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nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT
[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 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3520 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3521 mcs[ridx] |= rbit;
3522 else
3523 return false;
3524 }
3525
3526 return true;
3527 }
3528
3529 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3530 {
3531 u16 mcs_mask = 0;
3532
3533 switch (vht_mcs_map) {
3534 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3535 break;
3536 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3537 mcs_mask = 0x00FF;
3538 break;
3539 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3540 mcs_mask = 0x01FF;
3541 break;
3542 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3543 mcs_mask = 0x03FF;
3544 break;
3545 default:
3546 break;
3547 }
3548
3549 return mcs_mask;
3550 }
3551
3552 static void vht_build_mcs_mask(u16 vht_mcs_map,
3553 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3554 {
3555 u8 nss;
3556
3557 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3558 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3559 vht_mcs_map >>= 2;
3560 }
3561 }
3562
3563 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3564 struct nl80211_txrate_vht *txrate,
3565 u16 mcs[NL80211_VHT_NSS_MAX])
3566 {
3567 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3568 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3569 u8 i;
3570
3571 if (!sband->vht_cap.vht_supported)
3572 return false;
3573
3574 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3575
3576 /* Build vht_mcs_mask from VHT capabilities */
3577 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3578
3579 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3580 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3581 mcs[i] = txrate->mcs[i];
3582 else
3583 return false;
3584 }
3585
3586 return true;
3587 }
3588
3589 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3590 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3591 .len = NL80211_MAX_SUPP_RATES },
3592 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3593 .len = NL80211_MAX_SUPP_HT_RATES },
3594 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3595 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3596 };
3597
3598 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3599 struct cfg80211_bitrate_mask *mask)
3600 {
3601 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3603 int rem, i;
3604 struct nlattr *tx_rates;
3605 struct ieee80211_supported_band *sband;
3606 u16 vht_tx_mcs_map;
3607
3608 memset(mask, 0, sizeof(*mask));
3609 /* Default to all rates enabled */
3610 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3611 sband = rdev->wiphy.bands[i];
3612
3613 if (!sband)
3614 continue;
3615
3616 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3617 memcpy(mask->control[i].ht_mcs,
3618 sband->ht_cap.mcs.rx_mask,
3619 sizeof(mask->control[i].ht_mcs));
3620
3621 if (!sband->vht_cap.vht_supported)
3622 continue;
3623
3624 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3625 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3626 }
3627
3628 /* if no rates are given set it back to the defaults */
3629 if (!info->attrs[NL80211_ATTR_TX_RATES])
3630 goto out;
3631
3632 /* The nested attribute uses enum nl80211_band as the index. This maps
3633 * directly to the enum nl80211_band values used in cfg80211.
3634 */
3635 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3636 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3637 enum nl80211_band band = nla_type(tx_rates);
3638 int err;
3639
3640 if (band < 0 || band >= NUM_NL80211_BANDS)
3641 return -EINVAL;
3642 sband = rdev->wiphy.bands[band];
3643 if (sband == NULL)
3644 return -EINVAL;
3645 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3646 nl80211_txattr_policy, info->extack);
3647 if (err)
3648 return err;
3649 if (tb[NL80211_TXRATE_LEGACY]) {
3650 mask->control[band].legacy = rateset_to_mask(
3651 sband,
3652 nla_data(tb[NL80211_TXRATE_LEGACY]),
3653 nla_len(tb[NL80211_TXRATE_LEGACY]));
3654 if ((mask->control[band].legacy == 0) &&
3655 nla_len(tb[NL80211_TXRATE_LEGACY]))
3656 return -EINVAL;
3657 }
3658 if (tb[NL80211_TXRATE_HT]) {
3659 if (!ht_rateset_to_mask(
3660 sband,
3661 nla_data(tb[NL80211_TXRATE_HT]),
3662 nla_len(tb[NL80211_TXRATE_HT]),
3663 mask->control[band].ht_mcs))
3664 return -EINVAL;
3665 }
3666 if (tb[NL80211_TXRATE_VHT]) {
3667 if (!vht_set_mcs_mask(
3668 sband,
3669 nla_data(tb[NL80211_TXRATE_VHT]),
3670 mask->control[band].vht_mcs))
3671 return -EINVAL;
3672 }
3673 if (tb[NL80211_TXRATE_GI]) {
3674 mask->control[band].gi =
3675 nla_get_u8(tb[NL80211_TXRATE_GI]);
3676 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3677 return -EINVAL;
3678 }
3679
3680 if (mask->control[band].legacy == 0) {
3681 /* don't allow empty legacy rates if HT or VHT
3682 * are not even supported.
3683 */
3684 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3685 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3686 return -EINVAL;
3687
3688 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3689 if (mask->control[band].ht_mcs[i])
3690 goto out;
3691
3692 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3693 if (mask->control[band].vht_mcs[i])
3694 goto out;
3695
3696 /* legacy and mcs rates may not be both empty */
3697 return -EINVAL;
3698 }
3699 }
3700
3701 out:
3702 return 0;
3703 }
3704
3705 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3706 enum nl80211_band band,
3707 struct cfg80211_bitrate_mask *beacon_rate)
3708 {
3709 u32 count_ht, count_vht, i;
3710 u32 rate = beacon_rate->control[band].legacy;
3711
3712 /* Allow only one rate */
3713 if (hweight32(rate) > 1)
3714 return -EINVAL;
3715
3716 count_ht = 0;
3717 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3718 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3719 return -EINVAL;
3720 } else if (beacon_rate->control[band].ht_mcs[i]) {
3721 count_ht++;
3722 if (count_ht > 1)
3723 return -EINVAL;
3724 }
3725 if (count_ht && rate)
3726 return -EINVAL;
3727 }
3728
3729 count_vht = 0;
3730 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3731 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3732 return -EINVAL;
3733 } else if (beacon_rate->control[band].vht_mcs[i]) {
3734 count_vht++;
3735 if (count_vht > 1)
3736 return -EINVAL;
3737 }
3738 if (count_vht && rate)
3739 return -EINVAL;
3740 }
3741
3742 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3743 return -EINVAL;
3744
3745 if (rate &&
3746 !wiphy_ext_feature_isset(&rdev->wiphy,
3747 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3748 return -EINVAL;
3749 if (count_ht &&
3750 !wiphy_ext_feature_isset(&rdev->wiphy,
3751 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3752 return -EINVAL;
3753 if (count_vht &&
3754 !wiphy_ext_feature_isset(&rdev->wiphy,
3755 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3756 return -EINVAL;
3757
3758 return 0;
3759 }
3760
3761 static int nl80211_parse_beacon(struct nlattr *attrs[],
3762 struct cfg80211_beacon_data *bcn)
3763 {
3764 bool haveinfo = false;
3765
3766 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3767 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3768 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3769 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3770 return -EINVAL;
3771
3772 memset(bcn, 0, sizeof(*bcn));
3773
3774 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3775 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3776 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3777 if (!bcn->head_len)
3778 return -EINVAL;
3779 haveinfo = true;
3780 }
3781
3782 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3783 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3784 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3785 haveinfo = true;
3786 }
3787
3788 if (!haveinfo)
3789 return -EINVAL;
3790
3791 if (attrs[NL80211_ATTR_IE]) {
3792 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3793 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3794 }
3795
3796 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3797 bcn->proberesp_ies =
3798 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3799 bcn->proberesp_ies_len =
3800 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3801 }
3802
3803 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3804 bcn->assocresp_ies =
3805 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3806 bcn->assocresp_ies_len =
3807 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3808 }
3809
3810 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3811 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3812 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3813 }
3814
3815 return 0;
3816 }
3817
3818 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3819 const u8 *rates)
3820 {
3821 int i;
3822
3823 if (!rates)
3824 return;
3825
3826 for (i = 0; i < rates[1]; i++) {
3827 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3828 params->ht_required = true;
3829 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3830 params->vht_required = true;
3831 }
3832 }
3833
3834 /*
3835 * Since the nl80211 API didn't include, from the beginning, attributes about
3836 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3837 * benefit of drivers that rebuild IEs in the firmware.
3838 */
3839 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3840 {
3841 const struct cfg80211_beacon_data *bcn = &params->beacon;
3842 size_t ies_len = bcn->tail_len;
3843 const u8 *ies = bcn->tail;
3844 const u8 *rates;
3845 const u8 *cap;
3846
3847 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3848 nl80211_check_ap_rate_selectors(params, rates);
3849
3850 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3851 nl80211_check_ap_rate_selectors(params, rates);
3852
3853 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3854 if (cap && cap[1] >= sizeof(*params->ht_cap))
3855 params->ht_cap = (void *)(cap + 2);
3856 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3857 if (cap && cap[1] >= sizeof(*params->vht_cap))
3858 params->vht_cap = (void *)(cap + 2);
3859 }
3860
3861 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3862 struct cfg80211_ap_settings *params)
3863 {
3864 struct wireless_dev *wdev;
3865 bool ret = false;
3866
3867 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3868 if (wdev->iftype != NL80211_IFTYPE_AP &&
3869 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3870 continue;
3871
3872 if (!wdev->preset_chandef.chan)
3873 continue;
3874
3875 params->chandef = wdev->preset_chandef;
3876 ret = true;
3877 break;
3878 }
3879
3880 return ret;
3881 }
3882
3883 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3884 enum nl80211_auth_type auth_type,
3885 enum nl80211_commands cmd)
3886 {
3887 if (auth_type > NL80211_AUTHTYPE_MAX)
3888 return false;
3889
3890 switch (cmd) {
3891 case NL80211_CMD_AUTHENTICATE:
3892 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3893 auth_type == NL80211_AUTHTYPE_SAE)
3894 return false;
3895 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3896 NL80211_EXT_FEATURE_FILS_STA) &&
3897 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3898 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3899 auth_type == NL80211_AUTHTYPE_FILS_PK))
3900 return false;
3901 return true;
3902 case NL80211_CMD_CONNECT:
3903 /* SAE not supported yet */
3904 if (auth_type == NL80211_AUTHTYPE_SAE)
3905 return false;
3906 /* FILS with SK PFS or PK not supported yet */
3907 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3908 auth_type == NL80211_AUTHTYPE_FILS_PK)
3909 return false;
3910 if (!wiphy_ext_feature_isset(
3911 &rdev->wiphy,
3912 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3913 auth_type == NL80211_AUTHTYPE_FILS_SK)
3914 return false;
3915 return true;
3916 case NL80211_CMD_START_AP:
3917 /* SAE not supported yet */
3918 if (auth_type == NL80211_AUTHTYPE_SAE)
3919 return false;
3920 /* FILS not supported yet */
3921 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3922 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3923 auth_type == NL80211_AUTHTYPE_FILS_PK)
3924 return false;
3925 return true;
3926 default:
3927 return false;
3928 }
3929 }
3930
3931 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3932 {
3933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3934 struct net_device *dev = info->user_ptr[1];
3935 struct wireless_dev *wdev = dev->ieee80211_ptr;
3936 struct cfg80211_ap_settings params;
3937 int err;
3938
3939 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3940 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3941 return -EOPNOTSUPP;
3942
3943 if (!rdev->ops->start_ap)
3944 return -EOPNOTSUPP;
3945
3946 if (wdev->beacon_interval)
3947 return -EALREADY;
3948
3949 memset(&params, 0, sizeof(params));
3950
3951 /* these are required for START_AP */
3952 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3953 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3954 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3955 return -EINVAL;
3956
3957 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3958 if (err)
3959 return err;
3960
3961 params.beacon_interval =
3962 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3963 params.dtim_period =
3964 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3965
3966 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3967 params.beacon_interval);
3968 if (err)
3969 return err;
3970
3971 /*
3972 * In theory, some of these attributes should be required here
3973 * but since they were not used when the command was originally
3974 * added, keep them optional for old user space programs to let
3975 * them continue to work with drivers that do not need the
3976 * additional information -- drivers must check!
3977 */
3978 if (info->attrs[NL80211_ATTR_SSID]) {
3979 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3980 params.ssid_len =
3981 nla_len(info->attrs[NL80211_ATTR_SSID]);
3982 if (params.ssid_len == 0 ||
3983 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3984 return -EINVAL;
3985 }
3986
3987 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3988 params.hidden_ssid = nla_get_u32(
3989 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3990 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3991 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3992 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3993 return -EINVAL;
3994 }
3995
3996 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3997
3998 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3999 params.auth_type = nla_get_u32(
4000 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4001 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4002 NL80211_CMD_START_AP))
4003 return -EINVAL;
4004 } else
4005 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4006
4007 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4008 NL80211_MAX_NR_CIPHER_SUITES);
4009 if (err)
4010 return err;
4011
4012 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4013 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4014 return -EOPNOTSUPP;
4015 params.inactivity_timeout = nla_get_u16(
4016 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4017 }
4018
4019 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4020 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4021 return -EINVAL;
4022 params.p2p_ctwindow =
4023 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4024 if (params.p2p_ctwindow > 127)
4025 return -EINVAL;
4026 if (params.p2p_ctwindow != 0 &&
4027 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4028 return -EINVAL;
4029 }
4030
4031 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4032 u8 tmp;
4033
4034 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4035 return -EINVAL;
4036 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4037 if (tmp > 1)
4038 return -EINVAL;
4039 params.p2p_opp_ps = tmp;
4040 if (params.p2p_opp_ps != 0 &&
4041 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4042 return -EINVAL;
4043 }
4044
4045 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4046 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4047 if (err)
4048 return err;
4049 } else if (wdev->preset_chandef.chan) {
4050 params.chandef = wdev->preset_chandef;
4051 } else if (!nl80211_get_ap_channel(rdev, &params))
4052 return -EINVAL;
4053
4054 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4055 wdev->iftype))
4056 return -EINVAL;
4057
4058 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4059 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4060 if (err)
4061 return err;
4062
4063 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4064 &params.beacon_rate);
4065 if (err)
4066 return err;
4067 }
4068
4069 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4070 params.smps_mode =
4071 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4072 switch (params.smps_mode) {
4073 case NL80211_SMPS_OFF:
4074 break;
4075 case NL80211_SMPS_STATIC:
4076 if (!(rdev->wiphy.features &
4077 NL80211_FEATURE_STATIC_SMPS))
4078 return -EINVAL;
4079 break;
4080 case NL80211_SMPS_DYNAMIC:
4081 if (!(rdev->wiphy.features &
4082 NL80211_FEATURE_DYNAMIC_SMPS))
4083 return -EINVAL;
4084 break;
4085 default:
4086 return -EINVAL;
4087 }
4088 } else {
4089 params.smps_mode = NL80211_SMPS_OFF;
4090 }
4091
4092 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4093 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4094 return -EOPNOTSUPP;
4095
4096 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4097 params.acl = parse_acl_data(&rdev->wiphy, info);
4098 if (IS_ERR(params.acl))
4099 return PTR_ERR(params.acl);
4100 }
4101
4102 nl80211_calculate_ap_params(&params);
4103
4104 wdev_lock(wdev);
4105 err = rdev_start_ap(rdev, dev, &params);
4106 if (!err) {
4107 wdev->preset_chandef = params.chandef;
4108 wdev->beacon_interval = params.beacon_interval;
4109 wdev->chandef = params.chandef;
4110 wdev->ssid_len = params.ssid_len;
4111 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4112 }
4113 wdev_unlock(wdev);
4114
4115 kfree(params.acl);
4116
4117 return err;
4118 }
4119
4120 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4121 {
4122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4123 struct net_device *dev = info->user_ptr[1];
4124 struct wireless_dev *wdev = dev->ieee80211_ptr;
4125 struct cfg80211_beacon_data params;
4126 int err;
4127
4128 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4129 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4130 return -EOPNOTSUPP;
4131
4132 if (!rdev->ops->change_beacon)
4133 return -EOPNOTSUPP;
4134
4135 if (!wdev->beacon_interval)
4136 return -EINVAL;
4137
4138 err = nl80211_parse_beacon(info->attrs, &params);
4139 if (err)
4140 return err;
4141
4142 wdev_lock(wdev);
4143 err = rdev_change_beacon(rdev, dev, &params);
4144 wdev_unlock(wdev);
4145
4146 return err;
4147 }
4148
4149 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4150 {
4151 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4152 struct net_device *dev = info->user_ptr[1];
4153
4154 return cfg80211_stop_ap(rdev, dev, false);
4155 }
4156
4157 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4158 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4159 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4160 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4161 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4162 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4163 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4164 };
4165
4166 static int parse_station_flags(struct genl_info *info,
4167 enum nl80211_iftype iftype,
4168 struct station_parameters *params)
4169 {
4170 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4171 struct nlattr *nla;
4172 int flag;
4173
4174 /*
4175 * Try parsing the new attribute first so userspace
4176 * can specify both for older kernels.
4177 */
4178 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4179 if (nla) {
4180 struct nl80211_sta_flag_update *sta_flags;
4181
4182 sta_flags = nla_data(nla);
4183 params->sta_flags_mask = sta_flags->mask;
4184 params->sta_flags_set = sta_flags->set;
4185 params->sta_flags_set &= params->sta_flags_mask;
4186 if ((params->sta_flags_mask |
4187 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4188 return -EINVAL;
4189 return 0;
4190 }
4191
4192 /* if present, parse the old attribute */
4193
4194 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4195 if (!nla)
4196 return 0;
4197
4198 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4199 sta_flags_policy, info->extack))
4200 return -EINVAL;
4201
4202 /*
4203 * Only allow certain flags for interface types so that
4204 * other attributes are silently ignored. Remember that
4205 * this is backward compatibility code with old userspace
4206 * and shouldn't be hit in other cases anyway.
4207 */
4208 switch (iftype) {
4209 case NL80211_IFTYPE_AP:
4210 case NL80211_IFTYPE_AP_VLAN:
4211 case NL80211_IFTYPE_P2P_GO:
4212 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4213 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4214 BIT(NL80211_STA_FLAG_WME) |
4215 BIT(NL80211_STA_FLAG_MFP);
4216 break;
4217 case NL80211_IFTYPE_P2P_CLIENT:
4218 case NL80211_IFTYPE_STATION:
4219 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4220 BIT(NL80211_STA_FLAG_TDLS_PEER);
4221 break;
4222 case NL80211_IFTYPE_MESH_POINT:
4223 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4224 BIT(NL80211_STA_FLAG_MFP) |
4225 BIT(NL80211_STA_FLAG_AUTHORIZED);
4226 default:
4227 return -EINVAL;
4228 }
4229
4230 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4231 if (flags[flag]) {
4232 params->sta_flags_set |= (1<<flag);
4233
4234 /* no longer support new API additions in old API */
4235 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4236 return -EINVAL;
4237 }
4238 }
4239
4240 return 0;
4241 }
4242
4243 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4244 int attr)
4245 {
4246 struct nlattr *rate;
4247 u32 bitrate;
4248 u16 bitrate_compat;
4249 enum nl80211_rate_info rate_flg;
4250
4251 rate = nla_nest_start(msg, attr);
4252 if (!rate)
4253 return false;
4254
4255 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4256 bitrate = cfg80211_calculate_bitrate(info);
4257 /* report 16-bit bitrate only if we can */
4258 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4259 if (bitrate > 0 &&
4260 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4261 return false;
4262 if (bitrate_compat > 0 &&
4263 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4264 return false;
4265
4266 switch (info->bw) {
4267 case RATE_INFO_BW_5:
4268 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4269 break;
4270 case RATE_INFO_BW_10:
4271 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4272 break;
4273 default:
4274 WARN_ON(1);
4275 /* fall through */
4276 case RATE_INFO_BW_20:
4277 rate_flg = 0;
4278 break;
4279 case RATE_INFO_BW_40:
4280 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4281 break;
4282 case RATE_INFO_BW_80:
4283 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4284 break;
4285 case RATE_INFO_BW_160:
4286 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4287 break;
4288 }
4289
4290 if (rate_flg && nla_put_flag(msg, rate_flg))
4291 return false;
4292
4293 if (info->flags & RATE_INFO_FLAGS_MCS) {
4294 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4295 return false;
4296 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4297 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4298 return false;
4299 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4300 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4301 return false;
4302 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4303 return false;
4304 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4305 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4306 return false;
4307 }
4308
4309 nla_nest_end(msg, rate);
4310 return true;
4311 }
4312
4313 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4314 int id)
4315 {
4316 void *attr;
4317 int i = 0;
4318
4319 if (!mask)
4320 return true;
4321
4322 attr = nla_nest_start(msg, id);
4323 if (!attr)
4324 return false;
4325
4326 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4327 if (!(mask & BIT(i)))
4328 continue;
4329
4330 if (nla_put_u8(msg, i, signal[i]))
4331 return false;
4332 }
4333
4334 nla_nest_end(msg, attr);
4335
4336 return true;
4337 }
4338
4339 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4340 u32 seq, int flags,
4341 struct cfg80211_registered_device *rdev,
4342 struct net_device *dev,
4343 const u8 *mac_addr, struct station_info *sinfo)
4344 {
4345 void *hdr;
4346 struct nlattr *sinfoattr, *bss_param;
4347
4348 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4349 if (!hdr)
4350 return -1;
4351
4352 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4353 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4354 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4355 goto nla_put_failure;
4356
4357 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4358 if (!sinfoattr)
4359 goto nla_put_failure;
4360
4361 #define PUT_SINFO(attr, memb, type) do { \
4362 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4363 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4364 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4365 sinfo->memb)) \
4366 goto nla_put_failure; \
4367 } while (0)
4368 #define PUT_SINFO_U64(attr, memb) do { \
4369 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4370 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4371 sinfo->memb, NL80211_STA_INFO_PAD)) \
4372 goto nla_put_failure; \
4373 } while (0)
4374
4375 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4376 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4377
4378 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4379 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4380 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4381 (u32)sinfo->rx_bytes))
4382 goto nla_put_failure;
4383
4384 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4385 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4386 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4387 (u32)sinfo->tx_bytes))
4388 goto nla_put_failure;
4389
4390 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4391 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4392 PUT_SINFO(LLID, llid, u16);
4393 PUT_SINFO(PLID, plid, u16);
4394 PUT_SINFO(PLINK_STATE, plink_state, u8);
4395 PUT_SINFO_U64(RX_DURATION, rx_duration);
4396
4397 switch (rdev->wiphy.signal_type) {
4398 case CFG80211_SIGNAL_TYPE_MBM:
4399 PUT_SINFO(SIGNAL, signal, u8);
4400 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4401 break;
4402 default:
4403 break;
4404 }
4405 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4406 if (!nl80211_put_signal(msg, sinfo->chains,
4407 sinfo->chain_signal,
4408 NL80211_STA_INFO_CHAIN_SIGNAL))
4409 goto nla_put_failure;
4410 }
4411 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4412 if (!nl80211_put_signal(msg, sinfo->chains,
4413 sinfo->chain_signal_avg,
4414 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4415 goto nla_put_failure;
4416 }
4417 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4418 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4419 NL80211_STA_INFO_TX_BITRATE))
4420 goto nla_put_failure;
4421 }
4422 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4423 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4424 NL80211_STA_INFO_RX_BITRATE))
4425 goto nla_put_failure;
4426 }
4427
4428 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4429 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4430 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4431 PUT_SINFO(TX_FAILED, tx_failed, u32);
4432 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4433 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4434 PUT_SINFO(LOCAL_PM, local_pm, u32);
4435 PUT_SINFO(PEER_PM, peer_pm, u32);
4436 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4437
4438 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4439 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4440 if (!bss_param)
4441 goto nla_put_failure;
4442
4443 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4444 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4445 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4446 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4447 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4448 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4449 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4450 sinfo->bss_param.dtim_period) ||
4451 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4452 sinfo->bss_param.beacon_interval))
4453 goto nla_put_failure;
4454
4455 nla_nest_end(msg, bss_param);
4456 }
4457 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4458 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4459 sizeof(struct nl80211_sta_flag_update),
4460 &sinfo->sta_flags))
4461 goto nla_put_failure;
4462
4463 PUT_SINFO_U64(T_OFFSET, t_offset);
4464 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4465 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4466 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4467
4468 #undef PUT_SINFO
4469 #undef PUT_SINFO_U64
4470
4471 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4472 struct nlattr *tidsattr;
4473 int tid;
4474
4475 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4476 if (!tidsattr)
4477 goto nla_put_failure;
4478
4479 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4480 struct cfg80211_tid_stats *tidstats;
4481 struct nlattr *tidattr;
4482
4483 tidstats = &sinfo->pertid[tid];
4484
4485 if (!tidstats->filled)
4486 continue;
4487
4488 tidattr = nla_nest_start(msg, tid + 1);
4489 if (!tidattr)
4490 goto nla_put_failure;
4491
4492 #define PUT_TIDVAL_U64(attr, memb) do { \
4493 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4494 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4495 tidstats->memb, NL80211_TID_STATS_PAD)) \
4496 goto nla_put_failure; \
4497 } while (0)
4498
4499 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4500 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4501 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4502 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4503
4504 #undef PUT_TIDVAL_U64
4505 nla_nest_end(msg, tidattr);
4506 }
4507
4508 nla_nest_end(msg, tidsattr);
4509 }
4510
4511 nla_nest_end(msg, sinfoattr);
4512
4513 if (sinfo->assoc_req_ies_len &&
4514 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4515 sinfo->assoc_req_ies))
4516 goto nla_put_failure;
4517
4518 genlmsg_end(msg, hdr);
4519 return 0;
4520
4521 nla_put_failure:
4522 genlmsg_cancel(msg, hdr);
4523 return -EMSGSIZE;
4524 }
4525
4526 static int nl80211_dump_station(struct sk_buff *skb,
4527 struct netlink_callback *cb)
4528 {
4529 struct station_info sinfo;
4530 struct cfg80211_registered_device *rdev;
4531 struct wireless_dev *wdev;
4532 u8 mac_addr[ETH_ALEN];
4533 int sta_idx = cb->args[2];
4534 int err;
4535
4536 rtnl_lock();
4537 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4538 if (err)
4539 goto out_err;
4540
4541 if (!wdev->netdev) {
4542 err = -EINVAL;
4543 goto out_err;
4544 }
4545
4546 if (!rdev->ops->dump_station) {
4547 err = -EOPNOTSUPP;
4548 goto out_err;
4549 }
4550
4551 while (1) {
4552 memset(&sinfo, 0, sizeof(sinfo));
4553 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4554 mac_addr, &sinfo);
4555 if (err == -ENOENT)
4556 break;
4557 if (err)
4558 goto out_err;
4559
4560 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4561 NETLINK_CB(cb->skb).portid,
4562 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4563 rdev, wdev->netdev, mac_addr,
4564 &sinfo) < 0)
4565 goto out;
4566
4567 sta_idx++;
4568 }
4569
4570 out:
4571 cb->args[2] = sta_idx;
4572 err = skb->len;
4573 out_err:
4574 rtnl_unlock();
4575
4576 return err;
4577 }
4578
4579 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4580 {
4581 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4582 struct net_device *dev = info->user_ptr[1];
4583 struct station_info sinfo;
4584 struct sk_buff *msg;
4585 u8 *mac_addr = NULL;
4586 int err;
4587
4588 memset(&sinfo, 0, sizeof(sinfo));
4589
4590 if (!info->attrs[NL80211_ATTR_MAC])
4591 return -EINVAL;
4592
4593 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4594
4595 if (!rdev->ops->get_station)
4596 return -EOPNOTSUPP;
4597
4598 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4599 if (err)
4600 return err;
4601
4602 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4603 if (!msg)
4604 return -ENOMEM;
4605
4606 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4607 info->snd_portid, info->snd_seq, 0,
4608 rdev, dev, mac_addr, &sinfo) < 0) {
4609 nlmsg_free(msg);
4610 return -ENOBUFS;
4611 }
4612
4613 return genlmsg_reply(msg, info);
4614 }
4615
4616 int cfg80211_check_station_change(struct wiphy *wiphy,
4617 struct station_parameters *params,
4618 enum cfg80211_station_type statype)
4619 {
4620 if (params->listen_interval != -1 &&
4621 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4622 return -EINVAL;
4623
4624 if (params->support_p2p_ps != -1 &&
4625 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4626 return -EINVAL;
4627
4628 if (params->aid &&
4629 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4630 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4631 return -EINVAL;
4632
4633 /* When you run into this, adjust the code below for the new flag */
4634 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4635
4636 switch (statype) {
4637 case CFG80211_STA_MESH_PEER_KERNEL:
4638 case CFG80211_STA_MESH_PEER_USER:
4639 /*
4640 * No ignoring the TDLS flag here -- the userspace mesh
4641 * code doesn't have the bug of including TDLS in the
4642 * mask everywhere.
4643 */
4644 if (params->sta_flags_mask &
4645 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4646 BIT(NL80211_STA_FLAG_MFP) |
4647 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4648 return -EINVAL;
4649 break;
4650 case CFG80211_STA_TDLS_PEER_SETUP:
4651 case CFG80211_STA_TDLS_PEER_ACTIVE:
4652 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4653 return -EINVAL;
4654 /* ignore since it can't change */
4655 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4656 break;
4657 default:
4658 /* disallow mesh-specific things */
4659 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4660 return -EINVAL;
4661 if (params->local_pm)
4662 return -EINVAL;
4663 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4664 return -EINVAL;
4665 }
4666
4667 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4668 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4669 /* TDLS can't be set, ... */
4670 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4671 return -EINVAL;
4672 /*
4673 * ... but don't bother the driver with it. This works around
4674 * a hostapd/wpa_supplicant issue -- it always includes the
4675 * TLDS_PEER flag in the mask even for AP mode.
4676 */
4677 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4678 }
4679
4680 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4681 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4682 /* reject other things that can't change */
4683 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4684 return -EINVAL;
4685 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4686 return -EINVAL;
4687 if (params->supported_rates)
4688 return -EINVAL;
4689 if (params->ext_capab || params->ht_capa || params->vht_capa)
4690 return -EINVAL;
4691 }
4692
4693 if (statype != CFG80211_STA_AP_CLIENT &&
4694 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4695 if (params->vlan)
4696 return -EINVAL;
4697 }
4698
4699 switch (statype) {
4700 case CFG80211_STA_AP_MLME_CLIENT:
4701 /* Use this only for authorizing/unauthorizing a station */
4702 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4703 return -EOPNOTSUPP;
4704 break;
4705 case CFG80211_STA_AP_CLIENT:
4706 case CFG80211_STA_AP_CLIENT_UNASSOC:
4707 /* accept only the listed bits */
4708 if (params->sta_flags_mask &
4709 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4710 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4711 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4712 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4713 BIT(NL80211_STA_FLAG_WME) |
4714 BIT(NL80211_STA_FLAG_MFP)))
4715 return -EINVAL;
4716
4717 /* but authenticated/associated only if driver handles it */
4718 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4719 params->sta_flags_mask &
4720 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4721 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4722 return -EINVAL;
4723 break;
4724 case CFG80211_STA_IBSS:
4725 case CFG80211_STA_AP_STA:
4726 /* reject any changes other than AUTHORIZED */
4727 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4728 return -EINVAL;
4729 break;
4730 case CFG80211_STA_TDLS_PEER_SETUP:
4731 /* reject any changes other than AUTHORIZED or WME */
4732 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4733 BIT(NL80211_STA_FLAG_WME)))
4734 return -EINVAL;
4735 /* force (at least) rates when authorizing */
4736 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4737 !params->supported_rates)
4738 return -EINVAL;
4739 break;
4740 case CFG80211_STA_TDLS_PEER_ACTIVE:
4741 /* reject any changes */
4742 return -EINVAL;
4743 case CFG80211_STA_MESH_PEER_KERNEL:
4744 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4745 return -EINVAL;
4746 break;
4747 case CFG80211_STA_MESH_PEER_USER:
4748 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4749 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4750 return -EINVAL;
4751 break;
4752 }
4753
4754 /*
4755 * Older kernel versions ignored this attribute entirely, so don't
4756 * reject attempts to update it but mark it as unused instead so the
4757 * driver won't look at the data.
4758 */
4759 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4760 statype != CFG80211_STA_TDLS_PEER_SETUP)
4761 params->opmode_notif_used = false;
4762
4763 return 0;
4764 }
4765 EXPORT_SYMBOL(cfg80211_check_station_change);
4766
4767 /*
4768 * Get vlan interface making sure it is running and on the right wiphy.
4769 */
4770 static struct net_device *get_vlan(struct genl_info *info,
4771 struct cfg80211_registered_device *rdev)
4772 {
4773 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4774 struct net_device *v;
4775 int ret;
4776
4777 if (!vlanattr)
4778 return NULL;
4779
4780 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4781 if (!v)
4782 return ERR_PTR(-ENODEV);
4783
4784 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4785 ret = -EINVAL;
4786 goto error;
4787 }
4788
4789 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4790 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4791 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4792 ret = -EINVAL;
4793 goto error;
4794 }
4795
4796 if (!netif_running(v)) {
4797 ret = -ENETDOWN;
4798 goto error;
4799 }
4800
4801 return v;
4802 error:
4803 dev_put(v);
4804 return ERR_PTR(ret);
4805 }
4806
4807 static const struct nla_policy
4808 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4809 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4810 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4811 };
4812
4813 static int nl80211_parse_sta_wme(struct genl_info *info,
4814 struct station_parameters *params)
4815 {
4816 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4817 struct nlattr *nla;
4818 int err;
4819
4820 /* parse WME attributes if present */
4821 if (!info->attrs[NL80211_ATTR_STA_WME])
4822 return 0;
4823
4824 nla = info->attrs[NL80211_ATTR_STA_WME];
4825 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4826 nl80211_sta_wme_policy, info->extack);
4827 if (err)
4828 return err;
4829
4830 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4831 params->uapsd_queues = nla_get_u8(
4832 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4833 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4834 return -EINVAL;
4835
4836 if (tb[NL80211_STA_WME_MAX_SP])
4837 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4838
4839 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4840 return -EINVAL;
4841
4842 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4843
4844 return 0;
4845 }
4846
4847 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4848 struct station_parameters *params)
4849 {
4850 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4851 params->supported_channels =
4852 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4853 params->supported_channels_len =
4854 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4855 /*
4856 * Need to include at least one (first channel, number of
4857 * channels) tuple for each subband, and must have proper
4858 * tuples for the rest of the data as well.
4859 */
4860 if (params->supported_channels_len < 2)
4861 return -EINVAL;
4862 if (params->supported_channels_len % 2)
4863 return -EINVAL;
4864 }
4865
4866 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4867 params->supported_oper_classes =
4868 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4869 params->supported_oper_classes_len =
4870 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4871 /*
4872 * The value of the Length field of the Supported Operating
4873 * Classes element is between 2 and 253.
4874 */
4875 if (params->supported_oper_classes_len < 2 ||
4876 params->supported_oper_classes_len > 253)
4877 return -EINVAL;
4878 }
4879 return 0;
4880 }
4881
4882 static int nl80211_set_station_tdls(struct genl_info *info,
4883 struct station_parameters *params)
4884 {
4885 int err;
4886 /* Dummy STA entry gets updated once the peer capabilities are known */
4887 if (info->attrs[NL80211_ATTR_PEER_AID])
4888 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4889 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4890 params->ht_capa =
4891 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4892 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4893 params->vht_capa =
4894 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4895
4896 err = nl80211_parse_sta_channel_info(info, params);
4897 if (err)
4898 return err;
4899
4900 return nl80211_parse_sta_wme(info, params);
4901 }
4902
4903 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4904 {
4905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4906 struct net_device *dev = info->user_ptr[1];
4907 struct station_parameters params;
4908 u8 *mac_addr;
4909 int err;
4910
4911 memset(&params, 0, sizeof(params));
4912
4913 if (!rdev->ops->change_station)
4914 return -EOPNOTSUPP;
4915
4916 /*
4917 * AID and listen_interval properties can be set only for unassociated
4918 * station. Include these parameters here and will check them in
4919 * cfg80211_check_station_change().
