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nl80211: relax ht operation checks for mesh
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
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CommitLineData
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
31static 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 */
37static struct genl_family nl80211_fam;
38
39/* multicast groups */
40enum 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
50static 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 */
63static 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
116static 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 */
196static struct cfg80211_registered_device *
197cfg80211_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 */
203static 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 */
427static 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 */
439static const struct nla_policy
440nl80211_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 */
447static const struct nla_policy
448nl80211_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
461static const struct nla_policy
462nl80211_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 */
482static const struct nla_policy
483nl80211_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 */
490static const struct nla_policy
491nl80211_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
497static const struct nla_policy
498nl80211_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
505static const struct nla_policy
506nl80211_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
511static const struct nla_policy
512nl80211_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 */
521static const struct nla_policy
522nl80211_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 */
544static const struct nla_policy
545nl80211_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 */
554static const struct nla_policy
555nl80211_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
561static 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 */
609static 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 */
639static 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
646static 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
730struct 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
738static 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
794static 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
845static 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
885static struct cfg80211_cached_keys *
886nl80211_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
960static 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
989static 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
1002static 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
1021nla_put_failure:
1022 return -ENOBUFS;
1023}
1024
1025static 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;
1093nla_put_failure:
1094 return -ENOBUFS;
1095}
1096
1097#ifdef CONFIG_PM
1098static 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
1138static 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
1196static 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
1217static 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
1273static int
1274nl80211_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
1342static 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
1422struct 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
1429static 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
1916static 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
1950static 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
2023static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2024{
2025 kfree((void *)cb->args[0]);
2026 return 0;
2027}
2028
2029static 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
2049static 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
2057static 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
2079static 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
2103static 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
2177static 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
2238static 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
2246static 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
2269static 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
2524static 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
2530static 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
2560static 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
2651static 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
2725static 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
2744static 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
2753static 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
2776static 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
2839static 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
2865static 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
2931static 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
3047static 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
3068static 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
3085struct get_key_cookie {
3086 struct sk_buff *msg;
3087 int error;
3088 int idx;
3089};
3090
3091static 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
3132static 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
3211static 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
3280static 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
3329static 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 */
3385static 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 */
3405static 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
3450static 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
3475static 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
3500static 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
3529static 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
3552static 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
3563static 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
3589static 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
3598static 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
3701out:
3702 return 0;
3703}
3704
3705static 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
3761static 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
3818static 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 */
3839static 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
3861static 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
3883static 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
3931static 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
4120static 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
4149static 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
4157static 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
4166static 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
4243static 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
4313static 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
4339static 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
4526static 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
4579static 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
4616int 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}
4765EXPORT_SYMBOL(cfg80211_check_station_change);
4766
4767/*
4768 * Get vlan interface making sure it is running and on the right wiphy.
4769 */
4770static 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
4807static const struct nla_policy
4808nl80211_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
4813static 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
4847static 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
4882static 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
4903static 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
5041static 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
5251static 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
5295static 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
5349static 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
5400static 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
5440static 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
5465static 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
5490static 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
5505static 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
5545static 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
5596static 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
5675static 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
5720static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5721{
5722 return reg_reload_regdb();
5723}
5724
5725static 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
5834static 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
5865static 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
5878static 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
5887static 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
5896static 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
5905static 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
5914static 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
5923static 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
5935static 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) \
5944do { \
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 802.11-2016 9.4.2.57 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 /* NON_HT_STA bit is reserved, but some programs set it */
6046 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6047
6048 cfg->ht_opmode = ht_opmode;
6049 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6050 }
6051 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6052 1, 65535, mask,
6053 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6054 nl80211_check_u32);
6055 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6056 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6057 nl80211_check_u16);
6058 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6059 dot11MeshHWMPconfirmationInterval,
6060 1, 65535, mask,
6061 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6062 nl80211_check_u16);
6063 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6064 NL80211_MESH_POWER_ACTIVE,
6065 NL80211_MESH_POWER_MAX,
6066 mask, NL80211_MESHCONF_POWER_MODE,
6067 nl80211_check_power_mode);
6068 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6069 0, 65535, mask,
6070 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6071 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6072 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6073 nl80211_check_u32);
6074 if (mask_out)
6075 *mask_out = mask;
6076
6077 return 0;
6078
6079#undef FILL_IN_MESH_PARAM_IF_SET
6080}
6081
6082static int nl80211_parse_mesh_setup(struct genl_info *info,
6083 struct mesh_setup *setup)
6084{
6085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6086 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6087
6088 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6089 return -EINVAL;
6090 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6091 info->attrs[NL80211_ATTR_MESH_SETUP],
6092 nl80211_mesh_setup_params_policy, info->extack))
6093 return -EINVAL;
6094
6095 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6096 setup->sync_method =
6097 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6098 IEEE80211_SYNC_METHOD_VENDOR :
6099 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6100
6101 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6102 setup->path_sel_proto =
6103 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6104 IEEE80211_PATH_PROTOCOL_VENDOR :
6105 IEEE80211_PATH_PROTOCOL_HWMP;
6106
6107 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6108 setup->path_metric =
6109 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6110 IEEE80211_PATH_METRIC_VENDOR :
6111 IEEE80211_PATH_METRIC_AIRTIME;
6112
6113 if (tb[NL80211_MESH_SETUP_IE]) {
6114 struct nlattr *ieattr =
6115 tb[NL80211_MESH_SETUP_IE];
6116 if (!is_valid_ie_attr(ieattr))
6117 return -EINVAL;
6118 setup->ie = nla_data(ieattr);
6119 setup->ie_len = nla_len(ieattr);
6120 }
6121 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6122 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6123 return -EINVAL;
6124 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6125 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6126 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6127 if (setup->is_secure)
6128 setup->user_mpm = true;
6129
6130 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6131 if (!setup->user_mpm)
6132 return -EINVAL;
6133 setup->auth_id =
6134 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6135 }
6136
6137 return 0;
6138}
6139
6140static int nl80211_update_mesh_config(struct sk_buff *skb,
6141 struct genl_info *info)
6142{
6143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6144 struct net_device *dev = info->user_ptr[1];
6145 struct wireless_dev *wdev = dev->ieee80211_ptr;
6146 struct mesh_config cfg;
6147 u32 mask;
6148 int err;
6149
6150 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6151 return -EOPNOTSUPP;
6152
6153 if (!rdev->ops->update_mesh_config)
6154 return -EOPNOTSUPP;
6155
6156 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6157 if (err)
6158 return err;
6159
6160 wdev_lock(wdev);
6161 if (!wdev->mesh_id_len)
6162 err = -ENOLINK;
6163
6164 if (!err)
6165 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6166
6167 wdev_unlock(wdev);
6168
6169 return err;
6170}
6171
6172static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6173 struct sk_buff *msg)
6174{
6175 struct nlattr *nl_reg_rules;
6176 unsigned int i;
6177
6178 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6179 (regdom->dfs_region &&
6180 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6181 goto nla_put_failure;
6182
6183 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6184 if (!nl_reg_rules)
6185 goto nla_put_failure;
6186
6187 for (i = 0; i < regdom->n_reg_rules; i++) {
6188 struct nlattr *nl_reg_rule;
6189 const struct ieee80211_reg_rule *reg_rule;
6190 const struct ieee80211_freq_range *freq_range;
6191 const struct ieee80211_power_rule *power_rule;
6192 unsigned int max_bandwidth_khz;
6193
6194 reg_rule = &regdom->reg_rules[i];
6195 freq_range = &reg_rule->freq_range;
6196 power_rule = &reg_rule->power_rule;
6197
6198 nl_reg_rule = nla_nest_start(msg, i);
6199 if (!nl_reg_rule)
6200 goto nla_put_failure;
6201
6202 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6203 if (!max_bandwidth_khz)
6204 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6205 reg_rule);
6206
6207 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6208 reg_rule->flags) ||
6209 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6210 freq_range->start_freq_khz) ||
6211 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6212 freq_range->end_freq_khz) ||
6213 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6214 max_bandwidth_khz) ||
6215 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6216 power_rule->max_antenna_gain) ||
6217 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6218 power_rule->max_eirp) ||
6219 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6220 reg_rule->dfs_cac_ms))
6221 goto nla_put_failure;
6222
6223 nla_nest_end(msg, nl_reg_rule);
6224 }
6225
6226 nla_nest_end(msg, nl_reg_rules);
6227 return 0;
6228
6229nla_put_failure:
6230 return -EMSGSIZE;
6231}
6232
6233static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6234{
6235 const struct ieee80211_regdomain *regdom = NULL;
6236 struct cfg80211_registered_device *rdev;
6237 struct wiphy *wiphy = NULL;
6238 struct sk_buff *msg;
6239 void *hdr;
6240
6241 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6242 if (!msg)
6243 return -ENOBUFS;
6244
6245 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6246 NL80211_CMD_GET_REG);
6247 if (!hdr)
6248 goto put_failure;
6249
6250 if (info->attrs[NL80211_ATTR_WIPHY]) {
6251 bool self_managed;
6252
6253 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6254 if (IS_ERR(rdev)) {
6255 nlmsg_free(msg);
6256 return PTR_ERR(rdev);
6257 }
6258
6259 wiphy = &rdev->wiphy;
6260 self_managed = wiphy->regulatory_flags &
6261 REGULATORY_WIPHY_SELF_MANAGED;
6262 regdom = get_wiphy_regdom(wiphy);
6263
6264 /* a self-managed-reg device must have a private regdom */
6265 if (WARN_ON(!regdom && self_managed)) {
6266 nlmsg_free(msg);
6267 return -EINVAL;
6268 }
6269
6270 if (regdom &&
6271 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6272 goto nla_put_failure;
6273 }
6274
6275 if (!wiphy && reg_last_request_cell_base() &&
6276 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6277 NL80211_USER_REG_HINT_CELL_BASE))
6278 goto nla_put_failure;
6279
6280 rcu_read_lock();
6281
6282 if (!regdom)
6283 regdom = rcu_dereference(cfg80211_regdomain);
6284
6285 if (nl80211_put_regdom(regdom, msg))
6286 goto nla_put_failure_rcu;
6287
6288 rcu_read_unlock();
6289
6290 genlmsg_end(msg, hdr);
6291 return genlmsg_reply(msg, info);
6292
6293nla_put_failure_rcu:
6294 rcu_read_unlock();
6295nla_put_failure:
6296 genlmsg_cancel(msg, hdr);
6297put_failure:
6298 nlmsg_free(msg);
6299 return -EMSGSIZE;
6300}
6301
6302static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6303 u32 seq, int flags, struct wiphy *wiphy,
6304 const struct ieee80211_regdomain *regdom)
6305{
6306 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6307 NL80211_CMD_GET_REG);
6308
6309 if (!hdr)
6310 return -1;
6311
6312 genl_dump_check_consistent(cb, hdr);
6313
6314 if (nl80211_put_regdom(regdom, msg))
6315 goto nla_put_failure;
6316
6317 if (!wiphy && reg_last_request_cell_base() &&
6318 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6319 NL80211_USER_REG_HINT_CELL_BASE))
6320 goto nla_put_failure;
6321
6322 if (wiphy &&
6323 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6324 goto nla_put_failure;
6325
6326 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6327 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6328 goto nla_put_failure;
6329
6330 genlmsg_end(msg, hdr);
6331 return 0;
6332
6333nla_put_failure:
6334 genlmsg_cancel(msg, hdr);
6335 return -EMSGSIZE;
6336}
6337
6338static int nl80211_get_reg_dump(struct sk_buff *skb,
6339 struct netlink_callback *cb)
6340{
6341 const struct ieee80211_regdomain *regdom = NULL;
6342 struct cfg80211_registered_device *rdev;
6343 int err, reg_idx, start = cb->args[2];
6344
6345 rtnl_lock();
6346
6347 if (cfg80211_regdomain && start == 0) {
6348 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6349 NLM_F_MULTI, NULL,
6350 rtnl_dereference(cfg80211_regdomain));
6351 if (err < 0)
6352 goto out_err;
6353 }
6354
6355 /* the global regdom is idx 0 */
6356 reg_idx = 1;
6357 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6358 regdom = get_wiphy_regdom(&rdev->wiphy);
6359 if (!regdom)
6360 continue;
6361
6362 if (++reg_idx <= start)
6363 continue;
6364
6365 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6366 NLM_F_MULTI, &rdev->wiphy, regdom);
6367 if (err < 0) {
6368 reg_idx--;
6369 break;
6370 }
6371 }
6372
6373 cb->args[2] = reg_idx;
6374 err = skb->len;
6375out_err:
6376 rtnl_unlock();
6377 return err;
6378}
6379
6380#ifdef CONFIG_CFG80211_CRDA_SUPPORT
6381static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6382 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6383 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6384 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6385 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6386 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6387 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6388 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6389};
6390
6391static int parse_reg_rule(struct nlattr *tb[],
6392 struct ieee80211_reg_rule *reg_rule)
6393{
6394 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6395 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6396
6397 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6398 return -EINVAL;
6399 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6400 return -EINVAL;
6401 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6402 return -EINVAL;
6403 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6404 return -EINVAL;
6405 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6406 return -EINVAL;
6407
6408 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6409
6410 freq_range->start_freq_khz =
6411 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6412 freq_range->end_freq_khz =
6413 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6414 freq_range->max_bandwidth_khz =
6415 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6416
6417 power_rule->max_eirp =
6418 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6419
6420 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6421 power_rule->max_antenna_gain =
6422 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6423
6424 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6425 reg_rule->dfs_cac_ms =
6426 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6427
6428 return 0;
6429}
6430
6431static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6432{
6433 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6434 struct nlattr *nl_reg_rule;
6435 char *alpha2;
6436 int rem_reg_rules, r;
6437 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6438 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6439 struct ieee80211_regdomain *rd;
6440
6441 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6442 return -EINVAL;
6443
6444 if (!info->attrs[NL80211_ATTR_REG_RULES])
6445 return -EINVAL;
6446
6447 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6448
6449 if (info->attrs[NL80211_ATTR_DFS_REGION])
6450 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6451
6452 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6453 rem_reg_rules) {
6454 num_rules++;
6455 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6456 return -EINVAL;
6457 }
6458
6459 if (!reg_is_valid_request(alpha2))
6460 return -EINVAL;
6461
6462 size_of_regd = sizeof(struct ieee80211_regdomain) +
6463 num_rules * sizeof(struct ieee80211_reg_rule);
6464
6465 rd = kzalloc(size_of_regd, GFP_KERNEL);
6466 if (!rd)
6467 return -ENOMEM;
6468
6469 rd->n_reg_rules = num_rules;
6470 rd->alpha2[0] = alpha2[0];
6471 rd->alpha2[1] = alpha2[1];
6472
6473 /*
6474 * Disable DFS master mode if the DFS region was
6475 * not supported or known on this kernel.
6476 */
6477 if (reg_supported_dfs_region(dfs_region))
6478 rd->dfs_region = dfs_region;
6479
6480 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6481 rem_reg_rules) {
6482 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6483 nl_reg_rule, reg_rule_policy,
6484 info->extack);
6485 if (r)
6486 goto bad_reg;
6487 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6488 if (r)
6489 goto bad_reg;
6490
6491 rule_idx++;
6492
6493 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6494 r = -EINVAL;
6495 goto bad_reg;
6496 }
6497 }
6498
6499 /* set_regdom takes ownership of rd */
6500 return set_regdom(rd, REGD_SOURCE_CRDA);
6501 bad_reg:
6502 kfree(rd);
6503 return r;
6504}
6505#endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6506
6507static int validate_scan_freqs(struct nlattr *freqs)
6508{
6509 struct nlattr *attr1, *attr2;
6510 int n_channels = 0, tmp1, tmp2;
6511
6512 nla_for_each_nested(attr1, freqs, tmp1)
6513 if (nla_len(attr1) != sizeof(u32))
6514 return 0;
6515
6516 nla_for_each_nested(attr1, freqs, tmp1) {
6517 n_channels++;
6518 /*
6519 * Some hardware has a limited channel list for
6520 * scanning, and it is pretty much nonsensical
6521 * to scan for a channel twice, so disallow that
6522 * and don't require drivers to check that the
6523 * channel list they get isn't longer than what
6524 * they can scan, as long as they can scan all
6525 * the channels they registered at once.
6526 */
6527 nla_for_each_nested(attr2, freqs, tmp2)
6528 if (attr1 != attr2 &&
6529 nla_get_u32(attr1) == nla_get_u32(attr2))
6530 return 0;
6531 }
6532
6533 return n_channels;
6534}
6535
6536static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6537{
6538 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6539}
6540
6541static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6542 struct cfg80211_bss_selection *bss_select)
6543{
6544 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6545 struct nlattr *nest;
6546 int err;
6547 bool found = false;
6548 int i;
6549
6550 /* only process one nested attribute */
6551 nest = nla_data(nla);
6552 if (!nla_ok(nest, nla_len(nest)))
6553 return -EINVAL;
6554
6555 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6556 nl80211_bss_select_policy, NULL);
6557 if (err)
6558 return err;
6559
6560 /* only one attribute may be given */
6561 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6562 if (attr[i]) {
6563 if (found)
6564 return -EINVAL;
6565 found = true;
6566 }
6567 }
6568
6569 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6570
6571 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6572 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6573
6574 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6575 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6576 bss_select->param.band_pref =
6577 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6578 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6579 return -EINVAL;
6580 }
6581
6582 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6583 struct nl80211_bss_select_rssi_adjust *adj_param;
6584
6585 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6586 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6587 bss_select->param.adjust.band = adj_param->band;
6588 bss_select->param.adjust.delta = adj_param->delta;
6589 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6590 return -EINVAL;
6591 }
6592
6593 /* user-space did not provide behaviour attribute */
6594 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6595 return -EINVAL;
6596
6597 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6598 return -EINVAL;
6599
6600 return 0;
6601}
6602
6603static int nl80211_parse_random_mac(struct nlattr **attrs,
6604 u8 *mac_addr, u8 *mac_addr_mask)
6605{
6606 int i;
6607
6608 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6609 eth_zero_addr(mac_addr);
6610 eth_zero_addr(mac_addr_mask);
6611 mac_addr[0] = 0x2;
6612 mac_addr_mask[0] = 0x3;
6613
6614 return 0;
6615 }
6616
6617 /* need both or none */
6618 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6619 return -EINVAL;
6620
6621 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6622 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6623
6624 /* don't allow or configure an mcast address */
6625 if (!is_multicast_ether_addr(mac_addr_mask) ||
6626 is_multicast_ether_addr(mac_addr))
6627 return -EINVAL;
6628
6629 /*
6630 * allow users to pass a MAC address that has bits set outside
6631 * of the mask, but don't bother drivers with having to deal
6632 * with such bits
6633 */
6634 for (i = 0; i < ETH_ALEN; i++)
6635 mac_addr[i] &= mac_addr_mask[i];
6636
6637 return 0;
6638}
6639
6640static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6641{
6642 ASSERT_WDEV_LOCK(wdev);
6643
6644 if (!cfg80211_beaconing_iface_active(wdev))
6645 return true;
6646
6647 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6648 return true;
6649
6650 return regulatory_pre_cac_allowed(wdev->wiphy);
6651}
6652
6653static int
6654nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6655 void *request, struct nlattr **attrs,
6656 bool is_sched_scan)
6657{
6658 u8 *mac_addr, *mac_addr_mask;
6659 u32 *flags;
6660 enum nl80211_feature_flags randomness_flag;
6661
6662 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6663 return 0;
6664
6665 if (is_sched_scan) {
6666 struct cfg80211_sched_scan_request *req = request;
6667
6668 randomness_flag = wdev ?
6669 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6670 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6671 flags = &req->flags;
6672 mac_addr = req->mac_addr;
6673 mac_addr_mask = req->mac_addr_mask;
6674 } else {
6675 struct cfg80211_scan_request *req = request;
6676
6677 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6678 flags = &req->flags;
6679 mac_addr = req->mac_addr;
6680 mac_addr_mask = req->mac_addr_mask;
6681 }
6682
6683 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6684
6685 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6686 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6687 return -EOPNOTSUPP;
6688
6689 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6690 int err;
6691
6692 if (!(wiphy->features & randomness_flag) ||
6693 (wdev && wdev->current_bss))
6694 return -EOPNOTSUPP;
6695
6696 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6697 if (err)
6698 return err;
6699 }
6700
6701 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6702 !wiphy_ext_feature_isset(wiphy,
6703 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6704 return -EOPNOTSUPP;
6705
6706 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6707 !wiphy_ext_feature_isset(wiphy,
6708 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6709 return -EOPNOTSUPP;
6710
6711 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6712 !wiphy_ext_feature_isset(wiphy,
6713 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6714 return -EOPNOTSUPP;
6715
6716 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6717 !wiphy_ext_feature_isset(wiphy,
6718 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6719 return -EOPNOTSUPP;
6720
6721 return 0;
6722}
6723
6724static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6725{
6726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6727 struct wireless_dev *wdev = info->user_ptr[1];
6728 struct cfg80211_scan_request *request;
6729 struct nlattr *attr;
6730 struct wiphy *wiphy;
6731 int err, tmp, n_ssids = 0, n_channels, i;
6732 size_t ie_len;
6733
6734 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6735 return -EINVAL;
6736
6737 wiphy = &rdev->wiphy;
6738
6739 if (wdev->iftype == NL80211_IFTYPE_NAN)
6740 return -EOPNOTSUPP;
6741
6742 if (!rdev->ops->scan)
6743 return -EOPNOTSUPP;
6744
6745 if (rdev->scan_req || rdev->scan_msg) {
6746 err = -EBUSY;
6747 goto unlock;
6748 }
6749
6750 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6751 n_channels = validate_scan_freqs(
6752 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6753 if (!n_channels) {
6754 err = -EINVAL;
6755 goto unlock;
6756 }
6757 } else {
6758 n_channels = ieee80211_get_num_supported_channels(wiphy);
6759 }
6760
6761 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6762 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6763 n_ssids++;
6764
6765 if (n_ssids > wiphy->max_scan_ssids) {
6766 err = -EINVAL;
6767 goto unlock;
6768 }
6769
6770 if (info->attrs[NL80211_ATTR_IE])
6771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6772 else
6773 ie_len = 0;
6774
6775 if (ie_len > wiphy->max_scan_ie_len) {
6776 err = -EINVAL;
6777 goto unlock;
6778 }
6779
6780 request = kzalloc(sizeof(*request)
6781 + sizeof(*request->ssids) * n_ssids
6782 + sizeof(*request->channels) * n_channels
6783 + ie_len, GFP_KERNEL);
6784 if (!request) {
6785 err = -ENOMEM;
6786 goto unlock;
6787 }
6788
6789 if (n_ssids)
6790 request->ssids = (void *)&request->channels[n_channels];
6791 request->n_ssids = n_ssids;
6792 if (ie_len) {
6793 if (n_ssids)
6794 request->ie = (void *)(request->ssids + n_ssids);
6795 else
6796 request->ie = (void *)(request->channels + n_channels);
6797 }
6798
6799 i = 0;
6800 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6801 /* user specified, bail out if channel not found */
6802 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6803 struct ieee80211_channel *chan;
6804
6805 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6806
6807 if (!chan) {
6808 err = -EINVAL;
6809 goto out_free;
6810 }
6811
6812 /* ignore disabled channels */
6813 if (chan->flags & IEEE80211_CHAN_DISABLED)
6814 continue;
6815
6816 request->channels[i] = chan;
6817 i++;
6818 }
6819 } else {
6820 enum nl80211_band band;
6821
6822 /* all channels */
6823 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6824 int j;
6825
6826 if (!wiphy->bands[band])
6827 continue;
6828 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6829 struct ieee80211_channel *chan;
6830
6831 chan = &wiphy->bands[band]->channels[j];
6832
6833 if (chan->flags & IEEE80211_CHAN_DISABLED)
6834 continue;
6835
6836 request->channels[i] = chan;
6837 i++;
6838 }
6839 }
6840 }
6841
6842 if (!i) {
6843 err = -EINVAL;
6844 goto out_free;
6845 }
6846
6847 request->n_channels = i;
6848
6849 wdev_lock(wdev);
6850 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6851 struct ieee80211_channel *chan;
6852
6853 if (request->n_channels != 1) {
6854 wdev_unlock(wdev);
6855 err = -EBUSY;
6856 goto out_free;
6857 }
6858
6859 chan = request->channels[0];
6860 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6861 wdev_unlock(wdev);
6862 err = -EBUSY;
6863 goto out_free;
6864 }
6865 }
6866 wdev_unlock(wdev);
6867
6868 i = 0;
6869 if (n_ssids) {
6870 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6871 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6872 err = -EINVAL;
6873 goto out_free;
6874 }
6875 request->ssids[i].ssid_len = nla_len(attr);
6876 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6877 i++;
6878 }
6879 }
6880
6881 if (info->attrs[NL80211_ATTR_IE]) {
6882 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6883 memcpy((void *)request->ie,
6884 nla_data(info->attrs[NL80211_ATTR_IE]),
6885 request->ie_len);
6886 }
6887
6888 for (i = 0; i < NUM_NL80211_BANDS; i++)
6889 if (wiphy->bands[i])
6890 request->rates[i] =
6891 (1 << wiphy->bands[i]->n_bitrates) - 1;
6892
6893 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6894 nla_for_each_nested(attr,
6895 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6896 tmp) {
6897 enum nl80211_band band = nla_type(attr);
6898
6899 if (band < 0 || band >= NUM_NL80211_BANDS) {
6900 err = -EINVAL;
6901 goto out_free;
6902 }
6903
6904 if (!wiphy->bands[band])
6905 continue;
6906
6907 err = ieee80211_get_ratemask(wiphy->bands[band],
6908 nla_data(attr),
6909 nla_len(attr),
6910 &request->rates[band]);
6911 if (err)
6912 goto out_free;
6913 }
6914 }
6915
6916 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6917 if (!wiphy_ext_feature_isset(wiphy,
6918 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6919 err = -EOPNOTSUPP;
6920 goto out_free;
6921 }
6922
6923 request->duration =
6924 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6925 request->duration_mandatory =
6926 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6927 }
6928
6929 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6930 false);
6931 if (err)
6932 goto out_free;
6933
6934 request->no_cck =
6935 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6936
6937 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6938 * BSSID to scan for. This was problematic because that same attribute
6939 * was already used for another purpose (local random MAC address). The
6940 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6941 * compatibility with older userspace components, also use the
6942 * NL80211_ATTR_MAC value here if it can be determined to be used for
6943 * the specific BSSID use case instead of the random MAC address
6944 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6945 */
6946 if (info->attrs[NL80211_ATTR_BSSID])
6947 memcpy(request->bssid,
6948 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6949 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6950 info->attrs[NL80211_ATTR_MAC])
6951 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6952 ETH_ALEN);
6953 else
6954 eth_broadcast_addr(request->bssid);
6955
6956 request->wdev = wdev;
6957 request->wiphy = &rdev->wiphy;
6958 request->scan_start = jiffies;
6959
6960 rdev->scan_req = request;
6961 err = rdev_scan(rdev, request);
6962
6963 if (!err) {
6964 nl80211_send_scan_start(rdev, wdev);
6965 if (wdev->netdev)
6966 dev_hold(wdev->netdev);
6967 } else {
6968 out_free:
6969 rdev->scan_req = NULL;
6970 kfree(request);
6971 }
6972
6973 unlock:
6974 return err;
6975}
6976
6977static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6978{
6979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6980 struct wireless_dev *wdev = info->user_ptr[1];
6981
6982 if (!rdev->ops->abort_scan)
6983 return -EOPNOTSUPP;
6984
6985 if (rdev->scan_msg)
6986 return 0;
6987
6988 if (!rdev->scan_req)
6989 return -ENOENT;
6990
6991 rdev_abort_scan(rdev, wdev);
6992 return 0;
6993}
6994
6995static int
6996nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6997 struct cfg80211_sched_scan_request *request,
6998 struct nlattr **attrs)
6999{
7000 int tmp, err, i = 0;
7001 struct nlattr *attr;
7002
7003 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7004 u32 interval;
7005
7006 /*
7007 * If scan plans are not specified,
7008 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7009 * case one scan plan will be set with the specified scan
7010 * interval and infinite number of iterations.
7011 */
7012 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7013 if (!interval)
7014 return -EINVAL;
7015
7016 request->scan_plans[0].interval =
7017 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7018 if (!request->scan_plans[0].interval)
7019 return -EINVAL;
7020
7021 if (request->scan_plans[0].interval >
7022 wiphy->max_sched_scan_plan_interval)
7023 request->scan_plans[0].interval =
7024 wiphy->max_sched_scan_plan_interval;
7025
7026 return 0;
7027 }
7028
7029 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7030 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7031
7032 if (WARN_ON(i >= n_plans))
7033 return -EINVAL;
7034
7035 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7036 attr, nl80211_plan_policy, NULL);
7037 if (err)
7038 return err;
7039
7040 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7041 return -EINVAL;
7042
7043 request->scan_plans[i].interval =
7044 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7045 if (!request->scan_plans[i].interval ||
7046 request->scan_plans[i].interval >
7047 wiphy->max_sched_scan_plan_interval)
7048 return -EINVAL;
7049
7050 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7051 request->scan_plans[i].iterations =
7052 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7053 if (!request->scan_plans[i].iterations ||
7054 (request->scan_plans[i].iterations >
7055 wiphy->max_sched_scan_plan_iterations))
7056 return -EINVAL;
7057 } else if (i < n_plans - 1) {
7058 /*
7059 * All scan plans but the last one must specify
7060 * a finite number of iterations
7061 */
7062 return -EINVAL;
7063 }
7064
7065 i++;
7066 }
7067
7068 /*
7069 * The last scan plan must not specify the number of
7070 * iterations, it is supposed to run infinitely
7071 */
7072 if (request->scan_plans[n_plans - 1].iterations)
7073 return -EINVAL;
7074
7075 return 0;
7076}
7077
7078static struct cfg80211_sched_scan_request *
7079nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7080 struct nlattr **attrs, int max_match_sets)
7081{
7082 struct cfg80211_sched_scan_request *request;
7083 struct nlattr *attr;
7084 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7085 enum nl80211_band band;
7086 size_t ie_len;
7087 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7088 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7089
7090 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7091 return ERR_PTR(-EINVAL);
7092
7093 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7094 n_channels = validate_scan_freqs(
7095 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7096 if (!n_channels)
7097 return ERR_PTR(-EINVAL);
7098 } else {
7099 n_channels = ieee80211_get_num_supported_channels(wiphy);
7100 }
7101
7102 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7103 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7104 tmp)
7105 n_ssids++;
7106
7107 if (n_ssids > wiphy->max_sched_scan_ssids)
7108 return ERR_PTR(-EINVAL);
7109
7110 /*
7111 * First, count the number of 'real' matchsets. Due to an issue with
7112 * the old implementation, matchsets containing only the RSSI attribute
7113 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7114 * RSSI for all matchsets, rather than their own matchset for reporting
7115 * all APs with a strong RSSI. This is needed to be compatible with
7116 * older userspace that treated a matchset with only the RSSI as the
7117 * global RSSI for all other matchsets - if there are other matchsets.
