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nl80211: Sanitize array index in parse_txq_params
[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 2015-2017 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/nospec.h>
20 #include <linux/etherdevice.h>
21 #include <net/net_namespace.h>
22 #include <net/genetlink.h>
23 #include <net/cfg80211.h>
24 #include <net/sock.h>
25 #include <net/inet_connection_sock.h>
26 #include "core.h"
27 #include "nl80211.h"
28 #include "reg.h"
29 #include "rdev-ops.h"
30
31 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
32 struct genl_info *info,
33 struct cfg80211_crypto_settings *settings,
34 int cipher_limit);
35
36 /* the netlink family */
37 static struct genl_family nl80211_fam;
38
39 /* multicast groups */
40 enum nl80211_multicast_groups {
41 NL80211_MCGRP_CONFIG,
42 NL80211_MCGRP_SCAN,
43 NL80211_MCGRP_REGULATORY,
44 NL80211_MCGRP_MLME,
45 NL80211_MCGRP_VENDOR,
46 NL80211_MCGRP_NAN,
47 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
48 };
49
50 static const struct genl_multicast_group nl80211_mcgrps[] = {
51 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
52 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
53 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
54 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
55 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
56 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
57 #ifdef CONFIG_NL80211_TESTMODE
58 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
59 #endif
60 };
61
62 /* returns ERR_PTR values */
63 static struct wireless_dev *
64 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
65 {
66 struct cfg80211_registered_device *rdev;
67 struct wireless_dev *result = NULL;
68 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
69 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
70 u64 wdev_id;
71 int wiphy_idx = -1;
72 int ifidx = -1;
73
74 ASSERT_RTNL();
75
76 if (!have_ifidx && !have_wdev_id)
77 return ERR_PTR(-EINVAL);
78
79 if (have_ifidx)
80 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
81 if (have_wdev_id) {
82 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
83 wiphy_idx = wdev_id >> 32;
84 }
85
86 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
87 struct wireless_dev *wdev;
88
89 if (wiphy_net(&rdev->wiphy) != netns)
90 continue;
91
92 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
93 continue;
94
95 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
96 if (have_ifidx && wdev->netdev &&
97 wdev->netdev->ifindex == ifidx) {
98 result = wdev;
99 break;
100 }
101 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
102 result = wdev;
103 break;
104 }
105 }
106
107 if (result)
108 break;
109 }
110
111 if (result)
112 return result;
113 return ERR_PTR(-ENODEV);
114 }
115
116 static struct cfg80211_registered_device *
117 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
118 {
119 struct cfg80211_registered_device *rdev = NULL, *tmp;
120 struct net_device *netdev;
121
122 ASSERT_RTNL();
123
124 if (!attrs[NL80211_ATTR_WIPHY] &&
125 !attrs[NL80211_ATTR_IFINDEX] &&
126 !attrs[NL80211_ATTR_WDEV])
127 return ERR_PTR(-EINVAL);
128
129 if (attrs[NL80211_ATTR_WIPHY])
130 rdev = cfg80211_rdev_by_wiphy_idx(
131 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
132
133 if (attrs[NL80211_ATTR_WDEV]) {
134 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
135 struct wireless_dev *wdev;
136 bool found = false;
137
138 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
139 if (tmp) {
140 /* make sure wdev exists */
141 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
142 if (wdev->identifier != (u32)wdev_id)
143 continue;
144 found = true;
145 break;
146 }
147
148 if (!found)
149 tmp = NULL;
150
151 if (rdev && tmp != rdev)
152 return ERR_PTR(-EINVAL);
153 rdev = tmp;
154 }
155 }
156
157 if (attrs[NL80211_ATTR_IFINDEX]) {
158 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
159
160 netdev = __dev_get_by_index(netns, ifindex);
161 if (netdev) {
162 if (netdev->ieee80211_ptr)
163 tmp = wiphy_to_rdev(
164 netdev->ieee80211_ptr->wiphy);
165 else
166 tmp = NULL;
167
168 /* not wireless device -- return error */
169 if (!tmp)
170 return ERR_PTR(-EINVAL);
171
172 /* mismatch -- return error */
173 if (rdev && tmp != rdev)
174 return ERR_PTR(-EINVAL);
175
176 rdev = tmp;
177 }
178 }
179
180 if (!rdev)
181 return ERR_PTR(-ENODEV);
182
183 if (netns != wiphy_net(&rdev->wiphy))
184 return ERR_PTR(-ENODEV);
185
186 return rdev;
187 }
188
189 /*
190 * This function returns a pointer to the driver
191 * that the genl_info item that is passed refers to.
192 *
193 * The result of this can be a PTR_ERR and hence must
194 * be checked with IS_ERR() for errors.
195 */
196 static struct cfg80211_registered_device *
197 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
198 {
199 return __cfg80211_rdev_from_attrs(netns, info->attrs);
200 }
201
202 /* policy for the attributes */
203 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
204 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
205 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
206 .len = 20-1 },
207 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
208
209 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
210 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
211 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
212 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
213 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
214
215 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
216 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
217 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
220 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
221
222 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
223 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
224 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
225
226 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
227 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
228
229 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
230 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
231 .len = WLAN_MAX_KEY_LEN },
232 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
233 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
234 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
235 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
236 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
237
238 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
239 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
240 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
241 .len = IEEE80211_MAX_DATA_LEN },
242 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
243 .len = IEEE80211_MAX_DATA_LEN },
244 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
245 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
246 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
247 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
248 .len = NL80211_MAX_SUPP_RATES },
249 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
250 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
251 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
252 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_MESH_ID_LEN },
254 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
255
256 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
257 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
258
259 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
260 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
262 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
263 .len = NL80211_MAX_SUPP_RATES },
264 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
265
266 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
267 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
268
269 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
270
271 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
272 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
273 .len = IEEE80211_MAX_DATA_LEN },
274 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
275 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
276
277 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
278 .len = IEEE80211_MAX_SSID_LEN },
279 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
280 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
281 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
282 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
283 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
284 [NL80211_ATTR_STA_FLAGS2] = {
285 .len = sizeof(struct nl80211_sta_flag_update),
286 },
287 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
288 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
289 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
291 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
292 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
293 [NL80211_ATTR_PID] = { .type = NLA_U32 },
294 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
295 [NL80211_ATTR_PMKID] = { .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_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
352 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
353 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
354 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
355 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
356 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
357 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
358 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
359 .len = NL80211_VHT_CAPABILITY_LEN,
360 },
361 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
362 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
363 .len = IEEE80211_MAX_DATA_LEN },
364 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
365 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
366 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
367 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
368 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
369 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
370 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
371 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
372 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
373 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
374 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
375 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
376 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
377 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
378 .len = IEEE80211_QOS_MAP_LEN_MAX },
379 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
380 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
381 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
382 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
383 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
384 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
385 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
386 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
387 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
388 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
389 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
390 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
391 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
392 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
393 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
394 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
395 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
396 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
397 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
398 .len = VHT_MUMIMO_GROUPS_DATA_LEN
399 },
400 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
401 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
402 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
403 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
404 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
405 .len = FILS_MAX_KEK_LEN },
406 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
407 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
408 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
409 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
410 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
411 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
412 },
413 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
414 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
415 .len = FILS_ERP_MAX_USERNAME_LEN },
416 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
417 .len = FILS_ERP_MAX_REALM_LEN },
418 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
419 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
420 .len = FILS_ERP_MAX_RRK_LEN },
421 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
422 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
423 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
424 };
425
426 /* policy for the key attributes */
427 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
428 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
429 [NL80211_KEY_IDX] = { .type = NLA_U8 },
430 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
431 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
432 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
433 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
434 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
435 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
436 };
437
438 /* policy for the key default flags */
439 static const struct nla_policy
440 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
441 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
442 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
443 };
444
445 #ifdef CONFIG_PM
446 /* policy for WoWLAN attributes */
447 static const struct nla_policy
448 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
449 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
450 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
451 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
452 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
453 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
454 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
455 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
456 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
457 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
458 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
459 };
460
461 static const struct nla_policy
462 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
463 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
464 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
465 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
466 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
467 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
468 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
469 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
470 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
471 },
472 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
473 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
474 },
475 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
476 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
477 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
478 };
479 #endif /* CONFIG_PM */
480
481 /* policy for coalesce rule attributes */
482 static const struct nla_policy
483 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
484 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
485 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
486 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
487 };
488
489 /* policy for GTK rekey offload attributes */
490 static const struct nla_policy
491 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
492 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
493 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
494 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
495 };
496
497 static const struct nla_policy
498 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
499 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
500 .len = IEEE80211_MAX_SSID_LEN },
501 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
502 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
503 };
504
505 static const struct nla_policy
506 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
507 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
508 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
509 };
510
511 static const struct nla_policy
512 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
513 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
514 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
515 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
516 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
517 },
518 };
519
520 /* policy for NAN function attributes */
521 static const struct nla_policy
522 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
523 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
524 [NL80211_NAN_FUNC_SERVICE_ID] = {
525 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
526 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
527 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
528 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
529 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
530 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
531 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
532 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
533 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
534 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
535 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
536 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
537 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
538 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
539 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
540 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
541 };
542
543 /* policy for Service Response Filter attributes */
544 static const struct nla_policy
545 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
546 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
547 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
548 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
549 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
550 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
551 };
552
553 /* policy for packet pattern attributes */
554 static const struct nla_policy
555 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
556 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
557 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
558 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
559 };
560
561 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
562 struct netlink_callback *cb,
563 struct cfg80211_registered_device **rdev,
564 struct wireless_dev **wdev)
565 {
566 int err;
567
568 if (!cb->args[0]) {
569 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
570 genl_family_attrbuf(&nl80211_fam),
571 nl80211_fam.maxattr, nl80211_policy, NULL);
572 if (err)
573 return err;
574
575 *wdev = __cfg80211_wdev_from_attrs(
576 sock_net(skb->sk),
577 genl_family_attrbuf(&nl80211_fam));
578 if (IS_ERR(*wdev))
579 return PTR_ERR(*wdev);
580 *rdev = wiphy_to_rdev((*wdev)->wiphy);
581 /* 0 is the first index - add 1 to parse only once */
582 cb->args[0] = (*rdev)->wiphy_idx + 1;
583 cb->args[1] = (*wdev)->identifier;
584 } else {
585 /* subtract the 1 again here */
586 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
587 struct wireless_dev *tmp;
588
589 if (!wiphy)
590 return -ENODEV;
591 *rdev = wiphy_to_rdev(wiphy);
592 *wdev = NULL;
593
594 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
595 if (tmp->identifier == cb->args[1]) {
596 *wdev = tmp;
597 break;
598 }
599 }
600
601 if (!*wdev)
602 return -ENODEV;
603 }
604
605 return 0;
606 }
607
608 /* IE validation */
609 static bool is_valid_ie_attr(const struct nlattr *attr)
610 {
611 const u8 *pos;
612 int len;
613
614 if (!attr)
615 return true;
616
617 pos = nla_data(attr);
618 len = nla_len(attr);
619
620 while (len) {
621 u8 elemlen;
622
623 if (len < 2)
624 return false;
625 len -= 2;
626
627 elemlen = pos[1];
628 if (elemlen > len)
629 return false;
630
631 len -= elemlen;
632 pos += 2 + elemlen;
633 }
634
635 return true;
636 }
637
638 /* message building helper */
639 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
640 int flags, u8 cmd)
641 {
642 /* since there is no private header just add the generic one */
643 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
644 }
645
646 static int nl80211_msg_put_channel(struct sk_buff *msg,
647 struct ieee80211_channel *chan,
648 bool large)
649 {
650 /* Some channels must be completely excluded from the
651 * list to protect old user-space tools from breaking
652 */
653 if (!large && chan->flags &
654 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
655 return 0;
656
657 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
658 chan->center_freq))
659 goto nla_put_failure;
660
661 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
662 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
663 goto nla_put_failure;
664 if (chan->flags & IEEE80211_CHAN_NO_IR) {
665 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
666 goto nla_put_failure;
667 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
668 goto nla_put_failure;
669 }
670 if (chan->flags & IEEE80211_CHAN_RADAR) {
671 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
672 goto nla_put_failure;
673 if (large) {
674 u32 time;
675
676 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
677
678 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
679 chan->dfs_state))
680 goto nla_put_failure;
681 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
682 time))
683 goto nla_put_failure;
684 if (nla_put_u32(msg,
685 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
686 chan->dfs_cac_ms))
687 goto nla_put_failure;
688 }
689 }
690
691 if (large) {
692 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
694 goto nla_put_failure;
695 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
697 goto nla_put_failure;
698 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
700 goto nla_put_failure;
701 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
703 goto nla_put_failure;
704 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
706 goto nla_put_failure;
707 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
708 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
709 goto nla_put_failure;
710 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
711 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
712 goto nla_put_failure;
713 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
714 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
715 goto nla_put_failure;
716 }
717
718 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
719 DBM_TO_MBM(chan->max_power)))
720 goto nla_put_failure;
721
722 return 0;
723
724 nla_put_failure:
725 return -ENOBUFS;
726 }
727
728 /* netlink command implementations */
729
730 struct key_parse {
731 struct key_params p;
732 int idx;
733 int type;
734 bool def, defmgmt;
735 bool def_uni, def_multi;
736 };
737
738 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
739 {
740 struct nlattr *tb[NL80211_KEY_MAX + 1];
741 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
742 nl80211_key_policy, NULL);
743 if (err)
744 return err;
745
746 k->def = !!tb[NL80211_KEY_DEFAULT];
747 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
748
749 if (k->def) {
750 k->def_uni = true;
751 k->def_multi = true;
752 }
753 if (k->defmgmt)
754 k->def_multi = true;
755
756 if (tb[NL80211_KEY_IDX])
757 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
758
759 if (tb[NL80211_KEY_DATA]) {
760 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
761 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
762 }
763
764 if (tb[NL80211_KEY_SEQ]) {
765 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
766 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
767 }
768
769 if (tb[NL80211_KEY_CIPHER])
770 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
771
772 if (tb[NL80211_KEY_TYPE]) {
773 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
774 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
775 return -EINVAL;
776 }
777
778 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
779 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
780
781 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
782 tb[NL80211_KEY_DEFAULT_TYPES],
783 nl80211_key_default_policy, NULL);
784 if (err)
785 return err;
786
787 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
788 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
789 }
790
791 return 0;
792 }
793
794 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
795 {
796 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
797 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
798 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
799 }
800
801 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
802 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
803 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
804 }
805
806 if (info->attrs[NL80211_ATTR_KEY_IDX])
807 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
808
809 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
810 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
811
812 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
813 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
814
815 if (k->def) {
816 k->def_uni = true;
817 k->def_multi = true;
818 }
819 if (k->defmgmt)
820 k->def_multi = true;
821
822 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
823 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
824 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
825 return -EINVAL;
826 }
827
828 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
829 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
830 int err = nla_parse_nested(kdt,
831 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
832 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
833 nl80211_key_default_policy,
834 info->extack);
835 if (err)
836 return err;
837
838 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
839 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
840 }
841
842 return 0;
843 }
844
845 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
846 {
847 int err;
848
849 memset(k, 0, sizeof(*k));
850 k->idx = -1;
851 k->type = -1;
852
853 if (info->attrs[NL80211_ATTR_KEY])
854 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
855 else
856 err = nl80211_parse_key_old(info, k);
857
858 if (err)
859 return err;
860
861 if (k->def && k->defmgmt)
862 return -EINVAL;
863
864 if (k->defmgmt) {
865 if (k->def_uni || !k->def_multi)
866 return -EINVAL;
867 }
868
869 if (k->idx != -1) {
870 if (k->defmgmt) {
871 if (k->idx < 4 || k->idx > 5)
872 return -EINVAL;
873 } else if (k->def) {
874 if (k->idx < 0 || k->idx > 3)
875 return -EINVAL;
876 } else {
877 if (k->idx < 0 || k->idx > 5)
878 return -EINVAL;
879 }
880 }
881
882 return 0;
883 }
884
885 static struct cfg80211_cached_keys *
886 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
887 struct nlattr *keys, bool *no_ht)
888 {
889 struct key_parse parse;
890 struct nlattr *key;
891 struct cfg80211_cached_keys *result;
892 int rem, err, def = 0;
893 bool have_key = false;
894
895 nla_for_each_nested(key, keys, rem) {
896 have_key = true;
897 break;
898 }
899
900 if (!have_key)
901 return NULL;
902
903 result = kzalloc(sizeof(*result), GFP_KERNEL);
904 if (!result)
905 return ERR_PTR(-ENOMEM);
906
907 result->def = -1;
908
909 nla_for_each_nested(key, keys, rem) {
910 memset(&parse, 0, sizeof(parse));
911 parse.idx = -1;
912
913 err = nl80211_parse_key_new(key, &parse);
914 if (err)
915 goto error;
916 err = -EINVAL;
917 if (!parse.p.key)
918 goto error;
919 if (parse.idx < 0 || parse.idx > 3)
920 goto error;
921 if (parse.def) {
922 if (def)
923 goto error;
924 def = 1;
925 result->def = parse.idx;
926 if (!parse.def_uni || !parse.def_multi)
927 goto error;
928 } else if (parse.defmgmt)
929 goto error;
930 err = cfg80211_validate_key_settings(rdev, &parse.p,
931 parse.idx, false, NULL);
932 if (err)
933 goto error;
934 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
935 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
936 err = -EINVAL;
937 goto error;
938 }
939 result->params[parse.idx].cipher = parse.p.cipher;
940 result->params[parse.idx].key_len = parse.p.key_len;
941 result->params[parse.idx].key = result->data[parse.idx];
942 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
943
944 /* must be WEP key if we got here */
945 if (no_ht)
946 *no_ht = true;
947 }
948
949 if (result->def < 0) {
950 err = -EINVAL;
951 goto error;
952 }
953
954 return result;
955 error:
956 kfree(result);
957 return ERR_PTR(err);
958 }
959
960 static int nl80211_key_allowed(struct wireless_dev *wdev)
961 {
962 ASSERT_WDEV_LOCK(wdev);
963
964 switch (wdev->iftype) {
965 case NL80211_IFTYPE_AP:
966 case NL80211_IFTYPE_AP_VLAN:
967 case NL80211_IFTYPE_P2P_GO:
968 case NL80211_IFTYPE_MESH_POINT:
969 break;
970 case NL80211_IFTYPE_ADHOC:
971 case NL80211_IFTYPE_STATION:
972 case NL80211_IFTYPE_P2P_CLIENT:
973 if (!wdev->current_bss)
974 return -ENOLINK;
975 break;
976 case NL80211_IFTYPE_UNSPECIFIED:
977 case NL80211_IFTYPE_OCB:
978 case NL80211_IFTYPE_MONITOR:
979 case NL80211_IFTYPE_NAN:
980 case NL80211_IFTYPE_P2P_DEVICE:
981 case NL80211_IFTYPE_WDS:
982 case NUM_NL80211_IFTYPES:
983 return -EINVAL;
984 }
985
986 return 0;
987 }
988
989 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
990 struct nlattr *tb)
991 {
992 struct ieee80211_channel *chan;
993
994 if (tb == NULL)
995 return NULL;
996 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
997 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
998 return NULL;
999 return chan;
1000 }
1001
1002 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1003 {
1004 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1005 int i;
1006
1007 if (!nl_modes)
1008 goto nla_put_failure;
1009
1010 i = 0;
1011 while (ifmodes) {
1012 if ((ifmodes & 1) && nla_put_flag(msg, i))
1013 goto nla_put_failure;
1014 ifmodes >>= 1;
1015 i++;
1016 }
1017
1018 nla_nest_end(msg, nl_modes);
1019 return 0;
1020
1021 nla_put_failure:
1022 return -ENOBUFS;
1023 }
1024
1025 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1026 struct sk_buff *msg,
1027 bool large)
1028 {
1029 struct nlattr *nl_combis;
1030 int i, j;
1031
1032 nl_combis = nla_nest_start(msg,
1033 NL80211_ATTR_INTERFACE_COMBINATIONS);
1034 if (!nl_combis)
1035 goto nla_put_failure;
1036
1037 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1038 const struct ieee80211_iface_combination *c;
1039 struct nlattr *nl_combi, *nl_limits;
1040
1041 c = &wiphy->iface_combinations[i];
1042
1043 nl_combi = nla_nest_start(msg, i + 1);
1044 if (!nl_combi)
1045 goto nla_put_failure;
1046
1047 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1048 if (!nl_limits)
1049 goto nla_put_failure;
1050
1051 for (j = 0; j < c->n_limits; j++) {
1052 struct nlattr *nl_limit;
1053
1054 nl_limit = nla_nest_start(msg, j + 1);
1055 if (!nl_limit)
1056 goto nla_put_failure;
1057 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1058 c->limits[j].max))
1059 goto nla_put_failure;
1060 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1061 c->limits[j].types))
1062 goto nla_put_failure;
1063 nla_nest_end(msg, nl_limit);
1064 }
1065
1066 nla_nest_end(msg, nl_limits);
1067
1068 if (c->beacon_int_infra_match &&
1069 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1070 goto nla_put_failure;
1071 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1072 c->num_different_channels) ||
1073 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1074 c->max_interfaces))
1075 goto nla_put_failure;
1076 if (large &&
1077 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1078 c->radar_detect_widths) ||
1079 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1080 c->radar_detect_regions)))
1081 goto nla_put_failure;
1082 if (c->beacon_int_min_gcd &&
1083 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1084 c->beacon_int_min_gcd))
1085 goto nla_put_failure;
1086
1087 nla_nest_end(msg, nl_combi);
1088 }
1089
1090 nla_nest_end(msg, nl_combis);
1091
1092 return 0;
1093 nla_put_failure:
1094 return -ENOBUFS;
1095 }
1096
1097 #ifdef CONFIG_PM
1098 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1099 struct sk_buff *msg)
1100 {
1101 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1102 struct nlattr *nl_tcp;
1103
1104 if (!tcp)
1105 return 0;
1106
1107 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1108 if (!nl_tcp)
1109 return -ENOBUFS;
1110
1111 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1112 tcp->data_payload_max))
1113 return -ENOBUFS;
1114
1115 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1116 tcp->data_payload_max))
1117 return -ENOBUFS;
1118
1119 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1120 return -ENOBUFS;
1121
1122 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1123 sizeof(*tcp->tok), tcp->tok))
1124 return -ENOBUFS;
1125
1126 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1127 tcp->data_interval_max))
1128 return -ENOBUFS;
1129
1130 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1131 tcp->wake_payload_max))
1132 return -ENOBUFS;
1133
1134 nla_nest_end(msg, nl_tcp);
1135 return 0;
1136 }
1137
1138 static int nl80211_send_wowlan(struct sk_buff *msg,
1139 struct cfg80211_registered_device *rdev,
1140 bool large)
1141 {
1142 struct nlattr *nl_wowlan;
1143
1144 if (!rdev->wiphy.wowlan)
1145 return 0;
1146
1147 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1148 if (!nl_wowlan)
1149 return -ENOBUFS;
1150
1151 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1152 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1153 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1154 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1155 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1156 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1157 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1158 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1159 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1160 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1161 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1162 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1163 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1164 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1165 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1166 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1167 return -ENOBUFS;
1168
1169 if (rdev->wiphy.wowlan->n_patterns) {
1170 struct nl80211_pattern_support pat = {
1171 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1172 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1173 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1174 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1175 };
1176
1177 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1178 sizeof(pat), &pat))
1179 return -ENOBUFS;
1180 }
1181
1182 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1183 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1184 rdev->wiphy.wowlan->max_nd_match_sets))
1185 return -ENOBUFS;
1186
1187 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1188 return -ENOBUFS;
1189
1190 nla_nest_end(msg, nl_wowlan);
1191
1192 return 0;
1193 }
1194 #endif
1195
1196 static int nl80211_send_coalesce(struct sk_buff *msg,
1197 struct cfg80211_registered_device *rdev)
1198 {
1199 struct nl80211_coalesce_rule_support rule;
1200
1201 if (!rdev->wiphy.coalesce)
1202 return 0;
1203
1204 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1205 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1206 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1207 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1208 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1209 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1210
1211 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1212 return -ENOBUFS;
1213
1214 return 0;
1215 }
1216
1217 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1218 struct ieee80211_supported_band *sband)
1219 {
1220 struct nlattr *nl_rates, *nl_rate;
1221 struct ieee80211_rate *rate;
1222 int i;
1223
1224 /* add HT info */
1225 if (sband->ht_cap.ht_supported &&
1226 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1227 sizeof(sband->ht_cap.mcs),
1228 &sband->ht_cap.mcs) ||
1229 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1230 sband->ht_cap.cap) ||
1231 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1232 sband->ht_cap.ampdu_factor) ||
1233 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1234 sband->ht_cap.ampdu_density)))
1235 return -ENOBUFS;
1236
1237 /* add VHT info */
1238 if (sband->vht_cap.vht_supported &&
1239 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1240 sizeof(sband->vht_cap.vht_mcs),
1241 &sband->vht_cap.vht_mcs) ||
1242 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1243 sband->vht_cap.cap)))
1244 return -ENOBUFS;
1245
1246 /* add bitrates */
1247 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1248 if (!nl_rates)
1249 return -ENOBUFS;
1250
1251 for (i = 0; i < sband->n_bitrates; i++) {
1252 nl_rate = nla_nest_start(msg, i);
1253 if (!nl_rate)
1254 return -ENOBUFS;
1255
1256 rate = &sband->bitrates[i];
1257 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1258 rate->bitrate))
1259 return -ENOBUFS;
1260 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1261 nla_put_flag(msg,
1262 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1263 return -ENOBUFS;
1264
1265 nla_nest_end(msg, nl_rate);
1266 }
1267
1268 nla_nest_end(msg, nl_rates);
1269
1270 return 0;
1271 }
1272
1273 static int
1274 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1275 const struct ieee80211_txrx_stypes *mgmt_stypes)
1276 {
1277 u16 stypes;
1278 struct nlattr *nl_ftypes, *nl_ifs;
1279 enum nl80211_iftype ift;
1280 int i;
1281
1282 if (!mgmt_stypes)
1283 return 0;
1284
1285 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1286 if (!nl_ifs)
1287 return -ENOBUFS;
1288
1289 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1290 nl_ftypes = nla_nest_start(msg, ift);
1291 if (!nl_ftypes)
1292 return -ENOBUFS;
1293 i = 0;
1294 stypes = mgmt_stypes[ift].tx;
1295 while (stypes) {
1296 if ((stypes & 1) &&
1297 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1298 (i << 4) | IEEE80211_FTYPE_MGMT))
1299 return -ENOBUFS;
1300 stypes >>= 1;
1301 i++;
1302 }
1303 nla_nest_end(msg, nl_ftypes);
1304 }
1305
1306 nla_nest_end(msg, nl_ifs);
1307
1308 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1309 if (!nl_ifs)
1310 return -ENOBUFS;
1311
1312 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1313 nl_ftypes = nla_nest_start(msg, ift);
1314 if (!nl_ftypes)
1315 return -ENOBUFS;
1316 i = 0;
1317 stypes = mgmt_stypes[ift].rx;
1318 while (stypes) {
1319 if ((stypes & 1) &&
1320 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1321 (i << 4) | IEEE80211_FTYPE_MGMT))
1322 return -ENOBUFS;
1323 stypes >>= 1;
1324 i++;
1325 }
1326 nla_nest_end(msg, nl_ftypes);
1327 }
1328 nla_nest_end(msg, nl_ifs);
1329
1330 return 0;
1331 }
1332
1333 #define CMD(op, n) \
1334 do { \
1335 if (rdev->ops->op) { \
1336 i++; \
1337 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1338 goto nla_put_failure; \
1339 } \
1340 } while (0)
1341
1342 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1343 struct sk_buff *msg)
1344 {
1345 int i = 0;
1346
1347 /*
1348 * do *NOT* add anything into this function, new things need to be
1349 * advertised only to new versions of userspace that can deal with
1350 * the split (and they can't possibly care about new features...
1351 */
1352 CMD(add_virtual_intf, NEW_INTERFACE);
1353 CMD(change_virtual_intf, SET_INTERFACE);
1354 CMD(add_key, NEW_KEY);
1355 CMD(start_ap, START_AP);
1356 CMD(add_station, NEW_STATION);
1357 CMD(add_mpath, NEW_MPATH);
1358 CMD(update_mesh_config, SET_MESH_CONFIG);
1359 CMD(change_bss, SET_BSS);
1360 CMD(auth, AUTHENTICATE);
1361 CMD(assoc, ASSOCIATE);
1362 CMD(deauth, DEAUTHENTICATE);
1363 CMD(disassoc, DISASSOCIATE);
1364 CMD(join_ibss, JOIN_IBSS);
1365 CMD(join_mesh, JOIN_MESH);
1366 CMD(set_pmksa, SET_PMKSA);
1367 CMD(del_pmksa, DEL_PMKSA);
1368 CMD(flush_pmksa, FLUSH_PMKSA);
1369 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1370 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1371 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1372 CMD(mgmt_tx, FRAME);
1373 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1374 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1375 i++;
1376 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1377 goto nla_put_failure;
1378 }
1379 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1380 rdev->ops->join_mesh) {
1381 i++;
1382 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1383 goto nla_put_failure;
1384 }
1385 CMD(set_wds_peer, SET_WDS_PEER);
1386 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1387 CMD(tdls_mgmt, TDLS_MGMT);
1388 CMD(tdls_oper, TDLS_OPER);
1389 }
1390 if (rdev->wiphy.max_sched_scan_reqs)
1391 CMD(sched_scan_start, START_SCHED_SCAN);
1392 CMD(probe_client, PROBE_CLIENT);
1393 CMD(set_noack_map, SET_NOACK_MAP);
1394 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1395 i++;
1396 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1397 goto nla_put_failure;
1398 }
1399 CMD(start_p2p_device, START_P2P_DEVICE);
1400 CMD(set_mcast_rate, SET_MCAST_RATE);
1401 #ifdef CONFIG_NL80211_TESTMODE
1402 CMD(testmode_cmd, TESTMODE);
1403 #endif
1404
1405 if (rdev->ops->connect || rdev->ops->auth) {
1406 i++;
1407 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1408 goto nla_put_failure;
1409 }
1410
1411 if (rdev->ops->disconnect || rdev->ops->deauth) {
1412 i++;
1413 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1414 goto nla_put_failure;
1415 }
1416
1417 return i;
1418 nla_put_failure:
1419 return -ENOBUFS;
1420 }
1421
1422 struct nl80211_dump_wiphy_state {
1423 s64 filter_wiphy;
1424 long start;
1425 long split_start, band_start, chan_start, capa_start;
1426 bool split;
1427 };
1428
1429 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1430 enum nl80211_commands cmd,
1431 struct sk_buff *msg, u32 portid, u32 seq,
1432 int flags, struct nl80211_dump_wiphy_state *state)
1433 {
1434 void *hdr;
1435 struct nlattr *nl_bands, *nl_band;
1436 struct nlattr *nl_freqs, *nl_freq;
1437 struct nlattr *nl_cmds;
1438 enum nl80211_band band;
1439 struct ieee80211_channel *chan;
1440 int i;
1441 const struct ieee80211_txrx_stypes *mgmt_stypes =
1442 rdev->wiphy.mgmt_stypes;
1443 u32 features;
1444
1445 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1446 if (!hdr)
1447 return -ENOBUFS;
1448
1449 if (WARN_ON(!state))
1450 return -EINVAL;
1451
1452 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1453 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1454 wiphy_name(&rdev->wiphy)) ||
1455 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1456 cfg80211_rdev_list_generation))
1457 goto nla_put_failure;
1458
1459 if (cmd != NL80211_CMD_NEW_WIPHY)
1460 goto finish;
1461
1462 switch (state->split_start) {
1463 case 0:
1464 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1465 rdev->wiphy.retry_short) ||
1466 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1467 rdev->wiphy.retry_long) ||
1468 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1469 rdev->wiphy.frag_threshold) ||
1470 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1471 rdev->wiphy.rts_threshold) ||
1472 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1473 rdev->wiphy.coverage_class) ||
1474 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1475 rdev->wiphy.max_scan_ssids) ||
1476 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1477 rdev->wiphy.max_sched_scan_ssids) ||
1478 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1479 rdev->wiphy.max_scan_ie_len) ||
1480 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1481 rdev->wiphy.max_sched_scan_ie_len) ||
1482 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1483 rdev->wiphy.max_match_sets) ||
1484 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1485 rdev->wiphy.max_sched_scan_plans) ||
1486 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1487 rdev->wiphy.max_sched_scan_plan_interval) ||
1488 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1489 rdev->wiphy.max_sched_scan_plan_iterations))
1490 goto nla_put_failure;
1491
1492 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1493 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1494 goto nla_put_failure;
1495 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1496 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1497 goto nla_put_failure;
1498 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1499 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1500 goto nla_put_failure;
1501 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1502 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1503 goto nla_put_failure;
1504 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1505 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1506 goto nla_put_failure;
1507 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1508 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1509 goto nla_put_failure;
1510 state->split_start++;
1511 if (state->split)
1512 break;
1513 case 1:
1514 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1515 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1516 rdev->wiphy.cipher_suites))
1517 goto nla_put_failure;
1518
1519 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1520 rdev->wiphy.max_num_pmkids))
1521 goto nla_put_failure;
1522
1523 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1524 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1525 goto nla_put_failure;
1526
1527 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1528 rdev->wiphy.available_antennas_tx) ||
1529 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1530 rdev->wiphy.available_antennas_rx))
1531 goto nla_put_failure;
1532
1533 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1534 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1535 rdev->wiphy.probe_resp_offload))
1536 goto nla_put_failure;
1537
1538 if ((rdev->wiphy.available_antennas_tx ||
1539 rdev->wiphy.available_antennas_rx) &&
1540 rdev->ops->get_antenna) {
1541 u32 tx_ant = 0, rx_ant = 0;
1542 int res;
1543
1544 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1545 if (!res) {
1546 if (nla_put_u32(msg,
1547 NL80211_ATTR_WIPHY_ANTENNA_TX,
1548 tx_ant) ||
1549 nla_put_u32(msg,
1550 NL80211_ATTR_WIPHY_ANTENNA_RX,
1551 rx_ant))
1552 goto nla_put_failure;
1553 }
1554 }
1555
1556 state->split_start++;
1557 if (state->split)
1558 break;
1559 case 2:
1560 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1561 rdev->wiphy.interface_modes))
1562 goto nla_put_failure;
1563 state->split_start++;
1564 if (state->split)
1565 break;
1566 case 3:
1567 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1568 if (!nl_bands)
1569 goto nla_put_failure;
1570
1571 for (band = state->band_start;
1572 band < NUM_NL80211_BANDS; band++) {
1573 struct ieee80211_supported_band *sband;
1574
1575 sband = rdev->wiphy.bands[band];
1576
1577 if (!sband)
1578 continue;
1579
1580 nl_band = nla_nest_start(msg, band);
1581 if (!nl_band)
1582 goto nla_put_failure;
1583
1584 switch (state->chan_start) {
1585 case 0:
1586 if (nl80211_send_band_rateinfo(msg, sband))
1587 goto nla_put_failure;
1588 state->chan_start++;
1589 if (state->split)
1590 break;
1591 default:
1592 /* add frequencies */
1593 nl_freqs = nla_nest_start(
1594 msg, NL80211_BAND_ATTR_FREQS);
1595 if (!nl_freqs)
1596 goto nla_put_failure;
1597
1598 for (i = state->chan_start - 1;
1599 i < sband->n_channels;
1600 i++) {
1601 nl_freq = nla_nest_start(msg, i);
1602 if (!nl_freq)
1603 goto nla_put_failure;
1604
1605 chan = &sband->channels[i];
1606
1607 if (nl80211_msg_put_channel(
1608 msg, chan,
1609 state->split))
1610 goto nla_put_failure;
1611
1612 nla_nest_end(msg, nl_freq);
1613 if (state->split)
1614 break;
1615 }
1616 if (i < sband->n_channels)
1617 state->chan_start = i + 2;
1618 else
1619 state->chan_start = 0;
1620 nla_nest_end(msg, nl_freqs);
1621 }
1622
1623 nla_nest_end(msg, nl_band);
1624
1625 if (state->split) {
1626 /* start again here */
1627 if (state->chan_start)
1628 band--;
1629 break;
1630 }
1631 }
1632 nla_nest_end(msg, nl_bands);
1633
1634 if (band < NUM_NL80211_BANDS)
1635 state->band_start = band + 1;
1636 else
1637 state->band_start = 0;
1638
1639 /* if bands & channels are done, continue outside */
1640 if (state->band_start == 0 && state->chan_start == 0)
1641 state->split_start++;
1642 if (state->split)
1643 break;
1644 case 4:
1645 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1646 if (!nl_cmds)
1647 goto nla_put_failure;
1648
1649 i = nl80211_add_commands_unsplit(rdev, msg);
1650 if (i < 0)
1651 goto nla_put_failure;
1652 if (state->split) {
1653 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1654 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1655 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1656 CMD(channel_switch, CHANNEL_SWITCH);
1657 CMD(set_qos_map, SET_QOS_MAP);
1658 if (rdev->wiphy.features &
1659 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1660 CMD(add_tx_ts, ADD_TX_TS);
1661 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1662 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1663 }
1664 #undef CMD
1665
1666 nla_nest_end(msg, nl_cmds);
1667 state->split_start++;
1668 if (state->split)
1669 break;
1670 case 5:
1671 if (rdev->ops->remain_on_channel &&
1672 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1673 nla_put_u32(msg,
1674 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1675 rdev->wiphy.max_remain_on_channel_duration))
1676 goto nla_put_failure;
1677
1678 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1679 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1680 goto nla_put_failure;
1681
1682 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1683 goto nla_put_failure;
1684 state->split_start++;
1685 if (state->split)
1686 break;
1687 case 6:
1688 #ifdef CONFIG_PM
1689 if (nl80211_send_wowlan(msg, rdev, state->split))
1690 goto nla_put_failure;
1691 state->split_start++;
1692 if (state->split)
1693 break;
1694 #else
1695 state->split_start++;
1696 #endif
1697 case 7:
1698 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1699 rdev->wiphy.software_iftypes))
1700 goto nla_put_failure;
1701
1702 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1703 state->split))
1704 goto nla_put_failure;
1705
1706 state->split_start++;
1707 if (state->split)
1708 break;
1709 case 8:
1710 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1711 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1712 rdev->wiphy.ap_sme_capa))
1713 goto nla_put_failure;
1714
1715 features = rdev->wiphy.features;
1716 /*
1717 * We can only add the per-channel limit information if the
1718 * dump is split, otherwise it makes it too big. Therefore
1719 * only advertise it in that case.
1720 */
1721 if (state->split)
1722 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1723 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1724 goto nla_put_failure;
1725
1726 if (rdev->wiphy.ht_capa_mod_mask &&
1727 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1728 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1729 rdev->wiphy.ht_capa_mod_mask))
1730 goto nla_put_failure;
1731
1732 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1733 rdev->wiphy.max_acl_mac_addrs &&
1734 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1735 rdev->wiphy.max_acl_mac_addrs))
1736 goto nla_put_failure;
1737
1738 /*
1739 * Any information below this point is only available to
1740 * applications that can deal with it being split. This
1741 * helps ensure that newly added capabilities don't break
1742 * older tools by overrunning their buffers.
1743 *
1744 * We still increment split_start so that in the split
1745 * case we'll continue with more data in the next round,
1746 * but break unconditionally so unsplit data stops here.
1747 */
1748 state->split_start++;
1749 break;
1750 case 9:
1751 if (rdev->wiphy.extended_capabilities &&
1752 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1753 rdev->wiphy.extended_capabilities_len,
1754 rdev->wiphy.extended_capabilities) ||
1755 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1756 rdev->wiphy.extended_capabilities_len,
1757 rdev->wiphy.extended_capabilities_mask)))
1758 goto nla_put_failure;
1759
1760 if (rdev->wiphy.vht_capa_mod_mask &&
1761 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1762 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1763 rdev->wiphy.vht_capa_mod_mask))
1764 goto nla_put_failure;
1765
1766 state->split_start++;
1767 break;
1768 case 10:
1769 if (nl80211_send_coalesce(msg, rdev))
1770 goto nla_put_failure;
1771
1772 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1773 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1774 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1775 goto nla_put_failure;
1776
1777 if (rdev->wiphy.max_ap_assoc_sta &&
1778 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1779 rdev->wiphy.max_ap_assoc_sta))
1780 goto nla_put_failure;
1781
1782 state->split_start++;
1783 break;
1784 case 11:
1785 if (rdev->wiphy.n_vendor_commands) {
1786 const struct nl80211_vendor_cmd_info *info;
1787 struct nlattr *nested;
1788
1789 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1790 if (!nested)
1791 goto nla_put_failure;
1792
1793 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1794 info = &rdev->wiphy.vendor_commands[i].info;
1795 if (nla_put(msg, i + 1, sizeof(*info), info))
1796 goto nla_put_failure;
1797 }
1798 nla_nest_end(msg, nested);
1799 }
1800
1801 if (rdev->wiphy.n_vendor_events) {
1802 const struct nl80211_vendor_cmd_info *info;
1803 struct nlattr *nested;
1804
1805 nested = nla_nest_start(msg,
1806 NL80211_ATTR_VENDOR_EVENTS);
1807 if (!nested)
1808 goto nla_put_failure;
1809
1810 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1811 info = &rdev->wiphy.vendor_events[i];
1812 if (nla_put(msg, i + 1, sizeof(*info), info))
1813 goto nla_put_failure;
1814 }
1815 nla_nest_end(msg, nested);
1816 }
1817 state->split_start++;
1818 break;
1819 case 12:
1820 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1821 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1822 rdev->wiphy.max_num_csa_counters))
1823 goto nla_put_failure;
1824
1825 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1826 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1827 goto nla_put_failure;
1828
1829 if (rdev->wiphy.max_sched_scan_reqs &&
1830 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1831 rdev->wiphy.max_sched_scan_reqs))
1832 goto nla_put_failure;
1833
1834 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1835 sizeof(rdev->wiphy.ext_features),
1836 rdev->wiphy.ext_features))
1837 goto nla_put_failure;
1838
1839 if (rdev->wiphy.bss_select_support) {
1840 struct nlattr *nested;
1841 u32 bss_select_support = rdev->wiphy.bss_select_support;
1842
1843 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1844 if (!nested)
1845 goto nla_put_failure;
1846
1847 i = 0;
1848 while (bss_select_support) {
1849 if ((bss_select_support & 1) &&
1850 nla_put_flag(msg, i))
1851 goto nla_put_failure;
1852 i++;
1853 bss_select_support >>= 1;
1854 }
1855 nla_nest_end(msg, nested);
1856 }
1857
1858 state->split_start++;
1859 break;
1860 case 13:
1861 if (rdev->wiphy.num_iftype_ext_capab &&
1862 rdev->wiphy.iftype_ext_capab) {
1863 struct nlattr *nested_ext_capab, *nested;
1864
1865 nested = nla_nest_start(msg,
1866 NL80211_ATTR_IFTYPE_EXT_CAPA);
1867 if (!nested)
1868 goto nla_put_failure;
1869
1870 for (i = state->capa_start;
1871 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1872 const struct wiphy_iftype_ext_capab *capab;
1873
1874 capab = &rdev->wiphy.iftype_ext_capab[i];
1875
1876 nested_ext_capab = nla_nest_start(msg, i);
1877 if (!nested_ext_capab ||
1878 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1879 capab->iftype) ||
1880 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1881 capab->extended_capabilities_len,
1882 capab->extended_capabilities) ||
1883 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1884 capab->extended_capabilities_len,
1885 capab->extended_capabilities_mask))
1886 goto nla_put_failure;
1887
1888 nla_nest_end(msg, nested_ext_capab);
1889 if (state->split)
1890 break;
1891 }
1892 nla_nest_end(msg, nested);
1893 if (i < rdev->wiphy.num_iftype_ext_capab) {
1894 state->capa_start = i + 1;
1895 break;
1896 }
1897 }
1898
1899 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1900 rdev->wiphy.nan_supported_bands))
1901 goto nla_put_failure;
1902
1903 /* done */
1904 state->split_start = 0;
1905 break;
1906 }
1907 finish:
1908 genlmsg_end(msg, hdr);
1909 return 0;
1910
1911 nla_put_failure:
1912 genlmsg_cancel(msg, hdr);
1913 return -EMSGSIZE;
1914 }
1915
1916 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1917 struct netlink_callback *cb,
1918 struct nl80211_dump_wiphy_state *state)
1919 {
1920 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1921 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1922 nl80211_fam.maxattr, nl80211_policy, NULL);
1923 /* ignore parse errors for backward compatibility */
1924 if (ret)
1925 return 0;
1926
1927 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1928 if (tb[NL80211_ATTR_WIPHY])
1929 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1930 if (tb[NL80211_ATTR_WDEV])
1931 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1932 if (tb[NL80211_ATTR_IFINDEX]) {
1933 struct net_device *netdev;
1934 struct cfg80211_registered_device *rdev;
1935 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1936
1937 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1938 if (!netdev)
1939 return -ENODEV;
1940 if (netdev->ieee80211_ptr) {
1941 rdev = wiphy_to_rdev(
1942 netdev->ieee80211_ptr->wiphy);
1943 state->filter_wiphy = rdev->wiphy_idx;
1944 }
1945 }
1946
1947 return 0;
1948 }
1949
1950 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1951 {
1952 int idx = 0, ret;
1953 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1954 struct cfg80211_registered_device *rdev;
1955
1956 rtnl_lock();
1957 if (!state) {
1958 state = kzalloc(sizeof(*state), GFP_KERNEL);
1959 if (!state) {
1960 rtnl_unlock();
1961 return -ENOMEM;
1962 }
1963 state->filter_wiphy = -1;
1964 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1965 if (ret) {
1966 kfree(state);
1967 rtnl_unlock();
1968 return ret;
1969 }
1970 cb->args[0] = (long)state;
1971 }
1972
1973 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1974 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1975 continue;
1976 if (++idx <= state->start)
1977 continue;
1978 if (state->filter_wiphy != -1 &&
1979 state->filter_wiphy != rdev->wiphy_idx)
1980 continue;
1981 /* attempt to fit multiple wiphy data chunks into the skb */
1982 do {
1983 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1984 skb,
1985 NETLINK_CB(cb->skb).portid,
1986 cb->nlh->nlmsg_seq,
1987 NLM_F_MULTI, state);
1988 if (ret < 0) {
1989 /*
1990 * If sending the wiphy data didn't fit (ENOBUFS
1991 * or EMSGSIZE returned), this SKB is still
1992 * empty (so it's not too big because another
1993 * wiphy dataset is already in the skb) and
1994 * we've not tried to adjust the dump allocation
1995 * yet ... then adjust the alloc size to be
1996 * bigger, and return 1 but with the empty skb.
1997 * This results in an empty message being RX'ed
1998 * in userspace, but that is ignored.
1999 *
2000 * We can then retry with the larger buffer.
2001 */
2002 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2003 !skb->len && !state->split &&
2004 cb->min_dump_alloc < 4096) {
2005 cb->min_dump_alloc = 4096;
2006 state->split_start = 0;
2007 rtnl_unlock();
2008 return 1;
2009 }
2010 idx--;
2011 break;
2012 }
2013 } while (state->split_start > 0);
2014 break;
2015 }
2016 rtnl_unlock();
2017
2018 state->start = idx;
2019
2020 return skb->len;
2021 }
2022
2023 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2024 {
2025 kfree((void *)cb->args[0]);
2026 return 0;
2027 }
2028
2029 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2030 {
2031 struct sk_buff *msg;
2032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2033 struct nl80211_dump_wiphy_state state = {};
2034
2035 msg = nlmsg_new(4096, GFP_KERNEL);
2036 if (!msg)
2037 return -ENOMEM;
2038
2039 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2040 info->snd_portid, info->snd_seq, 0,
2041 &state) < 0) {
2042 nlmsg_free(msg);
2043 return -ENOBUFS;
2044 }
2045
2046 return genlmsg_reply(msg, info);
2047 }
2048
2049 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2050 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2051 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2052 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2053 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2054 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2055 };
2056
2057 static int parse_txq_params(struct nlattr *tb[],
2058 struct ieee80211_txq_params *txq_params)
2059 {
2060 u8 ac;
2061
2062 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2063 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2064 !tb[NL80211_TXQ_ATTR_AIFS])
2065 return -EINVAL;
2066
2067 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2068 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2069 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2070 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2071 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2072
2073 if (ac >= NL80211_NUM_ACS)
2074 return -EINVAL;
2075 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2076 return 0;
2077 }
2078
2079 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2080 {
2081 /*
2082 * You can only set the channel explicitly for WDS interfaces,
2083 * all others have their channel managed via their respective
2084 * "establish a connection" command (connect, join, ...)