4920 */
4921 if (info->attrs[NL80211_ATTR_STA_AID])
4922 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4923
4924 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4925 params.listen_interval =
4926 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4927 else
4928 params.listen_interval = -1;
4929
4930 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4931 u8 tmp;
4932
4933 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4934 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4935 return -EINVAL;
4936
4937 params.support_p2p_ps = tmp;
4938 } else {
4939 params.support_p2p_ps = -1;
4940 }
4941
4942 if (!info->attrs[NL80211_ATTR_MAC])
4943 return -EINVAL;
4944
4945 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4946
4947 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4948 params.supported_rates =
4949 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4950 params.supported_rates_len =
4951 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4952 }
4953
4954 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4955 params.capability =
4956 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4957 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4958 }
4959
4960 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4961 params.ext_capab =
4962 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4963 params.ext_capab_len =
4964 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4965 }
4966
4967 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4968 return -EINVAL;
4969
4970 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4971 params.plink_action =
4972 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4973 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4974 return -EINVAL;
4975 }
4976
4977 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4978 params.plink_state =
4979 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4980 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4981 return -EINVAL;
4982 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4983 params.peer_aid = nla_get_u16(
4984 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4985 if (params.peer_aid > IEEE80211_MAX_AID)
4986 return -EINVAL;
4987 }
4988 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4989 }
4990
4991 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4992 enum nl80211_mesh_power_mode pm = nla_get_u32(
4993 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4994
4995 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4996 pm > NL80211_MESH_POWER_MAX)
4997 return -EINVAL;
4998
4999 params.local_pm = pm;
5000 }
5001
5002 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5003 params.opmode_notif_used = true;
5004 params.opmode_notif =
5005 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5006 }
5007
5008 /* Include parameters for TDLS peer (will check later) */
5009 err = nl80211_set_station_tdls(info, &params);
5010 if (err)
5011 return err;
5012
5013 params.vlan = get_vlan(info, rdev);
5014 if (IS_ERR(params.vlan))
5015 return PTR_ERR(params.vlan);
5016
5017 switch (dev->ieee80211_ptr->iftype) {
5018 case NL80211_IFTYPE_AP:
5019 case NL80211_IFTYPE_AP_VLAN:
5020 case NL80211_IFTYPE_P2P_GO:
5021 case NL80211_IFTYPE_P2P_CLIENT:
5022 case NL80211_IFTYPE_STATION:
5023 case NL80211_IFTYPE_ADHOC:
5024 case NL80211_IFTYPE_MESH_POINT:
5025 break;
5026 default:
5027 err = -EOPNOTSUPP;
5028 goto out_put_vlan;
5029 }
5030
5031 /* driver will call cfg80211_check_station_change() */
5032 err = rdev_change_station(rdev, dev, mac_addr, &params);
5033
5034 out_put_vlan:
5035 if (params.vlan)
5036 dev_put(params.vlan);
5037
5038 return err;
5039 }
5040
5041 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5042 {
5043 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5044 int err;
5045 struct net_device *dev = info->user_ptr[1];
5046 struct station_parameters params;
5047 u8 *mac_addr = NULL;
5048 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5049 BIT(NL80211_STA_FLAG_ASSOCIATED);
5050
5051 memset(&params, 0, sizeof(params));
5052
5053 if (!rdev->ops->add_station)
5054 return -EOPNOTSUPP;
5055
5056 if (!info->attrs[NL80211_ATTR_MAC])
5057 return -EINVAL;
5058
5059 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5060 return -EINVAL;
5061
5062 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5063 return -EINVAL;
5064
5065 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5066 !info->attrs[NL80211_ATTR_PEER_AID])
5067 return -EINVAL;
5068
5069 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5070 params.supported_rates =
5071 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5072 params.supported_rates_len =
5073 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5074 params.listen_interval =
5075 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5076
5077 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5078 u8 tmp;
5079
5080 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5081 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5082 return -EINVAL;
5083
5084 params.support_p2p_ps = tmp;
5085 } else {
5086 /*
5087 * if not specified, assume it's supported for P2P GO interface,
5088 * and is NOT supported for AP interface
5089 */
5090 params.support_p2p_ps =
5091 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5092 }
5093
5094 if (info->attrs[NL80211_ATTR_PEER_AID])
5095 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5096 else
5097 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5098 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5099 return -EINVAL;
5100
5101 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5102 params.capability =
5103 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5104 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5105 }
5106
5107 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5108 params.ext_capab =
5109 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5110 params.ext_capab_len =
5111 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5112 }
5113
5114 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5115 params.ht_capa =
5116 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5117
5118 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5119 params.vht_capa =
5120 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5121
5122 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5123 params.opmode_notif_used = true;
5124 params.opmode_notif =
5125 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5126 }
5127
5128 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5129 params.plink_action =
5130 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5131 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5132 return -EINVAL;
5133 }
5134
5135 err = nl80211_parse_sta_channel_info(info, &params);
5136 if (err)
5137 return err;
5138
5139 err = nl80211_parse_sta_wme(info, &params);
5140 if (err)
5141 return err;
5142
5143 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5144 return -EINVAL;
5145
5146 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5147 * as userspace might just pass through the capabilities from the IEs
5148 * directly, rather than enforcing this restriction and returning an
5149 * error in this case.
5150 */
5151 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5152 params.ht_capa = NULL;
5153 params.vht_capa = NULL;
5154 }
5155
5156 /* When you run into this, adjust the code below for the new flag */
5157 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5158
5159 switch (dev->ieee80211_ptr->iftype) {
5160 case NL80211_IFTYPE_AP:
5161 case NL80211_IFTYPE_AP_VLAN:
5162 case NL80211_IFTYPE_P2P_GO:
5163 /* ignore WME attributes if iface/sta is not capable */
5164 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5165 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5166 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5167
5168 /* TDLS peers cannot be added */
5169 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5170 info->attrs[NL80211_ATTR_PEER_AID])
5171 return -EINVAL;
5172 /* but don't bother the driver with it */
5173 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5174
5175 /* allow authenticated/associated only if driver handles it */
5176 if (!(rdev->wiphy.features &
5177 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5178 params.sta_flags_mask & auth_assoc)
5179 return -EINVAL;
5180
5181 /* Older userspace, or userspace wanting to be compatible with
5182 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5183 * and assoc flags in the mask, but assumes the station will be
5184 * added as associated anyway since this was the required driver
5185 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5186 * introduced.
5187 * In order to not bother drivers with this quirk in the API
5188 * set the flags in both the mask and set for new stations in
5189 * this case.
5190 */
5191 if (!(params.sta_flags_mask & auth_assoc)) {
5192 params.sta_flags_mask |= auth_assoc;
5193 params.sta_flags_set |= auth_assoc;
5194 }
5195
5196 /* must be last in here for error handling */
5197 params.vlan = get_vlan(info, rdev);
5198 if (IS_ERR(params.vlan))
5199 return PTR_ERR(params.vlan);
5200 break;
5201 case NL80211_IFTYPE_MESH_POINT:
5202 /* ignore uAPSD data */
5203 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5204
5205 /* associated is disallowed */
5206 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5207 return -EINVAL;
5208 /* TDLS peers cannot be added */
5209 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5210 info->attrs[NL80211_ATTR_PEER_AID])
5211 return -EINVAL;
5212 break;
5213 case NL80211_IFTYPE_STATION:
5214 case NL80211_IFTYPE_P2P_CLIENT:
5215 /* ignore uAPSD data */
5216 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5217
5218 /* these are disallowed */
5219 if (params.sta_flags_mask &
5220 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5221 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5222 return -EINVAL;
5223 /* Only TDLS peers can be added */
5224 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5225 return -EINVAL;
5226 /* Can only add if TDLS ... */
5227 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5228 return -EOPNOTSUPP;
5229 /* ... with external setup is supported */
5230 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5231 return -EOPNOTSUPP;
5232 /*
5233 * Older wpa_supplicant versions always mark the TDLS peer
5234 * as authorized, but it shouldn't yet be.
5235 */
5236 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5237 break;
5238 default:
5239 return -EOPNOTSUPP;
5240 }
5241
5242 /* be aware of params.vlan when changing code here */
5243
5244 err = rdev_add_station(rdev, dev, mac_addr, &params);
5245
5246 if (params.vlan)
5247 dev_put(params.vlan);
5248 return err;
5249 }
5250
5251 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5252 {
5253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5254 struct net_device *dev = info->user_ptr[1];
5255 struct station_del_parameters params;
5256
5257 memset(&params, 0, sizeof(params));
5258
5259 if (info->attrs[NL80211_ATTR_MAC])
5260 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5261
5262 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5265 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5266 return -EINVAL;
5267
5268 if (!rdev->ops->del_station)
5269 return -EOPNOTSUPP;
5270
5271 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5272 params.subtype =
5273 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5274 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5275 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5276 return -EINVAL;
5277 } else {
5278 /* Default to Deauthentication frame */
5279 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5280 }
5281
5282 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5283 params.reason_code =
5284 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5285 if (params.reason_code == 0)
5286 return -EINVAL; /* 0 is reserved */
5287 } else {
5288 /* Default to reason code 2 */
5289 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5290 }
5291
5292 return rdev_del_station(rdev, dev, &params);
5293 }
5294
5295 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5296 int flags, struct net_device *dev,
5297 u8 *dst, u8 *next_hop,
5298 struct mpath_info *pinfo)
5299 {
5300 void *hdr;
5301 struct nlattr *pinfoattr;
5302
5303 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5304 if (!hdr)
5305 return -1;
5306
5307 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5308 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5309 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5310 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5311 goto nla_put_failure;
5312
5313 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5314 if (!pinfoattr)
5315 goto nla_put_failure;
5316 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5317 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5318 pinfo->frame_qlen))
5319 goto nla_put_failure;
5320 if (((pinfo->filled & MPATH_INFO_SN) &&
5321 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5322 ((pinfo->filled & MPATH_INFO_METRIC) &&
5323 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5324 pinfo->metric)) ||
5325 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5326 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5327 pinfo->exptime)) ||
5328 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5329 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5330 pinfo->flags)) ||
5331 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5332 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5333 pinfo->discovery_timeout)) ||
5334 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5335 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5336 pinfo->discovery_retries)))
5337 goto nla_put_failure;
5338
5339 nla_nest_end(msg, pinfoattr);
5340
5341 genlmsg_end(msg, hdr);
5342 return 0;
5343
5344 nla_put_failure:
5345 genlmsg_cancel(msg, hdr);
5346 return -EMSGSIZE;
5347 }
5348
5349 static int nl80211_dump_mpath(struct sk_buff *skb,
5350 struct netlink_callback *cb)
5351 {
5352 struct mpath_info pinfo;
5353 struct cfg80211_registered_device *rdev;
5354 struct wireless_dev *wdev;
5355 u8 dst[ETH_ALEN];
5356 u8 next_hop[ETH_ALEN];
5357 int path_idx = cb->args[2];
5358 int err;
5359
5360 rtnl_lock();
5361 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5362 if (err)
5363 goto out_err;
5364
5365 if (!rdev->ops->dump_mpath) {
5366 err = -EOPNOTSUPP;
5367 goto out_err;
5368 }
5369
5370 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5371 err = -EOPNOTSUPP;
5372 goto out_err;
5373 }
5374
5375 while (1) {
5376 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5377 next_hop, &pinfo);
5378 if (err == -ENOENT)
5379 break;
5380 if (err)
5381 goto out_err;
5382
5383 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5384 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5385 wdev->netdev, dst, next_hop,
5386 &pinfo) < 0)
5387 goto out;
5388
5389 path_idx++;
5390 }
5391
5392 out:
5393 cb->args[2] = path_idx;
5394 err = skb->len;
5395 out_err:
5396 rtnl_unlock();
5397 return err;
5398 }
5399
5400 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5401 {
5402 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5403 int err;
5404 struct net_device *dev = info->user_ptr[1];
5405 struct mpath_info pinfo;
5406 struct sk_buff *msg;
5407 u8 *dst = NULL;
5408 u8 next_hop[ETH_ALEN];
5409
5410 memset(&pinfo, 0, sizeof(pinfo));
5411
5412 if (!info->attrs[NL80211_ATTR_MAC])
5413 return -EINVAL;
5414
5415 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5416
5417 if (!rdev->ops->get_mpath)
5418 return -EOPNOTSUPP;
5419
5420 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5421 return -EOPNOTSUPP;
5422
5423 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5424 if (err)
5425 return err;
5426
5427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5428 if (!msg)
5429 return -ENOMEM;
5430
5431 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5432 dev, dst, next_hop, &pinfo) < 0) {
5433 nlmsg_free(msg);
5434 return -ENOBUFS;
5435 }
5436
5437 return genlmsg_reply(msg, info);
5438 }
5439
5440 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5441 {
5442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5443 struct net_device *dev = info->user_ptr[1];
5444 u8 *dst = NULL;
5445 u8 *next_hop = NULL;
5446
5447 if (!info->attrs[NL80211_ATTR_MAC])
5448 return -EINVAL;
5449
5450 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5451 return -EINVAL;
5452
5453 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5454 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5455
5456 if (!rdev->ops->change_mpath)
5457 return -EOPNOTSUPP;
5458
5459 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5460 return -EOPNOTSUPP;
5461
5462 return rdev_change_mpath(rdev, dev, dst, next_hop);
5463 }
5464
5465 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5466 {
5467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5468 struct net_device *dev = info->user_ptr[1];
5469 u8 *dst = NULL;
5470 u8 *next_hop = NULL;
5471
5472 if (!info->attrs[NL80211_ATTR_MAC])
5473 return -EINVAL;
5474
5475 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5476 return -EINVAL;
5477
5478 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5479 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5480
5481 if (!rdev->ops->add_mpath)
5482 return -EOPNOTSUPP;
5483
5484 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5485 return -EOPNOTSUPP;
5486
5487 return rdev_add_mpath(rdev, dev, dst, next_hop);
5488 }
5489
5490 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5491 {
5492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5493 struct net_device *dev = info->user_ptr[1];
5494 u8 *dst = NULL;
5495
5496 if (info->attrs[NL80211_ATTR_MAC])
5497 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5498
5499 if (!rdev->ops->del_mpath)
5500 return -EOPNOTSUPP;
5501
5502 return rdev_del_mpath(rdev, dev, dst);
5503 }
5504
5505 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5506 {
5507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5508 int err;
5509 struct net_device *dev = info->user_ptr[1];
5510 struct mpath_info pinfo;
5511 struct sk_buff *msg;
5512 u8 *dst = NULL;
5513 u8 mpp[ETH_ALEN];
5514
5515 memset(&pinfo, 0, sizeof(pinfo));
5516
5517 if (!info->attrs[NL80211_ATTR_MAC])
5518 return -EINVAL;
5519
5520 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5521
5522 if (!rdev->ops->get_mpp)
5523 return -EOPNOTSUPP;
5524
5525 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5526 return -EOPNOTSUPP;
5527
5528 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5529 if (err)
5530 return err;
5531
5532 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5533 if (!msg)
5534 return -ENOMEM;
5535
5536 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5537 dev, dst, mpp, &pinfo) < 0) {
5538 nlmsg_free(msg);
5539 return -ENOBUFS;
5540 }
5541
5542 return genlmsg_reply(msg, info);
5543 }
5544
5545 static int nl80211_dump_mpp(struct sk_buff *skb,
5546 struct netlink_callback *cb)
5547 {
5548 struct mpath_info pinfo;
5549 struct cfg80211_registered_device *rdev;
5550 struct wireless_dev *wdev;
5551 u8 dst[ETH_ALEN];
5552 u8 mpp[ETH_ALEN];
5553 int path_idx = cb->args[2];
5554 int err;
5555
5556 rtnl_lock();
5557 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5558 if (err)
5559 goto out_err;
5560
5561 if (!rdev->ops->dump_mpp) {
5562 err = -EOPNOTSUPP;
5563 goto out_err;
5564 }
5565
5566 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5567 err = -EOPNOTSUPP;
5568 goto out_err;
5569 }
5570
5571 while (1) {
5572 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5573 mpp, &pinfo);
5574 if (err == -ENOENT)
5575 break;
5576 if (err)
5577 goto out_err;
5578
5579 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5580 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5581 wdev->netdev, dst, mpp,
5582 &pinfo) < 0)
5583 goto out;
5584
5585 path_idx++;
5586 }
5587
5588 out:
5589 cb->args[2] = path_idx;
5590 err = skb->len;
5591 out_err:
5592 rtnl_unlock();
5593 return err;
5594 }
5595
5596 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5597 {
5598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5599 struct net_device *dev = info->user_ptr[1];
5600 struct wireless_dev *wdev = dev->ieee80211_ptr;
5601 struct bss_parameters params;
5602 int err;
5603
5604 memset(&params, 0, sizeof(params));
5605 /* default to not changing parameters */
5606 params.use_cts_prot = -1;
5607 params.use_short_preamble = -1;
5608 params.use_short_slot_time = -1;
5609 params.ap_isolate = -1;
5610 params.ht_opmode = -1;
5611 params.p2p_ctwindow = -1;
5612 params.p2p_opp_ps = -1;
5613
5614 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5615 params.use_cts_prot =
5616 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5617 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5618 params.use_short_preamble =
5619 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5620 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5621 params.use_short_slot_time =
5622 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5623 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5624 params.basic_rates =
5625 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5626 params.basic_rates_len =
5627 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5628 }
5629 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5630 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5631 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5632 params.ht_opmode =
5633 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5634
5635 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5637 return -EINVAL;
5638 params.p2p_ctwindow =
5639 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5640 if (params.p2p_ctwindow < 0)
5641 return -EINVAL;
5642 if (params.p2p_ctwindow != 0 &&
5643 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5644 return -EINVAL;
5645 }
5646
5647 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5648 u8 tmp;
5649
5650 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5651 return -EINVAL;
5652 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5653 if (tmp > 1)
5654 return -EINVAL;
5655 params.p2p_opp_ps = tmp;
5656 if (params.p2p_opp_ps &&
5657 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5658 return -EINVAL;
5659 }
5660
5661 if (!rdev->ops->change_bss)
5662 return -EOPNOTSUPP;
5663
5664 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5665 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5666 return -EOPNOTSUPP;
5667
5668 wdev_lock(wdev);
5669 err = rdev_change_bss(rdev, dev, &params);
5670 wdev_unlock(wdev);
5671
5672 return err;
5673 }
5674
5675 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5676 {
5677 char *data = NULL;
5678 bool is_indoor;
5679 enum nl80211_user_reg_hint_type user_reg_hint_type;
5680 u32 owner_nlportid;
5681
5682 /*
5683 * You should only get this when cfg80211 hasn't yet initialized
5684 * completely when built-in to the kernel right between the time
5685 * window between nl80211_init() and regulatory_init(), if that is
5686 * even possible.
5687 */
5688 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5689 return -EINPROGRESS;
5690
5691 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5692 user_reg_hint_type =
5693 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5694 else
5695 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5696
5697 switch (user_reg_hint_type) {
5698 case NL80211_USER_REG_HINT_USER:
5699 case NL80211_USER_REG_HINT_CELL_BASE:
5700 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5701 return -EINVAL;
5702
5703 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5704 return regulatory_hint_user(data, user_reg_hint_type);
5705 case NL80211_USER_REG_HINT_INDOOR:
5706 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5707 owner_nlportid = info->snd_portid;
5708 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5709 } else {
5710 owner_nlportid = 0;
5711 is_indoor = true;
5712 }
5713
5714 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5715 default:
5716 return -EINVAL;
5717 }
5718 }
5719
5720 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5721 {
5722 return reg_reload_regdb();
5723 }
5724
5725 static int nl80211_get_mesh_config(struct sk_buff *skb,
5726 struct genl_info *info)
5727 {
5728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5729 struct net_device *dev = info->user_ptr[1];
5730 struct wireless_dev *wdev = dev->ieee80211_ptr;
5731 struct mesh_config cur_params;
5732 int err = 0;
5733 void *hdr;
5734 struct nlattr *pinfoattr;
5735 struct sk_buff *msg;
5736
5737 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5738 return -EOPNOTSUPP;
5739
5740 if (!rdev->ops->get_mesh_config)
5741 return -EOPNOTSUPP;
5742
5743 wdev_lock(wdev);
5744 /* If not connected, get default parameters */
5745 if (!wdev->mesh_id_len)
5746 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5747 else
5748 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5749 wdev_unlock(wdev);
5750
5751 if (err)
5752 return err;
5753
5754 /* Draw up a netlink message to send back */
5755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5756 if (!msg)
5757 return -ENOMEM;
5758 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5759 NL80211_CMD_GET_MESH_CONFIG);
5760 if (!hdr)
5761 goto out;
5762 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5763 if (!pinfoattr)
5764 goto nla_put_failure;
5765 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5766 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5767 cur_params.dot11MeshRetryTimeout) ||
5768 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5769 cur_params.dot11MeshConfirmTimeout) ||
5770 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5771 cur_params.dot11MeshHoldingTimeout) ||
5772 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5773 cur_params.dot11MeshMaxPeerLinks) ||
5774 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5775 cur_params.dot11MeshMaxRetries) ||
5776 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5777 cur_params.dot11MeshTTL) ||
5778 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5779 cur_params.element_ttl) ||
5780 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5781 cur_params.auto_open_plinks) ||
5782 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5783 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5784 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5785 cur_params.dot11MeshHWMPmaxPREQretries) ||
5786 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5787 cur_params.path_refresh_time) ||
5788 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5789 cur_params.min_discovery_timeout) ||
5790 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5791 cur_params.dot11MeshHWMPactivePathTimeout) ||
5792 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5793 cur_params.dot11MeshHWMPpreqMinInterval) ||
5794 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5795 cur_params.dot11MeshHWMPperrMinInterval) ||
5796 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5797 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5798 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5799 cur_params.dot11MeshHWMPRootMode) ||
5800 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5801 cur_params.dot11MeshHWMPRannInterval) ||
5802 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5803 cur_params.dot11MeshGateAnnouncementProtocol) ||
5804 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5805 cur_params.dot11MeshForwarding) ||
5806 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5807 cur_params.rssi_threshold) ||
5808 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5809 cur_params.ht_opmode) ||
5810 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5811 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5812 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5813 cur_params.dot11MeshHWMProotInterval) ||
5814 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5815 cur_params.dot11MeshHWMPconfirmationInterval) ||
5816 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5817 cur_params.power_mode) ||
5818 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5819 cur_params.dot11MeshAwakeWindowDuration) ||
5820 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5821 cur_params.plink_timeout))
5822 goto nla_put_failure;
5823 nla_nest_end(msg, pinfoattr);
5824 genlmsg_end(msg, hdr);
5825 return genlmsg_reply(msg, info);
5826
5827 nla_put_failure:
5828 genlmsg_cancel(msg, hdr);
5829 out:
5830 nlmsg_free(msg);
5831 return -ENOBUFS;
5832 }
5833
5834 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5835 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5836 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5837 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5838 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5839 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5840 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5841 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5842 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5843 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5844 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5845 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5846 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5847 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5848 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5849 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5850 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5851 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5852 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5853 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5854 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5855 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5856 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5857 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5858 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5859 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5860 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5861 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5862 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5863 };
5864
5865 static const struct nla_policy
5866 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5867 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5868 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5869 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5870 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5871 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5872 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5873 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5874 .len = IEEE80211_MAX_DATA_LEN },
5875 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5876 };
5877
5878 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5879 {
5880 u8 val = nla_get_u8(nla);
5881 if (val < min || val > max)
5882 return -EINVAL;
5883 *out = val;
5884 return 0;
5885 }
5886
5887 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5888 {
5889 u8 val = nla_get_u8(nla);
5890 if (val < min || val > max)
5891 return -EINVAL;
5892 *out = val;
5893 return 0;
5894 }
5895
5896 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5897 {
5898 u16 val = nla_get_u16(nla);
5899 if (val < min || val > max)
5900 return -EINVAL;
5901 *out = val;
5902 return 0;
5903 }
5904
5905 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5906 {
5907 u32 val = nla_get_u32(nla);
5908 if (val < min || val > max)
5909 return -EINVAL;
5910 *out = val;
5911 return 0;
5912 }
5913
5914 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5915 {
5916 s32 val = nla_get_s32(nla);
5917 if (val < min || val > max)
5918 return -EINVAL;
5919 *out = val;
5920 return 0;
5921 }
5922
5923 static int nl80211_check_power_mode(const struct nlattr *nla,
5924 enum nl80211_mesh_power_mode min,
5925 enum nl80211_mesh_power_mode max,
5926 enum nl80211_mesh_power_mode *out)
5927 {
5928 u32 val = nla_get_u32(nla);
5929 if (val < min || val > max)
5930 return -EINVAL;
5931 *out = val;
5932 return 0;
5933 }
5934
5935 static int nl80211_parse_mesh_config(struct genl_info *info,
5936 struct mesh_config *cfg,
5937 u32 *mask_out)
5938 {
5939 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5940 u32 mask = 0;
5941 u16 ht_opmode;
5942
5943 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5944 do { \
5945 if (tb[attr]) { \
5946 if (fn(tb[attr], min, max, &cfg->param)) \
5947 return -EINVAL; \
5948 mask |= (1 << (attr - 1)); \
5949 } \
5950 } while (0)
5951
5952 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5953 return -EINVAL;
5954 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5955 info->attrs[NL80211_ATTR_MESH_CONFIG],
5956 nl80211_meshconf_params_policy, info->extack))
5957 return -EINVAL;
5958
5959 /* This makes sure that there aren't more than 32 mesh config
5960 * parameters (otherwise our bitfield scheme would not work.) */
5961 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5962
5963 /* Fill in the params struct */
5964 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5965 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5966 nl80211_check_u16);
5967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5968 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5969 nl80211_check_u16);
5970 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5971 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5972 nl80211_check_u16);
5973 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5974 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5975 nl80211_check_u16);
5976 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5977 mask, NL80211_MESHCONF_MAX_RETRIES,
5978 nl80211_check_u8);
5979 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5980 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5981 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5982 mask, NL80211_MESHCONF_ELEMENT_TTL,
5983 nl80211_check_u8);
5984 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5985 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5986 nl80211_check_bool);
5987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5988 1, 255, mask,
5989 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5990 nl80211_check_u32);
5991 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5992 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5993 nl80211_check_u8);
5994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5995 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5996 nl80211_check_u32);
5997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5998 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5999 nl80211_check_u16);
6000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6001 1, 65535, mask,
6002 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6003 nl80211_check_u32);
6004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6005 1, 65535, mask,
6006 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6007 nl80211_check_u16);
6008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6009 1, 65535, mask,
6010 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6011 nl80211_check_u16);
6012 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6013 dot11MeshHWMPnetDiameterTraversalTime,
6014 1, 65535, mask,
6015 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6016 nl80211_check_u16);
6017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6018 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6019 nl80211_check_u8);
6020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6021 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6022 nl80211_check_u16);
6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6024 dot11MeshGateAnnouncementProtocol, 0, 1,
6025 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6026 nl80211_check_bool);
6027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6028 mask, NL80211_MESHCONF_FORWARDING,
6029 nl80211_check_bool);
6030 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6031 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6032 nl80211_check_s32);
6033 /*
6034 * Check HT operation mode based on
6035 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6036 */
6037 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6038 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6039
6040 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6041 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6042 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6043 return -EINVAL;
6044
6045 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6046 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6047 return -EINVAL;
6048
6049 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6050 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6051 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6052 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6053 return -EINVAL;
6054 break;
6055 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6056 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6057 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6058 return -EINVAL;
6059 break;
6060 }
6061 cfg->ht_opmode = ht_opmode;
6062 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6063 }
6064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6065 1, 65535, mask,
6066 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6067 nl80211_check_u32);
6068 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6069 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6070 nl80211_check_u16);
6071 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6072 dot11MeshHWMPconfirmationInterval,
6073 1, 65535, mask,
6074 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6075 nl80211_check_u16);
6076 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6077 NL80211_MESH_POWER_ACTIVE,
6078 NL80211_MESH_POWER_MAX,
6079 mask, NL80211_MESHCONF_POWER_MODE,
6080 nl80211_check_power_mode);
6081 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6082 0, 65535, mask,
6083 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6084 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6085 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6086 nl80211_check_u32);
6087 if (mask_out)
6088 *mask_out = mask;
6089
6090 return 0;
6091
6092 #undef FILL_IN_MESH_PARAM_IF_SET
6093 }
6094
6095 static int nl80211_parse_mesh_setup(struct genl_info *info,
6096 struct mesh_setup *setup)
6097 {
6098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6099 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6100
6101 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6102 return -EINVAL;
6103 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6104 info->attrs[NL80211_ATTR_MESH_SETUP],
6105 nl80211_mesh_setup_params_policy, info->extack))
6106 return -EINVAL;
6107
6108 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6109 setup->sync_method =
6110 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6111 IEEE80211_SYNC_METHOD_VENDOR :
6112 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6113
6114 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6115 setup->path_sel_proto =
6116 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6117 IEEE80211_PATH_PROTOCOL_VENDOR :
6118 IEEE80211_PATH_PROTOCOL_HWMP;
6119
6120 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6121 setup->path_metric =
6122 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6123 IEEE80211_PATH_METRIC_VENDOR :
6124 IEEE80211_PATH_METRIC_AIRTIME;
6125
6126 if (tb[NL80211_MESH_SETUP_IE]) {
6127 struct nlattr *ieattr =
6128 tb[NL80211_MESH_SETUP_IE];
6129 if (!is_valid_ie_attr(ieattr))
6130 return -EINVAL;
6131 setup->ie = nla_data(ieattr);
6132 setup->ie_len = nla_len(ieattr);
6133 }
6134 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6135 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6136 return -EINVAL;
6137 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6138 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6139 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6140 if (setup->is_secure)
6141 setup->user_mpm = true;
6142
6143 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6144 if (!setup->user_mpm)
6145 return -EINVAL;
6146 setup->auth_id =
6147 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6148 }
6149
6150 return 0;
6151 }
6152
6153 static int nl80211_update_mesh_config(struct sk_buff *skb,
6154 struct genl_info *info)
6155 {
6156 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6157 struct net_device *dev = info->user_ptr[1];
6158 struct wireless_dev *wdev = dev->ieee80211_ptr;
6159 struct mesh_config cfg;
6160 u32 mask;
6161 int err;
6162
6163 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6164 return -EOPNOTSUPP;
6165
6166 if (!rdev->ops->update_mesh_config)
6167 return -EOPNOTSUPP;
6168
6169 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6170 if (err)
6171 return err;
6172
6173 wdev_lock(wdev);
6174 if (!wdev->mesh_id_len)
6175 err = -ENOLINK;
6176
6177 if (!err)
6178 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6179
6180 wdev_unlock(wdev);
6181
6182 return err;
6183 }
6184
6185 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6186 struct sk_buff *msg)
6187 {
6188 struct nlattr *nl_reg_rules;
6189 unsigned int i;
6190
6191 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6192 (regdom->dfs_region &&
6193 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6194 goto nla_put_failure;
6195
6196 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6197 if (!nl_reg_rules)
6198 goto nla_put_failure;
6199
6200 for (i = 0; i < regdom->n_reg_rules; i++) {
6201 struct nlattr *nl_reg_rule;
6202 const struct ieee80211_reg_rule *reg_rule;
6203 const struct ieee80211_freq_range *freq_range;
6204 const struct ieee80211_power_rule *power_rule;
6205 unsigned int max_bandwidth_khz;
6206
6207 reg_rule = &regdom->reg_rules[i];
6208 freq_range = &reg_rule->freq_range;
6209 power_rule = &reg_rule->power_rule;
6210
6211 nl_reg_rule = nla_nest_start(msg, i);
6212 if (!nl_reg_rule)
6213 goto nla_put_failure;
6214
6215 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6216 if (!max_bandwidth_khz)
6217 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6218 reg_rule);
6219
6220 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6221 reg_rule->flags) ||
6222 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6223 freq_range->start_freq_khz) ||
6224 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6225 freq_range->end_freq_khz) ||
6226 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6227 max_bandwidth_khz) ||
6228 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6229 power_rule->max_antenna_gain) ||
6230 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6231 power_rule->max_eirp) ||
6232 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6233 reg_rule->dfs_cac_ms))
6234 goto nla_put_failure;
6235
6236 nla_nest_end(msg, nl_reg_rule);
6237 }
6238
6239 nla_nest_end(msg, nl_reg_rules);
6240 return 0;
6241
6242 nla_put_failure:
6243 return -EMSGSIZE;
6244 }
6245
6246 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6247 {
6248 const struct ieee80211_regdomain *regdom = NULL;
6249 struct cfg80211_registered_device *rdev;
6250 struct wiphy *wiphy = NULL;
6251 struct sk_buff *msg;
6252 void *hdr;
6253
6254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6255 if (!msg)
6256 return -ENOBUFS;
6257
6258 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6259 NL80211_CMD_GET_REG);
6260 if (!hdr)
6261 goto put_failure;
6262
6263 if (info->attrs[NL80211_ATTR_WIPHY]) {
6264 bool self_managed;
6265
6266 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6267 if (IS_ERR(rdev)) {
6268 nlmsg_free(msg);
6269 return PTR_ERR(rdev);
6270 }
6271
6272 wiphy = &rdev->wiphy;
6273 self_managed = wiphy->regulatory_flags &
6274 REGULATORY_WIPHY_SELF_MANAGED;
6275 regdom = get_wiphy_regdom(wiphy);
6276
6277 /* a self-managed-reg device must have a private regdom */
6278 if (WARN_ON(!regdom && self_managed)) {
6279 nlmsg_free(msg);
6280 return -EINVAL;
6281 }
6282
6283 if (regdom &&
6284 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6285 goto nla_put_failure;
6286 }
6287
6288 if (!wiphy && reg_last_request_cell_base() &&
6289 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6290 NL80211_USER_REG_HINT_CELL_BASE))
6291 goto nla_put_failure;
6292
6293 rcu_read_lock();
6294
6295 if (!regdom)
6296 regdom = rcu_dereference(cfg80211_regdomain);
6297
6298 if (nl80211_put_regdom(regdom, msg))
6299 goto nla_put_failure_rcu;
6300
6301 rcu_read_unlock();
6302
6303 genlmsg_end(msg, hdr);
6304 return genlmsg_reply(msg, info);
6305
6306 nla_put_failure_rcu:
6307 rcu_read_unlock();
6308 nla_put_failure:
6309 genlmsg_cancel(msg, hdr);
6310 put_failure:
6311 nlmsg_free(msg);
6312 return -EMSGSIZE;
6313 }
6314
6315 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6316 u32 seq, int flags, struct wiphy *wiphy,
6317 const struct ieee80211_regdomain *regdom)
6318 {
6319 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6320 NL80211_CMD_GET_REG);
6321
6322 if (!hdr)
6323 return -1;
6324
6325 genl_dump_check_consistent(cb, hdr);
6326
6327 if (nl80211_put_regdom(regdom, msg))
6328 goto nla_put_failure;
6329
6330 if (!wiphy && reg_last_request_cell_base() &&
6331 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6332 NL80211_USER_REG_HINT_CELL_BASE))
6333 goto nla_put_failure;
6334
6335 if (wiphy &&
6336 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6337 goto nla_put_failure;
6338
6339 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6340 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6341 goto nla_put_failure;
6342
6343 genlmsg_end(msg, hdr);
6344 return 0;
6345
6346 nla_put_failure:
6347 genlmsg_cancel(msg, hdr);
6348 return -EMSGSIZE;
6349 }
6350
6351 static int nl80211_get_reg_dump(struct sk_buff *skb,
6352 struct netlink_callback *cb)
6353 {
6354 const struct ieee80211_regdomain *regdom = NULL;
6355 struct cfg80211_registered_device *rdev;
6356 int err, reg_idx, start = cb->args[2];
6357
6358 rtnl_lock();
6359
6360 if (cfg80211_regdomain && start == 0) {
6361 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6362 NLM_F_MULTI, NULL,
6363 rtnl_dereference(cfg80211_regdomain));
6364 if (err < 0)
6365 goto out_err;
6366 }
6367
6368 /* the global regdom is idx 0 */
6369 reg_idx = 1;
6370 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6371 regdom = get_wiphy_regdom(&rdev->wiphy);
6372 if (!regdom)
6373 continue;
6374
6375 if (++reg_idx <= start)
6376 continue;
6377
6378 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6379 NLM_F_MULTI, &rdev->wiphy, regdom);
6380 if (err < 0) {
6381 reg_idx--;
6382 break;
6383 }
6384 }
6385
6386 cb->args[2] = reg_idx;
6387 err = skb->len;
6388 out_err:
6389 rtnl_unlock();
6390 return err;
6391 }
6392
6393 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6394 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6395 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6396 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6397 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6398 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6399 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6400 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6401 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6402 };
6403
6404 static int parse_reg_rule(struct nlattr *tb[],
6405 struct ieee80211_reg_rule *reg_rule)
6406 {
6407 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6408 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6409
6410 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6411 return -EINVAL;
6412 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6413 return -EINVAL;
6414 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6415 return -EINVAL;
6416 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6417 return -EINVAL;
6418 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6419 return -EINVAL;
6420
6421 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6422
6423 freq_range->start_freq_khz =
6424 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6425 freq_range->end_freq_khz =
6426 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6427 freq_range->max_bandwidth_khz =
6428 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6429
6430 power_rule->max_eirp =
6431 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6432
6433 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6434 power_rule->max_antenna_gain =
6435 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6436
6437 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6438 reg_rule->dfs_cac_ms =
6439 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6440
6441 return 0;
6442 }
6443
6444 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6445 {
6446 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6447 struct nlattr *nl_reg_rule;
6448 char *alpha2;
6449 int rem_reg_rules, r;
6450 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6451 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6452 struct ieee80211_regdomain *rd;
6453
6454 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6455 return -EINVAL;
6456
6457 if (!info->attrs[NL80211_ATTR_REG_RULES])
6458 return -EINVAL;
6459
6460 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6461
6462 if (info->attrs[NL80211_ATTR_DFS_REGION])
6463 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6464
6465 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6466 rem_reg_rules) {
6467 num_rules++;
6468 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6469 return -EINVAL;
6470 }
6471
6472 if (!reg_is_valid_request(alpha2))
6473 return -EINVAL;
6474
6475 size_of_regd = sizeof(struct ieee80211_regdomain) +
6476 num_rules * sizeof(struct ieee80211_reg_rule);
6477
6478 rd = kzalloc(size_of_regd, GFP_KERNEL);
6479 if (!rd)
6480 return -ENOMEM;
6481
6482 rd->n_reg_rules = num_rules;
6483 rd->alpha2[0] = alpha2[0];
6484 rd->alpha2[1] = alpha2[1];
6485
6486 /*
6487 * Disable DFS master mode if the DFS region was
6488 * not supported or known on this kernel.
6489 */
6490 if (reg_supported_dfs_region(dfs_region))
6491 rd->dfs_region = dfs_region;
6492
6493 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6494 rem_reg_rules) {
6495 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6496 nl_reg_rule, reg_rule_policy,
6497 info->extack);
6498 if (r)
6499 goto bad_reg;
6500 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6501 if (r)
6502 goto bad_reg;
6503
6504 rule_idx++;
6505
6506 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6507 r = -EINVAL;
6508 goto bad_reg;
6509 }
6510 }
6511
6512 /* set_regdom takes ownership of rd */
6513 return set_regdom(rd, REGD_SOURCE_CRDA);
6514 bad_reg:
6515 kfree(rd);
6516 return r;
6517 }
6518 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6519
6520 static int validate_scan_freqs(struct nlattr *freqs)
6521 {
6522 struct nlattr *attr1, *attr2;
6523 int n_channels = 0, tmp1, tmp2;
6524
6525 nla_for_each_nested(attr1, freqs, tmp1)
6526 if (nla_len(attr1) != sizeof(u32))
6527 return 0;
6528
6529 nla_for_each_nested(attr1, freqs, tmp1) {
6530 n_channels++;
6531 /*
6532 * Some hardware has a limited channel list for
6533 * scanning, and it is pretty much nonsensical
6534 * to scan for a channel twice, so disallow that
6535 * and don't require drivers to check that the
6536 * channel list they get isn't longer than what
6537 * they can scan, as long as they can scan all
6538 * the channels they registered at once.