7118 */
7119 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7120 nla_for_each_nested(attr,
7121 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7122 tmp) {
7123 struct nlattr *rssi;
7124
7125 err = nla_parse_nested(tb,
7126 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7127 attr, nl80211_match_policy,
7128 NULL);
7129 if (err)
7130 return ERR_PTR(err);
7131
7132 /* SSID and BSSID are mutually exclusive */
7133 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7134 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7135 return ERR_PTR(-EINVAL);
7136
7137 /* add other standalone attributes here */
7138 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7139 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7140 n_match_sets++;
7141 continue;
7142 }
7143 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7144 if (rssi)
7145 default_match_rssi = nla_get_s32(rssi);
7146 }
7147 }
7148
7149 /* However, if there's no other matchset, add the RSSI one */
7150 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7151 n_match_sets = 1;
7152
7153 if (n_match_sets > max_match_sets)
7154 return ERR_PTR(-EINVAL);
7155
7156 if (attrs[NL80211_ATTR_IE])
7157 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7158 else
7159 ie_len = 0;
7160
7161 if (ie_len > wiphy->max_sched_scan_ie_len)
7162 return ERR_PTR(-EINVAL);
7163
7164 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7165 /*
7166 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7167 * each scan plan already specifies its own interval
7168 */
7169 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7170 return ERR_PTR(-EINVAL);
7171
7172 nla_for_each_nested(attr,
7173 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7174 n_plans++;
7175 } else {
7176 /*
7177 * The scan interval attribute is kept for backward
7178 * compatibility. If no scan plans are specified and sched scan
7179 * interval is specified, one scan plan will be set with this
7180 * scan interval and infinite number of iterations.
7181 */
7182 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7183 return ERR_PTR(-EINVAL);
7184
7185 n_plans = 1;
7186 }
7187
7188 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7189 return ERR_PTR(-EINVAL);
7190
7191 if (!wiphy_ext_feature_isset(
7192 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7193 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7194 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7195 return ERR_PTR(-EINVAL);
7196
7197 request = kzalloc(sizeof(*request)
7198 + sizeof(*request->ssids) * n_ssids
7199 + sizeof(*request->match_sets) * n_match_sets
7200 + sizeof(*request->scan_plans) * n_plans
7201 + sizeof(*request->channels) * n_channels
7202 + ie_len, GFP_KERNEL);
7203 if (!request)
7204 return ERR_PTR(-ENOMEM);
7205
7206 if (n_ssids)
7207 request->ssids = (void *)&request->channels[n_channels];
7208 request->n_ssids = n_ssids;
7209 if (ie_len) {
7210 if (n_ssids)
7211 request->ie = (void *)(request->ssids + n_ssids);
7212 else
7213 request->ie = (void *)(request->channels + n_channels);
7214 }
7215
7216 if (n_match_sets) {
7217 if (request->ie)
7218 request->match_sets = (void *)(request->ie + ie_len);
7219 else if (n_ssids)
7220 request->match_sets =
7221 (void *)(request->ssids + n_ssids);
7222 else
7223 request->match_sets =
7224 (void *)(request->channels + n_channels);
7225 }
7226 request->n_match_sets = n_match_sets;
7227
7228 if (n_match_sets)
7229 request->scan_plans = (void *)(request->match_sets +
7230 n_match_sets);
7231 else if (request->ie)
7232 request->scan_plans = (void *)(request->ie + ie_len);
7233 else if (n_ssids)
7234 request->scan_plans = (void *)(request->ssids + n_ssids);
7235 else
7236 request->scan_plans = (void *)(request->channels + n_channels);
7237
7238 request->n_scan_plans = n_plans;
7239
7240 i = 0;
7241 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7242 /* user specified, bail out if channel not found */
7243 nla_for_each_nested(attr,
7244 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7245 tmp) {
7246 struct ieee80211_channel *chan;
7247
7248 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7249
7250 if (!chan) {
7251 err = -EINVAL;
7252 goto out_free;
7253 }
7254
7255 /* ignore disabled channels */
7256 if (chan->flags & IEEE80211_CHAN_DISABLED)
7257 continue;
7258
7259 request->channels[i] = chan;
7260 i++;
7261 }
7262 } else {
7263 /* all channels */
7264 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7265 int j;
7266
7267 if (!wiphy->bands[band])
7268 continue;
7269 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7270 struct ieee80211_channel *chan;
7271
7272 chan = &wiphy->bands[band]->channels[j];
7273
7274 if (chan->flags & IEEE80211_CHAN_DISABLED)
7275 continue;
7276
7277 request->channels[i] = chan;
7278 i++;
7279 }
7280 }
7281 }
7282
7283 if (!i) {
7284 err = -EINVAL;
7285 goto out_free;
7286 }
7287
7288 request->n_channels = i;
7289
7290 i = 0;
7291 if (n_ssids) {
7292 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7293 tmp) {
7294 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7295 err = -EINVAL;
7296 goto out_free;
7297 }
7298 request->ssids[i].ssid_len = nla_len(attr);
7299 memcpy(request->ssids[i].ssid, nla_data(attr),
7300 nla_len(attr));
7301 i++;
7302 }
7303 }
7304
7305 i = 0;
7306 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7307 nla_for_each_nested(attr,
7308 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7309 tmp) {
7310 struct nlattr *ssid, *bssid, *rssi;
7311
7312 err = nla_parse_nested(tb,
7313 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7314 attr, nl80211_match_policy,
7315 NULL);
7316 if (err)
7317 goto out_free;
7318 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7319 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7320 if (ssid || bssid) {
7321 if (WARN_ON(i >= n_match_sets)) {
7322 /* this indicates a programming error,
7323 * the loop above should have verified
7324 * things properly
7325 */
7326 err = -EINVAL;
7327 goto out_free;
7328 }
7329
7330 if (ssid) {
7331 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7332 err = -EINVAL;
7333 goto out_free;
7334 }
7335 memcpy(request->match_sets[i].ssid.ssid,
7336 nla_data(ssid), nla_len(ssid));
7337 request->match_sets[i].ssid.ssid_len =
7338 nla_len(ssid);
7339 }
7340 if (bssid) {
7341 if (nla_len(bssid) != ETH_ALEN) {
7342 err = -EINVAL;
7343 goto out_free;
7344 }
7345 memcpy(request->match_sets[i].bssid,
7346 nla_data(bssid), ETH_ALEN);
7347 }
7348
7349 /* special attribute - old implementation w/a */
7350 request->match_sets[i].rssi_thold =
7351 default_match_rssi;
7352 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7353 if (rssi)
7354 request->match_sets[i].rssi_thold =
7355 nla_get_s32(rssi);
7356 }
7357 i++;
7358 }
7359
7360 /* there was no other matchset, so the RSSI one is alone */
7361 if (i == 0 && n_match_sets)
7362 request->match_sets[0].rssi_thold = default_match_rssi;
7363
7364 request->min_rssi_thold = INT_MAX;
7365 for (i = 0; i < n_match_sets; i++)
7366 request->min_rssi_thold =
7367 min(request->match_sets[i].rssi_thold,
7368 request->min_rssi_thold);
7369 } else {
7370 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7371 }
7372
7373 if (ie_len) {
7374 request->ie_len = ie_len;
7375 memcpy((void *)request->ie,
7376 nla_data(attrs[NL80211_ATTR_IE]),
7377 request->ie_len);
7378 }
7379
7380 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7381 if (err)
7382 goto out_free;
7383
7384 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7385 request->delay =
7386 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7387
7388 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7389 request->relative_rssi = nla_get_s8(
7390 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7391 request->relative_rssi_set = true;
7392 }
7393
7394 if (request->relative_rssi_set &&
7395 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7396 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7397
7398 rssi_adjust = nla_data(
7399 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7400 request->rssi_adjust.band = rssi_adjust->band;
7401 request->rssi_adjust.delta = rssi_adjust->delta;
7402 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7403 err = -EINVAL;
7404 goto out_free;
7405 }
7406 }
7407
7408 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7409 if (err)
7410 goto out_free;
7411
7412 request->scan_start = jiffies;
7413
7414 return request;
7415
7416out_free:
7417 kfree(request);
7418 return ERR_PTR(err);
7419}
7420
7421static int nl80211_start_sched_scan(struct sk_buff *skb,
7422 struct genl_info *info)
7423{
7424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7425 struct net_device *dev = info->user_ptr[1];
7426 struct wireless_dev *wdev = dev->ieee80211_ptr;
7427 struct cfg80211_sched_scan_request *sched_scan_req;
7428 bool want_multi;
7429 int err;
7430
7431 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7432 return -EOPNOTSUPP;
7433
7434 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7435 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7436 if (err)
7437 return err;
7438
7439 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7440 info->attrs,
7441 rdev->wiphy.max_match_sets);
7442
7443 err = PTR_ERR_OR_ZERO(sched_scan_req);
7444 if (err)
7445 goto out_err;
7446
7447 /* leave request id zero for legacy request
7448 * or if driver does not support multi-scheduled scan
7449 */
7450 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7451 while (!sched_scan_req->reqid)
7452 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7453 }
7454
7455 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7456 if (err)
7457 goto out_free;
7458
7459 sched_scan_req->dev = dev;
7460 sched_scan_req->wiphy = &rdev->wiphy;
7461
7462 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7463 sched_scan_req->owner_nlportid = info->snd_portid;
7464
7465 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7466
7467 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7468 return 0;
7469
7470out_free:
7471 kfree(sched_scan_req);
7472out_err:
7473 return err;
7474}
7475
7476static int nl80211_stop_sched_scan(struct sk_buff *skb,
7477 struct genl_info *info)
7478{
7479 struct cfg80211_sched_scan_request *req;
7480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7481 u64 cookie;
7482
7483 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7484 return -EOPNOTSUPP;
7485
7486 if (info->attrs[NL80211_ATTR_COOKIE]) {
7487 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7488 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7489 }
7490
7491 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7492 struct cfg80211_sched_scan_request,
7493 list);
7494 if (!req || req->reqid ||
7495 (req->owner_nlportid &&
7496 req->owner_nlportid != info->snd_portid))
7497 return -ENOENT;
7498
7499 return cfg80211_stop_sched_scan_req(rdev, req, false);
7500}
7501
7502static int nl80211_start_radar_detection(struct sk_buff *skb,
7503 struct genl_info *info)
7504{
7505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7506 struct net_device *dev = info->user_ptr[1];
7507 struct wireless_dev *wdev = dev->ieee80211_ptr;
7508 struct cfg80211_chan_def chandef;
7509 enum nl80211_dfs_regions dfs_region;
7510 unsigned int cac_time_ms;
7511 int err;
7512
7513 dfs_region = reg_get_dfs_region(wdev->wiphy);
7514 if (dfs_region == NL80211_DFS_UNSET)
7515 return -EINVAL;
7516
7517 err = nl80211_parse_chandef(rdev, info, &chandef);
7518 if (err)
7519 return err;
7520
7521 if (netif_carrier_ok(dev))
7522 return -EBUSY;
7523
7524 if (wdev->cac_started)
7525 return -EBUSY;
7526
7527 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7528 wdev->iftype);
7529 if (err < 0)
7530 return err;
7531
7532 if (err == 0)
7533 return -EINVAL;
7534
7535 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7536 return -EINVAL;
7537
7538 if (!rdev->ops->start_radar_detection)
7539 return -EOPNOTSUPP;
7540
7541 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7542 if (WARN_ON(!cac_time_ms))
7543 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7544
7545 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7546 if (!err) {
7547 wdev->chandef = chandef;
7548 wdev->cac_started = true;
7549 wdev->cac_start_time = jiffies;
7550 wdev->cac_time_ms = cac_time_ms;
7551 }
7552 return err;
7553}
7554
7555static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7556{
7557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7558 struct net_device *dev = info->user_ptr[1];
7559 struct wireless_dev *wdev = dev->ieee80211_ptr;
7560 struct cfg80211_csa_settings params;
7561 /* csa_attrs is defined static to avoid waste of stack size - this
7562 * function is called under RTNL lock, so this should not be a problem.
7563 */
7564 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7565 int err;
7566 bool need_new_beacon = false;
7567 bool need_handle_dfs_flag = true;
7568 int len, i;
7569 u32 cs_count;
7570
7571 if (!rdev->ops->channel_switch ||
7572 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7573 return -EOPNOTSUPP;
7574
7575 switch (dev->ieee80211_ptr->iftype) {
7576 case NL80211_IFTYPE_AP:
7577 case NL80211_IFTYPE_P2P_GO:
7578 need_new_beacon = true;
7579 /* For all modes except AP the handle_dfs flag needs to be
7580 * supplied to tell the kernel that userspace will handle radar
7581 * events when they happen. Otherwise a switch to a channel
7582 * requiring DFS will be rejected.
7583 */
7584 need_handle_dfs_flag = false;
7585
7586 /* useless if AP is not running */
7587 if (!wdev->beacon_interval)
7588 return -ENOTCONN;
7589 break;
7590 case NL80211_IFTYPE_ADHOC:
7591 if (!wdev->ssid_len)
7592 return -ENOTCONN;
7593 break;
7594 case NL80211_IFTYPE_MESH_POINT:
7595 if (!wdev->mesh_id_len)
7596 return -ENOTCONN;
7597 break;
7598 default:
7599 return -EOPNOTSUPP;
7600 }
7601
7602 memset(&params, 0, sizeof(params));
7603
7604 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7605 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7606 return -EINVAL;
7607
7608 /* only important for AP, IBSS and mesh create IEs internally */
7609 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7610 return -EINVAL;
7611
7612 /* Even though the attribute is u32, the specification says
7613 * u8, so let's make sure we don't overflow.
7614 */
7615 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7616 if (cs_count > 255)
7617 return -EINVAL;
7618
7619 params.count = cs_count;
7620
7621 if (!need_new_beacon)
7622 goto skip_beacons;
7623
7624 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7625 if (err)
7626 return err;
7627
7628 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7629 info->attrs[NL80211_ATTR_CSA_IES],
7630 nl80211_policy, info->extack);
7631 if (err)
7632 return err;
7633
7634 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7635 if (err)
7636 return err;
7637
7638 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7639 return -EINVAL;
7640
7641 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7642 if (!len || (len % sizeof(u16)))
7643 return -EINVAL;
7644
7645 params.n_counter_offsets_beacon = len / sizeof(u16);
7646 if (rdev->wiphy.max_num_csa_counters &&
7647 (params.n_counter_offsets_beacon >
7648 rdev->wiphy.max_num_csa_counters))
7649 return -EINVAL;
7650
7651 params.counter_offsets_beacon =
7652 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7653
7654 /* sanity checks - counters should fit and be the same */
7655 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7656 u16 offset = params.counter_offsets_beacon[i];
7657
7658 if (offset >= params.beacon_csa.tail_len)
7659 return -EINVAL;
7660
7661 if (params.beacon_csa.tail[offset] != params.count)
7662 return -EINVAL;
7663 }
7664
7665 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7666 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7667 if (!len || (len % sizeof(u16)))
7668 return -EINVAL;
7669
7670 params.n_counter_offsets_presp = len / sizeof(u16);
7671 if (rdev->wiphy.max_num_csa_counters &&
7672 (params.n_counter_offsets_presp >
7673 rdev->wiphy.max_num_csa_counters))
7674 return -EINVAL;
7675
7676 params.counter_offsets_presp =
7677 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7678
7679 /* sanity checks - counters should fit and be the same */
7680 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7681 u16 offset = params.counter_offsets_presp[i];
7682
7683 if (offset >= params.beacon_csa.probe_resp_len)
7684 return -EINVAL;
7685
7686 if (params.beacon_csa.probe_resp[offset] !=
7687 params.count)
7688 return -EINVAL;
7689 }
7690 }
7691
7692skip_beacons:
7693 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7694 if (err)
7695 return err;
7696
7697 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7698 wdev->iftype))
7699 return -EINVAL;
7700
7701 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7702 &params.chandef,
7703 wdev->iftype);
7704 if (err < 0)
7705 return err;
7706
7707 if (err > 0) {
7708 params.radar_required = true;
7709 if (need_handle_dfs_flag &&
7710 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7711 return -EINVAL;
7712 }
7713 }
7714
7715 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7716 params.block_tx = true;
7717
7718 wdev_lock(wdev);
7719 err = rdev_channel_switch(rdev, dev, &params);
7720 wdev_unlock(wdev);
7721
7722 return err;
7723}
7724
7725static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7726 u32 seq, int flags,
7727 struct cfg80211_registered_device *rdev,
7728 struct wireless_dev *wdev,
7729 struct cfg80211_internal_bss *intbss)
7730{
7731 struct cfg80211_bss *res = &intbss->pub;
7732 const struct cfg80211_bss_ies *ies;
7733 void *hdr;
7734 struct nlattr *bss;
7735
7736 ASSERT_WDEV_LOCK(wdev);
7737
7738 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7739 NL80211_CMD_NEW_SCAN_RESULTS);
7740 if (!hdr)
7741 return -1;
7742
7743 genl_dump_check_consistent(cb, hdr);
7744
7745 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7746 goto nla_put_failure;
7747 if (wdev->netdev &&
7748 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7749 goto nla_put_failure;
7750 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7751 NL80211_ATTR_PAD))
7752 goto nla_put_failure;
7753
7754 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7755 if (!bss)
7756 goto nla_put_failure;
7757 if ((!is_zero_ether_addr(res->bssid) &&
7758 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7759 goto nla_put_failure;
7760
7761 rcu_read_lock();
7762 /* indicate whether we have probe response data or not */
7763 if (rcu_access_pointer(res->proberesp_ies) &&
7764 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7765 goto fail_unlock_rcu;
7766
7767 /* this pointer prefers to be pointed to probe response data
7768 * but is always valid
7769 */
7770 ies = rcu_dereference(res->ies);
7771 if (ies) {
7772 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7773 NL80211_BSS_PAD))
7774 goto fail_unlock_rcu;
7775 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7776 ies->len, ies->data))
7777 goto fail_unlock_rcu;
7778 }
7779
7780 /* and this pointer is always (unless driver didn't know) beacon data */
7781 ies = rcu_dereference(res->beacon_ies);
7782 if (ies && ies->from_beacon) {
7783 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7784 NL80211_BSS_PAD))
7785 goto fail_unlock_rcu;
7786 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7787 ies->len, ies->data))
7788 goto fail_unlock_rcu;
7789 }
7790 rcu_read_unlock();
7791
7792 if (res->beacon_interval &&
7793 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7794 goto nla_put_failure;
7795 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7796 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7797 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7798 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7799 jiffies_to_msecs(jiffies - intbss->ts)))
7800 goto nla_put_failure;
7801
7802 if (intbss->parent_tsf &&
7803 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7804 intbss->parent_tsf, NL80211_BSS_PAD) ||
7805 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7806 intbss->parent_bssid)))
7807 goto nla_put_failure;
7808
7809 if (intbss->ts_boottime &&
7810 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7811 intbss->ts_boottime, NL80211_BSS_PAD))
7812 goto nla_put_failure;
7813
7814 switch (rdev->wiphy.signal_type) {
7815 case CFG80211_SIGNAL_TYPE_MBM:
7816 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7817 goto nla_put_failure;
7818 break;
7819 case CFG80211_SIGNAL_TYPE_UNSPEC:
7820 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7821 goto nla_put_failure;
7822 break;
7823 default:
7824 break;
7825 }
7826
7827 switch (wdev->iftype) {
7828 case NL80211_IFTYPE_P2P_CLIENT:
7829 case NL80211_IFTYPE_STATION:
7830 if (intbss == wdev->current_bss &&
7831 nla_put_u32(msg, NL80211_BSS_STATUS,
7832 NL80211_BSS_STATUS_ASSOCIATED))
7833 goto nla_put_failure;
7834 break;
7835 case NL80211_IFTYPE_ADHOC:
7836 if (intbss == wdev->current_bss &&
7837 nla_put_u32(msg, NL80211_BSS_STATUS,
7838 NL80211_BSS_STATUS_IBSS_JOINED))
7839 goto nla_put_failure;
7840 break;
7841 default:
7842 break;
7843 }
7844
7845 nla_nest_end(msg, bss);
7846
7847 genlmsg_end(msg, hdr);
7848 return 0;
7849
7850 fail_unlock_rcu:
7851 rcu_read_unlock();
7852 nla_put_failure:
7853 genlmsg_cancel(msg, hdr);
7854 return -EMSGSIZE;
7855}
7856
7857static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7858{
7859 struct cfg80211_registered_device *rdev;
7860 struct cfg80211_internal_bss *scan;
7861 struct wireless_dev *wdev;
7862 int start = cb->args[2], idx = 0;
7863 int err;
7864
7865 rtnl_lock();
7866 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7867 if (err) {
7868 rtnl_unlock();
7869 return err;
7870 }
7871
7872 wdev_lock(wdev);
7873 spin_lock_bh(&rdev->bss_lock);
7874 cfg80211_bss_expire(rdev);
7875
7876 cb->seq = rdev->bss_generation;
7877
7878 list_for_each_entry(scan, &rdev->bss_list, list) {
7879 if (++idx <= start)
7880 continue;
7881 if (nl80211_send_bss(skb, cb,
7882 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7883 rdev, wdev, scan) < 0) {
7884 idx--;
7885 break;
7886 }
7887 }
7888
7889 spin_unlock_bh(&rdev->bss_lock);
7890 wdev_unlock(wdev);
7891
7892 cb->args[2] = idx;
7893 rtnl_unlock();
7894
7895 return skb->len;
7896}
7897
7898static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7899 int flags, struct net_device *dev,
7900 bool allow_radio_stats,
7901 struct survey_info *survey)
7902{
7903 void *hdr;
7904 struct nlattr *infoattr;
7905
7906 /* skip radio stats if userspace didn't request them */
7907 if (!survey->channel && !allow_radio_stats)
7908 return 0;
7909
7910 hdr = nl80211hdr_put(msg, portid, seq, flags,
7911 NL80211_CMD_NEW_SURVEY_RESULTS);
7912 if (!hdr)
7913 return -ENOMEM;
7914
7915 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7916 goto nla_put_failure;
7917
7918 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7919 if (!infoattr)
7920 goto nla_put_failure;
7921
7922 if (survey->channel &&
7923 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7924 survey->channel->center_freq))
7925 goto nla_put_failure;
7926
7927 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7928 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7929 goto nla_put_failure;
7930 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7931 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7932 goto nla_put_failure;
7933 if ((survey->filled & SURVEY_INFO_TIME) &&
7934 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7935 survey->time, NL80211_SURVEY_INFO_PAD))
7936 goto nla_put_failure;
7937 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7938 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7939 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7940 goto nla_put_failure;
7941 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7942 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7943 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7944 goto nla_put_failure;
7945 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7946 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7947 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7948 goto nla_put_failure;
7949 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7950 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7951 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7952 goto nla_put_failure;
7953 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7954 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7955 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7956 goto nla_put_failure;
7957
7958 nla_nest_end(msg, infoattr);
7959
7960 genlmsg_end(msg, hdr);
7961 return 0;
7962
7963 nla_put_failure:
7964 genlmsg_cancel(msg, hdr);
7965 return -EMSGSIZE;
7966}
7967
7968static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7969{
7970 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7971 struct survey_info survey;
7972 struct cfg80211_registered_device *rdev;
7973 struct wireless_dev *wdev;
7974 int survey_idx = cb->args[2];
7975 int res;
7976 bool radio_stats;
7977
7978 rtnl_lock();
7979 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7980 if (res)
7981 goto out_err;
7982
7983 /* prepare_wdev_dump parsed the attributes */
7984 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7985
7986 if (!wdev->netdev) {
7987 res = -EINVAL;
7988 goto out_err;
7989 }
7990
7991 if (!rdev->ops->dump_survey) {
7992 res = -EOPNOTSUPP;
7993 goto out_err;
7994 }
7995
7996 while (1) {
7997 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7998 if (res == -ENOENT)
7999 break;
8000 if (res)
8001 goto out_err;
8002
8003 /* don't send disabled channels, but do send non-channel data */
8004 if (survey.channel &&
8005 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8006 survey_idx++;
8007 continue;
8008 }
8009
8010 if (nl80211_send_survey(skb,
8011 NETLINK_CB(cb->skb).portid,
8012 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8013 wdev->netdev, radio_stats, &survey) < 0)
8014 goto out;
8015 survey_idx++;
8016 }
8017
8018 out:
8019 cb->args[2] = survey_idx;
8020 res = skb->len;
8021 out_err:
8022 rtnl_unlock();
8023 return res;
8024}
8025
8026static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8027{
8028 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8029 NL80211_WPA_VERSION_2));
8030}
8031
8032static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8033{
8034 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8035 struct net_device *dev = info->user_ptr[1];
8036 struct ieee80211_channel *chan;
8037 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8038 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8039 enum nl80211_auth_type auth_type;
8040 struct key_parse key;
8041 bool local_state_change;
8042
8043 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8044 return -EINVAL;
8045
8046 if (!info->attrs[NL80211_ATTR_MAC])
8047 return -EINVAL;
8048
8049 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8050 return -EINVAL;
8051
8052 if (!info->attrs[NL80211_ATTR_SSID])
8053 return -EINVAL;
8054
8055 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8056 return -EINVAL;
8057
8058 err = nl80211_parse_key(info, &key);
8059 if (err)
8060 return err;
8061
8062 if (key.idx >= 0) {
8063 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8064 return -EINVAL;
8065 if (!key.p.key || !key.p.key_len)
8066 return -EINVAL;
8067 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8068 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8069 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8070 key.p.key_len != WLAN_KEY_LEN_WEP104))
8071 return -EINVAL;
8072 if (key.idx > 3)
8073 return -EINVAL;
8074 } else {
8075 key.p.key_len = 0;
8076 key.p.key = NULL;
8077 }
8078
8079 if (key.idx >= 0) {
8080 int i;
8081 bool ok = false;
8082
8083 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8084 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8085 ok = true;
8086 break;
8087 }
8088 }
8089 if (!ok)
8090 return -EINVAL;
8091 }
8092
8093 if (!rdev->ops->auth)
8094 return -EOPNOTSUPP;
8095
8096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8098 return -EOPNOTSUPP;
8099
8100 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8101 chan = nl80211_get_valid_chan(&rdev->wiphy,
8102 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8103 if (!chan)
8104 return -EINVAL;
8105
8106 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8107 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8108
8109 if (info->attrs[NL80211_ATTR_IE]) {
8110 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8111 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8112 }
8113
8114 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8115 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8116 return -EINVAL;
8117
8118 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8119 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8120 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8121 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8122 !info->attrs[NL80211_ATTR_AUTH_DATA])
8123 return -EINVAL;
8124
8125 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8126 if (auth_type != NL80211_AUTHTYPE_SAE &&
8127 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8128 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8129 auth_type != NL80211_AUTHTYPE_FILS_PK)
8130 return -EINVAL;
8131 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8132 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8133 /* need to include at least Auth Transaction and Status Code */
8134 if (auth_data_len < 4)
8135 return -EINVAL;
8136 }
8137
8138 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8139
8140 /*
8141 * Since we no longer track auth state, ignore
8142 * requests to only change local state.