2085 *
2086 * For AP/GO and mesh mode, the channel can be set with the
2087 * channel userspace API, but is only stored and passed to the
2088 * low-level driver when the AP starts or the mesh is joined.
2089 * This is for backward compatibility, userspace can also give
2090 * the channel in the start-ap or join-mesh commands instead.
2091 *
2092 * Monitors are special as they are normally slaved to
2093 * whatever else is going on, so they have their own special
2094 * operation to set the monitor channel if possible.
2095 */
2096 return !wdev ||
2097 wdev->iftype == NL80211_IFTYPE_AP ||
2098 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2099 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2100 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2101 }
2102
2103 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2104 struct genl_info *info,
2105 struct cfg80211_chan_def *chandef)
2106 {
2107 u32 control_freq;
2108
2109 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2110 return -EINVAL;
2111
2112 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2113
2114 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2115 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2116 chandef->center_freq1 = control_freq;
2117 chandef->center_freq2 = 0;
2118
2119 /* Primary channel not allowed */
2120 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2121 return -EINVAL;
2122
2123 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2124 enum nl80211_channel_type chantype;
2125
2126 chantype = nla_get_u32(
2127 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2128
2129 switch (chantype) {
2130 case NL80211_CHAN_NO_HT:
2131 case NL80211_CHAN_HT20:
2132 case NL80211_CHAN_HT40PLUS:
2133 case NL80211_CHAN_HT40MINUS:
2134 cfg80211_chandef_create(chandef, chandef->chan,
2135 chantype);
2136 /* user input for center_freq is incorrect */
2137 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2138 chandef->center_freq1 != nla_get_u32(
2139 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2140 return -EINVAL;
2141 /* center_freq2 must be zero */
2142 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2143 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2144 return -EINVAL;
2145 break;
2146 default:
2147 return -EINVAL;
2148 }
2149 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2150 chandef->width =
2151 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2152 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2153 chandef->center_freq1 =
2154 nla_get_u32(
2155 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2156 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2157 chandef->center_freq2 =
2158 nla_get_u32(
2159 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2160 }
2161
2162 if (!cfg80211_chandef_valid(chandef))
2163 return -EINVAL;
2164
2165 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2166 IEEE80211_CHAN_DISABLED))
2167 return -EINVAL;
2168
2169 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2170 chandef->width == NL80211_CHAN_WIDTH_10) &&
2171 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2172 return -EINVAL;
2173
2174 return 0;
2175 }
2176
2177 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2178 struct net_device *dev,
2179 struct genl_info *info)
2180 {
2181 struct cfg80211_chan_def chandef;
2182 int result;
2183 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2184 struct wireless_dev *wdev = NULL;
2185
2186 if (dev)
2187 wdev = dev->ieee80211_ptr;
2188 if (!nl80211_can_set_dev_channel(wdev))
2189 return -EOPNOTSUPP;
2190 if (wdev)
2191 iftype = wdev->iftype;
2192
2193 result = nl80211_parse_chandef(rdev, info, &chandef);
2194 if (result)
2195 return result;
2196
2197 switch (iftype) {
2198 case NL80211_IFTYPE_AP:
2199 case NL80211_IFTYPE_P2P_GO:
2200 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2201 iftype)) {
2202 result = -EINVAL;
2203 break;
2204 }
2205 if (wdev->beacon_interval) {
2206 if (!dev || !rdev->ops->set_ap_chanwidth ||
2207 !(rdev->wiphy.features &
2208 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2209 result = -EBUSY;
2210 break;
2211 }
2212
2213 /* Only allow dynamic channel width changes */
2214 if (chandef.chan != wdev->preset_chandef.chan) {
2215 result = -EBUSY;
2216 break;
2217 }
2218 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2219 if (result)
2220 break;
2221 }
2222 wdev->preset_chandef = chandef;
2223 result = 0;
2224 break;
2225 case NL80211_IFTYPE_MESH_POINT:
2226 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2227 break;
2228 case NL80211_IFTYPE_MONITOR:
2229 result = cfg80211_set_monitor_channel(rdev, &chandef);
2230 break;
2231 default:
2232 result = -EINVAL;
2233 }
2234
2235 return result;
2236 }
2237
2238 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2239 {
2240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2241 struct net_device *netdev = info->user_ptr[1];
2242
2243 return __nl80211_set_channel(rdev, netdev, info);
2244 }
2245
2246 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2247 {
2248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2249 struct net_device *dev = info->user_ptr[1];
2250 struct wireless_dev *wdev = dev->ieee80211_ptr;
2251 const u8 *bssid;
2252
2253 if (!info->attrs[NL80211_ATTR_MAC])
2254 return -EINVAL;
2255
2256 if (netif_running(dev))
2257 return -EBUSY;
2258
2259 if (!rdev->ops->set_wds_peer)
2260 return -EOPNOTSUPP;
2261
2262 if (wdev->iftype != NL80211_IFTYPE_WDS)
2263 return -EOPNOTSUPP;
2264
2265 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2266 return rdev_set_wds_peer(rdev, dev, bssid);
2267 }
2268
2269 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2270 {
2271 struct cfg80211_registered_device *rdev;
2272 struct net_device *netdev = NULL;
2273 struct wireless_dev *wdev;
2274 int result = 0, rem_txq_params = 0;
2275 struct nlattr *nl_txq_params;
2276 u32 changed;
2277 u8 retry_short = 0, retry_long = 0;
2278 u32 frag_threshold = 0, rts_threshold = 0;
2279 u8 coverage_class = 0;
2280
2281 ASSERT_RTNL();
2282
2283 /*
2284 * Try to find the wiphy and netdev. Normally this
2285 * function shouldn't need the netdev, but this is
2286 * done for backward compatibility -- previously
2287 * setting the channel was done per wiphy, but now
2288 * it is per netdev. Previous userland like hostapd
2289 * also passed a netdev to set_wiphy, so that it is
2290 * possible to let that go to the right netdev!
2291 */
2292
2293 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2294 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2295
2296 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2297 if (netdev && netdev->ieee80211_ptr)
2298 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2299 else
2300 netdev = NULL;
2301 }
2302
2303 if (!netdev) {
2304 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2305 info->attrs);
2306 if (IS_ERR(rdev))
2307 return PTR_ERR(rdev);
2308 wdev = NULL;
2309 netdev = NULL;
2310 result = 0;
2311 } else
2312 wdev = netdev->ieee80211_ptr;
2313
2314 /*
2315 * end workaround code, by now the rdev is available
2316 * and locked, and wdev may or may not be NULL.
2317 */
2318
2319 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2320 result = cfg80211_dev_rename(
2321 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2322
2323 if (result)
2324 return result;
2325
2326 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2327 struct ieee80211_txq_params txq_params;
2328 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2329
2330 if (!rdev->ops->set_txq_params)
2331 return -EOPNOTSUPP;
2332
2333 if (!netdev)
2334 return -EINVAL;
2335
2336 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2337 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2338 return -EINVAL;
2339
2340 if (!netif_running(netdev))
2341 return -ENETDOWN;
2342
2343 nla_for_each_nested(nl_txq_params,
2344 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2345 rem_txq_params) {
2346 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2347 nl_txq_params,
2348 txq_params_policy,
2349 info->extack);
2350 if (result)
2351 return result;
2352 result = parse_txq_params(tb, &txq_params);
2353 if (result)
2354 return result;
2355
2356 result = rdev_set_txq_params(rdev, netdev,
2357 &txq_params);
2358 if (result)
2359 return result;
2360 }
2361 }
2362
2363 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2364 result = __nl80211_set_channel(
2365 rdev,
2366 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2367 info);
2368 if (result)
2369 return result;
2370 }
2371
2372 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2373 struct wireless_dev *txp_wdev = wdev;
2374 enum nl80211_tx_power_setting type;
2375 int idx, mbm = 0;
2376
2377 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2378 txp_wdev = NULL;
2379
2380 if (!rdev->ops->set_tx_power)
2381 return -EOPNOTSUPP;
2382
2383 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2384 type = nla_get_u32(info->attrs[idx]);
2385
2386 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2387 (type != NL80211_TX_POWER_AUTOMATIC))
2388 return -EINVAL;
2389
2390 if (type != NL80211_TX_POWER_AUTOMATIC) {
2391 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2392 mbm = nla_get_u32(info->attrs[idx]);
2393 }
2394
2395 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2396 if (result)
2397 return result;
2398 }
2399
2400 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2401 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2402 u32 tx_ant, rx_ant;
2403
2404 if ((!rdev->wiphy.available_antennas_tx &&
2405 !rdev->wiphy.available_antennas_rx) ||
2406 !rdev->ops->set_antenna)
2407 return -EOPNOTSUPP;
2408
2409 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2410 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2411
2412 /* reject antenna configurations which don't match the
2413 * available antenna masks, except for the "all" mask */
2414 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2415 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2416 return -EINVAL;
2417
2418 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2419 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2420
2421 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2422 if (result)
2423 return result;
2424 }
2425
2426 changed = 0;
2427
2428 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2429 retry_short = nla_get_u8(
2430 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2431 if (retry_short == 0)
2432 return -EINVAL;
2433
2434 changed |= WIPHY_PARAM_RETRY_SHORT;
2435 }
2436
2437 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2438 retry_long = nla_get_u8(
2439 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2440 if (retry_long == 0)
2441 return -EINVAL;
2442
2443 changed |= WIPHY_PARAM_RETRY_LONG;
2444 }
2445
2446 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2447 frag_threshold = nla_get_u32(
2448 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2449 if (frag_threshold < 256)
2450 return -EINVAL;
2451
2452 if (frag_threshold != (u32) -1) {
2453 /*
2454 * Fragments (apart from the last one) are required to
2455 * have even length. Make the fragmentation code
2456 * simpler by stripping LSB should someone try to use
2457 * odd threshold value.
2458 */
2459 frag_threshold &= ~0x1;
2460 }
2461 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2462 }
2463
2464 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2465 rts_threshold = nla_get_u32(
2466 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2467 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2468 }
2469
2470 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2471 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2472 return -EINVAL;
2473
2474 coverage_class = nla_get_u8(
2475 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2476 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2477 }
2478
2479 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2480 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2481 return -EOPNOTSUPP;
2482
2483 changed |= WIPHY_PARAM_DYN_ACK;
2484 }
2485
2486 if (changed) {
2487 u8 old_retry_short, old_retry_long;
2488 u32 old_frag_threshold, old_rts_threshold;
2489 u8 old_coverage_class;
2490
2491 if (!rdev->ops->set_wiphy_params)
2492 return -EOPNOTSUPP;
2493
2494 old_retry_short = rdev->wiphy.retry_short;
2495 old_retry_long = rdev->wiphy.retry_long;
2496 old_frag_threshold = rdev->wiphy.frag_threshold;
2497 old_rts_threshold = rdev->wiphy.rts_threshold;
2498 old_coverage_class = rdev->wiphy.coverage_class;
2499
2500 if (changed & WIPHY_PARAM_RETRY_SHORT)
2501 rdev->wiphy.retry_short = retry_short;
2502 if (changed & WIPHY_PARAM_RETRY_LONG)
2503 rdev->wiphy.retry_long = retry_long;
2504 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2505 rdev->wiphy.frag_threshold = frag_threshold;
2506 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2507 rdev->wiphy.rts_threshold = rts_threshold;
2508 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2509 rdev->wiphy.coverage_class = coverage_class;
2510
2511 result = rdev_set_wiphy_params(rdev, changed);
2512 if (result) {
2513 rdev->wiphy.retry_short = old_retry_short;
2514 rdev->wiphy.retry_long = old_retry_long;
2515 rdev->wiphy.frag_threshold = old_frag_threshold;
2516 rdev->wiphy.rts_threshold = old_rts_threshold;
2517 rdev->wiphy.coverage_class = old_coverage_class;
2518 return result;
2519 }
2520 }
2521 return 0;
2522 }
2523
2524 static inline u64 wdev_id(struct wireless_dev *wdev)
2525 {
2526 return (u64)wdev->identifier |
2527 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2528 }
2529
2530 static int nl80211_send_chandef(struct sk_buff *msg,
2531 const struct cfg80211_chan_def *chandef)
2532 {
2533 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2534 return -EINVAL;
2535
2536 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2537 chandef->chan->center_freq))
2538 return -ENOBUFS;
2539 switch (chandef->width) {
2540 case NL80211_CHAN_WIDTH_20_NOHT:
2541 case NL80211_CHAN_WIDTH_20:
2542 case NL80211_CHAN_WIDTH_40:
2543 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2544 cfg80211_get_chandef_type(chandef)))
2545 return -ENOBUFS;
2546 break;
2547 default:
2548 break;
2549 }
2550 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2551 return -ENOBUFS;
2552 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2553 return -ENOBUFS;
2554 if (chandef->center_freq2 &&
2555 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2556 return -ENOBUFS;
2557 return 0;
2558 }
2559
2560 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2561 struct cfg80211_registered_device *rdev,
2562 struct wireless_dev *wdev, bool removal)
2563 {
2564 struct net_device *dev = wdev->netdev;
2565 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2566 void *hdr;
2567
2568 if (removal)
2569 cmd = NL80211_CMD_DEL_INTERFACE;
2570
2571 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2572 if (!hdr)
2573 return -1;
2574
2575 if (dev &&
2576 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2577 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2578 goto nla_put_failure;
2579
2580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2581 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2582 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2583 NL80211_ATTR_PAD) ||
2584 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2585 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2586 rdev->devlist_generation ^
2587 (cfg80211_rdev_list_generation << 2)))
2588 goto nla_put_failure;
2589
2590 if (rdev->ops->get_channel) {
2591 int ret;
2592 struct cfg80211_chan_def chandef;
2593
2594 ret = rdev_get_channel(rdev, wdev, &chandef);
2595 if (ret == 0) {
2596 if (nl80211_send_chandef(msg, &chandef))
2597 goto nla_put_failure;
2598 }
2599 }
2600
2601 if (rdev->ops->get_tx_power) {
2602 int dbm, ret;
2603
2604 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2605 if (ret == 0 &&
2606 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2607 DBM_TO_MBM(dbm)))
2608 goto nla_put_failure;
2609 }
2610
2611 wdev_lock(wdev);
2612 switch (wdev->iftype) {
2613 case NL80211_IFTYPE_AP:
2614 if (wdev->ssid_len &&
2615 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2616 goto nla_put_failure_locked;
2617 break;
2618 case NL80211_IFTYPE_STATION:
2619 case NL80211_IFTYPE_P2P_CLIENT:
2620 case NL80211_IFTYPE_ADHOC: {
2621 const u8 *ssid_ie;
2622 if (!wdev->current_bss)
2623 break;
2624 rcu_read_lock();
2625 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2626 WLAN_EID_SSID);
2627 if (ssid_ie &&
2628 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2629 goto nla_put_failure_rcu_locked;
2630 rcu_read_unlock();
2631 break;
2632 }
2633 default:
2634 /* nothing */
2635 break;
2636 }
2637 wdev_unlock(wdev);
2638
2639 genlmsg_end(msg, hdr);
2640 return 0;
2641
2642 nla_put_failure_rcu_locked:
2643 rcu_read_unlock();
2644 nla_put_failure_locked:
2645 wdev_unlock(wdev);
2646 nla_put_failure:
2647 genlmsg_cancel(msg, hdr);
2648 return -EMSGSIZE;
2649 }
2650
2651 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2652 {
2653 int wp_idx = 0;
2654 int if_idx = 0;
2655 int wp_start = cb->args[0];
2656 int if_start = cb->args[1];
2657 int filter_wiphy = -1;
2658 struct cfg80211_registered_device *rdev;
2659 struct wireless_dev *wdev;
2660 int ret;
2661
2662 rtnl_lock();
2663 if (!cb->args[2]) {
2664 struct nl80211_dump_wiphy_state state = {
2665 .filter_wiphy = -1,
2666 };
2667
2668 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2669 if (ret)
2670 goto out_unlock;
2671
2672 filter_wiphy = state.filter_wiphy;
2673
2674 /*
2675 * if filtering, set cb->args[2] to +1 since 0 is the default
2676 * value needed to determine that parsing is necessary.
2677 */
2678 if (filter_wiphy >= 0)
2679 cb->args[2] = filter_wiphy + 1;
2680 else
2681 cb->args[2] = -1;
2682 } else if (cb->args[2] > 0) {
2683 filter_wiphy = cb->args[2] - 1;
2684 }
2685
2686 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2687 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2688 continue;
2689 if (wp_idx < wp_start) {
2690 wp_idx++;
2691 continue;
2692 }
2693
2694 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2695 continue;
2696
2697 if_idx = 0;
2698
2699 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2700 if (if_idx < if_start) {
2701 if_idx++;
2702 continue;
2703 }
2704 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2705 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2706 rdev, wdev, false) < 0) {
2707 goto out;
2708 }
2709 if_idx++;
2710 }
2711
2712 wp_idx++;
2713 }
2714 out:
2715 cb->args[0] = wp_idx;
2716 cb->args[1] = if_idx;
2717
2718 ret = skb->len;
2719 out_unlock:
2720 rtnl_unlock();
2721
2722 return ret;
2723 }
2724
2725 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2726 {
2727 struct sk_buff *msg;
2728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2729 struct wireless_dev *wdev = info->user_ptr[1];
2730
2731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2732 if (!msg)
2733 return -ENOMEM;
2734
2735 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2736 rdev, wdev, false) < 0) {
2737 nlmsg_free(msg);
2738 return -ENOBUFS;
2739 }
2740
2741 return genlmsg_reply(msg, info);
2742 }
2743
2744 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2745 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2746 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2747 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2748 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2749 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2750 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2751 };
2752
2753 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2754 {
2755 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2756 int flag;
2757
2758 *mntrflags = 0;
2759
2760 if (!nla)
2761 return -EINVAL;
2762
2763 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2764 mntr_flags_policy, NULL))
2765 return -EINVAL;
2766
2767 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2768 if (flags[flag])
2769 *mntrflags |= (1<<flag);
2770
2771 *mntrflags |= MONITOR_FLAG_CHANGED;
2772
2773 return 0;
2774 }
2775
2776 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2777 enum nl80211_iftype type,
2778 struct genl_info *info,
2779 struct vif_params *params)
2780 {
2781 bool change = false;
2782 int err;
2783
2784 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2785 if (type != NL80211_IFTYPE_MONITOR)
2786 return -EINVAL;
2787
2788 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2789 &params->flags);
2790 if (err)
2791 return err;
2792
2793 change = true;
2794 }
2795
2796 if (params->flags & MONITOR_FLAG_ACTIVE &&
2797 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2798 return -EOPNOTSUPP;
2799
2800 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2801 const u8 *mumimo_groups;
2802 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2803
2804 if (type != NL80211_IFTYPE_MONITOR)
2805 return -EINVAL;
2806
2807 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2808 return -EOPNOTSUPP;
2809
2810 mumimo_groups =
2811 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2812
2813 /* bits 0 and 63 are reserved and must be zero */
2814 if ((mumimo_groups[0] & BIT(0)) ||
2815 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2816 return -EINVAL;
2817
2818 params->vht_mumimo_groups = mumimo_groups;
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 (type != NL80211_IFTYPE_MONITOR)
2826 return -EINVAL;
2827
2828 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2829 return -EOPNOTSUPP;
2830
2831 params->vht_mumimo_follow_addr =
2832 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2833 change = true;
2834 }
2835
2836 return change ? 1 : 0;
2837 }
2838
2839 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2840 struct net_device *netdev, u8 use_4addr,
2841 enum nl80211_iftype iftype)
2842 {
2843 if (!use_4addr) {
2844 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2845 return -EBUSY;
2846 return 0;
2847 }
2848
2849 switch (iftype) {
2850 case NL80211_IFTYPE_AP_VLAN:
2851 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2852 return 0;
2853 break;
2854 case NL80211_IFTYPE_STATION:
2855 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2856 return 0;
2857 break;
2858 default:
2859 break;
2860 }
2861
2862 return -EOPNOTSUPP;
2863 }
2864
2865 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2866 {
2867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2868 struct vif_params params;
2869 int err;
2870 enum nl80211_iftype otype, ntype;
2871 struct net_device *dev = info->user_ptr[1];
2872 bool change = false;
2873
2874 memset(&params, 0, sizeof(params));
2875
2876 otype = ntype = dev->ieee80211_ptr->iftype;
2877
2878 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2879 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2880 if (otype != ntype)
2881 change = true;
2882 if (ntype > NL80211_IFTYPE_MAX)
2883 return -EINVAL;
2884 }
2885
2886 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2887 struct wireless_dev *wdev = dev->ieee80211_ptr;
2888
2889 if (ntype != NL80211_IFTYPE_MESH_POINT)
2890 return -EINVAL;
2891 if (netif_running(dev))
2892 return -EBUSY;
2893
2894 wdev_lock(wdev);
2895 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2896 IEEE80211_MAX_MESH_ID_LEN);
2897 wdev->mesh_id_up_len =
2898 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2899 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2900 wdev->mesh_id_up_len);
2901 wdev_unlock(wdev);
2902 }
2903
2904 if (info->attrs[NL80211_ATTR_4ADDR]) {
2905 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2906 change = true;
2907 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2908 if (err)
2909 return err;
2910 } else {
2911 params.use_4addr = -1;
2912 }
2913
2914 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2915 if (err < 0)
2916 return err;
2917 if (err > 0)
2918 change = true;
2919
2920 if (change)
2921 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2922 else
2923 err = 0;
2924
2925 if (!err && params.use_4addr != -1)
2926 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2927
2928 return err;
2929 }
2930
2931 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2932 {
2933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2934 struct vif_params params;
2935 struct wireless_dev *wdev;
2936 struct sk_buff *msg;
2937 int err;
2938 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2939
2940 /* to avoid failing a new interface creation due to pending removal */
2941 cfg80211_destroy_ifaces(rdev);
2942
2943 memset(&params, 0, sizeof(params));
2944
2945 if (!info->attrs[NL80211_ATTR_IFNAME])
2946 return -EINVAL;
2947
2948 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2949 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2950 if (type > NL80211_IFTYPE_MAX)
2951 return -EINVAL;
2952 }
2953
2954 if (!rdev->ops->add_virtual_intf ||
2955 !(rdev->wiphy.interface_modes & (1 << type)))
2956 return -EOPNOTSUPP;
2957
2958 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2959 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2960 info->attrs[NL80211_ATTR_MAC]) {
2961 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2962 ETH_ALEN);
2963 if (!is_valid_ether_addr(params.macaddr))
2964 return -EADDRNOTAVAIL;
2965 }
2966
2967 if (info->attrs[NL80211_ATTR_4ADDR]) {
2968 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2969 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2970 if (err)
2971 return err;
2972 }
2973
2974 err = nl80211_parse_mon_options(rdev, type, info, &params);
2975 if (err < 0)
2976 return err;
2977
2978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2979 if (!msg)
2980 return -ENOMEM;
2981
2982 wdev = rdev_add_virtual_intf(rdev,
2983 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2984 NET_NAME_USER, type, &params);
2985 if (WARN_ON(!wdev)) {
2986 nlmsg_free(msg);
2987 return -EPROTO;
2988 } else if (IS_ERR(wdev)) {
2989 nlmsg_free(msg);
2990 return PTR_ERR(wdev);
2991 }
2992
2993 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2994 wdev->owner_nlportid = info->snd_portid;
2995
2996 switch (type) {
2997 case NL80211_IFTYPE_MESH_POINT:
2998 if (!info->attrs[NL80211_ATTR_MESH_ID])
2999 break;
3000 wdev_lock(wdev);
3001 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3002 IEEE80211_MAX_MESH_ID_LEN);
3003 wdev->mesh_id_up_len =
3004 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3005 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3006 wdev->mesh_id_up_len);
3007 wdev_unlock(wdev);
3008 break;
3009 case NL80211_IFTYPE_NAN:
3010 case NL80211_IFTYPE_P2P_DEVICE:
3011 /*
3012 * P2P Device and NAN do not have a netdev, so don't go
3013 * through the netdev notifier and must be added here
3014 */
3015 mutex_init(&wdev->mtx);
3016 INIT_LIST_HEAD(&wdev->event_list);
3017 spin_lock_init(&wdev->event_lock);
3018 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3019 spin_lock_init(&wdev->mgmt_registrations_lock);
3020
3021 wdev->identifier = ++rdev->wdev_id;
3022 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3023 rdev->devlist_generation++;
3024 break;
3025 default:
3026 break;
3027 }
3028
3029 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3030 rdev, wdev, false) < 0) {
3031 nlmsg_free(msg);
3032 return -ENOBUFS;
3033 }
3034
3035 /*
3036 * For wdevs which have no associated netdev object (e.g. of type
3037 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3038 * For all other types, the event will be generated from the
3039 * netdev notifier
3040 */
3041 if (!wdev->netdev)
3042 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3043
3044 return genlmsg_reply(msg, info);
3045 }
3046
3047 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3048 {
3049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3050 struct wireless_dev *wdev = info->user_ptr[1];
3051
3052 if (!rdev->ops->del_virtual_intf)
3053 return -EOPNOTSUPP;
3054
3055 /*
3056 * If we remove a wireless device without a netdev then clear
3057 * user_ptr[1] so that nl80211_post_doit won't dereference it
3058 * to check if it needs to do dev_put(). Otherwise it crashes
3059 * since the wdev has been freed, unlike with a netdev where
3060 * we need the dev_put() for the netdev to really be freed.
3061 */
3062 if (!wdev->netdev)
3063 info->user_ptr[1] = NULL;
3064
3065 return rdev_del_virtual_intf(rdev, wdev);
3066 }
3067
3068 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3069 {
3070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3071 struct net_device *dev = info->user_ptr[1];
3072 u16 noack_map;
3073
3074 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3075 return -EINVAL;
3076
3077 if (!rdev->ops->set_noack_map)
3078 return -EOPNOTSUPP;
3079
3080 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3081
3082 return rdev_set_noack_map(rdev, dev, noack_map);
3083 }
3084
3085 struct get_key_cookie {
3086 struct sk_buff *msg;
3087 int error;
3088 int idx;
3089 };
3090
3091 static void get_key_callback(void *c, struct key_params *params)
3092 {
3093 struct nlattr *key;
3094 struct get_key_cookie *cookie = c;
3095
3096 if ((params->key &&
3097 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3098 params->key_len, params->key)) ||
3099 (params->seq &&
3100 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3101 params->seq_len, params->seq)) ||
3102 (params->cipher &&
3103 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3104 params->cipher)))
3105 goto nla_put_failure;
3106
3107 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3108 if (!key)
3109 goto nla_put_failure;
3110
3111 if ((params->key &&
3112 nla_put(cookie->msg, NL80211_KEY_DATA,
3113 params->key_len, params->key)) ||
3114 (params->seq &&
3115 nla_put(cookie->msg, NL80211_KEY_SEQ,
3116 params->seq_len, params->seq)) ||
3117 (params->cipher &&
3118 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3119 params->cipher)))
3120 goto nla_put_failure;
3121
3122 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3123 goto nla_put_failure;
3124
3125 nla_nest_end(cookie->msg, key);
3126
3127 return;
3128 nla_put_failure:
3129 cookie->error = 1;
3130 }
3131
3132 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3133 {
3134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3135 int err;
3136 struct net_device *dev = info->user_ptr[1];
3137 u8 key_idx = 0;
3138 const u8 *mac_addr = NULL;
3139 bool pairwise;
3140 struct get_key_cookie cookie = {
3141 .error = 0,
3142 };
3143 void *hdr;
3144 struct sk_buff *msg;
3145
3146 if (info->attrs[NL80211_ATTR_KEY_IDX])
3147 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3148
3149 if (key_idx > 5)
3150 return -EINVAL;
3151
3152 if (info->attrs[NL80211_ATTR_MAC])
3153 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3154
3155 pairwise = !!mac_addr;
3156 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3157 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3158
3159 if (kt >= NUM_NL80211_KEYTYPES)
3160 return -EINVAL;
3161 if (kt != NL80211_KEYTYPE_GROUP &&
3162 kt != NL80211_KEYTYPE_PAIRWISE)
3163 return -EINVAL;
3164 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3165 }
3166
3167 if (!rdev->ops->get_key)
3168 return -EOPNOTSUPP;
3169
3170 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3171 return -ENOENT;
3172
3173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3174 if (!msg)
3175 return -ENOMEM;
3176
3177 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3178 NL80211_CMD_NEW_KEY);
3179 if (!hdr)
3180 goto nla_put_failure;
3181
3182 cookie.msg = msg;
3183 cookie.idx = key_idx;
3184
3185 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3186 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3187 goto nla_put_failure;
3188 if (mac_addr &&
3189 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3190 goto nla_put_failure;
3191
3192 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3193 get_key_callback);
3194
3195 if (err)
3196 goto free_msg;
3197
3198 if (cookie.error)
3199 goto nla_put_failure;
3200
3201 genlmsg_end(msg, hdr);
3202 return genlmsg_reply(msg, info);
3203
3204 nla_put_failure:
3205 err = -ENOBUFS;
3206 free_msg:
3207 nlmsg_free(msg);
3208 return err;
3209 }
3210
3211 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3212 {
3213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3214 struct key_parse key;
3215 int err;
3216 struct net_device *dev = info->user_ptr[1];
3217
3218 err = nl80211_parse_key(info, &key);
3219 if (err)
3220 return err;
3221
3222 if (key.idx < 0)
3223 return -EINVAL;
3224
3225 /* only support setting default key */
3226 if (!key.def && !key.defmgmt)
3227 return -EINVAL;
3228
3229 wdev_lock(dev->ieee80211_ptr);
3230
3231 if (key.def) {
3232 if (!rdev->ops->set_default_key) {
3233 err = -EOPNOTSUPP;
3234 goto out;
3235 }
3236
3237 err = nl80211_key_allowed(dev->ieee80211_ptr);
3238 if (err)
3239 goto out;
3240
3241 err = rdev_set_default_key(rdev, dev, key.idx,
3242 key.def_uni, key.def_multi);
3243
3244 if (err)
3245 goto out;
3246
3247 #ifdef CONFIG_CFG80211_WEXT
3248 dev->ieee80211_ptr->wext.default_key = key.idx;
3249 #endif
3250 } else {
3251 if (key.def_uni || !key.def_multi) {
3252 err = -EINVAL;
3253 goto out;
3254 }
3255
3256 if (!rdev->ops->set_default_mgmt_key) {
3257 err = -EOPNOTSUPP;
3258 goto out;
3259 }
3260
3261 err = nl80211_key_allowed(dev->ieee80211_ptr);
3262 if (err)
3263 goto out;
3264
3265 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3266 if (err)
3267 goto out;
3268
3269 #ifdef CONFIG_CFG80211_WEXT
3270 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3271 #endif
3272 }
3273
3274 out:
3275 wdev_unlock(dev->ieee80211_ptr);
3276
3277 return err;
3278 }
3279
3280 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3281 {
3282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3283 int err;
3284 struct net_device *dev = info->user_ptr[1];
3285 struct key_parse key;
3286 const u8 *mac_addr = NULL;
3287
3288 err = nl80211_parse_key(info, &key);
3289 if (err)
3290 return err;
3291
3292 if (!key.p.key)
3293 return -EINVAL;
3294
3295 if (info->attrs[NL80211_ATTR_MAC])
3296 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3297
3298 if (key.type == -1) {
3299 if (mac_addr)
3300 key.type = NL80211_KEYTYPE_PAIRWISE;
3301 else
3302 key.type = NL80211_KEYTYPE_GROUP;
3303 }
3304
3305 /* for now */
3306 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3307 key.type != NL80211_KEYTYPE_GROUP)
3308 return -EINVAL;
3309
3310 if (!rdev->ops->add_key)
3311 return -EOPNOTSUPP;
3312
3313 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3314 key.type == NL80211_KEYTYPE_PAIRWISE,
3315 mac_addr))
3316 return -EINVAL;
3317
3318 wdev_lock(dev->ieee80211_ptr);
3319 err = nl80211_key_allowed(dev->ieee80211_ptr);
3320 if (!err)
3321 err = rdev_add_key(rdev, dev, key.idx,
3322 key.type == NL80211_KEYTYPE_PAIRWISE,
3323 mac_addr, &key.p);
3324 wdev_unlock(dev->ieee80211_ptr);
3325
3326 return err;
3327 }
3328
3329 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3330 {
3331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3332 int err;
3333 struct net_device *dev = info->user_ptr[1];
3334 u8 *mac_addr = NULL;
3335 struct key_parse key;
3336
3337 err = nl80211_parse_key(info, &key);
3338 if (err)
3339 return err;
3340
3341 if (info->attrs[NL80211_ATTR_MAC])
3342 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3343
3344 if (key.type == -1) {
3345 if (mac_addr)
3346 key.type = NL80211_KEYTYPE_PAIRWISE;
3347 else
3348 key.type = NL80211_KEYTYPE_GROUP;
3349 }
3350
3351 /* for now */
3352 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3353 key.type != NL80211_KEYTYPE_GROUP)
3354 return -EINVAL;
3355
3356 if (!rdev->ops->del_key)
3357 return -EOPNOTSUPP;
3358
3359 wdev_lock(dev->ieee80211_ptr);
3360 err = nl80211_key_allowed(dev->ieee80211_ptr);
3361
3362 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3363 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3364 err = -ENOENT;
3365
3366 if (!err)
3367 err = rdev_del_key(rdev, dev, key.idx,
3368 key.type == NL80211_KEYTYPE_PAIRWISE,
3369 mac_addr);
3370
3371 #ifdef CONFIG_CFG80211_WEXT
3372 if (!err) {
3373 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3374 dev->ieee80211_ptr->wext.default_key = -1;
3375 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3376 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3377 }
3378 #endif
3379 wdev_unlock(dev->ieee80211_ptr);
3380
3381 return err;
3382 }
3383
3384 /* This function returns an error or the number of nested attributes */
3385 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3386 {
3387 struct nlattr *attr;
3388 int n_entries = 0, tmp;
3389
3390 nla_for_each_nested(attr, nl_attr, tmp) {
3391 if (nla_len(attr) != ETH_ALEN)
3392 return -EINVAL;
3393
3394 n_entries++;
3395 }
3396
3397 return n_entries;
3398 }
3399
3400 /*
3401 * This function parses ACL information and allocates memory for ACL data.
3402 * On successful return, the calling function is responsible to free the
3403 * ACL buffer returned by this function.
3404 */
3405 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3406 struct genl_info *info)
3407 {
3408 enum nl80211_acl_policy acl_policy;
3409 struct nlattr *attr;
3410 struct cfg80211_acl_data *acl;
3411 int i = 0, n_entries, tmp;
3412
3413 if (!wiphy->max_acl_mac_addrs)
3414 return ERR_PTR(-EOPNOTSUPP);
3415
3416 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3417 return ERR_PTR(-EINVAL);
3418
3419 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3420 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3421 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3422 return ERR_PTR(-EINVAL);
3423
3424 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3425 return ERR_PTR(-EINVAL);
3426
3427 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3428 if (n_entries < 0)
3429 return ERR_PTR(n_entries);
3430
3431 if (n_entries > wiphy->max_acl_mac_addrs)
3432 return ERR_PTR(-ENOTSUPP);
3433
3434 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3435 GFP_KERNEL);
3436 if (!acl)
3437 return ERR_PTR(-ENOMEM);
3438
3439 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3440 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3441 i++;
3442 }
3443
3444 acl->n_acl_entries = n_entries;
3445 acl->acl_policy = acl_policy;
3446
3447 return acl;
3448 }
3449
3450 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3451 {
3452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3453 struct net_device *dev = info->user_ptr[1];
3454 struct cfg80211_acl_data *acl;
3455 int err;
3456
3457 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3459 return -EOPNOTSUPP;
3460
3461 if (!dev->ieee80211_ptr->beacon_interval)
3462 return -EINVAL;
3463
3464 acl = parse_acl_data(&rdev->wiphy, info);
3465 if (IS_ERR(acl))
3466 return PTR_ERR(acl);
3467
3468 err = rdev_set_mac_acl(rdev, dev, acl);
3469
3470 kfree(acl);
3471
3472 return err;
3473 }
3474
3475 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3476 u8 *rates, u8 rates_len)
3477 {
3478 u8 i;
3479 u32 mask = 0;
3480
3481 for (i = 0; i < rates_len; i++) {
3482 int rate = (rates[i] & 0x7f) * 5;
3483 int ridx;
3484
3485 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3486 struct ieee80211_rate *srate =
3487 &sband->bitrates[ridx];
3488 if (rate == srate->bitrate) {
3489 mask |= 1 << ridx;
3490 break;
3491 }
3492 }
3493 if (ridx == sband->n_bitrates)
3494 return 0; /* rate not found */
3495 }
3496
3497 return mask;
3498 }
3499
3500 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3501 u8 *rates, u8 rates_len,
3502 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3503 {
3504 u8 i;
3505
3506 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3507
3508 for (i = 0; i < rates_len; i++) {
3509 int ridx, rbit;
3510
3511 ridx = rates[i] / 8;
3512 rbit = BIT(rates[i] % 8);
3513
3514 /* check validity */
3515 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3516 return false;
3517
3518 /* check availability */
3519 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3520 mcs[ridx] |= rbit;
3521 else
3522 return false;
3523 }
3524
3525 return true;
3526 }
3527
3528 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3529 {
3530 u16 mcs_mask = 0;
3531
3532 switch (vht_mcs_map) {
3533 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3534 break;
3535 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3536 mcs_mask = 0x00FF;
3537 break;
3538 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3539 mcs_mask = 0x01FF;
3540 break;
3541 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3542 mcs_mask = 0x03FF;
3543 break;
3544 default:
3545 break;
3546 }
3547
3548 return mcs_mask;
3549 }
3550
3551 static void vht_build_mcs_mask(u16 vht_mcs_map,
3552 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3553 {
3554 u8 nss;
3555
3556 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3557 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3558 vht_mcs_map >>= 2;
3559 }
3560 }
3561
3562 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3563 struct nl80211_txrate_vht *txrate,
3564 u16 mcs[NL80211_VHT_NSS_MAX])
3565 {
3566 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3567 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3568 u8 i;
3569
3570 if (!sband->vht_cap.vht_supported)
3571 return false;
3572
3573 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3574
3575 /* Build vht_mcs_mask from VHT capabilities */
3576 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3577
3578 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3579 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3580 mcs[i] = txrate->mcs[i];
3581 else
3582 return false;
3583 }
3584
3585 return true;
3586 }
3587
3588 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3589 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3590 .len = NL80211_MAX_SUPP_RATES },
3591 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3592 .len = NL80211_MAX_SUPP_HT_RATES },
3593 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3594 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3595 };
3596
3597 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3598 struct cfg80211_bitrate_mask *mask)
3599 {
3600 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3602 int rem, i;
3603 struct nlattr *tx_rates;
3604 struct ieee80211_supported_band *sband;
3605 u16 vht_tx_mcs_map;
3606
3607 memset(mask, 0, sizeof(*mask));
3608 /* Default to all rates enabled */
3609 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3610 sband = rdev->wiphy.bands[i];
3611
3612 if (!sband)
3613 continue;
3614
3615 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3616 memcpy(mask->control[i].ht_mcs,
3617 sband->ht_cap.mcs.rx_mask,
3618 sizeof(mask->control[i].ht_mcs));
3619
3620 if (!sband->vht_cap.vht_supported)
3621 continue;
3622
3623 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3624 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3625 }
3626
3627 /* if no rates are given set it back to the defaults */
3628 if (!info->attrs[NL80211_ATTR_TX_RATES])
3629 goto out;
3630
3631 /* The nested attribute uses enum nl80211_band as the index. This maps
3632 * directly to the enum nl80211_band values used in cfg80211.
3633 */
3634 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3635 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3636 enum nl80211_band band = nla_type(tx_rates);
3637 int err;
3638
3639 if (band < 0 || band >= NUM_NL80211_BANDS)
3640 return -EINVAL;
3641 sband = rdev->wiphy.bands[band];
3642 if (sband == NULL)
3643 return -EINVAL;
3644 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3645 nl80211_txattr_policy, info->extack);
3646 if (err)
3647 return err;
3648 if (tb[NL80211_TXRATE_LEGACY]) {
3649 mask->control[band].legacy = rateset_to_mask(
3650 sband,
3651 nla_data(tb[NL80211_TXRATE_LEGACY]),
3652 nla_len(tb[NL80211_TXRATE_LEGACY]));
3653 if ((mask->control[band].legacy == 0) &&
3654 nla_len(tb[NL80211_TXRATE_LEGACY]))
3655 return -EINVAL;
3656 }
3657 if (tb[NL80211_TXRATE_HT]) {
3658 if (!ht_rateset_to_mask(
3659 sband,
3660 nla_data(tb[NL80211_TXRATE_HT]),
3661 nla_len(tb[NL80211_TXRATE_HT]),
3662 mask->control[band].ht_mcs))
3663 return -EINVAL;
3664 }
3665 if (tb[NL80211_TXRATE_VHT]) {
3666 if (!vht_set_mcs_mask(
3667 sband,
3668 nla_data(tb[NL80211_TXRATE_VHT]),
3669 mask->control[band].vht_mcs))
3670 return -EINVAL;
3671 }
3672 if (tb[NL80211_TXRATE_GI]) {
3673 mask->control[band].gi =
3674 nla_get_u8(tb[NL80211_TXRATE_GI]);
3675 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3676 return -EINVAL;
3677 }
3678
3679 if (mask->control[band].legacy == 0) {
3680 /* don't allow empty legacy rates if HT or VHT
3681 * are not even supported.
3682 */
3683 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3684 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3685 return -EINVAL;
3686
3687 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3688 if (mask->control[band].ht_mcs[i])
3689 goto out;
3690
3691 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3692 if (mask->control[band].vht_mcs[i])
3693 goto out;
3694
3695 /* legacy and mcs rates may not be both empty */
3696 return -EINVAL;
3697 }
3698 }
3699
3700 out:
3701 return 0;
3702 }
3703
3704 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3705 enum nl80211_band band,
3706 struct cfg80211_bitrate_mask *beacon_rate)
3707 {
3708 u32 count_ht, count_vht, i;
3709 u32 rate = beacon_rate->control[band].legacy;
3710
3711 /* Allow only one rate */
3712 if (hweight32(rate) > 1)
3713 return -EINVAL;
3714
3715 count_ht = 0;
3716 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3717 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3718 return -EINVAL;
3719 } else if (beacon_rate->control[band].ht_mcs[i]) {
3720 count_ht++;
3721 if (count_ht > 1)
3722 return -EINVAL;
3723 }
3724 if (count_ht && rate)
3725 return -EINVAL;
3726 }
3727
3728 count_vht = 0;
3729 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3730 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3731 return -EINVAL;
3732 } else if (beacon_rate->control[band].vht_mcs[i]) {
3733 count_vht++;
3734 if (count_vht > 1)
3735 return -EINVAL;
3736 }
3737 if (count_vht && rate)
3738 return -EINVAL;
3739 }
3740
3741 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3742 return -EINVAL;
3743
3744 if (rate &&
3745 !wiphy_ext_feature_isset(&rdev->wiphy,
3746 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3747 return -EINVAL;
3748 if (count_ht &&
3749 !wiphy_ext_feature_isset(&rdev->wiphy,
3750 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3751 return -EINVAL;
3752 if (count_vht &&
3753 !wiphy_ext_feature_isset(&rdev->wiphy,
3754 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3755 return -EINVAL;
3756
3757 return 0;
3758 }
3759
3760 static int nl80211_parse_beacon(struct nlattr *attrs[],
3761 struct cfg80211_beacon_data *bcn)
3762 {
3763 bool haveinfo = false;
3764
3765 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3766 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3767 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3768 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3769 return -EINVAL;
3770
3771 memset(bcn, 0, sizeof(*bcn));
3772
3773 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3774 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3775 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3776 if (!bcn->head_len)
3777 return -EINVAL;
3778 haveinfo = true;
3779 }
3780
3781 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3782 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3783 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3784 haveinfo = true;
3785 }
3786
3787 if (!haveinfo)
3788 return -EINVAL;
3789
3790 if (attrs[NL80211_ATTR_IE]) {
3791 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3792 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3793 }
3794
3795 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3796 bcn->proberesp_ies =
3797 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3798 bcn->proberesp_ies_len =
3799 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3800 }
3801
3802 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3803 bcn->assocresp_ies =
3804 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3805 bcn->assocresp_ies_len =
3806 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3807 }
3808
3809 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3810 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3811 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3812 }
3813
3814 return 0;
3815 }
3816
3817 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3818 const u8 *rates)
3819 {
3820 int i;
3821
3822 if (!rates)
3823 return;
3824
3825 for (i = 0; i < rates[1]; i++) {
3826 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3827 params->ht_required = true;
3828 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3829 params->vht_required = true;
3830 }
3831 }
3832
3833 /*
3834 * Since the nl80211 API didn't include, from the beginning, attributes about
3835 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3836 * benefit of drivers that rebuild IEs in the firmware.
3837 */
3838 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3839 {
3840 const struct cfg80211_beacon_data *bcn = &params->beacon;
3841 size_t ies_len = bcn->tail_len;
3842 const u8 *ies = bcn->tail;
3843 const u8 *rates;
3844 const u8 *cap;
3845
3846 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3847 nl80211_check_ap_rate_selectors(params, rates);
3848
3849 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3850 nl80211_check_ap_rate_selectors(params, rates);
3851
3852 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3853 if (cap && cap[1] >= sizeof(*params->ht_cap))
3854 params->ht_cap = (void *)(cap + 2);
3855 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3856 if (cap && cap[1] >= sizeof(*params->vht_cap))
3857 params->vht_cap = (void *)(cap + 2);
3858 }
3859
3860 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3861 struct cfg80211_ap_settings *params)
3862 {
3863 struct wireless_dev *wdev;
3864 bool ret = false;
3865
3866 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3867 if (wdev->iftype != NL80211_IFTYPE_AP &&
3868 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3869 continue;
3870
3871 if (!wdev->preset_chandef.chan)
3872 continue;
3873
3874 params->chandef = wdev->preset_chandef;
3875 ret = true;
3876 break;
3877 }
3878
3879 return ret;
3880 }
3881
3882 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3883 enum nl80211_auth_type auth_type,
3884 enum nl80211_commands cmd)
3885 {
3886 if (auth_type > NL80211_AUTHTYPE_MAX)
3887 return false;
3888
3889 switch (cmd) {
3890 case NL80211_CMD_AUTHENTICATE:
3891 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3892 auth_type == NL80211_AUTHTYPE_SAE)
3893 return false;
3894 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3895 NL80211_EXT_FEATURE_FILS_STA) &&
3896 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3897 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3898 auth_type == NL80211_AUTHTYPE_FILS_PK))
3899 return false;
3900 return true;
3901 case NL80211_CMD_CONNECT:
3902 /* SAE not supported yet */
3903 if (auth_type == NL80211_AUTHTYPE_SAE)
3904 return false;
3905 /* FILS with SK PFS or PK not supported yet */
3906 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3907 auth_type == NL80211_AUTHTYPE_FILS_PK)
3908 return false;
3909 if (!wiphy_ext_feature_isset(
3910 &rdev->wiphy,
3911 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3912 auth_type == NL80211_AUTHTYPE_FILS_SK)
3913 return false;
3914 return true;
3915 case NL80211_CMD_START_AP:
3916 /* SAE not supported yet */
3917 if (auth_type == NL80211_AUTHTYPE_SAE)
3918 return false;
3919 /* FILS not supported yet */
3920 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3921 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3922 auth_type == NL80211_AUTHTYPE_FILS_PK)
3923 return false;
3924 return true;
3925 default:
3926 return false;
3927 }
3928 }
3929
3930 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3931 {
3932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3933 struct net_device *dev = info->user_ptr[1];
3934 struct wireless_dev *wdev = dev->ieee80211_ptr;
3935 struct cfg80211_ap_settings params;
3936 int err;
3937
3938 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3939 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3940 return -EOPNOTSUPP;
3941
3942 if (!rdev->ops->start_ap)
3943 return -EOPNOTSUPP;
3944
3945 if (wdev->beacon_interval)
3946 return -EALREADY;
3947
3948 memset(&params, 0, sizeof(params));
3949
3950 /* these are required for START_AP */
3951 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3952 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3953 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3954 return -EINVAL;
3955
3956 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3957 if (err)
3958 return err;
3959
3960 params.beacon_interval =
3961 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3962 params.dtim_period =
3963 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3964
3965 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3966 params.beacon_interval);
3967 if (err)
3968 return err;
3969
3970 /*
3971 * In theory, some of these attributes should be required here
3972 * but since they were not used when the command was originally
3973 * added, keep them optional for old user space programs to let
3974 * them continue to work with drivers that do not need the
3975 * additional information -- drivers must check!