6539 */
6540 nla_for_each_nested(attr2, freqs, tmp2)
6541 if (attr1 != attr2 &&
6542 nla_get_u32(attr1) == nla_get_u32(attr2))
6543 return 0;
6544 }
6545
6546 return n_channels;
6547 }
6548
6549 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6550 {
6551 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6552 }
6553
6554 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6555 struct cfg80211_bss_selection *bss_select)
6556 {
6557 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6558 struct nlattr *nest;
6559 int err;
6560 bool found = false;
6561 int i;
6562
6563 /* only process one nested attribute */
6564 nest = nla_data(nla);
6565 if (!nla_ok(nest, nla_len(nest)))
6566 return -EINVAL;
6567
6568 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6569 nl80211_bss_select_policy, NULL);
6570 if (err)
6571 return err;
6572
6573 /* only one attribute may be given */
6574 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6575 if (attr[i]) {
6576 if (found)
6577 return -EINVAL;
6578 found = true;
6579 }
6580 }
6581
6582 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6583
6584 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6585 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6586
6587 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6588 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6589 bss_select->param.band_pref =
6590 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6591 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6592 return -EINVAL;
6593 }
6594
6595 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6596 struct nl80211_bss_select_rssi_adjust *adj_param;
6597
6598 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6599 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6600 bss_select->param.adjust.band = adj_param->band;
6601 bss_select->param.adjust.delta = adj_param->delta;
6602 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6603 return -EINVAL;
6604 }
6605
6606 /* user-space did not provide behaviour attribute */
6607 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6608 return -EINVAL;
6609
6610 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6611 return -EINVAL;
6612
6613 return 0;
6614 }
6615
6616 static int nl80211_parse_random_mac(struct nlattr **attrs,
6617 u8 *mac_addr, u8 *mac_addr_mask)
6618 {
6619 int i;
6620
6621 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6622 eth_zero_addr(mac_addr);
6623 eth_zero_addr(mac_addr_mask);
6624 mac_addr[0] = 0x2;
6625 mac_addr_mask[0] = 0x3;
6626
6627 return 0;
6628 }
6629
6630 /* need both or none */
6631 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6632 return -EINVAL;
6633
6634 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6635 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6636
6637 /* don't allow or configure an mcast address */
6638 if (!is_multicast_ether_addr(mac_addr_mask) ||
6639 is_multicast_ether_addr(mac_addr))
6640 return -EINVAL;
6641
6642 /*
6643 * allow users to pass a MAC address that has bits set outside
6644 * of the mask, but don't bother drivers with having to deal
6645 * with such bits
6646 */
6647 for (i = 0; i < ETH_ALEN; i++)
6648 mac_addr[i] &= mac_addr_mask[i];
6649
6650 return 0;
6651 }
6652
6653 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6654 {
6655 ASSERT_WDEV_LOCK(wdev);
6656
6657 if (!cfg80211_beaconing_iface_active(wdev))
6658 return true;
6659
6660 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6661 return true;
6662
6663 return regulatory_pre_cac_allowed(wdev->wiphy);
6664 }
6665
6666 static int
6667 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6668 void *request, struct nlattr **attrs,
6669 bool is_sched_scan)
6670 {
6671 u8 *mac_addr, *mac_addr_mask;
6672 u32 *flags;
6673 enum nl80211_feature_flags randomness_flag;
6674
6675 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6676 return 0;
6677
6678 if (is_sched_scan) {
6679 struct cfg80211_sched_scan_request *req = request;
6680
6681 randomness_flag = wdev ?
6682 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6683 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6684 flags = &req->flags;
6685 mac_addr = req->mac_addr;
6686 mac_addr_mask = req->mac_addr_mask;
6687 } else {
6688 struct cfg80211_scan_request *req = request;
6689
6690 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6691 flags = &req->flags;
6692 mac_addr = req->mac_addr;
6693 mac_addr_mask = req->mac_addr_mask;
6694 }
6695
6696 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6697
6698 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6699 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6700 return -EOPNOTSUPP;
6701
6702 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6703 int err;
6704
6705 if (!(wiphy->features & randomness_flag) ||
6706 (wdev && wdev->current_bss))
6707 return -EOPNOTSUPP;
6708
6709 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6710 if (err)
6711 return err;
6712 }
6713
6714 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6715 !wiphy_ext_feature_isset(wiphy,
6716 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6717 return -EOPNOTSUPP;
6718
6719 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6720 !wiphy_ext_feature_isset(wiphy,
6721 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6722 return -EOPNOTSUPP;
6723
6724 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6725 !wiphy_ext_feature_isset(wiphy,
6726 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6727 return -EOPNOTSUPP;
6728
6729 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6730 !wiphy_ext_feature_isset(wiphy,
6731 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6732 return -EOPNOTSUPP;
6733
6734 return 0;
6735 }
6736
6737 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6738 {
6739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6740 struct wireless_dev *wdev = info->user_ptr[1];
6741 struct cfg80211_scan_request *request;
6742 struct nlattr *attr;
6743 struct wiphy *wiphy;
6744 int err, tmp, n_ssids = 0, n_channels, i;
6745 size_t ie_len;
6746
6747 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6748 return -EINVAL;
6749
6750 wiphy = &rdev->wiphy;
6751
6752 if (wdev->iftype == NL80211_IFTYPE_NAN)
6753 return -EOPNOTSUPP;
6754
6755 if (!rdev->ops->scan)
6756 return -EOPNOTSUPP;
6757
6758 if (rdev->scan_req || rdev->scan_msg) {
6759 err = -EBUSY;
6760 goto unlock;
6761 }
6762
6763 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6764 n_channels = validate_scan_freqs(
6765 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6766 if (!n_channels) {
6767 err = -EINVAL;
6768 goto unlock;
6769 }
6770 } else {
6771 n_channels = ieee80211_get_num_supported_channels(wiphy);
6772 }
6773
6774 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6775 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6776 n_ssids++;
6777
6778 if (n_ssids > wiphy->max_scan_ssids) {
6779 err = -EINVAL;
6780 goto unlock;
6781 }
6782
6783 if (info->attrs[NL80211_ATTR_IE])
6784 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6785 else
6786 ie_len = 0;
6787
6788 if (ie_len > wiphy->max_scan_ie_len) {
6789 err = -EINVAL;
6790 goto unlock;
6791 }
6792
6793 request = kzalloc(sizeof(*request)
6794 + sizeof(*request->ssids) * n_ssids
6795 + sizeof(*request->channels) * n_channels
6796 + ie_len, GFP_KERNEL);
6797 if (!request) {
6798 err = -ENOMEM;
6799 goto unlock;
6800 }
6801
6802 if (n_ssids)
6803 request->ssids = (void *)&request->channels[n_channels];
6804 request->n_ssids = n_ssids;
6805 if (ie_len) {
6806 if (n_ssids)
6807 request->ie = (void *)(request->ssids + n_ssids);
6808 else
6809 request->ie = (void *)(request->channels + n_channels);
6810 }
6811
6812 i = 0;
6813 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6814 /* user specified, bail out if channel not found */
6815 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6816 struct ieee80211_channel *chan;
6817
6818 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6819
6820 if (!chan) {
6821 err = -EINVAL;
6822 goto out_free;
6823 }
6824
6825 /* ignore disabled channels */
6826 if (chan->flags & IEEE80211_CHAN_DISABLED)
6827 continue;
6828
6829 request->channels[i] = chan;
6830 i++;
6831 }
6832 } else {
6833 enum nl80211_band band;
6834
6835 /* all channels */
6836 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6837 int j;
6838
6839 if (!wiphy->bands[band])
6840 continue;
6841 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6842 struct ieee80211_channel *chan;
6843
6844 chan = &wiphy->bands[band]->channels[j];
6845
6846 if (chan->flags & IEEE80211_CHAN_DISABLED)
6847 continue;
6848
6849 request->channels[i] = chan;
6850 i++;
6851 }
6852 }
6853 }
6854
6855 if (!i) {
6856 err = -EINVAL;
6857 goto out_free;
6858 }
6859
6860 request->n_channels = i;
6861
6862 wdev_lock(wdev);
6863 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6864 struct ieee80211_channel *chan;
6865
6866 if (request->n_channels != 1) {
6867 wdev_unlock(wdev);
6868 err = -EBUSY;
6869 goto out_free;
6870 }
6871
6872 chan = request->channels[0];
6873 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6874 wdev_unlock(wdev);
6875 err = -EBUSY;
6876 goto out_free;
6877 }
6878 }
6879 wdev_unlock(wdev);
6880
6881 i = 0;
6882 if (n_ssids) {
6883 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6884 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6885 err = -EINVAL;
6886 goto out_free;
6887 }
6888 request->ssids[i].ssid_len = nla_len(attr);
6889 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6890 i++;
6891 }
6892 }
6893
6894 if (info->attrs[NL80211_ATTR_IE]) {
6895 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6896 memcpy((void *)request->ie,
6897 nla_data(info->attrs[NL80211_ATTR_IE]),
6898 request->ie_len);
6899 }
6900
6901 for (i = 0; i < NUM_NL80211_BANDS; i++)
6902 if (wiphy->bands[i])
6903 request->rates[i] =
6904 (1 << wiphy->bands[i]->n_bitrates) - 1;
6905
6906 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6907 nla_for_each_nested(attr,
6908 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6909 tmp) {
6910 enum nl80211_band band = nla_type(attr);
6911
6912 if (band < 0 || band >= NUM_NL80211_BANDS) {
6913 err = -EINVAL;
6914 goto out_free;
6915 }
6916
6917 if (!wiphy->bands[band])
6918 continue;
6919
6920 err = ieee80211_get_ratemask(wiphy->bands[band],
6921 nla_data(attr),
6922 nla_len(attr),
6923 &request->rates[band]);
6924 if (err)
6925 goto out_free;
6926 }
6927 }
6928
6929 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6930 if (!wiphy_ext_feature_isset(wiphy,
6931 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6932 err = -EOPNOTSUPP;
6933 goto out_free;
6934 }
6935
6936 request->duration =
6937 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6938 request->duration_mandatory =
6939 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6940 }
6941
6942 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6943 false);
6944 if (err)
6945 goto out_free;
6946
6947 request->no_cck =
6948 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6949
6950 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6951 * BSSID to scan for. This was problematic because that same attribute
6952 * was already used for another purpose (local random MAC address). The
6953 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6954 * compatibility with older userspace components, also use the
6955 * NL80211_ATTR_MAC value here if it can be determined to be used for
6956 * the specific BSSID use case instead of the random MAC address
6957 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6958 */
6959 if (info->attrs[NL80211_ATTR_BSSID])
6960 memcpy(request->bssid,
6961 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6962 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6963 info->attrs[NL80211_ATTR_MAC])
6964 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6965 ETH_ALEN);
6966 else
6967 eth_broadcast_addr(request->bssid);
6968
6969 request->wdev = wdev;
6970 request->wiphy = &rdev->wiphy;
6971 request->scan_start = jiffies;
6972
6973 rdev->scan_req = request;
6974 err = rdev_scan(rdev, request);
6975
6976 if (!err) {
6977 nl80211_send_scan_start(rdev, wdev);
6978 if (wdev->netdev)
6979 dev_hold(wdev->netdev);
6980 } else {
6981 out_free:
6982 rdev->scan_req = NULL;
6983 kfree(request);
6984 }
6985
6986 unlock:
6987 return err;
6988 }
6989
6990 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6991 {
6992 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6993 struct wireless_dev *wdev = info->user_ptr[1];
6994
6995 if (!rdev->ops->abort_scan)
6996 return -EOPNOTSUPP;
6997
6998 if (rdev->scan_msg)
6999 return 0;
7000
7001 if (!rdev->scan_req)
7002 return -ENOENT;
7003
7004 rdev_abort_scan(rdev, wdev);
7005 return 0;
7006 }
7007
7008 static int
7009 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7010 struct cfg80211_sched_scan_request *request,
7011 struct nlattr **attrs)
7012 {
7013 int tmp, err, i = 0;
7014 struct nlattr *attr;
7015
7016 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7017 u32 interval;
7018
7019 /*
7020 * If scan plans are not specified,
7021 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7022 * case one scan plan will be set with the specified scan
7023 * interval and infinite number of iterations.
7024 */
7025 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7026 if (!interval)
7027 return -EINVAL;
7028
7029 request->scan_plans[0].interval =
7030 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7031 if (!request->scan_plans[0].interval)
7032 return -EINVAL;
7033
7034 if (request->scan_plans[0].interval >
7035 wiphy->max_sched_scan_plan_interval)
7036 request->scan_plans[0].interval =
7037 wiphy->max_sched_scan_plan_interval;
7038
7039 return 0;
7040 }
7041
7042 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7043 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7044
7045 if (WARN_ON(i >= n_plans))
7046 return -EINVAL;
7047
7048 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7049 attr, nl80211_plan_policy, NULL);
7050 if (err)
7051 return err;
7052
7053 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7054 return -EINVAL;
7055
7056 request->scan_plans[i].interval =
7057 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7058 if (!request->scan_plans[i].interval ||
7059 request->scan_plans[i].interval >
7060 wiphy->max_sched_scan_plan_interval)
7061 return -EINVAL;
7062
7063 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7064 request->scan_plans[i].iterations =
7065 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7066 if (!request->scan_plans[i].iterations ||
7067 (request->scan_plans[i].iterations >
7068 wiphy->max_sched_scan_plan_iterations))
7069 return -EINVAL;
7070 } else if (i < n_plans - 1) {
7071 /*
7072 * All scan plans but the last one must specify
7073 * a finite number of iterations
7074 */
7075 return -EINVAL;
7076 }
7077
7078 i++;
7079 }
7080
7081 /*
7082 * The last scan plan must not specify the number of
7083 * iterations, it is supposed to run infinitely
7084 */
7085 if (request->scan_plans[n_plans - 1].iterations)
7086 return -EINVAL;
7087
7088 return 0;
7089 }
7090
7091 static struct cfg80211_sched_scan_request *
7092 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7093 struct nlattr **attrs, int max_match_sets)
7094 {
7095 struct cfg80211_sched_scan_request *request;
7096 struct nlattr *attr;
7097 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7098 enum nl80211_band band;
7099 size_t ie_len;
7100 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7101 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7102
7103 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7104 return ERR_PTR(-EINVAL);
7105
7106 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7107 n_channels = validate_scan_freqs(
7108 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7109 if (!n_channels)
7110 return ERR_PTR(-EINVAL);
7111 } else {
7112 n_channels = ieee80211_get_num_supported_channels(wiphy);
7113 }
7114
7115 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7116 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7117 tmp)
7118 n_ssids++;
7119
7120 if (n_ssids > wiphy->max_sched_scan_ssids)
7121 return ERR_PTR(-EINVAL);
7122
7123 /*
7124 * First, count the number of 'real' matchsets. Due to an issue with
7125 * the old implementation, matchsets containing only the RSSI attribute
7126 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7127 * RSSI for all matchsets, rather than their own matchset for reporting
7128 * all APs with a strong RSSI. This is needed to be compatible with
7129 * older userspace that treated a matchset with only the RSSI as the
7130 * global RSSI for all other matchsets - if there are other matchsets.
7131 */
7132 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7133 nla_for_each_nested(attr,
7134 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7135 tmp) {
7136 struct nlattr *rssi;
7137
7138 err = nla_parse_nested(tb,
7139 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7140 attr, nl80211_match_policy,
7141 NULL);
7142 if (err)
7143 return ERR_PTR(err);
7144
7145 /* SSID and BSSID are mutually exclusive */
7146 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7147 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7148 return ERR_PTR(-EINVAL);
7149
7150 /* add other standalone attributes here */
7151 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7152 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7153 n_match_sets++;
7154 continue;
7155 }
7156 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7157 if (rssi)
7158 default_match_rssi = nla_get_s32(rssi);
7159 }
7160 }
7161
7162 /* However, if there's no other matchset, add the RSSI one */
7163 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7164 n_match_sets = 1;
7165
7166 if (n_match_sets > max_match_sets)
7167 return ERR_PTR(-EINVAL);
7168
7169 if (attrs[NL80211_ATTR_IE])
7170 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7171 else
7172 ie_len = 0;
7173
7174 if (ie_len > wiphy->max_sched_scan_ie_len)
7175 return ERR_PTR(-EINVAL);
7176
7177 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7178 /*
7179 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7180 * each scan plan already specifies its own interval
7181 */
7182 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7183 return ERR_PTR(-EINVAL);
7184
7185 nla_for_each_nested(attr,
7186 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7187 n_plans++;
7188 } else {
7189 /*
7190 * The scan interval attribute is kept for backward
7191 * compatibility. If no scan plans are specified and sched scan
7192 * interval is specified, one scan plan will be set with this
7193 * scan interval and infinite number of iterations.
7194 */
7195 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7196 return ERR_PTR(-EINVAL);
7197
7198 n_plans = 1;
7199 }
7200
7201 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7202 return ERR_PTR(-EINVAL);
7203
7204 if (!wiphy_ext_feature_isset(
7205 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7206 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7207 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7208 return ERR_PTR(-EINVAL);
7209
7210 request = kzalloc(sizeof(*request)
7211 + sizeof(*request->ssids) * n_ssids
7212 + sizeof(*request->match_sets) * n_match_sets
7213 + sizeof(*request->scan_plans) * n_plans
7214 + sizeof(*request->channels) * n_channels
7215 + ie_len, GFP_KERNEL);
7216 if (!request)
7217 return ERR_PTR(-ENOMEM);
7218
7219 if (n_ssids)
7220 request->ssids = (void *)&request->channels[n_channels];
7221 request->n_ssids = n_ssids;
7222 if (ie_len) {
7223 if (n_ssids)
7224 request->ie = (void *)(request->ssids + n_ssids);
7225 else
7226 request->ie = (void *)(request->channels + n_channels);
7227 }
7228
7229 if (n_match_sets) {
7230 if (request->ie)
7231 request->match_sets = (void *)(request->ie + ie_len);
7232 else if (n_ssids)
7233 request->match_sets =
7234 (void *)(request->ssids + n_ssids);
7235 else
7236 request->match_sets =
7237 (void *)(request->channels + n_channels);
7238 }
7239 request->n_match_sets = n_match_sets;
7240
7241 if (n_match_sets)
7242 request->scan_plans = (void *)(request->match_sets +
7243 n_match_sets);
7244 else if (request->ie)
7245 request->scan_plans = (void *)(request->ie + ie_len);
7246 else if (n_ssids)
7247 request->scan_plans = (void *)(request->ssids + n_ssids);
7248 else
7249 request->scan_plans = (void *)(request->channels + n_channels);
7250
7251 request->n_scan_plans = n_plans;
7252
7253 i = 0;
7254 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7255 /* user specified, bail out if channel not found */
7256 nla_for_each_nested(attr,
7257 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7258 tmp) {
7259 struct ieee80211_channel *chan;
7260
7261 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7262
7263 if (!chan) {
7264 err = -EINVAL;
7265 goto out_free;
7266 }
7267
7268 /* ignore disabled channels */
7269 if (chan->flags & IEEE80211_CHAN_DISABLED)
7270 continue;
7271
7272 request->channels[i] = chan;
7273 i++;
7274 }
7275 } else {
7276 /* all channels */
7277 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7278 int j;
7279
7280 if (!wiphy->bands[band])
7281 continue;
7282 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7283 struct ieee80211_channel *chan;
7284
7285 chan = &wiphy->bands[band]->channels[j];
7286
7287 if (chan->flags & IEEE80211_CHAN_DISABLED)
7288 continue;
7289
7290 request->channels[i] = chan;
7291 i++;
7292 }
7293 }
7294 }
7295
7296 if (!i) {
7297 err = -EINVAL;
7298 goto out_free;
7299 }
7300
7301 request->n_channels = i;
7302
7303 i = 0;
7304 if (n_ssids) {
7305 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7306 tmp) {
7307 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7308 err = -EINVAL;
7309 goto out_free;
7310 }
7311 request->ssids[i].ssid_len = nla_len(attr);
7312 memcpy(request->ssids[i].ssid, nla_data(attr),
7313 nla_len(attr));
7314 i++;
7315 }
7316 }
7317
7318 i = 0;
7319 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7320 nla_for_each_nested(attr,
7321 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7322 tmp) {
7323 struct nlattr *ssid, *bssid, *rssi;
7324
7325 err = nla_parse_nested(tb,
7326 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7327 attr, nl80211_match_policy,
7328 NULL);
7329 if (err)
7330 goto out_free;
7331 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7332 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7333 if (ssid || bssid) {
7334 if (WARN_ON(i >= n_match_sets)) {
7335 /* this indicates a programming error,
7336 * the loop above should have verified
7337 * things properly
7338 */
7339 err = -EINVAL;
7340 goto out_free;
7341 }
7342
7343 if (ssid) {
7344 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7345 err = -EINVAL;
7346 goto out_free;
7347 }
7348 memcpy(request->match_sets[i].ssid.ssid,
7349 nla_data(ssid), nla_len(ssid));
7350 request->match_sets[i].ssid.ssid_len =
7351 nla_len(ssid);
7352 }
7353 if (bssid) {
7354 if (nla_len(bssid) != ETH_ALEN) {
7355 err = -EINVAL;
7356 goto out_free;
7357 }
7358 memcpy(request->match_sets[i].bssid,
7359 nla_data(bssid), ETH_ALEN);
7360 }
7361
7362 /* special attribute - old implementation w/a */
7363 request->match_sets[i].rssi_thold =
7364 default_match_rssi;
7365 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7366 if (rssi)
7367 request->match_sets[i].rssi_thold =
7368 nla_get_s32(rssi);
7369 }
7370 i++;
7371 }
7372
7373 /* there was no other matchset, so the RSSI one is alone */
7374 if (i == 0 && n_match_sets)
7375 request->match_sets[0].rssi_thold = default_match_rssi;
7376
7377 request->min_rssi_thold = INT_MAX;
7378 for (i = 0; i < n_match_sets; i++)
7379 request->min_rssi_thold =
7380 min(request->match_sets[i].rssi_thold,
7381 request->min_rssi_thold);
7382 } else {
7383 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7384 }
7385
7386 if (ie_len) {
7387 request->ie_len = ie_len;
7388 memcpy((void *)request->ie,
7389 nla_data(attrs[NL80211_ATTR_IE]),
7390 request->ie_len);
7391 }
7392
7393 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7394 if (err)
7395 goto out_free;
7396
7397 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7398 request->delay =
7399 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7400
7401 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7402 request->relative_rssi = nla_get_s8(
7403 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7404 request->relative_rssi_set = true;
7405 }
7406
7407 if (request->relative_rssi_set &&
7408 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7409 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7410
7411 rssi_adjust = nla_data(
7412 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7413 request->rssi_adjust.band = rssi_adjust->band;
7414 request->rssi_adjust.delta = rssi_adjust->delta;
7415 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7416 err = -EINVAL;
7417 goto out_free;
7418 }
7419 }
7420
7421 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7422 if (err)
7423 goto out_free;
7424
7425 request->scan_start = jiffies;
7426
7427 return request;
7428
7429 out_free:
7430 kfree(request);
7431 return ERR_PTR(err);
7432 }
7433
7434 static int nl80211_start_sched_scan(struct sk_buff *skb,
7435 struct genl_info *info)
7436 {
7437 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7438 struct net_device *dev = info->user_ptr[1];
7439 struct wireless_dev *wdev = dev->ieee80211_ptr;
7440 struct cfg80211_sched_scan_request *sched_scan_req;
7441 bool want_multi;
7442 int err;
7443
7444 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7445 return -EOPNOTSUPP;
7446
7447 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7448 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7449 if (err)
7450 return err;
7451
7452 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7453 info->attrs,
7454 rdev->wiphy.max_match_sets);
7455
7456 err = PTR_ERR_OR_ZERO(sched_scan_req);
7457 if (err)
7458 goto out_err;
7459
7460 /* leave request id zero for legacy request
7461 * or if driver does not support multi-scheduled scan
7462 */
7463 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7464 while (!sched_scan_req->reqid)
7465 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7466 }
7467
7468 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7469 if (err)
7470 goto out_free;
7471
7472 sched_scan_req->dev = dev;
7473 sched_scan_req->wiphy = &rdev->wiphy;
7474
7475 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7476 sched_scan_req->owner_nlportid = info->snd_portid;
7477
7478 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7479
7480 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7481 return 0;
7482
7483 out_free:
7484 kfree(sched_scan_req);
7485 out_err:
7486 return err;
7487 }
7488
7489 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7490 struct genl_info *info)
7491 {
7492 struct cfg80211_sched_scan_request *req;
7493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7494 u64 cookie;
7495
7496 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7497 return -EOPNOTSUPP;
7498
7499 if (info->attrs[NL80211_ATTR_COOKIE]) {
7500 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7501 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7502 }
7503
7504 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7505 struct cfg80211_sched_scan_request,
7506 list);
7507 if (!req || req->reqid ||
7508 (req->owner_nlportid &&
7509 req->owner_nlportid != info->snd_portid))
7510 return -ENOENT;
7511
7512 return cfg80211_stop_sched_scan_req(rdev, req, false);
7513 }
7514
7515 static int nl80211_start_radar_detection(struct sk_buff *skb,
7516 struct genl_info *info)
7517 {
7518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7519 struct net_device *dev = info->user_ptr[1];
7520 struct wireless_dev *wdev = dev->ieee80211_ptr;
7521 struct cfg80211_chan_def chandef;
7522 enum nl80211_dfs_regions dfs_region;
7523 unsigned int cac_time_ms;
7524 int err;
7525
7526 dfs_region = reg_get_dfs_region(wdev->wiphy);
7527 if (dfs_region == NL80211_DFS_UNSET)
7528 return -EINVAL;
7529
7530 err = nl80211_parse_chandef(rdev, info, &chandef);
7531 if (err)
7532 return err;
7533
7534 if (netif_carrier_ok(dev))
7535 return -EBUSY;
7536
7537 if (wdev->cac_started)
7538 return -EBUSY;
7539
7540 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7541 wdev->iftype);
7542 if (err < 0)
7543 return err;
7544
7545 if (err == 0)
7546 return -EINVAL;
7547
7548 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7549 return -EINVAL;
7550
7551 if (!rdev->ops->start_radar_detection)
7552 return -EOPNOTSUPP;
7553
7554 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7555 if (WARN_ON(!cac_time_ms))
7556 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7557
7558 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7559 if (!err) {
7560 wdev->chandef = chandef;
7561 wdev->cac_started = true;
7562 wdev->cac_start_time = jiffies;
7563 wdev->cac_time_ms = cac_time_ms;
7564 }
7565 return err;
7566 }
7567
7568 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7569 {
7570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7571 struct net_device *dev = info->user_ptr[1];
7572 struct wireless_dev *wdev = dev->ieee80211_ptr;
7573 struct cfg80211_csa_settings params;
7574 /* csa_attrs is defined static to avoid waste of stack size - this
7575 * function is called under RTNL lock, so this should not be a problem.
7576 */
7577 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7578 int err;
7579 bool need_new_beacon = false;
7580 bool need_handle_dfs_flag = true;
7581 int len, i;
7582 u32 cs_count;
7583
7584 if (!rdev->ops->channel_switch ||
7585 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7586 return -EOPNOTSUPP;
7587
7588 switch (dev->ieee80211_ptr->iftype) {
7589 case NL80211_IFTYPE_AP:
7590 case NL80211_IFTYPE_P2P_GO:
7591 need_new_beacon = true;
7592 /* For all modes except AP the handle_dfs flag needs to be
7593 * supplied to tell the kernel that userspace will handle radar
7594 * events when they happen. Otherwise a switch to a channel
7595 * requiring DFS will be rejected.
7596 */
7597 need_handle_dfs_flag = false;
7598
7599 /* useless if AP is not running */
7600 if (!wdev->beacon_interval)
7601 return -ENOTCONN;
7602 break;
7603 case NL80211_IFTYPE_ADHOC:
7604 if (!wdev->ssid_len)
7605 return -ENOTCONN;
7606 break;
7607 case NL80211_IFTYPE_MESH_POINT:
7608 if (!wdev->mesh_id_len)
7609 return -ENOTCONN;
7610 break;
7611 default:
7612 return -EOPNOTSUPP;
7613 }
7614
7615 memset(&params, 0, sizeof(params));
7616
7617 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7618 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7619 return -EINVAL;
7620
7621 /* only important for AP, IBSS and mesh create IEs internally */
7622 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7623 return -EINVAL;
7624
7625 /* Even though the attribute is u32, the specification says
7626 * u8, so let's make sure we don't overflow.
7627 */
7628 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7629 if (cs_count > 255)
7630 return -EINVAL;
7631
7632 params.count = cs_count;
7633
7634 if (!need_new_beacon)
7635 goto skip_beacons;
7636
7637 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7638 if (err)
7639 return err;
7640
7641 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7642 info->attrs[NL80211_ATTR_CSA_IES],
7643 nl80211_policy, info->extack);
7644 if (err)
7645 return err;
7646
7647 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7648 if (err)
7649 return err;
7650
7651 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7652 return -EINVAL;
7653
7654 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7655 if (!len || (len % sizeof(u16)))
7656 return -EINVAL;
7657
7658 params.n_counter_offsets_beacon = len / sizeof(u16);
7659 if (rdev->wiphy.max_num_csa_counters &&
7660 (params.n_counter_offsets_beacon >
7661 rdev->wiphy.max_num_csa_counters))
7662 return -EINVAL;
7663
7664 params.counter_offsets_beacon =
7665 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7666
7667 /* sanity checks - counters should fit and be the same */
7668 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7669 u16 offset = params.counter_offsets_beacon[i];
7670
7671 if (offset >= params.beacon_csa.tail_len)
7672 return -EINVAL;
7673
7674 if (params.beacon_csa.tail[offset] != params.count)
7675 return -EINVAL;
7676 }
7677
7678 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7679 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7680 if (!len || (len % sizeof(u16)))
7681 return -EINVAL;
7682
7683 params.n_counter_offsets_presp = len / sizeof(u16);
7684 if (rdev->wiphy.max_num_csa_counters &&
7685 (params.n_counter_offsets_presp >
7686 rdev->wiphy.max_num_csa_counters))
7687 return -EINVAL;
7688
7689 params.counter_offsets_presp =
7690 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7691
7692 /* sanity checks - counters should fit and be the same */
7693 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7694 u16 offset = params.counter_offsets_presp[i];
7695
7696 if (offset >= params.beacon_csa.probe_resp_len)
7697 return -EINVAL;
7698
7699 if (params.beacon_csa.probe_resp[offset] !=
7700 params.count)
7701 return -EINVAL;
7702 }
7703 }
7704
7705 skip_beacons:
7706 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7707 if (err)
7708 return err;
7709
7710 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7711 wdev->iftype))
7712 return -EINVAL;
7713
7714 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7715 &params.chandef,
7716 wdev->iftype);
7717 if (err < 0)
7718 return err;
7719
7720 if (err > 0) {
7721 params.radar_required = true;
7722 if (need_handle_dfs_flag &&
7723 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7724 return -EINVAL;
7725 }
7726 }
7727
7728 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7729 params.block_tx = true;
7730
7731 wdev_lock(wdev);
7732 err = rdev_channel_switch(rdev, dev, &params);
7733 wdev_unlock(wdev);
7734
7735 return err;
7736 }
7737
7738 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7739 u32 seq, int flags,
7740 struct cfg80211_registered_device *rdev,
7741 struct wireless_dev *wdev,
7742 struct cfg80211_internal_bss *intbss)
7743 {
7744 struct cfg80211_bss *res = &intbss->pub;
7745 const struct cfg80211_bss_ies *ies;
7746 void *hdr;
7747 struct nlattr *bss;
7748
7749 ASSERT_WDEV_LOCK(wdev);
7750
7751 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7752 NL80211_CMD_NEW_SCAN_RESULTS);
7753 if (!hdr)
7754 return -1;
7755
7756 genl_dump_check_consistent(cb, hdr);
7757
7758 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7759 goto nla_put_failure;
7760 if (wdev->netdev &&
7761 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7762 goto nla_put_failure;
7763 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7764 NL80211_ATTR_PAD))
7765 goto nla_put_failure;
7766
7767 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7768 if (!bss)
7769 goto nla_put_failure;
7770 if ((!is_zero_ether_addr(res->bssid) &&
7771 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7772 goto nla_put_failure;
7773
7774 rcu_read_lock();
7775 /* indicate whether we have probe response data or not */
7776 if (rcu_access_pointer(res->proberesp_ies) &&
7777 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7778 goto fail_unlock_rcu;
7779
7780 /* this pointer prefers to be pointed to probe response data
7781 * but is always valid
7782 */
7783 ies = rcu_dereference(res->ies);
7784 if (ies) {
7785 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7786 NL80211_BSS_PAD))
7787 goto fail_unlock_rcu;
7788 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7789 ies->len, ies->data))
7790 goto fail_unlock_rcu;
7791 }
7792
7793 /* and this pointer is always (unless driver didn't know) beacon data */
7794 ies = rcu_dereference(res->beacon_ies);
7795 if (ies && ies->from_beacon) {
7796 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7797 NL80211_BSS_PAD))
7798 goto fail_unlock_rcu;
7799 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7800 ies->len, ies->data))
7801 goto fail_unlock_rcu;
7802 }
7803 rcu_read_unlock();
7804
7805 if (res->beacon_interval &&
7806 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7807 goto nla_put_failure;
7808 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7809 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7810 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7811 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7812 jiffies_to_msecs(jiffies - intbss->ts)))
7813 goto nla_put_failure;
7814
7815 if (intbss->parent_tsf &&
7816 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7817 intbss->parent_tsf, NL80211_BSS_PAD) ||
7818 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7819 intbss->parent_bssid)))
7820 goto nla_put_failure;
7821
7822 if (intbss->ts_boottime &&
7823 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7824 intbss->ts_boottime, NL80211_BSS_PAD))
7825 goto nla_put_failure;
7826
7827 switch (rdev->wiphy.signal_type) {
7828 case CFG80211_SIGNAL_TYPE_MBM:
7829 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7830 goto nla_put_failure;
7831 break;
7832 case CFG80211_SIGNAL_TYPE_UNSPEC:
7833 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7834 goto nla_put_failure;
7835 break;
7836 default:
7837 break;
7838 }
7839
7840 switch (wdev->iftype) {
7841 case NL80211_IFTYPE_P2P_CLIENT:
7842 case NL80211_IFTYPE_STATION:
7843 if (intbss == wdev->current_bss &&
7844 nla_put_u32(msg, NL80211_BSS_STATUS,
7845 NL80211_BSS_STATUS_ASSOCIATED))
7846 goto nla_put_failure;
7847 break;
7848 case NL80211_IFTYPE_ADHOC:
7849 if (intbss == wdev->current_bss &&
7850 nla_put_u32(msg, NL80211_BSS_STATUS,
7851 NL80211_BSS_STATUS_IBSS_JOINED))
7852 goto nla_put_failure;
7853 break;
7854 default:
7855 break;
7856 }
7857
7858 nla_nest_end(msg, bss);
7859
7860 genlmsg_end(msg, hdr);
7861 return 0;
7862
7863 fail_unlock_rcu:
7864 rcu_read_unlock();
7865 nla_put_failure:
7866 genlmsg_cancel(msg, hdr);
7867 return -EMSGSIZE;
7868 }
7869
7870 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7871 {
7872 struct cfg80211_registered_device *rdev;
7873 struct cfg80211_internal_bss *scan;
7874 struct wireless_dev *wdev;
7875 int start = cb->args[2], idx = 0;
7876 int err;
7877
7878 rtnl_lock();
7879 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7880 if (err) {
7881 rtnl_unlock();
7882 return err;
7883 }
7884
7885 wdev_lock(wdev);
7886 spin_lock_bh(&rdev->bss_lock);
7887 cfg80211_bss_expire(rdev);
7888
7889 cb->seq = rdev->bss_generation;
7890
7891 list_for_each_entry(scan, &rdev->bss_list, list) {
7892 if (++idx <= start)
7893 continue;
7894 if (nl80211_send_bss(skb, cb,
7895 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7896 rdev, wdev, scan) < 0) {
7897 idx--;
7898 break;
7899 }
7900 }
7901
7902 spin_unlock_bh(&rdev->bss_lock);
7903 wdev_unlock(wdev);
7904
7905 cb->args[2] = idx;
7906 rtnl_unlock();
7907
7908 return skb->len;
7909 }
7910
7911 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7912 int flags, struct net_device *dev,
7913 bool allow_radio_stats,
7914 struct survey_info *survey)
7915 {
7916 void *hdr;
7917 struct nlattr *infoattr;
7918
7919 /* skip radio stats if userspace didn't request them */
7920 if (!survey->channel && !allow_radio_stats)
7921 return 0;
7922
7923 hdr = nl80211hdr_put(msg, portid, seq, flags,
7924 NL80211_CMD_NEW_SURVEY_RESULTS);
7925 if (!hdr)
7926 return -ENOMEM;
7927
7928 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7929 goto nla_put_failure;
7930
7931 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7932 if (!infoattr)
7933 goto nla_put_failure;
7934
7935 if (survey->channel &&
7936 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7937 survey->channel->center_freq))
7938 goto nla_put_failure;
7939
7940 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7941 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7942 goto nla_put_failure;
7943 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7944 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7945 goto nla_put_failure;
7946 if ((survey->filled & SURVEY_INFO_TIME) &&
7947 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7948 survey->time, NL80211_SURVEY_INFO_PAD))
7949 goto nla_put_failure;
7950 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7951 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7952 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7953 goto nla_put_failure;
7954 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7955 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7956 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7957 goto nla_put_failure;
7958 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7959 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7960 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7961 goto nla_put_failure;
7962 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7963 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7964 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7965 goto nla_put_failure;
7966 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7967 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7968 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7969 goto nla_put_failure;
7970
7971 nla_nest_end(msg, infoattr);
7972
7973 genlmsg_end(msg, hdr);
7974 return 0;
7975
7976 nla_put_failure:
7977 genlmsg_cancel(msg, hdr);
7978 return -EMSGSIZE;
7979 }
7980
7981 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7982 {
7983 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7984 struct survey_info survey;
7985 struct cfg80211_registered_device *rdev;
7986 struct wireless_dev *wdev;
7987 int survey_idx = cb->args[2];
7988 int res;
7989 bool radio_stats;
7990
7991 rtnl_lock();
7992 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7993 if (res)
7994 goto out_err;
7995
7996 /* prepare_wdev_dump parsed the attributes */
7997 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7998
7999 if (!wdev->netdev) {
8000 res = -EINVAL;
8001 goto out_err;
8002 }
8003
8004 if (!rdev->ops->dump_survey) {
8005 res = -EOPNOTSUPP;
8006 goto out_err;
8007 }
8008
8009 while (1) {
8010 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8011 if (res == -ENOENT)
8012 break;
8013 if (res)
8014 goto out_err;
8015
8016 /* don't send disabled channels, but do send non-channel data */
8017 if (survey.channel &&
8018 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8019 survey_idx++;
8020 continue;
8021 }
8022
8023 if (nl80211_send_survey(skb,
8024 NETLINK_CB(cb->skb).portid,
8025 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8026 wdev->netdev, radio_stats, &survey) < 0)
8027 goto out;
8028 survey_idx++;
8029 }
8030
8031 out:
8032 cb->args[2] = survey_idx;
8033 res = skb->len;
8034 out_err:
8035 rtnl_unlock();
8036 return res;
8037 }
8038
8039 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8040 {
8041 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8042 NL80211_WPA_VERSION_2));
8043 }
8044
8045 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8046 {
8047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8048 struct net_device *dev = info->user_ptr[1];
8049 struct ieee80211_channel *chan;
8050 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8051 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8052 enum nl80211_auth_type auth_type;
8053 struct key_parse key;
8054 bool local_state_change;
8055
8056 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8057 return -EINVAL;
8058
8059 if (!info->attrs[NL80211_ATTR_MAC])
8060 return -EINVAL;
8061
8062 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8063 return -EINVAL;
8064
8065 if (!info->attrs[NL80211_ATTR_SSID])
8066 return -EINVAL;
8067
8068 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8069 return -EINVAL;
8070
8071 err = nl80211_parse_key(info, &key);
8072 if (err)
8073 return err;
8074
8075 if (key.idx >= 0) {
8076 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8077 return -EINVAL;
8078 if (!key.p.key || !key.p.key_len)
8079 return -EINVAL;
8080 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8081 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8082 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8083 key.p.key_len != WLAN_KEY_LEN_WEP104))
8084 return -EINVAL;
8085 if (key.idx > 3)
8086 return -EINVAL;
8087 } else {
8088 key.p.key_len = 0;
8089 key.p.key = NULL;
8090 }
8091
8092 if (key.idx >= 0) {
8093 int i;
8094 bool ok = false;
8095
8096 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8097 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8098 ok = true;
8099 break;
8100 }
8101 }
8102 if (!ok)
8103 return -EINVAL;
8104 }
8105
8106 if (!rdev->ops->auth)
8107 return -EOPNOTSUPP;
8108
8109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8110 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8111 return -EOPNOTSUPP;
8112
8113 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8114 chan = nl80211_get_valid_chan(&rdev->wiphy,
8115 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8116 if (!chan)
8117 return -EINVAL;
8118
8119 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8120 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8121
8122 if (info->attrs[NL80211_ATTR_IE]) {
8123 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8124 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8125 }
8126
8127 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8128 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8129 return -EINVAL;
8130
8131 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8132 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8133 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8134 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8135 !info->attrs[NL80211_ATTR_AUTH_DATA])
8136 return -EINVAL;
8137
8138 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8139 if (auth_type != NL80211_AUTHTYPE_SAE &&
8140 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8141 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8142 auth_type != NL80211_AUTHTYPE_FILS_PK)
8143 return -EINVAL;
8144 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8145 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8146 /* need to include at least Auth Transaction and Status Code */
8147 if (auth_data_len < 4)
8148 return -EINVAL;
8149 }
8150
8151 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8152
8153 /*
8154 * Since we no longer track auth state, ignore
8155 * requests to only change local state.