8143 */
8144 if (local_state_change)
8145 return 0;
8146
8147 wdev_lock(dev->ieee80211_ptr);
8148 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8149 ssid, ssid_len, ie, ie_len,
8150 key.p.key, key.p.key_len, key.idx,
8151 auth_data, auth_data_len);
8152 wdev_unlock(dev->ieee80211_ptr);
8153 return err;
8154}
8155
8156static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8157 struct genl_info *info,
8158 struct cfg80211_crypto_settings *settings,
8159 int cipher_limit)
8160{
8161 memset(settings, 0, sizeof(*settings));
8162
8163 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8164
8165 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8166 u16 proto;
8167
8168 proto = nla_get_u16(
8169 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8170 settings->control_port_ethertype = cpu_to_be16(proto);
8171 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8172 proto != ETH_P_PAE)
8173 return -EINVAL;
8174 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8175 settings->control_port_no_encrypt = true;
8176 } else
8177 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8178
8179 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8180 void *data;
8181 int len, i;
8182
8183 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8184 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8185 settings->n_ciphers_pairwise = len / sizeof(u32);
8186
8187 if (len % sizeof(u32))
8188 return -EINVAL;
8189
8190 if (settings->n_ciphers_pairwise > cipher_limit)
8191 return -EINVAL;
8192
8193 memcpy(settings->ciphers_pairwise, data, len);
8194
8195 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8196 if (!cfg80211_supported_cipher_suite(
8197 &rdev->wiphy,
8198 settings->ciphers_pairwise[i]))
8199 return -EINVAL;
8200 }
8201
8202 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8203 settings->cipher_group =
8204 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8205 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8206 settings->cipher_group))
8207 return -EINVAL;
8208 }
8209
8210 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8211 settings->wpa_versions =
8212 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8213 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8214 return -EINVAL;
8215 }
8216
8217 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8218 void *data;
8219 int len;
8220
8221 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8222 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8223 settings->n_akm_suites = len / sizeof(u32);
8224
8225 if (len % sizeof(u32))
8226 return -EINVAL;
8227
8228 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8229 return -EINVAL;
8230
8231 memcpy(settings->akm_suites, data, len);
8232 }
8233
8234 if (info->attrs[NL80211_ATTR_PMK]) {
8235 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8236 return -EINVAL;
8237 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8238 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8239 return -EINVAL;
8240 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8241 }
8242
8243 return 0;
8244}
8245
8246static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8247{
8248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8249 struct net_device *dev = info->user_ptr[1];
8250 struct ieee80211_channel *chan;
8251 struct cfg80211_assoc_request req = {};
8252 const u8 *bssid, *ssid;
8253 int err, ssid_len = 0;
8254
8255 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8256 return -EINVAL;
8257
8258 if (!info->attrs[NL80211_ATTR_MAC] ||
8259 !info->attrs[NL80211_ATTR_SSID] ||
8260 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8261 return -EINVAL;
8262
8263 if (!rdev->ops->assoc)
8264 return -EOPNOTSUPP;
8265
8266 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8267 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8268 return -EOPNOTSUPP;
8269
8270 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8271
8272 chan = nl80211_get_valid_chan(&rdev->wiphy,
8273 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8274 if (!chan)
8275 return -EINVAL;
8276
8277 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8278 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8279
8280 if (info->attrs[NL80211_ATTR_IE]) {
8281 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8282 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8283 }
8284
8285 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8286 enum nl80211_mfp mfp =
8287 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8288 if (mfp == NL80211_MFP_REQUIRED)
8289 req.use_mfp = true;
8290 else if (mfp != NL80211_MFP_NO)
8291 return -EINVAL;
8292 }
8293
8294 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8295 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8296
8297 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8298 req.flags |= ASSOC_REQ_DISABLE_HT;
8299
8300 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8301 memcpy(&req.ht_capa_mask,
8302 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8303 sizeof(req.ht_capa_mask));
8304
8305 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8306 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8307 return -EINVAL;
8308 memcpy(&req.ht_capa,
8309 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8310 sizeof(req.ht_capa));
8311 }
8312
8313 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8314 req.flags |= ASSOC_REQ_DISABLE_VHT;
8315
8316 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8317 memcpy(&req.vht_capa_mask,
8318 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8319 sizeof(req.vht_capa_mask));
8320
8321 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8322 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8323 return -EINVAL;
8324 memcpy(&req.vht_capa,
8325 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8326 sizeof(req.vht_capa));
8327 }
8328
8329 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8330 if (!((rdev->wiphy.features &
8331 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8332 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8333 !wiphy_ext_feature_isset(&rdev->wiphy,
8334 NL80211_EXT_FEATURE_RRM))
8335 return -EINVAL;
8336 req.flags |= ASSOC_REQ_USE_RRM;
8337 }
8338
8339 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8340 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8341 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8342 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8343 return -EINVAL;
8344 req.fils_nonces =
8345 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8346 }
8347
8348 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8349 if (!err) {
8350 wdev_lock(dev->ieee80211_ptr);
8351
8352 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8353 ssid, ssid_len, &req);
8354
8355 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8356 dev->ieee80211_ptr->conn_owner_nlportid =
8357 info->snd_portid;
8358 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8359 bssid, ETH_ALEN);
8360 }
8361
8362 wdev_unlock(dev->ieee80211_ptr);
8363 }
8364
8365 return err;
8366}
8367
8368static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8369{
8370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8371 struct net_device *dev = info->user_ptr[1];
8372 const u8 *ie = NULL, *bssid;
8373 int ie_len = 0, err;
8374 u16 reason_code;
8375 bool local_state_change;
8376
8377 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8378 return -EINVAL;
8379
8380 if (!info->attrs[NL80211_ATTR_MAC])
8381 return -EINVAL;
8382
8383 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8384 return -EINVAL;
8385
8386 if (!rdev->ops->deauth)
8387 return -EOPNOTSUPP;
8388
8389 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8390 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8391 return -EOPNOTSUPP;
8392
8393 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8394
8395 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8396 if (reason_code == 0) {
8397 /* Reason Code 0 is reserved */
8398 return -EINVAL;
8399 }
8400
8401 if (info->attrs[NL80211_ATTR_IE]) {
8402 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8403 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8404 }
8405
8406 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8407
8408 wdev_lock(dev->ieee80211_ptr);
8409 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8410 local_state_change);
8411 wdev_unlock(dev->ieee80211_ptr);
8412 return err;
8413}
8414
8415static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8416{
8417 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8418 struct net_device *dev = info->user_ptr[1];
8419 const u8 *ie = NULL, *bssid;
8420 int ie_len = 0, err;
8421 u16 reason_code;
8422 bool local_state_change;
8423
8424 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8425 return -EINVAL;
8426
8427 if (!info->attrs[NL80211_ATTR_MAC])
8428 return -EINVAL;
8429
8430 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8431 return -EINVAL;
8432
8433 if (!rdev->ops->disassoc)
8434 return -EOPNOTSUPP;
8435
8436 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8437 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8438 return -EOPNOTSUPP;
8439
8440 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8441
8442 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8443 if (reason_code == 0) {
8444 /* Reason Code 0 is reserved */
8445 return -EINVAL;
8446 }
8447
8448 if (info->attrs[NL80211_ATTR_IE]) {
8449 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8450 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8451 }
8452
8453 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8454
8455 wdev_lock(dev->ieee80211_ptr);
8456 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8457 local_state_change);
8458 wdev_unlock(dev->ieee80211_ptr);
8459 return err;
8460}
8461
8462static bool
8463nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8464 int mcast_rate[NUM_NL80211_BANDS],
8465 int rateval)
8466{
8467 struct wiphy *wiphy = &rdev->wiphy;
8468 bool found = false;
8469 int band, i;
8470
8471 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8472 struct ieee80211_supported_band *sband;
8473
8474 sband = wiphy->bands[band];
8475 if (!sband)
8476 continue;
8477
8478 for (i = 0; i < sband->n_bitrates; i++) {
8479 if (sband->bitrates[i].bitrate == rateval) {
8480 mcast_rate[band] = i + 1;
8481 found = true;
8482 break;
8483 }
8484 }
8485 }
8486
8487 return found;
8488}
8489
8490static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8491{
8492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8493 struct net_device *dev = info->user_ptr[1];
8494 struct cfg80211_ibss_params ibss;
8495 struct wiphy *wiphy;
8496 struct cfg80211_cached_keys *connkeys = NULL;
8497 int err;
8498
8499 memset(&ibss, 0, sizeof(ibss));
8500
8501 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8502 return -EINVAL;
8503
8504 if (!info->attrs[NL80211_ATTR_SSID] ||
8505 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8506 return -EINVAL;
8507
8508 ibss.beacon_interval = 100;
8509
8510 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8511 ibss.beacon_interval =
8512 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8513
8514 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8515 ibss.beacon_interval);
8516 if (err)
8517 return err;
8518
8519 if (!rdev->ops->join_ibss)
8520 return -EOPNOTSUPP;
8521
8522 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8523 return -EOPNOTSUPP;
8524
8525 wiphy = &rdev->wiphy;
8526
8527 if (info->attrs[NL80211_ATTR_MAC]) {
8528 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8529
8530 if (!is_valid_ether_addr(ibss.bssid))
8531 return -EINVAL;
8532 }
8533 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8534 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8535
8536 if (info->attrs[NL80211_ATTR_IE]) {
8537 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8538 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8539 }
8540
8541 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8542 if (err)
8543 return err;
8544
8545 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8546 NL80211_IFTYPE_ADHOC))
8547 return -EINVAL;
8548
8549 switch (ibss.chandef.width) {
8550 case NL80211_CHAN_WIDTH_5:
8551 case NL80211_CHAN_WIDTH_10:
8552 case NL80211_CHAN_WIDTH_20_NOHT:
8553 break;
8554 case NL80211_CHAN_WIDTH_20:
8555 case NL80211_CHAN_WIDTH_40:
8556 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8557 return -EINVAL;
8558 break;
8559 case NL80211_CHAN_WIDTH_80:
8560 case NL80211_CHAN_WIDTH_80P80:
8561 case NL80211_CHAN_WIDTH_160:
8562 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8563 return -EINVAL;
8564 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8565 NL80211_EXT_FEATURE_VHT_IBSS))
8566 return -EINVAL;
8567 break;
8568 default:
8569 return -EINVAL;
8570 }
8571
8572 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8573 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8574
8575 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8576 u8 *rates =
8577 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8578 int n_rates =
8579 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8580 struct ieee80211_supported_band *sband =
8581 wiphy->bands[ibss.chandef.chan->band];
8582
8583 err = ieee80211_get_ratemask(sband, rates, n_rates,
8584 &ibss.basic_rates);
8585 if (err)
8586 return err;
8587 }
8588
8589 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8590 memcpy(&ibss.ht_capa_mask,
8591 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8592 sizeof(ibss.ht_capa_mask));
8593
8594 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8595 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8596 return -EINVAL;
8597 memcpy(&ibss.ht_capa,
8598 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8599 sizeof(ibss.ht_capa));
8600 }
8601
8602 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8603 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8604 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8605 return -EINVAL;
8606
8607 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8608 bool no_ht = false;
8609
8610 connkeys = nl80211_parse_connkeys(rdev,
8611 info->attrs[NL80211_ATTR_KEYS],
8612 &no_ht);
8613 if (IS_ERR(connkeys))
8614 return PTR_ERR(connkeys);
8615
8616 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8617 no_ht) {
8618 kzfree(connkeys);
8619 return -EINVAL;
8620 }
8621 }
8622
8623 ibss.control_port =
8624 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8625
8626 ibss.userspace_handles_dfs =
8627 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8628
8629 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8630 if (err)
8631 kzfree(connkeys);
8632 return err;
8633}
8634
8635static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8636{
8637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8638 struct net_device *dev = info->user_ptr[1];
8639
8640 if (!rdev->ops->leave_ibss)
8641 return -EOPNOTSUPP;
8642
8643 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8644 return -EOPNOTSUPP;
8645
8646 return cfg80211_leave_ibss(rdev, dev, false);
8647}
8648
8649static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8650{
8651 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8652 struct net_device *dev = info->user_ptr[1];
8653 int mcast_rate[NUM_NL80211_BANDS];
8654 u32 nla_rate;
8655 int err;
8656
8657 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8658 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8659 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8660 return -EOPNOTSUPP;
8661
8662 if (!rdev->ops->set_mcast_rate)
8663 return -EOPNOTSUPP;
8664
8665 memset(mcast_rate, 0, sizeof(mcast_rate));
8666
8667 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8668 return -EINVAL;
8669
8670 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8671 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8672 return -EINVAL;
8673
8674 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8675
8676 return err;
8677}
8678
8679static struct sk_buff *
8680__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8681 struct wireless_dev *wdev, int approxlen,
8682 u32 portid, u32 seq, enum nl80211_commands cmd,
8683 enum nl80211_attrs attr,
8684 const struct nl80211_vendor_cmd_info *info,
8685 gfp_t gfp)
8686{
8687 struct sk_buff *skb;
8688 void *hdr;
8689 struct nlattr *data;
8690
8691 skb = nlmsg_new(approxlen + 100, gfp);
8692 if (!skb)
8693 return NULL;
8694
8695 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8696 if (!hdr) {
8697 kfree_skb(skb);
8698 return NULL;
8699 }
8700
8701 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8702 goto nla_put_failure;
8703
8704 if (info) {
8705 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8706 info->vendor_id))
8707 goto nla_put_failure;
8708 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8709 info->subcmd))
8710 goto nla_put_failure;
8711 }
8712
8713 if (wdev) {
8714 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8715 wdev_id(wdev), NL80211_ATTR_PAD))
8716 goto nla_put_failure;
8717 if (wdev->netdev &&
8718 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8719 wdev->netdev->ifindex))
8720 goto nla_put_failure;
8721 }
8722
8723 data = nla_nest_start(skb, attr);
8724 if (!data)
8725 goto nla_put_failure;
8726
8727 ((void **)skb->cb)[0] = rdev;
8728 ((void **)skb->cb)[1] = hdr;
8729 ((void **)skb->cb)[2] = data;
8730
8731 return skb;
8732
8733 nla_put_failure:
8734 kfree_skb(skb);
8735 return NULL;
8736}
8737
8738struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8739 struct wireless_dev *wdev,
8740 enum nl80211_commands cmd,
8741 enum nl80211_attrs attr,
8742 int vendor_event_idx,
8743 int approxlen, gfp_t gfp)
8744{
8745 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8746 const struct nl80211_vendor_cmd_info *info;
8747
8748 switch (cmd) {
8749 case NL80211_CMD_TESTMODE:
8750 if (WARN_ON(vendor_event_idx != -1))
8751 return NULL;
8752 info = NULL;
8753 break;
8754 case NL80211_CMD_VENDOR:
8755 if (WARN_ON(vendor_event_idx < 0 ||
8756 vendor_event_idx >= wiphy->n_vendor_events))
8757 return NULL;
8758 info = &wiphy->vendor_events[vendor_event_idx];
8759 break;
8760 default:
8761 WARN_ON(1);
8762 return NULL;
8763 }
8764
8765 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8766 cmd, attr, info, gfp);
8767}
8768EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8769
8770void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8771{
8772 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8773 void *hdr = ((void **)skb->cb)[1];
8774 struct nlattr *data = ((void **)skb->cb)[2];
8775 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8776
8777 /* clear CB data for netlink core to own from now on */
8778 memset(skb->cb, 0, sizeof(skb->cb));
8779
8780 nla_nest_end(skb, data);
8781 genlmsg_end(skb, hdr);
8782
8783 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8784 mcgrp = NL80211_MCGRP_VENDOR;
8785
8786 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8787 mcgrp, gfp);
8788}
8789EXPORT_SYMBOL(__cfg80211_send_event_skb);
8790
8791#ifdef CONFIG_NL80211_TESTMODE
8792static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8793{
8794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8795 struct wireless_dev *wdev =
8796 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8797 int err;
8798
8799 if (!rdev->ops->testmode_cmd)
8800 return -EOPNOTSUPP;
8801
8802 if (IS_ERR(wdev)) {
8803 err = PTR_ERR(wdev);
8804 if (err != -EINVAL)
8805 return err;
8806 wdev = NULL;
8807 } else if (wdev->wiphy != &rdev->wiphy) {
8808 return -EINVAL;
8809 }
8810
8811 if (!info->attrs[NL80211_ATTR_TESTDATA])
8812 return -EINVAL;
8813
8814 rdev->cur_cmd_info = info;
8815 err = rdev_testmode_cmd(rdev, wdev,
8816 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8817 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8818 rdev->cur_cmd_info = NULL;
8819
8820 return err;
8821}
8822
8823static int nl80211_testmode_dump(struct sk_buff *skb,
8824 struct netlink_callback *cb)
8825{
8826 struct cfg80211_registered_device *rdev;
8827 int err;
8828 long phy_idx;
8829 void *data = NULL;
8830 int data_len = 0;
8831
8832 rtnl_lock();
8833
8834 if (cb->args[0]) {
8835 /*
8836 * 0 is a valid index, but not valid for args[0],
8837 * so we need to offset by 1.
8838 */
8839 phy_idx = cb->args[0] - 1;
8840
8841 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8842 if (!rdev) {
8843 err = -ENOENT;
8844 goto out_err;
8845 }
8846 } else {
8847 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8848
8849 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8850 attrbuf, nl80211_fam.maxattr,
8851 nl80211_policy, NULL);
8852 if (err)
8853 goto out_err;
8854
8855 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8856 if (IS_ERR(rdev)) {
8857 err = PTR_ERR(rdev);
8858 goto out_err;
8859 }
8860 phy_idx = rdev->wiphy_idx;
8861
8862 if (attrbuf[NL80211_ATTR_TESTDATA])
8863 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8864 }
8865
8866 if (cb->args[1]) {
8867 data = nla_data((void *)cb->args[1]);
8868 data_len = nla_len((void *)cb->args[1]);
8869 }
8870
8871 if (!rdev->ops->testmode_dump) {
8872 err = -EOPNOTSUPP;
8873 goto out_err;
8874 }
8875
8876 while (1) {
8877 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8878 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8879 NL80211_CMD_TESTMODE);
8880 struct nlattr *tmdata;
8881
8882 if (!hdr)
8883 break;
8884
8885 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8886 genlmsg_cancel(skb, hdr);
8887 break;
8888 }
8889
8890 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8891 if (!tmdata) {
8892 genlmsg_cancel(skb, hdr);
8893 break;
8894 }
8895 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8896 nla_nest_end(skb, tmdata);
8897
8898 if (err == -ENOBUFS || err == -ENOENT) {
8899 genlmsg_cancel(skb, hdr);
8900 break;
8901 } else if (err) {
8902 genlmsg_cancel(skb, hdr);
8903 goto out_err;
8904 }
8905
8906 genlmsg_end(skb, hdr);
8907 }
8908
8909 err = skb->len;
8910 /* see above */
8911 cb->args[0] = phy_idx + 1;
8912 out_err:
8913 rtnl_unlock();
8914 return err;
8915}
8916#endif
8917
8918static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8919{
8920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8921 struct net_device *dev = info->user_ptr[1];
8922 struct cfg80211_connect_params connect;
8923 struct wiphy *wiphy;
8924 struct cfg80211_cached_keys *connkeys = NULL;
8925 int err;
8926
8927 memset(&connect, 0, sizeof(connect));
8928
8929 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8930 return -EINVAL;
8931
8932 if (!info->attrs[NL80211_ATTR_SSID] ||
8933 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8934 return -EINVAL;
8935
8936 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8937 connect.auth_type =
8938 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8939 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8940 NL80211_CMD_CONNECT))
8941 return -EINVAL;
8942 } else
8943 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8944
8945 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8946
8947 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8948 !wiphy_ext_feature_isset(&rdev->wiphy,
8949 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8950 return -EINVAL;
8951 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8952
8953 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8954 NL80211_MAX_NR_CIPHER_SUITES);
8955 if (err)
8956 return err;
8957
8958 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8959 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8960 return -EOPNOTSUPP;
8961
8962 wiphy = &rdev->wiphy;
8963
8964 connect.bg_scan_period = -1;
8965 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8966 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8967 connect.bg_scan_period =
8968 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8969 }
8970
8971 if (info->attrs[NL80211_ATTR_MAC])
8972 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8973 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8974 connect.bssid_hint =
8975 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8976 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8977 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8978
8979 if (info->attrs[NL80211_ATTR_IE]) {
8980 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8981 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8982 }
8983
8984 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8985 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8986 if (connect.mfp == NL80211_MFP_OPTIONAL &&
8987 !wiphy_ext_feature_isset(&rdev->wiphy,
8988 NL80211_EXT_FEATURE_MFP_OPTIONAL))
8989 return -EOPNOTSUPP;
8990
8991 if (connect.mfp != NL80211_MFP_REQUIRED &&
8992 connect.mfp != NL80211_MFP_NO &&
8993 connect.mfp != NL80211_MFP_OPTIONAL)
8994 return -EINVAL;
8995 } else {
8996 connect.mfp = NL80211_MFP_NO;
8997 }
8998
8999 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9000 connect.prev_bssid =
9001 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9002
9003 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9004 connect.channel = nl80211_get_valid_chan(
9005 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9006 if (!connect.channel)
9007 return -EINVAL;
9008 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9009 connect.channel_hint = nl80211_get_valid_chan(
9010 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9011 if (!connect.channel_hint)
9012 return -EINVAL;
9013 }
9014
9015 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9016 connkeys = nl80211_parse_connkeys(rdev,
9017 info->attrs[NL80211_ATTR_KEYS], NULL);
9018 if (IS_ERR(connkeys))
9019 return PTR_ERR(connkeys);
9020 }
9021
9022 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9023 connect.flags |= ASSOC_REQ_DISABLE_HT;
9024
9025 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9026 memcpy(&connect.ht_capa_mask,
9027 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9028 sizeof(connect.ht_capa_mask));
9029
9030 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9031 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9032 kzfree(connkeys);
9033 return -EINVAL;
9034 }
9035 memcpy(&connect.ht_capa,
9036 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9037 sizeof(connect.ht_capa));
9038 }
9039
9040 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9041 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9042
9043 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9044 memcpy(&connect.vht_capa_mask,
9045 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9046 sizeof(connect.vht_capa_mask));
9047
9048 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9049 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9050 kzfree(connkeys);
9051 return -EINVAL;
9052 }
9053 memcpy(&connect.vht_capa,
9054 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9055 sizeof(connect.vht_capa));
9056 }
9057
9058 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9059 if (!((rdev->wiphy.features &
9060 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9061 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9062 !wiphy_ext_feature_isset(&rdev->wiphy,
9063 NL80211_EXT_FEATURE_RRM)) {
9064 kzfree(connkeys);
9065 return -EINVAL;
9066 }
9067 connect.flags |= ASSOC_REQ_USE_RRM;
9068 }
9069
9070 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9071 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9072 kzfree(connkeys);
9073 return -EOPNOTSUPP;
9074 }
9075
9076 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9077 /* bss selection makes no sense if bssid is set */
9078 if (connect.bssid) {
9079 kzfree(connkeys);
9080 return -EINVAL;
9081 }
9082
9083 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9084 wiphy, &connect.bss_select);
9085 if (err) {
9086 kzfree(connkeys);
9087 return err;
9088 }
9089 }
9090
9091 if (wiphy_ext_feature_isset(&rdev->wiphy,
9092 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9093 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9094 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9095 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9096 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9097 connect.fils_erp_username =
9098 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9099 connect.fils_erp_username_len =
9100 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9101 connect.fils_erp_realm =
9102 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9103 connect.fils_erp_realm_len =
9104 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9105 connect.fils_erp_next_seq_num =
9106 nla_get_u16(
9107 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9108 connect.fils_erp_rrk =
9109 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9110 connect.fils_erp_rrk_len =
9111 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9112 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9113 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9114 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9115 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9116 kzfree(connkeys);
9117 return -EINVAL;
9118 }
9119
9120 wdev_lock(dev->ieee80211_ptr);
9121
9122 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9123 connect.prev_bssid);
9124 if (err)
9125 kzfree(connkeys);
9126
9127 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9128 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9129 if (connect.bssid)
9130 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9131 connect.bssid, ETH_ALEN);
9132 else
9133 memset(dev->ieee80211_ptr->disconnect_bssid,
9134 0, ETH_ALEN);
9135 }
9136
9137 wdev_unlock(dev->ieee80211_ptr);
9138
9139 return err;
9140}
9141
9142static int nl80211_update_connect_params(struct sk_buff *skb,
9143 struct genl_info *info)
9144{
9145 struct cfg80211_connect_params connect = {};
9146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9147 struct net_device *dev = info->user_ptr[1];
9148 struct wireless_dev *wdev = dev->ieee80211_ptr;
9149 u32 changed = 0;
9150 int ret;
9151
9152 if (!rdev->ops->update_connect_params)
9153 return -EOPNOTSUPP;
9154
9155 if (info->attrs[NL80211_ATTR_IE]) {
9156 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9157 return -EINVAL;
9158 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9159 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9160 changed |= UPDATE_ASSOC_IES;
9161 }
9162
9163 wdev_lock(dev->ieee80211_ptr);
9164 if (!wdev->current_bss)
9165 ret = -ENOLINK;
9166 else
9167 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9168 wdev_unlock(dev->ieee80211_ptr);
9169
9170 return ret;
9171}
9172
9173static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9174{
9175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9176 struct net_device *dev = info->user_ptr[1];
9177 u16 reason;
9178 int ret;
9179
9180 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9181 reason = WLAN_REASON_DEAUTH_LEAVING;
9182 else
9183 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9184
9185 if (reason == 0)
9186 return -EINVAL;
9187
9188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9190 return -EOPNOTSUPP;
9191
9192 wdev_lock(dev->ieee80211_ptr);
9193 ret = cfg80211_disconnect(rdev, dev, reason, true);
9194 wdev_unlock(dev->ieee80211_ptr);
9195 return ret;
9196}
9197
9198static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9199{
9200 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9201 struct net *net;
9202 int err;
9203
9204 if (info->attrs[NL80211_ATTR_PID]) {
9205 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9206
9207 net = get_net_ns_by_pid(pid);
9208 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9209 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9210
9211 net = get_net_ns_by_fd(fd);
9212 } else {
9213 return -EINVAL;
9214 }
9215
9216 if (IS_ERR(net))
9217 return PTR_ERR(net);
9218
9219 err = 0;
9220
9221 /* check if anything to do */
9222 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9223 err = cfg80211_switch_netns(rdev, net);
9224
9225 put_net(net);
9226 return err;
9227}
9228
9229static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9230{
9231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9232 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9233 struct cfg80211_pmksa *pmksa) = NULL;
9234 struct net_device *dev = info->user_ptr[1];
9235 struct cfg80211_pmksa pmksa;
9236
9237 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9238
9239 if (!info->attrs[NL80211_ATTR_PMKID])
9240 return -EINVAL;
9241
9242 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9243
9244 if (info->attrs[NL80211_ATTR_MAC]) {
9245 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9246 } else if (info->attrs[NL80211_ATTR_SSID] &&
9247 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9248 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9249 info->attrs[NL80211_ATTR_PMK])) {
9250 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9251 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9252 pmksa.cache_id =
9253 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9254 } else {
9255 return -EINVAL;
9256 }
9257 if (info->attrs[NL80211_ATTR_PMK]) {
9258 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9259 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9260 }
9261
9262 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9264 return -EOPNOTSUPP;
9265
9266 switch (info->genlhdr->cmd) {
9267 case NL80211_CMD_SET_PMKSA:
9268 rdev_ops = rdev->ops->set_pmksa;
9269 break;
9270 case NL80211_CMD_DEL_PMKSA:
9271 rdev_ops = rdev->ops->del_pmksa;
9272 break;
9273 default:
9274 WARN_ON(1);
9275 break;
9276 }
9277
9278 if (!rdev_ops)
9279 return -EOPNOTSUPP;
9280
9281 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9282}
9283
9284static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9285{
9286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9287 struct net_device *dev = info->user_ptr[1];
9288
9289 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9290 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9291 return -EOPNOTSUPP;
9292
9293 if (!rdev->ops->flush_pmksa)
9294 return -EOPNOTSUPP;
9295
9296 return rdev_flush_pmksa(rdev, dev);
9297}
9298
9299static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9300{
9301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9302 struct net_device *dev = info->user_ptr[1];
9303 u8 action_code, dialog_token;
9304 u32 peer_capability = 0;
9305 u16 status_code;
9306 u8 *peer;
9307 bool initiator;
9308
9309 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9310 !rdev->ops->tdls_mgmt)
9311 return -EOPNOTSUPP;
9312
9313 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9314 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9315 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9316 !info->attrs[NL80211_ATTR_IE] ||
9317 !info->attrs[NL80211_ATTR_MAC])
9318 return -EINVAL;
9319
9320 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9321 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9322 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9323 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9324 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9325 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9326 peer_capability =
9327 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9328
9329 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9330 dialog_token, status_code, peer_capability,
9331 initiator,
9332 nla_data(info->attrs[NL80211_ATTR_IE]),
9333 nla_len(info->attrs[NL80211_ATTR_IE]));
9334}
9335
9336static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9337{
9338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9339 struct net_device *dev = info->user_ptr[1];
9340 enum nl80211_tdls_operation operation;
9341 u8 *peer;
9342
9343 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9344 !rdev->ops->tdls_oper)
9345 return -EOPNOTSUPP;
9346
9347 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9348 !info->attrs[NL80211_ATTR_MAC])
9349 return -EINVAL;
9350
9351 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9352 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9353
9354 return rdev_tdls_oper(rdev, dev, peer, operation);
9355}
9356
9357static int nl80211_remain_on_channel(struct sk_buff *skb,
9358 struct genl_info *info)
9359{
9360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9361 struct wireless_dev *wdev = info->user_ptr[1];
9362 struct cfg80211_chan_def chandef;
9363 const struct cfg80211_chan_def *compat_chandef;
9364 struct sk_buff *msg;
9365 void *hdr;
9366 u64 cookie;
9367 u32 duration;
9368 int err;
9369
9370 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9371 !info->attrs[NL80211_ATTR_DURATION])
9372 return -EINVAL;
9373
9374 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9375
9376 if (!rdev->ops->remain_on_channel ||
9377 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9378 return -EOPNOTSUPP;
9379
9380 /*
9381 * We should be on that channel for at least a minimum amount of
9382 * time (10ms) but no longer than the driver supports.
9383 */
9384 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9385 duration > rdev->wiphy.max_remain_on_channel_duration)
9386 return -EINVAL;
9387
9388 err = nl80211_parse_chandef(rdev, info, &chandef);
9389 if (err)
9390 return err;
9391
9392 wdev_lock(wdev);
9393 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9394 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9395 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9396 &chandef);
9397 if (compat_chandef != &chandef) {
9398 wdev_unlock(wdev);
9399 return -EBUSY;
9400 }
9401 }
9402 wdev_unlock(wdev);
9403
9404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9405 if (!msg)
9406 return -ENOMEM;
9407
9408 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9409 NL80211_CMD_REMAIN_ON_CHANNEL);
9410 if (!hdr) {
9411 err = -ENOBUFS;
9412 goto free_msg;
9413 }
9414
9415 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9416 duration, &cookie);
9417
9418 if (err)
9419 goto free_msg;
9420
9421 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9422 NL80211_ATTR_PAD))
9423 goto nla_put_failure;
9424
9425 genlmsg_end(msg, hdr);
9426
9427 return genlmsg_reply(msg, info);
9428
9429 nla_put_failure:
9430 err = -ENOBUFS;
9431 free_msg:
9432 nlmsg_free(msg);
9433 return err;
9434}
9435
9436static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9437 struct genl_info *info)
9438{
9439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9440 struct wireless_dev *wdev = info->user_ptr[1];
9441 u64 cookie;
9442
9443 if (!info->attrs[NL80211_ATTR_COOKIE])
9444 return -EINVAL;
9445
9446 if (!rdev->ops->cancel_remain_on_channel)
9447 return -EOPNOTSUPP;
9448
9449 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9450
9451 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9452}
9453
9454static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9455 struct genl_info *info)
9456{
9457 struct cfg80211_bitrate_mask mask;
9458 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9459 struct net_device *dev = info->user_ptr[1];
9460 int err;
9461
9462 if (!rdev->ops->set_bitrate_mask)
9463 return -EOPNOTSUPP;
9464
9465 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9466 if (err)
9467 return err;
9468
9469 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9470}
9471
9472static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9473{
9474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9475 struct wireless_dev *wdev = info->user_ptr[1];
9476 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9477
9478 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9479 return -EINVAL;
9480
9481 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9482 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9483
9484 switch (wdev->iftype) {
9485 case NL80211_IFTYPE_STATION:
9486 case NL80211_IFTYPE_ADHOC:
9487 case NL80211_IFTYPE_P2P_CLIENT:
9488 case NL80211_IFTYPE_AP:
9489 case NL80211_IFTYPE_AP_VLAN:
9490 case NL80211_IFTYPE_MESH_POINT:
9491 case NL80211_IFTYPE_P2P_GO:
9492 case NL80211_IFTYPE_P2P_DEVICE:
9493 break;
9494 case NL80211_IFTYPE_NAN:
9495 default:
9496 return -EOPNOTSUPP;
9497 }
9498
9499 /* not much point in registering if we can't reply */
9500 if (!rdev->ops->mgmt_tx)
9501 return -EOPNOTSUPP;
9502
9503 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9504 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9505 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9506}
9507
9508static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9509{
9510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511 struct wireless_dev *wdev = info->user_ptr[1];
9512 struct cfg80211_chan_def chandef;
9513 int err;
9514 void *hdr = NULL;
9515 u64 cookie;
9516 struct sk_buff *msg = NULL;
9517 struct cfg80211_mgmt_tx_params params = {
9518 .dont_wait_for_ack =
9519 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9520 };
9521
9522 if (!info->attrs[NL80211_ATTR_FRAME])
9523 return -EINVAL;
9524
9525 if (!rdev->ops->mgmt_tx)
9526 return -EOPNOTSUPP;
9527
9528 switch (wdev->iftype) {
9529 case NL80211_IFTYPE_P2P_DEVICE:
9530 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9531 return -EINVAL;
9532 case NL80211_IFTYPE_STATION:
9533 case NL80211_IFTYPE_ADHOC:
9534 case NL80211_IFTYPE_P2P_CLIENT:
9535 case NL80211_IFTYPE_AP:
9536 case NL80211_IFTYPE_AP_VLAN:
9537 case NL80211_IFTYPE_MESH_POINT:
9538 case NL80211_IFTYPE_P2P_GO:
9539 break;
9540 case NL80211_IFTYPE_NAN:
9541 default:
9542 return -EOPNOTSUPP;
9543 }
9544
9545 if (info->attrs[NL80211_ATTR_DURATION]) {
9546 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9547 return -EINVAL;
9548 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9549
9550 /*
9551 * We should wait on the channel for at least a minimum amount
9552 * of time (10ms) but no longer than the driver supports.
