break;
7543 }
7544
7545 switch (wdev->iftype) {
7546 case NL80211_IFTYPE_P2P_CLIENT:
7547 case NL80211_IFTYPE_STATION:
7548 if (intbss == wdev->current_bss &&
7549 nla_put_u32(msg, NL80211_BSS_STATUS,
7550 NL80211_BSS_STATUS_ASSOCIATED))
7551 goto nla_put_failure;
7552 break;
7553 case NL80211_IFTYPE_ADHOC:
7554 if (intbss == wdev->current_bss &&
7555 nla_put_u32(msg, NL80211_BSS_STATUS,
7556 NL80211_BSS_STATUS_IBSS_JOINED))
7557 goto nla_put_failure;
7558 break;
7559 default:
7560 break;
7561 }
7562
7563 nla_nest_end(msg, bss);
7564
7565 genlmsg_end(msg, hdr);
7566 return 0;
7567
7568 fail_unlock_rcu:
7569 rcu_read_unlock();
7570 nla_put_failure:
7571 genlmsg_cancel(msg, hdr);
7572 return -EMSGSIZE;
7573 }
7574
7575 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7576 {
7577 struct cfg80211_registered_device *rdev;
7578 struct cfg80211_internal_bss *scan;
7579 struct wireless_dev *wdev;
7580 int start = cb->args[2], idx = 0;
7581 int err;
7582
7583 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7584 if (err)
7585 return err;
7586
7587 wdev_lock(wdev);
7588 spin_lock_bh(&rdev->bss_lock);
7589 cfg80211_bss_expire(rdev);
7590
7591 cb->seq = rdev->bss_generation;
7592
7593 list_for_each_entry(scan, &rdev->bss_list, list) {
7594 if (++idx <= start)
7595 continue;
7596 if (nl80211_send_bss(skb, cb,
7597 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7598 rdev, wdev, scan) < 0) {
7599 idx--;
7600 break;
7601 }
7602 }
7603
7604 spin_unlock_bh(&rdev->bss_lock);
7605 wdev_unlock(wdev);
7606
7607 cb->args[2] = idx;
7608 nl80211_finish_wdev_dump(rdev);
7609
7610 return skb->len;
7611 }
7612
7613 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7614 int flags, struct net_device *dev,
7615 bool allow_radio_stats,
7616 struct survey_info *survey)
7617 {
7618 void *hdr;
7619 struct nlattr *infoattr;
7620
7621 /* skip radio stats if userspace didn't request them */
7622 if (!survey->channel && !allow_radio_stats)
7623 return 0;
7624
7625 hdr = nl80211hdr_put(msg, portid, seq, flags,
7626 NL80211_CMD_NEW_SURVEY_RESULTS);
7627 if (!hdr)
7628 return -ENOMEM;
7629
7630 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7631 goto nla_put_failure;
7632
7633 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7634 if (!infoattr)
7635 goto nla_put_failure;
7636
7637 if (survey->channel &&
7638 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7639 survey->channel->center_freq))
7640 goto nla_put_failure;
7641
7642 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7643 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7644 goto nla_put_failure;
7645 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7646 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7647 goto nla_put_failure;
7648 if ((survey->filled & SURVEY_INFO_TIME) &&
7649 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7650 survey->time, NL80211_SURVEY_INFO_PAD))
7651 goto nla_put_failure;
7652 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7653 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7654 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7655 goto nla_put_failure;
7656 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7657 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7658 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7659 goto nla_put_failure;
7660 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7661 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7662 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7663 goto nla_put_failure;
7664 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7665 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7666 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7667 goto nla_put_failure;
7668 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7669 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7670 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7671 goto nla_put_failure;
7672
7673 nla_nest_end(msg, infoattr);
7674
7675 genlmsg_end(msg, hdr);
7676 return 0;
7677
7678 nla_put_failure:
7679 genlmsg_cancel(msg, hdr);
7680 return -EMSGSIZE;
7681 }
7682
7683 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7684 {
7685 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7686 struct survey_info survey;
7687 struct cfg80211_registered_device *rdev;
7688 struct wireless_dev *wdev;
7689 int survey_idx = cb->args[2];
7690 int res;
7691 bool radio_stats;
7692
7693 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7694 if (res)
7695 return res;
7696
7697 /* prepare_wdev_dump parsed the attributes */
7698 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7699
7700 if (!wdev->netdev) {
7701 res = -EINVAL;
7702 goto out_err;
7703 }
7704
7705 if (!rdev->ops->dump_survey) {
7706 res = -EOPNOTSUPP;
7707 goto out_err;
7708 }
7709
7710 while (1) {
7711 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7712 if (res == -ENOENT)
7713 break;
7714 if (res)
7715 goto out_err;
7716
7717 /* don't send disabled channels, but do send non-channel data */
7718 if (survey.channel &&
7719 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7720 survey_idx++;
7721 continue;
7722 }
7723
7724 if (nl80211_send_survey(skb,
7725 NETLINK_CB(cb->skb).portid,
7726 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7727 wdev->netdev, radio_stats, &survey) < 0)
7728 goto out;
7729 survey_idx++;
7730 }
7731
7732 out:
7733 cb->args[2] = survey_idx;
7734 res = skb->len;
7735 out_err:
7736 nl80211_finish_wdev_dump(rdev);
7737 return res;
7738 }
7739
7740 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7741 {
7742 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7743 NL80211_WPA_VERSION_2));
7744 }
7745
7746 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7747 {
7748 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7749 struct net_device *dev = info->user_ptr[1];
7750 struct ieee80211_channel *chan;
7751 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7752 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7753 enum nl80211_auth_type auth_type;
7754 struct key_parse key;
7755 bool local_state_change;
7756
7757 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7758 return -EINVAL;
7759
7760 if (!info->attrs[NL80211_ATTR_MAC])
7761 return -EINVAL;
7762
7763 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7764 return -EINVAL;
7765
7766 if (!info->attrs[NL80211_ATTR_SSID])
7767 return -EINVAL;
7768
7769 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7770 return -EINVAL;
7771
7772 err = nl80211_parse_key(info, &key);
7773 if (err)
7774 return err;
7775
7776 if (key.idx >= 0) {
7777 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7778 return -EINVAL;
7779 if (!key.p.key || !key.p.key_len)
7780 return -EINVAL;
7781 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7782 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7783 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7784 key.p.key_len != WLAN_KEY_LEN_WEP104))
7785 return -EINVAL;
7786 if (key.idx > 3)
7787 return -EINVAL;
7788 } else {
7789 key.p.key_len = 0;
7790 key.p.key = NULL;
7791 }
7792
7793 if (key.idx >= 0) {
7794 int i;
7795 bool ok = false;
7796
7797 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7798 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7799 ok = true;
7800 break;
7801 }
7802 }
7803 if (!ok)
7804 return -EINVAL;
7805 }
7806
7807 if (!rdev->ops->auth)
7808 return -EOPNOTSUPP;
7809
7810 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7811 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7812 return -EOPNOTSUPP;
7813
7814 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7815 chan = nl80211_get_valid_chan(&rdev->wiphy,
7816 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7817 if (!chan)
7818 return -EINVAL;
7819
7820 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7821 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7822
7823 if (info->attrs[NL80211_ATTR_IE]) {
7824 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7825 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7826 }
7827
7828 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7829 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7830 return -EINVAL;
7831
7832 if ((auth_type == NL80211_AUTHTYPE_SAE ||
7833 auth_type == NL80211_AUTHTYPE_FILS_SK ||
7834 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7835 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7836 !info->attrs[NL80211_ATTR_AUTH_DATA])
7837 return -EINVAL;
7838
7839 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7840 if (auth_type != NL80211_AUTHTYPE_SAE &&
7841 auth_type != NL80211_AUTHTYPE_FILS_SK &&
7842 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7843 auth_type != NL80211_AUTHTYPE_FILS_PK)
7844 return -EINVAL;
7845 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7846 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7847 /* need to include at least Auth Transaction and Status Code */
7848 if (auth_data_len < 4)
7849 return -EINVAL;
7850 }
7851
7852 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7853
7854 /*
7855 * Since we no longer track auth state, ignore
7856 * requests to only change local state.
7857 */
7858 if (local_state_change)
7859 return 0;
7860
7861 wdev_lock(dev->ieee80211_ptr);
7862 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7863 ssid, ssid_len, ie, ie_len,
7864 key.p.key, key.p.key_len, key.idx,
7865 auth_data, auth_data_len);
7866 wdev_unlock(dev->ieee80211_ptr);
7867 return err;
7868 }
7869
7870 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7871 struct genl_info *info,
7872 struct cfg80211_crypto_settings *settings,
7873 int cipher_limit)
7874 {
7875 memset(settings, 0, sizeof(*settings));
7876
7877 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7878
7879 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7880 u16 proto;
7881
7882 proto = nla_get_u16(
7883 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7884 settings->control_port_ethertype = cpu_to_be16(proto);
7885 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7886 proto != ETH_P_PAE)
7887 return -EINVAL;
7888 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7889 settings->control_port_no_encrypt = true;
7890 } else
7891 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7892
7893 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7894 void *data;
7895 int len, i;
7896
7897 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7898 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7899 settings->n_ciphers_pairwise = len / sizeof(u32);
7900
7901 if (len % sizeof(u32))
7902 return -EINVAL;
7903
7904 if (settings->n_ciphers_pairwise > cipher_limit)
7905 return -EINVAL;
7906
7907 memcpy(settings->ciphers_pairwise, data, len);
7908
7909 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7910 if (!cfg80211_supported_cipher_suite(
7911 &rdev->wiphy,
7912 settings->ciphers_pairwise[i]))
7913 return -EINVAL;
7914 }
7915
7916 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7917 settings->cipher_group =
7918 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7919 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7920 settings->cipher_group))
7921 return -EINVAL;
7922 }
7923
7924 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7925 settings->wpa_versions =
7926 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7927 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7928 return -EINVAL;
7929 }
7930
7931 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7932 void *data;
7933 int len;
7934
7935 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7936 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7937 settings->n_akm_suites = len / sizeof(u32);
7938
7939 if (len % sizeof(u32))
7940 return -EINVAL;
7941
7942 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7943 return -EINVAL;
7944
7945 memcpy(settings->akm_suites, data, len);
7946 }
7947
7948 return 0;
7949 }
7950
7951 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7952 {
7953 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7954 struct net_device *dev = info->user_ptr[1];
7955 struct ieee80211_channel *chan;
7956 struct cfg80211_assoc_request req = {};
7957 const u8 *bssid, *ssid;
7958 int err, ssid_len = 0;
7959
7960 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7961 return -EINVAL;
7962
7963 if (!info->attrs[NL80211_ATTR_MAC] ||
7964 !info->attrs[NL80211_ATTR_SSID] ||
7965 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7966 return -EINVAL;
7967
7968 if (!rdev->ops->assoc)
7969 return -EOPNOTSUPP;
7970
7971 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7972 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7973 return -EOPNOTSUPP;
7974
7975 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7976
7977 chan = nl80211_get_valid_chan(&rdev->wiphy,
7978 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7979 if (!chan)
7980 return -EINVAL;
7981
7982 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7983 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7984
7985 if (info->attrs[NL80211_ATTR_IE]) {
7986 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7987 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7988 }
7989
7990 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7991 enum nl80211_mfp mfp =
7992 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7993 if (mfp == NL80211_MFP_REQUIRED)
7994 req.use_mfp = true;
7995 else if (mfp != NL80211_MFP_NO)
7996 return -EINVAL;
7997 }
7998
7999 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8000 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8001
8002 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8003 req.flags |= ASSOC_REQ_DISABLE_HT;
8004
8005 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8006 memcpy(&req.ht_capa_mask,
8007 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8008 sizeof(req.ht_capa_mask));
8009
8010 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8011 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8012 return -EINVAL;
8013 memcpy(&req.ht_capa,
8014 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8015 sizeof(req.ht_capa));
8016 }
8017
8018 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8019 req.flags |= ASSOC_REQ_DISABLE_VHT;
8020
8021 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8022 memcpy(&req.vht_capa_mask,
8023 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8024 sizeof(req.vht_capa_mask));
8025
8026 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8027 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8028 return -EINVAL;
8029 memcpy(&req.vht_capa,
8030 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8031 sizeof(req.vht_capa));
8032 }
8033
8034 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8035 if (!((rdev->wiphy.features &
8036 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8037 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8038 !wiphy_ext_feature_isset(&rdev->wiphy,
8039 NL80211_EXT_FEATURE_RRM))
8040 return -EINVAL;
8041 req.flags |= ASSOC_REQ_USE_RRM;
8042 }
8043
8044 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8045 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8046 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8047 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8048 return -EINVAL;
8049 req.fils_nonces =
8050 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8051 }
8052
8053 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8054 if (!err) {
8055 wdev_lock(dev->ieee80211_ptr);
8056 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8057 ssid, ssid_len, &req);
8058 wdev_unlock(dev->ieee80211_ptr);
8059 }
8060
8061 return err;
8062 }
8063
8064 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8065 {
8066 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8067 struct net_device *dev = info->user_ptr[1];
8068 const u8 *ie = NULL, *bssid;
8069 int ie_len = 0, err;
8070 u16 reason_code;
8071 bool local_state_change;
8072
8073 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8074 return -EINVAL;
8075
8076 if (!info->attrs[NL80211_ATTR_MAC])
8077 return -EINVAL;
8078
8079 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8080 return -EINVAL;
8081
8082 if (!rdev->ops->deauth)
8083 return -EOPNOTSUPP;
8084
8085 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8086 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8087 return -EOPNOTSUPP;
8088
8089 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8090
8091 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8092 if (reason_code == 0) {
8093 /* Reason Code 0 is reserved */
8094 return -EINVAL;
8095 }
8096
8097 if (info->attrs[NL80211_ATTR_IE]) {
8098 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8099 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8100 }
8101
8102 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8103
8104 wdev_lock(dev->ieee80211_ptr);
8105 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8106 local_state_change);
8107 wdev_unlock(dev->ieee80211_ptr);
8108 return err;
8109 }
8110
8111 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8112 {
8113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8114 struct net_device *dev = info->user_ptr[1];
8115 const u8 *ie = NULL, *bssid;
8116 int ie_len = 0, err;
8117 u16 reason_code;
8118 bool local_state_change;
8119
8120 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8121 return -EINVAL;
8122
8123 if (!info->attrs[NL80211_ATTR_MAC])
8124 return -EINVAL;
8125
8126 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8127 return -EINVAL;
8128
8129 if (!rdev->ops->disassoc)
8130 return -EOPNOTSUPP;
8131
8132 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8133 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8134 return -EOPNOTSUPP;
8135
8136 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8137
8138 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8139 if (reason_code == 0) {
8140 /* Reason Code 0 is reserved */
8141 return -EINVAL;
8142 }
8143
8144 if (info->attrs[NL80211_ATTR_IE]) {
8145 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8146 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8147 }
8148
8149 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8150
8151 wdev_lock(dev->ieee80211_ptr);
8152 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8153 local_state_change);
8154 wdev_unlock(dev->ieee80211_ptr);
8155 return err;
8156 }
8157
8158 static bool
8159 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8160 int mcast_rate[NUM_NL80211_BANDS],
8161 int rateval)
8162 {
8163 struct wiphy *wiphy = &rdev->wiphy;
8164 bool found = false;
8165 int band, i;
8166
8167 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8168 struct ieee80211_supported_band *sband;
8169
8170 sband = wiphy->bands[band];
8171 if (!sband)
8172 continue;
8173
8174 for (i = 0; i < sband->n_bitrates; i++) {
8175 if (sband->bitrates[i].bitrate == rateval) {
8176 mcast_rate[band] = i + 1;
8177 found = true;
8178 break;
8179 }
8180 }
8181 }
8182
8183 return found;
8184 }
8185
8186 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8187 {
8188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8189 struct net_device *dev = info->user_ptr[1];
8190 struct cfg80211_ibss_params ibss;
8191 struct wiphy *wiphy;
8192 struct cfg80211_cached_keys *connkeys = NULL;
8193 int err;
8194
8195 memset(&ibss, 0, sizeof(ibss));
8196
8197 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8198 return -EINVAL;
8199
8200 if (!info->attrs[NL80211_ATTR_SSID] ||
8201 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8202 return -EINVAL;
8203
8204 ibss.beacon_interval = 100;
8205
8206 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8207 ibss.beacon_interval =
8208 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8209
8210 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8211 ibss.beacon_interval);
8212 if (err)
8213 return err;
8214
8215 if (!rdev->ops->join_ibss)
8216 return -EOPNOTSUPP;
8217
8218 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8219 return -EOPNOTSUPP;
8220
8221 wiphy = &rdev->wiphy;
8222
8223 if (info->attrs[NL80211_ATTR_MAC]) {
8224 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8225
8226 if (!is_valid_ether_addr(ibss.bssid))
8227 return -EINVAL;
8228 }
8229 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8230 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8231
8232 if (info->attrs[NL80211_ATTR_IE]) {
8233 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8234 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8235 }
8236
8237 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8238 if (err)
8239 return err;
8240
8241 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8242 NL80211_IFTYPE_ADHOC))
8243 return -EINVAL;
8244
8245 switch (ibss.chandef.width) {
8246 case NL80211_CHAN_WIDTH_5:
8247 case NL80211_CHAN_WIDTH_10:
8248 case NL80211_CHAN_WIDTH_20_NOHT:
8249 break;
8250 case NL80211_CHAN_WIDTH_20:
8251 case NL80211_CHAN_WIDTH_40:
8252 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8253 return -EINVAL;
8254 break;
8255 case NL80211_CHAN_WIDTH_80:
8256 case NL80211_CHAN_WIDTH_80P80:
8257 case NL80211_CHAN_WIDTH_160:
8258 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8259 return -EINVAL;
8260 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8261 NL80211_EXT_FEATURE_VHT_IBSS))
8262 return -EINVAL;
8263 break;
8264 default:
8265 return -EINVAL;
8266 }
8267
8268 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8269 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8270
8271 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8272 u8 *rates =
8273 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8274 int n_rates =
8275 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8276 struct ieee80211_supported_band *sband =
8277 wiphy->bands[ibss.chandef.chan->band];
8278
8279 err = ieee80211_get_ratemask(sband, rates, n_rates,
8280 &ibss.basic_rates);
8281 if (err)
8282 return err;
8283 }
8284
8285 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8286 memcpy(&ibss.ht_capa_mask,
8287 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8288 sizeof(ibss.ht_capa_mask));
8289
8290 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8291 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8292 return -EINVAL;
8293 memcpy(&ibss.ht_capa,
8294 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8295 sizeof(ibss.ht_capa));
8296 }
8297
8298 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8299 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8300 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8301 return -EINVAL;
8302
8303 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8304 bool no_ht = false;
8305
8306 connkeys = nl80211_parse_connkeys(rdev,
8307 info->attrs[NL80211_ATTR_KEYS],
8308 &no_ht);
8309 if (IS_ERR(connkeys))
8310 return PTR_ERR(connkeys);
8311
8312 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8313 no_ht) {
8314 kzfree(connkeys);
8315 return -EINVAL;
8316 }
8317 }
8318
8319 ibss.control_port =
8320 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8321
8322 ibss.userspace_handles_dfs =
8323 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8324
8325 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8326 if (err)
8327 kzfree(connkeys);
8328 return err;
8329 }
8330
8331 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8332 {
8333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8334 struct net_device *dev = info->user_ptr[1];
8335
8336 if (!rdev->ops->leave_ibss)
8337 return -EOPNOTSUPP;
8338
8339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8340 return -EOPNOTSUPP;
8341
8342 return cfg80211_leave_ibss(rdev, dev, false);
8343 }
8344
8345 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8346 {
8347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8348 struct net_device *dev = info->user_ptr[1];
8349 int mcast_rate[NUM_NL80211_BANDS];
8350 u32 nla_rate;
8351 int err;
8352
8353 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8354 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8355 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8356 return -EOPNOTSUPP;
8357
8358 if (!rdev->ops->set_mcast_rate)
8359 return -EOPNOTSUPP;
8360
8361 memset(mcast_rate, 0, sizeof(mcast_rate));
8362
8363 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8364 return -EINVAL;
8365
8366 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8367 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8368 return -EINVAL;
8369
8370 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8371
8372 return err;
8373 }
8374
8375 static struct sk_buff *
8376 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8377 struct wireless_dev *wdev, int approxlen,
8378 u32 portid, u32 seq, enum nl80211_commands cmd,
8379 enum nl80211_attrs attr,
8380 const struct nl80211_vendor_cmd_info *info,
8381 gfp_t gfp)
8382 {
8383 struct sk_buff *skb;
8384 void *hdr;
8385 struct nlattr *data;
8386
8387 skb = nlmsg_new(approxlen + 100, gfp);
8388 if (!skb)
8389 return NULL;
8390
8391 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8392 if (!hdr) {
8393 kfree_skb(skb);
8394 return NULL;
8395 }
8396
8397 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8398 goto nla_put_failure;
8399
8400 if (info) {
8401 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8402 info->vendor_id))
8403 goto nla_put_failure;
8404 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8405 info->subcmd))
8406 goto nla_put_failure;
8407 }
8408
8409 if (wdev) {
8410 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8411 wdev_id(wdev), NL80211_ATTR_PAD))
8412 goto nla_put_failure;
8413 if (wdev->netdev &&
8414 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8415 wdev->netdev->ifindex))
8416 goto nla_put_failure;
8417 }
8418
8419 data = nla_nest_start(skb, attr);
8420 if (!data)
8421 goto nla_put_failure;
8422
8423 ((void **)skb->cb)[0] = rdev;
8424 ((void **)skb->cb)[1] = hdr;
8425 ((void **)skb->cb)[2] = data;
8426
8427 return skb;
8428
8429 nla_put_failure:
8430 kfree_skb(skb);
8431 return NULL;
8432 }
8433
8434 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8435 struct wireless_dev *wdev,
8436 enum nl80211_commands cmd,
8437 enum nl80211_attrs attr,
8438 int vendor_event_idx,
8439 int approxlen, gfp_t gfp)
8440 {
8441 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8442 const struct nl80211_vendor_cmd_info *info;
8443
8444 switch (cmd) {
8445 case NL80211_CMD_TESTMODE:
8446 if (WARN_ON(vendor_event_idx != -1))
8447 return NULL;
8448 info = NULL;
8449 break;
8450 case NL80211_CMD_VENDOR:
8451 if (WARN_ON(vendor_event_idx < 0 ||
8452 vendor_event_idx >= wiphy->n_vendor_events))
8453 return NULL;
8454 info = &wiphy->vendor_events[vendor_event_idx];
8455 break;
8456 default:
8457 WARN_ON(1);
8458 return NULL;
8459 }
8460
8461 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8462 cmd, attr, info, gfp);
8463 }
8464 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8465
8466 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8467 {
8468 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8469 void *hdr = ((void **)skb->cb)[1];
8470 struct nlattr *data = ((void **)skb->cb)[2];
8471 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8472
8473 /* clear CB data for netlink core to own from now on */
8474 memset(skb->cb, 0, sizeof(skb->cb));
8475
8476 nla_nest_end(skb, data);
8477 genlmsg_end(skb, hdr);
8478
8479 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8480 mcgrp = NL80211_MCGRP_VENDOR;
8481
8482 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8483 mcgrp, gfp);
8484 }
8485 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8486
8487 #ifdef CONFIG_NL80211_TESTMODE
8488 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8489 {
8490 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8491 struct wireless_dev *wdev =
8492 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8493 int err;
8494
8495 if (!rdev->ops->testmode_cmd)
8496 return -EOPNOTSUPP;
8497
8498 if (IS_ERR(wdev)) {
8499 err = PTR_ERR(wdev);
8500 if (err != -EINVAL)
8501 return err;
8502 wdev = NULL;
8503 } else if (wdev->wiphy != &rdev->wiphy) {
8504 return -EINVAL;
8505 }
8506
8507 if (!info->attrs[NL80211_ATTR_TESTDATA])
8508 return -EINVAL;
8509
8510 rdev->cur_cmd_info = info;
8511 err = rdev_testmode_cmd(rdev, wdev,
8512 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8513 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8514 rdev->cur_cmd_info = NULL;
8515
8516 return err;
8517 }
8518
8519 static int nl80211_testmode_dump(struct sk_buff *skb,
8520 struct netlink_callback *cb)
8521 {
8522 struct cfg80211_registered_device *rdev;
8523 int err;
8524 long phy_idx;
8525 void *data = NULL;
8526 int data_len = 0;
8527
8528 rtnl_lock();
8529
8530 if (cb->args[0]) {
8531 /*
8532 * 0 is a valid index, but not valid for args[0],
8533 * so we need to offset by 1.