8156 */
8157 if (local_state_change)
8158 return 0;
8159
8160 wdev_lock(dev->ieee80211_ptr);
8161 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8162 ssid, ssid_len, ie, ie_len,
8163 key.p.key, key.p.key_len, key.idx,
8164 auth_data, auth_data_len);
8165 wdev_unlock(dev->ieee80211_ptr);
8166 return err;
8167 }
8168
8169 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8170 struct genl_info *info,
8171 struct cfg80211_crypto_settings *settings,
8172 int cipher_limit)
8173 {
8174 memset(settings, 0, sizeof(*settings));
8175
8176 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8177
8178 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8179 u16 proto;
8180
8181 proto = nla_get_u16(
8182 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8183 settings->control_port_ethertype = cpu_to_be16(proto);
8184 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8185 proto != ETH_P_PAE)
8186 return -EINVAL;
8187 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8188 settings->control_port_no_encrypt = true;
8189 } else
8190 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8191
8192 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8193 void *data;
8194 int len, i;
8195
8196 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8197 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8198 settings->n_ciphers_pairwise = len / sizeof(u32);
8199
8200 if (len % sizeof(u32))
8201 return -EINVAL;
8202
8203 if (settings->n_ciphers_pairwise > cipher_limit)
8204 return -EINVAL;
8205
8206 memcpy(settings->ciphers_pairwise, data, len);
8207
8208 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8209 if (!cfg80211_supported_cipher_suite(
8210 &rdev->wiphy,
8211 settings->ciphers_pairwise[i]))
8212 return -EINVAL;
8213 }
8214
8215 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8216 settings->cipher_group =
8217 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8218 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8219 settings->cipher_group))
8220 return -EINVAL;
8221 }
8222
8223 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8224 settings->wpa_versions =
8225 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8226 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8227 return -EINVAL;
8228 }
8229
8230 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8231 void *data;
8232 int len;
8233
8234 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8235 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8236 settings->n_akm_suites = len / sizeof(u32);
8237
8238 if (len % sizeof(u32))
8239 return -EINVAL;
8240
8241 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8242 return -EINVAL;
8243
8244 memcpy(settings->akm_suites, data, len);
8245 }
8246
8247 if (info->attrs[NL80211_ATTR_PMK]) {
8248 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8249 return -EINVAL;
8250 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8251 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8252 return -EINVAL;
8253 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8254 }
8255
8256 return 0;
8257 }
8258
8259 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8260 {
8261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8262 struct net_device *dev = info->user_ptr[1];
8263 struct ieee80211_channel *chan;
8264 struct cfg80211_assoc_request req = {};
8265 const u8 *bssid, *ssid;
8266 int err, ssid_len = 0;
8267
8268 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8269 return -EINVAL;
8270
8271 if (!info->attrs[NL80211_ATTR_MAC] ||
8272 !info->attrs[NL80211_ATTR_SSID] ||
8273 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8274 return -EINVAL;
8275
8276 if (!rdev->ops->assoc)
8277 return -EOPNOTSUPP;
8278
8279 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8280 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8281 return -EOPNOTSUPP;
8282
8283 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8284
8285 chan = nl80211_get_valid_chan(&rdev->wiphy,
8286 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8287 if (!chan)
8288 return -EINVAL;
8289
8290 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8291 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8292
8293 if (info->attrs[NL80211_ATTR_IE]) {
8294 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8295 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8296 }
8297
8298 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8299 enum nl80211_mfp mfp =
8300 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8301 if (mfp == NL80211_MFP_REQUIRED)
8302 req.use_mfp = true;
8303 else if (mfp != NL80211_MFP_NO)
8304 return -EINVAL;
8305 }
8306
8307 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8308 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8309
8310 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8311 req.flags |= ASSOC_REQ_DISABLE_HT;
8312
8313 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8314 memcpy(&req.ht_capa_mask,
8315 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8316 sizeof(req.ht_capa_mask));
8317
8318 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8319 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8320 return -EINVAL;
8321 memcpy(&req.ht_capa,
8322 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8323 sizeof(req.ht_capa));
8324 }
8325
8326 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8327 req.flags |= ASSOC_REQ_DISABLE_VHT;
8328
8329 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8330 memcpy(&req.vht_capa_mask,
8331 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8332 sizeof(req.vht_capa_mask));
8333
8334 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8335 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8336 return -EINVAL;
8337 memcpy(&req.vht_capa,
8338 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8339 sizeof(req.vht_capa));
8340 }
8341
8342 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8343 if (!((rdev->wiphy.features &
8344 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8345 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8346 !wiphy_ext_feature_isset(&rdev->wiphy,
8347 NL80211_EXT_FEATURE_RRM))
8348 return -EINVAL;
8349 req.flags |= ASSOC_REQ_USE_RRM;
8350 }
8351
8352 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8353 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8354 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8355 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8356 return -EINVAL;
8357 req.fils_nonces =
8358 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8359 }
8360
8361 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8362 if (!err) {
8363 wdev_lock(dev->ieee80211_ptr);
8364
8365 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8366 ssid, ssid_len, &req);
8367
8368 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8369 dev->ieee80211_ptr->conn_owner_nlportid =
8370 info->snd_portid;
8371 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8372 bssid, ETH_ALEN);
8373 }
8374
8375 wdev_unlock(dev->ieee80211_ptr);
8376 }
8377
8378 return err;
8379 }
8380
8381 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8382 {
8383 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8384 struct net_device *dev = info->user_ptr[1];
8385 const u8 *ie = NULL, *bssid;
8386 int ie_len = 0, err;
8387 u16 reason_code;
8388 bool local_state_change;
8389
8390 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8391 return -EINVAL;
8392
8393 if (!info->attrs[NL80211_ATTR_MAC])
8394 return -EINVAL;
8395
8396 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8397 return -EINVAL;
8398
8399 if (!rdev->ops->deauth)
8400 return -EOPNOTSUPP;
8401
8402 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8403 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8404 return -EOPNOTSUPP;
8405
8406 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8407
8408 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8409 if (reason_code == 0) {
8410 /* Reason Code 0 is reserved */
8411 return -EINVAL;
8412 }
8413
8414 if (info->attrs[NL80211_ATTR_IE]) {
8415 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8416 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8417 }
8418
8419 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8420
8421 wdev_lock(dev->ieee80211_ptr);
8422 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8423 local_state_change);
8424 wdev_unlock(dev->ieee80211_ptr);
8425 return err;
8426 }
8427
8428 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8429 {
8430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8431 struct net_device *dev = info->user_ptr[1];
8432 const u8 *ie = NULL, *bssid;
8433 int ie_len = 0, err;
8434 u16 reason_code;
8435 bool local_state_change;
8436
8437 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8438 return -EINVAL;
8439
8440 if (!info->attrs[NL80211_ATTR_MAC])
8441 return -EINVAL;
8442
8443 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8444 return -EINVAL;
8445
8446 if (!rdev->ops->disassoc)
8447 return -EOPNOTSUPP;
8448
8449 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8450 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8451 return -EOPNOTSUPP;
8452
8453 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8454
8455 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8456 if (reason_code == 0) {
8457 /* Reason Code 0 is reserved */
8458 return -EINVAL;
8459 }
8460
8461 if (info->attrs[NL80211_ATTR_IE]) {
8462 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8463 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8464 }
8465
8466 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8467
8468 wdev_lock(dev->ieee80211_ptr);
8469 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8470 local_state_change);
8471 wdev_unlock(dev->ieee80211_ptr);
8472 return err;
8473 }
8474
8475 static bool
8476 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8477 int mcast_rate[NUM_NL80211_BANDS],
8478 int rateval)
8479 {
8480 struct wiphy *wiphy = &rdev->wiphy;
8481 bool found = false;
8482 int band, i;
8483
8484 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8485 struct ieee80211_supported_band *sband;
8486
8487 sband = wiphy->bands[band];
8488 if (!sband)
8489 continue;
8490
8491 for (i = 0; i < sband->n_bitrates; i++) {
8492 if (sband->bitrates[i].bitrate == rateval) {
8493 mcast_rate[band] = i + 1;
8494 found = true;
8495 break;
8496 }
8497 }
8498 }
8499
8500 return found;
8501 }
8502
8503 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8504 {
8505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8506 struct net_device *dev = info->user_ptr[1];
8507 struct cfg80211_ibss_params ibss;
8508 struct wiphy *wiphy;
8509 struct cfg80211_cached_keys *connkeys = NULL;
8510 int err;
8511
8512 memset(&ibss, 0, sizeof(ibss));
8513
8514 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8515 return -EINVAL;
8516
8517 if (!info->attrs[NL80211_ATTR_SSID] ||
8518 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8519 return -EINVAL;
8520
8521 ibss.beacon_interval = 100;
8522
8523 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8524 ibss.beacon_interval =
8525 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8526
8527 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8528 ibss.beacon_interval);
8529 if (err)
8530 return err;
8531
8532 if (!rdev->ops->join_ibss)
8533 return -EOPNOTSUPP;
8534
8535 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8536 return -EOPNOTSUPP;
8537
8538 wiphy = &rdev->wiphy;
8539
8540 if (info->attrs[NL80211_ATTR_MAC]) {
8541 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8542
8543 if (!is_valid_ether_addr(ibss.bssid))
8544 return -EINVAL;
8545 }
8546 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8547 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8548
8549 if (info->attrs[NL80211_ATTR_IE]) {
8550 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8551 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8552 }
8553
8554 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8555 if (err)
8556 return err;
8557
8558 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8559 NL80211_IFTYPE_ADHOC))
8560 return -EINVAL;
8561
8562 switch (ibss.chandef.width) {
8563 case NL80211_CHAN_WIDTH_5:
8564 case NL80211_CHAN_WIDTH_10:
8565 case NL80211_CHAN_WIDTH_20_NOHT:
8566 break;
8567 case NL80211_CHAN_WIDTH_20:
8568 case NL80211_CHAN_WIDTH_40:
8569 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8570 return -EINVAL;
8571 break;
8572 case NL80211_CHAN_WIDTH_80:
8573 case NL80211_CHAN_WIDTH_80P80:
8574 case NL80211_CHAN_WIDTH_160:
8575 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8576 return -EINVAL;
8577 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8578 NL80211_EXT_FEATURE_VHT_IBSS))
8579 return -EINVAL;
8580 break;
8581 default:
8582 return -EINVAL;
8583 }
8584
8585 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8586 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8587
8588 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8589 u8 *rates =
8590 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8591 int n_rates =
8592 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8593 struct ieee80211_supported_band *sband =
8594 wiphy->bands[ibss.chandef.chan->band];
8595
8596 err = ieee80211_get_ratemask(sband, rates, n_rates,
8597 &ibss.basic_rates);
8598 if (err)
8599 return err;
8600 }
8601
8602 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8603 memcpy(&ibss.ht_capa_mask,
8604 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8605 sizeof(ibss.ht_capa_mask));
8606
8607 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8608 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8609 return -EINVAL;
8610 memcpy(&ibss.ht_capa,
8611 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8612 sizeof(ibss.ht_capa));
8613 }
8614
8615 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8616 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8617 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8618 return -EINVAL;
8619
8620 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8621 bool no_ht = false;
8622
8623 connkeys = nl80211_parse_connkeys(rdev,
8624 info->attrs[NL80211_ATTR_KEYS],
8625 &no_ht);
8626 if (IS_ERR(connkeys))
8627 return PTR_ERR(connkeys);
8628
8629 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8630 no_ht) {
8631 kzfree(connkeys);
8632 return -EINVAL;
8633 }
8634 }
8635
8636 ibss.control_port =
8637 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8638
8639 ibss.userspace_handles_dfs =
8640 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8641
8642 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8643 if (err)
8644 kzfree(connkeys);
8645 return err;
8646 }
8647
8648 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8649 {
8650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8651 struct net_device *dev = info->user_ptr[1];
8652
8653 if (!rdev->ops->leave_ibss)
8654 return -EOPNOTSUPP;
8655
8656 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8657 return -EOPNOTSUPP;
8658
8659 return cfg80211_leave_ibss(rdev, dev, false);
8660 }
8661
8662 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8663 {
8664 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8665 struct net_device *dev = info->user_ptr[1];
8666 int mcast_rate[NUM_NL80211_BANDS];
8667 u32 nla_rate;
8668 int err;
8669
8670 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8671 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8672 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8673 return -EOPNOTSUPP;
8674
8675 if (!rdev->ops->set_mcast_rate)
8676 return -EOPNOTSUPP;
8677
8678 memset(mcast_rate, 0, sizeof(mcast_rate));
8679
8680 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8681 return -EINVAL;
8682
8683 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8684 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8685 return -EINVAL;
8686
8687 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8688
8689 return err;
8690 }
8691
8692 static struct sk_buff *
8693 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8694 struct wireless_dev *wdev, int approxlen,
8695 u32 portid, u32 seq, enum nl80211_commands cmd,
8696 enum nl80211_attrs attr,
8697 const struct nl80211_vendor_cmd_info *info,
8698 gfp_t gfp)
8699 {
8700 struct sk_buff *skb;
8701 void *hdr;
8702 struct nlattr *data;
8703
8704 skb = nlmsg_new(approxlen + 100, gfp);
8705 if (!skb)
8706 return NULL;
8707
8708 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8709 if (!hdr) {
8710 kfree_skb(skb);
8711 return NULL;
8712 }
8713
8714 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8715 goto nla_put_failure;
8716
8717 if (info) {
8718 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8719 info->vendor_id))
8720 goto nla_put_failure;
8721 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8722 info->subcmd))
8723 goto nla_put_failure;
8724 }
8725
8726 if (wdev) {
8727 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8728 wdev_id(wdev), NL80211_ATTR_PAD))
8729 goto nla_put_failure;
8730 if (wdev->netdev &&
8731 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8732 wdev->netdev->ifindex))
8733 goto nla_put_failure;
8734 }
8735
8736 data = nla_nest_start(skb, attr);
8737 if (!data)
8738 goto nla_put_failure;
8739
8740 ((void **)skb->cb)[0] = rdev;
8741 ((void **)skb->cb)[1] = hdr;
8742 ((void **)skb->cb)[2] = data;
8743
8744 return skb;
8745
8746 nla_put_failure:
8747 kfree_skb(skb);
8748 return NULL;
8749 }
8750
8751 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8752 struct wireless_dev *wdev,
8753 enum nl80211_commands cmd,
8754 enum nl80211_attrs attr,
8755 int vendor_event_idx,
8756 int approxlen, gfp_t gfp)
8757 {
8758 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8759 const struct nl80211_vendor_cmd_info *info;
8760
8761 switch (cmd) {
8762 case NL80211_CMD_TESTMODE:
8763 if (WARN_ON(vendor_event_idx != -1))
8764 return NULL;
8765 info = NULL;
8766 break;
8767 case NL80211_CMD_VENDOR:
8768 if (WARN_ON(vendor_event_idx < 0 ||
8769 vendor_event_idx >= wiphy->n_vendor_events))
8770 return NULL;
8771 info = &wiphy->vendor_events[vendor_event_idx];
8772 break;
8773 default:
8774 WARN_ON(1);
8775 return NULL;
8776 }
8777
8778 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8779 cmd, attr, info, gfp);
8780 }
8781 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8782
8783 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8784 {
8785 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8786 void *hdr = ((void **)skb->cb)[1];
8787 struct nlattr *data = ((void **)skb->cb)[2];
8788 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8789
8790 /* clear CB data for netlink core to own from now on */
8791 memset(skb->cb, 0, sizeof(skb->cb));
8792
8793 nla_nest_end(skb, data);
8794 genlmsg_end(skb, hdr);
8795
8796 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8797 mcgrp = NL80211_MCGRP_VENDOR;
8798
8799 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8800 mcgrp, gfp);
8801 }
8802 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8803
8804 #ifdef CONFIG_NL80211_TESTMODE
8805 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8806 {
8807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8808 struct wireless_dev *wdev =
8809 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8810 int err;
8811
8812 if (!rdev->ops->testmode_cmd)
8813 return -EOPNOTSUPP;
8814
8815 if (IS_ERR(wdev)) {
8816 err = PTR_ERR(wdev);
8817 if (err != -EINVAL)
8818 return err;
8819 wdev = NULL;
8820 } else if (wdev->wiphy != &rdev->wiphy) {
8821 return -EINVAL;
8822 }
8823
8824 if (!info->attrs[NL80211_ATTR_TESTDATA])
8825 return -EINVAL;
8826
8827 rdev->cur_cmd_info = info;
8828 err = rdev_testmode_cmd(rdev, wdev,
8829 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8830 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8831 rdev->cur_cmd_info = NULL;
8832
8833 return err;
8834 }
8835
8836 static int nl80211_testmode_dump(struct sk_buff *skb,
8837 struct netlink_callback *cb)
8838 {
8839 struct cfg80211_registered_device *rdev;
8840 int err;
8841 long phy_idx;
8842 void *data = NULL;
8843 int data_len = 0;
8844
8845 rtnl_lock();
8846
8847 if (cb->args[0]) {
8848 /*
8849 * 0 is a valid index, but not valid for args[0],
8850 * so we need to offset by 1.
8851 */
8852 phy_idx = cb->args[0] - 1;
8853
8854 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8855 if (!rdev) {
8856 err = -ENOENT;
8857 goto out_err;
8858 }
8859 } else {
8860 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8861
8862 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8863 attrbuf, nl80211_fam.maxattr,
8864 nl80211_policy, NULL);
8865 if (err)
8866 goto out_err;
8867
8868 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8869 if (IS_ERR(rdev)) {
8870 err = PTR_ERR(rdev);
8871 goto out_err;
8872 }
8873 phy_idx = rdev->wiphy_idx;
8874
8875 if (attrbuf[NL80211_ATTR_TESTDATA])
8876 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8877 }
8878
8879 if (cb->args[1]) {
8880 data = nla_data((void *)cb->args[1]);
8881 data_len = nla_len((void *)cb->args[1]);
8882 }
8883
8884 if (!rdev->ops->testmode_dump) {
8885 err = -EOPNOTSUPP;
8886 goto out_err;
8887 }
8888
8889 while (1) {
8890 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8891 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8892 NL80211_CMD_TESTMODE);
8893 struct nlattr *tmdata;
8894
8895 if (!hdr)
8896 break;
8897
8898 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8899 genlmsg_cancel(skb, hdr);
8900 break;
8901 }
8902
8903 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8904 if (!tmdata) {
8905 genlmsg_cancel(skb, hdr);
8906 break;
8907 }
8908 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8909 nla_nest_end(skb, tmdata);
8910
8911 if (err == -ENOBUFS || err == -ENOENT) {
8912 genlmsg_cancel(skb, hdr);
8913 break;
8914 } else if (err) {
8915 genlmsg_cancel(skb, hdr);
8916 goto out_err;
8917 }
8918
8919 genlmsg_end(skb, hdr);
8920 }
8921
8922 err = skb->len;
8923 /* see above */
8924 cb->args[0] = phy_idx + 1;
8925 out_err:
8926 rtnl_unlock();
8927 return err;
8928 }
8929 #endif
8930
8931 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8932 {
8933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8934 struct net_device *dev = info->user_ptr[1];
8935 struct cfg80211_connect_params connect;
8936 struct wiphy *wiphy;
8937 struct cfg80211_cached_keys *connkeys = NULL;
8938 int err;
8939
8940 memset(&connect, 0, sizeof(connect));
8941
8942 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8943 return -EINVAL;
8944
8945 if (!info->attrs[NL80211_ATTR_SSID] ||
8946 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8947 return -EINVAL;
8948
8949 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8950 connect.auth_type =
8951 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8952 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8953 NL80211_CMD_CONNECT))
8954 return -EINVAL;
8955 } else
8956 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8957
8958 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8959
8960 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8961 !wiphy_ext_feature_isset(&rdev->wiphy,
8962 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8963 return -EINVAL;
8964 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8965
8966 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8967 NL80211_MAX_NR_CIPHER_SUITES);
8968 if (err)
8969 return err;
8970
8971 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8972 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8973 return -EOPNOTSUPP;
8974
8975 wiphy = &rdev->wiphy;
8976
8977 connect.bg_scan_period = -1;
8978 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8979 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8980 connect.bg_scan_period =
8981 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8982 }
8983
8984 if (info->attrs[NL80211_ATTR_MAC])
8985 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8986 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8987 connect.bssid_hint =
8988 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8989 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8990 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8991
8992 if (info->attrs[NL80211_ATTR_IE]) {
8993 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8994 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8995 }
8996
8997 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8998 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8999 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9000 !wiphy_ext_feature_isset(&rdev->wiphy,
9001 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9002 return -EOPNOTSUPP;
9003
9004 if (connect.mfp != NL80211_MFP_REQUIRED &&
9005 connect.mfp != NL80211_MFP_NO &&
9006 connect.mfp != NL80211_MFP_OPTIONAL)
9007 return -EINVAL;
9008 } else {
9009 connect.mfp = NL80211_MFP_NO;
9010 }
9011
9012 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9013 connect.prev_bssid =
9014 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9015
9016 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9017 connect.channel = nl80211_get_valid_chan(
9018 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9019 if (!connect.channel)
9020 return -EINVAL;
9021 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9022 connect.channel_hint = nl80211_get_valid_chan(
9023 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9024 if (!connect.channel_hint)
9025 return -EINVAL;
9026 }
9027
9028 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9029 connkeys = nl80211_parse_connkeys(rdev,
9030 info->attrs[NL80211_ATTR_KEYS], NULL);
9031 if (IS_ERR(connkeys))
9032 return PTR_ERR(connkeys);
9033 }
9034
9035 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9036 connect.flags |= ASSOC_REQ_DISABLE_HT;
9037
9038 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9039 memcpy(&connect.ht_capa_mask,
9040 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9041 sizeof(connect.ht_capa_mask));
9042
9043 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9044 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9045 kzfree(connkeys);
9046 return -EINVAL;
9047 }
9048 memcpy(&connect.ht_capa,
9049 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9050 sizeof(connect.ht_capa));
9051 }
9052
9053 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9054 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9055
9056 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9057 memcpy(&connect.vht_capa_mask,
9058 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9059 sizeof(connect.vht_capa_mask));
9060
9061 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9062 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9063 kzfree(connkeys);
9064 return -EINVAL;
9065 }
9066 memcpy(&connect.vht_capa,
9067 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9068 sizeof(connect.vht_capa));
9069 }
9070
9071 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9072 if (!((rdev->wiphy.features &
9073 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9074 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9075 !wiphy_ext_feature_isset(&rdev->wiphy,
9076 NL80211_EXT_FEATURE_RRM)) {
9077 kzfree(connkeys);
9078 return -EINVAL;
9079 }
9080 connect.flags |= ASSOC_REQ_USE_RRM;
9081 }
9082
9083 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9084 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9085 kzfree(connkeys);
9086 return -EOPNOTSUPP;
9087 }
9088
9089 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9090 /* bss selection makes no sense if bssid is set */
9091 if (connect.bssid) {
9092 kzfree(connkeys);
9093 return -EINVAL;
9094 }
9095
9096 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9097 wiphy, &connect.bss_select);
9098 if (err) {
9099 kzfree(connkeys);
9100 return err;
9101 }
9102 }
9103
9104 if (wiphy_ext_feature_isset(&rdev->wiphy,
9105 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9106 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9107 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9108 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9109 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9110 connect.fils_erp_username =
9111 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9112 connect.fils_erp_username_len =
9113 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9114 connect.fils_erp_realm =
9115 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9116 connect.fils_erp_realm_len =
9117 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9118 connect.fils_erp_next_seq_num =
9119 nla_get_u16(
9120 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9121 connect.fils_erp_rrk =
9122 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9123 connect.fils_erp_rrk_len =
9124 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9125 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9126 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9127 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9128 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9129 kzfree(connkeys);
9130 return -EINVAL;
9131 }
9132
9133 wdev_lock(dev->ieee80211_ptr);
9134
9135 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9136 connect.prev_bssid);
9137 if (err)
9138 kzfree(connkeys);
9139
9140 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9141 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9142 if (connect.bssid)
9143 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9144 connect.bssid, ETH_ALEN);
9145 else
9146 memset(dev->ieee80211_ptr->disconnect_bssid,
9147 0, ETH_ALEN);
9148 }
9149
9150 wdev_unlock(dev->ieee80211_ptr);
9151
9152 return err;
9153 }
9154
9155 static int nl80211_update_connect_params(struct sk_buff *skb,
9156 struct genl_info *info)
9157 {
9158 struct cfg80211_connect_params connect = {};
9159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9160 struct net_device *dev = info->user_ptr[1];
9161 struct wireless_dev *wdev = dev->ieee80211_ptr;
9162 u32 changed = 0;
9163 int ret;
9164
9165 if (!rdev->ops->update_connect_params)
9166 return -EOPNOTSUPP;
9167
9168 if (info->attrs[NL80211_ATTR_IE]) {
9169 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9170 return -EINVAL;
9171 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9172 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9173 changed |= UPDATE_ASSOC_IES;
9174 }
9175
9176 wdev_lock(dev->ieee80211_ptr);
9177 if (!wdev->current_bss)
9178 ret = -ENOLINK;
9179 else
9180 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9181 wdev_unlock(dev->ieee80211_ptr);
9182
9183 return ret;
9184 }
9185
9186 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9187 {
9188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9189 struct net_device *dev = info->user_ptr[1];
9190 u16 reason;
9191 int ret;
9192
9193 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9194 reason = WLAN_REASON_DEAUTH_LEAVING;
9195 else
9196 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9197
9198 if (reason == 0)
9199 return -EINVAL;
9200
9201 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9202 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9203 return -EOPNOTSUPP;
9204
9205 wdev_lock(dev->ieee80211_ptr);
9206 ret = cfg80211_disconnect(rdev, dev, reason, true);
9207 wdev_unlock(dev->ieee80211_ptr);
9208 return ret;
9209 }
9210
9211 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9212 {
9213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9214 struct net *net;
9215 int err;
9216
9217 if (info->attrs[NL80211_ATTR_PID]) {
9218 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9219
9220 net = get_net_ns_by_pid(pid);
9221 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9222 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9223
9224 net = get_net_ns_by_fd(fd);
9225 } else {
9226 return -EINVAL;
9227 }
9228
9229 if (IS_ERR(net))
9230 return PTR_ERR(net);
9231
9232 err = 0;
9233
9234 /* check if anything to do */
9235 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9236 err = cfg80211_switch_netns(rdev, net);
9237
9238 put_net(net);
9239 return err;
9240 }
9241
9242 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9243 {
9244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9245 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9246 struct cfg80211_pmksa *pmksa) = NULL;
9247 struct net_device *dev = info->user_ptr[1];
9248 struct cfg80211_pmksa pmksa;
9249
9250 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9251
9252 if (!info->attrs[NL80211_ATTR_PMKID])
9253 return -EINVAL;
9254
9255 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9256
9257 if (info->attrs[NL80211_ATTR_MAC]) {
9258 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9259 } else if (info->attrs[NL80211_ATTR_SSID] &&
9260 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9261 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9262 info->attrs[NL80211_ATTR_PMK])) {
9263 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9264 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9265 pmksa.cache_id =
9266 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9267 } else {
9268 return -EINVAL;
9269 }
9270 if (info->attrs[NL80211_ATTR_PMK]) {
9271 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9272 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9273 }
9274
9275 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9276 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9277 return -EOPNOTSUPP;
9278
9279 switch (info->genlhdr->cmd) {
9280 case NL80211_CMD_SET_PMKSA:
9281 rdev_ops = rdev->ops->set_pmksa;
9282 break;
9283 case NL80211_CMD_DEL_PMKSA:
9284 rdev_ops = rdev->ops->del_pmksa;
9285 break;
9286 default:
9287 WARN_ON(1);
9288 break;
9289 }
9290
9291 if (!rdev_ops)
9292 return -EOPNOTSUPP;
9293
9294 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9295 }
9296
9297 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9298 {
9299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9300 struct net_device *dev = info->user_ptr[1];
9301
9302 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9303 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9304 return -EOPNOTSUPP;
9305
9306 if (!rdev->ops->flush_pmksa)
9307 return -EOPNOTSUPP;
9308
9309 return rdev_flush_pmksa(rdev, dev);
9310 }
9311
9312 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9313 {
9314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9315 struct net_device *dev = info->user_ptr[1];
9316 u8 action_code, dialog_token;
9317 u32 peer_capability = 0;
9318 u16 status_code;
9319 u8 *peer;
9320 bool initiator;
9321
9322 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9323 !rdev->ops->tdls_mgmt)
9324 return -EOPNOTSUPP;
9325
9326 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9327 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9328 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9329 !info->attrs[NL80211_ATTR_IE] ||
9330 !info->attrs[NL80211_ATTR_MAC])
9331 return -EINVAL;
9332
9333 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9334 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9335 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9336 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9337 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9338 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9339 peer_capability =
9340 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9341
9342 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9343 dialog_token, status_code, peer_capability,
9344 initiator,
9345 nla_data(info->attrs[NL80211_ATTR_IE]),
9346 nla_len(info->attrs[NL80211_ATTR_IE]));
9347 }
9348
9349 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9350 {
9351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9352 struct net_device *dev = info->user_ptr[1];
9353 enum nl80211_tdls_operation operation;
9354 u8 *peer;
9355
9356 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9357 !rdev->ops->tdls_oper)
9358 return -EOPNOTSUPP;
9359
9360 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9361 !info->attrs[NL80211_ATTR_MAC])
9362 return -EINVAL;
9363
9364 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9365 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9366
9367 return rdev_tdls_oper(rdev, dev, peer, operation);
9368 }
9369
9370 static int nl80211_remain_on_channel(struct sk_buff *skb,
9371 struct genl_info *info)
9372 {
9373 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9374 struct wireless_dev *wdev = info->user_ptr[1];
9375 struct cfg80211_chan_def chandef;
9376 const struct cfg80211_chan_def *compat_chandef;
9377 struct sk_buff *msg;
9378 void *hdr;
9379 u64 cookie;
9380 u32 duration;
9381 int err;
9382
9383 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9384 !info->attrs[NL80211_ATTR_DURATION])
9385 return -EINVAL;
9386
9387 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9388
9389 if (!rdev->ops->remain_on_channel ||
9390 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9391 return -EOPNOTSUPP;
9392
9393 /*
9394 * We should be on that channel for at least a minimum amount of
9395 * time (10ms) but no longer than the driver supports.
9396 */
9397 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9398 duration > rdev->wiphy.max_remain_on_channel_duration)
9399 return -EINVAL;
9400
9401 err = nl80211_parse_chandef(rdev, info, &chandef);
9402 if (err)
9403 return err;
9404
9405 wdev_lock(wdev);
9406 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9407 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9408 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9409 &chandef);
9410 if (compat_chandef != &chandef) {
9411 wdev_unlock(wdev);
9412 return -EBUSY;
9413 }
9414 }
9415 wdev_unlock(wdev);
9416
9417 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9418 if (!msg)
9419 return -ENOMEM;
9420
9421 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9422 NL80211_CMD_REMAIN_ON_CHANNEL);
9423 if (!hdr) {
9424 err = -ENOBUFS;
9425 goto free_msg;
9426 }
9427
9428 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9429 duration, &cookie);
9430
9431 if (err)
9432 goto free_msg;
9433
9434 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9435 NL80211_ATTR_PAD))
9436 goto nla_put_failure;
9437
9438 genlmsg_end(msg, hdr);
9439
9440 return genlmsg_reply(msg, info);
9441
9442 nla_put_failure:
9443 err = -ENOBUFS;
9444 free_msg:
9445 nlmsg_free(msg);
9446 return err;
9447 }
9448
9449 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9450 struct genl_info *info)
9451 {
9452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9453 struct wireless_dev *wdev = info->user_ptr[1];
9454 u64 cookie;
9455
9456 if (!info->attrs[NL80211_ATTR_COOKIE])
9457 return -EINVAL;
9458
9459 if (!rdev->ops->cancel_remain_on_channel)
9460 return -EOPNOTSUPP;
9461
9462 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9463
9464 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9465 }
9466
9467 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9468 struct genl_info *info)
9469 {
9470 struct cfg80211_bitrate_mask mask;
9471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9472 struct net_device *dev = info->user_ptr[1];
9473 int err;
9474
9475 if (!rdev->ops->set_bitrate_mask)
9476 return -EOPNOTSUPP;
9477
9478 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9479 if (err)
9480 return err;
9481
9482 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9483 }
9484
9485 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9486 {
9487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9488 struct wireless_dev *wdev = info->user_ptr[1];
9489 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9490
9491 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9492 return -EINVAL;
9493
9494 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9495 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9496
9497 switch (wdev->iftype) {
9498 case NL80211_IFTYPE_STATION:
9499 case NL80211_IFTYPE_ADHOC:
9500 case NL80211_IFTYPE_P2P_CLIENT:
9501 case NL80211_IFTYPE_AP:
9502 case NL80211_IFTYPE_AP_VLAN:
9503 case NL80211_IFTYPE_MESH_POINT:
9504 case NL80211_IFTYPE_P2P_GO:
9505 case NL80211_IFTYPE_P2P_DEVICE:
9506 break;
9507 case NL80211_IFTYPE_NAN:
9508 default:
9509 return -EOPNOTSUPP;
9510 }
9511
9512 /* not much point in registering if we can't reply */
9513 if (!rdev->ops->mgmt_tx)
9514 return -EOPNOTSUPP;
9515
9516 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9517 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9518 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9519 }
9520
9521 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9522 {
9523 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9524 struct wireless_dev *wdev = info->user_ptr[1];
9525 struct cfg80211_chan_def chandef;
9526 int err;
9527 void *hdr = NULL;
9528 u64 cookie;
9529 struct sk_buff *msg = NULL;
9530 struct cfg80211_mgmt_tx_params params = {
9531 .dont_wait_for_ack =
9532 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9533 };
9534
9535 if (!info->attrs[NL80211_ATTR_FRAME])
9536 return -EINVAL;
9537
9538 if (!rdev->ops->mgmt_tx)
9539 return -EOPNOTSUPP;
9540
9541 switch (wdev->iftype) {
9542 case NL80211_IFTYPE_P2P_DEVICE:
9543 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9544 return -EINVAL;
9545 case NL80211_IFTYPE_STATION:
9546 case NL80211_IFTYPE_ADHOC:
9547 case NL80211_IFTYPE_P2P_CLIENT:
9548 case NL80211_IFTYPE_AP:
9549 case NL80211_IFTYPE_AP_VLAN:
9550 case NL80211_IFTYPE_MESH_POINT:
9551 case NL80211_IFTYPE_P2P_GO:
9552 break;
9553 case NL80211_IFTYPE_NAN:
9554 default:
9555 return -EOPNOTSUPP;
9556 }
9557
9558 if (info->attrs[NL80211_ATTR_DURATION]) {
9559 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9560 return -EINVAL;
9561 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9562
9563 /*
9564 * We should wait on the channel for at least a minimum amount
9565 * of time (10ms) but no longer than the driver supports.