3976 */
3977 if (info->attrs[NL80211_ATTR_SSID]) {
3978 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3979 params.ssid_len =
3980 nla_len(info->attrs[NL80211_ATTR_SSID]);
3981 if (params.ssid_len == 0 ||
3982 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3983 return -EINVAL;
3984 }
3985
3986 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3987 params.hidden_ssid = nla_get_u32(
3988 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3989 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3990 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3991 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3992 return -EINVAL;
3993 }
3994
3995 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3996
3997 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3998 params.auth_type = nla_get_u32(
3999 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4000 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4001 NL80211_CMD_START_AP))
4002 return -EINVAL;
4003 } else
4004 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4005
4006 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4007 NL80211_MAX_NR_CIPHER_SUITES);
4008 if (err)
4009 return err;
4010
4011 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4012 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4013 return -EOPNOTSUPP;
4014 params.inactivity_timeout = nla_get_u16(
4015 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4016 }
4017
4018 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4019 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4020 return -EINVAL;
4021 params.p2p_ctwindow =
4022 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4023 if (params.p2p_ctwindow > 127)
4024 return -EINVAL;
4025 if (params.p2p_ctwindow != 0 &&
4026 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4027 return -EINVAL;
4028 }
4029
4030 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4031 u8 tmp;
4032
4033 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4034 return -EINVAL;
4035 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4036 if (tmp > 1)
4037 return -EINVAL;
4038 params.p2p_opp_ps = tmp;
4039 if (params.p2p_opp_ps != 0 &&
4040 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4041 return -EINVAL;
4042 }
4043
4044 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4045 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4046 if (err)
4047 return err;
4048 } else if (wdev->preset_chandef.chan) {
4049 params.chandef = wdev->preset_chandef;
4050 } else if (!nl80211_get_ap_channel(rdev, &params))
4051 return -EINVAL;
4052
4053 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4054 wdev->iftype))
4055 return -EINVAL;
4056
4057 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4058 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4059 if (err)
4060 return err;
4061
4062 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4063 &params.beacon_rate);
4064 if (err)
4065 return err;
4066 }
4067
4068 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4069 params.smps_mode =
4070 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4071 switch (params.smps_mode) {
4072 case NL80211_SMPS_OFF:
4073 break;
4074 case NL80211_SMPS_STATIC:
4075 if (!(rdev->wiphy.features &
4076 NL80211_FEATURE_STATIC_SMPS))
4077 return -EINVAL;
4078 break;
4079 case NL80211_SMPS_DYNAMIC:
4080 if (!(rdev->wiphy.features &
4081 NL80211_FEATURE_DYNAMIC_SMPS))
4082 return -EINVAL;
4083 break;
4084 default:
4085 return -EINVAL;
4086 }
4087 } else {
4088 params.smps_mode = NL80211_SMPS_OFF;
4089 }
4090
4091 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4092 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4093 return -EOPNOTSUPP;
4094
4095 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4096 params.acl = parse_acl_data(&rdev->wiphy, info);
4097 if (IS_ERR(params.acl))
4098 return PTR_ERR(params.acl);
4099 }
4100
4101 nl80211_calculate_ap_params(&params);
4102
4103 wdev_lock(wdev);
4104 err = rdev_start_ap(rdev, dev, &params);
4105 if (!err) {
4106 wdev->preset_chandef = params.chandef;
4107 wdev->beacon_interval = params.beacon_interval;
4108 wdev->chandef = params.chandef;
4109 wdev->ssid_len = params.ssid_len;
4110 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4111 }
4112 wdev_unlock(wdev);
4113
4114 kfree(params.acl);
4115
4116 return err;
4117 }
4118
4119 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4120 {
4121 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4122 struct net_device *dev = info->user_ptr[1];
4123 struct wireless_dev *wdev = dev->ieee80211_ptr;
4124 struct cfg80211_beacon_data params;
4125 int err;
4126
4127 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4128 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4129 return -EOPNOTSUPP;
4130
4131 if (!rdev->ops->change_beacon)
4132 return -EOPNOTSUPP;
4133
4134 if (!wdev->beacon_interval)
4135 return -EINVAL;
4136
4137 err = nl80211_parse_beacon(info->attrs, &params);
4138 if (err)
4139 return err;
4140
4141 wdev_lock(wdev);
4142 err = rdev_change_beacon(rdev, dev, &params);
4143 wdev_unlock(wdev);
4144
4145 return err;
4146 }
4147
4148 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4149 {
4150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4151 struct net_device *dev = info->user_ptr[1];
4152
4153 return cfg80211_stop_ap(rdev, dev, false);
4154 }
4155
4156 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4157 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4158 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4159 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4160 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4161 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4162 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4163 };
4164
4165 static int parse_station_flags(struct genl_info *info,
4166 enum nl80211_iftype iftype,
4167 struct station_parameters *params)
4168 {
4169 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4170 struct nlattr *nla;
4171 int flag;
4172
4173 /*
4174 * Try parsing the new attribute first so userspace
4175 * can specify both for older kernels.
4176 */
4177 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4178 if (nla) {
4179 struct nl80211_sta_flag_update *sta_flags;
4180
4181 sta_flags = nla_data(nla);
4182 params->sta_flags_mask = sta_flags->mask;
4183 params->sta_flags_set = sta_flags->set;
4184 params->sta_flags_set &= params->sta_flags_mask;
4185 if ((params->sta_flags_mask |
4186 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4187 return -EINVAL;
4188 return 0;
4189 }
4190
4191 /* if present, parse the old attribute */
4192
4193 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4194 if (!nla)
4195 return 0;
4196
4197 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4198 sta_flags_policy, info->extack))
4199 return -EINVAL;
4200
4201 /*
4202 * Only allow certain flags for interface types so that
4203 * other attributes are silently ignored. Remember that
4204 * this is backward compatibility code with old userspace
4205 * and shouldn't be hit in other cases anyway.
4206 */
4207 switch (iftype) {
4208 case NL80211_IFTYPE_AP:
4209 case NL80211_IFTYPE_AP_VLAN:
4210 case NL80211_IFTYPE_P2P_GO:
4211 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4212 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4213 BIT(NL80211_STA_FLAG_WME) |
4214 BIT(NL80211_STA_FLAG_MFP);
4215 break;
4216 case NL80211_IFTYPE_P2P_CLIENT:
4217 case NL80211_IFTYPE_STATION:
4218 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4219 BIT(NL80211_STA_FLAG_TDLS_PEER);
4220 break;
4221 case NL80211_IFTYPE_MESH_POINT:
4222 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4223 BIT(NL80211_STA_FLAG_MFP) |
4224 BIT(NL80211_STA_FLAG_AUTHORIZED);
4225 default:
4226 return -EINVAL;
4227 }
4228
4229 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4230 if (flags[flag]) {
4231 params->sta_flags_set |= (1<<flag);
4232
4233 /* no longer support new API additions in old API */
4234 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4235 return -EINVAL;
4236 }
4237 }
4238
4239 return 0;
4240 }
4241
4242 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4243 int attr)
4244 {
4245 struct nlattr *rate;
4246 u32 bitrate;
4247 u16 bitrate_compat;
4248 enum nl80211_rate_info rate_flg;
4249
4250 rate = nla_nest_start(msg, attr);
4251 if (!rate)
4252 return false;
4253
4254 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4255 bitrate = cfg80211_calculate_bitrate(info);
4256 /* report 16-bit bitrate only if we can */
4257 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4258 if (bitrate > 0 &&
4259 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4260 return false;
4261 if (bitrate_compat > 0 &&
4262 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4263 return false;
4264
4265 switch (info->bw) {
4266 case RATE_INFO_BW_5:
4267 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4268 break;
4269 case RATE_INFO_BW_10:
4270 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4271 break;
4272 default:
4273 WARN_ON(1);
4274 /* fall through */
4275 case RATE_INFO_BW_20:
4276 rate_flg = 0;
4277 break;
4278 case RATE_INFO_BW_40:
4279 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4280 break;
4281 case RATE_INFO_BW_80:
4282 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4283 break;
4284 case RATE_INFO_BW_160:
4285 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4286 break;
4287 }
4288
4289 if (rate_flg && nla_put_flag(msg, rate_flg))
4290 return false;
4291
4292 if (info->flags & RATE_INFO_FLAGS_MCS) {
4293 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4294 return false;
4295 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4296 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4297 return false;
4298 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4299 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4300 return false;
4301 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4302 return false;
4303 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4304 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4305 return false;
4306 }
4307
4308 nla_nest_end(msg, rate);
4309 return true;
4310 }
4311
4312 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4313 int id)
4314 {
4315 void *attr;
4316 int i = 0;
4317
4318 if (!mask)
4319 return true;
4320
4321 attr = nla_nest_start(msg, id);
4322 if (!attr)
4323 return false;
4324
4325 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4326 if (!(mask & BIT(i)))
4327 continue;
4328
4329 if (nla_put_u8(msg, i, signal[i]))
4330 return false;
4331 }
4332
4333 nla_nest_end(msg, attr);
4334
4335 return true;
4336 }
4337
4338 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4339 u32 seq, int flags,
4340 struct cfg80211_registered_device *rdev,
4341 struct net_device *dev,
4342 const u8 *mac_addr, struct station_info *sinfo)
4343 {
4344 void *hdr;
4345 struct nlattr *sinfoattr, *bss_param;
4346
4347 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4348 if (!hdr)
4349 return -1;
4350
4351 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4352 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4353 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4354 goto nla_put_failure;
4355
4356 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4357 if (!sinfoattr)
4358 goto nla_put_failure;
4359
4360 #define PUT_SINFO(attr, memb, type) do { \
4361 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4362 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4363 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4364 sinfo->memb)) \
4365 goto nla_put_failure; \
4366 } while (0)
4367 #define PUT_SINFO_U64(attr, memb) do { \
4368 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4369 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4370 sinfo->memb, NL80211_STA_INFO_PAD)) \
4371 goto nla_put_failure; \
4372 } while (0)
4373
4374 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4375 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4376
4377 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4378 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4379 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4380 (u32)sinfo->rx_bytes))
4381 goto nla_put_failure;
4382
4383 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4384 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4385 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4386 (u32)sinfo->tx_bytes))
4387 goto nla_put_failure;
4388
4389 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4390 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4391 PUT_SINFO(LLID, llid, u16);
4392 PUT_SINFO(PLID, plid, u16);
4393 PUT_SINFO(PLINK_STATE, plink_state, u8);
4394 PUT_SINFO_U64(RX_DURATION, rx_duration);
4395
4396 switch (rdev->wiphy.signal_type) {
4397 case CFG80211_SIGNAL_TYPE_MBM:
4398 PUT_SINFO(SIGNAL, signal, u8);
4399 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4400 break;
4401 default:
4402 break;
4403 }
4404 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4405 if (!nl80211_put_signal(msg, sinfo->chains,
4406 sinfo->chain_signal,
4407 NL80211_STA_INFO_CHAIN_SIGNAL))
4408 goto nla_put_failure;
4409 }
4410 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4411 if (!nl80211_put_signal(msg, sinfo->chains,
4412 sinfo->chain_signal_avg,
4413 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4414 goto nla_put_failure;
4415 }
4416 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4417 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4418 NL80211_STA_INFO_TX_BITRATE))
4419 goto nla_put_failure;
4420 }
4421 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4422 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4423 NL80211_STA_INFO_RX_BITRATE))
4424 goto nla_put_failure;
4425 }
4426
4427 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4428 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4429 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4430 PUT_SINFO(TX_FAILED, tx_failed, u32);
4431 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4432 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4433 PUT_SINFO(LOCAL_PM, local_pm, u32);
4434 PUT_SINFO(PEER_PM, peer_pm, u32);
4435 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4436
4437 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4438 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4439 if (!bss_param)
4440 goto nla_put_failure;
4441
4442 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4443 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4444 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4445 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4446 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4447 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4448 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4449 sinfo->bss_param.dtim_period) ||
4450 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4451 sinfo->bss_param.beacon_interval))
4452 goto nla_put_failure;
4453
4454 nla_nest_end(msg, bss_param);
4455 }
4456 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4457 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4458 sizeof(struct nl80211_sta_flag_update),
4459 &sinfo->sta_flags))
4460 goto nla_put_failure;
4461
4462 PUT_SINFO_U64(T_OFFSET, t_offset);
4463 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4464 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4465 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4466
4467 #undef PUT_SINFO
4468 #undef PUT_SINFO_U64
4469
4470 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4471 struct nlattr *tidsattr;
4472 int tid;
4473
4474 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4475 if (!tidsattr)
4476 goto nla_put_failure;
4477
4478 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4479 struct cfg80211_tid_stats *tidstats;
4480 struct nlattr *tidattr;
4481
4482 tidstats = &sinfo->pertid[tid];
4483
4484 if (!tidstats->filled)
4485 continue;
4486
4487 tidattr = nla_nest_start(msg, tid + 1);
4488 if (!tidattr)
4489 goto nla_put_failure;
4490
4491 #define PUT_TIDVAL_U64(attr, memb) do { \
4492 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4493 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4494 tidstats->memb, NL80211_TID_STATS_PAD)) \
4495 goto nla_put_failure; \
4496 } while (0)
4497
4498 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4499 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4500 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4501 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4502
4503 #undef PUT_TIDVAL_U64
4504 nla_nest_end(msg, tidattr);
4505 }
4506
4507 nla_nest_end(msg, tidsattr);
4508 }
4509
4510 nla_nest_end(msg, sinfoattr);
4511
4512 if (sinfo->assoc_req_ies_len &&
4513 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4514 sinfo->assoc_req_ies))
4515 goto nla_put_failure;
4516
4517 genlmsg_end(msg, hdr);
4518 return 0;
4519
4520 nla_put_failure:
4521 genlmsg_cancel(msg, hdr);
4522 return -EMSGSIZE;
4523 }
4524
4525 static int nl80211_dump_station(struct sk_buff *skb,
4526 struct netlink_callback *cb)
4527 {
4528 struct station_info sinfo;
4529 struct cfg80211_registered_device *rdev;
4530 struct wireless_dev *wdev;
4531 u8 mac_addr[ETH_ALEN];
4532 int sta_idx = cb->args[2];
4533 int err;
4534
4535 rtnl_lock();
4536 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4537 if (err)
4538 goto out_err;
4539
4540 if (!wdev->netdev) {
4541 err = -EINVAL;
4542 goto out_err;
4543 }
4544
4545 if (!rdev->ops->dump_station) {
4546 err = -EOPNOTSUPP;
4547 goto out_err;
4548 }
4549
4550 while (1) {
4551 memset(&sinfo, 0, sizeof(sinfo));
4552 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4553 mac_addr, &sinfo);
4554 if (err == -ENOENT)
4555 break;
4556 if (err)
4557 goto out_err;
4558
4559 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4560 NETLINK_CB(cb->skb).portid,
4561 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4562 rdev, wdev->netdev, mac_addr,
4563 &sinfo) < 0)
4564 goto out;
4565
4566 sta_idx++;
4567 }
4568
4569 out:
4570 cb->args[2] = sta_idx;
4571 err = skb->len;
4572 out_err:
4573 rtnl_unlock();
4574
4575 return err;
4576 }
4577
4578 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4579 {
4580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4581 struct net_device *dev = info->user_ptr[1];
4582 struct station_info sinfo;
4583 struct sk_buff *msg;
4584 u8 *mac_addr = NULL;
4585 int err;
4586
4587 memset(&sinfo, 0, sizeof(sinfo));
4588
4589 if (!info->attrs[NL80211_ATTR_MAC])
4590 return -EINVAL;
4591
4592 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4593
4594 if (!rdev->ops->get_station)
4595 return -EOPNOTSUPP;
4596
4597 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4598 if (err)
4599 return err;
4600
4601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4602 if (!msg)
4603 return -ENOMEM;
4604
4605 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4606 info->snd_portid, info->snd_seq, 0,
4607 rdev, dev, mac_addr, &sinfo) < 0) {
4608 nlmsg_free(msg);
4609 return -ENOBUFS;
4610 }
4611
4612 return genlmsg_reply(msg, info);
4613 }
4614
4615 int cfg80211_check_station_change(struct wiphy *wiphy,
4616 struct station_parameters *params,
4617 enum cfg80211_station_type statype)
4618 {
4619 if (params->listen_interval != -1 &&
4620 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4621 return -EINVAL;
4622
4623 if (params->support_p2p_ps != -1 &&
4624 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4625 return -EINVAL;
4626
4627 if (params->aid &&
4628 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4629 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4630 return -EINVAL;
4631
4632 /* When you run into this, adjust the code below for the new flag */
4633 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4634
4635 switch (statype) {
4636 case CFG80211_STA_MESH_PEER_KERNEL:
4637 case CFG80211_STA_MESH_PEER_USER:
4638 /*
4639 * No ignoring the TDLS flag here -- the userspace mesh
4640 * code doesn't have the bug of including TDLS in the
4641 * mask everywhere.
4642 */
4643 if (params->sta_flags_mask &
4644 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4645 BIT(NL80211_STA_FLAG_MFP) |
4646 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4647 return -EINVAL;
4648 break;
4649 case CFG80211_STA_TDLS_PEER_SETUP:
4650 case CFG80211_STA_TDLS_PEER_ACTIVE:
4651 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4652 return -EINVAL;
4653 /* ignore since it can't change */
4654 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4655 break;
4656 default:
4657 /* disallow mesh-specific things */
4658 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4659 return -EINVAL;
4660 if (params->local_pm)
4661 return -EINVAL;
4662 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4663 return -EINVAL;
4664 }
4665
4666 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4667 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4668 /* TDLS can't be set, ... */
4669 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4670 return -EINVAL;
4671 /*
4672 * ... but don't bother the driver with it. This works around
4673 * a hostapd/wpa_supplicant issue -- it always includes the
4674 * TLDS_PEER flag in the mask even for AP mode.
4675 */
4676 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4677 }
4678
4679 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4680 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4681 /* reject other things that can't change */
4682 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4683 return -EINVAL;
4684 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4685 return -EINVAL;
4686 if (params->supported_rates)
4687 return -EINVAL;
4688 if (params->ext_capab || params->ht_capa || params->vht_capa)
4689 return -EINVAL;
4690 }
4691
4692 if (statype != CFG80211_STA_AP_CLIENT &&
4693 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4694 if (params->vlan)
4695 return -EINVAL;
4696 }
4697
4698 switch (statype) {
4699 case CFG80211_STA_AP_MLME_CLIENT:
4700 /* Use this only for authorizing/unauthorizing a station */
4701 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4702 return -EOPNOTSUPP;
4703 break;
4704 case CFG80211_STA_AP_CLIENT:
4705 case CFG80211_STA_AP_CLIENT_UNASSOC:
4706 /* accept only the listed bits */
4707 if (params->sta_flags_mask &
4708 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4709 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4710 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4711 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4712 BIT(NL80211_STA_FLAG_WME) |
4713 BIT(NL80211_STA_FLAG_MFP)))
4714 return -EINVAL;
4715
4716 /* but authenticated/associated only if driver handles it */
4717 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4718 params->sta_flags_mask &
4719 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4720 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4721 return -EINVAL;
4722 break;
4723 case CFG80211_STA_IBSS:
4724 case CFG80211_STA_AP_STA:
4725 /* reject any changes other than AUTHORIZED */
4726 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4727 return -EINVAL;
4728 break;
4729 case CFG80211_STA_TDLS_PEER_SETUP:
4730 /* reject any changes other than AUTHORIZED or WME */
4731 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4732 BIT(NL80211_STA_FLAG_WME)))
4733 return -EINVAL;
4734 /* force (at least) rates when authorizing */
4735 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4736 !params->supported_rates)
4737 return -EINVAL;
4738 break;
4739 case CFG80211_STA_TDLS_PEER_ACTIVE:
4740 /* reject any changes */
4741 return -EINVAL;
4742 case CFG80211_STA_MESH_PEER_KERNEL:
4743 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4744 return -EINVAL;
4745 break;
4746 case CFG80211_STA_MESH_PEER_USER:
4747 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4748 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4749 return -EINVAL;
4750 break;
4751 }
4752
4753 /*
4754 * Older kernel versions ignored this attribute entirely, so don't
4755 * reject attempts to update it but mark it as unused instead so the
4756 * driver won't look at the data.
4757 */
4758 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4759 statype != CFG80211_STA_TDLS_PEER_SETUP)
4760 params->opmode_notif_used = false;
4761
4762 return 0;
4763 }
4764 EXPORT_SYMBOL(cfg80211_check_station_change);
4765
4766 /*
4767 * Get vlan interface making sure it is running and on the right wiphy.
4768 */
4769 static struct net_device *get_vlan(struct genl_info *info,
4770 struct cfg80211_registered_device *rdev)
4771 {
4772 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4773 struct net_device *v;
4774 int ret;
4775
4776 if (!vlanattr)
4777 return NULL;
4778
4779 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4780 if (!v)
4781 return ERR_PTR(-ENODEV);
4782
4783 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4784 ret = -EINVAL;
4785 goto error;
4786 }
4787
4788 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4789 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4790 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4791 ret = -EINVAL;
4792 goto error;
4793 }
4794
4795 if (!netif_running(v)) {
4796 ret = -ENETDOWN;
4797 goto error;
4798 }
4799
4800 return v;
4801 error:
4802 dev_put(v);
4803 return ERR_PTR(ret);
4804 }
4805
4806 static const struct nla_policy
4807 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4808 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4809 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4810 };
4811
4812 static int nl80211_parse_sta_wme(struct genl_info *info,
4813 struct station_parameters *params)
4814 {
4815 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4816 struct nlattr *nla;
4817 int err;
4818
4819 /* parse WME attributes if present */
4820 if (!info->attrs[NL80211_ATTR_STA_WME])
4821 return 0;
4822
4823 nla = info->attrs[NL80211_ATTR_STA_WME];
4824 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4825 nl80211_sta_wme_policy, info->extack);
4826 if (err)
4827 return err;
4828
4829 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4830 params->uapsd_queues = nla_get_u8(
4831 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4832 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4833 return -EINVAL;
4834
4835 if (tb[NL80211_STA_WME_MAX_SP])
4836 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4837
4838 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4839 return -EINVAL;
4840
4841 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4842
4843 return 0;
4844 }
4845
4846 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4847 struct station_parameters *params)
4848 {
4849 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4850 params->supported_channels =
4851 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4852 params->supported_channels_len =
4853 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4854 /*
4855 * Need to include at least one (first channel, number of
4856 * channels) tuple for each subband, and must have proper
4857 * tuples for the rest of the data as well.
4858 */
4859 if (params->supported_channels_len < 2)
4860 return -EINVAL;
4861 if (params->supported_channels_len % 2)
4862 return -EINVAL;
4863 }
4864
4865 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4866 params->supported_oper_classes =
4867 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4868 params->supported_oper_classes_len =
4869 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4870 /*
4871 * The value of the Length field of the Supported Operating
4872 * Classes element is between 2 and 253.
4873 */
4874 if (params->supported_oper_classes_len < 2 ||
4875 params->supported_oper_classes_len > 253)
4876 return -EINVAL;
4877 }
4878 return 0;
4879 }
4880
4881 static int nl80211_set_station_tdls(struct genl_info *info,
4882 struct station_parameters *params)
4883 {
4884 int err;
4885 /* Dummy STA entry gets updated once the peer capabilities are known */
4886 if (info->attrs[NL80211_ATTR_PEER_AID])
4887 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4888 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4889 params->ht_capa =
4890 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4891 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4892 params->vht_capa =
4893 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4894
4895 err = nl80211_parse_sta_channel_info(info, params);
4896 if (err)
4897 return err;
4898
4899 return nl80211_parse_sta_wme(info, params);
4900 }
4901
4902 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4903 {
4904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4905 struct net_device *dev = info->user_ptr[1];
4906 struct station_parameters params;
4907 u8 *mac_addr;
4908 int err;
4909
4910 memset(&params, 0, sizeof(params));
4911
4912 if (!rdev->ops->change_station)
4913 return -EOPNOTSUPP;
4914
4915 /*
4916 * AID and listen_interval properties can be set only for unassociated
4917 * station. Include these parameters here and will check them in
4918 * cfg80211_check_station_change().
4919 */
4920 if (info->attrs[NL80211_ATTR_STA_AID])
4921 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4922
4923 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4924 params.listen_interval =
4925 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4926 else
4927 params.listen_interval = -1;
4928
4929 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4930 u8 tmp;
4931
4932 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4933 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4934 return -EINVAL;
4935
4936 params.support_p2p_ps = tmp;
4937 } else {
4938 params.support_p2p_ps = -1;
4939 }
4940
4941 if (!info->attrs[NL80211_ATTR_MAC])
4942 return -EINVAL;
4943
4944 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4945
4946 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4947 params.supported_rates =
4948 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4949 params.supported_rates_len =
4950 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4951 }
4952
4953 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4954 params.capability =
4955 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4956 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4957 }
4958
4959 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4960 params.ext_capab =
4961 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4962 params.ext_capab_len =
4963 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4964 }
4965
4966 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4967 return -EINVAL;
4968
4969 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4970 params.plink_action =
4971 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4972 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4973 return -EINVAL;
4974 }
4975
4976 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4977 params.plink_state =
4978 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4979 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4980 return -EINVAL;
4981 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4982 params.peer_aid = nla_get_u16(
4983 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4984 if (params.peer_aid > IEEE80211_MAX_AID)
4985 return -EINVAL;
4986 }
4987 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4988 }
4989
4990 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4991 enum nl80211_mesh_power_mode pm = nla_get_u32(
4992 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4993
4994 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4995 pm > NL80211_MESH_POWER_MAX)
4996 return -EINVAL;
4997
4998 params.local_pm = pm;
4999 }
5000
5001 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5002 params.opmode_notif_used = true;
5003 params.opmode_notif =
5004 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5005 }
5006
5007 /* Include parameters for TDLS peer (will check later) */
5008 err = nl80211_set_station_tdls(info, &params);
5009 if (err)
5010 return err;
5011
5012 params.vlan = get_vlan(info, rdev);
5013 if (IS_ERR(params.vlan))
5014 return PTR_ERR(params.vlan);
5015
5016 switch (dev->ieee80211_ptr->iftype) {
5017 case NL80211_IFTYPE_AP:
5018 case NL80211_IFTYPE_AP_VLAN:
5019 case NL80211_IFTYPE_P2P_GO:
5020 case NL80211_IFTYPE_P2P_CLIENT:
5021 case NL80211_IFTYPE_STATION:
5022 case NL80211_IFTYPE_ADHOC:
5023 case NL80211_IFTYPE_MESH_POINT:
5024 break;
5025 default:
5026 err = -EOPNOTSUPP;
5027 goto out_put_vlan;
5028 }
5029
5030 /* driver will call cfg80211_check_station_change() */
5031 err = rdev_change_station(rdev, dev, mac_addr, &params);
5032
5033 out_put_vlan:
5034 if (params.vlan)
5035 dev_put(params.vlan);
5036
5037 return err;
5038 }
5039
5040 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5041 {
5042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5043 int err;
5044 struct net_device *dev = info->user_ptr[1];
5045 struct station_parameters params;
5046 u8 *mac_addr = NULL;
5047 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5048 BIT(NL80211_STA_FLAG_ASSOCIATED);
5049
5050 memset(&params, 0, sizeof(params));
5051
5052 if (!rdev->ops->add_station)
5053 return -EOPNOTSUPP;
5054
5055 if (!info->attrs[NL80211_ATTR_MAC])
5056 return -EINVAL;
5057
5058 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5059 return -EINVAL;
5060
5061 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5062 return -EINVAL;
5063
5064 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5065 !info->attrs[NL80211_ATTR_PEER_AID])
5066 return -EINVAL;
5067
5068 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5069 params.supported_rates =
5070 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5071 params.supported_rates_len =
5072 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5073 params.listen_interval =
5074 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5075
5076 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5077 u8 tmp;
5078
5079 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5080 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5081 return -EINVAL;
5082
5083 params.support_p2p_ps = tmp;
5084 } else {
5085 /*
5086 * if not specified, assume it's supported for P2P GO interface,
5087 * and is NOT supported for AP interface
5088 */
5089 params.support_p2p_ps =
5090 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5091 }
5092
5093 if (info->attrs[NL80211_ATTR_PEER_AID])
5094 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5095 else
5096 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5097 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5098 return -EINVAL;
5099
5100 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5101 params.capability =
5102 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5103 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5104 }
5105
5106 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5107 params.ext_capab =
5108 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5109 params.ext_capab_len =
5110 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5111 }
5112
5113 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5114 params.ht_capa =
5115 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5116
5117 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5118 params.vht_capa =
5119 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5120
5121 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5122 params.opmode_notif_used = true;
5123 params.opmode_notif =
5124 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5125 }
5126
5127 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5128 params.plink_action =
5129 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5130 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5131 return -EINVAL;
5132 }
5133
5134 err = nl80211_parse_sta_channel_info(info, &params);
5135 if (err)
5136 return err;
5137
5138 err = nl80211_parse_sta_wme(info, &params);
5139 if (err)
5140 return err;
5141
5142 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5143 return -EINVAL;
5144
5145 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5146 * as userspace might just pass through the capabilities from the IEs
5147 * directly, rather than enforcing this restriction and returning an
5148 * error in this case.
5149 */
5150 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5151 params.ht_capa = NULL;
5152 params.vht_capa = NULL;
5153 }
5154
5155 /* When you run into this, adjust the code below for the new flag */
5156 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5157
5158 switch (dev->ieee80211_ptr->iftype) {
5159 case NL80211_IFTYPE_AP:
5160 case NL80211_IFTYPE_AP_VLAN:
5161 case NL80211_IFTYPE_P2P_GO:
5162 /* ignore WME attributes if iface/sta is not capable */
5163 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5164 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5165 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5166
5167 /* TDLS peers cannot be added */
5168 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5169 info->attrs[NL80211_ATTR_PEER_AID])
5170 return -EINVAL;
5171 /* but don't bother the driver with it */
5172 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5173
5174 /* allow authenticated/associated only if driver handles it */
5175 if (!(rdev->wiphy.features &
5176 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5177 params.sta_flags_mask & auth_assoc)
5178 return -EINVAL;
5179
5180 /* Older userspace, or userspace wanting to be compatible with
5181 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5182 * and assoc flags in the mask, but assumes the station will be
5183 * added as associated anyway since this was the required driver
5184 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5185 * introduced.
5186 * In order to not bother drivers with this quirk in the API
5187 * set the flags in both the mask and set for new stations in
5188 * this case.
5189 */
5190 if (!(params.sta_flags_mask & auth_assoc)) {
5191 params.sta_flags_mask |= auth_assoc;
5192 params.sta_flags_set |= auth_assoc;
5193 }
5194
5195 /* must be last in here for error handling */
5196 params.vlan = get_vlan(info, rdev);
5197 if (IS_ERR(params.vlan))
5198 return PTR_ERR(params.vlan);
5199 break;
5200 case NL80211_IFTYPE_MESH_POINT:
5201 /* ignore uAPSD data */
5202 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5203
5204 /* associated is disallowed */
5205 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5206 return -EINVAL;
5207 /* TDLS peers cannot be added */
5208 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5209 info->attrs[NL80211_ATTR_PEER_AID])
5210 return -EINVAL;
5211 break;
5212 case NL80211_IFTYPE_STATION:
5213 case NL80211_IFTYPE_P2P_CLIENT:
5214 /* ignore uAPSD data */
5215 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5216
5217 /* these are disallowed */
5218 if (params.sta_flags_mask &
5219 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5220 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5221 return -EINVAL;
5222 /* Only TDLS peers can be added */
5223 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5224 return -EINVAL;
5225 /* Can only add if TDLS ... */
5226 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5227 return -EOPNOTSUPP;
5228 /* ... with external setup is supported */
5229 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5230 return -EOPNOTSUPP;
5231 /*
5232 * Older wpa_supplicant versions always mark the TDLS peer
5233 * as authorized, but it shouldn't yet be.
5234 */
5235 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5236 break;
5237 default:
5238 return -EOPNOTSUPP;
5239 }
5240
5241 /* be aware of params.vlan when changing code here */
5242
5243 err = rdev_add_station(rdev, dev, mac_addr, &params);
5244
5245 if (params.vlan)
5246 dev_put(params.vlan);
5247 return err;
5248 }
5249
5250 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5251 {
5252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5253 struct net_device *dev = info->user_ptr[1];
5254 struct station_del_parameters params;
5255
5256 memset(&params, 0, sizeof(params));
5257
5258 if (info->attrs[NL80211_ATTR_MAC])
5259 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5260
5261 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5265 return -EINVAL;
5266
5267 if (!rdev->ops->del_station)
5268 return -EOPNOTSUPP;
5269
5270 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5271 params.subtype =
5272 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5273 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5274 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5275 return -EINVAL;
5276 } else {
5277 /* Default to Deauthentication frame */
5278 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5279 }
5280
5281 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5282 params.reason_code =
5283 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5284 if (params.reason_code == 0)
5285 return -EINVAL; /* 0 is reserved */
5286 } else {
5287 /* Default to reason code 2 */
5288 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5289 }
5290
5291 return rdev_del_station(rdev, dev, &params);
5292 }
5293
5294 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5295 int flags, struct net_device *dev,
5296 u8 *dst, u8 *next_hop,
5297 struct mpath_info *pinfo)
5298 {
5299 void *hdr;
5300 struct nlattr *pinfoattr;
5301
5302 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5303 if (!hdr)
5304 return -1;
5305
5306 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5307 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5308 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5309 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5310 goto nla_put_failure;
5311
5312 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5313 if (!pinfoattr)
5314 goto nla_put_failure;
5315 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5316 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5317 pinfo->frame_qlen))
5318 goto nla_put_failure;
5319 if (((pinfo->filled & MPATH_INFO_SN) &&
5320 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5321 ((pinfo->filled & MPATH_INFO_METRIC) &&
5322 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5323 pinfo->metric)) ||
5324 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5325 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5326 pinfo->exptime)) ||
5327 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5328 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5329 pinfo->flags)) ||
5330 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5331 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5332 pinfo->discovery_timeout)) ||
5333 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5334 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5335 pinfo->discovery_retries)))
5336 goto nla_put_failure;
5337
5338 nla_nest_end(msg, pinfoattr);
5339
5340 genlmsg_end(msg, hdr);
5341 return 0;
5342
5343 nla_put_failure:
5344 genlmsg_cancel(msg, hdr);
5345 return -EMSGSIZE;
5346 }
5347
5348 static int nl80211_dump_mpath(struct sk_buff *skb,
5349 struct netlink_callback *cb)
5350 {
5351 struct mpath_info pinfo;
5352 struct cfg80211_registered_device *rdev;
5353 struct wireless_dev *wdev;
5354 u8 dst[ETH_ALEN];
5355 u8 next_hop[ETH_ALEN];
5356 int path_idx = cb->args[2];
5357 int err;
5358
5359 rtnl_lock();
5360 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5361 if (err)
5362 goto out_err;
5363
5364 if (!rdev->ops->dump_mpath) {
5365 err = -EOPNOTSUPP;
5366 goto out_err;
5367 }
5368
5369 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5370 err = -EOPNOTSUPP;
5371 goto out_err;
5372 }
5373
5374 while (1) {
5375 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5376 next_hop, &pinfo);
5377 if (err == -ENOENT)
5378 break;
5379 if (err)
5380 goto out_err;
5381
5382 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5383 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5384 wdev->netdev, dst, next_hop,
5385 &pinfo) < 0)
5386 goto out;
5387
5388 path_idx++;
5389 }
5390
5391 out:
5392 cb->args[2] = path_idx;
5393 err = skb->len;
5394 out_err:
5395 rtnl_unlock();
5396 return err;
5397 }
5398
5399 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5400 {
5401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5402 int err;
5403 struct net_device *dev = info->user_ptr[1];
5404 struct mpath_info pinfo;
5405 struct sk_buff *msg;
5406 u8 *dst = NULL;
5407 u8 next_hop[ETH_ALEN];
5408
5409 memset(&pinfo, 0, sizeof(pinfo));
5410
5411 if (!info->attrs[NL80211_ATTR_MAC])
5412 return -EINVAL;
5413
5414 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5415
5416 if (!rdev->ops->get_mpath)
5417 return -EOPNOTSUPP;
5418
5419 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5420 return -EOPNOTSUPP;
5421
5422 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5423 if (err)
5424 return err;
5425
5426 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5427 if (!msg)
5428 return -ENOMEM;
5429
5430 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5431 dev, dst, next_hop, &pinfo) < 0) {
5432 nlmsg_free(msg);
5433 return -ENOBUFS;
5434 }
5435
5436 return genlmsg_reply(msg, info);
5437 }
5438
5439 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5440 {
5441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5442 struct net_device *dev = info->user_ptr[1];
5443 u8 *dst = NULL;
5444 u8 *next_hop = NULL;
5445
5446 if (!info->attrs[NL80211_ATTR_MAC])
5447 return -EINVAL;
5448
5449 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5450 return -EINVAL;
5451
5452 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5453 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5454
5455 if (!rdev->ops->change_mpath)
5456 return -EOPNOTSUPP;
5457
5458 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5459 return -EOPNOTSUPP;
5460
5461 return rdev_change_mpath(rdev, dev, dst, next_hop);
5462 }
5463
5464 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5465 {
5466 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5467 struct net_device *dev = info->user_ptr[1];
5468 u8 *dst = NULL;
5469 u8 *next_hop = NULL;
5470
5471 if (!info->attrs[NL80211_ATTR_MAC])
5472 return -EINVAL;
5473
5474 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5475 return -EINVAL;
5476
5477 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5478 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5479
5480 if (!rdev->ops->add_mpath)
5481 return -EOPNOTSUPP;
5482
5483 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5484 return -EOPNOTSUPP;
5485
5486 return rdev_add_mpath(rdev, dev, dst, next_hop);
5487 }
5488
5489 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5490 {
5491 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5492 struct net_device *dev = info->user_ptr[1];
5493 u8 *dst = NULL;
5494
5495 if (info->attrs[NL80211_ATTR_MAC])
5496 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5497
5498 if (!rdev->ops->del_mpath)
5499 return -EOPNOTSUPP;
5500
5501 return rdev_del_mpath(rdev, dev, dst);
5502 }
5503
5504 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5505 {
5506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5507 int err;
5508 struct net_device *dev = info->user_ptr[1];
5509 struct mpath_info pinfo;
5510 struct sk_buff *msg;
5511 u8 *dst = NULL;
5512 u8 mpp[ETH_ALEN];
5513
5514 memset(&pinfo, 0, sizeof(pinfo));
5515
5516 if (!info->attrs[NL80211_ATTR_MAC])
5517 return -EINVAL;
5518
5519 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5520
5521 if (!rdev->ops->get_mpp)
5522 return -EOPNOTSUPP;
5523
5524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5525 return -EOPNOTSUPP;
5526
5527 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5528 if (err)
5529 return err;
5530
5531 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5532 if (!msg)
5533 return -ENOMEM;
5534
5535 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5536 dev, dst, mpp, &pinfo) < 0) {
5537 nlmsg_free(msg);
5538 return -ENOBUFS;
5539 }
5540
5541 return genlmsg_reply(msg, info);
5542 }
5543
5544 static int nl80211_dump_mpp(struct sk_buff *skb,
5545 struct netlink_callback *cb)
5546 {
5547 struct mpath_info pinfo;
5548 struct cfg80211_registered_device *rdev;
5549 struct wireless_dev *wdev;
5550 u8 dst[ETH_ALEN];
5551 u8 mpp[ETH_ALEN];
5552 int path_idx = cb->args[2];
5553 int err;
5554
5555 rtnl_lock();
5556 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5557 if (err)
5558 goto out_err;
5559
5560 if (!rdev->ops->dump_mpp) {
5561 err = -EOPNOTSUPP;
5562 goto out_err;
5563 }
5564
5565 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5566 err = -EOPNOTSUPP;
5567 goto out_err;
5568 }
5569
5570 while (1) {
5571 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5572 mpp, &pinfo);
5573 if (err == -ENOENT)
5574 break;
5575 if (err)
5576 goto out_err;
5577
5578 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5579 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5580 wdev->netdev, dst, mpp,
5581 &pinfo) < 0)
5582 goto out;
5583
5584 path_idx++;
5585 }
5586
5587 out:
5588 cb->args[2] = path_idx;
5589 err = skb->len;
5590 out_err:
5591 rtnl_unlock();
5592 return err;
5593 }
5594
5595 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5596 {
5597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5598 struct net_device *dev = info->user_ptr[1];
5599 struct wireless_dev *wdev = dev->ieee80211_ptr;
5600 struct bss_parameters params;
5601 int err;
5602
5603 memset(&params, 0, sizeof(params));
5604 /* default to not changing parameters */
5605 params.use_cts_prot = -1;
5606 params.use_short_preamble = -1;
5607 params.use_short_slot_time = -1;
5608 params.ap_isolate = -1;
5609 params.ht_opmode = -1;
5610 params.p2p_ctwindow = -1;
5611 params.p2p_opp_ps = -1;
5612
5613 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5614 params.use_cts_prot =
5615 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5616 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5617 params.use_short_preamble =
5618 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5619 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5620 params.use_short_slot_time =
5621 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5622 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5623 params.basic_rates =
5624 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5625 params.basic_rates_len =
5626 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5627 }
5628 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5629 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5630 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5631 params.ht_opmode =
5632 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5633
5634 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5635 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5636 return -EINVAL;
5637 params.p2p_ctwindow =
5638 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5639 if (params.p2p_ctwindow < 0)
5640 return -EINVAL;
5641 if (params.p2p_ctwindow != 0 &&
5642 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5643 return -EINVAL;
5644 }
5645
5646 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5647 u8 tmp;
5648
5649 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5650 return -EINVAL;
5651 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5652 if (tmp > 1)
5653 return -EINVAL;
5654 params.p2p_opp_ps = tmp;
5655 if (params.p2p_opp_ps &&
5656 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5657 return -EINVAL;
5658 }
5659
5660 if (!rdev->ops->change_bss)
5661 return -EOPNOTSUPP;
5662
5663 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5664 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5665 return -EOPNOTSUPP;
5666
5667 wdev_lock(wdev);
5668 err = rdev_change_bss(rdev, dev, &params);
5669 wdev_unlock(wdev);
5670
5671 return err;
5672 }
5673
5674 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5675 {
5676 char *data = NULL;
5677 bool is_indoor;
5678 enum nl80211_user_reg_hint_type user_reg_hint_type;
5679 u32 owner_nlportid;
5680
5681 /*
5682 * You should only get this when cfg80211 hasn't yet initialized
5683 * completely when built-in to the kernel right between the time
5684 * window between nl80211_init() and regulatory_init(), if that is
5685 * even possible.