8534 */
8535 phy_idx = cb->args[0] - 1;
8536 } else {
8537 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8538
8539 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8540 attrbuf, nl80211_fam.maxattr, nl80211_policy);
8541 if (err)
8542 goto out_err;
8543
8544 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8545 if (IS_ERR(rdev)) {
8546 err = PTR_ERR(rdev);
8547 goto out_err;
8548 }
8549 phy_idx = rdev->wiphy_idx;
8550 rdev = NULL;
8551
8552 if (attrbuf[NL80211_ATTR_TESTDATA])
8553 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8554 }
8555
8556 if (cb->args[1]) {
8557 data = nla_data((void *)cb->args[1]);
8558 data_len = nla_len((void *)cb->args[1]);
8559 }
8560
8561 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8562 if (!rdev) {
8563 err = -ENOENT;
8564 goto out_err;
8565 }
8566
8567 if (!rdev->ops->testmode_dump) {
8568 err = -EOPNOTSUPP;
8569 goto out_err;
8570 }
8571
8572 while (1) {
8573 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8574 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8575 NL80211_CMD_TESTMODE);
8576 struct nlattr *tmdata;
8577
8578 if (!hdr)
8579 break;
8580
8581 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8582 genlmsg_cancel(skb, hdr);
8583 break;
8584 }
8585
8586 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8587 if (!tmdata) {
8588 genlmsg_cancel(skb, hdr);
8589 break;
8590 }
8591 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8592 nla_nest_end(skb, tmdata);
8593
8594 if (err == -ENOBUFS || err == -ENOENT) {
8595 genlmsg_cancel(skb, hdr);
8596 break;
8597 } else if (err) {
8598 genlmsg_cancel(skb, hdr);
8599 goto out_err;
8600 }
8601
8602 genlmsg_end(skb, hdr);
8603 }
8604
8605 err = skb->len;
8606 /* see above */
8607 cb->args[0] = phy_idx + 1;
8608 out_err:
8609 rtnl_unlock();
8610 return err;
8611 }
8612 #endif
8613
8614 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8615 {
8616 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8617 struct net_device *dev = info->user_ptr[1];
8618 struct cfg80211_connect_params connect;
8619 struct wiphy *wiphy;
8620 struct cfg80211_cached_keys *connkeys = NULL;
8621 int err;
8622
8623 memset(&connect, 0, sizeof(connect));
8624
8625 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8626 return -EINVAL;
8627
8628 if (!info->attrs[NL80211_ATTR_SSID] ||
8629 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8630 return -EINVAL;
8631
8632 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8633 connect.auth_type =
8634 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8635 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8636 NL80211_CMD_CONNECT))
8637 return -EINVAL;
8638 } else
8639 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8640
8641 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8642
8643 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8644 NL80211_MAX_NR_CIPHER_SUITES);
8645 if (err)
8646 return err;
8647
8648 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8649 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8650 return -EOPNOTSUPP;
8651
8652 wiphy = &rdev->wiphy;
8653
8654 connect.bg_scan_period = -1;
8655 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8656 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8657 connect.bg_scan_period =
8658 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8659 }
8660
8661 if (info->attrs[NL80211_ATTR_MAC])
8662 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8663 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8664 connect.bssid_hint =
8665 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8666 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8667 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8668
8669 if (info->attrs[NL80211_ATTR_IE]) {
8670 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8671 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8672 }
8673
8674 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8675 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8676 if (connect.mfp != NL80211_MFP_REQUIRED &&
8677 connect.mfp != NL80211_MFP_NO)
8678 return -EINVAL;
8679 } else {
8680 connect.mfp = NL80211_MFP_NO;
8681 }
8682
8683 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8684 connect.prev_bssid =
8685 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8686
8687 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8688 connect.channel = nl80211_get_valid_chan(
8689 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8690 if (!connect.channel)
8691 return -EINVAL;
8692 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8693 connect.channel_hint = nl80211_get_valid_chan(
8694 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8695 if (!connect.channel_hint)
8696 return -EINVAL;
8697 }
8698
8699 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8700 connkeys = nl80211_parse_connkeys(rdev,
8701 info->attrs[NL80211_ATTR_KEYS], NULL);
8702 if (IS_ERR(connkeys))
8703 return PTR_ERR(connkeys);
8704 }
8705
8706 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8707 connect.flags |= ASSOC_REQ_DISABLE_HT;
8708
8709 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8710 memcpy(&connect.ht_capa_mask,
8711 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8712 sizeof(connect.ht_capa_mask));
8713
8714 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8715 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8716 kzfree(connkeys);
8717 return -EINVAL;
8718 }
8719 memcpy(&connect.ht_capa,
8720 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8721 sizeof(connect.ht_capa));
8722 }
8723
8724 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8725 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8726
8727 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8728 memcpy(&connect.vht_capa_mask,
8729 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8730 sizeof(connect.vht_capa_mask));
8731
8732 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8733 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8734 kzfree(connkeys);
8735 return -EINVAL;
8736 }
8737 memcpy(&connect.vht_capa,
8738 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8739 sizeof(connect.vht_capa));
8740 }
8741
8742 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8743 if (!((rdev->wiphy.features &
8744 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8745 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8746 !wiphy_ext_feature_isset(&rdev->wiphy,
8747 NL80211_EXT_FEATURE_RRM)) {
8748 kzfree(connkeys);
8749 return -EINVAL;
8750 }
8751 connect.flags |= ASSOC_REQ_USE_RRM;
8752 }
8753
8754 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8755 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8756 kzfree(connkeys);
8757 return -EOPNOTSUPP;
8758 }
8759
8760 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8761 /* bss selection makes no sense if bssid is set */
8762 if (connect.bssid) {
8763 kzfree(connkeys);
8764 return -EINVAL;
8765 }
8766
8767 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8768 wiphy, &connect.bss_select);
8769 if (err) {
8770 kzfree(connkeys);
8771 return err;
8772 }
8773 }
8774
8775 wdev_lock(dev->ieee80211_ptr);
8776 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8777 connect.prev_bssid);
8778 wdev_unlock(dev->ieee80211_ptr);
8779 if (err)
8780 kzfree(connkeys);
8781 return err;
8782 }
8783
8784 static int nl80211_update_connect_params(struct sk_buff *skb,
8785 struct genl_info *info)
8786 {
8787 struct cfg80211_connect_params connect = {};
8788 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789 struct net_device *dev = info->user_ptr[1];
8790 struct wireless_dev *wdev = dev->ieee80211_ptr;
8791 u32 changed = 0;
8792 int ret;
8793
8794 if (!rdev->ops->update_connect_params)
8795 return -EOPNOTSUPP;
8796
8797 if (info->attrs[NL80211_ATTR_IE]) {
8798 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8799 return -EINVAL;
8800 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8801 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8802 changed |= UPDATE_ASSOC_IES;
8803 }
8804
8805 wdev_lock(dev->ieee80211_ptr);
8806 if (!wdev->current_bss)
8807 ret = -ENOLINK;
8808 else
8809 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8810 wdev_unlock(dev->ieee80211_ptr);
8811
8812 return ret;
8813 }
8814
8815 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8816 {
8817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8818 struct net_device *dev = info->user_ptr[1];
8819 u16 reason;
8820 int ret;
8821
8822 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8823 reason = WLAN_REASON_DEAUTH_LEAVING;
8824 else
8825 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8826
8827 if (reason == 0)
8828 return -EINVAL;
8829
8830 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8831 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8832 return -EOPNOTSUPP;
8833
8834 wdev_lock(dev->ieee80211_ptr);
8835 ret = cfg80211_disconnect(rdev, dev, reason, true);
8836 wdev_unlock(dev->ieee80211_ptr);
8837 return ret;
8838 }
8839
8840 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8841 {
8842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843 struct net *net;
8844 int err;
8845
8846 if (info->attrs[NL80211_ATTR_PID]) {
8847 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8848
8849 net = get_net_ns_by_pid(pid);
8850 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8851 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8852
8853 net = get_net_ns_by_fd(fd);
8854 } else {
8855 return -EINVAL;
8856 }
8857
8858 if (IS_ERR(net))
8859 return PTR_ERR(net);
8860
8861 err = 0;
8862
8863 /* check if anything to do */
8864 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8865 err = cfg80211_switch_netns(rdev, net);
8866
8867 put_net(net);
8868 return err;
8869 }
8870
8871 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8872 {
8873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8874 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8875 struct cfg80211_pmksa *pmksa) = NULL;
8876 struct net_device *dev = info->user_ptr[1];
8877 struct cfg80211_pmksa pmksa;
8878
8879 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8880
8881 if (!info->attrs[NL80211_ATTR_MAC])
8882 return -EINVAL;
8883
8884 if (!info->attrs[NL80211_ATTR_PMKID])
8885 return -EINVAL;
8886
8887 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8888 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8889
8890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8891 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8892 return -EOPNOTSUPP;
8893
8894 switch (info->genlhdr->cmd) {
8895 case NL80211_CMD_SET_PMKSA:
8896 rdev_ops = rdev->ops->set_pmksa;
8897 break;
8898 case NL80211_CMD_DEL_PMKSA:
8899 rdev_ops = rdev->ops->del_pmksa;
8900 break;
8901 default:
8902 WARN_ON(1);
8903 break;
8904 }
8905
8906 if (!rdev_ops)
8907 return -EOPNOTSUPP;
8908
8909 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8910 }
8911
8912 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8913 {
8914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8915 struct net_device *dev = info->user_ptr[1];
8916
8917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8918 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8919 return -EOPNOTSUPP;
8920
8921 if (!rdev->ops->flush_pmksa)
8922 return -EOPNOTSUPP;
8923
8924 return rdev_flush_pmksa(rdev, dev);
8925 }
8926
8927 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8928 {
8929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930 struct net_device *dev = info->user_ptr[1];
8931 u8 action_code, dialog_token;
8932 u32 peer_capability = 0;
8933 u16 status_code;
8934 u8 *peer;
8935 bool initiator;
8936
8937 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8938 !rdev->ops->tdls_mgmt)
8939 return -EOPNOTSUPP;
8940
8941 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8942 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8943 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8944 !info->attrs[NL80211_ATTR_IE] ||
8945 !info->attrs[NL80211_ATTR_MAC])
8946 return -EINVAL;
8947
8948 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8949 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8950 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8951 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8952 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8953 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8954 peer_capability =
8955 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8956
8957 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8958 dialog_token, status_code, peer_capability,
8959 initiator,
8960 nla_data(info->attrs[NL80211_ATTR_IE]),
8961 nla_len(info->attrs[NL80211_ATTR_IE]));
8962 }
8963
8964 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8965 {
8966 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8967 struct net_device *dev = info->user_ptr[1];
8968 enum nl80211_tdls_operation operation;
8969 u8 *peer;
8970
8971 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8972 !rdev->ops->tdls_oper)
8973 return -EOPNOTSUPP;
8974
8975 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8976 !info->attrs[NL80211_ATTR_MAC])
8977 return -EINVAL;
8978
8979 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8980 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8981
8982 return rdev_tdls_oper(rdev, dev, peer, operation);
8983 }
8984
8985 static int nl80211_remain_on_channel(struct sk_buff *skb,
8986 struct genl_info *info)
8987 {
8988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8989 struct wireless_dev *wdev = info->user_ptr[1];
8990 struct cfg80211_chan_def chandef;
8991 struct sk_buff *msg;
8992 void *hdr;
8993 u64 cookie;
8994 u32 duration;
8995 int err;
8996
8997 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8998 !info->attrs[NL80211_ATTR_DURATION])
8999 return -EINVAL;
9000
9001 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9002
9003 if (!rdev->ops->remain_on_channel ||
9004 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9005 return -EOPNOTSUPP;
9006
9007 /*
9008 * We should be on that channel for at least a minimum amount of
9009 * time (10ms) but no longer than the driver supports.
9010 */
9011 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9012 duration > rdev->wiphy.max_remain_on_channel_duration)
9013 return -EINVAL;
9014
9015 err = nl80211_parse_chandef(rdev, info, &chandef);
9016 if (err)
9017 return err;
9018
9019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9020 if (!msg)
9021 return -ENOMEM;
9022
9023 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9024 NL80211_CMD_REMAIN_ON_CHANNEL);
9025 if (!hdr) {
9026 err = -ENOBUFS;
9027 goto free_msg;
9028 }
9029
9030 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9031 duration, &cookie);
9032
9033 if (err)
9034 goto free_msg;
9035
9036 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9037 NL80211_ATTR_PAD))
9038 goto nla_put_failure;
9039
9040 genlmsg_end(msg, hdr);
9041
9042 return genlmsg_reply(msg, info);
9043
9044 nla_put_failure:
9045 err = -ENOBUFS;
9046 free_msg:
9047 nlmsg_free(msg);
9048 return err;
9049 }
9050
9051 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9052 struct genl_info *info)
9053 {
9054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9055 struct wireless_dev *wdev = info->user_ptr[1];
9056 u64 cookie;
9057
9058 if (!info->attrs[NL80211_ATTR_COOKIE])
9059 return -EINVAL;
9060
9061 if (!rdev->ops->cancel_remain_on_channel)
9062 return -EOPNOTSUPP;
9063
9064 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9065
9066 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9067 }
9068
9069 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9070 struct genl_info *info)
9071 {
9072 struct cfg80211_bitrate_mask mask;
9073 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9074 struct net_device *dev = info->user_ptr[1];
9075 int err;
9076
9077 if (!rdev->ops->set_bitrate_mask)
9078 return -EOPNOTSUPP;
9079
9080 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9081 if (err)
9082 return err;
9083
9084 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9085 }
9086
9087 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9088 {
9089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9090 struct wireless_dev *wdev = info->user_ptr[1];
9091 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9092
9093 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9094 return -EINVAL;
9095
9096 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9097 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9098
9099 switch (wdev->iftype) {
9100 case NL80211_IFTYPE_STATION:
9101 case NL80211_IFTYPE_ADHOC:
9102 case NL80211_IFTYPE_P2P_CLIENT:
9103 case NL80211_IFTYPE_AP:
9104 case NL80211_IFTYPE_AP_VLAN:
9105 case NL80211_IFTYPE_MESH_POINT:
9106 case NL80211_IFTYPE_P2P_GO:
9107 case NL80211_IFTYPE_P2P_DEVICE:
9108 break;
9109 case NL80211_IFTYPE_NAN:
9110 default:
9111 return -EOPNOTSUPP;
9112 }
9113
9114 /* not much point in registering if we can't reply */
9115 if (!rdev->ops->mgmt_tx)
9116 return -EOPNOTSUPP;
9117
9118 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9119 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9120 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9121 }
9122
9123 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9124 {
9125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9126 struct wireless_dev *wdev = info->user_ptr[1];
9127 struct cfg80211_chan_def chandef;
9128 int err;
9129 void *hdr = NULL;
9130 u64 cookie;
9131 struct sk_buff *msg = NULL;
9132 struct cfg80211_mgmt_tx_params params = {
9133 .dont_wait_for_ack =
9134 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9135 };
9136
9137 if (!info->attrs[NL80211_ATTR_FRAME])
9138 return -EINVAL;
9139
9140 if (!rdev->ops->mgmt_tx)
9141 return -EOPNOTSUPP;
9142
9143 switch (wdev->iftype) {
9144 case NL80211_IFTYPE_P2P_DEVICE:
9145 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9146 return -EINVAL;
9147 case NL80211_IFTYPE_STATION:
9148 case NL80211_IFTYPE_ADHOC:
9149 case NL80211_IFTYPE_P2P_CLIENT:
9150 case NL80211_IFTYPE_AP:
9151 case NL80211_IFTYPE_AP_VLAN:
9152 case NL80211_IFTYPE_MESH_POINT:
9153 case NL80211_IFTYPE_P2P_GO:
9154 break;
9155 case NL80211_IFTYPE_NAN:
9156 default:
9157 return -EOPNOTSUPP;
9158 }
9159
9160 if (info->attrs[NL80211_ATTR_DURATION]) {
9161 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9162 return -EINVAL;
9163 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9164
9165 /*
9166 * We should wait on the channel for at least a minimum amount
9167 * of time (10ms) but no longer than the driver supports.