9553 */
9554 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9555 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9556 return -EINVAL;
9557 }
9558
9559 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9560
9561 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9562 return -EINVAL;
9563
9564 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9565
9566 /* get the channel if any has been specified, otherwise pass NULL to
9567 * the driver. The latter will use the current one
9568 */
9569 chandef.chan = NULL;
9570 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9571 err = nl80211_parse_chandef(rdev, info, &chandef);
9572 if (err)
9573 return err;
9574 }
9575
9576 if (!chandef.chan && params.offchan)
9577 return -EINVAL;
9578
9579 wdev_lock(wdev);
9580 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9581 wdev_unlock(wdev);
9582 return -EBUSY;
9583 }
9584 wdev_unlock(wdev);
9585
9586 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9587 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9588
9589 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9590 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9591 int i;
9592
9593 if (len % sizeof(u16))
9594 return -EINVAL;
9595
9596 params.n_csa_offsets = len / sizeof(u16);
9597 params.csa_offsets =
9598 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9599
9600 /* check that all the offsets fit the frame */
9601 for (i = 0; i < params.n_csa_offsets; i++) {
9602 if (params.csa_offsets[i] >= params.len)
9603 return -EINVAL;
9604 }
9605 }
9606
9607 if (!params.dont_wait_for_ack) {
9608 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9609 if (!msg)
9610 return -ENOMEM;
9611
9612 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9613 NL80211_CMD_FRAME);
9614 if (!hdr) {
9615 err = -ENOBUFS;
9616 goto free_msg;
9617 }
9618 }
9619
9620 params.chan = chandef.chan;
9621 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9622 if (err)
9623 goto free_msg;
9624
9625 if (msg) {
9626 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9627 NL80211_ATTR_PAD))
9628 goto nla_put_failure;
9629
9630 genlmsg_end(msg, hdr);
9631 return genlmsg_reply(msg, info);
9632 }
9633
9634 return 0;
9635
9636 nla_put_failure:
9637 err = -ENOBUFS;
9638 free_msg:
9639 nlmsg_free(msg);
9640 return err;
9641}
9642
9643static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9644{
9645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9646 struct wireless_dev *wdev = info->user_ptr[1];
9647 u64 cookie;
9648
9649 if (!info->attrs[NL80211_ATTR_COOKIE])
9650 return -EINVAL;
9651
9652 if (!rdev->ops->mgmt_tx_cancel_wait)
9653 return -EOPNOTSUPP;
9654
9655 switch (wdev->iftype) {
9656 case NL80211_IFTYPE_STATION:
9657 case NL80211_IFTYPE_ADHOC:
9658 case NL80211_IFTYPE_P2P_CLIENT:
9659 case NL80211_IFTYPE_AP:
9660 case NL80211_IFTYPE_AP_VLAN:
9661 case NL80211_IFTYPE_P2P_GO:
9662 case NL80211_IFTYPE_P2P_DEVICE:
9663 break;
9664 case NL80211_IFTYPE_NAN:
9665 default:
9666 return -EOPNOTSUPP;
9667 }
9668
9669 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9670
9671 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9672}
9673
9674static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9675{
9676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9677 struct wireless_dev *wdev;
9678 struct net_device *dev = info->user_ptr[1];
9679 u8 ps_state;
9680 bool state;
9681 int err;
9682
9683 if (!info->attrs[NL80211_ATTR_PS_STATE])
9684 return -EINVAL;
9685
9686 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9687
9688 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9689 return -EINVAL;
9690
9691 wdev = dev->ieee80211_ptr;
9692
9693 if (!rdev->ops->set_power_mgmt)
9694 return -EOPNOTSUPP;
9695
9696 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9697
9698 if (state == wdev->ps)
9699 return 0;
9700
9701 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9702 if (!err)
9703 wdev->ps = state;
9704 return err;
9705}
9706
9707static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9708{
9709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9710 enum nl80211_ps_state ps_state;
9711 struct wireless_dev *wdev;
9712 struct net_device *dev = info->user_ptr[1];
9713 struct sk_buff *msg;
9714 void *hdr;
9715 int err;
9716
9717 wdev = dev->ieee80211_ptr;
9718
9719 if (!rdev->ops->set_power_mgmt)
9720 return -EOPNOTSUPP;
9721
9722 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9723 if (!msg)
9724 return -ENOMEM;
9725
9726 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9727 NL80211_CMD_GET_POWER_SAVE);
9728 if (!hdr) {
9729 err = -ENOBUFS;
9730 goto free_msg;
9731 }
9732
9733 if (wdev->ps)
9734 ps_state = NL80211_PS_ENABLED;
9735 else
9736 ps_state = NL80211_PS_DISABLED;
9737
9738 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9739 goto nla_put_failure;
9740
9741 genlmsg_end(msg, hdr);
9742 return genlmsg_reply(msg, info);
9743
9744 nla_put_failure:
9745 err = -ENOBUFS;
9746 free_msg:
9747 nlmsg_free(msg);
9748 return err;
9749}
9750
9751static const struct nla_policy
9752nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9753 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9754 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9755 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9756 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9757 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9758 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9759 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9760};
9761
9762static int nl80211_set_cqm_txe(struct genl_info *info,
9763 u32 rate, u32 pkts, u32 intvl)
9764{
9765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9766 struct net_device *dev = info->user_ptr[1];
9767 struct wireless_dev *wdev = dev->ieee80211_ptr;
9768
9769 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9770 return -EINVAL;
9771
9772 if (!rdev->ops->set_cqm_txe_config)
9773 return -EOPNOTSUPP;
9774
9775 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9776 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9777 return -EOPNOTSUPP;
9778
9779 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9780}
9781
9782static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9783 struct net_device *dev)
9784{
9785 struct wireless_dev *wdev = dev->ieee80211_ptr;
9786 s32 last, low, high;
9787 u32 hyst;
9788 int i, n, low_index;
9789 int err;
9790
9791 /* RSSI reporting disabled? */
9792 if (!wdev->cqm_config)
9793 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9794
9795 /*
9796 * Obtain current RSSI value if possible, if not and no RSSI threshold
9797 * event has been received yet, we should receive an event after a
9798 * connection is established and enough beacons received to calculate
9799 * the average.
9800 */
9801 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9802 rdev->ops->get_station) {
9803 struct station_info sinfo = {};
9804 u8 *mac_addr;
9805
9806 mac_addr = wdev->current_bss->pub.bssid;
9807
9808 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9809 if (err)
9810 return err;
9811
9812 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9813 wdev->cqm_config->last_rssi_event_value =
9814 (s8) sinfo.rx_beacon_signal_avg;
9815 }
9816
9817 last = wdev->cqm_config->last_rssi_event_value;
9818 hyst = wdev->cqm_config->rssi_hyst;
9819 n = wdev->cqm_config->n_rssi_thresholds;
9820
9821 for (i = 0; i < n; i++)
9822 if (last < wdev->cqm_config->rssi_thresholds[i])
9823 break;
9824
9825 low_index = i - 1;
9826 if (low_index >= 0) {
9827 low_index = array_index_nospec(low_index, n);
9828 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
9829 } else {
9830 low = S32_MIN;
9831 }
9832 if (i < n) {
9833 i = array_index_nospec(i, n);
9834 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
9835 } else {
9836 high = S32_MAX;
9837 }
9838
9839 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9840}
9841
9842static int nl80211_set_cqm_rssi(struct genl_info *info,
9843 const s32 *thresholds, int n_thresholds,
9844 u32 hysteresis)
9845{
9846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9847 struct net_device *dev = info->user_ptr[1];
9848 struct wireless_dev *wdev = dev->ieee80211_ptr;
9849 int i, err;
9850 s32 prev = S32_MIN;
9851
9852 /* Check all values negative and sorted */
9853 for (i = 0; i < n_thresholds; i++) {
9854 if (thresholds[i] > 0 || thresholds[i] <= prev)
9855 return -EINVAL;
9856
9857 prev = thresholds[i];
9858 }
9859
9860 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9861 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9862 return -EOPNOTSUPP;
9863
9864 wdev_lock(wdev);
9865 cfg80211_cqm_config_free(wdev);
9866 wdev_unlock(wdev);
9867
9868 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9869 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9870 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9871
9872 return rdev_set_cqm_rssi_config(rdev, dev,
9873 thresholds[0], hysteresis);
9874 }
9875
9876 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9877 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9878 return -EOPNOTSUPP;
9879
9880 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9881 n_thresholds = 0;
9882
9883 wdev_lock(wdev);
9884 if (n_thresholds) {
9885 struct cfg80211_cqm_config *cqm_config;
9886
9887 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9888 n_thresholds * sizeof(s32), GFP_KERNEL);
9889 if (!cqm_config) {
9890 err = -ENOMEM;
9891 goto unlock;
9892 }
9893
9894 cqm_config->rssi_hyst = hysteresis;
9895 cqm_config->n_rssi_thresholds = n_thresholds;
9896 memcpy(cqm_config->rssi_thresholds, thresholds,
9897 n_thresholds * sizeof(s32));
9898
9899 wdev->cqm_config = cqm_config;
9900 }
9901
9902 err = cfg80211_cqm_rssi_update(rdev, dev);
9903
9904unlock:
9905 wdev_unlock(wdev);
9906
9907 return err;
9908}
9909
9910static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9911{
9912 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9913 struct nlattr *cqm;
9914 int err;
9915
9916 cqm = info->attrs[NL80211_ATTR_CQM];
9917 if (!cqm)
9918 return -EINVAL;
9919
9920 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9921 nl80211_attr_cqm_policy, info->extack);
9922 if (err)
9923 return err;
9924
9925 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9926 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9927 const s32 *thresholds =
9928 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9929 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9930 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9931
9932 if (len % 4)
9933 return -EINVAL;
9934
9935 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9936 hysteresis);
9937 }
9938
9939 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9940 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9941 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9942 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9943 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9944 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9945
9946 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9947 }
9948
9949 return -EINVAL;
9950}
9951
9952static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9953{
9954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9955 struct net_device *dev = info->user_ptr[1];
9956 struct ocb_setup setup = {};
9957 int err;
9958
9959 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9960 if (err)
9961 return err;
9962
9963 return cfg80211_join_ocb(rdev, dev, &setup);
9964}
9965
9966static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9967{
9968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9969 struct net_device *dev = info->user_ptr[1];
9970
9971 return cfg80211_leave_ocb(rdev, dev);
9972}
9973
9974static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9975{
9976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9977 struct net_device *dev = info->user_ptr[1];
9978 struct mesh_config cfg;
9979 struct mesh_setup setup;
9980 int err;
9981
9982 /* start with default */
9983 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9984 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9985
9986 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9987 /* and parse parameters if given */
9988 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9989 if (err)
9990 return err;
9991 }
9992
9993 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9994 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9995 return -EINVAL;
9996
9997 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9998 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9999
10000 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10001 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10002 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10003 return -EINVAL;
10004
10005 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10006 setup.beacon_interval =
10007 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10008
10009 err = cfg80211_validate_beacon_int(rdev,
10010 NL80211_IFTYPE_MESH_POINT,
10011 setup.beacon_interval);
10012 if (err)
10013 return err;
10014 }
10015
10016 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10017 setup.dtim_period =
10018 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10019 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10020 return -EINVAL;
10021 }
10022
10023 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10024 /* parse additional setup parameters if given */
10025 err = nl80211_parse_mesh_setup(info, &setup);
10026 if (err)
10027 return err;
10028 }
10029
10030 if (setup.user_mpm)
10031 cfg.auto_open_plinks = false;
10032
10033 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10034 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10035 if (err)
10036 return err;
10037 } else {
10038 /* cfg80211_join_mesh() will sort it out */
10039 setup.chandef.chan = NULL;
10040 }
10041
10042 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10043 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10044 int n_rates =
10045 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10046 struct ieee80211_supported_band *sband;
10047
10048 if (!setup.chandef.chan)
10049 return -EINVAL;
10050
10051 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10052
10053 err = ieee80211_get_ratemask(sband, rates, n_rates,
10054 &setup.basic_rates);
10055 if (err)
10056 return err;
10057 }
10058
10059 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10060 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10061 if (err)
10062 return err;
10063
10064 if (!setup.chandef.chan)
10065 return -EINVAL;
10066
10067 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10068 &setup.beacon_rate);
10069 if (err)
10070 return err;
10071 }
10072
10073 setup.userspace_handles_dfs =
10074 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10075
10076 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10077}
10078
10079static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10080{
10081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10082 struct net_device *dev = info->user_ptr[1];
10083
10084 return cfg80211_leave_mesh(rdev, dev);
10085}
10086
10087#ifdef CONFIG_PM
10088static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10089 struct cfg80211_registered_device *rdev)
10090{
10091 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10092 struct nlattr *nl_pats, *nl_pat;
10093 int i, pat_len;
10094
10095 if (!wowlan->n_patterns)
10096 return 0;
10097
10098 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10099 if (!nl_pats)
10100 return -ENOBUFS;
10101
10102 for (i = 0; i < wowlan->n_patterns; i++) {
10103 nl_pat = nla_nest_start(msg, i + 1);
10104 if (!nl_pat)
10105 return -ENOBUFS;
10106 pat_len = wowlan->patterns[i].pattern_len;
10107 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10108 wowlan->patterns[i].mask) ||
10109 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10110 wowlan->patterns[i].pattern) ||
10111 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10112 wowlan->patterns[i].pkt_offset))
10113 return -ENOBUFS;
10114 nla_nest_end(msg, nl_pat);
10115 }
10116 nla_nest_end(msg, nl_pats);
10117
10118 return 0;
10119}
10120
10121static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10122 struct cfg80211_wowlan_tcp *tcp)
10123{
10124 struct nlattr *nl_tcp;
10125
10126 if (!tcp)
10127 return 0;
10128
10129 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10130 if (!nl_tcp)
10131 return -ENOBUFS;
10132
10133 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10134 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10135 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10136 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10137 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10138 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10139 tcp->payload_len, tcp->payload) ||
10140 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10141 tcp->data_interval) ||
10142 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10143 tcp->wake_len, tcp->wake_data) ||
10144 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10145 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10146 return -ENOBUFS;
10147
10148 if (tcp->payload_seq.len &&
10149 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10150 sizeof(tcp->payload_seq), &tcp->payload_seq))
10151 return -ENOBUFS;
10152
10153 if (tcp->payload_tok.len &&
10154 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10155 sizeof(tcp->payload_tok) + tcp->tokens_size,
10156 &tcp->payload_tok))
10157 return -ENOBUFS;
10158
10159 nla_nest_end(msg, nl_tcp);
10160
10161 return 0;
10162}
10163
10164static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10165 struct cfg80211_sched_scan_request *req)
10166{
10167 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10168 int i;
10169
10170 if (!req)
10171 return 0;
10172
10173 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10174 if (!nd)
10175 return -ENOBUFS;
10176
10177 if (req->n_scan_plans == 1 &&
10178 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10179 req->scan_plans[0].interval * 1000))
10180 return -ENOBUFS;
10181
10182 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10183 return -ENOBUFS;
10184
10185 if (req->relative_rssi_set) {
10186 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10187
10188 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10189 req->relative_rssi))
10190 return -ENOBUFS;
10191
10192 rssi_adjust.band = req->rssi_adjust.band;
10193 rssi_adjust.delta = req->rssi_adjust.delta;
10194 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10195 sizeof(rssi_adjust), &rssi_adjust))
10196 return -ENOBUFS;
10197 }
10198
10199 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10200 if (!freqs)
10201 return -ENOBUFS;
10202
10203 for (i = 0; i < req->n_channels; i++) {
10204 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10205 return -ENOBUFS;
10206 }
10207
10208 nla_nest_end(msg, freqs);
10209
10210 if (req->n_match_sets) {
10211 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10212 if (!matches)
10213 return -ENOBUFS;
10214
10215 for (i = 0; i < req->n_match_sets; i++) {
10216 match = nla_nest_start(msg, i);
10217 if (!match)
10218 return -ENOBUFS;
10219
10220 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10221 req->match_sets[i].ssid.ssid_len,
10222 req->match_sets[i].ssid.ssid))
10223 return -ENOBUFS;
10224 nla_nest_end(msg, match);
10225 }
10226 nla_nest_end(msg, matches);
10227 }
10228
10229 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10230 if (!scan_plans)
10231 return -ENOBUFS;
10232
10233 for (i = 0; i < req->n_scan_plans; i++) {
10234 scan_plan = nla_nest_start(msg, i + 1);
10235 if (!scan_plan)
10236 return -ENOBUFS;
10237
10238 if (!scan_plan ||
10239 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10240 req->scan_plans[i].interval) ||
10241 (req->scan_plans[i].iterations &&
10242 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10243 req->scan_plans[i].iterations)))
10244 return -ENOBUFS;
10245 nla_nest_end(msg, scan_plan);
10246 }
10247 nla_nest_end(msg, scan_plans);
10248
10249 nla_nest_end(msg, nd);
10250
10251 return 0;
10252}
10253
10254static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10255{
10256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10257 struct sk_buff *msg;
10258 void *hdr;
10259 u32 size = NLMSG_DEFAULT_SIZE;
10260
10261 if (!rdev->wiphy.wowlan)
10262 return -EOPNOTSUPP;
10263
10264 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10265 /* adjust size to have room for all the data */
10266 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10267 rdev->wiphy.wowlan_config->tcp->payload_len +
10268 rdev->wiphy.wowlan_config->tcp->wake_len +
10269 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10270 }
10271
10272 msg = nlmsg_new(size, GFP_KERNEL);
10273 if (!msg)
10274 return -ENOMEM;
10275
10276 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10277 NL80211_CMD_GET_WOWLAN);
10278 if (!hdr)
10279 goto nla_put_failure;
10280
10281 if (rdev->wiphy.wowlan_config) {
10282 struct nlattr *nl_wowlan;
10283
10284 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10285 if (!nl_wowlan)
10286 goto nla_put_failure;
10287
10288 if ((rdev->wiphy.wowlan_config->any &&
10289 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10290 (rdev->wiphy.wowlan_config->disconnect &&
10291 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10292 (rdev->wiphy.wowlan_config->magic_pkt &&
10293 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10294 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10295 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10296 (rdev->wiphy.wowlan_config->eap_identity_req &&
10297 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10298 (rdev->wiphy.wowlan_config->four_way_handshake &&
10299 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10300 (rdev->wiphy.wowlan_config->rfkill_release &&
10301 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10302 goto nla_put_failure;
10303
10304 if (nl80211_send_wowlan_patterns(msg, rdev))
10305 goto nla_put_failure;
10306
10307 if (nl80211_send_wowlan_tcp(msg,
10308 rdev->wiphy.wowlan_config->tcp))
10309 goto nla_put_failure;
10310
10311 if (nl80211_send_wowlan_nd(
10312 msg,
10313 rdev->wiphy.wowlan_config->nd_config))
10314 goto nla_put_failure;
10315
10316 nla_nest_end(msg, nl_wowlan);
10317 }
10318
10319 genlmsg_end(msg, hdr);
10320 return genlmsg_reply(msg, info);
10321
10322nla_put_failure:
10323 nlmsg_free(msg);
10324 return -ENOBUFS;
10325}
10326
10327static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10328 struct nlattr *attr,
10329 struct cfg80211_wowlan *trig)
10330{
10331 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10332 struct cfg80211_wowlan_tcp *cfg;
10333 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10334 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10335 u32 size;
10336 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10337 int err, port;
10338
10339 if (!rdev->wiphy.wowlan->tcp)
10340 return -EINVAL;
10341
10342 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10343 nl80211_wowlan_tcp_policy, NULL);
10344 if (err)
10345 return err;
10346
10347 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10348 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10349 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10350 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10351 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10352 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10353 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10354 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10355 return -EINVAL;
10356
10357 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10358 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10359 return -EINVAL;
10360
10361 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10362 rdev->wiphy.wowlan->tcp->data_interval_max ||
10363 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10364 return -EINVAL;
10365
10366 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10367 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10368 return -EINVAL;
10369
10370 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10371 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10372 return -EINVAL;
10373
10374 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10375 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10376
10377 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10378 tokens_size = tokln - sizeof(*tok);
10379
10380 if (!tok->len || tokens_size % tok->len)
10381 return -EINVAL;
10382 if (!rdev->wiphy.wowlan->tcp->tok)
10383 return -EINVAL;
10384 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10385 return -EINVAL;
10386 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10387 return -EINVAL;
10388 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10389 return -EINVAL;
10390 if (tok->offset + tok->len > data_size)
10391 return -EINVAL;
10392 }
10393
10394 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10395 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10396 if (!rdev->wiphy.wowlan->tcp->seq)
10397 return -EINVAL;
10398 if (seq->len == 0 || seq->len > 4)
10399 return -EINVAL;
10400 if (seq->len + seq->offset > data_size)
10401 return -EINVAL;
10402 }
10403
10404 size = sizeof(*cfg);
10405 size += data_size;
10406 size += wake_size + wake_mask_size;
10407 size += tokens_size;
10408
10409 cfg = kzalloc(size, GFP_KERNEL);
10410 if (!cfg)
10411 return -ENOMEM;
10412 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10413 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10414 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10415 ETH_ALEN);
10416 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10417 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10418 else
10419 port = 0;
10420#ifdef CONFIG_INET
10421 /* allocate a socket and port for it and use it */
10422 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10423 IPPROTO_TCP, &cfg->sock, 1);
10424 if (err) {
10425 kfree(cfg);
10426 return err;
10427 }
10428 if (inet_csk_get_port(cfg->sock->sk, port)) {
10429 sock_release(cfg->sock);
10430 kfree(cfg);
10431 return -EADDRINUSE;
10432 }
10433 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10434#else
10435 if (!port) {
10436 kfree(cfg);
10437 return -EINVAL;
10438 }
10439 cfg->src_port = port;
10440#endif
10441
10442 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10443 cfg->payload_len = data_size;
10444 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10445 memcpy((void *)cfg->payload,
10446 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10447 data_size);
10448 if (seq)
10449 cfg->payload_seq = *seq;
10450 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10451 cfg->wake_len = wake_size;
10452 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10453 memcpy((void *)cfg->wake_data,
10454 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10455 wake_size);
10456 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10457 data_size + wake_size;
10458 memcpy((void *)cfg->wake_mask,
10459 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10460 wake_mask_size);
10461 if (tok) {
10462 cfg->tokens_size = tokens_size;
10463 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10464 }
10465
10466 trig->tcp = cfg;
10467
10468 return 0;
10469}
10470
10471static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10472 const struct wiphy_wowlan_support *wowlan,
10473 struct nlattr *attr,
10474 struct cfg80211_wowlan *trig)
10475{
10476 struct nlattr **tb;
10477 int err;
10478
10479 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10480 if (!tb)
10481 return -ENOMEM;
10482
10483 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10484 err = -EOPNOTSUPP;
10485 goto out;
10486 }
10487
10488 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10489 NULL);
10490 if (err)
10491 goto out;
10492
10493 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10494 wowlan->max_nd_match_sets);
10495 err = PTR_ERR_OR_ZERO(trig->nd_config);
10496 if (err)
10497 trig->nd_config = NULL;
10498
10499out:
10500 kfree(tb);
10501 return err;
10502}
10503
10504static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10505{
10506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10507 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10508 struct cfg80211_wowlan new_triggers = {};
10509 struct cfg80211_wowlan *ntrig;
10510 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10511 int err, i;
10512 bool prev_enabled = rdev->wiphy.wowlan_config;
10513 bool regular = false;
10514
10515 if (!wowlan)
10516 return -EOPNOTSUPP;
10517
10518 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10519 cfg80211_rdev_free_wowlan(rdev);
10520 rdev->wiphy.wowlan_config = NULL;
10521 goto set_wakeup;
10522 }
10523
10524 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10525 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10526 nl80211_wowlan_policy, info->extack);
10527 if (err)
10528 return err;
10529
10530 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10531 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10532 return -EINVAL;
10533 new_triggers.any = true;
10534 }
10535
10536 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10537 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10538 return -EINVAL;
10539 new_triggers.disconnect = true;
10540 regular = true;
10541 }
10542
10543 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10544 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10545 return -EINVAL;
10546 new_triggers.magic_pkt = true;
10547 regular = true;
10548 }
10549
10550 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10551 return -EINVAL;
10552
10553 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10554 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10555 return -EINVAL;
10556 new_triggers.gtk_rekey_failure = true;
10557 regular = true;
10558 }
10559
10560 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10561 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10562 return -EINVAL;
10563 new_triggers.eap_identity_req = true;
10564 regular = true;
10565 }
10566
10567 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10568 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10569 return -EINVAL;
10570 new_triggers.four_way_handshake = true;
10571 regular = true;
10572 }
10573
10574 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10575 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10576 return -EINVAL;
10577 new_triggers.rfkill_release = true;
10578 regular = true;
10579 }
10580
10581 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10582 struct nlattr *pat;
10583 int n_patterns = 0;
10584 int rem, pat_len, mask_len, pkt_offset;
10585 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10586
10587 regular = true;
10588
10589 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10590 rem)
10591 n_patterns++;
10592 if (n_patterns > wowlan->n_patterns)
10593 return -EINVAL;
10594
10595 new_triggers.patterns = kcalloc(n_patterns,
10596 sizeof(new_triggers.patterns[0]),
10597 GFP_KERNEL);
10598 if (!new_triggers.patterns)
10599 return -ENOMEM;
10600
10601 new_triggers.n_patterns = n_patterns;
10602 i = 0;
10603
10604 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10605 rem) {
10606 u8 *mask_pat;
10607
10608 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10609 nl80211_packet_pattern_policy,
10610 info->extack);
10611 err = -EINVAL;
10612 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10613 !pat_tb[NL80211_PKTPAT_PATTERN])
10614 goto error;
10615 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10616 mask_len = DIV_ROUND_UP(pat_len, 8);
10617 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10618 goto error;
10619 if (pat_len > wowlan->pattern_max_len ||
10620 pat_len < wowlan->pattern_min_len)
10621 goto error;
10622
10623 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10624 pkt_offset = 0;
10625 else
10626 pkt_offset = nla_get_u32(
10627 pat_tb[NL80211_PKTPAT_OFFSET]);
10628 if (pkt_offset > wowlan->max_pkt_offset)
10629 goto error;
10630 new_triggers.patterns[i].pkt_offset = pkt_offset;
10631
10632 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10633 if (!mask_pat) {
10634 err = -ENOMEM;
10635 goto error;
10636 }
10637 new_triggers.patterns[i].mask = mask_pat;
10638 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10639 mask_len);
10640 mask_pat += mask_len;
10641 new_triggers.patterns[i].pattern = mask_pat;
10642 new_triggers.patterns[i].pattern_len = pat_len;
10643 memcpy(mask_pat,
10644 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10645 pat_len);
10646 i++;
10647 }
10648 }
10649
10650 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10651 regular = true;
10652 err = nl80211_parse_wowlan_tcp(
10653 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10654 &new_triggers);
10655 if (err)
10656 goto error;
10657 }
10658
10659 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10660 regular = true;
10661 err = nl80211_parse_wowlan_nd(
10662 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10663 &new_triggers);
10664 if (err)
10665 goto error;
10666 }
10667
10668 /* The 'any' trigger means the device continues operating more or less
10669 * as in its normal operation mode and wakes up the host on most of the
10670 * normal interrupts (like packet RX, ...)
10671 * It therefore makes little sense to combine with the more constrained
10672 * wakeup trigger modes.