5686 */
5687 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5688 return -EINPROGRESS;
5689
5690 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5691 user_reg_hint_type =
5692 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5693 else
5694 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5695
5696 switch (user_reg_hint_type) {
5697 case NL80211_USER_REG_HINT_USER:
5698 case NL80211_USER_REG_HINT_CELL_BASE:
5699 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5700 return -EINVAL;
5701
5702 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5703 return regulatory_hint_user(data, user_reg_hint_type);
5704 case NL80211_USER_REG_HINT_INDOOR:
5705 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5706 owner_nlportid = info->snd_portid;
5707 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5708 } else {
5709 owner_nlportid = 0;
5710 is_indoor = true;
5711 }
5712
5713 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5714 default:
5715 return -EINVAL;
5716 }
5717 }
5718
5719 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5720 {
5721 return reg_reload_regdb();
5722 }
5723
5724 static int nl80211_get_mesh_config(struct sk_buff *skb,
5725 struct genl_info *info)
5726 {
5727 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5728 struct net_device *dev = info->user_ptr[1];
5729 struct wireless_dev *wdev = dev->ieee80211_ptr;
5730 struct mesh_config cur_params;
5731 int err = 0;
5732 void *hdr;
5733 struct nlattr *pinfoattr;
5734 struct sk_buff *msg;
5735
5736 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5737 return -EOPNOTSUPP;
5738
5739 if (!rdev->ops->get_mesh_config)
5740 return -EOPNOTSUPP;
5741
5742 wdev_lock(wdev);
5743 /* If not connected, get default parameters */
5744 if (!wdev->mesh_id_len)
5745 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5746 else
5747 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5748 wdev_unlock(wdev);
5749
5750 if (err)
5751 return err;
5752
5753 /* Draw up a netlink message to send back */
5754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5755 if (!msg)
5756 return -ENOMEM;
5757 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5758 NL80211_CMD_GET_MESH_CONFIG);
5759 if (!hdr)
5760 goto out;
5761 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5762 if (!pinfoattr)
5763 goto nla_put_failure;
5764 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5765 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5766 cur_params.dot11MeshRetryTimeout) ||
5767 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5768 cur_params.dot11MeshConfirmTimeout) ||
5769 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5770 cur_params.dot11MeshHoldingTimeout) ||
5771 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5772 cur_params.dot11MeshMaxPeerLinks) ||
5773 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5774 cur_params.dot11MeshMaxRetries) ||
5775 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5776 cur_params.dot11MeshTTL) ||
5777 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5778 cur_params.element_ttl) ||
5779 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5780 cur_params.auto_open_plinks) ||
5781 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5782 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5783 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5784 cur_params.dot11MeshHWMPmaxPREQretries) ||
5785 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5786 cur_params.path_refresh_time) ||
5787 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5788 cur_params.min_discovery_timeout) ||
5789 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5790 cur_params.dot11MeshHWMPactivePathTimeout) ||
5791 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5792 cur_params.dot11MeshHWMPpreqMinInterval) ||
5793 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5794 cur_params.dot11MeshHWMPperrMinInterval) ||
5795 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5796 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5797 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5798 cur_params.dot11MeshHWMPRootMode) ||
5799 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5800 cur_params.dot11MeshHWMPRannInterval) ||
5801 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5802 cur_params.dot11MeshGateAnnouncementProtocol) ||
5803 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5804 cur_params.dot11MeshForwarding) ||
5805 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5806 cur_params.rssi_threshold) ||
5807 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5808 cur_params.ht_opmode) ||
5809 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5810 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5811 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5812 cur_params.dot11MeshHWMProotInterval) ||
5813 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5814 cur_params.dot11MeshHWMPconfirmationInterval) ||
5815 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5816 cur_params.power_mode) ||
5817 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5818 cur_params.dot11MeshAwakeWindowDuration) ||
5819 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5820 cur_params.plink_timeout))
5821 goto nla_put_failure;
5822 nla_nest_end(msg, pinfoattr);
5823 genlmsg_end(msg, hdr);
5824 return genlmsg_reply(msg, info);
5825
5826 nla_put_failure:
5827 genlmsg_cancel(msg, hdr);
5828 out:
5829 nlmsg_free(msg);
5830 return -ENOBUFS;
5831 }
5832
5833 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5834 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5835 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5836 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5837 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5838 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5839 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5840 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5841 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5842 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5843 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5844 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5845 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5846 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5847 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5848 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5849 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5850 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5851 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5852 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5853 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5854 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5855 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5856 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5857 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5858 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5859 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5860 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5861 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5862 };
5863
5864 static const struct nla_policy
5865 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5866 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5867 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5868 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5869 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5870 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5871 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5872 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5873 .len = IEEE80211_MAX_DATA_LEN },
5874 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5875 };
5876
5877 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5878 {
5879 u8 val = nla_get_u8(nla);
5880 if (val < min || val > max)
5881 return -EINVAL;
5882 *out = val;
5883 return 0;
5884 }
5885
5886 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5887 {
5888 u8 val = nla_get_u8(nla);
5889 if (val < min || val > max)
5890 return -EINVAL;
5891 *out = val;
5892 return 0;
5893 }
5894
5895 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5896 {
5897 u16 val = nla_get_u16(nla);
5898 if (val < min || val > max)
5899 return -EINVAL;
5900 *out = val;
5901 return 0;
5902 }
5903
5904 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5905 {
5906 u32 val = nla_get_u32(nla);
5907 if (val < min || val > max)
5908 return -EINVAL;
5909 *out = val;
5910 return 0;
5911 }
5912
5913 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5914 {
5915 s32 val = nla_get_s32(nla);
5916 if (val < min || val > max)
5917 return -EINVAL;
5918 *out = val;
5919 return 0;
5920 }
5921
5922 static int nl80211_check_power_mode(const struct nlattr *nla,
5923 enum nl80211_mesh_power_mode min,
5924 enum nl80211_mesh_power_mode max,
5925 enum nl80211_mesh_power_mode *out)
5926 {
5927 u32 val = nla_get_u32(nla);
5928 if (val < min || val > max)
5929 return -EINVAL;
5930 *out = val;
5931 return 0;
5932 }
5933
5934 static int nl80211_parse_mesh_config(struct genl_info *info,
5935 struct mesh_config *cfg,
5936 u32 *mask_out)
5937 {
5938 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5939 u32 mask = 0;
5940 u16 ht_opmode;
5941
5942 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5943 do { \
5944 if (tb[attr]) { \
5945 if (fn(tb[attr], min, max, &cfg->param)) \
5946 return -EINVAL; \
5947 mask |= (1 << (attr - 1)); \
5948 } \
5949 } while (0)
5950
5951 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5952 return -EINVAL;
5953 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5954 info->attrs[NL80211_ATTR_MESH_CONFIG],
5955 nl80211_meshconf_params_policy, info->extack))
5956 return -EINVAL;
5957
5958 /* This makes sure that there aren't more than 32 mesh config
5959 * parameters (otherwise our bitfield scheme would not work.) */
5960 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5961
5962 /* Fill in the params struct */
5963 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5964 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5965 nl80211_check_u16);
5966 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5967 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5968 nl80211_check_u16);
5969 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5970 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5971 nl80211_check_u16);
5972 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5973 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5974 nl80211_check_u16);
5975 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5976 mask, NL80211_MESHCONF_MAX_RETRIES,
5977 nl80211_check_u8);
5978 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5979 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5981 mask, NL80211_MESHCONF_ELEMENT_TTL,
5982 nl80211_check_u8);
5983 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5984 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5985 nl80211_check_bool);
5986 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5987 1, 255, mask,
5988 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5989 nl80211_check_u32);
5990 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5991 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5992 nl80211_check_u8);
5993 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5994 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5995 nl80211_check_u32);
5996 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5997 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5998 nl80211_check_u16);
5999 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6000 1, 65535, mask,
6001 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6002 nl80211_check_u32);
6003 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6004 1, 65535, mask,
6005 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6006 nl80211_check_u16);
6007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6008 1, 65535, mask,
6009 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6010 nl80211_check_u16);
6011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6012 dot11MeshHWMPnetDiameterTraversalTime,
6013 1, 65535, mask,
6014 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6015 nl80211_check_u16);
6016 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6017 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6018 nl80211_check_u8);
6019 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6020 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6021 nl80211_check_u16);
6022 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6023 dot11MeshGateAnnouncementProtocol, 0, 1,
6024 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6025 nl80211_check_bool);
6026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6027 mask, NL80211_MESHCONF_FORWARDING,
6028 nl80211_check_bool);
6029 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6030 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6031 nl80211_check_s32);
6032 /*
6033 * Check HT operation mode based on
6034 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6035 */
6036 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6037 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6038
6039 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6040 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6041 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6042 return -EINVAL;
6043
6044 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6045 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6046 return -EINVAL;
6047
6048 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6049 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6050 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6051 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6052 return -EINVAL;
6053 break;
6054 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6055 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6056 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6057 return -EINVAL;
6058 break;
6059 }
6060 cfg->ht_opmode = ht_opmode;
6061 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6062 }
6063 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6064 1, 65535, mask,
6065 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6066 nl80211_check_u32);
6067 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6068 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6069 nl80211_check_u16);
6070 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6071 dot11MeshHWMPconfirmationInterval,
6072 1, 65535, mask,
6073 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6074 nl80211_check_u16);
6075 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6076 NL80211_MESH_POWER_ACTIVE,
6077 NL80211_MESH_POWER_MAX,
6078 mask, NL80211_MESHCONF_POWER_MODE,
6079 nl80211_check_power_mode);
6080 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6081 0, 65535, mask,
6082 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6083 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6084 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6085 nl80211_check_u32);
6086 if (mask_out)
6087 *mask_out = mask;
6088
6089 return 0;
6090
6091 #undef FILL_IN_MESH_PARAM_IF_SET
6092 }
6093
6094 static int nl80211_parse_mesh_setup(struct genl_info *info,
6095 struct mesh_setup *setup)
6096 {
6097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6098 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6099
6100 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6101 return -EINVAL;
6102 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6103 info->attrs[NL80211_ATTR_MESH_SETUP],
6104 nl80211_mesh_setup_params_policy, info->extack))
6105 return -EINVAL;
6106
6107 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6108 setup->sync_method =
6109 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6110 IEEE80211_SYNC_METHOD_VENDOR :
6111 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6112
6113 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6114 setup->path_sel_proto =
6115 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6116 IEEE80211_PATH_PROTOCOL_VENDOR :
6117 IEEE80211_PATH_PROTOCOL_HWMP;
6118
6119 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6120 setup->path_metric =
6121 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6122 IEEE80211_PATH_METRIC_VENDOR :
6123 IEEE80211_PATH_METRIC_AIRTIME;
6124
6125 if (tb[NL80211_MESH_SETUP_IE]) {
6126 struct nlattr *ieattr =
6127 tb[NL80211_MESH_SETUP_IE];
6128 if (!is_valid_ie_attr(ieattr))
6129 return -EINVAL;
6130 setup->ie = nla_data(ieattr);
6131 setup->ie_len = nla_len(ieattr);
6132 }
6133 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6134 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6135 return -EINVAL;
6136 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6137 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6138 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6139 if (setup->is_secure)
6140 setup->user_mpm = true;
6141
6142 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6143 if (!setup->user_mpm)
6144 return -EINVAL;
6145 setup->auth_id =
6146 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6147 }
6148
6149 return 0;
6150 }
6151
6152 static int nl80211_update_mesh_config(struct sk_buff *skb,
6153 struct genl_info *info)
6154 {
6155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6156 struct net_device *dev = info->user_ptr[1];
6157 struct wireless_dev *wdev = dev->ieee80211_ptr;
6158 struct mesh_config cfg;
6159 u32 mask;
6160 int err;
6161
6162 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6163 return -EOPNOTSUPP;
6164
6165 if (!rdev->ops->update_mesh_config)
6166 return -EOPNOTSUPP;
6167
6168 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6169 if (err)
6170 return err;
6171
6172 wdev_lock(wdev);
6173 if (!wdev->mesh_id_len)
6174 err = -ENOLINK;
6175
6176 if (!err)
6177 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6178
6179 wdev_unlock(wdev);
6180
6181 return err;
6182 }
6183
6184 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6185 struct sk_buff *msg)
6186 {
6187 struct nlattr *nl_reg_rules;
6188 unsigned int i;
6189
6190 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6191 (regdom->dfs_region &&
6192 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6193 goto nla_put_failure;
6194
6195 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6196 if (!nl_reg_rules)
6197 goto nla_put_failure;
6198
6199 for (i = 0; i < regdom->n_reg_rules; i++) {
6200 struct nlattr *nl_reg_rule;
6201 const struct ieee80211_reg_rule *reg_rule;
6202 const struct ieee80211_freq_range *freq_range;
6203 const struct ieee80211_power_rule *power_rule;
6204 unsigned int max_bandwidth_khz;
6205
6206 reg_rule = &regdom->reg_rules[i];
6207 freq_range = &reg_rule->freq_range;
6208 power_rule = &reg_rule->power_rule;
6209
6210 nl_reg_rule = nla_nest_start(msg, i);
6211 if (!nl_reg_rule)
6212 goto nla_put_failure;
6213
6214 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6215 if (!max_bandwidth_khz)
6216 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6217 reg_rule);
6218
6219 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6220 reg_rule->flags) ||
6221 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6222 freq_range->start_freq_khz) ||
6223 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6224 freq_range->end_freq_khz) ||
6225 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6226 max_bandwidth_khz) ||
6227 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6228 power_rule->max_antenna_gain) ||
6229 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6230 power_rule->max_eirp) ||
6231 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6232 reg_rule->dfs_cac_ms))
6233 goto nla_put_failure;
6234
6235 nla_nest_end(msg, nl_reg_rule);
6236 }
6237
6238 nla_nest_end(msg, nl_reg_rules);
6239 return 0;
6240
6241 nla_put_failure:
6242 return -EMSGSIZE;
6243 }
6244
6245 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6246 {
6247 const struct ieee80211_regdomain *regdom = NULL;
6248 struct cfg80211_registered_device *rdev;
6249 struct wiphy *wiphy = NULL;
6250 struct sk_buff *msg;
6251 void *hdr;
6252
6253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6254 if (!msg)
6255 return -ENOBUFS;
6256
6257 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6258 NL80211_CMD_GET_REG);
6259 if (!hdr)
6260 goto put_failure;
6261
6262 if (info->attrs[NL80211_ATTR_WIPHY]) {
6263 bool self_managed;
6264
6265 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6266 if (IS_ERR(rdev)) {
6267 nlmsg_free(msg);
6268 return PTR_ERR(rdev);
6269 }
6270
6271 wiphy = &rdev->wiphy;
6272 self_managed = wiphy->regulatory_flags &
6273 REGULATORY_WIPHY_SELF_MANAGED;
6274 regdom = get_wiphy_regdom(wiphy);
6275
6276 /* a self-managed-reg device must have a private regdom */
6277 if (WARN_ON(!regdom && self_managed)) {
6278 nlmsg_free(msg);
6279 return -EINVAL;
6280 }
6281
6282 if (regdom &&
6283 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6284 goto nla_put_failure;
6285 }
6286
6287 if (!wiphy && reg_last_request_cell_base() &&
6288 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6289 NL80211_USER_REG_HINT_CELL_BASE))
6290 goto nla_put_failure;
6291
6292 rcu_read_lock();
6293
6294 if (!regdom)
6295 regdom = rcu_dereference(cfg80211_regdomain);
6296
6297 if (nl80211_put_regdom(regdom, msg))
6298 goto nla_put_failure_rcu;
6299
6300 rcu_read_unlock();
6301
6302 genlmsg_end(msg, hdr);
6303 return genlmsg_reply(msg, info);
6304
6305 nla_put_failure_rcu:
6306 rcu_read_unlock();
6307 nla_put_failure:
6308 genlmsg_cancel(msg, hdr);
6309 put_failure:
6310 nlmsg_free(msg);
6311 return -EMSGSIZE;
6312 }
6313
6314 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6315 u32 seq, int flags, struct wiphy *wiphy,
6316 const struct ieee80211_regdomain *regdom)
6317 {
6318 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6319 NL80211_CMD_GET_REG);
6320
6321 if (!hdr)
6322 return -1;
6323
6324 genl_dump_check_consistent(cb, hdr);
6325
6326 if (nl80211_put_regdom(regdom, msg))
6327 goto nla_put_failure;
6328
6329 if (!wiphy && reg_last_request_cell_base() &&
6330 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6331 NL80211_USER_REG_HINT_CELL_BASE))
6332 goto nla_put_failure;
6333
6334 if (wiphy &&
6335 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6336 goto nla_put_failure;
6337
6338 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6339 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6340 goto nla_put_failure;
6341
6342 genlmsg_end(msg, hdr);
6343 return 0;
6344
6345 nla_put_failure:
6346 genlmsg_cancel(msg, hdr);
6347 return -EMSGSIZE;
6348 }
6349
6350 static int nl80211_get_reg_dump(struct sk_buff *skb,
6351 struct netlink_callback *cb)
6352 {
6353 const struct ieee80211_regdomain *regdom = NULL;
6354 struct cfg80211_registered_device *rdev;
6355 int err, reg_idx, start = cb->args[2];
6356
6357 rtnl_lock();
6358
6359 if (cfg80211_regdomain && start == 0) {
6360 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6361 NLM_F_MULTI, NULL,
6362 rtnl_dereference(cfg80211_regdomain));
6363 if (err < 0)
6364 goto out_err;
6365 }
6366
6367 /* the global regdom is idx 0 */
6368 reg_idx = 1;
6369 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6370 regdom = get_wiphy_regdom(&rdev->wiphy);
6371 if (!regdom)
6372 continue;
6373
6374 if (++reg_idx <= start)
6375 continue;
6376
6377 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6378 NLM_F_MULTI, &rdev->wiphy, regdom);
6379 if (err < 0) {
6380 reg_idx--;
6381 break;
6382 }
6383 }
6384
6385 cb->args[2] = reg_idx;
6386 err = skb->len;
6387 out_err:
6388 rtnl_unlock();
6389 return err;
6390 }
6391
6392 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6393 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6394 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6395 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6396 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6397 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6398 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6399 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6400 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6401 };
6402
6403 static int parse_reg_rule(struct nlattr *tb[],
6404 struct ieee80211_reg_rule *reg_rule)
6405 {
6406 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6407 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6408
6409 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6410 return -EINVAL;
6411 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6412 return -EINVAL;
6413 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6414 return -EINVAL;
6415 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6416 return -EINVAL;
6417 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6418 return -EINVAL;
6419
6420 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6421
6422 freq_range->start_freq_khz =
6423 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6424 freq_range->end_freq_khz =
6425 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6426 freq_range->max_bandwidth_khz =
6427 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6428
6429 power_rule->max_eirp =
6430 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6431
6432 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6433 power_rule->max_antenna_gain =
6434 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6435
6436 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6437 reg_rule->dfs_cac_ms =
6438 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6439
6440 return 0;
6441 }
6442
6443 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6444 {
6445 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6446 struct nlattr *nl_reg_rule;
6447 char *alpha2;
6448 int rem_reg_rules, r;
6449 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6450 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6451 struct ieee80211_regdomain *rd;
6452
6453 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6454 return -EINVAL;
6455
6456 if (!info->attrs[NL80211_ATTR_REG_RULES])
6457 return -EINVAL;
6458
6459 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6460
6461 if (info->attrs[NL80211_ATTR_DFS_REGION])
6462 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6463
6464 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6465 rem_reg_rules) {
6466 num_rules++;
6467 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6468 return -EINVAL;
6469 }
6470
6471 if (!reg_is_valid_request(alpha2))
6472 return -EINVAL;
6473
6474 size_of_regd = sizeof(struct ieee80211_regdomain) +
6475 num_rules * sizeof(struct ieee80211_reg_rule);
6476
6477 rd = kzalloc(size_of_regd, GFP_KERNEL);
6478 if (!rd)
6479 return -ENOMEM;
6480
6481 rd->n_reg_rules = num_rules;
6482 rd->alpha2[0] = alpha2[0];
6483 rd->alpha2[1] = alpha2[1];
6484
6485 /*
6486 * Disable DFS master mode if the DFS region was
6487 * not supported or known on this kernel.
6488 */
6489 if (reg_supported_dfs_region(dfs_region))
6490 rd->dfs_region = dfs_region;
6491
6492 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6493 rem_reg_rules) {
6494 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6495 nl_reg_rule, reg_rule_policy,
6496 info->extack);
6497 if (r)
6498 goto bad_reg;
6499 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6500 if (r)
6501 goto bad_reg;
6502
6503 rule_idx++;
6504
6505 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6506 r = -EINVAL;
6507 goto bad_reg;
6508 }
6509 }
6510
6511 /* set_regdom takes ownership of rd */
6512 return set_regdom(rd, REGD_SOURCE_CRDA);
6513 bad_reg:
6514 kfree(rd);
6515 return r;
6516 }
6517 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6518
6519 static int validate_scan_freqs(struct nlattr *freqs)
6520 {
6521 struct nlattr *attr1, *attr2;
6522 int n_channels = 0, tmp1, tmp2;
6523
6524 nla_for_each_nested(attr1, freqs, tmp1)
6525 if (nla_len(attr1) != sizeof(u32))
6526 return 0;
6527
6528 nla_for_each_nested(attr1, freqs, tmp1) {
6529 n_channels++;
6530 /*
6531 * Some hardware has a limited channel list for
6532 * scanning, and it is pretty much nonsensical
6533 * to scan for a channel twice, so disallow that
6534 * and don't require drivers to check that the
6535 * channel list they get isn't longer than what
6536 * they can scan, as long as they can scan all
6537 * the channels they registered at once.
6538 */
6539 nla_for_each_nested(attr2, freqs, tmp2)
6540 if (attr1 != attr2 &&
6541 nla_get_u32(attr1) == nla_get_u32(attr2))
6542 return 0;
6543 }
6544
6545 return n_channels;
6546 }
6547
6548 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6549 {
6550 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6551 }
6552
6553 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6554 struct cfg80211_bss_selection *bss_select)
6555 {
6556 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6557 struct nlattr *nest;
6558 int err;
6559 bool found = false;
6560 int i;
6561
6562 /* only process one nested attribute */
6563 nest = nla_data(nla);
6564 if (!nla_ok(nest, nla_len(nest)))
6565 return -EINVAL;
6566
6567 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6568 nl80211_bss_select_policy, NULL);
6569 if (err)
6570 return err;
6571
6572 /* only one attribute may be given */
6573 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6574 if (attr[i]) {
6575 if (found)
6576 return -EINVAL;
6577 found = true;
6578 }
6579 }
6580
6581 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6582
6583 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6584 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6585
6586 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6587 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6588 bss_select->param.band_pref =
6589 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6590 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6591 return -EINVAL;
6592 }
6593
6594 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6595 struct nl80211_bss_select_rssi_adjust *adj_param;
6596
6597 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6598 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6599 bss_select->param.adjust.band = adj_param->band;
6600 bss_select->param.adjust.delta = adj_param->delta;
6601 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6602 return -EINVAL;
6603 }
6604
6605 /* user-space did not provide behaviour attribute */
6606 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6607 return -EINVAL;
6608
6609 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6610 return -EINVAL;
6611
6612 return 0;
6613 }
6614
6615 static int nl80211_parse_random_mac(struct nlattr **attrs,
6616 u8 *mac_addr, u8 *mac_addr_mask)
6617 {
6618 int i;
6619
6620 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6621 eth_zero_addr(mac_addr);
6622 eth_zero_addr(mac_addr_mask);
6623 mac_addr[0] = 0x2;
6624 mac_addr_mask[0] = 0x3;
6625
6626 return 0;
6627 }
6628
6629 /* need both or none */
6630 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6631 return -EINVAL;
6632
6633 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6634 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6635
6636 /* don't allow or configure an mcast address */
6637 if (!is_multicast_ether_addr(mac_addr_mask) ||
6638 is_multicast_ether_addr(mac_addr))
6639 return -EINVAL;
6640
6641 /*
6642 * allow users to pass a MAC address that has bits set outside
6643 * of the mask, but don't bother drivers with having to deal
6644 * with such bits
6645 */
6646 for (i = 0; i < ETH_ALEN; i++)
6647 mac_addr[i] &= mac_addr_mask[i];
6648
6649 return 0;
6650 }
6651
6652 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6653 {
6654 ASSERT_WDEV_LOCK(wdev);
6655
6656 if (!cfg80211_beaconing_iface_active(wdev))
6657 return true;
6658
6659 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6660 return true;
6661
6662 return regulatory_pre_cac_allowed(wdev->wiphy);
6663 }
6664
6665 static int
6666 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6667 void *request, struct nlattr **attrs,
6668 bool is_sched_scan)
6669 {
6670 u8 *mac_addr, *mac_addr_mask;
6671 u32 *flags;
6672 enum nl80211_feature_flags randomness_flag;
6673
6674 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6675 return 0;
6676
6677 if (is_sched_scan) {
6678 struct cfg80211_sched_scan_request *req = request;
6679
6680 randomness_flag = wdev ?
6681 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6682 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6683 flags = &req->flags;
6684 mac_addr = req->mac_addr;
6685 mac_addr_mask = req->mac_addr_mask;
6686 } else {
6687 struct cfg80211_scan_request *req = request;
6688
6689 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6690 flags = &req->flags;
6691 mac_addr = req->mac_addr;
6692 mac_addr_mask = req->mac_addr_mask;
6693 }
6694
6695 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6696
6697 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6698 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6699 return -EOPNOTSUPP;
6700
6701 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6702 int err;
6703
6704 if (!(wiphy->features & randomness_flag) ||
6705 (wdev && wdev->current_bss))
6706 return -EOPNOTSUPP;
6707
6708 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6709 if (err)
6710 return err;
6711 }
6712
6713 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6714 !wiphy_ext_feature_isset(wiphy,
6715 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6716 return -EOPNOTSUPP;
6717
6718 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6719 !wiphy_ext_feature_isset(wiphy,
6720 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6721 return -EOPNOTSUPP;
6722
6723 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6724 !wiphy_ext_feature_isset(wiphy,
6725 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6726 return -EOPNOTSUPP;
6727
6728 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6729 !wiphy_ext_feature_isset(wiphy,
6730 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6731 return -EOPNOTSUPP;
6732
6733 return 0;
6734 }
6735
6736 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6737 {
6738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6739 struct wireless_dev *wdev = info->user_ptr[1];
6740 struct cfg80211_scan_request *request;
6741 struct nlattr *attr;
6742 struct wiphy *wiphy;
6743 int err, tmp, n_ssids = 0, n_channels, i;
6744 size_t ie_len;
6745
6746 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6747 return -EINVAL;
6748
6749 wiphy = &rdev->wiphy;
6750
6751 if (wdev->iftype == NL80211_IFTYPE_NAN)
6752 return -EOPNOTSUPP;
6753
6754 if (!rdev->ops->scan)
6755 return -EOPNOTSUPP;
6756
6757 if (rdev->scan_req || rdev->scan_msg) {
6758 err = -EBUSY;
6759 goto unlock;
6760 }
6761
6762 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6763 n_channels = validate_scan_freqs(
6764 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6765 if (!n_channels) {
6766 err = -EINVAL;
6767 goto unlock;
6768 }
6769 } else {
6770 n_channels = ieee80211_get_num_supported_channels(wiphy);
6771 }
6772
6773 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6774 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6775 n_ssids++;
6776
6777 if (n_ssids > wiphy->max_scan_ssids) {
6778 err = -EINVAL;
6779 goto unlock;
6780 }
6781
6782 if (info->attrs[NL80211_ATTR_IE])
6783 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6784 else
6785 ie_len = 0;
6786
6787 if (ie_len > wiphy->max_scan_ie_len) {
6788 err = -EINVAL;
6789 goto unlock;
6790 }
6791
6792 request = kzalloc(sizeof(*request)
6793 + sizeof(*request->ssids) * n_ssids
6794 + sizeof(*request->channels) * n_channels
6795 + ie_len, GFP_KERNEL);
6796 if (!request) {
6797 err = -ENOMEM;
6798 goto unlock;
6799 }
6800
6801 if (n_ssids)
6802 request->ssids = (void *)&request->channels[n_channels];
6803 request->n_ssids = n_ssids;
6804 if (ie_len) {
6805 if (n_ssids)
6806 request->ie = (void *)(request->ssids + n_ssids);
6807 else
6808 request->ie = (void *)(request->channels + n_channels);
6809 }
6810
6811 i = 0;
6812 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6813 /* user specified, bail out if channel not found */
6814 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6815 struct ieee80211_channel *chan;
6816
6817 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6818
6819 if (!chan) {
6820 err = -EINVAL;
6821 goto out_free;
6822 }
6823
6824 /* ignore disabled channels */
6825 if (chan->flags & IEEE80211_CHAN_DISABLED)
6826 continue;
6827
6828 request->channels[i] = chan;
6829 i++;
6830 }
6831 } else {
6832 enum nl80211_band band;
6833
6834 /* all channels */
6835 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6836 int j;
6837
6838 if (!wiphy->bands[band])
6839 continue;
6840 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6841 struct ieee80211_channel *chan;
6842
6843 chan = &wiphy->bands[band]->channels[j];
6844
6845 if (chan->flags & IEEE80211_CHAN_DISABLED)
6846 continue;
6847
6848 request->channels[i] = chan;
6849 i++;
6850 }
6851 }
6852 }
6853
6854 if (!i) {
6855 err = -EINVAL;
6856 goto out_free;
6857 }
6858
6859 request->n_channels = i;
6860
6861 wdev_lock(wdev);
6862 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6863 struct ieee80211_channel *chan;
6864
6865 if (request->n_channels != 1) {
6866 wdev_unlock(wdev);
6867 err = -EBUSY;
6868 goto out_free;
6869 }
6870
6871 chan = request->channels[0];
6872 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6873 wdev_unlock(wdev);
6874 err = -EBUSY;
6875 goto out_free;
6876 }
6877 }
6878 wdev_unlock(wdev);
6879
6880 i = 0;
6881 if (n_ssids) {
6882 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6883 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6884 err = -EINVAL;
6885 goto out_free;
6886 }
6887 request->ssids[i].ssid_len = nla_len(attr);
6888 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6889 i++;
6890 }
6891 }
6892
6893 if (info->attrs[NL80211_ATTR_IE]) {
6894 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6895 memcpy((void *)request->ie,
6896 nla_data(info->attrs[NL80211_ATTR_IE]),
6897 request->ie_len);
6898 }
6899
6900 for (i = 0; i < NUM_NL80211_BANDS; i++)
6901 if (wiphy->bands[i])
6902 request->rates[i] =
6903 (1 << wiphy->bands[i]->n_bitrates) - 1;
6904
6905 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6906 nla_for_each_nested(attr,
6907 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6908 tmp) {
6909 enum nl80211_band band = nla_type(attr);
6910
6911 if (band < 0 || band >= NUM_NL80211_BANDS) {
6912 err = -EINVAL;
6913 goto out_free;
6914 }
6915
6916 if (!wiphy->bands[band])
6917 continue;
6918
6919 err = ieee80211_get_ratemask(wiphy->bands[band],
6920 nla_data(attr),
6921 nla_len(attr),
6922 &request->rates[band]);
6923 if (err)
6924 goto out_free;
6925 }
6926 }
6927
6928 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6929 if (!wiphy_ext_feature_isset(wiphy,
6930 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6931 err = -EOPNOTSUPP;
6932 goto out_free;
6933 }
6934
6935 request->duration =
6936 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6937 request->duration_mandatory =
6938 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6939 }
6940
6941 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6942 false);
6943 if (err)
6944 goto out_free;
6945
6946 request->no_cck =
6947 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6948
6949 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6950 * BSSID to scan for. This was problematic because that same attribute
6951 * was already used for another purpose (local random MAC address). The
6952 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6953 * compatibility with older userspace components, also use the
6954 * NL80211_ATTR_MAC value here if it can be determined to be used for
6955 * the specific BSSID use case instead of the random MAC address
6956 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6957 */
6958 if (info->attrs[NL80211_ATTR_BSSID])
6959 memcpy(request->bssid,
6960 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6961 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6962 info->attrs[NL80211_ATTR_MAC])
6963 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6964 ETH_ALEN);
6965 else
6966 eth_broadcast_addr(request->bssid);
6967
6968 request->wdev = wdev;
6969 request->wiphy = &rdev->wiphy;
6970 request->scan_start = jiffies;
6971
6972 rdev->scan_req = request;
6973 err = rdev_scan(rdev, request);
6974
6975 if (!err) {
6976 nl80211_send_scan_start(rdev, wdev);
6977 if (wdev->netdev)
6978 dev_hold(wdev->netdev);
6979 } else {
6980 out_free:
6981 rdev->scan_req = NULL;
6982 kfree(request);
6983 }
6984
6985 unlock:
6986 return err;
6987 }
6988
6989 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6990 {
6991 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6992 struct wireless_dev *wdev = info->user_ptr[1];
6993
6994 if (!rdev->ops->abort_scan)
6995 return -EOPNOTSUPP;
6996
6997 if (rdev->scan_msg)
6998 return 0;
6999
7000 if (!rdev->scan_req)
7001 return -ENOENT;
7002
7003 rdev_abort_scan(rdev, wdev);
7004 return 0;
7005 }
7006
7007 static int
7008 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7009 struct cfg80211_sched_scan_request *request,
7010 struct nlattr **attrs)
7011 {
7012 int tmp, err, i = 0;
7013 struct nlattr *attr;
7014
7015 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7016 u32 interval;
7017
7018 /*
7019 * If scan plans are not specified,
7020 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7021 * case one scan plan will be set with the specified scan
7022 * interval and infinite number of iterations.
7023 */
7024 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7025 if (!interval)
7026 return -EINVAL;
7027
7028 request->scan_plans[0].interval =
7029 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7030 if (!request->scan_plans[0].interval)
7031 return -EINVAL;
7032
7033 if (request->scan_plans[0].interval >
7034 wiphy->max_sched_scan_plan_interval)
7035 request->scan_plans[0].interval =
7036 wiphy->max_sched_scan_plan_interval;
7037
7038 return 0;
7039 }
7040
7041 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7042 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7043
7044 if (WARN_ON(i >= n_plans))
7045 return -EINVAL;
7046
7047 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7048 attr, nl80211_plan_policy, NULL);
7049 if (err)
7050 return err;
7051
7052 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7053 return -EINVAL;
7054
7055 request->scan_plans[i].interval =
7056 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7057 if (!request->scan_plans[i].interval ||
7058 request->scan_plans[i].interval >
7059 wiphy->max_sched_scan_plan_interval)
7060 return -EINVAL;
7061
7062 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7063 request->scan_plans[i].iterations =
7064 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7065 if (!request->scan_plans[i].iterations ||
7066 (request->scan_plans[i].iterations >
7067 wiphy->max_sched_scan_plan_iterations))
7068 return -EINVAL;
7069 } else if (i < n_plans - 1) {
7070 /*
7071 * All scan plans but the last one must specify
7072 * a finite number of iterations
7073 */
7074 return -EINVAL;
7075 }
7076
7077 i++;
7078 }
7079
7080 /*
7081 * The last scan plan must not specify the number of
7082 * iterations, it is supposed to run infinitely
7083 */
7084 if (request->scan_plans[n_plans - 1].iterations)
7085 return -EINVAL;
7086
7087 return 0;
7088 }
7089
7090 static struct cfg80211_sched_scan_request *
7091 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7092 struct nlattr **attrs, int max_match_sets)
7093 {
7094 struct cfg80211_sched_scan_request *request;
7095 struct nlattr *attr;
7096 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7097 enum nl80211_band band;
7098 size_t ie_len;
7099 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7100 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7101
7102 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7103 return ERR_PTR(-EINVAL);
7104
7105 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7106 n_channels = validate_scan_freqs(
7107 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7108 if (!n_channels)
7109 return ERR_PTR(-EINVAL);
7110 } else {
7111 n_channels = ieee80211_get_num_supported_channels(wiphy);
7112 }
7113
7114 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7115 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7116 tmp)
7117 n_ssids++;
7118
7119 if (n_ssids > wiphy->max_sched_scan_ssids)
7120 return ERR_PTR(-EINVAL);
7121
7122 /*
7123 * First, count the number of 'real' matchsets. Due to an issue with
7124 * the old implementation, matchsets containing only the RSSI attribute
7125 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7126 * RSSI for all matchsets, rather than their own matchset for reporting
7127 * all APs with a strong RSSI. This is needed to be compatible with
7128 * older userspace that treated a matchset with only the RSSI as the
7129 * global RSSI for all other matchsets - if there are other matchsets.
7130 */
7131 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7132 nla_for_each_nested(attr,
7133 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7134 tmp) {
7135 struct nlattr *rssi;
7136
7137 err = nla_parse_nested(tb,
7138 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7139 attr, nl80211_match_policy,
7140 NULL);
7141 if (err)
7142 return ERR_PTR(err);
7143
7144 /* SSID and BSSID are mutually exclusive */
7145 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7146 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7147 return ERR_PTR(-EINVAL);
7148
7149 /* add other standalone attributes here */
7150 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7151 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7152 n_match_sets++;
7153 continue;
7154 }
7155 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7156 if (rssi)
7157 default_match_rssi = nla_get_s32(rssi);
7158 }
7159 }
7160
7161 /* However, if there's no other matchset, add the RSSI one */
7162 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7163 n_match_sets = 1;
7164
7165 if (n_match_sets > max_match_sets)
7166 return ERR_PTR(-EINVAL);
7167
7168 if (attrs[NL80211_ATTR_IE])
7169 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7170 else
7171 ie_len = 0;
7172
7173 if (ie_len > wiphy->max_sched_scan_ie_len)
7174 return ERR_PTR(-EINVAL);
7175
7176 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7177 /*
7178 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7179 * each scan plan already specifies its own interval
7180 */
7181 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7182 return ERR_PTR(-EINVAL);
7183
7184 nla_for_each_nested(attr,
7185 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7186 n_plans++;
7187 } else {
7188 /*
7189 * The scan interval attribute is kept for backward
7190 * compatibility. If no scan plans are specified and sched scan
7191 * interval is specified, one scan plan will be set with this
7192 * scan interval and infinite number of iterations.
7193 */
7194 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7195 return ERR_PTR(-EINVAL);
7196
7197 n_plans = 1;
7198 }
7199
7200 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7201 return ERR_PTR(-EINVAL);
7202
7203 if (!wiphy_ext_feature_isset(
7204 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7205 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7206 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7207 return ERR_PTR(-EINVAL);
7208
7209 request = kzalloc(sizeof(*request)
7210 + sizeof(*request->ssids) * n_ssids
7211 + sizeof(*request->match_sets) * n_match_sets
7212 + sizeof(*request->scan_plans) * n_plans
7213 + sizeof(*request->channels) * n_channels
7214 + ie_len, GFP_KERNEL);
7215 if (!request)
7216 return ERR_PTR(-ENOMEM);
7217
7218 if (n_ssids)
7219 request->ssids = (void *)&request->channels[n_channels];
7220 request->n_ssids = n_ssids;
7221 if (ie_len) {
7222 if (n_ssids)
7223 request->ie = (void *)(request->ssids + n_ssids);
7224 else
7225 request->ie = (void *)(request->channels + n_channels);
7226 }
7227
7228 if (n_match_sets) {
7229 if (request->ie)
7230 request->match_sets = (void *)(request->ie + ie_len);
7231 else if (n_ssids)
7232 request->match_sets =
7233 (void *)(request->ssids + n_ssids);
7234 else
7235 request->match_sets =
7236 (void *)(request->channels + n_channels);
7237 }
7238 request->n_match_sets = n_match_sets;
7239
7240 if (n_match_sets)
7241 request->scan_plans = (void *)(request->match_sets +
7242 n_match_sets);
7243 else if (request->ie)
7244 request->scan_plans = (void *)(request->ie + ie_len);
7245 else if (n_ssids)
7246 request->scan_plans = (void *)(request->ssids + n_ssids);
7247 else
7248 request->scan_plans = (void *)(request->channels + n_channels);
7249
7250 request->n_scan_plans = n_plans;
7251
7252 i = 0;
7253 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7254 /* user specified, bail out if channel not found */
7255 nla_for_each_nested(attr,
7256 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7257 tmp) {
7258 struct ieee80211_channel *chan;
7259
7260 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7261
7262 if (!chan) {
7263 err = -EINVAL;
7264 goto out_free;
7265 }
7266
7267 /* ignore disabled channels */
7268 if (chan->flags & IEEE80211_CHAN_DISABLED)
7269 continue;
7270
7271 request->channels[i] = chan;
7272 i++;
7273 }
7274 } else {
7275 /* all channels */
7276 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7277 int j;
7278
7279 if (!wiphy->bands[band])
7280 continue;
7281 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7282 struct ieee80211_channel *chan;
7283
7284 chan = &wiphy->bands[band]->channels[j];
7285
7286 if (chan->flags & IEEE80211_CHAN_DISABLED)
7287 continue;
7288
7289 request->channels[i] = chan;
7290 i++;
7291 }
7292 }
7293 }
7294
7295 if (!i) {
7296 err = -EINVAL;
7297 goto out_free;
7298 }
7299
7300 request->n_channels = i;
7301
7302 i = 0;
7303 if (n_ssids) {
7304 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7305 tmp) {
7306 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7307 err = -EINVAL;
7308 goto out_free;
7309 }
7310 request->ssids[i].ssid_len = nla_len(attr);
7311 memcpy(request->ssids[i].ssid, nla_data(attr),
7312 nla_len(attr));
7313 i++;
7314 }
7315 }
7316
7317 i = 0;
7318 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7319 nla_for_each_nested(attr,
7320 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7321 tmp) {
7322 struct nlattr *ssid, *bssid, *rssi;
7323
7324 err = nla_parse_nested(tb,
7325 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7326 attr, nl80211_match_policy,
7327 NULL);
7328 if (err)
7329 goto out_free;
7330 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7331 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7332 if (ssid || bssid) {
7333 if (WARN_ON(i >= n_match_sets)) {
7334 /* this indicates a programming error,
7335 * the loop above should have verified
7336 * things properly
7337 */
7338 err = -EINVAL;
7339 goto out_free;
7340 }
7341
7342 if (ssid) {
7343 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7344 err = -EINVAL;
7345 goto out_free;
7346 }
7347 memcpy(request->match_sets[i].ssid.ssid,
7348 nla_data(ssid), nla_len(ssid));
7349 request->match_sets[i].ssid.ssid_len =
7350 nla_len(ssid);
7351 }
7352 if (bssid) {
7353 if (nla_len(bssid) != ETH_ALEN) {
7354 err = -EINVAL;
7355 goto out_free;
7356 }
7357 memcpy(request->match_sets[i].bssid,
7358 nla_data(bssid), ETH_ALEN);
7359 }
7360
7361 /* special attribute - old implementation w/a */
7362 request->match_sets[i].rssi_thold =
7363 default_match_rssi;
7364 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7365 if (rssi)
7366 request->match_sets[i].rssi_thold =
7367 nla_get_s32(rssi);
7368 }
7369 i++;
7370 }
7371
7372 /* there was no other matchset, so the RSSI one is alone */
7373 if (i == 0 && n_match_sets)
7374 request->match_sets[0].rssi_thold = default_match_rssi;
7375
7376 request->min_rssi_thold = INT_MAX;
7377 for (i = 0; i < n_match_sets; i++)
7378 request->min_rssi_thold =
7379 min(request->match_sets[i].rssi_thold,
7380 request->min_rssi_thold);
7381 } else {
7382 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7383 }
7384
7385 if (ie_len) {
7386 request->ie_len = ie_len;
7387 memcpy((void *)request->ie,
7388 nla_data(attrs[NL80211_ATTR_IE]),
7389 request->ie_len);
7390 }
7391
7392 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7393 if (err)
7394 goto out_free;
7395
7396 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7397 request->delay =
7398 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7399
7400 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7401 request->relative_rssi = nla_get_s8(
7402 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7403 request->relative_rssi_set = true;
7404 }
7405
7406 if (request->relative_rssi_set &&
7407 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7408 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7409
7410 rssi_adjust = nla_data(
7411 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7412 request->rssi_adjust.band = rssi_adjust->band;
7413 request->rssi_adjust.delta = rssi_adjust->delta;
7414 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7415 err = -EINVAL;
7416 goto out_free;
7417 }
7418 }
7419
7420 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7421 if (err)
7422 goto out_free;
7423
7424 request->scan_start = jiffies;
7425
7426 return request;
7427
7428 out_free:
7429 kfree(request);
7430 return ERR_PTR(err);
7431 }
7432
7433 static int nl80211_start_sched_scan(struct sk_buff *skb,
7434 struct genl_info *info)
7435 {
7436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7437 struct net_device *dev = info->user_ptr[1];
7438 struct wireless_dev *wdev = dev->ieee80211_ptr;
7439 struct cfg80211_sched_scan_request *sched_scan_req;
7440 bool want_multi;
7441 int err;
7442
7443 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7444 return -EOPNOTSUPP;
7445
7446 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7447 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7448 if (err)
7449 return err;
7450
7451 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7452 info->attrs,
7453 rdev->wiphy.max_match_sets);
7454
7455 err = PTR_ERR_OR_ZERO(sched_scan_req);
7456 if (err)
7457 goto out_err;
7458
7459 /* leave request id zero for legacy request
7460 * or if driver does not support multi-scheduled scan
7461 */
7462 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7463 while (!sched_scan_req->reqid)
7464 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7465 }
7466
7467 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7468 if (err)
7469 goto out_free;
7470
7471 sched_scan_req->dev = dev;
7472 sched_scan_req->wiphy = &rdev->wiphy;
7473
7474 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7475 sched_scan_req->owner_nlportid = info->snd_portid;
7476
7477 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7478
7479 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7480 return 0;
7481
7482 out_free:
7483 kfree(sched_scan_req);
7484 out_err:
7485 return err;
7486 }
7487
7488 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7489 struct genl_info *info)
7490 {
7491 struct cfg80211_sched_scan_request *req;
7492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7493 u64 cookie;
7494
7495 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7496 return -EOPNOTSUPP;
7497
7498 if (info->attrs[NL80211_ATTR_COOKIE]) {
7499 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7500 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7501 }
7502
7503 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7504 struct cfg80211_sched_scan_request,
7505 list);
7506 if (!req || req->reqid ||
7507 (req->owner_nlportid &&
7508 req->owner_nlportid != info->snd_portid))
7509 return -ENOENT;
7510
7511 return cfg80211_stop_sched_scan_req(rdev, req, false);
7512 }
7513
7514 static int nl80211_start_radar_detection(struct sk_buff *skb,
7515 struct genl_info *info)
7516 {
7517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7518 struct net_device *dev = info->user_ptr[1];
7519 struct wireless_dev *wdev = dev->ieee80211_ptr;
7520 struct cfg80211_chan_def chandef;
7521 enum nl80211_dfs_regions dfs_region;
7522 unsigned int cac_time_ms;
7523 int err;
7524
7525 dfs_region = reg_get_dfs_region(wdev->wiphy);
7526 if (dfs_region == NL80211_DFS_UNSET)
7527 return -EINVAL;
7528
7529 err = nl80211_parse_chandef(rdev, info, &chandef);
7530 if (err)
7531 return err;
7532
7533 if (netif_carrier_ok(dev))
7534 return -EBUSY;
7535
7536 if (wdev->cac_started)
7537 return -EBUSY;
7538
7539 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7540 wdev->iftype);
7541 if (err < 0)
7542 return err;
7543
7544 if (err == 0)
7545 return -EINVAL;
7546
7547 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7548 return -EINVAL;
7549
7550 if (!rdev->ops->start_radar_detection)
7551 return -EOPNOTSUPP;
7552
7553 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7554 if (WARN_ON(!cac_time_ms))
7555 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7556
7557 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7558 if (!err) {
7559 wdev->chandef = chandef;
7560 wdev->cac_started = true;
7561 wdev->cac_start_time = jiffies;
7562 wdev->cac_time_ms = cac_time_ms;
7563 }
7564 return err;
7565 }
7566
7567 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7568 {
7569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7570 struct net_device *dev = info->user_ptr[1];
7571 struct wireless_dev *wdev = dev->ieee80211_ptr;
7572 struct cfg80211_csa_settings params;
7573 /* csa_attrs is defined static to avoid waste of stack size - this
7574 * function is called under RTNL lock, so this should not be a problem.
7575 */
7576 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7577 int err;
7578 bool need_new_beacon = false;
7579 bool need_handle_dfs_flag = true;
7580 int len, i;
7581 u32 cs_count;
7582
7583 if (!rdev->ops->channel_switch ||
7584 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7585 return -EOPNOTSUPP;
7586
7587 switch (dev->ieee80211_ptr->iftype) {
7588 case NL80211_IFTYPE_AP:
7589 case NL80211_IFTYPE_P2P_GO:
7590 need_new_beacon = true;
7591 /* For all modes except AP the handle_dfs flag needs to be
7592 * supplied to tell the kernel that userspace will handle radar
7593 * events when they happen. Otherwise a switch to a channel
7594 * requiring DFS will be rejected.
7595 */
7596 need_handle_dfs_flag = false;
7597
7598 /* useless if AP is not running */
7599 if (!wdev->beacon_interval)
7600 return -ENOTCONN;
7601 break;
7602 case NL80211_IFTYPE_ADHOC:
7603 if (!wdev->ssid_len)
7604 return -ENOTCONN;
7605 break;
7606 case NL80211_IFTYPE_MESH_POINT:
7607 if (!wdev->mesh_id_len)
7608 return -ENOTCONN;
7609 break;
7610 default:
7611 return -EOPNOTSUPP;
7612 }
7613
7614 memset(&params, 0, sizeof(params));
7615
7616 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7617 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7618 return -EINVAL;
7619
7620 /* only important for AP, IBSS and mesh create IEs internally */
7621 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7622 return -EINVAL;
7623
7624 /* Even though the attribute is u32, the specification says
7625 * u8, so let's make sure we don't overflow.