9168 */
9169 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9170 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9171 return -EINVAL;
9172 }
9173
9174 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9175
9176 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9177 return -EINVAL;
9178
9179 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9180
9181 /* get the channel if any has been specified, otherwise pass NULL to
9182 * the driver. The latter will use the current one
9183 */
9184 chandef.chan = NULL;
9185 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9186 err = nl80211_parse_chandef(rdev, info, &chandef);
9187 if (err)
9188 return err;
9189 }
9190
9191 if (!chandef.chan && params.offchan)
9192 return -EINVAL;
9193
9194 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9195 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9196
9197 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9198 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9199 int i;
9200
9201 if (len % sizeof(u16))
9202 return -EINVAL;
9203
9204 params.n_csa_offsets = len / sizeof(u16);
9205 params.csa_offsets =
9206 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9207
9208 /* check that all the offsets fit the frame */
9209 for (i = 0; i < params.n_csa_offsets; i++) {
9210 if (params.csa_offsets[i] >= params.len)
9211 return -EINVAL;
9212 }
9213 }
9214
9215 if (!params.dont_wait_for_ack) {
9216 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9217 if (!msg)
9218 return -ENOMEM;
9219
9220 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9221 NL80211_CMD_FRAME);
9222 if (!hdr) {
9223 err = -ENOBUFS;
9224 goto free_msg;
9225 }
9226 }
9227
9228 params.chan = chandef.chan;
9229 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9230 if (err)
9231 goto free_msg;
9232
9233 if (msg) {
9234 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9235 NL80211_ATTR_PAD))
9236 goto nla_put_failure;
9237
9238 genlmsg_end(msg, hdr);
9239 return genlmsg_reply(msg, info);
9240 }
9241
9242 return 0;
9243
9244 nla_put_failure:
9245 err = -ENOBUFS;
9246 free_msg:
9247 nlmsg_free(msg);
9248 return err;
9249 }
9250
9251 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9252 {
9253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9254 struct wireless_dev *wdev = info->user_ptr[1];
9255 u64 cookie;
9256
9257 if (!info->attrs[NL80211_ATTR_COOKIE])
9258 return -EINVAL;
9259
9260 if (!rdev->ops->mgmt_tx_cancel_wait)
9261 return -EOPNOTSUPP;
9262
9263 switch (wdev->iftype) {
9264 case NL80211_IFTYPE_STATION:
9265 case NL80211_IFTYPE_ADHOC:
9266 case NL80211_IFTYPE_P2P_CLIENT:
9267 case NL80211_IFTYPE_AP:
9268 case NL80211_IFTYPE_AP_VLAN:
9269 case NL80211_IFTYPE_P2P_GO:
9270 case NL80211_IFTYPE_P2P_DEVICE:
9271 break;
9272 case NL80211_IFTYPE_NAN:
9273 default:
9274 return -EOPNOTSUPP;
9275 }
9276
9277 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9278
9279 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9280 }
9281
9282 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9283 {
9284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9285 struct wireless_dev *wdev;
9286 struct net_device *dev = info->user_ptr[1];
9287 u8 ps_state;
9288 bool state;
9289 int err;
9290
9291 if (!info->attrs[NL80211_ATTR_PS_STATE])
9292 return -EINVAL;
9293
9294 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9295
9296 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9297 return -EINVAL;
9298
9299 wdev = dev->ieee80211_ptr;
9300
9301 if (!rdev->ops->set_power_mgmt)
9302 return -EOPNOTSUPP;
9303
9304 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9305
9306 if (state == wdev->ps)
9307 return 0;
9308
9309 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9310 if (!err)
9311 wdev->ps = state;
9312 return err;
9313 }
9314
9315 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9316 {
9317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9318 enum nl80211_ps_state ps_state;
9319 struct wireless_dev *wdev;
9320 struct net_device *dev = info->user_ptr[1];
9321 struct sk_buff *msg;
9322 void *hdr;
9323 int err;
9324
9325 wdev = dev->ieee80211_ptr;
9326
9327 if (!rdev->ops->set_power_mgmt)
9328 return -EOPNOTSUPP;
9329
9330 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9331 if (!msg)
9332 return -ENOMEM;
9333
9334 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9335 NL80211_CMD_GET_POWER_SAVE);
9336 if (!hdr) {
9337 err = -ENOBUFS;
9338 goto free_msg;
9339 }
9340
9341 if (wdev->ps)
9342 ps_state = NL80211_PS_ENABLED;
9343 else
9344 ps_state = NL80211_PS_DISABLED;
9345
9346 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9347 goto nla_put_failure;
9348
9349 genlmsg_end(msg, hdr);
9350 return genlmsg_reply(msg, info);
9351
9352 nla_put_failure:
9353 err = -ENOBUFS;
9354 free_msg:
9355 nlmsg_free(msg);
9356 return err;
9357 }
9358
9359 static const struct nla_policy
9360 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9361 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9362 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9363 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9364 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9365 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9366 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9367 };
9368
9369 static int nl80211_set_cqm_txe(struct genl_info *info,
9370 u32 rate, u32 pkts, u32 intvl)
9371 {
9372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9373 struct net_device *dev = info->user_ptr[1];
9374 struct wireless_dev *wdev = dev->ieee80211_ptr;
9375
9376 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9377 return -EINVAL;
9378
9379 if (!rdev->ops->set_cqm_txe_config)
9380 return -EOPNOTSUPP;
9381
9382 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9383 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9384 return -EOPNOTSUPP;
9385
9386 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9387 }
9388
9389 static int nl80211_set_cqm_rssi(struct genl_info *info,
9390 s32 threshold, u32 hysteresis)
9391 {
9392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9393 struct net_device *dev = info->user_ptr[1];
9394 struct wireless_dev *wdev = dev->ieee80211_ptr;
9395
9396 if (threshold > 0)
9397 return -EINVAL;
9398
9399 /* disabling - hysteresis should also be zero then */
9400 if (threshold == 0)
9401 hysteresis = 0;
9402
9403 if (!rdev->ops->set_cqm_rssi_config)
9404 return -EOPNOTSUPP;
9405
9406 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9407 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9408 return -EOPNOTSUPP;
9409
9410 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9411 }
9412
9413 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9414 {
9415 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9416 struct nlattr *cqm;
9417 int err;
9418
9419 cqm = info->attrs[NL80211_ATTR_CQM];
9420 if (!cqm)
9421 return -EINVAL;
9422
9423 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9424 nl80211_attr_cqm_policy);
9425 if (err)
9426 return err;
9427
9428 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9429 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9430 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9431 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9432
9433 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9434 }
9435
9436 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9437 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9438 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9439 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9440 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9441 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9442
9443 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9444 }
9445
9446 return -EINVAL;
9447 }
9448
9449 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9450 {
9451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9452 struct net_device *dev = info->user_ptr[1];
9453 struct ocb_setup setup = {};
9454 int err;
9455
9456 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9457 if (err)
9458 return err;
9459
9460 return cfg80211_join_ocb(rdev, dev, &setup);
9461 }
9462
9463 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9464 {
9465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9466 struct net_device *dev = info->user_ptr[1];
9467
9468 return cfg80211_leave_ocb(rdev, dev);
9469 }
9470
9471 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9472 {
9473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9474 struct net_device *dev = info->user_ptr[1];
9475 struct mesh_config cfg;
9476 struct mesh_setup setup;
9477 int err;
9478
9479 /* start with default */
9480 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9481 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9482
9483 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9484 /* and parse parameters if given */
9485 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9486 if (err)
9487 return err;
9488 }
9489
9490 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9491 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9492 return -EINVAL;
9493
9494 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9495 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9496
9497 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9498 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9499 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9500 return -EINVAL;
9501
9502 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9503 setup.beacon_interval =
9504 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9505
9506 err = cfg80211_validate_beacon_int(rdev,
9507 NL80211_IFTYPE_MESH_POINT,
9508 setup.beacon_interval);
9509 if (err)
9510 return err;
9511 }
9512
9513 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9514 setup.dtim_period =
9515 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9516 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9517 return -EINVAL;
9518 }
9519
9520 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9521 /* parse additional setup parameters if given */
9522 err = nl80211_parse_mesh_setup(info, &setup);
9523 if (err)
9524 return err;
9525 }
9526
9527 if (setup.user_mpm)
9528 cfg.auto_open_plinks = false;
9529
9530 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9531 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9532 if (err)
9533 return err;
9534 } else {
9535 /* cfg80211_join_mesh() will sort it out */
9536 setup.chandef.chan = NULL;
9537 }
9538
9539 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9540 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9541 int n_rates =
9542 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9543 struct ieee80211_supported_band *sband;
9544
9545 if (!setup.chandef.chan)
9546 return -EINVAL;
9547
9548 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9549
9550 err = ieee80211_get_ratemask(sband, rates, n_rates,
9551 &setup.basic_rates);
9552 if (err)
9553 return err;
9554 }
9555
9556 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9557 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9558 if (err)
9559 return err;
9560
9561 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9562 &setup.beacon_rate);
9563 if (err)
9564 return err;
9565 }
9566
9567 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9568 }
9569
9570 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9571 {
9572 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9573 struct net_device *dev = info->user_ptr[1];
9574
9575 return cfg80211_leave_mesh(rdev, dev);
9576 }
9577
9578 #ifdef CONFIG_PM
9579 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9580 struct cfg80211_registered_device *rdev)
9581 {
9582 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9583 struct nlattr *nl_pats, *nl_pat;
9584 int i, pat_len;
9585
9586 if (!wowlan->n_patterns)
9587 return 0;
9588
9589 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9590 if (!nl_pats)
9591 return -ENOBUFS;
9592
9593 for (i = 0; i < wowlan->n_patterns; i++) {
9594 nl_pat = nla_nest_start(msg, i + 1);
9595 if (!nl_pat)
9596 return -ENOBUFS;
9597 pat_len = wowlan->patterns[i].pattern_len;
9598 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9599 wowlan->patterns[i].mask) ||
9600 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9601 wowlan->patterns[i].pattern) ||
9602 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9603 wowlan->patterns[i].pkt_offset))
9604 return -ENOBUFS;
9605 nla_nest_end(msg, nl_pat);
9606 }
9607 nla_nest_end(msg, nl_pats);
9608
9609 return 0;
9610 }
9611
9612 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9613 struct cfg80211_wowlan_tcp *tcp)
9614 {
9615 struct nlattr *nl_tcp;
9616
9617 if (!tcp)
9618 return 0;
9619
9620 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9621 if (!nl_tcp)
9622 return -ENOBUFS;
9623
9624 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9625 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9626 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9627 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9628 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9629 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9630 tcp->payload_len, tcp->payload) ||
9631 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9632 tcp->data_interval) ||
9633 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9634 tcp->wake_len, tcp->wake_data) ||
9635 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9636 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9637 return -ENOBUFS;
9638
9639 if (tcp->payload_seq.len &&
9640 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9641 sizeof(tcp->payload_seq), &tcp->payload_seq))
9642 return -ENOBUFS;
9643
9644 if (tcp->payload_tok.len &&
9645 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9646 sizeof(tcp->payload_tok) + tcp->tokens_size,
9647 &tcp->payload_tok))
9648 return -ENOBUFS;
9649
9650 nla_nest_end(msg, nl_tcp);
9651
9652 return 0;
9653 }
9654
9655 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9656 struct cfg80211_sched_scan_request *req)
9657 {
9658 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9659 int i;
9660
9661 if (!req)
9662 return 0;
9663
9664 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9665 if (!nd)
9666 return -ENOBUFS;
9667
9668 if (req->n_scan_plans == 1 &&
9669 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9670 req->scan_plans[0].interval * 1000))
9671 return -ENOBUFS;
9672
9673 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9674 return -ENOBUFS;
9675
9676 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9677 if (!freqs)
9678 return -ENOBUFS;
9679
9680 for (i = 0; i < req->n_channels; i++) {
9681 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9682 return -ENOBUFS;
9683 }
9684
9685 nla_nest_end(msg, freqs);
9686
9687 if (req->n_match_sets) {
9688 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9689 if (!matches)
9690 return -ENOBUFS;
9691
9692 for (i = 0; i < req->n_match_sets; i++) {
9693 match = nla_nest_start(msg, i);
9694 if (!match)
9695 return -ENOBUFS;
9696
9697 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9698 req->match_sets[i].ssid.ssid_len,
9699 req->match_sets[i].ssid.ssid))
9700 return -ENOBUFS;
9701 nla_nest_end(msg, match);
9702 }
9703 nla_nest_end(msg, matches);
9704 }
9705
9706 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9707 if (!scan_plans)
9708 return -ENOBUFS;
9709
9710 for (i = 0; i < req->n_scan_plans; i++) {
9711 scan_plan = nla_nest_start(msg, i + 1);
9712 if (!scan_plan)
9713 return -ENOBUFS;
9714
9715 if (!scan_plan ||
9716 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9717 req->scan_plans[i].interval) ||
9718 (req->scan_plans[i].iterations &&
9719 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9720 req->scan_plans[i].iterations)))
9721 return -ENOBUFS;
9722 nla_nest_end(msg, scan_plan);
9723 }
9724 nla_nest_end(msg, scan_plans);
9725
9726 nla_nest_end(msg, nd);
9727
9728 return 0;
9729 }
9730
9731 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9732 {
9733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9734 struct sk_buff *msg;
9735 void *hdr;
9736 u32 size = NLMSG_DEFAULT_SIZE;
9737
9738 if (!rdev->wiphy.wowlan)
9739 return -EOPNOTSUPP;
9740
9741 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9742 /* adjust size to have room for all the data */
9743 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9744 rdev->wiphy.wowlan_config->tcp->payload_len +
9745 rdev->wiphy.wowlan_config->tcp->wake_len +
9746 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9747 }
9748
9749 msg = nlmsg_new(size, GFP_KERNEL);
9750 if (!msg)
9751 return -ENOMEM;
9752
9753 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9754 NL80211_CMD_GET_WOWLAN);
9755 if (!hdr)
9756 goto nla_put_failure;
9757
9758 if (rdev->wiphy.wowlan_config) {
9759 struct nlattr *nl_wowlan;
9760
9761 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9762 if (!nl_wowlan)
9763 goto nla_put_failure;
9764
9765 if ((rdev->wiphy.wowlan_config->any &&
9766 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9767 (rdev->wiphy.wowlan_config->disconnect &&
9768 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9769 (rdev->wiphy.wowlan_config->magic_pkt &&
9770 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9771 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9772 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9773 (rdev->wiphy.wowlan_config->eap_identity_req &&
9774 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9775 (rdev->wiphy.wowlan_config->four_way_handshake &&
9776 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9777 (rdev->wiphy.wowlan_config->rfkill_release &&
9778 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9779 goto nla_put_failure;
9780
9781 if (nl80211_send_wowlan_patterns(msg, rdev))
9782 goto nla_put_failure;
9783
9784 if (nl80211_send_wowlan_tcp(msg,
9785 rdev->wiphy.wowlan_config->tcp))
9786 goto nla_put_failure;
9787
9788 if (nl80211_send_wowlan_nd(
9789 msg,
9790 rdev->wiphy.wowlan_config->nd_config))
9791 goto nla_put_failure;
9792
9793 nla_nest_end(msg, nl_wowlan);
9794 }
9795
9796 genlmsg_end(msg, hdr);
9797 return genlmsg_reply(msg, info);
9798
9799 nla_put_failure:
9800 nlmsg_free(msg);
9801 return -ENOBUFS;
9802 }
9803
9804 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9805 struct nlattr *attr,
9806 struct cfg80211_wowlan *trig)
9807 {
9808 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9809 struct cfg80211_wowlan_tcp *cfg;
9810 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9811 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9812 u32 size;
9813 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9814 int err, port;
9815
9816 if (!rdev->wiphy.wowlan->tcp)
9817 return -EINVAL;
9818
9819 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9820 nl80211_wowlan_tcp_policy);
9821 if (err)
9822 return err;
9823
9824 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9825 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9826 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9827 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9828 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9829 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9830 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9831 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9832 return -EINVAL;
9833
9834 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9835 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9836 return -EINVAL;
9837
9838 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9839 rdev->wiphy.wowlan->tcp->data_interval_max ||
9840 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9841 return -EINVAL;
9842
9843 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9844 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9845 return -EINVAL;
9846
9847 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9848 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9849 return -EINVAL;
9850
9851 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9852 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9853
9854 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9855 tokens_size = tokln - sizeof(*tok);
9856
9857 if (!tok->len || tokens_size % tok->len)
9858 return -EINVAL;
9859 if (!rdev->wiphy.wowlan->tcp->tok)
9860 return -EINVAL;
9861 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9862 return -EINVAL;
9863 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9864 return -EINVAL;
9865 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9866 return -EINVAL;
9867 if (tok->offset + tok->len > data_size)
9868 return -EINVAL;
9869 }
9870
9871 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9872 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9873 if (!rdev->wiphy.wowlan->tcp->seq)
9874 return -EINVAL;
9875 if (seq->len == 0 || seq->len > 4)
9876 return -EINVAL;
9877 if (seq->len + seq->offset > data_size)
9878 return -EINVAL;
9879 }
9880
9881 size = sizeof(*cfg);
9882 size += data_size;
9883 size += wake_size + wake_mask_size;
9884 size += tokens_size;
9885
9886 cfg = kzalloc(size, GFP_KERNEL);
9887 if (!cfg)
9888 return -ENOMEM;
9889 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9890 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9891 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9892 ETH_ALEN);
9893 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9894 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9895 else
9896 port = 0;
9897 #ifdef CONFIG_INET
9898 /* allocate a socket and port for it and use it */
9899 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9900 IPPROTO_TCP, &cfg->sock, 1);
9901 if (err) {
9902 kfree(cfg);
9903 return err;
9904 }
9905 if (inet_csk_get_port(cfg->sock->sk, port)) {
9906 sock_release(cfg->sock);
9907 kfree(cfg);
9908 return -EADDRINUSE;
9909 }
9910 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9911 #else
9912 if (!port) {
9913 kfree(cfg);
9914 return -EINVAL;
9915 }
9916 cfg->src_port = port;
9917 #endif
9918
9919 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9920 cfg->payload_len = data_size;
9921 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9922 memcpy((void *)cfg->payload,
9923 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9924 data_size);
9925 if (seq)
9926 cfg->payload_seq = *seq;
9927 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9928 cfg->wake_len = wake_size;
9929 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9930 memcpy((void *)cfg->wake_data,
9931 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9932 wake_size);
9933 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9934 data_size + wake_size;
9935 memcpy((void *)cfg->wake_mask,
9936 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9937 wake_mask_size);
9938 if (tok) {
9939 cfg->tokens_size = tokens_size;
9940 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9941 }
9942
9943 trig->tcp = cfg;
9944
9945 return 0;
9946 }
9947
9948 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9949 const struct wiphy_wowlan_support *wowlan,
9950 struct nlattr *attr,
9951 struct cfg80211_wowlan *trig)
9952 {
9953 struct nlattr **tb;
9954 int err;
9955
9956 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9957 if (!tb)
9958 return -ENOMEM;
9959
9960 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9961 err = -EOPNOTSUPP;
9962 goto out;
9963 }
9964
9965 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9966 if (err)
9967 goto out;
9968
9969 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9970 err = PTR_ERR_OR_ZERO(trig->nd_config);
9971 if (err)
9972 trig->nd_config = NULL;
9973
9974 out:
9975 kfree(tb);
9976 return err;
9977 }
9978
9979 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9980 {
9981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9982 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9983 struct cfg80211_wowlan new_triggers = {};
9984 struct cfg80211_wowlan *ntrig;
9985 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9986 int err, i;
9987 bool prev_enabled = rdev->wiphy.wowlan_config;
9988 bool regular = false;
9989
9990 if (!wowlan)
9991 return -EOPNOTSUPP;
9992
9993 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9994 cfg80211_rdev_free_wowlan(rdev);
9995 rdev->wiphy.wowlan_config = NULL;
9996 goto set_wakeup;
9997 }
9998
9999 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10000 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10001 nl80211_wowlan_policy);
10002 if (err)
10003 return err;
10004
10005 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10006 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10007 return -EINVAL;
10008 new_triggers.any = true;
10009 }
10010
10011 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10012 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10013 return -EINVAL;
10014 new_triggers.disconnect = true;
10015 regular = true;
10016 }
10017
10018 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10019 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10020 return -EINVAL;
10021 new_triggers.magic_pkt = true;
10022 regular = true;
10023 }
10024
10025 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10026 return -EINVAL;
10027
10028 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10029 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10030 return -EINVAL;
10031 new_triggers.gtk_rekey_failure = true;
10032 regular = true;
10033 }
10034
10035 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10036 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10037 return -EINVAL;
10038 new_triggers.eap_identity_req = true;
10039 regular = true;
10040 }
10041
10042 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10043 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10044 return -EINVAL;
10045 new_triggers.four_way_handshake = true;
10046 regular = true;
10047 }
10048
10049 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10050 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10051 return -EINVAL;
10052 new_triggers.rfkill_release = true;
10053 regular = true;
10054 }
10055
10056 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10057 struct nlattr *pat;
10058 int n_patterns = 0;
10059 int rem, pat_len, mask_len, pkt_offset;
10060 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10061
10062 regular = true;
10063
10064 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10065 rem)
10066 n_patterns++;
10067 if (n_patterns > wowlan->n_patterns)
10068 return -EINVAL;
10069
10070 new_triggers.patterns = kcalloc(n_patterns,
10071 sizeof(new_triggers.patterns[0]),
10072 GFP_KERNEL);
10073 if (!new_triggers.patterns)
10074 return -ENOMEM;
10075
10076 new_triggers.n_patterns = n_patterns;
10077 i = 0;
10078
10079 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10080 rem) {
10081 u8 *mask_pat;
10082
10083 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10084 NULL);
10085 err = -EINVAL;
10086 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10087 !pat_tb[NL80211_PKTPAT_PATTERN])
10088 goto error;
10089 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10090 mask_len = DIV_ROUND_UP(pat_len, 8);
10091 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10092 goto error;
10093 if (pat_len > wowlan->pattern_max_len ||
10094 pat_len < wowlan->pattern_min_len)
10095 goto error;
10096
10097 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10098 pkt_offset = 0;
10099 else
10100 pkt_offset = nla_get_u32(
10101 pat_tb[NL80211_PKTPAT_OFFSET]);
10102 if (pkt_offset > wowlan->max_pkt_offset)
10103 goto error;
10104 new_triggers.patterns[i].pkt_offset = pkt_offset;
10105
10106 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10107 if (!mask_pat) {
10108 err = -ENOMEM;
10109 goto error;
10110 }
10111 new_triggers.patterns[i].mask = mask_pat;
10112 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10113 mask_len);
10114 mask_pat += mask_len;
10115 new_triggers.patterns[i].pattern = mask_pat;
10116 new_triggers.patterns[i].pattern_len = pat_len;
10117 memcpy(mask_pat,
10118 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10119 pat_len);
10120 i++;
10121 }
10122 }
10123
10124 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10125 regular = true;
10126 err = nl80211_parse_wowlan_tcp(
10127 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10128 &new_triggers);
10129 if (err)
10130 goto error;
10131 }
10132
10133 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10134 regular = true;
10135 err = nl80211_parse_wowlan_nd(
10136 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10137 &new_triggers);
10138 if (err)
10139 goto error;
10140 }
10141
10142 /* The 'any' trigger means the device continues operating more or less
10143 * as in its normal operation mode and wakes up the host on most of the
10144 * normal interrupts (like packet RX, ...)
10145 * It therefore makes little sense to combine with the more constrained
10146 * wakeup trigger modes.