9566 */
9567 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9568 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9569 return -EINVAL;
9570 }
9571
9572 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9573
9574 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9575 return -EINVAL;
9576
9577 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9578
9579 /* get the channel if any has been specified, otherwise pass NULL to
9580 * the driver. The latter will use the current one
9581 */
9582 chandef.chan = NULL;
9583 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9584 err = nl80211_parse_chandef(rdev, info, &chandef);
9585 if (err)
9586 return err;
9587 }
9588
9589 if (!chandef.chan && params.offchan)
9590 return -EINVAL;
9591
9592 wdev_lock(wdev);
9593 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9594 wdev_unlock(wdev);
9595 return -EBUSY;
9596 }
9597 wdev_unlock(wdev);
9598
9599 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9600 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9601
9602 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9603 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9604 int i;
9605
9606 if (len % sizeof(u16))
9607 return -EINVAL;
9608
9609 params.n_csa_offsets = len / sizeof(u16);
9610 params.csa_offsets =
9611 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9612
9613 /* check that all the offsets fit the frame */
9614 for (i = 0; i < params.n_csa_offsets; i++) {
9615 if (params.csa_offsets[i] >= params.len)
9616 return -EINVAL;
9617 }
9618 }
9619
9620 if (!params.dont_wait_for_ack) {
9621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9622 if (!msg)
9623 return -ENOMEM;
9624
9625 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9626 NL80211_CMD_FRAME);
9627 if (!hdr) {
9628 err = -ENOBUFS;
9629 goto free_msg;
9630 }
9631 }
9632
9633 params.chan = chandef.chan;
9634 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9635 if (err)
9636 goto free_msg;
9637
9638 if (msg) {
9639 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9640 NL80211_ATTR_PAD))
9641 goto nla_put_failure;
9642
9643 genlmsg_end(msg, hdr);
9644 return genlmsg_reply(msg, info);
9645 }
9646
9647 return 0;
9648
9649 nla_put_failure:
9650 err = -ENOBUFS;
9651 free_msg:
9652 nlmsg_free(msg);
9653 return err;
9654 }
9655
9656 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9657 {
9658 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9659 struct wireless_dev *wdev = info->user_ptr[1];
9660 u64 cookie;
9661
9662 if (!info->attrs[NL80211_ATTR_COOKIE])
9663 return -EINVAL;
9664
9665 if (!rdev->ops->mgmt_tx_cancel_wait)
9666 return -EOPNOTSUPP;
9667
9668 switch (wdev->iftype) {
9669 case NL80211_IFTYPE_STATION:
9670 case NL80211_IFTYPE_ADHOC:
9671 case NL80211_IFTYPE_P2P_CLIENT:
9672 case NL80211_IFTYPE_AP:
9673 case NL80211_IFTYPE_AP_VLAN:
9674 case NL80211_IFTYPE_P2P_GO:
9675 case NL80211_IFTYPE_P2P_DEVICE:
9676 break;
9677 case NL80211_IFTYPE_NAN:
9678 default:
9679 return -EOPNOTSUPP;
9680 }
9681
9682 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9683
9684 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9685 }
9686
9687 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9688 {
9689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690 struct wireless_dev *wdev;
9691 struct net_device *dev = info->user_ptr[1];
9692 u8 ps_state;
9693 bool state;
9694 int err;
9695
9696 if (!info->attrs[NL80211_ATTR_PS_STATE])
9697 return -EINVAL;
9698
9699 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9700
9701 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9702 return -EINVAL;
9703
9704 wdev = dev->ieee80211_ptr;
9705
9706 if (!rdev->ops->set_power_mgmt)
9707 return -EOPNOTSUPP;
9708
9709 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9710
9711 if (state == wdev->ps)
9712 return 0;
9713
9714 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9715 if (!err)
9716 wdev->ps = state;
9717 return err;
9718 }
9719
9720 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9721 {
9722 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9723 enum nl80211_ps_state ps_state;
9724 struct wireless_dev *wdev;
9725 struct net_device *dev = info->user_ptr[1];
9726 struct sk_buff *msg;
9727 void *hdr;
9728 int err;
9729
9730 wdev = dev->ieee80211_ptr;
9731
9732 if (!rdev->ops->set_power_mgmt)
9733 return -EOPNOTSUPP;
9734
9735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9736 if (!msg)
9737 return -ENOMEM;
9738
9739 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9740 NL80211_CMD_GET_POWER_SAVE);
9741 if (!hdr) {
9742 err = -ENOBUFS;
9743 goto free_msg;
9744 }
9745
9746 if (wdev->ps)
9747 ps_state = NL80211_PS_ENABLED;
9748 else
9749 ps_state = NL80211_PS_DISABLED;
9750
9751 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9752 goto nla_put_failure;
9753
9754 genlmsg_end(msg, hdr);
9755 return genlmsg_reply(msg, info);
9756
9757 nla_put_failure:
9758 err = -ENOBUFS;
9759 free_msg:
9760 nlmsg_free(msg);
9761 return err;
9762 }
9763
9764 static const struct nla_policy
9765 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9766 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9767 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9768 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9769 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9770 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9771 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9772 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9773 };
9774
9775 static int nl80211_set_cqm_txe(struct genl_info *info,
9776 u32 rate, u32 pkts, u32 intvl)
9777 {
9778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9779 struct net_device *dev = info->user_ptr[1];
9780 struct wireless_dev *wdev = dev->ieee80211_ptr;
9781
9782 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9783 return -EINVAL;
9784
9785 if (!rdev->ops->set_cqm_txe_config)
9786 return -EOPNOTSUPP;
9787
9788 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9789 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9790 return -EOPNOTSUPP;
9791
9792 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9793 }
9794
9795 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9796 struct net_device *dev)
9797 {
9798 struct wireless_dev *wdev = dev->ieee80211_ptr;
9799 s32 last, low, high;
9800 u32 hyst;
9801 int i, n;
9802 int err;
9803
9804 /* RSSI reporting disabled? */
9805 if (!wdev->cqm_config)
9806 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9807
9808 /*
9809 * Obtain current RSSI value if possible, if not and no RSSI threshold
9810 * event has been received yet, we should receive an event after a
9811 * connection is established and enough beacons received to calculate
9812 * the average.
9813 */
9814 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9815 rdev->ops->get_station) {
9816 struct station_info sinfo = {};
9817 u8 *mac_addr;
9818
9819 mac_addr = wdev->current_bss->pub.bssid;
9820
9821 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9822 if (err)
9823 return err;
9824
9825 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9826 wdev->cqm_config->last_rssi_event_value =
9827 (s8) sinfo.rx_beacon_signal_avg;
9828 }
9829
9830 last = wdev->cqm_config->last_rssi_event_value;
9831 hyst = wdev->cqm_config->rssi_hyst;
9832 n = wdev->cqm_config->n_rssi_thresholds;
9833
9834 for (i = 0; i < n; i++)
9835 if (last < wdev->cqm_config->rssi_thresholds[i])
9836 break;
9837
9838 low = i > 0 ?
9839 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9840 high = i < n ?
9841 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9842
9843 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9844 }
9845
9846 static int nl80211_set_cqm_rssi(struct genl_info *info,
9847 const s32 *thresholds, int n_thresholds,
9848 u32 hysteresis)
9849 {
9850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9851 struct net_device *dev = info->user_ptr[1];
9852 struct wireless_dev *wdev = dev->ieee80211_ptr;
9853 int i, err;
9854 s32 prev = S32_MIN;
9855
9856 /* Check all values negative and sorted */
9857 for (i = 0; i < n_thresholds; i++) {
9858 if (thresholds[i] > 0 || thresholds[i] <= prev)
9859 return -EINVAL;
9860
9861 prev = thresholds[i];
9862 }
9863
9864 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9865 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9866 return -EOPNOTSUPP;
9867
9868 wdev_lock(wdev);
9869 cfg80211_cqm_config_free(wdev);
9870 wdev_unlock(wdev);
9871
9872 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9873 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9874 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9875
9876 return rdev_set_cqm_rssi_config(rdev, dev,
9877 thresholds[0], hysteresis);
9878 }
9879
9880 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9881 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9882 return -EOPNOTSUPP;
9883
9884 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9885 n_thresholds = 0;
9886
9887 wdev_lock(wdev);
9888 if (n_thresholds) {
9889 struct cfg80211_cqm_config *cqm_config;
9890
9891 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9892 n_thresholds * sizeof(s32), GFP_KERNEL);
9893 if (!cqm_config) {
9894 err = -ENOMEM;
9895 goto unlock;
9896 }
9897
9898 cqm_config->rssi_hyst = hysteresis;
9899 cqm_config->n_rssi_thresholds = n_thresholds;
9900 memcpy(cqm_config->rssi_thresholds, thresholds,
9901 n_thresholds * sizeof(s32));
9902
9903 wdev->cqm_config = cqm_config;
9904 }
9905
9906 err = cfg80211_cqm_rssi_update(rdev, dev);
9907
9908 unlock:
9909 wdev_unlock(wdev);
9910
9911 return err;
9912 }
9913
9914 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9915 {
9916 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9917 struct nlattr *cqm;
9918 int err;
9919
9920 cqm = info->attrs[NL80211_ATTR_CQM];
9921 if (!cqm)
9922 return -EINVAL;
9923
9924 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9925 nl80211_attr_cqm_policy, info->extack);
9926 if (err)
9927 return err;
9928
9929 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9930 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9931 const s32 *thresholds =
9932 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9933 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9934 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9935
9936 if (len % 4)
9937 return -EINVAL;
9938
9939 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9940 hysteresis);
9941 }
9942
9943 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9944 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9945 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9946 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9947 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9948 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9949
9950 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9951 }
9952
9953 return -EINVAL;
9954 }
9955
9956 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9957 {
9958 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9959 struct net_device *dev = info->user_ptr[1];
9960 struct ocb_setup setup = {};
9961 int err;
9962
9963 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9964 if (err)
9965 return err;
9966
9967 return cfg80211_join_ocb(rdev, dev, &setup);
9968 }
9969
9970 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9971 {
9972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9973 struct net_device *dev = info->user_ptr[1];
9974
9975 return cfg80211_leave_ocb(rdev, dev);
9976 }
9977
9978 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9979 {
9980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9981 struct net_device *dev = info->user_ptr[1];
9982 struct mesh_config cfg;
9983 struct mesh_setup setup;
9984 int err;
9985
9986 /* start with default */
9987 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9988 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9989
9990 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9991 /* and parse parameters if given */
9992 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9993 if (err)
9994 return err;
9995 }
9996
9997 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9998 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9999 return -EINVAL;
10000
10001 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10002 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10003
10004 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10005 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10006 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10007 return -EINVAL;
10008
10009 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10010 setup.beacon_interval =
10011 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10012
10013 err = cfg80211_validate_beacon_int(rdev,
10014 NL80211_IFTYPE_MESH_POINT,
10015 setup.beacon_interval);
10016 if (err)
10017 return err;
10018 }
10019
10020 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10021 setup.dtim_period =
10022 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10023 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10024 return -EINVAL;
10025 }
10026
10027 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10028 /* parse additional setup parameters if given */
10029 err = nl80211_parse_mesh_setup(info, &setup);
10030 if (err)
10031 return err;
10032 }
10033
10034 if (setup.user_mpm)
10035 cfg.auto_open_plinks = false;
10036
10037 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10038 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10039 if (err)
10040 return err;
10041 } else {
10042 /* cfg80211_join_mesh() will sort it out */
10043 setup.chandef.chan = NULL;
10044 }
10045
10046 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10047 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10048 int n_rates =
10049 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10050 struct ieee80211_supported_band *sband;
10051
10052 if (!setup.chandef.chan)
10053 return -EINVAL;
10054
10055 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10056
10057 err = ieee80211_get_ratemask(sband, rates, n_rates,
10058 &setup.basic_rates);
10059 if (err)
10060 return err;
10061 }
10062
10063 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10064 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10065 if (err)
10066 return err;
10067
10068 if (!setup.chandef.chan)
10069 return -EINVAL;
10070
10071 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10072 &setup.beacon_rate);
10073 if (err)
10074 return err;
10075 }
10076
10077 setup.userspace_handles_dfs =
10078 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10079
10080 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10081 }
10082
10083 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10084 {
10085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10086 struct net_device *dev = info->user_ptr[1];
10087
10088 return cfg80211_leave_mesh(rdev, dev);
10089 }
10090
10091 #ifdef CONFIG_PM
10092 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10093 struct cfg80211_registered_device *rdev)
10094 {
10095 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10096 struct nlattr *nl_pats, *nl_pat;
10097 int i, pat_len;
10098
10099 if (!wowlan->n_patterns)
10100 return 0;
10101
10102 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10103 if (!nl_pats)
10104 return -ENOBUFS;
10105
10106 for (i = 0; i < wowlan->n_patterns; i++) {
10107 nl_pat = nla_nest_start(msg, i + 1);
10108 if (!nl_pat)
10109 return -ENOBUFS;
10110 pat_len = wowlan->patterns[i].pattern_len;
10111 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10112 wowlan->patterns[i].mask) ||
10113 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10114 wowlan->patterns[i].pattern) ||
10115 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10116 wowlan->patterns[i].pkt_offset))
10117 return -ENOBUFS;
10118 nla_nest_end(msg, nl_pat);
10119 }
10120 nla_nest_end(msg, nl_pats);
10121
10122 return 0;
10123 }
10124
10125 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10126 struct cfg80211_wowlan_tcp *tcp)
10127 {
10128 struct nlattr *nl_tcp;
10129
10130 if (!tcp)
10131 return 0;
10132
10133 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10134 if (!nl_tcp)
10135 return -ENOBUFS;
10136
10137 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10138 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10139 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10140 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10141 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10142 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10143 tcp->payload_len, tcp->payload) ||
10144 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10145 tcp->data_interval) ||
10146 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10147 tcp->wake_len, tcp->wake_data) ||
10148 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10149 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10150 return -ENOBUFS;
10151
10152 if (tcp->payload_seq.len &&
10153 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10154 sizeof(tcp->payload_seq), &tcp->payload_seq))
10155 return -ENOBUFS;
10156
10157 if (tcp->payload_tok.len &&
10158 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10159 sizeof(tcp->payload_tok) + tcp->tokens_size,
10160 &tcp->payload_tok))
10161 return -ENOBUFS;
10162
10163 nla_nest_end(msg, nl_tcp);
10164
10165 return 0;
10166 }
10167
10168 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10169 struct cfg80211_sched_scan_request *req)
10170 {
10171 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10172 int i;
10173
10174 if (!req)
10175 return 0;
10176
10177 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10178 if (!nd)
10179 return -ENOBUFS;
10180
10181 if (req->n_scan_plans == 1 &&
10182 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10183 req->scan_plans[0].interval * 1000))
10184 return -ENOBUFS;
10185
10186 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10187 return -ENOBUFS;
10188
10189 if (req->relative_rssi_set) {
10190 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10191
10192 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10193 req->relative_rssi))
10194 return -ENOBUFS;
10195
10196 rssi_adjust.band = req->rssi_adjust.band;
10197 rssi_adjust.delta = req->rssi_adjust.delta;
10198 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10199 sizeof(rssi_adjust), &rssi_adjust))
10200 return -ENOBUFS;
10201 }
10202
10203 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10204 if (!freqs)
10205 return -ENOBUFS;
10206
10207 for (i = 0; i < req->n_channels; i++) {
10208 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10209 return -ENOBUFS;
10210 }
10211
10212 nla_nest_end(msg, freqs);
10213
10214 if (req->n_match_sets) {
10215 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10216 if (!matches)
10217 return -ENOBUFS;
10218
10219 for (i = 0; i < req->n_match_sets; i++) {
10220 match = nla_nest_start(msg, i);
10221 if (!match)
10222 return -ENOBUFS;
10223
10224 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10225 req->match_sets[i].ssid.ssid_len,
10226 req->match_sets[i].ssid.ssid))
10227 return -ENOBUFS;
10228 nla_nest_end(msg, match);
10229 }
10230 nla_nest_end(msg, matches);
10231 }
10232
10233 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10234 if (!scan_plans)
10235 return -ENOBUFS;
10236
10237 for (i = 0; i < req->n_scan_plans; i++) {
10238 scan_plan = nla_nest_start(msg, i + 1);
10239 if (!scan_plan)
10240 return -ENOBUFS;
10241
10242 if (!scan_plan ||
10243 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10244 req->scan_plans[i].interval) ||
10245 (req->scan_plans[i].iterations &&
10246 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10247 req->scan_plans[i].iterations)))
10248 return -ENOBUFS;
10249 nla_nest_end(msg, scan_plan);
10250 }
10251 nla_nest_end(msg, scan_plans);
10252
10253 nla_nest_end(msg, nd);
10254
10255 return 0;
10256 }
10257
10258 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10259 {
10260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10261 struct sk_buff *msg;
10262 void *hdr;
10263 u32 size = NLMSG_DEFAULT_SIZE;
10264
10265 if (!rdev->wiphy.wowlan)
10266 return -EOPNOTSUPP;
10267
10268 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10269 /* adjust size to have room for all the data */
10270 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10271 rdev->wiphy.wowlan_config->tcp->payload_len +
10272 rdev->wiphy.wowlan_config->tcp->wake_len +
10273 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10274 }
10275
10276 msg = nlmsg_new(size, GFP_KERNEL);
10277 if (!msg)
10278 return -ENOMEM;
10279
10280 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10281 NL80211_CMD_GET_WOWLAN);
10282 if (!hdr)
10283 goto nla_put_failure;
10284
10285 if (rdev->wiphy.wowlan_config) {
10286 struct nlattr *nl_wowlan;
10287
10288 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10289 if (!nl_wowlan)
10290 goto nla_put_failure;
10291
10292 if ((rdev->wiphy.wowlan_config->any &&
10293 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10294 (rdev->wiphy.wowlan_config->disconnect &&
10295 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10296 (rdev->wiphy.wowlan_config->magic_pkt &&
10297 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10298 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10299 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10300 (rdev->wiphy.wowlan_config->eap_identity_req &&
10301 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10302 (rdev->wiphy.wowlan_config->four_way_handshake &&
10303 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10304 (rdev->wiphy.wowlan_config->rfkill_release &&
10305 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10306 goto nla_put_failure;
10307
10308 if (nl80211_send_wowlan_patterns(msg, rdev))
10309 goto nla_put_failure;
10310
10311 if (nl80211_send_wowlan_tcp(msg,
10312 rdev->wiphy.wowlan_config->tcp))
10313 goto nla_put_failure;
10314
10315 if (nl80211_send_wowlan_nd(
10316 msg,
10317 rdev->wiphy.wowlan_config->nd_config))
10318 goto nla_put_failure;
10319
10320 nla_nest_end(msg, nl_wowlan);
10321 }
10322
10323 genlmsg_end(msg, hdr);
10324 return genlmsg_reply(msg, info);
10325
10326 nla_put_failure:
10327 nlmsg_free(msg);
10328 return -ENOBUFS;
10329 }
10330
10331 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10332 struct nlattr *attr,
10333 struct cfg80211_wowlan *trig)
10334 {
10335 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10336 struct cfg80211_wowlan_tcp *cfg;
10337 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10338 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10339 u32 size;
10340 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10341 int err, port;
10342
10343 if (!rdev->wiphy.wowlan->tcp)
10344 return -EINVAL;
10345
10346 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10347 nl80211_wowlan_tcp_policy, NULL);
10348 if (err)
10349 return err;
10350
10351 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10352 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10353 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10354 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10355 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10356 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10357 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10358 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10359 return -EINVAL;
10360
10361 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10362 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10363 return -EINVAL;
10364
10365 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10366 rdev->wiphy.wowlan->tcp->data_interval_max ||
10367 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10368 return -EINVAL;
10369
10370 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10371 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10372 return -EINVAL;
10373
10374 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10375 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10376 return -EINVAL;
10377
10378 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10379 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10380
10381 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10382 tokens_size = tokln - sizeof(*tok);
10383
10384 if (!tok->len || tokens_size % tok->len)
10385 return -EINVAL;
10386 if (!rdev->wiphy.wowlan->tcp->tok)
10387 return -EINVAL;
10388 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10389 return -EINVAL;
10390 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10391 return -EINVAL;
10392 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10393 return -EINVAL;
10394 if (tok->offset + tok->len > data_size)
10395 return -EINVAL;
10396 }
10397
10398 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10399 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10400 if (!rdev->wiphy.wowlan->tcp->seq)
10401 return -EINVAL;
10402 if (seq->len == 0 || seq->len > 4)
10403 return -EINVAL;
10404 if (seq->len + seq->offset > data_size)
10405 return -EINVAL;
10406 }
10407
10408 size = sizeof(*cfg);
10409 size += data_size;
10410 size += wake_size + wake_mask_size;
10411 size += tokens_size;
10412
10413 cfg = kzalloc(size, GFP_KERNEL);
10414 if (!cfg)
10415 return -ENOMEM;
10416 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10417 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10418 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10419 ETH_ALEN);
10420 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10421 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10422 else
10423 port = 0;
10424 #ifdef CONFIG_INET
10425 /* allocate a socket and port for it and use it */
10426 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10427 IPPROTO_TCP, &cfg->sock, 1);
10428 if (err) {
10429 kfree(cfg);
10430 return err;
10431 }
10432 if (inet_csk_get_port(cfg->sock->sk, port)) {
10433 sock_release(cfg->sock);
10434 kfree(cfg);
10435 return -EADDRINUSE;
10436 }
10437 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10438 #else
10439 if (!port) {
10440 kfree(cfg);
10441 return -EINVAL;
10442 }
10443 cfg->src_port = port;
10444 #endif
10445
10446 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10447 cfg->payload_len = data_size;
10448 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10449 memcpy((void *)cfg->payload,
10450 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10451 data_size);
10452 if (seq)
10453 cfg->payload_seq = *seq;
10454 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10455 cfg->wake_len = wake_size;
10456 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10457 memcpy((void *)cfg->wake_data,
10458 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10459 wake_size);
10460 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10461 data_size + wake_size;
10462 memcpy((void *)cfg->wake_mask,
10463 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10464 wake_mask_size);
10465 if (tok) {
10466 cfg->tokens_size = tokens_size;
10467 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10468 }
10469
10470 trig->tcp = cfg;
10471
10472 return 0;
10473 }
10474
10475 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10476 const struct wiphy_wowlan_support *wowlan,
10477 struct nlattr *attr,
10478 struct cfg80211_wowlan *trig)
10479 {
10480 struct nlattr **tb;
10481 int err;
10482
10483 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10484 if (!tb)
10485 return -ENOMEM;
10486
10487 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10488 err = -EOPNOTSUPP;
10489 goto out;
10490 }
10491
10492 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10493 NULL);
10494 if (err)
10495 goto out;
10496
10497 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10498 wowlan->max_nd_match_sets);
10499 err = PTR_ERR_OR_ZERO(trig->nd_config);
10500 if (err)
10501 trig->nd_config = NULL;
10502
10503 out:
10504 kfree(tb);
10505 return err;
10506 }
10507
10508 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10509 {
10510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10511 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10512 struct cfg80211_wowlan new_triggers = {};
10513 struct cfg80211_wowlan *ntrig;
10514 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10515 int err, i;
10516 bool prev_enabled = rdev->wiphy.wowlan_config;
10517 bool regular = false;
10518
10519 if (!wowlan)
10520 return -EOPNOTSUPP;
10521
10522 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10523 cfg80211_rdev_free_wowlan(rdev);
10524 rdev->wiphy.wowlan_config = NULL;
10525 goto set_wakeup;
10526 }
10527
10528 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10529 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10530 nl80211_wowlan_policy, info->extack);
10531 if (err)
10532 return err;
10533
10534 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10535 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10536 return -EINVAL;
10537 new_triggers.any = true;
10538 }
10539
10540 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10541 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10542 return -EINVAL;
10543 new_triggers.disconnect = true;
10544 regular = true;
10545 }
10546
10547 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10548 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10549 return -EINVAL;
10550 new_triggers.magic_pkt = true;
10551 regular = true;
10552 }
10553
10554 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10555 return -EINVAL;
10556
10557 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10558 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10559 return -EINVAL;
10560 new_triggers.gtk_rekey_failure = true;
10561 regular = true;
10562 }
10563
10564 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10565 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10566 return -EINVAL;
10567 new_triggers.eap_identity_req = true;
10568 regular = true;
10569 }
10570
10571 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10572 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10573 return -EINVAL;
10574 new_triggers.four_way_handshake = true;
10575 regular = true;
10576 }
10577
10578 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10579 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10580 return -EINVAL;
10581 new_triggers.rfkill_release = true;
10582 regular = true;
10583 }
10584
10585 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10586 struct nlattr *pat;
10587 int n_patterns = 0;
10588 int rem, pat_len, mask_len, pkt_offset;
10589 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10590
10591 regular = true;
10592
10593 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10594 rem)
10595 n_patterns++;
10596 if (n_patterns > wowlan->n_patterns)
10597 return -EINVAL;
10598
10599 new_triggers.patterns = kcalloc(n_patterns,
10600 sizeof(new_triggers.patterns[0]),
10601 GFP_KERNEL);
10602 if (!new_triggers.patterns)
10603 return -ENOMEM;
10604
10605 new_triggers.n_patterns = n_patterns;
10606 i = 0;
10607
10608 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10609 rem) {
10610 u8 *mask_pat;
10611
10612 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10613 nl80211_packet_pattern_policy,
10614 info->extack);
10615 err = -EINVAL;
10616 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10617 !pat_tb[NL80211_PKTPAT_PATTERN])
10618 goto error;
10619 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10620 mask_len = DIV_ROUND_UP(pat_len, 8);
10621 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10622 goto error;
10623 if (pat_len > wowlan->pattern_max_len ||
10624 pat_len < wowlan->pattern_min_len)
10625 goto error;
10626
10627 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10628 pkt_offset = 0;
10629 else
10630 pkt_offset = nla_get_u32(
10631 pat_tb[NL80211_PKTPAT_OFFSET]);
10632 if (pkt_offset > wowlan->max_pkt_offset)
10633 goto error;
10634 new_triggers.patterns[i].pkt_offset = pkt_offset;
10635
10636 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10637 if (!mask_pat) {
10638 err = -ENOMEM;
10639 goto error;
10640 }
10641 new_triggers.patterns[i].mask = mask_pat;
10642 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10643 mask_len);
10644 mask_pat += mask_len;
10645 new_triggers.patterns[i].pattern = mask_pat;
10646 new_triggers.patterns[i].pattern_len = pat_len;
10647 memcpy(mask_pat,
10648 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10649 pat_len);
10650 i++;
10651 }
10652 }
10653
10654 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10655 regular = true;
10656 err = nl80211_parse_wowlan_tcp(
10657 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10658 &new_triggers);
10659 if (err)
10660 goto error;
10661 }
10662
10663 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10664 regular = true;
10665 err = nl80211_parse_wowlan_nd(
10666 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10667 &new_triggers);
10668 if (err)
10669 goto error;
10670 }
10671
10672 /* The 'any' trigger means the device continues operating more or less
10673 * as in its normal operation mode and wakes up the host on most of the
10674 * normal interrupts (like packet RX, ...)
10675 * It therefore makes little sense to combine with the more constrained
10676 * wakeup trigger modes.