7626 */
7627 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7628 if (cs_count > 255)
7629 return -EINVAL;
7630
7631 params.count = cs_count;
7632
7633 if (!need_new_beacon)
7634 goto skip_beacons;
7635
7636 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7637 if (err)
7638 return err;
7639
7640 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7641 info->attrs[NL80211_ATTR_CSA_IES],
7642 nl80211_policy, info->extack);
7643 if (err)
7644 return err;
7645
7646 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7647 if (err)
7648 return err;
7649
7650 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7651 return -EINVAL;
7652
7653 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7654 if (!len || (len % sizeof(u16)))
7655 return -EINVAL;
7656
7657 params.n_counter_offsets_beacon = len / sizeof(u16);
7658 if (rdev->wiphy.max_num_csa_counters &&
7659 (params.n_counter_offsets_beacon >
7660 rdev->wiphy.max_num_csa_counters))
7661 return -EINVAL;
7662
7663 params.counter_offsets_beacon =
7664 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7665
7666 /* sanity checks - counters should fit and be the same */
7667 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7668 u16 offset = params.counter_offsets_beacon[i];
7669
7670 if (offset >= params.beacon_csa.tail_len)
7671 return -EINVAL;
7672
7673 if (params.beacon_csa.tail[offset] != params.count)
7674 return -EINVAL;
7675 }
7676
7677 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7678 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7679 if (!len || (len % sizeof(u16)))
7680 return -EINVAL;
7681
7682 params.n_counter_offsets_presp = len / sizeof(u16);
7683 if (rdev->wiphy.max_num_csa_counters &&
7684 (params.n_counter_offsets_presp >
7685 rdev->wiphy.max_num_csa_counters))
7686 return -EINVAL;
7687
7688 params.counter_offsets_presp =
7689 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7690
7691 /* sanity checks - counters should fit and be the same */
7692 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7693 u16 offset = params.counter_offsets_presp[i];
7694
7695 if (offset >= params.beacon_csa.probe_resp_len)
7696 return -EINVAL;
7697
7698 if (params.beacon_csa.probe_resp[offset] !=
7699 params.count)
7700 return -EINVAL;
7701 }
7702 }
7703
7704 skip_beacons:
7705 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7706 if (err)
7707 return err;
7708
7709 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7710 wdev->iftype))
7711 return -EINVAL;
7712
7713 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7714 &params.chandef,
7715 wdev->iftype);
7716 if (err < 0)
7717 return err;
7718
7719 if (err > 0) {
7720 params.radar_required = true;
7721 if (need_handle_dfs_flag &&
7722 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7723 return -EINVAL;
7724 }
7725 }
7726
7727 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7728 params.block_tx = true;
7729
7730 wdev_lock(wdev);
7731 err = rdev_channel_switch(rdev, dev, &params);
7732 wdev_unlock(wdev);
7733
7734 return err;
7735 }
7736
7737 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7738 u32 seq, int flags,
7739 struct cfg80211_registered_device *rdev,
7740 struct wireless_dev *wdev,
7741 struct cfg80211_internal_bss *intbss)
7742 {
7743 struct cfg80211_bss *res = &intbss->pub;
7744 const struct cfg80211_bss_ies *ies;
7745 void *hdr;
7746 struct nlattr *bss;
7747
7748 ASSERT_WDEV_LOCK(wdev);
7749
7750 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7751 NL80211_CMD_NEW_SCAN_RESULTS);
7752 if (!hdr)
7753 return -1;
7754
7755 genl_dump_check_consistent(cb, hdr);
7756
7757 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7758 goto nla_put_failure;
7759 if (wdev->netdev &&
7760 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7761 goto nla_put_failure;
7762 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7763 NL80211_ATTR_PAD))
7764 goto nla_put_failure;
7765
7766 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7767 if (!bss)
7768 goto nla_put_failure;
7769 if ((!is_zero_ether_addr(res->bssid) &&
7770 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7771 goto nla_put_failure;
7772
7773 rcu_read_lock();
7774 /* indicate whether we have probe response data or not */
7775 if (rcu_access_pointer(res->proberesp_ies) &&
7776 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7777 goto fail_unlock_rcu;
7778
7779 /* this pointer prefers to be pointed to probe response data
7780 * but is always valid
7781 */
7782 ies = rcu_dereference(res->ies);
7783 if (ies) {
7784 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7785 NL80211_BSS_PAD))
7786 goto fail_unlock_rcu;
7787 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7788 ies->len, ies->data))
7789 goto fail_unlock_rcu;
7790 }
7791
7792 /* and this pointer is always (unless driver didn't know) beacon data */
7793 ies = rcu_dereference(res->beacon_ies);
7794 if (ies && ies->from_beacon) {
7795 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7796 NL80211_BSS_PAD))
7797 goto fail_unlock_rcu;
7798 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7799 ies->len, ies->data))
7800 goto fail_unlock_rcu;
7801 }
7802 rcu_read_unlock();
7803
7804 if (res->beacon_interval &&
7805 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7806 goto nla_put_failure;
7807 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7808 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7809 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7810 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7811 jiffies_to_msecs(jiffies - intbss->ts)))
7812 goto nla_put_failure;
7813
7814 if (intbss->parent_tsf &&
7815 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7816 intbss->parent_tsf, NL80211_BSS_PAD) ||
7817 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7818 intbss->parent_bssid)))
7819 goto nla_put_failure;
7820
7821 if (intbss->ts_boottime &&
7822 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7823 intbss->ts_boottime, NL80211_BSS_PAD))
7824 goto nla_put_failure;
7825
7826 switch (rdev->wiphy.signal_type) {
7827 case CFG80211_SIGNAL_TYPE_MBM:
7828 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7829 goto nla_put_failure;
7830 break;
7831 case CFG80211_SIGNAL_TYPE_UNSPEC:
7832 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7833 goto nla_put_failure;
7834 break;
7835 default:
7836 break;
7837 }
7838
7839 switch (wdev->iftype) {
7840 case NL80211_IFTYPE_P2P_CLIENT:
7841 case NL80211_IFTYPE_STATION:
7842 if (intbss == wdev->current_bss &&
7843 nla_put_u32(msg, NL80211_BSS_STATUS,
7844 NL80211_BSS_STATUS_ASSOCIATED))
7845 goto nla_put_failure;
7846 break;
7847 case NL80211_IFTYPE_ADHOC:
7848 if (intbss == wdev->current_bss &&
7849 nla_put_u32(msg, NL80211_BSS_STATUS,
7850 NL80211_BSS_STATUS_IBSS_JOINED))
7851 goto nla_put_failure;
7852 break;
7853 default:
7854 break;
7855 }
7856
7857 nla_nest_end(msg, bss);
7858
7859 genlmsg_end(msg, hdr);
7860 return 0;
7861
7862 fail_unlock_rcu:
7863 rcu_read_unlock();
7864 nla_put_failure:
7865 genlmsg_cancel(msg, hdr);
7866 return -EMSGSIZE;
7867 }
7868
7869 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7870 {
7871 struct cfg80211_registered_device *rdev;
7872 struct cfg80211_internal_bss *scan;
7873 struct wireless_dev *wdev;
7874 int start = cb->args[2], idx = 0;
7875 int err;
7876
7877 rtnl_lock();
7878 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7879 if (err) {
7880 rtnl_unlock();
7881 return err;
7882 }
7883
7884 wdev_lock(wdev);
7885 spin_lock_bh(&rdev->bss_lock);
7886 cfg80211_bss_expire(rdev);
7887
7888 cb->seq = rdev->bss_generation;
7889
7890 list_for_each_entry(scan, &rdev->bss_list, list) {
7891 if (++idx <= start)
7892 continue;
7893 if (nl80211_send_bss(skb, cb,
7894 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7895 rdev, wdev, scan) < 0) {
7896 idx--;
7897 break;
7898 }
7899 }
7900
7901 spin_unlock_bh(&rdev->bss_lock);
7902 wdev_unlock(wdev);
7903
7904 cb->args[2] = idx;
7905 rtnl_unlock();
7906
7907 return skb->len;
7908 }
7909
7910 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7911 int flags, struct net_device *dev,
7912 bool allow_radio_stats,
7913 struct survey_info *survey)
7914 {
7915 void *hdr;
7916 struct nlattr *infoattr;
7917
7918 /* skip radio stats if userspace didn't request them */
7919 if (!survey->channel && !allow_radio_stats)
7920 return 0;
7921
7922 hdr = nl80211hdr_put(msg, portid, seq, flags,
7923 NL80211_CMD_NEW_SURVEY_RESULTS);
7924 if (!hdr)
7925 return -ENOMEM;
7926
7927 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7928 goto nla_put_failure;
7929
7930 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7931 if (!infoattr)
7932 goto nla_put_failure;
7933
7934 if (survey->channel &&
7935 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7936 survey->channel->center_freq))
7937 goto nla_put_failure;
7938
7939 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7940 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7941 goto nla_put_failure;
7942 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7943 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7944 goto nla_put_failure;
7945 if ((survey->filled & SURVEY_INFO_TIME) &&
7946 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7947 survey->time, NL80211_SURVEY_INFO_PAD))
7948 goto nla_put_failure;
7949 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7950 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7951 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7952 goto nla_put_failure;
7953 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7954 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7955 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7956 goto nla_put_failure;
7957 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7958 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7959 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7960 goto nla_put_failure;
7961 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7962 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7963 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7964 goto nla_put_failure;
7965 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7966 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7967 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7968 goto nla_put_failure;
7969
7970 nla_nest_end(msg, infoattr);
7971
7972 genlmsg_end(msg, hdr);
7973 return 0;
7974
7975 nla_put_failure:
7976 genlmsg_cancel(msg, hdr);
7977 return -EMSGSIZE;
7978 }
7979
7980 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7981 {
7982 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7983 struct survey_info survey;
7984 struct cfg80211_registered_device *rdev;
7985 struct wireless_dev *wdev;
7986 int survey_idx = cb->args[2];
7987 int res;
7988 bool radio_stats;
7989
7990 rtnl_lock();
7991 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7992 if (res)
7993 goto out_err;
7994
7995 /* prepare_wdev_dump parsed the attributes */
7996 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7997
7998 if (!wdev->netdev) {
7999 res = -EINVAL;
8000 goto out_err;
8001 }
8002
8003 if (!rdev->ops->dump_survey) {
8004 res = -EOPNOTSUPP;
8005 goto out_err;
8006 }
8007
8008 while (1) {
8009 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8010 if (res == -ENOENT)
8011 break;
8012 if (res)
8013 goto out_err;
8014
8015 /* don't send disabled channels, but do send non-channel data */
8016 if (survey.channel &&
8017 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8018 survey_idx++;
8019 continue;
8020 }
8021
8022 if (nl80211_send_survey(skb,
8023 NETLINK_CB(cb->skb).portid,
8024 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8025 wdev->netdev, radio_stats, &survey) < 0)
8026 goto out;
8027 survey_idx++;
8028 }
8029
8030 out:
8031 cb->args[2] = survey_idx;
8032 res = skb->len;
8033 out_err:
8034 rtnl_unlock();
8035 return res;
8036 }
8037
8038 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8039 {
8040 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8041 NL80211_WPA_VERSION_2));
8042 }
8043
8044 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8045 {
8046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8047 struct net_device *dev = info->user_ptr[1];
8048 struct ieee80211_channel *chan;
8049 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8050 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8051 enum nl80211_auth_type auth_type;
8052 struct key_parse key;
8053 bool local_state_change;
8054
8055 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8056 return -EINVAL;
8057
8058 if (!info->attrs[NL80211_ATTR_MAC])
8059 return -EINVAL;
8060
8061 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8062 return -EINVAL;
8063
8064 if (!info->attrs[NL80211_ATTR_SSID])
8065 return -EINVAL;
8066
8067 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8068 return -EINVAL;
8069
8070 err = nl80211_parse_key(info, &key);
8071 if (err)
8072 return err;
8073
8074 if (key.idx >= 0) {
8075 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8076 return -EINVAL;
8077 if (!key.p.key || !key.p.key_len)
8078 return -EINVAL;
8079 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8080 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8081 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8082 key.p.key_len != WLAN_KEY_LEN_WEP104))
8083 return -EINVAL;
8084 if (key.idx > 3)
8085 return -EINVAL;
8086 } else {
8087 key.p.key_len = 0;
8088 key.p.key = NULL;
8089 }
8090
8091 if (key.idx >= 0) {
8092 int i;
8093 bool ok = false;
8094
8095 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8096 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8097 ok = true;
8098 break;
8099 }
8100 }
8101 if (!ok)
8102 return -EINVAL;
8103 }
8104
8105 if (!rdev->ops->auth)
8106 return -EOPNOTSUPP;
8107
8108 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8109 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8110 return -EOPNOTSUPP;
8111
8112 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8113 chan = nl80211_get_valid_chan(&rdev->wiphy,
8114 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8115 if (!chan)
8116 return -EINVAL;
8117
8118 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8119 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8120
8121 if (info->attrs[NL80211_ATTR_IE]) {
8122 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8123 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8124 }
8125
8126 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8127 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8128 return -EINVAL;
8129
8130 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8131 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8132 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8133 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8134 !info->attrs[NL80211_ATTR_AUTH_DATA])
8135 return -EINVAL;
8136
8137 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8138 if (auth_type != NL80211_AUTHTYPE_SAE &&
8139 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8140 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8141 auth_type != NL80211_AUTHTYPE_FILS_PK)
8142 return -EINVAL;
8143 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8144 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8145 /* need to include at least Auth Transaction and Status Code */
8146 if (auth_data_len < 4)
8147 return -EINVAL;
8148 }
8149
8150 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8151
8152 /*
8153 * Since we no longer track auth state, ignore
8154 * requests to only change local state.
8155 */
8156 if (local_state_change)
8157 return 0;
8158
8159 wdev_lock(dev->ieee80211_ptr);
8160 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8161 ssid, ssid_len, ie, ie_len,
8162 key.p.key, key.p.key_len, key.idx,
8163 auth_data, auth_data_len);
8164 wdev_unlock(dev->ieee80211_ptr);
8165 return err;
8166 }
8167
8168 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8169 struct genl_info *info,
8170 struct cfg80211_crypto_settings *settings,
8171 int cipher_limit)
8172 {
8173 memset(settings, 0, sizeof(*settings));
8174
8175 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8176
8177 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8178 u16 proto;
8179
8180 proto = nla_get_u16(
8181 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8182 settings->control_port_ethertype = cpu_to_be16(proto);
8183 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8184 proto != ETH_P_PAE)
8185 return -EINVAL;
8186 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8187 settings->control_port_no_encrypt = true;
8188 } else
8189 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8190
8191 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8192 void *data;
8193 int len, i;
8194
8195 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8196 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8197 settings->n_ciphers_pairwise = len / sizeof(u32);
8198
8199 if (len % sizeof(u32))
8200 return -EINVAL;
8201
8202 if (settings->n_ciphers_pairwise > cipher_limit)
8203 return -EINVAL;
8204
8205 memcpy(settings->ciphers_pairwise, data, len);
8206
8207 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8208 if (!cfg80211_supported_cipher_suite(
8209 &rdev->wiphy,
8210 settings->ciphers_pairwise[i]))
8211 return -EINVAL;
8212 }
8213
8214 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8215 settings->cipher_group =
8216 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8217 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8218 settings->cipher_group))
8219 return -EINVAL;
8220 }
8221
8222 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8223 settings->wpa_versions =
8224 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8225 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8226 return -EINVAL;
8227 }
8228
8229 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8230 void *data;
8231 int len;
8232
8233 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8234 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8235 settings->n_akm_suites = len / sizeof(u32);
8236
8237 if (len % sizeof(u32))
8238 return -EINVAL;
8239
8240 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8241 return -EINVAL;
8242
8243 memcpy(settings->akm_suites, data, len);
8244 }
8245
8246 if (info->attrs[NL80211_ATTR_PMK]) {
8247 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8248 return -EINVAL;
8249 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8250 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8251 return -EINVAL;
8252 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8253 }
8254
8255 return 0;
8256 }
8257
8258 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8259 {
8260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8261 struct net_device *dev = info->user_ptr[1];
8262 struct ieee80211_channel *chan;
8263 struct cfg80211_assoc_request req = {};
8264 const u8 *bssid, *ssid;
8265 int err, ssid_len = 0;
8266
8267 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8268 return -EINVAL;
8269
8270 if (!info->attrs[NL80211_ATTR_MAC] ||
8271 !info->attrs[NL80211_ATTR_SSID] ||
8272 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8273 return -EINVAL;
8274
8275 if (!rdev->ops->assoc)
8276 return -EOPNOTSUPP;
8277
8278 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8279 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8280 return -EOPNOTSUPP;
8281
8282 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8283
8284 chan = nl80211_get_valid_chan(&rdev->wiphy,
8285 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8286 if (!chan)
8287 return -EINVAL;
8288
8289 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8290 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8291
8292 if (info->attrs[NL80211_ATTR_IE]) {
8293 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8294 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8295 }
8296
8297 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8298 enum nl80211_mfp mfp =
8299 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8300 if (mfp == NL80211_MFP_REQUIRED)
8301 req.use_mfp = true;
8302 else if (mfp != NL80211_MFP_NO)
8303 return -EINVAL;
8304 }
8305
8306 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8307 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8308
8309 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8310 req.flags |= ASSOC_REQ_DISABLE_HT;
8311
8312 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8313 memcpy(&req.ht_capa_mask,
8314 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8315 sizeof(req.ht_capa_mask));
8316
8317 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8318 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8319 return -EINVAL;
8320 memcpy(&req.ht_capa,
8321 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8322 sizeof(req.ht_capa));
8323 }
8324
8325 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8326 req.flags |= ASSOC_REQ_DISABLE_VHT;
8327
8328 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8329 memcpy(&req.vht_capa_mask,
8330 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8331 sizeof(req.vht_capa_mask));
8332
8333 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8334 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8335 return -EINVAL;
8336 memcpy(&req.vht_capa,
8337 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8338 sizeof(req.vht_capa));
8339 }
8340
8341 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8342 if (!((rdev->wiphy.features &
8343 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8344 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8345 !wiphy_ext_feature_isset(&rdev->wiphy,
8346 NL80211_EXT_FEATURE_RRM))
8347 return -EINVAL;
8348 req.flags |= ASSOC_REQ_USE_RRM;
8349 }
8350
8351 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8352 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8353 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8354 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8355 return -EINVAL;
8356 req.fils_nonces =
8357 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8358 }
8359
8360 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8361 if (!err) {
8362 wdev_lock(dev->ieee80211_ptr);
8363
8364 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8365 ssid, ssid_len, &req);
8366
8367 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8368 dev->ieee80211_ptr->conn_owner_nlportid =
8369 info->snd_portid;
8370 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8371 bssid, ETH_ALEN);
8372 }
8373
8374 wdev_unlock(dev->ieee80211_ptr);
8375 }
8376
8377 return err;
8378 }
8379
8380 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8381 {
8382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8383 struct net_device *dev = info->user_ptr[1];
8384 const u8 *ie = NULL, *bssid;
8385 int ie_len = 0, err;
8386 u16 reason_code;
8387 bool local_state_change;
8388
8389 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8390 return -EINVAL;
8391
8392 if (!info->attrs[NL80211_ATTR_MAC])
8393 return -EINVAL;
8394
8395 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8396 return -EINVAL;
8397
8398 if (!rdev->ops->deauth)
8399 return -EOPNOTSUPP;
8400
8401 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8402 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8403 return -EOPNOTSUPP;
8404
8405 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8406
8407 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8408 if (reason_code == 0) {
8409 /* Reason Code 0 is reserved */
8410 return -EINVAL;
8411 }
8412
8413 if (info->attrs[NL80211_ATTR_IE]) {
8414 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8415 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8416 }
8417
8418 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8419
8420 wdev_lock(dev->ieee80211_ptr);
8421 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8422 local_state_change);
8423 wdev_unlock(dev->ieee80211_ptr);
8424 return err;
8425 }
8426
8427 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8428 {
8429 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8430 struct net_device *dev = info->user_ptr[1];
8431 const u8 *ie = NULL, *bssid;
8432 int ie_len = 0, err;
8433 u16 reason_code;
8434 bool local_state_change;
8435
8436 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8437 return -EINVAL;
8438
8439 if (!info->attrs[NL80211_ATTR_MAC])
8440 return -EINVAL;
8441
8442 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8443 return -EINVAL;
8444
8445 if (!rdev->ops->disassoc)
8446 return -EOPNOTSUPP;
8447
8448 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8449 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8450 return -EOPNOTSUPP;
8451
8452 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8453
8454 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8455 if (reason_code == 0) {
8456 /* Reason Code 0 is reserved */
8457 return -EINVAL;
8458 }
8459
8460 if (info->attrs[NL80211_ATTR_IE]) {
8461 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8462 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8463 }
8464
8465 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8466
8467 wdev_lock(dev->ieee80211_ptr);
8468 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8469 local_state_change);
8470 wdev_unlock(dev->ieee80211_ptr);
8471 return err;
8472 }
8473
8474 static bool
8475 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8476 int mcast_rate[NUM_NL80211_BANDS],
8477 int rateval)
8478 {
8479 struct wiphy *wiphy = &rdev->wiphy;
8480 bool found = false;
8481 int band, i;
8482
8483 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8484 struct ieee80211_supported_band *sband;
8485
8486 sband = wiphy->bands[band];
8487 if (!sband)
8488 continue;
8489
8490 for (i = 0; i < sband->n_bitrates; i++) {
8491 if (sband->bitrates[i].bitrate == rateval) {
8492 mcast_rate[band] = i + 1;
8493 found = true;
8494 break;
8495 }
8496 }
8497 }
8498
8499 return found;
8500 }
8501
8502 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8503 {
8504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8505 struct net_device *dev = info->user_ptr[1];
8506 struct cfg80211_ibss_params ibss;
8507 struct wiphy *wiphy;
8508 struct cfg80211_cached_keys *connkeys = NULL;
8509 int err;
8510
8511 memset(&ibss, 0, sizeof(ibss));
8512
8513 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8514 return -EINVAL;
8515
8516 if (!info->attrs[NL80211_ATTR_SSID] ||
8517 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8518 return -EINVAL;
8519
8520 ibss.beacon_interval = 100;
8521
8522 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8523 ibss.beacon_interval =
8524 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8525
8526 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8527 ibss.beacon_interval);
8528 if (err)
8529 return err;
8530
8531 if (!rdev->ops->join_ibss)
8532 return -EOPNOTSUPP;
8533
8534 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8535 return -EOPNOTSUPP;
8536
8537 wiphy = &rdev->wiphy;
8538
8539 if (info->attrs[NL80211_ATTR_MAC]) {
8540 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8541
8542 if (!is_valid_ether_addr(ibss.bssid))
8543 return -EINVAL;
8544 }
8545 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8546 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8547
8548 if (info->attrs[NL80211_ATTR_IE]) {
8549 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8550 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8551 }
8552
8553 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8554 if (err)
8555 return err;
8556
8557 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8558 NL80211_IFTYPE_ADHOC))
8559 return -EINVAL;
8560
8561 switch (ibss.chandef.width) {
8562 case NL80211_CHAN_WIDTH_5:
8563 case NL80211_CHAN_WIDTH_10:
8564 case NL80211_CHAN_WIDTH_20_NOHT:
8565 break;
8566 case NL80211_CHAN_WIDTH_20:
8567 case NL80211_CHAN_WIDTH_40:
8568 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8569 return -EINVAL;
8570 break;
8571 case NL80211_CHAN_WIDTH_80:
8572 case NL80211_CHAN_WIDTH_80P80:
8573 case NL80211_CHAN_WIDTH_160:
8574 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8575 return -EINVAL;
8576 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8577 NL80211_EXT_FEATURE_VHT_IBSS))
8578 return -EINVAL;
8579 break;
8580 default:
8581 return -EINVAL;
8582 }
8583
8584 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8585 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8586
8587 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8588 u8 *rates =
8589 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8590 int n_rates =
8591 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8592 struct ieee80211_supported_band *sband =
8593 wiphy->bands[ibss.chandef.chan->band];
8594
8595 err = ieee80211_get_ratemask(sband, rates, n_rates,
8596 &ibss.basic_rates);
8597 if (err)
8598 return err;
8599 }
8600
8601 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8602 memcpy(&ibss.ht_capa_mask,
8603 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8604 sizeof(ibss.ht_capa_mask));
8605
8606 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8607 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8608 return -EINVAL;
8609 memcpy(&ibss.ht_capa,
8610 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8611 sizeof(ibss.ht_capa));
8612 }
8613
8614 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8615 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8616 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8617 return -EINVAL;
8618
8619 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8620 bool no_ht = false;
8621
8622 connkeys = nl80211_parse_connkeys(rdev,
8623 info->attrs[NL80211_ATTR_KEYS],
8624 &no_ht);
8625 if (IS_ERR(connkeys))
8626 return PTR_ERR(connkeys);
8627
8628 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8629 no_ht) {
8630 kzfree(connkeys);
8631 return -EINVAL;
8632 }
8633 }
8634
8635 ibss.control_port =
8636 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8637
8638 ibss.userspace_handles_dfs =
8639 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8640
8641 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8642 if (err)
8643 kzfree(connkeys);
8644 return err;
8645 }
8646
8647 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8648 {
8649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8650 struct net_device *dev = info->user_ptr[1];
8651
8652 if (!rdev->ops->leave_ibss)
8653 return -EOPNOTSUPP;
8654
8655 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8656 return -EOPNOTSUPP;
8657
8658 return cfg80211_leave_ibss(rdev, dev, false);
8659 }
8660
8661 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8662 {
8663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8664 struct net_device *dev = info->user_ptr[1];
8665 int mcast_rate[NUM_NL80211_BANDS];
8666 u32 nla_rate;
8667 int err;
8668
8669 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8670 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8671 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8672 return -EOPNOTSUPP;
8673
8674 if (!rdev->ops->set_mcast_rate)
8675 return -EOPNOTSUPP;
8676
8677 memset(mcast_rate, 0, sizeof(mcast_rate));
8678
8679 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8680 return -EINVAL;
8681
8682 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8683 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8684 return -EINVAL;
8685
8686 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8687
8688 return err;
8689 }
8690
8691 static struct sk_buff *
8692 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8693 struct wireless_dev *wdev, int approxlen,
8694 u32 portid, u32 seq, enum nl80211_commands cmd,
8695 enum nl80211_attrs attr,
8696 const struct nl80211_vendor_cmd_info *info,
8697 gfp_t gfp)
8698 {
8699 struct sk_buff *skb;
8700 void *hdr;
8701 struct nlattr *data;
8702
8703 skb = nlmsg_new(approxlen + 100, gfp);
8704 if (!skb)
8705 return NULL;
8706
8707 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8708 if (!hdr) {
8709 kfree_skb(skb);
8710 return NULL;
8711 }
8712
8713 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8714 goto nla_put_failure;
8715
8716 if (info) {
8717 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8718 info->vendor_id))
8719 goto nla_put_failure;
8720 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8721 info->subcmd))
8722 goto nla_put_failure;
8723 }
8724
8725 if (wdev) {
8726 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8727 wdev_id(wdev), NL80211_ATTR_PAD))
8728 goto nla_put_failure;
8729 if (wdev->netdev &&
8730 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8731 wdev->netdev->ifindex))
8732 goto nla_put_failure;
8733 }
8734
8735 data = nla_nest_start(skb, attr);
8736 if (!data)
8737 goto nla_put_failure;
8738
8739 ((void **)skb->cb)[0] = rdev;
8740 ((void **)skb->cb)[1] = hdr;
8741 ((void **)skb->cb)[2] = data;
8742
8743 return skb;
8744
8745 nla_put_failure:
8746 kfree_skb(skb);
8747 return NULL;
8748 }
8749
8750 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8751 struct wireless_dev *wdev,
8752 enum nl80211_commands cmd,
8753 enum nl80211_attrs attr,
8754 int vendor_event_idx,
8755 int approxlen, gfp_t gfp)
8756 {
8757 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8758 const struct nl80211_vendor_cmd_info *info;
8759
8760 switch (cmd) {
8761 case NL80211_CMD_TESTMODE:
8762 if (WARN_ON(vendor_event_idx != -1))
8763 return NULL;
8764 info = NULL;
8765 break;
8766 case NL80211_CMD_VENDOR:
8767 if (WARN_ON(vendor_event_idx < 0 ||
8768 vendor_event_idx >= wiphy->n_vendor_events))
8769 return NULL;
8770 info = &wiphy->vendor_events[vendor_event_idx];
8771 break;
8772 default:
8773 WARN_ON(1);
8774 return NULL;
8775 }
8776
8777 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8778 cmd, attr, info, gfp);
8779 }
8780 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8781
8782 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8783 {
8784 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8785 void *hdr = ((void **)skb->cb)[1];
8786 struct nlattr *data = ((void **)skb->cb)[2];
8787 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8788
8789 /* clear CB data for netlink core to own from now on */
8790 memset(skb->cb, 0, sizeof(skb->cb));
8791
8792 nla_nest_end(skb, data);
8793 genlmsg_end(skb, hdr);
8794
8795 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8796 mcgrp = NL80211_MCGRP_VENDOR;
8797
8798 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8799 mcgrp, gfp);
8800 }
8801 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8802
8803 #ifdef CONFIG_NL80211_TESTMODE
8804 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8805 {
8806 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8807 struct wireless_dev *wdev =
8808 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8809 int err;
8810
8811 if (!rdev->ops->testmode_cmd)
8812 return -EOPNOTSUPP;
8813
8814 if (IS_ERR(wdev)) {
8815 err = PTR_ERR(wdev);
8816 if (err != -EINVAL)
8817 return err;
8818 wdev = NULL;
8819 } else if (wdev->wiphy != &rdev->wiphy) {
8820 return -EINVAL;
8821 }
8822
8823 if (!info->attrs[NL80211_ATTR_TESTDATA])
8824 return -EINVAL;
8825
8826 rdev->cur_cmd_info = info;
8827 err = rdev_testmode_cmd(rdev, wdev,
8828 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8829 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8830 rdev->cur_cmd_info = NULL;
8831
8832 return err;
8833 }
8834
8835 static int nl80211_testmode_dump(struct sk_buff *skb,
8836 struct netlink_callback *cb)
8837 {
8838 struct cfg80211_registered_device *rdev;
8839 int err;
8840 long phy_idx;
8841 void *data = NULL;
8842 int data_len = 0;
8843
8844 rtnl_lock();
8845
8846 if (cb->args[0]) {
8847 /*
8848 * 0 is a valid index, but not valid for args[0],
8849 * so we need to offset by 1.
8850 */
8851 phy_idx = cb->args[0] - 1;
8852
8853 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8854 if (!rdev) {
8855 err = -ENOENT;
8856 goto out_err;
8857 }
8858 } else {
8859 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8860
8861 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8862 attrbuf, nl80211_fam.maxattr,
8863 nl80211_policy, NULL);
8864 if (err)
8865 goto out_err;
8866
8867 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8868 if (IS_ERR(rdev)) {
8869 err = PTR_ERR(rdev);
8870 goto out_err;
8871 }
8872 phy_idx = rdev->wiphy_idx;
8873
8874 if (attrbuf[NL80211_ATTR_TESTDATA])
8875 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8876 }
8877
8878 if (cb->args[1]) {
8879 data = nla_data((void *)cb->args[1]);
8880 data_len = nla_len((void *)cb->args[1]);
8881 }
8882
8883 if (!rdev->ops->testmode_dump) {
8884 err = -EOPNOTSUPP;
8885 goto out_err;
8886 }
8887
8888 while (1) {
8889 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8890 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8891 NL80211_CMD_TESTMODE);
8892 struct nlattr *tmdata;
8893
8894 if (!hdr)
8895 break;
8896
8897 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8898 genlmsg_cancel(skb, hdr);
8899 break;
8900 }
8901
8902 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8903 if (!tmdata) {
8904 genlmsg_cancel(skb, hdr);
8905 break;
8906 }
8907 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8908 nla_nest_end(skb, tmdata);
8909
8910 if (err == -ENOBUFS || err == -ENOENT) {
8911 genlmsg_cancel(skb, hdr);
8912 break;
8913 } else if (err) {
8914 genlmsg_cancel(skb, hdr);
8915 goto out_err;
8916 }
8917
8918 genlmsg_end(skb, hdr);
8919 }
8920
8921 err = skb->len;
8922 /* see above */
8923 cb->args[0] = phy_idx + 1;
8924 out_err:
8925 rtnl_unlock();
8926 return err;
8927 }
8928 #endif
8929
8930 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8931 {
8932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8933 struct net_device *dev = info->user_ptr[1];
8934 struct cfg80211_connect_params connect;
8935 struct wiphy *wiphy;
8936 struct cfg80211_cached_keys *connkeys = NULL;
8937 int err;
8938
8939 memset(&connect, 0, sizeof(connect));
8940
8941 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8942 return -EINVAL;
8943
8944 if (!info->attrs[NL80211_ATTR_SSID] ||
8945 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8946 return -EINVAL;
8947
8948 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8949 connect.auth_type =
8950 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8951 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8952 NL80211_CMD_CONNECT))
8953 return -EINVAL;
8954 } else
8955 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8956
8957 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8958
8959 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8960 !wiphy_ext_feature_isset(&rdev->wiphy,
8961 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8962 return -EINVAL;
8963 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8964
8965 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8966 NL80211_MAX_NR_CIPHER_SUITES);
8967 if (err)
8968 return err;
8969
8970 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8971 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8972 return -EOPNOTSUPP;
8973
8974 wiphy = &rdev->wiphy;
8975
8976 connect.bg_scan_period = -1;
8977 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8978 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8979 connect.bg_scan_period =
8980 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8981 }
8982
8983 if (info->attrs[NL80211_ATTR_MAC])
8984 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8985 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8986 connect.bssid_hint =
8987 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8988 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8989 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8990
8991 if (info->attrs[NL80211_ATTR_IE]) {
8992 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8993 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8994 }
8995
8996 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8997 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8998 if (connect.mfp == NL80211_MFP_OPTIONAL &&
8999 !wiphy_ext_feature_isset(&rdev->wiphy,
9000 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9001 return -EOPNOTSUPP;
9002
9003 if (connect.mfp != NL80211_MFP_REQUIRED &&
9004 connect.mfp != NL80211_MFP_NO &&
9005 connect.mfp != NL80211_MFP_OPTIONAL)
9006 return -EINVAL;
9007 } else {
9008 connect.mfp = NL80211_MFP_NO;
9009 }
9010
9011 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9012 connect.prev_bssid =
9013 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9014
9015 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9016 connect.channel = nl80211_get_valid_chan(
9017 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9018 if (!connect.channel)
9019 return -EINVAL;
9020 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9021 connect.channel_hint = nl80211_get_valid_chan(
9022 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9023 if (!connect.channel_hint)
9024 return -EINVAL;
9025 }
9026
9027 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9028 connkeys = nl80211_parse_connkeys(rdev,
9029 info->attrs[NL80211_ATTR_KEYS], NULL);
9030 if (IS_ERR(connkeys))
9031 return PTR_ERR(connkeys);
9032 }
9033
9034 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9035 connect.flags |= ASSOC_REQ_DISABLE_HT;
9036
9037 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9038 memcpy(&connect.ht_capa_mask,
9039 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9040 sizeof(connect.ht_capa_mask));
9041
9042 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9043 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9044 kzfree(connkeys);
9045 return -EINVAL;
9046 }
9047 memcpy(&connect.ht_capa,
9048 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9049 sizeof(connect.ht_capa));
9050 }
9051
9052 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9053 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9054
9055 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9056 memcpy(&connect.vht_capa_mask,
9057 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9058 sizeof(connect.vht_capa_mask));
9059
9060 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9061 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9062 kzfree(connkeys);
9063 return -EINVAL;
9064 }
9065 memcpy(&connect.vht_capa,
9066 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9067 sizeof(connect.vht_capa));
9068 }
9069
9070 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9071 if (!((rdev->wiphy.features &
9072 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9073 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9074 !wiphy_ext_feature_isset(&rdev->wiphy,
9075 NL80211_EXT_FEATURE_RRM)) {
9076 kzfree(connkeys);
9077 return -EINVAL;
9078 }
9079 connect.flags |= ASSOC_REQ_USE_RRM;
9080 }
9081
9082 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9083 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9084 kzfree(connkeys);
9085 return -EOPNOTSUPP;
9086 }
9087
9088 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9089 /* bss selection makes no sense if bssid is set */
9090 if (connect.bssid) {
9091 kzfree(connkeys);
9092 return -EINVAL;
9093 }
9094
9095 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9096 wiphy, &connect.bss_select);
9097 if (err) {
9098 kzfree(connkeys);
9099 return err;
9100 }
9101 }
9102
9103 if (wiphy_ext_feature_isset(&rdev->wiphy,
9104 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9105 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9106 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9107 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9108 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9109 connect.fils_erp_username =
9110 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9111 connect.fils_erp_username_len =
9112 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9113 connect.fils_erp_realm =
9114 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9115 connect.fils_erp_realm_len =
9116 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9117 connect.fils_erp_next_seq_num =
9118 nla_get_u16(
9119 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9120 connect.fils_erp_rrk =
9121 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9122 connect.fils_erp_rrk_len =
9123 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9124 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9125 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9126 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9127 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9128 kzfree(connkeys);
9129 return -EINVAL;
9130 }
9131
9132 wdev_lock(dev->ieee80211_ptr);
9133
9134 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9135 connect.prev_bssid);
9136 if (err)
9137 kzfree(connkeys);
9138
9139 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9140 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9141 if (connect.bssid)
9142 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9143 connect.bssid, ETH_ALEN);
9144 else
9145 memset(dev->ieee80211_ptr->disconnect_bssid,
9146 0, ETH_ALEN);
9147 }
9148
9149 wdev_unlock(dev->ieee80211_ptr);
9150
9151 return err;
9152 }
9153
9154 static int nl80211_update_connect_params(struct sk_buff *skb,
9155 struct genl_info *info)
9156 {
9157 struct cfg80211_connect_params connect = {};
9158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9159 struct net_device *dev = info->user_ptr[1];
9160 struct wireless_dev *wdev = dev->ieee80211_ptr;
9161 u32 changed = 0;
9162 int ret;
9163
9164 if (!rdev->ops->update_connect_params)
9165 return -EOPNOTSUPP;
9166
9167 if (info->attrs[NL80211_ATTR_IE]) {
9168 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9169 return -EINVAL;
9170 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9171 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9172 changed |= UPDATE_ASSOC_IES;
9173 }
9174
9175 wdev_lock(dev->ieee80211_ptr);
9176 if (!wdev->current_bss)
9177 ret = -ENOLINK;
9178 else
9179 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9180 wdev_unlock(dev->ieee80211_ptr);
9181
9182 return ret;
9183 }
9184
9185 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9186 {
9187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9188 struct net_device *dev = info->user_ptr[1];
9189 u16 reason;
9190 int ret;
9191
9192 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9193 reason = WLAN_REASON_DEAUTH_LEAVING;
9194 else
9195 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9196
9197 if (reason == 0)
9198 return -EINVAL;
9199
9200 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9202 return -EOPNOTSUPP;
9203
9204 wdev_lock(dev->ieee80211_ptr);
9205 ret = cfg80211_disconnect(rdev, dev, reason, true);
9206 wdev_unlock(dev->ieee80211_ptr);
9207 return ret;
9208 }
9209
9210 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9211 {
9212 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9213 struct net *net;
9214 int err;
9215
9216 if (info->attrs[NL80211_ATTR_PID]) {
9217 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9218
9219 net = get_net_ns_by_pid(pid);
9220 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9221 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9222
9223 net = get_net_ns_by_fd(fd);
9224 } else {
9225 return -EINVAL;
9226 }
9227
9228 if (IS_ERR(net))
9229 return PTR_ERR(net);
9230
9231 err = 0;
9232
9233 /* check if anything to do */
9234 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9235 err = cfg80211_switch_netns(rdev, net);
9236
9237 put_net(net);
9238 return err;
9239 }
9240
9241 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9242 {
9243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9244 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9245 struct cfg80211_pmksa *pmksa) = NULL;
9246 struct net_device *dev = info->user_ptr[1];
9247 struct cfg80211_pmksa pmksa;
9248
9249 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9250
9251 if (!info->attrs[NL80211_ATTR_PMKID])
9252 return -EINVAL;
9253
9254 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9255
9256 if (info->attrs[NL80211_ATTR_MAC]) {
9257 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9258 } else if (info->attrs[NL80211_ATTR_SSID] &&
9259 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9260 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9261 info->attrs[NL80211_ATTR_PMK])) {
9262 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9263 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9264 pmksa.cache_id =
9265 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9266 } else {
9267 return -EINVAL;
9268 }
9269 if (info->attrs[NL80211_ATTR_PMK]) {
9270 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9271 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9272 }
9273
9274 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9276 return -EOPNOTSUPP;
9277
9278 switch (info->genlhdr->cmd) {
9279 case NL80211_CMD_SET_PMKSA:
9280 rdev_ops = rdev->ops->set_pmksa;
9281 break;
9282 case NL80211_CMD_DEL_PMKSA:
9283 rdev_ops = rdev->ops->del_pmksa;
9284 break;
9285 default:
9286 WARN_ON(1);
9287 break;
9288 }
9289
9290 if (!rdev_ops)
9291 return -EOPNOTSUPP;
9292
9293 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9294 }
9295
9296 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9297 {
9298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9299 struct net_device *dev = info->user_ptr[1];
9300
9301 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9302 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9303 return -EOPNOTSUPP;
9304
9305 if (!rdev->ops->flush_pmksa)
9306 return -EOPNOTSUPP;
9307
9308 return rdev_flush_pmksa(rdev, dev);
9309 }
9310
9311 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9312 {
9313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9314 struct net_device *dev = info->user_ptr[1];
9315 u8 action_code, dialog_token;
9316 u32 peer_capability = 0;
9317 u16 status_code;
9318 u8 *peer;
9319 bool initiator;
9320
9321 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9322 !rdev->ops->tdls_mgmt)
9323 return -EOPNOTSUPP;
9324
9325 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9326 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9327 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9328 !info->attrs[NL80211_ATTR_IE] ||
9329 !info->attrs[NL80211_ATTR_MAC])
9330 return -EINVAL;
9331
9332 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9333 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9334 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9335 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9336 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9337 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9338 peer_capability =
9339 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9340
9341 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9342 dialog_token, status_code, peer_capability,
9343 initiator,
9344 nla_data(info->attrs[NL80211_ATTR_IE]),
9345 nla_len(info->attrs[NL80211_ATTR_IE]));
9346 }
9347
9348 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9349 {
9350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9351 struct net_device *dev = info->user_ptr[1];
9352 enum nl80211_tdls_operation operation;
9353 u8 *peer;
9354
9355 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9356 !rdev->ops->tdls_oper)
9357 return -EOPNOTSUPP;
9358
9359 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9360 !info->attrs[NL80211_ATTR_MAC])
9361 return -EINVAL;
9362
9363 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9364 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9365
9366 return rdev_tdls_oper(rdev, dev, peer, operation);
9367 }
9368
9369 static int nl80211_remain_on_channel(struct sk_buff *skb,
9370 struct genl_info *info)
9371 {
9372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9373 struct wireless_dev *wdev = info->user_ptr[1];
9374 struct cfg80211_chan_def chandef;
9375 const struct cfg80211_chan_def *compat_chandef;
9376 struct sk_buff *msg;
9377 void *hdr;
9378 u64 cookie;
9379 u32 duration;
9380 int err;
9381
9382 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9383 !info->attrs[NL80211_ATTR_DURATION])
9384 return -EINVAL;
9385
9386 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9387
9388 if (!rdev->ops->remain_on_channel ||
9389 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9390 return -EOPNOTSUPP;
9391
9392 /*
9393 * We should be on that channel for at least a minimum amount of
9394 * time (10ms) but no longer than the driver supports.
9395 */
9396 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9397 duration > rdev->wiphy.max_remain_on_channel_duration)
9398 return -EINVAL;
9399
9400 err = nl80211_parse_chandef(rdev, info, &chandef);
9401 if (err)
9402 return err;
9403
9404 wdev_lock(wdev);
9405 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9406 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9407 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9408 &chandef);
9409 if (compat_chandef != &chandef) {
9410 wdev_unlock(wdev);
9411 return -EBUSY;
9412 }
9413 }
9414 wdev_unlock(wdev);
9415
9416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9417 if (!msg)
9418 return -ENOMEM;
9419
9420 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9421 NL80211_CMD_REMAIN_ON_CHANNEL);
9422 if (!hdr) {
9423 err = -ENOBUFS;
9424 goto free_msg;
9425 }
9426
9427 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9428 duration, &cookie);
9429
9430 if (err)
9431 goto free_msg;
9432
9433 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9434 NL80211_ATTR_PAD))
9435 goto nla_put_failure;
9436
9437 genlmsg_end(msg, hdr);
9438
9439 return genlmsg_reply(msg, info);
9440
9441 nla_put_failure:
9442 err = -ENOBUFS;
9443 free_msg:
9444 nlmsg_free(msg);
9445 return err;
9446 }
9447
9448 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9449 struct genl_info *info)
9450 {
9451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9452 struct wireless_dev *wdev = info->user_ptr[1];
9453 u64 cookie;
9454
9455 if (!info->attrs[NL80211_ATTR_COOKIE])
9456 return -EINVAL;
9457
9458 if (!rdev->ops->cancel_remain_on_channel)
9459 return -EOPNOTSUPP;
9460
9461 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9462
9463 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9464 }
9465
9466 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9467 struct genl_info *info)
9468 {
9469 struct cfg80211_bitrate_mask mask;
9470 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9471 struct net_device *dev = info->user_ptr[1];
9472 int err;
9473
9474 if (!rdev->ops->set_bitrate_mask)
9475 return -EOPNOTSUPP;
9476
9477 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9478 if (err)
9479 return err;
9480
9481 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9482 }
9483
9484 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9485 {
9486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9487 struct wireless_dev *wdev = info->user_ptr[1];
9488 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9489
9490 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9491 return -EINVAL;
9492
9493 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9494 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9495
9496 switch (wdev->iftype) {
9497 case NL80211_IFTYPE_STATION:
9498 case NL80211_IFTYPE_ADHOC:
9499 case NL80211_IFTYPE_P2P_CLIENT:
9500 case NL80211_IFTYPE_AP:
9501 case NL80211_IFTYPE_AP_VLAN:
9502 case NL80211_IFTYPE_MESH_POINT:
9503 case NL80211_IFTYPE_P2P_GO:
9504 case NL80211_IFTYPE_P2P_DEVICE:
9505 break;
9506 case NL80211_IFTYPE_NAN:
9507 default:
9508 return -EOPNOTSUPP;
9509 }
9510
9511 /* not much point in registering if we can't reply */
9512 if (!rdev->ops->mgmt_tx)
9513 return -EOPNOTSUPP;
9514
9515 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9516 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9517 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9518 }
9519
9520 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9521 {
9522 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9523 struct wireless_dev *wdev = info->user_ptr[1];
9524 struct cfg80211_chan_def chandef;
9525 int err;
9526 void *hdr = NULL;
9527 u64 cookie;
9528 struct sk_buff *msg = NULL;
9529 struct cfg80211_mgmt_tx_params params = {
9530 .dont_wait_for_ack =
9531 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9532 };
9533
9534 if (!info->attrs[NL80211_ATTR_FRAME])
9535 return -EINVAL;
9536
9537 if (!rdev->ops->mgmt_tx)
9538 return -EOPNOTSUPP;
9539
9540 switch (wdev->iftype) {
9541 case NL80211_IFTYPE_P2P_DEVICE:
9542 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9543 return -EINVAL;
9544 case NL80211_IFTYPE_STATION:
9545 case NL80211_IFTYPE_ADHOC:
9546 case NL80211_IFTYPE_P2P_CLIENT:
9547 case NL80211_IFTYPE_AP:
9548 case NL80211_IFTYPE_AP_VLAN:
9549 case NL80211_IFTYPE_MESH_POINT:
9550 case NL80211_IFTYPE_P2P_GO:
9551 break;
9552 case NL80211_IFTYPE_NAN:
9553 default:
9554 return -EOPNOTSUPP;
9555 }
9556
9557 if (info->attrs[NL80211_ATTR_DURATION]) {
9558 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9559 return -EINVAL;
9560 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9561
9562 /*
9563 * We should wait on the channel for at least a minimum amount
9564 * of time (10ms) but no longer than the driver supports.
9565 */
9566 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9567 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9568 return -EINVAL;
9569 }
9570
9571 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9572
9573 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9574 return -EINVAL;
9575
9576 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9577
9578 /* get the channel if any has been specified, otherwise pass NULL to
9579 * the driver. The latter will use the current one
9580 */
9581 chandef.chan = NULL;
9582 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9583 err = nl80211_parse_chandef(rdev, info, &chandef);
9584 if (err)
9585 return err;
9586 }
9587
9588 if (!chandef.chan && params.offchan)
9589 return -EINVAL;
9590
9591 wdev_lock(wdev);
9592 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9593 wdev_unlock(wdev);
9594 return -EBUSY;
9595 }
9596 wdev_unlock(wdev);
9597
9598 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9599 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9600
9601 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9602 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9603 int i;
9604
9605 if (len % sizeof(u16))
9606 return -EINVAL;
9607
9608 params.n_csa_offsets = len / sizeof(u16);
9609 params.csa_offsets =
9610 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9611
9612 /* check that all the offsets fit the frame */
9613 for (i = 0; i < params.n_csa_offsets; i++) {
9614 if (params.csa_offsets[i] >= params.len)
9615 return -EINVAL;
9616 }
9617 }
9618
9619 if (!params.dont_wait_for_ack) {
9620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9621 if (!msg)
9622 return -ENOMEM;
9623
9624 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9625 NL80211_CMD_FRAME);
9626 if (!hdr) {
9627 err = -ENOBUFS;
9628 goto free_msg;
9629 }
9630 }
9631
9632 params.chan = chandef.chan;
9633 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9634 if (err)
9635 goto free_msg;
9636
9637 if (msg) {
9638 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9639 NL80211_ATTR_PAD))
9640 goto nla_put_failure;
9641
9642 genlmsg_end(msg, hdr);
9643 return genlmsg_reply(msg, info);
9644 }
9645
9646 return 0;
9647
9648 nla_put_failure:
9649 err = -ENOBUFS;
9650 free_msg:
9651 nlmsg_free(msg);
9652 return err;
9653 }
9654
9655 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9656 {
9657 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9658 struct wireless_dev *wdev = info->user_ptr[1];
9659 u64 cookie;
9660
9661 if (!info->attrs[NL80211_ATTR_COOKIE])
9662 return -EINVAL;
9663
9664 if (!rdev->ops->mgmt_tx_cancel_wait)
9665 return -EOPNOTSUPP;
9666
9667 switch (wdev->iftype) {
9668 case NL80211_IFTYPE_STATION:
9669 case NL80211_IFTYPE_ADHOC:
9670 case NL80211_IFTYPE_P2P_CLIENT:
9671 case NL80211_IFTYPE_AP:
9672 case NL80211_IFTYPE_AP_VLAN:
9673 case NL80211_IFTYPE_P2P_GO:
9674 case NL80211_IFTYPE_P2P_DEVICE:
9675 break;
9676 case NL80211_IFTYPE_NAN:
9677 default:
9678 return -EOPNOTSUPP;
9679 }
9680
9681 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9682
9683 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9684 }
9685
9686 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9687 {
9688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9689 struct wireless_dev *wdev;
9690 struct net_device *dev = info->user_ptr[1];
9691 u8 ps_state;
9692 bool state;
9693 int err;
9694
9695 if (!info->attrs[NL80211_ATTR_PS_STATE])
9696 return -EINVAL;
9697
9698 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9699
9700 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9701 return -EINVAL;
9702
9703 wdev = dev->ieee80211_ptr;
9704
9705 if (!rdev->ops->set_power_mgmt)
9706 return -EOPNOTSUPP;
9707
9708 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9709
9710 if (state == wdev->ps)
9711 return 0;
9712
9713 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9714 if (!err)
9715 wdev->ps = state;
9716 return err;
9717 }
9718
9719 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9720 {
9721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9722 enum nl80211_ps_state ps_state;
9723 struct wireless_dev *wdev;
9724 struct net_device *dev = info->user_ptr[1];
9725 struct sk_buff *msg;
9726 void *hdr;
9727 int err;
9728
9729 wdev = dev->ieee80211_ptr;
9730
9731 if (!rdev->ops->set_power_mgmt)
9732 return -EOPNOTSUPP;
9733
9734 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9735 if (!msg)
9736 return -ENOMEM;
9737
9738 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9739 NL80211_CMD_GET_POWER_SAVE);
9740 if (!hdr) {
9741 err = -ENOBUFS;
9742 goto free_msg;
9743 }
9744
9745 if (wdev->ps)
9746 ps_state = NL80211_PS_ENABLED;
9747 else
9748 ps_state = NL80211_PS_DISABLED;
9749
9750 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9751 goto nla_put_failure;
9752
9753 genlmsg_end(msg, hdr);
9754 return genlmsg_reply(msg, info);
9755
9756 nla_put_failure:
9757 err = -ENOBUFS;
9758 free_msg:
9759 nlmsg_free(msg);
9760 return err;
9761 }
9762
9763 static const struct nla_policy
9764 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9765 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9766 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9767 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9768 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9769 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9770 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9771 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9772 };
9773
9774 static int nl80211_set_cqm_txe(struct genl_info *info,
9775 u32 rate, u32 pkts, u32 intvl)
9776 {
9777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9778 struct net_device *dev = info->user_ptr[1];
9779 struct wireless_dev *wdev = dev->ieee80211_ptr;
9780
9781 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9782 return -EINVAL;
9783
9784 if (!rdev->ops->set_cqm_txe_config)
9785 return -EOPNOTSUPP;
9786
9787 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9788 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9789 return -EOPNOTSUPP;
9790
9791 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9792 }
9793
9794 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9795 struct net_device *dev)
9796 {
9797 struct wireless_dev *wdev = dev->ieee80211_ptr;
9798 s32 last, low, high;
9799 u32 hyst;
9800 int i, n;
9801 int err;
9802
9803 /* RSSI reporting disabled? */
9804 if (!wdev->cqm_config)
9805 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9806
9807 /*
9808 * Obtain current RSSI value if possible, if not and no RSSI threshold
9809 * event has been received yet, we should receive an event after a
9810 * connection is established and enough beacons received to calculate
9811 * the average.
