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ARM: dts: imx51: Add M4IF support
[linux/fpc-iii.git] / net / wireless / nl80211.c
blobc7bbe5f0aae8839bdfe5ac7b7bd02c6aad8ac8dc
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 * Copyright (C) 2018 Intel Corporation
8 */
9
10 #include <linux/if.h>
11 #include <linux/module.h>
12 #include <linux/err.h>
13 #include <linux/slab.h>
14 #include <linux/list.h>
15 #include <linux/if_ether.h>
16 #include <linux/ieee80211.h>
17 #include <linux/nl80211.h>
18 #include <linux/rtnetlink.h>
19 #include <linux/netlink.h>
20 #include <linux/nospec.h>
21 #include <linux/etherdevice.h>
22 #include <net/net_namespace.h>
23 #include <net/genetlink.h>
24 #include <net/cfg80211.h>
25 #include <net/sock.h>
26 #include <net/inet_connection_sock.h>
27 #include "core.h"
28 #include "nl80211.h"
29 #include "reg.h"
30 #include "rdev-ops.h"
31
32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
33 struct genl_info *info,
34 struct cfg80211_crypto_settings *settings,
35 int cipher_limit);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam;
39
40 /* multicast groups */
41 enum nl80211_multicast_groups {
42 NL80211_MCGRP_CONFIG,
43 NL80211_MCGRP_SCAN,
44 NL80211_MCGRP_REGULATORY,
45 NL80211_MCGRP_MLME,
46 NL80211_MCGRP_VENDOR,
47 NL80211_MCGRP_NAN,
48 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
49 };
50
51 static const struct genl_multicast_group nl80211_mcgrps[] = {
52 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
53 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
54 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
55 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
56 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
57 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
58 #ifdef CONFIG_NL80211_TESTMODE
59 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
60 #endif
61 };
62
63 /* returns ERR_PTR values */
64 static struct wireless_dev *
65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
66 {
67 struct cfg80211_registered_device *rdev;
68 struct wireless_dev *result = NULL;
69 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
70 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
71 u64 wdev_id;
72 int wiphy_idx = -1;
73 int ifidx = -1;
74
75 ASSERT_RTNL();
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
88 struct wireless_dev *wdev;
89
90 if (wiphy_net(&rdev->wiphy) != netns)
91 continue;
92
93 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
94 continue;
95
96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
97 if (have_ifidx && wdev->netdev &&
98 wdev->netdev->ifindex == ifidx) {
99 result = wdev;
100 break;
101 }
102 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
103 result = wdev;
104 break;
105 }
106 }
107
108 if (result)
109 break;
110 }
111
112 if (result)
113 return result;
114 return ERR_PTR(-ENODEV);
115 }
116
117 static struct cfg80211_registered_device *
118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
119 {
120 struct cfg80211_registered_device *rdev = NULL, *tmp;
121 struct net_device *netdev;
122
123 ASSERT_RTNL();
124
125 if (!attrs[NL80211_ATTR_WIPHY] &&
126 !attrs[NL80211_ATTR_IFINDEX] &&
127 !attrs[NL80211_ATTR_WDEV])
128 return ERR_PTR(-EINVAL);
129
130 if (attrs[NL80211_ATTR_WIPHY])
131 rdev = cfg80211_rdev_by_wiphy_idx(
132 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
133
134 if (attrs[NL80211_ATTR_WDEV]) {
135 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
136 struct wireless_dev *wdev;
137 bool found = false;
138
139 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
140 if (tmp) {
141 /* make sure wdev exists */
142 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
143 if (wdev->identifier != (u32)wdev_id)
144 continue;
145 found = true;
146 break;
147 }
148
149 if (!found)
150 tmp = NULL;
151
152 if (rdev && tmp != rdev)
153 return ERR_PTR(-EINVAL);
154 rdev = tmp;
155 }
156 }
157
158 if (attrs[NL80211_ATTR_IFINDEX]) {
159 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
160
161 netdev = __dev_get_by_index(netns, ifindex);
162 if (netdev) {
163 if (netdev->ieee80211_ptr)
164 tmp = wiphy_to_rdev(
165 netdev->ieee80211_ptr->wiphy);
166 else
167 tmp = NULL;
168
169 /* not wireless device -- return error */
170 if (!tmp)
171 return ERR_PTR(-EINVAL);
172
173 /* mismatch -- return error */
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176
177 rdev = tmp;
178 }
179 }
180
181 if (!rdev)
182 return ERR_PTR(-ENODEV);
183
184 if (netns != wiphy_net(&rdev->wiphy))
185 return ERR_PTR(-ENODEV);
186
187 return rdev;
188 }
189
190 /*
191 * This function returns a pointer to the driver
192 * that the genl_info item that is passed refers to.
193 *
194 * The result of this can be a PTR_ERR and hence must
195 * be checked with IS_ERR() for errors.
196 */
197 static struct cfg80211_registered_device *
198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
199 {
200 return __cfg80211_rdev_from_attrs(netns, info->attrs);
201 }
202
203 /* policy for the attributes */
204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
205 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
206 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
207 .len = 20-1 },
208 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
209
210 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
211 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
212 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
213 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
214 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
215
216 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
217 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
218 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
220 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
221 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
222
223 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
224 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
225 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
226
227 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
228 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
229
230 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
231 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
232 .len = WLAN_MAX_KEY_LEN },
233 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
234 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
235 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
236 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
237 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
238
239 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
240 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
241 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
242 .len = IEEE80211_MAX_DATA_LEN },
243 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
244 .len = IEEE80211_MAX_DATA_LEN },
245 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
246 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
247 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
248 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
249 .len = NL80211_MAX_SUPP_RATES },
250 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
251 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
252 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
253 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_MESH_ID_LEN },
255 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
256
257 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
258 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
259
260 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
262 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
263 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
264 .len = NL80211_MAX_SUPP_RATES },
265 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
266
267 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
268 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
269
270 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
271
272 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
273 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
274 .len = IEEE80211_MAX_DATA_LEN },
275 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
277
278 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
279 .len = IEEE80211_MAX_SSID_LEN },
280 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
281 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
282 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
283 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
284 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
285 [NL80211_ATTR_STA_FLAGS2] = {
286 .len = sizeof(struct nl80211_sta_flag_update),
287 },
288 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
289 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
290 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
291 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
292 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
293 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
294 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
295 [NL80211_ATTR_PID] = { .type = NLA_U32 },
296 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
297 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
298 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
299 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
300 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
301 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
302 .len = IEEE80211_MAX_DATA_LEN },
303 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
304 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
305 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
306 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
307 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
308 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
309 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
310 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
311 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
312 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
313 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
314 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
315 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
316 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
317 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
318 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
319 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
320 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
321 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
322 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
325 .len = IEEE80211_MAX_DATA_LEN },
326 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
327 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
328 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
329 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
331 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
332 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
334 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
335 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
336 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
337 .len = IEEE80211_MAX_DATA_LEN },
338 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
339 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
340 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
341 .len = NL80211_HT_CAPABILITY_LEN
342 },
343 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
344 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
345 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
346 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
347 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
348 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
349 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
350 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
351 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
352 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
353 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
354 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
355 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
356 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
357 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
359 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
360 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
361 .len = NL80211_VHT_CAPABILITY_LEN,
362 },
363 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
364 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
365 .len = IEEE80211_MAX_DATA_LEN },
366 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
367 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
368 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
369 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
370 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
371 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
372 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
373 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
374 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
375 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
376 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
377 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
378 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
379 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
380 .len = IEEE80211_QOS_MAP_LEN_MAX },
381 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
382 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
383 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
384 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
385 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
386 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
387 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
388 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
389 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
390 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
391 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
392 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
393 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
394 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
395 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
396 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
397 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
398 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
399 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
400 .len = VHT_MUMIMO_GROUPS_DATA_LEN
401 },
402 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
403 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
404 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
405 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
406 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
407 .len = FILS_MAX_KEK_LEN },
408 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
409 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
410 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
411 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
412 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
413 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
414 },
415 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
416 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
417 .len = FILS_ERP_MAX_USERNAME_LEN },
418 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
419 .len = FILS_ERP_MAX_REALM_LEN },
420 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
421 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
422 .len = FILS_ERP_MAX_RRK_LEN },
423 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
424 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
425 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
426 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
427
428 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
429 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
430 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
431 };
432
433 /* policy for the key attributes */
434 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
435 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
436 [NL80211_KEY_IDX] = { .type = NLA_U8 },
437 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
438 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
439 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
440 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
441 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
442 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
443 };
444
445 /* policy for the key default flags */
446 static const struct nla_policy
447 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
448 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
449 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
450 };
451
452 #ifdef CONFIG_PM
453 /* policy for WoWLAN attributes */
454 static const struct nla_policy
455 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
456 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
457 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
458 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
459 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
460 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
461 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
462 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
463 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
464 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
465 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
466 };
467
468 static const struct nla_policy
469 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
470 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
471 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
472 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
473 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
474 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
475 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
476 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
477 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
478 },
479 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
480 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
481 },
482 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
483 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
484 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
485 };
486 #endif /* CONFIG_PM */
487
488 /* policy for coalesce rule attributes */
489 static const struct nla_policy
490 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
491 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
492 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
493 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
494 };
495
496 /* policy for GTK rekey offload attributes */
497 static const struct nla_policy
498 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
499 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
500 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
501 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
502 };
503
504 static const struct nla_policy
505 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
506 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
507 .len = IEEE80211_MAX_SSID_LEN },
508 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
509 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
510 };
511
512 static const struct nla_policy
513 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
514 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
515 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
516 };
517
518 static const struct nla_policy
519 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
520 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
521 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
522 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
523 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
524 },
525 };
526
527 /* policy for NAN function attributes */
528 static const struct nla_policy
529 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
530 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
531 [NL80211_NAN_FUNC_SERVICE_ID] = {
532 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
533 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
534 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
535 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
536 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
537 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
538 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
539 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
540 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
541 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
542 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
543 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
544 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
545 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
546 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
547 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
548 };
549
550 /* policy for Service Response Filter attributes */
551 static const struct nla_policy
552 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
553 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
554 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
555 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
556 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
557 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
558 };
559
560 /* policy for packet pattern attributes */
561 static const struct nla_policy
562 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
563 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
564 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
565 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
566 };
567
568 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
569 struct netlink_callback *cb,
570 struct cfg80211_registered_device **rdev,
571 struct wireless_dev **wdev)
572 {
573 int err;
574
575 if (!cb->args[0]) {
576 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
577 genl_family_attrbuf(&nl80211_fam),
578 nl80211_fam.maxattr, nl80211_policy, NULL);
579 if (err)
580 return err;
581
582 *wdev = __cfg80211_wdev_from_attrs(
583 sock_net(skb->sk),
584 genl_family_attrbuf(&nl80211_fam));
585 if (IS_ERR(*wdev))
586 return PTR_ERR(*wdev);
587 *rdev = wiphy_to_rdev((*wdev)->wiphy);
588 /* 0 is the first index - add 1 to parse only once */
589 cb->args[0] = (*rdev)->wiphy_idx + 1;
590 cb->args[1] = (*wdev)->identifier;
591 } else {
592 /* subtract the 1 again here */
593 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
594 struct wireless_dev *tmp;
595
596 if (!wiphy)
597 return -ENODEV;
598 *rdev = wiphy_to_rdev(wiphy);
599 *wdev = NULL;
600
601 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
602 if (tmp->identifier == cb->args[1]) {
603 *wdev = tmp;
604 break;
605 }
606 }
607
608 if (!*wdev)
609 return -ENODEV;
610 }
611
612 return 0;
613 }
614
615 /* IE validation */
616 static bool is_valid_ie_attr(const struct nlattr *attr)
617 {
618 const u8 *pos;
619 int len;
620
621 if (!attr)
622 return true;
623
624 pos = nla_data(attr);
625 len = nla_len(attr);
626
627 while (len) {
628 u8 elemlen;
629
630 if (len < 2)
631 return false;
632 len -= 2;
633
634 elemlen = pos[1];
635 if (elemlen > len)
636 return false;
637
638 len -= elemlen;
639 pos += 2 + elemlen;
640 }
641
642 return true;
643 }
644
645 /* message building helper */
646 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
647 int flags, u8 cmd)
648 {
649 /* since there is no private header just add the generic one */
650 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
651 }
652
653 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
654 const struct ieee80211_reg_rule *rule)
655 {
656 int j;
657 struct nlattr *nl_wmm_rules =
658 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
659
660 if (!nl_wmm_rules)
661 goto nla_put_failure;
662
663 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
664 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
665
666 if (!nl_wmm_rule)
667 goto nla_put_failure;
668
669 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
670 rule->wmm_rule->client[j].cw_min) ||
671 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
672 rule->wmm_rule->client[j].cw_max) ||
673 nla_put_u8(msg, NL80211_WMMR_AIFSN,
674 rule->wmm_rule->client[j].aifsn) ||
675 nla_put_u8(msg, NL80211_WMMR_TXOP,
676 rule->wmm_rule->client[j].cot))
677 goto nla_put_failure;
678
679 nla_nest_end(msg, nl_wmm_rule);
680 }
681 nla_nest_end(msg, nl_wmm_rules);
682
683 return 0;
684
685 nla_put_failure:
686 return -ENOBUFS;
687 }
688
689 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
690 struct ieee80211_channel *chan,
691 bool large)
692 {
693 /* Some channels must be completely excluded from the
694 * list to protect old user-space tools from breaking
695 */
696 if (!large && chan->flags &
697 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
698 return 0;
699
700 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
701 chan->center_freq))
702 goto nla_put_failure;
703
704 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
706 goto nla_put_failure;
707 if (chan->flags & IEEE80211_CHAN_NO_IR) {
708 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
709 goto nla_put_failure;
710 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
711 goto nla_put_failure;
712 }
713 if (chan->flags & IEEE80211_CHAN_RADAR) {
714 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
715 goto nla_put_failure;
716 if (large) {
717 u32 time;
718
719 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
720
721 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
722 chan->dfs_state))
723 goto nla_put_failure;
724 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
725 time))
726 goto nla_put_failure;
727 if (nla_put_u32(msg,
728 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
729 chan->dfs_cac_ms))
730 goto nla_put_failure;
731 }
732 }
733
734 if (large) {
735 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
736 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
737 goto nla_put_failure;
738 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
739 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
740 goto nla_put_failure;
741 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
742 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
743 goto nla_put_failure;
744 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
745 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
746 goto nla_put_failure;
747 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
748 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
749 goto nla_put_failure;
750 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
751 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
752 goto nla_put_failure;
753 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
754 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
755 goto nla_put_failure;
756 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
757 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
758 goto nla_put_failure;
759 }
760
761 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
762 DBM_TO_MBM(chan->max_power)))
763 goto nla_put_failure;
764
765 if (large) {
766 const struct ieee80211_reg_rule *rule =
767 freq_reg_info(wiphy, chan->center_freq);
768
769 if (!IS_ERR(rule) && rule->wmm_rule) {
770 if (nl80211_msg_put_wmm_rules(msg, rule))
771 goto nla_put_failure;
772 }
773 }
774
775 return 0;
776
777 nla_put_failure:
778 return -ENOBUFS;
779 }
780
781 static bool nl80211_put_txq_stats(struct sk_buff *msg,
782 struct cfg80211_txq_stats *txqstats,
783 int attrtype)
784 {
785 struct nlattr *txqattr;
786
787 #define PUT_TXQVAL_U32(attr, memb) do { \
788 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
789 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
790 return false; \
791 } while (0)
792
793 txqattr = nla_nest_start(msg, attrtype);
794 if (!txqattr)
795 return false;
796
797 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
798 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
799 PUT_TXQVAL_U32(FLOWS, flows);
800 PUT_TXQVAL_U32(DROPS, drops);
801 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
802 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
803 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
804 PUT_TXQVAL_U32(COLLISIONS, collisions);
805 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
806 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
807 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
808 nla_nest_end(msg, txqattr);
809
810 #undef PUT_TXQVAL_U32
811 return true;
812 }
813
814 /* netlink command implementations */
815
816 struct key_parse {
817 struct key_params p;
818 int idx;
819 int type;
820 bool def, defmgmt;
821 bool def_uni, def_multi;
822 };
823
824 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
825 struct key_parse *k)
826 {
827 struct nlattr *tb[NL80211_KEY_MAX + 1];
828 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
829 nl80211_key_policy, info->extack);
830 if (err)
831 return err;
832
833 k->def = !!tb[NL80211_KEY_DEFAULT];
834 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
835
836 if (k->def) {
837 k->def_uni = true;
838 k->def_multi = true;
839 }
840 if (k->defmgmt)
841 k->def_multi = true;
842
843 if (tb[NL80211_KEY_IDX])
844 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
845
846 if (tb[NL80211_KEY_DATA]) {
847 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
848 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
849 }
850
851 if (tb[NL80211_KEY_SEQ]) {
852 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
853 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
854 }
855
856 if (tb[NL80211_KEY_CIPHER])
857 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
858
859 if (tb[NL80211_KEY_TYPE]) {
860 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
861 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
862 return genl_err_attr(info, -EINVAL,
863 tb[NL80211_KEY_TYPE]);
864 }
865
866 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
867 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
868
869 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
870 tb[NL80211_KEY_DEFAULT_TYPES],
871 nl80211_key_default_policy,
872 info->extack);
873 if (err)
874 return err;
875
876 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
877 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
878 }
879
880 return 0;
881 }
882
883 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
884 {
885 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
886 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
887 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
888 }
889
890 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
891 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
892 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
893 }
894
895 if (info->attrs[NL80211_ATTR_KEY_IDX])
896 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
897
898 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
899 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
900
901 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
902 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
903
904 if (k->def) {
905 k->def_uni = true;
906 k->def_multi = true;
907 }
908 if (k->defmgmt)
909 k->def_multi = true;
910
911 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
912 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
913 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
914 GENL_SET_ERR_MSG(info, "key type out of range");
915 return -EINVAL;
916 }
917 }
918
919 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
920 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
921 int err = nla_parse_nested(kdt,
922 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
923 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
924 nl80211_key_default_policy,
925 info->extack);
926 if (err)
927 return err;
928
929 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
930 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
931 }
932
933 return 0;
934 }
935
936 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
937 {
938 int err;
939
940 memset(k, 0, sizeof(*k));
941 k->idx = -1;
942 k->type = -1;
943
944 if (info->attrs[NL80211_ATTR_KEY])
945 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
946 else
947 err = nl80211_parse_key_old(info, k);
948
949 if (err)
950 return err;
951
952 if (k->def && k->defmgmt) {
953 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
954 return -EINVAL;
955 }
956
957 if (k->defmgmt) {
958 if (k->def_uni || !k->def_multi) {
959 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
960 return -EINVAL;
961 }
962 }
963
964 if (k->idx != -1) {
965 if (k->defmgmt) {
966 if (k->idx < 4 || k->idx > 5) {
967 GENL_SET_ERR_MSG(info,
968 "defmgmt key idx not 4 or 5");
969 return -EINVAL;
970 }
971 } else if (k->def) {
972 if (k->idx < 0 || k->idx > 3) {
973 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
974 return -EINVAL;
975 }
976 } else {
977 if (k->idx < 0 || k->idx > 5) {
978 GENL_SET_ERR_MSG(info, "key idx not 0-5");
979 return -EINVAL;
980 }
981 }
982 }
983
984 return 0;
985 }
986
987 static struct cfg80211_cached_keys *
988 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
989 struct genl_info *info, bool *no_ht)
990 {
991 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
992 struct key_parse parse;
993 struct nlattr *key;
994 struct cfg80211_cached_keys *result;
995 int rem, err, def = 0;
996 bool have_key = false;
997
998 nla_for_each_nested(key, keys, rem) {
999 have_key = true;
1000 break;
1001 }
1002
1003 if (!have_key)
1004 return NULL;
1005
1006 result = kzalloc(sizeof(*result), GFP_KERNEL);
1007 if (!result)
1008 return ERR_PTR(-ENOMEM);
1009
1010 result->def = -1;
1011
1012 nla_for_each_nested(key, keys, rem) {
1013 memset(&parse, 0, sizeof(parse));
1014 parse.idx = -1;
1015
1016 err = nl80211_parse_key_new(info, key, &parse);
1017 if (err)
1018 goto error;
1019 err = -EINVAL;
1020 if (!parse.p.key)
1021 goto error;
1022 if (parse.idx < 0 || parse.idx > 3) {
1023 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1024 goto error;
1025 }
1026 if (parse.def) {
1027 if (def) {
1028 GENL_SET_ERR_MSG(info,
1029 "only one key can be default");
1030 goto error;
1031 }
1032 def = 1;
1033 result->def = parse.idx;
1034 if (!parse.def_uni || !parse.def_multi)
1035 goto error;
1036 } else if (parse.defmgmt)
1037 goto error;
1038 err = cfg80211_validate_key_settings(rdev, &parse.p,
1039 parse.idx, false, NULL);
1040 if (err)
1041 goto error;
1042 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1043 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1044 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1045 err = -EINVAL;
1046 goto error;
1047 }
1048 result->params[parse.idx].cipher = parse.p.cipher;
1049 result->params[parse.idx].key_len = parse.p.key_len;
1050 result->params[parse.idx].key = result->data[parse.idx];
1051 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1052
1053 /* must be WEP key if we got here */
1054 if (no_ht)
1055 *no_ht = true;
1056 }
1057
1058 if (result->def < 0) {
1059 err = -EINVAL;
1060 GENL_SET_ERR_MSG(info, "need a default/TX key");
1061 goto error;
1062 }
1063
1064 return result;
1065 error:
1066 kfree(result);
1067 return ERR_PTR(err);
1068 }
1069
1070 static int nl80211_key_allowed(struct wireless_dev *wdev)
1071 {
1072 ASSERT_WDEV_LOCK(wdev);
1073
1074 switch (wdev->iftype) {
1075 case NL80211_IFTYPE_AP:
1076 case NL80211_IFTYPE_AP_VLAN:
1077 case NL80211_IFTYPE_P2P_GO:
1078 case NL80211_IFTYPE_MESH_POINT:
1079 break;
1080 case NL80211_IFTYPE_ADHOC:
1081 case NL80211_IFTYPE_STATION:
1082 case NL80211_IFTYPE_P2P_CLIENT:
1083 if (!wdev->current_bss)
1084 return -ENOLINK;
1085 break;
1086 case NL80211_IFTYPE_UNSPECIFIED:
1087 case NL80211_IFTYPE_OCB:
1088 case NL80211_IFTYPE_MONITOR:
1089 case NL80211_IFTYPE_NAN:
1090 case NL80211_IFTYPE_P2P_DEVICE:
1091 case NL80211_IFTYPE_WDS:
1092 case NUM_NL80211_IFTYPES:
1093 return -EINVAL;
1094 }
1095
1096 return 0;
1097 }
1098
1099 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1100 struct nlattr *tb)
1101 {
1102 struct ieee80211_channel *chan;
1103
1104 if (tb == NULL)
1105 return NULL;
1106 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1107 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1108 return NULL;
1109 return chan;
1110 }
1111
1112 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1113 {
1114 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1115 int i;
1116
1117 if (!nl_modes)
1118 goto nla_put_failure;
1119
1120 i = 0;
1121 while (ifmodes) {
1122 if ((ifmodes & 1) && nla_put_flag(msg, i))
1123 goto nla_put_failure;
1124 ifmodes >>= 1;
1125 i++;
1126 }
1127
1128 nla_nest_end(msg, nl_modes);
1129 return 0;
1130
1131 nla_put_failure:
1132 return -ENOBUFS;
1133 }
1134
1135 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1136 struct sk_buff *msg,
1137 bool large)
1138 {
1139 struct nlattr *nl_combis;
1140 int i, j;
1141
1142 nl_combis = nla_nest_start(msg,
1143 NL80211_ATTR_INTERFACE_COMBINATIONS);
1144 if (!nl_combis)
1145 goto nla_put_failure;
1146
1147 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1148 const struct ieee80211_iface_combination *c;
1149 struct nlattr *nl_combi, *nl_limits;
1150
1151 c = &wiphy->iface_combinations[i];
1152
1153 nl_combi = nla_nest_start(msg, i + 1);
1154 if (!nl_combi)
1155 goto nla_put_failure;
1156
1157 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1158 if (!nl_limits)
1159 goto nla_put_failure;
1160
1161 for (j = 0; j < c->n_limits; j++) {
1162 struct nlattr *nl_limit;
1163
1164 nl_limit = nla_nest_start(msg, j + 1);
1165 if (!nl_limit)
1166 goto nla_put_failure;
1167 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1168 c->limits[j].max))
1169 goto nla_put_failure;
1170 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1171 c->limits[j].types))
1172 goto nla_put_failure;
1173 nla_nest_end(msg, nl_limit);
1174 }
1175
1176 nla_nest_end(msg, nl_limits);
1177
1178 if (c->beacon_int_infra_match &&
1179 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1180 goto nla_put_failure;
1181 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1182 c->num_different_channels) ||
1183 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1184 c->max_interfaces))
1185 goto nla_put_failure;
1186 if (large &&
1187 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1188 c->radar_detect_widths) ||
1189 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1190 c->radar_detect_regions)))
1191 goto nla_put_failure;
1192 if (c->beacon_int_min_gcd &&
1193 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1194 c->beacon_int_min_gcd))
1195 goto nla_put_failure;
1196
1197 nla_nest_end(msg, nl_combi);
1198 }
1199
1200 nla_nest_end(msg, nl_combis);
1201
1202 return 0;
1203 nla_put_failure:
1204 return -ENOBUFS;
1205 }
1206
1207 #ifdef CONFIG_PM
1208 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1209 struct sk_buff *msg)
1210 {
1211 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1212 struct nlattr *nl_tcp;
1213
1214 if (!tcp)
1215 return 0;
1216
1217 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1218 if (!nl_tcp)
1219 return -ENOBUFS;
1220
1221 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1222 tcp->data_payload_max))
1223 return -ENOBUFS;
1224
1225 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1226 tcp->data_payload_max))
1227 return -ENOBUFS;
1228
1229 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1230 return -ENOBUFS;
1231
1232 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1233 sizeof(*tcp->tok), tcp->tok))
1234 return -ENOBUFS;
1235
1236 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1237 tcp->data_interval_max))
1238 return -ENOBUFS;
1239
1240 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1241 tcp->wake_payload_max))
1242 return -ENOBUFS;
1243
1244 nla_nest_end(msg, nl_tcp);
1245 return 0;
1246 }
1247
1248 static int nl80211_send_wowlan(struct sk_buff *msg,
1249 struct cfg80211_registered_device *rdev,
1250 bool large)
1251 {
1252 struct nlattr *nl_wowlan;
1253
1254 if (!rdev->wiphy.wowlan)
1255 return 0;
1256
1257 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1258 if (!nl_wowlan)
1259 return -ENOBUFS;
1260
1261 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1262 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1263 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1264 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1265 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1266 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1267 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1268 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1269 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1270 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1271 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1272 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1273 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1274 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1275 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1276 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1277 return -ENOBUFS;
1278
1279 if (rdev->wiphy.wowlan->n_patterns) {
1280 struct nl80211_pattern_support pat = {
1281 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1282 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1283 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1284 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1285 };
1286
1287 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1288 sizeof(pat), &pat))
1289 return -ENOBUFS;
1290 }
1291
1292 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1293 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1294 rdev->wiphy.wowlan->max_nd_match_sets))
1295 return -ENOBUFS;
1296
1297 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1298 return -ENOBUFS;
1299
1300 nla_nest_end(msg, nl_wowlan);
1301
1302 return 0;
1303 }
1304 #endif
1305
1306 static int nl80211_send_coalesce(struct sk_buff *msg,
1307 struct cfg80211_registered_device *rdev)
1308 {
1309 struct nl80211_coalesce_rule_support rule;
1310
1311 if (!rdev->wiphy.coalesce)
1312 return 0;
1313
1314 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1315 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1316 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1317 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1318 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1319 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1320
1321 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1322 return -ENOBUFS;
1323
1324 return 0;
1325 }
1326
1327 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1328 struct ieee80211_supported_band *sband)
1329 {
1330 struct nlattr *nl_rates, *nl_rate;
1331 struct ieee80211_rate *rate;
1332 int i;
1333
1334 /* add HT info */
1335 if (sband->ht_cap.ht_supported &&
1336 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1337 sizeof(sband->ht_cap.mcs),
1338 &sband->ht_cap.mcs) ||
1339 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1340 sband->ht_cap.cap) ||
1341 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1342 sband->ht_cap.ampdu_factor) ||
1343 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1344 sband->ht_cap.ampdu_density)))
1345 return -ENOBUFS;
1346
1347 /* add VHT info */
1348 if (sband->vht_cap.vht_supported &&
1349 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1350 sizeof(sband->vht_cap.vht_mcs),
1351 &sband->vht_cap.vht_mcs) ||
1352 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1353 sband->vht_cap.cap)))
1354 return -ENOBUFS;
1355
1356 /* add bitrates */
1357 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1358 if (!nl_rates)
1359 return -ENOBUFS;
1360
1361 for (i = 0; i < sband->n_bitrates; i++) {
1362 nl_rate = nla_nest_start(msg, i);
1363 if (!nl_rate)
1364 return -ENOBUFS;
1365
1366 rate = &sband->bitrates[i];
1367 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1368 rate->bitrate))
1369 return -ENOBUFS;
1370 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1371 nla_put_flag(msg,
1372 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1373 return -ENOBUFS;
1374
1375 nla_nest_end(msg, nl_rate);
1376 }
1377
1378 nla_nest_end(msg, nl_rates);
1379
1380 return 0;
1381 }
1382
1383 static int
1384 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1385 const struct ieee80211_txrx_stypes *mgmt_stypes)
1386 {
1387 u16 stypes;
1388 struct nlattr *nl_ftypes, *nl_ifs;
1389 enum nl80211_iftype ift;
1390 int i;
1391
1392 if (!mgmt_stypes)
1393 return 0;
1394
1395 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1396 if (!nl_ifs)
1397 return -ENOBUFS;
1398
1399 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1400 nl_ftypes = nla_nest_start(msg, ift);
1401 if (!nl_ftypes)
1402 return -ENOBUFS;
1403 i = 0;
1404 stypes = mgmt_stypes[ift].tx;
1405 while (stypes) {
1406 if ((stypes & 1) &&
1407 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1408 (i << 4) | IEEE80211_FTYPE_MGMT))
1409 return -ENOBUFS;
1410 stypes >>= 1;
1411 i++;
1412 }
1413 nla_nest_end(msg, nl_ftypes);
1414 }
1415
1416 nla_nest_end(msg, nl_ifs);
1417
1418 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1419 if (!nl_ifs)
1420 return -ENOBUFS;
1421
1422 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1423 nl_ftypes = nla_nest_start(msg, ift);
1424 if (!nl_ftypes)
1425 return -ENOBUFS;
1426 i = 0;
1427 stypes = mgmt_stypes[ift].rx;
1428 while (stypes) {
1429 if ((stypes & 1) &&
1430 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1431 (i << 4) | IEEE80211_FTYPE_MGMT))
1432 return -ENOBUFS;
1433 stypes >>= 1;
1434 i++;
1435 }
1436 nla_nest_end(msg, nl_ftypes);
1437 }
1438 nla_nest_end(msg, nl_ifs);
1439
1440 return 0;
1441 }
1442
1443 #define CMD(op, n) \
1444 do { \
1445 if (rdev->ops->op) { \
1446 i++; \
1447 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1448 goto nla_put_failure; \
1449 } \
1450 } while (0)
1451
1452 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1453 struct sk_buff *msg)
1454 {
1455 int i = 0;
1456
1457 /*
1458 * do *NOT* add anything into this function, new things need to be
1459 * advertised only to new versions of userspace that can deal with
1460 * the split (and they can't possibly care about new features...
1461 */
1462 CMD(add_virtual_intf, NEW_INTERFACE);
1463 CMD(change_virtual_intf, SET_INTERFACE);
1464 CMD(add_key, NEW_KEY);
1465 CMD(start_ap, START_AP);
1466 CMD(add_station, NEW_STATION);
1467 CMD(add_mpath, NEW_MPATH);
1468 CMD(update_mesh_config, SET_MESH_CONFIG);
1469 CMD(change_bss, SET_BSS);
1470 CMD(auth, AUTHENTICATE);
1471 CMD(assoc, ASSOCIATE);
1472 CMD(deauth, DEAUTHENTICATE);
1473 CMD(disassoc, DISASSOCIATE);
1474 CMD(join_ibss, JOIN_IBSS);
1475 CMD(join_mesh, JOIN_MESH);
1476 CMD(set_pmksa, SET_PMKSA);
1477 CMD(del_pmksa, DEL_PMKSA);
1478 CMD(flush_pmksa, FLUSH_PMKSA);
1479 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1480 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1481 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1482 CMD(mgmt_tx, FRAME);
1483 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1484 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1485 i++;
1486 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1487 goto nla_put_failure;
1488 }
1489 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1490 rdev->ops->join_mesh) {
1491 i++;
1492 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1493 goto nla_put_failure;
1494 }
1495 CMD(set_wds_peer, SET_WDS_PEER);
1496 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1497 CMD(tdls_mgmt, TDLS_MGMT);
1498 CMD(tdls_oper, TDLS_OPER);
1499 }
1500 if (rdev->wiphy.max_sched_scan_reqs)
1501 CMD(sched_scan_start, START_SCHED_SCAN);
1502 CMD(probe_client, PROBE_CLIENT);
1503 CMD(set_noack_map, SET_NOACK_MAP);
1504 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1505 i++;
1506 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1507 goto nla_put_failure;
1508 }
1509 CMD(start_p2p_device, START_P2P_DEVICE);
1510 CMD(set_mcast_rate, SET_MCAST_RATE);
1511 #ifdef CONFIG_NL80211_TESTMODE
1512 CMD(testmode_cmd, TESTMODE);
1513 #endif
1514
1515 if (rdev->ops->connect || rdev->ops->auth) {
1516 i++;
1517 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1518 goto nla_put_failure;
1519 }
1520
1521 if (rdev->ops->disconnect || rdev->ops->deauth) {
1522 i++;
1523 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1524 goto nla_put_failure;
1525 }
1526
1527 return i;
1528 nla_put_failure:
1529 return -ENOBUFS;
1530 }
1531
1532 struct nl80211_dump_wiphy_state {
1533 s64 filter_wiphy;
1534 long start;
1535 long split_start, band_start, chan_start, capa_start;
1536 bool split;
1537 };
1538
1539 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1540 enum nl80211_commands cmd,
1541 struct sk_buff *msg, u32 portid, u32 seq,
1542 int flags, struct nl80211_dump_wiphy_state *state)
1543 {
1544 void *hdr;
1545 struct nlattr *nl_bands, *nl_band;
1546 struct nlattr *nl_freqs, *nl_freq;
1547 struct nlattr *nl_cmds;
1548 enum nl80211_band band;
1549 struct ieee80211_channel *chan;
1550 int i;
1551 const struct ieee80211_txrx_stypes *mgmt_stypes =
1552 rdev->wiphy.mgmt_stypes;
1553 u32 features;
1554
1555 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1556 if (!hdr)
1557 return -ENOBUFS;
1558
1559 if (WARN_ON(!state))
1560 return -EINVAL;
1561
1562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1563 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1564 wiphy_name(&rdev->wiphy)) ||
1565 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1566 cfg80211_rdev_list_generation))
1567 goto nla_put_failure;
1568
1569 if (cmd != NL80211_CMD_NEW_WIPHY)
1570 goto finish;
1571
1572 switch (state->split_start) {
1573 case 0:
1574 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1575 rdev->wiphy.retry_short) ||
1576 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1577 rdev->wiphy.retry_long) ||
1578 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1579 rdev->wiphy.frag_threshold) ||
1580 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1581 rdev->wiphy.rts_threshold) ||
1582 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1583 rdev->wiphy.coverage_class) ||
1584 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1585 rdev->wiphy.max_scan_ssids) ||
1586 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1587 rdev->wiphy.max_sched_scan_ssids) ||
1588 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1589 rdev->wiphy.max_scan_ie_len) ||
1590 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1591 rdev->wiphy.max_sched_scan_ie_len) ||
1592 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1593 rdev->wiphy.max_match_sets) ||
1594 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1595 rdev->wiphy.max_sched_scan_plans) ||
1596 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1597 rdev->wiphy.max_sched_scan_plan_interval) ||
1598 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1599 rdev->wiphy.max_sched_scan_plan_iterations))
1600 goto nla_put_failure;
1601
1602 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1603 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1604 goto nla_put_failure;
1605 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1606 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1607 goto nla_put_failure;
1608 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1609 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1610 goto nla_put_failure;
1611 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1612 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1613 goto nla_put_failure;
1614 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1615 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1616 goto nla_put_failure;
1617 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1618 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1619 goto nla_put_failure;
1620 state->split_start++;
1621 if (state->split)
1622 break;
1623 case 1:
1624 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1625 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1626 rdev->wiphy.cipher_suites))
1627 goto nla_put_failure;
1628
1629 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1630 rdev->wiphy.max_num_pmkids))
1631 goto nla_put_failure;
1632
1633 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1634 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1635 goto nla_put_failure;
1636
1637 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1638 rdev->wiphy.available_antennas_tx) ||
1639 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1640 rdev->wiphy.available_antennas_rx))
1641 goto nla_put_failure;
1642
1643 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1644 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1645 rdev->wiphy.probe_resp_offload))
1646 goto nla_put_failure;
1647
1648 if ((rdev->wiphy.available_antennas_tx ||
1649 rdev->wiphy.available_antennas_rx) &&
1650 rdev->ops->get_antenna) {
1651 u32 tx_ant = 0, rx_ant = 0;
1652 int res;
1653
1654 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1655 if (!res) {
1656 if (nla_put_u32(msg,
1657 NL80211_ATTR_WIPHY_ANTENNA_TX,
1658 tx_ant) ||
1659 nla_put_u32(msg,
1660 NL80211_ATTR_WIPHY_ANTENNA_RX,
1661 rx_ant))
1662 goto nla_put_failure;
1663 }
1664 }
1665
1666 state->split_start++;
1667 if (state->split)
1668 break;
1669 case 2:
1670 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1671 rdev->wiphy.interface_modes))
1672 goto nla_put_failure;
1673 state->split_start++;
1674 if (state->split)
1675 break;
1676 case 3:
1677 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1678 if (!nl_bands)
1679 goto nla_put_failure;
1680
1681 for (band = state->band_start;
1682 band < NUM_NL80211_BANDS; band++) {
1683 struct ieee80211_supported_band *sband;
1684
1685 sband = rdev->wiphy.bands[band];
1686
1687 if (!sband)
1688 continue;
1689
1690 nl_band = nla_nest_start(msg, band);
1691 if (!nl_band)
1692 goto nla_put_failure;
1693
1694 switch (state->chan_start) {
1695 case 0:
1696 if (nl80211_send_band_rateinfo(msg, sband))
1697 goto nla_put_failure;
1698 state->chan_start++;
1699 if (state->split)
1700 break;
1701 default:
1702 /* add frequencies */
1703 nl_freqs = nla_nest_start(
1704 msg, NL80211_BAND_ATTR_FREQS);
1705 if (!nl_freqs)
1706 goto nla_put_failure;
1707
1708 for (i = state->chan_start - 1;
1709 i < sband->n_channels;
1710 i++) {
1711 nl_freq = nla_nest_start(msg, i);
1712 if (!nl_freq)
1713 goto nla_put_failure;
1714
1715 chan = &sband->channels[i];
1716
1717 if (nl80211_msg_put_channel(
1718 msg, &rdev->wiphy, chan,
1719 state->split))
1720 goto nla_put_failure;
1721
1722 nla_nest_end(msg, nl_freq);
1723 if (state->split)
1724 break;
1725 }
1726 if (i < sband->n_channels)
1727 state->chan_start = i + 2;
1728 else
1729 state->chan_start = 0;
1730 nla_nest_end(msg, nl_freqs);
1731 }
1732
1733 nla_nest_end(msg, nl_band);
1734
1735 if (state->split) {
1736 /* start again here */
1737 if (state->chan_start)
1738 band--;
1739 break;
1740 }
1741 }
1742 nla_nest_end(msg, nl_bands);
1743
1744 if (band < NUM_NL80211_BANDS)
1745 state->band_start = band + 1;
1746 else
1747 state->band_start = 0;
1748
1749 /* if bands & channels are done, continue outside */
1750 if (state->band_start == 0 && state->chan_start == 0)
1751 state->split_start++;
1752 if (state->split)
1753 break;
1754 case 4:
1755 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1756 if (!nl_cmds)
1757 goto nla_put_failure;
1758
1759 i = nl80211_add_commands_unsplit(rdev, msg);
1760 if (i < 0)
1761 goto nla_put_failure;
1762 if (state->split) {
1763 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1764 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1765 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1766 CMD(channel_switch, CHANNEL_SWITCH);
1767 CMD(set_qos_map, SET_QOS_MAP);
1768 if (rdev->wiphy.features &
1769 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1770 CMD(add_tx_ts, ADD_TX_TS);
1771 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1772 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1773 }
1774 #undef CMD
1775
1776 nla_nest_end(msg, nl_cmds);
1777 state->split_start++;
1778 if (state->split)
1779 break;
1780 case 5:
1781 if (rdev->ops->remain_on_channel &&
1782 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1783 nla_put_u32(msg,
1784 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1785 rdev->wiphy.max_remain_on_channel_duration))
1786 goto nla_put_failure;
1787
1788 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1789 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1790 goto nla_put_failure;
1791
1792 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1793 goto nla_put_failure;
1794 state->split_start++;
1795 if (state->split)
1796 break;
1797 case 6:
1798 #ifdef CONFIG_PM
1799 if (nl80211_send_wowlan(msg, rdev, state->split))
1800 goto nla_put_failure;
1801 state->split_start++;
1802 if (state->split)
1803 break;
1804 #else
1805 state->split_start++;
1806 #endif
1807 case 7:
1808 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1809 rdev->wiphy.software_iftypes))
1810 goto nla_put_failure;
1811
1812 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1813 state->split))
1814 goto nla_put_failure;
1815
1816 state->split_start++;
1817 if (state->split)
1818 break;
1819 case 8:
1820 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1821 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1822 rdev->wiphy.ap_sme_capa))
1823 goto nla_put_failure;
1824
1825 features = rdev->wiphy.features;
1826 /*
1827 * We can only add the per-channel limit information if the
1828 * dump is split, otherwise it makes it too big. Therefore
1829 * only advertise it in that case.
1830 */
1831 if (state->split)
1832 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1833 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1834 goto nla_put_failure;
1835
1836 if (rdev->wiphy.ht_capa_mod_mask &&
1837 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1838 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1839 rdev->wiphy.ht_capa_mod_mask))
1840 goto nla_put_failure;
1841
1842 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1843 rdev->wiphy.max_acl_mac_addrs &&
1844 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1845 rdev->wiphy.max_acl_mac_addrs))
1846 goto nla_put_failure;
1847
1848 /*
1849 * Any information below this point is only available to
1850 * applications that can deal with it being split. This
1851 * helps ensure that newly added capabilities don't break
1852 * older tools by overrunning their buffers.
1853 *
1854 * We still increment split_start so that in the split
1855 * case we'll continue with more data in the next round,
1856 * but break unconditionally so unsplit data stops here.
1857 */
1858 state->split_start++;
1859 break;
1860 case 9:
1861 if (rdev->wiphy.extended_capabilities &&
1862 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1863 rdev->wiphy.extended_capabilities_len,
1864 rdev->wiphy.extended_capabilities) ||
1865 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1866 rdev->wiphy.extended_capabilities_len,
1867 rdev->wiphy.extended_capabilities_mask)))
1868 goto nla_put_failure;
1869
1870 if (rdev->wiphy.vht_capa_mod_mask &&
1871 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1872 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1873 rdev->wiphy.vht_capa_mod_mask))
1874 goto nla_put_failure;
1875
1876 state->split_start++;
1877 break;
1878 case 10:
1879 if (nl80211_send_coalesce(msg, rdev))
1880 goto nla_put_failure;
1881
1882 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1883 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1884 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1885 goto nla_put_failure;
1886
1887 if (rdev->wiphy.max_ap_assoc_sta &&
1888 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1889 rdev->wiphy.max_ap_assoc_sta))
1890 goto nla_put_failure;
1891
1892 state->split_start++;
1893 break;
1894 case 11:
1895 if (rdev->wiphy.n_vendor_commands) {
1896 const struct nl80211_vendor_cmd_info *info;
1897 struct nlattr *nested;
1898
1899 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1900 if (!nested)
1901 goto nla_put_failure;
1902
1903 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1904 info = &rdev->wiphy.vendor_commands[i].info;
1905 if (nla_put(msg, i + 1, sizeof(*info), info))
1906 goto nla_put_failure;
1907 }
1908 nla_nest_end(msg, nested);
1909 }
1910
1911 if (rdev->wiphy.n_vendor_events) {
1912 const struct nl80211_vendor_cmd_info *info;
1913 struct nlattr *nested;
1914
1915 nested = nla_nest_start(msg,
1916 NL80211_ATTR_VENDOR_EVENTS);
1917 if (!nested)
1918 goto nla_put_failure;
1919
1920 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1921 info = &rdev->wiphy.vendor_events[i];
1922 if (nla_put(msg, i + 1, sizeof(*info), info))
1923 goto nla_put_failure;
1924 }
1925 nla_nest_end(msg, nested);
1926 }
1927 state->split_start++;
1928 break;
1929 case 12:
1930 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1931 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1932 rdev->wiphy.max_num_csa_counters))
1933 goto nla_put_failure;
1934
1935 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1936 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1937 goto nla_put_failure;
1938
1939 if (rdev->wiphy.max_sched_scan_reqs &&
1940 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1941 rdev->wiphy.max_sched_scan_reqs))
1942 goto nla_put_failure;
1943
1944 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1945 sizeof(rdev->wiphy.ext_features),
1946 rdev->wiphy.ext_features))
1947 goto nla_put_failure;
1948
1949 if (rdev->wiphy.bss_select_support) {
1950 struct nlattr *nested;
1951 u32 bss_select_support = rdev->wiphy.bss_select_support;
1952
1953 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1954 if (!nested)
1955 goto nla_put_failure;
1956
1957 i = 0;
1958 while (bss_select_support) {
1959 if ((bss_select_support & 1) &&
1960 nla_put_flag(msg, i))
1961 goto nla_put_failure;
1962 i++;
1963 bss_select_support >>= 1;
1964 }
1965 nla_nest_end(msg, nested);
1966 }
1967
1968 state->split_start++;
1969 break;
1970 case 13:
1971 if (rdev->wiphy.num_iftype_ext_capab &&
1972 rdev->wiphy.iftype_ext_capab) {
1973 struct nlattr *nested_ext_capab, *nested;
1974
1975 nested = nla_nest_start(msg,
1976 NL80211_ATTR_IFTYPE_EXT_CAPA);
1977 if (!nested)
1978 goto nla_put_failure;
1979
1980 for (i = state->capa_start;
1981 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1982 const struct wiphy_iftype_ext_capab *capab;
1983
1984 capab = &rdev->wiphy.iftype_ext_capab[i];
1985
1986 nested_ext_capab = nla_nest_start(msg, i);
1987 if (!nested_ext_capab ||
1988 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1989 capab->iftype) ||
1990 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1991 capab->extended_capabilities_len,
1992 capab->extended_capabilities) ||
1993 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1994 capab->extended_capabilities_len,
1995 capab->extended_capabilities_mask))
1996 goto nla_put_failure;
1997
1998 nla_nest_end(msg, nested_ext_capab);
1999 if (state->split)
2000 break;
2001 }
2002 nla_nest_end(msg, nested);
2003 if (i < rdev->wiphy.num_iftype_ext_capab) {
2004 state->capa_start = i + 1;
2005 break;
2006 }
2007 }
2008
2009 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2010 rdev->wiphy.nan_supported_bands))
2011 goto nla_put_failure;
2012
2013 if (wiphy_ext_feature_isset(&rdev->wiphy,
2014 NL80211_EXT_FEATURE_TXQS)) {
2015 struct cfg80211_txq_stats txqstats = {};
2016 int res;
2017
2018 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2019 if (!res &&
2020 !nl80211_put_txq_stats(msg, &txqstats,
2021 NL80211_ATTR_TXQ_STATS))
2022 goto nla_put_failure;
2023
2024 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2025 rdev->wiphy.txq_limit))
2026 goto nla_put_failure;
2027 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2028 rdev->wiphy.txq_memory_limit))
2029 goto nla_put_failure;
2030 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2031 rdev->wiphy.txq_quantum))
2032 goto nla_put_failure;
2033 }
2034
2035 /* done */
2036 state->split_start = 0;
2037 break;
2038 }
2039 finish:
2040 genlmsg_end(msg, hdr);
2041 return 0;
2042
2043 nla_put_failure:
2044 genlmsg_cancel(msg, hdr);
2045 return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2049 struct netlink_callback *cb,
2050 struct nl80211_dump_wiphy_state *state)
2051 {
2052 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2053 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2054 nl80211_fam.maxattr, nl80211_policy, NULL);
2055 /* ignore parse errors for backward compatibility */
2056 if (ret)
2057 return 0;
2058
2059 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2060 if (tb[NL80211_ATTR_WIPHY])
2061 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2062 if (tb[NL80211_ATTR_WDEV])
2063 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2064 if (tb[NL80211_ATTR_IFINDEX]) {
2065 struct net_device *netdev;
2066 struct cfg80211_registered_device *rdev;
2067 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2068
2069 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2070 if (!netdev)
2071 return -ENODEV;
2072 if (netdev->ieee80211_ptr) {
2073 rdev = wiphy_to_rdev(
2074 netdev->ieee80211_ptr->wiphy);
2075 state->filter_wiphy = rdev->wiphy_idx;
2076 }
2077 }
2078
2079 return 0;
2080 }
2081
2082 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2083 {
2084 int idx = 0, ret;
2085 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2086 struct cfg80211_registered_device *rdev;
2087
2088 rtnl_lock();
2089 if (!state) {
2090 state = kzalloc(sizeof(*state), GFP_KERNEL);
2091 if (!state) {
2092 rtnl_unlock();
2093 return -ENOMEM;
2094 }
2095 state->filter_wiphy = -1;
2096 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2097 if (ret) {
2098 kfree(state);
2099 rtnl_unlock();
2100 return ret;
2101 }
2102 cb->args[0] = (long)state;
2103 }
2104
2105 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2106 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2107 continue;
2108 if (++idx <= state->start)
2109 continue;
2110 if (state->filter_wiphy != -1 &&
2111 state->filter_wiphy != rdev->wiphy_idx)
2112 continue;
2113 /* attempt to fit multiple wiphy data chunks into the skb */
2114 do {
2115 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2116 skb,
2117 NETLINK_CB(cb->skb).portid,
2118 cb->nlh->nlmsg_seq,
2119 NLM_F_MULTI, state);
2120 if (ret < 0) {
2121 /*
2122 * If sending the wiphy data didn't fit (ENOBUFS
2123 * or EMSGSIZE returned), this SKB is still
2124 * empty (so it's not too big because another
2125 * wiphy dataset is already in the skb) and
2126 * we've not tried to adjust the dump allocation
2127 * yet ... then adjust the alloc size to be
2128 * bigger, and return 1 but with the empty skb.