10677 */
10678 if (new_triggers.any && regular) {
10679 err = -EINVAL;
10680 goto error;
10681 }
10682
10683 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10684 if (!ntrig) {
10685 err = -ENOMEM;
10686 goto error;
10687 }
10688 cfg80211_rdev_free_wowlan(rdev);
10689 rdev->wiphy.wowlan_config = ntrig;
10690
10691 set_wakeup:
10692 if (rdev->ops->set_wakeup &&
10693 prev_enabled != !!rdev->wiphy.wowlan_config)
10694 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10695
10696 return 0;
10697 error:
10698 for (i = 0; i < new_triggers.n_patterns; i++)
10699 kfree(new_triggers.patterns[i].mask);
10700 kfree(new_triggers.patterns);
10701 if (new_triggers.tcp && new_triggers.tcp->sock)
10702 sock_release(new_triggers.tcp->sock);
10703 kfree(new_triggers.tcp);
10704 kfree(new_triggers.nd_config);
10705 return err;
10706 }
10707 #endif
10708
10709 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10710 struct cfg80211_registered_device *rdev)
10711 {
10712 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10713 int i, j, pat_len;
10714 struct cfg80211_coalesce_rules *rule;
10715
10716 if (!rdev->coalesce->n_rules)
10717 return 0;
10718
10719 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10720 if (!nl_rules)
10721 return -ENOBUFS;
10722
10723 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10724 nl_rule = nla_nest_start(msg, i + 1);
10725 if (!nl_rule)
10726 return -ENOBUFS;
10727
10728 rule = &rdev->coalesce->rules[i];
10729 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10730 rule->delay))
10731 return -ENOBUFS;
10732
10733 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10734 rule->condition))
10735 return -ENOBUFS;
10736
10737 nl_pats = nla_nest_start(msg,
10738 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10739 if (!nl_pats)
10740 return -ENOBUFS;
10741
10742 for (j = 0; j < rule->n_patterns; j++) {
10743 nl_pat = nla_nest_start(msg, j + 1);
10744 if (!nl_pat)
10745 return -ENOBUFS;
10746 pat_len = rule->patterns[j].pattern_len;
10747 if (nla_put(msg, NL80211_PKTPAT_MASK,
10748 DIV_ROUND_UP(pat_len, 8),
10749 rule->patterns[j].mask) ||
10750 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10751 rule->patterns[j].pattern) ||
10752 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10753 rule->patterns[j].pkt_offset))
10754 return -ENOBUFS;
10755 nla_nest_end(msg, nl_pat);
10756 }
10757 nla_nest_end(msg, nl_pats);
10758 nla_nest_end(msg, nl_rule);
10759 }
10760 nla_nest_end(msg, nl_rules);
10761
10762 return 0;
10763 }
10764
10765 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10766 {
10767 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10768 struct sk_buff *msg;
10769 void *hdr;
10770
10771 if (!rdev->wiphy.coalesce)
10772 return -EOPNOTSUPP;
10773
10774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10775 if (!msg)
10776 return -ENOMEM;
10777
10778 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10779 NL80211_CMD_GET_COALESCE);
10780 if (!hdr)
10781 goto nla_put_failure;
10782
10783 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10784 goto nla_put_failure;
10785
10786 genlmsg_end(msg, hdr);
10787 return genlmsg_reply(msg, info);
10788
10789 nla_put_failure:
10790 nlmsg_free(msg);
10791 return -ENOBUFS;
10792 }
10793
10794 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10795 {
10796 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10797 int i, j;
10798 struct cfg80211_coalesce_rules *rule;
10799
10800 if (!coalesce)
10801 return;
10802
10803 for (i = 0; i < coalesce->n_rules; i++) {
10804 rule = &coalesce->rules[i];
10805 for (j = 0; j < rule->n_patterns; j++)
10806 kfree(rule->patterns[j].mask);
10807 kfree(rule->patterns);
10808 }
10809 kfree(coalesce->rules);
10810 kfree(coalesce);
10811 rdev->coalesce = NULL;
10812 }
10813
10814 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10815 struct nlattr *rule,
10816 struct cfg80211_coalesce_rules *new_rule)
10817 {
10818 int err, i;
10819 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10820 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10821 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10822 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10823
10824 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10825 nl80211_coalesce_policy, NULL);
10826 if (err)
10827 return err;
10828
10829 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10830 new_rule->delay =
10831 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10832 if (new_rule->delay > coalesce->max_delay)
10833 return -EINVAL;
10834
10835 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10836 new_rule->condition =
10837 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10838 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10839 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10840 return -EINVAL;
10841
10842 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10843 return -EINVAL;
10844
10845 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10846 rem)
10847 n_patterns++;
10848 if (n_patterns > coalesce->n_patterns)
10849 return -EINVAL;
10850
10851 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10852 GFP_KERNEL);
10853 if (!new_rule->patterns)
10854 return -ENOMEM;
10855
10856 new_rule->n_patterns = n_patterns;
10857 i = 0;
10858
10859 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10860 rem) {
10861 u8 *mask_pat;
10862
10863 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10864 nl80211_packet_pattern_policy, NULL);
10865 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10866 !pat_tb[NL80211_PKTPAT_PATTERN])
10867 return -EINVAL;
10868 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10869 mask_len = DIV_ROUND_UP(pat_len, 8);
10870 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10871 return -EINVAL;
10872 if (pat_len > coalesce->pattern_max_len ||
10873 pat_len < coalesce->pattern_min_len)
10874 return -EINVAL;
10875
10876 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10877 pkt_offset = 0;
10878 else
10879 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10880 if (pkt_offset > coalesce->max_pkt_offset)
10881 return -EINVAL;
10882 new_rule->patterns[i].pkt_offset = pkt_offset;
10883
10884 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10885 if (!mask_pat)
10886 return -ENOMEM;
10887
10888 new_rule->patterns[i].mask = mask_pat;
10889 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10890 mask_len);
10891
10892 mask_pat += mask_len;
10893 new_rule->patterns[i].pattern = mask_pat;
10894 new_rule->patterns[i].pattern_len = pat_len;
10895 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10896 pat_len);
10897 i++;
10898 }
10899
10900 return 0;
10901 }
10902
10903 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10904 {
10905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10906 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10907 struct cfg80211_coalesce new_coalesce = {};
10908 struct cfg80211_coalesce *n_coalesce;
10909 int err, rem_rule, n_rules = 0, i, j;
10910 struct nlattr *rule;
10911 struct cfg80211_coalesce_rules *tmp_rule;
10912
10913 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10914 return -EOPNOTSUPP;
10915
10916 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10917 cfg80211_rdev_free_coalesce(rdev);
10918 rdev_set_coalesce(rdev, NULL);
10919 return 0;
10920 }
10921
10922 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10923 rem_rule)
10924 n_rules++;
10925 if (n_rules > coalesce->n_rules)
10926 return -EINVAL;
10927
10928 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10929 GFP_KERNEL);
10930 if (!new_coalesce.rules)
10931 return -ENOMEM;
10932
10933 new_coalesce.n_rules = n_rules;
10934 i = 0;
10935
10936 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10937 rem_rule) {
10938 err = nl80211_parse_coalesce_rule(rdev, rule,
10939 &new_coalesce.rules[i]);
10940 if (err)
10941 goto error;
10942
10943 i++;
10944 }
10945
10946 err = rdev_set_coalesce(rdev, &new_coalesce);
10947 if (err)
10948 goto error;
10949
10950 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10951 if (!n_coalesce) {
10952 err = -ENOMEM;
10953 goto error;
10954 }
10955 cfg80211_rdev_free_coalesce(rdev);
10956 rdev->coalesce = n_coalesce;
10957
10958 return 0;
10959 error:
10960 for (i = 0; i < new_coalesce.n_rules; i++) {
10961 tmp_rule = &new_coalesce.rules[i];
10962 for (j = 0; j < tmp_rule->n_patterns; j++)
10963 kfree(tmp_rule->patterns[j].mask);
10964 kfree(tmp_rule->patterns);
10965 }
10966 kfree(new_coalesce.rules);
10967
10968 return err;
10969 }
10970
10971 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10972 {
10973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10974 struct net_device *dev = info->user_ptr[1];
10975 struct wireless_dev *wdev = dev->ieee80211_ptr;
10976 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10977 struct cfg80211_gtk_rekey_data rekey_data;
10978 int err;
10979
10980 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10981 return -EINVAL;
10982
10983 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10984 info->attrs[NL80211_ATTR_REKEY_DATA],
10985 nl80211_rekey_policy, info->extack);
10986 if (err)
10987 return err;
10988
10989 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10990 !tb[NL80211_REKEY_DATA_KCK])
10991 return -EINVAL;
10992 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10993 return -ERANGE;
10994 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10995 return -ERANGE;
10996 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10997 return -ERANGE;
10998
10999 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11000 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11001 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11002
11003 wdev_lock(wdev);
11004 if (!wdev->current_bss) {
11005 err = -ENOTCONN;
11006 goto out;
11007 }
11008
11009 if (!rdev->ops->set_rekey_data) {
11010 err = -EOPNOTSUPP;
11011 goto out;
11012 }
11013
11014 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11015 out:
11016 wdev_unlock(wdev);
11017 return err;
11018 }
11019
11020 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11021 struct genl_info *info)
11022 {
11023 struct net_device *dev = info->user_ptr[1];
11024 struct wireless_dev *wdev = dev->ieee80211_ptr;
11025
11026 if (wdev->iftype != NL80211_IFTYPE_AP &&
11027 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11028 return -EINVAL;
11029
11030 if (wdev->ap_unexpected_nlportid)
11031 return -EBUSY;
11032
11033 wdev->ap_unexpected_nlportid = info->snd_portid;
11034 return 0;
11035 }
11036
11037 static int nl80211_probe_client(struct sk_buff *skb,
11038 struct genl_info *info)
11039 {
11040 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11041 struct net_device *dev = info->user_ptr[1];
11042 struct wireless_dev *wdev = dev->ieee80211_ptr;
11043 struct sk_buff *msg;
11044 void *hdr;
11045 const u8 *addr;
11046 u64 cookie;
11047 int err;
11048
11049 if (wdev->iftype != NL80211_IFTYPE_AP &&
11050 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11051 return -EOPNOTSUPP;
11052
11053 if (!info->attrs[NL80211_ATTR_MAC])
11054 return -EINVAL;
11055
11056 if (!rdev->ops->probe_client)
11057 return -EOPNOTSUPP;
11058
11059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11060 if (!msg)
11061 return -ENOMEM;
11062
11063 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11064 NL80211_CMD_PROBE_CLIENT);
11065 if (!hdr) {
11066 err = -ENOBUFS;
11067 goto free_msg;
11068 }
11069
11070 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11071
11072 err = rdev_probe_client(rdev, dev, addr, &cookie);
11073 if (err)
11074 goto free_msg;
11075
11076 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11077 NL80211_ATTR_PAD))
11078 goto nla_put_failure;
11079
11080 genlmsg_end(msg, hdr);
11081
11082 return genlmsg_reply(msg, info);
11083
11084 nla_put_failure:
11085 err = -ENOBUFS;
11086 free_msg:
11087 nlmsg_free(msg);
11088 return err;
11089 }
11090
11091 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11092 {
11093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11094 struct cfg80211_beacon_registration *reg, *nreg;
11095 int rv;
11096
11097 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11098 return -EOPNOTSUPP;
11099
11100 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11101 if (!nreg)
11102 return -ENOMEM;
11103
11104 /* First, check if already registered. */
11105 spin_lock_bh(&rdev->beacon_registrations_lock);
11106 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11107 if (reg->nlportid == info->snd_portid) {
11108 rv = -EALREADY;
11109 goto out_err;
11110 }
11111 }
11112 /* Add it to the list */
11113 nreg->nlportid = info->snd_portid;
11114 list_add(&nreg->list, &rdev->beacon_registrations);
11115
11116 spin_unlock_bh(&rdev->beacon_registrations_lock);
11117
11118 return 0;
11119 out_err:
11120 spin_unlock_bh(&rdev->beacon_registrations_lock);
11121 kfree(nreg);
11122 return rv;
11123 }
11124
11125 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11126 {
11127 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11128 struct wireless_dev *wdev = info->user_ptr[1];
11129 int err;
11130
11131 if (!rdev->ops->start_p2p_device)
11132 return -EOPNOTSUPP;
11133
11134 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11135 return -EOPNOTSUPP;
11136
11137 if (wdev_running(wdev))
11138 return 0;
11139
11140 if (rfkill_blocked(rdev->rfkill))
11141 return -ERFKILL;
11142
11143 err = rdev_start_p2p_device(rdev, wdev);
11144 if (err)
11145 return err;
11146
11147 wdev->is_running = true;
11148 rdev->opencount++;
11149
11150 return 0;
11151 }
11152
11153 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11154 {
11155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11156 struct wireless_dev *wdev = info->user_ptr[1];
11157
11158 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11159 return -EOPNOTSUPP;
11160
11161 if (!rdev->ops->stop_p2p_device)
11162 return -EOPNOTSUPP;
11163
11164 cfg80211_stop_p2p_device(rdev, wdev);
11165
11166 return 0;
11167 }
11168
11169 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11170 {
11171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11172 struct wireless_dev *wdev = info->user_ptr[1];
11173 struct cfg80211_nan_conf conf = {};
11174 int err;
11175
11176 if (wdev->iftype != NL80211_IFTYPE_NAN)
11177 return -EOPNOTSUPP;
11178
11179 if (wdev_running(wdev))
11180 return -EEXIST;
11181
11182 if (rfkill_blocked(rdev->rfkill))
11183 return -ERFKILL;
11184
11185 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11186 return -EINVAL;
11187
11188 conf.master_pref =
11189 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11190 if (!conf.master_pref)
11191 return -EINVAL;
11192
11193 if (info->attrs[NL80211_ATTR_BANDS]) {
11194 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11195
11196 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11197 return -EOPNOTSUPP;
11198
11199 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11200 return -EINVAL;
11201
11202 conf.bands = bands;
11203 }
11204
11205 err = rdev_start_nan(rdev, wdev, &conf);
11206 if (err)
11207 return err;
11208
11209 wdev->is_running = true;
11210 rdev->opencount++;
11211
11212 return 0;
11213 }
11214
11215 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11216 {
11217 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11218 struct wireless_dev *wdev = info->user_ptr[1];
11219
11220 if (wdev->iftype != NL80211_IFTYPE_NAN)
11221 return -EOPNOTSUPP;
11222
11223 cfg80211_stop_nan(rdev, wdev);
11224
11225 return 0;
11226 }
11227
11228 static int validate_nan_filter(struct nlattr *filter_attr)
11229 {
11230 struct nlattr *attr;
11231 int len = 0, n_entries = 0, rem;
11232
11233 nla_for_each_nested(attr, filter_attr, rem) {
11234 len += nla_len(attr);
11235 n_entries++;
11236 }
11237
11238 if (len >= U8_MAX)
11239 return -EINVAL;
11240
11241 return n_entries;
11242 }
11243
11244 static int handle_nan_filter(struct nlattr *attr_filter,
11245 struct cfg80211_nan_func *func,
11246 bool tx)
11247 {
11248 struct nlattr *attr;
11249 int n_entries, rem, i;
11250 struct cfg80211_nan_func_filter *filter;
11251
11252 n_entries = validate_nan_filter(attr_filter);
11253 if (n_entries < 0)
11254 return n_entries;
11255
11256 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11257
11258 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11259 if (!filter)
11260 return -ENOMEM;
11261
11262 i = 0;
11263 nla_for_each_nested(attr, attr_filter, rem) {
11264 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11265 filter[i].len = nla_len(attr);
11266 i++;
11267 }
11268 if (tx) {
11269 func->num_tx_filters = n_entries;
11270 func->tx_filters = filter;
11271 } else {
11272 func->num_rx_filters = n_entries;
11273 func->rx_filters = filter;
11274 }
11275
11276 return 0;
11277 }
11278
11279 static int nl80211_nan_add_func(struct sk_buff *skb,
11280 struct genl_info *info)
11281 {
11282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11283 struct wireless_dev *wdev = info->user_ptr[1];
11284 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11285 struct cfg80211_nan_func *func;
11286 struct sk_buff *msg = NULL;
11287 void *hdr = NULL;
11288 int err = 0;
11289
11290 if (wdev->iftype != NL80211_IFTYPE_NAN)
11291 return -EOPNOTSUPP;
11292
11293 if (!wdev_running(wdev))
11294 return -ENOTCONN;
11295
11296 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11297 return -EINVAL;
11298
11299 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11300 info->attrs[NL80211_ATTR_NAN_FUNC],
11301 nl80211_nan_func_policy, info->extack);
11302 if (err)
11303 return err;
11304
11305 func = kzalloc(sizeof(*func), GFP_KERNEL);
11306 if (!func)
11307 return -ENOMEM;
11308
11309 func->cookie = wdev->wiphy->cookie_counter++;
11310
11311 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11312 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11313 err = -EINVAL;
11314 goto out;
11315 }
11316
11317
11318 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11319
11320 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11321 err = -EINVAL;
11322 goto out;
11323 }
11324
11325 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11326 sizeof(func->service_id));
11327
11328 func->close_range =
11329 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11330
11331 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11332 func->serv_spec_info_len =
11333 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11334 func->serv_spec_info =
11335 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11336 func->serv_spec_info_len,
11337 GFP_KERNEL);
11338 if (!func->serv_spec_info) {
11339 err = -ENOMEM;
11340 goto out;
11341 }
11342 }
11343
11344 if (tb[NL80211_NAN_FUNC_TTL])
11345 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11346
11347 switch (func->type) {
11348 case NL80211_NAN_FUNC_PUBLISH:
11349 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11350 err = -EINVAL;
11351 goto out;
11352 }
11353
11354 func->publish_type =
11355 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11356 func->publish_bcast =
11357 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11358
11359 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11360 func->publish_bcast) {
11361 err = -EINVAL;
11362 goto out;
11363 }
11364 break;
11365 case NL80211_NAN_FUNC_SUBSCRIBE:
11366 func->subscribe_active =
11367 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11368 break;
11369 case NL80211_NAN_FUNC_FOLLOW_UP:
11370 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11371 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11372 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11373 err = -EINVAL;
11374 goto out;
11375 }
11376
11377 func->followup_id =
11378 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11379 func->followup_reqid =
11380 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11381 memcpy(func->followup_dest.addr,
11382 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11383 sizeof(func->followup_dest.addr));
11384 if (func->ttl) {
11385 err = -EINVAL;
11386 goto out;
11387 }
11388 break;
11389 default:
11390 err = -EINVAL;
11391 goto out;
11392 }
11393
11394 if (tb[NL80211_NAN_FUNC_SRF]) {
11395 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11396
11397 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11398 tb[NL80211_NAN_FUNC_SRF],
11399 nl80211_nan_srf_policy, info->extack);
11400 if (err)
11401 goto out;
11402
11403 func->srf_include =
11404 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11405
11406 if (srf_tb[NL80211_NAN_SRF_BF]) {
11407 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11408 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11409 err = -EINVAL;
11410 goto out;
11411 }
11412
11413 func->srf_bf_len =
11414 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11415 func->srf_bf =
11416 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11417 func->srf_bf_len, GFP_KERNEL);
11418 if (!func->srf_bf) {
11419 err = -ENOMEM;
11420 goto out;
11421 }
11422
11423 func->srf_bf_idx =
11424 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11425 } else {
11426 struct nlattr *attr, *mac_attr =
11427 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11428 int n_entries, rem, i = 0;
11429
11430 if (!mac_attr) {
11431 err = -EINVAL;
11432 goto out;
11433 }
11434
11435 n_entries = validate_acl_mac_addrs(mac_attr);
11436 if (n_entries <= 0) {
11437 err = -EINVAL;
11438 goto out;
11439 }
11440
11441 func->srf_num_macs = n_entries;
11442 func->srf_macs =
11443 kzalloc(sizeof(*func->srf_macs) * n_entries,
11444 GFP_KERNEL);
11445 if (!func->srf_macs) {
11446 err = -ENOMEM;
11447 goto out;
11448 }
11449
11450 nla_for_each_nested(attr, mac_attr, rem)
11451 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11452 sizeof(*func->srf_macs));
11453 }
11454 }
11455
11456 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11457 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11458 func, true);
11459 if (err)
11460 goto out;
11461 }
11462
11463 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11464 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11465 func, false);
11466 if (err)
11467 goto out;
11468 }
11469
11470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11471 if (!msg) {
11472 err = -ENOMEM;
11473 goto out;
11474 }
11475
11476 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11477 NL80211_CMD_ADD_NAN_FUNCTION);
11478 /* This can't really happen - we just allocated 4KB */
11479 if (WARN_ON(!hdr)) {
11480 err = -ENOMEM;
11481 goto out;
11482 }
11483
11484 err = rdev_add_nan_func(rdev, wdev, func);
11485 out:
11486 if (err < 0) {
11487 cfg80211_free_nan_func(func);
11488 nlmsg_free(msg);
11489 return err;
11490 }
11491
11492 /* propagate the instance id and cookie to userspace */
11493 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11494 NL80211_ATTR_PAD))
11495 goto nla_put_failure;
11496
11497 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11498 if (!func_attr)
11499 goto nla_put_failure;
11500
11501 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11502 func->instance_id))
11503 goto nla_put_failure;
11504
11505 nla_nest_end(msg, func_attr);
11506
11507 genlmsg_end(msg, hdr);
11508 return genlmsg_reply(msg, info);
11509
11510 nla_put_failure:
11511 nlmsg_free(msg);
11512 return -ENOBUFS;
11513 }
11514
11515 static int nl80211_nan_del_func(struct sk_buff *skb,
11516 struct genl_info *info)
11517 {
11518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11519 struct wireless_dev *wdev = info->user_ptr[1];
11520 u64 cookie;
11521
11522 if (wdev->iftype != NL80211_IFTYPE_NAN)
11523 return -EOPNOTSUPP;
11524
11525 if (!wdev_running(wdev))
11526 return -ENOTCONN;
11527
11528 if (!info->attrs[NL80211_ATTR_COOKIE])
11529 return -EINVAL;
11530
11531 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11532
11533 rdev_del_nan_func(rdev, wdev, cookie);
11534
11535 return 0;
11536 }
11537
11538 static int nl80211_nan_change_config(struct sk_buff *skb,
11539 struct genl_info *info)
11540 {
11541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11542 struct wireless_dev *wdev = info->user_ptr[1];
11543 struct cfg80211_nan_conf conf = {};
11544 u32 changed = 0;
11545
11546 if (wdev->iftype != NL80211_IFTYPE_NAN)
11547 return -EOPNOTSUPP;
11548
11549 if (!wdev_running(wdev))
11550 return -ENOTCONN;
11551
11552 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11553 conf.master_pref =
11554 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11555 if (conf.master_pref <= 1 || conf.master_pref == 255)
11556 return -EINVAL;
11557
11558 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11559 }
11560
11561 if (info->attrs[NL80211_ATTR_BANDS]) {
11562 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11563
11564 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11565 return -EOPNOTSUPP;
11566
11567 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11568 return -EINVAL;
11569
11570 conf.bands = bands;
11571 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11572 }
11573
11574 if (!changed)
11575 return -EINVAL;
11576
11577 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11578 }
11579
11580 void cfg80211_nan_match(struct wireless_dev *wdev,
11581 struct cfg80211_nan_match_params *match, gfp_t gfp)
11582 {
11583 struct wiphy *wiphy = wdev->wiphy;
11584 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11585 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11586 struct sk_buff *msg;
11587 void *hdr;
11588
11589 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11590 return;
11591
11592 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11593 if (!msg)
11594 return;
11595
11596 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11597 if (!hdr) {
11598 nlmsg_free(msg);
11599 return;
11600 }
11601
11602 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11603 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11604 wdev->netdev->ifindex)) ||
11605 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11606 NL80211_ATTR_PAD))
11607 goto nla_put_failure;
11608
11609 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11610 NL80211_ATTR_PAD) ||
11611 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11612 goto nla_put_failure;
11613
11614 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11615 if (!match_attr)
11616 goto nla_put_failure;
11617
11618 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11619 if (!local_func_attr)
11620 goto nla_put_failure;
11621
11622 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11623 goto nla_put_failure;
11624
11625 nla_nest_end(msg, local_func_attr);
11626
11627 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11628 if (!peer_func_attr)
11629 goto nla_put_failure;
11630
11631 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11632 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11633 goto nla_put_failure;
11634
11635 if (match->info && match->info_len &&
11636 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11637 match->info))
11638 goto nla_put_failure;
11639
11640 nla_nest_end(msg, peer_func_attr);
11641 nla_nest_end(msg, match_attr);
11642 genlmsg_end(msg, hdr);
11643
11644 if (!wdev->owner_nlportid)
11645 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11646 msg, 0, NL80211_MCGRP_NAN, gfp);
11647 else
11648 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11649 wdev->owner_nlportid);
11650
11651 return;
11652
11653 nla_put_failure:
11654 nlmsg_free(msg);
11655 }
11656 EXPORT_SYMBOL(cfg80211_nan_match);
11657
11658 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11659 u8 inst_id,
11660 enum nl80211_nan_func_term_reason reason,
11661 u64 cookie, gfp_t gfp)
11662 {
11663 struct wiphy *wiphy = wdev->wiphy;
11664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11665 struct sk_buff *msg;
11666 struct nlattr *func_attr;
11667 void *hdr;
11668
11669 if (WARN_ON(!inst_id))
11670 return;
11671
11672 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11673 if (!msg)
11674 return;
11675
11676 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11677 if (!hdr) {
11678 nlmsg_free(msg);
11679 return;
11680 }
11681
11682 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11683 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11684 wdev->netdev->ifindex)) ||
11685 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11686 NL80211_ATTR_PAD))
11687 goto nla_put_failure;
11688
11689 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11690 NL80211_ATTR_PAD))
11691 goto nla_put_failure;
11692
11693 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11694 if (!func_attr)
11695 goto nla_put_failure;
11696
11697 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11698 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11699 goto nla_put_failure;
11700
11701 nla_nest_end(msg, func_attr);
11702 genlmsg_end(msg, hdr);
11703
11704 if (!wdev->owner_nlportid)
11705 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11706 msg, 0, NL80211_MCGRP_NAN, gfp);
11707 else
11708 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11709 wdev->owner_nlportid);
11710
11711 return;
11712
11713 nla_put_failure:
11714 nlmsg_free(msg);
11715 }
11716 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11717
11718 static int nl80211_get_protocol_features(struct sk_buff *skb,
11719 struct genl_info *info)
11720 {
11721 void *hdr;
11722 struct sk_buff *msg;
11723
11724 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11725 if (!msg)
11726 return -ENOMEM;
11727
11728 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11729 NL80211_CMD_GET_PROTOCOL_FEATURES);
11730 if (!hdr)
11731 goto nla_put_failure;
11732
11733 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11734 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11735 goto nla_put_failure;
11736
11737 genlmsg_end(msg, hdr);
11738 return genlmsg_reply(msg, info);
11739
11740 nla_put_failure:
11741 kfree_skb(msg);
11742 return -ENOBUFS;
11743 }
11744
11745 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11746 {
11747 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11748 struct cfg80211_update_ft_ies_params ft_params;
11749 struct net_device *dev = info->user_ptr[1];
11750
11751 if (!rdev->ops->update_ft_ies)
11752 return -EOPNOTSUPP;
11753
11754 if (!info->attrs[NL80211_ATTR_MDID] ||
11755 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11756 return -EINVAL;
11757
11758 memset(&ft_params, 0, sizeof(ft_params));
11759 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11760 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11761 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11762
11763 return rdev_update_ft_ies(rdev, dev, &ft_params);
11764 }
11765
11766 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11767 struct genl_info *info)
11768 {
11769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11770 struct wireless_dev *wdev = info->user_ptr[1];
11771 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11772 u16 duration;
11773 int ret;
11774
11775 if (!rdev->ops->crit_proto_start)
11776 return -EOPNOTSUPP;
11777
11778 if (WARN_ON(!rdev->ops->crit_proto_stop))
11779 return -EINVAL;
11780
11781 if (rdev->crit_proto_nlportid)
11782 return -EBUSY;
11783
11784 /* determine protocol if provided */
11785 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11786 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11787
11788 if (proto >= NUM_NL80211_CRIT_PROTO)
11789 return -EINVAL;
11790
11791 /* timeout must be provided */
11792 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11793 return -EINVAL;
11794
11795 duration =
11796 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11797
11798 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11799 return -ERANGE;
11800
11801 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11802 if (!ret)
11803 rdev->crit_proto_nlportid = info->snd_portid;
11804
11805 return ret;
11806 }
11807
11808 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11809 struct genl_info *info)
11810 {
11811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11812 struct wireless_dev *wdev = info->user_ptr[1];
11813
11814 if (!rdev->ops->crit_proto_stop)
11815 return -EOPNOTSUPP;
11816
11817 if (rdev->crit_proto_nlportid) {
11818 rdev->crit_proto_nlportid = 0;
11819 rdev_crit_proto_stop(rdev, wdev);
11820 }
11821 return 0;
11822 }
11823
11824 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11825 {
11826 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11827 struct wireless_dev *wdev =
11828 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11829 int i, err;
11830 u32 vid, subcmd;
11831
11832 if (!rdev->wiphy.vendor_commands)
11833 return -EOPNOTSUPP;
11834
11835 if (IS_ERR(wdev)) {
11836 err = PTR_ERR(wdev);
11837 if (err != -EINVAL)
11838 return err;
11839 wdev = NULL;
11840 } else if (wdev->wiphy != &rdev->wiphy) {
11841 return -EINVAL;
11842 }
11843
11844 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11845 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11846 return -EINVAL;
11847
11848 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11849 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11850 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11851 const struct wiphy_vendor_command *vcmd;
11852 void *data = NULL;
11853 int len = 0;
11854
11855 vcmd = &rdev->wiphy.vendor_commands[i];
11856
11857 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11858 continue;
11859
11860 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11861 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11862 if (!wdev)
11863 return -EINVAL;
11864 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11865 !wdev->netdev)
11866 return -EINVAL;
11867
11868 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11869 if (!wdev_running(wdev))
11870 return -ENETDOWN;
11871 }
11872
11873 if (!vcmd->doit)
11874 return -EOPNOTSUPP;
11875 } else {
11876 wdev = NULL;
11877 }
11878
11879 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11880 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11881 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11882 }
11883
11884 rdev->cur_cmd_info = info;
11885 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11886 data, len);
11887 rdev->cur_cmd_info = NULL;
11888 return err;
11889 }
11890
11891 return -EOPNOTSUPP;
11892 }
11893
11894 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11895 struct netlink_callback *cb,
11896 struct cfg80211_registered_device **rdev,
11897 struct wireless_dev **wdev)
11898 {
11899 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11900 u32 vid, subcmd;
11901 unsigned int i;
11902 int vcmd_idx = -1;
11903 int err;
11904 void *data = NULL;
11905 unsigned int data_len = 0;
11906
11907 if (cb->args[0]) {
11908 /* subtract the 1 again here */
11909 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11910 struct wireless_dev *tmp;
11911
11912 if (!wiphy)
11913 return -ENODEV;
11914 *rdev = wiphy_to_rdev(wiphy);
11915 *wdev = NULL;
11916
11917 if (cb->args[1]) {
11918 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11919 if (tmp->identifier == cb->args[1] - 1) {
11920 *wdev = tmp;
11921 break;
11922 }
11923 }
11924 }
11925
11926 /* keep rtnl locked in successful case */
11927 return 0;
11928 }
11929
11930 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11931 nl80211_fam.maxattr, nl80211_policy, NULL);
11932 if (err)
11933 return err;
11934
11935 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11936 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11937 return -EINVAL;
11938
11939 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11940 if (IS_ERR(*wdev))
11941 *wdev = NULL;
11942
11943 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11944 if (IS_ERR(*rdev))
11945 return PTR_ERR(*rdev);
11946
11947 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11948 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11949
11950 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11951 const struct wiphy_vendor_command *vcmd;
11952
11953 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11954
11955 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11956 continue;
11957
11958 if (!vcmd->dumpit)
11959 return -EOPNOTSUPP;
11960
11961 vcmd_idx = i;
11962 break;
11963 }
11964
11965 if (vcmd_idx < 0)
11966 return -EOPNOTSUPP;
11967
11968 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11969 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11970 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11971 }
11972
11973 /* 0 is the first index - add 1 to parse only once */
11974 cb->args[0] = (*rdev)->wiphy_idx + 1;
11975 /* add 1 to know if it was NULL */
11976 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11977 cb->args[2] = vcmd_idx;
11978 cb->args[3] = (unsigned long)data;
11979 cb->args[4] = data_len;
11980
11981 /* keep rtnl locked in successful case */
11982 return 0;
11983 }
11984
11985 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11986 struct netlink_callback *cb)
11987 {
11988 struct cfg80211_registered_device *rdev;
11989 struct wireless_dev *wdev;
11990 unsigned int vcmd_idx;
11991 const struct wiphy_vendor_command *vcmd;
11992 void *data;
11993 int data_len;
11994 int err;
11995 struct nlattr *vendor_data;
11996
11997 rtnl_lock();
11998 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11999 if (err)
12000 goto out;
12001
12002 vcmd_idx = cb->args[2];
12003 data = (void *)cb->args[3];
12004 data_len = cb->args[4];
12005 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12006
12007 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12008 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12009 if (!wdev) {
12010 err = -EINVAL;
12011 goto out;
12012 }
12013 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12014 !wdev->netdev) {
12015 err = -EINVAL;
12016 goto out;
12017 }
12018
12019 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12020 if (!wdev_running(wdev)) {
12021 err = -ENETDOWN;
12022 goto out;
12023 }
12024 }
12025 }
12026
12027 while (1) {
12028 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12029 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12030 NL80211_CMD_VENDOR);
12031 if (!hdr)
12032 break;
12033
12034 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12035 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12036 wdev_id(wdev),
12037 NL80211_ATTR_PAD))) {
12038 genlmsg_cancel(skb, hdr);
12039 break;
12040 }
12041
12042 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12043 if (!vendor_data) {
12044 genlmsg_cancel(skb, hdr);
12045 break;
12046 }
12047
12048 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12049 (unsigned long *)&cb->args[5]);
12050 nla_nest_end(skb, vendor_data);
12051
12052 if (err == -ENOBUFS || err == -ENOENT) {
12053 genlmsg_cancel(skb, hdr);
12054 break;
12055 } else if (err) {
12056 genlmsg_cancel(skb, hdr);
12057 goto out;
12058 }
12059
12060 genlmsg_end(skb, hdr);
12061 }
12062
12063 err = skb->len;
12064 out:
12065 rtnl_unlock();
12066 return err;
12067 }
12068
12069 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12070 enum nl80211_commands cmd,
12071 enum nl80211_attrs attr,
12072 int approxlen)
12073 {
12074 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12075
12076 if (WARN_ON(!rdev->cur_cmd_info))
12077 return NULL;
12078
12079 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12080 rdev->cur_cmd_info->snd_portid,
12081 rdev->cur_cmd_info->snd_seq,
12082 cmd, attr, NULL, GFP_KERNEL);
12083 }
12084 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12085
12086 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12087 {
12088 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12089 void *hdr = ((void **)skb->cb)[1];
12090 struct nlattr *data = ((void **)skb->cb)[2];
12091
12092 /* clear CB data for netlink core to own from now on */
12093 memset(skb->cb, 0, sizeof(skb->cb));
12094
12095 if (WARN_ON(!rdev->cur_cmd_info)) {
12096 kfree_skb(skb);
12097 return -EINVAL;
12098 }
12099
12100 nla_nest_end(skb, data);
12101 genlmsg_end(skb, hdr);
12102 return genlmsg_reply(skb, rdev->cur_cmd_info);
12103 }
12104 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12105
12106 static int nl80211_set_qos_map(struct sk_buff *skb,
12107 struct genl_info *info)
12108 {
12109 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12110 struct cfg80211_qos_map *qos_map = NULL;
12111 struct net_device *dev = info->user_ptr[1];
12112 u8 *pos, len, num_des, des_len, des;
12113 int ret;
12114
12115 if (!rdev->ops->set_qos_map)
12116 return -EOPNOTSUPP;
12117
12118 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12119 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12120 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12121
12122 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12123 len > IEEE80211_QOS_MAP_LEN_MAX)
12124 return -EINVAL;
12125
12126 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12127 if (!qos_map)
12128 return -ENOMEM;
12129
12130 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12131 if (num_des) {
12132 des_len = num_des *
12133 sizeof(struct cfg80211_dscp_exception);
12134 memcpy(qos_map->dscp_exception, pos, des_len);
12135 qos_map->num_des = num_des;
12136 for (des = 0; des < num_des; des++) {
12137 if (qos_map->dscp_exception[des].up > 7) {
12138 kfree(qos_map);
12139 return -EINVAL;
12140 }
12141 }
12142 pos += des_len;
12143 }
12144 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12145 }
12146
12147 wdev_lock(dev->ieee80211_ptr);
12148 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12149 if (!ret)
12150 ret = rdev_set_qos_map(rdev, dev, qos_map);
12151 wdev_unlock(dev->ieee80211_ptr);
12152
12153 kfree(qos_map);
12154 return ret;
12155 }
12156
12157 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12158 {
12159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12160 struct net_device *dev = info->user_ptr[1];
12161 struct wireless_dev *wdev = dev->ieee80211_ptr;
12162 const u8 *peer;
12163 u8 tsid, up;
12164 u16 admitted_time = 0;
12165 int err;
12166
12167 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12168 return -EOPNOTSUPP;
12169
12170 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12171 !info->attrs[NL80211_ATTR_USER_PRIO])
12172 return -EINVAL;
12173
12174 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12175 if (tsid >= IEEE80211_NUM_TIDS)
12176 return -EINVAL;
12177
12178 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12179 if (up >= IEEE80211_NUM_UPS)
12180 return -EINVAL;
12181
12182 /* WMM uses TIDs 0-7 even for TSPEC */
12183 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12184 /* TODO: handle 802.11 TSPEC/admission control
12185 * need more attributes for that (e.g. BA session requirement);
12186 * change the WMM adminssion test above to allow both then
12187 */
12188 return -EINVAL;
12189 }
12190
12191 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12192
12193 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12194 admitted_time =
12195 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12196 if (!admitted_time)
12197 return -EINVAL;
12198 }
12199
12200 wdev_lock(wdev);
12201 switch (wdev->iftype) {
12202 case NL80211_IFTYPE_STATION:
12203 case NL80211_IFTYPE_P2P_CLIENT:
12204 if (wdev->current_bss)
12205 break;
12206 err = -ENOTCONN;
12207 goto out;
12208 default:
12209 err = -EOPNOTSUPP;
12210 goto out;
12211 }
12212
12213 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12214
12215 out:
12216 wdev_unlock(wdev);
12217 return err;
12218 }
12219
12220 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12221 {
12222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12223 struct net_device *dev = info->user_ptr[1];
12224 struct wireless_dev *wdev = dev->ieee80211_ptr;
12225 const u8 *peer;
12226 u8 tsid;
12227 int err;
12228
12229 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12230 return -EINVAL;
12231
12232 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12233 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12234
12235 wdev_lock(wdev);
12236 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12237 wdev_unlock(wdev);
12238
12239 return err;
12240 }
12241
12242 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12243 struct genl_info *info)
12244 {
12245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12246 struct net_device *dev = info->user_ptr[1];
12247 struct wireless_dev *wdev = dev->ieee80211_ptr;
12248 struct cfg80211_chan_def chandef = {};
12249 const u8 *addr;
12250 u8 oper_class;
12251 int err;
12252
12253 if (!rdev->ops->tdls_channel_switch ||
12254 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12255 return -EOPNOTSUPP;
12256
12257 switch (dev->ieee80211_ptr->iftype) {
12258 case NL80211_IFTYPE_STATION:
12259 case NL80211_IFTYPE_P2P_CLIENT:
12260 break;
12261 default:
12262 return -EOPNOTSUPP;
12263 }
12264
12265 if (!info->attrs[NL80211_ATTR_MAC] ||
12266 !info->attrs[NL80211_ATTR_OPER_CLASS])
12267 return -EINVAL;
12268
12269 err = nl80211_parse_chandef(rdev, info, &chandef);
12270 if (err)
12271 return err;
12272
12273 /*
12274 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12275 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12276 * specification is not defined for them.
12277 */
12278 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12279 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12280 chandef.width != NL80211_CHAN_WIDTH_20)
12281 return -EINVAL;
12282
12283 /* we will be active on the TDLS link */
12284 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12285 wdev->iftype))
12286 return -EINVAL;
12287
12288 /* don't allow switching to DFS channels */
12289 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12290 return -EINVAL;
12291
12292 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12293 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12294
12295 wdev_lock(wdev);
12296 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12297 wdev_unlock(wdev);
12298
12299 return err;
12300 }
12301
12302 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12303 struct genl_info *info)
12304 {
12305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12306 struct net_device *dev = info->user_ptr[1];
12307 struct wireless_dev *wdev = dev->ieee80211_ptr;
12308 const u8 *addr;
12309
12310 if (!rdev->ops->tdls_channel_switch ||
12311 !rdev->ops->tdls_cancel_channel_switch ||
12312 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12313 return -EOPNOTSUPP;
12314
12315 switch (dev->ieee80211_ptr->iftype) {
12316 case NL80211_IFTYPE_STATION:
12317 case NL80211_IFTYPE_P2P_CLIENT:
12318 break;
12319 default:
12320 return -EOPNOTSUPP;
12321 }
12322
12323 if (!info->attrs[NL80211_ATTR_MAC])
12324 return -EINVAL;
12325
12326 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12327
12328 wdev_lock(wdev);
12329 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12330 wdev_unlock(wdev);
12331
12332 return 0;
12333 }
12334
12335 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12336 struct genl_info *info)
12337 {
12338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12339 struct net_device *dev = info->user_ptr[1];
12340 struct wireless_dev *wdev = dev->ieee80211_ptr;
12341 const struct nlattr *nla;
12342 bool enabled;
12343
12344 if (!rdev->ops->set_multicast_to_unicast)
12345 return -EOPNOTSUPP;
12346
12347 if (wdev->iftype != NL80211_IFTYPE_AP &&
12348 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12349 return -EOPNOTSUPP;
12350
12351 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12352 enabled = nla_get_flag(nla);
12353
12354 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12355 }
12356
12357 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12358 {
12359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12360 struct net_device *dev = info->user_ptr[1];
12361 struct wireless_dev *wdev = dev->ieee80211_ptr;
12362 struct cfg80211_pmk_conf pmk_conf = {};
12363 int ret;
12364
12365 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12366 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12367 return -EOPNOTSUPP;
12368
12369 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12370 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12371 return -EOPNOTSUPP;
12372
12373 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12374 return -EINVAL;
12375
12376 wdev_lock(wdev);
12377 if (!wdev->current_bss) {
12378 ret = -ENOTCONN;
12379 goto out;
12380 }
12381
12382 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12383 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12384 ret = -EINVAL;
12385 goto out;
12386 }
12387
12388 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12389 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12390 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12391 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12392 ret = -EINVAL;
12393 goto out;
12394 }
12395
12396 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12397 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12398
12399 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12400 ret = -EINVAL;
12401 goto out;
12402 }
12403
12404 pmk_conf.pmk_r0_name =
12405 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12406 }
12407
12408 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12409 out:
12410 wdev_unlock(wdev);
12411 return ret;
12412 }
12413
12414 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12415 {
12416 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12417 struct net_device *dev = info->user_ptr[1];
12418 struct wireless_dev *wdev = dev->ieee80211_ptr;
12419 const u8 *aa;
12420 int ret;
12421
12422 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12423 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12424 return -EOPNOTSUPP;
12425
12426 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12427 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12428 return -EOPNOTSUPP;
12429
12430 if (!info->attrs[NL80211_ATTR_MAC])
12431 return -EINVAL;
12432
12433 wdev_lock(wdev);
12434 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12435 ret = rdev_del_pmk(rdev, dev, aa);
12436 wdev_unlock(wdev);
12437
12438 return ret;
12439 }
12440
12441 #define NL80211_FLAG_NEED_WIPHY 0x01
12442 #define NL80211_FLAG_NEED_NETDEV 0x02
12443 #define NL80211_FLAG_NEED_RTNL 0x04
12444 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12445 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12446 NL80211_FLAG_CHECK_NETDEV_UP)
12447 #define NL80211_FLAG_NEED_WDEV 0x10
12448 /* If a netdev is associated, it must be UP, P2P must be started */
12449 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12450 NL80211_FLAG_CHECK_NETDEV_UP)
12451 #define NL80211_FLAG_CLEAR_SKB 0x20
12452
12453 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12454 struct genl_info *info)
12455 {
12456 struct cfg80211_registered_device *rdev;
12457 struct wireless_dev *wdev;
12458 struct net_device *dev;
12459 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12460
12461 if (rtnl)
12462 rtnl_lock();
12463
12464 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12465 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12466 if (IS_ERR(rdev)) {
12467 if (rtnl)
12468 rtnl_unlock();
12469 return PTR_ERR(rdev);
12470 }
12471 info->user_ptr[0] = rdev;
12472 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12473 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12474 ASSERT_RTNL();
12475
12476 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12477 info->attrs);
12478 if (IS_ERR(wdev)) {
12479 if (rtnl)
12480 rtnl_unlock();
12481 return PTR_ERR(wdev);
12482 }
12483
12484 dev = wdev->netdev;
12485 rdev = wiphy_to_rdev(wdev->wiphy);
12486
12487 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12488 if (!dev) {
12489 if (rtnl)
12490 rtnl_unlock();
12491 return -EINVAL;
12492 }
12493
12494 info->user_ptr[1] = dev;
12495 } else {
12496 info->user_ptr[1] = wdev;
12497 }
12498
12499 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12500 !wdev_running(wdev)) {
12501 if (rtnl)
12502 rtnl_unlock();
12503 return -ENETDOWN;
12504 }
12505
12506 if (dev)
12507 dev_hold(dev);
12508
12509 info->user_ptr[0] = rdev;
12510 }
12511
12512 return 0;
12513 }
12514
12515 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12516 struct genl_info *info)
12517 {
12518 if (info->user_ptr[1]) {
12519 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12520 struct wireless_dev *wdev = info->user_ptr[1];
12521
12522 if (wdev->netdev)
12523 dev_put(wdev->netdev);
12524 } else {
12525 dev_put(info->user_ptr[1]);
12526 }
12527 }
12528
12529 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12530 rtnl_unlock();
12531
12532 /* If needed, clear the netlink message payload from the SKB
12533 * as it might contain key data that shouldn't stick around on
12534 * the heap after the SKB is freed. The netlink message header
12535 * is still needed for further processing, so leave it intact.