10147 */
10148 if (new_triggers.any && regular) {
10149 err = -EINVAL;
10150 goto error;
10151 }
10152
10153 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10154 if (!ntrig) {
10155 err = -ENOMEM;
10156 goto error;
10157 }
10158 cfg80211_rdev_free_wowlan(rdev);
10159 rdev->wiphy.wowlan_config = ntrig;
10160
10161 set_wakeup:
10162 if (rdev->ops->set_wakeup &&
10163 prev_enabled != !!rdev->wiphy.wowlan_config)
10164 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10165
10166 return 0;
10167 error:
10168 for (i = 0; i < new_triggers.n_patterns; i++)
10169 kfree(new_triggers.patterns[i].mask);
10170 kfree(new_triggers.patterns);
10171 if (new_triggers.tcp && new_triggers.tcp->sock)
10172 sock_release(new_triggers.tcp->sock);
10173 kfree(new_triggers.tcp);
10174 kfree(new_triggers.nd_config);
10175 return err;
10176 }
10177 #endif
10178
10179 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10180 struct cfg80211_registered_device *rdev)
10181 {
10182 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10183 int i, j, pat_len;
10184 struct cfg80211_coalesce_rules *rule;
10185
10186 if (!rdev->coalesce->n_rules)
10187 return 0;
10188
10189 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10190 if (!nl_rules)
10191 return -ENOBUFS;
10192
10193 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10194 nl_rule = nla_nest_start(msg, i + 1);
10195 if (!nl_rule)
10196 return -ENOBUFS;
10197
10198 rule = &rdev->coalesce->rules[i];
10199 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10200 rule->delay))
10201 return -ENOBUFS;
10202
10203 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10204 rule->condition))
10205 return -ENOBUFS;
10206
10207 nl_pats = nla_nest_start(msg,
10208 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10209 if (!nl_pats)
10210 return -ENOBUFS;
10211
10212 for (j = 0; j < rule->n_patterns; j++) {
10213 nl_pat = nla_nest_start(msg, j + 1);
10214 if (!nl_pat)
10215 return -ENOBUFS;
10216 pat_len = rule->patterns[j].pattern_len;
10217 if (nla_put(msg, NL80211_PKTPAT_MASK,
10218 DIV_ROUND_UP(pat_len, 8),
10219 rule->patterns[j].mask) ||
10220 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10221 rule->patterns[j].pattern) ||
10222 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10223 rule->patterns[j].pkt_offset))
10224 return -ENOBUFS;
10225 nla_nest_end(msg, nl_pat);
10226 }
10227 nla_nest_end(msg, nl_pats);
10228 nla_nest_end(msg, nl_rule);
10229 }
10230 nla_nest_end(msg, nl_rules);
10231
10232 return 0;
10233 }
10234
10235 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10236 {
10237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10238 struct sk_buff *msg;
10239 void *hdr;
10240
10241 if (!rdev->wiphy.coalesce)
10242 return -EOPNOTSUPP;
10243
10244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10245 if (!msg)
10246 return -ENOMEM;
10247
10248 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10249 NL80211_CMD_GET_COALESCE);
10250 if (!hdr)
10251 goto nla_put_failure;
10252
10253 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10254 goto nla_put_failure;
10255
10256 genlmsg_end(msg, hdr);
10257 return genlmsg_reply(msg, info);
10258
10259 nla_put_failure:
10260 nlmsg_free(msg);
10261 return -ENOBUFS;
10262 }
10263
10264 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10265 {
10266 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10267 int i, j;
10268 struct cfg80211_coalesce_rules *rule;
10269
10270 if (!coalesce)
10271 return;
10272
10273 for (i = 0; i < coalesce->n_rules; i++) {
10274 rule = &coalesce->rules[i];
10275 for (j = 0; j < rule->n_patterns; j++)
10276 kfree(rule->patterns[j].mask);
10277 kfree(rule->patterns);
10278 }
10279 kfree(coalesce->rules);
10280 kfree(coalesce);
10281 rdev->coalesce = NULL;
10282 }
10283
10284 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10285 struct nlattr *rule,
10286 struct cfg80211_coalesce_rules *new_rule)
10287 {
10288 int err, i;
10289 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10290 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10291 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10292 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10293
10294 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10295 nl80211_coalesce_policy);
10296 if (err)
10297 return err;
10298
10299 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10300 new_rule->delay =
10301 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10302 if (new_rule->delay > coalesce->max_delay)
10303 return -EINVAL;
10304
10305 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10306 new_rule->condition =
10307 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10308 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10309 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10310 return -EINVAL;
10311
10312 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10313 return -EINVAL;
10314
10315 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10316 rem)
10317 n_patterns++;
10318 if (n_patterns > coalesce->n_patterns)
10319 return -EINVAL;
10320
10321 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10322 GFP_KERNEL);
10323 if (!new_rule->patterns)
10324 return -ENOMEM;
10325
10326 new_rule->n_patterns = n_patterns;
10327 i = 0;
10328
10329 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10330 rem) {
10331 u8 *mask_pat;
10332
10333 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10334 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10335 !pat_tb[NL80211_PKTPAT_PATTERN])
10336 return -EINVAL;
10337 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10338 mask_len = DIV_ROUND_UP(pat_len, 8);
10339 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10340 return -EINVAL;
10341 if (pat_len > coalesce->pattern_max_len ||
10342 pat_len < coalesce->pattern_min_len)
10343 return -EINVAL;
10344
10345 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10346 pkt_offset = 0;
10347 else
10348 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10349 if (pkt_offset > coalesce->max_pkt_offset)
10350 return -EINVAL;
10351 new_rule->patterns[i].pkt_offset = pkt_offset;
10352
10353 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10354 if (!mask_pat)
10355 return -ENOMEM;
10356
10357 new_rule->patterns[i].mask = mask_pat;
10358 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10359 mask_len);
10360
10361 mask_pat += mask_len;
10362 new_rule->patterns[i].pattern = mask_pat;
10363 new_rule->patterns[i].pattern_len = pat_len;
10364 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10365 pat_len);
10366 i++;
10367 }
10368
10369 return 0;
10370 }
10371
10372 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10373 {
10374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10375 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10376 struct cfg80211_coalesce new_coalesce = {};
10377 struct cfg80211_coalesce *n_coalesce;
10378 int err, rem_rule, n_rules = 0, i, j;
10379 struct nlattr *rule;
10380 struct cfg80211_coalesce_rules *tmp_rule;
10381
10382 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10383 return -EOPNOTSUPP;
10384
10385 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10386 cfg80211_rdev_free_coalesce(rdev);
10387 rdev_set_coalesce(rdev, NULL);
10388 return 0;
10389 }
10390
10391 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10392 rem_rule)
10393 n_rules++;
10394 if (n_rules > coalesce->n_rules)
10395 return -EINVAL;
10396
10397 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10398 GFP_KERNEL);
10399 if (!new_coalesce.rules)
10400 return -ENOMEM;
10401
10402 new_coalesce.n_rules = n_rules;
10403 i = 0;
10404
10405 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10406 rem_rule) {
10407 err = nl80211_parse_coalesce_rule(rdev, rule,
10408 &new_coalesce.rules[i]);
10409 if (err)
10410 goto error;
10411
10412 i++;
10413 }
10414
10415 err = rdev_set_coalesce(rdev, &new_coalesce);
10416 if (err)
10417 goto error;
10418
10419 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10420 if (!n_coalesce) {
10421 err = -ENOMEM;
10422 goto error;
10423 }
10424 cfg80211_rdev_free_coalesce(rdev);
10425 rdev->coalesce = n_coalesce;
10426
10427 return 0;
10428 error:
10429 for (i = 0; i < new_coalesce.n_rules; i++) {
10430 tmp_rule = &new_coalesce.rules[i];
10431 for (j = 0; j < tmp_rule->n_patterns; j++)
10432 kfree(tmp_rule->patterns[j].mask);
10433 kfree(tmp_rule->patterns);
10434 }
10435 kfree(new_coalesce.rules);
10436
10437 return err;
10438 }
10439
10440 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10441 {
10442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10443 struct net_device *dev = info->user_ptr[1];
10444 struct wireless_dev *wdev = dev->ieee80211_ptr;
10445 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10446 struct cfg80211_gtk_rekey_data rekey_data;
10447 int err;
10448
10449 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10450 return -EINVAL;
10451
10452 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10453 info->attrs[NL80211_ATTR_REKEY_DATA],
10454 nl80211_rekey_policy);
10455 if (err)
10456 return err;
10457
10458 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10459 return -ERANGE;
10460 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10461 return -ERANGE;
10462 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10463 return -ERANGE;
10464
10465 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10466 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10467 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10468
10469 wdev_lock(wdev);
10470 if (!wdev->current_bss) {
10471 err = -ENOTCONN;
10472 goto out;
10473 }
10474
10475 if (!rdev->ops->set_rekey_data) {
10476 err = -EOPNOTSUPP;
10477 goto out;
10478 }
10479
10480 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10481 out:
10482 wdev_unlock(wdev);
10483 return err;
10484 }
10485
10486 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10487 struct genl_info *info)
10488 {
10489 struct net_device *dev = info->user_ptr[1];
10490 struct wireless_dev *wdev = dev->ieee80211_ptr;
10491
10492 if (wdev->iftype != NL80211_IFTYPE_AP &&
10493 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10494 return -EINVAL;
10495
10496 if (wdev->ap_unexpected_nlportid)
10497 return -EBUSY;
10498
10499 wdev->ap_unexpected_nlportid = info->snd_portid;
10500 return 0;
10501 }
10502
10503 static int nl80211_probe_client(struct sk_buff *skb,
10504 struct genl_info *info)
10505 {
10506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10507 struct net_device *dev = info->user_ptr[1];
10508 struct wireless_dev *wdev = dev->ieee80211_ptr;
10509 struct sk_buff *msg;
10510 void *hdr;
10511 const u8 *addr;
10512 u64 cookie;
10513 int err;
10514
10515 if (wdev->iftype != NL80211_IFTYPE_AP &&
10516 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10517 return -EOPNOTSUPP;
10518
10519 if (!info->attrs[NL80211_ATTR_MAC])
10520 return -EINVAL;
10521
10522 if (!rdev->ops->probe_client)
10523 return -EOPNOTSUPP;
10524
10525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10526 if (!msg)
10527 return -ENOMEM;
10528
10529 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10530 NL80211_CMD_PROBE_CLIENT);
10531 if (!hdr) {
10532 err = -ENOBUFS;
10533 goto free_msg;
10534 }
10535
10536 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10537
10538 err = rdev_probe_client(rdev, dev, addr, &cookie);
10539 if (err)
10540 goto free_msg;
10541
10542 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10543 NL80211_ATTR_PAD))
10544 goto nla_put_failure;
10545
10546 genlmsg_end(msg, hdr);
10547
10548 return genlmsg_reply(msg, info);
10549
10550 nla_put_failure:
10551 err = -ENOBUFS;
10552 free_msg:
10553 nlmsg_free(msg);
10554 return err;
10555 }
10556
10557 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10558 {
10559 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10560 struct cfg80211_beacon_registration *reg, *nreg;
10561 int rv;
10562
10563 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10564 return -EOPNOTSUPP;
10565
10566 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10567 if (!nreg)
10568 return -ENOMEM;
10569
10570 /* First, check if already registered. */
10571 spin_lock_bh(&rdev->beacon_registrations_lock);
10572 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10573 if (reg->nlportid == info->snd_portid) {
10574 rv = -EALREADY;
10575 goto out_err;
10576 }
10577 }
10578 /* Add it to the list */
10579 nreg->nlportid = info->snd_portid;
10580 list_add(&nreg->list, &rdev->beacon_registrations);
10581
10582 spin_unlock_bh(&rdev->beacon_registrations_lock);
10583
10584 return 0;
10585 out_err:
10586 spin_unlock_bh(&rdev->beacon_registrations_lock);
10587 kfree(nreg);
10588 return rv;
10589 }
10590
10591 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10592 {
10593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10594 struct wireless_dev *wdev = info->user_ptr[1];
10595 int err;
10596
10597 if (!rdev->ops->start_p2p_device)
10598 return -EOPNOTSUPP;
10599
10600 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10601 return -EOPNOTSUPP;
10602
10603 if (wdev_running(wdev))
10604 return 0;
10605
10606 if (rfkill_blocked(rdev->rfkill))
10607 return -ERFKILL;
10608
10609 err = rdev_start_p2p_device(rdev, wdev);
10610 if (err)
10611 return err;
10612
10613 wdev->is_running = true;
10614 rdev->opencount++;
10615
10616 return 0;
10617 }
10618
10619 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10620 {
10621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10622 struct wireless_dev *wdev = info->user_ptr[1];
10623
10624 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10625 return -EOPNOTSUPP;
10626
10627 if (!rdev->ops->stop_p2p_device)
10628 return -EOPNOTSUPP;
10629
10630 cfg80211_stop_p2p_device(rdev, wdev);
10631
10632 return 0;
10633 }
10634
10635 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10636 {
10637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10638 struct wireless_dev *wdev = info->user_ptr[1];
10639 struct cfg80211_nan_conf conf = {};
10640 int err;
10641
10642 if (wdev->iftype != NL80211_IFTYPE_NAN)
10643 return -EOPNOTSUPP;
10644
10645 if (wdev_running(wdev))
10646 return -EEXIST;
10647
10648 if (rfkill_blocked(rdev->rfkill))
10649 return -ERFKILL;
10650
10651 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10652 return -EINVAL;
10653
10654 if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10655 return -EINVAL;
10656
10657 conf.master_pref =
10658 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10659 if (!conf.master_pref)
10660 return -EINVAL;
10661
10662 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10663
10664 err = rdev_start_nan(rdev, wdev, &conf);
10665 if (err)
10666 return err;
10667
10668 wdev->is_running = true;
10669 rdev->opencount++;
10670
10671 return 0;
10672 }
10673
10674 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10675 {
10676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10677 struct wireless_dev *wdev = info->user_ptr[1];
10678
10679 if (wdev->iftype != NL80211_IFTYPE_NAN)
10680 return -EOPNOTSUPP;
10681
10682 cfg80211_stop_nan(rdev, wdev);
10683
10684 return 0;
10685 }
10686
10687 static int validate_nan_filter(struct nlattr *filter_attr)
10688 {
10689 struct nlattr *attr;
10690 int len = 0, n_entries = 0, rem;
10691
10692 nla_for_each_nested(attr, filter_attr, rem) {
10693 len += nla_len(attr);
10694 n_entries++;
10695 }
10696
10697 if (len >= U8_MAX)
10698 return -EINVAL;
10699
10700 return n_entries;
10701 }
10702
10703 static int handle_nan_filter(struct nlattr *attr_filter,
10704 struct cfg80211_nan_func *func,
10705 bool tx)
10706 {
10707 struct nlattr *attr;
10708 int n_entries, rem, i;
10709 struct cfg80211_nan_func_filter *filter;
10710
10711 n_entries = validate_nan_filter(attr_filter);
10712 if (n_entries < 0)
10713 return n_entries;
10714
10715 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10716
10717 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10718 if (!filter)
10719 return -ENOMEM;
10720
10721 i = 0;
10722 nla_for_each_nested(attr, attr_filter, rem) {
10723 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10724 filter[i].len = nla_len(attr);
10725 i++;
10726 }
10727 if (tx) {
10728 func->num_tx_filters = n_entries;
10729 func->tx_filters = filter;
10730 } else {
10731 func->num_rx_filters = n_entries;
10732 func->rx_filters = filter;
10733 }
10734
10735 return 0;
10736 }
10737
10738 static int nl80211_nan_add_func(struct sk_buff *skb,
10739 struct genl_info *info)
10740 {
10741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10742 struct wireless_dev *wdev = info->user_ptr[1];
10743 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10744 struct cfg80211_nan_func *func;
10745 struct sk_buff *msg = NULL;
10746 void *hdr = NULL;
10747 int err = 0;
10748
10749 if (wdev->iftype != NL80211_IFTYPE_NAN)
10750 return -EOPNOTSUPP;
10751
10752 if (!wdev_running(wdev))
10753 return -ENOTCONN;
10754
10755 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10756 return -EINVAL;
10757
10758 if (wdev->owner_nlportid &&
10759 wdev->owner_nlportid != info->snd_portid)
10760 return -ENOTCONN;
10761
10762 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10763 info->attrs[NL80211_ATTR_NAN_FUNC],
10764 nl80211_nan_func_policy);
10765 if (err)
10766 return err;
10767
10768 func = kzalloc(sizeof(*func), GFP_KERNEL);
10769 if (!func)
10770 return -ENOMEM;
10771
10772 func->cookie = wdev->wiphy->cookie_counter++;
10773
10774 if (!tb[NL80211_NAN_FUNC_TYPE] ||
10775 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10776 err = -EINVAL;
10777 goto out;
10778 }
10779
10780
10781 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10782
10783 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10784 err = -EINVAL;
10785 goto out;
10786 }
10787
10788 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10789 sizeof(func->service_id));
10790
10791 func->close_range =
10792 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10793
10794 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10795 func->serv_spec_info_len =
10796 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10797 func->serv_spec_info =
10798 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10799 func->serv_spec_info_len,
10800 GFP_KERNEL);
10801 if (!func->serv_spec_info) {
10802 err = -ENOMEM;
10803 goto out;
10804 }
10805 }
10806
10807 if (tb[NL80211_NAN_FUNC_TTL])
10808 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10809
10810 switch (func->type) {
10811 case NL80211_NAN_FUNC_PUBLISH:
10812 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10813 err = -EINVAL;
10814 goto out;
10815 }
10816
10817 func->publish_type =
10818 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10819 func->publish_bcast =
10820 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10821
10822 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10823 func->publish_bcast) {
10824 err = -EINVAL;
10825 goto out;
10826 }
10827 break;
10828 case NL80211_NAN_FUNC_SUBSCRIBE:
10829 func->subscribe_active =
10830 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10831 break;
10832 case NL80211_NAN_FUNC_FOLLOW_UP:
10833 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10834 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10835 err = -EINVAL;
10836 goto out;
10837 }
10838
10839 func->followup_id =
10840 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10841 func->followup_reqid =
10842 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10843 memcpy(func->followup_dest.addr,
10844 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10845 sizeof(func->followup_dest.addr));
10846 if (func->ttl) {
10847 err = -EINVAL;
10848 goto out;
10849 }
10850 break;
10851 default:
10852 err = -EINVAL;
10853 goto out;
10854 }
10855
10856 if (tb[NL80211_NAN_FUNC_SRF]) {
10857 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10858
10859 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10860 tb[NL80211_NAN_FUNC_SRF],
10861 nl80211_nan_srf_policy);
10862 if (err)
10863 goto out;
10864
10865 func->srf_include =
10866 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10867
10868 if (srf_tb[NL80211_NAN_SRF_BF]) {
10869 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10870 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10871 err = -EINVAL;
10872 goto out;
10873 }
10874
10875 func->srf_bf_len =
10876 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10877 func->srf_bf =
10878 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10879 func->srf_bf_len, GFP_KERNEL);
10880 if (!func->srf_bf) {
10881 err = -ENOMEM;
10882 goto out;
10883 }
10884
10885 func->srf_bf_idx =
10886 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10887 } else {
10888 struct nlattr *attr, *mac_attr =
10889 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10890 int n_entries, rem, i = 0;
10891
10892 if (!mac_attr) {
10893 err = -EINVAL;
10894 goto out;
10895 }
10896
10897 n_entries = validate_acl_mac_addrs(mac_attr);
10898 if (n_entries <= 0) {
10899 err = -EINVAL;
10900 goto out;
10901 }
10902
10903 func->srf_num_macs = n_entries;
10904 func->srf_macs =
10905 kzalloc(sizeof(*func->srf_macs) * n_entries,
10906 GFP_KERNEL);
10907 if (!func->srf_macs) {
10908 err = -ENOMEM;
10909 goto out;
10910 }
10911
10912 nla_for_each_nested(attr, mac_attr, rem)
10913 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10914 sizeof(*func->srf_macs));
10915 }
10916 }
10917
10918 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10919 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10920 func, true);
10921 if (err)
10922 goto out;
10923 }
10924
10925 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10926 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10927 func, false);
10928 if (err)
10929 goto out;
10930 }
10931
10932 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10933 if (!msg) {
10934 err = -ENOMEM;
10935 goto out;
10936 }
10937
10938 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10939 NL80211_CMD_ADD_NAN_FUNCTION);
10940 /* This can't really happen - we just allocated 4KB */
10941 if (WARN_ON(!hdr)) {
10942 err = -ENOMEM;
10943 goto out;
10944 }
10945
10946 err = rdev_add_nan_func(rdev, wdev, func);
10947 out:
10948 if (err < 0) {
10949 cfg80211_free_nan_func(func);
10950 nlmsg_free(msg);
10951 return err;
10952 }
10953
10954 /* propagate the instance id and cookie to userspace */
10955 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10956 NL80211_ATTR_PAD))
10957 goto nla_put_failure;
10958
10959 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10960 if (!func_attr)
10961 goto nla_put_failure;
10962
10963 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10964 func->instance_id))
10965 goto nla_put_failure;
10966
10967 nla_nest_end(msg, func_attr);
10968
10969 genlmsg_end(msg, hdr);
10970 return genlmsg_reply(msg, info);
10971
10972 nla_put_failure:
10973 nlmsg_free(msg);
10974 return -ENOBUFS;
10975 }
10976
10977 static int nl80211_nan_del_func(struct sk_buff *skb,
10978 struct genl_info *info)
10979 {
10980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10981 struct wireless_dev *wdev = info->user_ptr[1];
10982 u64 cookie;
10983
10984 if (wdev->iftype != NL80211_IFTYPE_NAN)
10985 return -EOPNOTSUPP;
10986
10987 if (!wdev_running(wdev))
10988 return -ENOTCONN;
10989
10990 if (!info->attrs[NL80211_ATTR_COOKIE])
10991 return -EINVAL;
10992
10993 if (wdev->owner_nlportid &&
10994 wdev->owner_nlportid != info->snd_portid)
10995 return -ENOTCONN;
10996
10997 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10998
10999 rdev_del_nan_func(rdev, wdev, cookie);
11000
11001 return 0;
11002 }
11003
11004 static int nl80211_nan_change_config(struct sk_buff *skb,
11005 struct genl_info *info)
11006 {
11007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11008 struct wireless_dev *wdev = info->user_ptr[1];
11009 struct cfg80211_nan_conf conf = {};
11010 u32 changed = 0;
11011
11012 if (wdev->iftype != NL80211_IFTYPE_NAN)
11013 return -EOPNOTSUPP;
11014
11015 if (!wdev_running(wdev))
11016 return -ENOTCONN;
11017
11018 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11019 conf.master_pref =
11020 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11021 if (conf.master_pref <= 1 || conf.master_pref == 255)
11022 return -EINVAL;
11023
11024 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11025 }
11026
11027 if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11028 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11029 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11030 }
11031
11032 if (!changed)
11033 return -EINVAL;
11034
11035 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11036 }
11037
11038 void cfg80211_nan_match(struct wireless_dev *wdev,
11039 struct cfg80211_nan_match_params *match, gfp_t gfp)
11040 {
11041 struct wiphy *wiphy = wdev->wiphy;
11042 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11043 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11044 struct sk_buff *msg;
11045 void *hdr;
11046