2129 * This results in an empty message being RX'ed
2130 * in userspace, but that is ignored.
2131 *
2132 * We can then retry with the larger buffer.
2133 */
2134 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2135 !skb->len && !state->split &&
2136 cb->min_dump_alloc < 4096) {
2137 cb->min_dump_alloc = 4096;
2138 state->split_start = 0;
2139 rtnl_unlock();
2140 return 1;
2141 }
2142 idx--;
2143 break;
2144 }
2145 } while (state->split_start > 0);
2146 break;
2147 }
2148 rtnl_unlock();
2149
2150 state->start = idx;
2151
2152 return skb->len;
2153 }
2154
2155 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2156 {
2157 kfree((void *)cb->args[0]);
2158 return 0;
2159 }
2160
2161 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2162 {
2163 struct sk_buff *msg;
2164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2165 struct nl80211_dump_wiphy_state state = {};
2166
2167 msg = nlmsg_new(4096, GFP_KERNEL);
2168 if (!msg)
2169 return -ENOMEM;
2170
2171 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2172 info->snd_portid, info->snd_seq, 0,
2173 &state) < 0) {
2174 nlmsg_free(msg);
2175 return -ENOBUFS;
2176 }
2177
2178 return genlmsg_reply(msg, info);
2179 }
2180
2181 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2182 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2183 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2184 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2185 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2186 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2187 };
2188
2189 static int parse_txq_params(struct nlattr *tb[],
2190 struct ieee80211_txq_params *txq_params)
2191 {
2192 u8 ac;
2193
2194 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2195 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2196 !tb[NL80211_TXQ_ATTR_AIFS])
2197 return -EINVAL;
2198
2199 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2200 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2201 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2202 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2203 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2204
2205 if (ac >= NL80211_NUM_ACS)
2206 return -EINVAL;
2207 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2208 return 0;
2209 }
2210
2211 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2212 {
2213 /*
2214 * You can only set the channel explicitly for WDS interfaces,
2215 * all others have their channel managed via their respective
2216 * "establish a connection" command (connect, join, ...)
2217 *
2218 * For AP/GO and mesh mode, the channel can be set with the
2219 * channel userspace API, but is only stored and passed to the
2220 * low-level driver when the AP starts or the mesh is joined.
2221 * This is for backward compatibility, userspace can also give
2222 * the channel in the start-ap or join-mesh commands instead.
2223 *
2224 * Monitors are special as they are normally slaved to
2225 * whatever else is going on, so they have their own special
2226 * operation to set the monitor channel if possible.
2227 */
2228 return !wdev ||
2229 wdev->iftype == NL80211_IFTYPE_AP ||
2230 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2231 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2232 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2233 }
2234
2235 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2236 struct genl_info *info,
2237 struct cfg80211_chan_def *chandef)
2238 {
2239 u32 control_freq;
2240
2241 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2242 return -EINVAL;
2243
2244 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2245
2246 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2247 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2248 chandef->center_freq1 = control_freq;
2249 chandef->center_freq2 = 0;
2250
2251 /* Primary channel not allowed */
2252 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2253 return -EINVAL;
2254
2255 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2256 enum nl80211_channel_type chantype;
2257
2258 chantype = nla_get_u32(
2259 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2260
2261 switch (chantype) {
2262 case NL80211_CHAN_NO_HT:
2263 case NL80211_CHAN_HT20:
2264 case NL80211_CHAN_HT40PLUS:
2265 case NL80211_CHAN_HT40MINUS:
2266 cfg80211_chandef_create(chandef, chandef->chan,
2267 chantype);
2268 /* user input for center_freq is incorrect */
2269 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2270 chandef->center_freq1 != nla_get_u32(
2271 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2272 return -EINVAL;
2273 /* center_freq2 must be zero */
2274 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2275 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2276 return -EINVAL;
2277 break;
2278 default:
2279 return -EINVAL;
2280 }
2281 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2282 chandef->width =
2283 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2284 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2285 chandef->center_freq1 =
2286 nla_get_u32(
2287 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2288 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2289 chandef->center_freq2 =
2290 nla_get_u32(
2291 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2292 }
2293
2294 if (!cfg80211_chandef_valid(chandef))
2295 return -EINVAL;
2296
2297 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2298 IEEE80211_CHAN_DISABLED))
2299 return -EINVAL;
2300
2301 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2302 chandef->width == NL80211_CHAN_WIDTH_10) &&
2303 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2304 return -EINVAL;
2305
2306 return 0;
2307 }
2308
2309 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2310 struct net_device *dev,
2311 struct genl_info *info)
2312 {
2313 struct cfg80211_chan_def chandef;
2314 int result;
2315 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2316 struct wireless_dev *wdev = NULL;
2317
2318 if (dev)
2319 wdev = dev->ieee80211_ptr;
2320 if (!nl80211_can_set_dev_channel(wdev))
2321 return -EOPNOTSUPP;
2322 if (wdev)
2323 iftype = wdev->iftype;
2324
2325 result = nl80211_parse_chandef(rdev, info, &chandef);
2326 if (result)
2327 return result;
2328
2329 switch (iftype) {
2330 case NL80211_IFTYPE_AP:
2331 case NL80211_IFTYPE_P2P_GO:
2332 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2333 iftype)) {
2334 result = -EINVAL;
2335 break;
2336 }
2337 if (wdev->beacon_interval) {
2338 if (!dev || !rdev->ops->set_ap_chanwidth ||
2339 !(rdev->wiphy.features &
2340 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2341 result = -EBUSY;
2342 break;
2343 }
2344
2345 /* Only allow dynamic channel width changes */
2346 if (chandef.chan != wdev->preset_chandef.chan) {
2347 result = -EBUSY;
2348 break;
2349 }
2350 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2351 if (result)
2352 break;
2353 }
2354 wdev->preset_chandef = chandef;
2355 result = 0;
2356 break;
2357 case NL80211_IFTYPE_MESH_POINT:
2358 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2359 break;
2360 case NL80211_IFTYPE_MONITOR:
2361 result = cfg80211_set_monitor_channel(rdev, &chandef);
2362 break;
2363 default:
2364 result = -EINVAL;
2365 }
2366
2367 return result;
2368 }
2369
2370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2371 {
2372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2373 struct net_device *netdev = info->user_ptr[1];
2374
2375 return __nl80211_set_channel(rdev, netdev, info);
2376 }
2377
2378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2379 {
2380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381 struct net_device *dev = info->user_ptr[1];
2382 struct wireless_dev *wdev = dev->ieee80211_ptr;
2383 const u8 *bssid;
2384
2385 if (!info->attrs[NL80211_ATTR_MAC])
2386 return -EINVAL;
2387
2388 if (netif_running(dev))
2389 return -EBUSY;
2390
2391 if (!rdev->ops->set_wds_peer)
2392 return -EOPNOTSUPP;
2393
2394 if (wdev->iftype != NL80211_IFTYPE_WDS)
2395 return -EOPNOTSUPP;
2396
2397 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2398 return rdev_set_wds_peer(rdev, dev, bssid);
2399 }
2400
2401 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2402 {
2403 struct cfg80211_registered_device *rdev;
2404 struct net_device *netdev = NULL;
2405 struct wireless_dev *wdev;
2406 int result = 0, rem_txq_params = 0;
2407 struct nlattr *nl_txq_params;
2408 u32 changed;
2409 u8 retry_short = 0, retry_long = 0;
2410 u32 frag_threshold = 0, rts_threshold = 0;
2411 u8 coverage_class = 0;
2412 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2413
2414 ASSERT_RTNL();
2415
2416 /*
2417 * Try to find the wiphy and netdev. Normally this
2418 * function shouldn't need the netdev, but this is
2419 * done for backward compatibility -- previously
2420 * setting the channel was done per wiphy, but now
2421 * it is per netdev. Previous userland like hostapd
2422 * also passed a netdev to set_wiphy, so that it is
2423 * possible to let that go to the right netdev!
2424 */
2425
2426 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2427 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2428
2429 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2430 if (netdev && netdev->ieee80211_ptr)
2431 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2432 else
2433 netdev = NULL;
2434 }
2435
2436 if (!netdev) {
2437 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2438 info->attrs);
2439 if (IS_ERR(rdev))
2440 return PTR_ERR(rdev);
2441 wdev = NULL;
2442 netdev = NULL;
2443 result = 0;
2444 } else
2445 wdev = netdev->ieee80211_ptr;
2446
2447 /*
2448 * end workaround code, by now the rdev is available
2449 * and locked, and wdev may or may not be NULL.
2450 */
2451
2452 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2453 result = cfg80211_dev_rename(
2454 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2455
2456 if (result)
2457 return result;
2458
2459 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2460 struct ieee80211_txq_params txq_params;
2461 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2462
2463 if (!rdev->ops->set_txq_params)
2464 return -EOPNOTSUPP;
2465
2466 if (!netdev)
2467 return -EINVAL;
2468
2469 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2470 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2471 return -EINVAL;
2472
2473 if (!netif_running(netdev))
2474 return -ENETDOWN;
2475
2476 nla_for_each_nested(nl_txq_params,
2477 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2478 rem_txq_params) {
2479 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2480 nl_txq_params,
2481 txq_params_policy,
2482 info->extack);
2483 if (result)
2484 return result;
2485 result = parse_txq_params(tb, &txq_params);
2486 if (result)
2487 return result;
2488
2489 result = rdev_set_txq_params(rdev, netdev,
2490 &txq_params);
2491 if (result)
2492 return result;
2493 }
2494 }
2495
2496 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2497 result = __nl80211_set_channel(
2498 rdev,
2499 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2500 info);
2501 if (result)
2502 return result;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2506 struct wireless_dev *txp_wdev = wdev;
2507 enum nl80211_tx_power_setting type;
2508 int idx, mbm = 0;
2509
2510 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2511 txp_wdev = NULL;
2512
2513 if (!rdev->ops->set_tx_power)
2514 return -EOPNOTSUPP;
2515
2516 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2517 type = nla_get_u32(info->attrs[idx]);
2518
2519 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2520 (type != NL80211_TX_POWER_AUTOMATIC))
2521 return -EINVAL;
2522
2523 if (type != NL80211_TX_POWER_AUTOMATIC) {
2524 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2525 mbm = nla_get_u32(info->attrs[idx]);
2526 }
2527
2528 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2529 if (result)
2530 return result;
2531 }
2532
2533 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2534 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2535 u32 tx_ant, rx_ant;
2536
2537 if ((!rdev->wiphy.available_antennas_tx &&
2538 !rdev->wiphy.available_antennas_rx) ||
2539 !rdev->ops->set_antenna)
2540 return -EOPNOTSUPP;
2541
2542 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2543 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2544
2545 /* reject antenna configurations which don't match the
2546 * available antenna masks, except for the "all" mask */
2547 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2548 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2549 return -EINVAL;
2550
2551 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2552 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2553
2554 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2555 if (result)
2556 return result;
2557 }
2558
2559 changed = 0;
2560
2561 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2562 retry_short = nla_get_u8(
2563 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2564 if (retry_short == 0)
2565 return -EINVAL;
2566
2567 changed |= WIPHY_PARAM_RETRY_SHORT;
2568 }
2569
2570 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2571 retry_long = nla_get_u8(
2572 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2573 if (retry_long == 0)
2574 return -EINVAL;
2575
2576 changed |= WIPHY_PARAM_RETRY_LONG;
2577 }
2578
2579 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2580 frag_threshold = nla_get_u32(
2581 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2582 if (frag_threshold < 256)
2583 return -EINVAL;
2584
2585 if (frag_threshold != (u32) -1) {
2586 /*
2587 * Fragments (apart from the last one) are required to
2588 * have even length. Make the fragmentation code
2589 * simpler by stripping LSB should someone try to use
2590 * odd threshold value.
2591 */
2592 frag_threshold &= ~0x1;
2593 }
2594 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2595 }
2596
2597 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2598 rts_threshold = nla_get_u32(
2599 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2600 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2601 }
2602
2603 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2604 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2605 return -EINVAL;
2606
2607 coverage_class = nla_get_u8(
2608 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2609 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2610 }
2611
2612 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2613 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2614 return -EOPNOTSUPP;
2615
2616 changed |= WIPHY_PARAM_DYN_ACK;
2617 }
2618
2619 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2620 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2621 NL80211_EXT_FEATURE_TXQS))
2622 return -EOPNOTSUPP;
2623 txq_limit = nla_get_u32(
2624 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2625 changed |= WIPHY_PARAM_TXQ_LIMIT;
2626 }
2627
2628 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2629 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2630 NL80211_EXT_FEATURE_TXQS))
2631 return -EOPNOTSUPP;
2632 txq_memory_limit = nla_get_u32(
2633 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2634 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2635 }
2636
2637 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2638 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2639 NL80211_EXT_FEATURE_TXQS))
2640 return -EOPNOTSUPP;
2641 txq_quantum = nla_get_u32(
2642 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2643 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2644 }
2645
2646 if (changed) {
2647 u8 old_retry_short, old_retry_long;
2648 u32 old_frag_threshold, old_rts_threshold;
2649 u8 old_coverage_class;
2650 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2651
2652 if (!rdev->ops->set_wiphy_params)
2653 return -EOPNOTSUPP;
2654
2655 old_retry_short = rdev->wiphy.retry_short;
2656 old_retry_long = rdev->wiphy.retry_long;
2657 old_frag_threshold = rdev->wiphy.frag_threshold;
2658 old_rts_threshold = rdev->wiphy.rts_threshold;
2659 old_coverage_class = rdev->wiphy.coverage_class;
2660 old_txq_limit = rdev->wiphy.txq_limit;
2661 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2662 old_txq_quantum = rdev->wiphy.txq_quantum;
2663
2664 if (changed & WIPHY_PARAM_RETRY_SHORT)
2665 rdev->wiphy.retry_short = retry_short;
2666 if (changed & WIPHY_PARAM_RETRY_LONG)
2667 rdev->wiphy.retry_long = retry_long;
2668 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2669 rdev->wiphy.frag_threshold = frag_threshold;
2670 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2671 rdev->wiphy.rts_threshold = rts_threshold;
2672 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2673 rdev->wiphy.coverage_class = coverage_class;
2674 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2675 rdev->wiphy.txq_limit = txq_limit;
2676 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2677 rdev->wiphy.txq_memory_limit = txq_memory_limit;
2678 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2679 rdev->wiphy.txq_quantum = txq_quantum;
2680
2681 result = rdev_set_wiphy_params(rdev, changed);
2682 if (result) {
2683 rdev->wiphy.retry_short = old_retry_short;
2684 rdev->wiphy.retry_long = old_retry_long;
2685 rdev->wiphy.frag_threshold = old_frag_threshold;
2686 rdev->wiphy.rts_threshold = old_rts_threshold;
2687 rdev->wiphy.coverage_class = old_coverage_class;
2688 rdev->wiphy.txq_limit = old_txq_limit;
2689 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2690 rdev->wiphy.txq_quantum = old_txq_quantum;
2691 return result;
2692 }
2693 }
2694 return 0;
2695 }
2696
2697 static inline u64 wdev_id(struct wireless_dev *wdev)
2698 {
2699 return (u64)wdev->identifier |
2700 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2701 }
2702
2703 static int nl80211_send_chandef(struct sk_buff *msg,
2704 const struct cfg80211_chan_def *chandef)
2705 {
2706 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2707 return -EINVAL;
2708
2709 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2710 chandef->chan->center_freq))
2711 return -ENOBUFS;
2712 switch (chandef->width) {
2713 case NL80211_CHAN_WIDTH_20_NOHT:
2714 case NL80211_CHAN_WIDTH_20:
2715 case NL80211_CHAN_WIDTH_40:
2716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2717 cfg80211_get_chandef_type(chandef)))
2718 return -ENOBUFS;
2719 break;
2720 default:
2721 break;
2722 }
2723 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2724 return -ENOBUFS;
2725 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2726 return -ENOBUFS;
2727 if (chandef->center_freq2 &&
2728 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2729 return -ENOBUFS;
2730 return 0;
2731 }
2732
2733 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2734 struct cfg80211_registered_device *rdev,
2735 struct wireless_dev *wdev, bool removal)
2736 {
2737 struct net_device *dev = wdev->netdev;
2738 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2739 void *hdr;
2740
2741 if (removal)
2742 cmd = NL80211_CMD_DEL_INTERFACE;
2743
2744 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2745 if (!hdr)
2746 return -1;
2747
2748 if (dev &&
2749 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2750 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2751 goto nla_put_failure;
2752
2753 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2754 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2755 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2756 NL80211_ATTR_PAD) ||
2757 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2758 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2759 rdev->devlist_generation ^
2760 (cfg80211_rdev_list_generation << 2)))
2761 goto nla_put_failure;
2762
2763 if (rdev->ops->get_channel) {
2764 int ret;
2765 struct cfg80211_chan_def chandef;
2766
2767 ret = rdev_get_channel(rdev, wdev, &chandef);
2768 if (ret == 0) {
2769 if (nl80211_send_chandef(msg, &chandef))
2770 goto nla_put_failure;
2771 }
2772 }
2773
2774 if (rdev->ops->get_tx_power) {
2775 int dbm, ret;
2776
2777 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2778 if (ret == 0 &&
2779 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2780 DBM_TO_MBM(dbm)))
2781 goto nla_put_failure;
2782 }
2783
2784 wdev_lock(wdev);
2785 switch (wdev->iftype) {
2786 case NL80211_IFTYPE_AP:
2787 if (wdev->ssid_len &&
2788 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2789 goto nla_put_failure_locked;
2790 break;
2791 case NL80211_IFTYPE_STATION:
2792 case NL80211_IFTYPE_P2P_CLIENT:
2793 case NL80211_IFTYPE_ADHOC: {
2794 const u8 *ssid_ie;
2795 if (!wdev->current_bss)
2796 break;
2797 rcu_read_lock();
2798 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2799 WLAN_EID_SSID);
2800 if (ssid_ie &&
2801 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2802 goto nla_put_failure_rcu_locked;
2803 rcu_read_unlock();
2804 break;
2805 }
2806 default:
2807 /* nothing */
2808 break;
2809 }
2810 wdev_unlock(wdev);
2811
2812 if (rdev->ops->get_txq_stats) {
2813 struct cfg80211_txq_stats txqstats = {};
2814 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2815
2816 if (ret == 0 &&
2817 !nl80211_put_txq_stats(msg, &txqstats,
2818 NL80211_ATTR_TXQ_STATS))
2819 goto nla_put_failure;
2820 }
2821
2822 genlmsg_end(msg, hdr);
2823 return 0;
2824
2825 nla_put_failure_rcu_locked:
2826 rcu_read_unlock();
2827 nla_put_failure_locked:
2828 wdev_unlock(wdev);
2829 nla_put_failure:
2830 genlmsg_cancel(msg, hdr);
2831 return -EMSGSIZE;
2832 }
2833
2834 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2835 {
2836 int wp_idx = 0;
2837 int if_idx = 0;
2838 int wp_start = cb->args[0];
2839 int if_start = cb->args[1];
2840 int filter_wiphy = -1;
2841 struct cfg80211_registered_device *rdev;
2842 struct wireless_dev *wdev;
2843 int ret;
2844
2845 rtnl_lock();
2846 if (!cb->args[2]) {
2847 struct nl80211_dump_wiphy_state state = {
2848 .filter_wiphy = -1,
2849 };
2850
2851 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2852 if (ret)
2853 goto out_unlock;
2854
2855 filter_wiphy = state.filter_wiphy;
2856
2857 /*
2858 * if filtering, set cb->args[2] to +1 since 0 is the default
2859 * value needed to determine that parsing is necessary.
2860 */
2861 if (filter_wiphy >= 0)
2862 cb->args[2] = filter_wiphy + 1;
2863 else
2864 cb->args[2] = -1;
2865 } else if (cb->args[2] > 0) {
2866 filter_wiphy = cb->args[2] - 1;
2867 }
2868
2869 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2870 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2871 continue;
2872 if (wp_idx < wp_start) {
2873 wp_idx++;
2874 continue;
2875 }
2876
2877 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2878 continue;
2879
2880 if_idx = 0;
2881
2882 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2883 if (if_idx < if_start) {
2884 if_idx++;
2885 continue;
2886 }
2887 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2888 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2889 rdev, wdev, false) < 0) {
2890 goto out;
2891 }
2892 if_idx++;
2893 }
2894
2895 wp_idx++;
2896 }
2897 out:
2898 cb->args[0] = wp_idx;
2899 cb->args[1] = if_idx;
2900
2901 ret = skb->len;
2902 out_unlock:
2903 rtnl_unlock();
2904
2905 return ret;
2906 }
2907
2908 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2909 {
2910 struct sk_buff *msg;
2911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912 struct wireless_dev *wdev = info->user_ptr[1];
2913
2914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2915 if (!msg)
2916 return -ENOMEM;
2917
2918 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2919 rdev, wdev, false) < 0) {
2920 nlmsg_free(msg);
2921 return -ENOBUFS;
2922 }
2923
2924 return genlmsg_reply(msg, info);
2925 }
2926
2927 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2928 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2929 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2930 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2931 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2932 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2933 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2934 };
2935
2936 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2937 {
2938 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2939 int flag;
2940
2941 *mntrflags = 0;
2942
2943 if (!nla)
2944 return -EINVAL;
2945
2946 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2947 mntr_flags_policy, NULL))
2948 return -EINVAL;
2949
2950 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2951 if (flags[flag])
2952 *mntrflags |= (1<<flag);
2953
2954 *mntrflags |= MONITOR_FLAG_CHANGED;
2955
2956 return 0;
2957 }
2958
2959 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2960 enum nl80211_iftype type,
2961 struct genl_info *info,
2962 struct vif_params *params)
2963 {
2964 bool change = false;
2965 int err;
2966
2967 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2968 if (type != NL80211_IFTYPE_MONITOR)
2969 return -EINVAL;
2970
2971 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2972 &params->flags);
2973 if (err)
2974 return err;
2975
2976 change = true;
2977 }
2978
2979 if (params->flags & MONITOR_FLAG_ACTIVE &&
2980 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2981 return -EOPNOTSUPP;
2982
2983 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2984 const u8 *mumimo_groups;
2985 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2986
2987 if (type != NL80211_IFTYPE_MONITOR)
2988 return -EINVAL;
2989
2990 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2991 return -EOPNOTSUPP;
2992
2993 mumimo_groups =
2994 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2995
2996 /* bits 0 and 63 are reserved and must be zero */
2997 if ((mumimo_groups[0] & BIT(0)) ||
2998 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2999 return -EINVAL;
3000
3001 params->vht_mumimo_groups = mumimo_groups;
3002 change = true;
3003 }
3004
3005 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3006 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3007
3008 if (type != NL80211_IFTYPE_MONITOR)
3009 return -EINVAL;
3010
3011 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3012 return -EOPNOTSUPP;
3013
3014 params->vht_mumimo_follow_addr =
3015 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3016 change = true;
3017 }
3018
3019 return change ? 1 : 0;
3020 }
3021
3022 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3023 struct net_device *netdev, u8 use_4addr,
3024 enum nl80211_iftype iftype)
3025 {
3026 if (!use_4addr) {
3027 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3028 return -EBUSY;
3029 return 0;
3030 }
3031
3032 switch (iftype) {
3033 case NL80211_IFTYPE_AP_VLAN:
3034 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3035 return 0;
3036 break;
3037 case NL80211_IFTYPE_STATION:
3038 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3039 return 0;
3040 break;
3041 default:
3042 break;
3043 }
3044
3045 return -EOPNOTSUPP;
3046 }
3047
3048 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3049 {
3050 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051 struct vif_params params;
3052 int err;
3053 enum nl80211_iftype otype, ntype;
3054 struct net_device *dev = info->user_ptr[1];
3055 bool change = false;
3056
3057 memset(&params, 0, sizeof(params));
3058
3059 otype = ntype = dev->ieee80211_ptr->iftype;
3060
3061 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3062 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3063 if (otype != ntype)
3064 change = true;
3065 if (ntype > NL80211_IFTYPE_MAX)
3066 return -EINVAL;
3067 }
3068
3069 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3070 struct wireless_dev *wdev = dev->ieee80211_ptr;
3071
3072 if (ntype != NL80211_IFTYPE_MESH_POINT)
3073 return -EINVAL;
3074 if (netif_running(dev))
3075 return -EBUSY;
3076
3077 wdev_lock(wdev);
3078 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3079 IEEE80211_MAX_MESH_ID_LEN);
3080 wdev->mesh_id_up_len =
3081 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3082 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3083 wdev->mesh_id_up_len);
3084 wdev_unlock(wdev);
3085 }
3086
3087 if (info->attrs[NL80211_ATTR_4ADDR]) {
3088 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3089 change = true;
3090 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3091 if (err)
3092 return err;
3093 } else {
3094 params.use_4addr = -1;
3095 }
3096
3097 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3098 if (err < 0)
3099 return err;
3100 if (err > 0)
3101 change = true;
3102
3103 if (change)
3104 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3105 else
3106 err = 0;
3107
3108 if (!err && params.use_4addr != -1)
3109 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3110
3111 return err;
3112 }
3113
3114 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3115 {
3116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3117 struct vif_params params;
3118 struct wireless_dev *wdev;
3119 struct sk_buff *msg;
3120 int err;
3121 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3122
3123 /* to avoid failing a new interface creation due to pending removal */
3124 cfg80211_destroy_ifaces(rdev);
3125
3126 memset(&params, 0, sizeof(params));
3127
3128 if (!info->attrs[NL80211_ATTR_IFNAME])
3129 return -EINVAL;
3130
3131 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3132 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3133 if (type > NL80211_IFTYPE_MAX)
3134 return -EINVAL;
3135 }
3136
3137 if (!rdev->ops->add_virtual_intf ||
3138 !(rdev->wiphy.interface_modes & (1 << type)))
3139 return -EOPNOTSUPP;
3140
3141 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3142 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3143 info->attrs[NL80211_ATTR_MAC]) {
3144 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3145 ETH_ALEN);
3146 if (!is_valid_ether_addr(params.macaddr))
3147 return -EADDRNOTAVAIL;
3148 }
3149
3150 if (info->attrs[NL80211_ATTR_4ADDR]) {
3151 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3152 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3153 if (err)
3154 return err;
3155 }
3156
3157 err = nl80211_parse_mon_options(rdev, type, info, &params);
3158 if (err < 0)
3159 return err;
3160
3161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162 if (!msg)
3163 return -ENOMEM;
3164
3165 wdev = rdev_add_virtual_intf(rdev,
3166 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3167 NET_NAME_USER, type, &params);
3168 if (WARN_ON(!wdev)) {
3169 nlmsg_free(msg);
3170 return -EPROTO;
3171 } else if (IS_ERR(wdev)) {
3172 nlmsg_free(msg);
3173 return PTR_ERR(wdev);
3174 }
3175
3176 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3177 wdev->owner_nlportid = info->snd_portid;
3178
3179 switch (type) {
3180 case NL80211_IFTYPE_MESH_POINT:
3181 if (!info->attrs[NL80211_ATTR_MESH_ID])
3182 break;
3183 wdev_lock(wdev);
3184 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3185 IEEE80211_MAX_MESH_ID_LEN);
3186 wdev->mesh_id_up_len =
3187 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3188 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3189 wdev->mesh_id_up_len);
3190 wdev_unlock(wdev);
3191 break;
3192 case NL80211_IFTYPE_NAN:
3193 case NL80211_IFTYPE_P2P_DEVICE:
3194 /*
3195 * P2P Device and NAN do not have a netdev, so don't go
3196 * through the netdev notifier and must be added here
3197 */
3198 mutex_init(&wdev->mtx);
3199 INIT_LIST_HEAD(&wdev->event_list);
3200 spin_lock_init(&wdev->event_lock);
3201 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3202 spin_lock_init(&wdev->mgmt_registrations_lock);
3203
3204 wdev->identifier = ++rdev->wdev_id;
3205 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3206 rdev->devlist_generation++;
3207 break;
3208 default:
3209 break;
3210 }
3211
3212 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3213 rdev, wdev, false) < 0) {
3214 nlmsg_free(msg);
3215 return -ENOBUFS;
3216 }
3217
3218 /*
3219 * For wdevs which have no associated netdev object (e.g. of type
3220 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3221 * For all other types, the event will be generated from the
3222 * netdev notifier
3223 */
3224 if (!wdev->netdev)
3225 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3226
3227 return genlmsg_reply(msg, info);
3228 }
3229
3230 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3233 struct wireless_dev *wdev = info->user_ptr[1];
3234
3235 if (!rdev->ops->del_virtual_intf)
3236 return -EOPNOTSUPP;
3237
3238 /*
3239 * If we remove a wireless device without a netdev then clear
3240 * user_ptr[1] so that nl80211_post_doit won't dereference it
3241 * to check if it needs to do dev_put(). Otherwise it crashes
3242 * since the wdev has been freed, unlike with a netdev where
3243 * we need the dev_put() for the netdev to really be freed.
3244 */
3245 if (!wdev->netdev)
3246 info->user_ptr[1] = NULL;
3247
3248 return rdev_del_virtual_intf(rdev, wdev);
3249 }
3250
3251 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3252 {
3253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254 struct net_device *dev = info->user_ptr[1];
3255 u16 noack_map;
3256
3257 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3258 return -EINVAL;
3259
3260 if (!rdev->ops->set_noack_map)
3261 return -EOPNOTSUPP;
3262
3263 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3264
3265 return rdev_set_noack_map(rdev, dev, noack_map);
3266 }
3267
3268 struct get_key_cookie {
3269 struct sk_buff *msg;
3270 int error;
3271 int idx;
3272 };
3273
3274 static void get_key_callback(void *c, struct key_params *params)
3275 {
3276 struct nlattr *key;
3277 struct get_key_cookie *cookie = c;
3278
3279 if ((params->key &&
3280 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3281 params->key_len, params->key)) ||
3282 (params->seq &&
3283 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3284 params->seq_len, params->seq)) ||
3285 (params->cipher &&
3286 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3287 params->cipher)))
3288 goto nla_put_failure;
3289
3290 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3291 if (!key)
3292 goto nla_put_failure;
3293
3294 if ((params->key &&
3295 nla_put(cookie->msg, NL80211_KEY_DATA,
3296 params->key_len, params->key)) ||
3297 (params->seq &&
3298 nla_put(cookie->msg, NL80211_KEY_SEQ,
3299 params->seq_len, params->seq)) ||
3300 (params->cipher &&
3301 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3302 params->cipher)))
3303 goto nla_put_failure;
3304
3305 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3306 goto nla_put_failure;
3307
3308 nla_nest_end(cookie->msg, key);
3309
3310 return;
3311 nla_put_failure:
3312 cookie->error = 1;
3313 }
3314
3315 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3316 {
3317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318 int err;
3319 struct net_device *dev = info->user_ptr[1];
3320 u8 key_idx = 0;
3321 const u8 *mac_addr = NULL;
3322 bool pairwise;
3323 struct get_key_cookie cookie = {
3324 .error = 0,
3325 };
3326 void *hdr;
3327 struct sk_buff *msg;
3328
3329 if (info->attrs[NL80211_ATTR_KEY_IDX])
3330 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3331
3332 if (key_idx > 5)
3333 return -EINVAL;
3334
3335 if (info->attrs[NL80211_ATTR_MAC])
3336 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3337
3338 pairwise = !!mac_addr;
3339 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3340 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3341
3342 if (kt >= NUM_NL80211_KEYTYPES)
3343 return -EINVAL;
3344 if (kt != NL80211_KEYTYPE_GROUP &&
3345 kt != NL80211_KEYTYPE_PAIRWISE)
3346 return -EINVAL;
3347 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3348 }
3349
3350 if (!rdev->ops->get_key)
3351 return -EOPNOTSUPP;
3352
3353 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3354 return -ENOENT;
3355
3356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3357 if (!msg)
3358 return -ENOMEM;
3359
3360 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3361 NL80211_CMD_NEW_KEY);
3362 if (!hdr)
3363 goto nla_put_failure;
3364
3365 cookie.msg = msg;
3366 cookie.idx = key_idx;
3367
3368 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3369 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3370 goto nla_put_failure;
3371 if (mac_addr &&
3372 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3373 goto nla_put_failure;
3374
3375 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3376 get_key_callback);
3377
3378 if (err)
3379 goto free_msg;
3380
3381 if (cookie.error)
3382 goto nla_put_failure;
3383
3384 genlmsg_end(msg, hdr);
3385 return genlmsg_reply(msg, info);
3386
3387 nla_put_failure:
3388 err = -ENOBUFS;
3389 free_msg:
3390 nlmsg_free(msg);
3391 return err;
3392 }
3393
3394 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3395 {
3396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397 struct key_parse key;
3398 int err;
3399 struct net_device *dev = info->user_ptr[1];
3400
3401 err = nl80211_parse_key(info, &key);
3402 if (err)
3403 return err;
3404
3405 if (key.idx < 0)
3406 return -EINVAL;
3407
3408 /* only support setting default key */
3409 if (!key.def && !key.defmgmt)
3410 return -EINVAL;
3411
3412 wdev_lock(dev->ieee80211_ptr);
3413
3414 if (key.def) {
3415 if (!rdev->ops->set_default_key) {
3416 err = -EOPNOTSUPP;
3417 goto out;
3418 }
3419
3420 err = nl80211_key_allowed(dev->ieee80211_ptr);
3421 if (err)
3422 goto out;
3423
3424 err = rdev_set_default_key(rdev, dev, key.idx,
3425 key.def_uni, key.def_multi);
3426
3427 if (err)
3428 goto out;
3429
3430 #ifdef CONFIG_CFG80211_WEXT
3431 dev->ieee80211_ptr->wext.default_key = key.idx;
3432 #endif
3433 } else {
3434 if (key.def_uni || !key.def_multi) {
3435 err = -EINVAL;
3436 goto out;
3437 }
3438
3439 if (!rdev->ops->set_default_mgmt_key) {
3440 err = -EOPNOTSUPP;
3441 goto out;
3442 }
3443
3444 err = nl80211_key_allowed(dev->ieee80211_ptr);
3445 if (err)
3446 goto out;
3447
3448 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3449 if (err)
3450 goto out;
3451
3452 #ifdef CONFIG_CFG80211_WEXT
3453 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3454 #endif
3455 }
3456
3457 out:
3458 wdev_unlock(dev->ieee80211_ptr);
3459
3460 return err;
3461 }
3462
3463 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3464 {
3465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466 int err;
3467 struct net_device *dev = info->user_ptr[1];
3468 struct key_parse key;
3469 const u8 *mac_addr = NULL;
3470
3471 err = nl80211_parse_key(info, &key);
3472 if (err)
3473 return err;
3474
3475 if (!key.p.key)
3476 return -EINVAL;
3477
3478 if (info->attrs[NL80211_ATTR_MAC])
3479 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3480
3481 if (key.type == -1) {
3482 if (mac_addr)
3483 key.type = NL80211_KEYTYPE_PAIRWISE;
3484 else
3485 key.type = NL80211_KEYTYPE_GROUP;
3486 }
3487
3488 /* for now */
3489 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3490 key.type != NL80211_KEYTYPE_GROUP)
3491 return -EINVAL;
3492
3493 if (!rdev->ops->add_key)
3494 return -EOPNOTSUPP;
3495
3496 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3497 key.type == NL80211_KEYTYPE_PAIRWISE,
3498 mac_addr))
3499 return -EINVAL;
3500
3501 wdev_lock(dev->ieee80211_ptr);
3502 err = nl80211_key_allowed(dev->ieee80211_ptr);
3503 if (!err)
3504 err = rdev_add_key(rdev, dev, key.idx,
3505 key.type == NL80211_KEYTYPE_PAIRWISE,
3506 mac_addr, &key.p);
3507 wdev_unlock(dev->ieee80211_ptr);
3508
3509 return err;
3510 }
3511
3512 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3513 {
3514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3515 int err;
3516 struct net_device *dev = info->user_ptr[1];
3517 u8 *mac_addr = NULL;
3518 struct key_parse key;
3519
3520 err = nl80211_parse_key(info, &key);
3521 if (err)
3522 return err;
3523
3524 if (info->attrs[NL80211_ATTR_MAC])
3525 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3526
3527 if (key.type == -1) {
3528 if (mac_addr)
3529 key.type = NL80211_KEYTYPE_PAIRWISE;
3530 else
3531 key.type = NL80211_KEYTYPE_GROUP;
3532 }
3533
3534 /* for now */
3535 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3536 key.type != NL80211_KEYTYPE_GROUP)
3537 return -EINVAL;
3538
3539 if (!rdev->ops->del_key)
3540 return -EOPNOTSUPP;
3541
3542 wdev_lock(dev->ieee80211_ptr);
3543 err = nl80211_key_allowed(dev->ieee80211_ptr);
3544
3545 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3546 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3547 err = -ENOENT;
3548
3549 if (!err)
3550 err = rdev_del_key(rdev, dev, key.idx,
3551 key.type == NL80211_KEYTYPE_PAIRWISE,
3552 mac_addr);
3553
3554 #ifdef CONFIG_CFG80211_WEXT
3555 if (!err) {
3556 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3557 dev->ieee80211_ptr->wext.default_key = -1;
3558 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3559 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3560 }
3561 #endif
3562 wdev_unlock(dev->ieee80211_ptr);
3563
3564 return err;
3565 }
3566
3567 /* This function returns an error or the number of nested attributes */
3568 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3569 {
3570 struct nlattr *attr;
3571 int n_entries = 0, tmp;
3572
3573 nla_for_each_nested(attr, nl_attr, tmp) {
3574 if (nla_len(attr) != ETH_ALEN)
3575 return -EINVAL;
3576
3577 n_entries++;
3578 }
3579
3580 return n_entries;
3581 }
3582
3583 /*
3584 * This function parses ACL information and allocates memory for ACL data.
3585 * On successful return, the calling function is responsible to free the
3586 * ACL buffer returned by this function.
3587 */
3588 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3589 struct genl_info *info)
3590 {
3591 enum nl80211_acl_policy acl_policy;
3592 struct nlattr *attr;
3593 struct cfg80211_acl_data *acl;
3594 int i = 0, n_entries, tmp;
3595
3596 if (!wiphy->max_acl_mac_addrs)
3597 return ERR_PTR(-EOPNOTSUPP);
3598
3599 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3600 return ERR_PTR(-EINVAL);
3601
3602 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3603 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3604 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3605 return ERR_PTR(-EINVAL);
3606
3607 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3608 return ERR_PTR(-EINVAL);
3609
3610 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3611 if (n_entries < 0)
3612 return ERR_PTR(n_entries);
3613
3614 if (n_entries > wiphy->max_acl_mac_addrs)
3615 return ERR_PTR(-ENOTSUPP);
3616
3617 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3618 GFP_KERNEL);
3619 if (!acl)
3620 return ERR_PTR(-ENOMEM);
3621
3622 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3623 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3624 i++;
3625 }
3626
3627 acl->n_acl_entries = n_entries;
3628 acl->acl_policy = acl_policy;
3629
3630 return acl;
3631 }
3632
3633 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3634 {
3635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636 struct net_device *dev = info->user_ptr[1];
3637 struct cfg80211_acl_data *acl;
3638 int err;
3639
3640 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3641 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3642 return -EOPNOTSUPP;
3643
3644 if (!dev->ieee80211_ptr->beacon_interval)
3645 return -EINVAL;
3646
3647 acl = parse_acl_data(&rdev->wiphy, info);
3648 if (IS_ERR(acl))
3649 return PTR_ERR(acl);
3650
3651 err = rdev_set_mac_acl(rdev, dev, acl);
3652
3653 kfree(acl);
3654
3655 return err;
3656 }
3657
3658 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3659 u8 *rates, u8 rates_len)
3660 {
3661 u8 i;
3662 u32 mask = 0;
3663
3664 for (i = 0; i < rates_len; i++) {
3665 int rate = (rates[i] & 0x7f) * 5;
3666 int ridx;
3667
3668 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3669 struct ieee80211_rate *srate =
3670 &sband->bitrates[ridx];
3671 if (rate == srate->bitrate) {
3672 mask |= 1 << ridx;
3673 break;
3674 }
3675 }
3676 if (ridx == sband->n_bitrates)
3677 return 0; /* rate not found */
3678 }
3679
3680 return mask;
3681 }
3682
3683 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3684 u8 *rates, u8 rates_len,
3685 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3686 {
3687 u8 i;
3688
3689 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3690
3691 for (i = 0; i < rates_len; i++) {
3692 int ridx, rbit;
3693
3694 ridx = rates[i] / 8;
3695 rbit = BIT(rates[i] % 8);
3696
3697 /* check validity */
3698 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3699 return false;
3700
3701 /* check availability */
3702 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3703 mcs[ridx] |= rbit;
3704 else
3705 return false;
3706 }
3707
3708 return true;
3709 }
3710
3711 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3712 {
3713 u16 mcs_mask = 0;
3714
3715 switch (vht_mcs_map) {
3716 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3717 break;
3718 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3719 mcs_mask = 0x00FF;
3720 break;
3721 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3722 mcs_mask = 0x01FF;
3723 break;
3724 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3725 mcs_mask = 0x03FF;
3726 break;
3727 default:
3728 break;
3729 }
3730
3731 return mcs_mask;
3732 }
3733
3734 static void vht_build_mcs_mask(u16 vht_mcs_map,
3735 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3736 {
3737 u8 nss;
3738
3739 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3740 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3741 vht_mcs_map >>= 2;
3742 }
3743 }
3744
3745 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3746 struct nl80211_txrate_vht *txrate,
3747 u16 mcs[NL80211_VHT_NSS_MAX])
3748 {
3749 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3750 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3751 u8 i;
3752
3753 if (!sband->vht_cap.vht_supported)
3754 return false;
3755
3756 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3757
3758 /* Build vht_mcs_mask from VHT capabilities */
3759 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3760
3761 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3762 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3763 mcs[i] = txrate->mcs[i];
3764 else
3765 return false;
3766 }
3767
3768 return true;
3769 }
3770
3771 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3772 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3773 .len = NL80211_MAX_SUPP_RATES },
3774 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3775 .len = NL80211_MAX_SUPP_HT_RATES },
3776 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3777 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3778 };
3779
3780 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3781 struct cfg80211_bitrate_mask *mask)
3782 {
3783 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785 int rem, i;
3786 struct nlattr *tx_rates;
3787 struct ieee80211_supported_band *sband;
3788 u16 vht_tx_mcs_map;
3789
3790 memset(mask, 0, sizeof(*mask));
3791 /* Default to all rates enabled */
3792 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3793 sband = rdev->wiphy.bands[i];
3794
3795 if (!sband)
3796 continue;
3797
3798 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3799 memcpy(mask->control[i].ht_mcs,
3800 sband->ht_cap.mcs.rx_mask,
3801 sizeof(mask->control[i].ht_mcs));
3802
3803 if (!sband->vht_cap.vht_supported)
3804 continue;
3805
3806 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3807 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3808 }
3809
3810 /* if no rates are given set it back to the defaults */
3811 if (!info->attrs[NL80211_ATTR_TX_RATES])
3812 goto out;
3813
3814 /* The nested attribute uses enum nl80211_band as the index. This maps
3815 * directly to the enum nl80211_band values used in cfg80211.
3816 */
3817 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3818 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3819 enum nl80211_band band = nla_type(tx_rates);
3820 int err;
3821
3822 if (band < 0 || band >= NUM_NL80211_BANDS)
3823 return -EINVAL;
3824 sband = rdev->wiphy.bands[band];
3825 if (sband == NULL)
3826 return -EINVAL;
3827 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3828 nl80211_txattr_policy, info->extack);
3829 if (err)
3830 return err;
3831 if (tb[NL80211_TXRATE_LEGACY]) {
3832 mask->control[band].legacy = rateset_to_mask(
3833 sband,
3834 nla_data(tb[NL80211_TXRATE_LEGACY]),
3835 nla_len(tb[NL80211_TXRATE_LEGACY]));
3836 if ((mask->control[band].legacy == 0) &&
3837 nla_len(tb[NL80211_TXRATE_LEGACY]))
3838 return -EINVAL;
3839 }
3840 if (tb[NL80211_TXRATE_HT]) {
3841 if (!ht_rateset_to_mask(
3842 sband,
3843 nla_data(tb[NL80211_TXRATE_HT]),
3844 nla_len(tb[NL80211_TXRATE_HT]),
3845 mask->control[band].ht_mcs))
3846 return -EINVAL;
3847 }
3848 if (tb[NL80211_TXRATE_VHT]) {
3849 if (!vht_set_mcs_mask(
3850 sband,
3851 nla_data(tb[NL80211_TXRATE_VHT]),
3852 mask->control[band].vht_mcs))
3853 return -EINVAL;
3854 }
3855 if (tb[NL80211_TXRATE_GI]) {
3856 mask->control[band].gi =
3857 nla_get_u8(tb[NL80211_TXRATE_GI]);
3858 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3859 return -EINVAL;
3860 }
3861
3862 if (mask->control[band].legacy == 0) {
3863 /* don't allow empty legacy rates if HT or VHT
3864 * are not even supported.