12536 */
12537 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12538 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12539
12540 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12541 }
12542 }
12543
12544 static const struct genl_ops nl80211_ops[] = {
12545 {
12546 .cmd = NL80211_CMD_GET_WIPHY,
12547 .doit = nl80211_get_wiphy,
12548 .dumpit = nl80211_dump_wiphy,
12549 .done = nl80211_dump_wiphy_done,
12550 .policy = nl80211_policy,
12551 /* can be retrieved by unprivileged users */
12552 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12553 NL80211_FLAG_NEED_RTNL,
12554 },
12555 {
12556 .cmd = NL80211_CMD_SET_WIPHY,
12557 .doit = nl80211_set_wiphy,
12558 .policy = nl80211_policy,
12559 .flags = GENL_UNS_ADMIN_PERM,
12560 .internal_flags = NL80211_FLAG_NEED_RTNL,
12561 },
12562 {
12563 .cmd = NL80211_CMD_GET_INTERFACE,
12564 .doit = nl80211_get_interface,
12565 .dumpit = nl80211_dump_interface,
12566 .policy = nl80211_policy,
12567 /* can be retrieved by unprivileged users */
12568 .internal_flags = NL80211_FLAG_NEED_WDEV |
12569 NL80211_FLAG_NEED_RTNL,
12570 },
12571 {
12572 .cmd = NL80211_CMD_SET_INTERFACE,
12573 .doit = nl80211_set_interface,
12574 .policy = nl80211_policy,
12575 .flags = GENL_UNS_ADMIN_PERM,
12576 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12577 NL80211_FLAG_NEED_RTNL,
12578 },
12579 {
12580 .cmd = NL80211_CMD_NEW_INTERFACE,
12581 .doit = nl80211_new_interface,
12582 .policy = nl80211_policy,
12583 .flags = GENL_UNS_ADMIN_PERM,
12584 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12585 NL80211_FLAG_NEED_RTNL,
12586 },
12587 {
12588 .cmd = NL80211_CMD_DEL_INTERFACE,
12589 .doit = nl80211_del_interface,
12590 .policy = nl80211_policy,
12591 .flags = GENL_UNS_ADMIN_PERM,
12592 .internal_flags = NL80211_FLAG_NEED_WDEV |
12593 NL80211_FLAG_NEED_RTNL,
12594 },
12595 {
12596 .cmd = NL80211_CMD_GET_KEY,
12597 .doit = nl80211_get_key,
12598 .policy = nl80211_policy,
12599 .flags = GENL_UNS_ADMIN_PERM,
12600 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12601 NL80211_FLAG_NEED_RTNL,
12602 },
12603 {
12604 .cmd = NL80211_CMD_SET_KEY,
12605 .doit = nl80211_set_key,
12606 .policy = nl80211_policy,
12607 .flags = GENL_UNS_ADMIN_PERM,
12608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12609 NL80211_FLAG_NEED_RTNL |
12610 NL80211_FLAG_CLEAR_SKB,
12611 },
12612 {
12613 .cmd = NL80211_CMD_NEW_KEY,
12614 .doit = nl80211_new_key,
12615 .policy = nl80211_policy,
12616 .flags = GENL_UNS_ADMIN_PERM,
12617 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12618 NL80211_FLAG_NEED_RTNL |
12619 NL80211_FLAG_CLEAR_SKB,
12620 },
12621 {
12622 .cmd = NL80211_CMD_DEL_KEY,
12623 .doit = nl80211_del_key,
12624 .policy = nl80211_policy,
12625 .flags = GENL_UNS_ADMIN_PERM,
12626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12627 NL80211_FLAG_NEED_RTNL,
12628 },
12629 {
12630 .cmd = NL80211_CMD_SET_BEACON,
12631 .policy = nl80211_policy,
12632 .flags = GENL_UNS_ADMIN_PERM,
12633 .doit = nl80211_set_beacon,
12634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12635 NL80211_FLAG_NEED_RTNL,
12636 },
12637 {
12638 .cmd = NL80211_CMD_START_AP,
12639 .policy = nl80211_policy,
12640 .flags = GENL_UNS_ADMIN_PERM,
12641 .doit = nl80211_start_ap,
12642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12643 NL80211_FLAG_NEED_RTNL,
12644 },
12645 {
12646 .cmd = NL80211_CMD_STOP_AP,
12647 .policy = nl80211_policy,
12648 .flags = GENL_UNS_ADMIN_PERM,
12649 .doit = nl80211_stop_ap,
12650 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12651 NL80211_FLAG_NEED_RTNL,
12652 },
12653 {
12654 .cmd = NL80211_CMD_GET_STATION,
12655 .doit = nl80211_get_station,
12656 .dumpit = nl80211_dump_station,
12657 .policy = nl80211_policy,
12658 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12659 NL80211_FLAG_NEED_RTNL,
12660 },
12661 {
12662 .cmd = NL80211_CMD_SET_STATION,
12663 .doit = nl80211_set_station,
12664 .policy = nl80211_policy,
12665 .flags = GENL_UNS_ADMIN_PERM,
12666 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12667 NL80211_FLAG_NEED_RTNL,
12668 },
12669 {
12670 .cmd = NL80211_CMD_NEW_STATION,
12671 .doit = nl80211_new_station,
12672 .policy = nl80211_policy,
12673 .flags = GENL_UNS_ADMIN_PERM,
12674 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675 NL80211_FLAG_NEED_RTNL,
12676 },
12677 {
12678 .cmd = NL80211_CMD_DEL_STATION,
12679 .doit = nl80211_del_station,
12680 .policy = nl80211_policy,
12681 .flags = GENL_UNS_ADMIN_PERM,
12682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683 NL80211_FLAG_NEED_RTNL,
12684 },
12685 {
12686 .cmd = NL80211_CMD_GET_MPATH,
12687 .doit = nl80211_get_mpath,
12688 .dumpit = nl80211_dump_mpath,
12689 .policy = nl80211_policy,
12690 .flags = GENL_UNS_ADMIN_PERM,
12691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12692 NL80211_FLAG_NEED_RTNL,
12693 },
12694 {
12695 .cmd = NL80211_CMD_GET_MPP,
12696 .doit = nl80211_get_mpp,
12697 .dumpit = nl80211_dump_mpp,
12698 .policy = nl80211_policy,
12699 .flags = GENL_UNS_ADMIN_PERM,
12700 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12701 NL80211_FLAG_NEED_RTNL,
12702 },
12703 {
12704 .cmd = NL80211_CMD_SET_MPATH,
12705 .doit = nl80211_set_mpath,
12706 .policy = nl80211_policy,
12707 .flags = GENL_UNS_ADMIN_PERM,
12708 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12709 NL80211_FLAG_NEED_RTNL,
12710 },
12711 {
12712 .cmd = NL80211_CMD_NEW_MPATH,
12713 .doit = nl80211_new_mpath,
12714 .policy = nl80211_policy,
12715 .flags = GENL_UNS_ADMIN_PERM,
12716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12717 NL80211_FLAG_NEED_RTNL,
12718 },
12719 {
12720 .cmd = NL80211_CMD_DEL_MPATH,
12721 .doit = nl80211_del_mpath,
12722 .policy = nl80211_policy,
12723 .flags = GENL_UNS_ADMIN_PERM,
12724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12725 NL80211_FLAG_NEED_RTNL,
12726 },
12727 {
12728 .cmd = NL80211_CMD_SET_BSS,
12729 .doit = nl80211_set_bss,
12730 .policy = nl80211_policy,
12731 .flags = GENL_UNS_ADMIN_PERM,
12732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12733 NL80211_FLAG_NEED_RTNL,
12734 },
12735 {
12736 .cmd = NL80211_CMD_GET_REG,
12737 .doit = nl80211_get_reg_do,
12738 .dumpit = nl80211_get_reg_dump,
12739 .policy = nl80211_policy,
12740 .internal_flags = NL80211_FLAG_NEED_RTNL,
12741 /* can be retrieved by unprivileged users */
12742 },
12743 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12744 {
12745 .cmd = NL80211_CMD_SET_REG,
12746 .doit = nl80211_set_reg,
12747 .policy = nl80211_policy,
12748 .flags = GENL_ADMIN_PERM,
12749 .internal_flags = NL80211_FLAG_NEED_RTNL,
12750 },
12751 #endif
12752 {
12753 .cmd = NL80211_CMD_REQ_SET_REG,
12754 .doit = nl80211_req_set_reg,
12755 .policy = nl80211_policy,
12756 .flags = GENL_ADMIN_PERM,
12757 },
12758 {
12759 .cmd = NL80211_CMD_RELOAD_REGDB,
12760 .doit = nl80211_reload_regdb,
12761 .policy = nl80211_policy,
12762 .flags = GENL_ADMIN_PERM,
12763 },
12764 {
12765 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12766 .doit = nl80211_get_mesh_config,
12767 .policy = nl80211_policy,
12768 /* can be retrieved by unprivileged users */
12769 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12770 NL80211_FLAG_NEED_RTNL,
12771 },
12772 {
12773 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12774 .doit = nl80211_update_mesh_config,
12775 .policy = nl80211_policy,
12776 .flags = GENL_UNS_ADMIN_PERM,
12777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12778 NL80211_FLAG_NEED_RTNL,
12779 },
12780 {
12781 .cmd = NL80211_CMD_TRIGGER_SCAN,
12782 .doit = nl80211_trigger_scan,
12783 .policy = nl80211_policy,
12784 .flags = GENL_UNS_ADMIN_PERM,
12785 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12786 NL80211_FLAG_NEED_RTNL,
12787 },
12788 {
12789 .cmd = NL80211_CMD_ABORT_SCAN,
12790 .doit = nl80211_abort_scan,
12791 .policy = nl80211_policy,
12792 .flags = GENL_UNS_ADMIN_PERM,
12793 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12794 NL80211_FLAG_NEED_RTNL,
12795 },
12796 {
12797 .cmd = NL80211_CMD_GET_SCAN,
12798 .policy = nl80211_policy,
12799 .dumpit = nl80211_dump_scan,
12800 },
12801 {
12802 .cmd = NL80211_CMD_START_SCHED_SCAN,
12803 .doit = nl80211_start_sched_scan,
12804 .policy = nl80211_policy,
12805 .flags = GENL_UNS_ADMIN_PERM,
12806 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12807 NL80211_FLAG_NEED_RTNL,
12808 },
12809 {
12810 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12811 .doit = nl80211_stop_sched_scan,
12812 .policy = nl80211_policy,
12813 .flags = GENL_UNS_ADMIN_PERM,
12814 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12815 NL80211_FLAG_NEED_RTNL,
12816 },
12817 {
12818 .cmd = NL80211_CMD_AUTHENTICATE,
12819 .doit = nl80211_authenticate,
12820 .policy = nl80211_policy,
12821 .flags = GENL_UNS_ADMIN_PERM,
12822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12823 NL80211_FLAG_NEED_RTNL |
12824 NL80211_FLAG_CLEAR_SKB,
12825 },
12826 {
12827 .cmd = NL80211_CMD_ASSOCIATE,
12828 .doit = nl80211_associate,
12829 .policy = nl80211_policy,
12830 .flags = GENL_UNS_ADMIN_PERM,
12831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12832 NL80211_FLAG_NEED_RTNL,
12833 },
12834 {
12835 .cmd = NL80211_CMD_DEAUTHENTICATE,
12836 .doit = nl80211_deauthenticate,
12837 .policy = nl80211_policy,
12838 .flags = GENL_UNS_ADMIN_PERM,
12839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12840 NL80211_FLAG_NEED_RTNL,
12841 },
12842 {
12843 .cmd = NL80211_CMD_DISASSOCIATE,
12844 .doit = nl80211_disassociate,
12845 .policy = nl80211_policy,
12846 .flags = GENL_UNS_ADMIN_PERM,
12847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12848 NL80211_FLAG_NEED_RTNL,
12849 },
12850 {
12851 .cmd = NL80211_CMD_JOIN_IBSS,
12852 .doit = nl80211_join_ibss,
12853 .policy = nl80211_policy,
12854 .flags = GENL_UNS_ADMIN_PERM,
12855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12856 NL80211_FLAG_NEED_RTNL,
12857 },
12858 {
12859 .cmd = NL80211_CMD_LEAVE_IBSS,
12860 .doit = nl80211_leave_ibss,
12861 .policy = nl80211_policy,
12862 .flags = GENL_UNS_ADMIN_PERM,
12863 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12864 NL80211_FLAG_NEED_RTNL,
12865 },
12866 #ifdef CONFIG_NL80211_TESTMODE
12867 {
12868 .cmd = NL80211_CMD_TESTMODE,
12869 .doit = nl80211_testmode_do,
12870 .dumpit = nl80211_testmode_dump,
12871 .policy = nl80211_policy,
12872 .flags = GENL_UNS_ADMIN_PERM,
12873 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12874 NL80211_FLAG_NEED_RTNL,
12875 },
12876 #endif
12877 {
12878 .cmd = NL80211_CMD_CONNECT,
12879 .doit = nl80211_connect,
12880 .policy = nl80211_policy,
12881 .flags = GENL_UNS_ADMIN_PERM,
12882 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12883 NL80211_FLAG_NEED_RTNL,
12884 },
12885 {
12886 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12887 .doit = nl80211_update_connect_params,
12888 .policy = nl80211_policy,
12889 .flags = GENL_ADMIN_PERM,
12890 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12891 NL80211_FLAG_NEED_RTNL,
12892 },
12893 {
12894 .cmd = NL80211_CMD_DISCONNECT,
12895 .doit = nl80211_disconnect,
12896 .policy = nl80211_policy,
12897 .flags = GENL_UNS_ADMIN_PERM,
12898 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12899 NL80211_FLAG_NEED_RTNL,
12900 },
12901 {
12902 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12903 .doit = nl80211_wiphy_netns,
12904 .policy = nl80211_policy,
12905 .flags = GENL_UNS_ADMIN_PERM,
12906 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12907 NL80211_FLAG_NEED_RTNL,
12908 },
12909 {
12910 .cmd = NL80211_CMD_GET_SURVEY,
12911 .policy = nl80211_policy,
12912 .dumpit = nl80211_dump_survey,
12913 },
12914 {
12915 .cmd = NL80211_CMD_SET_PMKSA,
12916 .doit = nl80211_setdel_pmksa,
12917 .policy = nl80211_policy,
12918 .flags = GENL_UNS_ADMIN_PERM,
12919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12920 NL80211_FLAG_NEED_RTNL,
12921 },
12922 {
12923 .cmd = NL80211_CMD_DEL_PMKSA,
12924 .doit = nl80211_setdel_pmksa,
12925 .policy = nl80211_policy,
12926 .flags = GENL_UNS_ADMIN_PERM,
12927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12928 NL80211_FLAG_NEED_RTNL,
12929 },
12930 {
12931 .cmd = NL80211_CMD_FLUSH_PMKSA,
12932 .doit = nl80211_flush_pmksa,
12933 .policy = nl80211_policy,
12934 .flags = GENL_UNS_ADMIN_PERM,
12935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12936 NL80211_FLAG_NEED_RTNL,
12937 },
12938 {
12939 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12940 .doit = nl80211_remain_on_channel,
12941 .policy = nl80211_policy,
12942 .flags = GENL_UNS_ADMIN_PERM,
12943 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12944 NL80211_FLAG_NEED_RTNL,
12945 },
12946 {
12947 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12948 .doit = nl80211_cancel_remain_on_channel,
12949 .policy = nl80211_policy,
12950 .flags = GENL_UNS_ADMIN_PERM,
12951 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12952 NL80211_FLAG_NEED_RTNL,
12953 },
12954 {
12955 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12956 .doit = nl80211_set_tx_bitrate_mask,
12957 .policy = nl80211_policy,
12958 .flags = GENL_UNS_ADMIN_PERM,
12959 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12960 NL80211_FLAG_NEED_RTNL,
12961 },
12962 {
12963 .cmd = NL80211_CMD_REGISTER_FRAME,
12964 .doit = nl80211_register_mgmt,
12965 .policy = nl80211_policy,
12966 .flags = GENL_UNS_ADMIN_PERM,
12967 .internal_flags = NL80211_FLAG_NEED_WDEV |
12968 NL80211_FLAG_NEED_RTNL,
12969 },
12970 {
12971 .cmd = NL80211_CMD_FRAME,
12972 .doit = nl80211_tx_mgmt,
12973 .policy = nl80211_policy,
12974 .flags = GENL_UNS_ADMIN_PERM,
12975 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12976 NL80211_FLAG_NEED_RTNL,
12977 },
12978 {
12979 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12980 .doit = nl80211_tx_mgmt_cancel_wait,
12981 .policy = nl80211_policy,
12982 .flags = GENL_UNS_ADMIN_PERM,
12983 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12984 NL80211_FLAG_NEED_RTNL,
12985 },
12986 {
12987 .cmd = NL80211_CMD_SET_POWER_SAVE,
12988 .doit = nl80211_set_power_save,
12989 .policy = nl80211_policy,
12990 .flags = GENL_UNS_ADMIN_PERM,
12991 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12992 NL80211_FLAG_NEED_RTNL,
12993 },
12994 {
12995 .cmd = NL80211_CMD_GET_POWER_SAVE,
12996 .doit = nl80211_get_power_save,
12997 .policy = nl80211_policy,
12998 /* can be retrieved by unprivileged users */
12999 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13000 NL80211_FLAG_NEED_RTNL,
13001 },
13002 {
13003 .cmd = NL80211_CMD_SET_CQM,
13004 .doit = nl80211_set_cqm,
13005 .policy = nl80211_policy,
13006 .flags = GENL_UNS_ADMIN_PERM,
13007 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13008 NL80211_FLAG_NEED_RTNL,
13009 },
13010 {
13011 .cmd = NL80211_CMD_SET_CHANNEL,
13012 .doit = nl80211_set_channel,
13013 .policy = nl80211_policy,
13014 .flags = GENL_UNS_ADMIN_PERM,
13015 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13016 NL80211_FLAG_NEED_RTNL,
13017 },
13018 {
13019 .cmd = NL80211_CMD_SET_WDS_PEER,
13020 .doit = nl80211_set_wds_peer,
13021 .policy = nl80211_policy,
13022 .flags = GENL_UNS_ADMIN_PERM,
13023 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13024 NL80211_FLAG_NEED_RTNL,
13025 },
13026 {
13027 .cmd = NL80211_CMD_JOIN_MESH,
13028 .doit = nl80211_join_mesh,
13029 .policy = nl80211_policy,
13030 .flags = GENL_UNS_ADMIN_PERM,
13031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13032 NL80211_FLAG_NEED_RTNL,
13033 },
13034 {
13035 .cmd = NL80211_CMD_LEAVE_MESH,
13036 .doit = nl80211_leave_mesh,
13037 .policy = nl80211_policy,
13038 .flags = GENL_UNS_ADMIN_PERM,
13039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13040 NL80211_FLAG_NEED_RTNL,
13041 },
13042 {
13043 .cmd = NL80211_CMD_JOIN_OCB,
13044 .doit = nl80211_join_ocb,
13045 .policy = nl80211_policy,
13046 .flags = GENL_UNS_ADMIN_PERM,
13047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13048 NL80211_FLAG_NEED_RTNL,
13049 },
13050 {
13051 .cmd = NL80211_CMD_LEAVE_OCB,
13052 .doit = nl80211_leave_ocb,
13053 .policy = nl80211_policy,
13054 .flags = GENL_UNS_ADMIN_PERM,
13055 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13056 NL80211_FLAG_NEED_RTNL,
13057 },
13058 #ifdef CONFIG_PM
13059 {
13060 .cmd = NL80211_CMD_GET_WOWLAN,
13061 .doit = nl80211_get_wowlan,
13062 .policy = nl80211_policy,
13063 /* can be retrieved by unprivileged users */
13064 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13065 NL80211_FLAG_NEED_RTNL,
13066 },
13067 {
13068 .cmd = NL80211_CMD_SET_WOWLAN,
13069 .doit = nl80211_set_wowlan,
13070 .policy = nl80211_policy,
13071 .flags = GENL_UNS_ADMIN_PERM,
13072 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13073 NL80211_FLAG_NEED_RTNL,
13074 },
13075 #endif
13076 {
13077 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13078 .doit = nl80211_set_rekey_data,
13079 .policy = nl80211_policy,
13080 .flags = GENL_UNS_ADMIN_PERM,
13081 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13082 NL80211_FLAG_NEED_RTNL |
13083 NL80211_FLAG_CLEAR_SKB,
13084 },
13085 {
13086 .cmd = NL80211_CMD_TDLS_MGMT,
13087 .doit = nl80211_tdls_mgmt,
13088 .policy = nl80211_policy,
13089 .flags = GENL_UNS_ADMIN_PERM,
13090 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13091 NL80211_FLAG_NEED_RTNL,
13092 },
13093 {
13094 .cmd = NL80211_CMD_TDLS_OPER,
13095 .doit = nl80211_tdls_oper,
13096 .policy = nl80211_policy,
13097 .flags = GENL_UNS_ADMIN_PERM,
13098 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13099 NL80211_FLAG_NEED_RTNL,
13100 },
13101 {
13102 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13103 .doit = nl80211_register_unexpected_frame,
13104 .policy = nl80211_policy,
13105 .flags = GENL_UNS_ADMIN_PERM,
13106 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13107 NL80211_FLAG_NEED_RTNL,
13108 },
13109 {
13110 .cmd = NL80211_CMD_PROBE_CLIENT,
13111 .doit = nl80211_probe_client,
13112 .policy = nl80211_policy,
13113 .flags = GENL_UNS_ADMIN_PERM,
13114 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13115 NL80211_FLAG_NEED_RTNL,
13116 },
13117 {
13118 .cmd = NL80211_CMD_REGISTER_BEACONS,
13119 .doit = nl80211_register_beacons,
13120 .policy = nl80211_policy,
13121 .flags = GENL_UNS_ADMIN_PERM,
13122 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13123 NL80211_FLAG_NEED_RTNL,
13124 },
13125 {
13126 .cmd = NL80211_CMD_SET_NOACK_MAP,
13127 .doit = nl80211_set_noack_map,
13128 .policy = nl80211_policy,
13129 .flags = GENL_UNS_ADMIN_PERM,
13130 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13131 NL80211_FLAG_NEED_RTNL,
13132 },
13133 {
13134 .cmd = NL80211_CMD_START_P2P_DEVICE,
13135 .doit = nl80211_start_p2p_device,
13136 .policy = nl80211_policy,
13137 .flags = GENL_UNS_ADMIN_PERM,
13138 .internal_flags = NL80211_FLAG_NEED_WDEV |
13139 NL80211_FLAG_NEED_RTNL,
13140 },
13141 {
13142 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13143 .doit = nl80211_stop_p2p_device,
13144 .policy = nl80211_policy,
13145 .flags = GENL_UNS_ADMIN_PERM,
13146 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13147 NL80211_FLAG_NEED_RTNL,
13148 },
13149 {
13150 .cmd = NL80211_CMD_START_NAN,
13151 .doit = nl80211_start_nan,
13152 .policy = nl80211_policy,
13153 .flags = GENL_ADMIN_PERM,
13154 .internal_flags = NL80211_FLAG_NEED_WDEV |
13155 NL80211_FLAG_NEED_RTNL,
13156 },
13157 {
13158 .cmd = NL80211_CMD_STOP_NAN,
13159 .doit = nl80211_stop_nan,
13160 .policy = nl80211_policy,
13161 .flags = GENL_ADMIN_PERM,
13162 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13163 NL80211_FLAG_NEED_RTNL,
13164 },
13165 {
13166 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13167 .doit = nl80211_nan_add_func,
13168 .policy = nl80211_policy,
13169 .flags = GENL_ADMIN_PERM,
13170 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13171 NL80211_FLAG_NEED_RTNL,
13172 },
13173 {
13174 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13175 .doit = nl80211_nan_del_func,
13176 .policy = nl80211_policy,
13177 .flags = GENL_ADMIN_PERM,
13178 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13179 NL80211_FLAG_NEED_RTNL,
13180 },
13181 {
13182 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13183 .doit = nl80211_nan_change_config,
13184 .policy = nl80211_policy,
13185 .flags = GENL_ADMIN_PERM,
13186 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13187 NL80211_FLAG_NEED_RTNL,
13188 },
13189 {
13190 .cmd = NL80211_CMD_SET_MCAST_RATE,
13191 .doit = nl80211_set_mcast_rate,
13192 .policy = nl80211_policy,
13193 .flags = GENL_UNS_ADMIN_PERM,
13194 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13195 NL80211_FLAG_NEED_RTNL,
13196 },
13197 {
13198 .cmd = NL80211_CMD_SET_MAC_ACL,
13199 .doit = nl80211_set_mac_acl,
13200 .policy = nl80211_policy,
13201 .flags = GENL_UNS_ADMIN_PERM,
13202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13203 NL80211_FLAG_NEED_RTNL,
13204 },
13205 {
13206 .cmd = NL80211_CMD_RADAR_DETECT,
13207 .doit = nl80211_start_radar_detection,
13208 .policy = nl80211_policy,
13209 .flags = GENL_UNS_ADMIN_PERM,
13210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13211 NL80211_FLAG_NEED_RTNL,
13212 },
13213 {
13214 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13215 .doit = nl80211_get_protocol_features,
13216 .policy = nl80211_policy,
13217 },
13218 {
13219 .cmd = NL80211_CMD_UPDATE_FT_IES,
13220 .doit = nl80211_update_ft_ies,
13221 .policy = nl80211_policy,
13222 .flags = GENL_UNS_ADMIN_PERM,
13223 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13224 NL80211_FLAG_NEED_RTNL,
13225 },
13226 {
13227 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13228 .doit = nl80211_crit_protocol_start,
13229 .policy = nl80211_policy,
13230 .flags = GENL_UNS_ADMIN_PERM,
13231 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13232 NL80211_FLAG_NEED_RTNL,
13233 },
13234 {
13235 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13236 .doit = nl80211_crit_protocol_stop,
13237 .policy = nl80211_policy,
13238 .flags = GENL_UNS_ADMIN_PERM,
13239 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13240 NL80211_FLAG_NEED_RTNL,
13241 },
13242 {
13243 .cmd = NL80211_CMD_GET_COALESCE,
13244 .doit = nl80211_get_coalesce,
13245 .policy = nl80211_policy,
13246 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13247 NL80211_FLAG_NEED_RTNL,
13248 },
13249 {
13250 .cmd = NL80211_CMD_SET_COALESCE,
13251 .doit = nl80211_set_coalesce,
13252 .policy = nl80211_policy,
13253 .flags = GENL_UNS_ADMIN_PERM,
13254 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13255 NL80211_FLAG_NEED_RTNL,
13256 },
13257 {
13258 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13259 .doit = nl80211_channel_switch,
13260 .policy = nl80211_policy,
13261 .flags = GENL_UNS_ADMIN_PERM,
13262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13263 NL80211_FLAG_NEED_RTNL,
13264 },
13265 {
13266 .cmd = NL80211_CMD_VENDOR,
13267 .doit = nl80211_vendor_cmd,
13268 .dumpit = nl80211_vendor_cmd_dump,
13269 .policy = nl80211_policy,
13270 .flags = GENL_UNS_ADMIN_PERM,
13271 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13272 NL80211_FLAG_NEED_RTNL,
13273 },
13274 {
13275 .cmd = NL80211_CMD_SET_QOS_MAP,
13276 .doit = nl80211_set_qos_map,
13277 .policy = nl80211_policy,
13278 .flags = GENL_UNS_ADMIN_PERM,
13279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13280 NL80211_FLAG_NEED_RTNL,
13281 },
13282 {
13283 .cmd = NL80211_CMD_ADD_TX_TS,
13284 .doit = nl80211_add_tx_ts,
13285 .policy = nl80211_policy,
13286 .flags = GENL_UNS_ADMIN_PERM,
13287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13288 NL80211_FLAG_NEED_RTNL,
13289 },
13290 {
13291 .cmd = NL80211_CMD_DEL_TX_TS,
13292 .doit = nl80211_del_tx_ts,
13293 .policy = nl80211_policy,
13294 .flags = GENL_UNS_ADMIN_PERM,
13295 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13296 NL80211_FLAG_NEED_RTNL,
13297 },
13298 {
13299 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13300 .doit = nl80211_tdls_channel_switch,
13301 .policy = nl80211_policy,
13302 .flags = GENL_UNS_ADMIN_PERM,
13303 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13304 NL80211_FLAG_NEED_RTNL,
13305 },
13306 {
13307 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13308 .doit = nl80211_tdls_cancel_channel_switch,
13309 .policy = nl80211_policy,
13310 .flags = GENL_UNS_ADMIN_PERM,
13311 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13312 NL80211_FLAG_NEED_RTNL,
13313 },
13314 {
13315 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13316 .doit = nl80211_set_multicast_to_unicast,
13317 .policy = nl80211_policy,
13318 .flags = GENL_UNS_ADMIN_PERM,
13319 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13320 NL80211_FLAG_NEED_RTNL,
13321 },
13322 {
13323 .cmd = NL80211_CMD_SET_PMK,
13324 .doit = nl80211_set_pmk,
13325 .policy = nl80211_policy,
13326 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13327 NL80211_FLAG_NEED_RTNL,
13328 },
13329 {
13330 .cmd = NL80211_CMD_DEL_PMK,
13331 .doit = nl80211_del_pmk,
13332 .policy = nl80211_policy,
13333 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13334 NL80211_FLAG_NEED_RTNL,
13335 },
13336
13337 };
13338
13339 static struct genl_family nl80211_fam __ro_after_init = {
13340 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13341 .hdrsize = 0, /* no private header */
13342 .version = 1, /* no particular meaning now */
13343 .maxattr = NL80211_ATTR_MAX,
13344 .netnsok = true,
13345 .pre_doit = nl80211_pre_doit,
13346 .post_doit = nl80211_post_doit,
13347 .module = THIS_MODULE,
13348 .ops = nl80211_ops,
13349 .n_ops = ARRAY_SIZE(nl80211_ops),
13350 .mcgrps = nl80211_mcgrps,
13351 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13352 };
13353
13354 /* notification functions */
13355
13356 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13357 enum nl80211_commands cmd)
13358 {
13359 struct sk_buff *msg;
13360 struct nl80211_dump_wiphy_state state = {};
13361
13362 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13363 cmd != NL80211_CMD_DEL_WIPHY);
13364
13365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13366 if (!msg)
13367 return;
13368
13369 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13370 nlmsg_free(msg);
13371 return;
13372 }
13373
13374 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13375 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13376 }
13377
13378 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13379 struct wireless_dev *wdev,
13380 enum nl80211_commands cmd)
13381 {
13382 struct sk_buff *msg;
13383
13384 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13385 cmd != NL80211_CMD_DEL_INTERFACE);
13386
13387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13388 if (!msg)
13389 return;
13390
13391 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13392 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13393 nlmsg_free(msg);
13394 return;
13395 }
13396
13397 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13398 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13399 }
13400
13401 static int nl80211_add_scan_req(struct sk_buff *msg,
13402 struct cfg80211_registered_device *rdev)
13403 {
13404 struct cfg80211_scan_request *req = rdev->scan_req;
13405 struct nlattr *nest;
13406 int i;
13407
13408 if (WARN_ON(!req))
13409 return 0;
13410
13411 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13412 if (!nest)
13413 goto nla_put_failure;
13414 for (i = 0; i < req->n_ssids; i++) {
13415 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13416 goto nla_put_failure;
13417 }
13418 nla_nest_end(msg, nest);
13419
13420 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13421 if (!nest)
13422 goto nla_put_failure;
13423 for (i = 0; i < req->n_channels; i++) {
13424 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13425 goto nla_put_failure;
13426 }
13427 nla_nest_end(msg, nest);
13428
13429 if (req->ie &&
13430 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13431 goto nla_put_failure;
13432
13433 if (req->flags &&
13434 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13435 goto nla_put_failure;
13436
13437 if (req->info.scan_start_tsf &&
13438 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13439 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13440 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13441 req->info.tsf_bssid)))
13442 goto nla_put_failure;
13443
13444 return 0;
13445 nla_put_failure:
13446 return -ENOBUFS;
13447 }
13448
13449 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13450 struct cfg80211_registered_device *rdev,
13451 struct wireless_dev *wdev,
13452 u32 portid, u32 seq, int flags,
13453 u32 cmd)
13454 {
13455 void *hdr;
13456
13457 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13458 if (!hdr)
13459 return -1;
13460
13461 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13462 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13463 wdev->netdev->ifindex)) ||
13464 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13465 NL80211_ATTR_PAD))
13466 goto nla_put_failure;
13467
13468 /* ignore errors and send incomplete event anyway */
13469 nl80211_add_scan_req(msg, rdev);
13470
13471 genlmsg_end(msg, hdr);
13472 return 0;
13473
13474 nla_put_failure:
13475 genlmsg_cancel(msg, hdr);
13476 return -EMSGSIZE;
13477 }
13478
13479 static int
13480 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13481 struct cfg80211_sched_scan_request *req, u32 cmd)
13482 {
13483 void *hdr;
13484
13485 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13486 if (!hdr)
13487 return -1;
13488
13489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13490 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13491 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13492 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13493 NL80211_ATTR_PAD))
13494 goto nla_put_failure;
13495
13496 genlmsg_end(msg, hdr);
13497 return 0;
13498
13499 nla_put_failure:
13500 genlmsg_cancel(msg, hdr);
13501 return -EMSGSIZE;
13502 }
13503
13504 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13505 struct wireless_dev *wdev)
13506 {
13507 struct sk_buff *msg;
13508
13509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13510 if (!msg)
13511 return;
13512
13513 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13514 NL80211_CMD_TRIGGER_SCAN) < 0) {
13515 nlmsg_free(msg);
13516 return;
13517 }
13518
13519 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13520 NL80211_MCGRP_SCAN, GFP_KERNEL);
13521 }
13522
13523 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13524 struct wireless_dev *wdev, bool aborted)
13525 {
13526 struct sk_buff *msg;
13527
13528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13529 if (!msg)
13530 return NULL;
13531
13532 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13533 aborted ? NL80211_CMD_SCAN_ABORTED :
13534 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13535 nlmsg_free(msg);
13536 return NULL;
13537 }
13538
13539 return msg;
13540 }
13541
13542 /* send message created by nl80211_build_scan_msg() */
13543 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13544 struct sk_buff *msg)
13545 {
13546 if (!msg)
13547 return;
13548
13549 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13550 NL80211_MCGRP_SCAN, GFP_KERNEL);
13551 }
13552
13553 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13554 {
13555 struct sk_buff *msg;
13556
13557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13558 if (!msg)
13559 return;
13560
13561 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13562 nlmsg_free(msg);
13563 return;
13564 }
13565
13566 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13567 NL80211_MCGRP_SCAN, GFP_KERNEL);
13568 }
13569
13570 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13571 struct regulatory_request *request)
13572 {
13573 /* Userspace can always count this one always being set */
13574 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13575 goto nla_put_failure;
13576
13577 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13578 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13579 NL80211_REGDOM_TYPE_WORLD))
13580 goto nla_put_failure;
13581 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13582 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13583 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13584 goto nla_put_failure;
13585 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13586 request->intersect) {
13587 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13588 NL80211_REGDOM_TYPE_INTERSECTION))
13589 goto nla_put_failure;
13590 } else {
13591 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13592 NL80211_REGDOM_TYPE_COUNTRY) ||
13593 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13594 request->alpha2))
13595 goto nla_put_failure;
13596 }
13597
13598 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13599 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13600
13601 if (wiphy &&
13602 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13603 goto nla_put_failure;
13604
13605 if (wiphy &&
13606 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13607 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13608 goto nla_put_failure;
13609 }
13610
13611 return true;
13612
13613 nla_put_failure:
13614 return false;
13615 }
13616
13617 /*
13618 * This can happen on global regulatory changes or device specific settings
13619 * based on custom regulatory domains.