9812 */
9813 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9814 rdev->ops->get_station) {
9815 struct station_info sinfo = {};
9816 u8 *mac_addr;
9817
9818 mac_addr = wdev->current_bss->pub.bssid;
9819
9820 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9821 if (err)
9822 return err;
9823
9824 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9825 wdev->cqm_config->last_rssi_event_value =
9826 (s8) sinfo.rx_beacon_signal_avg;
9827 }
9828
9829 last = wdev->cqm_config->last_rssi_event_value;
9830 hyst = wdev->cqm_config->rssi_hyst;
9831 n = wdev->cqm_config->n_rssi_thresholds;
9832
9833 for (i = 0; i < n; i++)
9834 if (last < wdev->cqm_config->rssi_thresholds[i])
9835 break;
9836
9837 low = i > 0 ?
9838 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9839 high = i < n ?
9840 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9841
9842 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9843 }
9844
9845 static int nl80211_set_cqm_rssi(struct genl_info *info,
9846 const s32 *thresholds, int n_thresholds,
9847 u32 hysteresis)
9848 {
9849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9850 struct net_device *dev = info->user_ptr[1];
9851 struct wireless_dev *wdev = dev->ieee80211_ptr;
9852 int i, err;
9853 s32 prev = S32_MIN;
9854
9855 /* Check all values negative and sorted */
9856 for (i = 0; i < n_thresholds; i++) {
9857 if (thresholds[i] > 0 || thresholds[i] <= prev)
9858 return -EINVAL;
9859
9860 prev = thresholds[i];
9861 }
9862
9863 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9864 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9865 return -EOPNOTSUPP;
9866
9867 wdev_lock(wdev);
9868 cfg80211_cqm_config_free(wdev);
9869 wdev_unlock(wdev);
9870
9871 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9872 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9873 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9874
9875 return rdev_set_cqm_rssi_config(rdev, dev,
9876 thresholds[0], hysteresis);
9877 }
9878
9879 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9880 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9881 return -EOPNOTSUPP;
9882
9883 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9884 n_thresholds = 0;
9885
9886 wdev_lock(wdev);
9887 if (n_thresholds) {
9888 struct cfg80211_cqm_config *cqm_config;
9889
9890 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9891 n_thresholds * sizeof(s32), GFP_KERNEL);
9892 if (!cqm_config) {
9893 err = -ENOMEM;
9894 goto unlock;
9895 }
9896
9897 cqm_config->rssi_hyst = hysteresis;
9898 cqm_config->n_rssi_thresholds = n_thresholds;
9899 memcpy(cqm_config->rssi_thresholds, thresholds,
9900 n_thresholds * sizeof(s32));
9901
9902 wdev->cqm_config = cqm_config;
9903 }
9904
9905 err = cfg80211_cqm_rssi_update(rdev, dev);
9906
9907 unlock:
9908 wdev_unlock(wdev);
9909
9910 return err;
9911 }
9912
9913 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9914 {
9915 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9916 struct nlattr *cqm;
9917 int err;
9918
9919 cqm = info->attrs[NL80211_ATTR_CQM];
9920 if (!cqm)
9921 return -EINVAL;
9922
9923 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9924 nl80211_attr_cqm_policy, info->extack);
9925 if (err)
9926 return err;
9927
9928 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9929 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9930 const s32 *thresholds =
9931 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9932 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9933 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9934
9935 if (len % 4)
9936 return -EINVAL;
9937
9938 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9939 hysteresis);
9940 }
9941
9942 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9943 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9944 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9945 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9946 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9947 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9948
9949 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9950 }
9951
9952 return -EINVAL;
9953 }
9954
9955 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9956 {
9957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9958 struct net_device *dev = info->user_ptr[1];
9959 struct ocb_setup setup = {};
9960 int err;
9961
9962 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9963 if (err)
9964 return err;
9965
9966 return cfg80211_join_ocb(rdev, dev, &setup);
9967 }
9968
9969 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9970 {
9971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9972 struct net_device *dev = info->user_ptr[1];
9973
9974 return cfg80211_leave_ocb(rdev, dev);
9975 }
9976
9977 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9978 {
9979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9980 struct net_device *dev = info->user_ptr[1];
9981 struct mesh_config cfg;
9982 struct mesh_setup setup;
9983 int err;
9984
9985 /* start with default */
9986 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9987 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9988
9989 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9990 /* and parse parameters if given */
9991 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9992 if (err)
9993 return err;
9994 }
9995
9996 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9997 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9998 return -EINVAL;
9999
10000 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10001 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10002
10003 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10004 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10005 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10006 return -EINVAL;
10007
10008 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10009 setup.beacon_interval =
10010 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10011
10012 err = cfg80211_validate_beacon_int(rdev,
10013 NL80211_IFTYPE_MESH_POINT,
10014 setup.beacon_interval);
10015 if (err)
10016 return err;
10017 }
10018
10019 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10020 setup.dtim_period =
10021 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10022 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10023 return -EINVAL;
10024 }
10025
10026 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10027 /* parse additional setup parameters if given */
10028 err = nl80211_parse_mesh_setup(info, &setup);
10029 if (err)
10030 return err;
10031 }
10032
10033 if (setup.user_mpm)
10034 cfg.auto_open_plinks = false;
10035
10036 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10037 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10038 if (err)
10039 return err;
10040 } else {
10041 /* cfg80211_join_mesh() will sort it out */
10042 setup.chandef.chan = NULL;
10043 }
10044
10045 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10046 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10047 int n_rates =
10048 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10049 struct ieee80211_supported_band *sband;
10050
10051 if (!setup.chandef.chan)
10052 return -EINVAL;
10053
10054 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10055
10056 err = ieee80211_get_ratemask(sband, rates, n_rates,
10057 &setup.basic_rates);
10058 if (err)
10059 return err;
10060 }
10061
10062 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10063 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10064 if (err)
10065 return err;
10066
10067 if (!setup.chandef.chan)
10068 return -EINVAL;
10069
10070 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10071 &setup.beacon_rate);
10072 if (err)
10073 return err;
10074 }
10075
10076 setup.userspace_handles_dfs =
10077 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10078
10079 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10080 }
10081
10082 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10083 {
10084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10085 struct net_device *dev = info->user_ptr[1];
10086
10087 return cfg80211_leave_mesh(rdev, dev);
10088 }
10089
10090 #ifdef CONFIG_PM
10091 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10092 struct cfg80211_registered_device *rdev)
10093 {
10094 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10095 struct nlattr *nl_pats, *nl_pat;
10096 int i, pat_len;
10097
10098 if (!wowlan->n_patterns)
10099 return 0;
10100
10101 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10102 if (!nl_pats)
10103 return -ENOBUFS;
10104
10105 for (i = 0; i < wowlan->n_patterns; i++) {
10106 nl_pat = nla_nest_start(msg, i + 1);
10107 if (!nl_pat)
10108 return -ENOBUFS;
10109 pat_len = wowlan->patterns[i].pattern_len;
10110 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10111 wowlan->patterns[i].mask) ||
10112 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10113 wowlan->patterns[i].pattern) ||
10114 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10115 wowlan->patterns[i].pkt_offset))
10116 return -ENOBUFS;
10117 nla_nest_end(msg, nl_pat);
10118 }
10119 nla_nest_end(msg, nl_pats);
10120
10121 return 0;
10122 }
10123
10124 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10125 struct cfg80211_wowlan_tcp *tcp)
10126 {
10127 struct nlattr *nl_tcp;
10128
10129 if (!tcp)
10130 return 0;
10131
10132 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10133 if (!nl_tcp)
10134 return -ENOBUFS;
10135
10136 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10137 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10138 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10139 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10140 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10141 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10142 tcp->payload_len, tcp->payload) ||
10143 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10144 tcp->data_interval) ||
10145 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10146 tcp->wake_len, tcp->wake_data) ||
10147 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10148 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10149 return -ENOBUFS;
10150
10151 if (tcp->payload_seq.len &&
10152 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10153 sizeof(tcp->payload_seq), &tcp->payload_seq))
10154 return -ENOBUFS;
10155
10156 if (tcp->payload_tok.len &&
10157 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10158 sizeof(tcp->payload_tok) + tcp->tokens_size,
10159 &tcp->payload_tok))
10160 return -ENOBUFS;
10161
10162 nla_nest_end(msg, nl_tcp);
10163
10164 return 0;
10165 }
10166
10167 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10168 struct cfg80211_sched_scan_request *req)
10169 {
10170 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10171 int i;
10172
10173 if (!req)
10174 return 0;
10175
10176 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10177 if (!nd)
10178 return -ENOBUFS;
10179
10180 if (req->n_scan_plans == 1 &&
10181 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10182 req->scan_plans[0].interval * 1000))
10183 return -ENOBUFS;
10184
10185 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10186 return -ENOBUFS;
10187
10188 if (req->relative_rssi_set) {
10189 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10190
10191 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10192 req->relative_rssi))
10193 return -ENOBUFS;
10194
10195 rssi_adjust.band = req->rssi_adjust.band;
10196 rssi_adjust.delta = req->rssi_adjust.delta;
10197 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10198 sizeof(rssi_adjust), &rssi_adjust))
10199 return -ENOBUFS;
10200 }
10201
10202 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10203 if (!freqs)
10204 return -ENOBUFS;
10205
10206 for (i = 0; i < req->n_channels; i++) {
10207 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10208 return -ENOBUFS;
10209 }
10210
10211 nla_nest_end(msg, freqs);
10212
10213 if (req->n_match_sets) {
10214 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10215 if (!matches)
10216 return -ENOBUFS;
10217
10218 for (i = 0; i < req->n_match_sets; i++) {
10219 match = nla_nest_start(msg, i);
10220 if (!match)
10221 return -ENOBUFS;
10222
10223 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10224 req->match_sets[i].ssid.ssid_len,
10225 req->match_sets[i].ssid.ssid))
10226 return -ENOBUFS;
10227 nla_nest_end(msg, match);
10228 }
10229 nla_nest_end(msg, matches);
10230 }
10231
10232 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10233 if (!scan_plans)
10234 return -ENOBUFS;
10235
10236 for (i = 0; i < req->n_scan_plans; i++) {
10237 scan_plan = nla_nest_start(msg, i + 1);
10238 if (!scan_plan)
10239 return -ENOBUFS;
10240
10241 if (!scan_plan ||
10242 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10243 req->scan_plans[i].interval) ||
10244 (req->scan_plans[i].iterations &&
10245 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10246 req->scan_plans[i].iterations)))
10247 return -ENOBUFS;
10248 nla_nest_end(msg, scan_plan);
10249 }
10250 nla_nest_end(msg, scan_plans);
10251
10252 nla_nest_end(msg, nd);
10253
10254 return 0;
10255 }
10256
10257 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10258 {
10259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10260 struct sk_buff *msg;
10261 void *hdr;
10262 u32 size = NLMSG_DEFAULT_SIZE;
10263
10264 if (!rdev->wiphy.wowlan)
10265 return -EOPNOTSUPP;
10266
10267 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10268 /* adjust size to have room for all the data */
10269 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10270 rdev->wiphy.wowlan_config->tcp->payload_len +
10271 rdev->wiphy.wowlan_config->tcp->wake_len +
10272 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10273 }
10274
10275 msg = nlmsg_new(size, GFP_KERNEL);
10276 if (!msg)
10277 return -ENOMEM;
10278
10279 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10280 NL80211_CMD_GET_WOWLAN);
10281 if (!hdr)
10282 goto nla_put_failure;
10283
10284 if (rdev->wiphy.wowlan_config) {
10285 struct nlattr *nl_wowlan;
10286
10287 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10288 if (!nl_wowlan)
10289 goto nla_put_failure;
10290
10291 if ((rdev->wiphy.wowlan_config->any &&
10292 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10293 (rdev->wiphy.wowlan_config->disconnect &&
10294 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10295 (rdev->wiphy.wowlan_config->magic_pkt &&
10296 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10297 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10299 (rdev->wiphy.wowlan_config->eap_identity_req &&
10300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10301 (rdev->wiphy.wowlan_config->four_way_handshake &&
10302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10303 (rdev->wiphy.wowlan_config->rfkill_release &&
10304 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10305 goto nla_put_failure;
10306
10307 if (nl80211_send_wowlan_patterns(msg, rdev))
10308 goto nla_put_failure;
10309
10310 if (nl80211_send_wowlan_tcp(msg,
10311 rdev->wiphy.wowlan_config->tcp))
10312 goto nla_put_failure;
10313
10314 if (nl80211_send_wowlan_nd(
10315 msg,
10316 rdev->wiphy.wowlan_config->nd_config))
10317 goto nla_put_failure;
10318
10319 nla_nest_end(msg, nl_wowlan);
10320 }
10321
10322 genlmsg_end(msg, hdr);
10323 return genlmsg_reply(msg, info);
10324
10325 nla_put_failure:
10326 nlmsg_free(msg);
10327 return -ENOBUFS;
10328 }
10329
10330 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10331 struct nlattr *attr,
10332 struct cfg80211_wowlan *trig)
10333 {
10334 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10335 struct cfg80211_wowlan_tcp *cfg;
10336 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10337 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10338 u32 size;
10339 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10340 int err, port;
10341
10342 if (!rdev->wiphy.wowlan->tcp)
10343 return -EINVAL;
10344
10345 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10346 nl80211_wowlan_tcp_policy, NULL);
10347 if (err)
10348 return err;
10349
10350 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10351 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10352 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10353 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10354 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10355 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10356 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10357 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10358 return -EINVAL;
10359
10360 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10361 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10362 return -EINVAL;
10363
10364 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10365 rdev->wiphy.wowlan->tcp->data_interval_max ||
10366 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10367 return -EINVAL;
10368
10369 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10370 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10371 return -EINVAL;
10372
10373 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10374 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10375 return -EINVAL;
10376
10377 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10378 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10379
10380 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10381 tokens_size = tokln - sizeof(*tok);
10382
10383 if (!tok->len || tokens_size % tok->len)
10384 return -EINVAL;
10385 if (!rdev->wiphy.wowlan->tcp->tok)
10386 return -EINVAL;
10387 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10388 return -EINVAL;
10389 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10390 return -EINVAL;
10391 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10392 return -EINVAL;
10393 if (tok->offset + tok->len > data_size)
10394 return -EINVAL;
10395 }
10396
10397 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10398 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10399 if (!rdev->wiphy.wowlan->tcp->seq)
10400 return -EINVAL;
10401 if (seq->len == 0 || seq->len > 4)
10402 return -EINVAL;
10403 if (seq->len + seq->offset > data_size)
10404 return -EINVAL;
10405 }
10406
10407 size = sizeof(*cfg);
10408 size += data_size;
10409 size += wake_size + wake_mask_size;
10410 size += tokens_size;
10411
10412 cfg = kzalloc(size, GFP_KERNEL);
10413 if (!cfg)
10414 return -ENOMEM;
10415 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10416 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10417 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10418 ETH_ALEN);
10419 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10420 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10421 else
10422 port = 0;
10423 #ifdef CONFIG_INET
10424 /* allocate a socket and port for it and use it */
10425 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10426 IPPROTO_TCP, &cfg->sock, 1);
10427 if (err) {
10428 kfree(cfg);
10429 return err;
10430 }
10431 if (inet_csk_get_port(cfg->sock->sk, port)) {
10432 sock_release(cfg->sock);
10433 kfree(cfg);
10434 return -EADDRINUSE;
10435 }
10436 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10437 #else
10438 if (!port) {
10439 kfree(cfg);
10440 return -EINVAL;
10441 }
10442 cfg->src_port = port;
10443 #endif
10444
10445 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10446 cfg->payload_len = data_size;
10447 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10448 memcpy((void *)cfg->payload,
10449 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10450 data_size);
10451 if (seq)
10452 cfg->payload_seq = *seq;
10453 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10454 cfg->wake_len = wake_size;
10455 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10456 memcpy((void *)cfg->wake_data,
10457 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10458 wake_size);
10459 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10460 data_size + wake_size;
10461 memcpy((void *)cfg->wake_mask,
10462 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10463 wake_mask_size);
10464 if (tok) {
10465 cfg->tokens_size = tokens_size;
10466 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10467 }
10468
10469 trig->tcp = cfg;
10470
10471 return 0;
10472 }
10473
10474 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10475 const struct wiphy_wowlan_support *wowlan,
10476 struct nlattr *attr,
10477 struct cfg80211_wowlan *trig)
10478 {
10479 struct nlattr **tb;
10480 int err;
10481
10482 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10483 if (!tb)
10484 return -ENOMEM;
10485
10486 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10487 err = -EOPNOTSUPP;
10488 goto out;
10489 }
10490
10491 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10492 NULL);
10493 if (err)
10494 goto out;
10495
10496 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10497 wowlan->max_nd_match_sets);
10498 err = PTR_ERR_OR_ZERO(trig->nd_config);
10499 if (err)
10500 trig->nd_config = NULL;
10501
10502 out:
10503 kfree(tb);
10504 return err;
10505 }
10506
10507 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10508 {
10509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10510 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10511 struct cfg80211_wowlan new_triggers = {};
10512 struct cfg80211_wowlan *ntrig;
10513 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10514 int err, i;
10515 bool prev_enabled = rdev->wiphy.wowlan_config;
10516 bool regular = false;
10517
10518 if (!wowlan)
10519 return -EOPNOTSUPP;
10520
10521 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10522 cfg80211_rdev_free_wowlan(rdev);
10523 rdev->wiphy.wowlan_config = NULL;
10524 goto set_wakeup;
10525 }
10526
10527 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10528 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10529 nl80211_wowlan_policy, info->extack);
10530 if (err)
10531 return err;
10532
10533 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10534 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10535 return -EINVAL;
10536 new_triggers.any = true;
10537 }
10538
10539 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10540 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10541 return -EINVAL;
10542 new_triggers.disconnect = true;
10543 regular = true;
10544 }
10545
10546 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10547 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10548 return -EINVAL;
10549 new_triggers.magic_pkt = true;
10550 regular = true;
10551 }
10552
10553 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10554 return -EINVAL;
10555
10556 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10557 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10558 return -EINVAL;
10559 new_triggers.gtk_rekey_failure = true;
10560 regular = true;
10561 }
10562
10563 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10564 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10565 return -EINVAL;
10566 new_triggers.eap_identity_req = true;
10567 regular = true;
10568 }
10569
10570 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10571 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10572 return -EINVAL;
10573 new_triggers.four_way_handshake = true;
10574 regular = true;
10575 }
10576
10577 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10578 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10579 return -EINVAL;
10580 new_triggers.rfkill_release = true;
10581 regular = true;
10582 }
10583
10584 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10585 struct nlattr *pat;
10586 int n_patterns = 0;
10587 int rem, pat_len, mask_len, pkt_offset;
10588 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10589
10590 regular = true;
10591
10592 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10593 rem)
10594 n_patterns++;
10595 if (n_patterns > wowlan->n_patterns)
10596 return -EINVAL;
10597
10598 new_triggers.patterns = kcalloc(n_patterns,
10599 sizeof(new_triggers.patterns[0]),
10600 GFP_KERNEL);
10601 if (!new_triggers.patterns)
10602 return -ENOMEM;
10603
10604 new_triggers.n_patterns = n_patterns;
10605 i = 0;
10606
10607 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10608 rem) {
10609 u8 *mask_pat;
10610
10611 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10612 nl80211_packet_pattern_policy,
10613 info->extack);
10614 err = -EINVAL;
10615 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10616 !pat_tb[NL80211_PKTPAT_PATTERN])
10617 goto error;
10618 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10619 mask_len = DIV_ROUND_UP(pat_len, 8);
10620 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10621 goto error;
10622 if (pat_len > wowlan->pattern_max_len ||
10623 pat_len < wowlan->pattern_min_len)
10624 goto error;
10625
10626 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10627 pkt_offset = 0;
10628 else
10629 pkt_offset = nla_get_u32(
10630 pat_tb[NL80211_PKTPAT_OFFSET]);
10631 if (pkt_offset > wowlan->max_pkt_offset)
10632 goto error;
10633 new_triggers.patterns[i].pkt_offset = pkt_offset;
10634
10635 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10636 if (!mask_pat) {
10637 err = -ENOMEM;
10638 goto error;
10639 }
10640 new_triggers.patterns[i].mask = mask_pat;
10641 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10642 mask_len);
10643 mask_pat += mask_len;
10644 new_triggers.patterns[i].pattern = mask_pat;
10645 new_triggers.patterns[i].pattern_len = pat_len;
10646 memcpy(mask_pat,
10647 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10648 pat_len);
10649 i++;
10650 }
10651 }
10652
10653 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10654 regular = true;
10655 err = nl80211_parse_wowlan_tcp(
10656 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10657 &new_triggers);
10658 if (err)
10659 goto error;
10660 }
10661
10662 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10663 regular = true;
10664 err = nl80211_parse_wowlan_nd(
10665 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10666 &new_triggers);
10667 if (err)
10668 goto error;
10669 }
10670
10671 /* The 'any' trigger means the device continues operating more or less
10672 * as in its normal operation mode and wakes up the host on most of the
10673 * normal interrupts (like packet RX, ...)
10674 * It therefore makes little sense to combine with the more constrained
10675 * wakeup trigger modes.
10676 */
10677 if (new_triggers.any && regular) {
10678 err = -EINVAL;
10679 goto error;
10680 }
10681
10682 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10683 if (!ntrig) {
10684 err = -ENOMEM;
10685 goto error;
10686 }
10687 cfg80211_rdev_free_wowlan(rdev);
10688 rdev->wiphy.wowlan_config = ntrig;
10689
10690 set_wakeup:
10691 if (rdev->ops->set_wakeup &&
10692 prev_enabled != !!rdev->wiphy.wowlan_config)
10693 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10694
10695 return 0;
10696 error:
10697 for (i = 0; i < new_triggers.n_patterns; i++)
10698 kfree(new_triggers.patterns[i].mask);
10699 kfree(new_triggers.patterns);
10700 if (new_triggers.tcp && new_triggers.tcp->sock)
10701 sock_release(new_triggers.tcp->sock);
10702 kfree(new_triggers.tcp);
10703 kfree(new_triggers.nd_config);
10704 return err;
10705 }
10706 #endif
10707
10708 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10709 struct cfg80211_registered_device *rdev)
10710 {
10711 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10712 int i, j, pat_len;
10713 struct cfg80211_coalesce_rules *rule;
10714
10715 if (!rdev->coalesce->n_rules)
10716 return 0;
10717
10718 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10719 if (!nl_rules)
10720 return -ENOBUFS;
10721
10722 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10723 nl_rule = nla_nest_start(msg, i + 1);
10724 if (!nl_rule)
10725 return -ENOBUFS;
10726
10727 rule = &rdev->coalesce->rules[i];
10728 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10729 rule->delay))
10730 return -ENOBUFS;
10731
10732 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10733 rule->condition))
10734 return -ENOBUFS;
10735
10736 nl_pats = nla_nest_start(msg,
10737 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10738 if (!nl_pats)
10739 return -ENOBUFS;
10740
10741 for (j = 0; j < rule->n_patterns; j++) {
10742 nl_pat = nla_nest_start(msg, j + 1);
10743 if (!nl_pat)
10744 return -ENOBUFS;
10745 pat_len = rule->patterns[j].pattern_len;
10746 if (nla_put(msg, NL80211_PKTPAT_MASK,
10747 DIV_ROUND_UP(pat_len, 8),
10748 rule->patterns[j].mask) ||
10749 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10750 rule->patterns[j].pattern) ||
10751 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10752 rule->patterns[j].pkt_offset))
10753 return -ENOBUFS;
10754 nla_nest_end(msg, nl_pat);
10755 }
10756 nla_nest_end(msg, nl_pats);
10757 nla_nest_end(msg, nl_rule);
10758 }
10759 nla_nest_end(msg, nl_rules);
10760
10761 return 0;
10762 }
10763
10764 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10765 {
10766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10767 struct sk_buff *msg;
10768 void *hdr;
10769
10770 if (!rdev->wiphy.coalesce)
10771 return -EOPNOTSUPP;
10772
10773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10774 if (!msg)
10775 return -ENOMEM;
10776
10777 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10778 NL80211_CMD_GET_COALESCE);
10779 if (!hdr)
10780 goto nla_put_failure;
10781
10782 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10783 goto nla_put_failure;
10784
10785 genlmsg_end(msg, hdr);
10786 return genlmsg_reply(msg, info);
10787
10788 nla_put_failure:
10789 nlmsg_free(msg);
10790 return -ENOBUFS;
10791 }
10792
10793 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10794 {
10795 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10796 int i, j;
10797 struct cfg80211_coalesce_rules *rule;
10798
10799 if (!coalesce)
10800 return;
10801
10802 for (i = 0; i < coalesce->n_rules; i++) {
10803 rule = &coalesce->rules[i];
10804 for (j = 0; j < rule->n_patterns; j++)
10805 kfree(rule->patterns[j].mask);
10806 kfree(rule->patterns);
10807 }
10808 kfree(coalesce->rules);
10809 kfree(coalesce);
10810 rdev->coalesce = NULL;
10811 }
10812
10813 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10814 struct nlattr *rule,
10815 struct cfg80211_coalesce_rules *new_rule)
10816 {
10817 int err, i;
10818 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10819 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10820 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10821 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10822
10823 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10824 nl80211_coalesce_policy, NULL);
10825 if (err)
10826 return err;
10827
10828 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10829 new_rule->delay =
10830 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10831 if (new_rule->delay > coalesce->max_delay)
10832 return -EINVAL;
10833
10834 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10835 new_rule->condition =
10836 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10837 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10838 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10839 return -EINVAL;
10840
10841 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10842 return -EINVAL;
10843
10844 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10845 rem)
10846 n_patterns++;
10847 if (n_patterns > coalesce->n_patterns)
10848 return -EINVAL;
10849
10850 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10851 GFP_KERNEL);
10852 if (!new_rule->patterns)
10853 return -ENOMEM;
10854
10855 new_rule->n_patterns = n_patterns;
10856 i = 0;
10857
10858 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10859 rem) {
10860 u8 *mask_pat;
10861
10862 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10863 nl80211_packet_pattern_policy, NULL);
10864 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10865 !pat_tb[NL80211_PKTPAT_PATTERN])
10866 return -EINVAL;
10867 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10868 mask_len = DIV_ROUND_UP(pat_len, 8);
10869 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10870 return -EINVAL;
10871 if (pat_len > coalesce->pattern_max_len ||
10872 pat_len < coalesce->pattern_min_len)
10873 return -EINVAL;
10874
10875 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10876 pkt_offset = 0;
10877 else
10878 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10879 if (pkt_offset > coalesce->max_pkt_offset)
10880 return -EINVAL;
10881 new_rule->patterns[i].pkt_offset = pkt_offset;
10882
10883 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10884 if (!mask_pat)
10885 return -ENOMEM;
10886
10887 new_rule->patterns[i].mask = mask_pat;
10888 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10889 mask_len);
10890
10891 mask_pat += mask_len;
10892 new_rule->patterns[i].pattern = mask_pat;
10893 new_rule->patterns[i].pattern_len = pat_len;
10894 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10895 pat_len);
10896 i++;
10897 }
10898
10899 return 0;
10900 }
10901
10902 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10903 {
10904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10905 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10906 struct cfg80211_coalesce new_coalesce = {};
10907 struct cfg80211_coalesce *n_coalesce;
10908 int err, rem_rule, n_rules = 0, i, j;
10909 struct nlattr *rule;
10910 struct cfg80211_coalesce_rules *tmp_rule;
10911
10912 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10913 return -EOPNOTSUPP;
10914
10915 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10916 cfg80211_rdev_free_coalesce(rdev);
10917 rdev_set_coalesce(rdev, NULL);
10918 return 0;
10919 }
10920
10921 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10922 rem_rule)
10923 n_rules++;
10924 if (n_rules > coalesce->n_rules)
10925 return -EINVAL;
10926
10927 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10928 GFP_KERNEL);
10929 if (!new_coalesce.rules)
10930 return -ENOMEM;
10931
10932 new_coalesce.n_rules = n_rules;
10933 i = 0;
10934
10935 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10936 rem_rule) {
10937 err = nl80211_parse_coalesce_rule(rdev, rule,
10938 &new_coalesce.rules[i]);
10939 if (err)
10940 goto error;
10941
10942 i++;
10943 }
10944
10945 err = rdev_set_coalesce(rdev, &new_coalesce);
10946 if (err)
10947 goto error;
10948
10949 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10950 if (!n_coalesce) {
10951 err = -ENOMEM;
10952 goto error;
10953 }
10954 cfg80211_rdev_free_coalesce(rdev);
10955 rdev->coalesce = n_coalesce;
10956
10957 return 0;
10958 error:
10959 for (i = 0; i < new_coalesce.n_rules; i++) {
10960 tmp_rule = &new_coalesce.rules[i];
10961 for (j = 0; j < tmp_rule->n_patterns; j++)
10962 kfree(tmp_rule->patterns[j].mask);
10963 kfree(tmp_rule->patterns);
10964 }
10965 kfree(new_coalesce.rules);
10966
10967 return err;
10968 }
10969
10970 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10971 {
10972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10973 struct net_device *dev = info->user_ptr[1];
10974 struct wireless_dev *wdev = dev->ieee80211_ptr;
10975 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10976 struct cfg80211_gtk_rekey_data rekey_data;
10977 int err;
10978
10979 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10980 return -EINVAL;
10981
10982 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10983 info->attrs[NL80211_ATTR_REKEY_DATA],
10984 nl80211_rekey_policy, info->extack);
10985 if (err)
10986 return err;
10987
10988 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10989 !tb[NL80211_REKEY_DATA_KCK])
10990 return -EINVAL;
10991 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10992 return -ERANGE;
10993 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10994 return -ERANGE;
10995 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10996 return -ERANGE;
10997
10998 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10999 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11000 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11001
11002 wdev_lock(wdev);
11003 if (!wdev->current_bss) {
11004 err = -ENOTCONN;
11005 goto out;
11006 }
11007
11008 if (!rdev->ops->set_rekey_data) {
11009 err = -EOPNOTSUPP;
11010 goto out;
11011 }
11012
11013 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11014 out:
11015 wdev_unlock(wdev);
11016 return err;
11017 }
11018
11019 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11020 struct genl_info *info)
11021 {
11022 struct net_device *dev = info->user_ptr[1];
11023 struct wireless_dev *wdev = dev->ieee80211_ptr;
11024
11025 if (wdev->iftype != NL80211_IFTYPE_AP &&
11026 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11027 return -EINVAL;
11028
11029 if (wdev->ap_unexpected_nlportid)
11030 return -EBUSY;
11031
11032 wdev->ap_unexpected_nlportid = info->snd_portid;
11033 return 0;
11034 }
11035
11036 static int nl80211_probe_client(struct sk_buff *skb,
11037 struct genl_info *info)
11038 {
11039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11040 struct net_device *dev = info->user_ptr[1];
11041 struct wireless_dev *wdev = dev->ieee80211_ptr;
11042 struct sk_buff *msg;
11043 void *hdr;
11044 const u8 *addr;
11045 u64 cookie;
11046 int err;
11047
11048 if (wdev->iftype != NL80211_IFTYPE_AP &&
11049 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11050 return -EOPNOTSUPP;
11051
11052 if (!info->attrs[NL80211_ATTR_MAC])
11053 return -EINVAL;
11054
11055 if (!rdev->ops->probe_client)
11056 return -EOPNOTSUPP;
11057
11058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11059 if (!msg)
11060 return -ENOMEM;
11061
11062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11063 NL80211_CMD_PROBE_CLIENT);
11064 if (!hdr) {
11065 err = -ENOBUFS;
11066 goto free_msg;
11067 }
11068
11069 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11070
11071 err = rdev_probe_client(rdev, dev, addr, &cookie);
11072 if (err)
11073 goto free_msg;
11074
11075 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11076 NL80211_ATTR_PAD))
11077 goto nla_put_failure;
11078
11079 genlmsg_end(msg, hdr);
11080
11081 return genlmsg_reply(msg, info);
11082
11083 nla_put_failure:
11084 err = -ENOBUFS;
11085 free_msg:
11086 nlmsg_free(msg);
11087 return err;
11088 }
11089
11090 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11091 {
11092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11093 struct cfg80211_beacon_registration *reg, *nreg;
11094 int rv;
11095
11096 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11097 return -EOPNOTSUPP;
11098
11099 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11100 if (!nreg)
11101 return -ENOMEM;
11102
11103 /* First, check if already registered. */
11104 spin_lock_bh(&rdev->beacon_registrations_lock);
11105 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11106 if (reg->nlportid == info->snd_portid) {
11107 rv = -EALREADY;
11108 goto out_err;
11109 }
11110 }
11111 /* Add it to the list */
11112 nreg->nlportid = info->snd_portid;
11113 list_add(&nreg->list, &rdev->beacon_registrations);
11114
11115 spin_unlock_bh(&rdev->beacon_registrations_lock);
11116
11117 return 0;
11118 out_err:
11119 spin_unlock_bh(&rdev->beacon_registrations_lock);
11120 kfree(nreg);
11121 return rv;
11122 }
11123
11124 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11125 {
11126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11127 struct wireless_dev *wdev = info->user_ptr[1];
11128 int err;
11129
11130 if (!rdev->ops->start_p2p_device)
11131 return -EOPNOTSUPP;
11132
11133 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11134 return -EOPNOTSUPP;
11135
11136 if (wdev_running(wdev))
11137 return 0;
11138
11139 if (rfkill_blocked(rdev->rfkill))
11140 return -ERFKILL;
11141
11142 err = rdev_start_p2p_device(rdev, wdev);
11143 if (err)
11144 return err;
11145
11146 wdev->is_running = true;
11147 rdev->opencount++;
11148
11149 return 0;
11150 }
11151
11152 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11153 {
11154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11155 struct wireless_dev *wdev = info->user_ptr[1];
11156
11157 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11158 return -EOPNOTSUPP;
11159
11160 if (!rdev->ops->stop_p2p_device)
11161 return -EOPNOTSUPP;
11162
11163 cfg80211_stop_p2p_device(rdev, wdev);
11164
11165 return 0;
11166 }
11167
11168 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11169 {
11170 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11171 struct wireless_dev *wdev = info->user_ptr[1];
11172 struct cfg80211_nan_conf conf = {};
11173 int err;
11174
11175 if (wdev->iftype != NL80211_IFTYPE_NAN)
11176 return -EOPNOTSUPP;
11177
11178 if (wdev_running(wdev))
11179 return -EEXIST;
11180
11181 if (rfkill_blocked(rdev->rfkill))
11182 return -ERFKILL;
11183
11184 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11185 return -EINVAL;
11186
11187 conf.master_pref =
11188 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11189 if (!conf.master_pref)
11190 return -EINVAL;
11191
11192 if (info->attrs[NL80211_ATTR_BANDS]) {
11193 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11194
11195 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11196 return -EOPNOTSUPP;
11197
11198 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11199 return -EINVAL;
11200
11201 conf.bands = bands;
11202 }
11203
11204 err = rdev_start_nan(rdev, wdev, &conf);
11205 if (err)
11206 return err;
11207
11208 wdev->is_running = true;
11209 rdev->opencount++;
11210
11211 return 0;
11212 }
11213
11214 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11215 {
11216 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11217 struct wireless_dev *wdev = info->user_ptr[1];
11218
11219 if (wdev->iftype != NL80211_IFTYPE_NAN)
11220 return -EOPNOTSUPP;
11221
11222 cfg80211_stop_nan(rdev, wdev);
11223
11224 return 0;
11225 }
11226
11227 static int validate_nan_filter(struct nlattr *filter_attr)
11228 {
11229 struct nlattr *attr;
11230 int len = 0, n_entries = 0, rem;
11231
11232 nla_for_each_nested(attr, filter_attr, rem) {
11233 len += nla_len(attr);
11234 n_entries++;
11235 }
11236
11237 if (len >= U8_MAX)
11238 return -EINVAL;
11239
11240 return n_entries;
11241 }
11242
11243 static int handle_nan_filter(struct nlattr *attr_filter,
11244 struct cfg80211_nan_func *func,
11245 bool tx)
11246 {
11247 struct nlattr *attr;
11248 int n_entries, rem, i;
11249 struct cfg80211_nan_func_filter *filter;
11250
11251 n_entries = validate_nan_filter(attr_filter);
11252 if (n_entries < 0)
11253 return n_entries;
11254
11255 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11256
11257 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11258 if (!filter)
11259 return -ENOMEM;
11260
11261 i = 0;
11262 nla_for_each_nested(attr, attr_filter, rem) {
11263 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11264 filter[i].len = nla_len(attr);
11265 i++;
11266 }
11267 if (tx) {
11268 func->num_tx_filters = n_entries;
11269 func->tx_filters = filter;
11270 } else {
11271 func->num_rx_filters = n_entries;
11272 func->rx_filters = filter;
11273 }
11274
11275 return 0;
11276 }
11277
11278 static int nl80211_nan_add_func(struct sk_buff *skb,
11279 struct genl_info *info)
11280 {
11281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11282 struct wireless_dev *wdev = info->user_ptr[1];
11283 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11284 struct cfg80211_nan_func *func;
11285 struct sk_buff *msg = NULL;
11286 void *hdr = NULL;
11287 int err = 0;
11288
11289 if (wdev->iftype != NL80211_IFTYPE_NAN)
11290 return -EOPNOTSUPP;
11291
11292 if (!wdev_running(wdev))
11293 return -ENOTCONN;
11294
11295 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11296 return -EINVAL;
11297
11298 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11299 info->attrs[NL80211_ATTR_NAN_FUNC],
11300 nl80211_nan_func_policy, info->extack);
11301 if (err)
11302 return err;
11303
11304 func = kzalloc(sizeof(*func), GFP_KERNEL);
11305 if (!func)
11306 return -ENOMEM;
11307
11308 func->cookie = wdev->wiphy->cookie_counter++;
11309
11310 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11311 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11312 err = -EINVAL;
11313 goto out;
11314 }
11315
11316
11317 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11318
11319 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11320 err = -EINVAL;
11321 goto out;
11322 }
11323
11324 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11325 sizeof(func->service_id));
11326
11327 func->close_range =
11328 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11329
11330 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11331 func->serv_spec_info_len =
11332 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11333 func->serv_spec_info =
11334 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11335 func->serv_spec_info_len,
11336 GFP_KERNEL);
11337 if (!func->serv_spec_info) {
11338 err = -ENOMEM;
11339 goto out;
11340 }
11341 }
11342
11343 if (tb[NL80211_NAN_FUNC_TTL])
11344 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11345
11346 switch (func->type) {
11347 case NL80211_NAN_FUNC_PUBLISH:
11348 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11349 err = -EINVAL;
11350 goto out;
11351 }
11352
11353 func->publish_type =
11354 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11355 func->publish_bcast =
11356 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11357
11358 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11359 func->publish_bcast) {
11360 err = -EINVAL;
11361 goto out;
11362 }
11363 break;
11364 case NL80211_NAN_FUNC_SUBSCRIBE:
11365 func->subscribe_active =
11366 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11367 break;
11368 case NL80211_NAN_FUNC_FOLLOW_UP:
11369 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11370 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11371 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11372 err = -EINVAL;
11373 goto out;
11374 }
11375
11376 func->followup_id =
11377 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11378 func->followup_reqid =
11379 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11380 memcpy(func->followup_dest.addr,
11381 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11382 sizeof(func->followup_dest.addr));
11383 if (func->ttl) {
11384 err = -EINVAL;
11385 goto out;
11386 }
11387 break;
11388 default:
11389 err = -EINVAL;
11390 goto out;
11391 }
11392
11393 if (tb[NL80211_NAN_FUNC_SRF]) {
11394 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11395
11396 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11397 tb[NL80211_NAN_FUNC_SRF],
11398 nl80211_nan_srf_policy, info->extack);
11399 if (err)
11400 goto out;
11401
11402 func->srf_include =
11403 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11404
11405 if (srf_tb[NL80211_NAN_SRF_BF]) {
11406 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11407 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11408 err = -EINVAL;
11409 goto out;
11410 }
11411
11412 func->srf_bf_len =
11413 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11414 func->srf_bf =
11415 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11416 func->srf_bf_len, GFP_KERNEL);
11417 if (!func->srf_bf) {
11418 err = -ENOMEM;
11419 goto out;
11420 }
11421
11422 func->srf_bf_idx =
11423 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11424 } else {
11425 struct nlattr *attr, *mac_attr =
11426 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11427 int n_entries, rem, i = 0;
11428
11429 if (!mac_attr) {
11430 err = -EINVAL;
11431 goto out;
11432 }
11433
11434 n_entries = validate_acl_mac_addrs(mac_attr);
11435 if (n_entries <= 0) {
11436 err = -EINVAL;
11437 goto out;
11438 }
11439
11440 func->srf_num_macs = n_entries;
11441 func->srf_macs =
11442 kzalloc(sizeof(*func->srf_macs) * n_entries,
11443 GFP_KERNEL);
11444 if (!func->srf_macs) {
11445 err = -ENOMEM;
11446 goto out;
11447 }
11448
11449 nla_for_each_nested(attr, mac_attr, rem)
11450 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11451 sizeof(*func->srf_macs));
11452 }
11453 }
11454
11455 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11456 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11457 func, true);
11458 if (err)
11459 goto out;
11460 }
11461
11462 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11463 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11464 func, false);
11465 if (err)
11466 goto out;
11467 }
11468
11469 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11470 if (!msg) {
11471 err = -ENOMEM;
11472 goto out;
11473 }
11474
11475 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11476 NL80211_CMD_ADD_NAN_FUNCTION);
11477 /* This can't really happen - we just allocated 4KB */
11478 if (WARN_ON(!hdr)) {
11479 err = -ENOMEM;
11480 goto out;
11481 }
11482
11483 err = rdev_add_nan_func(rdev, wdev, func);
11484 out:
11485 if (err < 0) {
11486 cfg80211_free_nan_func(func);
11487 nlmsg_free(msg);
11488 return err;
11489 }
11490
11491 /* propagate the instance id and cookie to userspace */
11492 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11493 NL80211_ATTR_PAD))
11494 goto nla_put_failure;
11495
11496 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11497 if (!func_attr)
11498 goto nla_put_failure;
11499
11500 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11501 func->instance_id))
11502 goto nla_put_failure;
11503
11504 nla_nest_end(msg, func_attr);
11505
11506 genlmsg_end(msg, hdr);
11507 return genlmsg_reply(msg, info);
11508
11509 nla_put_failure:
11510 nlmsg_free(msg);
11511 return -ENOBUFS;
11512 }
11513
11514 static int nl80211_nan_del_func(struct sk_buff *skb,
11515 struct genl_info *info)
11516 {
11517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11518 struct wireless_dev *wdev = info->user_ptr[1];
11519 u64 cookie;
11520
11521 if (wdev->iftype != NL80211_IFTYPE_NAN)
11522 return -EOPNOTSUPP;
11523
11524 if (!wdev_running(wdev))
11525 return -ENOTCONN;
11526
11527 if (!info->attrs[NL80211_ATTR_COOKIE])
11528 return -EINVAL;
11529
11530 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11531
11532 rdev_del_nan_func(rdev, wdev, cookie);
11533
11534 return 0;
11535 }
11536
11537 static int nl80211_nan_change_config(struct sk_buff *skb,
11538 struct genl_info *info)
11539 {
11540 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11541 struct wireless_dev *wdev = info->user_ptr[1];
11542 struct cfg80211_nan_conf conf = {};
11543 u32 changed = 0;
11544
11545 if (wdev->iftype != NL80211_IFTYPE_NAN)
11546 return -EOPNOTSUPP;
11547
11548 if (!wdev_running(wdev))
11549 return -ENOTCONN;
11550
11551 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11552 conf.master_pref =
11553 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11554 if (conf.master_pref <= 1 || conf.master_pref == 255)
11555 return -EINVAL;
11556
11557 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11558 }
11559
11560 if (info->attrs[NL80211_ATTR_BANDS]) {
11561 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11562
11563 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11564 return -EOPNOTSUPP;
11565
11566 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11567 return -EINVAL;
11568
11569 conf.bands = bands;
11570 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11571 }
11572
11573 if (!changed)
11574 return -EINVAL;
11575
11576 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11577 }
11578
11579 void cfg80211_nan_match(struct wireless_dev *wdev,
11580 struct cfg80211_nan_match_params *match, gfp_t gfp)
11581 {
11582 struct wiphy *wiphy = wdev->wiphy;
11583 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11584 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11585 struct sk_buff *msg;
11586 void *hdr;
11587
11588 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11589 return;
11590
11591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11592 if (!msg)
11593 return;
11594
11595 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11596 if (!hdr) {
11597 nlmsg_free(msg);
11598 return;
11599 }
11600
11601 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11602 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11603 wdev->netdev->ifindex)) ||
11604 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11605 NL80211_ATTR_PAD))
11606 goto nla_put_failure;
11607
11608 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11609 NL80211_ATTR_PAD) ||
11610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11611 goto nla_put_failure;
11612
11613 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11614 if (!match_attr)
11615 goto nla_put_failure;
11616
11617 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11618 if (!local_func_attr)
11619 goto nla_put_failure;
11620
11621 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11622 goto nla_put_failure;
11623
11624 nla_nest_end(msg, local_func_attr);
11625
11626 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11627 if (!peer_func_attr)
11628 goto nla_put_failure;
11629
11630 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11631 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11632 goto nla_put_failure;
11633
11634 if (match->info && match->info_len &&
11635 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11636 match->info))
11637 goto nla_put_failure;
11638
11639 nla_nest_end(msg, peer_func_attr);
11640 nla_nest_end(msg, match_attr);
11641 genlmsg_end(msg, hdr);
11642
11643 if (!wdev->owner_nlportid)
11644 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11645 msg, 0, NL80211_MCGRP_NAN, gfp);
11646 else
11647 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11648 wdev->owner_nlportid);
11649
11650 return;
11651
11652 nla_put_failure:
11653 nlmsg_free(msg);
11654 }
11655 EXPORT_SYMBOL(cfg80211_nan_match);
11656
11657 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11658 u8 inst_id,
11659 enum nl80211_nan_func_term_reason reason,
11660 u64 cookie, gfp_t gfp)
11661 {
11662 struct wiphy *wiphy = wdev->wiphy;
11663 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11664 struct sk_buff *msg;
11665 struct nlattr *func_attr;
11666 void *hdr;
11667
11668 if (WARN_ON(!inst_id))
11669 return;
11670
11671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11672 if (!msg)
11673 return;
11674
11675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11676 if (!hdr) {
11677 nlmsg_free(msg);
11678 return;
11679 }
11680
11681 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11682 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11683 wdev->netdev->ifindex)) ||
11684 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11685 NL80211_ATTR_PAD))
11686 goto nla_put_failure;
11687
11688 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11689 NL80211_ATTR_PAD))
11690 goto nla_put_failure;
11691
11692 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11693 if (!func_attr)
11694 goto nla_put_failure;
11695
11696 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11697 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11698 goto nla_put_failure;
11699
11700 nla_nest_end(msg, func_attr);
11701 genlmsg_end(msg, hdr);
11702
11703 if (!wdev->owner_nlportid)
11704 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11705 msg, 0, NL80211_MCGRP_NAN, gfp);
11706 else
11707 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11708 wdev->owner_nlportid);
11709
11710 return;
11711
11712 nla_put_failure:
11713 nlmsg_free(msg);
11714 }
11715 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11716
11717 static int nl80211_get_protocol_features(struct sk_buff *skb,
11718 struct genl_info *info)
11719 {
11720 void *hdr;
11721 struct sk_buff *msg;
11722
11723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11724 if (!msg)
11725 return -ENOMEM;
11726
11727 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11728 NL80211_CMD_GET_PROTOCOL_FEATURES);
11729 if (!hdr)
11730 goto nla_put_failure;
11731
11732 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11733 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11734 goto nla_put_failure;
11735
11736 genlmsg_end(msg, hdr);
11737 return genlmsg_reply(msg, info);
11738
11739 nla_put_failure:
11740 kfree_skb(msg);
11741 return -ENOBUFS;
11742 }
11743
11744 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11745 {
11746 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11747 struct cfg80211_update_ft_ies_params ft_params;
11748 struct net_device *dev = info->user_ptr[1];
11749
11750 if (!rdev->ops->update_ft_ies)
11751 return -EOPNOTSUPP;
11752
11753 if (!info->attrs[NL80211_ATTR_MDID] ||
11754 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11755 return -EINVAL;
11756
11757 memset(&ft_params, 0, sizeof(ft_params));
11758 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11759 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11760 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11761
11762 return rdev_update_ft_ies(rdev, dev, &ft_params);
11763 }
11764
11765 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11766 struct genl_info *info)
11767 {
11768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11769 struct wireless_dev *wdev = info->user_ptr[1];
11770 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11771 u16 duration;
11772 int ret;
11773
11774 if (!rdev->ops->crit_proto_start)
11775 return -EOPNOTSUPP;
11776
11777 if (WARN_ON(!rdev->ops->crit_proto_stop))
11778 return -EINVAL;
11779
11780 if (rdev->crit_proto_nlportid)
11781 return -EBUSY;
11782
11783 /* determine protocol if provided */
11784 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11785 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11786
11787 if (proto >= NUM_NL80211_CRIT_PROTO)
11788 return -EINVAL;
11789
11790 /* timeout must be provided */
11791 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11792 return -EINVAL;
11793
11794 duration =
11795 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11796
11797 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11798 return -ERANGE;
11799
11800 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11801 if (!ret)
11802 rdev->crit_proto_nlportid = info->snd_portid;
11803
11804 return ret;
11805 }
11806
11807 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11808 struct genl_info *info)
11809 {
11810 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11811 struct wireless_dev *wdev = info->user_ptr[1];
11812
11813 if (!rdev->ops->crit_proto_stop)
11814 return -EOPNOTSUPP;
11815
11816 if (rdev->crit_proto_nlportid) {
11817 rdev->crit_proto_nlportid = 0;
11818 rdev_crit_proto_stop(rdev, wdev);
11819 }
11820 return 0;
11821 }
11822
11823 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11824 {
11825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11826 struct wireless_dev *wdev =
11827 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11828 int i, err;
11829 u32 vid, subcmd;
11830
11831 if (!rdev->wiphy.vendor_commands)
11832 return -EOPNOTSUPP;
11833
11834 if (IS_ERR(wdev)) {
11835 err = PTR_ERR(wdev);
11836 if (err != -EINVAL)
11837 return err;
11838 wdev = NULL;
11839 } else if (wdev->wiphy != &rdev->wiphy) {
11840 return -EINVAL;
11841 }
11842
11843 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11844 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11845 return -EINVAL;
11846
11847 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11848 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11849 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11850 const struct wiphy_vendor_command *vcmd;
11851 void *data = NULL;
11852 int len = 0;
11853
11854 vcmd = &rdev->wiphy.vendor_commands[i];
11855
11856 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11857 continue;
11858
11859 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11860 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11861 if (!wdev)
11862 return -EINVAL;
11863 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11864 !wdev->netdev)
11865 return -EINVAL;
11866
11867 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11868 if (!wdev_running(wdev))
11869 return -ENETDOWN;
11870 }
11871
11872 if (!vcmd->doit)
11873 return -EOPNOTSUPP;
11874 } else {
11875 wdev = NULL;
11876 }
11877
11878 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11879 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11880 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11881 }
11882
11883 rdev->cur_cmd_info = info;
11884 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11885 data, len);
11886 rdev->cur_cmd_info = NULL;
11887 return err;
11888 }
11889
11890 return -EOPNOTSUPP;
11891 }
11892
11893 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11894 struct netlink_callback *cb,
11895 struct cfg80211_registered_device **rdev,
11896 struct wireless_dev **wdev)
11897 {
11898 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11899 u32 vid, subcmd;
11900 unsigned int i;
11901 int vcmd_idx = -1;
11902 int err;
11903 void *data = NULL;
11904 unsigned int data_len = 0;
11905
11906 if (cb->args[0]) {
11907 /* subtract the 1 again here */
11908 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11909 struct wireless_dev *tmp;
11910
11911 if (!wiphy)
11912 return -ENODEV;
11913 *rdev = wiphy_to_rdev(wiphy);
11914 *wdev = NULL;
11915
11916 if (cb->args[1]) {
11917 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11918 if (tmp->identifier == cb->args[1] - 1) {
11919 *wdev = tmp;
11920 break;
11921 }
11922 }
11923 }
11924
11925 /* keep rtnl locked in successful case */
11926 return 0;
11927 }
11928
11929 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11930 nl80211_fam.maxattr, nl80211_policy, NULL);
11931 if (err)
11932 return err;
11933
11934 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11935 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11936 return -EINVAL;
11937
11938 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11939 if (IS_ERR(*wdev))
11940 *wdev = NULL;
11941
11942 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11943 if (IS_ERR(*rdev))
11944 return PTR_ERR(*rdev);
11945
11946 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11947 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11948
11949 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11950 const struct wiphy_vendor_command *vcmd;
11951
11952 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11953
11954 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11955 continue;
11956
11957 if (!vcmd->dumpit)
11958 return -EOPNOTSUPP;
11959
11960 vcmd_idx = i;
11961 break;
11962 }
11963
11964 if (vcmd_idx < 0)
11965 return -EOPNOTSUPP;
11966
11967 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11968 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11969 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11970 }
11971
11972 /* 0 is the first index - add 1 to parse only once */
11973 cb->args[0] = (*rdev)->wiphy_idx + 1;
11974 /* add 1 to know if it was NULL */
11975 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11976 cb->args[2] = vcmd_idx;
11977 cb->args[3] = (unsigned long)data;
11978 cb->args[4] = data_len;
11979
11980 /* keep rtnl locked in successful case */
11981 return 0;
11982 }
11983
11984 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11985 struct netlink_callback *cb)
11986 {
11987 struct cfg80211_registered_device *rdev;
11988 struct wireless_dev *wdev;
11989 unsigned int vcmd_idx;
11990 const struct wiphy_vendor_command *vcmd;
11991 void *data;
11992 int data_len;
11993 int err;
11994 struct nlattr *vendor_data;
11995
11996 rtnl_lock();
11997 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11998 if (err)
11999 goto out;
12000
12001 vcmd_idx = cb->args[2];
12002 data = (void *)cb->args[3];
12003 data_len = cb->args[4];
12004 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12005
12006 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12007 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12008 if (!wdev) {
12009 err = -EINVAL;
12010 goto out;
12011 }
12012 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12013 !wdev->netdev) {
12014 err = -EINVAL;
12015 goto out;
12016 }
12017
12018 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12019 if (!wdev_running(wdev)) {
12020 err = -ENETDOWN;
12021 goto out;
12022 }
12023 }
12024 }
12025
12026 while (1) {
12027 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12028 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12029 NL80211_CMD_VENDOR);
12030 if (!hdr)
12031 break;
12032
12033 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12034 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12035 wdev_id(wdev),
12036 NL80211_ATTR_PAD))) {
12037 genlmsg_cancel(skb, hdr);
12038 break;
12039 }
12040
12041 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12042 if (!vendor_data) {
12043 genlmsg_cancel(skb, hdr);
12044 break;
12045 }
12046
12047 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12048 (unsigned long *)&cb->args[5]);
12049 nla_nest_end(skb, vendor_data);
12050
12051 if (err == -ENOBUFS || err == -ENOENT) {
12052 genlmsg_cancel(skb, hdr);
12053 break;
12054 } else if (err) {
12055 genlmsg_cancel(skb, hdr);
12056 goto out;
12057 }
12058
12059 genlmsg_end(skb, hdr);
12060 }
12061
12062 err = skb->len;
12063 out:
12064 rtnl_unlock();
12065 return err;
12066 }
12067
12068 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12069 enum nl80211_commands cmd,
12070 enum nl80211_attrs attr,
12071 int approxlen)
12072 {
12073 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12074
12075 if (WARN_ON(!rdev->cur_cmd_info))
12076 return NULL;
12077
12078 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12079 rdev->cur_cmd_info->snd_portid,
12080 rdev->cur_cmd_info->snd_seq,
12081 cmd, attr, NULL, GFP_KERNEL);
12082 }
12083 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12084
12085 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12086 {
12087 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12088 void *hdr = ((void **)skb->cb)[1];
12089 struct nlattr *data = ((void **)skb->cb)[2];
12090
12091 /* clear CB data for netlink core to own from now on */
12092 memset(skb->cb, 0, sizeof(skb->cb));
12093
12094 if (WARN_ON(!rdev->cur_cmd_info)) {
12095 kfree_skb(skb);
12096 return -EINVAL;
12097 }
12098
12099 nla_nest_end(skb, data);
12100 genlmsg_end(skb, hdr);
12101 return genlmsg_reply(skb, rdev->cur_cmd_info);
12102 }
12103 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12104
12105 static int nl80211_set_qos_map(struct sk_buff *skb,
12106 struct genl_info *info)
12107 {
12108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12109 struct cfg80211_qos_map *qos_map = NULL;
12110 struct net_device *dev = info->user_ptr[1];
12111 u8 *pos, len, num_des, des_len, des;
12112 int ret;
12113
12114 if (!rdev->ops->set_qos_map)
12115 return -EOPNOTSUPP;
12116
12117 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12118 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12119 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12120
12121 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12122 len > IEEE80211_QOS_MAP_LEN_MAX)
12123 return -EINVAL;
12124
12125 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12126 if (!qos_map)
12127 return -ENOMEM;
12128
12129 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12130 if (num_des) {
12131 des_len = num_des *
12132 sizeof(struct cfg80211_dscp_exception);
12133 memcpy(qos_map->dscp_exception, pos, des_len);
12134 qos_map->num_des = num_des;
12135 for (des = 0; des < num_des; des++) {
12136 if (qos_map->dscp_exception[des].up > 7) {
12137 kfree(qos_map);
12138 return -EINVAL;
12139 }
12140 }
12141 pos += des_len;
12142 }
12143 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12144 }
12145
12146 wdev_lock(dev->ieee80211_ptr);
12147 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12148 if (!ret)
12149 ret = rdev_set_qos_map(rdev, dev, qos_map);
12150 wdev_unlock(dev->ieee80211_ptr);
12151
12152 kfree(qos_map);
12153 return ret;
12154 }
12155
12156 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12157 {
12158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159 struct net_device *dev = info->user_ptr[1];
12160 struct wireless_dev *wdev = dev->ieee80211_ptr;
12161 const u8 *peer;
12162 u8 tsid, up;
12163 u16 admitted_time = 0;
12164 int err;
12165
12166 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12167 return -EOPNOTSUPP;
12168
12169 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12170 !info->attrs[NL80211_ATTR_USER_PRIO])
12171 return -EINVAL;
12172
12173 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12174 if (tsid >= IEEE80211_NUM_TIDS)
12175 return -EINVAL;
12176
12177 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12178 if (up >= IEEE80211_NUM_UPS)
12179 return -EINVAL;
12180
12181 /* WMM uses TIDs 0-7 even for TSPEC */
12182 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12183 /* TODO: handle 802.11 TSPEC/admission control
12184 * need more attributes for that (e.g. BA session requirement);
12185 * change the WMM adminssion test above to allow both then
12186 */
12187 return -EINVAL;
12188 }
12189
12190 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12191
12192 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12193 admitted_time =
12194 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12195 if (!admitted_time)
12196 return -EINVAL;
12197 }
12198
12199 wdev_lock(wdev);
12200 switch (wdev->iftype) {
12201 case NL80211_IFTYPE_STATION:
12202 case NL80211_IFTYPE_P2P_CLIENT:
12203 if (wdev->current_bss)
12204 break;
12205 err = -ENOTCONN;
12206 goto out;
12207 default:
12208 err = -EOPNOTSUPP;
12209 goto out;
12210 }
12211
12212 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12213
12214 out:
12215 wdev_unlock(wdev);
12216 return err;
12217 }
12218
12219 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12220 {
12221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12222 struct net_device *dev = info->user_ptr[1];
12223 struct wireless_dev *wdev = dev->ieee80211_ptr;
12224 const u8 *peer;
12225 u8 tsid;
12226 int err;
12227
12228 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12229 return -EINVAL;
12230
12231 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12232 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12233
12234 wdev_lock(wdev);
12235 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12236 wdev_unlock(wdev);
12237
12238 return err;
12239 }
12240
12241 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12242 struct genl_info *info)
12243 {
12244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12245 struct net_device *dev = info->user_ptr[1];
12246 struct wireless_dev *wdev = dev->ieee80211_ptr;
12247 struct cfg80211_chan_def chandef = {};
12248 const u8 *addr;
12249 u8 oper_class;
12250 int err;
12251
12252 if (!rdev->ops->tdls_channel_switch ||
12253 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12254 return -EOPNOTSUPP;
12255
12256 switch (dev->ieee80211_ptr->iftype) {
12257 case NL80211_IFTYPE_STATION:
12258 case NL80211_IFTYPE_P2P_CLIENT:
12259 break;
12260 default:
12261 return -EOPNOTSUPP;
12262 }
12263
12264 if (!info->attrs[NL80211_ATTR_MAC] ||
12265 !info->attrs[NL80211_ATTR_OPER_CLASS])
12266 return -EINVAL;
12267
12268 err = nl80211_parse_chandef(rdev, info, &chandef);
12269 if (err)
12270 return err;
12271
12272 /*
12273 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12274 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12275 * specification is not defined for them.