3865 */
3866 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3867 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3868 return -EINVAL;
3869
3870 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3871 if (mask->control[band].ht_mcs[i])
3872 goto out;
3873
3874 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3875 if (mask->control[band].vht_mcs[i])
3876 goto out;
3877
3878 /* legacy and mcs rates may not be both empty */
3879 return -EINVAL;
3880 }
3881 }
3882
3883 out:
3884 return 0;
3885 }
3886
3887 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3888 enum nl80211_band band,
3889 struct cfg80211_bitrate_mask *beacon_rate)
3890 {
3891 u32 count_ht, count_vht, i;
3892 u32 rate = beacon_rate->control[band].legacy;
3893
3894 /* Allow only one rate */
3895 if (hweight32(rate) > 1)
3896 return -EINVAL;
3897
3898 count_ht = 0;
3899 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3900 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3901 return -EINVAL;
3902 } else if (beacon_rate->control[band].ht_mcs[i]) {
3903 count_ht++;
3904 if (count_ht > 1)
3905 return -EINVAL;
3906 }
3907 if (count_ht && rate)
3908 return -EINVAL;
3909 }
3910
3911 count_vht = 0;
3912 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3913 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3914 return -EINVAL;
3915 } else if (beacon_rate->control[band].vht_mcs[i]) {
3916 count_vht++;
3917 if (count_vht > 1)
3918 return -EINVAL;
3919 }
3920 if (count_vht && rate)
3921 return -EINVAL;
3922 }
3923
3924 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3925 return -EINVAL;
3926
3927 if (rate &&
3928 !wiphy_ext_feature_isset(&rdev->wiphy,
3929 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3930 return -EINVAL;
3931 if (count_ht &&
3932 !wiphy_ext_feature_isset(&rdev->wiphy,
3933 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3934 return -EINVAL;
3935 if (count_vht &&
3936 !wiphy_ext_feature_isset(&rdev->wiphy,
3937 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3938 return -EINVAL;
3939
3940 return 0;
3941 }
3942
3943 static int nl80211_parse_beacon(struct nlattr *attrs[],
3944 struct cfg80211_beacon_data *bcn)
3945 {
3946 bool haveinfo = false;
3947
3948 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3949 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3950 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3951 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3952 return -EINVAL;
3953
3954 memset(bcn, 0, sizeof(*bcn));
3955
3956 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3957 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3958 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3959 if (!bcn->head_len)
3960 return -EINVAL;
3961 haveinfo = true;
3962 }
3963
3964 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3965 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3966 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3967 haveinfo = true;
3968 }
3969
3970 if (!haveinfo)
3971 return -EINVAL;
3972
3973 if (attrs[NL80211_ATTR_IE]) {
3974 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3975 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3976 }
3977
3978 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3979 bcn->proberesp_ies =
3980 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3981 bcn->proberesp_ies_len =
3982 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3983 }
3984
3985 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3986 bcn->assocresp_ies =
3987 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3988 bcn->assocresp_ies_len =
3989 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3990 }
3991
3992 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3993 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3994 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3995 }
3996
3997 return 0;
3998 }
3999
4000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4001 const u8 *rates)
4002 {
4003 int i;
4004
4005 if (!rates)
4006 return;
4007
4008 for (i = 0; i < rates[1]; i++) {
4009 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4010 params->ht_required = true;
4011 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4012 params->vht_required = true;
4013 }
4014 }
4015
4016 /*
4017 * Since the nl80211 API didn't include, from the beginning, attributes about
4018 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4019 * benefit of drivers that rebuild IEs in the firmware.
4020 */
4021 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4022 {
4023 const struct cfg80211_beacon_data *bcn = &params->beacon;
4024 size_t ies_len = bcn->tail_len;
4025 const u8 *ies = bcn->tail;
4026 const u8 *rates;
4027 const u8 *cap;
4028
4029 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4030 nl80211_check_ap_rate_selectors(params, rates);
4031
4032 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4033 nl80211_check_ap_rate_selectors(params, rates);
4034
4035 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4036 if (cap && cap[1] >= sizeof(*params->ht_cap))
4037 params->ht_cap = (void *)(cap + 2);
4038 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4039 if (cap && cap[1] >= sizeof(*params->vht_cap))
4040 params->vht_cap = (void *)(cap + 2);
4041 }
4042
4043 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4044 struct cfg80211_ap_settings *params)
4045 {
4046 struct wireless_dev *wdev;
4047 bool ret = false;
4048
4049 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4050 if (wdev->iftype != NL80211_IFTYPE_AP &&
4051 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4052 continue;
4053
4054 if (!wdev->preset_chandef.chan)
4055 continue;
4056
4057 params->chandef = wdev->preset_chandef;
4058 ret = true;
4059 break;
4060 }
4061
4062 return ret;
4063 }
4064
4065 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4066 enum nl80211_auth_type auth_type,
4067 enum nl80211_commands cmd)
4068 {
4069 if (auth_type > NL80211_AUTHTYPE_MAX)
4070 return false;
4071
4072 switch (cmd) {
4073 case NL80211_CMD_AUTHENTICATE:
4074 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4075 auth_type == NL80211_AUTHTYPE_SAE)
4076 return false;
4077 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4078 NL80211_EXT_FEATURE_FILS_STA) &&
4079 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4080 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4081 auth_type == NL80211_AUTHTYPE_FILS_PK))
4082 return false;
4083 return true;
4084 case NL80211_CMD_CONNECT:
4085 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4086 auth_type == NL80211_AUTHTYPE_SAE)
4087 return false;
4088
4089 /* FILS with SK PFS or PK not supported yet */
4090 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4091 auth_type == NL80211_AUTHTYPE_FILS_PK)
4092 return false;
4093 if (!wiphy_ext_feature_isset(
4094 &rdev->wiphy,
4095 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4096 auth_type == NL80211_AUTHTYPE_FILS_SK)
4097 return false;
4098 return true;
4099 case NL80211_CMD_START_AP:
4100 /* SAE not supported yet */
4101 if (auth_type == NL80211_AUTHTYPE_SAE)
4102 return false;
4103 /* FILS not supported yet */
4104 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4105 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4106 auth_type == NL80211_AUTHTYPE_FILS_PK)
4107 return false;
4108 return true;
4109 default:
4110 return false;
4111 }
4112 }
4113
4114 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4115 {
4116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117 struct net_device *dev = info->user_ptr[1];
4118 struct wireless_dev *wdev = dev->ieee80211_ptr;
4119 struct cfg80211_ap_settings params;
4120 int err;
4121
4122 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4123 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124 return -EOPNOTSUPP;
4125
4126 if (!rdev->ops->start_ap)
4127 return -EOPNOTSUPP;
4128
4129 if (wdev->beacon_interval)
4130 return -EALREADY;
4131
4132 memset(&params, 0, sizeof(params));
4133
4134 /* these are required for START_AP */
4135 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4136 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4137 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4138 return -EINVAL;
4139
4140 err = nl80211_parse_beacon(info->attrs, &params.beacon);
4141 if (err)
4142 return err;
4143
4144 params.beacon_interval =
4145 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4146 params.dtim_period =
4147 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4148
4149 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4150 params.beacon_interval);
4151 if (err)
4152 return err;
4153
4154 /*
4155 * In theory, some of these attributes should be required here
4156 * but since they were not used when the command was originally
4157 * added, keep them optional for old user space programs to let
4158 * them continue to work with drivers that do not need the
4159 * additional information -- drivers must check!
4160 */
4161 if (info->attrs[NL80211_ATTR_SSID]) {
4162 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4163 params.ssid_len =
4164 nla_len(info->attrs[NL80211_ATTR_SSID]);
4165 if (params.ssid_len == 0 ||
4166 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4167 return -EINVAL;
4168 }
4169
4170 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4171 params.hidden_ssid = nla_get_u32(
4172 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4173 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4174 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4175 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4176 return -EINVAL;
4177 }
4178
4179 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4180
4181 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4182 params.auth_type = nla_get_u32(
4183 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4184 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4185 NL80211_CMD_START_AP))
4186 return -EINVAL;
4187 } else
4188 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4189
4190 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4191 NL80211_MAX_NR_CIPHER_SUITES);
4192 if (err)
4193 return err;
4194
4195 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4196 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4197 return -EOPNOTSUPP;
4198 params.inactivity_timeout = nla_get_u16(
4199 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4200 }
4201
4202 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4203 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4204 return -EINVAL;
4205 params.p2p_ctwindow =
4206 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4207 if (params.p2p_ctwindow > 127)
4208 return -EINVAL;
4209 if (params.p2p_ctwindow != 0 &&
4210 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4211 return -EINVAL;
4212 }
4213
4214 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4215 u8 tmp;
4216
4217 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4218 return -EINVAL;
4219 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4220 if (tmp > 1)
4221 return -EINVAL;
4222 params.p2p_opp_ps = tmp;
4223 if (params.p2p_opp_ps != 0 &&
4224 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4225 return -EINVAL;
4226 }
4227
4228 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4229 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4230 if (err)
4231 return err;
4232 } else if (wdev->preset_chandef.chan) {
4233 params.chandef = wdev->preset_chandef;
4234 } else if (!nl80211_get_ap_channel(rdev, &params))
4235 return -EINVAL;
4236
4237 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4238 wdev->iftype))
4239 return -EINVAL;
4240
4241 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4242 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4243 if (err)
4244 return err;
4245
4246 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4247 &params.beacon_rate);
4248 if (err)
4249 return err;
4250 }
4251
4252 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4253 params.smps_mode =
4254 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4255 switch (params.smps_mode) {
4256 case NL80211_SMPS_OFF:
4257 break;
4258 case NL80211_SMPS_STATIC:
4259 if (!(rdev->wiphy.features &
4260 NL80211_FEATURE_STATIC_SMPS))
4261 return -EINVAL;
4262 break;
4263 case NL80211_SMPS_DYNAMIC:
4264 if (!(rdev->wiphy.features &
4265 NL80211_FEATURE_DYNAMIC_SMPS))
4266 return -EINVAL;
4267 break;
4268 default:
4269 return -EINVAL;
4270 }
4271 } else {
4272 params.smps_mode = NL80211_SMPS_OFF;
4273 }
4274
4275 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4276 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4277 return -EOPNOTSUPP;
4278
4279 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4280 params.acl = parse_acl_data(&rdev->wiphy, info);
4281 if (IS_ERR(params.acl))
4282 return PTR_ERR(params.acl);
4283 }
4284
4285 nl80211_calculate_ap_params(&params);
4286
4287 wdev_lock(wdev);
4288 err = rdev_start_ap(rdev, dev, &params);
4289 if (!err) {
4290 wdev->preset_chandef = params.chandef;
4291 wdev->beacon_interval = params.beacon_interval;
4292 wdev->chandef = params.chandef;
4293 wdev->ssid_len = params.ssid_len;
4294 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4295
4296 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297 wdev->conn_owner_nlportid = info->snd_portid;
4298 }
4299 wdev_unlock(wdev);
4300
4301 kfree(params.acl);
4302
4303 return err;
4304 }
4305
4306 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4307 {
4308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309 struct net_device *dev = info->user_ptr[1];
4310 struct wireless_dev *wdev = dev->ieee80211_ptr;
4311 struct cfg80211_beacon_data params;
4312 int err;
4313
4314 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4316 return -EOPNOTSUPP;
4317
4318 if (!rdev->ops->change_beacon)
4319 return -EOPNOTSUPP;
4320
4321 if (!wdev->beacon_interval)
4322 return -EINVAL;
4323
4324 err = nl80211_parse_beacon(info->attrs, &params);
4325 if (err)
4326 return err;
4327
4328 wdev_lock(wdev);
4329 err = rdev_change_beacon(rdev, dev, &params);
4330 wdev_unlock(wdev);
4331
4332 return err;
4333 }
4334
4335 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4336 {
4337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338 struct net_device *dev = info->user_ptr[1];
4339
4340 return cfg80211_stop_ap(rdev, dev, false);
4341 }
4342
4343 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4344 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4345 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4346 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4347 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4348 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4349 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4350 };
4351
4352 static int parse_station_flags(struct genl_info *info,
4353 enum nl80211_iftype iftype,
4354 struct station_parameters *params)
4355 {
4356 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4357 struct nlattr *nla;
4358 int flag;
4359
4360 /*
4361 * Try parsing the new attribute first so userspace
4362 * can specify both for older kernels.
4363 */
4364 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4365 if (nla) {
4366 struct nl80211_sta_flag_update *sta_flags;
4367
4368 sta_flags = nla_data(nla);
4369 params->sta_flags_mask = sta_flags->mask;
4370 params->sta_flags_set = sta_flags->set;
4371 params->sta_flags_set &= params->sta_flags_mask;
4372 if ((params->sta_flags_mask |
4373 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4374 return -EINVAL;
4375 return 0;
4376 }
4377
4378 /* if present, parse the old attribute */
4379
4380 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4381 if (!nla)
4382 return 0;
4383
4384 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4385 sta_flags_policy, info->extack))
4386 return -EINVAL;
4387
4388 /*
4389 * Only allow certain flags for interface types so that
4390 * other attributes are silently ignored. Remember that
4391 * this is backward compatibility code with old userspace
4392 * and shouldn't be hit in other cases anyway.
4393 */
4394 switch (iftype) {
4395 case NL80211_IFTYPE_AP:
4396 case NL80211_IFTYPE_AP_VLAN:
4397 case NL80211_IFTYPE_P2P_GO:
4398 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4399 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4400 BIT(NL80211_STA_FLAG_WME) |
4401 BIT(NL80211_STA_FLAG_MFP);
4402 break;
4403 case NL80211_IFTYPE_P2P_CLIENT:
4404 case NL80211_IFTYPE_STATION:
4405 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4406 BIT(NL80211_STA_FLAG_TDLS_PEER);
4407 break;
4408 case NL80211_IFTYPE_MESH_POINT:
4409 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4410 BIT(NL80211_STA_FLAG_MFP) |
4411 BIT(NL80211_STA_FLAG_AUTHORIZED);
4412 default:
4413 return -EINVAL;
4414 }
4415
4416 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4417 if (flags[flag]) {
4418 params->sta_flags_set |= (1<<flag);
4419
4420 /* no longer support new API additions in old API */
4421 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4422 return -EINVAL;
4423 }
4424 }
4425
4426 return 0;
4427 }
4428
4429 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4430 int attr)
4431 {
4432 struct nlattr *rate;
4433 u32 bitrate;
4434 u16 bitrate_compat;
4435 enum nl80211_rate_info rate_flg;
4436
4437 rate = nla_nest_start(msg, attr);
4438 if (!rate)
4439 return false;
4440
4441 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4442 bitrate = cfg80211_calculate_bitrate(info);
4443 /* report 16-bit bitrate only if we can */
4444 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4445 if (bitrate > 0 &&
4446 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4447 return false;
4448 if (bitrate_compat > 0 &&
4449 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4450 return false;
4451
4452 switch (info->bw) {
4453 case RATE_INFO_BW_5:
4454 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4455 break;
4456 case RATE_INFO_BW_10:
4457 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4458 break;
4459 default:
4460 WARN_ON(1);
4461 /* fall through */
4462 case RATE_INFO_BW_20:
4463 rate_flg = 0;
4464 break;
4465 case RATE_INFO_BW_40:
4466 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4467 break;
4468 case RATE_INFO_BW_80:
4469 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4470 break;
4471 case RATE_INFO_BW_160:
4472 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4473 break;
4474 }
4475
4476 if (rate_flg && nla_put_flag(msg, rate_flg))
4477 return false;
4478
4479 if (info->flags & RATE_INFO_FLAGS_MCS) {
4480 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4481 return false;
4482 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4483 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4484 return false;
4485 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4486 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4487 return false;
4488 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4489 return false;
4490 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4491 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4492 return false;
4493 }
4494
4495 nla_nest_end(msg, rate);
4496 return true;
4497 }
4498
4499 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4500 int id)
4501 {
4502 void *attr;
4503 int i = 0;
4504
4505 if (!mask)
4506 return true;
4507
4508 attr = nla_nest_start(msg, id);
4509 if (!attr)
4510 return false;
4511
4512 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4513 if (!(mask & BIT(i)))
4514 continue;
4515
4516 if (nla_put_u8(msg, i, signal[i]))
4517 return false;
4518 }
4519
4520 nla_nest_end(msg, attr);
4521
4522 return true;
4523 }
4524
4525 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4526 u32 seq, int flags,
4527 struct cfg80211_registered_device *rdev,
4528 struct net_device *dev,
4529 const u8 *mac_addr, struct station_info *sinfo)
4530 {
4531 void *hdr;
4532 struct nlattr *sinfoattr, *bss_param;
4533
4534 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4535 if (!hdr)
4536 return -1;
4537
4538 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4539 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4540 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4541 goto nla_put_failure;
4542
4543 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4544 if (!sinfoattr)
4545 goto nla_put_failure;
4546
4547 #define PUT_SINFO(attr, memb, type) do { \
4548 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4549 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4550 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4551 sinfo->memb)) \
4552 goto nla_put_failure; \
4553 } while (0)
4554 #define PUT_SINFO_U64(attr, memb) do { \
4555 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4556 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4557 sinfo->memb, NL80211_STA_INFO_PAD)) \
4558 goto nla_put_failure; \
4559 } while (0)
4560
4561 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4562 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4563
4564 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4565 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4566 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4567 (u32)sinfo->rx_bytes))
4568 goto nla_put_failure;
4569
4570 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4571 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4572 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4573 (u32)sinfo->tx_bytes))
4574 goto nla_put_failure;
4575
4576 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4577 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4578 PUT_SINFO(LLID, llid, u16);
4579 PUT_SINFO(PLID, plid, u16);
4580 PUT_SINFO(PLINK_STATE, plink_state, u8);
4581 PUT_SINFO_U64(RX_DURATION, rx_duration);
4582
4583 switch (rdev->wiphy.signal_type) {
4584 case CFG80211_SIGNAL_TYPE_MBM:
4585 PUT_SINFO(SIGNAL, signal, u8);
4586 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4587 break;
4588 default:
4589 break;
4590 }
4591 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4592 if (!nl80211_put_signal(msg, sinfo->chains,
4593 sinfo->chain_signal,
4594 NL80211_STA_INFO_CHAIN_SIGNAL))
4595 goto nla_put_failure;
4596 }
4597 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4598 if (!nl80211_put_signal(msg, sinfo->chains,
4599 sinfo->chain_signal_avg,
4600 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4601 goto nla_put_failure;
4602 }
4603 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4604 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4605 NL80211_STA_INFO_TX_BITRATE))
4606 goto nla_put_failure;
4607 }
4608 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4609 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4610 NL80211_STA_INFO_RX_BITRATE))
4611 goto nla_put_failure;
4612 }
4613
4614 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4615 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4616 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4617 PUT_SINFO(TX_FAILED, tx_failed, u32);
4618 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4619 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4620 PUT_SINFO(LOCAL_PM, local_pm, u32);
4621 PUT_SINFO(PEER_PM, peer_pm, u32);
4622 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4623
4624 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4625 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4626 if (!bss_param)
4627 goto nla_put_failure;
4628
4629 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4630 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4631 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4632 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4633 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4634 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4635 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4636 sinfo->bss_param.dtim_period) ||
4637 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4638 sinfo->bss_param.beacon_interval))
4639 goto nla_put_failure;
4640
4641 nla_nest_end(msg, bss_param);
4642 }
4643 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4644 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4645 sizeof(struct nl80211_sta_flag_update),
4646 &sinfo->sta_flags))
4647 goto nla_put_failure;
4648
4649 PUT_SINFO_U64(T_OFFSET, t_offset);
4650 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4651 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4652 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4653 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4654 if (wiphy_ext_feature_isset(&rdev->wiphy,
4655 NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4656 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4657
4658 #undef PUT_SINFO
4659 #undef PUT_SINFO_U64
4660
4661 if (sinfo->pertid) {
4662 struct nlattr *tidsattr;
4663 int tid;
4664
4665 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4666 if (!tidsattr)
4667 goto nla_put_failure;
4668
4669 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4670 struct cfg80211_tid_stats *tidstats;
4671 struct nlattr *tidattr;
4672
4673 tidstats = &sinfo->pertid[tid];
4674
4675 if (!tidstats->filled)
4676 continue;
4677
4678 tidattr = nla_nest_start(msg, tid + 1);
4679 if (!tidattr)
4680 goto nla_put_failure;
4681
4682 #define PUT_TIDVAL_U64(attr, memb) do { \
4683 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4684 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4685 tidstats->memb, NL80211_TID_STATS_PAD)) \
4686 goto nla_put_failure; \
4687 } while (0)
4688
4689 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4690 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4691 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4692 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4693
4694 #undef PUT_TIDVAL_U64
4695 if ((tidstats->filled &
4696 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4697 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4698 NL80211_TID_STATS_TXQ_STATS))
4699 goto nla_put_failure;
4700
4701 nla_nest_end(msg, tidattr);
4702 }
4703
4704 nla_nest_end(msg, tidsattr);
4705 }
4706
4707 nla_nest_end(msg, sinfoattr);
4708
4709 if (sinfo->assoc_req_ies_len &&
4710 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4711 sinfo->assoc_req_ies))
4712 goto nla_put_failure;
4713
4714 cfg80211_sinfo_release_content(sinfo);
4715 genlmsg_end(msg, hdr);
4716 return 0;
4717
4718 nla_put_failure:
4719 cfg80211_sinfo_release_content(sinfo);
4720 genlmsg_cancel(msg, hdr);
4721 return -EMSGSIZE;
4722 }
4723
4724 static int nl80211_dump_station(struct sk_buff *skb,
4725 struct netlink_callback *cb)
4726 {
4727 struct station_info sinfo;
4728 struct cfg80211_registered_device *rdev;
4729 struct wireless_dev *wdev;
4730 u8 mac_addr[ETH_ALEN];
4731 int sta_idx = cb->args[2];
4732 int err;
4733
4734 rtnl_lock();
4735 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4736 if (err)
4737 goto out_err;
4738
4739 if (!wdev->netdev) {
4740 err = -EINVAL;
4741 goto out_err;
4742 }
4743
4744 if (!rdev->ops->dump_station) {
4745 err = -EOPNOTSUPP;
4746 goto out_err;
4747 }
4748
4749 while (1) {
4750 memset(&sinfo, 0, sizeof(sinfo));
4751 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4752 mac_addr, &sinfo);
4753 if (err == -ENOENT)
4754 break;
4755 if (err)
4756 goto out_err;
4757
4758 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4759 NETLINK_CB(cb->skb).portid,
4760 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4761 rdev, wdev->netdev, mac_addr,
4762 &sinfo) < 0)
4763 goto out;
4764
4765 sta_idx++;
4766 }
4767
4768 out:
4769 cb->args[2] = sta_idx;
4770 err = skb->len;
4771 out_err:
4772 rtnl_unlock();
4773
4774 return err;
4775 }
4776
4777 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4778 {
4779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4780 struct net_device *dev = info->user_ptr[1];
4781 struct station_info sinfo;
4782 struct sk_buff *msg;
4783 u8 *mac_addr = NULL;
4784 int err;
4785
4786 memset(&sinfo, 0, sizeof(sinfo));
4787
4788 if (!info->attrs[NL80211_ATTR_MAC])
4789 return -EINVAL;
4790
4791 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4792
4793 if (!rdev->ops->get_station)
4794 return -EOPNOTSUPP;
4795
4796 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4797 if (err)
4798 return err;
4799
4800 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4801 if (!msg) {
4802 cfg80211_sinfo_release_content(&sinfo);
4803 return -ENOMEM;
4804 }
4805
4806 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4807 info->snd_portid, info->snd_seq, 0,
4808 rdev, dev, mac_addr, &sinfo) < 0) {
4809 nlmsg_free(msg);
4810 return -ENOBUFS;
4811 }
4812
4813 return genlmsg_reply(msg, info);
4814 }
4815
4816 int cfg80211_check_station_change(struct wiphy *wiphy,
4817 struct station_parameters *params,
4818 enum cfg80211_station_type statype)
4819 {
4820 if (params->listen_interval != -1 &&
4821 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4822 return -EINVAL;
4823
4824 if (params->support_p2p_ps != -1 &&
4825 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4826 return -EINVAL;
4827
4828 if (params->aid &&
4829 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4830 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4831 return -EINVAL;
4832
4833 /* When you run into this, adjust the code below for the new flag */
4834 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4835
4836 switch (statype) {
4837 case CFG80211_STA_MESH_PEER_KERNEL:
4838 case CFG80211_STA_MESH_PEER_USER:
4839 /*
4840 * No ignoring the TDLS flag here -- the userspace mesh
4841 * code doesn't have the bug of including TDLS in the
4842 * mask everywhere.
4843 */
4844 if (params->sta_flags_mask &
4845 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4846 BIT(NL80211_STA_FLAG_MFP) |
4847 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4848 return -EINVAL;
4849 break;
4850 case CFG80211_STA_TDLS_PEER_SETUP:
4851 case CFG80211_STA_TDLS_PEER_ACTIVE:
4852 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4853 return -EINVAL;
4854 /* ignore since it can't change */
4855 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4856 break;
4857 default:
4858 /* disallow mesh-specific things */
4859 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4860 return -EINVAL;
4861 if (params->local_pm)
4862 return -EINVAL;
4863 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4864 return -EINVAL;
4865 }
4866
4867 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4868 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4869 /* TDLS can't be set, ... */
4870 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4871 return -EINVAL;
4872 /*
4873 * ... but don't bother the driver with it. This works around
4874 * a hostapd/wpa_supplicant issue -- it always includes the
4875 * TLDS_PEER flag in the mask even for AP mode.
4876 */
4877 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4878 }
4879
4880 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4881 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4882 /* reject other things that can't change */
4883 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4884 return -EINVAL;
4885 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4886 return -EINVAL;
4887 if (params->supported_rates)
4888 return -EINVAL;
4889 if (params->ext_capab || params->ht_capa || params->vht_capa)
4890 return -EINVAL;
4891 }
4892
4893 if (statype != CFG80211_STA_AP_CLIENT &&
4894 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4895 if (params->vlan)
4896 return -EINVAL;
4897 }
4898
4899 switch (statype) {
4900 case CFG80211_STA_AP_MLME_CLIENT:
4901 /* Use this only for authorizing/unauthorizing a station */
4902 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4903 return -EOPNOTSUPP;
4904 break;
4905 case CFG80211_STA_AP_CLIENT:
4906 case CFG80211_STA_AP_CLIENT_UNASSOC:
4907 /* accept only the listed bits */
4908 if (params->sta_flags_mask &
4909 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4910 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4911 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4912 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4913 BIT(NL80211_STA_FLAG_WME) |
4914 BIT(NL80211_STA_FLAG_MFP)))
4915 return -EINVAL;
4916
4917 /* but authenticated/associated only if driver handles it */
4918 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4919 params->sta_flags_mask &
4920 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4921 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4922 return -EINVAL;
4923 break;
4924 case CFG80211_STA_IBSS:
4925 case CFG80211_STA_AP_STA:
4926 /* reject any changes other than AUTHORIZED */
4927 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4928 return -EINVAL;
4929 break;
4930 case CFG80211_STA_TDLS_PEER_SETUP:
4931 /* reject any changes other than AUTHORIZED or WME */
4932 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4933 BIT(NL80211_STA_FLAG_WME)))
4934 return -EINVAL;
4935 /* force (at least) rates when authorizing */
4936 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4937 !params->supported_rates)
4938 return -EINVAL;
4939 break;
4940 case CFG80211_STA_TDLS_PEER_ACTIVE:
4941 /* reject any changes */
4942 return -EINVAL;
4943 case CFG80211_STA_MESH_PEER_KERNEL:
4944 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4945 return -EINVAL;
4946 break;
4947 case CFG80211_STA_MESH_PEER_USER:
4948 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4949 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4950 return -EINVAL;
4951 break;
4952 }
4953
4954 /*
4955 * Older kernel versions ignored this attribute entirely, so don't
4956 * reject attempts to update it but mark it as unused instead so the
4957 * driver won't look at the data.
4958 */
4959 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4960 statype != CFG80211_STA_TDLS_PEER_SETUP)
4961 params->opmode_notif_used = false;
4962
4963 return 0;
4964 }
4965 EXPORT_SYMBOL(cfg80211_check_station_change);
4966
4967 /*
4968 * Get vlan interface making sure it is running and on the right wiphy.
4969 */
4970 static struct net_device *get_vlan(struct genl_info *info,
4971 struct cfg80211_registered_device *rdev)
4972 {
4973 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4974 struct net_device *v;
4975 int ret;
4976
4977 if (!vlanattr)
4978 return NULL;
4979
4980 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4981 if (!v)
4982 return ERR_PTR(-ENODEV);
4983
4984 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4985 ret = -EINVAL;
4986 goto error;
4987 }
4988
4989 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4990 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4991 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4992 ret = -EINVAL;
4993 goto error;
4994 }
4995
4996 if (!netif_running(v)) {
4997 ret = -ENETDOWN;
4998 goto error;
4999 }
5000
5001 return v;
5002 error:
5003 dev_put(v);
5004 return ERR_PTR(ret);
5005 }
5006
5007 static const struct nla_policy
5008 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5009 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5010 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5011 };
5012
5013 static int nl80211_parse_sta_wme(struct genl_info *info,
5014 struct station_parameters *params)
5015 {
5016 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5017 struct nlattr *nla;
5018 int err;
5019
5020 /* parse WME attributes if present */
5021 if (!info->attrs[NL80211_ATTR_STA_WME])
5022 return 0;
5023
5024 nla = info->attrs[NL80211_ATTR_STA_WME];
5025 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5026 nl80211_sta_wme_policy, info->extack);
5027 if (err)
5028 return err;
5029
5030 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5031 params->uapsd_queues = nla_get_u8(
5032 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5033 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5034 return -EINVAL;
5035
5036 if (tb[NL80211_STA_WME_MAX_SP])
5037 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5038
5039 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5040 return -EINVAL;
5041
5042 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5043
5044 return 0;
5045 }
5046
5047 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5048 struct station_parameters *params)
5049 {
5050 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5051 params->supported_channels =
5052 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5053 params->supported_channels_len =
5054 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5055 /*
5056 * Need to include at least one (first channel, number of
5057 * channels) tuple for each subband, and must have proper
5058 * tuples for the rest of the data as well.
5059 */
5060 if (params->supported_channels_len < 2)
5061 return -EINVAL;
5062 if (params->supported_channels_len % 2)
5063 return -EINVAL;
5064 }
5065
5066 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5067 params->supported_oper_classes =
5068 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5069 params->supported_oper_classes_len =
5070 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5071 /*
5072 * The value of the Length field of the Supported Operating
5073 * Classes element is between 2 and 253.
5074 */
5075 if (params->supported_oper_classes_len < 2 ||
5076 params->supported_oper_classes_len > 253)
5077 return -EINVAL;
5078 }
5079 return 0;
5080 }
5081
5082 static int nl80211_set_station_tdls(struct genl_info *info,
5083 struct station_parameters *params)
5084 {
5085 int err;
5086 /* Dummy STA entry gets updated once the peer capabilities are known */
5087 if (info->attrs[NL80211_ATTR_PEER_AID])
5088 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5089 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5090 params->ht_capa =
5091 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5092 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5093 params->vht_capa =
5094 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5095
5096 err = nl80211_parse_sta_channel_info(info, params);
5097 if (err)
5098 return err;
5099
5100 return nl80211_parse_sta_wme(info, params);
5101 }
5102
5103 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5104 {
5105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5106 struct net_device *dev = info->user_ptr[1];
5107 struct station_parameters params;
5108 u8 *mac_addr;
5109 int err;
5110
5111 memset(&params, 0, sizeof(params));
5112
5113 if (!rdev->ops->change_station)
5114 return -EOPNOTSUPP;
5115
5116 /*
5117 * AID and listen_interval properties can be set only for unassociated
5118 * station. Include these parameters here and will check them in
5119 * cfg80211_check_station_change().
5120 */
5121 if (info->attrs[NL80211_ATTR_STA_AID])
5122 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5123
5124 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5125 params.listen_interval =
5126 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5127 else
5128 params.listen_interval = -1;
5129
5130 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5131 u8 tmp;
5132
5133 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5134 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5135 return -EINVAL;
5136
5137 params.support_p2p_ps = tmp;
5138 } else {
5139 params.support_p2p_ps = -1;
5140 }
5141
5142 if (!info->attrs[NL80211_ATTR_MAC])
5143 return -EINVAL;
5144
5145 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5146
5147 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5148 params.supported_rates =
5149 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5150 params.supported_rates_len =
5151 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5152 }
5153
5154 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5155 params.capability =
5156 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5157 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5158 }
5159
5160 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5161 params.ext_capab =
5162 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5163 params.ext_capab_len =
5164 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5165 }
5166
5167 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5168 return -EINVAL;
5169
5170 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5171 params.plink_action =
5172 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5173 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5174 return -EINVAL;
5175 }
5176
5177 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5178 params.plink_state =
5179 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5180 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5181 return -EINVAL;
5182 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5183 params.peer_aid = nla_get_u16(
5184 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5185 if (params.peer_aid > IEEE80211_MAX_AID)
5186 return -EINVAL;
5187 }
5188 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5189 }
5190
5191 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5192 enum nl80211_mesh_power_mode pm = nla_get_u32(
5193 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5194
5195 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5196 pm > NL80211_MESH_POWER_MAX)
5197 return -EINVAL;
5198
5199 params.local_pm = pm;
5200 }
5201
5202 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5203 params.opmode_notif_used = true;
5204 params.opmode_notif =
5205 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5206 }
5207
5208 /* Include parameters for TDLS peer (will check later) */
5209 err = nl80211_set_station_tdls(info, &params);
5210 if (err)
5211 return err;
5212
5213 params.vlan = get_vlan(info, rdev);
5214 if (IS_ERR(params.vlan))
5215 return PTR_ERR(params.vlan);
5216
5217 switch (dev->ieee80211_ptr->iftype) {
5218 case NL80211_IFTYPE_AP:
5219 case NL80211_IFTYPE_AP_VLAN:
5220 case NL80211_IFTYPE_P2P_GO:
5221 case NL80211_IFTYPE_P2P_CLIENT:
5222 case NL80211_IFTYPE_STATION:
5223 case NL80211_IFTYPE_ADHOC:
5224 case NL80211_IFTYPE_MESH_POINT:
5225 break;
5226 default:
5227 err = -EOPNOTSUPP;
5228 goto out_put_vlan;
5229 }
5230
5231 /* driver will call cfg80211_check_station_change() */
5232 err = rdev_change_station(rdev, dev, mac_addr, &params);
5233
5234 out_put_vlan:
5235 if (params.vlan)
5236 dev_put(params.vlan);
5237
5238 return err;
5239 }
5240
5241 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5242 {
5243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5244 int err;
5245 struct net_device *dev = info->user_ptr[1];
5246 struct station_parameters params;
5247 u8 *mac_addr = NULL;
5248 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5249 BIT(NL80211_STA_FLAG_ASSOCIATED);
5250
5251 memset(&params, 0, sizeof(params));
5252
5253 if (!rdev->ops->add_station)
5254 return -EOPNOTSUPP;
5255
5256 if (!info->attrs[NL80211_ATTR_MAC])
5257 return -EINVAL;
5258
5259 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5260 return -EINVAL;
5261
5262 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5263 return -EINVAL;
5264
5265 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5266 !info->attrs[NL80211_ATTR_PEER_AID])
5267 return -EINVAL;
5268
5269 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5270 params.supported_rates =
5271 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5272 params.supported_rates_len =
5273 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5274 params.listen_interval =
5275 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5276
5277 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5278 u8 tmp;
5279
5280 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5281 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5282 return -EINVAL;
5283
5284 params.support_p2p_ps = tmp;
5285 } else {
5286 /*
5287 * if not specified, assume it's supported for P2P GO interface,
5288 * and is NOT supported for AP interface
5289 */
5290 params.support_p2p_ps =
5291 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5292 }
5293
5294 if (info->attrs[NL80211_ATTR_PEER_AID])
5295 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5296 else
5297 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5298 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5299 return -EINVAL;
5300
5301 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5302 params.capability =
5303 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5304 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5305 }
5306
5307 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5308 params.ext_capab =
5309 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5310 params.ext_capab_len =
5311 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5312 }
5313
5314 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5315 params.ht_capa =
5316 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5317
5318 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5319 params.vht_capa =
5320 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5321
5322 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5323 params.opmode_notif_used = true;
5324 params.opmode_notif =
5325 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5326 }
5327
5328 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5329 params.plink_action =
5330 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5331 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5332 return -EINVAL;
5333 }
5334
5335 err = nl80211_parse_sta_channel_info(info, &params);
5336 if (err)
5337 return err;
5338
5339 err = nl80211_parse_sta_wme(info, &params);
5340 if (err)
5341 return err;
5342
5343 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5344 return -EINVAL;
5345
5346 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5347 * as userspace might just pass through the capabilities from the IEs
5348 * directly, rather than enforcing this restriction and returning an
5349 * error in this case.
5350 */
5351 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5352 params.ht_capa = NULL;
5353 params.vht_capa = NULL;
5354 }
5355
5356 /* When you run into this, adjust the code below for the new flag */
5357 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5358
5359 switch (dev->ieee80211_ptr->iftype) {
5360 case NL80211_IFTYPE_AP:
5361 case NL80211_IFTYPE_AP_VLAN:
5362 case NL80211_IFTYPE_P2P_GO:
5363 /* ignore WME attributes if iface/sta is not capable */
5364 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5365 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5366 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5367
5368 /* TDLS peers cannot be added */
5369 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5370 info->attrs[NL80211_ATTR_PEER_AID])
5371 return -EINVAL;
5372 /* but don't bother the driver with it */
5373 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5374
5375 /* allow authenticated/associated only if driver handles it */
5376 if (!(rdev->wiphy.features &
5377 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5378 params.sta_flags_mask & auth_assoc)
5379 return -EINVAL;
5380
5381 /* Older userspace, or userspace wanting to be compatible with
5382 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5383 * and assoc flags in the mask, but assumes the station will be
5384 * added as associated anyway since this was the required driver
5385 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5386 * introduced.
5387 * In order to not bother drivers with this quirk in the API
5388 * set the flags in both the mask and set for new stations in
5389 * this case.
5390 */
5391 if (!(params.sta_flags_mask & auth_assoc)) {
5392 params.sta_flags_mask |= auth_assoc;
5393 params.sta_flags_set |= auth_assoc;
5394 }
5395
5396 /* must be last in here for error handling */
5397 params.vlan = get_vlan(info, rdev);
5398 if (IS_ERR(params.vlan))
5399 return PTR_ERR(params.vlan);
5400 break;
5401 case NL80211_IFTYPE_MESH_POINT:
5402 /* ignore uAPSD data */
5403 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5404
5405 /* associated is disallowed */
5406 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5407 return -EINVAL;
5408 /* TDLS peers cannot be added */
5409 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5410 info->attrs[NL80211_ATTR_PEER_AID])
5411 return -EINVAL;
5412 break;
5413 case NL80211_IFTYPE_STATION:
5414 case NL80211_IFTYPE_P2P_CLIENT:
5415 /* ignore uAPSD data */
5416 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5417
5418 /* these are disallowed */
5419 if (params.sta_flags_mask &
5420 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5421 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5422 return -EINVAL;
5423 /* Only TDLS peers can be added */
5424 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5425 return -EINVAL;
5426 /* Can only add if TDLS ... */
5427 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5428 return -EOPNOTSUPP;
5429 /* ... with external setup is supported */
5430 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5431 return -EOPNOTSUPP;
5432 /*
5433 * Older wpa_supplicant versions always mark the TDLS peer
5434 * as authorized, but it shouldn't yet be.
5435 */
5436 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5437 break;
5438 default:
5439 return -EOPNOTSUPP;
5440 }
5441
5442 /* be aware of params.vlan when changing code here */
5443
5444 err = rdev_add_station(rdev, dev, mac_addr, &params);
5445
5446 if (params.vlan)
5447 dev_put(params.vlan);
5448 return err;
5449 }
5450
5451 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5452 {
5453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5454 struct net_device *dev = info->user_ptr[1];
5455 struct station_del_parameters params;
5456
5457 memset(&params, 0, sizeof(params));
5458
5459 if (info->attrs[NL80211_ATTR_MAC])
5460 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5461
5462 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5463 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5465 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5466 return -EINVAL;
5467
5468 if (!rdev->ops->del_station)
5469 return -EOPNOTSUPP;
5470
5471 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5472 params.subtype =
5473 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5474 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5475 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5476 return -EINVAL;
5477 } else {
5478 /* Default to Deauthentication frame */
5479 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5480 }
5481
5482 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5483 params.reason_code =
5484 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5485 if (params.reason_code == 0)
5486 return -EINVAL; /* 0 is reserved */
5487 } else {
5488 /* Default to reason code 2 */
5489 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5490 }
5491
5492 return rdev_del_station(rdev, dev, &params);
5493 }
5494
5495 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5496 int flags, struct net_device *dev,
5497 u8 *dst, u8 *next_hop,
5498 struct mpath_info *pinfo)
5499 {
5500 void *hdr;
5501 struct nlattr *pinfoattr;
5502
5503 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5504 if (!hdr)
5505 return -1;
5506
5507 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5508 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5509 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5510 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5511 goto nla_put_failure;
5512
5513 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5514 if (!pinfoattr)
5515 goto nla_put_failure;
5516 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5517 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5518 pinfo->frame_qlen))
5519 goto nla_put_failure;
5520 if (((pinfo->filled & MPATH_INFO_SN) &&
5521 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5522 ((pinfo->filled & MPATH_INFO_METRIC) &&
5523 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5524 pinfo->metric)) ||
5525 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5526 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5527 pinfo->exptime)) ||
5528 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5529 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5530 pinfo->flags)) ||
5531 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5532 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5533 pinfo->discovery_timeout)) ||
5534 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5535 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5536 pinfo->discovery_retries)))
5537 goto nla_put_failure;
5538
5539 nla_nest_end(msg, pinfoattr);
5540
5541 genlmsg_end(msg, hdr);
5542 return 0;
5543
5544 nla_put_failure:
5545 genlmsg_cancel(msg, hdr);
5546 return -EMSGSIZE;
5547 }
5548
5549 static int nl80211_dump_mpath(struct sk_buff *skb,
5550 struct netlink_callback *cb)
5551 {
5552 struct mpath_info pinfo;
5553 struct cfg80211_registered_device *rdev;
5554 struct wireless_dev *wdev;
5555 u8 dst[ETH_ALEN];
5556 u8 next_hop[ETH_ALEN];
5557 int path_idx = cb->args[2];
5558 int err;
5559
5560 rtnl_lock();
5561 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5562 if (err)
5563 goto out_err;
5564
5565 if (!rdev->ops->dump_mpath) {
5566 err = -EOPNOTSUPP;
5567 goto out_err;
5568 }
5569
5570 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5571 err = -EOPNOTSUPP;
5572 goto out_err;
5573 }
5574
5575 while (1) {
5576 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5577 next_hop, &pinfo);
5578 if (err == -ENOENT)
5579 break;
5580 if (err)
5581 goto out_err;
5582
5583 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5584 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5585 wdev->netdev, dst, next_hop,
5586 &pinfo) < 0)
5587 goto out;
5588
5589 path_idx++;
5590 }
5591
5592 out:
5593 cb->args[2] = path_idx;
5594 err = skb->len;
5595 out_err:
5596 rtnl_unlock();
5597 return err;
5598 }
5599
5600 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5601 {
5602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5603 int err;
5604 struct net_device *dev = info->user_ptr[1];
5605 struct mpath_info pinfo;
5606 struct sk_buff *msg;
5607 u8 *dst = NULL;
5608 u8 next_hop[ETH_ALEN];
5609
5610 memset(&pinfo, 0, sizeof(pinfo));
5611
5612 if (!info->attrs[NL80211_ATTR_MAC])
5613 return -EINVAL;
5614
5615 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5616
5617 if (!rdev->ops->get_mpath)
5618 return -EOPNOTSUPP;
5619
5620 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5621 return -EOPNOTSUPP;
5622
5623 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5624 if (err)
5625 return err;
5626
5627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5628 if (!msg)
5629 return -ENOMEM;
5630
5631 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5632 dev, dst, next_hop, &pinfo) < 0) {
5633 nlmsg_free(msg);
5634 return -ENOBUFS;
5635 }
5636
5637 return genlmsg_reply(msg, info);
5638 }
5639
5640 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5641 {
5642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5643 struct net_device *dev = info->user_ptr[1];
5644 u8 *dst = NULL;
5645 u8 *next_hop = NULL;
5646
5647 if (!info->attrs[NL80211_ATTR_MAC])
5648 return -EINVAL;
5649
5650 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5651 return -EINVAL;
5652
5653 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5654 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5655
5656 if (!rdev->ops->change_mpath)
5657 return -EOPNOTSUPP;
5658
5659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5660 return -EOPNOTSUPP;
5661
5662 return rdev_change_mpath(rdev, dev, dst, next_hop);
5663 }
5664
5665 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5666 {
5667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5668 struct net_device *dev = info->user_ptr[1];
5669 u8 *dst = NULL;
5670 u8 *next_hop = NULL;
5671
5672 if (!info->attrs[NL80211_ATTR_MAC])
5673 return -EINVAL;
5674
5675 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5676 return -EINVAL;
5677
5678 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5679 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5680
5681 if (!rdev->ops->add_mpath)
5682 return -EOPNOTSUPP;
5683
5684 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5685 return -EOPNOTSUPP;
5686
5687 return rdev_add_mpath(rdev, dev, dst, next_hop);
5688 }
5689
5690 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5691 {
5692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5693 struct net_device *dev = info->user_ptr[1];
5694 u8 *dst = NULL;
5695
5696 if (info->attrs[NL80211_ATTR_MAC])
5697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5698
5699 if (!rdev->ops->del_mpath)
5700 return -EOPNOTSUPP;
5701
5702 return rdev_del_mpath(rdev, dev, dst);
5703 }
5704
5705 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5706 {
5707 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5708 int err;
5709 struct net_device *dev = info->user_ptr[1];
5710 struct mpath_info pinfo;
5711 struct sk_buff *msg;
5712 u8 *dst = NULL;
5713 u8 mpp[ETH_ALEN];
5714
5715 memset(&pinfo, 0, sizeof(pinfo));
5716
5717 if (!info->attrs[NL80211_ATTR_MAC])
5718 return -EINVAL;
5719
5720 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5721
5722 if (!rdev->ops->get_mpp)
5723 return -EOPNOTSUPP;
5724
5725 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5726 return -EOPNOTSUPP;
5727
5728 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5729 if (err)
5730 return err;
5731
5732 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5733 if (!msg)
5734 return -ENOMEM;
5735
5736 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5737 dev, dst, mpp, &pinfo) < 0) {
5738 nlmsg_free(msg);
5739 return -ENOBUFS;
5740 }
5741
5742 return genlmsg_reply(msg, info);
5743 }
5744
5745 static int nl80211_dump_mpp(struct sk_buff *skb,
5746 struct netlink_callback *cb)
5747 {
5748 struct mpath_info pinfo;
5749 struct cfg80211_registered_device *rdev;
5750 struct wireless_dev *wdev;
5751 u8 dst[ETH_ALEN];
5752 u8 mpp[ETH_ALEN];
5753 int path_idx = cb->args[2];
5754 int err;
5755
5756 rtnl_lock();
5757 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5758 if (err)
5759 goto out_err;
5760
5761 if (!rdev->ops->dump_mpp) {
5762 err = -EOPNOTSUPP;
5763 goto out_err;
5764 }
5765
5766 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5767 err = -EOPNOTSUPP;
5768 goto out_err;
5769 }
5770
5771 while (1) {
5772 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5773 mpp, &pinfo);
5774 if (err == -ENOENT)
5775 break;
5776 if (err)
5777 goto out_err;
5778
5779 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5780 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5781 wdev->netdev, dst, mpp,
5782 &pinfo) < 0)
5783 goto out;
5784
5785 path_idx++;
5786 }
5787
5788 out:
5789 cb->args[2] = path_idx;
5790 err = skb->len;
5791 out_err:
5792 rtnl_unlock();
5793 return err;
5794 }
5795
5796 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5797 {
5798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5799 struct net_device *dev = info->user_ptr[1];
5800 struct wireless_dev *wdev = dev->ieee80211_ptr;
5801 struct bss_parameters params;
5802 int err;
5803
5804 memset(&params, 0, sizeof(params));
5805 /* default to not changing parameters */
5806 params.use_cts_prot = -1;
5807 params.use_short_preamble = -1;
5808 params.use_short_slot_time = -1;
5809 params.ap_isolate = -1;
5810 params.ht_opmode = -1;
5811 params.p2p_ctwindow = -1;
5812 params.p2p_opp_ps = -1;
5813
5814 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5815 params.use_cts_prot =
5816 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5817 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5818 params.use_short_preamble =
5819 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5820 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5821 params.use_short_slot_time =
5822 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5823 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5824 params.basic_rates =
5825 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5826 params.basic_rates_len =
5827 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5828 }
5829 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5830 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5831 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5832 params.ht_opmode =
5833 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5834
5835 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5836 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5837 return -EINVAL;
5838 params.p2p_ctwindow =
5839 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5840 if (params.p2p_ctwindow < 0)
5841 return -EINVAL;
5842 if (params.p2p_ctwindow != 0 &&
5843 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5844 return -EINVAL;
5845 }
5846
5847 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5848 u8 tmp;
5849
5850 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5851 return -EINVAL;
5852 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5853 if (tmp > 1)
5854 return -EINVAL;
5855 params.p2p_opp_ps = tmp;
5856 if (params.p2p_opp_ps &&
5857 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5858 return -EINVAL;
5859 }
5860
5861 if (!rdev->ops->change_bss)
5862 return -EOPNOTSUPP;
5863
5864 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5865 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5866 return -EOPNOTSUPP;
5867
5868 wdev_lock(wdev);
5869 err = rdev_change_bss(rdev, dev, &params);
5870 wdev_unlock(wdev);
5871
5872 return err;
5873 }
5874
5875 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5876 {
5877 char *data = NULL;
5878 bool is_indoor;
5879 enum nl80211_user_reg_hint_type user_reg_hint_type;
5880 u32 owner_nlportid;
5881
5882 /*
5883 * You should only get this when cfg80211 hasn't yet initialized
5884 * completely when built-in to the kernel right between the time
5885 * window between nl80211_init() and regulatory_init(), if that is
5886 * even possible.