13620 */
13621 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13622 struct regulatory_request *request)
13623 {
13624 struct sk_buff *msg;
13625 void *hdr;
13626
13627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13628 if (!msg)
13629 return;
13630
13631 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13632 if (!hdr) {
13633 nlmsg_free(msg);
13634 return;
13635 }
13636
13637 if (nl80211_reg_change_event_fill(msg, request) == false)
13638 goto nla_put_failure;
13639
13640 genlmsg_end(msg, hdr);
13641
13642 rcu_read_lock();
13643 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13644 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13645 rcu_read_unlock();
13646
13647 return;
13648
13649 nla_put_failure:
13650 genlmsg_cancel(msg, hdr);
13651 nlmsg_free(msg);
13652 }
13653
13654 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13655 struct net_device *netdev,
13656 const u8 *buf, size_t len,
13657 enum nl80211_commands cmd, gfp_t gfp,
13658 int uapsd_queues)
13659 {
13660 struct sk_buff *msg;
13661 void *hdr;
13662
13663 msg = nlmsg_new(100 + len, gfp);
13664 if (!msg)
13665 return;
13666
13667 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13668 if (!hdr) {
13669 nlmsg_free(msg);
13670 return;
13671 }
13672
13673 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13674 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13675 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13676 goto nla_put_failure;
13677
13678 if (uapsd_queues >= 0) {
13679 struct nlattr *nla_wmm =
13680 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13681 if (!nla_wmm)
13682 goto nla_put_failure;
13683
13684 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13685 uapsd_queues))
13686 goto nla_put_failure;
13687
13688 nla_nest_end(msg, nla_wmm);
13689 }
13690
13691 genlmsg_end(msg, hdr);
13692
13693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13694 NL80211_MCGRP_MLME, gfp);
13695 return;
13696
13697 nla_put_failure:
13698 genlmsg_cancel(msg, hdr);
13699 nlmsg_free(msg);
13700 }
13701
13702 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13703 struct net_device *netdev, const u8 *buf,
13704 size_t len, gfp_t gfp)
13705 {
13706 nl80211_send_mlme_event(rdev, netdev, buf, len,
13707 NL80211_CMD_AUTHENTICATE, gfp, -1);
13708 }
13709
13710 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13711 struct net_device *netdev, const u8 *buf,
13712 size_t len, gfp_t gfp, int uapsd_queues)
13713 {
13714 nl80211_send_mlme_event(rdev, netdev, buf, len,
13715 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13716 }
13717
13718 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13719 struct net_device *netdev, const u8 *buf,
13720 size_t len, gfp_t gfp)
13721 {
13722 nl80211_send_mlme_event(rdev, netdev, buf, len,
13723 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13724 }
13725
13726 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13727 struct net_device *netdev, const u8 *buf,
13728 size_t len, gfp_t gfp)
13729 {
13730 nl80211_send_mlme_event(rdev, netdev, buf, len,
13731 NL80211_CMD_DISASSOCIATE, gfp, -1);
13732 }
13733
13734 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13735 size_t len)
13736 {
13737 struct wireless_dev *wdev = dev->ieee80211_ptr;
13738 struct wiphy *wiphy = wdev->wiphy;
13739 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13740 const struct ieee80211_mgmt *mgmt = (void *)buf;
13741 u32 cmd;
13742
13743 if (WARN_ON(len < 2))
13744 return;
13745
13746 if (ieee80211_is_deauth(mgmt->frame_control))
13747 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13748 else
13749 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13750
13751 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13752 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13753 }
13754 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13755
13756 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13757 struct net_device *netdev, int cmd,
13758 const u8 *addr, gfp_t gfp)
13759 {
13760 struct sk_buff *msg;
13761 void *hdr;
13762
13763 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13764 if (!msg)
13765 return;
13766
13767 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13768 if (!hdr) {
13769 nlmsg_free(msg);
13770 return;
13771 }
13772
13773 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13774 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13775 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13776 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13777 goto nla_put_failure;
13778
13779 genlmsg_end(msg, hdr);
13780
13781 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13782 NL80211_MCGRP_MLME, gfp);
13783 return;
13784
13785 nla_put_failure:
13786 genlmsg_cancel(msg, hdr);
13787 nlmsg_free(msg);
13788 }
13789
13790 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13791 struct net_device *netdev, const u8 *addr,
13792 gfp_t gfp)
13793 {
13794 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13795 addr, gfp);
13796 }
13797
13798 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13799 struct net_device *netdev, const u8 *addr,
13800 gfp_t gfp)
13801 {
13802 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13803 addr, gfp);
13804 }
13805
13806 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13807 struct net_device *netdev,
13808 struct cfg80211_connect_resp_params *cr,
13809 gfp_t gfp)
13810 {
13811 struct sk_buff *msg;
13812 void *hdr;
13813
13814 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13815 cr->fils_kek_len + cr->pmk_len +
13816 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13817 if (!msg)
13818 return;
13819
13820 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13821 if (!hdr) {
13822 nlmsg_free(msg);
13823 return;
13824 }
13825
13826 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13827 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13828 (cr->bssid &&
13829 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13830 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13831 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13832 cr->status) ||
13833 (cr->status < 0 &&
13834 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13835 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13836 cr->timeout_reason))) ||
13837 (cr->req_ie &&
13838 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13839 (cr->resp_ie &&
13840 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13841 cr->resp_ie)) ||
13842 (cr->update_erp_next_seq_num &&
13843 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13844 cr->fils_erp_next_seq_num)) ||
13845 (cr->status == WLAN_STATUS_SUCCESS &&
13846 ((cr->fils_kek &&
13847 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13848 cr->fils_kek)) ||
13849 (cr->pmk &&
13850 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13851 (cr->pmkid &&
13852 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13853 goto nla_put_failure;
13854
13855 genlmsg_end(msg, hdr);
13856
13857 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13858 NL80211_MCGRP_MLME, gfp);
13859 return;
13860
13861 nla_put_failure:
13862 genlmsg_cancel(msg, hdr);
13863 nlmsg_free(msg);
13864 }
13865
13866 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13867 struct net_device *netdev,
13868 struct cfg80211_roam_info *info, gfp_t gfp)
13869 {
13870 struct sk_buff *msg;
13871 void *hdr;
13872 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13873
13874 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13875 if (!msg)
13876 return;
13877
13878 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13879 if (!hdr) {
13880 nlmsg_free(msg);
13881 return;
13882 }
13883
13884 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13885 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13886 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13887 (info->req_ie &&
13888 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13889 info->req_ie)) ||
13890 (info->resp_ie &&
13891 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13892 info->resp_ie)))
13893 goto nla_put_failure;
13894
13895 genlmsg_end(msg, hdr);
13896
13897 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13898 NL80211_MCGRP_MLME, gfp);
13899 return;
13900
13901 nla_put_failure:
13902 genlmsg_cancel(msg, hdr);
13903 nlmsg_free(msg);
13904 }
13905
13906 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13907 struct net_device *netdev, const u8 *bssid)
13908 {
13909 struct sk_buff *msg;
13910 void *hdr;
13911
13912 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13913 if (!msg)
13914 return;
13915
13916 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13917 if (!hdr) {
13918 nlmsg_free(msg);
13919 return;
13920 }
13921
13922 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13923 goto nla_put_failure;
13924
13925 genlmsg_end(msg, hdr);
13926
13927 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13928 NL80211_MCGRP_MLME, GFP_KERNEL);
13929 return;
13930
13931 nla_put_failure:
13932 genlmsg_cancel(msg, hdr);
13933 nlmsg_free(msg);
13934 }
13935
13936 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13937 struct net_device *netdev, u16 reason,
13938 const u8 *ie, size_t ie_len, bool from_ap)
13939 {
13940 struct sk_buff *msg;
13941 void *hdr;
13942
13943 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13944 if (!msg)
13945 return;
13946
13947 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13948 if (!hdr) {
13949 nlmsg_free(msg);
13950 return;
13951 }
13952
13953 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13954 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13955 (from_ap && reason &&
13956 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13957 (from_ap &&
13958 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13959 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13960 goto nla_put_failure;
13961
13962 genlmsg_end(msg, hdr);
13963
13964 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13965 NL80211_MCGRP_MLME, GFP_KERNEL);
13966 return;
13967
13968 nla_put_failure:
13969 genlmsg_cancel(msg, hdr);
13970 nlmsg_free(msg);
13971 }
13972
13973 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13974 struct net_device *netdev, const u8 *bssid,
13975 gfp_t gfp)
13976 {
13977 struct sk_buff *msg;
13978 void *hdr;
13979
13980 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13981 if (!msg)
13982 return;
13983
13984 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13985 if (!hdr) {
13986 nlmsg_free(msg);
13987 return;
13988 }
13989
13990 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13991 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13992 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13993 goto nla_put_failure;
13994
13995 genlmsg_end(msg, hdr);
13996
13997 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13998 NL80211_MCGRP_MLME, gfp);
13999 return;
14000
14001 nla_put_failure:
14002 genlmsg_cancel(msg, hdr);
14003 nlmsg_free(msg);
14004 }
14005
14006 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14007 const u8* ie, u8 ie_len, gfp_t gfp)
14008 {
14009 struct wireless_dev *wdev = dev->ieee80211_ptr;
14010 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14011 struct sk_buff *msg;
14012 void *hdr;
14013
14014 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14015 return;
14016
14017 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14018
14019 msg = nlmsg_new(100 + ie_len, gfp);
14020 if (!msg)
14021 return;
14022
14023 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14024 if (!hdr) {
14025 nlmsg_free(msg);
14026 return;
14027 }
14028
14029 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14030 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14031 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14032 (ie_len && ie &&
14033 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14034 goto nla_put_failure;
14035
14036 genlmsg_end(msg, hdr);
14037
14038 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14039 NL80211_MCGRP_MLME, gfp);
14040 return;
14041
14042 nla_put_failure:
14043 genlmsg_cancel(msg, hdr);
14044 nlmsg_free(msg);
14045 }
14046 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14047
14048 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14049 struct net_device *netdev, const u8 *addr,
14050 enum nl80211_key_type key_type, int key_id,
14051 const u8 *tsc, gfp_t gfp)
14052 {
14053 struct sk_buff *msg;
14054 void *hdr;
14055
14056 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14057 if (!msg)
14058 return;
14059
14060 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14061 if (!hdr) {
14062 nlmsg_free(msg);
14063 return;
14064 }
14065
14066 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14067 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14068 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14069 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14070 (key_id != -1 &&
14071 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14072 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14073 goto nla_put_failure;
14074
14075 genlmsg_end(msg, hdr);
14076
14077 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14078 NL80211_MCGRP_MLME, gfp);
14079 return;
14080
14081 nla_put_failure:
14082 genlmsg_cancel(msg, hdr);
14083 nlmsg_free(msg);
14084 }
14085
14086 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14087 struct ieee80211_channel *channel_before,
14088 struct ieee80211_channel *channel_after)
14089 {
14090 struct sk_buff *msg;
14091 void *hdr;
14092 struct nlattr *nl_freq;
14093
14094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14095 if (!msg)
14096 return;
14097
14098 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14099 if (!hdr) {
14100 nlmsg_free(msg);
14101 return;
14102 }
14103
14104 /*
14105 * Since we are applying the beacon hint to a wiphy we know its
14106 * wiphy_idx is valid
14107 */
14108 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14109 goto nla_put_failure;
14110
14111 /* Before */
14112 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14113 if (!nl_freq)
14114 goto nla_put_failure;
14115 if (nl80211_msg_put_channel(msg, channel_before, false))
14116 goto nla_put_failure;
14117 nla_nest_end(msg, nl_freq);
14118
14119 /* After */
14120 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14121 if (!nl_freq)
14122 goto nla_put_failure;
14123 if (nl80211_msg_put_channel(msg, channel_after, false))
14124 goto nla_put_failure;
14125 nla_nest_end(msg, nl_freq);
14126
14127 genlmsg_end(msg, hdr);
14128
14129 rcu_read_lock();
14130 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14131 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14132 rcu_read_unlock();
14133
14134 return;
14135
14136 nla_put_failure:
14137 genlmsg_cancel(msg, hdr);
14138 nlmsg_free(msg);
14139 }
14140
14141 static void nl80211_send_remain_on_chan_event(
14142 int cmd, struct cfg80211_registered_device *rdev,
14143 struct wireless_dev *wdev, u64 cookie,
14144 struct ieee80211_channel *chan,
14145 unsigned int duration, gfp_t gfp)
14146 {
14147 struct sk_buff *msg;
14148 void *hdr;
14149
14150 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14151 if (!msg)
14152 return;
14153
14154 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14155 if (!hdr) {
14156 nlmsg_free(msg);
14157 return;
14158 }
14159
14160 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14161 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14162 wdev->netdev->ifindex)) ||
14163 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14164 NL80211_ATTR_PAD) ||
14165 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14166 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14167 NL80211_CHAN_NO_HT) ||
14168 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14169 NL80211_ATTR_PAD))
14170 goto nla_put_failure;
14171
14172 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14173 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14174 goto nla_put_failure;
14175
14176 genlmsg_end(msg, hdr);
14177
14178 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14179 NL80211_MCGRP_MLME, gfp);
14180 return;
14181
14182 nla_put_failure:
14183 genlmsg_cancel(msg, hdr);
14184 nlmsg_free(msg);
14185 }
14186
14187 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14188 struct ieee80211_channel *chan,
14189 unsigned int duration, gfp_t gfp)
14190 {
14191 struct wiphy *wiphy = wdev->wiphy;
14192 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14193
14194 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14195 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14196 rdev, wdev, cookie, chan,
14197 duration, gfp);
14198 }
14199 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14200
14201 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14202 struct ieee80211_channel *chan,
14203 gfp_t gfp)
14204 {
14205 struct wiphy *wiphy = wdev->wiphy;
14206 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14207
14208 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14209 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14210 rdev, wdev, cookie, chan, 0, gfp);
14211 }
14212 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14213
14214 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14215 struct station_info *sinfo, gfp_t gfp)
14216 {
14217 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14218 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14219 struct sk_buff *msg;
14220
14221 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14222
14223 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14224 if (!msg)
14225 return;
14226
14227 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14228 rdev, dev, mac_addr, sinfo) < 0) {
14229 nlmsg_free(msg);
14230 return;
14231 }
14232
14233 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14234 NL80211_MCGRP_MLME, gfp);
14235 }
14236 EXPORT_SYMBOL(cfg80211_new_sta);
14237
14238 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14239 struct station_info *sinfo, gfp_t gfp)
14240 {
14241 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14242 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14243 struct sk_buff *msg;
14244 struct station_info empty_sinfo = {};
14245
14246 if (!sinfo)
14247 sinfo = &empty_sinfo;
14248
14249 trace_cfg80211_del_sta(dev, mac_addr);
14250
14251 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14252 if (!msg)
14253 return;
14254
14255 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14256 rdev, dev, mac_addr, sinfo) < 0) {
14257 nlmsg_free(msg);
14258 return;
14259 }
14260
14261 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14262 NL80211_MCGRP_MLME, gfp);
14263 }
14264 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14265
14266 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14267 enum nl80211_connect_failed_reason reason,
14268 gfp_t gfp)
14269 {
14270 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14271 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14272 struct sk_buff *msg;
14273 void *hdr;
14274
14275 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14276 if (!msg)
14277 return;
14278
14279 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14280 if (!hdr) {
14281 nlmsg_free(msg);
14282 return;
14283 }
14284
14285 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14286 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14287 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14288 goto nla_put_failure;
14289
14290 genlmsg_end(msg, hdr);
14291
14292 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14293 NL80211_MCGRP_MLME, gfp);
14294 return;
14295
14296 nla_put_failure:
14297 genlmsg_cancel(msg, hdr);
14298 nlmsg_free(msg);
14299 }
14300 EXPORT_SYMBOL(cfg80211_conn_failed);
14301
14302 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14303 const u8 *addr, gfp_t gfp)
14304 {
14305 struct wireless_dev *wdev = dev->ieee80211_ptr;
14306 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14307 struct sk_buff *msg;
14308 void *hdr;
14309 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14310
14311 if (!nlportid)
14312 return false;
14313
14314 msg = nlmsg_new(100, gfp);
14315 if (!msg)
14316 return true;
14317
14318 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14319 if (!hdr) {
14320 nlmsg_free(msg);
14321 return true;
14322 }
14323
14324 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14325 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14326 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14327 goto nla_put_failure;
14328
14329 genlmsg_end(msg, hdr);
14330 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14331 return true;
14332
14333 nla_put_failure:
14334 genlmsg_cancel(msg, hdr);
14335 nlmsg_free(msg);
14336 return true;
14337 }
14338
14339 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14340 const u8 *addr, gfp_t gfp)
14341 {
14342 struct wireless_dev *wdev = dev->ieee80211_ptr;
14343 bool ret;
14344
14345 trace_cfg80211_rx_spurious_frame(dev, addr);
14346
14347 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14348 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14349 trace_cfg80211_return_bool(false);
14350 return false;
14351 }
14352 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14353 addr, gfp);
14354 trace_cfg80211_return_bool(ret);
14355 return ret;
14356 }
14357 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14358
14359 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14360 const u8 *addr, gfp_t gfp)
14361 {
14362 struct wireless_dev *wdev = dev->ieee80211_ptr;
14363 bool ret;
14364
14365 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14366
14367 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14368 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14369 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14370 trace_cfg80211_return_bool(false);
14371 return false;
14372 }
14373 ret = __nl80211_unexpected_frame(dev,
14374 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14375 addr, gfp);
14376 trace_cfg80211_return_bool(ret);
14377 return ret;
14378 }
14379 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14380
14381 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14382 struct wireless_dev *wdev, u32 nlportid,
14383 int freq, int sig_dbm,
14384 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14385 {
14386 struct net_device *netdev = wdev->netdev;
14387 struct sk_buff *msg;
14388 void *hdr;
14389
14390 msg = nlmsg_new(100 + len, gfp);
14391 if (!msg)
14392 return -ENOMEM;
14393
14394 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14395 if (!hdr) {
14396 nlmsg_free(msg);
14397 return -ENOMEM;
14398 }
14399
14400 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14401 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14402 netdev->ifindex)) ||
14403 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14404 NL80211_ATTR_PAD) ||
14405 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14406 (sig_dbm &&
14407 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14408 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14409 (flags &&
14410 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14411 goto nla_put_failure;
14412
14413 genlmsg_end(msg, hdr);
14414
14415 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14416
14417 nla_put_failure:
14418 genlmsg_cancel(msg, hdr);
14419 nlmsg_free(msg);
14420 return -ENOBUFS;
14421 }
14422
14423 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14424 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14425 {
14426 struct wiphy *wiphy = wdev->wiphy;
14427 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14428 struct net_device *netdev = wdev->netdev;
14429 struct sk_buff *msg;
14430 void *hdr;
14431
14432 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14433
14434 msg = nlmsg_new(100 + len, gfp);
14435 if (!msg)
14436 return;
14437
14438 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14439 if (!hdr) {
14440 nlmsg_free(msg);
14441 return;
14442 }
14443
14444 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14445 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14446 netdev->ifindex)) ||
14447 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14448 NL80211_ATTR_PAD) ||
14449 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14450 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14451 NL80211_ATTR_PAD) ||
14452 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14453 goto nla_put_failure;
14454
14455 genlmsg_end(msg, hdr);
14456
14457 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14458 NL80211_MCGRP_MLME, gfp);
14459 return;
14460
14461 nla_put_failure:
14462 genlmsg_cancel(msg, hdr);
14463 nlmsg_free(msg);
14464 }
14465 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14466
14467 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14468 const char *mac, gfp_t gfp)
14469 {
14470 struct wireless_dev *wdev = dev->ieee80211_ptr;
14471 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14472 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14473 void **cb;
14474
14475 if (!msg)
14476 return NULL;
14477
14478 cb = (void **)msg->cb;
14479
14480 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14481 if (!cb[0]) {
14482 nlmsg_free(msg);
14483 return NULL;
14484 }
14485
14486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14487 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14488 goto nla_put_failure;
14489
14490 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14491 goto nla_put_failure;
14492
14493 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14494 if (!cb[1])
14495 goto nla_put_failure;
14496
14497 cb[2] = rdev;
14498
14499 return msg;
14500 nla_put_failure:
14501 nlmsg_free(msg);
14502 return NULL;
14503 }
14504
14505 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14506 {
14507 void **cb = (void **)msg->cb;
14508 struct cfg80211_registered_device *rdev = cb[2];
14509
14510 nla_nest_end(msg, cb[1]);
14511 genlmsg_end(msg, cb[0]);
14512
14513 memset(msg->cb, 0, sizeof(msg->cb));
14514
14515 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14516 NL80211_MCGRP_MLME, gfp);
14517 }
14518
14519 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14520 enum nl80211_cqm_rssi_threshold_event rssi_event,
14521 s32 rssi_level, gfp_t gfp)
14522 {
14523 struct sk_buff *msg;
14524 struct wireless_dev *wdev = dev->ieee80211_ptr;
14525 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14526
14527 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14528
14529 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14530 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14531 return;
14532
14533 if (wdev->cqm_config) {
14534 wdev->cqm_config->last_rssi_event_value = rssi_level;
14535
14536 cfg80211_cqm_rssi_update(rdev, dev);
14537
14538 if (rssi_level == 0)
14539 rssi_level = wdev->cqm_config->last_rssi_event_value;
14540 }
14541
14542 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14543 if (!msg)
14544 return;
14545
14546 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14547 rssi_event))
14548 goto nla_put_failure;
14549
14550 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14551 rssi_level))
14552 goto nla_put_failure;
14553
14554 cfg80211_send_cqm(msg, gfp);
14555
14556 return;
14557
14558 nla_put_failure:
14559 nlmsg_free(msg);
14560 }
14561 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14562
14563 void cfg80211_cqm_txe_notify(struct net_device *dev,
14564 const u8 *peer, u32 num_packets,
14565 u32 rate, u32 intvl, gfp_t gfp)
14566 {
14567 struct sk_buff *msg;
14568
14569 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14570 if (!msg)
14571 return;
14572
14573 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14574 goto nla_put_failure;
14575
14576 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14577 goto nla_put_failure;
14578
14579 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14580 goto nla_put_failure;
14581
14582 cfg80211_send_cqm(msg, gfp);
14583 return;
14584
14585 nla_put_failure:
14586 nlmsg_free(msg);
14587 }
14588 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14589
14590 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14591 const u8 *peer, u32 num_packets, gfp_t gfp)
14592 {
14593 struct sk_buff *msg;
14594
14595 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14596
14597 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14598 if (!msg)
14599 return;
14600
14601 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14602 goto nla_put_failure;
14603
14604 cfg80211_send_cqm(msg, gfp);
14605 return;
14606
14607 nla_put_failure:
14608 nlmsg_free(msg);
14609 }
14610 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14611
14612 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14613 {
14614 struct sk_buff *msg;
14615
14616 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14617 if (!msg)
14618 return;
14619
14620 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14621 goto nla_put_failure;
14622
14623 cfg80211_send_cqm(msg, gfp);
14624 return;
14625
14626 nla_put_failure:
14627 nlmsg_free(msg);
14628 }
14629 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14630
14631 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14632 struct net_device *netdev, const u8 *bssid,
14633 const u8 *replay_ctr, gfp_t gfp)
14634 {
14635 struct sk_buff *msg;
14636 struct nlattr *rekey_attr;
14637 void *hdr;
14638
14639 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14640 if (!msg)
14641 return;
14642
14643 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14644 if (!hdr) {
14645 nlmsg_free(msg);
14646 return;
14647 }
14648
14649 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14650 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14651 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14652 goto nla_put_failure;
14653
14654 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14655 if (!rekey_attr)
14656 goto nla_put_failure;
14657
14658 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14659 NL80211_REPLAY_CTR_LEN, replay_ctr))
14660 goto nla_put_failure;
14661
14662 nla_nest_end(msg, rekey_attr);
14663
14664 genlmsg_end(msg, hdr);
14665
14666 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14667 NL80211_MCGRP_MLME, gfp);
14668 return;
14669
14670 nla_put_failure:
14671 genlmsg_cancel(msg, hdr);
14672 nlmsg_free(msg);
14673 }
14674
14675 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14676 const u8 *replay_ctr, gfp_t gfp)
14677 {
14678 struct wireless_dev *wdev = dev->ieee80211_ptr;
14679 struct wiphy *wiphy = wdev->wiphy;
14680 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14681
14682 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14683 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14684 }
14685 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14686
14687 static void
14688 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14689 struct net_device *netdev, int index,
14690 const u8 *bssid, bool preauth, gfp_t gfp)
14691 {
14692 struct sk_buff *msg;
14693 struct nlattr *attr;
14694 void *hdr;
14695
14696 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14697 if (!msg)
14698 return;
14699
14700 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14701 if (!hdr) {
14702 nlmsg_free(msg);
14703 return;
14704 }
14705
14706 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14707 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14708 goto nla_put_failure;
14709
14710 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14711 if (!attr)
14712 goto nla_put_failure;
14713
14714 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14715 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14716 (preauth &&
14717 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14718 goto nla_put_failure;
14719
14720 nla_nest_end(msg, attr);
14721
14722 genlmsg_end(msg, hdr);
14723
14724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14725 NL80211_MCGRP_MLME, gfp);
14726 return;
14727
14728 nla_put_failure:
14729 genlmsg_cancel(msg, hdr);
14730 nlmsg_free(msg);
14731 }
14732
14733 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14734 const u8 *bssid, bool preauth, gfp_t gfp)
14735 {
14736 struct wireless_dev *wdev = dev->ieee80211_ptr;
14737 struct wiphy *wiphy = wdev->wiphy;
14738 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14739
14740 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14741 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14742 }
14743 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14744
14745 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14746 struct net_device *netdev,
14747 struct cfg80211_chan_def *chandef,
14748 gfp_t gfp,
14749 enum nl80211_commands notif,
14750 u8 count)
14751 {
14752 struct sk_buff *msg;
14753 void *hdr;
14754
14755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14756 if (!msg)
14757 return;
14758
14759 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14760 if (!hdr) {
14761 nlmsg_free(msg);
14762 return;
14763 }
14764
14765 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14766 goto nla_put_failure;
14767
14768 if (nl80211_send_chandef(msg, chandef))
14769 goto nla_put_failure;
14770
14771 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14772 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14773 goto nla_put_failure;
14774
14775 genlmsg_end(msg, hdr);
14776
14777 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14778 NL80211_MCGRP_MLME, gfp);
14779 return;
14780
14781 nla_put_failure:
14782 genlmsg_cancel(msg, hdr);
14783 nlmsg_free(msg);
14784 }
14785
14786 void cfg80211_ch_switch_notify(struct net_device *dev,
14787 struct cfg80211_chan_def *chandef)
14788 {
14789 struct wireless_dev *wdev = dev->ieee80211_ptr;
14790 struct wiphy *wiphy = wdev->wiphy;
14791 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14792
14793 ASSERT_WDEV_LOCK(wdev);
14794
14795 trace_cfg80211_ch_switch_notify(dev, chandef);
14796
14797 wdev->chandef = *chandef;
14798 wdev->preset_chandef = *chandef;
14799 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14800 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14801 }
14802 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14803
14804 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14805 struct cfg80211_chan_def *chandef,
14806 u8 count)
14807 {
14808 struct wireless_dev *wdev = dev->ieee80211_ptr;
14809 struct wiphy *wiphy = wdev->wiphy;
14810 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14811
14812 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14813
14814 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14815 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14816 }
14817 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14818
14819 void
14820 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14821 const struct cfg80211_chan_def *chandef,
14822 enum nl80211_radar_event event,
14823 struct net_device *netdev, gfp_t gfp)
14824 {
14825 struct sk_buff *msg;
14826 void *hdr;
14827
14828 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14829 if (!msg)
14830 return;
14831
14832 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14833 if (!hdr) {
14834 nlmsg_free(msg);
14835 return;
14836 }
14837
14838 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14839 goto nla_put_failure;
14840
14841 /* NOP and radar events don't need a netdev parameter */
14842 if (netdev) {
14843 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14844
14845 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14846 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14847 NL80211_ATTR_PAD))
14848 goto nla_put_failure;
14849 }
14850
14851 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14852 goto nla_put_failure;
14853
14854 if (nl80211_send_chandef(msg, chandef))
14855 goto nla_put_failure;
14856
14857 genlmsg_end(msg, hdr);
14858
14859 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14860 NL80211_MCGRP_MLME, gfp);
14861 return;
14862
14863 nla_put_failure:
14864 genlmsg_cancel(msg, hdr);
14865 nlmsg_free(msg);
14866 }
14867
14868 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14869 u64 cookie, bool acked, gfp_t gfp)
14870 {
14871 struct wireless_dev *wdev = dev->ieee80211_ptr;
14872 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14873 struct sk_buff *msg;
14874 void *hdr;
14875
14876 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14877
14878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14879
14880 if (!msg)
14881 return;
14882
14883 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14884 if (!hdr) {
14885 nlmsg_free(msg);
14886 return;
14887 }
14888
14889 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14890 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14891 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14892 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14893 NL80211_ATTR_PAD) ||
14894 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14895 goto nla_put_failure;
14896
14897 genlmsg_end(msg, hdr);
14898
14899 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14900 NL80211_MCGRP_MLME, gfp);
14901 return;
14902
14903 nla_put_failure:
14904 genlmsg_cancel(msg, hdr);
14905 nlmsg_free(msg);
14906 }
14907 EXPORT_SYMBOL(cfg80211_probe_status);
14908
14909 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14910 const u8 *frame, size_t len,
14911 int freq, int sig_dbm)
14912 {
14913 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14914 struct sk_buff *msg;
14915 void *hdr;
14916 struct cfg80211_beacon_registration *reg;
14917
14918 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14919
14920 spin_lock_bh(&rdev->beacon_registrations_lock);
14921 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14922 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14923 if (!msg) {
14924 spin_unlock_bh(&rdev->beacon_registrations_lock);
14925 return;
14926 }
14927
14928 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14929 if (!hdr)
14930 goto nla_put_failure;
14931
14932 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14933 (freq &&
14934 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14935 (sig_dbm &&
14936 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14937 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14938 goto nla_put_failure;
14939
14940 genlmsg_end(msg, hdr);
14941
14942 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14943 }
14944 spin_unlock_bh(&rdev->beacon_registrations_lock);
14945 return;
14946
14947 nla_put_failure:
14948 spin_unlock_bh(&rdev->beacon_registrations_lock);
14949 if (hdr)
14950 genlmsg_cancel(msg, hdr);
14951 nlmsg_free(msg);
14952 }
14953 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14954
14955 #ifdef CONFIG_PM
14956 static int cfg80211_net_detect_results(struct sk_buff *msg,
14957 struct cfg80211_wowlan_wakeup *wakeup)
14958 {
14959 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14960 struct nlattr *nl_results, *nl_match, *nl_freqs;
14961 int i, j;
14962
14963 nl_results = nla_nest_start(
14964 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14965 if (!nl_results)
14966 return -EMSGSIZE;
14967
14968 for (i = 0; i < nd->n_matches; i++) {
14969 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14970
14971 nl_match = nla_nest_start(msg, i);
14972 if (!nl_match)
14973 break;
14974
14975 /* The SSID attribute is optional in nl80211, but for
14976 * simplicity reasons it's always present in the
14977 * cfg80211 structure. If a driver can't pass the
14978 * SSID, that needs to be changed. A zero length SSID
14979 * is still a valid SSID (wildcard), so it cannot be
14980 * used for this purpose.
14981 */
14982 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14983 match->ssid.ssid)) {
14984 nla_nest_cancel(msg, nl_match);
14985 goto out;
14986 }
14987
14988 if (match->n_channels) {
14989 nl_freqs = nla_nest_start(
14990 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14991 if (!nl_freqs) {
14992 nla_nest_cancel(msg, nl_match);
14993 goto out;
14994 }
14995
14996 for (j = 0; j < match->n_channels; j++) {
14997 if (nla_put_u32(msg, j, match->channels[j])) {
14998 nla_nest_cancel(msg, nl_freqs);
14999 nla_nest_cancel(msg, nl_match);
15000 goto out;
15001 }
15002 }
15003
15004 nla_nest_end(msg, nl_freqs);
15005 }
15006
15007 nla_nest_end(msg, nl_match);
15008 }
15009
15010 out:
15011 nla_nest_end(msg, nl_results);
15012 return 0;
15013 }
15014
15015 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15016 struct cfg80211_wowlan_wakeup *wakeup,
15017 gfp_t gfp)
15018 {
15019 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15020 struct sk_buff *msg;
15021 void *hdr;
15022 int size = 200;
15023
15024 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15025
15026 if (wakeup)
15027 size += wakeup->packet_present_len;
15028
15029 msg = nlmsg_new(size, gfp);
15030 if (!msg)
15031 return;
15032
15033 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15034 if (!hdr)
15035 goto free_msg;
15036
15037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15038 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15039 NL80211_ATTR_PAD))
15040 goto free_msg;
15041
15042 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15043 wdev->netdev->ifindex))
15044 goto free_msg;
15045
15046 if (wakeup) {
15047 struct nlattr *reasons;
15048
15049 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15050 if (!reasons)
15051 goto free_msg;
15052
15053 if (wakeup->disconnect &&
15054 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15055 goto free_msg;
15056 if (wakeup->magic_pkt &&
15057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15058 goto free_msg;
15059 if (wakeup->gtk_rekey_failure &&
15060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15061 goto free_msg;
15062 if (wakeup->eap_identity_req &&
15063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15064 goto free_msg;
15065 if (wakeup->four_way_handshake &&
15066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15067 goto free_msg;
15068 if (wakeup->rfkill_release &&
15069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15070 goto free_msg;
15071
15072 if (wakeup->pattern_idx >= 0 &&
15073 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15074 wakeup->pattern_idx))
15075 goto free_msg;
15076
15077 if (wakeup->tcp_match &&
15078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15079 goto free_msg;
15080
15081 if (wakeup->tcp_connlost &&
15082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15083 goto free_msg;
15084
15085 if (wakeup->tcp_nomoretokens &&
15086 nla_put_flag(msg,
15087 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15088 goto free_msg;
15089
15090 if (wakeup->packet) {
15091 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15092 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15093
15094 if (!wakeup->packet_80211) {
15095 pkt_attr =
15096 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15097 len_attr =
15098 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15099 }
15100
15101 if (wakeup->packet_len &&
15102 nla_put_u32(msg, len_attr, wakeup->packet_len))
15103 goto free_msg;
15104
15105 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15106 wakeup->packet))
15107 goto free_msg;
15108 }
15109
15110 if (wakeup->net_detect &&
15111 cfg80211_net_detect_results(msg, wakeup))
15112 goto free_msg;
15113
15114 nla_nest_end(msg, reasons);
15115 }
15116
15117 genlmsg_end(msg, hdr);
15118
15119 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15120 NL80211_MCGRP_MLME, gfp);
15121 return;
15122
15123 free_msg:
15124 nlmsg_free(msg);
15125 }
15126 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15127 #endif
15128
15129 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15130 enum nl80211_tdls_operation oper,
15131 u16 reason_code, gfp_t gfp)
15132 {
15133 struct wireless_dev *wdev = dev->ieee80211_ptr;
15134 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15135 struct sk_buff *msg;
15136 void *hdr;
15137
15138 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15139 reason_code);
15140
15141 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15142 if (!msg)
15143 return;
15144
15145 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15146 if (!hdr) {
15147 nlmsg_free(msg);
15148 return;
15149 }
15150
15151 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15152 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15153 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15154 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15155 (reason_code > 0 &&
15156 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15157 goto nla_put_failure;
15158
15159 genlmsg_end(msg, hdr);
15160
15161 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15162 NL80211_MCGRP_MLME, gfp);
15163 return;
15164
15165 nla_put_failure:
15166 genlmsg_cancel(msg, hdr);
15167 nlmsg_free(msg);
15168 }
15169 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15170
15171 static int nl80211_netlink_notify(struct notifier_block * nb,
15172 unsigned long state,
15173 void *_notify)
15174 {
15175 struct netlink_notify *notify = _notify;
15176 struct cfg80211_registered_device *rdev;
15177 struct wireless_dev *wdev;
15178 struct cfg80211_beacon_registration *reg, *tmp;
15179
15180 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15181 return NOTIFY_DONE;
15182
15183 rcu_read_lock();
15184
15185 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15186 struct cfg80211_sched_scan_request *sched_scan_req;
15187
15188 list_for_each_entry_rcu(sched_scan_req,
15189 &rdev->sched_scan_req_list,
15190 list) {
15191 if (sched_scan_req->owner_nlportid == notify->portid) {
15192 sched_scan_req->nl_owner_dead = true;
15193 schedule_work(&rdev->sched_scan_stop_wk);
15194 }
15195 }
15196
15197 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15198 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15199
15200 if (wdev->owner_nlportid == notify->portid) {
15201 wdev->nl_owner_dead = true;
15202 schedule_work(&rdev->destroy_work);
15203 } else if (wdev->conn_owner_nlportid == notify->portid) {
15204 schedule_work(&wdev->disconnect_wk);
15205 }
15206 }
15207
15208 spin_lock_bh(&rdev->beacon_registrations_lock);
15209 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15210 list) {
15211 if (reg->nlportid == notify->portid) {
15212 list_del(&reg->list);
15213 kfree(reg);
15214 break;
15215 }
15216 }
15217 spin_unlock_bh(&rdev->beacon_registrations_lock);
15218 }
15219
15220 rcu_read_unlock();
15221
15222 /*
15223 * It is possible that the user space process that is controlling the
15224 * indoor setting disappeared, so notify the regulatory core.
15225 */
15226 regulatory_netlink_notify(notify->portid);
15227 return NOTIFY_OK;
15228 }
15229
15230 static struct notifier_block nl80211_netlink_notifier = {
15231 .notifier_call = nl80211_netlink_notify,
15232 };
15233
15234 void cfg80211_ft_event(struct net_device *netdev,
15235 struct cfg80211_ft_event_params *ft_event)
15236 {
15237 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15238 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15239 struct sk_buff *msg;
15240 void *hdr;
15241
15242 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15243
15244 if (!ft_event->target_ap)
15245 return;
15246
15247 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15248 if (!msg)
15249 return;
15250
15251 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15252 if (!hdr)
15253 goto out;
15254
15255 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15256 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15257 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15258 goto out;
15259
15260 if (ft_event->ies &&
15261 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15262 goto out;
15263 if (ft_event->ric_ies &&
15264 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15265 ft_event->ric_ies))
15266 goto out;
15267
15268 genlmsg_end(msg, hdr);
15269
15270 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15271 NL80211_MCGRP_MLME, GFP_KERNEL);
15272 return;
15273 out:
15274 nlmsg_free(msg);
15275 }
15276 EXPORT_SYMBOL(cfg80211_ft_event);
15277
15278 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15279 {
15280 struct cfg80211_registered_device *rdev;
15281 struct sk_buff *msg;
15282 void *hdr;
15283 u32 nlportid;
15284
15285 rdev = wiphy_to_rdev(wdev->wiphy);
15286 if (!rdev->crit_proto_nlportid)
15287 return;
15288
15289 nlportid = rdev->crit_proto_nlportid;
15290 rdev->crit_proto_nlportid = 0;
15291
15292 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15293 if (!msg)
15294 return;
15295
15296 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15297 if (!hdr)
15298 goto nla_put_failure;
15299
15300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15301 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15302 NL80211_ATTR_PAD))
15303 goto nla_put_failure;
15304
15305 genlmsg_end(msg, hdr);
15306
15307 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15308 return;
15309
15310 nla_put_failure:
15311 if (hdr)
15312 genlmsg_cancel(msg, hdr);
15313 nlmsg_free(msg);
15314 }
15315 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15316
15317 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15318 {
15319 struct wiphy *wiphy = wdev->wiphy;
15320 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15321 struct sk_buff *msg;
15322 void *hdr;
15323
15324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15325 if (!msg)
15326 return;
15327
15328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15329 if (!hdr)
15330 goto out;
15331
15332 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15333 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15334 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15335 NL80211_ATTR_PAD))
15336 goto out;
15337
15338 genlmsg_end(msg, hdr);
15339
15340 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15341 NL80211_MCGRP_MLME, GFP_KERNEL);
15342 return;
15343 out:
15344 nlmsg_free(msg);
15345 }
15346
15347 /* initialisation/exit functions */
15348
15349 int __init nl80211_init(void)
15350 {
15351 int err;
15352
15353 err = genl_register_family(&nl80211_fam);
15354 if (err)
15355 return err;
15356
15357 err = netlink_register_notifier(&nl80211_netlink_notifier);
15358 if (err)
15359 goto err_out;
15360
15361 return 0;
15362 err_out:
15363 genl_unregister_family(&nl80211_fam);
15364 return err;
15365 }
15366
15367 void nl80211_exit(void)
15368 {
15369 netlink_unregister_notifier(&nl80211_netlink_notifier);
15370 genl_unregister_family(&nl80211_fam);
15371 }
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