12276 */
12277 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12278 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12279 chandef.width != NL80211_CHAN_WIDTH_20)
12280 return -EINVAL;
12281
12282 /* we will be active on the TDLS link */
12283 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12284 wdev->iftype))
12285 return -EINVAL;
12286
12287 /* don't allow switching to DFS channels */
12288 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12289 return -EINVAL;
12290
12291 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12292 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12293
12294 wdev_lock(wdev);
12295 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12296 wdev_unlock(wdev);
12297
12298 return err;
12299 }
12300
12301 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12302 struct genl_info *info)
12303 {
12304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12305 struct net_device *dev = info->user_ptr[1];
12306 struct wireless_dev *wdev = dev->ieee80211_ptr;
12307 const u8 *addr;
12308
12309 if (!rdev->ops->tdls_channel_switch ||
12310 !rdev->ops->tdls_cancel_channel_switch ||
12311 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12312 return -EOPNOTSUPP;
12313
12314 switch (dev->ieee80211_ptr->iftype) {
12315 case NL80211_IFTYPE_STATION:
12316 case NL80211_IFTYPE_P2P_CLIENT:
12317 break;
12318 default:
12319 return -EOPNOTSUPP;
12320 }
12321
12322 if (!info->attrs[NL80211_ATTR_MAC])
12323 return -EINVAL;
12324
12325 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12326
12327 wdev_lock(wdev);
12328 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12329 wdev_unlock(wdev);
12330
12331 return 0;
12332 }
12333
12334 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12335 struct genl_info *info)
12336 {
12337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338 struct net_device *dev = info->user_ptr[1];
12339 struct wireless_dev *wdev = dev->ieee80211_ptr;
12340 const struct nlattr *nla;
12341 bool enabled;
12342
12343 if (!rdev->ops->set_multicast_to_unicast)
12344 return -EOPNOTSUPP;
12345
12346 if (wdev->iftype != NL80211_IFTYPE_AP &&
12347 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12348 return -EOPNOTSUPP;
12349
12350 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12351 enabled = nla_get_flag(nla);
12352
12353 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12354 }
12355
12356 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12357 {
12358 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12359 struct net_device *dev = info->user_ptr[1];
12360 struct wireless_dev *wdev = dev->ieee80211_ptr;
12361 struct cfg80211_pmk_conf pmk_conf = {};
12362 int ret;
12363
12364 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12365 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12366 return -EOPNOTSUPP;
12367
12368 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12369 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12370 return -EOPNOTSUPP;
12371
12372 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12373 return -EINVAL;
12374
12375 wdev_lock(wdev);
12376 if (!wdev->current_bss) {
12377 ret = -ENOTCONN;
12378 goto out;
12379 }
12380
12381 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12382 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12383 ret = -EINVAL;
12384 goto out;
12385 }
12386
12387 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12388 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12389 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12390 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12391 ret = -EINVAL;
12392 goto out;
12393 }
12394
12395 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12396 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12397
12398 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12399 ret = -EINVAL;
12400 goto out;
12401 }
12402
12403 pmk_conf.pmk_r0_name =
12404 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12405 }
12406
12407 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12408 out:
12409 wdev_unlock(wdev);
12410 return ret;
12411 }
12412
12413 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12414 {
12415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12416 struct net_device *dev = info->user_ptr[1];
12417 struct wireless_dev *wdev = dev->ieee80211_ptr;
12418 const u8 *aa;
12419 int ret;
12420
12421 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12422 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12423 return -EOPNOTSUPP;
12424
12425 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12426 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12427 return -EOPNOTSUPP;
12428
12429 if (!info->attrs[NL80211_ATTR_MAC])
12430 return -EINVAL;
12431
12432 wdev_lock(wdev);
12433 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12434 ret = rdev_del_pmk(rdev, dev, aa);
12435 wdev_unlock(wdev);
12436
12437 return ret;
12438 }
12439
12440 #define NL80211_FLAG_NEED_WIPHY 0x01
12441 #define NL80211_FLAG_NEED_NETDEV 0x02
12442 #define NL80211_FLAG_NEED_RTNL 0x04
12443 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12444 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12445 NL80211_FLAG_CHECK_NETDEV_UP)
12446 #define NL80211_FLAG_NEED_WDEV 0x10
12447 /* If a netdev is associated, it must be UP, P2P must be started */
12448 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12449 NL80211_FLAG_CHECK_NETDEV_UP)
12450 #define NL80211_FLAG_CLEAR_SKB 0x20
12451
12452 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12453 struct genl_info *info)
12454 {
12455 struct cfg80211_registered_device *rdev;
12456 struct wireless_dev *wdev;
12457 struct net_device *dev;
12458 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12459
12460 if (rtnl)
12461 rtnl_lock();
12462
12463 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12464 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12465 if (IS_ERR(rdev)) {
12466 if (rtnl)
12467 rtnl_unlock();
12468 return PTR_ERR(rdev);
12469 }
12470 info->user_ptr[0] = rdev;
12471 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12472 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12473 ASSERT_RTNL();
12474
12475 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12476 info->attrs);
12477 if (IS_ERR(wdev)) {
12478 if (rtnl)
12479 rtnl_unlock();
12480 return PTR_ERR(wdev);
12481 }
12482
12483 dev = wdev->netdev;
12484 rdev = wiphy_to_rdev(wdev->wiphy);
12485
12486 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12487 if (!dev) {
12488 if (rtnl)
12489 rtnl_unlock();
12490 return -EINVAL;
12491 }
12492
12493 info->user_ptr[1] = dev;
12494 } else {
12495 info->user_ptr[1] = wdev;
12496 }
12497
12498 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12499 !wdev_running(wdev)) {
12500 if (rtnl)
12501 rtnl_unlock();
12502 return -ENETDOWN;
12503 }
12504
12505 if (dev)
12506 dev_hold(dev);
12507
12508 info->user_ptr[0] = rdev;
12509 }
12510
12511 return 0;
12512 }
12513
12514 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12515 struct genl_info *info)
12516 {
12517 if (info->user_ptr[1]) {
12518 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12519 struct wireless_dev *wdev = info->user_ptr[1];
12520
12521 if (wdev->netdev)
12522 dev_put(wdev->netdev);
12523 } else {
12524 dev_put(info->user_ptr[1]);
12525 }
12526 }
12527
12528 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12529 rtnl_unlock();
12530
12531 /* If needed, clear the netlink message payload from the SKB
12532 * as it might contain key data that shouldn't stick around on
12533 * the heap after the SKB is freed. The netlink message header
12534 * is still needed for further processing, so leave it intact.
12535 */
12536 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12537 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12538
12539 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12540 }
12541 }
12542
12543 static const struct genl_ops nl80211_ops[] = {
12544 {
12545 .cmd = NL80211_CMD_GET_WIPHY,
12546 .doit = nl80211_get_wiphy,
12547 .dumpit = nl80211_dump_wiphy,
12548 .done = nl80211_dump_wiphy_done,
12549 .policy = nl80211_policy,
12550 /* can be retrieved by unprivileged users */
12551 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12552 NL80211_FLAG_NEED_RTNL,
12553 },
12554 {
12555 .cmd = NL80211_CMD_SET_WIPHY,
12556 .doit = nl80211_set_wiphy,
12557 .policy = nl80211_policy,
12558 .flags = GENL_UNS_ADMIN_PERM,
12559 .internal_flags = NL80211_FLAG_NEED_RTNL,
12560 },
12561 {
12562 .cmd = NL80211_CMD_GET_INTERFACE,
12563 .doit = nl80211_get_interface,
12564 .dumpit = nl80211_dump_interface,
12565 .policy = nl80211_policy,
12566 /* can be retrieved by unprivileged users */
12567 .internal_flags = NL80211_FLAG_NEED_WDEV |
12568 NL80211_FLAG_NEED_RTNL,
12569 },
12570 {
12571 .cmd = NL80211_CMD_SET_INTERFACE,
12572 .doit = nl80211_set_interface,
12573 .policy = nl80211_policy,
12574 .flags = GENL_UNS_ADMIN_PERM,
12575 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12576 NL80211_FLAG_NEED_RTNL,
12577 },
12578 {
12579 .cmd = NL80211_CMD_NEW_INTERFACE,
12580 .doit = nl80211_new_interface,
12581 .policy = nl80211_policy,
12582 .flags = GENL_UNS_ADMIN_PERM,
12583 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12584 NL80211_FLAG_NEED_RTNL,
12585 },
12586 {
12587 .cmd = NL80211_CMD_DEL_INTERFACE,
12588 .doit = nl80211_del_interface,
12589 .policy = nl80211_policy,
12590 .flags = GENL_UNS_ADMIN_PERM,
12591 .internal_flags = NL80211_FLAG_NEED_WDEV |
12592 NL80211_FLAG_NEED_RTNL,
12593 },
12594 {
12595 .cmd = NL80211_CMD_GET_KEY,
12596 .doit = nl80211_get_key,
12597 .policy = nl80211_policy,
12598 .flags = GENL_UNS_ADMIN_PERM,
12599 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12600 NL80211_FLAG_NEED_RTNL,
12601 },
12602 {
12603 .cmd = NL80211_CMD_SET_KEY,
12604 .doit = nl80211_set_key,
12605 .policy = nl80211_policy,
12606 .flags = GENL_UNS_ADMIN_PERM,
12607 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12608 NL80211_FLAG_NEED_RTNL |
12609 NL80211_FLAG_CLEAR_SKB,
12610 },
12611 {
12612 .cmd = NL80211_CMD_NEW_KEY,
12613 .doit = nl80211_new_key,
12614 .policy = nl80211_policy,
12615 .flags = GENL_UNS_ADMIN_PERM,
12616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12617 NL80211_FLAG_NEED_RTNL |
12618 NL80211_FLAG_CLEAR_SKB,
12619 },
12620 {
12621 .cmd = NL80211_CMD_DEL_KEY,
12622 .doit = nl80211_del_key,
12623 .policy = nl80211_policy,
12624 .flags = GENL_UNS_ADMIN_PERM,
12625 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12626 NL80211_FLAG_NEED_RTNL,
12627 },
12628 {
12629 .cmd = NL80211_CMD_SET_BEACON,
12630 .policy = nl80211_policy,
12631 .flags = GENL_UNS_ADMIN_PERM,
12632 .doit = nl80211_set_beacon,
12633 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12634 NL80211_FLAG_NEED_RTNL,
12635 },
12636 {
12637 .cmd = NL80211_CMD_START_AP,
12638 .policy = nl80211_policy,
12639 .flags = GENL_UNS_ADMIN_PERM,
12640 .doit = nl80211_start_ap,
12641 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12642 NL80211_FLAG_NEED_RTNL,
12643 },
12644 {
12645 .cmd = NL80211_CMD_STOP_AP,
12646 .policy = nl80211_policy,
12647 .flags = GENL_UNS_ADMIN_PERM,
12648 .doit = nl80211_stop_ap,
12649 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12650 NL80211_FLAG_NEED_RTNL,
12651 },
12652 {
12653 .cmd = NL80211_CMD_GET_STATION,
12654 .doit = nl80211_get_station,
12655 .dumpit = nl80211_dump_station,
12656 .policy = nl80211_policy,
12657 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12658 NL80211_FLAG_NEED_RTNL,
12659 },
12660 {
12661 .cmd = NL80211_CMD_SET_STATION,
12662 .doit = nl80211_set_station,
12663 .policy = nl80211_policy,
12664 .flags = GENL_UNS_ADMIN_PERM,
12665 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12666 NL80211_FLAG_NEED_RTNL,
12667 },
12668 {
12669 .cmd = NL80211_CMD_NEW_STATION,
12670 .doit = nl80211_new_station,
12671 .policy = nl80211_policy,
12672 .flags = GENL_UNS_ADMIN_PERM,
12673 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12674 NL80211_FLAG_NEED_RTNL,
12675 },
12676 {
12677 .cmd = NL80211_CMD_DEL_STATION,
12678 .doit = nl80211_del_station,
12679 .policy = nl80211_policy,
12680 .flags = GENL_UNS_ADMIN_PERM,
12681 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12682 NL80211_FLAG_NEED_RTNL,
12683 },
12684 {
12685 .cmd = NL80211_CMD_GET_MPATH,
12686 .doit = nl80211_get_mpath,
12687 .dumpit = nl80211_dump_mpath,
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_GET_MPP,
12695 .doit = nl80211_get_mpp,
12696 .dumpit = nl80211_dump_mpp,
12697 .policy = nl80211_policy,
12698 .flags = GENL_UNS_ADMIN_PERM,
12699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12700 NL80211_FLAG_NEED_RTNL,
12701 },
12702 {
12703 .cmd = NL80211_CMD_SET_MPATH,
12704 .doit = nl80211_set_mpath,
12705 .policy = nl80211_policy,
12706 .flags = GENL_UNS_ADMIN_PERM,
12707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12708 NL80211_FLAG_NEED_RTNL,
12709 },
12710 {
12711 .cmd = NL80211_CMD_NEW_MPATH,
12712 .doit = nl80211_new_mpath,
12713 .policy = nl80211_policy,
12714 .flags = GENL_UNS_ADMIN_PERM,
12715 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12716 NL80211_FLAG_NEED_RTNL,
12717 },
12718 {
12719 .cmd = NL80211_CMD_DEL_MPATH,
12720 .doit = nl80211_del_mpath,
12721 .policy = nl80211_policy,
12722 .flags = GENL_UNS_ADMIN_PERM,
12723 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12724 NL80211_FLAG_NEED_RTNL,
12725 },
12726 {
12727 .cmd = NL80211_CMD_SET_BSS,
12728 .doit = nl80211_set_bss,
12729 .policy = nl80211_policy,
12730 .flags = GENL_UNS_ADMIN_PERM,
12731 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12732 NL80211_FLAG_NEED_RTNL,
12733 },
12734 {
12735 .cmd = NL80211_CMD_GET_REG,
12736 .doit = nl80211_get_reg_do,
12737 .dumpit = nl80211_get_reg_dump,
12738 .policy = nl80211_policy,
12739 .internal_flags = NL80211_FLAG_NEED_RTNL,
12740 /* can be retrieved by unprivileged users */
12741 },
12742 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12743 {
12744 .cmd = NL80211_CMD_SET_REG,
12745 .doit = nl80211_set_reg,
12746 .policy = nl80211_policy,
12747 .flags = GENL_ADMIN_PERM,
12748 .internal_flags = NL80211_FLAG_NEED_RTNL,
12749 },
12750 #endif
12751 {
12752 .cmd = NL80211_CMD_REQ_SET_REG,
12753 .doit = nl80211_req_set_reg,
12754 .policy = nl80211_policy,
12755 .flags = GENL_ADMIN_PERM,
12756 },
12757 {
12758 .cmd = NL80211_CMD_RELOAD_REGDB,
12759 .doit = nl80211_reload_regdb,
12760 .policy = nl80211_policy,
12761 .flags = GENL_ADMIN_PERM,
12762 },
12763 {
12764 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12765 .doit = nl80211_get_mesh_config,
12766 .policy = nl80211_policy,
12767 /* can be retrieved by unprivileged users */
12768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12769 NL80211_FLAG_NEED_RTNL,
12770 },
12771 {
12772 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12773 .doit = nl80211_update_mesh_config,
12774 .policy = nl80211_policy,
12775 .flags = GENL_UNS_ADMIN_PERM,
12776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12777 NL80211_FLAG_NEED_RTNL,
12778 },
12779 {
12780 .cmd = NL80211_CMD_TRIGGER_SCAN,
12781 .doit = nl80211_trigger_scan,
12782 .policy = nl80211_policy,
12783 .flags = GENL_UNS_ADMIN_PERM,
12784 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12785 NL80211_FLAG_NEED_RTNL,
12786 },
12787 {
12788 .cmd = NL80211_CMD_ABORT_SCAN,
12789 .doit = nl80211_abort_scan,
12790 .policy = nl80211_policy,
12791 .flags = GENL_UNS_ADMIN_PERM,
12792 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12793 NL80211_FLAG_NEED_RTNL,
12794 },
12795 {
12796 .cmd = NL80211_CMD_GET_SCAN,
12797 .policy = nl80211_policy,
12798 .dumpit = nl80211_dump_scan,
12799 },
12800 {
12801 .cmd = NL80211_CMD_START_SCHED_SCAN,
12802 .doit = nl80211_start_sched_scan,
12803 .policy = nl80211_policy,
12804 .flags = GENL_UNS_ADMIN_PERM,
12805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12806 NL80211_FLAG_NEED_RTNL,
12807 },
12808 {
12809 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12810 .doit = nl80211_stop_sched_scan,
12811 .policy = nl80211_policy,
12812 .flags = GENL_UNS_ADMIN_PERM,
12813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12814 NL80211_FLAG_NEED_RTNL,
12815 },
12816 {
12817 .cmd = NL80211_CMD_AUTHENTICATE,
12818 .doit = nl80211_authenticate,
12819 .policy = nl80211_policy,
12820 .flags = GENL_UNS_ADMIN_PERM,
12821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12822 NL80211_FLAG_NEED_RTNL |
12823 NL80211_FLAG_CLEAR_SKB,
12824 },
12825 {
12826 .cmd = NL80211_CMD_ASSOCIATE,
12827 .doit = nl80211_associate,
12828 .policy = nl80211_policy,
12829 .flags = GENL_UNS_ADMIN_PERM,
12830 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12831 NL80211_FLAG_NEED_RTNL,
12832 },
12833 {
12834 .cmd = NL80211_CMD_DEAUTHENTICATE,
12835 .doit = nl80211_deauthenticate,
12836 .policy = nl80211_policy,
12837 .flags = GENL_UNS_ADMIN_PERM,
12838 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12839 NL80211_FLAG_NEED_RTNL,
12840 },
12841 {
12842 .cmd = NL80211_CMD_DISASSOCIATE,
12843 .doit = nl80211_disassociate,
12844 .policy = nl80211_policy,
12845 .flags = GENL_UNS_ADMIN_PERM,
12846 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12847 NL80211_FLAG_NEED_RTNL,
12848 },
12849 {
12850 .cmd = NL80211_CMD_JOIN_IBSS,
12851 .doit = nl80211_join_ibss,
12852 .policy = nl80211_policy,
12853 .flags = GENL_UNS_ADMIN_PERM,
12854 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12855 NL80211_FLAG_NEED_RTNL,
12856 },
12857 {
12858 .cmd = NL80211_CMD_LEAVE_IBSS,
12859 .doit = nl80211_leave_ibss,
12860 .policy = nl80211_policy,
12861 .flags = GENL_UNS_ADMIN_PERM,
12862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12863 NL80211_FLAG_NEED_RTNL,
12864 },
12865 #ifdef CONFIG_NL80211_TESTMODE
12866 {
12867 .cmd = NL80211_CMD_TESTMODE,
12868 .doit = nl80211_testmode_do,
12869 .dumpit = nl80211_testmode_dump,
12870 .policy = nl80211_policy,
12871 .flags = GENL_UNS_ADMIN_PERM,
12872 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12873 NL80211_FLAG_NEED_RTNL,
12874 },
12875 #endif
12876 {
12877 .cmd = NL80211_CMD_CONNECT,
12878 .doit = nl80211_connect,
12879 .policy = nl80211_policy,
12880 .flags = GENL_UNS_ADMIN_PERM,
12881 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12882 NL80211_FLAG_NEED_RTNL,
12883 },
12884 {
12885 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12886 .doit = nl80211_update_connect_params,
12887 .policy = nl80211_policy,
12888 .flags = GENL_ADMIN_PERM,
12889 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12890 NL80211_FLAG_NEED_RTNL,
12891 },
12892 {
12893 .cmd = NL80211_CMD_DISCONNECT,
12894 .doit = nl80211_disconnect,
12895 .policy = nl80211_policy,
12896 .flags = GENL_UNS_ADMIN_PERM,
12897 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12898 NL80211_FLAG_NEED_RTNL,
12899 },
12900 {
12901 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12902 .doit = nl80211_wiphy_netns,
12903 .policy = nl80211_policy,
12904 .flags = GENL_UNS_ADMIN_PERM,
12905 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12906 NL80211_FLAG_NEED_RTNL,
12907 },
12908 {
12909 .cmd = NL80211_CMD_GET_SURVEY,
12910 .policy = nl80211_policy,
12911 .dumpit = nl80211_dump_survey,
12912 },
12913 {
12914 .cmd = NL80211_CMD_SET_PMKSA,
12915 .doit = nl80211_setdel_pmksa,
12916 .policy = nl80211_policy,
12917 .flags = GENL_UNS_ADMIN_PERM,
12918 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12919 NL80211_FLAG_NEED_RTNL,
12920 },
12921 {
12922 .cmd = NL80211_CMD_DEL_PMKSA,
12923 .doit = nl80211_setdel_pmksa,
12924 .policy = nl80211_policy,
12925 .flags = GENL_UNS_ADMIN_PERM,
12926 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12927 NL80211_FLAG_NEED_RTNL,
12928 },
12929 {
12930 .cmd = NL80211_CMD_FLUSH_PMKSA,
12931 .doit = nl80211_flush_pmksa,
12932 .policy = nl80211_policy,
12933 .flags = GENL_UNS_ADMIN_PERM,
12934 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12935 NL80211_FLAG_NEED_RTNL,
12936 },
12937 {
12938 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12939 .doit = nl80211_remain_on_channel,
12940 .policy = nl80211_policy,
12941 .flags = GENL_UNS_ADMIN_PERM,
12942 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12943 NL80211_FLAG_NEED_RTNL,
12944 },
12945 {
12946 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12947 .doit = nl80211_cancel_remain_on_channel,
12948 .policy = nl80211_policy,
12949 .flags = GENL_UNS_ADMIN_PERM,
12950 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12951 NL80211_FLAG_NEED_RTNL,
12952 },
12953 {
12954 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12955 .doit = nl80211_set_tx_bitrate_mask,
12956 .policy = nl80211_policy,
12957 .flags = GENL_UNS_ADMIN_PERM,
12958 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12959 NL80211_FLAG_NEED_RTNL,
12960 },
12961 {
12962 .cmd = NL80211_CMD_REGISTER_FRAME,
12963 .doit = nl80211_register_mgmt,
12964 .policy = nl80211_policy,
12965 .flags = GENL_UNS_ADMIN_PERM,
12966 .internal_flags = NL80211_FLAG_NEED_WDEV |
12967 NL80211_FLAG_NEED_RTNL,
12968 },
12969 {
12970 .cmd = NL80211_CMD_FRAME,
12971 .doit = nl80211_tx_mgmt,
12972 .policy = nl80211_policy,
12973 .flags = GENL_UNS_ADMIN_PERM,
12974 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12975 NL80211_FLAG_NEED_RTNL,
12976 },
12977 {
12978 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12979 .doit = nl80211_tx_mgmt_cancel_wait,
12980 .policy = nl80211_policy,
12981 .flags = GENL_UNS_ADMIN_PERM,
12982 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12983 NL80211_FLAG_NEED_RTNL,
12984 },
12985 {
12986 .cmd = NL80211_CMD_SET_POWER_SAVE,
12987 .doit = nl80211_set_power_save,
12988 .policy = nl80211_policy,
12989 .flags = GENL_UNS_ADMIN_PERM,
12990 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12991 NL80211_FLAG_NEED_RTNL,
12992 },
12993 {
12994 .cmd = NL80211_CMD_GET_POWER_SAVE,
12995 .doit = nl80211_get_power_save,
12996 .policy = nl80211_policy,
12997 /* can be retrieved by unprivileged users */
12998 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12999 NL80211_FLAG_NEED_RTNL,
13000 },
13001 {
13002 .cmd = NL80211_CMD_SET_CQM,
13003 .doit = nl80211_set_cqm,
13004 .policy = nl80211_policy,
13005 .flags = GENL_UNS_ADMIN_PERM,
13006 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13007 NL80211_FLAG_NEED_RTNL,
13008 },
13009 {
13010 .cmd = NL80211_CMD_SET_CHANNEL,
13011 .doit = nl80211_set_channel,
13012 .policy = nl80211_policy,
13013 .flags = GENL_UNS_ADMIN_PERM,
13014 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13015 NL80211_FLAG_NEED_RTNL,
13016 },
13017 {
13018 .cmd = NL80211_CMD_SET_WDS_PEER,
13019 .doit = nl80211_set_wds_peer,
13020 .policy = nl80211_policy,
13021 .flags = GENL_UNS_ADMIN_PERM,
13022 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13023 NL80211_FLAG_NEED_RTNL,
13024 },
13025 {
13026 .cmd = NL80211_CMD_JOIN_MESH,
13027 .doit = nl80211_join_mesh,
13028 .policy = nl80211_policy,
13029 .flags = GENL_UNS_ADMIN_PERM,
13030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13031 NL80211_FLAG_NEED_RTNL,
13032 },
13033 {
13034 .cmd = NL80211_CMD_LEAVE_MESH,
13035 .doit = nl80211_leave_mesh,
13036 .policy = nl80211_policy,
13037 .flags = GENL_UNS_ADMIN_PERM,
13038 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13039 NL80211_FLAG_NEED_RTNL,
13040 },
13041 {
13042 .cmd = NL80211_CMD_JOIN_OCB,
13043 .doit = nl80211_join_ocb,
13044 .policy = nl80211_policy,
13045 .flags = GENL_UNS_ADMIN_PERM,
13046 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13047 NL80211_FLAG_NEED_RTNL,
13048 },
13049 {
13050 .cmd = NL80211_CMD_LEAVE_OCB,
13051 .doit = nl80211_leave_ocb,
13052 .policy = nl80211_policy,
13053 .flags = GENL_UNS_ADMIN_PERM,
13054 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13055 NL80211_FLAG_NEED_RTNL,
13056 },
13057 #ifdef CONFIG_PM
13058 {
13059 .cmd = NL80211_CMD_GET_WOWLAN,
13060 .doit = nl80211_get_wowlan,
13061 .policy = nl80211_policy,
13062 /* can be retrieved by unprivileged users */
13063 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13064 NL80211_FLAG_NEED_RTNL,
13065 },
13066 {
13067 .cmd = NL80211_CMD_SET_WOWLAN,
13068 .doit = nl80211_set_wowlan,
13069 .policy = nl80211_policy,
13070 .flags = GENL_UNS_ADMIN_PERM,
13071 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13072 NL80211_FLAG_NEED_RTNL,
13073 },
13074 #endif
13075 {
13076 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13077 .doit = nl80211_set_rekey_data,
13078 .policy = nl80211_policy,
13079 .flags = GENL_UNS_ADMIN_PERM,
13080 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13081 NL80211_FLAG_NEED_RTNL |
13082 NL80211_FLAG_CLEAR_SKB,
13083 },
13084 {
13085 .cmd = NL80211_CMD_TDLS_MGMT,
13086 .doit = nl80211_tdls_mgmt,
13087 .policy = nl80211_policy,
13088 .flags = GENL_UNS_ADMIN_PERM,
13089 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13090 NL80211_FLAG_NEED_RTNL,
13091 },
13092 {
13093 .cmd = NL80211_CMD_TDLS_OPER,
13094 .doit = nl80211_tdls_oper,
13095 .policy = nl80211_policy,
13096 .flags = GENL_UNS_ADMIN_PERM,
13097 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13098 NL80211_FLAG_NEED_RTNL,
13099 },
13100 {
13101 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13102 .doit = nl80211_register_unexpected_frame,
13103 .policy = nl80211_policy,
13104 .flags = GENL_UNS_ADMIN_PERM,
13105 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13106 NL80211_FLAG_NEED_RTNL,
13107 },
13108 {
13109 .cmd = NL80211_CMD_PROBE_CLIENT,
13110 .doit = nl80211_probe_client,
13111 .policy = nl80211_policy,
13112 .flags = GENL_UNS_ADMIN_PERM,
13113 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13114 NL80211_FLAG_NEED_RTNL,
13115 },
13116 {
13117 .cmd = NL80211_CMD_REGISTER_BEACONS,
13118 .doit = nl80211_register_beacons,
13119 .policy = nl80211_policy,
13120 .flags = GENL_UNS_ADMIN_PERM,
13121 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13122 NL80211_FLAG_NEED_RTNL,
13123 },
13124 {
13125 .cmd = NL80211_CMD_SET_NOACK_MAP,
13126 .doit = nl80211_set_noack_map,
13127 .policy = nl80211_policy,
13128 .flags = GENL_UNS_ADMIN_PERM,
13129 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13130 NL80211_FLAG_NEED_RTNL,
13131 },
13132 {
13133 .cmd = NL80211_CMD_START_P2P_DEVICE,
13134 .doit = nl80211_start_p2p_device,
13135 .policy = nl80211_policy,
13136 .flags = GENL_UNS_ADMIN_PERM,
13137 .internal_flags = NL80211_FLAG_NEED_WDEV |
13138 NL80211_FLAG_NEED_RTNL,
13139 },
13140 {
13141 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13142 .doit = nl80211_stop_p2p_device,
13143 .policy = nl80211_policy,
13144 .flags = GENL_UNS_ADMIN_PERM,
13145 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13146 NL80211_FLAG_NEED_RTNL,
13147 },
13148 {
13149 .cmd = NL80211_CMD_START_NAN,
13150 .doit = nl80211_start_nan,
13151 .policy = nl80211_policy,
13152 .flags = GENL_ADMIN_PERM,
13153 .internal_flags = NL80211_FLAG_NEED_WDEV |
13154 NL80211_FLAG_NEED_RTNL,
13155 },
13156 {
13157 .cmd = NL80211_CMD_STOP_NAN,
13158 .doit = nl80211_stop_nan,
13159 .policy = nl80211_policy,
13160 .flags = GENL_ADMIN_PERM,
13161 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13162 NL80211_FLAG_NEED_RTNL,
13163 },
13164 {
13165 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13166 .doit = nl80211_nan_add_func,
13167 .policy = nl80211_policy,
13168 .flags = GENL_ADMIN_PERM,
13169 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13170 NL80211_FLAG_NEED_RTNL,
13171 },
13172 {
13173 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13174 .doit = nl80211_nan_del_func,
13175 .policy = nl80211_policy,
13176 .flags = GENL_ADMIN_PERM,
13177 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13178 NL80211_FLAG_NEED_RTNL,
13179 },
13180 {
13181 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13182 .doit = nl80211_nan_change_config,
13183 .policy = nl80211_policy,
13184 .flags = GENL_ADMIN_PERM,
13185 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13186 NL80211_FLAG_NEED_RTNL,
13187 },
13188 {
13189 .cmd = NL80211_CMD_SET_MCAST_RATE,
13190 .doit = nl80211_set_mcast_rate,
13191 .policy = nl80211_policy,
13192 .flags = GENL_UNS_ADMIN_PERM,
13193 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13194 NL80211_FLAG_NEED_RTNL,
13195 },
13196 {
13197 .cmd = NL80211_CMD_SET_MAC_ACL,
13198 .doit = nl80211_set_mac_acl,
13199 .policy = nl80211_policy,
13200 .flags = GENL_UNS_ADMIN_PERM,
13201 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13202 NL80211_FLAG_NEED_RTNL,
13203 },
13204 {
13205 .cmd = NL80211_CMD_RADAR_DETECT,
13206 .doit = nl80211_start_radar_detection,
13207 .policy = nl80211_policy,
13208 .flags = GENL_UNS_ADMIN_PERM,
13209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13210 NL80211_FLAG_NEED_RTNL,
13211 },
13212 {
13213 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13214 .doit = nl80211_get_protocol_features,
13215 .policy = nl80211_policy,
13216 },
13217 {
13218 .cmd = NL80211_CMD_UPDATE_FT_IES,
13219 .doit = nl80211_update_ft_ies,
13220 .policy = nl80211_policy,
13221 .flags = GENL_UNS_ADMIN_PERM,
13222 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13223 NL80211_FLAG_NEED_RTNL,
13224 },
13225 {
13226 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13227 .doit = nl80211_crit_protocol_start,
13228 .policy = nl80211_policy,
13229 .flags = GENL_UNS_ADMIN_PERM,
13230 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13231 NL80211_FLAG_NEED_RTNL,
13232 },
13233 {
13234 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13235 .doit = nl80211_crit_protocol_stop,
13236 .policy = nl80211_policy,
13237 .flags = GENL_UNS_ADMIN_PERM,
13238 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13239 NL80211_FLAG_NEED_RTNL,
13240 },
13241 {
13242 .cmd = NL80211_CMD_GET_COALESCE,
13243 .doit = nl80211_get_coalesce,
13244 .policy = nl80211_policy,
13245 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13246 NL80211_FLAG_NEED_RTNL,
13247 },
13248 {
13249 .cmd = NL80211_CMD_SET_COALESCE,
13250 .doit = nl80211_set_coalesce,
13251 .policy = nl80211_policy,
13252 .flags = GENL_UNS_ADMIN_PERM,
13253 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13254 NL80211_FLAG_NEED_RTNL,
13255 },
13256 {
13257 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13258 .doit = nl80211_channel_switch,
13259 .policy = nl80211_policy,
13260 .flags = GENL_UNS_ADMIN_PERM,
13261 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13262 NL80211_FLAG_NEED_RTNL,
13263 },
13264 {
13265 .cmd = NL80211_CMD_VENDOR,
13266 .doit = nl80211_vendor_cmd,
13267 .dumpit = nl80211_vendor_cmd_dump,
13268 .policy = nl80211_policy,
13269 .flags = GENL_UNS_ADMIN_PERM,
13270 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13271 NL80211_FLAG_NEED_RTNL,
13272 },
13273 {
13274 .cmd = NL80211_CMD_SET_QOS_MAP,
13275 .doit = nl80211_set_qos_map,
13276 .policy = nl80211_policy,
13277 .flags = GENL_UNS_ADMIN_PERM,
13278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13279 NL80211_FLAG_NEED_RTNL,
13280 },
13281 {
13282 .cmd = NL80211_CMD_ADD_TX_TS,
13283 .doit = nl80211_add_tx_ts,
13284 .policy = nl80211_policy,
13285 .flags = GENL_UNS_ADMIN_PERM,
13286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13287 NL80211_FLAG_NEED_RTNL,
13288 },
13289 {
13290 .cmd = NL80211_CMD_DEL_TX_TS,
13291 .doit = nl80211_del_tx_ts,
13292 .policy = nl80211_policy,
13293 .flags = GENL_UNS_ADMIN_PERM,
13294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13295 NL80211_FLAG_NEED_RTNL,
13296 },
13297 {
13298 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13299 .doit = nl80211_tdls_channel_switch,
13300 .policy = nl80211_policy,
13301 .flags = GENL_UNS_ADMIN_PERM,
13302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13303 NL80211_FLAG_NEED_RTNL,
13304 },
13305 {
13306 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13307 .doit = nl80211_tdls_cancel_channel_switch,
13308 .policy = nl80211_policy,
13309 .flags = GENL_UNS_ADMIN_PERM,
13310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13311 NL80211_FLAG_NEED_RTNL,
13312 },
13313 {
13314 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13315 .doit = nl80211_set_multicast_to_unicast,
13316 .policy = nl80211_policy,
13317 .flags = GENL_UNS_ADMIN_PERM,
13318 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13319 NL80211_FLAG_NEED_RTNL,
13320 },
13321 {
13322 .cmd = NL80211_CMD_SET_PMK,
13323 .doit = nl80211_set_pmk,
13324 .policy = nl80211_policy,
13325 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13326 NL80211_FLAG_NEED_RTNL,
13327 },
13328 {
13329 .cmd = NL80211_CMD_DEL_PMK,
13330 .doit = nl80211_del_pmk,
13331 .policy = nl80211_policy,
13332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13333 NL80211_FLAG_NEED_RTNL,
13334 },
13335
13336 };
13337
13338 static struct genl_family nl80211_fam __ro_after_init = {
13339 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13340 .hdrsize = 0, /* no private header */
13341 .version = 1, /* no particular meaning now */
13342 .maxattr = NL80211_ATTR_MAX,
13343 .netnsok = true,
13344 .pre_doit = nl80211_pre_doit,
13345 .post_doit = nl80211_post_doit,
13346 .module = THIS_MODULE,
13347 .ops = nl80211_ops,
13348 .n_ops = ARRAY_SIZE(nl80211_ops),
13349 .mcgrps = nl80211_mcgrps,
13350 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13351 };
13352
13353 /* notification functions */
13354
13355 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13356 enum nl80211_commands cmd)
13357 {
13358 struct sk_buff *msg;
13359 struct nl80211_dump_wiphy_state state = {};
13360
13361 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13362 cmd != NL80211_CMD_DEL_WIPHY);
13363
13364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13365 if (!msg)
13366 return;
13367
13368 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13369 nlmsg_free(msg);
13370 return;
13371 }
13372
13373 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13374 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13375 }
13376
13377 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13378 struct wireless_dev *wdev,
13379 enum nl80211_commands cmd)
13380 {
13381 struct sk_buff *msg;
13382
13383 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13384 cmd != NL80211_CMD_DEL_INTERFACE);
13385
13386 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13387 if (!msg)
13388 return;
13389
13390 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13391 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13392 nlmsg_free(msg);
13393 return;
13394 }
13395
13396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13397 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13398 }
13399
13400 static int nl80211_add_scan_req(struct sk_buff *msg,
13401 struct cfg80211_registered_device *rdev)
13402 {
13403 struct cfg80211_scan_request *req = rdev->scan_req;
13404 struct nlattr *nest;
13405 int i;
13406
13407 if (WARN_ON(!req))
13408 return 0;
13409
13410 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13411 if (!nest)
13412 goto nla_put_failure;
13413 for (i = 0; i < req->n_ssids; i++) {
13414 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13415 goto nla_put_failure;
13416 }
13417 nla_nest_end(msg, nest);
13418
13419 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13420 if (!nest)
13421 goto nla_put_failure;
13422 for (i = 0; i < req->n_channels; i++) {
13423 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13424 goto nla_put_failure;
13425 }
13426 nla_nest_end(msg, nest);
13427
13428 if (req->ie &&
13429 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13430 goto nla_put_failure;
13431
13432 if (req->flags &&
13433 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13434 goto nla_put_failure;
13435
13436 if (req->info.scan_start_tsf &&
13437 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13438 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13439 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13440 req->info.tsf_bssid)))
13441 goto nla_put_failure;
13442
13443 return 0;
13444 nla_put_failure:
13445 return -ENOBUFS;
13446 }
13447
13448 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13449 struct cfg80211_registered_device *rdev,
13450 struct wireless_dev *wdev,
13451 u32 portid, u32 seq, int flags,
13452 u32 cmd)
13453 {
13454 void *hdr;
13455
13456 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13457 if (!hdr)
13458 return -1;
13459
13460 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13461 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13462 wdev->netdev->ifindex)) ||
13463 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13464 NL80211_ATTR_PAD))
13465 goto nla_put_failure;
13466
13467 /* ignore errors and send incomplete event anyway */
13468 nl80211_add_scan_req(msg, rdev);
13469
13470 genlmsg_end(msg, hdr);
13471 return 0;
13472
13473 nla_put_failure:
13474 genlmsg_cancel(msg, hdr);
13475 return -EMSGSIZE;
13476 }
13477
13478 static int
13479 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13480 struct cfg80211_sched_scan_request *req, u32 cmd)
13481 {
13482 void *hdr;
13483
13484 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13485 if (!hdr)
13486 return -1;
13487
13488 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13489 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13490 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13491 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13492 NL80211_ATTR_PAD))
13493 goto nla_put_failure;
13494
13495 genlmsg_end(msg, hdr);
13496 return 0;
13497
13498 nla_put_failure:
13499 genlmsg_cancel(msg, hdr);
13500 return -EMSGSIZE;
13501 }
13502
13503 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13504 struct wireless_dev *wdev)
13505 {
13506 struct sk_buff *msg;
13507
13508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13509 if (!msg)
13510 return;
13511
13512 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13513 NL80211_CMD_TRIGGER_SCAN) < 0) {
13514 nlmsg_free(msg);
13515 return;
13516 }
13517
13518 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13519 NL80211_MCGRP_SCAN, GFP_KERNEL);
13520 }
13521
13522 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13523 struct wireless_dev *wdev, bool aborted)
13524 {
13525 struct sk_buff *msg;
13526
13527 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13528 if (!msg)
13529 return NULL;
13530
13531 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13532 aborted ? NL80211_CMD_SCAN_ABORTED :
13533 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13534 nlmsg_free(msg);
13535 return NULL;
13536 }
13537
13538 return msg;
13539 }
13540
13541 /* send message created by nl80211_build_scan_msg() */
13542 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13543 struct sk_buff *msg)
13544 {
13545 if (!msg)
13546 return;
13547
13548 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13549 NL80211_MCGRP_SCAN, GFP_KERNEL);
13550 }
13551
13552 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13553 {
13554 struct sk_buff *msg;
13555
13556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13557 if (!msg)
13558 return;
13559
13560 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13561 nlmsg_free(msg);
13562 return;
13563 }
13564
13565 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13566 NL80211_MCGRP_SCAN, GFP_KERNEL);
13567 }
13568
13569 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13570 struct regulatory_request *request)
13571 {
13572 /* Userspace can always count this one always being set */
13573 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13574 goto nla_put_failure;
13575
13576 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13577 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13578 NL80211_REGDOM_TYPE_WORLD))
13579 goto nla_put_failure;
13580 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13581 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13582 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13583 goto nla_put_failure;
13584 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13585 request->intersect) {
13586 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13587 NL80211_REGDOM_TYPE_INTERSECTION))
13588 goto nla_put_failure;
13589 } else {
13590 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13591 NL80211_REGDOM_TYPE_COUNTRY) ||
13592 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13593 request->alpha2))
13594 goto nla_put_failure;
13595 }
13596
13597 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13598 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13599
13600 if (wiphy &&
13601 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13602 goto nla_put_failure;
13603
13604 if (wiphy &&
13605 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13606 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13607 goto nla_put_failure;
13608 }
13609
13610 return true;
13611
13612 nla_put_failure:
13613 return false;
13614 }
13615
13616 /*
13617 * This can happen on global regulatory changes or device specific settings
13618 * based on custom regulatory domains.