5887 */
5888 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5889 return -EINPROGRESS;
5890
5891 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5892 user_reg_hint_type =
5893 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5894 else
5895 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5896
5897 switch (user_reg_hint_type) {
5898 case NL80211_USER_REG_HINT_USER:
5899 case NL80211_USER_REG_HINT_CELL_BASE:
5900 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5901 return -EINVAL;
5902
5903 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5904 return regulatory_hint_user(data, user_reg_hint_type);
5905 case NL80211_USER_REG_HINT_INDOOR:
5906 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5907 owner_nlportid = info->snd_portid;
5908 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5909 } else {
5910 owner_nlportid = 0;
5911 is_indoor = true;
5912 }
5913
5914 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5915 default:
5916 return -EINVAL;
5917 }
5918 }
5919
5920 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5921 {
5922 return reg_reload_regdb();
5923 }
5924
5925 static int nl80211_get_mesh_config(struct sk_buff *skb,
5926 struct genl_info *info)
5927 {
5928 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5929 struct net_device *dev = info->user_ptr[1];
5930 struct wireless_dev *wdev = dev->ieee80211_ptr;
5931 struct mesh_config cur_params;
5932 int err = 0;
5933 void *hdr;
5934 struct nlattr *pinfoattr;
5935 struct sk_buff *msg;
5936
5937 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5938 return -EOPNOTSUPP;
5939
5940 if (!rdev->ops->get_mesh_config)
5941 return -EOPNOTSUPP;
5942
5943 wdev_lock(wdev);
5944 /* If not connected, get default parameters */
5945 if (!wdev->mesh_id_len)
5946 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5947 else
5948 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5949 wdev_unlock(wdev);
5950
5951 if (err)
5952 return err;
5953
5954 /* Draw up a netlink message to send back */
5955 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5956 if (!msg)
5957 return -ENOMEM;
5958 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5959 NL80211_CMD_GET_MESH_CONFIG);
5960 if (!hdr)
5961 goto out;
5962 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5963 if (!pinfoattr)
5964 goto nla_put_failure;
5965 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5966 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5967 cur_params.dot11MeshRetryTimeout) ||
5968 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5969 cur_params.dot11MeshConfirmTimeout) ||
5970 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5971 cur_params.dot11MeshHoldingTimeout) ||
5972 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5973 cur_params.dot11MeshMaxPeerLinks) ||
5974 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5975 cur_params.dot11MeshMaxRetries) ||
5976 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5977 cur_params.dot11MeshTTL) ||
5978 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5979 cur_params.element_ttl) ||
5980 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5981 cur_params.auto_open_plinks) ||
5982 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5983 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5984 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5985 cur_params.dot11MeshHWMPmaxPREQretries) ||
5986 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5987 cur_params.path_refresh_time) ||
5988 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5989 cur_params.min_discovery_timeout) ||
5990 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5991 cur_params.dot11MeshHWMPactivePathTimeout) ||
5992 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5993 cur_params.dot11MeshHWMPpreqMinInterval) ||
5994 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5995 cur_params.dot11MeshHWMPperrMinInterval) ||
5996 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5997 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5998 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5999 cur_params.dot11MeshHWMPRootMode) ||
6000 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6001 cur_params.dot11MeshHWMPRannInterval) ||
6002 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6003 cur_params.dot11MeshGateAnnouncementProtocol) ||
6004 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6005 cur_params.dot11MeshForwarding) ||
6006 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6007 cur_params.rssi_threshold) ||
6008 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6009 cur_params.ht_opmode) ||
6010 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6011 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6012 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6013 cur_params.dot11MeshHWMProotInterval) ||
6014 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6015 cur_params.dot11MeshHWMPconfirmationInterval) ||
6016 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6017 cur_params.power_mode) ||
6018 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6019 cur_params.dot11MeshAwakeWindowDuration) ||
6020 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6021 cur_params.plink_timeout))
6022 goto nla_put_failure;
6023 nla_nest_end(msg, pinfoattr);
6024 genlmsg_end(msg, hdr);
6025 return genlmsg_reply(msg, info);
6026
6027 nla_put_failure:
6028 out:
6029 nlmsg_free(msg);
6030 return -ENOBUFS;
6031 }
6032
6033 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6034 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6035 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6036 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6037 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6038 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6039 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6040 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6041 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6042 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6043 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6044 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6045 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6046 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6047 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6048 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6049 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6050 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6051 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6052 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6053 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6054 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6055 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6056 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6057 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6058 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6059 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6060 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6061 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6062 };
6063
6064 static const struct nla_policy
6065 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6066 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6067 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6068 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6069 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6070 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6071 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6072 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6073 .len = IEEE80211_MAX_DATA_LEN },
6074 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6075 };
6076
6077 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6078 {
6079 u8 val = nla_get_u8(nla);
6080 if (val < min || val > max)
6081 return -EINVAL;
6082 *out = val;
6083 return 0;
6084 }
6085
6086 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6087 {
6088 u8 val = nla_get_u8(nla);
6089 if (val < min || val > max)
6090 return -EINVAL;
6091 *out = val;
6092 return 0;
6093 }
6094
6095 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6096 {
6097 u16 val = nla_get_u16(nla);
6098 if (val < min || val > max)
6099 return -EINVAL;
6100 *out = val;
6101 return 0;
6102 }
6103
6104 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6105 {
6106 u32 val = nla_get_u32(nla);
6107 if (val < min || val > max)
6108 return -EINVAL;
6109 *out = val;
6110 return 0;
6111 }
6112
6113 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6114 {
6115 s32 val = nla_get_s32(nla);
6116 if (val < min || val > max)
6117 return -EINVAL;
6118 *out = val;
6119 return 0;
6120 }
6121
6122 static int nl80211_check_power_mode(const struct nlattr *nla,
6123 enum nl80211_mesh_power_mode min,
6124 enum nl80211_mesh_power_mode max,
6125 enum nl80211_mesh_power_mode *out)
6126 {
6127 u32 val = nla_get_u32(nla);
6128 if (val < min || val > max)
6129 return -EINVAL;
6130 *out = val;
6131 return 0;
6132 }
6133
6134 static int nl80211_parse_mesh_config(struct genl_info *info,
6135 struct mesh_config *cfg,
6136 u32 *mask_out)
6137 {
6138 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6139 u32 mask = 0;
6140 u16 ht_opmode;
6141
6142 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6143 do { \
6144 if (tb[attr]) { \
6145 if (fn(tb[attr], min, max, &cfg->param)) \
6146 return -EINVAL; \
6147 mask |= (1 << (attr - 1)); \
6148 } \
6149 } while (0)
6150
6151 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6152 return -EINVAL;
6153 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6154 info->attrs[NL80211_ATTR_MESH_CONFIG],
6155 nl80211_meshconf_params_policy, info->extack))
6156 return -EINVAL;
6157
6158 /* This makes sure that there aren't more than 32 mesh config
6159 * parameters (otherwise our bitfield scheme would not work.) */
6160 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6161
6162 /* Fill in the params struct */
6163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6164 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6165 nl80211_check_u16);
6166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6167 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6168 nl80211_check_u16);
6169 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6170 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6171 nl80211_check_u16);
6172 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6173 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6174 nl80211_check_u16);
6175 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6176 mask, NL80211_MESHCONF_MAX_RETRIES,
6177 nl80211_check_u8);
6178 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6179 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6180 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6181 mask, NL80211_MESHCONF_ELEMENT_TTL,
6182 nl80211_check_u8);
6183 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6184 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6185 nl80211_check_bool);
6186 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6187 1, 255, mask,
6188 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6189 nl80211_check_u32);
6190 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6191 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6192 nl80211_check_u8);
6193 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6194 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6195 nl80211_check_u32);
6196 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6197 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6198 nl80211_check_u16);
6199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6200 1, 65535, mask,
6201 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6202 nl80211_check_u32);
6203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6204 1, 65535, mask,
6205 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6206 nl80211_check_u16);
6207 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6208 1, 65535, mask,
6209 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6210 nl80211_check_u16);
6211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6212 dot11MeshHWMPnetDiameterTraversalTime,
6213 1, 65535, mask,
6214 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6215 nl80211_check_u16);
6216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6217 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6218 nl80211_check_u8);
6219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6220 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6221 nl80211_check_u16);
6222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6223 dot11MeshGateAnnouncementProtocol, 0, 1,
6224 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6225 nl80211_check_bool);
6226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6227 mask, NL80211_MESHCONF_FORWARDING,
6228 nl80211_check_bool);
6229 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6230 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6231 nl80211_check_s32);
6232 /*
6233 * Check HT operation mode based on
6234 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6235 */
6236 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6237 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6238
6239 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6240 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6241 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6242 return -EINVAL;
6243
6244 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6245 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6246 return -EINVAL;
6247
6248 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6249 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6250 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6251 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6252 return -EINVAL;
6253 break;
6254 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6255 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6256 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6257 return -EINVAL;
6258 break;
6259 }
6260 cfg->ht_opmode = ht_opmode;
6261 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6262 }
6263 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6264 1, 65535, mask,
6265 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6266 nl80211_check_u32);
6267 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6268 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6269 nl80211_check_u16);
6270 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6271 dot11MeshHWMPconfirmationInterval,
6272 1, 65535, mask,
6273 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6274 nl80211_check_u16);
6275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6276 NL80211_MESH_POWER_ACTIVE,
6277 NL80211_MESH_POWER_MAX,
6278 mask, NL80211_MESHCONF_POWER_MODE,
6279 nl80211_check_power_mode);
6280 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6281 0, 65535, mask,
6282 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6283 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6284 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6285 nl80211_check_u32);
6286 if (mask_out)
6287 *mask_out = mask;
6288
6289 return 0;
6290
6291 #undef FILL_IN_MESH_PARAM_IF_SET
6292 }
6293
6294 static int nl80211_parse_mesh_setup(struct genl_info *info,
6295 struct mesh_setup *setup)
6296 {
6297 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6299
6300 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6301 return -EINVAL;
6302 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6303 info->attrs[NL80211_ATTR_MESH_SETUP],
6304 nl80211_mesh_setup_params_policy, info->extack))
6305 return -EINVAL;
6306
6307 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6308 setup->sync_method =
6309 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6310 IEEE80211_SYNC_METHOD_VENDOR :
6311 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6312
6313 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6314 setup->path_sel_proto =
6315 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6316 IEEE80211_PATH_PROTOCOL_VENDOR :
6317 IEEE80211_PATH_PROTOCOL_HWMP;
6318
6319 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6320 setup->path_metric =
6321 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6322 IEEE80211_PATH_METRIC_VENDOR :
6323 IEEE80211_PATH_METRIC_AIRTIME;
6324
6325 if (tb[NL80211_MESH_SETUP_IE]) {
6326 struct nlattr *ieattr =
6327 tb[NL80211_MESH_SETUP_IE];
6328 if (!is_valid_ie_attr(ieattr))
6329 return -EINVAL;
6330 setup->ie = nla_data(ieattr);
6331 setup->ie_len = nla_len(ieattr);
6332 }
6333 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6334 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6335 return -EINVAL;
6336 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6337 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6338 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6339 if (setup->is_secure)
6340 setup->user_mpm = true;
6341
6342 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6343 if (!setup->user_mpm)
6344 return -EINVAL;
6345 setup->auth_id =
6346 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6347 }
6348
6349 return 0;
6350 }
6351
6352 static int nl80211_update_mesh_config(struct sk_buff *skb,
6353 struct genl_info *info)
6354 {
6355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6356 struct net_device *dev = info->user_ptr[1];
6357 struct wireless_dev *wdev = dev->ieee80211_ptr;
6358 struct mesh_config cfg;
6359 u32 mask;
6360 int err;
6361
6362 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6363 return -EOPNOTSUPP;
6364
6365 if (!rdev->ops->update_mesh_config)
6366 return -EOPNOTSUPP;
6367
6368 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6369 if (err)
6370 return err;
6371
6372 wdev_lock(wdev);
6373 if (!wdev->mesh_id_len)
6374 err = -ENOLINK;
6375
6376 if (!err)
6377 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6378
6379 wdev_unlock(wdev);
6380
6381 return err;
6382 }
6383
6384 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6385 struct sk_buff *msg)
6386 {
6387 struct nlattr *nl_reg_rules;
6388 unsigned int i;
6389
6390 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6391 (regdom->dfs_region &&
6392 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6393 goto nla_put_failure;
6394
6395 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6396 if (!nl_reg_rules)
6397 goto nla_put_failure;
6398
6399 for (i = 0; i < regdom->n_reg_rules; i++) {
6400 struct nlattr *nl_reg_rule;
6401 const struct ieee80211_reg_rule *reg_rule;
6402 const struct ieee80211_freq_range *freq_range;
6403 const struct ieee80211_power_rule *power_rule;
6404 unsigned int max_bandwidth_khz;
6405
6406 reg_rule = &regdom->reg_rules[i];
6407 freq_range = &reg_rule->freq_range;
6408 power_rule = &reg_rule->power_rule;
6409
6410 nl_reg_rule = nla_nest_start(msg, i);
6411 if (!nl_reg_rule)
6412 goto nla_put_failure;
6413
6414 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6415 if (!max_bandwidth_khz)
6416 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6417 reg_rule);
6418
6419 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6420 reg_rule->flags) ||
6421 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6422 freq_range->start_freq_khz) ||
6423 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6424 freq_range->end_freq_khz) ||
6425 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6426 max_bandwidth_khz) ||
6427 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6428 power_rule->max_antenna_gain) ||
6429 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6430 power_rule->max_eirp) ||
6431 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6432 reg_rule->dfs_cac_ms))
6433 goto nla_put_failure;
6434
6435 nla_nest_end(msg, nl_reg_rule);
6436 }
6437
6438 nla_nest_end(msg, nl_reg_rules);
6439 return 0;
6440
6441 nla_put_failure:
6442 return -EMSGSIZE;
6443 }
6444
6445 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6446 {
6447 const struct ieee80211_regdomain *regdom = NULL;
6448 struct cfg80211_registered_device *rdev;
6449 struct wiphy *wiphy = NULL;
6450 struct sk_buff *msg;
6451 void *hdr;
6452
6453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6454 if (!msg)
6455 return -ENOBUFS;
6456
6457 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6458 NL80211_CMD_GET_REG);
6459 if (!hdr)
6460 goto put_failure;
6461
6462 if (info->attrs[NL80211_ATTR_WIPHY]) {
6463 bool self_managed;
6464
6465 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6466 if (IS_ERR(rdev)) {
6467 nlmsg_free(msg);
6468 return PTR_ERR(rdev);
6469 }
6470
6471 wiphy = &rdev->wiphy;
6472 self_managed = wiphy->regulatory_flags &
6473 REGULATORY_WIPHY_SELF_MANAGED;
6474 regdom = get_wiphy_regdom(wiphy);
6475
6476 /* a self-managed-reg device must have a private regdom */
6477 if (WARN_ON(!regdom && self_managed)) {
6478 nlmsg_free(msg);
6479 return -EINVAL;
6480 }
6481
6482 if (regdom &&
6483 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6484 goto nla_put_failure;
6485 }
6486
6487 if (!wiphy && reg_last_request_cell_base() &&
6488 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6489 NL80211_USER_REG_HINT_CELL_BASE))
6490 goto nla_put_failure;
6491
6492 rcu_read_lock();
6493
6494 if (!regdom)
6495 regdom = rcu_dereference(cfg80211_regdomain);
6496
6497 if (nl80211_put_regdom(regdom, msg))
6498 goto nla_put_failure_rcu;
6499
6500 rcu_read_unlock();
6501
6502 genlmsg_end(msg, hdr);
6503 return genlmsg_reply(msg, info);
6504
6505 nla_put_failure_rcu:
6506 rcu_read_unlock();
6507 nla_put_failure:
6508 put_failure:
6509 nlmsg_free(msg);
6510 return -EMSGSIZE;
6511 }
6512
6513 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6514 u32 seq, int flags, struct wiphy *wiphy,
6515 const struct ieee80211_regdomain *regdom)
6516 {
6517 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6518 NL80211_CMD_GET_REG);
6519
6520 if (!hdr)
6521 return -1;
6522
6523 genl_dump_check_consistent(cb, hdr);
6524
6525 if (nl80211_put_regdom(regdom, msg))
6526 goto nla_put_failure;
6527
6528 if (!wiphy && reg_last_request_cell_base() &&
6529 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6530 NL80211_USER_REG_HINT_CELL_BASE))
6531 goto nla_put_failure;
6532
6533 if (wiphy &&
6534 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6535 goto nla_put_failure;
6536
6537 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6538 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6539 goto nla_put_failure;
6540
6541 genlmsg_end(msg, hdr);
6542 return 0;
6543
6544 nla_put_failure:
6545 genlmsg_cancel(msg, hdr);
6546 return -EMSGSIZE;
6547 }
6548
6549 static int nl80211_get_reg_dump(struct sk_buff *skb,
6550 struct netlink_callback *cb)
6551 {
6552 const struct ieee80211_regdomain *regdom = NULL;
6553 struct cfg80211_registered_device *rdev;
6554 int err, reg_idx, start = cb->args[2];
6555
6556 rtnl_lock();
6557
6558 if (cfg80211_regdomain && start == 0) {
6559 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6560 NLM_F_MULTI, NULL,
6561 rtnl_dereference(cfg80211_regdomain));
6562 if (err < 0)
6563 goto out_err;
6564 }
6565
6566 /* the global regdom is idx 0 */
6567 reg_idx = 1;
6568 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6569 regdom = get_wiphy_regdom(&rdev->wiphy);
6570 if (!regdom)
6571 continue;
6572
6573 if (++reg_idx <= start)
6574 continue;
6575
6576 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6577 NLM_F_MULTI, &rdev->wiphy, regdom);
6578 if (err < 0) {
6579 reg_idx--;
6580 break;
6581 }
6582 }
6583
6584 cb->args[2] = reg_idx;
6585 err = skb->len;
6586 out_err:
6587 rtnl_unlock();
6588 return err;
6589 }
6590
6591 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6592 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6593 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6594 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6595 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6596 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6597 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6598 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6599 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6600 };
6601
6602 static int parse_reg_rule(struct nlattr *tb[],
6603 struct ieee80211_reg_rule *reg_rule)
6604 {
6605 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6606 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6607
6608 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6609 return -EINVAL;
6610 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6611 return -EINVAL;
6612 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6613 return -EINVAL;
6614 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6615 return -EINVAL;
6616 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6617 return -EINVAL;
6618
6619 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6620
6621 freq_range->start_freq_khz =
6622 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6623 freq_range->end_freq_khz =
6624 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6625 freq_range->max_bandwidth_khz =
6626 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6627
6628 power_rule->max_eirp =
6629 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6630
6631 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6632 power_rule->max_antenna_gain =
6633 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6634
6635 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6636 reg_rule->dfs_cac_ms =
6637 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6638
6639 return 0;
6640 }
6641
6642 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6643 {
6644 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6645 struct nlattr *nl_reg_rule;
6646 char *alpha2;
6647 int rem_reg_rules, r;
6648 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6649 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6650 struct ieee80211_regdomain *rd;
6651
6652 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6653 return -EINVAL;
6654
6655 if (!info->attrs[NL80211_ATTR_REG_RULES])
6656 return -EINVAL;
6657
6658 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6659
6660 if (info->attrs[NL80211_ATTR_DFS_REGION])
6661 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6662
6663 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6664 rem_reg_rules) {
6665 num_rules++;
6666 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6667 return -EINVAL;
6668 }
6669
6670 if (!reg_is_valid_request(alpha2))
6671 return -EINVAL;
6672
6673 size_of_regd = sizeof(struct ieee80211_regdomain) +
6674 num_rules * sizeof(struct ieee80211_reg_rule);
6675
6676 rd = kzalloc(size_of_regd, GFP_KERNEL);
6677 if (!rd)
6678 return -ENOMEM;
6679
6680 rd->n_reg_rules = num_rules;
6681 rd->alpha2[0] = alpha2[0];
6682 rd->alpha2[1] = alpha2[1];
6683
6684 /*
6685 * Disable DFS master mode if the DFS region was
6686 * not supported or known on this kernel.
6687 */
6688 if (reg_supported_dfs_region(dfs_region))
6689 rd->dfs_region = dfs_region;
6690
6691 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6692 rem_reg_rules) {
6693 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6694 nl_reg_rule, reg_rule_policy,
6695 info->extack);
6696 if (r)
6697 goto bad_reg;
6698 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6699 if (r)
6700 goto bad_reg;
6701
6702 rule_idx++;
6703
6704 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6705 r = -EINVAL;
6706 goto bad_reg;
6707 }
6708 }
6709
6710 /* set_regdom takes ownership of rd */
6711 return set_regdom(rd, REGD_SOURCE_CRDA);
6712 bad_reg:
6713 kfree(rd);
6714 return r;
6715 }
6716 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6717
6718 static int validate_scan_freqs(struct nlattr *freqs)
6719 {
6720 struct nlattr *attr1, *attr2;
6721 int n_channels = 0, tmp1, tmp2;
6722
6723 nla_for_each_nested(attr1, freqs, tmp1)
6724 if (nla_len(attr1) != sizeof(u32))
6725 return 0;
6726
6727 nla_for_each_nested(attr1, freqs, tmp1) {
6728 n_channels++;
6729 /*
6730 * Some hardware has a limited channel list for
6731 * scanning, and it is pretty much nonsensical
6732 * to scan for a channel twice, so disallow that
6733 * and don't require drivers to check that the
6734 * channel list they get isn't longer than what
6735 * they can scan, as long as they can scan all
6736 * the channels they registered at once.
6737 */
6738 nla_for_each_nested(attr2, freqs, tmp2)
6739 if (attr1 != attr2 &&
6740 nla_get_u32(attr1) == nla_get_u32(attr2))
6741 return 0;
6742 }
6743
6744 return n_channels;
6745 }
6746
6747 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6748 {
6749 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6750 }
6751
6752 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6753 struct cfg80211_bss_selection *bss_select)
6754 {
6755 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6756 struct nlattr *nest;
6757 int err;
6758 bool found = false;
6759 int i;
6760
6761 /* only process one nested attribute */
6762 nest = nla_data(nla);
6763 if (!nla_ok(nest, nla_len(nest)))
6764 return -EINVAL;
6765
6766 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6767 nl80211_bss_select_policy, NULL);
6768 if (err)
6769 return err;
6770
6771 /* only one attribute may be given */
6772 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6773 if (attr[i]) {
6774 if (found)
6775 return -EINVAL;
6776 found = true;
6777 }
6778 }
6779
6780 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6781
6782 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6783 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6784
6785 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6786 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6787 bss_select->param.band_pref =
6788 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6789 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6790 return -EINVAL;
6791 }
6792
6793 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6794 struct nl80211_bss_select_rssi_adjust *adj_param;
6795
6796 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6797 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6798 bss_select->param.adjust.band = adj_param->band;
6799 bss_select->param.adjust.delta = adj_param->delta;
6800 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6801 return -EINVAL;
6802 }
6803
6804 /* user-space did not provide behaviour attribute */
6805 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6806 return -EINVAL;
6807
6808 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6809 return -EINVAL;
6810
6811 return 0;
6812 }
6813
6814 static int nl80211_parse_random_mac(struct nlattr **attrs,
6815 u8 *mac_addr, u8 *mac_addr_mask)
6816 {
6817 int i;
6818
6819 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6820 eth_zero_addr(mac_addr);
6821 eth_zero_addr(mac_addr_mask);
6822 mac_addr[0] = 0x2;
6823 mac_addr_mask[0] = 0x3;
6824
6825 return 0;
6826 }
6827
6828 /* need both or none */
6829 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6830 return -EINVAL;
6831
6832 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6833 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6834
6835 /* don't allow or configure an mcast address */
6836 if (!is_multicast_ether_addr(mac_addr_mask) ||
6837 is_multicast_ether_addr(mac_addr))
6838 return -EINVAL;
6839
6840 /*
6841 * allow users to pass a MAC address that has bits set outside
6842 * of the mask, but don't bother drivers with having to deal
6843 * with such bits
6844 */
6845 for (i = 0; i < ETH_ALEN; i++)
6846 mac_addr[i] &= mac_addr_mask[i];
6847
6848 return 0;
6849 }
6850
6851 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6852 {
6853 ASSERT_WDEV_LOCK(wdev);
6854
6855 if (!cfg80211_beaconing_iface_active(wdev))
6856 return true;
6857
6858 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6859 return true;
6860
6861 return regulatory_pre_cac_allowed(wdev->wiphy);
6862 }
6863
6864 static int
6865 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6866 void *request, struct nlattr **attrs,
6867 bool is_sched_scan)
6868 {
6869 u8 *mac_addr, *mac_addr_mask;
6870 u32 *flags;
6871 enum nl80211_feature_flags randomness_flag;
6872
6873 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6874 return 0;
6875
6876 if (is_sched_scan) {
6877 struct cfg80211_sched_scan_request *req = request;
6878
6879 randomness_flag = wdev ?
6880 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6881 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6882 flags = &req->flags;
6883 mac_addr = req->mac_addr;
6884 mac_addr_mask = req->mac_addr_mask;
6885 } else {
6886 struct cfg80211_scan_request *req = request;
6887
6888 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6889 flags = &req->flags;
6890 mac_addr = req->mac_addr;
6891 mac_addr_mask = req->mac_addr_mask;
6892 }
6893
6894 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6895
6896 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6897 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
6898 ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) &&
6899 !wiphy_ext_feature_isset(wiphy,
6900 NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) ||
6901 ((*flags & NL80211_SCAN_FLAG_LOW_POWER) &&
6902 !wiphy_ext_feature_isset(wiphy,
6903 NL80211_EXT_FEATURE_LOW_POWER_SCAN)) ||
6904 ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) &&
6905 !wiphy_ext_feature_isset(wiphy,
6906 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN)))
6907 return -EOPNOTSUPP;
6908
6909 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6910 int err;
6911
6912 if (!(wiphy->features & randomness_flag) ||
6913 (wdev && wdev->current_bss))
6914 return -EOPNOTSUPP;
6915
6916 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6917 if (err)
6918 return err;
6919 }
6920
6921 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6922 !wiphy_ext_feature_isset(wiphy,
6923 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6924 return -EOPNOTSUPP;
6925
6926 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6927 !wiphy_ext_feature_isset(wiphy,
6928 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6929 return -EOPNOTSUPP;
6930
6931 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6932 !wiphy_ext_feature_isset(wiphy,
6933 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6934 return -EOPNOTSUPP;
6935
6936 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6937 !wiphy_ext_feature_isset(wiphy,
6938 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6939 return -EOPNOTSUPP;
6940
6941 return 0;
6942 }
6943
6944 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6945 {
6946 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6947 struct wireless_dev *wdev = info->user_ptr[1];
6948 struct cfg80211_scan_request *request;
6949 struct nlattr *attr;
6950 struct wiphy *wiphy;
6951 int err, tmp, n_ssids = 0, n_channels, i;
6952 size_t ie_len;
6953
6954 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6955 return -EINVAL;
6956
6957 wiphy = &rdev->wiphy;
6958
6959 if (wdev->iftype == NL80211_IFTYPE_NAN)
6960 return -EOPNOTSUPP;
6961
6962 if (!rdev->ops->scan)
6963 return -EOPNOTSUPP;
6964
6965 if (rdev->scan_req || rdev->scan_msg) {
6966 err = -EBUSY;
6967 goto unlock;
6968 }
6969
6970 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6971 n_channels = validate_scan_freqs(
6972 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6973 if (!n_channels) {
6974 err = -EINVAL;
6975 goto unlock;
6976 }
6977 } else {
6978 n_channels = ieee80211_get_num_supported_channels(wiphy);
6979 }
6980
6981 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6982 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6983 n_ssids++;
6984
6985 if (n_ssids > wiphy->max_scan_ssids) {
6986 err = -EINVAL;
6987 goto unlock;
6988 }
6989
6990 if (info->attrs[NL80211_ATTR_IE])
6991 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6992 else
6993 ie_len = 0;
6994
6995 if (ie_len > wiphy->max_scan_ie_len) {
6996 err = -EINVAL;
6997 goto unlock;
6998 }
6999
7000 request = kzalloc(sizeof(*request)
7001 + sizeof(*request->ssids) * n_ssids
7002 + sizeof(*request->channels) * n_channels
7003 + ie_len, GFP_KERNEL);
7004 if (!request) {
7005 err = -ENOMEM;
7006 goto unlock;
7007 }
7008
7009 if (n_ssids)
7010 request->ssids = (void *)&request->channels[n_channels];
7011 request->n_ssids = n_ssids;
7012 if (ie_len) {
7013 if (n_ssids)
7014 request->ie = (void *)(request->ssids + n_ssids);
7015 else
7016 request->ie = (void *)(request->channels + n_channels);
7017 }
7018
7019 i = 0;
7020 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7021 /* user specified, bail out if channel not found */
7022 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7023 struct ieee80211_channel *chan;
7024
7025 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7026
7027 if (!chan) {
7028 err = -EINVAL;
7029 goto out_free;
7030 }
7031
7032 /* ignore disabled channels */
7033 if (chan->flags & IEEE80211_CHAN_DISABLED)
7034 continue;
7035
7036 request->channels[i] = chan;
7037 i++;
7038 }
7039 } else {
7040 enum nl80211_band band;
7041
7042 /* all channels */
7043 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7044 int j;
7045
7046 if (!wiphy->bands[band])
7047 continue;
7048 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7049 struct ieee80211_channel *chan;
7050
7051 chan = &wiphy->bands[band]->channels[j];
7052
7053 if (chan->flags & IEEE80211_CHAN_DISABLED)
7054 continue;
7055
7056 request->channels[i] = chan;
7057 i++;
7058 }
7059 }
7060 }
7061
7062 if (!i) {
7063 err = -EINVAL;
7064 goto out_free;
7065 }
7066
7067 request->n_channels = i;
7068
7069 wdev_lock(wdev);
7070 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7071 struct ieee80211_channel *chan;
7072
7073 if (request->n_channels != 1) {
7074 wdev_unlock(wdev);
7075 err = -EBUSY;
7076 goto out_free;
7077 }
7078
7079 chan = request->channels[0];
7080 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7081 wdev_unlock(wdev);
7082 err = -EBUSY;
7083 goto out_free;
7084 }
7085 }
7086 wdev_unlock(wdev);
7087
7088 i = 0;
7089 if (n_ssids) {
7090 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7091 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7092 err = -EINVAL;
7093 goto out_free;
7094 }
7095 request->ssids[i].ssid_len = nla_len(attr);
7096 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7097 i++;
7098 }
7099 }
7100
7101 if (info->attrs[NL80211_ATTR_IE]) {
7102 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7103 memcpy((void *)request->ie,
7104 nla_data(info->attrs[NL80211_ATTR_IE]),
7105 request->ie_len);
7106 }
7107
7108 for (i = 0; i < NUM_NL80211_BANDS; i++)
7109 if (wiphy->bands[i])
7110 request->rates[i] =
7111 (1 << wiphy->bands[i]->n_bitrates) - 1;
7112
7113 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7114 nla_for_each_nested(attr,
7115 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7116 tmp) {
7117 enum nl80211_band band = nla_type(attr);
7118
7119 if (band < 0 || band >= NUM_NL80211_BANDS) {
7120 err = -EINVAL;
7121 goto out_free;
7122 }
7123
7124 if (!wiphy->bands[band])
7125 continue;
7126
7127 err = ieee80211_get_ratemask(wiphy->bands[band],
7128 nla_data(attr),
7129 nla_len(attr),
7130 &request->rates[band]);
7131 if (err)
7132 goto out_free;
7133 }
7134 }
7135
7136 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7137 if (!wiphy_ext_feature_isset(wiphy,
7138 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7139 err = -EOPNOTSUPP;
7140 goto out_free;
7141 }
7142
7143 request->duration =
7144 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7145 request->duration_mandatory =
7146 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7147 }
7148
7149 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7150 false);
7151 if (err)
7152 goto out_free;
7153
7154 request->no_cck =
7155 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7156
7157 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7158 * BSSID to scan for. This was problematic because that same attribute
7159 * was already used for another purpose (local random MAC address). The
7160 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7161 * compatibility with older userspace components, also use the
7162 * NL80211_ATTR_MAC value here if it can be determined to be used for
7163 * the specific BSSID use case instead of the random MAC address
7164 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7165 */
7166 if (info->attrs[NL80211_ATTR_BSSID])
7167 memcpy(request->bssid,
7168 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7169 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7170 info->attrs[NL80211_ATTR_MAC])
7171 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7172 ETH_ALEN);
7173 else
7174 eth_broadcast_addr(request->bssid);
7175
7176 request->wdev = wdev;
7177 request->wiphy = &rdev->wiphy;
7178 request->scan_start = jiffies;
7179
7180 rdev->scan_req = request;
7181 err = rdev_scan(rdev, request);
7182
7183 if (!err) {
7184 nl80211_send_scan_start(rdev, wdev);
7185 if (wdev->netdev)
7186 dev_hold(wdev->netdev);
7187 } else {
7188 out_free:
7189 rdev->scan_req = NULL;
7190 kfree(request);
7191 }
7192
7193 unlock:
7194 return err;
7195 }
7196
7197 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7198 {
7199 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7200 struct wireless_dev *wdev = info->user_ptr[1];
7201
7202 if (!rdev->ops->abort_scan)
7203 return -EOPNOTSUPP;
7204
7205 if (rdev->scan_msg)
7206 return 0;
7207
7208 if (!rdev->scan_req)
7209 return -ENOENT;
7210
7211 rdev_abort_scan(rdev, wdev);
7212 return 0;
7213 }
7214
7215 static int
7216 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7217 struct cfg80211_sched_scan_request *request,
7218 struct nlattr **attrs)
7219 {
7220 int tmp, err, i = 0;
7221 struct nlattr *attr;
7222
7223 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7224 u32 interval;
7225
7226 /*
7227 * If scan plans are not specified,
7228 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7229 * case one scan plan will be set with the specified scan
7230 * interval and infinite number of iterations.
7231 */
7232 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7233 if (!interval)
7234 return -EINVAL;
7235
7236 request->scan_plans[0].interval =
7237 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7238 if (!request->scan_plans[0].interval)
7239 return -EINVAL;
7240
7241 if (request->scan_plans[0].interval >
7242 wiphy->max_sched_scan_plan_interval)
7243 request->scan_plans[0].interval =
7244 wiphy->max_sched_scan_plan_interval;
7245
7246 return 0;
7247 }
7248
7249 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7250 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7251
7252 if (WARN_ON(i >= n_plans))
7253 return -EINVAL;
7254
7255 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7256 attr, nl80211_plan_policy, NULL);
7257 if (err)
7258 return err;
7259
7260 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7261 return -EINVAL;
7262
7263 request->scan_plans[i].interval =
7264 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7265 if (!request->scan_plans[i].interval ||
7266 request->scan_plans[i].interval >
7267 wiphy->max_sched_scan_plan_interval)
7268 return -EINVAL;
7269
7270 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7271 request->scan_plans[i].iterations =
7272 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7273 if (!request->scan_plans[i].iterations ||
7274 (request->scan_plans[i].iterations >
7275 wiphy->max_sched_scan_plan_iterations))
7276 return -EINVAL;
7277 } else if (i < n_plans - 1) {
7278 /*
7279 * All scan plans but the last one must specify
7280 * a finite number of iterations
7281 */
7282 return -EINVAL;
7283 }
7284
7285 i++;
7286 }
7287
7288 /*
7289 * The last scan plan must not specify the number of
7290 * iterations, it is supposed to run infinitely
7291 */
7292 if (request->scan_plans[n_plans - 1].iterations)
7293 return -EINVAL;
7294
7295 return 0;
7296 }
7297
7298 static struct cfg80211_sched_scan_request *
7299 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7300 struct nlattr **attrs, int max_match_sets)
7301 {
7302 struct cfg80211_sched_scan_request *request;
7303 struct nlattr *attr;
7304 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7305 enum nl80211_band band;
7306 size_t ie_len;
7307 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7308 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7309
7310 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7311 return ERR_PTR(-EINVAL);
7312
7313 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7314 n_channels = validate_scan_freqs(
7315 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7316 if (!n_channels)
7317 return ERR_PTR(-EINVAL);
7318 } else {
7319 n_channels = ieee80211_get_num_supported_channels(wiphy);
7320 }
7321
7322 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7323 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7324 tmp)
7325 n_ssids++;
7326
7327 if (n_ssids > wiphy->max_sched_scan_ssids)
7328 return ERR_PTR(-EINVAL);
7329
7330 /*
7331 * First, count the number of 'real' matchsets. Due to an issue with
7332 * the old implementation, matchsets containing only the RSSI attribute
7333 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7334 * RSSI for all matchsets, rather than their own matchset for reporting
7335 * all APs with a strong RSSI. This is needed to be compatible with
7336 * older userspace that treated a matchset with only the RSSI as the
7337 * global RSSI for all other matchsets - if there are other matchsets.
7338 */
7339 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7340 nla_for_each_nested(attr,
7341 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7342 tmp) {
7343 struct nlattr *rssi;
7344
7345 err = nla_parse_nested(tb,
7346 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7347 attr, nl80211_match_policy,
7348 NULL);
7349 if (err)
7350 return ERR_PTR(err);
7351
7352 /* SSID and BSSID are mutually exclusive */
7353 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7354 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7355 return ERR_PTR(-EINVAL);
7356
7357 /* add other standalone attributes here */
7358 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7359 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7360 n_match_sets++;
7361 continue;
7362 }
7363 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7364 if (rssi)
7365 default_match_rssi = nla_get_s32(rssi);
7366 }
7367 }
7368
7369 /* However, if there's no other matchset, add the RSSI one */
7370 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7371 n_match_sets = 1;
7372
7373 if (n_match_sets > max_match_sets)
7374 return ERR_PTR(-EINVAL);
7375
7376 if (attrs[NL80211_ATTR_IE])
7377 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7378 else
7379 ie_len = 0;
7380
7381 if (ie_len > wiphy->max_sched_scan_ie_len)
7382 return ERR_PTR(-EINVAL);
7383
7384 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7385 /*
7386 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7387 * each scan plan already specifies its own interval
7388 */
7389 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7390 return ERR_PTR(-EINVAL);
7391
7392 nla_for_each_nested(attr,
7393 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7394 n_plans++;
7395 } else {
7396 /*
7397 * The scan interval attribute is kept for backward
7398 * compatibility. If no scan plans are specified and sched scan
7399 * interval is specified, one scan plan will be set with this
7400 * scan interval and infinite number of iterations.
7401 */
7402 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7403 return ERR_PTR(-EINVAL);
7404
7405 n_plans = 1;
7406 }
7407
7408 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7409 return ERR_PTR(-EINVAL);
7410
7411 if (!wiphy_ext_feature_isset(
7412 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7413 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7414 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7415 return ERR_PTR(-EINVAL);
7416
7417 request = kzalloc(sizeof(*request)
7418 + sizeof(*request->ssids) * n_ssids
7419 + sizeof(*request->match_sets) * n_match_sets
7420 + sizeof(*request->scan_plans) * n_plans
7421 + sizeof(*request->channels) * n_channels
7422 + ie_len, GFP_KERNEL);
7423 if (!request)
7424 return ERR_PTR(-ENOMEM);
7425
7426 if (n_ssids)
7427 request->ssids = (void *)&request->channels[n_channels];
7428 request->n_ssids = n_ssids;
7429 if (ie_len) {
7430 if (n_ssids)
7431 request->ie = (void *)(request->ssids + n_ssids);
7432 else
7433 request->ie = (void *)(request->channels + n_channels);
7434 }
7435
7436 if (n_match_sets) {
7437 if (request->ie)
7438 request->match_sets = (void *)(request->ie + ie_len);
7439 else if (n_ssids)
7440 request->match_sets =
7441 (void *)(request->ssids + n_ssids);
7442 else
7443 request->match_sets =
7444 (void *)(request->channels + n_channels);
7445 }
7446 request->n_match_sets = n_match_sets;
7447
7448 if (n_match_sets)
7449 request->scan_plans = (void *)(request->match_sets +
7450 n_match_sets);
7451 else if (request->ie)
7452 request->scan_plans = (void *)(request->ie + ie_len);
7453 else if (n_ssids)
7454 request->scan_plans = (void *)(request->ssids + n_ssids);
7455 else
7456 request->scan_plans = (void *)(request->channels + n_channels);
7457
7458 request->n_scan_plans = n_plans;
7459
7460 i = 0;
7461 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7462 /* user specified, bail out if channel not found */
7463 nla_for_each_nested(attr,
7464 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7465 tmp) {
7466 struct ieee80211_channel *chan;
7467
7468 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7469
7470 if (!chan) {
7471 err = -EINVAL;
7472 goto out_free;
7473 }
7474
7475 /* ignore disabled channels */
7476 if (chan->flags & IEEE80211_CHAN_DISABLED)
7477 continue;
7478
7479 request->channels[i] = chan;
7480 i++;
7481 }
7482 } else {
7483 /* all channels */
7484 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7485 int j;
7486
7487 if (!wiphy->bands[band])
7488 continue;
7489 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7490 struct ieee80211_channel *chan;
7491
7492 chan = &wiphy->bands[band]->channels[j];
7493
7494 if (chan->flags & IEEE80211_CHAN_DISABLED)
7495 continue;
7496
7497 request->channels[i] = chan;
7498 i++;
7499 }
7500 }
7501 }
7502
7503 if (!i) {
7504 err = -EINVAL;
7505 goto out_free;
7506 }
7507
7508 request->n_channels = i;
7509
7510 i = 0;
7511 if (n_ssids) {
7512 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7513 tmp) {
7514 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7515 err = -EINVAL;
7516 goto out_free;
7517 }
7518 request->ssids[i].ssid_len = nla_len(attr);
7519 memcpy(request->ssids[i].ssid, nla_data(attr),
7520 nla_len(attr));
7521 i++;
7522 }
7523 }
7524
7525 i = 0;
7526 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7527 nla_for_each_nested(attr,
7528 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7529 tmp) {
7530 struct nlattr *ssid, *bssid, *rssi;
7531
7532 err = nla_parse_nested(tb,
7533 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7534 attr, nl80211_match_policy,
7535 NULL);
7536 if (err)
7537 goto out_free;
7538 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7539 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7540 if (ssid || bssid) {
7541 if (WARN_ON(i >= n_match_sets)) {
7542 /* this indicates a programming error,
7543 * the loop above should have verified
7544 * things properly
7545 */
7546 err = -EINVAL;
7547 goto out_free;
7548 }
7549
7550 if (ssid) {
7551 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7552 err = -EINVAL;
7553 goto out_free;
7554 }
7555 memcpy(request->match_sets[i].ssid.ssid,
7556 nla_data(ssid), nla_len(ssid));
7557 request->match_sets[i].ssid.ssid_len =
7558 nla_len(ssid);
7559 }
7560 if (bssid) {
7561 if (nla_len(bssid) != ETH_ALEN) {
7562 err = -EINVAL;
7563 goto out_free;
7564 }
7565 memcpy(request->match_sets[i].bssid,
7566 nla_data(bssid), ETH_ALEN);
7567 }
7568
7569 /* special attribute - old implementation w/a */
7570 request->match_sets[i].rssi_thold =
7571 default_match_rssi;
7572 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7573 if (rssi)
7574 request->match_sets[i].rssi_thold =
7575 nla_get_s32(rssi);
7576 }
7577 i++;
7578 }
7579
7580 /* there was no other matchset, so the RSSI one is alone */
7581 if (i == 0 && n_match_sets)
7582 request->match_sets[0].rssi_thold = default_match_rssi;
7583
7584 request->min_rssi_thold = INT_MAX;
7585 for (i = 0; i < n_match_sets; i++)
7586 request->min_rssi_thold =
7587 min(request->match_sets[i].rssi_thold,
7588 request->min_rssi_thold);
7589 } else {
7590 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7591 }
7592
7593 if (ie_len) {
7594 request->ie_len = ie_len;
7595 memcpy((void *)request->ie,
7596 nla_data(attrs[NL80211_ATTR_IE]),
7597 request->ie_len);
7598 }
7599
7600 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7601 if (err)
7602 goto out_free;
7603
7604 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7605 request->delay =
7606 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7607
7608 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7609 request->relative_rssi = nla_get_s8(
7610 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7611 request->relative_rssi_set = true;
7612 }
7613
7614 if (request->relative_rssi_set &&
7615 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7616 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7617
7618 rssi_adjust = nla_data(
7619 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7620 request->rssi_adjust.band = rssi_adjust->band;
7621 request->rssi_adjust.delta = rssi_adjust->delta;
7622 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7623 err = -EINVAL;
7624 goto out_free;
7625 }
7626 }
7627
7628 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7629 if (err)
7630 goto out_free;
7631
7632 request->scan_start = jiffies;
7633
7634 return request;
7635
7636 out_free:
7637 kfree(request);
7638 return ERR_PTR(err);
7639 }
7640
7641 static int nl80211_start_sched_scan(struct sk_buff *skb,
7642 struct genl_info *info)
7643 {
7644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7645 struct net_device *dev = info->user_ptr[1];
7646 struct wireless_dev *wdev = dev->ieee80211_ptr;
7647 struct cfg80211_sched_scan_request *sched_scan_req;
7648 bool want_multi;
7649 int err;
7650
7651 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7652 return -EOPNOTSUPP;
7653
7654 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7655 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7656 if (err)
7657 return err;
7658
7659 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7660 info->attrs,
7661 rdev->wiphy.max_match_sets);
7662
7663 err = PTR_ERR_OR_ZERO(sched_scan_req);
7664 if (err)
7665 goto out_err;
7666
7667 /* leave request id zero for legacy request
7668 * or if driver does not support multi-scheduled scan
7669 */
7670 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7671 while (!sched_scan_req->reqid)
7672 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7673 }
7674
7675 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7676 if (err)
7677 goto out_free;
7678
7679 sched_scan_req->dev = dev;
7680 sched_scan_req->wiphy = &rdev->wiphy;
7681
7682 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7683 sched_scan_req->owner_nlportid = info->snd_portid;
7684
7685 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7686
7687 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7688 return 0;
7689
7690 out_free:
7691 kfree(sched_scan_req);
7692 out_err:
7693 return err;
7694 }
7695
7696 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7697 struct genl_info *info)
7698 {
7699 struct cfg80211_sched_scan_request *req;
7700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7701 u64 cookie;
7702
7703 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7704 return -EOPNOTSUPP;
7705
7706 if (info->attrs[NL80211_ATTR_COOKIE]) {
7707 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7708 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7709 }
7710
7711 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7712 struct cfg80211_sched_scan_request,
7713 list);
7714 if (!req || req->reqid ||
7715 (req->owner_nlportid &&
7716 req->owner_nlportid != info->snd_portid))
7717 return -ENOENT;
7718
7719 return cfg80211_stop_sched_scan_req(rdev, req, false);
7720 }
7721
7722 static int nl80211_start_radar_detection(struct sk_buff *skb,
7723 struct genl_info *info)
7724 {
7725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7726 struct net_device *dev = info->user_ptr[1];
7727 struct wireless_dev *wdev = dev->ieee80211_ptr;
7728 struct wiphy *wiphy = wdev->wiphy;
7729 struct cfg80211_chan_def chandef;
7730 enum nl80211_dfs_regions dfs_region;
7731 unsigned int cac_time_ms;
7732 int err;
7733
7734 dfs_region = reg_get_dfs_region(wiphy);
7735 if (dfs_region == NL80211_DFS_UNSET)
7736 return -EINVAL;
7737
7738 err = nl80211_parse_chandef(rdev, info, &chandef);
7739 if (err)
7740 return err;
7741
7742 if (netif_carrier_ok(dev))
7743 return -EBUSY;
7744
7745 if (wdev->cac_started)
7746 return -EBUSY;
7747
7748 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7749 if (err < 0)
7750 return err;
7751
7752 if (err == 0)
7753 return -EINVAL;
7754
7755 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7756 return -EINVAL;
7757
7758 /* CAC start is offloaded to HW and can't be started manually */
7759 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7760 return -EOPNOTSUPP;
7761
7762 if (!rdev->ops->start_radar_detection)
7763 return -EOPNOTSUPP;
7764
7765 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7766 if (WARN_ON(!cac_time_ms))
7767 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7768
7769 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7770 if (!err) {
7771 wdev->chandef = chandef;
7772 wdev->cac_started = true;
7773 wdev->cac_start_time = jiffies;
7774 wdev->cac_time_ms = cac_time_ms;
7775 }
7776 return err;
7777 }
7778
7779 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7780 {
7781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7782 struct net_device *dev = info->user_ptr[1];
7783 struct wireless_dev *wdev = dev->ieee80211_ptr;
7784 struct cfg80211_csa_settings params;
7785 /* csa_attrs is defined static to avoid waste of stack size - this
7786 * function is called under RTNL lock, so this should not be a problem.