10673 */
10674 if (new_triggers.any && regular) {
10675 err = -EINVAL;
10676 goto error;
10677 }
10678
10679 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10680 if (!ntrig) {
10681 err = -ENOMEM;
10682 goto error;
10683 }
10684 cfg80211_rdev_free_wowlan(rdev);
10685 rdev->wiphy.wowlan_config = ntrig;
10686
10687 set_wakeup:
10688 if (rdev->ops->set_wakeup &&
10689 prev_enabled != !!rdev->wiphy.wowlan_config)
10690 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10691
10692 return 0;
10693 error:
10694 for (i = 0; i < new_triggers.n_patterns; i++)
10695 kfree(new_triggers.patterns[i].mask);
10696 kfree(new_triggers.patterns);
10697 if (new_triggers.tcp && new_triggers.tcp->sock)
10698 sock_release(new_triggers.tcp->sock);
10699 kfree(new_triggers.tcp);
10700 kfree(new_triggers.nd_config);
10701 return err;
10702}
10703#endif
10704
10705static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10706 struct cfg80211_registered_device *rdev)
10707{
10708 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10709 int i, j, pat_len;
10710 struct cfg80211_coalesce_rules *rule;
10711
10712 if (!rdev->coalesce->n_rules)
10713 return 0;
10714
10715 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10716 if (!nl_rules)
10717 return -ENOBUFS;
10718
10719 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10720 nl_rule = nla_nest_start(msg, i + 1);
10721 if (!nl_rule)
10722 return -ENOBUFS;
10723
10724 rule = &rdev->coalesce->rules[i];
10725 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10726 rule->delay))
10727 return -ENOBUFS;
10728
10729 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10730 rule->condition))
10731 return -ENOBUFS;
10732
10733 nl_pats = nla_nest_start(msg,
10734 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10735 if (!nl_pats)
10736 return -ENOBUFS;
10737
10738 for (j = 0; j < rule->n_patterns; j++) {
10739 nl_pat = nla_nest_start(msg, j + 1);
10740 if (!nl_pat)
10741 return -ENOBUFS;
10742 pat_len = rule->patterns[j].pattern_len;
10743 if (nla_put(msg, NL80211_PKTPAT_MASK,
10744 DIV_ROUND_UP(pat_len, 8),
10745 rule->patterns[j].mask) ||
10746 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10747 rule->patterns[j].pattern) ||
10748 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10749 rule->patterns[j].pkt_offset))
10750 return -ENOBUFS;
10751 nla_nest_end(msg, nl_pat);
10752 }
10753 nla_nest_end(msg, nl_pats);
10754 nla_nest_end(msg, nl_rule);
10755 }
10756 nla_nest_end(msg, nl_rules);
10757
10758 return 0;
10759}
10760
10761static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10762{
10763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10764 struct sk_buff *msg;
10765 void *hdr;
10766
10767 if (!rdev->wiphy.coalesce)
10768 return -EOPNOTSUPP;
10769
10770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10771 if (!msg)
10772 return -ENOMEM;
10773
10774 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10775 NL80211_CMD_GET_COALESCE);
10776 if (!hdr)
10777 goto nla_put_failure;
10778
10779 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10780 goto nla_put_failure;
10781
10782 genlmsg_end(msg, hdr);
10783 return genlmsg_reply(msg, info);
10784
10785nla_put_failure:
10786 nlmsg_free(msg);
10787 return -ENOBUFS;
10788}
10789
10790void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10791{
10792 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10793 int i, j;
10794 struct cfg80211_coalesce_rules *rule;
10795
10796 if (!coalesce)
10797 return;
10798
10799 for (i = 0; i < coalesce->n_rules; i++) {
10800 rule = &coalesce->rules[i];
10801 for (j = 0; j < rule->n_patterns; j++)
10802 kfree(rule->patterns[j].mask);
10803 kfree(rule->patterns);
10804 }
10805 kfree(coalesce->rules);
10806 kfree(coalesce);
10807 rdev->coalesce = NULL;
10808}
10809
10810static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10811 struct nlattr *rule,
10812 struct cfg80211_coalesce_rules *new_rule)
10813{
10814 int err, i;
10815 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10816 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10817 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10818 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10819
10820 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10821 nl80211_coalesce_policy, NULL);
10822 if (err)
10823 return err;
10824
10825 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10826 new_rule->delay =
10827 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10828 if (new_rule->delay > coalesce->max_delay)
10829 return -EINVAL;
10830
10831 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10832 new_rule->condition =
10833 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10834 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10835 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10836 return -EINVAL;
10837
10838 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10839 return -EINVAL;
10840
10841 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10842 rem)
10843 n_patterns++;
10844 if (n_patterns > coalesce->n_patterns)
10845 return -EINVAL;
10846
10847 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10848 GFP_KERNEL);
10849 if (!new_rule->patterns)
10850 return -ENOMEM;
10851
10852 new_rule->n_patterns = n_patterns;
10853 i = 0;
10854
10855 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10856 rem) {
10857 u8 *mask_pat;
10858
10859 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10860 nl80211_packet_pattern_policy, NULL);
10861 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10862 !pat_tb[NL80211_PKTPAT_PATTERN])
10863 return -EINVAL;
10864 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10865 mask_len = DIV_ROUND_UP(pat_len, 8);
10866 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10867 return -EINVAL;
10868 if (pat_len > coalesce->pattern_max_len ||
10869 pat_len < coalesce->pattern_min_len)
10870 return -EINVAL;
10871
10872 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10873 pkt_offset = 0;
10874 else
10875 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10876 if (pkt_offset > coalesce->max_pkt_offset)
10877 return -EINVAL;
10878 new_rule->patterns[i].pkt_offset = pkt_offset;
10879
10880 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10881 if (!mask_pat)
10882 return -ENOMEM;
10883
10884 new_rule->patterns[i].mask = mask_pat;
10885 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10886 mask_len);
10887
10888 mask_pat += mask_len;
10889 new_rule->patterns[i].pattern = mask_pat;
10890 new_rule->patterns[i].pattern_len = pat_len;
10891 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10892 pat_len);
10893 i++;
10894 }
10895
10896 return 0;
10897}
10898
10899static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10900{
10901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10902 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10903 struct cfg80211_coalesce new_coalesce = {};
10904 struct cfg80211_coalesce *n_coalesce;
10905 int err, rem_rule, n_rules = 0, i, j;
10906 struct nlattr *rule;
10907 struct cfg80211_coalesce_rules *tmp_rule;
10908
10909 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10910 return -EOPNOTSUPP;
10911
10912 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10913 cfg80211_rdev_free_coalesce(rdev);
10914 rdev_set_coalesce(rdev, NULL);
10915 return 0;
10916 }
10917
10918 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10919 rem_rule)
10920 n_rules++;
10921 if (n_rules > coalesce->n_rules)
10922 return -EINVAL;
10923
10924 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10925 GFP_KERNEL);
10926 if (!new_coalesce.rules)
10927 return -ENOMEM;
10928
10929 new_coalesce.n_rules = n_rules;
10930 i = 0;
10931
10932 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10933 rem_rule) {
10934 err = nl80211_parse_coalesce_rule(rdev, rule,
10935 &new_coalesce.rules[i]);
10936 if (err)
10937 goto error;
10938
10939 i++;
10940 }
10941
10942 err = rdev_set_coalesce(rdev, &new_coalesce);
10943 if (err)
10944 goto error;
10945
10946 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10947 if (!n_coalesce) {
10948 err = -ENOMEM;
10949 goto error;
10950 }
10951 cfg80211_rdev_free_coalesce(rdev);
10952 rdev->coalesce = n_coalesce;
10953
10954 return 0;
10955error:
10956 for (i = 0; i < new_coalesce.n_rules; i++) {
10957 tmp_rule = &new_coalesce.rules[i];
10958 for (j = 0; j < tmp_rule->n_patterns; j++)
10959 kfree(tmp_rule->patterns[j].mask);
10960 kfree(tmp_rule->patterns);
10961 }
10962 kfree(new_coalesce.rules);
10963
10964 return err;
10965}
10966
10967static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10968{
10969 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10970 struct net_device *dev = info->user_ptr[1];
10971 struct wireless_dev *wdev = dev->ieee80211_ptr;
10972 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10973 struct cfg80211_gtk_rekey_data rekey_data;
10974 int err;
10975
10976 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10977 return -EINVAL;
10978
10979 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10980 info->attrs[NL80211_ATTR_REKEY_DATA],
10981 nl80211_rekey_policy, info->extack);
10982 if (err)
10983 return err;
10984
10985 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10986 !tb[NL80211_REKEY_DATA_KCK])
10987 return -EINVAL;
10988 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10989 return -ERANGE;
10990 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10991 return -ERANGE;
10992 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10993 return -ERANGE;
10994
10995 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10996 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10997 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10998
10999 wdev_lock(wdev);
11000 if (!wdev->current_bss) {
11001 err = -ENOTCONN;
11002 goto out;
11003 }
11004
11005 if (!rdev->ops->set_rekey_data) {
11006 err = -EOPNOTSUPP;
11007 goto out;
11008 }
11009
11010 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11011 out:
11012 wdev_unlock(wdev);
11013 return err;
11014}
11015
11016static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11017 struct genl_info *info)
11018{
11019 struct net_device *dev = info->user_ptr[1];
11020 struct wireless_dev *wdev = dev->ieee80211_ptr;
11021
11022 if (wdev->iftype != NL80211_IFTYPE_AP &&
11023 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11024 return -EINVAL;
11025
11026 if (wdev->ap_unexpected_nlportid)
11027 return -EBUSY;
11028
11029 wdev->ap_unexpected_nlportid = info->snd_portid;
11030 return 0;
11031}
11032
11033static int nl80211_probe_client(struct sk_buff *skb,
11034 struct genl_info *info)
11035{
11036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11037 struct net_device *dev = info->user_ptr[1];
11038 struct wireless_dev *wdev = dev->ieee80211_ptr;
11039 struct sk_buff *msg;
11040 void *hdr;
11041 const u8 *addr;
11042 u64 cookie;
11043 int err;
11044
11045 if (wdev->iftype != NL80211_IFTYPE_AP &&
11046 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11047 return -EOPNOTSUPP;
11048
11049 if (!info->attrs[NL80211_ATTR_MAC])
11050 return -EINVAL;
11051
11052 if (!rdev->ops->probe_client)
11053 return -EOPNOTSUPP;
11054
11055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11056 if (!msg)
11057 return -ENOMEM;
11058
11059 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11060 NL80211_CMD_PROBE_CLIENT);
11061 if (!hdr) {
11062 err = -ENOBUFS;
11063 goto free_msg;
11064 }
11065
11066 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11067
11068 err = rdev_probe_client(rdev, dev, addr, &cookie);
11069 if (err)
11070 goto free_msg;
11071
11072 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11073 NL80211_ATTR_PAD))
11074 goto nla_put_failure;
11075
11076 genlmsg_end(msg, hdr);
11077
11078 return genlmsg_reply(msg, info);
11079
11080 nla_put_failure:
11081 err = -ENOBUFS;
11082 free_msg:
11083 nlmsg_free(msg);
11084 return err;
11085}
11086
11087static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11088{
11089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11090 struct cfg80211_beacon_registration *reg, *nreg;
11091 int rv;
11092
11093 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11094 return -EOPNOTSUPP;
11095
11096 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11097 if (!nreg)
11098 return -ENOMEM;
11099
11100 /* First, check if already registered. */
11101 spin_lock_bh(&rdev->beacon_registrations_lock);
11102 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11103 if (reg->nlportid == info->snd_portid) {
11104 rv = -EALREADY;
11105 goto out_err;
11106 }
11107 }
11108 /* Add it to the list */
11109 nreg->nlportid = info->snd_portid;
11110 list_add(&nreg->list, &rdev->beacon_registrations);
11111
11112 spin_unlock_bh(&rdev->beacon_registrations_lock);
11113
11114 return 0;
11115out_err:
11116 spin_unlock_bh(&rdev->beacon_registrations_lock);
11117 kfree(nreg);
11118 return rv;
11119}
11120
11121static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11122{
11123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11124 struct wireless_dev *wdev = info->user_ptr[1];
11125 int err;
11126
11127 if (!rdev->ops->start_p2p_device)
11128 return -EOPNOTSUPP;
11129
11130 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11131 return -EOPNOTSUPP;
11132
11133 if (wdev_running(wdev))
11134 return 0;
11135
11136 if (rfkill_blocked(rdev->rfkill))
11137 return -ERFKILL;
11138
11139 err = rdev_start_p2p_device(rdev, wdev);
11140 if (err)
11141 return err;
11142
11143 wdev->is_running = true;
11144 rdev->opencount++;
11145
11146 return 0;
11147}
11148
11149static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11150{
11151 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11152 struct wireless_dev *wdev = info->user_ptr[1];
11153
11154 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11155 return -EOPNOTSUPP;
11156
11157 if (!rdev->ops->stop_p2p_device)
11158 return -EOPNOTSUPP;
11159
11160 cfg80211_stop_p2p_device(rdev, wdev);
11161
11162 return 0;
11163}
11164
11165static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11166{
11167 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11168 struct wireless_dev *wdev = info->user_ptr[1];
11169 struct cfg80211_nan_conf conf = {};
11170 int err;
11171
11172 if (wdev->iftype != NL80211_IFTYPE_NAN)
11173 return -EOPNOTSUPP;
11174
11175 if (wdev_running(wdev))
11176 return -EEXIST;
11177
11178 if (rfkill_blocked(rdev->rfkill))
11179 return -ERFKILL;
11180
11181 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11182 return -EINVAL;
11183
11184 conf.master_pref =
11185 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11186 if (!conf.master_pref)
11187 return -EINVAL;
11188
11189 if (info->attrs[NL80211_ATTR_BANDS]) {
11190 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11191
11192 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11193 return -EOPNOTSUPP;
11194
11195 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11196 return -EINVAL;
11197
11198 conf.bands = bands;
11199 }
11200
11201 err = rdev_start_nan(rdev, wdev, &conf);
11202 if (err)
11203 return err;
11204
11205 wdev->is_running = true;
11206 rdev->opencount++;
11207
11208 return 0;
11209}
11210
11211static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11212{
11213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11214 struct wireless_dev *wdev = info->user_ptr[1];
11215
11216 if (wdev->iftype != NL80211_IFTYPE_NAN)
11217 return -EOPNOTSUPP;
11218
11219 cfg80211_stop_nan(rdev, wdev);
11220
11221 return 0;
11222}
11223
11224static int validate_nan_filter(struct nlattr *filter_attr)
11225{
11226 struct nlattr *attr;
11227 int len = 0, n_entries = 0, rem;
11228
11229 nla_for_each_nested(attr, filter_attr, rem) {
11230 len += nla_len(attr);
11231 n_entries++;
11232 }
11233
11234 if (len >= U8_MAX)
11235 return -EINVAL;
11236
11237 return n_entries;
11238}
11239
11240static int handle_nan_filter(struct nlattr *attr_filter,
11241 struct cfg80211_nan_func *func,
11242 bool tx)
11243{
11244 struct nlattr *attr;
11245 int n_entries, rem, i;
11246 struct cfg80211_nan_func_filter *filter;
11247
11248 n_entries = validate_nan_filter(attr_filter);
11249 if (n_entries < 0)
11250 return n_entries;
11251
11252 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11253
11254 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11255 if (!filter)
11256 return -ENOMEM;
11257
11258 i = 0;
11259 nla_for_each_nested(attr, attr_filter, rem) {
11260 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11261 filter[i].len = nla_len(attr);
11262 i++;
11263 }
11264 if (tx) {
11265 func->num_tx_filters = n_entries;
11266 func->tx_filters = filter;
11267 } else {
11268 func->num_rx_filters = n_entries;
11269 func->rx_filters = filter;
11270 }
11271
11272 return 0;
11273}
11274
11275static int nl80211_nan_add_func(struct sk_buff *skb,
11276 struct genl_info *info)
11277{
11278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11279 struct wireless_dev *wdev = info->user_ptr[1];
11280 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11281 struct cfg80211_nan_func *func;
11282 struct sk_buff *msg = NULL;
11283 void *hdr = NULL;
11284 int err = 0;
11285
11286 if (wdev->iftype != NL80211_IFTYPE_NAN)
11287 return -EOPNOTSUPP;
11288
11289 if (!wdev_running(wdev))
11290 return -ENOTCONN;
11291
11292 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11293 return -EINVAL;
11294
11295 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11296 info->attrs[NL80211_ATTR_NAN_FUNC],
11297 nl80211_nan_func_policy, info->extack);
11298 if (err)
11299 return err;
11300
11301 func = kzalloc(sizeof(*func), GFP_KERNEL);
11302 if (!func)
11303 return -ENOMEM;
11304
11305 func->cookie = wdev->wiphy->cookie_counter++;
11306
11307 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11308 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11309 err = -EINVAL;
11310 goto out;
11311 }
11312
11313
11314 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11315
11316 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11317 err = -EINVAL;
11318 goto out;
11319 }
11320
11321 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11322 sizeof(func->service_id));
11323
11324 func->close_range =
11325 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11326
11327 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11328 func->serv_spec_info_len =
11329 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11330 func->serv_spec_info =
11331 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11332 func->serv_spec_info_len,
11333 GFP_KERNEL);
11334 if (!func->serv_spec_info) {
11335 err = -ENOMEM;
11336 goto out;
11337 }
11338 }
11339
11340 if (tb[NL80211_NAN_FUNC_TTL])
11341 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11342
11343 switch (func->type) {
11344 case NL80211_NAN_FUNC_PUBLISH:
11345 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11346 err = -EINVAL;
11347 goto out;
11348 }
11349
11350 func->publish_type =
11351 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11352 func->publish_bcast =
11353 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11354
11355 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11356 func->publish_bcast) {
11357 err = -EINVAL;
11358 goto out;
11359 }
11360 break;
11361 case NL80211_NAN_FUNC_SUBSCRIBE:
11362 func->subscribe_active =
11363 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11364 break;
11365 case NL80211_NAN_FUNC_FOLLOW_UP:
11366 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11367 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11368 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11369 err = -EINVAL;
11370 goto out;
11371 }
11372
11373 func->followup_id =
11374 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11375 func->followup_reqid =
11376 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11377 memcpy(func->followup_dest.addr,
11378 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11379 sizeof(func->followup_dest.addr));
11380 if (func->ttl) {
11381 err = -EINVAL;
11382 goto out;
11383 }
11384 break;
11385 default:
11386 err = -EINVAL;
11387 goto out;
11388 }
11389
11390 if (tb[NL80211_NAN_FUNC_SRF]) {
11391 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11392
11393 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11394 tb[NL80211_NAN_FUNC_SRF],
11395 nl80211_nan_srf_policy, info->extack);
11396 if (err)
11397 goto out;
11398
11399 func->srf_include =
11400 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11401
11402 if (srf_tb[NL80211_NAN_SRF_BF]) {
11403 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11404 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11405 err = -EINVAL;
11406 goto out;
11407 }
11408
11409 func->srf_bf_len =
11410 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11411 func->srf_bf =
11412 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11413 func->srf_bf_len, GFP_KERNEL);
11414 if (!func->srf_bf) {
11415 err = -ENOMEM;
11416 goto out;
11417 }
11418
11419 func->srf_bf_idx =
11420 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11421 } else {
11422 struct nlattr *attr, *mac_attr =
11423 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11424 int n_entries, rem, i = 0;
11425
11426 if (!mac_attr) {
11427 err = -EINVAL;
11428 goto out;
11429 }
11430
11431 n_entries = validate_acl_mac_addrs(mac_attr);
11432 if (n_entries <= 0) {
11433 err = -EINVAL;
11434 goto out;
11435 }
11436
11437 func->srf_num_macs = n_entries;
11438 func->srf_macs =
11439 kzalloc(sizeof(*func->srf_macs) * n_entries,
11440 GFP_KERNEL);
11441 if (!func->srf_macs) {
11442 err = -ENOMEM;
11443 goto out;
11444 }
11445
11446 nla_for_each_nested(attr, mac_attr, rem)
11447 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11448 sizeof(*func->srf_macs));
11449 }
11450 }
11451
11452 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11453 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11454 func, true);
11455 if (err)
11456 goto out;
11457 }
11458
11459 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11460 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11461 func, false);
11462 if (err)
11463 goto out;
11464 }
11465
11466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11467 if (!msg) {
11468 err = -ENOMEM;
11469 goto out;
11470 }
11471
11472 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11473 NL80211_CMD_ADD_NAN_FUNCTION);
11474 /* This can't really happen - we just allocated 4KB */
11475 if (WARN_ON(!hdr)) {
11476 err = -ENOMEM;
11477 goto out;
11478 }
11479
11480 err = rdev_add_nan_func(rdev, wdev, func);
11481out:
11482 if (err < 0) {
11483 cfg80211_free_nan_func(func);
11484 nlmsg_free(msg);
11485 return err;
11486 }
11487
11488 /* propagate the instance id and cookie to userspace */
11489 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11490 NL80211_ATTR_PAD))
11491 goto nla_put_failure;
11492
11493 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11494 if (!func_attr)
11495 goto nla_put_failure;
11496
11497 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11498 func->instance_id))
11499 goto nla_put_failure;
11500
11501 nla_nest_end(msg, func_attr);
11502
11503 genlmsg_end(msg, hdr);
11504 return genlmsg_reply(msg, info);
11505
11506nla_put_failure:
11507 nlmsg_free(msg);
11508 return -ENOBUFS;
11509}
11510
11511static int nl80211_nan_del_func(struct sk_buff *skb,
11512 struct genl_info *info)
11513{
11514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11515 struct wireless_dev *wdev = info->user_ptr[1];
11516 u64 cookie;
11517
11518 if (wdev->iftype != NL80211_IFTYPE_NAN)
11519 return -EOPNOTSUPP;
11520
11521 if (!wdev_running(wdev))
11522 return -ENOTCONN;
11523
11524 if (!info->attrs[NL80211_ATTR_COOKIE])
11525 return -EINVAL;
11526
11527 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11528
11529 rdev_del_nan_func(rdev, wdev, cookie);
11530
11531 return 0;
11532}
11533
11534static int nl80211_nan_change_config(struct sk_buff *skb,
11535 struct genl_info *info)
11536{
11537 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11538 struct wireless_dev *wdev = info->user_ptr[1];
11539 struct cfg80211_nan_conf conf = {};
11540 u32 changed = 0;
11541
11542 if (wdev->iftype != NL80211_IFTYPE_NAN)
11543 return -EOPNOTSUPP;
11544
11545 if (!wdev_running(wdev))
11546 return -ENOTCONN;
11547
11548 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11549 conf.master_pref =
11550 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11551 if (conf.master_pref <= 1 || conf.master_pref == 255)
11552 return -EINVAL;
11553
11554 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11555 }
11556
11557 if (info->attrs[NL80211_ATTR_BANDS]) {
11558 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11559
11560 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11561 return -EOPNOTSUPP;
11562
11563 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11564 return -EINVAL;
11565
11566 conf.bands = bands;
11567 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11568 }
11569
11570 if (!changed)
11571 return -EINVAL;
11572
11573 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11574}
11575
11576void cfg80211_nan_match(struct wireless_dev *wdev,
11577 struct cfg80211_nan_match_params *match, gfp_t gfp)
11578{
11579 struct wiphy *wiphy = wdev->wiphy;
11580 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11581 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11582 struct sk_buff *msg;
11583 void *hdr;
11584
11585 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11586 return;
11587
11588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11589 if (!msg)
11590 return;
11591
11592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11593 if (!hdr) {
11594 nlmsg_free(msg);
11595 return;
11596 }
11597
11598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11599 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11600 wdev->netdev->ifindex)) ||
11601 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11602 NL80211_ATTR_PAD))
11603 goto nla_put_failure;
11604
11605 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11606 NL80211_ATTR_PAD) ||
11607 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11608 goto nla_put_failure;
11609
11610 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11611 if (!match_attr)
11612 goto nla_put_failure;
11613
11614 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11615 if (!local_func_attr)
11616 goto nla_put_failure;
11617
11618 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11619 goto nla_put_failure;
11620
11621 nla_nest_end(msg, local_func_attr);
11622
11623 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11624 if (!peer_func_attr)
11625 goto nla_put_failure;
11626
11627 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11628 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11629 goto nla_put_failure;
11630
11631 if (match->info && match->info_len &&
11632 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11633 match->info))
11634 goto nla_put_failure;
11635
11636 nla_nest_end(msg, peer_func_attr);
11637 nla_nest_end(msg, match_attr);
11638 genlmsg_end(msg, hdr);
11639
11640 if (!wdev->owner_nlportid)
11641 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11642 msg, 0, NL80211_MCGRP_NAN, gfp);
11643 else
11644 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11645 wdev->owner_nlportid);
11646
11647 return;
11648
11649nla_put_failure:
11650 nlmsg_free(msg);
11651}
11652EXPORT_SYMBOL(cfg80211_nan_match);
11653
11654void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11655 u8 inst_id,
11656 enum nl80211_nan_func_term_reason reason,
11657 u64 cookie, gfp_t gfp)
11658{
11659 struct wiphy *wiphy = wdev->wiphy;
11660 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11661 struct sk_buff *msg;
11662 struct nlattr *func_attr;
11663 void *hdr;
11664
11665 if (WARN_ON(!inst_id))
11666 return;
11667
11668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11669 if (!msg)
11670 return;
11671
11672 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11673 if (!hdr) {
11674 nlmsg_free(msg);
11675 return;
11676 }
11677
11678 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11679 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11680 wdev->netdev->ifindex)) ||
11681 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11682 NL80211_ATTR_PAD))
11683 goto nla_put_failure;
11684
11685 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11686 NL80211_ATTR_PAD))
11687 goto nla_put_failure;
11688
11689 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11690 if (!func_attr)
11691 goto nla_put_failure;
11692
11693 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11694 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11695 goto nla_put_failure;
11696
11697 nla_nest_end(msg, func_attr);
11698 genlmsg_end(msg, hdr);
11699
11700 if (!wdev->owner_nlportid)
11701 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11702 msg, 0, NL80211_MCGRP_NAN, gfp);
11703 else
11704 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11705 wdev->owner_nlportid);
11706
11707 return;
11708
11709nla_put_failure:
11710 nlmsg_free(msg);
11711}
11712EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11713
11714static int nl80211_get_protocol_features(struct sk_buff *skb,
11715 struct genl_info *info)
11716{
11717 void *hdr;
11718 struct sk_buff *msg;
11719
11720 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11721 if (!msg)
11722 return -ENOMEM;
11723
11724 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11725 NL80211_CMD_GET_PROTOCOL_FEATURES);
11726 if (!hdr)
11727 goto nla_put_failure;
11728
11729 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11730 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11731 goto nla_put_failure;
11732
11733 genlmsg_end(msg, hdr);
11734 return genlmsg_reply(msg, info);
11735
11736 nla_put_failure:
11737 kfree_skb(msg);
11738 return -ENOBUFS;
11739}
11740
11741static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11742{
11743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11744 struct cfg80211_update_ft_ies_params ft_params;
11745 struct net_device *dev = info->user_ptr[1];
11746
11747 if (!rdev->ops->update_ft_ies)
11748 return -EOPNOTSUPP;
11749
11750 if (!info->attrs[NL80211_ATTR_MDID] ||
11751 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11752 return -EINVAL;
11753
11754 memset(&ft_params, 0, sizeof(ft_params));
11755 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11756 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11757 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11758
11759 return rdev_update_ft_ies(rdev, dev, &ft_params);
11760}
11761
11762static int nl80211_crit_protocol_start(struct sk_buff *skb,
11763 struct genl_info *info)
11764{
11765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11766 struct wireless_dev *wdev = info->user_ptr[1];
11767 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11768 u16 duration;
11769 int ret;
11770
11771 if (!rdev->ops->crit_proto_start)
11772 return -EOPNOTSUPP;
11773
11774 if (WARN_ON(!rdev->ops->crit_proto_stop))
11775 return -EINVAL;
11776
11777 if (rdev->crit_proto_nlportid)
11778 return -EBUSY;
11779
11780 /* determine protocol if provided */
11781 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11782 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11783
11784 if (proto >= NUM_NL80211_CRIT_PROTO)
11785 return -EINVAL;
11786
11787 /* timeout must be provided */
11788 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11789 return -EINVAL;
11790
11791 duration =
11792 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11793
11794 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11795 return -ERANGE;
11796
11797 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11798 if (!ret)
11799 rdev->crit_proto_nlportid = info->snd_portid;
11800
11801 return ret;
11802}
11803
11804static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11805 struct genl_info *info)
11806{
11807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11808 struct wireless_dev *wdev = info->user_ptr[1];
11809
11810 if (!rdev->ops->crit_proto_stop)
11811 return -EOPNOTSUPP;
11812
11813 if (rdev->crit_proto_nlportid) {
11814 rdev->crit_proto_nlportid = 0;
11815 rdev_crit_proto_stop(rdev, wdev);
11816 }
11817 return 0;
11818}
11819
11820static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11821{
11822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11823 struct wireless_dev *wdev =
11824 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11825 int i, err;
11826 u32 vid, subcmd;
11827
11828 if (!rdev->wiphy.vendor_commands)
11829 return -EOPNOTSUPP;
11830
11831 if (IS_ERR(wdev)) {
11832 err = PTR_ERR(wdev);
11833 if (err != -EINVAL)
11834 return err;
11835 wdev = NULL;
11836 } else if (wdev->wiphy != &rdev->wiphy) {
11837 return -EINVAL;
11838 }
11839
11840 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11841 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11842 return -EINVAL;
11843
11844 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11845 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11846 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11847 const struct wiphy_vendor_command *vcmd;
11848 void *data = NULL;
11849 int len = 0;
11850
11851 vcmd = &rdev->wiphy.vendor_commands[i];
11852
11853 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11854 continue;
11855
11856 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11857 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11858 if (!wdev)
11859 return -EINVAL;
11860 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11861 !wdev->netdev)
11862 return -EINVAL;
11863
11864 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11865 if (!wdev_running(wdev))
11866 return -ENETDOWN;
11867 }
11868
11869 if (!vcmd->doit)
11870 return -EOPNOTSUPP;
11871 } else {
11872 wdev = NULL;
11873 }
11874
11875 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11876 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11877 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11878 }
11879
11880 rdev->cur_cmd_info = info;
11881 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11882 data, len);
11883 rdev->cur_cmd_info = NULL;
11884 return err;
11885 }
11886
11887 return -EOPNOTSUPP;
11888}
11889
11890static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11891 struct netlink_callback *cb,
11892 struct cfg80211_registered_device **rdev,
11893 struct wireless_dev **wdev)
11894{
11895 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11896 u32 vid, subcmd;
11897 unsigned int i;
11898 int vcmd_idx = -1;
11899 int err;
11900 void *data = NULL;
11901 unsigned int data_len = 0;
11902
11903 if (cb->args[0]) {
11904 /* subtract the 1 again here */
11905 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11906 struct wireless_dev *tmp;
11907
11908 if (!wiphy)
11909 return -ENODEV;
11910 *rdev = wiphy_to_rdev(wiphy);
11911 *wdev = NULL;
11912
11913 if (cb->args[1]) {
11914 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11915 if (tmp->identifier == cb->args[1] - 1) {
11916 *wdev = tmp;
11917 break;
11918 }
11919 }
11920 }
11921
11922 /* keep rtnl locked in successful case */
11923 return 0;
11924 }
11925
11926 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11927 nl80211_fam.maxattr, nl80211_policy, NULL);
11928 if (err)
11929 return err;
11930
11931 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11932 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11933 return -EINVAL;
11934
11935 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11936 if (IS_ERR(*wdev))
11937 *wdev = NULL;
11938
11939 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11940 if (IS_ERR(*rdev))
11941 return PTR_ERR(*rdev);
11942
11943 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11944 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11945
11946 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11947 const struct wiphy_vendor_command *vcmd;
11948
11949 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11950
11951 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11952 continue;
11953
11954 if (!vcmd->dumpit)
11955 return -EOPNOTSUPP;
11956
11957 vcmd_idx = i;
11958 break;
11959 }
11960
11961 if (vcmd_idx < 0)
11962 return -EOPNOTSUPP;
11963
11964 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11965 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11966 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11967 }
11968
11969 /* 0 is the first index - add 1 to parse only once */
11970 cb->args[0] = (*rdev)->wiphy_idx + 1;
11971 /* add 1 to know if it was NULL */
11972 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11973 cb->args[2] = vcmd_idx;
11974 cb->args[3] = (unsigned long)data;
11975 cb->args[4] = data_len;
11976
11977 /* keep rtnl locked in successful case */
11978 return 0;
11979}
11980
11981static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11982 struct netlink_callback *cb)
11983{
11984 struct cfg80211_registered_device *rdev;
11985 struct wireless_dev *wdev;
11986 unsigned int vcmd_idx;
11987 const struct wiphy_vendor_command *vcmd;
11988 void *data;
11989 int data_len;
11990 int err;
11991 struct nlattr *vendor_data;
11992
11993 rtnl_lock();
11994 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11995 if (err)
11996 goto out;
11997
11998 vcmd_idx = cb->args[2];
11999 data = (void *)cb->args[3];
12000 data_len = cb->args[4];
12001 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12002
12003 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12004 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12005 if (!wdev) {
12006 err = -EINVAL;
12007 goto out;
12008 }
12009 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12010 !wdev->netdev) {
12011 err = -EINVAL;
12012 goto out;
12013 }
12014
12015 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12016 if (!wdev_running(wdev)) {
12017 err = -ENETDOWN;
12018 goto out;
12019 }
12020 }
12021 }
12022
12023 while (1) {
12024 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12025 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12026 NL80211_CMD_VENDOR);
12027 if (!hdr)
12028 break;
12029
12030 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12031 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12032 wdev_id(wdev),
12033 NL80211_ATTR_PAD))) {
12034 genlmsg_cancel(skb, hdr);
12035 break;
12036 }
12037
12038 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12039 if (!vendor_data) {
12040 genlmsg_cancel(skb, hdr);
12041 break;
12042 }
12043
12044 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12045 (unsigned long *)&cb->args[5]);
12046 nla_nest_end(skb, vendor_data);
12047
12048 if (err == -ENOBUFS || err == -ENOENT) {
12049 genlmsg_cancel(skb, hdr);
12050 break;
12051 } else if (err) {
12052 genlmsg_cancel(skb, hdr);
12053 goto out;
12054 }
12055
12056 genlmsg_end(skb, hdr);
12057 }
12058
12059 err = skb->len;
12060 out:
12061 rtnl_unlock();
12062 return err;
12063}
12064
12065struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12066 enum nl80211_commands cmd,
12067 enum nl80211_attrs attr,
12068 int approxlen)
12069{
12070 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12071
12072 if (WARN_ON(!rdev->cur_cmd_info))
12073 return NULL;
12074
12075 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12076 rdev->cur_cmd_info->snd_portid,
12077 rdev->cur_cmd_info->snd_seq,
12078 cmd, attr, NULL, GFP_KERNEL);
12079}
12080EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12081
12082int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12083{
12084 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12085 void *hdr = ((void **)skb->cb)[1];
12086 struct nlattr *data = ((void **)skb->cb)[2];
12087
12088 /* clear CB data for netlink core to own from now on */
12089 memset(skb->cb, 0, sizeof(skb->cb));
12090
12091 if (WARN_ON(!rdev->cur_cmd_info)) {
12092 kfree_skb(skb);
12093 return -EINVAL;
12094 }
12095
12096 nla_nest_end(skb, data);
12097 genlmsg_end(skb, hdr);
12098 return genlmsg_reply(skb, rdev->cur_cmd_info);
12099}
12100EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12101
12102static int nl80211_set_qos_map(struct sk_buff *skb,
12103 struct genl_info *info)
12104{
12105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12106 struct cfg80211_qos_map *qos_map = NULL;
12107 struct net_device *dev = info->user_ptr[1];
12108 u8 *pos, len, num_des, des_len, des;
12109 int ret;
12110
12111 if (!rdev->ops->set_qos_map)
12112 return -EOPNOTSUPP;
12113
12114 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12115 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12116 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12117
12118 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12119 len > IEEE80211_QOS_MAP_LEN_MAX)
12120 return -EINVAL;
12121
12122 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12123 if (!qos_map)
12124 return -ENOMEM;
12125
12126 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12127 if (num_des) {
12128 des_len = num_des *
12129 sizeof(struct cfg80211_dscp_exception);
12130 memcpy(qos_map->dscp_exception, pos, des_len);
12131 qos_map->num_des = num_des;
12132 for (des = 0; des < num_des; des++) {
12133 if (qos_map->dscp_exception[des].up > 7) {
12134 kfree(qos_map);
12135 return -EINVAL;
12136 }
12137 }
12138 pos += des_len;
12139 }
12140 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12141 }
12142
12143 wdev_lock(dev->ieee80211_ptr);
12144 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12145 if (!ret)
12146 ret = rdev_set_qos_map(rdev, dev, qos_map);
12147 wdev_unlock(dev->ieee80211_ptr);
12148
12149 kfree(qos_map);
12150 return ret;
12151}
12152
12153static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12154{
12155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12156 struct net_device *dev = info->user_ptr[1];
12157 struct wireless_dev *wdev = dev->ieee80211_ptr;
12158 const u8 *peer;
12159 u8 tsid, up;
12160 u16 admitted_time = 0;
12161 int err;
12162
12163 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12164 return -EOPNOTSUPP;
12165
12166 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12167 !info->attrs[NL80211_ATTR_USER_PRIO])
12168 return -EINVAL;
12169
12170 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12171 if (tsid >= IEEE80211_NUM_TIDS)
12172 return -EINVAL;
12173
12174 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12175 if (up >= IEEE80211_NUM_UPS)
12176 return -EINVAL;
12177
12178 /* WMM uses TIDs 0-7 even for TSPEC */
12179 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12180 /* TODO: handle 802.11 TSPEC/admission control
12181 * need more attributes for that (e.g. BA session requirement);
12182 * change the WMM adminssion test above to allow both then
12183 */
12184 return -EINVAL;
12185 }
12186
12187 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12188
12189 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12190 admitted_time =
12191 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12192 if (!admitted_time)
12193 return -EINVAL;
12194 }
12195
12196 wdev_lock(wdev);
12197 switch (wdev->iftype) {
12198 case NL80211_IFTYPE_STATION:
12199 case NL80211_IFTYPE_P2P_CLIENT:
12200 if (wdev->current_bss)
12201 break;
12202 err = -ENOTCONN;
12203 goto out;
12204 default:
12205 err = -EOPNOTSUPP;
12206 goto out;
12207 }
12208
12209 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12210
12211 out:
12212 wdev_unlock(wdev);
12213 return err;
12214}
12215
12216static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12217{
12218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12219 struct net_device *dev = info->user_ptr[1];
12220 struct wireless_dev *wdev = dev->ieee80211_ptr;
12221 const u8 *peer;
12222 u8 tsid;
12223 int err;
12224
12225 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12226 return -EINVAL;
12227
12228 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12229 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12230
12231 wdev_lock(wdev);
12232 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12233 wdev_unlock(wdev);
12234
12235 return err;
12236}
12237
12238static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12239 struct genl_info *info)
12240{
12241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12242 struct net_device *dev = info->user_ptr[1];
12243 struct wireless_dev *wdev = dev->ieee80211_ptr;
12244 struct cfg80211_chan_def chandef = {};
12245 const u8 *addr;
12246 u8 oper_class;
12247 int err;
12248
12249 if (!rdev->ops->tdls_channel_switch ||
12250 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12251 return -EOPNOTSUPP;
12252
12253 switch (dev->ieee80211_ptr->iftype) {
12254 case NL80211_IFTYPE_STATION:
12255 case NL80211_IFTYPE_P2P_CLIENT:
12256 break;
12257 default:
12258 return -EOPNOTSUPP;
12259 }
12260
12261 if (!info->attrs[NL80211_ATTR_MAC] ||
12262 !info->attrs[NL80211_ATTR_OPER_CLASS])
12263 return -EINVAL;
12264
12265 err = nl80211_parse_chandef(rdev, info, &chandef);
12266 if (err)
12267 return err;
12268
12269 /*
12270 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12271 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12272 * specification is not defined for them.