11047 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11048 return;
11049
11050 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11051 if (!msg)
11052 return;
11053
11054 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11055 if (!hdr) {
11056 nlmsg_free(msg);
11057 return;
11058 }
11059
11060 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11061 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11062 wdev->netdev->ifindex)) ||
11063 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11064 NL80211_ATTR_PAD))
11065 goto nla_put_failure;
11066
11067 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11068 NL80211_ATTR_PAD) ||
11069 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11070 goto nla_put_failure;
11071
11072 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11073 if (!match_attr)
11074 goto nla_put_failure;
11075
11076 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11077 if (!local_func_attr)
11078 goto nla_put_failure;
11079
11080 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11081 goto nla_put_failure;
11082
11083 nla_nest_end(msg, local_func_attr);
11084
11085 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11086 if (!peer_func_attr)
11087 goto nla_put_failure;
11088
11089 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11090 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11091 goto nla_put_failure;
11092
11093 if (match->info && match->info_len &&
11094 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11095 match->info))
11096 goto nla_put_failure;
11097
11098 nla_nest_end(msg, peer_func_attr);
11099 nla_nest_end(msg, match_attr);
11100 genlmsg_end(msg, hdr);
11101
11102 if (!wdev->owner_nlportid)
11103 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11104 msg, 0, NL80211_MCGRP_NAN, gfp);
11105 else
11106 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11107 wdev->owner_nlportid);
11108
11109 return;
11110
11111 nla_put_failure:
11112 nlmsg_free(msg);
11113 }
11114 EXPORT_SYMBOL(cfg80211_nan_match);
11115
11116 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11117 u8 inst_id,
11118 enum nl80211_nan_func_term_reason reason,
11119 u64 cookie, gfp_t gfp)
11120 {
11121 struct wiphy *wiphy = wdev->wiphy;
11122 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11123 struct sk_buff *msg;
11124 struct nlattr *func_attr;
11125 void *hdr;
11126
11127 if (WARN_ON(!inst_id))
11128 return;
11129
11130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11131 if (!msg)
11132 return;
11133
11134 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11135 if (!hdr) {
11136 nlmsg_free(msg);
11137 return;
11138 }
11139
11140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11141 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11142 wdev->netdev->ifindex)) ||
11143 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11144 NL80211_ATTR_PAD))
11145 goto nla_put_failure;
11146
11147 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11148 NL80211_ATTR_PAD))
11149 goto nla_put_failure;
11150
11151 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11152 if (!func_attr)
11153 goto nla_put_failure;
11154
11155 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11156 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11157 goto nla_put_failure;
11158
11159 nla_nest_end(msg, func_attr);
11160 genlmsg_end(msg, hdr);
11161
11162 if (!wdev->owner_nlportid)
11163 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11164 msg, 0, NL80211_MCGRP_NAN, gfp);
11165 else
11166 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11167 wdev->owner_nlportid);
11168
11169 return;
11170
11171 nla_put_failure:
11172 nlmsg_free(msg);
11173 }
11174 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11175
11176 static int nl80211_get_protocol_features(struct sk_buff *skb,
11177 struct genl_info *info)
11178 {
11179 void *hdr;
11180 struct sk_buff *msg;
11181
11182 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11183 if (!msg)
11184 return -ENOMEM;
11185
11186 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11187 NL80211_CMD_GET_PROTOCOL_FEATURES);
11188 if (!hdr)
11189 goto nla_put_failure;
11190
11191 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11192 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11193 goto nla_put_failure;
11194
11195 genlmsg_end(msg, hdr);
11196 return genlmsg_reply(msg, info);
11197
11198 nla_put_failure:
11199 kfree_skb(msg);
11200 return -ENOBUFS;
11201 }
11202
11203 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11204 {
11205 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11206 struct cfg80211_update_ft_ies_params ft_params;
11207 struct net_device *dev = info->user_ptr[1];
11208
11209 if (!rdev->ops->update_ft_ies)
11210 return -EOPNOTSUPP;
11211
11212 if (!info->attrs[NL80211_ATTR_MDID] ||
11213 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11214 return -EINVAL;
11215
11216 memset(&ft_params, 0, sizeof(ft_params));
11217 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11218 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11219 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11220
11221 return rdev_update_ft_ies(rdev, dev, &ft_params);
11222 }
11223
11224 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11225 struct genl_info *info)
11226 {
11227 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11228 struct wireless_dev *wdev = info->user_ptr[1];
11229 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11230 u16 duration;
11231 int ret;
11232
11233 if (!rdev->ops->crit_proto_start)
11234 return -EOPNOTSUPP;
11235
11236 if (WARN_ON(!rdev->ops->crit_proto_stop))
11237 return -EINVAL;
11238
11239 if (rdev->crit_proto_nlportid)
11240 return -EBUSY;
11241
11242 /* determine protocol if provided */
11243 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11244 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11245
11246 if (proto >= NUM_NL80211_CRIT_PROTO)
11247 return -EINVAL;
11248
11249 /* timeout must be provided */
11250 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11251 return -EINVAL;
11252
11253 duration =
11254 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11255
11256 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11257 return -ERANGE;
11258
11259 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11260 if (!ret)
11261 rdev->crit_proto_nlportid = info->snd_portid;
11262
11263 return ret;
11264 }
11265
11266 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11267 struct genl_info *info)
11268 {
11269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11270 struct wireless_dev *wdev = info->user_ptr[1];
11271
11272 if (!rdev->ops->crit_proto_stop)
11273 return -EOPNOTSUPP;
11274
11275 if (rdev->crit_proto_nlportid) {
11276 rdev->crit_proto_nlportid = 0;
11277 rdev_crit_proto_stop(rdev, wdev);
11278 }
11279 return 0;
11280 }
11281
11282 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11283 {
11284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11285 struct wireless_dev *wdev =
11286 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11287 int i, err;
11288 u32 vid, subcmd;
11289
11290 if (!rdev->wiphy.vendor_commands)
11291 return -EOPNOTSUPP;
11292
11293 if (IS_ERR(wdev)) {
11294 err = PTR_ERR(wdev);
11295 if (err != -EINVAL)
11296 return err;
11297 wdev = NULL;
11298 } else if (wdev->wiphy != &rdev->wiphy) {
11299 return -EINVAL;
11300 }
11301
11302 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11303 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11304 return -EINVAL;
11305
11306 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11307 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11308 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11309 const struct wiphy_vendor_command *vcmd;
11310 void *data = NULL;
11311 int len = 0;
11312
11313 vcmd = &rdev->wiphy.vendor_commands[i];
11314
11315 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11316 continue;
11317
11318 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11319 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11320 if (!wdev)
11321 return -EINVAL;
11322 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11323 !wdev->netdev)
11324 return -EINVAL;
11325
11326 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11327 if (!wdev_running(wdev))
11328 return -ENETDOWN;
11329 }
11330
11331 if (!vcmd->doit)
11332 return -EOPNOTSUPP;
11333 } else {
11334 wdev = NULL;
11335 }
11336
11337 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11338 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11339 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11340 }
11341
11342 rdev->cur_cmd_info = info;
11343 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11344 data, len);
11345 rdev->cur_cmd_info = NULL;
11346 return err;
11347 }
11348
11349 return -EOPNOTSUPP;
11350 }
11351
11352 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11353 struct netlink_callback *cb,
11354 struct cfg80211_registered_device **rdev,
11355 struct wireless_dev **wdev)
11356 {
11357 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11358 u32 vid, subcmd;
11359 unsigned int i;
11360 int vcmd_idx = -1;
11361 int err;
11362 void *data = NULL;
11363 unsigned int data_len = 0;
11364
11365 rtnl_lock();
11366
11367 if (cb->args[0]) {
11368 /* subtract the 1 again here */
11369 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11370 struct wireless_dev *tmp;
11371
11372 if (!wiphy) {
11373 err = -ENODEV;
11374 goto out_unlock;
11375 }
11376 *rdev = wiphy_to_rdev(wiphy);
11377 *wdev = NULL;
11378
11379 if (cb->args[1]) {
11380 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11381 if (tmp->identifier == cb->args[1] - 1) {
11382 *wdev = tmp;
11383 break;
11384 }
11385 }
11386 }
11387
11388 /* keep rtnl locked in successful case */
11389 return 0;
11390 }
11391
11392 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11393 attrbuf, nl80211_fam.maxattr, nl80211_policy);
11394 if (err)
11395 goto out_unlock;
11396
11397 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11398 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11399 err = -EINVAL;
11400 goto out_unlock;
11401 }
11402
11403 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11404 if (IS_ERR(*wdev))
11405 *wdev = NULL;
11406
11407 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11408 if (IS_ERR(*rdev)) {
11409 err = PTR_ERR(*rdev);
11410 goto out_unlock;
11411 }
11412
11413 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11414 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11415
11416 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11417 const struct wiphy_vendor_command *vcmd;
11418
11419 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11420
11421 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11422 continue;
11423
11424 if (!vcmd->dumpit) {
11425 err = -EOPNOTSUPP;
11426 goto out_unlock;
11427 }
11428
11429 vcmd_idx = i;
11430 break;
11431 }
11432
11433 if (vcmd_idx < 0) {
11434 err = -EOPNOTSUPP;
11435 goto out_unlock;
11436 }
11437
11438 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11439 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11440 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11441 }
11442
11443 /* 0 is the first index - add 1 to parse only once */
11444 cb->args[0] = (*rdev)->wiphy_idx + 1;
11445 /* add 1 to know if it was NULL */
11446 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11447 cb->args[2] = vcmd_idx;
11448 cb->args[3] = (unsigned long)data;
11449 cb->args[4] = data_len;
11450
11451 /* keep rtnl locked in successful case */
11452 return 0;
11453 out_unlock:
11454 rtnl_unlock();
11455 return err;
11456 }
11457
11458 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11459 struct netlink_callback *cb)
11460 {
11461 struct cfg80211_registered_device *rdev;
11462 struct wireless_dev *wdev;
11463 unsigned int vcmd_idx;
11464 const struct wiphy_vendor_command *vcmd;
11465 void *data;
11466 int data_len;
11467 int err;
11468 struct nlattr *vendor_data;
11469
11470 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11471 if (err)
11472 return err;
11473
11474 vcmd_idx = cb->args[2];
11475 data = (void *)cb->args[3];
11476 data_len = cb->args[4];
11477 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11478
11479 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11480 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11481 if (!wdev)
11482 return -EINVAL;
11483 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11484 !wdev->netdev)
11485 return -EINVAL;
11486
11487 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11488 if (!wdev_running(wdev))
11489 return -ENETDOWN;
11490 }
11491 }
11492
11493 while (1) {
11494 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11495 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11496 NL80211_CMD_VENDOR);
11497 if (!hdr)
11498 break;
11499
11500 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11501 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11502 wdev_id(wdev),
11503 NL80211_ATTR_PAD))) {
11504 genlmsg_cancel(skb, hdr);
11505 break;
11506 }
11507
11508 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11509 if (!vendor_data) {
11510 genlmsg_cancel(skb, hdr);
11511 break;
11512 }
11513
11514 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11515 (unsigned long *)&cb->args[5]);
11516 nla_nest_end(skb, vendor_data);
11517
11518 if (err == -ENOBUFS || err == -ENOENT) {
11519 genlmsg_cancel(skb, hdr);
11520 break;
11521 } else if (err) {
11522 genlmsg_cancel(skb, hdr);
11523 goto out;
11524 }
11525
11526 genlmsg_end(skb, hdr);
11527 }
11528
11529 err = skb->len;
11530 out:
11531 rtnl_unlock();
11532 return err;
11533 }
11534
11535 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11536 enum nl80211_commands cmd,
11537 enum nl80211_attrs attr,
11538 int approxlen)
11539 {
11540 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11541
11542 if (WARN_ON(!rdev->cur_cmd_info))
11543 return NULL;
11544
11545 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11546 rdev->cur_cmd_info->snd_portid,
11547 rdev->cur_cmd_info->snd_seq,
11548 cmd, attr, NULL, GFP_KERNEL);
11549 }
11550 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11551
11552 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11553 {
11554 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11555 void *hdr = ((void **)skb->cb)[1];
11556 struct nlattr *data = ((void **)skb->cb)[2];
11557
11558 /* clear CB data for netlink core to own from now on */
11559 memset(skb->cb, 0, sizeof(skb->cb));
11560
11561 if (WARN_ON(!rdev->cur_cmd_info)) {
11562 kfree_skb(skb);
11563 return -EINVAL;
11564 }
11565
11566 nla_nest_end(skb, data);
11567 genlmsg_end(skb, hdr);
11568 return genlmsg_reply(skb, rdev->cur_cmd_info);
11569 }
11570 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11571
11572 static int nl80211_set_qos_map(struct sk_buff *skb,
11573 struct genl_info *info)
11574 {
11575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11576 struct cfg80211_qos_map *qos_map = NULL;
11577 struct net_device *dev = info->user_ptr[1];
11578 u8 *pos, len, num_des, des_len, des;
11579 int ret;
11580
11581 if (!rdev->ops->set_qos_map)
11582 return -EOPNOTSUPP;
11583
11584 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11585 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11586 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11587
11588 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11589 len > IEEE80211_QOS_MAP_LEN_MAX)
11590 return -EINVAL;
11591
11592 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11593 if (!qos_map)
11594 return -ENOMEM;
11595
11596 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11597 if (num_des) {
11598 des_len = num_des *
11599 sizeof(struct cfg80211_dscp_exception);
11600 memcpy(qos_map->dscp_exception, pos, des_len);
11601 qos_map->num_des = num_des;
11602 for (des = 0; des < num_des; des++) {
11603 if (qos_map->dscp_exception[des].up > 7) {
11604 kfree(qos_map);
11605 return -EINVAL;
11606 }
11607 }
11608 pos += des_len;
11609 }
11610 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11611 }
11612
11613 wdev_lock(dev->ieee80211_ptr);
11614 ret = nl80211_key_allowed(dev->ieee80211_ptr);
11615 if (!ret)
11616 ret = rdev_set_qos_map(rdev, dev, qos_map);
11617 wdev_unlock(dev->ieee80211_ptr);
11618
11619 kfree(qos_map);
11620 return ret;
11621 }
11622
11623 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11624 {
11625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11626 struct net_device *dev = info->user_ptr[1];
11627 struct wireless_dev *wdev = dev->ieee80211_ptr;
11628 const u8 *peer;
11629 u8 tsid, up;
11630 u16 admitted_time = 0;
11631 int err;
11632
11633 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11634 return -EOPNOTSUPP;
11635
11636 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11637 !info->attrs[NL80211_ATTR_USER_PRIO])
11638 return -EINVAL;
11639
11640 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11641 if (tsid >= IEEE80211_NUM_TIDS)
11642 return -EINVAL;
11643
11644 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11645 if (up >= IEEE80211_NUM_UPS)
11646 return -EINVAL;
11647
11648 /* WMM uses TIDs 0-7 even for TSPEC */
11649 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11650 /* TODO: handle 802.11 TSPEC/admission control
11651 * need more attributes for that (e.g. BA session requirement);
11652 * change the WMM adminssion test above to allow both then
11653 */
11654 return -EINVAL;
11655 }
11656
11657 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11658
11659 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11660 admitted_time =
11661 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11662 if (!admitted_time)
11663 return -EINVAL;
11664 }
11665
11666 wdev_lock(wdev);
11667 switch (wdev->iftype) {
11668 case NL80211_IFTYPE_STATION:
11669 case NL80211_IFTYPE_P2P_CLIENT:
11670 if (wdev->current_bss)
11671 break;
11672 err = -ENOTCONN;
11673 goto out;
11674 default:
11675 err = -EOPNOTSUPP;
11676 goto out;
11677 }
11678
11679 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11680
11681 out:
11682 wdev_unlock(wdev);
11683 return err;
11684 }
11685
11686 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11687 {
11688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11689 struct net_device *dev = info->user_ptr[1];
11690 struct wireless_dev *wdev = dev->ieee80211_ptr;
11691 const u8 *peer;
11692 u8 tsid;
11693 int err;
11694
11695 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11696 return -EINVAL;
11697
11698 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11699 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11700
11701 wdev_lock(wdev);
11702 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11703 wdev_unlock(wdev);
11704
11705 return err;
11706 }
11707
11708 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11709 struct genl_info *info)
11710 {
11711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11712 struct net_device *dev = info->user_ptr[1];
11713 struct wireless_dev *wdev = dev->ieee80211_ptr;
11714 struct cfg80211_chan_def chandef = {};
11715 const u8 *addr;
11716 u8 oper_class;
11717 int err;
11718
11719 if (!rdev->ops->tdls_channel_switch ||
11720 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11721 return -EOPNOTSUPP;
11722
11723 switch (dev->ieee80211_ptr->iftype) {
11724 case NL80211_IFTYPE_STATION:
11725 case NL80211_IFTYPE_P2P_CLIENT:
11726 break;
11727 default:
11728 return -EOPNOTSUPP;
11729 }
11730
11731 if (!info->attrs[NL80211_ATTR_MAC] ||
11732 !info->attrs[NL80211_ATTR_OPER_CLASS])
11733 return -EINVAL;
11734
11735 err = nl80211_parse_chandef(rdev, info, &chandef);
11736 if (err)
11737 return err;
11738
11739 /*
11740 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11741 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11742 * specification is not defined for them.
11743 */
11744 if (chandef.chan->band == NL80211_BAND_2GHZ &&
11745 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11746 chandef.width != NL80211_CHAN_WIDTH_20)
11747 return -EINVAL;
11748
11749 /* we will be active on the TDLS link */
11750 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11751 wdev->iftype))
11752 return -EINVAL;
11753
11754 /* don't allow switching to DFS channels */
11755 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11756 return -EINVAL;
11757
11758 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11759 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11760
11761 wdev_lock(wdev);
11762 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11763 wdev_unlock(wdev);
11764
11765 return err;
11766 }
11767
11768 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11769 struct genl_info *info)
11770 {
11771 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11772 struct net_device *dev = info->user_ptr[1];
11773 struct wireless_dev *wdev = dev->ieee80211_ptr;
11774 const u8 *addr;
11775
11776 if (!rdev->ops->tdls_channel_switch ||
11777 !rdev->ops->tdls_cancel_channel_switch ||
11778 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11779 return -EOPNOTSUPP;
11780
11781 switch (dev->ieee80211_ptr->iftype) {
11782 case NL80211_IFTYPE_STATION:
11783 case NL80211_IFTYPE_P2P_CLIENT:
11784 break;
11785 default:
11786 return -EOPNOTSUPP;
11787 }
11788
11789 if (!info->attrs[NL80211_ATTR_MAC])
11790 return -EINVAL;
11791
11792 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11793
11794 wdev_lock(wdev);
11795 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11796 wdev_unlock(wdev);
11797
11798 return 0;
11799 }
11800
11801 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11802 struct genl_info *info)
11803 {
11804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11805 struct net_device *dev = info->user_ptr[1];
11806 struct wireless_dev *wdev = dev->ieee80211_ptr;
11807 const struct nlattr *nla;
11808 bool enabled;
11809
11810 if (netif_running(dev))
11811 return -EBUSY;
11812
11813 if (!rdev->ops->set_multicast_to_unicast)
11814 return -EOPNOTSUPP;
11815
11816 if (wdev->iftype != NL80211_IFTYPE_AP &&
11817 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11818 return -EOPNOTSUPP;
11819
11820 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11821 enabled = nla_get_flag(nla);
11822
11823 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11824 }
11825
11826 #define NL80211_FLAG_NEED_WIPHY 0x01
11827 #define NL80211_FLAG_NEED_NETDEV 0x02
11828 #define NL80211_FLAG_NEED_RTNL 0x04
11829 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11830 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11831 NL80211_FLAG_CHECK_NETDEV_UP)
11832 #define NL80211_FLAG_NEED_WDEV 0x10
11833 /* If a netdev is associated, it must be UP, P2P must be started */
11834 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11835 NL80211_FLAG_CHECK_NETDEV_UP)
11836 #define NL80211_FLAG_CLEAR_SKB 0x20
11837
11838 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11839 struct genl_info *info)
11840 {
11841 struct cfg80211_registered_device *rdev;
11842 struct wireless_dev *wdev;
11843 struct net_device *dev;
11844 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11845
11846 if (rtnl)
11847 rtnl_lock();
11848
11849 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11850 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11851 if (IS_ERR(rdev)) {
11852 if (rtnl)
11853 rtnl_unlock();
11854 return PTR_ERR(rdev);
11855 }
11856 info->user_ptr[0] = rdev;
11857 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11858 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11859 ASSERT_RTNL();
11860
11861 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11862 info->attrs);
11863 if (IS_ERR(wdev)) {
11864 if (rtnl)
11865 rtnl_unlock();
11866 return PTR_ERR(wdev);
11867 }
11868
11869 dev = wdev->netdev;
11870 rdev = wiphy_to_rdev(wdev->wiphy);
11871
11872 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11873 if (!dev) {
11874 if (rtnl)
11875 rtnl_unlock();
11876 return -EINVAL;
11877 }
11878
11879 info->user_ptr[1] = dev;
11880 } else {
11881 info->user_ptr[1] = wdev;
11882 }
11883
11884 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11885 !wdev_running(wdev)) {
11886 if (rtnl)
11887 rtnl_unlock();
11888 return -ENETDOWN;
11889 }
11890
11891 if (dev)
11892 dev_hold(dev);
11893
11894 info->user_ptr[0] = rdev;
11895 }
11896
11897 return 0;
11898 }
11899
11900 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11901 struct genl_info *info)
11902 {
11903 if (info->user_ptr[1]) {
11904 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11905 struct wireless_dev *wdev = info->user_ptr[1];
11906
11907 if (wdev->netdev)
11908 dev_put(wdev->netdev);
11909 } else {
11910 dev_put(info->user_ptr[1]);
11911 }
11912 }
11913
11914 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11915 rtnl_unlock();
11916
11917 /* If needed, clear the netlink message payload from the SKB
11918 * as it might contain key data that shouldn't stick around on
11919 * the heap after the SKB is freed. The netlink message header
11920 * is still needed for further processing, so leave it intact.