7787 */
7788 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7789 int err;
7790 bool need_new_beacon = false;
7791 bool need_handle_dfs_flag = true;
7792 int len, i;
7793 u32 cs_count;
7794
7795 if (!rdev->ops->channel_switch ||
7796 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7797 return -EOPNOTSUPP;
7798
7799 switch (dev->ieee80211_ptr->iftype) {
7800 case NL80211_IFTYPE_AP:
7801 case NL80211_IFTYPE_P2P_GO:
7802 need_new_beacon = true;
7803 /* For all modes except AP the handle_dfs flag needs to be
7804 * supplied to tell the kernel that userspace will handle radar
7805 * events when they happen. Otherwise a switch to a channel
7806 * requiring DFS will be rejected.
7807 */
7808 need_handle_dfs_flag = false;
7809
7810 /* useless if AP is not running */
7811 if (!wdev->beacon_interval)
7812 return -ENOTCONN;
7813 break;
7814 case NL80211_IFTYPE_ADHOC:
7815 if (!wdev->ssid_len)
7816 return -ENOTCONN;
7817 break;
7818 case NL80211_IFTYPE_MESH_POINT:
7819 if (!wdev->mesh_id_len)
7820 return -ENOTCONN;
7821 break;
7822 default:
7823 return -EOPNOTSUPP;
7824 }
7825
7826 memset(&params, 0, sizeof(params));
7827
7828 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7829 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7830 return -EINVAL;
7831
7832 /* only important for AP, IBSS and mesh create IEs internally */
7833 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7834 return -EINVAL;
7835
7836 /* Even though the attribute is u32, the specification says
7837 * u8, so let's make sure we don't overflow.
7838 */
7839 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7840 if (cs_count > 255)
7841 return -EINVAL;
7842
7843 params.count = cs_count;
7844
7845 if (!need_new_beacon)
7846 goto skip_beacons;
7847
7848 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7849 if (err)
7850 return err;
7851
7852 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7853 info->attrs[NL80211_ATTR_CSA_IES],
7854 nl80211_policy, info->extack);
7855 if (err)
7856 return err;
7857
7858 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7859 if (err)
7860 return err;
7861
7862 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7863 return -EINVAL;
7864
7865 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7866 if (!len || (len % sizeof(u16)))
7867 return -EINVAL;
7868
7869 params.n_counter_offsets_beacon = len / sizeof(u16);
7870 if (rdev->wiphy.max_num_csa_counters &&
7871 (params.n_counter_offsets_beacon >
7872 rdev->wiphy.max_num_csa_counters))
7873 return -EINVAL;
7874
7875 params.counter_offsets_beacon =
7876 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7877
7878 /* sanity checks - counters should fit and be the same */
7879 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7880 u16 offset = params.counter_offsets_beacon[i];
7881
7882 if (offset >= params.beacon_csa.tail_len)
7883 return -EINVAL;
7884
7885 if (params.beacon_csa.tail[offset] != params.count)
7886 return -EINVAL;
7887 }
7888
7889 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7890 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7891 if (!len || (len % sizeof(u16)))
7892 return -EINVAL;
7893
7894 params.n_counter_offsets_presp = len / sizeof(u16);
7895 if (rdev->wiphy.max_num_csa_counters &&
7896 (params.n_counter_offsets_presp >
7897 rdev->wiphy.max_num_csa_counters))
7898 return -EINVAL;
7899
7900 params.counter_offsets_presp =
7901 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7902
7903 /* sanity checks - counters should fit and be the same */
7904 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7905 u16 offset = params.counter_offsets_presp[i];
7906
7907 if (offset >= params.beacon_csa.probe_resp_len)
7908 return -EINVAL;
7909
7910 if (params.beacon_csa.probe_resp[offset] !=
7911 params.count)
7912 return -EINVAL;
7913 }
7914 }
7915
7916 skip_beacons:
7917 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7918 if (err)
7919 return err;
7920
7921 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7922 wdev->iftype))
7923 return -EINVAL;
7924
7925 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7926 &params.chandef,
7927 wdev->iftype);
7928 if (err < 0)
7929 return err;
7930
7931 if (err > 0) {
7932 params.radar_required = true;
7933 if (need_handle_dfs_flag &&
7934 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7935 return -EINVAL;
7936 }
7937 }
7938
7939 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7940 params.block_tx = true;
7941
7942 wdev_lock(wdev);
7943 err = rdev_channel_switch(rdev, dev, &params);
7944 wdev_unlock(wdev);
7945
7946 return err;
7947 }
7948
7949 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7950 u32 seq, int flags,
7951 struct cfg80211_registered_device *rdev,
7952 struct wireless_dev *wdev,
7953 struct cfg80211_internal_bss *intbss)
7954 {
7955 struct cfg80211_bss *res = &intbss->pub;
7956 const struct cfg80211_bss_ies *ies;
7957 void *hdr;
7958 struct nlattr *bss;
7959
7960 ASSERT_WDEV_LOCK(wdev);
7961
7962 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7963 NL80211_CMD_NEW_SCAN_RESULTS);
7964 if (!hdr)
7965 return -1;
7966
7967 genl_dump_check_consistent(cb, hdr);
7968
7969 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7970 goto nla_put_failure;
7971 if (wdev->netdev &&
7972 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7973 goto nla_put_failure;
7974 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7975 NL80211_ATTR_PAD))
7976 goto nla_put_failure;
7977
7978 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7979 if (!bss)
7980 goto nla_put_failure;
7981 if ((!is_zero_ether_addr(res->bssid) &&
7982 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7983 goto nla_put_failure;
7984
7985 rcu_read_lock();
7986 /* indicate whether we have probe response data or not */
7987 if (rcu_access_pointer(res->proberesp_ies) &&
7988 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7989 goto fail_unlock_rcu;
7990
7991 /* this pointer prefers to be pointed to probe response data
7992 * but is always valid
7993 */
7994 ies = rcu_dereference(res->ies);
7995 if (ies) {
7996 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7997 NL80211_BSS_PAD))
7998 goto fail_unlock_rcu;
7999 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8000 ies->len, ies->data))
8001 goto fail_unlock_rcu;
8002 }
8003
8004 /* and this pointer is always (unless driver didn't know) beacon data */
8005 ies = rcu_dereference(res->beacon_ies);
8006 if (ies && ies->from_beacon) {
8007 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8008 NL80211_BSS_PAD))
8009 goto fail_unlock_rcu;
8010 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8011 ies->len, ies->data))
8012 goto fail_unlock_rcu;
8013 }
8014 rcu_read_unlock();
8015
8016 if (res->beacon_interval &&
8017 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8018 goto nla_put_failure;
8019 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8020 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8021 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8022 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8023 jiffies_to_msecs(jiffies - intbss->ts)))
8024 goto nla_put_failure;
8025
8026 if (intbss->parent_tsf &&
8027 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8028 intbss->parent_tsf, NL80211_BSS_PAD) ||
8029 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8030 intbss->parent_bssid)))
8031 goto nla_put_failure;
8032
8033 if (intbss->ts_boottime &&
8034 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8035 intbss->ts_boottime, NL80211_BSS_PAD))
8036 goto nla_put_failure;
8037
8038 if (!nl80211_put_signal(msg, intbss->pub.chains,
8039 intbss->pub.chain_signal,
8040 NL80211_BSS_CHAIN_SIGNAL))
8041 goto nla_put_failure;
8042
8043 switch (rdev->wiphy.signal_type) {
8044 case CFG80211_SIGNAL_TYPE_MBM:
8045 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8046 goto nla_put_failure;
8047 break;
8048 case CFG80211_SIGNAL_TYPE_UNSPEC:
8049 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8050 goto nla_put_failure;
8051 break;
8052 default:
8053 break;
8054 }
8055
8056 switch (wdev->iftype) {
8057 case NL80211_IFTYPE_P2P_CLIENT:
8058 case NL80211_IFTYPE_STATION:
8059 if (intbss == wdev->current_bss &&
8060 nla_put_u32(msg, NL80211_BSS_STATUS,
8061 NL80211_BSS_STATUS_ASSOCIATED))
8062 goto nla_put_failure;
8063 break;
8064 case NL80211_IFTYPE_ADHOC:
8065 if (intbss == wdev->current_bss &&
8066 nla_put_u32(msg, NL80211_BSS_STATUS,
8067 NL80211_BSS_STATUS_IBSS_JOINED))
8068 goto nla_put_failure;
8069 break;
8070 default:
8071 break;
8072 }
8073
8074 nla_nest_end(msg, bss);
8075
8076 genlmsg_end(msg, hdr);
8077 return 0;
8078
8079 fail_unlock_rcu:
8080 rcu_read_unlock();
8081 nla_put_failure:
8082 genlmsg_cancel(msg, hdr);
8083 return -EMSGSIZE;
8084 }
8085
8086 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8087 {
8088 struct cfg80211_registered_device *rdev;
8089 struct cfg80211_internal_bss *scan;
8090 struct wireless_dev *wdev;
8091 int start = cb->args[2], idx = 0;
8092 int err;
8093
8094 rtnl_lock();
8095 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8096 if (err) {
8097 rtnl_unlock();
8098 return err;
8099 }
8100
8101 wdev_lock(wdev);
8102 spin_lock_bh(&rdev->bss_lock);
8103
8104 /*
8105 * dump_scan will be called multiple times to break up the scan results
8106 * into multiple messages. It is unlikely that any more bss-es will be
8107 * expired after the first call, so only call only call this on the
8108 * first dump_scan invocation.
8109 */
8110 if (start == 0)
8111 cfg80211_bss_expire(rdev);
8112
8113 cb->seq = rdev->bss_generation;
8114
8115 list_for_each_entry(scan, &rdev->bss_list, list) {
8116 if (++idx <= start)
8117 continue;
8118 if (nl80211_send_bss(skb, cb,
8119 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8120 rdev, wdev, scan) < 0) {
8121 idx--;
8122 break;
8123 }
8124 }
8125
8126 spin_unlock_bh(&rdev->bss_lock);
8127 wdev_unlock(wdev);
8128
8129 cb->args[2] = idx;
8130 rtnl_unlock();
8131
8132 return skb->len;
8133 }
8134
8135 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8136 int flags, struct net_device *dev,
8137 bool allow_radio_stats,
8138 struct survey_info *survey)
8139 {
8140 void *hdr;
8141 struct nlattr *infoattr;
8142
8143 /* skip radio stats if userspace didn't request them */
8144 if (!survey->channel && !allow_radio_stats)
8145 return 0;
8146
8147 hdr = nl80211hdr_put(msg, portid, seq, flags,
8148 NL80211_CMD_NEW_SURVEY_RESULTS);
8149 if (!hdr)
8150 return -ENOMEM;
8151
8152 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8153 goto nla_put_failure;
8154
8155 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8156 if (!infoattr)
8157 goto nla_put_failure;
8158
8159 if (survey->channel &&
8160 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8161 survey->channel->center_freq))
8162 goto nla_put_failure;
8163
8164 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8165 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8166 goto nla_put_failure;
8167 if ((survey->filled & SURVEY_INFO_IN_USE) &&
8168 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8169 goto nla_put_failure;
8170 if ((survey->filled & SURVEY_INFO_TIME) &&
8171 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8172 survey->time, NL80211_SURVEY_INFO_PAD))
8173 goto nla_put_failure;
8174 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8175 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8176 survey->time_busy, NL80211_SURVEY_INFO_PAD))
8177 goto nla_put_failure;
8178 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8179 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8180 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8181 goto nla_put_failure;
8182 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8183 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8184 survey->time_rx, NL80211_SURVEY_INFO_PAD))
8185 goto nla_put_failure;
8186 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8187 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8188 survey->time_tx, NL80211_SURVEY_INFO_PAD))
8189 goto nla_put_failure;
8190 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8191 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8192 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8193 goto nla_put_failure;
8194
8195 nla_nest_end(msg, infoattr);
8196
8197 genlmsg_end(msg, hdr);
8198 return 0;
8199
8200 nla_put_failure:
8201 genlmsg_cancel(msg, hdr);
8202 return -EMSGSIZE;
8203 }
8204
8205 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8206 {
8207 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8208 struct survey_info survey;
8209 struct cfg80211_registered_device *rdev;
8210 struct wireless_dev *wdev;
8211 int survey_idx = cb->args[2];
8212 int res;
8213 bool radio_stats;
8214
8215 rtnl_lock();
8216 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8217 if (res)
8218 goto out_err;
8219
8220 /* prepare_wdev_dump parsed the attributes */
8221 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8222
8223 if (!wdev->netdev) {
8224 res = -EINVAL;
8225 goto out_err;
8226 }
8227
8228 if (!rdev->ops->dump_survey) {
8229 res = -EOPNOTSUPP;
8230 goto out_err;
8231 }
8232
8233 while (1) {
8234 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8235 if (res == -ENOENT)
8236 break;
8237 if (res)
8238 goto out_err;
8239
8240 /* don't send disabled channels, but do send non-channel data */
8241 if (survey.channel &&
8242 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8243 survey_idx++;
8244 continue;
8245 }
8246
8247 if (nl80211_send_survey(skb,
8248 NETLINK_CB(cb->skb).portid,
8249 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8250 wdev->netdev, radio_stats, &survey) < 0)
8251 goto out;
8252 survey_idx++;
8253 }
8254
8255 out:
8256 cb->args[2] = survey_idx;
8257 res = skb->len;
8258 out_err:
8259 rtnl_unlock();
8260 return res;
8261 }
8262
8263 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8264 {
8265 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8266 NL80211_WPA_VERSION_2));
8267 }
8268
8269 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8270 {
8271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8272 struct net_device *dev = info->user_ptr[1];
8273 struct ieee80211_channel *chan;
8274 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8275 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8276 enum nl80211_auth_type auth_type;
8277 struct key_parse key;
8278 bool local_state_change;
8279
8280 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8281 return -EINVAL;
8282
8283 if (!info->attrs[NL80211_ATTR_MAC])
8284 return -EINVAL;
8285
8286 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8287 return -EINVAL;
8288
8289 if (!info->attrs[NL80211_ATTR_SSID])
8290 return -EINVAL;
8291
8292 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8293 return -EINVAL;
8294
8295 err = nl80211_parse_key(info, &key);
8296 if (err)
8297 return err;
8298
8299 if (key.idx >= 0) {
8300 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8301 return -EINVAL;
8302 if (!key.p.key || !key.p.key_len)
8303 return -EINVAL;
8304 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8305 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8306 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8307 key.p.key_len != WLAN_KEY_LEN_WEP104))
8308 return -EINVAL;
8309 if (key.idx > 3)
8310 return -EINVAL;
8311 } else {
8312 key.p.key_len = 0;
8313 key.p.key = NULL;
8314 }
8315
8316 if (key.idx >= 0) {
8317 int i;
8318 bool ok = false;
8319
8320 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8321 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8322 ok = true;
8323 break;
8324 }
8325 }
8326 if (!ok)
8327 return -EINVAL;
8328 }
8329
8330 if (!rdev->ops->auth)
8331 return -EOPNOTSUPP;
8332
8333 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8334 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8335 return -EOPNOTSUPP;
8336
8337 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8338 chan = nl80211_get_valid_chan(&rdev->wiphy,
8339 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8340 if (!chan)
8341 return -EINVAL;
8342
8343 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8344 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8345
8346 if (info->attrs[NL80211_ATTR_IE]) {
8347 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8348 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8349 }
8350
8351 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8352 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8353 return -EINVAL;
8354
8355 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8356 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8357 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8358 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8359 !info->attrs[NL80211_ATTR_AUTH_DATA])
8360 return -EINVAL;
8361
8362 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8363 if (auth_type != NL80211_AUTHTYPE_SAE &&
8364 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8365 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8366 auth_type != NL80211_AUTHTYPE_FILS_PK)
8367 return -EINVAL;
8368 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8369 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8370 /* need to include at least Auth Transaction and Status Code */
8371 if (auth_data_len < 4)
8372 return -EINVAL;
8373 }
8374
8375 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8376
8377 /*
8378 * Since we no longer track auth state, ignore
8379 * requests to only change local state.
8380 */
8381 if (local_state_change)
8382 return 0;
8383
8384 wdev_lock(dev->ieee80211_ptr);
8385 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8386 ssid, ssid_len, ie, ie_len,
8387 key.p.key, key.p.key_len, key.idx,
8388 auth_data, auth_data_len);
8389 wdev_unlock(dev->ieee80211_ptr);
8390 return err;
8391 }
8392
8393 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8394 struct genl_info *info)
8395 {
8396 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8397 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8398 return -EINVAL;
8399 }
8400
8401 if (!rdev->ops->tx_control_port ||
8402 !wiphy_ext_feature_isset(&rdev->wiphy,
8403 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8404 return -EOPNOTSUPP;
8405
8406 return 0;
8407 }
8408
8409 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8410 struct genl_info *info,
8411 struct cfg80211_crypto_settings *settings,
8412 int cipher_limit)
8413 {
8414 memset(settings, 0, sizeof(*settings));
8415
8416 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8417
8418 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8419 u16 proto;
8420
8421 proto = nla_get_u16(
8422 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8423 settings->control_port_ethertype = cpu_to_be16(proto);
8424 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8425 proto != ETH_P_PAE)
8426 return -EINVAL;
8427 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8428 settings->control_port_no_encrypt = true;
8429 } else
8430 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8431
8432 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8433 int r = validate_pae_over_nl80211(rdev, info);
8434
8435 if (r < 0)
8436 return r;
8437
8438 settings->control_port_over_nl80211 = true;
8439 }
8440
8441 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8442 void *data;
8443 int len, i;
8444
8445 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8446 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8447 settings->n_ciphers_pairwise = len / sizeof(u32);
8448
8449 if (len % sizeof(u32))
8450 return -EINVAL;
8451
8452 if (settings->n_ciphers_pairwise > cipher_limit)
8453 return -EINVAL;
8454
8455 memcpy(settings->ciphers_pairwise, data, len);
8456
8457 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8458 if (!cfg80211_supported_cipher_suite(
8459 &rdev->wiphy,
8460 settings->ciphers_pairwise[i]))
8461 return -EINVAL;
8462 }
8463
8464 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8465 settings->cipher_group =
8466 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8467 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8468 settings->cipher_group))
8469 return -EINVAL;
8470 }
8471
8472 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8473 settings->wpa_versions =
8474 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8475 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8476 return -EINVAL;
8477 }
8478
8479 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8480 void *data;
8481 int len;
8482
8483 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8484 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8485 settings->n_akm_suites = len / sizeof(u32);
8486
8487 if (len % sizeof(u32))
8488 return -EINVAL;
8489
8490 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8491 return -EINVAL;
8492
8493 memcpy(settings->akm_suites, data, len);
8494 }
8495
8496 if (info->attrs[NL80211_ATTR_PMK]) {
8497 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8498 return -EINVAL;
8499 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8500 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8501 return -EINVAL;
8502 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8503 }
8504
8505 return 0;
8506 }
8507
8508 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8509 {
8510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8511 struct net_device *dev = info->user_ptr[1];
8512 struct ieee80211_channel *chan;
8513 struct cfg80211_assoc_request req = {};
8514 const u8 *bssid, *ssid;
8515 int err, ssid_len = 0;
8516
8517 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8518 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8519 return -EPERM;
8520
8521 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8522 return -EINVAL;
8523
8524 if (!info->attrs[NL80211_ATTR_MAC] ||
8525 !info->attrs[NL80211_ATTR_SSID] ||
8526 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8527 return -EINVAL;
8528
8529 if (!rdev->ops->assoc)
8530 return -EOPNOTSUPP;
8531
8532 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8533 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8534 return -EOPNOTSUPP;
8535
8536 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8537
8538 chan = nl80211_get_valid_chan(&rdev->wiphy,
8539 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8540 if (!chan)
8541 return -EINVAL;
8542
8543 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8544 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8545
8546 if (info->attrs[NL80211_ATTR_IE]) {
8547 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8548 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8549 }
8550
8551 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8552 enum nl80211_mfp mfp =
8553 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8554 if (mfp == NL80211_MFP_REQUIRED)
8555 req.use_mfp = true;
8556 else if (mfp != NL80211_MFP_NO)
8557 return -EINVAL;
8558 }
8559
8560 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8561 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8562
8563 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8564 req.flags |= ASSOC_REQ_DISABLE_HT;
8565
8566 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8567 memcpy(&req.ht_capa_mask,
8568 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8569 sizeof(req.ht_capa_mask));
8570
8571 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8572 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8573 return -EINVAL;
8574 memcpy(&req.ht_capa,
8575 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8576 sizeof(req.ht_capa));
8577 }
8578
8579 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8580 req.flags |= ASSOC_REQ_DISABLE_VHT;
8581
8582 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8583 memcpy(&req.vht_capa_mask,
8584 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8585 sizeof(req.vht_capa_mask));
8586
8587 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8588 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8589 return -EINVAL;
8590 memcpy(&req.vht_capa,
8591 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8592 sizeof(req.vht_capa));
8593 }
8594
8595 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8596 if (!((rdev->wiphy.features &
8597 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8598 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8599 !wiphy_ext_feature_isset(&rdev->wiphy,
8600 NL80211_EXT_FEATURE_RRM))
8601 return -EINVAL;
8602 req.flags |= ASSOC_REQ_USE_RRM;
8603 }
8604
8605 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8606 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8607 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8608 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8609 return -EINVAL;
8610 req.fils_nonces =
8611 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8612 }
8613
8614 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8615 if (!err) {
8616 wdev_lock(dev->ieee80211_ptr);
8617
8618 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8619 ssid, ssid_len, &req);
8620
8621 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8622 dev->ieee80211_ptr->conn_owner_nlportid =
8623 info->snd_portid;
8624 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8625 bssid, ETH_ALEN);
8626 }
8627
8628 wdev_unlock(dev->ieee80211_ptr);
8629 }
8630
8631 return err;
8632 }
8633
8634 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8635 {
8636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8637 struct net_device *dev = info->user_ptr[1];
8638 const u8 *ie = NULL, *bssid;
8639 int ie_len = 0, err;
8640 u16 reason_code;
8641 bool local_state_change;
8642
8643 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8644 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8645 return -EPERM;
8646
8647 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8648 return -EINVAL;
8649
8650 if (!info->attrs[NL80211_ATTR_MAC])
8651 return -EINVAL;
8652
8653 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8654 return -EINVAL;
8655
8656 if (!rdev->ops->deauth)
8657 return -EOPNOTSUPP;
8658
8659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8660 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8661 return -EOPNOTSUPP;
8662
8663 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8664
8665 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8666 if (reason_code == 0) {
8667 /* Reason Code 0 is reserved */
8668 return -EINVAL;
8669 }
8670
8671 if (info->attrs[NL80211_ATTR_IE]) {
8672 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8673 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8674 }
8675
8676 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8677
8678 wdev_lock(dev->ieee80211_ptr);
8679 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8680 local_state_change);
8681 wdev_unlock(dev->ieee80211_ptr);
8682 return err;
8683 }
8684
8685 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8686 {
8687 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8688 struct net_device *dev = info->user_ptr[1];
8689 const u8 *ie = NULL, *bssid;
8690 int ie_len = 0, err;
8691 u16 reason_code;
8692 bool local_state_change;
8693
8694 if (dev->ieee80211_ptr->conn_owner_nlportid &&
8695 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8696 return -EPERM;
8697
8698 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8699 return -EINVAL;
8700
8701 if (!info->attrs[NL80211_ATTR_MAC])
8702 return -EINVAL;
8703
8704 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8705 return -EINVAL;
8706
8707 if (!rdev->ops->disassoc)
8708 return -EOPNOTSUPP;
8709
8710 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8711 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8712 return -EOPNOTSUPP;
8713
8714 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8715
8716 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8717 if (reason_code == 0) {
8718 /* Reason Code 0 is reserved */
8719 return -EINVAL;
8720 }
8721
8722 if (info->attrs[NL80211_ATTR_IE]) {
8723 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8724 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8725 }
8726
8727 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8728
8729 wdev_lock(dev->ieee80211_ptr);
8730 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8731 local_state_change);
8732 wdev_unlock(dev->ieee80211_ptr);
8733 return err;
8734 }
8735
8736 static bool
8737 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8738 int mcast_rate[NUM_NL80211_BANDS],
8739 int rateval)
8740 {
8741 struct wiphy *wiphy = &rdev->wiphy;
8742 bool found = false;
8743 int band, i;
8744
8745 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8746 struct ieee80211_supported_band *sband;
8747
8748 sband = wiphy->bands[band];
8749 if (!sband)
8750 continue;
8751
8752 for (i = 0; i < sband->n_bitrates; i++) {
8753 if (sband->bitrates[i].bitrate == rateval) {
8754 mcast_rate[band] = i + 1;
8755 found = true;
8756 break;
8757 }
8758 }
8759 }
8760
8761 return found;
8762 }
8763
8764 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8765 {
8766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8767 struct net_device *dev = info->user_ptr[1];
8768 struct cfg80211_ibss_params ibss;
8769 struct wiphy *wiphy;
8770 struct cfg80211_cached_keys *connkeys = NULL;
8771 int err;
8772
8773 memset(&ibss, 0, sizeof(ibss));
8774
8775 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8776 return -EINVAL;
8777
8778 if (!info->attrs[NL80211_ATTR_SSID] ||
8779 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8780 return -EINVAL;
8781
8782 ibss.beacon_interval = 100;
8783
8784 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8785 ibss.beacon_interval =
8786 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8787
8788 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8789 ibss.beacon_interval);
8790 if (err)
8791 return err;
8792
8793 if (!rdev->ops->join_ibss)
8794 return -EOPNOTSUPP;
8795
8796 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8797 return -EOPNOTSUPP;
8798
8799 wiphy = &rdev->wiphy;
8800
8801 if (info->attrs[NL80211_ATTR_MAC]) {
8802 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8803
8804 if (!is_valid_ether_addr(ibss.bssid))
8805 return -EINVAL;
8806 }
8807 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8808 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8809
8810 if (info->attrs[NL80211_ATTR_IE]) {
8811 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8812 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8813 }
8814
8815 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8816 if (err)
8817 return err;
8818
8819 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8820 NL80211_IFTYPE_ADHOC))
8821 return -EINVAL;
8822
8823 switch (ibss.chandef.width) {
8824 case NL80211_CHAN_WIDTH_5:
8825 case NL80211_CHAN_WIDTH_10:
8826 case NL80211_CHAN_WIDTH_20_NOHT:
8827 break;
8828 case NL80211_CHAN_WIDTH_20:
8829 case NL80211_CHAN_WIDTH_40:
8830 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8831 return -EINVAL;
8832 break;
8833 case NL80211_CHAN_WIDTH_80:
8834 case NL80211_CHAN_WIDTH_80P80:
8835 case NL80211_CHAN_WIDTH_160:
8836 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8837 return -EINVAL;
8838 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8839 NL80211_EXT_FEATURE_VHT_IBSS))
8840 return -EINVAL;
8841 break;
8842 default:
8843 return -EINVAL;
8844 }
8845
8846 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8847 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8848
8849 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8850 u8 *rates =
8851 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8852 int n_rates =
8853 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8854 struct ieee80211_supported_band *sband =
8855 wiphy->bands[ibss.chandef.chan->band];
8856
8857 err = ieee80211_get_ratemask(sband, rates, n_rates,
8858 &ibss.basic_rates);
8859 if (err)
8860 return err;
8861 }
8862
8863 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8864 memcpy(&ibss.ht_capa_mask,
8865 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8866 sizeof(ibss.ht_capa_mask));
8867
8868 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8869 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8870 return -EINVAL;
8871 memcpy(&ibss.ht_capa,
8872 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8873 sizeof(ibss.ht_capa));
8874 }
8875
8876 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8877 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8878 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8879 return -EINVAL;
8880
8881 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8882 bool no_ht = false;
8883
8884 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8885 if (IS_ERR(connkeys))
8886 return PTR_ERR(connkeys);
8887
8888 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8889 no_ht) {
8890 kzfree(connkeys);
8891 return -EINVAL;
8892 }
8893 }
8894
8895 ibss.control_port =
8896 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8897
8898 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8899 int r = validate_pae_over_nl80211(rdev, info);
8900
8901 if (r < 0)
8902 return r;
8903
8904 ibss.control_port_over_nl80211 = true;
8905 }
8906
8907 ibss.userspace_handles_dfs =
8908 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8909
8910 wdev_lock(dev->ieee80211_ptr);
8911 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8912 if (err)
8913 kzfree(connkeys);
8914 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8915 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8916 wdev_unlock(dev->ieee80211_ptr);
8917
8918 return err;
8919 }
8920
8921 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8922 {
8923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8924 struct net_device *dev = info->user_ptr[1];
8925
8926 if (!rdev->ops->leave_ibss)
8927 return -EOPNOTSUPP;
8928
8929 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8930 return -EOPNOTSUPP;
8931
8932 return cfg80211_leave_ibss(rdev, dev, false);
8933 }
8934
8935 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8936 {
8937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8938 struct net_device *dev = info->user_ptr[1];
8939 int mcast_rate[NUM_NL80211_BANDS];
8940 u32 nla_rate;
8941 int err;
8942
8943 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8944 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8945 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8946 return -EOPNOTSUPP;
8947
8948 if (!rdev->ops->set_mcast_rate)
8949 return -EOPNOTSUPP;
8950
8951 memset(mcast_rate, 0, sizeof(mcast_rate));
8952
8953 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8954 return -EINVAL;
8955
8956 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8957 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8958 return -EINVAL;
8959
8960 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8961
8962 return err;
8963 }
8964
8965 static struct sk_buff *
8966 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8967 struct wireless_dev *wdev, int approxlen,
8968 u32 portid, u32 seq, enum nl80211_commands cmd,
8969 enum nl80211_attrs attr,
8970 const struct nl80211_vendor_cmd_info *info,
8971 gfp_t gfp)
8972 {
8973 struct sk_buff *skb;
8974 void *hdr;
8975 struct nlattr *data;
8976
8977 skb = nlmsg_new(approxlen + 100, gfp);
8978 if (!skb)
8979 return NULL;
8980
8981 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8982 if (!hdr) {
8983 kfree_skb(skb);
8984 return NULL;
8985 }
8986
8987 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8988 goto nla_put_failure;
8989
8990 if (info) {
8991 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8992 info->vendor_id))
8993 goto nla_put_failure;
8994 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8995 info->subcmd))
8996 goto nla_put_failure;
8997 }
8998
8999 if (wdev) {
9000 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9001 wdev_id(wdev), NL80211_ATTR_PAD))
9002 goto nla_put_failure;
9003 if (wdev->netdev &&
9004 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9005 wdev->netdev->ifindex))
9006 goto nla_put_failure;
9007 }
9008
9009 data = nla_nest_start(skb, attr);
9010 if (!data)
9011 goto nla_put_failure;
9012
9013 ((void **)skb->cb)[0] = rdev;
9014 ((void **)skb->cb)[1] = hdr;
9015 ((void **)skb->cb)[2] = data;
9016
9017 return skb;
9018
9019 nla_put_failure:
9020 kfree_skb(skb);
9021 return NULL;
9022 }
9023
9024 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9025 struct wireless_dev *wdev,
9026 enum nl80211_commands cmd,
9027 enum nl80211_attrs attr,
9028 int vendor_event_idx,
9029 int approxlen, gfp_t gfp)
9030 {
9031 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9032 const struct nl80211_vendor_cmd_info *info;
9033
9034 switch (cmd) {
9035 case NL80211_CMD_TESTMODE:
9036 if (WARN_ON(vendor_event_idx != -1))
9037 return NULL;
9038 info = NULL;
9039 break;
9040 case NL80211_CMD_VENDOR:
9041 if (WARN_ON(vendor_event_idx < 0 ||
9042 vendor_event_idx >= wiphy->n_vendor_events))
9043 return NULL;
9044 info = &wiphy->vendor_events[vendor_event_idx];
9045 break;
9046 default:
9047 WARN_ON(1);
9048 return NULL;
9049 }
9050
9051 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9052 cmd, attr, info, gfp);
9053 }
9054 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9055
9056 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9057 {
9058 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9059 void *hdr = ((void **)skb->cb)[1];
9060 struct nlattr *data = ((void **)skb->cb)[2];
9061 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9062
9063 /* clear CB data for netlink core to own from now on */
9064 memset(skb->cb, 0, sizeof(skb->cb));
9065
9066 nla_nest_end(skb, data);
9067 genlmsg_end(skb, hdr);
9068
9069 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9070 mcgrp = NL80211_MCGRP_VENDOR;
9071
9072 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9073 mcgrp, gfp);
9074 }
9075 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9076
9077 #ifdef CONFIG_NL80211_TESTMODE
9078 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9079 {
9080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9081 struct wireless_dev *wdev =
9082 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9083 int err;
9084
9085 if (!rdev->ops->testmode_cmd)
9086 return -EOPNOTSUPP;
9087
9088 if (IS_ERR(wdev)) {
9089 err = PTR_ERR(wdev);
9090 if (err != -EINVAL)
9091 return err;
9092 wdev = NULL;
9093 } else if (wdev->wiphy != &rdev->wiphy) {
9094 return -EINVAL;
9095 }
9096
9097 if (!info->attrs[NL80211_ATTR_TESTDATA])
9098 return -EINVAL;
9099
9100 rdev->cur_cmd_info = info;
9101 err = rdev_testmode_cmd(rdev, wdev,
9102 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9103 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9104 rdev->cur_cmd_info = NULL;
9105
9106 return err;
9107 }
9108
9109 static int nl80211_testmode_dump(struct sk_buff *skb,
9110 struct netlink_callback *cb)
9111 {
9112 struct cfg80211_registered_device *rdev;
9113 int err;
9114 long phy_idx;
9115 void *data = NULL;
9116 int data_len = 0;
9117
9118 rtnl_lock();
9119
9120 if (cb->args[0]) {
9121 /*
9122 * 0 is a valid index, but not valid for args[0],
9123 * so we need to offset by 1.
9124 */
9125 phy_idx = cb->args[0] - 1;
9126
9127 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9128 if (!rdev) {
9129 err = -ENOENT;
9130 goto out_err;
9131 }
9132 } else {
9133 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9134
9135 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9136 attrbuf, nl80211_fam.maxattr,
9137 nl80211_policy, NULL);
9138 if (err)
9139 goto out_err;
9140
9141 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9142 if (IS_ERR(rdev)) {
9143 err = PTR_ERR(rdev);
9144 goto out_err;
9145 }
9146 phy_idx = rdev->wiphy_idx;
9147
9148 if (attrbuf[NL80211_ATTR_TESTDATA])
9149 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9150 }
9151
9152 if (cb->args[1]) {
9153 data = nla_data((void *)cb->args[1]);
9154 data_len = nla_len((void *)cb->args[1]);
9155 }
9156
9157 if (!rdev->ops->testmode_dump) {
9158 err = -EOPNOTSUPP;
9159 goto out_err;
9160 }
9161
9162 while (1) {
9163 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9164 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9165 NL80211_CMD_TESTMODE);
9166 struct nlattr *tmdata;
9167
9168 if (!hdr)
9169 break;
9170
9171 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9172 genlmsg_cancel(skb, hdr);
9173 break;
9174 }
9175
9176 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9177 if (!tmdata) {
9178 genlmsg_cancel(skb, hdr);
9179 break;
9180 }
9181 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9182 nla_nest_end(skb, tmdata);
9183
9184 if (err == -ENOBUFS || err == -ENOENT) {
9185 genlmsg_cancel(skb, hdr);
9186 break;
9187 } else if (err) {
9188 genlmsg_cancel(skb, hdr);
9189 goto out_err;
9190 }
9191
9192 genlmsg_end(skb, hdr);
9193 }
9194
9195 err = skb->len;
9196 /* see above */
9197 cb->args[0] = phy_idx + 1;
9198 out_err:
9199 rtnl_unlock();
9200 return err;
9201 }
9202 #endif
9203
9204 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9205 {
9206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9207 struct net_device *dev = info->user_ptr[1];
9208 struct cfg80211_connect_params connect;
9209 struct wiphy *wiphy;
9210 struct cfg80211_cached_keys *connkeys = NULL;
9211 int err;
9212
9213 memset(&connect, 0, sizeof(connect));
9214
9215 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9216 return -EINVAL;
9217
9218 if (!info->attrs[NL80211_ATTR_SSID] ||
9219 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9220 return -EINVAL;
9221
9222 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9223 connect.auth_type =
9224 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9225 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9226 NL80211_CMD_CONNECT))
9227 return -EINVAL;
9228 } else
9229 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9230
9231 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9232
9233 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9234 !wiphy_ext_feature_isset(&rdev->wiphy,
9235 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9236 return -EINVAL;
9237 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9238
9239 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9240 NL80211_MAX_NR_CIPHER_SUITES);
9241 if (err)
9242 return err;
9243
9244 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9246 return -EOPNOTSUPP;
9247
9248 wiphy = &rdev->wiphy;
9249
9250 connect.bg_scan_period = -1;
9251 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9252 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9253 connect.bg_scan_period =
9254 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9255 }
9256
9257 if (info->attrs[NL80211_ATTR_MAC])
9258 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9259 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9260 connect.bssid_hint =
9261 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9262 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9263 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9264
9265 if (info->attrs[NL80211_ATTR_IE]) {
9266 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9267 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9268 }
9269
9270 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9271 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9272 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9273 !wiphy_ext_feature_isset(&rdev->wiphy,
9274 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9275 return -EOPNOTSUPP;
9276
9277 if (connect.mfp != NL80211_MFP_REQUIRED &&
9278 connect.mfp != NL80211_MFP_NO &&
9279 connect.mfp != NL80211_MFP_OPTIONAL)
9280 return -EINVAL;
9281 } else {
9282 connect.mfp = NL80211_MFP_NO;
9283 }
9284
9285 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9286 connect.prev_bssid =
9287 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9288
9289 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9290 connect.channel = nl80211_get_valid_chan(
9291 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9292 if (!connect.channel)
9293 return -EINVAL;
9294 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9295 connect.channel_hint = nl80211_get_valid_chan(
9296 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9297 if (!connect.channel_hint)
9298 return -EINVAL;
9299 }
9300
9301 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9302 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9303 if (IS_ERR(connkeys))
9304 return PTR_ERR(connkeys);
9305 }
9306
9307 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9308 connect.flags |= ASSOC_REQ_DISABLE_HT;
9309
9310 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9311 memcpy(&connect.ht_capa_mask,
9312 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9313 sizeof(connect.ht_capa_mask));
9314
9315 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9316 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9317 kzfree(connkeys);
9318 return -EINVAL;
9319 }
9320 memcpy(&connect.ht_capa,
9321 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9322 sizeof(connect.ht_capa));
9323 }
9324
9325 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9326 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9327
9328 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9329 memcpy(&connect.vht_capa_mask,
9330 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9331 sizeof(connect.vht_capa_mask));
9332
9333 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9334 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9335 kzfree(connkeys);
9336 return -EINVAL;
9337 }
9338 memcpy(&connect.vht_capa,
9339 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9340 sizeof(connect.vht_capa));
9341 }
9342
9343 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9344 if (!((rdev->wiphy.features &
9345 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9346 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9347 !wiphy_ext_feature_isset(&rdev->wiphy,
9348 NL80211_EXT_FEATURE_RRM)) {
9349 kzfree(connkeys);
9350 return -EINVAL;
9351 }
9352 connect.flags |= ASSOC_REQ_USE_RRM;
9353 }
9354
9355 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9356 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9357 kzfree(connkeys);
9358 return -EOPNOTSUPP;
9359 }
9360
9361 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9362 /* bss selection makes no sense if bssid is set */
9363 if (connect.bssid) {
9364 kzfree(connkeys);
9365 return -EINVAL;
9366 }
9367
9368 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9369 wiphy, &connect.bss_select);
9370 if (err) {
9371 kzfree(connkeys);
9372 return err;
9373 }
9374 }
9375
9376 if (wiphy_ext_feature_isset(&rdev->wiphy,
9377 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9378 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9379 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9380 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9381 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9382 connect.fils_erp_username =
9383 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9384 connect.fils_erp_username_len =
9385 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9386 connect.fils_erp_realm =
9387 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9388 connect.fils_erp_realm_len =
9389 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9390 connect.fils_erp_next_seq_num =
9391 nla_get_u16(
9392 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9393 connect.fils_erp_rrk =
9394 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9395 connect.fils_erp_rrk_len =
9396 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9397 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9398 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9399 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9400 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9401 kzfree(connkeys);
9402 return -EINVAL;
9403 }
9404
9405 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9406 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9407 kzfree(connkeys);
9408 GENL_SET_ERR_MSG(info,
9409 "external auth requires connection ownership");
9410 return -EINVAL;
9411 }
9412 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9413 }
9414
9415 wdev_lock(dev->ieee80211_ptr);
9416
9417 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9418 connect.prev_bssid);
9419 if (err)
9420 kzfree(connkeys);
9421
9422 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9423 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9424 if (connect.bssid)
9425 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9426 connect.bssid, ETH_ALEN);
9427 else
9428 memset(dev->ieee80211_ptr->disconnect_bssid,
9429 0, ETH_ALEN);
9430 }
9431
9432 wdev_unlock(dev->ieee80211_ptr);
9433
9434 return err;
9435 }
9436
9437 static int nl80211_update_connect_params(struct sk_buff *skb,
9438 struct genl_info *info)
9439 {
9440 struct cfg80211_connect_params connect = {};
9441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9442 struct net_device *dev = info->user_ptr[1];
9443 struct wireless_dev *wdev = dev->ieee80211_ptr;
9444 bool fils_sk_offload;
9445 u32 auth_type;
9446 u32 changed = 0;
9447 int ret;
9448
9449 if (!rdev->ops->update_connect_params)
9450 return -EOPNOTSUPP;
9451
9452 if (info->attrs[NL80211_ATTR_IE]) {
9453 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9454 return -EINVAL;
9455 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9456 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9457 changed |= UPDATE_ASSOC_IES;
9458 }
9459
9460 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9461 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9462
9463 /*
9464 * when driver supports fils-sk offload all attributes must be
9465 * provided. So the else covers "fils-sk-not-all" and
9466 * "no-fils-sk-any".