12273 */
12274 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12275 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12276 chandef.width != NL80211_CHAN_WIDTH_20)
12277 return -EINVAL;
12278
12279 /* we will be active on the TDLS link */
12280 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12281 wdev->iftype))
12282 return -EINVAL;
12283
12284 /* don't allow switching to DFS channels */
12285 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12286 return -EINVAL;
12287
12288 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12289 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12290
12291 wdev_lock(wdev);
12292 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12293 wdev_unlock(wdev);
12294
12295 return err;
12296}
12297
12298static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12299 struct genl_info *info)
12300{
12301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12302 struct net_device *dev = info->user_ptr[1];
12303 struct wireless_dev *wdev = dev->ieee80211_ptr;
12304 const u8 *addr;
12305
12306 if (!rdev->ops->tdls_channel_switch ||
12307 !rdev->ops->tdls_cancel_channel_switch ||
12308 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12309 return -EOPNOTSUPP;
12310
12311 switch (dev->ieee80211_ptr->iftype) {
12312 case NL80211_IFTYPE_STATION:
12313 case NL80211_IFTYPE_P2P_CLIENT:
12314 break;
12315 default:
12316 return -EOPNOTSUPP;
12317 }
12318
12319 if (!info->attrs[NL80211_ATTR_MAC])
12320 return -EINVAL;
12321
12322 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12323
12324 wdev_lock(wdev);
12325 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12326 wdev_unlock(wdev);
12327
12328 return 0;
12329}
12330
12331static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12332 struct genl_info *info)
12333{
12334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12335 struct net_device *dev = info->user_ptr[1];
12336 struct wireless_dev *wdev = dev->ieee80211_ptr;
12337 const struct nlattr *nla;
12338 bool enabled;
12339
12340 if (!rdev->ops->set_multicast_to_unicast)
12341 return -EOPNOTSUPP;
12342
12343 if (wdev->iftype != NL80211_IFTYPE_AP &&
12344 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12345 return -EOPNOTSUPP;
12346
12347 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12348 enabled = nla_get_flag(nla);
12349
12350 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12351}
12352
12353static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12354{
12355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12356 struct net_device *dev = info->user_ptr[1];
12357 struct wireless_dev *wdev = dev->ieee80211_ptr;
12358 struct cfg80211_pmk_conf pmk_conf = {};
12359 int ret;
12360
12361 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12362 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12363 return -EOPNOTSUPP;
12364
12365 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12366 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12367 return -EOPNOTSUPP;
12368
12369 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12370 return -EINVAL;
12371
12372 wdev_lock(wdev);
12373 if (!wdev->current_bss) {
12374 ret = -ENOTCONN;
12375 goto out;
12376 }
12377
12378 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12379 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12380 ret = -EINVAL;
12381 goto out;
12382 }
12383
12384 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12385 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12386 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12387 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12388 ret = -EINVAL;
12389 goto out;
12390 }
12391
12392 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12393 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12394
12395 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12396 ret = -EINVAL;
12397 goto out;
12398 }
12399
12400 pmk_conf.pmk_r0_name =
12401 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12402 }
12403
12404 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12405out:
12406 wdev_unlock(wdev);
12407 return ret;
12408}
12409
12410static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12411{
12412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12413 struct net_device *dev = info->user_ptr[1];
12414 struct wireless_dev *wdev = dev->ieee80211_ptr;
12415 const u8 *aa;
12416 int ret;
12417
12418 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12419 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12420 return -EOPNOTSUPP;
12421
12422 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12423 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12424 return -EOPNOTSUPP;
12425
12426 if (!info->attrs[NL80211_ATTR_MAC])
12427 return -EINVAL;
12428
12429 wdev_lock(wdev);
12430 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12431 ret = rdev_del_pmk(rdev, dev, aa);
12432 wdev_unlock(wdev);
12433
12434 return ret;
12435}
12436
12437#define NL80211_FLAG_NEED_WIPHY 0x01
12438#define NL80211_FLAG_NEED_NETDEV 0x02
12439#define NL80211_FLAG_NEED_RTNL 0x04
12440#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12441#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12442 NL80211_FLAG_CHECK_NETDEV_UP)
12443#define NL80211_FLAG_NEED_WDEV 0x10
12444/* If a netdev is associated, it must be UP, P2P must be started */
12445#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12446 NL80211_FLAG_CHECK_NETDEV_UP)
12447#define NL80211_FLAG_CLEAR_SKB 0x20
12448
12449static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12450 struct genl_info *info)
12451{
12452 struct cfg80211_registered_device *rdev;
12453 struct wireless_dev *wdev;
12454 struct net_device *dev;
12455 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12456
12457 if (rtnl)
12458 rtnl_lock();
12459
12460 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12461 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12462 if (IS_ERR(rdev)) {
12463 if (rtnl)
12464 rtnl_unlock();
12465 return PTR_ERR(rdev);
12466 }
12467 info->user_ptr[0] = rdev;
12468 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12469 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12470 ASSERT_RTNL();
12471
12472 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12473 info->attrs);
12474 if (IS_ERR(wdev)) {
12475 if (rtnl)
12476 rtnl_unlock();
12477 return PTR_ERR(wdev);
12478 }
12479
12480 dev = wdev->netdev;
12481 rdev = wiphy_to_rdev(wdev->wiphy);
12482
12483 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12484 if (!dev) {
12485 if (rtnl)
12486 rtnl_unlock();
12487 return -EINVAL;
12488 }
12489
12490 info->user_ptr[1] = dev;
12491 } else {
12492 info->user_ptr[1] = wdev;
12493 }
12494
12495 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12496 !wdev_running(wdev)) {
12497 if (rtnl)
12498 rtnl_unlock();
12499 return -ENETDOWN;
12500 }
12501
12502 if (dev)
12503 dev_hold(dev);
12504
12505 info->user_ptr[0] = rdev;
12506 }
12507
12508 return 0;
12509}
12510
12511static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12512 struct genl_info *info)
12513{
12514 if (info->user_ptr[1]) {
12515 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12516 struct wireless_dev *wdev = info->user_ptr[1];
12517
12518 if (wdev->netdev)
12519 dev_put(wdev->netdev);
12520 } else {
12521 dev_put(info->user_ptr[1]);
12522 }
12523 }
12524
12525 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12526 rtnl_unlock();
12527
12528 /* If needed, clear the netlink message payload from the SKB
12529 * as it might contain key data that shouldn't stick around on
12530 * the heap after the SKB is freed. The netlink message header
12531 * is still needed for further processing, so leave it intact.
12532 */
12533 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12534 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12535
12536 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12537 }
12538}
12539
12540static const struct genl_ops nl80211_ops[] = {
12541 {
12542 .cmd = NL80211_CMD_GET_WIPHY,
12543 .doit = nl80211_get_wiphy,
12544 .dumpit = nl80211_dump_wiphy,
12545 .done = nl80211_dump_wiphy_done,
12546 .policy = nl80211_policy,
12547 /* can be retrieved by unprivileged users */
12548 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12549 NL80211_FLAG_NEED_RTNL,
12550 },
12551 {
12552 .cmd = NL80211_CMD_SET_WIPHY,
12553 .doit = nl80211_set_wiphy,
12554 .policy = nl80211_policy,
12555 .flags = GENL_UNS_ADMIN_PERM,
12556 .internal_flags = NL80211_FLAG_NEED_RTNL,
12557 },
12558 {
12559 .cmd = NL80211_CMD_GET_INTERFACE,
12560 .doit = nl80211_get_interface,
12561 .dumpit = nl80211_dump_interface,
12562 .policy = nl80211_policy,
12563 /* can be retrieved by unprivileged users */
12564 .internal_flags = NL80211_FLAG_NEED_WDEV |
12565 NL80211_FLAG_NEED_RTNL,
12566 },
12567 {
12568 .cmd = NL80211_CMD_SET_INTERFACE,
12569 .doit = nl80211_set_interface,
12570 .policy = nl80211_policy,
12571 .flags = GENL_UNS_ADMIN_PERM,
12572 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12573 NL80211_FLAG_NEED_RTNL,
12574 },
12575 {
12576 .cmd = NL80211_CMD_NEW_INTERFACE,
12577 .doit = nl80211_new_interface,
12578 .policy = nl80211_policy,
12579 .flags = GENL_UNS_ADMIN_PERM,
12580 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12581 NL80211_FLAG_NEED_RTNL,
12582 },
12583 {
12584 .cmd = NL80211_CMD_DEL_INTERFACE,
12585 .doit = nl80211_del_interface,
12586 .policy = nl80211_policy,
12587 .flags = GENL_UNS_ADMIN_PERM,
12588 .internal_flags = NL80211_FLAG_NEED_WDEV |
12589 NL80211_FLAG_NEED_RTNL,
12590 },
12591 {
12592 .cmd = NL80211_CMD_GET_KEY,
12593 .doit = nl80211_get_key,
12594 .policy = nl80211_policy,
12595 .flags = GENL_UNS_ADMIN_PERM,
12596 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12597 NL80211_FLAG_NEED_RTNL,
12598 },
12599 {
12600 .cmd = NL80211_CMD_SET_KEY,
12601 .doit = nl80211_set_key,
12602 .policy = nl80211_policy,
12603 .flags = GENL_UNS_ADMIN_PERM,
12604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12605 NL80211_FLAG_NEED_RTNL |
12606 NL80211_FLAG_CLEAR_SKB,
12607 },
12608 {
12609 .cmd = NL80211_CMD_NEW_KEY,
12610 .doit = nl80211_new_key,
12611 .policy = nl80211_policy,
12612 .flags = GENL_UNS_ADMIN_PERM,
12613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12614 NL80211_FLAG_NEED_RTNL |
12615 NL80211_FLAG_CLEAR_SKB,
12616 },
12617 {
12618 .cmd = NL80211_CMD_DEL_KEY,
12619 .doit = nl80211_del_key,
12620 .policy = nl80211_policy,
12621 .flags = GENL_UNS_ADMIN_PERM,
12622 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12623 NL80211_FLAG_NEED_RTNL,
12624 },
12625 {
12626 .cmd = NL80211_CMD_SET_BEACON,
12627 .policy = nl80211_policy,
12628 .flags = GENL_UNS_ADMIN_PERM,
12629 .doit = nl80211_set_beacon,
12630 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12631 NL80211_FLAG_NEED_RTNL,
12632 },
12633 {
12634 .cmd = NL80211_CMD_START_AP,
12635 .policy = nl80211_policy,
12636 .flags = GENL_UNS_ADMIN_PERM,
12637 .doit = nl80211_start_ap,
12638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12639 NL80211_FLAG_NEED_RTNL,
12640 },
12641 {
12642 .cmd = NL80211_CMD_STOP_AP,
12643 .policy = nl80211_policy,
12644 .flags = GENL_UNS_ADMIN_PERM,
12645 .doit = nl80211_stop_ap,
12646 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12647 NL80211_FLAG_NEED_RTNL,
12648 },
12649 {
12650 .cmd = NL80211_CMD_GET_STATION,
12651 .doit = nl80211_get_station,
12652 .dumpit = nl80211_dump_station,
12653 .policy = nl80211_policy,
12654 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12655 NL80211_FLAG_NEED_RTNL,
12656 },
12657 {
12658 .cmd = NL80211_CMD_SET_STATION,
12659 .doit = nl80211_set_station,
12660 .policy = nl80211_policy,
12661 .flags = GENL_UNS_ADMIN_PERM,
12662 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12663 NL80211_FLAG_NEED_RTNL,
12664 },
12665 {
12666 .cmd = NL80211_CMD_NEW_STATION,
12667 .doit = nl80211_new_station,
12668 .policy = nl80211_policy,
12669 .flags = GENL_UNS_ADMIN_PERM,
12670 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12671 NL80211_FLAG_NEED_RTNL,
12672 },
12673 {
12674 .cmd = NL80211_CMD_DEL_STATION,
12675 .doit = nl80211_del_station,
12676 .policy = nl80211_policy,
12677 .flags = GENL_UNS_ADMIN_PERM,
12678 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12679 NL80211_FLAG_NEED_RTNL,
12680 },
12681 {
12682 .cmd = NL80211_CMD_GET_MPATH,
12683 .doit = nl80211_get_mpath,
12684 .dumpit = nl80211_dump_mpath,
12685 .policy = nl80211_policy,
12686 .flags = GENL_UNS_ADMIN_PERM,
12687 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12688 NL80211_FLAG_NEED_RTNL,
12689 },
12690 {
12691 .cmd = NL80211_CMD_GET_MPP,
12692 .doit = nl80211_get_mpp,
12693 .dumpit = nl80211_dump_mpp,
12694 .policy = nl80211_policy,
12695 .flags = GENL_UNS_ADMIN_PERM,
12696 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12697 NL80211_FLAG_NEED_RTNL,
12698 },
12699 {
12700 .cmd = NL80211_CMD_SET_MPATH,
12701 .doit = nl80211_set_mpath,
12702 .policy = nl80211_policy,
12703 .flags = GENL_UNS_ADMIN_PERM,
12704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12705 NL80211_FLAG_NEED_RTNL,
12706 },
12707 {
12708 .cmd = NL80211_CMD_NEW_MPATH,
12709 .doit = nl80211_new_mpath,
12710 .policy = nl80211_policy,
12711 .flags = GENL_UNS_ADMIN_PERM,
12712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12713 NL80211_FLAG_NEED_RTNL,
12714 },
12715 {
12716 .cmd = NL80211_CMD_DEL_MPATH,
12717 .doit = nl80211_del_mpath,
12718 .policy = nl80211_policy,
12719 .flags = GENL_UNS_ADMIN_PERM,
12720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12721 NL80211_FLAG_NEED_RTNL,
12722 },
12723 {
12724 .cmd = NL80211_CMD_SET_BSS,
12725 .doit = nl80211_set_bss,
12726 .policy = nl80211_policy,
12727 .flags = GENL_UNS_ADMIN_PERM,
12728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12729 NL80211_FLAG_NEED_RTNL,
12730 },
12731 {
12732 .cmd = NL80211_CMD_GET_REG,
12733 .doit = nl80211_get_reg_do,
12734 .dumpit = nl80211_get_reg_dump,
12735 .policy = nl80211_policy,
12736 .internal_flags = NL80211_FLAG_NEED_RTNL,
12737 /* can be retrieved by unprivileged users */
12738 },
12739#ifdef CONFIG_CFG80211_CRDA_SUPPORT
12740 {
12741 .cmd = NL80211_CMD_SET_REG,
12742 .doit = nl80211_set_reg,
12743 .policy = nl80211_policy,
12744 .flags = GENL_ADMIN_PERM,
12745 .internal_flags = NL80211_FLAG_NEED_RTNL,
12746 },
12747#endif
12748 {
12749 .cmd = NL80211_CMD_REQ_SET_REG,
12750 .doit = nl80211_req_set_reg,
12751 .policy = nl80211_policy,
12752 .flags = GENL_ADMIN_PERM,
12753 },
12754 {
12755 .cmd = NL80211_CMD_RELOAD_REGDB,
12756 .doit = nl80211_reload_regdb,
12757 .policy = nl80211_policy,
12758 .flags = GENL_ADMIN_PERM,
12759 },
12760 {
12761 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12762 .doit = nl80211_get_mesh_config,
12763 .policy = nl80211_policy,
12764 /* can be retrieved by unprivileged users */
12765 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12766 NL80211_FLAG_NEED_RTNL,
12767 },
12768 {
12769 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12770 .doit = nl80211_update_mesh_config,
12771 .policy = nl80211_policy,
12772 .flags = GENL_UNS_ADMIN_PERM,
12773 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12774 NL80211_FLAG_NEED_RTNL,
12775 },
12776 {
12777 .cmd = NL80211_CMD_TRIGGER_SCAN,
12778 .doit = nl80211_trigger_scan,
12779 .policy = nl80211_policy,
12780 .flags = GENL_UNS_ADMIN_PERM,
12781 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12782 NL80211_FLAG_NEED_RTNL,
12783 },
12784 {
12785 .cmd = NL80211_CMD_ABORT_SCAN,
12786 .doit = nl80211_abort_scan,
12787 .policy = nl80211_policy,
12788 .flags = GENL_UNS_ADMIN_PERM,
12789 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12790 NL80211_FLAG_NEED_RTNL,
12791 },
12792 {
12793 .cmd = NL80211_CMD_GET_SCAN,
12794 .policy = nl80211_policy,
12795 .dumpit = nl80211_dump_scan,
12796 },
12797 {
12798 .cmd = NL80211_CMD_START_SCHED_SCAN,
12799 .doit = nl80211_start_sched_scan,
12800 .policy = nl80211_policy,
12801 .flags = GENL_UNS_ADMIN_PERM,
12802 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12803 NL80211_FLAG_NEED_RTNL,
12804 },
12805 {
12806 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12807 .doit = nl80211_stop_sched_scan,
12808 .policy = nl80211_policy,
12809 .flags = GENL_UNS_ADMIN_PERM,
12810 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12811 NL80211_FLAG_NEED_RTNL,
12812 },
12813 {
12814 .cmd = NL80211_CMD_AUTHENTICATE,
12815 .doit = nl80211_authenticate,
12816 .policy = nl80211_policy,
12817 .flags = GENL_UNS_ADMIN_PERM,
12818 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12819 NL80211_FLAG_NEED_RTNL |
12820 NL80211_FLAG_CLEAR_SKB,
12821 },
12822 {
12823 .cmd = NL80211_CMD_ASSOCIATE,
12824 .doit = nl80211_associate,
12825 .policy = nl80211_policy,
12826 .flags = GENL_UNS_ADMIN_PERM,
12827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12828 NL80211_FLAG_NEED_RTNL,
12829 },
12830 {
12831 .cmd = NL80211_CMD_DEAUTHENTICATE,
12832 .doit = nl80211_deauthenticate,
12833 .policy = nl80211_policy,
12834 .flags = GENL_UNS_ADMIN_PERM,
12835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12836 NL80211_FLAG_NEED_RTNL,
12837 },
12838 {
12839 .cmd = NL80211_CMD_DISASSOCIATE,
12840 .doit = nl80211_disassociate,
12841 .policy = nl80211_policy,
12842 .flags = GENL_UNS_ADMIN_PERM,
12843 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12844 NL80211_FLAG_NEED_RTNL,
12845 },
12846 {
12847 .cmd = NL80211_CMD_JOIN_IBSS,
12848 .doit = nl80211_join_ibss,
12849 .policy = nl80211_policy,
12850 .flags = GENL_UNS_ADMIN_PERM,
12851 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12852 NL80211_FLAG_NEED_RTNL,
12853 },
12854 {
12855 .cmd = NL80211_CMD_LEAVE_IBSS,
12856 .doit = nl80211_leave_ibss,
12857 .policy = nl80211_policy,
12858 .flags = GENL_UNS_ADMIN_PERM,
12859 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12860 NL80211_FLAG_NEED_RTNL,
12861 },
12862#ifdef CONFIG_NL80211_TESTMODE
12863 {
12864 .cmd = NL80211_CMD_TESTMODE,
12865 .doit = nl80211_testmode_do,
12866 .dumpit = nl80211_testmode_dump,
12867 .policy = nl80211_policy,
12868 .flags = GENL_UNS_ADMIN_PERM,
12869 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12870 NL80211_FLAG_NEED_RTNL,
12871 },
12872#endif
12873 {
12874 .cmd = NL80211_CMD_CONNECT,
12875 .doit = nl80211_connect,
12876 .policy = nl80211_policy,
12877 .flags = GENL_UNS_ADMIN_PERM,
12878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12879 NL80211_FLAG_NEED_RTNL,
12880 },
12881 {
12882 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12883 .doit = nl80211_update_connect_params,
12884 .policy = nl80211_policy,
12885 .flags = GENL_ADMIN_PERM,
12886 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12887 NL80211_FLAG_NEED_RTNL,
12888 },
12889 {
12890 .cmd = NL80211_CMD_DISCONNECT,
12891 .doit = nl80211_disconnect,
12892 .policy = nl80211_policy,
12893 .flags = GENL_UNS_ADMIN_PERM,
12894 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12895 NL80211_FLAG_NEED_RTNL,
12896 },
12897 {
12898 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12899 .doit = nl80211_wiphy_netns,
12900 .policy = nl80211_policy,
12901 .flags = GENL_UNS_ADMIN_PERM,
12902 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12903 NL80211_FLAG_NEED_RTNL,
12904 },
12905 {
12906 .cmd = NL80211_CMD_GET_SURVEY,
12907 .policy = nl80211_policy,
12908 .dumpit = nl80211_dump_survey,
12909 },
12910 {
12911 .cmd = NL80211_CMD_SET_PMKSA,
12912 .doit = nl80211_setdel_pmksa,
12913 .policy = nl80211_policy,
12914 .flags = GENL_UNS_ADMIN_PERM,
12915 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12916 NL80211_FLAG_NEED_RTNL,
12917 },
12918 {
12919 .cmd = NL80211_CMD_DEL_PMKSA,
12920 .doit = nl80211_setdel_pmksa,
12921 .policy = nl80211_policy,
12922 .flags = GENL_UNS_ADMIN_PERM,
12923 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12924 NL80211_FLAG_NEED_RTNL,
12925 },
12926 {
12927 .cmd = NL80211_CMD_FLUSH_PMKSA,
12928 .doit = nl80211_flush_pmksa,
12929 .policy = nl80211_policy,
12930 .flags = GENL_UNS_ADMIN_PERM,
12931 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12932 NL80211_FLAG_NEED_RTNL,
12933 },
12934 {
12935 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12936 .doit = nl80211_remain_on_channel,
12937 .policy = nl80211_policy,
12938 .flags = GENL_UNS_ADMIN_PERM,
12939 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12940 NL80211_FLAG_NEED_RTNL,
12941 },
12942 {
12943 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12944 .doit = nl80211_cancel_remain_on_channel,
12945 .policy = nl80211_policy,
12946 .flags = GENL_UNS_ADMIN_PERM,
12947 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12948 NL80211_FLAG_NEED_RTNL,
12949 },
12950 {
12951 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12952 .doit = nl80211_set_tx_bitrate_mask,
12953 .policy = nl80211_policy,
12954 .flags = GENL_UNS_ADMIN_PERM,
12955 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12956 NL80211_FLAG_NEED_RTNL,
12957 },
12958 {
12959 .cmd = NL80211_CMD_REGISTER_FRAME,
12960 .doit = nl80211_register_mgmt,
12961 .policy = nl80211_policy,
12962 .flags = GENL_UNS_ADMIN_PERM,
12963 .internal_flags = NL80211_FLAG_NEED_WDEV |
12964 NL80211_FLAG_NEED_RTNL,
12965 },
12966 {
12967 .cmd = NL80211_CMD_FRAME,
12968 .doit = nl80211_tx_mgmt,
12969 .policy = nl80211_policy,
12970 .flags = GENL_UNS_ADMIN_PERM,
12971 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12972 NL80211_FLAG_NEED_RTNL,
12973 },
12974 {
12975 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12976 .doit = nl80211_tx_mgmt_cancel_wait,
12977 .policy = nl80211_policy,
12978 .flags = GENL_UNS_ADMIN_PERM,
12979 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12980 NL80211_FLAG_NEED_RTNL,
12981 },
12982 {
12983 .cmd = NL80211_CMD_SET_POWER_SAVE,
12984 .doit = nl80211_set_power_save,
12985 .policy = nl80211_policy,
12986 .flags = GENL_UNS_ADMIN_PERM,
12987 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12988 NL80211_FLAG_NEED_RTNL,
12989 },
12990 {
12991 .cmd = NL80211_CMD_GET_POWER_SAVE,
12992 .doit = nl80211_get_power_save,
12993 .policy = nl80211_policy,
12994 /* can be retrieved by unprivileged users */
12995 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12996 NL80211_FLAG_NEED_RTNL,
12997 },
12998 {
12999 .cmd = NL80211_CMD_SET_CQM,
13000 .doit = nl80211_set_cqm,
13001 .policy = nl80211_policy,
13002 .flags = GENL_UNS_ADMIN_PERM,
13003 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13004 NL80211_FLAG_NEED_RTNL,
13005 },
13006 {
13007 .cmd = NL80211_CMD_SET_CHANNEL,
13008 .doit = nl80211_set_channel,
13009 .policy = nl80211_policy,
13010 .flags = GENL_UNS_ADMIN_PERM,
13011 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13012 NL80211_FLAG_NEED_RTNL,
13013 },
13014 {
13015 .cmd = NL80211_CMD_SET_WDS_PEER,
13016 .doit = nl80211_set_wds_peer,
13017 .policy = nl80211_policy,
13018 .flags = GENL_UNS_ADMIN_PERM,
13019 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13020 NL80211_FLAG_NEED_RTNL,
13021 },
13022 {
13023 .cmd = NL80211_CMD_JOIN_MESH,
13024 .doit = nl80211_join_mesh,
13025 .policy = nl80211_policy,
13026 .flags = GENL_UNS_ADMIN_PERM,
13027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13028 NL80211_FLAG_NEED_RTNL,
13029 },
13030 {
13031 .cmd = NL80211_CMD_LEAVE_MESH,
13032 .doit = nl80211_leave_mesh,
13033 .policy = nl80211_policy,
13034 .flags = GENL_UNS_ADMIN_PERM,
13035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13036 NL80211_FLAG_NEED_RTNL,
13037 },
13038 {
13039 .cmd = NL80211_CMD_JOIN_OCB,
13040 .doit = nl80211_join_ocb,
13041 .policy = nl80211_policy,
13042 .flags = GENL_UNS_ADMIN_PERM,
13043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13044 NL80211_FLAG_NEED_RTNL,
13045 },
13046 {
13047 .cmd = NL80211_CMD_LEAVE_OCB,
13048 .doit = nl80211_leave_ocb,
13049 .policy = nl80211_policy,
13050 .flags = GENL_UNS_ADMIN_PERM,
13051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13052 NL80211_FLAG_NEED_RTNL,
13053 },
13054#ifdef CONFIG_PM
13055 {
13056 .cmd = NL80211_CMD_GET_WOWLAN,
13057 .doit = nl80211_get_wowlan,
13058 .policy = nl80211_policy,
13059 /* can be retrieved by unprivileged users */
13060 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13061 NL80211_FLAG_NEED_RTNL,
13062 },
13063 {
13064 .cmd = NL80211_CMD_SET_WOWLAN,
13065 .doit = nl80211_set_wowlan,
13066 .policy = nl80211_policy,
13067 .flags = GENL_UNS_ADMIN_PERM,
13068 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13069 NL80211_FLAG_NEED_RTNL,
13070 },
13071#endif
13072 {
13073 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13074 .doit = nl80211_set_rekey_data,
13075 .policy = nl80211_policy,
13076 .flags = GENL_UNS_ADMIN_PERM,
13077 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13078 NL80211_FLAG_NEED_RTNL |
13079 NL80211_FLAG_CLEAR_SKB,
13080 },
13081 {
13082 .cmd = NL80211_CMD_TDLS_MGMT,
13083 .doit = nl80211_tdls_mgmt,
13084 .policy = nl80211_policy,
13085 .flags = GENL_UNS_ADMIN_PERM,
13086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13087 NL80211_FLAG_NEED_RTNL,
13088 },
13089 {
13090 .cmd = NL80211_CMD_TDLS_OPER,
13091 .doit = nl80211_tdls_oper,
13092 .policy = nl80211_policy,
13093 .flags = GENL_UNS_ADMIN_PERM,
13094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13095 NL80211_FLAG_NEED_RTNL,
13096 },
13097 {
13098 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13099 .doit = nl80211_register_unexpected_frame,
13100 .policy = nl80211_policy,
13101 .flags = GENL_UNS_ADMIN_PERM,
13102 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13103 NL80211_FLAG_NEED_RTNL,
13104 },
13105 {
13106 .cmd = NL80211_CMD_PROBE_CLIENT,
13107 .doit = nl80211_probe_client,
13108 .policy = nl80211_policy,
13109 .flags = GENL_UNS_ADMIN_PERM,
13110 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13111 NL80211_FLAG_NEED_RTNL,
13112 },
13113 {
13114 .cmd = NL80211_CMD_REGISTER_BEACONS,
13115 .doit = nl80211_register_beacons,
13116 .policy = nl80211_policy,
13117 .flags = GENL_UNS_ADMIN_PERM,
13118 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13119 NL80211_FLAG_NEED_RTNL,
13120 },
13121 {
13122 .cmd = NL80211_CMD_SET_NOACK_MAP,
13123 .doit = nl80211_set_noack_map,
13124 .policy = nl80211_policy,
13125 .flags = GENL_UNS_ADMIN_PERM,
13126 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13127 NL80211_FLAG_NEED_RTNL,
13128 },
13129 {
13130 .cmd = NL80211_CMD_START_P2P_DEVICE,
13131 .doit = nl80211_start_p2p_device,
13132 .policy = nl80211_policy,
13133 .flags = GENL_UNS_ADMIN_PERM,
13134 .internal_flags = NL80211_FLAG_NEED_WDEV |
13135 NL80211_FLAG_NEED_RTNL,
13136 },
13137 {
13138 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13139 .doit = nl80211_stop_p2p_device,
13140 .policy = nl80211_policy,
13141 .flags = GENL_UNS_ADMIN_PERM,
13142 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13143 NL80211_FLAG_NEED_RTNL,
13144 },
13145 {
13146 .cmd = NL80211_CMD_START_NAN,
13147 .doit = nl80211_start_nan,
13148 .policy = nl80211_policy,
13149 .flags = GENL_ADMIN_PERM,
13150 .internal_flags = NL80211_FLAG_NEED_WDEV |
13151 NL80211_FLAG_NEED_RTNL,
13152 },
13153 {
13154 .cmd = NL80211_CMD_STOP_NAN,
13155 .doit = nl80211_stop_nan,
13156 .policy = nl80211_policy,
13157 .flags = GENL_ADMIN_PERM,
13158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13159 NL80211_FLAG_NEED_RTNL,
13160 },
13161 {
13162 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13163 .doit = nl80211_nan_add_func,
13164 .policy = nl80211_policy,
13165 .flags = GENL_ADMIN_PERM,
13166 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13167 NL80211_FLAG_NEED_RTNL,
13168 },
13169 {
13170 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13171 .doit = nl80211_nan_del_func,
13172 .policy = nl80211_policy,
13173 .flags = GENL_ADMIN_PERM,
13174 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13175 NL80211_FLAG_NEED_RTNL,
13176 },
13177 {
13178 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13179 .doit = nl80211_nan_change_config,
13180 .policy = nl80211_policy,
13181 .flags = GENL_ADMIN_PERM,
13182 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13183 NL80211_FLAG_NEED_RTNL,
13184 },
13185 {
13186 .cmd = NL80211_CMD_SET_MCAST_RATE,
13187 .doit = nl80211_set_mcast_rate,
13188 .policy = nl80211_policy,
13189 .flags = GENL_UNS_ADMIN_PERM,
13190 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13191 NL80211_FLAG_NEED_RTNL,
13192 },
13193 {
13194 .cmd = NL80211_CMD_SET_MAC_ACL,
13195 .doit = nl80211_set_mac_acl,
13196 .policy = nl80211_policy,
13197 .flags = GENL_UNS_ADMIN_PERM,
13198 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13199 NL80211_FLAG_NEED_RTNL,
13200 },
13201 {
13202 .cmd = NL80211_CMD_RADAR_DETECT,
13203 .doit = nl80211_start_radar_detection,
13204 .policy = nl80211_policy,
13205 .flags = GENL_UNS_ADMIN_PERM,
13206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13207 NL80211_FLAG_NEED_RTNL,
13208 },
13209 {
13210 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13211 .doit = nl80211_get_protocol_features,
13212 .policy = nl80211_policy,
13213 },
13214 {
13215 .cmd = NL80211_CMD_UPDATE_FT_IES,
13216 .doit = nl80211_update_ft_ies,
13217 .policy = nl80211_policy,
13218 .flags = GENL_UNS_ADMIN_PERM,
13219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13220 NL80211_FLAG_NEED_RTNL,
13221 },
13222 {
13223 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13224 .doit = nl80211_crit_protocol_start,
13225 .policy = nl80211_policy,
13226 .flags = GENL_UNS_ADMIN_PERM,
13227 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13228 NL80211_FLAG_NEED_RTNL,
13229 },
13230 {
13231 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13232 .doit = nl80211_crit_protocol_stop,
13233 .policy = nl80211_policy,
13234 .flags = GENL_UNS_ADMIN_PERM,
13235 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13236 NL80211_FLAG_NEED_RTNL,
13237 },
13238 {
13239 .cmd = NL80211_CMD_GET_COALESCE,
13240 .doit = nl80211_get_coalesce,
13241 .policy = nl80211_policy,
13242 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13243 NL80211_FLAG_NEED_RTNL,
13244 },
13245 {
13246 .cmd = NL80211_CMD_SET_COALESCE,
13247 .doit = nl80211_set_coalesce,
13248 .policy = nl80211_policy,
13249 .flags = GENL_UNS_ADMIN_PERM,
13250 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13251 NL80211_FLAG_NEED_RTNL,
13252 },
13253 {
13254 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13255 .doit = nl80211_channel_switch,
13256 .policy = nl80211_policy,
13257 .flags = GENL_UNS_ADMIN_PERM,
13258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13259 NL80211_FLAG_NEED_RTNL,
13260 },
13261 {