11921 */
11922 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11923 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11924
11925 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11926 }
11927 }
11928
11929 static const struct genl_ops nl80211_ops[] = {
11930 {
11931 .cmd = NL80211_CMD_GET_WIPHY,
11932 .doit = nl80211_get_wiphy,
11933 .dumpit = nl80211_dump_wiphy,
11934 .done = nl80211_dump_wiphy_done,
11935 .policy = nl80211_policy,
11936 /* can be retrieved by unprivileged users */
11937 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11938 NL80211_FLAG_NEED_RTNL,
11939 },
11940 {
11941 .cmd = NL80211_CMD_SET_WIPHY,
11942 .doit = nl80211_set_wiphy,
11943 .policy = nl80211_policy,
11944 .flags = GENL_UNS_ADMIN_PERM,
11945 .internal_flags = NL80211_FLAG_NEED_RTNL,
11946 },
11947 {
11948 .cmd = NL80211_CMD_GET_INTERFACE,
11949 .doit = nl80211_get_interface,
11950 .dumpit = nl80211_dump_interface,
11951 .policy = nl80211_policy,
11952 /* can be retrieved by unprivileged users */
11953 .internal_flags = NL80211_FLAG_NEED_WDEV |
11954 NL80211_FLAG_NEED_RTNL,
11955 },
11956 {
11957 .cmd = NL80211_CMD_SET_INTERFACE,
11958 .doit = nl80211_set_interface,
11959 .policy = nl80211_policy,
11960 .flags = GENL_UNS_ADMIN_PERM,
11961 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11962 NL80211_FLAG_NEED_RTNL,
11963 },
11964 {
11965 .cmd = NL80211_CMD_NEW_INTERFACE,
11966 .doit = nl80211_new_interface,
11967 .policy = nl80211_policy,
11968 .flags = GENL_UNS_ADMIN_PERM,
11969 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11970 NL80211_FLAG_NEED_RTNL,
11971 },
11972 {
11973 .cmd = NL80211_CMD_DEL_INTERFACE,
11974 .doit = nl80211_del_interface,
11975 .policy = nl80211_policy,
11976 .flags = GENL_UNS_ADMIN_PERM,
11977 .internal_flags = NL80211_FLAG_NEED_WDEV |
11978 NL80211_FLAG_NEED_RTNL,
11979 },
11980 {
11981 .cmd = NL80211_CMD_GET_KEY,
11982 .doit = nl80211_get_key,
11983 .policy = nl80211_policy,
11984 .flags = GENL_UNS_ADMIN_PERM,
11985 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11986 NL80211_FLAG_NEED_RTNL,
11987 },
11988 {
11989 .cmd = NL80211_CMD_SET_KEY,
11990 .doit = nl80211_set_key,
11991 .policy = nl80211_policy,
11992 .flags = GENL_UNS_ADMIN_PERM,
11993 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11994 NL80211_FLAG_NEED_RTNL |
11995 NL80211_FLAG_CLEAR_SKB,
11996 },
11997 {
11998 .cmd = NL80211_CMD_NEW_KEY,
11999 .doit = nl80211_new_key,
12000 .policy = nl80211_policy,
12001 .flags = GENL_UNS_ADMIN_PERM,
12002 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12003 NL80211_FLAG_NEED_RTNL |
12004 NL80211_FLAG_CLEAR_SKB,
12005 },
12006 {
12007 .cmd = NL80211_CMD_DEL_KEY,
12008 .doit = nl80211_del_key,
12009 .policy = nl80211_policy,
12010 .flags = GENL_UNS_ADMIN_PERM,
12011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12012 NL80211_FLAG_NEED_RTNL,
12013 },
12014 {
12015 .cmd = NL80211_CMD_SET_BEACON,
12016 .policy = nl80211_policy,
12017 .flags = GENL_UNS_ADMIN_PERM,
12018 .doit = nl80211_set_beacon,
12019 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12020 NL80211_FLAG_NEED_RTNL,
12021 },
12022 {
12023 .cmd = NL80211_CMD_START_AP,
12024 .policy = nl80211_policy,
12025 .flags = GENL_UNS_ADMIN_PERM,
12026 .doit = nl80211_start_ap,
12027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12028 NL80211_FLAG_NEED_RTNL,
12029 },
12030 {
12031 .cmd = NL80211_CMD_STOP_AP,
12032 .policy = nl80211_policy,
12033 .flags = GENL_UNS_ADMIN_PERM,
12034 .doit = nl80211_stop_ap,
12035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12036 NL80211_FLAG_NEED_RTNL,
12037 },
12038 {
12039 .cmd = NL80211_CMD_GET_STATION,
12040 .doit = nl80211_get_station,
12041 .dumpit = nl80211_dump_station,
12042 .policy = nl80211_policy,
12043 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12044 NL80211_FLAG_NEED_RTNL,
12045 },
12046 {
12047 .cmd = NL80211_CMD_SET_STATION,
12048 .doit = nl80211_set_station,
12049 .policy = nl80211_policy,
12050 .flags = GENL_UNS_ADMIN_PERM,
12051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12052 NL80211_FLAG_NEED_RTNL,
12053 },
12054 {
12055 .cmd = NL80211_CMD_NEW_STATION,
12056 .doit = nl80211_new_station,
12057 .policy = nl80211_policy,
12058 .flags = GENL_UNS_ADMIN_PERM,
12059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12060 NL80211_FLAG_NEED_RTNL,
12061 },
12062 {
12063 .cmd = NL80211_CMD_DEL_STATION,
12064 .doit = nl80211_del_station,
12065 .policy = nl80211_policy,
12066 .flags = GENL_UNS_ADMIN_PERM,
12067 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12068 NL80211_FLAG_NEED_RTNL,
12069 },
12070 {
12071 .cmd = NL80211_CMD_GET_MPATH,
12072 .doit = nl80211_get_mpath,
12073 .dumpit = nl80211_dump_mpath,
12074 .policy = nl80211_policy,
12075 .flags = GENL_UNS_ADMIN_PERM,
12076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12077 NL80211_FLAG_NEED_RTNL,
12078 },
12079 {
12080 .cmd = NL80211_CMD_GET_MPP,
12081 .doit = nl80211_get_mpp,
12082 .dumpit = nl80211_dump_mpp,
12083 .policy = nl80211_policy,
12084 .flags = GENL_UNS_ADMIN_PERM,
12085 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12086 NL80211_FLAG_NEED_RTNL,
12087 },
12088 {
12089 .cmd = NL80211_CMD_SET_MPATH,
12090 .doit = nl80211_set_mpath,
12091 .policy = nl80211_policy,
12092 .flags = GENL_UNS_ADMIN_PERM,
12093 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12094 NL80211_FLAG_NEED_RTNL,
12095 },
12096 {
12097 .cmd = NL80211_CMD_NEW_MPATH,
12098 .doit = nl80211_new_mpath,
12099 .policy = nl80211_policy,
12100 .flags = GENL_UNS_ADMIN_PERM,
12101 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12102 NL80211_FLAG_NEED_RTNL,
12103 },
12104 {
12105 .cmd = NL80211_CMD_DEL_MPATH,
12106 .doit = nl80211_del_mpath,
12107 .policy = nl80211_policy,
12108 .flags = GENL_UNS_ADMIN_PERM,
12109 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12110 NL80211_FLAG_NEED_RTNL,
12111 },
12112 {
12113 .cmd = NL80211_CMD_SET_BSS,
12114 .doit = nl80211_set_bss,
12115 .policy = nl80211_policy,
12116 .flags = GENL_UNS_ADMIN_PERM,
12117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12118 NL80211_FLAG_NEED_RTNL,
12119 },
12120 {
12121 .cmd = NL80211_CMD_GET_REG,
12122 .doit = nl80211_get_reg_do,
12123 .dumpit = nl80211_get_reg_dump,
12124 .policy = nl80211_policy,
12125 .internal_flags = NL80211_FLAG_NEED_RTNL,
12126 /* can be retrieved by unprivileged users */
12127 },
12128 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12129 {
12130 .cmd = NL80211_CMD_SET_REG,
12131 .doit = nl80211_set_reg,
12132 .policy = nl80211_policy,
12133 .flags = GENL_ADMIN_PERM,
12134 .internal_flags = NL80211_FLAG_NEED_RTNL,
12135 },
12136 #endif
12137 {
12138 .cmd = NL80211_CMD_REQ_SET_REG,
12139 .doit = nl80211_req_set_reg,
12140 .policy = nl80211_policy,
12141 .flags = GENL_ADMIN_PERM,
12142 },
12143 {
12144 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12145 .doit = nl80211_get_mesh_config,
12146 .policy = nl80211_policy,
12147 /* can be retrieved by unprivileged users */
12148 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12149 NL80211_FLAG_NEED_RTNL,
12150 },
12151 {
12152 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12153 .doit = nl80211_update_mesh_config,
12154 .policy = nl80211_policy,
12155 .flags = GENL_UNS_ADMIN_PERM,
12156 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12157 NL80211_FLAG_NEED_RTNL,
12158 },
12159 {
12160 .cmd = NL80211_CMD_TRIGGER_SCAN,
12161 .doit = nl80211_trigger_scan,
12162 .policy = nl80211_policy,
12163 .flags = GENL_UNS_ADMIN_PERM,
12164 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12165 NL80211_FLAG_NEED_RTNL,
12166 },
12167 {
12168 .cmd = NL80211_CMD_ABORT_SCAN,
12169 .doit = nl80211_abort_scan,
12170 .policy = nl80211_policy,
12171 .flags = GENL_UNS_ADMIN_PERM,
12172 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12173 NL80211_FLAG_NEED_RTNL,
12174 },
12175 {
12176 .cmd = NL80211_CMD_GET_SCAN,
12177 .policy = nl80211_policy,
12178 .dumpit = nl80211_dump_scan,
12179 },
12180 {
12181 .cmd = NL80211_CMD_START_SCHED_SCAN,
12182 .doit = nl80211_start_sched_scan,
12183 .policy = nl80211_policy,
12184 .flags = GENL_UNS_ADMIN_PERM,
12185 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12186 NL80211_FLAG_NEED_RTNL,
12187 },
12188 {
12189 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12190 .doit = nl80211_stop_sched_scan,
12191 .policy = nl80211_policy,
12192 .flags = GENL_UNS_ADMIN_PERM,
12193 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12194 NL80211_FLAG_NEED_RTNL,
12195 },
12196 {
12197 .cmd = NL80211_CMD_AUTHENTICATE,
12198 .doit = nl80211_authenticate,
12199 .policy = nl80211_policy,
12200 .flags = GENL_UNS_ADMIN_PERM,
12201 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12202 NL80211_FLAG_NEED_RTNL |
12203 NL80211_FLAG_CLEAR_SKB,
12204 },
12205 {
12206 .cmd = NL80211_CMD_ASSOCIATE,
12207 .doit = nl80211_associate,
12208 .policy = nl80211_policy,
12209 .flags = GENL_UNS_ADMIN_PERM,
12210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12211 NL80211_FLAG_NEED_RTNL,
12212 },
12213 {
12214 .cmd = NL80211_CMD_DEAUTHENTICATE,
12215 .doit = nl80211_deauthenticate,
12216 .policy = nl80211_policy,
12217 .flags = GENL_UNS_ADMIN_PERM,
12218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12219 NL80211_FLAG_NEED_RTNL,
12220 },
12221 {
12222 .cmd = NL80211_CMD_DISASSOCIATE,
12223 .doit = nl80211_disassociate,
12224 .policy = nl80211_policy,
12225 .flags = GENL_UNS_ADMIN_PERM,
12226 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12227 NL80211_FLAG_NEED_RTNL,
12228 },
12229 {
12230 .cmd = NL80211_CMD_JOIN_IBSS,
12231 .doit = nl80211_join_ibss,
12232 .policy = nl80211_policy,
12233 .flags = GENL_UNS_ADMIN_PERM,
12234 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12235 NL80211_FLAG_NEED_RTNL,
12236 },
12237 {
12238 .cmd = NL80211_CMD_LEAVE_IBSS,
12239 .doit = nl80211_leave_ibss,
12240 .policy = nl80211_policy,
12241 .flags = GENL_UNS_ADMIN_PERM,
12242 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12243 NL80211_FLAG_NEED_RTNL,
12244 },
12245 #ifdef CONFIG_NL80211_TESTMODE
12246 {
12247 .cmd = NL80211_CMD_TESTMODE,
12248 .doit = nl80211_testmode_do,
12249 .dumpit = nl80211_testmode_dump,
12250 .policy = nl80211_policy,
12251 .flags = GENL_UNS_ADMIN_PERM,
12252 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12253 NL80211_FLAG_NEED_RTNL,
12254 },
12255 #endif
12256 {
12257 .cmd = NL80211_CMD_CONNECT,
12258 .doit = nl80211_connect,
12259 .policy = nl80211_policy,
12260 .flags = GENL_UNS_ADMIN_PERM,
12261 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12262 NL80211_FLAG_NEED_RTNL,
12263 },
12264 {
12265 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12266 .doit = nl80211_update_connect_params,
12267 .policy = nl80211_policy,
12268 .flags = GENL_ADMIN_PERM,
12269 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12270 NL80211_FLAG_NEED_RTNL,
12271 },
12272 {
12273 .cmd = NL80211_CMD_DISCONNECT,
12274 .doit = nl80211_disconnect,
12275 .policy = nl80211_policy,
12276 .flags = GENL_UNS_ADMIN_PERM,
12277 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12278 NL80211_FLAG_NEED_RTNL,
12279 },
12280 {
12281 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12282 .doit = nl80211_wiphy_netns,
12283 .policy = nl80211_policy,
12284 .flags = GENL_UNS_ADMIN_PERM,
12285 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12286 NL80211_FLAG_NEED_RTNL,
12287 },
12288 {
12289 .cmd = NL80211_CMD_GET_SURVEY,
12290 .policy = nl80211_policy,
12291 .dumpit = nl80211_dump_survey,
12292 },
12293 {
12294 .cmd = NL80211_CMD_SET_PMKSA,
12295 .doit = nl80211_setdel_pmksa,
12296 .policy = nl80211_policy,
12297 .flags = GENL_UNS_ADMIN_PERM,
12298 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12299 NL80211_FLAG_NEED_RTNL,
12300 },
12301 {
12302 .cmd = NL80211_CMD_DEL_PMKSA,
12303 .doit = nl80211_setdel_pmksa,
12304 .policy = nl80211_policy,
12305 .flags = GENL_UNS_ADMIN_PERM,
12306 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12307 NL80211_FLAG_NEED_RTNL,
12308 },
12309 {
12310 .cmd = NL80211_CMD_FLUSH_PMKSA,
12311 .doit = nl80211_flush_pmksa,
12312 .policy = nl80211_policy,
12313 .flags = GENL_UNS_ADMIN_PERM,
12314 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12315 NL80211_FLAG_NEED_RTNL,
12316 },
12317 {
12318 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12319 .doit = nl80211_remain_on_channel,
12320 .policy = nl80211_policy,
12321 .flags = GENL_UNS_ADMIN_PERM,
12322 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12323 NL80211_FLAG_NEED_RTNL,
12324 },
12325 {
12326 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12327 .doit = nl80211_cancel_remain_on_channel,
12328 .policy = nl80211_policy,
12329 .flags = GENL_UNS_ADMIN_PERM,
12330 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12331 NL80211_FLAG_NEED_RTNL,
12332 },
12333 {
12334 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12335 .doit = nl80211_set_tx_bitrate_mask,
12336 .policy = nl80211_policy,
12337 .flags = GENL_UNS_ADMIN_PERM,
12338 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12339 NL80211_FLAG_NEED_RTNL,
12340 },
12341 {
12342 .cmd = NL80211_CMD_REGISTER_FRAME,
12343 .doit = nl80211_register_mgmt,
12344 .policy = nl80211_policy,
12345 .flags = GENL_UNS_ADMIN_PERM,
12346 .internal_flags = NL80211_FLAG_NEED_WDEV |
12347 NL80211_FLAG_NEED_RTNL,
12348 },
12349 {
12350 .cmd = NL80211_CMD_FRAME,
12351 .doit = nl80211_tx_mgmt,
12352 .policy = nl80211_policy,
12353 .flags = GENL_UNS_ADMIN_PERM,
12354 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12355 NL80211_FLAG_NEED_RTNL,
12356 },
12357 {
12358 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12359 .doit = nl80211_tx_mgmt_cancel_wait,
12360 .policy = nl80211_policy,
12361 .flags = GENL_UNS_ADMIN_PERM,
12362 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12363 NL80211_FLAG_NEED_RTNL,
12364 },
12365 {
12366 .cmd = NL80211_CMD_SET_POWER_SAVE,
12367 .doit = nl80211_set_power_save,
12368 .policy = nl80211_policy,
12369 .flags = GENL_UNS_ADMIN_PERM,
12370 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12371 NL80211_FLAG_NEED_RTNL,
12372 },
12373 {
12374 .cmd = NL80211_CMD_GET_POWER_SAVE,
12375 .doit = nl80211_get_power_save,
12376 .policy = nl80211_policy,
12377 /* can be retrieved by unprivileged users */
12378 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12379 NL80211_FLAG_NEED_RTNL,
12380 },
12381 {
12382 .cmd = NL80211_CMD_SET_CQM,
12383 .doit = nl80211_set_cqm,
12384 .policy = nl80211_policy,
12385 .flags = GENL_UNS_ADMIN_PERM,
12386 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12387 NL80211_FLAG_NEED_RTNL,
12388 },
12389 {
12390 .cmd = NL80211_CMD_SET_CHANNEL,
12391 .doit = nl80211_set_channel,
12392 .policy = nl80211_policy,
12393 .flags = GENL_UNS_ADMIN_PERM,
12394 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12395 NL80211_FLAG_NEED_RTNL,
12396 },
12397 {
12398 .cmd = NL80211_CMD_SET_WDS_PEER,
12399 .doit = nl80211_set_wds_peer,
12400 .policy = nl80211_policy,
12401 .flags = GENL_UNS_ADMIN_PERM,
12402 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12403 NL80211_FLAG_NEED_RTNL,
12404 },
12405 {
12406 .cmd = NL80211_CMD_JOIN_MESH,
12407 .doit = nl80211_join_mesh,
12408 .policy = nl80211_policy,
12409 .flags = GENL_UNS_ADMIN_PERM,
12410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12411 NL80211_FLAG_NEED_RTNL,
12412 },
12413 {
12414 .cmd = NL80211_CMD_LEAVE_MESH,
12415 .doit = nl80211_leave_mesh,
12416 .policy = nl80211_policy,
12417 .flags = GENL_UNS_ADMIN_PERM,
12418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12419 NL80211_FLAG_NEED_RTNL,
12420 },
12421 {
12422 .cmd = NL80211_CMD_JOIN_OCB,
12423 .doit = nl80211_join_ocb,
12424 .policy = nl80211_policy,
12425 .flags = GENL_UNS_ADMIN_PERM,
12426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12427 NL80211_FLAG_NEED_RTNL,
12428 },
12429 {
12430 .cmd = NL80211_CMD_LEAVE_OCB,
12431 .doit = nl80211_leave_ocb,
12432 .policy = nl80211_policy,
12433 .flags = GENL_UNS_ADMIN_PERM,
12434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12435 NL80211_FLAG_NEED_RTNL,
12436 },
12437 #ifdef CONFIG_PM
12438 {
12439 .cmd = NL80211_CMD_GET_WOWLAN,
12440 .doit = nl80211_get_wowlan,
12441 .policy = nl80211_policy,
12442 /* can be retrieved by unprivileged users */
12443 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12444 NL80211_FLAG_NEED_RTNL,
12445 },
12446 {
12447 .cmd = NL80211_CMD_SET_WOWLAN,
12448 .doit = nl80211_set_wowlan,
12449 .policy = nl80211_policy,
12450 .flags = GENL_UNS_ADMIN_PERM,
12451 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12452 NL80211_FLAG_NEED_RTNL,
12453 },
12454 #endif
12455 {
12456 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12457 .doit = nl80211_set_rekey_data,
12458 .policy = nl80211_policy,
12459 .flags = GENL_UNS_ADMIN_PERM,
12460 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12461 NL80211_FLAG_NEED_RTNL |
12462 NL80211_FLAG_CLEAR_SKB,
12463 },
12464 {
12465 .cmd = NL80211_CMD_TDLS_MGMT,
12466 .doit = nl80211_tdls_mgmt,
12467 .policy = nl80211_policy,
12468 .flags = GENL_UNS_ADMIN_PERM,
12469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12470 NL80211_FLAG_NEED_RTNL,
12471 },
12472 {
12473 .cmd = NL80211_CMD_TDLS_OPER,
12474 .doit = nl80211_tdls_oper,
12475 .policy = nl80211_policy,
12476 .flags = GENL_UNS_ADMIN_PERM,
12477 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12478 NL80211_FLAG_NEED_RTNL,
12479 },
12480 {
12481 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12482 .doit = nl80211_register_unexpected_frame,
12483 .policy = nl80211_policy,
12484 .flags = GENL_UNS_ADMIN_PERM,
12485 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12486 NL80211_FLAG_NEED_RTNL,
12487 },
12488 {
12489 .cmd = NL80211_CMD_PROBE_CLIENT,
12490 .doit = nl80211_probe_client,
12491 .policy = nl80211_policy,
12492 .flags = GENL_UNS_ADMIN_PERM,
12493 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12494 NL80211_FLAG_NEED_RTNL,
12495 },
12496 {
12497 .cmd = NL80211_CMD_REGISTER_BEACONS,
12498 .doit = nl80211_register_beacons,
12499 .policy = nl80211_policy,
12500 .flags = GENL_UNS_ADMIN_PERM,
12501 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12502 NL80211_FLAG_NEED_RTNL,
12503 },
12504 {
12505 .cmd = NL80211_CMD_SET_NOACK_MAP,
12506 .doit = nl80211_set_noack_map,
12507 .policy = nl80211_policy,
12508 .flags = GENL_UNS_ADMIN_PERM,
12509 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12510 NL80211_FLAG_NEED_RTNL,
12511 },
12512 {
12513 .cmd = NL80211_CMD_START_P2P_DEVICE,
12514 .doit = nl80211_start_p2p_device,
12515 .policy = nl80211_policy,
12516 .flags = GENL_UNS_ADMIN_PERM,
12517 .internal_flags = NL80211_FLAG_NEED_WDEV |
12518 NL80211_FLAG_NEED_RTNL,
12519 },
12520 {
12521 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12522 .doit = nl80211_stop_p2p_device,
12523 .policy = nl80211_policy,
12524 .flags = GENL_UNS_ADMIN_PERM,
12525 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12526 NL80211_FLAG_NEED_RTNL,
12527 },
12528 {
12529 .cmd = NL80211_CMD_START_NAN,
12530 .doit = nl80211_start_nan,
12531 .policy = nl80211_policy,
12532 .flags = GENL_ADMIN_PERM,
12533 .internal_flags = NL80211_FLAG_NEED_WDEV |
12534 NL80211_FLAG_NEED_RTNL,
12535 },
12536 {
12537 .cmd = NL80211_CMD_STOP_NAN,
12538 .doit = nl80211_stop_nan,
12539 .policy = nl80211_policy,
12540 .flags = GENL_ADMIN_PERM,
12541 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12542 NL80211_FLAG_NEED_RTNL,
12543 },
12544 {
12545 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12546 .doit = nl80211_nan_add_func,
12547 .policy = nl80211_policy,
12548 .flags = GENL_ADMIN_PERM,
12549 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12550 NL80211_FLAG_NEED_RTNL,
12551 },
12552 {
12553 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12554 .doit = nl80211_nan_del_func,
12555 .policy = nl80211_policy,
12556 .flags = GENL_ADMIN_PERM,
12557 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12558 NL80211_FLAG_NEED_RTNL,
12559 },
12560 {
12561 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12562 .doit = nl80211_nan_change_config,
12563 .policy = nl80211_policy,
12564 .flags = GENL_ADMIN_PERM,
12565 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12566 NL80211_FLAG_NEED_RTNL,
12567 },
12568 {
12569 .cmd = NL80211_CMD_SET_MCAST_RATE,
12570 .doit = nl80211_set_mcast_rate,
12571 .policy = nl80211_policy,
12572 .flags = GENL_UNS_ADMIN_PERM,
12573 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12574 NL80211_FLAG_NEED_RTNL,
12575 },
12576 {
12577 .cmd = NL80211_CMD_SET_MAC_ACL,
12578 .doit = nl80211_set_mac_acl,
12579 .policy = nl80211_policy,
12580 .flags = GENL_UNS_ADMIN_PERM,
12581 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12582 NL80211_FLAG_NEED_RTNL,
12583 },
12584 {
12585 .cmd = NL80211_CMD_RADAR_DETECT,
12586 .doit = nl80211_start_radar_detection,
12587 .policy = nl80211_policy,
12588 .flags = GENL_UNS_ADMIN_PERM,
12589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12590 NL80211_FLAG_NEED_RTNL,
12591 },
12592 {
12593 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12594 .doit = nl80211_get_protocol_features,
12595 .policy = nl80211_policy,
12596 },
12597 {
12598 .cmd = NL80211_CMD_UPDATE_FT_IES,
12599 .doit = nl80211_update_ft_ies,
12600 .policy = nl80211_policy,
12601 .flags = GENL_UNS_ADMIN_PERM,
12602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12603 NL80211_FLAG_NEED_RTNL,
12604 },
12605 {
12606 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12607 .doit = nl80211_crit_protocol_start,
12608 .policy = nl80211_policy,
12609 .flags = GENL_UNS_ADMIN_PERM,
12610 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12611 NL80211_FLAG_NEED_RTNL,
12612 },
12613 {
12614 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12615 .doit = nl80211_crit_protocol_stop,
12616 .policy = nl80211_policy,
12617 .flags = GENL_UNS_ADMIN_PERM,
12618 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12619 NL80211_FLAG_NEED_RTNL,
12620 },
12621 {
12622 .cmd = NL80211_CMD_GET_COALESCE,
12623 .doit = nl80211_get_coalesce,
12624 .policy = nl80211_policy,
12625 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12626 NL80211_FLAG_NEED_RTNL,
12627 },
12628 {
12629 .cmd = NL80211_CMD_SET_COALESCE,
12630 .doit = nl80211_set_coalesce,
12631 .policy = nl80211_policy,
12632 .flags = GENL_UNS_ADMIN_PERM,
12633 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12634 NL80211_FLAG_NEED_RTNL,
12635 },
12636 {
12637 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12638 .doit = nl80211_channel_switch,
12639 .policy = nl80211_policy,
12640 .flags = GENL_UNS_ADMIN_PERM,
12641 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12642 NL80211_FLAG_NEED_RTNL,
12643 },
12644 {
12645 .cmd = NL80211_CMD_VENDOR,
12646 .doit = nl80211_vendor_cmd,
12647 .dumpit = nl80211_vendor_cmd_dump,
12648 .policy = nl80211_policy,
12649 .flags = GENL_UNS_ADMIN_PERM,
12650 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12651 NL80211_FLAG_NEED_RTNL,
12652 },
12653 {
12654 .cmd = NL80211_CMD_SET_QOS_MAP,
12655 .doit = nl80211_set_qos_map,
12656 .policy = nl80211_policy,
12657 .flags = GENL_UNS_ADMIN_PERM,
12658 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12659 NL80211_FLAG_NEED_RTNL,
12660 },
12661 {
12662 .cmd = NL80211_CMD_ADD_TX_TS,
12663 .doit = nl80211_add_tx_ts,
12664 .policy = nl80211_policy,
12665 .flags = GENL_UNS_ADMIN_PERM,
12666 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12667 NL80211_FLAG_NEED_RTNL,
12668 },
12669 {
12670 .cmd = NL80211_CMD_DEL_TX_TS,
12671 .doit = nl80211_del_tx_ts,
12672 .policy = nl80211_policy,
12673 .flags = GENL_UNS_ADMIN_PERM,
12674 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675 NL80211_FLAG_NEED_RTNL,
12676 },
12677 {
12678 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12679 .doit = nl80211_tdls_channel_switch,
12680 .policy = nl80211_policy,
12681 .flags = GENL_UNS_ADMIN_PERM,
12682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683 NL80211_FLAG_NEED_RTNL,
12684 },
12685 {
12686 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12687 .doit = nl80211_tdls_cancel_channel_switch,
12688 .policy = nl80211_policy,
12689 .flags = GENL_UNS_ADMIN_PERM,
12690 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691 NL80211_FLAG_NEED_RTNL,
12692 },
12693 {
12694 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12695 .doit = nl80211_set_multicast_to_unicast,
12696 .policy = nl80211_policy,
12697 .flags = GENL_UNS_ADMIN_PERM,
12698 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12699 NL80211_FLAG_NEED_RTNL,
12700 },
12701 };
12702
12703 static struct genl_family nl80211_fam __ro_after_init = {
12704 .name = NL80211_GENL_NAME, /* have users key off the name instead */
12705 .hdrsize = 0, /* no private header */
12706 .version = 1, /* no particular meaning now */
12707 .maxattr = NL80211_ATTR_MAX,
12708 .netnsok = true,
12709 .pre_doit = nl80211_pre_doit,
12710 .post_doit = nl80211_post_doit,
12711 .module = THIS_MODULE,
12712 .ops = nl80211_ops,
12713 .n_ops = ARRAY_SIZE(nl80211_ops),
12714 .mcgrps = nl80211_mcgrps,
12715 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12716 };
12717
12718 /* notification functions */
12719
12720 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12721 enum nl80211_commands cmd)
12722 {
12723 struct sk_buff *msg;
12724 struct nl80211_dump_wiphy_state state = {};
12725
12726 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12727 cmd != NL80211_CMD_DEL_WIPHY);
12728
12729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12730 if (!msg)
12731 return;
12732
12733 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12734 nlmsg_free(msg);
12735 return;
12736 }
12737
12738 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12739 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12740 }
12741
12742 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12743 struct wireless_dev *wdev,
12744 enum nl80211_commands cmd)
12745 {
12746 struct sk_buff *msg;
12747
12748 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12749 cmd != NL80211_CMD_DEL_INTERFACE);
12750
12751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12752 if (!msg)
12753 return;
12754
12755 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12756 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12757 nlmsg_free(msg);
12758 return;
12759 }
12760
12761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12762 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12763 }
12764
12765 static int nl80211_add_scan_req(struct sk_buff *msg,
12766 struct cfg80211_registered_device *rdev)
12767 {
12768 struct cfg80211_scan_request *req = rdev->scan_req;
12769 struct nlattr *nest;
12770 int i;
12771
12772 if (WARN_ON(!req))
12773 return 0;
12774
12775 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12776 if (!nest)
12777 goto nla_put_failure;
12778 for (i = 0; i < req->n_ssids; i++) {
12779 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12780 goto nla_put_failure;
12781 }
12782 nla_nest_end(msg, nest);
12783
12784 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12785 if (!nest)
12786 goto nla_put_failure;
12787 for (i = 0; i < req->n_channels; i++) {
12788 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12789 goto nla_put_failure;
12790 }
12791 nla_nest_end(msg, nest);
12792
12793 if (req->ie &&
12794 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12795 goto nla_put_failure;
12796
12797 if (req->flags &&
12798 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12799 goto nla_put_failure;
12800
12801 if (req->info.scan_start_tsf &&
12802 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12803 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12804 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12805 req->info.tsf_bssid)))
12806 goto nla_put_failure;
12807
12808 return 0;
12809 nla_put_failure:
12810 return -ENOBUFS;
12811 }
12812
12813 static int nl80211_send_scan_msg(struct sk_buff *msg,
12814 struct cfg80211_registered_device *rdev,
12815 struct wireless_dev *wdev,
12816 u32 portid, u32 seq, int flags,
12817 u32 cmd)
12818 {
12819 void *hdr;
12820
12821 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12822 if (!hdr)
12823 return -1;
12824
12825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12826 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12827 wdev->netdev->ifindex)) ||
12828 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12829 NL80211_ATTR_PAD))
12830 goto nla_put_failure;
12831
12832 /* ignore errors and send incomplete event anyway */
12833 nl80211_add_scan_req(msg, rdev);
12834
12835 genlmsg_end(msg, hdr);
12836 return 0;
12837
12838 nla_put_failure:
12839 genlmsg_cancel(msg, hdr);
12840 return -EMSGSIZE;
12841 }
12842
12843 static int
12844 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12845 struct cfg80211_registered_device *rdev,
12846 struct net_device *netdev,
12847 u32 portid, u32 seq, int flags, u32 cmd)
12848 {
12849 void *hdr;
12850
12851 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12852 if (!hdr)
12853 return -1;
12854
12855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12856 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12857 goto nla_put_failure;
12858
12859 genlmsg_end(msg, hdr);
12860 return 0;
12861
12862 nla_put_failure:
12863 genlmsg_cancel(msg, hdr);
12864 return -EMSGSIZE;
12865 }
12866
12867 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12868 struct wireless_dev *wdev)
12869 {
12870 struct sk_buff *msg;
12871
12872 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12873 if (!msg)
12874 return;
12875
12876 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12877 NL80211_CMD_TRIGGER_SCAN) < 0) {
12878 nlmsg_free(msg);
12879 return;
12880 }
12881
12882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12883 NL80211_MCGRP_SCAN, GFP_KERNEL);
12884 }
12885
12886 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12887 struct wireless_dev *wdev, bool aborted)
12888 {
12889 struct sk_buff *msg;
12890
12891 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12892 if (!msg)
12893 return NULL;
12894
12895 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12896 aborted ? NL80211_CMD_SCAN_ABORTED :
12897 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12898 nlmsg_free(msg);
12899 return NULL;
12900 }
12901
12902 return msg;
12903 }
12904
12905 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12906 struct sk_buff *msg)
12907 {
12908 if (!msg)
12909 return;
12910
12911 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12912 NL80211_MCGRP_SCAN, GFP_KERNEL);
12913 }
12914
12915 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12916 struct net_device *netdev)
12917 {
12918 struct sk_buff *msg;
12919
12920 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12921 if (!msg)
12922 return;
12923
12924 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12925 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12926 nlmsg_free(msg);
12927 return;
12928 }
12929
12930 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12931 NL80211_MCGRP_SCAN, GFP_KERNEL);
12932 }
12933
12934 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12935 struct net_device *netdev, u32 cmd)
12936 {
12937 struct sk_buff *msg;
12938
12939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12940 if (!msg)
12941 return;
12942
12943 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12944 nlmsg_free(msg);
12945 return;
12946 }
12947
12948 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12949 NL80211_MCGRP_SCAN, GFP_KERNEL);
12950 }
12951
12952 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12953 struct regulatory_request *request)
12954 {
12955 /* Userspace can always count this one always being set */
12956 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12957 goto nla_put_failure;
12958
12959 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12960 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12961 NL80211_REGDOM_TYPE_WORLD))
12962 goto nla_put_failure;
12963 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12964 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12965 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12966 goto nla_put_failure;
12967 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12968 request->intersect) {
12969 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12970 NL80211_REGDOM_TYPE_INTERSECTION))
12971 goto nla_put_failure;
12972 } else {
12973 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12974 NL80211_REGDOM_TYPE_COUNTRY) ||
12975 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12976 request->alpha2))
12977 goto nla_put_failure;
12978 }
12979
12980 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12981 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12982
12983 if (wiphy &&
12984 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12985 goto nla_put_failure;
12986
12987 if (wiphy &&
12988 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12989 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12990 goto nla_put_failure;
12991 }
12992
12993 return true;
12994
12995 nla_put_failure:
12996 return false;
12997 }
12998
12999 /*
13000 * This can happen on global regulatory changes or device specific settings
13001 * based on custom regulatory domains.