9467 */
9468 if (fils_sk_offload &&
9469 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9470 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9471 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9472 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9473 connect.fils_erp_username =
9474 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9475 connect.fils_erp_username_len =
9476 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9477 connect.fils_erp_realm =
9478 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9479 connect.fils_erp_realm_len =
9480 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9481 connect.fils_erp_next_seq_num =
9482 nla_get_u16(
9483 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9484 connect.fils_erp_rrk =
9485 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9486 connect.fils_erp_rrk_len =
9487 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9488 changed |= UPDATE_FILS_ERP_INFO;
9489 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9490 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9491 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9492 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9493 return -EINVAL;
9494 }
9495
9496 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9497 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9498 if (!nl80211_valid_auth_type(rdev, auth_type,
9499 NL80211_CMD_CONNECT))
9500 return -EINVAL;
9501
9502 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9503 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9504 return -EINVAL;
9505
9506 connect.auth_type = auth_type;
9507 changed |= UPDATE_AUTH_TYPE;
9508 }
9509
9510 wdev_lock(dev->ieee80211_ptr);
9511 if (!wdev->current_bss)
9512 ret = -ENOLINK;
9513 else
9514 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9515 wdev_unlock(dev->ieee80211_ptr);
9516
9517 return ret;
9518 }
9519
9520 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9521 {
9522 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9523 struct net_device *dev = info->user_ptr[1];
9524 u16 reason;
9525 int ret;
9526
9527 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9528 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9529 return -EPERM;
9530
9531 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9532 reason = WLAN_REASON_DEAUTH_LEAVING;
9533 else
9534 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9535
9536 if (reason == 0)
9537 return -EINVAL;
9538
9539 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9540 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9541 return -EOPNOTSUPP;
9542
9543 wdev_lock(dev->ieee80211_ptr);
9544 ret = cfg80211_disconnect(rdev, dev, reason, true);
9545 wdev_unlock(dev->ieee80211_ptr);
9546 return ret;
9547 }
9548
9549 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9550 {
9551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9552 struct net *net;
9553 int err;
9554
9555 if (info->attrs[NL80211_ATTR_PID]) {
9556 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9557
9558 net = get_net_ns_by_pid(pid);
9559 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9560 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9561
9562 net = get_net_ns_by_fd(fd);
9563 } else {
9564 return -EINVAL;
9565 }
9566
9567 if (IS_ERR(net))
9568 return PTR_ERR(net);
9569
9570 err = 0;
9571
9572 /* check if anything to do */
9573 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9574 err = cfg80211_switch_netns(rdev, net);
9575
9576 put_net(net);
9577 return err;
9578 }
9579
9580 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9581 {
9582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9583 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9584 struct cfg80211_pmksa *pmksa) = NULL;
9585 struct net_device *dev = info->user_ptr[1];
9586 struct cfg80211_pmksa pmksa;
9587
9588 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9589
9590 if (!info->attrs[NL80211_ATTR_PMKID])
9591 return -EINVAL;
9592
9593 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9594
9595 if (info->attrs[NL80211_ATTR_MAC]) {
9596 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9597 } else if (info->attrs[NL80211_ATTR_SSID] &&
9598 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9599 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9600 info->attrs[NL80211_ATTR_PMK])) {
9601 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9602 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9603 pmksa.cache_id =
9604 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9605 } else {
9606 return -EINVAL;
9607 }
9608 if (info->attrs[NL80211_ATTR_PMK]) {
9609 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9610 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9611 }
9612
9613 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9614 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9615 return -EOPNOTSUPP;
9616
9617 switch (info->genlhdr->cmd) {
9618 case NL80211_CMD_SET_PMKSA:
9619 rdev_ops = rdev->ops->set_pmksa;
9620 break;
9621 case NL80211_CMD_DEL_PMKSA:
9622 rdev_ops = rdev->ops->del_pmksa;
9623 break;
9624 default:
9625 WARN_ON(1);
9626 break;
9627 }
9628
9629 if (!rdev_ops)
9630 return -EOPNOTSUPP;
9631
9632 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9633 }
9634
9635 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9636 {
9637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9638 struct net_device *dev = info->user_ptr[1];
9639
9640 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9641 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9642 return -EOPNOTSUPP;
9643
9644 if (!rdev->ops->flush_pmksa)
9645 return -EOPNOTSUPP;
9646
9647 return rdev_flush_pmksa(rdev, dev);
9648 }
9649
9650 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9651 {
9652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9653 struct net_device *dev = info->user_ptr[1];
9654 u8 action_code, dialog_token;
9655 u32 peer_capability = 0;
9656 u16 status_code;
9657 u8 *peer;
9658 bool initiator;
9659
9660 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9661 !rdev->ops->tdls_mgmt)
9662 return -EOPNOTSUPP;
9663
9664 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9665 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9666 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9667 !info->attrs[NL80211_ATTR_IE] ||
9668 !info->attrs[NL80211_ATTR_MAC])
9669 return -EINVAL;
9670
9671 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9672 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9673 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9674 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9675 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9676 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9677 peer_capability =
9678 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9679
9680 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9681 dialog_token, status_code, peer_capability,
9682 initiator,
9683 nla_data(info->attrs[NL80211_ATTR_IE]),
9684 nla_len(info->attrs[NL80211_ATTR_IE]));
9685 }
9686
9687 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9688 {
9689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690 struct net_device *dev = info->user_ptr[1];
9691 enum nl80211_tdls_operation operation;
9692 u8 *peer;
9693
9694 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9695 !rdev->ops->tdls_oper)
9696 return -EOPNOTSUPP;
9697
9698 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9699 !info->attrs[NL80211_ATTR_MAC])
9700 return -EINVAL;
9701
9702 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9703 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9704
9705 return rdev_tdls_oper(rdev, dev, peer, operation);
9706 }
9707
9708 static int nl80211_remain_on_channel(struct sk_buff *skb,
9709 struct genl_info *info)
9710 {
9711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9712 struct wireless_dev *wdev = info->user_ptr[1];
9713 struct cfg80211_chan_def chandef;
9714 const struct cfg80211_chan_def *compat_chandef;
9715 struct sk_buff *msg;
9716 void *hdr;
9717 u64 cookie;
9718 u32 duration;
9719 int err;
9720
9721 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9722 !info->attrs[NL80211_ATTR_DURATION])
9723 return -EINVAL;
9724
9725 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9726
9727 if (!rdev->ops->remain_on_channel ||
9728 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9729 return -EOPNOTSUPP;
9730
9731 /*
9732 * We should be on that channel for at least a minimum amount of
9733 * time (10ms) but no longer than the driver supports.
9734 */
9735 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9736 duration > rdev->wiphy.max_remain_on_channel_duration)
9737 return -EINVAL;
9738
9739 err = nl80211_parse_chandef(rdev, info, &chandef);
9740 if (err)
9741 return err;
9742
9743 wdev_lock(wdev);
9744 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9745 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9746 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9747 &chandef);
9748 if (compat_chandef != &chandef) {
9749 wdev_unlock(wdev);
9750 return -EBUSY;
9751 }
9752 }
9753 wdev_unlock(wdev);
9754
9755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9756 if (!msg)
9757 return -ENOMEM;
9758
9759 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9760 NL80211_CMD_REMAIN_ON_CHANNEL);
9761 if (!hdr) {
9762 err = -ENOBUFS;
9763 goto free_msg;
9764 }
9765
9766 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9767 duration, &cookie);
9768
9769 if (err)
9770 goto free_msg;
9771
9772 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9773 NL80211_ATTR_PAD))
9774 goto nla_put_failure;
9775
9776 genlmsg_end(msg, hdr);
9777
9778 return genlmsg_reply(msg, info);
9779
9780 nla_put_failure:
9781 err = -ENOBUFS;
9782 free_msg:
9783 nlmsg_free(msg);
9784 return err;
9785 }
9786
9787 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9788 struct genl_info *info)
9789 {
9790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9791 struct wireless_dev *wdev = info->user_ptr[1];
9792 u64 cookie;
9793
9794 if (!info->attrs[NL80211_ATTR_COOKIE])
9795 return -EINVAL;
9796
9797 if (!rdev->ops->cancel_remain_on_channel)
9798 return -EOPNOTSUPP;
9799
9800 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9801
9802 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9803 }
9804
9805 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9806 struct genl_info *info)
9807 {
9808 struct cfg80211_bitrate_mask mask;
9809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9810 struct net_device *dev = info->user_ptr[1];
9811 int err;
9812
9813 if (!rdev->ops->set_bitrate_mask)
9814 return -EOPNOTSUPP;
9815
9816 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9817 if (err)
9818 return err;
9819
9820 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9821 }
9822
9823 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9824 {
9825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9826 struct wireless_dev *wdev = info->user_ptr[1];
9827 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9828
9829 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9830 return -EINVAL;
9831
9832 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9833 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9834
9835 switch (wdev->iftype) {
9836 case NL80211_IFTYPE_STATION:
9837 case NL80211_IFTYPE_ADHOC:
9838 case NL80211_IFTYPE_P2P_CLIENT:
9839 case NL80211_IFTYPE_AP:
9840 case NL80211_IFTYPE_AP_VLAN:
9841 case NL80211_IFTYPE_MESH_POINT:
9842 case NL80211_IFTYPE_P2P_GO:
9843 case NL80211_IFTYPE_P2P_DEVICE:
9844 break;
9845 case NL80211_IFTYPE_NAN:
9846 default:
9847 return -EOPNOTSUPP;
9848 }
9849
9850 /* not much point in registering if we can't reply */
9851 if (!rdev->ops->mgmt_tx)
9852 return -EOPNOTSUPP;
9853
9854 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9855 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9856 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9857 }
9858
9859 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9860 {
9861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9862 struct wireless_dev *wdev = info->user_ptr[1];
9863 struct cfg80211_chan_def chandef;
9864 int err;
9865 void *hdr = NULL;
9866 u64 cookie;
9867 struct sk_buff *msg = NULL;
9868 struct cfg80211_mgmt_tx_params params = {
9869 .dont_wait_for_ack =
9870 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9871 };
9872
9873 if (!info->attrs[NL80211_ATTR_FRAME])
9874 return -EINVAL;
9875
9876 if (!rdev->ops->mgmt_tx)
9877 return -EOPNOTSUPP;
9878
9879 switch (wdev->iftype) {
9880 case NL80211_IFTYPE_P2P_DEVICE:
9881 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9882 return -EINVAL;
9883 case NL80211_IFTYPE_STATION:
9884 case NL80211_IFTYPE_ADHOC:
9885 case NL80211_IFTYPE_P2P_CLIENT:
9886 case NL80211_IFTYPE_AP:
9887 case NL80211_IFTYPE_AP_VLAN:
9888 case NL80211_IFTYPE_MESH_POINT:
9889 case NL80211_IFTYPE_P2P_GO:
9890 break;
9891 case NL80211_IFTYPE_NAN:
9892 default:
9893 return -EOPNOTSUPP;
9894 }
9895
9896 if (info->attrs[NL80211_ATTR_DURATION]) {
9897 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9898 return -EINVAL;
9899 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9900
9901 /*
9902 * We should wait on the channel for at least a minimum amount
9903 * of time (10ms) but no longer than the driver supports.
9904 */
9905 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9906 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9907 return -EINVAL;
9908 }
9909
9910 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9911
9912 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9913 return -EINVAL;
9914
9915 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9916
9917 /* get the channel if any has been specified, otherwise pass NULL to
9918 * the driver. The latter will use the current one
9919 */
9920 chandef.chan = NULL;
9921 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9922 err = nl80211_parse_chandef(rdev, info, &chandef);
9923 if (err)
9924 return err;
9925 }
9926
9927 if (!chandef.chan && params.offchan)
9928 return -EINVAL;
9929
9930 wdev_lock(wdev);
9931 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9932 wdev_unlock(wdev);
9933 return -EBUSY;
9934 }
9935 wdev_unlock(wdev);
9936
9937 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9938 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9939
9940 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9941 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9942 int i;
9943
9944 if (len % sizeof(u16))
9945 return -EINVAL;
9946
9947 params.n_csa_offsets = len / sizeof(u16);
9948 params.csa_offsets =
9949 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9950
9951 /* check that all the offsets fit the frame */
9952 for (i = 0; i < params.n_csa_offsets; i++) {
9953 if (params.csa_offsets[i] >= params.len)
9954 return -EINVAL;
9955 }
9956 }
9957
9958 if (!params.dont_wait_for_ack) {
9959 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9960 if (!msg)
9961 return -ENOMEM;
9962
9963 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9964 NL80211_CMD_FRAME);
9965 if (!hdr) {
9966 err = -ENOBUFS;
9967 goto free_msg;
9968 }
9969 }
9970
9971 params.chan = chandef.chan;
9972 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9973 if (err)
9974 goto free_msg;
9975
9976 if (msg) {
9977 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9978 NL80211_ATTR_PAD))
9979 goto nla_put_failure;
9980
9981 genlmsg_end(msg, hdr);
9982 return genlmsg_reply(msg, info);
9983 }
9984
9985 return 0;
9986
9987 nla_put_failure:
9988 err = -ENOBUFS;
9989 free_msg:
9990 nlmsg_free(msg);
9991 return err;
9992 }
9993
9994 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9995 {
9996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9997 struct wireless_dev *wdev = info->user_ptr[1];
9998 u64 cookie;
9999
10000 if (!info->attrs[NL80211_ATTR_COOKIE])
10001 return -EINVAL;
10002
10003 if (!rdev->ops->mgmt_tx_cancel_wait)
10004 return -EOPNOTSUPP;
10005
10006 switch (wdev->iftype) {
10007 case NL80211_IFTYPE_STATION:
10008 case NL80211_IFTYPE_ADHOC:
10009 case NL80211_IFTYPE_P2P_CLIENT:
10010 case NL80211_IFTYPE_AP:
10011 case NL80211_IFTYPE_AP_VLAN:
10012 case NL80211_IFTYPE_P2P_GO:
10013 case NL80211_IFTYPE_P2P_DEVICE:
10014 break;
10015 case NL80211_IFTYPE_NAN:
10016 default:
10017 return -EOPNOTSUPP;
10018 }
10019
10020 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10021
10022 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10023 }
10024
10025 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10026 {
10027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10028 struct wireless_dev *wdev;
10029 struct net_device *dev = info->user_ptr[1];
10030 u8 ps_state;
10031 bool state;
10032 int err;
10033
10034 if (!info->attrs[NL80211_ATTR_PS_STATE])
10035 return -EINVAL;
10036
10037 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10038
10039 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
10040 return -EINVAL;
10041
10042 wdev = dev->ieee80211_ptr;
10043
10044 if (!rdev->ops->set_power_mgmt)
10045 return -EOPNOTSUPP;
10046
10047 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10048
10049 if (state == wdev->ps)
10050 return 0;
10051
10052 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10053 if (!err)
10054 wdev->ps = state;
10055 return err;
10056 }
10057
10058 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10059 {
10060 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10061 enum nl80211_ps_state ps_state;
10062 struct wireless_dev *wdev;
10063 struct net_device *dev = info->user_ptr[1];
10064 struct sk_buff *msg;
10065 void *hdr;
10066 int err;
10067
10068 wdev = dev->ieee80211_ptr;
10069
10070 if (!rdev->ops->set_power_mgmt)
10071 return -EOPNOTSUPP;
10072
10073 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10074 if (!msg)
10075 return -ENOMEM;
10076
10077 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10078 NL80211_CMD_GET_POWER_SAVE);
10079 if (!hdr) {
10080 err = -ENOBUFS;
10081 goto free_msg;
10082 }
10083
10084 if (wdev->ps)
10085 ps_state = NL80211_PS_ENABLED;
10086 else
10087 ps_state = NL80211_PS_DISABLED;
10088
10089 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10090 goto nla_put_failure;
10091
10092 genlmsg_end(msg, hdr);
10093 return genlmsg_reply(msg, info);
10094
10095 nla_put_failure:
10096 err = -ENOBUFS;
10097 free_msg:
10098 nlmsg_free(msg);
10099 return err;
10100 }
10101
10102 static const struct nla_policy
10103 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10104 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10105 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10106 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10107 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10108 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10109 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10110 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10111 };
10112
10113 static int nl80211_set_cqm_txe(struct genl_info *info,
10114 u32 rate, u32 pkts, u32 intvl)
10115 {
10116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10117 struct net_device *dev = info->user_ptr[1];
10118 struct wireless_dev *wdev = dev->ieee80211_ptr;
10119
10120 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10121 return -EINVAL;
10122
10123 if (!rdev->ops->set_cqm_txe_config)
10124 return -EOPNOTSUPP;
10125
10126 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10127 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10128 return -EOPNOTSUPP;
10129
10130 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10131 }
10132
10133 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10134 struct net_device *dev)
10135 {
10136 struct wireless_dev *wdev = dev->ieee80211_ptr;
10137 s32 last, low, high;
10138 u32 hyst;
10139 int i, n;
10140 int err;
10141
10142 /* RSSI reporting disabled? */
10143 if (!wdev->cqm_config)
10144 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10145
10146 /*
10147 * Obtain current RSSI value if possible, if not and no RSSI threshold
10148 * event has been received yet, we should receive an event after a
10149 * connection is established and enough beacons received to calculate
10150 * the average.
10151 */
10152 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10153 rdev->ops->get_station) {
10154 struct station_info sinfo = {};
10155 u8 *mac_addr;
10156
10157 mac_addr = wdev->current_bss->pub.bssid;
10158
10159 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10160 if (err)
10161 return err;
10162
10163 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10164 wdev->cqm_config->last_rssi_event_value =
10165 (s8) sinfo.rx_beacon_signal_avg;
10166 }
10167
10168 last = wdev->cqm_config->last_rssi_event_value;
10169 hyst = wdev->cqm_config->rssi_hyst;
10170 n = wdev->cqm_config->n_rssi_thresholds;
10171
10172 for (i = 0; i < n; i++)
10173 if (last < wdev->cqm_config->rssi_thresholds[i])
10174 break;
10175
10176 low = i > 0 ?
10177 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
10178 high = i < n ?
10179 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
10180
10181 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10182 }
10183
10184 static int nl80211_set_cqm_rssi(struct genl_info *info,
10185 const s32 *thresholds, int n_thresholds,
10186 u32 hysteresis)
10187 {
10188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10189 struct net_device *dev = info->user_ptr[1];
10190 struct wireless_dev *wdev = dev->ieee80211_ptr;
10191 int i, err;
10192 s32 prev = S32_MIN;
10193
10194 /* Check all values negative and sorted */
10195 for (i = 0; i < n_thresholds; i++) {
10196 if (thresholds[i] > 0 || thresholds[i] <= prev)
10197 return -EINVAL;
10198
10199 prev = thresholds[i];
10200 }
10201
10202 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10203 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10204 return -EOPNOTSUPP;
10205
10206 wdev_lock(wdev);
10207 cfg80211_cqm_config_free(wdev);
10208 wdev_unlock(wdev);
10209
10210 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10211 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10212 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10213
10214 return rdev_set_cqm_rssi_config(rdev, dev,
10215 thresholds[0], hysteresis);
10216 }
10217
10218 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10219 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10220 return -EOPNOTSUPP;
10221
10222 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10223 n_thresholds = 0;
10224
10225 wdev_lock(wdev);
10226 if (n_thresholds) {
10227 struct cfg80211_cqm_config *cqm_config;
10228
10229 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10230 n_thresholds * sizeof(s32), GFP_KERNEL);
10231 if (!cqm_config) {
10232 err = -ENOMEM;
10233 goto unlock;
10234 }
10235
10236 cqm_config->rssi_hyst = hysteresis;
10237 cqm_config->n_rssi_thresholds = n_thresholds;
10238 memcpy(cqm_config->rssi_thresholds, thresholds,
10239 n_thresholds * sizeof(s32));
10240
10241 wdev->cqm_config = cqm_config;
10242 }
10243
10244 err = cfg80211_cqm_rssi_update(rdev, dev);
10245
10246 unlock:
10247 wdev_unlock(wdev);
10248
10249 return err;
10250 }
10251
10252 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10253 {
10254 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10255 struct nlattr *cqm;
10256 int err;
10257
10258 cqm = info->attrs[NL80211_ATTR_CQM];
10259 if (!cqm)
10260 return -EINVAL;
10261
10262 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10263 nl80211_attr_cqm_policy, info->extack);
10264 if (err)
10265 return err;
10266
10267 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10268 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10269 const s32 *thresholds =
10270 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10271 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10272 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10273
10274 if (len % 4)
10275 return -EINVAL;
10276
10277 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10278 hysteresis);
10279 }
10280
10281 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10282 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10283 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10284 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10285 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10286 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10287
10288 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10289 }
10290
10291 return -EINVAL;
10292 }
10293
10294 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10295 {
10296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10297 struct net_device *dev = info->user_ptr[1];
10298 struct ocb_setup setup = {};
10299 int err;
10300
10301 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10302 if (err)
10303 return err;
10304
10305 return cfg80211_join_ocb(rdev, dev, &setup);
10306 }
10307
10308 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10309 {
10310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10311 struct net_device *dev = info->user_ptr[1];
10312
10313 return cfg80211_leave_ocb(rdev, dev);
10314 }
10315
10316 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10317 {
10318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10319 struct net_device *dev = info->user_ptr[1];
10320 struct mesh_config cfg;
10321 struct mesh_setup setup;
10322 int err;
10323
10324 /* start with default */
10325 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10326 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10327
10328 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10329 /* and parse parameters if given */
10330 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10331 if (err)
10332 return err;
10333 }
10334
10335 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10336 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10337 return -EINVAL;
10338
10339 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10340 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10341
10342 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10343 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10344 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10345 return -EINVAL;
10346
10347 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10348 setup.beacon_interval =
10349 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10350
10351 err = cfg80211_validate_beacon_int(rdev,
10352 NL80211_IFTYPE_MESH_POINT,
10353 setup.beacon_interval);
10354 if (err)
10355 return err;
10356 }
10357
10358 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10359 setup.dtim_period =
10360 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10361 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10362 return -EINVAL;
10363 }
10364
10365 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10366 /* parse additional setup parameters if given */
10367 err = nl80211_parse_mesh_setup(info, &setup);
10368 if (err)
10369 return err;
10370 }
10371
10372 if (setup.user_mpm)
10373 cfg.auto_open_plinks = false;
10374
10375 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10376 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10377 if (err)
10378 return err;
10379 } else {
10380 /* __cfg80211_join_mesh() will sort it out */
10381 setup.chandef.chan = NULL;
10382 }
10383
10384 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10385 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10386 int n_rates =
10387 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10388 struct ieee80211_supported_band *sband;
10389
10390 if (!setup.chandef.chan)
10391 return -EINVAL;
10392
10393 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10394
10395 err = ieee80211_get_ratemask(sband, rates, n_rates,
10396 &setup.basic_rates);
10397 if (err)
10398 return err;
10399 }
10400
10401 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10402 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10403 if (err)
10404 return err;
10405
10406 if (!setup.chandef.chan)
10407 return -EINVAL;
10408
10409 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10410 &setup.beacon_rate);
10411 if (err)
10412 return err;
10413 }
10414
10415 setup.userspace_handles_dfs =
10416 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10417
10418 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10419 int r = validate_pae_over_nl80211(rdev, info);
10420
10421 if (r < 0)
10422 return r;
10423
10424 setup.control_port_over_nl80211 = true;
10425 }
10426
10427 wdev_lock(dev->ieee80211_ptr);
10428 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10429 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10430 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10431 wdev_unlock(dev->ieee80211_ptr);
10432
10433 return err;
10434 }
10435
10436 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10437 {
10438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10439 struct net_device *dev = info->user_ptr[1];
10440
10441 return cfg80211_leave_mesh(rdev, dev);
10442 }
10443
10444 #ifdef CONFIG_PM
10445 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10446 struct cfg80211_registered_device *rdev)
10447 {
10448 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10449 struct nlattr *nl_pats, *nl_pat;
10450 int i, pat_len;
10451
10452 if (!wowlan->n_patterns)
10453 return 0;
10454
10455 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10456 if (!nl_pats)
10457 return -ENOBUFS;
10458
10459 for (i = 0; i < wowlan->n_patterns; i++) {
10460 nl_pat = nla_nest_start(msg, i + 1);
10461 if (!nl_pat)
10462 return -ENOBUFS;
10463 pat_len = wowlan->patterns[i].pattern_len;
10464 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10465 wowlan->patterns[i].mask) ||
10466 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10467 wowlan->patterns[i].pattern) ||
10468 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10469 wowlan->patterns[i].pkt_offset))
10470 return -ENOBUFS;
10471 nla_nest_end(msg, nl_pat);
10472 }
10473 nla_nest_end(msg, nl_pats);
10474
10475 return 0;
10476 }
10477
10478 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10479 struct cfg80211_wowlan_tcp *tcp)
10480 {
10481 struct nlattr *nl_tcp;
10482
10483 if (!tcp)
10484 return 0;
10485
10486 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10487 if (!nl_tcp)
10488 return -ENOBUFS;
10489
10490 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10491 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10492 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10493 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10494 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10495 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10496 tcp->payload_len, tcp->payload) ||
10497 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10498 tcp->data_interval) ||
10499 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10500 tcp->wake_len, tcp->wake_data) ||
10501 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10502 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10503 return -ENOBUFS;
10504
10505 if (tcp->payload_seq.len &&
10506 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10507 sizeof(tcp->payload_seq), &tcp->payload_seq))
10508 return -ENOBUFS;
10509
10510 if (tcp->payload_tok.len &&
10511 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10512 sizeof(tcp->payload_tok) + tcp->tokens_size,
10513 &tcp->payload_tok))
10514 return -ENOBUFS;
10515
10516 nla_nest_end(msg, nl_tcp);
10517
10518 return 0;
10519 }
10520
10521 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10522 struct cfg80211_sched_scan_request *req)
10523 {
10524 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10525 int i;
10526
10527 if (!req)
10528 return 0;
10529
10530 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10531 if (!nd)
10532 return -ENOBUFS;
10533
10534 if (req->n_scan_plans == 1 &&
10535 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10536 req->scan_plans[0].interval * 1000))
10537 return -ENOBUFS;
10538
10539 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10540 return -ENOBUFS;
10541
10542 if (req->relative_rssi_set) {
10543 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10544
10545 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10546 req->relative_rssi))
10547 return -ENOBUFS;
10548
10549 rssi_adjust.band = req->rssi_adjust.band;
10550 rssi_adjust.delta = req->rssi_adjust.delta;
10551 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10552 sizeof(rssi_adjust), &rssi_adjust))
10553 return -ENOBUFS;
10554 }
10555
10556 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10557 if (!freqs)
10558 return -ENOBUFS;
10559
10560 for (i = 0; i < req->n_channels; i++) {
10561 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10562 return -ENOBUFS;
10563 }
10564
10565 nla_nest_end(msg, freqs);
10566
10567 if (req->n_match_sets) {
10568 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10569 if (!matches)
10570 return -ENOBUFS;
10571
10572 for (i = 0; i < req->n_match_sets; i++) {
10573 match = nla_nest_start(msg, i);
10574 if (!match)
10575 return -ENOBUFS;
10576
10577 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10578 req->match_sets[i].ssid.ssid_len,
10579 req->match_sets[i].ssid.ssid))
10580 return -ENOBUFS;
10581 nla_nest_end(msg, match);
10582 }
10583 nla_nest_end(msg, matches);
10584 }
10585
10586 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10587 if (!scan_plans)
10588 return -ENOBUFS;
10589
10590 for (i = 0; i < req->n_scan_plans; i++) {
10591 scan_plan = nla_nest_start(msg, i + 1);
10592 if (!scan_plan)
10593 return -ENOBUFS;
10594
10595 if (!scan_plan ||
10596 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10597 req->scan_plans[i].interval) ||
10598 (req->scan_plans[i].iterations &&
10599 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10600 req->scan_plans[i].iterations)))
10601 return -ENOBUFS;
10602 nla_nest_end(msg, scan_plan);
10603 }
10604 nla_nest_end(msg, scan_plans);
10605
10606 nla_nest_end(msg, nd);
10607
10608 return 0;
10609 }
10610
10611 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10612 {
10613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10614 struct sk_buff *msg;
10615 void *hdr;
10616 u32 size = NLMSG_DEFAULT_SIZE;
10617
10618 if (!rdev->wiphy.wowlan)
10619 return -EOPNOTSUPP;
10620
10621 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10622 /* adjust size to have room for all the data */
10623 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10624 rdev->wiphy.wowlan_config->tcp->payload_len +
10625 rdev->wiphy.wowlan_config->tcp->wake_len +
10626 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10627 }
10628
10629 msg = nlmsg_new(size, GFP_KERNEL);
10630 if (!msg)
10631 return -ENOMEM;
10632
10633 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10634 NL80211_CMD_GET_WOWLAN);
10635 if (!hdr)
10636 goto nla_put_failure;
10637
10638 if (rdev->wiphy.wowlan_config) {
10639 struct nlattr *nl_wowlan;
10640
10641 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10642 if (!nl_wowlan)
10643 goto nla_put_failure;
10644
10645 if ((rdev->wiphy.wowlan_config->any &&
10646 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10647 (rdev->wiphy.wowlan_config->disconnect &&
10648 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10649 (rdev->wiphy.wowlan_config->magic_pkt &&
10650 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10651 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10652 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10653 (rdev->wiphy.wowlan_config->eap_identity_req &&
10654 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10655 (rdev->wiphy.wowlan_config->four_way_handshake &&
10656 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10657 (rdev->wiphy.wowlan_config->rfkill_release &&
10658 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10659 goto nla_put_failure;
10660
10661 if (nl80211_send_wowlan_patterns(msg, rdev))
10662 goto nla_put_failure;
10663
10664 if (nl80211_send_wowlan_tcp(msg,
10665 rdev->wiphy.wowlan_config->tcp))
10666 goto nla_put_failure;
10667
10668 if (nl80211_send_wowlan_nd(
10669 msg,
10670 rdev->wiphy.wowlan_config->nd_config))
10671 goto nla_put_failure;
10672
10673 nla_nest_end(msg, nl_wowlan);
10674 }
10675
10676 genlmsg_end(msg, hdr);
10677 return genlmsg_reply(msg, info);
10678
10679 nla_put_failure:
10680 nlmsg_free(msg);
10681 return -ENOBUFS;
10682 }
10683
10684 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10685 struct nlattr *attr,
10686 struct cfg80211_wowlan *trig)
10687 {
10688 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10689 struct cfg80211_wowlan_tcp *cfg;
10690 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10691 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10692 u32 size;
10693 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10694 int err, port;
10695
10696 if (!rdev->wiphy.wowlan->tcp)
10697 return -EINVAL;
10698
10699 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10700 nl80211_wowlan_tcp_policy, NULL);
10701 if (err)
10702 return err;
10703
10704 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10705 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10706 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10707 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10708 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10709 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10710 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10711 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10712 return -EINVAL;
10713
10714 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10715 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10716 return -EINVAL;
10717
10718 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10719 rdev->wiphy.wowlan->tcp->data_interval_max ||
10720 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10721 return -EINVAL;
10722
10723 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10724 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10725 return -EINVAL;
10726
10727 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10728 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10729 return -EINVAL;
10730
10731 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10732 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10733
10734 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10735 tokens_size = tokln - sizeof(*tok);
10736
10737 if (!tok->len || tokens_size % tok->len)
10738 return -EINVAL;
10739 if (!rdev->wiphy.wowlan->tcp->tok)
10740 return -EINVAL;
10741 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10742 return -EINVAL;
10743 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10744 return -EINVAL;
10745 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10746 return -EINVAL;
10747 if (tok->offset + tok->len > data_size)
10748 return -EINVAL;
10749 }
10750
10751 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10752 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10753 if (!rdev->wiphy.wowlan->tcp->seq)
10754 return -EINVAL;
10755 if (seq->len == 0 || seq->len > 4)
10756 return -EINVAL;
10757 if (seq->len + seq->offset > data_size)
10758 return -EINVAL;
10759 }
10760
10761 size = sizeof(*cfg);
10762 size += data_size;
10763 size += wake_size + wake_mask_size;
10764 size += tokens_size;
10765
10766 cfg = kzalloc(size, GFP_KERNEL);
10767 if (!cfg)
10768 return -ENOMEM;
10769 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10770 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10771 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10772 ETH_ALEN);
10773 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10774 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10775 else
10776 port = 0;
10777 #ifdef CONFIG_INET
10778 /* allocate a socket and port for it and use it */
10779 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10780 IPPROTO_TCP, &cfg->sock, 1);
10781 if (err) {
10782 kfree(cfg);
10783 return err;
10784 }
10785 if (inet_csk_get_port(cfg->sock->sk, port)) {
10786 sock_release(cfg->sock);
10787 kfree(cfg);
10788 return -EADDRINUSE;
10789 }
10790 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10791 #else
10792 if (!port) {
10793 kfree(cfg);
10794 return -EINVAL;
10795 }
10796 cfg->src_port = port;
10797 #endif
10798
10799 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10800 cfg->payload_len = data_size;
10801 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10802 memcpy((void *)cfg->payload,
10803 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10804 data_size);
10805 if (seq)
10806 cfg->payload_seq = *seq;
10807 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10808 cfg->wake_len = wake_size;
10809 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10810 memcpy((void *)cfg->wake_data,
10811 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10812 wake_size);
10813 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10814 data_size + wake_size;
10815 memcpy((void *)cfg->wake_mask,
10816 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10817 wake_mask_size);
10818 if (tok) {
10819 cfg->tokens_size = tokens_size;
10820 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10821 }
10822
10823 trig->tcp = cfg;
10824
10825 return 0;
10826 }
10827
10828 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10829 const struct wiphy_wowlan_support *wowlan,
10830 struct nlattr *attr,
10831 struct cfg80211_wowlan *trig)
10832 {
10833 struct nlattr **tb;
10834 int err;
10835
10836 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
10837 if (!tb)
10838 return -ENOMEM;
10839
10840 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10841 err = -EOPNOTSUPP;
10842 goto out;
10843 }
10844
10845 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10846 NULL);
10847 if (err)
10848 goto out;
10849
10850 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10851 wowlan->max_nd_match_sets);
10852 err = PTR_ERR_OR_ZERO(trig->nd_config);
10853 if (err)
10854 trig->nd_config = NULL;
10855
10856 out:
10857 kfree(tb);
10858 return err;
10859 }
10860
10861 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10862 {
10863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10864 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10865 struct cfg80211_wowlan new_triggers = {};
10866 struct cfg80211_wowlan *ntrig;
10867 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10868 int err, i;
10869 bool prev_enabled = rdev->wiphy.wowlan_config;
10870 bool regular = false;
10871
10872 if (!wowlan)
10873 return -EOPNOTSUPP;
10874
10875 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10876 cfg80211_rdev_free_wowlan(rdev);
10877 rdev->wiphy.wowlan_config = NULL;
10878 goto set_wakeup;
10879 }
10880
10881 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10882 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10883 nl80211_wowlan_policy, info->extack);
10884 if (err)
10885 return err;
10886
10887 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10888 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10889 return -EINVAL;
10890 new_triggers.any = true;
10891 }
10892
10893 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10894 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10895 return -EINVAL;
10896 new_triggers.disconnect = true;
10897 regular = true;
10898 }
10899
10900 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10901 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10902 return -EINVAL;
10903 new_triggers.magic_pkt = true;
10904 regular = true;
10905 }
10906
10907 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10908 return -EINVAL;
10909
10910 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10911 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10912 return -EINVAL;
10913 new_triggers.gtk_rekey_failure = true;
10914 regular = true;
10915 }
10916
10917 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10918 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10919 return -EINVAL;
10920 new_triggers.eap_identity_req = true;
10921 regular = true;
10922 }
10923
10924 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10925 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10926 return -EINVAL;
10927 new_triggers.four_way_handshake = true;
10928 regular = true;
10929 }
10930
10931 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10932 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10933 return -EINVAL;
10934 new_triggers.rfkill_release = true;
10935 regular = true;
10936 }
10937
10938 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10939 struct nlattr *pat;
10940 int n_patterns = 0;
10941 int rem, pat_len, mask_len, pkt_offset;
10942 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10943
10944 regular = true;
10945
10946 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10947 rem)
10948 n_patterns++;
10949 if (n_patterns > wowlan->n_patterns)
10950 return -EINVAL;
10951
10952 new_triggers.patterns = kcalloc(n_patterns,
10953 sizeof(new_triggers.patterns[0]),
10954 GFP_KERNEL);
10955 if (!new_triggers.patterns)
10956 return -ENOMEM;
10957
10958 new_triggers.n_patterns = n_patterns;
10959 i = 0;
10960
10961 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10962 rem) {
10963 u8 *mask_pat;
10964
10965 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10966 nl80211_packet_pattern_policy,
10967 info->extack);
10968 err = -EINVAL;
10969 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10970 !pat_tb[NL80211_PKTPAT_PATTERN])
10971 goto error;
10972 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10973 mask_len = DIV_ROUND_UP(pat_len, 8);
10974 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10975 goto error;
10976 if (pat_len > wowlan->pattern_max_len ||
10977 pat_len < wowlan->pattern_min_len)
10978 goto error;
10979
10980 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10981 pkt_offset = 0;
10982 else
10983 pkt_offset = nla_get_u32(
10984 pat_tb[NL80211_PKTPAT_OFFSET]);
10985 if (pkt_offset > wowlan->max_pkt_offset)
10986 goto error;
10987 new_triggers.patterns[i].pkt_offset = pkt_offset;
10988
10989 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10990 if (!mask_pat) {
10991 err = -ENOMEM;
10992 goto error;
10993 }
10994 new_triggers.patterns[i].mask = mask_pat;
10995 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10996 mask_len);
10997 mask_pat += mask_len;
10998 new_triggers.patterns[i].pattern = mask_pat;
10999 new_triggers.patterns[i].pattern_len = pat_len;
11000 memcpy(mask_pat,
11001 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11002 pat_len);
11003 i++;
11004 }
11005 }
11006
11007 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11008 regular = true;
11009 err = nl80211_parse_wowlan_tcp(
11010 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11011 &new_triggers);
11012 if (err)
11013 goto error;
11014 }
11015
11016 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11017 regular = true;
11018 err = nl80211_parse_wowlan_nd(
11019 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11020 &new_triggers);
11021 if (err)
11022 goto error;
11023 }
11024
11025 /* The 'any' trigger means the device continues operating more or less
11026 * as in its normal operation mode and wakes up the host on most of the
11027 * normal interrupts (like packet RX, ...)
11028 * It therefore makes little sense to combine with the more constrained
11029 * wakeup trigger modes.