13262 .cmd = NL80211_CMD_VENDOR,
13263 .doit = nl80211_vendor_cmd,
13264 .dumpit = nl80211_vendor_cmd_dump,
13265 .policy = nl80211_policy,
13266 .flags = GENL_UNS_ADMIN_PERM,
13267 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13268 NL80211_FLAG_NEED_RTNL,
13269 },
13270 {
13271 .cmd = NL80211_CMD_SET_QOS_MAP,
13272 .doit = nl80211_set_qos_map,
13273 .policy = nl80211_policy,
13274 .flags = GENL_UNS_ADMIN_PERM,
13275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13276 NL80211_FLAG_NEED_RTNL,
13277 },
13278 {
13279 .cmd = NL80211_CMD_ADD_TX_TS,
13280 .doit = nl80211_add_tx_ts,
13281 .policy = nl80211_policy,
13282 .flags = GENL_UNS_ADMIN_PERM,
13283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13284 NL80211_FLAG_NEED_RTNL,
13285 },
13286 {
13287 .cmd = NL80211_CMD_DEL_TX_TS,
13288 .doit = nl80211_del_tx_ts,
13289 .policy = nl80211_policy,
13290 .flags = GENL_UNS_ADMIN_PERM,
13291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13292 NL80211_FLAG_NEED_RTNL,
13293 },
13294 {
13295 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13296 .doit = nl80211_tdls_channel_switch,
13297 .policy = nl80211_policy,
13298 .flags = GENL_UNS_ADMIN_PERM,
13299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13300 NL80211_FLAG_NEED_RTNL,
13301 },
13302 {
13303 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13304 .doit = nl80211_tdls_cancel_channel_switch,
13305 .policy = nl80211_policy,
13306 .flags = GENL_UNS_ADMIN_PERM,
13307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13308 NL80211_FLAG_NEED_RTNL,
13309 },
13310 {
13311 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13312 .doit = nl80211_set_multicast_to_unicast,
13313 .policy = nl80211_policy,
13314 .flags = GENL_UNS_ADMIN_PERM,
13315 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13316 NL80211_FLAG_NEED_RTNL,
13317 },
13318 {
13319 .cmd = NL80211_CMD_SET_PMK,
13320 .doit = nl80211_set_pmk,
13321 .policy = nl80211_policy,
13322 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13323 NL80211_FLAG_NEED_RTNL,
13324 },
13325 {
13326 .cmd = NL80211_CMD_DEL_PMK,
13327 .doit = nl80211_del_pmk,
13328 .policy = nl80211_policy,
13329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13330 NL80211_FLAG_NEED_RTNL,
13331 },
13332
13333};
13334
13335static struct genl_family nl80211_fam __ro_after_init = {
13336 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13337 .hdrsize = 0, /* no private header */
13338 .version = 1, /* no particular meaning now */
13339 .maxattr = NL80211_ATTR_MAX,
13340 .netnsok = true,
13341 .pre_doit = nl80211_pre_doit,
13342 .post_doit = nl80211_post_doit,
13343 .module = THIS_MODULE,
13344 .ops = nl80211_ops,
13345 .n_ops = ARRAY_SIZE(nl80211_ops),
13346 .mcgrps = nl80211_mcgrps,
13347 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13348};
13349
13350/* notification functions */
13351
13352void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13353 enum nl80211_commands cmd)
13354{
13355 struct sk_buff *msg;
13356 struct nl80211_dump_wiphy_state state = {};
13357
13358 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13359 cmd != NL80211_CMD_DEL_WIPHY);
13360
13361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13362 if (!msg)
13363 return;
13364
13365 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13366 nlmsg_free(msg);
13367 return;
13368 }
13369
13370 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13371 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13372}
13373
13374void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13375 struct wireless_dev *wdev,
13376 enum nl80211_commands cmd)
13377{
13378 struct sk_buff *msg;
13379
13380 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13381 cmd != NL80211_CMD_DEL_INTERFACE);
13382
13383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13384 if (!msg)
13385 return;
13386
13387 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13388 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13389 nlmsg_free(msg);
13390 return;
13391 }
13392
13393 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13394 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13395}
13396
13397static int nl80211_add_scan_req(struct sk_buff *msg,
13398 struct cfg80211_registered_device *rdev)
13399{
13400 struct cfg80211_scan_request *req = rdev->scan_req;
13401 struct nlattr *nest;
13402 int i;
13403
13404 if (WARN_ON(!req))
13405 return 0;
13406
13407 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13408 if (!nest)
13409 goto nla_put_failure;
13410 for (i = 0; i < req->n_ssids; i++) {
13411 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13412 goto nla_put_failure;
13413 }
13414 nla_nest_end(msg, nest);
13415
13416 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13417 if (!nest)
13418 goto nla_put_failure;
13419 for (i = 0; i < req->n_channels; i++) {
13420 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13421 goto nla_put_failure;
13422 }
13423 nla_nest_end(msg, nest);
13424
13425 if (req->ie &&
13426 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13427 goto nla_put_failure;
13428
13429 if (req->flags &&
13430 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13431 goto nla_put_failure;
13432
13433 if (req->info.scan_start_tsf &&
13434 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13435 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13436 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13437 req->info.tsf_bssid)))
13438 goto nla_put_failure;
13439
13440 return 0;
13441 nla_put_failure:
13442 return -ENOBUFS;
13443}
13444
13445static int nl80211_prep_scan_msg(struct sk_buff *msg,
13446 struct cfg80211_registered_device *rdev,
13447 struct wireless_dev *wdev,
13448 u32 portid, u32 seq, int flags,
13449 u32 cmd)
13450{
13451 void *hdr;
13452
13453 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13454 if (!hdr)
13455 return -1;
13456
13457 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13458 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13459 wdev->netdev->ifindex)) ||
13460 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13461 NL80211_ATTR_PAD))
13462 goto nla_put_failure;
13463
13464 /* ignore errors and send incomplete event anyway */
13465 nl80211_add_scan_req(msg, rdev);
13466
13467 genlmsg_end(msg, hdr);
13468 return 0;
13469
13470 nla_put_failure:
13471 genlmsg_cancel(msg, hdr);
13472 return -EMSGSIZE;
13473}
13474
13475static int
13476nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13477 struct cfg80211_sched_scan_request *req, u32 cmd)
13478{
13479 void *hdr;
13480
13481 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13482 if (!hdr)
13483 return -1;
13484
13485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13486 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13487 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13488 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13489 NL80211_ATTR_PAD))
13490 goto nla_put_failure;
13491
13492 genlmsg_end(msg, hdr);
13493 return 0;
13494
13495 nla_put_failure:
13496 genlmsg_cancel(msg, hdr);
13497 return -EMSGSIZE;
13498}
13499
13500void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13501 struct wireless_dev *wdev)
13502{
13503 struct sk_buff *msg;
13504
13505 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13506 if (!msg)
13507 return;
13508
13509 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13510 NL80211_CMD_TRIGGER_SCAN) < 0) {
13511 nlmsg_free(msg);
13512 return;
13513 }
13514
13515 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13516 NL80211_MCGRP_SCAN, GFP_KERNEL);
13517}
13518
13519struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13520 struct wireless_dev *wdev, bool aborted)
13521{
13522 struct sk_buff *msg;
13523
13524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13525 if (!msg)
13526 return NULL;
13527
13528 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13529 aborted ? NL80211_CMD_SCAN_ABORTED :
13530 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13531 nlmsg_free(msg);
13532 return NULL;
13533 }
13534
13535 return msg;
13536}
13537
13538/* send message created by nl80211_build_scan_msg() */
13539void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13540 struct sk_buff *msg)
13541{
13542 if (!msg)
13543 return;
13544
13545 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13546 NL80211_MCGRP_SCAN, GFP_KERNEL);
13547}
13548
13549void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13550{
13551 struct sk_buff *msg;
13552
13553 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13554 if (!msg)
13555 return;
13556
13557 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13558 nlmsg_free(msg);
13559 return;
13560 }
13561
13562 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13563 NL80211_MCGRP_SCAN, GFP_KERNEL);
13564}
13565
13566static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13567 struct regulatory_request *request)
13568{
13569 /* Userspace can always count this one always being set */
13570 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13571 goto nla_put_failure;
13572
13573 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13574 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13575 NL80211_REGDOM_TYPE_WORLD))
13576 goto nla_put_failure;
13577 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13578 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13579 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13580 goto nla_put_failure;
13581 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13582 request->intersect) {
13583 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13584 NL80211_REGDOM_TYPE_INTERSECTION))
13585 goto nla_put_failure;
13586 } else {
13587 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13588 NL80211_REGDOM_TYPE_COUNTRY) ||
13589 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13590 request->alpha2))
13591 goto nla_put_failure;
13592 }
13593
13594 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13595 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13596
13597 if (wiphy &&
13598 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13599 goto nla_put_failure;
13600
13601 if (wiphy &&
13602 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13603 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13604 goto nla_put_failure;
13605 }
13606
13607 return true;
13608
13609nla_put_failure:
13610 return false;
13611}
13612
13613/*
13614 * This can happen on global regulatory changes or device specific settings
13615 * based on custom regulatory domains.
13616 */
13617void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13618 struct regulatory_request *request)
13619{
13620 struct sk_buff *msg;
13621 void *hdr;
13622
13623 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13624 if (!msg)
13625 return;
13626
13627 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13628 if (!hdr) {
13629 nlmsg_free(msg);
13630 return;
13631 }
13632
13633 if (nl80211_reg_change_event_fill(msg, request) == false)
13634 goto nla_put_failure;
13635
13636 genlmsg_end(msg, hdr);
13637
13638 rcu_read_lock();
13639 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13640 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13641 rcu_read_unlock();
13642
13643 return;
13644
13645nla_put_failure:
13646 genlmsg_cancel(msg, hdr);
13647 nlmsg_free(msg);
13648}
13649
13650static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13651 struct net_device *netdev,
13652 const u8 *buf, size_t len,
13653 enum nl80211_commands cmd, gfp_t gfp,
13654 int uapsd_queues)
13655{
13656 struct sk_buff *msg;
13657 void *hdr;
13658
13659 msg = nlmsg_new(100 + len, gfp);
13660 if (!msg)
13661 return;
13662
13663 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13664 if (!hdr) {
13665 nlmsg_free(msg);
13666 return;
13667 }
13668
13669 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13670 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13671 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13672 goto nla_put_failure;
13673
13674 if (uapsd_queues >= 0) {
13675 struct nlattr *nla_wmm =
13676 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13677 if (!nla_wmm)
13678 goto nla_put_failure;
13679
13680 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13681 uapsd_queues))
13682 goto nla_put_failure;
13683
13684 nla_nest_end(msg, nla_wmm);
13685 }
13686
13687 genlmsg_end(msg, hdr);
13688
13689 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13690 NL80211_MCGRP_MLME, gfp);
13691 return;
13692
13693 nla_put_failure:
13694 genlmsg_cancel(msg, hdr);
13695 nlmsg_free(msg);
13696}
13697
13698void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13699 struct net_device *netdev, const u8 *buf,
13700 size_t len, gfp_t gfp)
13701{
13702 nl80211_send_mlme_event(rdev, netdev, buf, len,
13703 NL80211_CMD_AUTHENTICATE, gfp, -1);
13704}
13705
13706void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13707 struct net_device *netdev, const u8 *buf,
13708 size_t len, gfp_t gfp, int uapsd_queues)
13709{
13710 nl80211_send_mlme_event(rdev, netdev, buf, len,
13711 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13712}
13713
13714void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13715 struct net_device *netdev, const u8 *buf,
13716 size_t len, gfp_t gfp)
13717{
13718 nl80211_send_mlme_event(rdev, netdev, buf, len,
13719 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13720}
13721
13722void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13723 struct net_device *netdev, const u8 *buf,
13724 size_t len, gfp_t gfp)
13725{
13726 nl80211_send_mlme_event(rdev, netdev, buf, len,
13727 NL80211_CMD_DISASSOCIATE, gfp, -1);
13728}
13729
13730void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13731 size_t len)
13732{
13733 struct wireless_dev *wdev = dev->ieee80211_ptr;
13734 struct wiphy *wiphy = wdev->wiphy;
13735 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13736 const struct ieee80211_mgmt *mgmt = (void *)buf;
13737 u32 cmd;
13738
13739 if (WARN_ON(len < 2))
13740 return;
13741
13742 if (ieee80211_is_deauth(mgmt->frame_control))
13743 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13744 else
13745 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13746
13747 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13748 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13749}
13750EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13751
13752static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13753 struct net_device *netdev, int cmd,
13754 const u8 *addr, gfp_t gfp)
13755{
13756 struct sk_buff *msg;
13757 void *hdr;
13758
13759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13760 if (!msg)
13761 return;
13762
13763 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13764 if (!hdr) {
13765 nlmsg_free(msg);
13766 return;
13767 }
13768
13769 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13770 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13771 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13772 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13773 goto nla_put_failure;
13774
13775 genlmsg_end(msg, hdr);
13776
13777 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13778 NL80211_MCGRP_MLME, gfp);
13779 return;
13780
13781 nla_put_failure:
13782 genlmsg_cancel(msg, hdr);
13783 nlmsg_free(msg);
13784}
13785
13786void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13787 struct net_device *netdev, const u8 *addr,
13788 gfp_t gfp)
13789{
13790 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13791 addr, gfp);
13792}
13793
13794void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13795 struct net_device *netdev, const u8 *addr,
13796 gfp_t gfp)
13797{
13798 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13799 addr, gfp);
13800}
13801
13802void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13803 struct net_device *netdev,
13804 struct cfg80211_connect_resp_params *cr,
13805 gfp_t gfp)
13806{
13807 struct sk_buff *msg;
13808 void *hdr;
13809
13810 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13811 cr->fils_kek_len + cr->pmk_len +
13812 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13813 if (!msg)
13814 return;
13815
13816 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13817 if (!hdr) {
13818 nlmsg_free(msg);
13819 return;
13820 }
13821
13822 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13823 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13824 (cr->bssid &&
13825 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13826 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13827 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13828 cr->status) ||
13829 (cr->status < 0 &&
13830 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13831 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13832 cr->timeout_reason))) ||
13833 (cr->req_ie &&
13834 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13835 (cr->resp_ie &&
13836 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13837 cr->resp_ie)) ||
13838 (cr->update_erp_next_seq_num &&
13839 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13840 cr->fils_erp_next_seq_num)) ||
13841 (cr->status == WLAN_STATUS_SUCCESS &&
13842 ((cr->fils_kek &&
13843 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13844 cr->fils_kek)) ||
13845 (cr->pmk &&
13846 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13847 (cr->pmkid &&
13848 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13849 goto nla_put_failure;
13850
13851 genlmsg_end(msg, hdr);
13852
13853 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13854 NL80211_MCGRP_MLME, gfp);
13855 return;
13856
13857 nla_put_failure:
13858 genlmsg_cancel(msg, hdr);
13859 nlmsg_free(msg);
13860}
13861
13862void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13863 struct net_device *netdev,
13864 struct cfg80211_roam_info *info, gfp_t gfp)
13865{
13866 struct sk_buff *msg;
13867 void *hdr;
13868 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13869
13870 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13871 if (!msg)
13872 return;
13873
13874 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13875 if (!hdr) {
13876 nlmsg_free(msg);
13877 return;
13878 }
13879
13880 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13881 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13882 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13883 (info->req_ie &&
13884 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13885 info->req_ie)) ||
13886 (info->resp_ie &&
13887 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13888 info->resp_ie)))
13889 goto nla_put_failure;
13890
13891 genlmsg_end(msg, hdr);
13892
13893 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13894 NL80211_MCGRP_MLME, gfp);
13895 return;
13896
13897 nla_put_failure:
13898 genlmsg_cancel(msg, hdr);
13899 nlmsg_free(msg);
13900}
13901
13902void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13903 struct net_device *netdev, const u8 *bssid)
13904{
13905 struct sk_buff *msg;
13906 void *hdr;
13907
13908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13909 if (!msg)
13910 return;
13911
13912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13913 if (!hdr) {
13914 nlmsg_free(msg);
13915 return;
13916 }
13917
13918 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13919 goto nla_put_failure;
13920
13921 genlmsg_end(msg, hdr);
13922
13923 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13924 NL80211_MCGRP_MLME, GFP_KERNEL);
13925 return;
13926
13927 nla_put_failure:
13928 genlmsg_cancel(msg, hdr);
13929 nlmsg_free(msg);
13930}
13931
13932void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13933 struct net_device *netdev, u16 reason,
13934 const u8 *ie, size_t ie_len, bool from_ap)
13935{
13936 struct sk_buff *msg;
13937 void *hdr;
13938
13939 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13940 if (!msg)
13941 return;
13942
13943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13944 if (!hdr) {
13945 nlmsg_free(msg);
13946 return;
13947 }
13948
13949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13951 (from_ap && reason &&
13952 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13953 (from_ap &&
13954 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13955 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13956 goto nla_put_failure;
13957
13958 genlmsg_end(msg, hdr);
13959
13960 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13961 NL80211_MCGRP_MLME, GFP_KERNEL);
13962 return;
13963
13964 nla_put_failure:
13965 genlmsg_cancel(msg, hdr);
13966 nlmsg_free(msg);
13967}
13968
13969void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13970 struct net_device *netdev, const u8 *bssid,
13971 gfp_t gfp)
13972{
13973 struct sk_buff *msg;
13974 void *hdr;
13975
13976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13977 if (!msg)
13978 return;
13979
13980 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13981 if (!hdr) {
13982 nlmsg_free(msg);
13983 return;
13984 }
13985
13986 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13987 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13988 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13989 goto nla_put_failure;
13990
13991 genlmsg_end(msg, hdr);
13992
13993 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13994 NL80211_MCGRP_MLME, gfp);
13995 return;
13996
13997 nla_put_failure:
13998 genlmsg_cancel(msg, hdr);
13999 nlmsg_free(msg);
14000}
14001
14002void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14003 const u8* ie, u8 ie_len, gfp_t gfp)
14004{
14005 struct wireless_dev *wdev = dev->ieee80211_ptr;
14006 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14007 struct sk_buff *msg;
14008 void *hdr;
14009
14010 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14011 return;
14012
14013 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14014
14015 msg = nlmsg_new(100 + ie_len, gfp);
14016 if (!msg)
14017 return;
14018
14019 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14020 if (!hdr) {
14021 nlmsg_free(msg);
14022 return;
14023 }
14024
14025 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14026 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14027 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14028 (ie_len && ie &&
14029 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14030 goto nla_put_failure;
14031
14032 genlmsg_end(msg, hdr);
14033
14034 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14035 NL80211_MCGRP_MLME, gfp);
14036 return;
14037
14038 nla_put_failure:
14039 genlmsg_cancel(msg, hdr);
14040 nlmsg_free(msg);
14041}
14042EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14043
14044void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14045 struct net_device *netdev, const u8 *addr,
14046 enum nl80211_key_type key_type, int key_id,
14047 const u8 *tsc, gfp_t gfp)
14048{
14049 struct sk_buff *msg;
14050 void *hdr;
14051
14052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14053 if (!msg)
14054 return;
14055
14056 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14057 if (!hdr) {
14058 nlmsg_free(msg);
14059 return;
14060 }
14061
14062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14063 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14064 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14065 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14066 (key_id != -1 &&
14067 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14068 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14069 goto nla_put_failure;
14070
14071 genlmsg_end(msg, hdr);
14072
14073 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14074 NL80211_MCGRP_MLME, gfp);
14075 return;
14076
14077 nla_put_failure:
14078 genlmsg_cancel(msg, hdr);
14079 nlmsg_free(msg);
14080}
14081
14082void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14083 struct ieee80211_channel *channel_before,
14084 struct ieee80211_channel *channel_after)
14085{
14086 struct sk_buff *msg;
14087 void *hdr;
14088 struct nlattr *nl_freq;
14089
14090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14091 if (!msg)
14092 return;
14093
14094 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14095 if (!hdr) {
14096 nlmsg_free(msg);
14097 return;
14098 }
14099
14100 /*
14101 * Since we are applying the beacon hint to a wiphy we know its
14102 * wiphy_idx is valid
14103 */
14104 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14105 goto nla_put_failure;
14106
14107 /* Before */
14108 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14109 if (!nl_freq)
14110 goto nla_put_failure;
14111 if (nl80211_msg_put_channel(msg, channel_before, false))
14112 goto nla_put_failure;
14113 nla_nest_end(msg, nl_freq);
14114
14115 /* After */
14116 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14117 if (!nl_freq)
14118 goto nla_put_failure;
14119 if (nl80211_msg_put_channel(msg, channel_after, false))
14120 goto nla_put_failure;
14121 nla_nest_end(msg, nl_freq);
14122
14123 genlmsg_end(msg, hdr);
14124
14125 rcu_read_lock();
14126 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14127 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14128 rcu_read_unlock();
14129
14130 return;
14131
14132nla_put_failure:
14133 genlmsg_cancel(msg, hdr);
14134 nlmsg_free(msg);
14135}
14136
14137static void nl80211_send_remain_on_chan_event(
14138 int cmd, struct cfg80211_registered_device *rdev,
14139 struct wireless_dev *wdev, u64 cookie,
14140 struct ieee80211_channel *chan,
14141 unsigned int duration, gfp_t gfp)
14142{
14143 struct sk_buff *msg;
14144 void *hdr;
14145
14146 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14147 if (!msg)
14148 return;
14149
14150 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14151 if (!hdr) {
14152 nlmsg_free(msg);
14153 return;
14154 }
14155
14156 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14157 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14158 wdev->netdev->ifindex)) ||
14159 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14160 NL80211_ATTR_PAD) ||
14161 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14162 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14163 NL80211_CHAN_NO_HT) ||
14164 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14165 NL80211_ATTR_PAD))
14166 goto nla_put_failure;
14167
14168 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14169 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14170 goto nla_put_failure;
14171
14172 genlmsg_end(msg, hdr);
14173
14174 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14175 NL80211_MCGRP_MLME, gfp);
14176 return;
14177
14178 nla_put_failure:
14179 genlmsg_cancel(msg, hdr);
14180 nlmsg_free(msg);
14181}
14182
14183void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14184 struct ieee80211_channel *chan,
14185 unsigned int duration, gfp_t gfp)
14186{
14187 struct wiphy *wiphy = wdev->wiphy;
14188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14189
14190 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14191 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14192 rdev, wdev, cookie, chan,
14193 duration, gfp);
14194}
14195EXPORT_SYMBOL(cfg80211_ready_on_channel);
14196
14197void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14198 struct ieee80211_channel *chan,
14199 gfp_t gfp)
14200{
14201 struct wiphy *wiphy = wdev->wiphy;
14202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14203
14204 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14205 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14206 rdev, wdev, cookie, chan, 0, gfp);
14207}
14208EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14209
14210void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14211 struct station_info *sinfo, gfp_t gfp)
14212{
14213 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14214 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14215 struct sk_buff *msg;
14216
14217 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14218
14219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14220 if (!msg)
14221 return;
14222
14223 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14224 rdev, dev, mac_addr, sinfo) < 0) {
14225 nlmsg_free(msg);
14226 return;
14227 }
14228
14229 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14230 NL80211_MCGRP_MLME, gfp);
14231}
14232EXPORT_SYMBOL(cfg80211_new_sta);
14233
14234void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14235 struct station_info *sinfo, gfp_t gfp)
14236{
14237 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14238 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14239 struct sk_buff *msg;
14240 struct station_info empty_sinfo = {};
14241
14242 if (!sinfo)
14243 sinfo = &empty_sinfo;
14244
14245 trace_cfg80211_del_sta(dev, mac_addr);
14246
14247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14248 if (!msg)
14249 return;
14250
14251 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14252 rdev, dev, mac_addr, sinfo) < 0) {
14253 nlmsg_free(msg);
14254 return;
14255 }
14256
14257 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14258 NL80211_MCGRP_MLME, gfp);
14259}
14260EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14261
14262void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14263 enum nl80211_connect_failed_reason reason,
14264 gfp_t gfp)
14265{
14266 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14267 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14268 struct sk_buff *msg;
14269 void *hdr;
14270
14271 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14272 if (!msg)
14273 return;
14274
14275 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14276 if (!hdr) {
14277 nlmsg_free(msg);
14278 return;
14279 }
14280
14281 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14282 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14283 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14284 goto nla_put_failure;
14285
14286 genlmsg_end(msg, hdr);
14287
14288 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14289 NL80211_MCGRP_MLME, gfp);
14290 return;
14291
14292 nla_put_failure:
14293 genlmsg_cancel(msg, hdr);
14294 nlmsg_free(msg);
14295}
14296EXPORT_SYMBOL(cfg80211_conn_failed);
14297
14298static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14299 const u8 *addr, gfp_t gfp)
14300{
14301 struct wireless_dev *wdev = dev->ieee80211_ptr;
14302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14303 struct sk_buff *msg;
14304 void *hdr;