13619 */
13620 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13621 struct regulatory_request *request)
13622 {
13623 struct sk_buff *msg;
13624 void *hdr;
13625
13626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13627 if (!msg)
13628 return;
13629
13630 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13631 if (!hdr) {
13632 nlmsg_free(msg);
13633 return;
13634 }
13635
13636 if (nl80211_reg_change_event_fill(msg, request) == false)
13637 goto nla_put_failure;
13638
13639 genlmsg_end(msg, hdr);
13640
13641 rcu_read_lock();
13642 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13643 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13644 rcu_read_unlock();
13645
13646 return;
13647
13648 nla_put_failure:
13649 genlmsg_cancel(msg, hdr);
13650 nlmsg_free(msg);
13651 }
13652
13653 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13654 struct net_device *netdev,
13655 const u8 *buf, size_t len,
13656 enum nl80211_commands cmd, gfp_t gfp,
13657 int uapsd_queues)
13658 {
13659 struct sk_buff *msg;
13660 void *hdr;
13661
13662 msg = nlmsg_new(100 + len, gfp);
13663 if (!msg)
13664 return;
13665
13666 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13667 if (!hdr) {
13668 nlmsg_free(msg);
13669 return;
13670 }
13671
13672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13674 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13675 goto nla_put_failure;
13676
13677 if (uapsd_queues >= 0) {
13678 struct nlattr *nla_wmm =
13679 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13680 if (!nla_wmm)
13681 goto nla_put_failure;
13682
13683 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13684 uapsd_queues))
13685 goto nla_put_failure;
13686
13687 nla_nest_end(msg, nla_wmm);
13688 }
13689
13690 genlmsg_end(msg, hdr);
13691
13692 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13693 NL80211_MCGRP_MLME, gfp);
13694 return;
13695
13696 nla_put_failure:
13697 genlmsg_cancel(msg, hdr);
13698 nlmsg_free(msg);
13699 }
13700
13701 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13702 struct net_device *netdev, const u8 *buf,
13703 size_t len, gfp_t gfp)
13704 {
13705 nl80211_send_mlme_event(rdev, netdev, buf, len,
13706 NL80211_CMD_AUTHENTICATE, gfp, -1);
13707 }
13708
13709 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13710 struct net_device *netdev, const u8 *buf,
13711 size_t len, gfp_t gfp, int uapsd_queues)
13712 {
13713 nl80211_send_mlme_event(rdev, netdev, buf, len,
13714 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13715 }
13716
13717 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13718 struct net_device *netdev, const u8 *buf,
13719 size_t len, gfp_t gfp)
13720 {
13721 nl80211_send_mlme_event(rdev, netdev, buf, len,
13722 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13723 }
13724
13725 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13726 struct net_device *netdev, const u8 *buf,
13727 size_t len, gfp_t gfp)
13728 {
13729 nl80211_send_mlme_event(rdev, netdev, buf, len,
13730 NL80211_CMD_DISASSOCIATE, gfp, -1);
13731 }
13732
13733 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13734 size_t len)
13735 {
13736 struct wireless_dev *wdev = dev->ieee80211_ptr;
13737 struct wiphy *wiphy = wdev->wiphy;
13738 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13739 const struct ieee80211_mgmt *mgmt = (void *)buf;
13740 u32 cmd;
13741
13742 if (WARN_ON(len < 2))
13743 return;
13744
13745 if (ieee80211_is_deauth(mgmt->frame_control))
13746 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13747 else
13748 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13749
13750 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13751 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13752 }
13753 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13754
13755 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13756 struct net_device *netdev, int cmd,
13757 const u8 *addr, gfp_t gfp)
13758 {
13759 struct sk_buff *msg;
13760 void *hdr;
13761
13762 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13763 if (!msg)
13764 return;
13765
13766 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13767 if (!hdr) {
13768 nlmsg_free(msg);
13769 return;
13770 }
13771
13772 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13773 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13774 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13775 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13776 goto nla_put_failure;
13777
13778 genlmsg_end(msg, hdr);
13779
13780 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13781 NL80211_MCGRP_MLME, gfp);
13782 return;
13783
13784 nla_put_failure:
13785 genlmsg_cancel(msg, hdr);
13786 nlmsg_free(msg);
13787 }
13788
13789 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13790 struct net_device *netdev, const u8 *addr,
13791 gfp_t gfp)
13792 {
13793 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13794 addr, gfp);
13795 }
13796
13797 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13798 struct net_device *netdev, const u8 *addr,
13799 gfp_t gfp)
13800 {
13801 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13802 addr, gfp);
13803 }
13804
13805 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13806 struct net_device *netdev,
13807 struct cfg80211_connect_resp_params *cr,
13808 gfp_t gfp)
13809 {
13810 struct sk_buff *msg;
13811 void *hdr;
13812
13813 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13814 cr->fils_kek_len + cr->pmk_len +
13815 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13816 if (!msg)
13817 return;
13818
13819 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13820 if (!hdr) {
13821 nlmsg_free(msg);
13822 return;
13823 }
13824
13825 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13826 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13827 (cr->bssid &&
13828 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13829 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13830 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13831 cr->status) ||
13832 (cr->status < 0 &&
13833 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13834 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13835 cr->timeout_reason))) ||
13836 (cr->req_ie &&
13837 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13838 (cr->resp_ie &&
13839 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13840 cr->resp_ie)) ||
13841 (cr->update_erp_next_seq_num &&
13842 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13843 cr->fils_erp_next_seq_num)) ||
13844 (cr->status == WLAN_STATUS_SUCCESS &&
13845 ((cr->fils_kek &&
13846 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13847 cr->fils_kek)) ||
13848 (cr->pmk &&
13849 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13850 (cr->pmkid &&
13851 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13852 goto nla_put_failure;
13853
13854 genlmsg_end(msg, hdr);
13855
13856 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13857 NL80211_MCGRP_MLME, gfp);
13858 return;
13859
13860 nla_put_failure:
13861 genlmsg_cancel(msg, hdr);
13862 nlmsg_free(msg);
13863 }
13864
13865 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13866 struct net_device *netdev,
13867 struct cfg80211_roam_info *info, gfp_t gfp)
13868 {
13869 struct sk_buff *msg;
13870 void *hdr;
13871 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13872
13873 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13874 if (!msg)
13875 return;
13876
13877 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13878 if (!hdr) {
13879 nlmsg_free(msg);
13880 return;
13881 }
13882
13883 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13884 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13885 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13886 (info->req_ie &&
13887 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13888 info->req_ie)) ||
13889 (info->resp_ie &&
13890 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13891 info->resp_ie)))
13892 goto nla_put_failure;
13893
13894 genlmsg_end(msg, hdr);
13895
13896 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13897 NL80211_MCGRP_MLME, gfp);
13898 return;
13899
13900 nla_put_failure:
13901 genlmsg_cancel(msg, hdr);
13902 nlmsg_free(msg);
13903 }
13904
13905 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13906 struct net_device *netdev, const u8 *bssid)
13907 {
13908 struct sk_buff *msg;
13909 void *hdr;
13910
13911 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13912 if (!msg)
13913 return;
13914
13915 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13916 if (!hdr) {
13917 nlmsg_free(msg);
13918 return;
13919 }
13920
13921 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13922 goto nla_put_failure;
13923
13924 genlmsg_end(msg, hdr);
13925
13926 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13927 NL80211_MCGRP_MLME, GFP_KERNEL);
13928 return;
13929
13930 nla_put_failure:
13931 genlmsg_cancel(msg, hdr);
13932 nlmsg_free(msg);
13933 }
13934
13935 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13936 struct net_device *netdev, u16 reason,
13937 const u8 *ie, size_t ie_len, bool from_ap)
13938 {
13939 struct sk_buff *msg;
13940 void *hdr;
13941
13942 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13943 if (!msg)
13944 return;
13945
13946 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13947 if (!hdr) {
13948 nlmsg_free(msg);
13949 return;
13950 }
13951
13952 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13953 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13954 (from_ap && reason &&
13955 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13956 (from_ap &&
13957 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13958 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13959 goto nla_put_failure;
13960
13961 genlmsg_end(msg, hdr);
13962
13963 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13964 NL80211_MCGRP_MLME, GFP_KERNEL);
13965 return;
13966
13967 nla_put_failure:
13968 genlmsg_cancel(msg, hdr);
13969 nlmsg_free(msg);
13970 }
13971
13972 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13973 struct net_device *netdev, const u8 *bssid,
13974 gfp_t gfp)
13975 {
13976 struct sk_buff *msg;
13977 void *hdr;
13978
13979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13980 if (!msg)
13981 return;
13982
13983 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13984 if (!hdr) {
13985 nlmsg_free(msg);
13986 return;
13987 }
13988
13989 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13990 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13991 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13992 goto nla_put_failure;
13993
13994 genlmsg_end(msg, hdr);
13995
13996 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13997 NL80211_MCGRP_MLME, gfp);
13998 return;
13999
14000 nla_put_failure:
14001 genlmsg_cancel(msg, hdr);
14002 nlmsg_free(msg);
14003 }
14004
14005 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14006 const u8* ie, u8 ie_len, gfp_t gfp)
14007 {
14008 struct wireless_dev *wdev = dev->ieee80211_ptr;
14009 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14010 struct sk_buff *msg;
14011 void *hdr;
14012
14013 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14014 return;
14015
14016 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14017
14018 msg = nlmsg_new(100 + ie_len, gfp);
14019 if (!msg)
14020 return;
14021
14022 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14023 if (!hdr) {
14024 nlmsg_free(msg);
14025 return;
14026 }
14027
14028 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14029 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14030 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14031 (ie_len && ie &&
14032 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14033 goto nla_put_failure;
14034
14035 genlmsg_end(msg, hdr);
14036
14037 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14038 NL80211_MCGRP_MLME, gfp);
14039 return;
14040
14041 nla_put_failure:
14042 genlmsg_cancel(msg, hdr);
14043 nlmsg_free(msg);
14044 }
14045 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14046
14047 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14048 struct net_device *netdev, const u8 *addr,
14049 enum nl80211_key_type key_type, int key_id,
14050 const u8 *tsc, gfp_t gfp)
14051 {
14052 struct sk_buff *msg;
14053 void *hdr;
14054
14055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14056 if (!msg)
14057 return;
14058
14059 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14060 if (!hdr) {
14061 nlmsg_free(msg);
14062 return;
14063 }
14064
14065 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14066 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14067 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14068 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14069 (key_id != -1 &&
14070 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14071 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14072 goto nla_put_failure;
14073
14074 genlmsg_end(msg, hdr);
14075
14076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14077 NL80211_MCGRP_MLME, gfp);
14078 return;
14079
14080 nla_put_failure:
14081 genlmsg_cancel(msg, hdr);
14082 nlmsg_free(msg);
14083 }
14084
14085 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14086 struct ieee80211_channel *channel_before,
14087 struct ieee80211_channel *channel_after)
14088 {
14089 struct sk_buff *msg;
14090 void *hdr;
14091 struct nlattr *nl_freq;
14092
14093 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14094 if (!msg)
14095 return;
14096
14097 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14098 if (!hdr) {
14099 nlmsg_free(msg);
14100 return;
14101 }
14102
14103 /*
14104 * Since we are applying the beacon hint to a wiphy we know its
14105 * wiphy_idx is valid
14106 */
14107 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14108 goto nla_put_failure;
14109
14110 /* Before */
14111 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14112 if (!nl_freq)
14113 goto nla_put_failure;
14114 if (nl80211_msg_put_channel(msg, channel_before, false))
14115 goto nla_put_failure;
14116 nla_nest_end(msg, nl_freq);
14117
14118 /* After */
14119 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14120 if (!nl_freq)
14121 goto nla_put_failure;
14122 if (nl80211_msg_put_channel(msg, channel_after, false))
14123 goto nla_put_failure;
14124 nla_nest_end(msg, nl_freq);
14125
14126 genlmsg_end(msg, hdr);
14127
14128 rcu_read_lock();
14129 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14130 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14131 rcu_read_unlock();
14132
14133 return;
14134
14135 nla_put_failure:
14136 genlmsg_cancel(msg, hdr);
14137 nlmsg_free(msg);
14138 }
14139
14140 static void nl80211_send_remain_on_chan_event(
14141 int cmd, struct cfg80211_registered_device *rdev,
14142 struct wireless_dev *wdev, u64 cookie,
14143 struct ieee80211_channel *chan,
14144 unsigned int duration, gfp_t gfp)
14145 {
14146 struct sk_buff *msg;
14147 void *hdr;
14148
14149 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14150 if (!msg)
14151 return;
14152
14153 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14154 if (!hdr) {
14155 nlmsg_free(msg);
14156 return;
14157 }
14158
14159 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14160 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14161 wdev->netdev->ifindex)) ||
14162 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14163 NL80211_ATTR_PAD) ||
14164 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14165 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14166 NL80211_CHAN_NO_HT) ||
14167 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14168 NL80211_ATTR_PAD))
14169 goto nla_put_failure;
14170
14171 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14172 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
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_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14187 struct ieee80211_channel *chan,
14188 unsigned int duration, gfp_t gfp)
14189 {
14190 struct wiphy *wiphy = wdev->wiphy;
14191 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14192
14193 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14194 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14195 rdev, wdev, cookie, chan,
14196 duration, gfp);
14197 }
14198 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14199
14200 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14201 struct ieee80211_channel *chan,
14202 gfp_t gfp)
14203 {
14204 struct wiphy *wiphy = wdev->wiphy;
14205 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14206
14207 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14208 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14209 rdev, wdev, cookie, chan, 0, gfp);
14210 }
14211 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14212
14213 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14214 struct station_info *sinfo, gfp_t gfp)
14215 {
14216 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14217 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14218 struct sk_buff *msg;
14219
14220 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14221
14222 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14223 if (!msg)
14224 return;
14225
14226 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14227 rdev, dev, mac_addr, sinfo) < 0) {
14228 nlmsg_free(msg);
14229 return;
14230 }
14231
14232 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14233 NL80211_MCGRP_MLME, gfp);
14234 }
14235 EXPORT_SYMBOL(cfg80211_new_sta);
14236
14237 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14238 struct station_info *sinfo, gfp_t gfp)
14239 {
14240 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14241 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14242 struct sk_buff *msg;
14243 struct station_info empty_sinfo = {};
14244
14245 if (!sinfo)
14246 sinfo = &empty_sinfo;
14247
14248 trace_cfg80211_del_sta(dev, mac_addr);
14249
14250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14251 if (!msg)
14252 return;
14253
14254 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14255 rdev, dev, mac_addr, sinfo) < 0) {
14256 nlmsg_free(msg);
14257 return;
14258 }
14259
14260 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14261 NL80211_MCGRP_MLME, gfp);
14262 }
14263 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14264
14265 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14266 enum nl80211_connect_failed_reason reason,
14267 gfp_t gfp)
14268 {
14269 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14270 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14271 struct sk_buff *msg;
14272 void *hdr;
14273
14274 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14275 if (!msg)
14276 return;
14277
14278 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14279 if (!hdr) {
14280 nlmsg_free(msg);
14281 return;
14282 }
14283
14284 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14286 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14287 goto nla_put_failure;
14288
14289 genlmsg_end(msg, hdr);
14290
14291 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14292 NL80211_MCGRP_MLME, gfp);
14293 return;
14294
14295 nla_put_failure:
14296 genlmsg_cancel(msg, hdr);
14297 nlmsg_free(msg);
14298 }
14299 EXPORT_SYMBOL(cfg80211_conn_failed);
14300
14301 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14302 const u8 *addr, gfp_t gfp)
14303 {
14304 struct wireless_dev *wdev = dev->ieee80211_ptr;
14305 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14306 struct sk_buff *msg;
14307 void *hdr;
14308 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14309
14310 if (!nlportid)
14311 return false;
14312
14313 msg = nlmsg_new(100, gfp);
14314 if (!msg)
14315 return true;
14316
14317 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14318 if (!hdr) {
14319 nlmsg_free(msg);
14320 return true;
14321 }
14322
14323 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14324 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14325 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14326 goto nla_put_failure;
14327
14328 genlmsg_end(msg, hdr);
14329 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14330 return true;
14331
14332 nla_put_failure:
14333 genlmsg_cancel(msg, hdr);
14334 nlmsg_free(msg);
14335 return true;
14336 }
14337
14338 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14339 const u8 *addr, gfp_t gfp)
14340 {
14341 struct wireless_dev *wdev = dev->ieee80211_ptr;
14342 bool ret;
14343
14344 trace_cfg80211_rx_spurious_frame(dev, addr);
14345
14346 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14347 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14348 trace_cfg80211_return_bool(false);
14349 return false;
14350 }
14351 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14352 addr, gfp);
14353 trace_cfg80211_return_bool(ret);
14354 return ret;
14355 }
14356 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14357
14358 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14359 const u8 *addr, gfp_t gfp)
14360 {
14361 struct wireless_dev *wdev = dev->ieee80211_ptr;
14362 bool ret;
14363
14364 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14365
14366 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14367 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14368 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14369 trace_cfg80211_return_bool(false);
14370 return false;
14371 }
14372 ret = __nl80211_unexpected_frame(dev,
14373 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14374 addr, gfp);
14375 trace_cfg80211_return_bool(ret);
14376 return ret;
14377 }
14378 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14379
14380 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14381 struct wireless_dev *wdev, u32 nlportid,
14382 int freq, int sig_dbm,
14383 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14384 {
14385 struct net_device *netdev = wdev->netdev;
14386 struct sk_buff *msg;
14387 void *hdr;
14388
14389 msg = nlmsg_new(100 + len, gfp);
14390 if (!msg)
14391 return -ENOMEM;
14392
14393 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14394 if (!hdr) {
14395 nlmsg_free(msg);
14396 return -ENOMEM;
14397 }
14398
14399 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14400 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14401 netdev->ifindex)) ||
14402 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14403 NL80211_ATTR_PAD) ||
14404 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14405 (sig_dbm &&
14406 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14407 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14408 (flags &&
14409 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14410 goto nla_put_failure;
14411
14412 genlmsg_end(msg, hdr);
14413
14414 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14415
14416 nla_put_failure:
14417 genlmsg_cancel(msg, hdr);
14418 nlmsg_free(msg);
14419 return -ENOBUFS;
14420 }
14421
14422 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14423 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14424 {
14425 struct wiphy *wiphy = wdev->wiphy;
14426 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14427 struct net_device *netdev = wdev->netdev;
14428 struct sk_buff *msg;
14429 void *hdr;
14430
14431 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14432
14433 msg = nlmsg_new(100 + len, gfp);
14434 if (!msg)
14435 return;
14436
14437 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14438 if (!hdr) {
14439 nlmsg_free(msg);
14440 return;
14441 }
14442
14443 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14444 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14445 netdev->ifindex)) ||
14446 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14447 NL80211_ATTR_PAD) ||
14448 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14449 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14450 NL80211_ATTR_PAD) ||
14451 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14452 goto nla_put_failure;
14453
14454 genlmsg_end(msg, hdr);
14455
14456 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14457 NL80211_MCGRP_MLME, gfp);
14458 return;
14459
14460 nla_put_failure:
14461 genlmsg_cancel(msg, hdr);
14462 nlmsg_free(msg);
14463 }
14464 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14465
14466 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14467 const char *mac, gfp_t gfp)
14468 {
14469 struct wireless_dev *wdev = dev->ieee80211_ptr;
14470 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14471 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14472 void **cb;
14473
14474 if (!msg)
14475 return NULL;
14476
14477 cb = (void **)msg->cb;
14478
14479 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14480 if (!cb[0]) {
14481 nlmsg_free(msg);
14482 return NULL;
14483 }
14484
14485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14486 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14487 goto nla_put_failure;
14488
14489 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14490 goto nla_put_failure;
14491
14492 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14493 if (!cb[1])
14494 goto nla_put_failure;
14495
14496 cb[2] = rdev;
14497
14498 return msg;
14499 nla_put_failure:
14500 nlmsg_free(msg);
14501 return NULL;
14502 }
14503
14504 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14505 {
14506 void **cb = (void **)msg->cb;
14507 struct cfg80211_registered_device *rdev = cb[2];
14508
14509 nla_nest_end(msg, cb[1]);
14510 genlmsg_end(msg, cb[0]);
14511
14512 memset(msg->cb, 0, sizeof(msg->cb));
14513
14514 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14515 NL80211_MCGRP_MLME, gfp);
14516 }
14517
14518 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14519 enum nl80211_cqm_rssi_threshold_event rssi_event,
14520 s32 rssi_level, gfp_t gfp)
14521 {
14522 struct sk_buff *msg;
14523 struct wireless_dev *wdev = dev->ieee80211_ptr;
14524 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14525
14526 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14527
14528 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14529 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14530 return;
14531
14532 if (wdev->cqm_config) {
14533 wdev->cqm_config->last_rssi_event_value = rssi_level;
14534
14535 cfg80211_cqm_rssi_update(rdev, dev);
14536
14537 if (rssi_level == 0)
14538 rssi_level = wdev->cqm_config->last_rssi_event_value;
14539 }
14540
14541 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14542 if (!msg)
14543 return;
14544
14545 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14546 rssi_event))
14547 goto nla_put_failure;
14548
14549 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14550 rssi_level))
14551 goto nla_put_failure;
14552
14553 cfg80211_send_cqm(msg, gfp);
14554
14555 return;
14556
14557 nla_put_failure:
14558 nlmsg_free(msg);
14559 }
14560 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14561
14562 void cfg80211_cqm_txe_notify(struct net_device *dev,
14563 const u8 *peer, u32 num_packets,
14564 u32 rate, u32 intvl, gfp_t gfp)
14565 {
14566 struct sk_buff *msg;
14567
14568 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14569 if (!msg)
14570 return;
14571
14572 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14573 goto nla_put_failure;
14574
14575 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14576 goto nla_put_failure;
14577
14578 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14579 goto nla_put_failure;
14580
14581 cfg80211_send_cqm(msg, gfp);
14582 return;
14583
14584 nla_put_failure:
14585 nlmsg_free(msg);
14586 }
14587 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14588
14589 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14590 const u8 *peer, u32 num_packets, gfp_t gfp)
14591 {
14592 struct sk_buff *msg;
14593
14594 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14595
14596 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14597 if (!msg)
14598 return;
14599
14600 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14601 goto nla_put_failure;
14602
14603 cfg80211_send_cqm(msg, gfp);
14604 return;
14605
14606 nla_put_failure:
14607 nlmsg_free(msg);
14608 }
14609 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14610
14611 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14612 {
14613 struct sk_buff *msg;
14614
14615 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14616 if (!msg)
14617 return;
14618
14619 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14620 goto nla_put_failure;
14621
14622 cfg80211_send_cqm(msg, gfp);
14623 return;
14624
14625 nla_put_failure:
14626 nlmsg_free(msg);
14627 }
14628 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14629
14630 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14631 struct net_device *netdev, const u8 *bssid,
14632 const u8 *replay_ctr, gfp_t gfp)
14633 {
14634 struct sk_buff *msg;
14635 struct nlattr *rekey_attr;
14636 void *hdr;
14637
14638 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14639 if (!msg)
14640 return;
14641
14642 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14643 if (!hdr) {
14644 nlmsg_free(msg);
14645 return;
14646 }
14647
14648 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14649 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14650 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14651 goto nla_put_failure;
14652
14653 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14654 if (!rekey_attr)
14655 goto nla_put_failure;
14656
14657 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14658 NL80211_REPLAY_CTR_LEN, replay_ctr))
14659 goto nla_put_failure;
14660
14661 nla_nest_end(msg, rekey_attr);
14662
14663 genlmsg_end(msg, hdr);
14664
14665 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14666 NL80211_MCGRP_MLME, gfp);
14667 return;
14668
14669 nla_put_failure:
14670 genlmsg_cancel(msg, hdr);
14671 nlmsg_free(msg);
14672 }
14673
14674 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14675 const u8 *replay_ctr, gfp_t gfp)
14676 {
14677 struct wireless_dev *wdev = dev->ieee80211_ptr;
14678 struct wiphy *wiphy = wdev->wiphy;
14679 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14680
14681 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14682 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14683 }
14684 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14685
14686 static void
14687 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14688 struct net_device *netdev, int index,
14689 const u8 *bssid, bool preauth, gfp_t gfp)
14690 {
14691 struct sk_buff *msg;
14692 struct nlattr *attr;
14693 void *hdr;
14694
14695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14696 if (!msg)
14697 return;
14698
14699 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14700 if (!hdr) {
14701 nlmsg_free(msg);
14702 return;
14703 }
14704
14705 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14706 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14707 goto nla_put_failure;
14708
14709 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14710 if (!attr)
14711 goto nla_put_failure;
14712
14713 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14714 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14715 (preauth &&
14716 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14717 goto nla_put_failure;
14718
14719 nla_nest_end(msg, attr);
14720
14721 genlmsg_end(msg, hdr);
14722
14723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14724 NL80211_MCGRP_MLME, gfp);
14725 return;
14726
14727 nla_put_failure:
14728 genlmsg_cancel(msg, hdr);
14729 nlmsg_free(msg);
14730 }
14731
14732 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14733 const u8 *bssid, bool preauth, gfp_t gfp)
14734 {
14735 struct wireless_dev *wdev = dev->ieee80211_ptr;
14736 struct wiphy *wiphy = wdev->wiphy;
14737 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14738
14739 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14740 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14741 }
14742 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14743
14744 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14745 struct net_device *netdev,
14746 struct cfg80211_chan_def *chandef,
14747 gfp_t gfp,
14748 enum nl80211_commands notif,
14749 u8 count)
14750 {
14751 struct sk_buff *msg;
14752 void *hdr;
14753
14754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14755 if (!msg)
14756 return;
14757
14758 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14759 if (!hdr) {
14760 nlmsg_free(msg);
14761 return;
14762 }
14763
14764 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14765 goto nla_put_failure;
14766
14767 if (nl80211_send_chandef(msg, chandef))
14768 goto nla_put_failure;
14769
14770 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14771 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14772 goto nla_put_failure;
14773
14774 genlmsg_end(msg, hdr);
14775
14776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14777 NL80211_MCGRP_MLME, gfp);
14778 return;
14779
14780 nla_put_failure:
14781 genlmsg_cancel(msg, hdr);
14782 nlmsg_free(msg);
14783 }
14784
14785 void cfg80211_ch_switch_notify(struct net_device *dev,
14786 struct cfg80211_chan_def *chandef)
14787 {
14788 struct wireless_dev *wdev = dev->ieee80211_ptr;
14789 struct wiphy *wiphy = wdev->wiphy;
14790 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14791
14792 ASSERT_WDEV_LOCK(wdev);
14793
14794 trace_cfg80211_ch_switch_notify(dev, chandef);
14795
14796 wdev->chandef = *chandef;
14797 wdev->preset_chandef = *chandef;
14798 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14799 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14800 }
14801 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14802
14803 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14804 struct cfg80211_chan_def *chandef,
14805 u8 count)
14806 {
14807 struct wireless_dev *wdev = dev->ieee80211_ptr;
14808 struct wiphy *wiphy = wdev->wiphy;
14809 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14810
14811 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14812
14813 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14814 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14815 }
14816 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14817
14818 void
14819 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14820 const struct cfg80211_chan_def *chandef,
14821 enum nl80211_radar_event event,
14822 struct net_device *netdev, gfp_t gfp)
14823 {
14824 struct sk_buff *msg;
14825 void *hdr;
14826
14827 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14828 if (!msg)
14829 return;
14830
14831 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14832 if (!hdr) {
14833 nlmsg_free(msg);
14834 return;
14835 }
14836
14837 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14838 goto nla_put_failure;
14839
14840 /* NOP and radar events don't need a netdev parameter */
14841 if (netdev) {
14842 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14843
14844 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14845 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14846 NL80211_ATTR_PAD))
14847 goto nla_put_failure;
14848 }
14849
14850 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14851 goto nla_put_failure;
14852
14853 if (nl80211_send_chandef(msg, chandef))
14854 goto nla_put_failure;
14855
14856 genlmsg_end(msg, hdr);
14857
14858 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14859 NL80211_MCGRP_MLME, gfp);
14860 return;
14861
14862 nla_put_failure:
14863 genlmsg_cancel(msg, hdr);
14864 nlmsg_free(msg);
14865 }
14866
14867 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14868 u64 cookie, bool acked, gfp_t gfp)
14869 {
14870 struct wireless_dev *wdev = dev->ieee80211_ptr;
14871 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14872 struct sk_buff *msg;
14873 void *hdr;
14874
14875 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14876
14877 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14878
14879 if (!msg)
14880 return;
14881
14882 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14883 if (!hdr) {
14884 nlmsg_free(msg);
14885 return;
14886 }
14887
14888 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14889 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14890 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14891 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14892 NL80211_ATTR_PAD) ||
14893 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14894 goto nla_put_failure;
14895
14896 genlmsg_end(msg, hdr);
14897
14898 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14899 NL80211_MCGRP_MLME, gfp);
14900 return;
14901
14902 nla_put_failure:
14903 genlmsg_cancel(msg, hdr);
14904 nlmsg_free(msg);
14905 }
14906 EXPORT_SYMBOL(cfg80211_probe_status);
14907
14908 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14909 const u8 *frame, size_t len,
14910 int freq, int sig_dbm)
14911 {
14912 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14913 struct sk_buff *msg;
14914 void *hdr;
14915 struct cfg80211_beacon_registration *reg;
14916
14917 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14918
14919 spin_lock_bh(&rdev->beacon_registrations_lock);
14920 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14921 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14922 if (!msg) {
14923 spin_unlock_bh(&rdev->beacon_registrations_lock);
14924 return;
14925 }
14926
14927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14928 if (!hdr)
14929 goto nla_put_failure;
14930
14931 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14932 (freq &&
14933 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14934 (sig_dbm &&
14935 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14936 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14937 goto nla_put_failure;
14938
14939 genlmsg_end(msg, hdr);
14940
14941 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14942 }
14943 spin_unlock_bh(&rdev->beacon_registrations_lock);
14944 return;
14945
14946 nla_put_failure:
14947 spin_unlock_bh(&rdev->beacon_registrations_lock);
14948 if (hdr)
14949 genlmsg_cancel(msg, hdr);
14950 nlmsg_free(msg);
14951 }
14952 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14953
14954 #ifdef CONFIG_PM
14955 static int cfg80211_net_detect_results(struct sk_buff *msg,
14956 struct cfg80211_wowlan_wakeup *wakeup)
14957 {
14958 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14959 struct nlattr *nl_results, *nl_match, *nl_freqs;
14960 int i, j;
14961
14962 nl_results = nla_nest_start(
14963 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14964 if (!nl_results)
14965 return -EMSGSIZE;
14966
14967 for (i = 0; i < nd->n_matches; i++) {
14968 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14969
14970 nl_match = nla_nest_start(msg, i);
14971 if (!nl_match)
14972 break;
14973
14974 /* The SSID attribute is optional in nl80211, but for
14975 * simplicity reasons it's always present in the
14976 * cfg80211 structure. If a driver can't pass the
14977 * SSID, that needs to be changed. A zero length SSID
14978 * is still a valid SSID (wildcard), so it cannot be
14979 * used for this purpose.
14980 */
14981 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14982 match->ssid.ssid)) {
14983 nla_nest_cancel(msg, nl_match);
14984 goto out;
14985 }
14986
14987 if (match->n_channels) {
14988 nl_freqs = nla_nest_start(
14989 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14990 if (!nl_freqs) {
14991 nla_nest_cancel(msg, nl_match);
14992 goto out;
14993 }
14994
14995 for (j = 0; j < match->n_channels; j++) {
14996 if (nla_put_u32(msg, j, match->channels[j])) {
14997 nla_nest_cancel(msg, nl_freqs);
14998 nla_nest_cancel(msg, nl_match);
14999 goto out;
15000 }
15001 }
15002
15003 nla_nest_end(msg, nl_freqs);
15004 }
15005
15006 nla_nest_end(msg, nl_match);
15007 }
15008
15009 out:
15010 nla_nest_end(msg, nl_results);
15011 return 0;
15012 }
15013
15014 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15015 struct cfg80211_wowlan_wakeup *wakeup,
15016 gfp_t gfp)
15017 {
15018 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15019 struct sk_buff *msg;
15020 void *hdr;
15021 int size = 200;
15022
15023 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15024
15025 if (wakeup)
15026 size += wakeup->packet_present_len;
15027
15028 msg = nlmsg_new(size, gfp);
15029 if (!msg)
15030 return;
15031
15032 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15033 if (!hdr)
15034 goto free_msg;
15035
15036 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15037 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15038 NL80211_ATTR_PAD))
15039 goto free_msg;
15040
15041 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15042 wdev->netdev->ifindex))
15043 goto free_msg;
15044
15045 if (wakeup) {
15046 struct nlattr *reasons;
15047
15048 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15049 if (!reasons)
15050 goto free_msg;
15051
15052 if (wakeup->disconnect &&
15053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15054 goto free_msg;
15055 if (wakeup->magic_pkt &&
15056 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15057 goto free_msg;
15058 if (wakeup->gtk_rekey_failure &&
15059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15060 goto free_msg;
15061 if (wakeup->eap_identity_req &&
15062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15063 goto free_msg;
15064 if (wakeup->four_way_handshake &&
15065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15066 goto free_msg;
15067 if (wakeup->rfkill_release &&
15068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15069 goto free_msg;
15070
15071 if (wakeup->pattern_idx >= 0 &&
15072 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15073 wakeup->pattern_idx))
15074 goto free_msg;
15075
15076 if (wakeup->tcp_match &&
15077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15078 goto free_msg;
15079
15080 if (wakeup->tcp_connlost &&
15081 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15082 goto free_msg;
15083
15084 if (wakeup->tcp_nomoretokens &&
15085 nla_put_flag(msg,
15086 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15087 goto free_msg;
15088
15089 if (wakeup->packet) {
15090 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15091 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15092
15093 if (!wakeup->packet_80211) {
15094 pkt_attr =
15095 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15096 len_attr =
15097 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15098 }
15099
15100 if (wakeup->packet_len &&
15101 nla_put_u32(msg, len_attr, wakeup->packet_len))
15102 goto free_msg;
15103
15104 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15105 wakeup->packet))
15106 goto free_msg;
15107 }
15108
15109 if (wakeup->net_detect &&
15110 cfg80211_net_detect_results(msg, wakeup))
15111 goto free_msg;
15112
15113 nla_nest_end(msg, reasons);
15114 }
15115
15116 genlmsg_end(msg, hdr);
15117
15118 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15119 NL80211_MCGRP_MLME, gfp);
15120 return;
15121
15122 free_msg:
15123 nlmsg_free(msg);
15124 }
15125 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15126 #endif
15127
15128 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15129 enum nl80211_tdls_operation oper,
15130 u16 reason_code, gfp_t gfp)
15131 {
15132 struct wireless_dev *wdev = dev->ieee80211_ptr;
15133 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15134 struct sk_buff *msg;
15135 void *hdr;
15136
15137 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15138 reason_code);
15139
15140 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15141 if (!msg)
15142 return;
15143
15144 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15145 if (!hdr) {
15146 nlmsg_free(msg);
15147 return;
15148 }
15149
15150 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15151 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15152 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15153 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15154 (reason_code > 0 &&
15155 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15156 goto nla_put_failure;
15157
15158 genlmsg_end(msg, hdr);
15159
15160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15161 NL80211_MCGRP_MLME, gfp);
15162 return;
15163
15164 nla_put_failure:
15165 genlmsg_cancel(msg, hdr);
15166 nlmsg_free(msg);
15167 }
15168 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15169
15170 static int nl80211_netlink_notify(struct notifier_block * nb,
15171 unsigned long state,
15172 void *_notify)
15173 {
15174 struct netlink_notify *notify = _notify;
15175 struct cfg80211_registered_device *rdev;
15176 struct wireless_dev *wdev;
15177 struct cfg80211_beacon_registration *reg, *tmp;
15178
15179 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15180 return NOTIFY_DONE;
15181
15182 rcu_read_lock();
15183
15184 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15185 struct cfg80211_sched_scan_request *sched_scan_req;
15186
15187 list_for_each_entry_rcu(sched_scan_req,
15188 &rdev->sched_scan_req_list,
15189 list) {
15190 if (sched_scan_req->owner_nlportid == notify->portid) {
15191 sched_scan_req->nl_owner_dead = true;
15192 schedule_work(&rdev->sched_scan_stop_wk);
15193 }
15194 }
15195
15196 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15197 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15198
15199 if (wdev->owner_nlportid == notify->portid) {
15200 wdev->nl_owner_dead = true;
15201 schedule_work(&rdev->destroy_work);
15202 } else if (wdev->conn_owner_nlportid == notify->portid) {
15203 schedule_work(&wdev->disconnect_wk);
15204 }
15205 }
15206
15207 spin_lock_bh(&rdev->beacon_registrations_lock);
15208 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15209 list) {
15210 if (reg->nlportid == notify->portid) {
15211 list_del(&reg->list);
15212 kfree(reg);
15213 break;
15214 }
15215 }
15216 spin_unlock_bh(&rdev->beacon_registrations_lock);
15217 }
15218
15219 rcu_read_unlock();
15220
15221 /*
15222 * It is possible that the user space process that is controlling the
15223 * indoor setting disappeared, so notify the regulatory core.
15224 */
15225 regulatory_netlink_notify(notify->portid);
15226 return NOTIFY_OK;
15227 }
15228
15229 static struct notifier_block nl80211_netlink_notifier = {
15230 .notifier_call = nl80211_netlink_notify,
15231 };
15232
15233 void cfg80211_ft_event(struct net_device *netdev,
15234 struct cfg80211_ft_event_params *ft_event)
15235 {
15236 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15238 struct sk_buff *msg;
15239 void *hdr;
15240
15241 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15242
15243 if (!ft_event->target_ap)
15244 return;
15245
15246 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15247 if (!msg)
15248 return;
15249
15250 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15251 if (!hdr)
15252 goto out;
15253
15254 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15255 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15256 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15257 goto out;
15258
15259 if (ft_event->ies &&
15260 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15261 goto out;
15262 if (ft_event->ric_ies &&
15263 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15264 ft_event->ric_ies))
15265 goto out;
15266
15267 genlmsg_end(msg, hdr);
15268
15269 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15270 NL80211_MCGRP_MLME, GFP_KERNEL);
15271 return;
15272 out:
15273 nlmsg_free(msg);
15274 }
15275 EXPORT_SYMBOL(cfg80211_ft_event);
15276
15277 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15278 {
15279 struct cfg80211_registered_device *rdev;
15280 struct sk_buff *msg;
15281 void *hdr;
15282 u32 nlportid;
15283
15284 rdev = wiphy_to_rdev(wdev->wiphy);
15285 if (!rdev->crit_proto_nlportid)
15286 return;
15287
15288 nlportid = rdev->crit_proto_nlportid;
15289 rdev->crit_proto_nlportid = 0;
15290
15291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15292 if (!msg)
15293 return;
15294
15295 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15296 if (!hdr)
15297 goto nla_put_failure;
15298
15299 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15300 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15301 NL80211_ATTR_PAD))
15302 goto nla_put_failure;
15303
15304 genlmsg_end(msg, hdr);
15305
15306 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15307 return;
15308
15309 nla_put_failure:
15310 if (hdr)
15311 genlmsg_cancel(msg, hdr);
15312 nlmsg_free(msg);
15313 }
15314 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15315
15316 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15317 {
15318 struct wiphy *wiphy = wdev->wiphy;
15319 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15320 struct sk_buff *msg;
15321 void *hdr;
15322
15323 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15324 if (!msg)
15325 return;
15326
15327 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15328 if (!hdr)
15329 goto out;
15330
15331 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15332 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15333 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15334 NL80211_ATTR_PAD))
15335 goto out;
15336
15337 genlmsg_end(msg, hdr);
15338
15339 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15340 NL80211_MCGRP_MLME, GFP_KERNEL);
15341 return;
15342 out:
15343 nlmsg_free(msg);
15344 }
15345
15346 /* initialisation/exit functions */
15347
15348 int __init nl80211_init(void)
15349 {
15350 int err;
15351
15352 err = genl_register_family(&nl80211_fam);
15353 if (err)
15354 return err;
15355
15356 err = netlink_register_notifier(&nl80211_netlink_notifier);
15357 if (err)
15358 goto err_out;
15359
15360 return 0;
15361 err_out:
15362 genl_unregister_family(&nl80211_fam);
15363 return err;
15364 }
15365
15366 void nl80211_exit(void)
15367 {
15368 netlink_unregister_notifier(&nl80211_netlink_notifier);
15369 genl_unregister_family(&nl80211_fam);
15370 }
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