11030 */
11031 if (new_triggers.any && regular) {
11032 err = -EINVAL;
11033 goto error;
11034 }
11035
11036 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11037 if (!ntrig) {
11038 err = -ENOMEM;
11039 goto error;
11040 }
11041 cfg80211_rdev_free_wowlan(rdev);
11042 rdev->wiphy.wowlan_config = ntrig;
11043
11044 set_wakeup:
11045 if (rdev->ops->set_wakeup &&
11046 prev_enabled != !!rdev->wiphy.wowlan_config)
11047 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11048
11049 return 0;
11050 error:
11051 for (i = 0; i < new_triggers.n_patterns; i++)
11052 kfree(new_triggers.patterns[i].mask);
11053 kfree(new_triggers.patterns);
11054 if (new_triggers.tcp && new_triggers.tcp->sock)
11055 sock_release(new_triggers.tcp->sock);
11056 kfree(new_triggers.tcp);
11057 kfree(new_triggers.nd_config);
11058 return err;
11059 }
11060 #endif
11061
11062 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11063 struct cfg80211_registered_device *rdev)
11064 {
11065 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11066 int i, j, pat_len;
11067 struct cfg80211_coalesce_rules *rule;
11068
11069 if (!rdev->coalesce->n_rules)
11070 return 0;
11071
11072 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11073 if (!nl_rules)
11074 return -ENOBUFS;
11075
11076 for (i = 0; i < rdev->coalesce->n_rules; i++) {
11077 nl_rule = nla_nest_start(msg, i + 1);
11078 if (!nl_rule)
11079 return -ENOBUFS;
11080
11081 rule = &rdev->coalesce->rules[i];
11082 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11083 rule->delay))
11084 return -ENOBUFS;
11085
11086 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11087 rule->condition))
11088 return -ENOBUFS;
11089
11090 nl_pats = nla_nest_start(msg,
11091 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11092 if (!nl_pats)
11093 return -ENOBUFS;
11094
11095 for (j = 0; j < rule->n_patterns; j++) {
11096 nl_pat = nla_nest_start(msg, j + 1);
11097 if (!nl_pat)
11098 return -ENOBUFS;
11099 pat_len = rule->patterns[j].pattern_len;
11100 if (nla_put(msg, NL80211_PKTPAT_MASK,
11101 DIV_ROUND_UP(pat_len, 8),
11102 rule->patterns[j].mask) ||
11103 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11104 rule->patterns[j].pattern) ||
11105 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11106 rule->patterns[j].pkt_offset))
11107 return -ENOBUFS;
11108 nla_nest_end(msg, nl_pat);
11109 }
11110 nla_nest_end(msg, nl_pats);
11111 nla_nest_end(msg, nl_rule);
11112 }
11113 nla_nest_end(msg, nl_rules);
11114
11115 return 0;
11116 }
11117
11118 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11119 {
11120 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11121 struct sk_buff *msg;
11122 void *hdr;
11123
11124 if (!rdev->wiphy.coalesce)
11125 return -EOPNOTSUPP;
11126
11127 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11128 if (!msg)
11129 return -ENOMEM;
11130
11131 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11132 NL80211_CMD_GET_COALESCE);
11133 if (!hdr)
11134 goto nla_put_failure;
11135
11136 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11137 goto nla_put_failure;
11138
11139 genlmsg_end(msg, hdr);
11140 return genlmsg_reply(msg, info);
11141
11142 nla_put_failure:
11143 nlmsg_free(msg);
11144 return -ENOBUFS;
11145 }
11146
11147 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11148 {
11149 struct cfg80211_coalesce *coalesce = rdev->coalesce;
11150 int i, j;
11151 struct cfg80211_coalesce_rules *rule;
11152
11153 if (!coalesce)
11154 return;
11155
11156 for (i = 0; i < coalesce->n_rules; i++) {
11157 rule = &coalesce->rules[i];
11158 for (j = 0; j < rule->n_patterns; j++)
11159 kfree(rule->patterns[j].mask);
11160 kfree(rule->patterns);
11161 }
11162 kfree(coalesce->rules);
11163 kfree(coalesce);
11164 rdev->coalesce = NULL;
11165 }
11166
11167 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11168 struct nlattr *rule,
11169 struct cfg80211_coalesce_rules *new_rule)
11170 {
11171 int err, i;
11172 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11173 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11174 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11175 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11176
11177 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11178 nl80211_coalesce_policy, NULL);
11179 if (err)
11180 return err;
11181
11182 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11183 new_rule->delay =
11184 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11185 if (new_rule->delay > coalesce->max_delay)
11186 return -EINVAL;
11187
11188 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11189 new_rule->condition =
11190 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11191 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11192 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11193 return -EINVAL;
11194
11195 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11196 return -EINVAL;
11197
11198 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11199 rem)
11200 n_patterns++;
11201 if (n_patterns > coalesce->n_patterns)
11202 return -EINVAL;
11203
11204 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11205 GFP_KERNEL);
11206 if (!new_rule->patterns)
11207 return -ENOMEM;
11208
11209 new_rule->n_patterns = n_patterns;
11210 i = 0;
11211
11212 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11213 rem) {
11214 u8 *mask_pat;
11215
11216 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11217 nl80211_packet_pattern_policy, NULL);
11218 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11219 !pat_tb[NL80211_PKTPAT_PATTERN])
11220 return -EINVAL;
11221 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11222 mask_len = DIV_ROUND_UP(pat_len, 8);
11223 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11224 return -EINVAL;
11225 if (pat_len > coalesce->pattern_max_len ||
11226 pat_len < coalesce->pattern_min_len)
11227 return -EINVAL;
11228
11229 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11230 pkt_offset = 0;
11231 else
11232 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11233 if (pkt_offset > coalesce->max_pkt_offset)
11234 return -EINVAL;
11235 new_rule->patterns[i].pkt_offset = pkt_offset;
11236
11237 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11238 if (!mask_pat)
11239 return -ENOMEM;
11240
11241 new_rule->patterns[i].mask = mask_pat;
11242 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11243 mask_len);
11244
11245 mask_pat += mask_len;
11246 new_rule->patterns[i].pattern = mask_pat;
11247 new_rule->patterns[i].pattern_len = pat_len;
11248 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11249 pat_len);
11250 i++;
11251 }
11252
11253 return 0;
11254 }
11255
11256 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11257 {
11258 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11259 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11260 struct cfg80211_coalesce new_coalesce = {};
11261 struct cfg80211_coalesce *n_coalesce;
11262 int err, rem_rule, n_rules = 0, i, j;
11263 struct nlattr *rule;
11264 struct cfg80211_coalesce_rules *tmp_rule;
11265
11266 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11267 return -EOPNOTSUPP;
11268
11269 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11270 cfg80211_rdev_free_coalesce(rdev);
11271 rdev_set_coalesce(rdev, NULL);
11272 return 0;
11273 }
11274
11275 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11276 rem_rule)
11277 n_rules++;
11278 if (n_rules > coalesce->n_rules)
11279 return -EINVAL;
11280
11281 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11282 GFP_KERNEL);
11283 if (!new_coalesce.rules)
11284 return -ENOMEM;
11285
11286 new_coalesce.n_rules = n_rules;
11287 i = 0;
11288
11289 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11290 rem_rule) {
11291 err = nl80211_parse_coalesce_rule(rdev, rule,
11292 &new_coalesce.rules[i]);
11293 if (err)
11294 goto error;
11295
11296 i++;
11297 }
11298
11299 err = rdev_set_coalesce(rdev, &new_coalesce);
11300 if (err)
11301 goto error;
11302
11303 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11304 if (!n_coalesce) {
11305 err = -ENOMEM;
11306 goto error;
11307 }
11308 cfg80211_rdev_free_coalesce(rdev);
11309 rdev->coalesce = n_coalesce;
11310
11311 return 0;
11312 error:
11313 for (i = 0; i < new_coalesce.n_rules; i++) {
11314 tmp_rule = &new_coalesce.rules[i];
11315 for (j = 0; j < tmp_rule->n_patterns; j++)
11316 kfree(tmp_rule->patterns[j].mask);
11317 kfree(tmp_rule->patterns);
11318 }
11319 kfree(new_coalesce.rules);
11320
11321 return err;
11322 }
11323
11324 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11325 {
11326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11327 struct net_device *dev = info->user_ptr[1];
11328 struct wireless_dev *wdev = dev->ieee80211_ptr;
11329 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11330 struct cfg80211_gtk_rekey_data rekey_data;
11331 int err;
11332
11333 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11334 return -EINVAL;
11335
11336 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11337 info->attrs[NL80211_ATTR_REKEY_DATA],
11338 nl80211_rekey_policy, info->extack);
11339 if (err)
11340 return err;
11341
11342 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11343 !tb[NL80211_REKEY_DATA_KCK])
11344 return -EINVAL;
11345 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11346 return -ERANGE;
11347 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11348 return -ERANGE;
11349 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11350 return -ERANGE;
11351
11352 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11353 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11354 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11355
11356 wdev_lock(wdev);
11357 if (!wdev->current_bss) {
11358 err = -ENOTCONN;
11359 goto out;
11360 }
11361
11362 if (!rdev->ops->set_rekey_data) {
11363 err = -EOPNOTSUPP;
11364 goto out;
11365 }
11366
11367 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11368 out:
11369 wdev_unlock(wdev);
11370 return err;
11371 }
11372
11373 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11374 struct genl_info *info)
11375 {
11376 struct net_device *dev = info->user_ptr[1];
11377 struct wireless_dev *wdev = dev->ieee80211_ptr;
11378
11379 if (wdev->iftype != NL80211_IFTYPE_AP &&
11380 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11381 return -EINVAL;
11382
11383 if (wdev->ap_unexpected_nlportid)
11384 return -EBUSY;
11385
11386 wdev->ap_unexpected_nlportid = info->snd_portid;
11387 return 0;
11388 }
11389
11390 static int nl80211_probe_client(struct sk_buff *skb,
11391 struct genl_info *info)
11392 {
11393 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11394 struct net_device *dev = info->user_ptr[1];
11395 struct wireless_dev *wdev = dev->ieee80211_ptr;
11396 struct sk_buff *msg;
11397 void *hdr;
11398 const u8 *addr;
11399 u64 cookie;
11400 int err;
11401
11402 if (wdev->iftype != NL80211_IFTYPE_AP &&
11403 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11404 return -EOPNOTSUPP;
11405
11406 if (!info->attrs[NL80211_ATTR_MAC])
11407 return -EINVAL;
11408
11409 if (!rdev->ops->probe_client)
11410 return -EOPNOTSUPP;
11411
11412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11413 if (!msg)
11414 return -ENOMEM;
11415
11416 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11417 NL80211_CMD_PROBE_CLIENT);
11418 if (!hdr) {
11419 err = -ENOBUFS;
11420 goto free_msg;
11421 }
11422
11423 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11424
11425 err = rdev_probe_client(rdev, dev, addr, &cookie);
11426 if (err)
11427 goto free_msg;
11428
11429 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11430 NL80211_ATTR_PAD))
11431 goto nla_put_failure;
11432
11433 genlmsg_end(msg, hdr);
11434
11435 return genlmsg_reply(msg, info);
11436
11437 nla_put_failure:
11438 err = -ENOBUFS;
11439 free_msg:
11440 nlmsg_free(msg);
11441 return err;
11442 }
11443
11444 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11445 {
11446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11447 struct cfg80211_beacon_registration *reg, *nreg;
11448 int rv;
11449
11450 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11451 return -EOPNOTSUPP;
11452
11453 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11454 if (!nreg)
11455 return -ENOMEM;
11456
11457 /* First, check if already registered. */
11458 spin_lock_bh(&rdev->beacon_registrations_lock);
11459 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11460 if (reg->nlportid == info->snd_portid) {
11461 rv = -EALREADY;
11462 goto out_err;
11463 }
11464 }
11465 /* Add it to the list */
11466 nreg->nlportid = info->snd_portid;
11467 list_add(&nreg->list, &rdev->beacon_registrations);
11468
11469 spin_unlock_bh(&rdev->beacon_registrations_lock);
11470
11471 return 0;
11472 out_err:
11473 spin_unlock_bh(&rdev->beacon_registrations_lock);
11474 kfree(nreg);
11475 return rv;
11476 }
11477
11478 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11479 {
11480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11481 struct wireless_dev *wdev = info->user_ptr[1];
11482 int err;
11483
11484 if (!rdev->ops->start_p2p_device)
11485 return -EOPNOTSUPP;
11486
11487 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11488 return -EOPNOTSUPP;
11489
11490 if (wdev_running(wdev))
11491 return 0;
11492
11493 if (rfkill_blocked(rdev->rfkill))
11494 return -ERFKILL;
11495
11496 err = rdev_start_p2p_device(rdev, wdev);
11497 if (err)
11498 return err;
11499
11500 wdev->is_running = true;
11501 rdev->opencount++;
11502
11503 return 0;
11504 }
11505
11506 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11507 {
11508 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11509 struct wireless_dev *wdev = info->user_ptr[1];
11510
11511 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11512 return -EOPNOTSUPP;
11513
11514 if (!rdev->ops->stop_p2p_device)
11515 return -EOPNOTSUPP;
11516
11517 cfg80211_stop_p2p_device(rdev, wdev);
11518
11519 return 0;
11520 }
11521
11522 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11523 {
11524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11525 struct wireless_dev *wdev = info->user_ptr[1];
11526 struct cfg80211_nan_conf conf = {};
11527 int err;
11528
11529 if (wdev->iftype != NL80211_IFTYPE_NAN)
11530 return -EOPNOTSUPP;
11531
11532 if (wdev_running(wdev))
11533 return -EEXIST;
11534
11535 if (rfkill_blocked(rdev->rfkill))
11536 return -ERFKILL;
11537
11538 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11539 return -EINVAL;
11540
11541 conf.master_pref =
11542 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11543 if (!conf.master_pref)
11544 return -EINVAL;
11545
11546 if (info->attrs[NL80211_ATTR_BANDS]) {
11547 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11548
11549 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11550 return -EOPNOTSUPP;
11551
11552 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11553 return -EINVAL;
11554
11555 conf.bands = bands;
11556 }
11557
11558 err = rdev_start_nan(rdev, wdev, &conf);
11559 if (err)
11560 return err;
11561
11562 wdev->is_running = true;
11563 rdev->opencount++;
11564
11565 return 0;
11566 }
11567
11568 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11569 {
11570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11571 struct wireless_dev *wdev = info->user_ptr[1];
11572
11573 if (wdev->iftype != NL80211_IFTYPE_NAN)
11574 return -EOPNOTSUPP;
11575
11576 cfg80211_stop_nan(rdev, wdev);
11577
11578 return 0;
11579 }
11580
11581 static int validate_nan_filter(struct nlattr *filter_attr)
11582 {
11583 struct nlattr *attr;
11584 int len = 0, n_entries = 0, rem;
11585
11586 nla_for_each_nested(attr, filter_attr, rem) {
11587 len += nla_len(attr);
11588 n_entries++;
11589 }
11590
11591 if (len >= U8_MAX)
11592 return -EINVAL;
11593
11594 return n_entries;
11595 }
11596
11597 static int handle_nan_filter(struct nlattr *attr_filter,
11598 struct cfg80211_nan_func *func,
11599 bool tx)
11600 {
11601 struct nlattr *attr;
11602 int n_entries, rem, i;
11603 struct cfg80211_nan_func_filter *filter;
11604
11605 n_entries = validate_nan_filter(attr_filter);
11606 if (n_entries < 0)
11607 return n_entries;
11608
11609 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11610
11611 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11612 if (!filter)
11613 return -ENOMEM;
11614
11615 i = 0;
11616 nla_for_each_nested(attr, attr_filter, rem) {
11617 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11618 filter[i].len = nla_len(attr);
11619 i++;
11620 }
11621 if (tx) {
11622 func->num_tx_filters = n_entries;
11623 func->tx_filters = filter;
11624 } else {
11625 func->num_rx_filters = n_entries;
11626 func->rx_filters = filter;
11627 }
11628
11629 return 0;
11630 }
11631
11632 static int nl80211_nan_add_func(struct sk_buff *skb,
11633 struct genl_info *info)
11634 {
11635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11636 struct wireless_dev *wdev = info->user_ptr[1];
11637 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11638 struct cfg80211_nan_func *func;
11639 struct sk_buff *msg = NULL;
11640 void *hdr = NULL;
11641 int err = 0;
11642
11643 if (wdev->iftype != NL80211_IFTYPE_NAN)
11644 return -EOPNOTSUPP;
11645
11646 if (!wdev_running(wdev))
11647 return -ENOTCONN;
11648
11649 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11650 return -EINVAL;
11651
11652 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11653 info->attrs[NL80211_ATTR_NAN_FUNC],
11654 nl80211_nan_func_policy, info->extack);
11655 if (err)
11656 return err;
11657
11658 func = kzalloc(sizeof(*func), GFP_KERNEL);
11659 if (!func)
11660 return -ENOMEM;
11661
11662 func->cookie = wdev->wiphy->cookie_counter++;
11663
11664 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11665 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11666 err = -EINVAL;
11667 goto out;
11668 }
11669
11670
11671 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11672
11673 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11674 err = -EINVAL;
11675 goto out;
11676 }
11677
11678 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11679 sizeof(func->service_id));
11680
11681 func->close_range =
11682 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11683
11684 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11685 func->serv_spec_info_len =
11686 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11687 func->serv_spec_info =
11688 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11689 func->serv_spec_info_len,
11690 GFP_KERNEL);
11691 if (!func->serv_spec_info) {
11692 err = -ENOMEM;
11693 goto out;
11694 }
11695 }
11696
11697 if (tb[NL80211_NAN_FUNC_TTL])
11698 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11699
11700 switch (func->type) {
11701 case NL80211_NAN_FUNC_PUBLISH:
11702 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11703 err = -EINVAL;
11704 goto out;
11705 }
11706
11707 func->publish_type =
11708 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11709 func->publish_bcast =
11710 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11711
11712 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11713 func->publish_bcast) {
11714 err = -EINVAL;
11715 goto out;
11716 }
11717 break;
11718 case NL80211_NAN_FUNC_SUBSCRIBE:
11719 func->subscribe_active =
11720 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11721 break;
11722 case NL80211_NAN_FUNC_FOLLOW_UP:
11723 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11724 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11725 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11726 err = -EINVAL;
11727 goto out;
11728 }
11729
11730 func->followup_id =
11731 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11732 func->followup_reqid =
11733 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11734 memcpy(func->followup_dest.addr,
11735 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11736 sizeof(func->followup_dest.addr));
11737 if (func->ttl) {
11738 err = -EINVAL;
11739 goto out;
11740 }
11741 break;
11742 default:
11743 err = -EINVAL;
11744 goto out;
11745 }
11746
11747 if (tb[NL80211_NAN_FUNC_SRF]) {
11748 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11749
11750 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11751 tb[NL80211_NAN_FUNC_SRF],
11752 nl80211_nan_srf_policy, info->extack);
11753 if (err)
11754 goto out;
11755
11756 func->srf_include =
11757 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11758
11759 if (srf_tb[NL80211_NAN_SRF_BF]) {
11760 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11761 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11762 err = -EINVAL;
11763 goto out;
11764 }
11765
11766 func->srf_bf_len =
11767 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11768 func->srf_bf =
11769 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11770 func->srf_bf_len, GFP_KERNEL);
11771 if (!func->srf_bf) {
11772 err = -ENOMEM;
11773 goto out;
11774 }
11775
11776 func->srf_bf_idx =
11777 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11778 } else {
11779 struct nlattr *attr, *mac_attr =
11780 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11781 int n_entries, rem, i = 0;
11782
11783 if (!mac_attr) {
11784 err = -EINVAL;
11785 goto out;
11786 }
11787
11788 n_entries = validate_acl_mac_addrs(mac_attr);
11789 if (n_entries <= 0) {
11790 err = -EINVAL;
11791 goto out;
11792 }
11793
11794 func->srf_num_macs = n_entries;
11795 func->srf_macs =
11796 kcalloc(n_entries, sizeof(*func->srf_macs),
11797 GFP_KERNEL);
11798 if (!func->srf_macs) {
11799 err = -ENOMEM;
11800 goto out;
11801 }
11802
11803 nla_for_each_nested(attr, mac_attr, rem)
11804 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11805 sizeof(*func->srf_macs));
11806 }
11807 }
11808
11809 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11810 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11811 func, true);
11812 if (err)
11813 goto out;
11814 }
11815
11816 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11817 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11818 func, false);
11819 if (err)
11820 goto out;
11821 }
11822
11823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11824 if (!msg) {
11825 err = -ENOMEM;
11826 goto out;
11827 }
11828
11829 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11830 NL80211_CMD_ADD_NAN_FUNCTION);
11831 /* This can't really happen - we just allocated 4KB */
11832 if (WARN_ON(!hdr)) {
11833 err = -ENOMEM;
11834 goto out;
11835 }
11836
11837 err = rdev_add_nan_func(rdev, wdev, func);
11838 out:
11839 if (err < 0) {
11840 cfg80211_free_nan_func(func);
11841 nlmsg_free(msg);
11842 return err;
11843 }
11844
11845 /* propagate the instance id and cookie to userspace */
11846 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11847 NL80211_ATTR_PAD))
11848 goto nla_put_failure;
11849
11850 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11851 if (!func_attr)
11852 goto nla_put_failure;
11853
11854 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11855 func->instance_id))
11856 goto nla_put_failure;
11857
11858 nla_nest_end(msg, func_attr);
11859
11860 genlmsg_end(msg, hdr);
11861 return genlmsg_reply(msg, info);
11862
11863 nla_put_failure:
11864 nlmsg_free(msg);
11865 return -ENOBUFS;
11866 }
11867
11868 static int nl80211_nan_del_func(struct sk_buff *skb,
11869 struct genl_info *info)
11870 {
11871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11872 struct wireless_dev *wdev = info->user_ptr[1];
11873 u64 cookie;
11874
11875 if (wdev->iftype != NL80211_IFTYPE_NAN)
11876 return -EOPNOTSUPP;
11877
11878 if (!wdev_running(wdev))
11879 return -ENOTCONN;
11880
11881 if (!info->attrs[NL80211_ATTR_COOKIE])
11882 return -EINVAL;
11883
11884 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11885
11886 rdev_del_nan_func(rdev, wdev, cookie);
11887
11888 return 0;
11889 }
11890
11891 static int nl80211_nan_change_config(struct sk_buff *skb,
11892 struct genl_info *info)
11893 {
11894 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11895 struct wireless_dev *wdev = info->user_ptr[1];
11896 struct cfg80211_nan_conf conf = {};
11897 u32 changed = 0;
11898
11899 if (wdev->iftype != NL80211_IFTYPE_NAN)
11900 return -EOPNOTSUPP;
11901
11902 if (!wdev_running(wdev))
11903 return -ENOTCONN;
11904
11905 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11906 conf.master_pref =
11907 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11908 if (conf.master_pref <= 1 || conf.master_pref == 255)
11909 return -EINVAL;
11910
11911 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11912 }
11913
11914 if (info->attrs[NL80211_ATTR_BANDS]) {
11915 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11916
11917 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11918 return -EOPNOTSUPP;
11919
11920 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11921 return -EINVAL;
11922
11923 conf.bands = bands;
11924 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11925 }
11926
11927 if (!changed)
11928 return -EINVAL;
11929
11930 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11931 }
11932
11933 void cfg80211_nan_match(struct wireless_dev *wdev,
11934 struct cfg80211_nan_match_params *match, gfp_t gfp)
11935 {
11936 struct wiphy *wiphy = wdev->wiphy;
11937 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11938 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11939 struct sk_buff *msg;
11940 void *hdr;
11941
11942 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11943 return;
11944
11945 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11946 if (!msg)
11947 return;
11948
11949 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11950 if (!hdr) {
11951 nlmsg_free(msg);
11952 return;
11953 }
11954
11955 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11956 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11957 wdev->netdev->ifindex)) ||
11958 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11959 NL80211_ATTR_PAD))
11960 goto nla_put_failure;
11961
11962 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11963 NL80211_ATTR_PAD) ||
11964 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11965 goto nla_put_failure;
11966
11967 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11968 if (!match_attr)
11969 goto nla_put_failure;
11970
11971 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11972 if (!local_func_attr)
11973 goto nla_put_failure;
11974
11975 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11976 goto nla_put_failure;
11977
11978 nla_nest_end(msg, local_func_attr);
11979
11980 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11981 if (!peer_func_attr)
11982 goto nla_put_failure;
11983
11984 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11985 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11986 goto nla_put_failure;
11987
11988 if (match->info && match->info_len &&
11989 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11990 match->info))
11991 goto nla_put_failure;
11992
11993 nla_nest_end(msg, peer_func_attr);
11994 nla_nest_end(msg, match_attr);
11995 genlmsg_end(msg, hdr);
11996
11997 if (!wdev->owner_nlportid)
11998 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11999 msg, 0, NL80211_MCGRP_NAN, gfp);
12000 else
12001 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12002 wdev->owner_nlportid);
12003
12004 return;
12005
12006 nla_put_failure:
12007 nlmsg_free(msg);
12008 }
12009 EXPORT_SYMBOL(cfg80211_nan_match);
12010
12011 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12012 u8 inst_id,
12013 enum nl80211_nan_func_term_reason reason,
12014 u64 cookie, gfp_t gfp)
12015 {
12016 struct wiphy *wiphy = wdev->wiphy;
12017 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12018 struct sk_buff *msg;
12019 struct nlattr *func_attr;
12020 void *hdr;
12021
12022 if (WARN_ON(!inst_id))
12023 return;
12024
12025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12026 if (!msg)
12027 return;
12028
12029 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12030 if (!hdr) {
12031 nlmsg_free(msg);
12032 return;
12033 }
12034
12035 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12036 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12037 wdev->netdev->ifindex)) ||
12038 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12039 NL80211_ATTR_PAD))
12040 goto nla_put_failure;
12041
12042 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12043 NL80211_ATTR_PAD))
12044 goto nla_put_failure;
12045
12046 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12047 if (!func_attr)
12048 goto nla_put_failure;
12049
12050 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12051 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12052 goto nla_put_failure;
12053
12054 nla_nest_end(msg, func_attr);
12055 genlmsg_end(msg, hdr);
12056
12057 if (!wdev->owner_nlportid)
12058 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12059 msg, 0, NL80211_MCGRP_NAN, gfp);
12060 else
12061 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12062 wdev->owner_nlportid);
12063
12064 return;
12065
12066 nla_put_failure:
12067 nlmsg_free(msg);
12068 }
12069 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12070
12071 static int nl80211_get_protocol_features(struct sk_buff *skb,
12072 struct genl_info *info)
12073 {
12074 void *hdr;
12075 struct sk_buff *msg;
12076
12077 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12078 if (!msg)
12079 return -ENOMEM;
12080
12081 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12082 NL80211_CMD_GET_PROTOCOL_FEATURES);
12083 if (!hdr)
12084 goto nla_put_failure;
12085
12086 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12087 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12088 goto nla_put_failure;
12089
12090 genlmsg_end(msg, hdr);
12091 return genlmsg_reply(msg, info);
12092
12093 nla_put_failure:
12094 kfree_skb(msg);
12095 return -ENOBUFS;
12096 }
12097
12098 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12099 {
12100 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12101 struct cfg80211_update_ft_ies_params ft_params;
12102 struct net_device *dev = info->user_ptr[1];
12103
12104 if (!rdev->ops->update_ft_ies)
12105 return -EOPNOTSUPP;
12106
12107 if (!info->attrs[NL80211_ATTR_MDID] ||
12108 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12109 return -EINVAL;
12110
12111 memset(&ft_params, 0, sizeof(ft_params));
12112 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12113 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12114 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12115
12116 return rdev_update_ft_ies(rdev, dev, &ft_params);
12117 }
12118
12119 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12120 struct genl_info *info)
12121 {
12122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12123 struct wireless_dev *wdev = info->user_ptr[1];
12124 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12125 u16 duration;
12126 int ret;
12127
12128 if (!rdev->ops->crit_proto_start)
12129 return -EOPNOTSUPP;
12130
12131 if (WARN_ON(!rdev->ops->crit_proto_stop))
12132 return -EINVAL;
12133
12134 if (rdev->crit_proto_nlportid)
12135 return -EBUSY;
12136
12137 /* determine protocol if provided */
12138 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12139 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12140
12141 if (proto >= NUM_NL80211_CRIT_PROTO)
12142 return -EINVAL;
12143
12144 /* timeout must be provided */
12145 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12146 return -EINVAL;
12147
12148 duration =
12149 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12150
12151 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12152 return -ERANGE;
12153
12154 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12155 if (!ret)
12156 rdev->crit_proto_nlportid = info->snd_portid;
12157
12158 return ret;
12159 }
12160
12161 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12162 struct genl_info *info)
12163 {
12164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12165 struct wireless_dev *wdev = info->user_ptr[1];
12166
12167 if (!rdev->ops->crit_proto_stop)
12168 return -EOPNOTSUPP;
12169
12170 if (rdev->crit_proto_nlportid) {
12171 rdev->crit_proto_nlportid = 0;
12172 rdev_crit_proto_stop(rdev, wdev);
12173 }
12174 return 0;
12175 }
12176
12177 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12178 {
12179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12180 struct wireless_dev *wdev =
12181 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12182 int i, err;
12183 u32 vid, subcmd;
12184
12185 if (!rdev->wiphy.vendor_commands)
12186 return -EOPNOTSUPP;
12187
12188 if (IS_ERR(wdev)) {
12189 err = PTR_ERR(wdev);
12190 if (err != -EINVAL)
12191 return err;
12192 wdev = NULL;
12193 } else if (wdev->wiphy != &rdev->wiphy) {
12194 return -EINVAL;
12195 }
12196
12197 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12198 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12199 return -EINVAL;
12200
12201 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12202 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12203 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12204 const struct wiphy_vendor_command *vcmd;
12205 void *data = NULL;
12206 int len = 0;
12207
12208 vcmd = &rdev->wiphy.vendor_commands[i];
12209
12210 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12211 continue;
12212
12213 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12214 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12215 if (!wdev)
12216 return -EINVAL;
12217 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12218 !wdev->netdev)
12219 return -EINVAL;
12220
12221 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12222 if (!wdev_running(wdev))
12223 return -ENETDOWN;
12224 }
12225
12226 if (!vcmd->doit)
12227 return -EOPNOTSUPP;
12228 } else {
12229 wdev = NULL;
12230 }
12231
12232 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12233 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12234 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12235 }
12236
12237 rdev->cur_cmd_info = info;
12238 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12239 data, len);
12240 rdev->cur_cmd_info = NULL;
12241 return err;
12242 }
12243
12244 return -EOPNOTSUPP;
12245 }
12246
12247 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12248 struct netlink_callback *cb,
12249 struct cfg80211_registered_device **rdev,
12250 struct wireless_dev **wdev)
12251 {
12252 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12253 u32 vid, subcmd;
12254 unsigned int i;
12255 int vcmd_idx = -1;
12256 int err;
12257 void *data = NULL;
12258 unsigned int data_len = 0;
12259
12260 if (cb->args[0]) {
12261 /* subtract the 1 again here */
12262 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12263 struct wireless_dev *tmp;
12264
12265 if (!wiphy)
12266 return -ENODEV;
12267 *rdev = wiphy_to_rdev(wiphy);
12268 *wdev = NULL;
12269
12270 if (cb->args[1]) {
12271 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12272 if (tmp->identifier == cb->args[1] - 1) {
12273 *wdev = tmp;
12274 break;
12275 }
12276 }
12277 }
12278
12279 /* keep rtnl locked in successful case */
12280 return 0;
12281 }
12282
12283 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12284 nl80211_fam.maxattr, nl80211_policy, NULL);
12285 if (err)
12286 return err;
12287
12288 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12289 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12290 return -EINVAL;
12291
12292 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12293 if (IS_ERR(*wdev))
12294 *wdev = NULL;
12295
12296 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12297 if (IS_ERR(*rdev))
12298 return PTR_ERR(*rdev);
12299
12300 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12301 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12302
12303 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12304 const struct wiphy_vendor_command *vcmd;
12305
12306 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12307
12308 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12309 continue;
12310
12311 if (!vcmd->dumpit)
12312 return -EOPNOTSUPP;
12313
12314 vcmd_idx = i;
12315 break;
12316 }
12317
12318 if (vcmd_idx < 0)
12319 return -EOPNOTSUPP;
12320
12321 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12322 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12323 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12324 }
12325
12326 /* 0 is the first index - add 1 to parse only once */
12327 cb->args[0] = (*rdev)->wiphy_idx + 1;
12328 /* add 1 to know if it was NULL */
12329 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12330 cb->args[2] = vcmd_idx;
12331 cb->args[3] = (unsigned long)data;
12332 cb->args[4] = data_len;
12333
12334 /* keep rtnl locked in successful case */
12335 return 0;
12336 }
12337
12338 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12339 struct netlink_callback *cb)
12340 {
12341 struct cfg80211_registered_device *rdev;
12342 struct wireless_dev *wdev;
12343 unsigned int vcmd_idx;
12344 const struct wiphy_vendor_command *vcmd;
12345 void *data;
12346 int data_len;
12347 int err;
12348 struct nlattr *vendor_data;
12349
12350 rtnl_lock();
12351 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12352 if (err)
12353 goto out;
12354
12355 vcmd_idx = cb->args[2];
12356 data = (void *)cb->args[3];
12357 data_len = cb->args[4];
12358 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12359
12360 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12361 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12362 if (!wdev) {
12363 err = -EINVAL;
12364 goto out;
12365 }
12366 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12367 !wdev->netdev) {
12368 err = -EINVAL;
12369 goto out;
12370 }
12371
12372 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12373 if (!wdev_running(wdev)) {
12374 err = -ENETDOWN;
12375 goto out;
12376 }
12377 }
12378 }
12379
12380 while (1) {
12381 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12382 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12383 NL80211_CMD_VENDOR);
12384 if (!hdr)
12385 break;
12386
12387 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12388 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12389 wdev_id(wdev),
12390 NL80211_ATTR_PAD))) {
12391 genlmsg_cancel(skb, hdr);
12392 break;
12393 }
12394
12395 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12396 if (!vendor_data) {
12397 genlmsg_cancel(skb, hdr);
12398 break;
12399 }
12400
12401 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12402 (unsigned long *)&cb->args[5]);
12403 nla_nest_end(skb, vendor_data);
12404
12405 if (err == -ENOBUFS || err == -ENOENT) {
12406 genlmsg_cancel(skb, hdr);
12407 break;
12408 } else if (err) {
12409 genlmsg_cancel(skb, hdr);
12410 goto out;
12411 }
12412
12413 genlmsg_end(skb, hdr);
12414 }
12415
12416 err = skb->len;
12417 out:
12418 rtnl_unlock();
12419 return err;
12420 }
12421
12422 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12423 enum nl80211_commands cmd,
12424 enum nl80211_attrs attr,
12425 int approxlen)
12426 {
12427 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12428
12429 if (WARN_ON(!rdev->cur_cmd_info))
12430 return NULL;
12431
12432 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12433 rdev->cur_cmd_info->snd_portid,
12434 rdev->cur_cmd_info->snd_seq,
12435 cmd, attr, NULL, GFP_KERNEL);
12436 }
12437 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12438
12439 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12440 {
12441 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12442 void *hdr = ((void **)skb->cb)[1];
12443 struct nlattr *data = ((void **)skb->cb)[2];
12444
12445 /* clear CB data for netlink core to own from now on */
12446 memset(skb->cb, 0, sizeof(skb->cb));
12447
12448 if (WARN_ON(!rdev->cur_cmd_info)) {
12449 kfree_skb(skb);
12450 return -EINVAL;
12451 }
12452
12453 nla_nest_end(skb, data);
12454 genlmsg_end(skb, hdr);
12455 return genlmsg_reply(skb, rdev->cur_cmd_info);
12456 }
12457 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12458
12459 static int nl80211_set_qos_map(struct sk_buff *skb,
12460 struct genl_info *info)
12461 {
12462 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12463 struct cfg80211_qos_map *qos_map = NULL;
12464 struct net_device *dev = info->user_ptr[1];
12465 u8 *pos, len, num_des, des_len, des;
12466 int ret;
12467
12468 if (!rdev->ops->set_qos_map)
12469 return -EOPNOTSUPP;
12470
12471 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12472 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12473 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12474
12475 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12476 len > IEEE80211_QOS_MAP_LEN_MAX)
12477 return -EINVAL;
12478
12479 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12480 if (!qos_map)
12481 return -ENOMEM;
12482
12483 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12484 if (num_des) {
12485 des_len = num_des *
12486 sizeof(struct cfg80211_dscp_exception);
12487 memcpy(qos_map->dscp_exception, pos, des_len);
12488 qos_map->num_des = num_des;
12489 for (des = 0; des < num_des; des++) {
12490 if (qos_map->dscp_exception[des].up > 7) {
12491 kfree(qos_map);
12492 return -EINVAL;
12493 }
12494 }
12495 pos += des_len;
12496 }
12497 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12498 }
12499
12500 wdev_lock(dev->ieee80211_ptr);
12501 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12502 if (!ret)
12503 ret = rdev_set_qos_map(rdev, dev, qos_map);
12504 wdev_unlock(dev->ieee80211_ptr);
12505
12506 kfree(qos_map);
12507 return ret;
12508 }
12509
12510 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12511 {
12512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12513 struct net_device *dev = info->user_ptr[1];
12514 struct wireless_dev *wdev = dev->ieee80211_ptr;
12515 const u8 *peer;
12516 u8 tsid, up;
12517 u16 admitted_time = 0;
12518 int err;
12519
12520 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12521 return -EOPNOTSUPP;
12522
12523 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12524 !info->attrs[NL80211_ATTR_USER_PRIO])
12525 return -EINVAL;
12526
12527 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12528 if (tsid >= IEEE80211_NUM_TIDS)
12529 return -EINVAL;
12530
12531 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12532 if (up >= IEEE80211_NUM_UPS)
12533 return -EINVAL;
12534
12535 /* WMM uses TIDs 0-7 even for TSPEC */
12536 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12537 /* TODO: handle 802.11 TSPEC/admission control
12538 * need more attributes for that (e.g. BA session requirement);
12539 * change the WMM adminssion test above to allow both then
12540 */
12541 return -EINVAL;
12542 }
12543
12544 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12545
12546 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12547 admitted_time =
12548 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12549 if (!admitted_time)
12550 return -EINVAL;
12551 }
12552
12553 wdev_lock(wdev);
12554 switch (wdev->iftype) {
12555 case NL80211_IFTYPE_STATION:
12556 case NL80211_IFTYPE_P2P_CLIENT:
12557 if (wdev->current_bss)
12558 break;
12559 err = -ENOTCONN;
12560 goto out;
12561 default:
12562 err = -EOPNOTSUPP;
12563 goto out;
12564 }
12565
12566 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12567
12568 out:
12569 wdev_unlock(wdev);
12570 return err;
12571 }
12572
12573 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12574 {
12575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12576 struct net_device *dev = info->user_ptr[1];
12577 struct wireless_dev *wdev = dev->ieee80211_ptr;
12578 const u8 *peer;
12579 u8 tsid;
12580 int err;
12581
12582 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12583 return -EINVAL;
12584
12585 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12586 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12587
12588 wdev_lock(wdev);
12589 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12590 wdev_unlock(wdev);
12591
12592 return err;
12593 }
12594
12595 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12596 struct genl_info *info)
12597 {
12598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12599 struct net_device *dev = info->user_ptr[1];
12600 struct wireless_dev *wdev = dev->ieee80211_ptr;
12601 struct cfg80211_chan_def chandef = {};
12602 const u8 *addr;
12603 u8 oper_class;
12604 int err;
12605
12606 if (!rdev->ops->tdls_channel_switch ||
12607 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12608 return -EOPNOTSUPP;
12609
12610 switch (dev->ieee80211_ptr->iftype) {
12611 case NL80211_IFTYPE_STATION:
12612 case NL80211_IFTYPE_P2P_CLIENT:
12613 break;
12614 default:
12615 return -EOPNOTSUPP;
12616 }
12617
12618 if (!info->attrs[NL80211_ATTR_MAC] ||
12619 !info->attrs[NL80211_ATTR_OPER_CLASS])
12620 return -EINVAL;
12621
12622 err = nl80211_parse_chandef(rdev, info, &chandef);
12623 if (err)
12624 return err;
12625
12626 /*
12627 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12628 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12629 * specification is not defined for them.
12630 */
12631 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12632 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12633 chandef.width != NL80211_CHAN_WIDTH_20)
12634 return -EINVAL;
12635
12636 /* we will be active on the TDLS link */
12637 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12638 wdev->iftype))
12639 return -EINVAL;
12640
12641 /* don't allow switching to DFS channels */
12642 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12643 return -EINVAL;
12644
12645 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12646 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12647
12648 wdev_lock(wdev);
12649 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12650 wdev_unlock(wdev);
12651
12652 return err;
12653 }
12654
12655 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12656 struct genl_info *info)
12657 {
12658 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12659 struct net_device *dev = info->user_ptr[1];
12660 struct wireless_dev *wdev = dev->ieee80211_ptr;
12661 const u8 *addr;
12662
12663 if (!rdev->ops->tdls_channel_switch ||
12664 !rdev->ops->tdls_cancel_channel_switch ||
12665 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12666 return -EOPNOTSUPP;
12667
12668 switch (dev->ieee80211_ptr->iftype) {
12669 case NL80211_IFTYPE_STATION:
12670 case NL80211_IFTYPE_P2P_CLIENT:
12671 break;
12672 default:
12673 return -EOPNOTSUPP;
12674 }
12675
12676 if (!info->attrs[NL80211_ATTR_MAC])
12677 return -EINVAL;
12678
12679 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12680
12681 wdev_lock(wdev);
12682 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12683 wdev_unlock(wdev);
12684
12685 return 0;
12686 }
12687
12688 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12689 struct genl_info *info)
12690 {
12691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12692 struct net_device *dev = info->user_ptr[1];
12693 struct wireless_dev *wdev = dev->ieee80211_ptr;
12694 const struct nlattr *nla;
12695 bool enabled;
12696
12697 if (!rdev->ops->set_multicast_to_unicast)
12698 return -EOPNOTSUPP;
12699
12700 if (wdev->iftype != NL80211_IFTYPE_AP &&
12701 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12702 return -EOPNOTSUPP;
12703
12704 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12705 enabled = nla_get_flag(nla);
12706
12707 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12708 }
12709
12710 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12711 {
12712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12713 struct net_device *dev = info->user_ptr[1];
12714 struct wireless_dev *wdev = dev->ieee80211_ptr;
12715 struct cfg80211_pmk_conf pmk_conf = {};
12716 int ret;
12717
12718 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12719 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12720 return -EOPNOTSUPP;
12721
12722 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12723 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12724 return -EOPNOTSUPP;
12725
12726 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12727 return -EINVAL;
12728
12729 wdev_lock(wdev);
12730 if (!wdev->current_bss) {
12731 ret = -ENOTCONN;
12732 goto out;
12733 }
12734
12735 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12736 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12737 ret = -EINVAL;
12738 goto out;
12739 }
12740
12741 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12742 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12743 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12744 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12745 ret = -EINVAL;
12746 goto out;
12747 }
12748
12749 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12750 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12751
12752 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12753 ret = -EINVAL;
12754 goto out;
12755 }
12756
12757 pmk_conf.pmk_r0_name =
12758 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12759 }
12760
12761 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12762 out:
12763 wdev_unlock(wdev);
12764 return ret;
12765 }
12766
12767 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12768 {
12769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12770 struct net_device *dev = info->user_ptr[1];
12771 struct wireless_dev *wdev = dev->ieee80211_ptr;
12772 const u8 *aa;
12773 int ret;
12774
12775 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12776 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12777 return -EOPNOTSUPP;
12778
12779 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12780 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12781 return -EOPNOTSUPP;
12782
12783 if (!info->attrs[NL80211_ATTR_MAC])
12784 return -EINVAL;
12785
12786 wdev_lock(wdev);
12787 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12788 ret = rdev_del_pmk(rdev, dev, aa);
12789 wdev_unlock(wdev);
12790
12791 return ret;
12792 }
12793
12794 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12795 {
12796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12797 struct net_device *dev = info->user_ptr[1];
12798 struct cfg80211_external_auth_params params;
12799
12800 if (!rdev->ops->external_auth)
12801 return -EOPNOTSUPP;
12802
12803 if (!info->attrs[NL80211_ATTR_SSID])
12804 return -EINVAL;
12805
12806 if (!info->attrs[NL80211_ATTR_BSSID])
12807 return -EINVAL;
12808
12809 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12810 return -EINVAL;
12811
12812 memset(&params, 0, sizeof(params));
12813
12814 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12815 if (params.ssid.ssid_len == 0 ||
12816 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12817 return -EINVAL;
12818 memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
12819 params.ssid.ssid_len);
12820
12821 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
12822 ETH_ALEN);
12823
12824 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12825
12826 return rdev_external_auth(rdev, dev, &params);
12827 }
12828
12829 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
12830 {
12831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12832 struct net_device *dev = info->user_ptr[1];
12833 struct wireless_dev *wdev = dev->ieee80211_ptr;
12834 const u8 *buf;
12835 size_t len;
12836 u8 *dest;
12837 u16 proto;
12838 bool noencrypt;
12839 int err;
12840
12841 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12842 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
12843 return -EOPNOTSUPP;
12844
12845 if (!rdev->ops->tx_control_port)
12846 return -EOPNOTSUPP;
12847
12848 if (!info->attrs[NL80211_ATTR_FRAME] ||
12849 !info->attrs[NL80211_ATTR_MAC] ||
12850 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
12851 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
12852 return -EINVAL;
12853 }
12854
12855 wdev_lock(wdev);
12856
12857 switch (wdev->iftype) {
12858 case NL80211_IFTYPE_AP:
12859 case NL80211_IFTYPE_P2P_GO:
12860 case NL80211_IFTYPE_MESH_POINT:
12861 break;
12862 case NL80211_IFTYPE_ADHOC:
12863 case NL80211_IFTYPE_STATION:
12864 case NL80211_IFTYPE_P2P_CLIENT:
12865 if (wdev->current_bss)
12866 break;
12867 err = -ENOTCONN;
12868 goto out;
12869 default:
12870 err = -EOPNOTSUPP;
12871 goto out;
12872 }
12873
12874 wdev_unlock(wdev);
12875
12876 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12877 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12878 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
12879 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
12880 noencrypt =
12881 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
12882
12883 return rdev_tx_control_port(rdev, dev, buf, len,
12884 dest, cpu_to_be16(proto), noencrypt);
12885
12886 out:
12887 wdev_unlock(wdev);
12888 return err;
12889 }
12890
12891 #define NL80211_FLAG_NEED_WIPHY 0x01
12892 #define NL80211_FLAG_NEED_NETDEV 0x02
12893 #define NL80211_FLAG_NEED_RTNL 0x04
12894 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12895 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12896 NL80211_FLAG_CHECK_NETDEV_UP)
12897 #define NL80211_FLAG_NEED_WDEV 0x10
12898 /* If a netdev is associated, it must be UP, P2P must be started */
12899 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12900 NL80211_FLAG_CHECK_NETDEV_UP)
12901 #define NL80211_FLAG_CLEAR_SKB 0x20
12902
12903 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12904 struct genl_info *info)
12905 {
12906 struct cfg80211_registered_device *rdev;
12907 struct wireless_dev *wdev;
12908 struct net_device *dev;
12909 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12910
12911 if (rtnl)
12912 rtnl_lock();
12913
12914 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12915 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12916 if (IS_ERR(rdev)) {
12917 if (rtnl)
12918 rtnl_unlock();
12919 return PTR_ERR(rdev);
12920 }
12921 info->user_ptr[0] = rdev;
12922 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12923 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12924 ASSERT_RTNL();
12925
12926 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12927 info->attrs);
12928 if (IS_ERR(wdev)) {
12929 if (rtnl)
12930 rtnl_unlock();
12931 return PTR_ERR(wdev);
12932 }
12933
12934 dev = wdev->netdev;
12935 rdev = wiphy_to_rdev(wdev->wiphy);
12936
12937 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12938 if (!dev) {
12939 if (rtnl)
12940 rtnl_unlock();
12941 return -EINVAL;
12942 }
12943
12944 info->user_ptr[1] = dev;
12945 } else {
12946 info->user_ptr[1] = wdev;
12947 }
12948
12949 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12950 !wdev_running(wdev)) {
12951 if (rtnl)
12952 rtnl_unlock();
12953 return -ENETDOWN;
12954 }
12955
12956 if (dev)
12957 dev_hold(dev);
12958
12959 info->user_ptr[0] = rdev;
12960 }
12961
12962 return 0;
12963 }
12964
12965 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12966 struct genl_info *info)
12967 {
12968 if (info->user_ptr[1]) {
12969 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12970 struct wireless_dev *wdev = info->user_ptr[1];
12971
12972 if (wdev->netdev)
12973 dev_put(wdev->netdev);
12974 } else {
12975 dev_put(info->user_ptr[1]);
12976 }
12977 }
12978
12979 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12980 rtnl_unlock();
12981
12982 /* If needed, clear the netlink message payload from the SKB
12983 * as it might contain key data that shouldn't stick around on
12984 * the heap after the SKB is freed. The netlink message header
12985 * is still needed for further processing, so leave it intact.