14305 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14306
14307 if (!nlportid)
14308 return false;
14309
14310 msg = nlmsg_new(100, gfp);
14311 if (!msg)
14312 return true;
14313
14314 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14315 if (!hdr) {
14316 nlmsg_free(msg);
14317 return true;
14318 }
14319
14320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14321 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14322 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14323 goto nla_put_failure;
14324
14325 genlmsg_end(msg, hdr);
14326 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14327 return true;
14328
14329 nla_put_failure:
14330 genlmsg_cancel(msg, hdr);
14331 nlmsg_free(msg);
14332 return true;
14333}
14334
14335bool cfg80211_rx_spurious_frame(struct net_device *dev,
14336 const u8 *addr, gfp_t gfp)
14337{
14338 struct wireless_dev *wdev = dev->ieee80211_ptr;
14339 bool ret;
14340
14341 trace_cfg80211_rx_spurious_frame(dev, addr);
14342
14343 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14344 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14345 trace_cfg80211_return_bool(false);
14346 return false;
14347 }
14348 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14349 addr, gfp);
14350 trace_cfg80211_return_bool(ret);
14351 return ret;
14352}
14353EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14354
14355bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14356 const u8 *addr, gfp_t gfp)
14357{
14358 struct wireless_dev *wdev = dev->ieee80211_ptr;
14359 bool ret;
14360
14361 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14362
14363 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14364 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14365 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14366 trace_cfg80211_return_bool(false);
14367 return false;
14368 }
14369 ret = __nl80211_unexpected_frame(dev,
14370 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14371 addr, gfp);
14372 trace_cfg80211_return_bool(ret);
14373 return ret;
14374}
14375EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14376
14377int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14378 struct wireless_dev *wdev, u32 nlportid,
14379 int freq, int sig_dbm,
14380 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14381{
14382 struct net_device *netdev = wdev->netdev;
14383 struct sk_buff *msg;
14384 void *hdr;
14385
14386 msg = nlmsg_new(100 + len, gfp);
14387 if (!msg)
14388 return -ENOMEM;
14389
14390 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14391 if (!hdr) {
14392 nlmsg_free(msg);
14393 return -ENOMEM;
14394 }
14395
14396 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14397 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14398 netdev->ifindex)) ||
14399 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14400 NL80211_ATTR_PAD) ||
14401 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14402 (sig_dbm &&
14403 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14404 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14405 (flags &&
14406 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14407 goto nla_put_failure;
14408
14409 genlmsg_end(msg, hdr);
14410
14411 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14412
14413 nla_put_failure:
14414 genlmsg_cancel(msg, hdr);
14415 nlmsg_free(msg);
14416 return -ENOBUFS;
14417}
14418
14419void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14420 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14421{
14422 struct wiphy *wiphy = wdev->wiphy;
14423 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14424 struct net_device *netdev = wdev->netdev;
14425 struct sk_buff *msg;
14426 void *hdr;
14427
14428 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14429
14430 msg = nlmsg_new(100 + len, gfp);
14431 if (!msg)
14432 return;
14433
14434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14435 if (!hdr) {
14436 nlmsg_free(msg);
14437 return;
14438 }
14439
14440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14441 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14442 netdev->ifindex)) ||
14443 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14444 NL80211_ATTR_PAD) ||
14445 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14446 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14447 NL80211_ATTR_PAD) ||
14448 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14449 goto nla_put_failure;
14450
14451 genlmsg_end(msg, hdr);
14452
14453 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14454 NL80211_MCGRP_MLME, gfp);
14455 return;
14456
14457 nla_put_failure:
14458 genlmsg_cancel(msg, hdr);
14459 nlmsg_free(msg);
14460}
14461EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14462
14463static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14464 const char *mac, gfp_t gfp)
14465{
14466 struct wireless_dev *wdev = dev->ieee80211_ptr;
14467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14468 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14469 void **cb;
14470
14471 if (!msg)
14472 return NULL;
14473
14474 cb = (void **)msg->cb;
14475
14476 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14477 if (!cb[0]) {
14478 nlmsg_free(msg);
14479 return NULL;
14480 }
14481
14482 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14483 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14484 goto nla_put_failure;
14485
14486 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14487 goto nla_put_failure;
14488
14489 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14490 if (!cb[1])
14491 goto nla_put_failure;
14492
14493 cb[2] = rdev;
14494
14495 return msg;
14496 nla_put_failure:
14497 nlmsg_free(msg);
14498 return NULL;
14499}
14500
14501static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14502{
14503 void **cb = (void **)msg->cb;
14504 struct cfg80211_registered_device *rdev = cb[2];
14505
14506 nla_nest_end(msg, cb[1]);
14507 genlmsg_end(msg, cb[0]);
14508
14509 memset(msg->cb, 0, sizeof(msg->cb));
14510
14511 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14512 NL80211_MCGRP_MLME, gfp);
14513}
14514
14515void cfg80211_cqm_rssi_notify(struct net_device *dev,
14516 enum nl80211_cqm_rssi_threshold_event rssi_event,
14517 s32 rssi_level, gfp_t gfp)
14518{
14519 struct sk_buff *msg;
14520 struct wireless_dev *wdev = dev->ieee80211_ptr;
14521 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14522
14523 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14524
14525 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14526 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14527 return;
14528
14529 if (wdev->cqm_config) {
14530 wdev->cqm_config->last_rssi_event_value = rssi_level;
14531
14532 cfg80211_cqm_rssi_update(rdev, dev);
14533
14534 if (rssi_level == 0)
14535 rssi_level = wdev->cqm_config->last_rssi_event_value;
14536 }
14537
14538 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14539 if (!msg)
14540 return;
14541
14542 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14543 rssi_event))
14544 goto nla_put_failure;
14545
14546 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14547 rssi_level))
14548 goto nla_put_failure;
14549
14550 cfg80211_send_cqm(msg, gfp);
14551
14552 return;
14553
14554 nla_put_failure:
14555 nlmsg_free(msg);
14556}
14557EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14558
14559void cfg80211_cqm_txe_notify(struct net_device *dev,
14560 const u8 *peer, u32 num_packets,
14561 u32 rate, u32 intvl, gfp_t gfp)
14562{
14563 struct sk_buff *msg;
14564
14565 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14566 if (!msg)
14567 return;
14568
14569 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14570 goto nla_put_failure;
14571
14572 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14573 goto nla_put_failure;
14574
14575 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14576 goto nla_put_failure;
14577
14578 cfg80211_send_cqm(msg, gfp);
14579 return;
14580
14581 nla_put_failure:
14582 nlmsg_free(msg);
14583}
14584EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14585
14586void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14587 const u8 *peer, u32 num_packets, gfp_t gfp)
14588{
14589 struct sk_buff *msg;
14590
14591 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14592
14593 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14594 if (!msg)
14595 return;
14596
14597 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14598 goto nla_put_failure;
14599
14600 cfg80211_send_cqm(msg, gfp);
14601 return;
14602
14603 nla_put_failure:
14604 nlmsg_free(msg);
14605}
14606EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14607
14608void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14609{
14610 struct sk_buff *msg;
14611
14612 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14613 if (!msg)
14614 return;
14615
14616 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14617 goto nla_put_failure;
14618
14619 cfg80211_send_cqm(msg, gfp);
14620 return;
14621
14622 nla_put_failure:
14623 nlmsg_free(msg);
14624}
14625EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14626
14627static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14628 struct net_device *netdev, const u8 *bssid,
14629 const u8 *replay_ctr, gfp_t gfp)
14630{
14631 struct sk_buff *msg;
14632 struct nlattr *rekey_attr;
14633 void *hdr;
14634
14635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14636 if (!msg)
14637 return;
14638
14639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14640 if (!hdr) {
14641 nlmsg_free(msg);
14642 return;
14643 }
14644
14645 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14646 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14647 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14648 goto nla_put_failure;
14649
14650 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14651 if (!rekey_attr)
14652 goto nla_put_failure;
14653
14654 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14655 NL80211_REPLAY_CTR_LEN, replay_ctr))
14656 goto nla_put_failure;
14657
14658 nla_nest_end(msg, rekey_attr);
14659
14660 genlmsg_end(msg, hdr);
14661
14662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14663 NL80211_MCGRP_MLME, gfp);
14664 return;
14665
14666 nla_put_failure:
14667 genlmsg_cancel(msg, hdr);
14668 nlmsg_free(msg);
14669}
14670
14671void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14672 const u8 *replay_ctr, gfp_t gfp)
14673{
14674 struct wireless_dev *wdev = dev->ieee80211_ptr;
14675 struct wiphy *wiphy = wdev->wiphy;
14676 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14677
14678 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14679 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14680}
14681EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14682
14683static void
14684nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14685 struct net_device *netdev, int index,
14686 const u8 *bssid, bool preauth, gfp_t gfp)
14687{
14688 struct sk_buff *msg;
14689 struct nlattr *attr;
14690 void *hdr;
14691
14692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14693 if (!msg)
14694 return;
14695
14696 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14697 if (!hdr) {
14698 nlmsg_free(msg);
14699 return;
14700 }
14701
14702 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14703 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14704 goto nla_put_failure;
14705
14706 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14707 if (!attr)
14708 goto nla_put_failure;
14709
14710 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14711 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14712 (preauth &&
14713 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14714 goto nla_put_failure;
14715
14716 nla_nest_end(msg, attr);
14717
14718 genlmsg_end(msg, hdr);
14719
14720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14721 NL80211_MCGRP_MLME, gfp);
14722 return;
14723
14724 nla_put_failure:
14725 genlmsg_cancel(msg, hdr);
14726 nlmsg_free(msg);
14727}
14728
14729void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14730 const u8 *bssid, bool preauth, gfp_t gfp)
14731{
14732 struct wireless_dev *wdev = dev->ieee80211_ptr;
14733 struct wiphy *wiphy = wdev->wiphy;
14734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14735
14736 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14737 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14738}
14739EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14740
14741static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14742 struct net_device *netdev,
14743 struct cfg80211_chan_def *chandef,
14744 gfp_t gfp,
14745 enum nl80211_commands notif,
14746 u8 count)
14747{
14748 struct sk_buff *msg;
14749 void *hdr;
14750
14751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14752 if (!msg)
14753 return;
14754
14755 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14756 if (!hdr) {
14757 nlmsg_free(msg);
14758 return;
14759 }
14760
14761 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14762 goto nla_put_failure;
14763
14764 if (nl80211_send_chandef(msg, chandef))
14765 goto nla_put_failure;
14766
14767 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14768 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14769 goto nla_put_failure;
14770
14771 genlmsg_end(msg, hdr);
14772
14773 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14774 NL80211_MCGRP_MLME, gfp);
14775 return;
14776
14777 nla_put_failure:
14778 genlmsg_cancel(msg, hdr);
14779 nlmsg_free(msg);
14780}
14781
14782void cfg80211_ch_switch_notify(struct net_device *dev,
14783 struct cfg80211_chan_def *chandef)
14784{
14785 struct wireless_dev *wdev = dev->ieee80211_ptr;
14786 struct wiphy *wiphy = wdev->wiphy;
14787 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14788
14789 ASSERT_WDEV_LOCK(wdev);
14790
14791 trace_cfg80211_ch_switch_notify(dev, chandef);
14792
14793 wdev->chandef = *chandef;
14794 wdev->preset_chandef = *chandef;
14795 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14796 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14797}
14798EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14799
14800void cfg80211_ch_switch_started_notify(struct net_device *dev,
14801 struct cfg80211_chan_def *chandef,
14802 u8 count)
14803{
14804 struct wireless_dev *wdev = dev->ieee80211_ptr;
14805 struct wiphy *wiphy = wdev->wiphy;
14806 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14807
14808 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14809
14810 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14811 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14812}
14813EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14814
14815void
14816nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14817 const struct cfg80211_chan_def *chandef,
14818 enum nl80211_radar_event event,
14819 struct net_device *netdev, gfp_t gfp)
14820{
14821 struct sk_buff *msg;
14822 void *hdr;
14823
14824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14825 if (!msg)
14826 return;
14827
14828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14829 if (!hdr) {
14830 nlmsg_free(msg);
14831 return;
14832 }
14833
14834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14835 goto nla_put_failure;
14836
14837 /* NOP and radar events don't need a netdev parameter */
14838 if (netdev) {
14839 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14840
14841 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14842 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14843 NL80211_ATTR_PAD))
14844 goto nla_put_failure;
14845 }
14846
14847 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14848 goto nla_put_failure;
14849
14850 if (nl80211_send_chandef(msg, chandef))
14851 goto nla_put_failure;
14852
14853 genlmsg_end(msg, hdr);
14854
14855 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14856 NL80211_MCGRP_MLME, gfp);
14857 return;
14858
14859 nla_put_failure:
14860 genlmsg_cancel(msg, hdr);
14861 nlmsg_free(msg);
14862}
14863
14864void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14865 u64 cookie, bool acked, gfp_t gfp)
14866{
14867 struct wireless_dev *wdev = dev->ieee80211_ptr;
14868 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14869 struct sk_buff *msg;
14870 void *hdr;
14871
14872 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14873
14874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14875
14876 if (!msg)
14877 return;
14878
14879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14880 if (!hdr) {
14881 nlmsg_free(msg);
14882 return;
14883 }
14884
14885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14887 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14888 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14889 NL80211_ATTR_PAD) ||
14890 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14891 goto nla_put_failure;
14892
14893 genlmsg_end(msg, hdr);
14894
14895 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14896 NL80211_MCGRP_MLME, gfp);
14897 return;
14898
14899 nla_put_failure:
14900 genlmsg_cancel(msg, hdr);
14901 nlmsg_free(msg);
14902}
14903EXPORT_SYMBOL(cfg80211_probe_status);
14904
14905void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14906 const u8 *frame, size_t len,
14907 int freq, int sig_dbm)
14908{
14909 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14910 struct sk_buff *msg;
14911 void *hdr;
14912 struct cfg80211_beacon_registration *reg;
14913
14914 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14915
14916 spin_lock_bh(&rdev->beacon_registrations_lock);
14917 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14918 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14919 if (!msg) {
14920 spin_unlock_bh(&rdev->beacon_registrations_lock);
14921 return;
14922 }
14923
14924 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14925 if (!hdr)
14926 goto nla_put_failure;
14927
14928 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14929 (freq &&
14930 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14931 (sig_dbm &&
14932 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14933 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14934 goto nla_put_failure;
14935
14936 genlmsg_end(msg, hdr);
14937
14938 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14939 }
14940 spin_unlock_bh(&rdev->beacon_registrations_lock);
14941 return;
14942
14943 nla_put_failure:
14944 spin_unlock_bh(&rdev->beacon_registrations_lock);
14945 if (hdr)
14946 genlmsg_cancel(msg, hdr);
14947 nlmsg_free(msg);
14948}
14949EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14950
14951#ifdef CONFIG_PM
14952static int cfg80211_net_detect_results(struct sk_buff *msg,
14953 struct cfg80211_wowlan_wakeup *wakeup)
14954{
14955 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14956 struct nlattr *nl_results, *nl_match, *nl_freqs;
14957 int i, j;
14958
14959 nl_results = nla_nest_start(
14960 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14961 if (!nl_results)
14962 return -EMSGSIZE;
14963
14964 for (i = 0; i < nd->n_matches; i++) {
14965 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14966
14967 nl_match = nla_nest_start(msg, i);
14968 if (!nl_match)
14969 break;
14970
14971 /* The SSID attribute is optional in nl80211, but for
14972 * simplicity reasons it's always present in the
14973 * cfg80211 structure. If a driver can't pass the
14974 * SSID, that needs to be changed. A zero length SSID
14975 * is still a valid SSID (wildcard), so it cannot be
14976 * used for this purpose.
14977 */
14978 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14979 match->ssid.ssid)) {
14980 nla_nest_cancel(msg, nl_match);
14981 goto out;
14982 }
14983
14984 if (match->n_channels) {
14985 nl_freqs = nla_nest_start(
14986 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14987 if (!nl_freqs) {
14988 nla_nest_cancel(msg, nl_match);
14989 goto out;
14990 }
14991
14992 for (j = 0; j < match->n_channels; j++) {
14993 if (nla_put_u32(msg, j, match->channels[j])) {
14994 nla_nest_cancel(msg, nl_freqs);
14995 nla_nest_cancel(msg, nl_match);
14996 goto out;
14997 }
14998 }
14999
15000 nla_nest_end(msg, nl_freqs);
15001 }
15002
15003 nla_nest_end(msg, nl_match);
15004 }
15005
15006out:
15007 nla_nest_end(msg, nl_results);
15008 return 0;
15009}
15010
15011void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15012 struct cfg80211_wowlan_wakeup *wakeup,
15013 gfp_t gfp)
15014{
15015 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15016 struct sk_buff *msg;
15017 void *hdr;
15018 int size = 200;
15019
15020 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15021
15022 if (wakeup)
15023 size += wakeup->packet_present_len;
15024
15025 msg = nlmsg_new(size, gfp);
15026 if (!msg)
15027 return;
15028
15029 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15030 if (!hdr)
15031 goto free_msg;
15032
15033 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15034 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15035 NL80211_ATTR_PAD))
15036 goto free_msg;
15037
15038 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15039 wdev->netdev->ifindex))
15040 goto free_msg;
15041
15042 if (wakeup) {
15043 struct nlattr *reasons;
15044
15045 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15046 if (!reasons)
15047 goto free_msg;
15048
15049 if (wakeup->disconnect &&
15050 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15051 goto free_msg;
15052 if (wakeup->magic_pkt &&
15053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15054 goto free_msg;
15055 if (wakeup->gtk_rekey_failure &&
15056 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15057 goto free_msg;
15058 if (wakeup->eap_identity_req &&
15059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15060 goto free_msg;
15061 if (wakeup->four_way_handshake &&
15062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15063 goto free_msg;
15064 if (wakeup->rfkill_release &&
15065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15066 goto free_msg;
15067
15068 if (wakeup->pattern_idx >= 0 &&
15069 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15070 wakeup->pattern_idx))
15071 goto free_msg;
15072
15073 if (wakeup->tcp_match &&
15074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15075 goto free_msg;
15076
15077 if (wakeup->tcp_connlost &&
15078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15079 goto free_msg;
15080
15081 if (wakeup->tcp_nomoretokens &&
15082 nla_put_flag(msg,
15083 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15084 goto free_msg;
15085
15086 if (wakeup->packet) {
15087 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15088 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15089
15090 if (!wakeup->packet_80211) {
15091 pkt_attr =
15092 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15093 len_attr =
15094 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15095 }
15096
15097 if (wakeup->packet_len &&
15098 nla_put_u32(msg, len_attr, wakeup->packet_len))
15099 goto free_msg;
15100
15101 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15102 wakeup->packet))
15103 goto free_msg;
15104 }
15105
15106 if (wakeup->net_detect &&
15107 cfg80211_net_detect_results(msg, wakeup))
15108 goto free_msg;
15109
15110 nla_nest_end(msg, reasons);
15111 }
15112
15113 genlmsg_end(msg, hdr);
15114
15115 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15116 NL80211_MCGRP_MLME, gfp);
15117 return;
15118
15119 free_msg:
15120 nlmsg_free(msg);
15121}
15122EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15123#endif
15124
15125void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15126 enum nl80211_tdls_operation oper,
15127 u16 reason_code, gfp_t gfp)
15128{
15129 struct wireless_dev *wdev = dev->ieee80211_ptr;
15130 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15131 struct sk_buff *msg;
15132 void *hdr;
15133
15134 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15135 reason_code);
15136
15137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15138 if (!msg)
15139 return;
15140
15141 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15142 if (!hdr) {
15143 nlmsg_free(msg);
15144 return;
15145 }
15146
15147 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15148 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15149 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15150 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15151 (reason_code > 0 &&
15152 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15153 goto nla_put_failure;
15154
15155 genlmsg_end(msg, hdr);
15156
15157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15158 NL80211_MCGRP_MLME, gfp);
15159 return;
15160
15161 nla_put_failure:
15162 genlmsg_cancel(msg, hdr);
15163 nlmsg_free(msg);
15164}
15165EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15166
15167static int nl80211_netlink_notify(struct notifier_block * nb,
15168 unsigned long state,
15169 void *_notify)
15170{
15171 struct netlink_notify *notify = _notify;
15172 struct cfg80211_registered_device *rdev;
15173 struct wireless_dev *wdev;
15174 struct cfg80211_beacon_registration *reg, *tmp;
15175
15176 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15177 return NOTIFY_DONE;
15178
15179 rcu_read_lock();
15180
15181 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15182 struct cfg80211_sched_scan_request *sched_scan_req;
15183
15184 list_for_each_entry_rcu(sched_scan_req,
15185 &rdev->sched_scan_req_list,
15186 list) {
15187 if (sched_scan_req->owner_nlportid == notify->portid) {
15188 sched_scan_req->nl_owner_dead = true;
15189 schedule_work(&rdev->sched_scan_stop_wk);
15190 }
15191 }
15192
15193 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15194 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15195
15196 if (wdev->owner_nlportid == notify->portid) {
15197 wdev->nl_owner_dead = true;
15198 schedule_work(&rdev->destroy_work);
15199 } else if (wdev->conn_owner_nlportid == notify->portid) {
15200 schedule_work(&wdev->disconnect_wk);
15201 }
15202 }
15203
15204 spin_lock_bh(&rdev->beacon_registrations_lock);
15205 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15206 list) {
15207 if (reg->nlportid == notify->portid) {
15208 list_del(&reg->list);
15209 kfree(reg);
15210 break;
15211 }
15212 }
15213 spin_unlock_bh(&rdev->beacon_registrations_lock);
15214 }
15215
15216 rcu_read_unlock();
15217
15218 /*
15219 * It is possible that the user space process that is controlling the
15220 * indoor setting disappeared, so notify the regulatory core.
15221 */
15222 regulatory_netlink_notify(notify->portid);
15223 return NOTIFY_OK;
15224}
15225
15226static struct notifier_block nl80211_netlink_notifier = {
15227 .notifier_call = nl80211_netlink_notify,
15228};
15229
15230void cfg80211_ft_event(struct net_device *netdev,
15231 struct cfg80211_ft_event_params *ft_event)
15232{
15233 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15234 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15235 struct sk_buff *msg;
15236 void *hdr;
15237
15238 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15239
15240 if (!ft_event->target_ap)
15241 return;
15242
15243 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15244 if (!msg)
15245 return;
15246
15247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15248 if (!hdr)
15249 goto out;
15250
15251 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15252 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15253 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15254 goto out;
15255
15256 if (ft_event->ies &&
15257 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15258 goto out;
15259 if (ft_event->ric_ies &&
15260 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15261 ft_event->ric_ies))
15262 goto out;
15263
15264 genlmsg_end(msg, hdr);
15265
15266 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15267 NL80211_MCGRP_MLME, GFP_KERNEL);
15268 return;
15269 out:
15270 nlmsg_free(msg);
15271}
15272EXPORT_SYMBOL(cfg80211_ft_event);
15273
15274void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15275{
15276 struct cfg80211_registered_device *rdev;
15277 struct sk_buff *msg;
15278 void *hdr;
15279 u32 nlportid;
15280
15281 rdev = wiphy_to_rdev(wdev->wiphy);
15282 if (!rdev->crit_proto_nlportid)
15283 return;
15284
15285 nlportid = rdev->crit_proto_nlportid;
15286 rdev->crit_proto_nlportid = 0;
15287
15288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15289 if (!msg)
15290 return;
15291
15292 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15293 if (!hdr)
15294 goto nla_put_failure;
15295
15296 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15297 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15298 NL80211_ATTR_PAD))
15299 goto nla_put_failure;
15300
15301 genlmsg_end(msg, hdr);
15302
15303 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15304 return;
15305
15306 nla_put_failure:
15307 if (hdr)
15308 genlmsg_cancel(msg, hdr);
15309 nlmsg_free(msg);
15310}
15311EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15312
15313void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15314{
15315 struct wiphy *wiphy = wdev->wiphy;
15316 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15317 struct sk_buff *msg;
15318 void *hdr;
15319
15320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15321 if (!msg)
15322 return;
15323
15324 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15325 if (!hdr)
15326 goto out;
15327
15328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15329 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15330 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15331 NL80211_ATTR_PAD))
15332 goto out;
15333
15334 genlmsg_end(msg, hdr);
15335
15336 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15337 NL80211_MCGRP_MLME, GFP_KERNEL);
15338 return;
15339 out:
15340 nlmsg_free(msg);
15341}
15342
15343/* initialisation/exit functions */
15344
15345int __init nl80211_init(void)
15346{
15347 int err;
15348
15349 err = genl_register_family(&nl80211_fam);
15350 if (err)
15351 return err;
15352
15353 err = netlink_register_notifier(&nl80211_netlink_notifier);
15354 if (err)
15355 goto err_out;
15356
15357 return 0;
15358 err_out:
15359 genl_unregister_family(&nl80211_fam);
15360 return err;
15361}
15362
15363void nl80211_exit(void)
15364{
15365 netlink_unregister_notifier(&nl80211_netlink_notifier);
15366 genl_unregister_family(&nl80211_fam);
15367}
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