13002 */
13003 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13004 struct regulatory_request *request)
13005 {
13006 struct sk_buff *msg;
13007 void *hdr;
13008
13009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13010 if (!msg)
13011 return;
13012
13013 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13014 if (!hdr) {
13015 nlmsg_free(msg);
13016 return;
13017 }
13018
13019 if (nl80211_reg_change_event_fill(msg, request) == false)
13020 goto nla_put_failure;
13021
13022 genlmsg_end(msg, hdr);
13023
13024 rcu_read_lock();
13025 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13026 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13027 rcu_read_unlock();
13028
13029 return;
13030
13031 nla_put_failure:
13032 genlmsg_cancel(msg, hdr);
13033 nlmsg_free(msg);
13034 }
13035
13036 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13037 struct net_device *netdev,
13038 const u8 *buf, size_t len,
13039 enum nl80211_commands cmd, gfp_t gfp,
13040 int uapsd_queues)
13041 {
13042 struct sk_buff *msg;
13043 void *hdr;
13044
13045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13046 if (!msg)
13047 return;
13048
13049 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13050 if (!hdr) {
13051 nlmsg_free(msg);
13052 return;
13053 }
13054
13055 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13056 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13057 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13058 goto nla_put_failure;
13059
13060 if (uapsd_queues >= 0) {
13061 struct nlattr *nla_wmm =
13062 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13063 if (!nla_wmm)
13064 goto nla_put_failure;
13065
13066 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13067 uapsd_queues))
13068 goto nla_put_failure;
13069
13070 nla_nest_end(msg, nla_wmm);
13071 }
13072
13073 genlmsg_end(msg, hdr);
13074
13075 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13076 NL80211_MCGRP_MLME, gfp);
13077 return;
13078
13079 nla_put_failure:
13080 genlmsg_cancel(msg, hdr);
13081 nlmsg_free(msg);
13082 }
13083
13084 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13085 struct net_device *netdev, const u8 *buf,
13086 size_t len, gfp_t gfp)
13087 {
13088 nl80211_send_mlme_event(rdev, netdev, buf, len,
13089 NL80211_CMD_AUTHENTICATE, gfp, -1);
13090 }
13091
13092 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13093 struct net_device *netdev, const u8 *buf,
13094 size_t len, gfp_t gfp, int uapsd_queues)
13095 {
13096 nl80211_send_mlme_event(rdev, netdev, buf, len,
13097 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13098 }
13099
13100 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13101 struct net_device *netdev, const u8 *buf,
13102 size_t len, gfp_t gfp)
13103 {
13104 nl80211_send_mlme_event(rdev, netdev, buf, len,
13105 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13106 }
13107
13108 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13109 struct net_device *netdev, const u8 *buf,
13110 size_t len, gfp_t gfp)
13111 {
13112 nl80211_send_mlme_event(rdev, netdev, buf, len,
13113 NL80211_CMD_DISASSOCIATE, gfp, -1);
13114 }
13115
13116 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13117 size_t len)
13118 {
13119 struct wireless_dev *wdev = dev->ieee80211_ptr;
13120 struct wiphy *wiphy = wdev->wiphy;
13121 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13122 const struct ieee80211_mgmt *mgmt = (void *)buf;
13123 u32 cmd;
13124
13125 if (WARN_ON(len < 2))
13126 return;
13127
13128 if (ieee80211_is_deauth(mgmt->frame_control))
13129 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13130 else
13131 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13132
13133 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13134 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13135 }
13136 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13137
13138 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13139 struct net_device *netdev, int cmd,
13140 const u8 *addr, gfp_t gfp)
13141 {
13142 struct sk_buff *msg;
13143 void *hdr;
13144
13145 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13146 if (!msg)
13147 return;
13148
13149 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13150 if (!hdr) {
13151 nlmsg_free(msg);
13152 return;
13153 }
13154
13155 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13156 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13157 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13158 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13159 goto nla_put_failure;
13160
13161 genlmsg_end(msg, hdr);
13162
13163 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13164 NL80211_MCGRP_MLME, gfp);
13165 return;
13166
13167 nla_put_failure:
13168 genlmsg_cancel(msg, hdr);
13169 nlmsg_free(msg);
13170 }
13171
13172 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13173 struct net_device *netdev, const u8 *addr,
13174 gfp_t gfp)
13175 {
13176 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13177 addr, gfp);
13178 }
13179
13180 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13181 struct net_device *netdev, const u8 *addr,
13182 gfp_t gfp)
13183 {
13184 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13185 addr, gfp);
13186 }
13187
13188 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13189 struct net_device *netdev, const u8 *bssid,
13190 const u8 *req_ie, size_t req_ie_len,
13191 const u8 *resp_ie, size_t resp_ie_len,
13192 int status, gfp_t gfp)
13193 {
13194 struct sk_buff *msg;
13195 void *hdr;
13196
13197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13198 if (!msg)
13199 return;
13200
13201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13202 if (!hdr) {
13203 nlmsg_free(msg);
13204 return;
13205 }
13206
13207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13208 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13209 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13210 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13211 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13212 status) ||
13213 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13214 (req_ie &&
13215 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13216 (resp_ie &&
13217 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13218 goto nla_put_failure;
13219
13220 genlmsg_end(msg, hdr);
13221
13222 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13223 NL80211_MCGRP_MLME, gfp);
13224 return;
13225
13226 nla_put_failure:
13227 genlmsg_cancel(msg, hdr);
13228 nlmsg_free(msg);
13229 }
13230
13231 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13232 struct net_device *netdev, const u8 *bssid,
13233 const u8 *req_ie, size_t req_ie_len,
13234 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13235 {
13236 struct sk_buff *msg;
13237 void *hdr;
13238
13239 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13240 if (!msg)
13241 return;
13242
13243 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13244 if (!hdr) {
13245 nlmsg_free(msg);
13246 return;
13247 }
13248
13249 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13250 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13251 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13252 (req_ie &&
13253 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13254 (resp_ie &&
13255 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13256 goto nla_put_failure;
13257
13258 genlmsg_end(msg, hdr);
13259
13260 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13261 NL80211_MCGRP_MLME, gfp);
13262 return;
13263
13264 nla_put_failure:
13265 genlmsg_cancel(msg, hdr);
13266 nlmsg_free(msg);
13267 }
13268
13269 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13270 struct net_device *netdev, u16 reason,
13271 const u8 *ie, size_t ie_len, bool from_ap)
13272 {
13273 struct sk_buff *msg;
13274 void *hdr;
13275
13276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13277 if (!msg)
13278 return;
13279
13280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13281 if (!hdr) {
13282 nlmsg_free(msg);
13283 return;
13284 }
13285
13286 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13287 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13288 (from_ap && reason &&
13289 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13290 (from_ap &&
13291 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13292 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13293 goto nla_put_failure;
13294
13295 genlmsg_end(msg, hdr);
13296
13297 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13298 NL80211_MCGRP_MLME, GFP_KERNEL);
13299 return;
13300
13301 nla_put_failure:
13302 genlmsg_cancel(msg, hdr);
13303 nlmsg_free(msg);
13304 }
13305
13306 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13307 struct net_device *netdev, const u8 *bssid,
13308 gfp_t gfp)
13309 {
13310 struct sk_buff *msg;
13311 void *hdr;
13312
13313 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13314 if (!msg)
13315 return;
13316
13317 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13318 if (!hdr) {
13319 nlmsg_free(msg);
13320 return;
13321 }
13322
13323 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13324 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13325 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13326 goto nla_put_failure;
13327
13328 genlmsg_end(msg, hdr);
13329
13330 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13331 NL80211_MCGRP_MLME, gfp);
13332 return;
13333
13334 nla_put_failure:
13335 genlmsg_cancel(msg, hdr);
13336 nlmsg_free(msg);
13337 }
13338
13339 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13340 const u8* ie, u8 ie_len, gfp_t gfp)
13341 {
13342 struct wireless_dev *wdev = dev->ieee80211_ptr;
13343 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13344 struct sk_buff *msg;
13345 void *hdr;
13346
13347 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13348 return;
13349
13350 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13351
13352 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13353 if (!msg)
13354 return;
13355
13356 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13357 if (!hdr) {
13358 nlmsg_free(msg);
13359 return;
13360 }
13361
13362 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13363 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13364 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13365 (ie_len && ie &&
13366 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13367 goto nla_put_failure;
13368
13369 genlmsg_end(msg, hdr);
13370
13371 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13372 NL80211_MCGRP_MLME, gfp);
13373 return;
13374
13375 nla_put_failure:
13376 genlmsg_cancel(msg, hdr);
13377 nlmsg_free(msg);
13378 }
13379 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13380
13381 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13382 struct net_device *netdev, const u8 *addr,
13383 enum nl80211_key_type key_type, int key_id,
13384 const u8 *tsc, gfp_t gfp)
13385 {
13386 struct sk_buff *msg;
13387 void *hdr;
13388
13389 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13390 if (!msg)
13391 return;
13392
13393 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13394 if (!hdr) {
13395 nlmsg_free(msg);
13396 return;
13397 }
13398
13399 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13400 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13401 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13402 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13403 (key_id != -1 &&
13404 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13405 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13406 goto nla_put_failure;
13407
13408 genlmsg_end(msg, hdr);
13409
13410 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13411 NL80211_MCGRP_MLME, gfp);
13412 return;
13413
13414 nla_put_failure:
13415 genlmsg_cancel(msg, hdr);
13416 nlmsg_free(msg);
13417 }
13418
13419 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13420 struct ieee80211_channel *channel_before,
13421 struct ieee80211_channel *channel_after)
13422 {
13423 struct sk_buff *msg;
13424 void *hdr;
13425 struct nlattr *nl_freq;
13426
13427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13428 if (!msg)
13429 return;
13430
13431 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13432 if (!hdr) {
13433 nlmsg_free(msg);
13434 return;
13435 }
13436
13437 /*
13438 * Since we are applying the beacon hint to a wiphy we know its
13439 * wiphy_idx is valid
13440 */
13441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13442 goto nla_put_failure;
13443
13444 /* Before */
13445 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13446 if (!nl_freq)
13447 goto nla_put_failure;
13448 if (nl80211_msg_put_channel(msg, channel_before, false))
13449 goto nla_put_failure;
13450 nla_nest_end(msg, nl_freq);
13451
13452 /* After */
13453 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13454 if (!nl_freq)
13455 goto nla_put_failure;
13456 if (nl80211_msg_put_channel(msg, channel_after, false))
13457 goto nla_put_failure;
13458 nla_nest_end(msg, nl_freq);
13459
13460 genlmsg_end(msg, hdr);
13461
13462 rcu_read_lock();
13463 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13464 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13465 rcu_read_unlock();
13466
13467 return;
13468
13469 nla_put_failure:
13470 genlmsg_cancel(msg, hdr);
13471 nlmsg_free(msg);
13472 }
13473
13474 static void nl80211_send_remain_on_chan_event(
13475 int cmd, struct cfg80211_registered_device *rdev,
13476 struct wireless_dev *wdev, u64 cookie,
13477 struct ieee80211_channel *chan,
13478 unsigned int duration, gfp_t gfp)
13479 {
13480 struct sk_buff *msg;
13481 void *hdr;
13482
13483 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13484 if (!msg)
13485 return;
13486
13487 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13488 if (!hdr) {
13489 nlmsg_free(msg);
13490 return;
13491 }
13492
13493 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13494 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13495 wdev->netdev->ifindex)) ||
13496 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13497 NL80211_ATTR_PAD) ||
13498 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13499 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13500 NL80211_CHAN_NO_HT) ||
13501 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13502 NL80211_ATTR_PAD))
13503 goto nla_put_failure;
13504
13505 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13506 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13507 goto nla_put_failure;
13508
13509 genlmsg_end(msg, hdr);
13510
13511 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13512 NL80211_MCGRP_MLME, gfp);
13513 return;
13514
13515 nla_put_failure:
13516 genlmsg_cancel(msg, hdr);
13517 nlmsg_free(msg);
13518 }
13519
13520 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13521 struct ieee80211_channel *chan,
13522 unsigned int duration, gfp_t gfp)
13523 {
13524 struct wiphy *wiphy = wdev->wiphy;
13525 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13526
13527 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13528 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13529 rdev, wdev, cookie, chan,
13530 duration, gfp);
13531 }
13532 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13533
13534 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13535 struct ieee80211_channel *chan,
13536 gfp_t gfp)
13537 {
13538 struct wiphy *wiphy = wdev->wiphy;
13539 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13540
13541 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13542 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13543 rdev, wdev, cookie, chan, 0, gfp);
13544 }
13545 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13546
13547 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13548 struct station_info *sinfo, gfp_t gfp)
13549 {
13550 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13551 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13552 struct sk_buff *msg;
13553
13554 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13555
13556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13557 if (!msg)
13558 return;
13559
13560 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13561 rdev, dev, mac_addr, sinfo) < 0) {
13562 nlmsg_free(msg);
13563 return;
13564 }
13565
13566 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13567 NL80211_MCGRP_MLME, gfp);
13568 }
13569 EXPORT_SYMBOL(cfg80211_new_sta);
13570
13571 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13572 struct station_info *sinfo, gfp_t gfp)
13573 {
13574 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13575 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13576 struct sk_buff *msg;
13577 struct station_info empty_sinfo = {};
13578
13579 if (!sinfo)
13580 sinfo = &empty_sinfo;
13581
13582 trace_cfg80211_del_sta(dev, mac_addr);
13583
13584 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13585 if (!msg)
13586 return;
13587
13588 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13589 rdev, dev, mac_addr, sinfo) < 0) {
13590 nlmsg_free(msg);
13591 return;
13592 }
13593
13594 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13595 NL80211_MCGRP_MLME, gfp);
13596 }
13597 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13598
13599 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13600 enum nl80211_connect_failed_reason reason,
13601 gfp_t gfp)
13602 {
13603 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13604 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13605 struct sk_buff *msg;
13606 void *hdr;
13607
13608 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13609 if (!msg)
13610 return;
13611
13612 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13613 if (!hdr) {
13614 nlmsg_free(msg);
13615 return;
13616 }
13617
13618 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13619 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13620 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13621 goto nla_put_failure;
13622
13623 genlmsg_end(msg, hdr);
13624
13625 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13626 NL80211_MCGRP_MLME, gfp);
13627 return;
13628
13629 nla_put_failure:
13630 genlmsg_cancel(msg, hdr);
13631 nlmsg_free(msg);
13632 }
13633 EXPORT_SYMBOL(cfg80211_conn_failed);
13634
13635 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13636 const u8 *addr, gfp_t gfp)
13637 {
13638 struct wireless_dev *wdev = dev->ieee80211_ptr;
13639 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13640 struct sk_buff *msg;
13641 void *hdr;
13642 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13643
13644 if (!nlportid)
13645 return false;
13646
13647 msg = nlmsg_new(100, gfp);
13648 if (!msg)
13649 return true;
13650
13651 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13652 if (!hdr) {
13653 nlmsg_free(msg);
13654 return true;
13655 }
13656
13657 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13658 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13659 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13660 goto nla_put_failure;
13661
13662 genlmsg_end(msg, hdr);
13663 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13664 return true;
13665
13666 nla_put_failure:
13667 genlmsg_cancel(msg, hdr);
13668 nlmsg_free(msg);
13669 return true;
13670 }
13671
13672 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13673 const u8 *addr, gfp_t gfp)
13674 {
13675 struct wireless_dev *wdev = dev->ieee80211_ptr;
13676 bool ret;
13677
13678 trace_cfg80211_rx_spurious_frame(dev, addr);
13679
13680 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13681 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13682 trace_cfg80211_return_bool(false);
13683 return false;
13684 }
13685 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13686 addr, gfp);
13687 trace_cfg80211_return_bool(ret);
13688 return ret;
13689 }
13690 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13691
13692 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13693 const u8 *addr, gfp_t gfp)
13694 {
13695 struct wireless_dev *wdev = dev->ieee80211_ptr;
13696 bool ret;
13697
13698 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13699
13700 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13701 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13702 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13703 trace_cfg80211_return_bool(false);
13704 return false;
13705 }
13706 ret = __nl80211_unexpected_frame(dev,
13707 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13708 addr, gfp);
13709 trace_cfg80211_return_bool(ret);
13710 return ret;
13711 }
13712 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13713
13714 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13715 struct wireless_dev *wdev, u32 nlportid,
13716 int freq, int sig_dbm,
13717 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13718 {
13719 struct net_device *netdev = wdev->netdev;
13720 struct sk_buff *msg;
13721 void *hdr;
13722
13723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13724 if (!msg)
13725 return -ENOMEM;
13726
13727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13728 if (!hdr) {
13729 nlmsg_free(msg);
13730 return -ENOMEM;
13731 }
13732
13733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13734 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13735 netdev->ifindex)) ||
13736 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13737 NL80211_ATTR_PAD) ||
13738 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13739 (sig_dbm &&
13740 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13741 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13742 (flags &&
13743 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13744 goto nla_put_failure;
13745
13746 genlmsg_end(msg, hdr);
13747
13748 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13749
13750 nla_put_failure:
13751 genlmsg_cancel(msg, hdr);
13752 nlmsg_free(msg);
13753 return -ENOBUFS;
13754 }
13755
13756 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13757 const u8 *buf, size_t len, bool ack, gfp_t gfp)
13758 {
13759 struct wiphy *wiphy = wdev->wiphy;
13760 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13761 struct net_device *netdev = wdev->netdev;
13762 struct sk_buff *msg;
13763 void *hdr;
13764
13765 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13766
13767 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13768 if (!msg)
13769 return;
13770
13771 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13772 if (!hdr) {
13773 nlmsg_free(msg);
13774 return;
13775 }
13776
13777 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13778 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13779 netdev->ifindex)) ||
13780 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13781 NL80211_ATTR_PAD) ||
13782 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13783 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13784 NL80211_ATTR_PAD) ||
13785 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13786 goto nla_put_failure;
13787
13788 genlmsg_end(msg, hdr);
13789
13790 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13791 NL80211_MCGRP_MLME, gfp);
13792 return;
13793
13794 nla_put_failure:
13795 genlmsg_cancel(msg, hdr);
13796 nlmsg_free(msg);
13797 }
13798 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13799
13800 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13801 const char *mac, gfp_t gfp)
13802 {
13803 struct wireless_dev *wdev = dev->ieee80211_ptr;
13804 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13805 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13806 void **cb;
13807
13808 if (!msg)
13809 return NULL;
13810
13811 cb = (void **)msg->cb;
13812
13813 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13814 if (!cb[0]) {
13815 nlmsg_free(msg);
13816 return NULL;
13817 }
13818
13819 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13820 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13821 goto nla_put_failure;
13822
13823 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13824 goto nla_put_failure;
13825
13826 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13827 if (!cb[1])
13828 goto nla_put_failure;
13829
13830 cb[2] = rdev;
13831
13832 return msg;
13833 nla_put_failure:
13834 nlmsg_free(msg);
13835 return NULL;
13836 }
13837
13838 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13839 {
13840 void **cb = (void **)msg->cb;
13841 struct cfg80211_registered_device *rdev = cb[2];
13842
13843 nla_nest_end(msg, cb[1]);
13844 genlmsg_end(msg, cb[0]);
13845
13846 memset(msg->cb, 0, sizeof(msg->cb));
13847
13848 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13849 NL80211_MCGRP_MLME, gfp);
13850 }
13851
13852 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13853 enum nl80211_cqm_rssi_threshold_event rssi_event,
13854 gfp_t gfp)
13855 {
13856 struct sk_buff *msg;
13857
13858 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13859
13860 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13861 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13862 return;
13863
13864 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13865 if (!msg)
13866 return;
13867
13868 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13869 rssi_event))
13870 goto nla_put_failure;
13871
13872 cfg80211_send_cqm(msg, gfp);
13873
13874 return;
13875
13876 nla_put_failure:
13877 nlmsg_free(msg);
13878 }
13879 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13880
13881 void cfg80211_cqm_txe_notify(struct net_device *dev,
13882 const u8 *peer, u32 num_packets,
13883 u32 rate, u32 intvl, gfp_t gfp)
13884 {
13885 struct sk_buff *msg;
13886
13887 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13888 if (!msg)
13889 return;
13890
13891 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13892 goto nla_put_failure;
13893
13894 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13895 goto nla_put_failure;
13896
13897 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13898 goto nla_put_failure;
13899
13900 cfg80211_send_cqm(msg, gfp);
13901 return;
13902
13903 nla_put_failure:
13904 nlmsg_free(msg);
13905 }
13906 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13907
13908 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13909 const u8 *peer, u32 num_packets, gfp_t gfp)
13910 {
13911 struct sk_buff *msg;
13912
13913 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13914
13915 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13916 if (!msg)
13917 return;
13918
13919 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13920 goto nla_put_failure;
13921
13922 cfg80211_send_cqm(msg, gfp);
13923 return;
13924
13925 nla_put_failure:
13926 nlmsg_free(msg);
13927 }
13928 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13929
13930 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13931 {
13932 struct sk_buff *msg;
13933
13934 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13935 if (!msg)
13936 return;
13937
13938 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13939 goto nla_put_failure;
13940
13941 cfg80211_send_cqm(msg, gfp);
13942 return;
13943
13944 nla_put_failure:
13945 nlmsg_free(msg);
13946 }
13947 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13948
13949 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13950 struct net_device *netdev, const u8 *bssid,
13951 const u8 *replay_ctr, gfp_t gfp)
13952 {
13953 struct sk_buff *msg;
13954 struct nlattr *rekey_attr;
13955 void *hdr;
13956
13957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13958 if (!msg)
13959 return;
13960
13961 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13962 if (!hdr) {
13963 nlmsg_free(msg);
13964 return;
13965 }
13966
13967 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13968 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13969 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13970 goto nla_put_failure;
13971
13972 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13973 if (!rekey_attr)
13974 goto nla_put_failure;
13975
13976 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13977 NL80211_REPLAY_CTR_LEN, replay_ctr))
13978 goto nla_put_failure;
13979
13980 nla_nest_end(msg, rekey_attr);
13981
13982 genlmsg_end(msg, hdr);
13983
13984 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13985 NL80211_MCGRP_MLME, gfp);
13986 return;
13987
13988 nla_put_failure:
13989 genlmsg_cancel(msg, hdr);
13990 nlmsg_free(msg);
13991 }
13992
13993 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13994 const u8 *replay_ctr, gfp_t gfp)
13995 {
13996 struct wireless_dev *wdev = dev->ieee80211_ptr;
13997 struct wiphy *wiphy = wdev->wiphy;
13998 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13999
14000 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14001 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14002 }
14003 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14004
14005 static void
14006 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14007 struct net_device *netdev, int index,
14008 const u8 *bssid, bool preauth, gfp_t gfp)
14009 {
14010 struct sk_buff *msg;
14011 struct nlattr *attr;
14012 void *hdr;
14013
14014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14015 if (!msg)
14016 return;
14017
14018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14019 if (!hdr) {
14020 nlmsg_free(msg);
14021 return;
14022 }
14023
14024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14025 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14026 goto nla_put_failure;
14027
14028 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14029 if (!attr)
14030 goto nla_put_failure;
14031
14032 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14033 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14034 (preauth &&
14035 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14036 goto nla_put_failure;
14037
14038 nla_nest_end(msg, attr);
14039
14040 genlmsg_end(msg, hdr);
14041
14042 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14043 NL80211_MCGRP_MLME, gfp);
14044 return;
14045
14046 nla_put_failure:
14047 genlmsg_cancel(msg, hdr);
14048 nlmsg_free(msg);
14049 }
14050
14051 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14052 const u8 *bssid, bool preauth, gfp_t gfp)
14053 {
14054 struct wireless_dev *wdev = dev->ieee80211_ptr;
14055 struct wiphy *wiphy = wdev->wiphy;
14056 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14057
14058 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14059 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14060 }
14061 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14062
14063 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14064 struct net_device *netdev,
14065 struct cfg80211_chan_def *chandef,
14066 gfp_t gfp,
14067 enum nl80211_commands notif,
14068 u8 count)
14069 {
14070 struct sk_buff *msg;
14071 void *hdr;
14072
14073 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14074 if (!msg)
14075 return;
14076
14077 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14078 if (!hdr) {
14079 nlmsg_free(msg);
14080 return;
14081 }
14082
14083 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14084 goto nla_put_failure;
14085
14086 if (nl80211_send_chandef(msg, chandef))
14087 goto nla_put_failure;
14088
14089 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14090 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14091 goto nla_put_failure;
14092
14093 genlmsg_end(msg, hdr);
14094
14095 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14096 NL80211_MCGRP_MLME, gfp);
14097 return;
14098
14099 nla_put_failure:
14100 genlmsg_cancel(msg, hdr);
14101 nlmsg_free(msg);
14102 }
14103
14104 void cfg80211_ch_switch_notify(struct net_device *dev,
14105 struct cfg80211_chan_def *chandef)
14106 {
14107 struct wireless_dev *wdev = dev->ieee80211_ptr;
14108 struct wiphy *wiphy = wdev->wiphy;
14109 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14110
14111 ASSERT_WDEV_LOCK(wdev);
14112
14113 trace_cfg80211_ch_switch_notify(dev, chandef);
14114
14115 wdev->chandef = *chandef;
14116 wdev->preset_chandef = *chandef;
14117 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14118 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14119 }
14120 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14121
14122 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14123 struct cfg80211_chan_def *chandef,
14124 u8 count)
14125 {
14126 struct wireless_dev *wdev = dev->ieee80211_ptr;
14127 struct wiphy *wiphy = wdev->wiphy;
14128 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14129
14130 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14131
14132 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14133 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14134 }
14135 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14136
14137 void
14138 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14139 const struct cfg80211_chan_def *chandef,
14140 enum nl80211_radar_event event,
14141 struct net_device *netdev, gfp_t gfp)
14142 {
14143 struct sk_buff *msg;
14144 void *hdr;
14145
14146 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14147 if (!msg)
14148 return;
14149
14150 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14151 if (!hdr) {
14152 nlmsg_free(msg);
14153 return;
14154 }
14155
14156 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14157 goto nla_put_failure;
14158
14159 /* NOP and radar events don't need a netdev parameter */
14160 if (netdev) {
14161 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14162
14163 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14164 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14165 NL80211_ATTR_PAD))
14166 goto nla_put_failure;
14167 }
14168
14169 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14170 goto nla_put_failure;
14171
14172 if (nl80211_send_chandef(msg, chandef))
14173 goto nla_put_failure;
14174
14175 genlmsg_end(msg, hdr);
14176
14177 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14178 NL80211_MCGRP_MLME, gfp);
14179 return;
14180
14181 nla_put_failure:
14182 genlmsg_cancel(msg, hdr);
14183 nlmsg_free(msg);
14184 }
14185
14186 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14187 u64 cookie, bool acked, gfp_t gfp)
14188 {
14189 struct wireless_dev *wdev = dev->ieee80211_ptr;
14190 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14191 struct sk_buff *msg;
14192 void *hdr;
14193
14194 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14195
14196 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14197
14198 if (!msg)
14199 return;
14200
14201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14202 if (!hdr) {
14203 nlmsg_free(msg);
14204 return;
14205 }
14206
14207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14208 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14209 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14210 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14211 NL80211_ATTR_PAD) ||
14212 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14213 goto nla_put_failure;
14214
14215 genlmsg_end(msg, hdr);
14216
14217 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14218 NL80211_MCGRP_MLME, gfp);
14219 return;
14220
14221 nla_put_failure:
14222 genlmsg_cancel(msg, hdr);
14223 nlmsg_free(msg);
14224 }
14225 EXPORT_SYMBOL(cfg80211_probe_status);
14226
14227 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14228 const u8 *frame, size_t len,
14229 int freq, int sig_dbm)
14230 {
14231 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14232 struct sk_buff *msg;
14233 void *hdr;
14234 struct cfg80211_beacon_registration *reg;
14235
14236 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14237
14238 spin_lock_bh(&rdev->beacon_registrations_lock);
14239 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14240 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14241 if (!msg) {
14242 spin_unlock_bh(&rdev->beacon_registrations_lock);
14243 return;
14244 }
14245
14246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14247 if (!hdr)
14248 goto nla_put_failure;
14249
14250 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14251 (freq &&
14252 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14253 (sig_dbm &&
14254 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14255 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14256 goto nla_put_failure;
14257
14258 genlmsg_end(msg, hdr);
14259
14260 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14261 }
14262 spin_unlock_bh(&rdev->beacon_registrations_lock);
14263 return;
14264
14265 nla_put_failure:
14266 spin_unlock_bh(&rdev->beacon_registrations_lock);
14267 if (hdr)
14268 genlmsg_cancel(msg, hdr);
14269 nlmsg_free(msg);
14270 }
14271 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14272
14273 #ifdef CONFIG_PM
14274 static int cfg80211_net_detect_results(struct sk_buff *msg,
14275 struct cfg80211_wowlan_wakeup *wakeup)
14276 {
14277 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14278 struct nlattr *nl_results, *nl_match, *nl_freqs;
14279 int i, j;
14280
14281 nl_results = nla_nest_start(
14282 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14283 if (!nl_results)
14284 return -EMSGSIZE;
14285
14286 for (i = 0; i < nd->n_matches; i++) {
14287 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14288
14289 nl_match = nla_nest_start(msg, i);
14290 if (!nl_match)
14291 break;
14292
14293 /* The SSID attribute is optional in nl80211, but for
14294 * simplicity reasons it's always present in the
14295 * cfg80211 structure. If a driver can't pass the
14296 * SSID, that needs to be changed. A zero length SSID
14297 * is still a valid SSID (wildcard), so it cannot be
14298 * used for this purpose.
14299 */
14300 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14301 match->ssid.ssid)) {
14302 nla_nest_cancel(msg, nl_match);
14303 goto out;
14304 }
14305
14306 if (match->n_channels) {
14307 nl_freqs = nla_nest_start(
14308 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14309 if (!nl_freqs) {
14310 nla_nest_cancel(msg, nl_match);
14311 goto out;
14312 }
14313
14314 for (j = 0; j < match->n_channels; j++) {
14315 if (nla_put_u32(msg, j, match->channels[j])) {
14316 nla_nest_cancel(msg, nl_freqs);
14317 nla_nest_cancel(msg, nl_match);
14318 goto out;
14319 }
14320 }
14321
14322 nla_nest_end(msg, nl_freqs);
14323 }
14324
14325 nla_nest_end(msg, nl_match);
14326 }
14327
14328 out:
14329 nla_nest_end(msg, nl_results);
14330 return 0;
14331 }
14332
14333 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14334 struct cfg80211_wowlan_wakeup *wakeup,
14335 gfp_t gfp)
14336 {
14337 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14338 struct sk_buff *msg;
14339 void *hdr;
14340 int size = 200;
14341
14342 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14343
14344 if (wakeup)
14345 size += wakeup->packet_present_len;
14346
14347 msg = nlmsg_new(size, gfp);
14348 if (!msg)
14349 return;
14350
14351 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14352 if (!hdr)
14353 goto free_msg;
14354
14355 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14356 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14357 NL80211_ATTR_PAD))
14358 goto free_msg;
14359
14360 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14361 wdev->netdev->ifindex))
14362 goto free_msg;
14363
14364 if (wakeup) {
14365 struct nlattr *reasons;
14366
14367 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14368 if (!reasons)
14369 goto free_msg;
14370
14371 if (wakeup->disconnect &&
14372 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14373 goto free_msg;
14374 if (wakeup->magic_pkt &&
14375 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14376 goto free_msg;
14377 if (wakeup->gtk_rekey_failure &&
14378 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14379 goto free_msg;
14380 if (wakeup->eap_identity_req &&
14381 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14382 goto free_msg;
14383 if (wakeup->four_way_handshake &&
14384 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14385 goto free_msg;
14386 if (wakeup->rfkill_release &&
14387 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14388 goto free_msg;
14389
14390 if (wakeup->pattern_idx >= 0 &&
14391 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14392 wakeup->pattern_idx))
14393 goto free_msg;
14394
14395 if (wakeup->tcp_match &&
14396 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14397 goto free_msg;
14398
14399 if (wakeup->tcp_connlost &&
14400 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14401 goto free_msg;
14402
14403 if (wakeup->tcp_nomoretokens &&
14404 nla_put_flag(msg,
14405 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14406 goto free_msg;
14407
14408 if (wakeup->packet) {
14409 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14410 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14411
14412 if (!wakeup->packet_80211) {
14413 pkt_attr =
14414 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14415 len_attr =
14416 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14417 }
14418
14419 if (wakeup->packet_len &&
14420 nla_put_u32(msg, len_attr, wakeup->packet_len))
14421 goto free_msg;
14422
14423 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14424 wakeup->packet))
14425 goto free_msg;
14426 }
14427
14428 if (wakeup->net_detect &&
14429 cfg80211_net_detect_results(msg, wakeup))
14430 goto free_msg;
14431
14432 nla_nest_end(msg, reasons);
14433 }
14434
14435 genlmsg_end(msg, hdr);
14436
14437 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14438 NL80211_MCGRP_MLME, gfp);
14439 return;
14440
14441 free_msg:
14442 nlmsg_free(msg);
14443 }
14444 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14445 #endif
14446
14447 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14448 enum nl80211_tdls_operation oper,
14449 u16 reason_code, gfp_t gfp)
14450 {
14451 struct wireless_dev *wdev = dev->ieee80211_ptr;
14452 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14453 struct sk_buff *msg;
14454 void *hdr;
14455
14456 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14457 reason_code);
14458
14459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14460 if (!msg)
14461 return;
14462
14463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14464 if (!hdr) {
14465 nlmsg_free(msg);
14466 return;
14467 }
14468
14469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14470 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14471 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14472 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14473 (reason_code > 0 &&
14474 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14475 goto nla_put_failure;
14476
14477 genlmsg_end(msg, hdr);
14478
14479 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14480 NL80211_MCGRP_MLME, gfp);
14481 return;
14482
14483 nla_put_failure:
14484 genlmsg_cancel(msg, hdr);
14485 nlmsg_free(msg);
14486 }
14487 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14488
14489 static int nl80211_netlink_notify(struct notifier_block * nb,
14490 unsigned long state,
14491 void *_notify)
14492 {
14493 struct netlink_notify *notify = _notify;
14494 struct cfg80211_registered_device *rdev;
14495 struct wireless_dev *wdev;
14496 struct cfg80211_beacon_registration *reg, *tmp;
14497
14498 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14499 return NOTIFY_DONE;
14500
14501 rcu_read_lock();
14502
14503 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14504 bool schedule_destroy_work = false;
14505 struct cfg80211_sched_scan_request *sched_scan_req =
14506 rcu_dereference(rdev->sched_scan_req);
14507
14508 if (sched_scan_req && notify->portid &&
14509 sched_scan_req->owner_nlportid == notify->portid) {
14510 sched_scan_req->owner_nlportid = 0;
14511
14512 if (rdev->ops->sched_scan_stop &&
14513 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14514 schedule_work(&rdev->sched_scan_stop_wk);
14515 }
14516
14517 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14518 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14519
14520 if (wdev->owner_nlportid == notify->portid)
14521 schedule_destroy_work = true;
14522 }
14523
14524 spin_lock_bh(&rdev->beacon_registrations_lock);
14525 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14526 list) {
14527 if (reg->nlportid == notify->portid) {
14528 list_del(&reg->list);
14529 kfree(reg);
14530 break;
14531 }
14532 }
14533 spin_unlock_bh(&rdev->beacon_registrations_lock);
14534
14535 if (schedule_destroy_work) {
14536 struct cfg80211_iface_destroy *destroy;
14537
14538 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14539 if (destroy) {
14540 destroy->nlportid = notify->portid;
14541 spin_lock(&rdev->destroy_list_lock);
14542 list_add(&destroy->list, &rdev->destroy_list);
14543 spin_unlock(&rdev->destroy_list_lock);
14544 schedule_work(&rdev->destroy_work);
14545 }
14546 }
14547 }
14548
14549 rcu_read_unlock();
14550
14551 /*
14552 * It is possible that the user space process that is controlling the
14553 * indoor setting disappeared, so notify the regulatory core.
14554 */
14555 regulatory_netlink_notify(notify->portid);
14556 return NOTIFY_OK;
14557 }
14558
14559 static struct notifier_block nl80211_netlink_notifier = {
14560 .notifier_call = nl80211_netlink_notify,
14561 };
14562
14563 void cfg80211_ft_event(struct net_device *netdev,
14564 struct cfg80211_ft_event_params *ft_event)
14565 {
14566 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14567 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14568 struct sk_buff *msg;
14569 void *hdr;
14570
14571 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14572
14573 if (!ft_event->target_ap)
14574 return;
14575
14576 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14577 if (!msg)
14578 return;
14579
14580 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14581 if (!hdr)
14582 goto out;
14583
14584 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14585 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14586 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14587 goto out;
14588
14589 if (ft_event->ies &&
14590 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14591 goto out;
14592 if (ft_event->ric_ies &&
14593 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14594 ft_event->ric_ies))
14595 goto out;
14596
14597 genlmsg_end(msg, hdr);
14598
14599 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14600 NL80211_MCGRP_MLME, GFP_KERNEL);
14601 return;
14602 out:
14603 nlmsg_free(msg);
14604 }
14605 EXPORT_SYMBOL(cfg80211_ft_event);
14606
14607 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14608 {
14609 struct cfg80211_registered_device *rdev;
14610 struct sk_buff *msg;
14611 void *hdr;
14612 u32 nlportid;
14613
14614 rdev = wiphy_to_rdev(wdev->wiphy);
14615 if (!rdev->crit_proto_nlportid)
14616 return;
14617
14618 nlportid = rdev->crit_proto_nlportid;
14619 rdev->crit_proto_nlportid = 0;
14620
14621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14622 if (!msg)
14623 return;
14624
14625 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14626 if (!hdr)
14627 goto nla_put_failure;
14628
14629 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14630 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14631 NL80211_ATTR_PAD))
14632 goto nla_put_failure;
14633
14634 genlmsg_end(msg, hdr);
14635
14636 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14637 return;
14638
14639 nla_put_failure:
14640 if (hdr)
14641 genlmsg_cancel(msg, hdr);
14642 nlmsg_free(msg);
14643 }
14644 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14645
14646 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14647 {
14648 struct wiphy *wiphy = wdev->wiphy;
14649 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14650 struct sk_buff *msg;
14651 void *hdr;
14652
14653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14654 if (!msg)
14655 return;
14656
14657 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14658 if (!hdr)
14659 goto out;
14660
14661 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14662 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14663 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14664 NL80211_ATTR_PAD))
14665 goto out;
14666
14667 genlmsg_end(msg, hdr);
14668
14669 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14670 NL80211_MCGRP_MLME, GFP_KERNEL);
14671 return;
14672 out:
14673 nlmsg_free(msg);
14674 }
14675
14676 /* initialisation/exit functions */
14677
14678 int __init nl80211_init(void)
14679 {
14680 int err;
14681
14682 err = genl_register_family(&nl80211_fam);
14683 if (err)
14684 return err;
14685
14686 err = netlink_register_notifier(&nl80211_netlink_notifier);
14687 if (err)
14688 goto err_out;
14689
14690 return 0;
14691 err_out:
14692 genl_unregister_family(&nl80211_fam);
14693 return err;
14694 }
14695
14696 void nl80211_exit(void)
14697 {
14698 netlink_unregister_notifier(&nl80211_netlink_notifier);
14699 genl_unregister_family(&nl80211_fam);
14700 }
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