12986 */
12987 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12988 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12989
12990 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12991 }
12992 }
12993
12994 static const struct genl_ops nl80211_ops[] = {
12995 {
12996 .cmd = NL80211_CMD_GET_WIPHY,
12997 .doit = nl80211_get_wiphy,
12998 .dumpit = nl80211_dump_wiphy,
12999 .done = nl80211_dump_wiphy_done,
13000 .policy = nl80211_policy,
13001 /* can be retrieved by unprivileged users */
13002 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13003 NL80211_FLAG_NEED_RTNL,
13004 },
13005 {
13006 .cmd = NL80211_CMD_SET_WIPHY,
13007 .doit = nl80211_set_wiphy,
13008 .policy = nl80211_policy,
13009 .flags = GENL_UNS_ADMIN_PERM,
13010 .internal_flags = NL80211_FLAG_NEED_RTNL,
13011 },
13012 {
13013 .cmd = NL80211_CMD_GET_INTERFACE,
13014 .doit = nl80211_get_interface,
13015 .dumpit = nl80211_dump_interface,
13016 .policy = nl80211_policy,
13017 /* can be retrieved by unprivileged users */
13018 .internal_flags = NL80211_FLAG_NEED_WDEV |
13019 NL80211_FLAG_NEED_RTNL,
13020 },
13021 {
13022 .cmd = NL80211_CMD_SET_INTERFACE,
13023 .doit = nl80211_set_interface,
13024 .policy = nl80211_policy,
13025 .flags = GENL_UNS_ADMIN_PERM,
13026 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13027 NL80211_FLAG_NEED_RTNL,
13028 },
13029 {
13030 .cmd = NL80211_CMD_NEW_INTERFACE,
13031 .doit = nl80211_new_interface,
13032 .policy = nl80211_policy,
13033 .flags = GENL_UNS_ADMIN_PERM,
13034 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13035 NL80211_FLAG_NEED_RTNL,
13036 },
13037 {
13038 .cmd = NL80211_CMD_DEL_INTERFACE,
13039 .doit = nl80211_del_interface,
13040 .policy = nl80211_policy,
13041 .flags = GENL_UNS_ADMIN_PERM,
13042 .internal_flags = NL80211_FLAG_NEED_WDEV |
13043 NL80211_FLAG_NEED_RTNL,
13044 },
13045 {
13046 .cmd = NL80211_CMD_GET_KEY,
13047 .doit = nl80211_get_key,
13048 .policy = nl80211_policy,
13049 .flags = GENL_UNS_ADMIN_PERM,
13050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13051 NL80211_FLAG_NEED_RTNL,
13052 },
13053 {
13054 .cmd = NL80211_CMD_SET_KEY,
13055 .doit = nl80211_set_key,
13056 .policy = nl80211_policy,
13057 .flags = GENL_UNS_ADMIN_PERM,
13058 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13059 NL80211_FLAG_NEED_RTNL |
13060 NL80211_FLAG_CLEAR_SKB,
13061 },
13062 {
13063 .cmd = NL80211_CMD_NEW_KEY,
13064 .doit = nl80211_new_key,
13065 .policy = nl80211_policy,
13066 .flags = GENL_UNS_ADMIN_PERM,
13067 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13068 NL80211_FLAG_NEED_RTNL |
13069 NL80211_FLAG_CLEAR_SKB,
13070 },
13071 {
13072 .cmd = NL80211_CMD_DEL_KEY,
13073 .doit = nl80211_del_key,
13074 .policy = nl80211_policy,
13075 .flags = GENL_UNS_ADMIN_PERM,
13076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13077 NL80211_FLAG_NEED_RTNL,
13078 },
13079 {
13080 .cmd = NL80211_CMD_SET_BEACON,
13081 .policy = nl80211_policy,
13082 .flags = GENL_UNS_ADMIN_PERM,
13083 .doit = nl80211_set_beacon,
13084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13085 NL80211_FLAG_NEED_RTNL,
13086 },
13087 {
13088 .cmd = NL80211_CMD_START_AP,
13089 .policy = nl80211_policy,
13090 .flags = GENL_UNS_ADMIN_PERM,
13091 .doit = nl80211_start_ap,
13092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13093 NL80211_FLAG_NEED_RTNL,
13094 },
13095 {
13096 .cmd = NL80211_CMD_STOP_AP,
13097 .policy = nl80211_policy,
13098 .flags = GENL_UNS_ADMIN_PERM,
13099 .doit = nl80211_stop_ap,
13100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13101 NL80211_FLAG_NEED_RTNL,
13102 },
13103 {
13104 .cmd = NL80211_CMD_GET_STATION,
13105 .doit = nl80211_get_station,
13106 .dumpit = nl80211_dump_station,
13107 .policy = nl80211_policy,
13108 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13109 NL80211_FLAG_NEED_RTNL,
13110 },
13111 {
13112 .cmd = NL80211_CMD_SET_STATION,
13113 .doit = nl80211_set_station,
13114 .policy = nl80211_policy,
13115 .flags = GENL_UNS_ADMIN_PERM,
13116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13117 NL80211_FLAG_NEED_RTNL,
13118 },
13119 {
13120 .cmd = NL80211_CMD_NEW_STATION,
13121 .doit = nl80211_new_station,
13122 .policy = nl80211_policy,
13123 .flags = GENL_UNS_ADMIN_PERM,
13124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13125 NL80211_FLAG_NEED_RTNL,
13126 },
13127 {
13128 .cmd = NL80211_CMD_DEL_STATION,
13129 .doit = nl80211_del_station,
13130 .policy = nl80211_policy,
13131 .flags = GENL_UNS_ADMIN_PERM,
13132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13133 NL80211_FLAG_NEED_RTNL,
13134 },
13135 {
13136 .cmd = NL80211_CMD_GET_MPATH,
13137 .doit = nl80211_get_mpath,
13138 .dumpit = nl80211_dump_mpath,
13139 .policy = nl80211_policy,
13140 .flags = GENL_UNS_ADMIN_PERM,
13141 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13142 NL80211_FLAG_NEED_RTNL,
13143 },
13144 {
13145 .cmd = NL80211_CMD_GET_MPP,
13146 .doit = nl80211_get_mpp,
13147 .dumpit = nl80211_dump_mpp,
13148 .policy = nl80211_policy,
13149 .flags = GENL_UNS_ADMIN_PERM,
13150 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13151 NL80211_FLAG_NEED_RTNL,
13152 },
13153 {
13154 .cmd = NL80211_CMD_SET_MPATH,
13155 .doit = nl80211_set_mpath,
13156 .policy = nl80211_policy,
13157 .flags = GENL_UNS_ADMIN_PERM,
13158 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13159 NL80211_FLAG_NEED_RTNL,
13160 },
13161 {
13162 .cmd = NL80211_CMD_NEW_MPATH,
13163 .doit = nl80211_new_mpath,
13164 .policy = nl80211_policy,
13165 .flags = GENL_UNS_ADMIN_PERM,
13166 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13167 NL80211_FLAG_NEED_RTNL,
13168 },
13169 {
13170 .cmd = NL80211_CMD_DEL_MPATH,
13171 .doit = nl80211_del_mpath,
13172 .policy = nl80211_policy,
13173 .flags = GENL_UNS_ADMIN_PERM,
13174 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13175 NL80211_FLAG_NEED_RTNL,
13176 },
13177 {
13178 .cmd = NL80211_CMD_SET_BSS,
13179 .doit = nl80211_set_bss,
13180 .policy = nl80211_policy,
13181 .flags = GENL_UNS_ADMIN_PERM,
13182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13183 NL80211_FLAG_NEED_RTNL,
13184 },
13185 {
13186 .cmd = NL80211_CMD_GET_REG,
13187 .doit = nl80211_get_reg_do,
13188 .dumpit = nl80211_get_reg_dump,
13189 .policy = nl80211_policy,
13190 .internal_flags = NL80211_FLAG_NEED_RTNL,
13191 /* can be retrieved by unprivileged users */
13192 },
13193 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13194 {
13195 .cmd = NL80211_CMD_SET_REG,
13196 .doit = nl80211_set_reg,
13197 .policy = nl80211_policy,
13198 .flags = GENL_ADMIN_PERM,
13199 .internal_flags = NL80211_FLAG_NEED_RTNL,
13200 },
13201 #endif
13202 {
13203 .cmd = NL80211_CMD_REQ_SET_REG,
13204 .doit = nl80211_req_set_reg,
13205 .policy = nl80211_policy,
13206 .flags = GENL_ADMIN_PERM,
13207 },
13208 {
13209 .cmd = NL80211_CMD_RELOAD_REGDB,
13210 .doit = nl80211_reload_regdb,
13211 .policy = nl80211_policy,
13212 .flags = GENL_ADMIN_PERM,
13213 },
13214 {
13215 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13216 .doit = nl80211_get_mesh_config,
13217 .policy = nl80211_policy,
13218 /* can be retrieved by unprivileged users */
13219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13220 NL80211_FLAG_NEED_RTNL,
13221 },
13222 {
13223 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13224 .doit = nl80211_update_mesh_config,
13225 .policy = nl80211_policy,
13226 .flags = GENL_UNS_ADMIN_PERM,
13227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13228 NL80211_FLAG_NEED_RTNL,
13229 },
13230 {
13231 .cmd = NL80211_CMD_TRIGGER_SCAN,
13232 .doit = nl80211_trigger_scan,
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_ABORT_SCAN,
13240 .doit = nl80211_abort_scan,
13241 .policy = nl80211_policy,
13242 .flags = GENL_UNS_ADMIN_PERM,
13243 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13244 NL80211_FLAG_NEED_RTNL,
13245 },
13246 {
13247 .cmd = NL80211_CMD_GET_SCAN,
13248 .policy = nl80211_policy,
13249 .dumpit = nl80211_dump_scan,
13250 },
13251 {
13252 .cmd = NL80211_CMD_START_SCHED_SCAN,
13253 .doit = nl80211_start_sched_scan,
13254 .policy = nl80211_policy,
13255 .flags = GENL_UNS_ADMIN_PERM,
13256 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13257 NL80211_FLAG_NEED_RTNL,
13258 },
13259 {
13260 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13261 .doit = nl80211_stop_sched_scan,
13262 .policy = nl80211_policy,
13263 .flags = GENL_UNS_ADMIN_PERM,
13264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13265 NL80211_FLAG_NEED_RTNL,
13266 },
13267 {
13268 .cmd = NL80211_CMD_AUTHENTICATE,
13269 .doit = nl80211_authenticate,
13270 .policy = nl80211_policy,
13271 .flags = GENL_UNS_ADMIN_PERM,
13272 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13273 NL80211_FLAG_NEED_RTNL |
13274 NL80211_FLAG_CLEAR_SKB,
13275 },
13276 {
13277 .cmd = NL80211_CMD_ASSOCIATE,
13278 .doit = nl80211_associate,
13279 .policy = nl80211_policy,
13280 .flags = GENL_UNS_ADMIN_PERM,
13281 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13282 NL80211_FLAG_NEED_RTNL,
13283 },
13284 {
13285 .cmd = NL80211_CMD_DEAUTHENTICATE,
13286 .doit = nl80211_deauthenticate,
13287 .policy = nl80211_policy,
13288 .flags = GENL_UNS_ADMIN_PERM,
13289 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13290 NL80211_FLAG_NEED_RTNL,
13291 },
13292 {
13293 .cmd = NL80211_CMD_DISASSOCIATE,
13294 .doit = nl80211_disassociate,
13295 .policy = nl80211_policy,
13296 .flags = GENL_UNS_ADMIN_PERM,
13297 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13298 NL80211_FLAG_NEED_RTNL,
13299 },
13300 {
13301 .cmd = NL80211_CMD_JOIN_IBSS,
13302 .doit = nl80211_join_ibss,
13303 .policy = nl80211_policy,
13304 .flags = GENL_UNS_ADMIN_PERM,
13305 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13306 NL80211_FLAG_NEED_RTNL,
13307 },
13308 {
13309 .cmd = NL80211_CMD_LEAVE_IBSS,
13310 .doit = nl80211_leave_ibss,
13311 .policy = nl80211_policy,
13312 .flags = GENL_UNS_ADMIN_PERM,
13313 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13314 NL80211_FLAG_NEED_RTNL,
13315 },
13316 #ifdef CONFIG_NL80211_TESTMODE
13317 {
13318 .cmd = NL80211_CMD_TESTMODE,
13319 .doit = nl80211_testmode_do,
13320 .dumpit = nl80211_testmode_dump,
13321 .policy = nl80211_policy,
13322 .flags = GENL_UNS_ADMIN_PERM,
13323 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13324 NL80211_FLAG_NEED_RTNL,
13325 },
13326 #endif
13327 {
13328 .cmd = NL80211_CMD_CONNECT,
13329 .doit = nl80211_connect,
13330 .policy = nl80211_policy,
13331 .flags = GENL_UNS_ADMIN_PERM,
13332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13333 NL80211_FLAG_NEED_RTNL,
13334 },
13335 {
13336 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13337 .doit = nl80211_update_connect_params,
13338 .policy = nl80211_policy,
13339 .flags = GENL_ADMIN_PERM,
13340 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13341 NL80211_FLAG_NEED_RTNL,
13342 },
13343 {
13344 .cmd = NL80211_CMD_DISCONNECT,
13345 .doit = nl80211_disconnect,
13346 .policy = nl80211_policy,
13347 .flags = GENL_UNS_ADMIN_PERM,
13348 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13349 NL80211_FLAG_NEED_RTNL,
13350 },
13351 {
13352 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13353 .doit = nl80211_wiphy_netns,
13354 .policy = nl80211_policy,
13355 .flags = GENL_UNS_ADMIN_PERM,
13356 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13357 NL80211_FLAG_NEED_RTNL,
13358 },
13359 {
13360 .cmd = NL80211_CMD_GET_SURVEY,
13361 .policy = nl80211_policy,
13362 .dumpit = nl80211_dump_survey,
13363 },
13364 {
13365 .cmd = NL80211_CMD_SET_PMKSA,
13366 .doit = nl80211_setdel_pmksa,
13367 .policy = nl80211_policy,
13368 .flags = GENL_UNS_ADMIN_PERM,
13369 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13370 NL80211_FLAG_NEED_RTNL,
13371 },
13372 {
13373 .cmd = NL80211_CMD_DEL_PMKSA,
13374 .doit = nl80211_setdel_pmksa,
13375 .policy = nl80211_policy,
13376 .flags = GENL_UNS_ADMIN_PERM,
13377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13378 NL80211_FLAG_NEED_RTNL,
13379 },
13380 {
13381 .cmd = NL80211_CMD_FLUSH_PMKSA,
13382 .doit = nl80211_flush_pmksa,
13383 .policy = nl80211_policy,
13384 .flags = GENL_UNS_ADMIN_PERM,
13385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13386 NL80211_FLAG_NEED_RTNL,
13387 },
13388 {
13389 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13390 .doit = nl80211_remain_on_channel,
13391 .policy = nl80211_policy,
13392 .flags = GENL_UNS_ADMIN_PERM,
13393 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13394 NL80211_FLAG_NEED_RTNL,
13395 },
13396 {
13397 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13398 .doit = nl80211_cancel_remain_on_channel,
13399 .policy = nl80211_policy,
13400 .flags = GENL_UNS_ADMIN_PERM,
13401 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13402 NL80211_FLAG_NEED_RTNL,
13403 },
13404 {
13405 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13406 .doit = nl80211_set_tx_bitrate_mask,
13407 .policy = nl80211_policy,
13408 .flags = GENL_UNS_ADMIN_PERM,
13409 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13410 NL80211_FLAG_NEED_RTNL,
13411 },
13412 {
13413 .cmd = NL80211_CMD_REGISTER_FRAME,
13414 .doit = nl80211_register_mgmt,
13415 .policy = nl80211_policy,
13416 .flags = GENL_UNS_ADMIN_PERM,
13417 .internal_flags = NL80211_FLAG_NEED_WDEV |
13418 NL80211_FLAG_NEED_RTNL,
13419 },
13420 {
13421 .cmd = NL80211_CMD_FRAME,
13422 .doit = nl80211_tx_mgmt,
13423 .policy = nl80211_policy,
13424 .flags = GENL_UNS_ADMIN_PERM,
13425 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13426 NL80211_FLAG_NEED_RTNL,
13427 },
13428 {
13429 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13430 .doit = nl80211_tx_mgmt_cancel_wait,
13431 .policy = nl80211_policy,
13432 .flags = GENL_UNS_ADMIN_PERM,
13433 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13434 NL80211_FLAG_NEED_RTNL,
13435 },
13436 {
13437 .cmd = NL80211_CMD_SET_POWER_SAVE,
13438 .doit = nl80211_set_power_save,
13439 .policy = nl80211_policy,
13440 .flags = GENL_UNS_ADMIN_PERM,
13441 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13442 NL80211_FLAG_NEED_RTNL,
13443 },
13444 {
13445 .cmd = NL80211_CMD_GET_POWER_SAVE,
13446 .doit = nl80211_get_power_save,
13447 .policy = nl80211_policy,
13448 /* can be retrieved by unprivileged users */
13449 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13450 NL80211_FLAG_NEED_RTNL,
13451 },
13452 {
13453 .cmd = NL80211_CMD_SET_CQM,
13454 .doit = nl80211_set_cqm,
13455 .policy = nl80211_policy,
13456 .flags = GENL_UNS_ADMIN_PERM,
13457 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13458 NL80211_FLAG_NEED_RTNL,
13459 },
13460 {
13461 .cmd = NL80211_CMD_SET_CHANNEL,
13462 .doit = nl80211_set_channel,
13463 .policy = nl80211_policy,
13464 .flags = GENL_UNS_ADMIN_PERM,
13465 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13466 NL80211_FLAG_NEED_RTNL,
13467 },
13468 {
13469 .cmd = NL80211_CMD_SET_WDS_PEER,
13470 .doit = nl80211_set_wds_peer,
13471 .policy = nl80211_policy,
13472 .flags = GENL_UNS_ADMIN_PERM,
13473 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13474 NL80211_FLAG_NEED_RTNL,
13475 },
13476 {
13477 .cmd = NL80211_CMD_JOIN_MESH,
13478 .doit = nl80211_join_mesh,
13479 .policy = nl80211_policy,
13480 .flags = GENL_UNS_ADMIN_PERM,
13481 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13482 NL80211_FLAG_NEED_RTNL,
13483 },
13484 {
13485 .cmd = NL80211_CMD_LEAVE_MESH,
13486 .doit = nl80211_leave_mesh,
13487 .policy = nl80211_policy,
13488 .flags = GENL_UNS_ADMIN_PERM,
13489 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13490 NL80211_FLAG_NEED_RTNL,
13491 },
13492 {
13493 .cmd = NL80211_CMD_JOIN_OCB,
13494 .doit = nl80211_join_ocb,
13495 .policy = nl80211_policy,
13496 .flags = GENL_UNS_ADMIN_PERM,
13497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13498 NL80211_FLAG_NEED_RTNL,
13499 },
13500 {
13501 .cmd = NL80211_CMD_LEAVE_OCB,
13502 .doit = nl80211_leave_ocb,
13503 .policy = nl80211_policy,
13504 .flags = GENL_UNS_ADMIN_PERM,
13505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13506 NL80211_FLAG_NEED_RTNL,
13507 },
13508 #ifdef CONFIG_PM
13509 {
13510 .cmd = NL80211_CMD_GET_WOWLAN,
13511 .doit = nl80211_get_wowlan,
13512 .policy = nl80211_policy,
13513 /* can be retrieved by unprivileged users */
13514 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13515 NL80211_FLAG_NEED_RTNL,
13516 },
13517 {
13518 .cmd = NL80211_CMD_SET_WOWLAN,
13519 .doit = nl80211_set_wowlan,
13520 .policy = nl80211_policy,
13521 .flags = GENL_UNS_ADMIN_PERM,
13522 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13523 NL80211_FLAG_NEED_RTNL,
13524 },
13525 #endif
13526 {
13527 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13528 .doit = nl80211_set_rekey_data,
13529 .policy = nl80211_policy,
13530 .flags = GENL_UNS_ADMIN_PERM,
13531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13532 NL80211_FLAG_NEED_RTNL |
13533 NL80211_FLAG_CLEAR_SKB,
13534 },
13535 {
13536 .cmd = NL80211_CMD_TDLS_MGMT,
13537 .doit = nl80211_tdls_mgmt,
13538 .policy = nl80211_policy,
13539 .flags = GENL_UNS_ADMIN_PERM,
13540 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13541 NL80211_FLAG_NEED_RTNL,
13542 },
13543 {
13544 .cmd = NL80211_CMD_TDLS_OPER,
13545 .doit = nl80211_tdls_oper,
13546 .policy = nl80211_policy,
13547 .flags = GENL_UNS_ADMIN_PERM,
13548 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13549 NL80211_FLAG_NEED_RTNL,
13550 },
13551 {
13552 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13553 .doit = nl80211_register_unexpected_frame,
13554 .policy = nl80211_policy,
13555 .flags = GENL_UNS_ADMIN_PERM,
13556 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13557 NL80211_FLAG_NEED_RTNL,
13558 },
13559 {
13560 .cmd = NL80211_CMD_PROBE_CLIENT,
13561 .doit = nl80211_probe_client,
13562 .policy = nl80211_policy,
13563 .flags = GENL_UNS_ADMIN_PERM,
13564 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13565 NL80211_FLAG_NEED_RTNL,
13566 },
13567 {
13568 .cmd = NL80211_CMD_REGISTER_BEACONS,
13569 .doit = nl80211_register_beacons,
13570 .policy = nl80211_policy,
13571 .flags = GENL_UNS_ADMIN_PERM,
13572 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13573 NL80211_FLAG_NEED_RTNL,
13574 },
13575 {
13576 .cmd = NL80211_CMD_SET_NOACK_MAP,
13577 .doit = nl80211_set_noack_map,
13578 .policy = nl80211_policy,
13579 .flags = GENL_UNS_ADMIN_PERM,
13580 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13581 NL80211_FLAG_NEED_RTNL,
13582 },
13583 {
13584 .cmd = NL80211_CMD_START_P2P_DEVICE,
13585 .doit = nl80211_start_p2p_device,
13586 .policy = nl80211_policy,
13587 .flags = GENL_UNS_ADMIN_PERM,
13588 .internal_flags = NL80211_FLAG_NEED_WDEV |
13589 NL80211_FLAG_NEED_RTNL,
13590 },
13591 {
13592 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13593 .doit = nl80211_stop_p2p_device,
13594 .policy = nl80211_policy,
13595 .flags = GENL_UNS_ADMIN_PERM,
13596 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13597 NL80211_FLAG_NEED_RTNL,
13598 },
13599 {
13600 .cmd = NL80211_CMD_START_NAN,
13601 .doit = nl80211_start_nan,
13602 .policy = nl80211_policy,
13603 .flags = GENL_ADMIN_PERM,
13604 .internal_flags = NL80211_FLAG_NEED_WDEV |
13605 NL80211_FLAG_NEED_RTNL,
13606 },
13607 {
13608 .cmd = NL80211_CMD_STOP_NAN,
13609 .doit = nl80211_stop_nan,
13610 .policy = nl80211_policy,
13611 .flags = GENL_ADMIN_PERM,
13612 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13613 NL80211_FLAG_NEED_RTNL,
13614 },
13615 {
13616 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13617 .doit = nl80211_nan_add_func,
13618 .policy = nl80211_policy,
13619 .flags = GENL_ADMIN_PERM,
13620 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13621 NL80211_FLAG_NEED_RTNL,
13622 },
13623 {
13624 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13625 .doit = nl80211_nan_del_func,
13626 .policy = nl80211_policy,
13627 .flags = GENL_ADMIN_PERM,
13628 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13629 NL80211_FLAG_NEED_RTNL,
13630 },
13631 {
13632 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13633 .doit = nl80211_nan_change_config,
13634 .policy = nl80211_policy,
13635 .flags = GENL_ADMIN_PERM,
13636 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13637 NL80211_FLAG_NEED_RTNL,
13638 },
13639 {
13640 .cmd = NL80211_CMD_SET_MCAST_RATE,
13641 .doit = nl80211_set_mcast_rate,
13642 .policy = nl80211_policy,
13643 .flags = GENL_UNS_ADMIN_PERM,
13644 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13645 NL80211_FLAG_NEED_RTNL,
13646 },
13647 {
13648 .cmd = NL80211_CMD_SET_MAC_ACL,
13649 .doit = nl80211_set_mac_acl,
13650 .policy = nl80211_policy,
13651 .flags = GENL_UNS_ADMIN_PERM,
13652 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13653 NL80211_FLAG_NEED_RTNL,
13654 },
13655 {
13656 .cmd = NL80211_CMD_RADAR_DETECT,
13657 .doit = nl80211_start_radar_detection,
13658 .policy = nl80211_policy,
13659 .flags = GENL_UNS_ADMIN_PERM,
13660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13661 NL80211_FLAG_NEED_RTNL,
13662 },
13663 {
13664 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13665 .doit = nl80211_get_protocol_features,
13666 .policy = nl80211_policy,
13667 },
13668 {
13669 .cmd = NL80211_CMD_UPDATE_FT_IES,
13670 .doit = nl80211_update_ft_ies,
13671 .policy = nl80211_policy,
13672 .flags = GENL_UNS_ADMIN_PERM,
13673 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13674 NL80211_FLAG_NEED_RTNL,
13675 },
13676 {
13677 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13678 .doit = nl80211_crit_protocol_start,
13679 .policy = nl80211_policy,
13680 .flags = GENL_UNS_ADMIN_PERM,
13681 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13682 NL80211_FLAG_NEED_RTNL,
13683 },
13684 {
13685 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13686 .doit = nl80211_crit_protocol_stop,
13687 .policy = nl80211_policy,
13688 .flags = GENL_UNS_ADMIN_PERM,
13689 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13690 NL80211_FLAG_NEED_RTNL,
13691 },
13692 {
13693 .cmd = NL80211_CMD_GET_COALESCE,
13694 .doit = nl80211_get_coalesce,
13695 .policy = nl80211_policy,
13696 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13697 NL80211_FLAG_NEED_RTNL,
13698 },
13699 {
13700 .cmd = NL80211_CMD_SET_COALESCE,
13701 .doit = nl80211_set_coalesce,
13702 .policy = nl80211_policy,
13703 .flags = GENL_UNS_ADMIN_PERM,
13704 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13705 NL80211_FLAG_NEED_RTNL,
13706 },
13707 {
13708 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13709 .doit = nl80211_channel_switch,
13710 .policy = nl80211_policy,
13711 .flags = GENL_UNS_ADMIN_PERM,
13712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13713 NL80211_FLAG_NEED_RTNL,
13714 },
13715 {
13716 .cmd = NL80211_CMD_VENDOR,
13717 .doit = nl80211_vendor_cmd,
13718 .dumpit = nl80211_vendor_cmd_dump,
13719 .policy = nl80211_policy,
13720 .flags = GENL_UNS_ADMIN_PERM,
13721 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13722 NL80211_FLAG_NEED_RTNL,
13723 },
13724 {
13725 .cmd = NL80211_CMD_SET_QOS_MAP,
13726 .doit = nl80211_set_qos_map,
13727 .policy = nl80211_policy,
13728 .flags = GENL_UNS_ADMIN_PERM,
13729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13730 NL80211_FLAG_NEED_RTNL,
13731 },
13732 {
13733 .cmd = NL80211_CMD_ADD_TX_TS,
13734 .doit = nl80211_add_tx_ts,
13735 .policy = nl80211_policy,
13736 .flags = GENL_UNS_ADMIN_PERM,
13737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13738 NL80211_FLAG_NEED_RTNL,
13739 },
13740 {
13741 .cmd = NL80211_CMD_DEL_TX_TS,
13742 .doit = nl80211_del_tx_ts,
13743 .policy = nl80211_policy,
13744 .flags = GENL_UNS_ADMIN_PERM,
13745 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13746 NL80211_FLAG_NEED_RTNL,
13747 },
13748 {
13749 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13750 .doit = nl80211_tdls_channel_switch,
13751 .policy = nl80211_policy,
13752 .flags = GENL_UNS_ADMIN_PERM,
13753 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13754 NL80211_FLAG_NEED_RTNL,
13755 },
13756 {
13757 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13758 .doit = nl80211_tdls_cancel_channel_switch,
13759 .policy = nl80211_policy,
13760 .flags = GENL_UNS_ADMIN_PERM,
13761 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13762 NL80211_FLAG_NEED_RTNL,
13763 },
13764 {
13765 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13766 .doit = nl80211_set_multicast_to_unicast,
13767 .policy = nl80211_policy,
13768 .flags = GENL_UNS_ADMIN_PERM,
13769 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13770 NL80211_FLAG_NEED_RTNL,
13771 },
13772 {
13773 .cmd = NL80211_CMD_SET_PMK,
13774 .doit = nl80211_set_pmk,
13775 .policy = nl80211_policy,
13776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13777 NL80211_FLAG_NEED_RTNL,
13778 },
13779 {
13780 .cmd = NL80211_CMD_DEL_PMK,
13781 .doit = nl80211_del_pmk,
13782 .policy = nl80211_policy,
13783 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13784 NL80211_FLAG_NEED_RTNL,
13785 },
13786 {
13787 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13788 .doit = nl80211_external_auth,
13789 .policy = nl80211_policy,
13790 .flags = GENL_ADMIN_PERM,
13791 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13792 NL80211_FLAG_NEED_RTNL,
13793 },
13794 {
13795 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13796 .doit = nl80211_tx_control_port,
13797 .policy = nl80211_policy,
13798 .flags = GENL_UNS_ADMIN_PERM,
13799 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13800 NL80211_FLAG_NEED_RTNL,
13801 },
13802 };
13803
13804 static struct genl_family nl80211_fam __ro_after_init = {
13805 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13806 .hdrsize = 0, /* no private header */
13807 .version = 1, /* no particular meaning now */
13808 .maxattr = NL80211_ATTR_MAX,
13809 .netnsok = true,
13810 .pre_doit = nl80211_pre_doit,
13811 .post_doit = nl80211_post_doit,
13812 .module = THIS_MODULE,
13813 .ops = nl80211_ops,
13814 .n_ops = ARRAY_SIZE(nl80211_ops),
13815 .mcgrps = nl80211_mcgrps,
13816 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13817 };
13818
13819 /* notification functions */
13820
13821 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13822 enum nl80211_commands cmd)
13823 {
13824 struct sk_buff *msg;
13825 struct nl80211_dump_wiphy_state state = {};
13826
13827 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13828 cmd != NL80211_CMD_DEL_WIPHY);
13829
13830 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13831 if (!msg)
13832 return;
13833
13834 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13835 nlmsg_free(msg);
13836 return;
13837 }
13838
13839 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13840 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13841 }
13842
13843 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13844 struct wireless_dev *wdev,
13845 enum nl80211_commands cmd)
13846 {
13847 struct sk_buff *msg;
13848
13849 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13850 cmd != NL80211_CMD_DEL_INTERFACE);
13851
13852 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13853 if (!msg)
13854 return;
13855
13856 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13857 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13858 nlmsg_free(msg);
13859 return;
13860 }
13861
13862 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13863 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13864 }
13865
13866 static int nl80211_add_scan_req(struct sk_buff *msg,
13867 struct cfg80211_registered_device *rdev)
13868 {
13869 struct cfg80211_scan_request *req = rdev->scan_req;
13870 struct nlattr *nest;
13871 int i;
13872
13873 if (WARN_ON(!req))
13874 return 0;
13875
13876 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13877 if (!nest)
13878 goto nla_put_failure;
13879 for (i = 0; i < req->n_ssids; i++) {
13880 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13881 goto nla_put_failure;
13882 }
13883 nla_nest_end(msg, nest);
13884
13885 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13886 if (!nest)
13887 goto nla_put_failure;
13888 for (i = 0; i < req->n_channels; i++) {
13889 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13890 goto nla_put_failure;
13891 }
13892 nla_nest_end(msg, nest);
13893
13894 if (req->ie &&
13895 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13896 goto nla_put_failure;
13897
13898 if (req->flags &&
13899 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13900 goto nla_put_failure;
13901
13902 if (req->info.scan_start_tsf &&
13903 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13904 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13905 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13906 req->info.tsf_bssid)))
13907 goto nla_put_failure;
13908
13909 return 0;
13910 nla_put_failure:
13911 return -ENOBUFS;
13912 }
13913
13914 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13915 struct cfg80211_registered_device *rdev,
13916 struct wireless_dev *wdev,
13917 u32 portid, u32 seq, int flags,
13918 u32 cmd)
13919 {
13920 void *hdr;
13921
13922 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13923 if (!hdr)
13924 return -1;
13925
13926 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13927 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13928 wdev->netdev->ifindex)) ||
13929 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13930 NL80211_ATTR_PAD))
13931 goto nla_put_failure;
13932
13933 /* ignore errors and send incomplete event anyway */
13934 nl80211_add_scan_req(msg, rdev);
13935
13936 genlmsg_end(msg, hdr);
13937 return 0;
13938
13939 nla_put_failure:
13940 genlmsg_cancel(msg, hdr);
13941 return -EMSGSIZE;
13942 }
13943
13944 static int
13945 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13946 struct cfg80211_sched_scan_request *req, u32 cmd)
13947 {
13948 void *hdr;
13949
13950 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13951 if (!hdr)
13952 return -1;
13953
13954 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13955 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13956 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13957 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13958 NL80211_ATTR_PAD))
13959 goto nla_put_failure;
13960
13961 genlmsg_end(msg, hdr);
13962 return 0;
13963
13964 nla_put_failure:
13965 genlmsg_cancel(msg, hdr);
13966 return -EMSGSIZE;
13967 }
13968
13969 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13970 struct wireless_dev *wdev)
13971 {
13972 struct sk_buff *msg;
13973
13974 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13975 if (!msg)
13976 return;
13977
13978 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13979 NL80211_CMD_TRIGGER_SCAN) < 0) {
13980 nlmsg_free(msg);
13981 return;
13982 }
13983
13984 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13985 NL80211_MCGRP_SCAN, GFP_KERNEL);
13986 }
13987
13988 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13989 struct wireless_dev *wdev, bool aborted)
13990 {
13991 struct sk_buff *msg;
13992
13993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13994 if (!msg)
13995 return NULL;
13996
13997 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13998 aborted ? NL80211_CMD_SCAN_ABORTED :
13999 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14000 nlmsg_free(msg);
14001 return NULL;
14002 }
14003
14004 return msg;
14005 }
14006
14007 /* send message created by nl80211_build_scan_msg() */
14008 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14009 struct sk_buff *msg)
14010 {
14011 if (!msg)
14012 return;
14013
14014 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14015 NL80211_MCGRP_SCAN, GFP_KERNEL);
14016 }
14017
14018 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14019 {
14020 struct sk_buff *msg;
14021
14022 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14023 if (!msg)
14024 return;
14025
14026 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14027 nlmsg_free(msg);
14028 return;
14029 }
14030
14031 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14032 NL80211_MCGRP_SCAN, GFP_KERNEL);
14033 }
14034
14035 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14036 struct regulatory_request *request)
14037 {
14038 /* Userspace can always count this one always being set */
14039 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14040 goto nla_put_failure;
14041
14042 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14043 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14044 NL80211_REGDOM_TYPE_WORLD))
14045 goto nla_put_failure;
14046 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14047 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14048 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14049 goto nla_put_failure;
14050 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14051 request->intersect) {
14052 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14053 NL80211_REGDOM_TYPE_INTERSECTION))
14054 goto nla_put_failure;
14055 } else {
14056 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14057 NL80211_REGDOM_TYPE_COUNTRY) ||
14058 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14059 request->alpha2))
14060 goto nla_put_failure;
14061 }
14062
14063 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14064 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14065
14066 if (wiphy &&
14067 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14068 goto nla_put_failure;
14069
14070 if (wiphy &&
14071 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14072 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14073 goto nla_put_failure;
14074 }
14075
14076 return true;
14077
14078 nla_put_failure:
14079 return false;
14080 }
14081
14082 /*
14083 * This can happen on global regulatory changes or device specific settings
14084 * based on custom regulatory domains.
14085 */
14086 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14087 struct regulatory_request *request)
14088 {
14089 struct sk_buff *msg;
14090 void *hdr;
14091
14092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14093 if (!msg)
14094 return;
14095
14096 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14097 if (!hdr) {
14098 nlmsg_free(msg);
14099 return;
14100 }
14101
14102 if (nl80211_reg_change_event_fill(msg, request) == false)
14103 goto nla_put_failure;
14104
14105 genlmsg_end(msg, hdr);
14106
14107 rcu_read_lock();
14108 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14109 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14110 rcu_read_unlock();
14111
14112 return;
14113
14114 nla_put_failure:
14115 nlmsg_free(msg);
14116 }
14117
14118 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14119 struct net_device *netdev,
14120 const u8 *buf, size_t len,
14121 enum nl80211_commands cmd, gfp_t gfp,
14122 int uapsd_queues)
14123 {
14124 struct sk_buff *msg;
14125 void *hdr;
14126
14127 msg = nlmsg_new(100 + len, gfp);
14128 if (!msg)
14129 return;
14130
14131 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14132 if (!hdr) {
14133 nlmsg_free(msg);
14134 return;
14135 }
14136
14137 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14138 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14139 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14140 goto nla_put_failure;
14141
14142 if (uapsd_queues >= 0) {
14143 struct nlattr *nla_wmm =
14144 nla_nest_start(msg, NL80211_ATTR_STA_WME);
14145 if (!nla_wmm)
14146 goto nla_put_failure;
14147
14148 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14149 uapsd_queues))
14150 goto nla_put_failure;
14151
14152 nla_nest_end(msg, nla_wmm);
14153 }
14154
14155 genlmsg_end(msg, hdr);
14156
14157 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14158 NL80211_MCGRP_MLME, gfp);
14159 return;
14160
14161 nla_put_failure:
14162 nlmsg_free(msg);
14163 }
14164
14165 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14166 struct net_device *netdev, const u8 *buf,
14167 size_t len, gfp_t gfp)
14168 {
14169 nl80211_send_mlme_event(rdev, netdev, buf, len,
14170 NL80211_CMD_AUTHENTICATE, gfp, -1);
14171 }
14172
14173 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14174 struct net_device *netdev, const u8 *buf,
14175 size_t len, gfp_t gfp, int uapsd_queues)
14176 {
14177 nl80211_send_mlme_event(rdev, netdev, buf, len,
14178 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14179 }
14180
14181 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14182 struct net_device *netdev, const u8 *buf,
14183 size_t len, gfp_t gfp)
14184 {
14185 nl80211_send_mlme_event(rdev, netdev, buf, len,
14186 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14187 }
14188
14189 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14190 struct net_device *netdev, const u8 *buf,
14191 size_t len, gfp_t gfp)
14192 {
14193 nl80211_send_mlme_event(rdev, netdev, buf, len,
14194 NL80211_CMD_DISASSOCIATE, gfp, -1);
14195 }
14196
14197 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14198 size_t len)
14199 {
14200 struct wireless_dev *wdev = dev->ieee80211_ptr;
14201 struct wiphy *wiphy = wdev->wiphy;
14202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14203 const struct ieee80211_mgmt *mgmt = (void *)buf;
14204 u32 cmd;
14205
14206 if (WARN_ON(len < 2))
14207 return;
14208
14209 if (ieee80211_is_deauth(mgmt->frame_control))
14210 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14211 else
14212 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14213
14214 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14215 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14216 }
14217 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14218
14219 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14220 struct net_device *netdev, int cmd,
14221 const u8 *addr, gfp_t gfp)
14222 {
14223 struct sk_buff *msg;
14224 void *hdr;
14225
14226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14227 if (!msg)
14228 return;
14229
14230 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14231 if (!hdr) {
14232 nlmsg_free(msg);
14233 return;
14234 }
14235
14236 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14237 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14238 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14239 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14240 goto nla_put_failure;
14241
14242 genlmsg_end(msg, hdr);
14243
14244 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14245 NL80211_MCGRP_MLME, gfp);
14246 return;
14247
14248 nla_put_failure:
14249 nlmsg_free(msg);
14250 }
14251
14252 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14253 struct net_device *netdev, const u8 *addr,
14254 gfp_t gfp)
14255 {
14256 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14257 addr, gfp);
14258 }
14259
14260 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14261 struct net_device *netdev, const u8 *addr,
14262 gfp_t gfp)
14263 {
14264 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14265 addr, gfp);
14266 }
14267
14268 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14269 struct net_device *netdev,
14270 struct cfg80211_connect_resp_params *cr,
14271 gfp_t gfp)
14272 {
14273 struct sk_buff *msg;
14274 void *hdr;
14275
14276 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14277 cr->fils.kek_len + cr->fils.pmk_len +
14278 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14279 if (!msg)
14280 return;
14281
14282 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14283 if (!hdr) {
14284 nlmsg_free(msg);
14285 return;
14286 }
14287
14288 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14289 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14290 (cr->bssid &&
14291 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14292 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14293 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14294 cr->status) ||
14295 (cr->status < 0 &&
14296 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14297 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14298 cr->timeout_reason))) ||
14299 (cr->req_ie &&
14300 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14301 (cr->resp_ie &&
14302 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14303 cr->resp_ie)) ||
14304 (cr->fils.update_erp_next_seq_num &&
14305 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14306 cr->fils.erp_next_seq_num)) ||
14307 (cr->status == WLAN_STATUS_SUCCESS &&
14308 ((cr->fils.kek &&
14309 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14310 cr->fils.kek)) ||
14311 (cr->fils.pmk &&
14312 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14313 (cr->fils.pmkid &&
14314 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14315 goto nla_put_failure;
14316
14317 genlmsg_end(msg, hdr);
14318
14319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14320 NL80211_MCGRP_MLME, gfp);
14321 return;
14322
14323 nla_put_failure:
14324 nlmsg_free(msg);
14325 }
14326
14327 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14328 struct net_device *netdev,
14329 struct cfg80211_roam_info *info, gfp_t gfp)
14330 {
14331 struct sk_buff *msg;
14332 void *hdr;
14333 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14334
14335 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14336 info->fils.kek_len + info->fils.pmk_len +
14337 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14338 if (!msg)
14339 return;
14340
14341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14342 if (!hdr) {
14343 nlmsg_free(msg);
14344 return;
14345 }
14346
14347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14348 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14349 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14350 (info->req_ie &&
14351 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14352 info->req_ie)) ||
14353 (info->resp_ie &&
14354 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14355 info->resp_ie)) ||
14356 (info->fils.update_erp_next_seq_num &&
14357 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14358 info->fils.erp_next_seq_num)) ||
14359 (info->fils.kek &&
14360 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14361 info->fils.kek)) ||
14362 (info->fils.pmk &&
14363 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14364 (info->fils.pmkid &&
14365 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14366 goto nla_put_failure;
14367
14368 genlmsg_end(msg, hdr);
14369
14370 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14371 NL80211_MCGRP_MLME, gfp);
14372 return;
14373
14374 nla_put_failure:
14375 nlmsg_free(msg);
14376 }
14377
14378 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14379 struct net_device *netdev, const u8 *bssid)
14380 {
14381 struct sk_buff *msg;
14382 void *hdr;
14383
14384 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14385 if (!msg)
14386 return;
14387
14388 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14389 if (!hdr) {
14390 nlmsg_free(msg);
14391 return;
14392 }
14393
14394 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14395 goto nla_put_failure;
14396
14397 genlmsg_end(msg, hdr);
14398
14399 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14400 NL80211_MCGRP_MLME, GFP_KERNEL);
14401 return;
14402
14403 nla_put_failure:
14404 nlmsg_free(msg);
14405 }
14406
14407 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14408 struct net_device *netdev, u16 reason,
14409 const u8 *ie, size_t ie_len, bool from_ap)
14410 {
14411 struct sk_buff *msg;
14412 void *hdr;
14413
14414 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14415 if (!msg)
14416 return;
14417
14418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14419 if (!hdr) {
14420 nlmsg_free(msg);
14421 return;
14422 }
14423
14424 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14425 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14426 (reason &&
14427 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14428 (from_ap &&
14429 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14430 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14431 goto nla_put_failure;
14432
14433 genlmsg_end(msg, hdr);
14434
14435 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14436 NL80211_MCGRP_MLME, GFP_KERNEL);
14437 return;
14438
14439 nla_put_failure:
14440 nlmsg_free(msg);
14441 }
14442
14443 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14444 struct net_device *netdev, const u8 *bssid,
14445 gfp_t gfp)
14446 {
14447 struct sk_buff *msg;
14448 void *hdr;
14449
14450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14451 if (!msg)
14452 return;
14453
14454 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14455 if (!hdr) {
14456 nlmsg_free(msg);
14457 return;
14458 }
14459
14460 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14461 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14462 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14463 goto nla_put_failure;
14464
14465 genlmsg_end(msg, hdr);
14466
14467 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14468 NL80211_MCGRP_MLME, gfp);
14469 return;
14470
14471 nla_put_failure:
14472 nlmsg_free(msg);
14473 }
14474
14475 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14476 const u8* ie, u8 ie_len, gfp_t gfp)
14477 {
14478 struct wireless_dev *wdev = dev->ieee80211_ptr;
14479 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14480 struct sk_buff *msg;
14481 void *hdr;
14482
14483 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14484 return;
14485
14486 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14487
14488 msg = nlmsg_new(100 + ie_len, gfp);
14489 if (!msg)
14490 return;
14491
14492 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14493 if (!hdr) {
14494 nlmsg_free(msg);
14495 return;
14496 }
14497
14498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14499 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14500 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14501 (ie_len && ie &&
14502 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14503 goto nla_put_failure;
14504
14505 genlmsg_end(msg, hdr);
14506
14507 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14508 NL80211_MCGRP_MLME, gfp);
14509 return;
14510
14511 nla_put_failure:
14512 nlmsg_free(msg);
14513 }
14514 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14515
14516 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14517 struct net_device *netdev, const u8 *addr,
14518 enum nl80211_key_type key_type, int key_id,
14519 const u8 *tsc, gfp_t gfp)
14520 {
14521 struct sk_buff *msg;
14522 void *hdr;
14523
14524 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14525 if (!msg)
14526 return;
14527
14528 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14529 if (!hdr) {
14530 nlmsg_free(msg);
14531 return;
14532 }
14533
14534 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14535 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14536 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14537 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14538 (key_id != -1 &&
14539 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14540 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14541 goto nla_put_failure;
14542
14543 genlmsg_end(msg, hdr);
14544
14545 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14546 NL80211_MCGRP_MLME, gfp);
14547 return;
14548
14549 nla_put_failure:
14550 nlmsg_free(msg);
14551 }
14552
14553 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14554 struct ieee80211_channel *channel_before,
14555 struct ieee80211_channel *channel_after)
14556 {
14557 struct sk_buff *msg;
14558 void *hdr;
14559 struct nlattr *nl_freq;
14560
14561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14562 if (!msg)
14563 return;
14564
14565 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14566 if (!hdr) {
14567 nlmsg_free(msg);
14568 return;
14569 }
14570
14571 /*
14572 * Since we are applying the beacon hint to a wiphy we know its
14573 * wiphy_idx is valid
14574 */
14575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14576 goto nla_put_failure;
14577
14578 /* Before */
14579 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14580 if (!nl_freq)
14581 goto nla_put_failure;
14582
14583 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14584 goto nla_put_failure;
14585 nla_nest_end(msg, nl_freq);
14586
14587 /* After */
14588 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14589 if (!nl_freq)
14590 goto nla_put_failure;
14591
14592 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14593 goto nla_put_failure;
14594 nla_nest_end(msg, nl_freq);
14595
14596 genlmsg_end(msg, hdr);
14597
14598 rcu_read_lock();
14599 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14600 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14601 rcu_read_unlock();
14602
14603 return;
14604
14605 nla_put_failure:
14606 nlmsg_free(msg);
14607 }
14608
14609 static void nl80211_send_remain_on_chan_event(
14610 int cmd, struct cfg80211_registered_device *rdev,
14611 struct wireless_dev *wdev, u64 cookie,
14612 struct ieee80211_channel *chan,
14613 unsigned int duration, gfp_t gfp)
14614 {
14615 struct sk_buff *msg;
14616 void *hdr;
14617
14618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14619 if (!msg)
14620 return;
14621
14622 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14623 if (!hdr) {
14624 nlmsg_free(msg);
14625 return;
14626 }
14627
14628 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14629 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14630 wdev->netdev->ifindex)) ||
14631 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14632 NL80211_ATTR_PAD) ||
14633 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14634 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14635 NL80211_CHAN_NO_HT) ||
14636 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14637 NL80211_ATTR_PAD))
14638 goto nla_put_failure;
14639
14640 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14641 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14642 goto nla_put_failure;
14643
14644 genlmsg_end(msg, hdr);
14645
14646 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14647 NL80211_MCGRP_MLME, gfp);
14648 return;
14649
14650 nla_put_failure:
14651 nlmsg_free(msg);
14652 }
14653
14654 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14655 struct ieee80211_channel *chan,
14656 unsigned int duration, gfp_t gfp)
14657 {
14658 struct wiphy *wiphy = wdev->wiphy;
14659 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14660
14661 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14662 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14663 rdev, wdev, cookie, chan,
14664 duration, gfp);
14665 }
14666 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14667
14668 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14669 struct ieee80211_channel *chan,
14670 gfp_t gfp)
14671 {
14672 struct wiphy *wiphy = wdev->wiphy;
14673 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14674
14675 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14676 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14677 rdev, wdev, cookie, chan, 0, gfp);
14678 }
14679 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14680
14681 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14682 struct station_info *sinfo, gfp_t gfp)
14683 {
14684 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14685 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14686 struct sk_buff *msg;
14687
14688 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14689
14690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14691 if (!msg)
14692 return;
14693
14694 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14695 rdev, dev, mac_addr, sinfo) < 0) {
14696 nlmsg_free(msg);
14697 return;
14698 }
14699
14700 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14701 NL80211_MCGRP_MLME, gfp);
14702 }
14703 EXPORT_SYMBOL(cfg80211_new_sta);
14704
14705 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14706 struct station_info *sinfo, gfp_t gfp)
14707 {
14708 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14709 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14710 struct sk_buff *msg;
14711 struct station_info empty_sinfo = {};
14712
14713 if (!sinfo)
14714 sinfo = &empty_sinfo;
14715
14716 trace_cfg80211_del_sta(dev, mac_addr);
14717
14718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14719 if (!msg) {
14720 cfg80211_sinfo_release_content(sinfo);
14721 return;
14722 }
14723
14724 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14725 rdev, dev, mac_addr, sinfo) < 0) {
14726 nlmsg_free(msg);
14727 return;
14728 }
14729
14730 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14731 NL80211_MCGRP_MLME, gfp);
14732 }
14733 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14734
14735 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14736 enum nl80211_connect_failed_reason reason,
14737 gfp_t gfp)
14738 {
14739 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14740 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14741 struct sk_buff *msg;
14742 void *hdr;
14743
14744 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14745 if (!msg)
14746 return;
14747
14748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14749 if (!hdr) {
14750 nlmsg_free(msg);
14751 return;
14752 }
14753
14754 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14755 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14756 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14757 goto nla_put_failure;
14758
14759 genlmsg_end(msg, hdr);
14760
14761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14762 NL80211_MCGRP_MLME, gfp);
14763 return;
14764
14765 nla_put_failure:
14766 nlmsg_free(msg);
14767 }
14768 EXPORT_SYMBOL(cfg80211_conn_failed);
14769
14770 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14771 const u8 *addr, gfp_t gfp)
14772 {
14773 struct wireless_dev *wdev = dev->ieee80211_ptr;
14774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14775 struct sk_buff *msg;
14776 void *hdr;
14777 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14778
14779 if (!nlportid)
14780 return false;
14781
14782 msg = nlmsg_new(100, gfp);
14783 if (!msg)
14784 return true;
14785
14786 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14787 if (!hdr) {
14788 nlmsg_free(msg);
14789 return true;
14790 }
14791
14792 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14793 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14794 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14795 goto nla_put_failure;
14796
14797 genlmsg_end(msg, hdr);
14798 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14799 return true;
14800
14801 nla_put_failure:
14802 nlmsg_free(msg);
14803 return true;
14804 }
14805
14806 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14807 const u8 *addr, gfp_t gfp)
14808 {
14809 struct wireless_dev *wdev = dev->ieee80211_ptr;
14810 bool ret;
14811
14812 trace_cfg80211_rx_spurious_frame(dev, addr);
14813
14814 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14815 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14816 trace_cfg80211_return_bool(false);
14817 return false;
14818 }
14819 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14820 addr, gfp);
14821 trace_cfg80211_return_bool(ret);
14822 return ret;
14823 }
14824 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14825
14826 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14827 const u8 *addr, gfp_t gfp)
14828 {
14829 struct wireless_dev *wdev = dev->ieee80211_ptr;
14830 bool ret;
14831
14832 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14833
14834 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14835 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14836 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14837 trace_cfg80211_return_bool(false);
14838 return false;
14839 }
14840 ret = __nl80211_unexpected_frame(dev,
14841 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14842 addr, gfp);
14843 trace_cfg80211_return_bool(ret);
14844 return ret;
14845 }
14846 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14847
14848 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14849 struct wireless_dev *wdev, u32 nlportid,
14850 int freq, int sig_dbm,
14851 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14852 {
14853 struct net_device *netdev = wdev->netdev;
14854 struct sk_buff *msg;
14855 void *hdr;
14856
14857 msg = nlmsg_new(100 + len, gfp);
14858 if (!msg)
14859 return -ENOMEM;
14860
14861 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14862 if (!hdr) {
14863 nlmsg_free(msg);
14864 return -ENOMEM;
14865 }
14866
14867 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14868 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14869 netdev->ifindex)) ||
14870 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14871 NL80211_ATTR_PAD) ||
14872 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14873 (sig_dbm &&
14874 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14875 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14876 (flags &&
14877 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14878 goto nla_put_failure;
14879
14880 genlmsg_end(msg, hdr);
14881
14882 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14883
14884 nla_put_failure:
14885 nlmsg_free(msg);
14886 return -ENOBUFS;
14887 }
14888
14889 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14890 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14891 {
14892 struct wiphy *wiphy = wdev->wiphy;
14893 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14894 struct net_device *netdev = wdev->netdev;
14895 struct sk_buff *msg;
14896 void *hdr;
14897
14898 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14899
14900 msg = nlmsg_new(100 + len, gfp);
14901 if (!msg)
14902 return;
14903
14904 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14905 if (!hdr) {
14906 nlmsg_free(msg);
14907 return;
14908 }
14909
14910 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14911 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14912 netdev->ifindex)) ||
14913 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14914 NL80211_ATTR_PAD) ||
14915 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14916 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14917 NL80211_ATTR_PAD) ||
14918 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14919 goto nla_put_failure;
14920
14921 genlmsg_end(msg, hdr);
14922
14923 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14924 NL80211_MCGRP_MLME, gfp);
14925 return;
14926
14927 nla_put_failure:
14928 nlmsg_free(msg);
14929 }
14930 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14931
14932 static int __nl80211_rx_control_port(struct net_device *dev,
14933 const u8 *buf, size_t len,
14934 const u8 *addr, u16 proto,
14935 bool unencrypted, gfp_t gfp)
14936 {
14937 struct wireless_dev *wdev = dev->ieee80211_ptr;
14938 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14939 struct sk_buff *msg;
14940 void *hdr;
14941 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
14942
14943 if (!nlportid)
14944 return -ENOENT;
14945
14946 msg = nlmsg_new(100 + len, gfp);
14947 if (!msg)
14948 return -ENOMEM;
14949
14950 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
14951 if (!hdr) {
14952 nlmsg_free(msg);
14953 return -ENOBUFS;
14954 }
14955
14956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14957 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14958 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14959 NL80211_ATTR_PAD) ||
14960 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14961 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14962 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
14963 (unencrypted && nla_put_flag(msg,
14964 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
14965 goto nla_put_failure;
14966
14967 genlmsg_end(msg, hdr);
14968
14969 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14970
14971 nla_put_failure:
14972 nlmsg_free(msg);
14973 return -ENOBUFS;
14974 }
14975
14976 bool cfg80211_rx_control_port(struct net_device *dev,
14977 const u8 *buf, size_t len,
14978 const u8 *addr, u16 proto, bool unencrypted)
14979 {
14980 int ret;
14981
14982 trace_cfg80211_rx_control_port(dev, buf, len, addr, proto, unencrypted);
14983 ret = __nl80211_rx_control_port(dev, buf, len, addr, proto,
14984 unencrypted, GFP_ATOMIC);
14985 trace_cfg80211_return_bool(ret == 0);
14986 return ret == 0;
14987 }
14988 EXPORT_SYMBOL(cfg80211_rx_control_port);
14989
14990 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14991 const char *mac, gfp_t gfp)
14992 {
14993 struct wireless_dev *wdev = dev->ieee80211_ptr;
14994 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14995 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14996 void **cb;
14997
14998 if (!msg)
14999 return NULL;
15000
15001 cb = (void **)msg->cb;
15002
15003 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15004 if (!cb[0]) {
15005 nlmsg_free(msg);
15006 return NULL;
15007 }
15008
15009 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15010 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15011 goto nla_put_failure;
15012
15013 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15014 goto nla_put_failure;
15015
15016 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15017 if (!cb[1])
15018 goto nla_put_failure;
15019
15020 cb[2] = rdev;
15021
15022 return msg;
15023 nla_put_failure:
15024 nlmsg_free(msg);
15025 return NULL;
15026 }
15027
15028 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15029 {
15030 void **cb = (void **)msg->cb;
15031 struct cfg80211_registered_device *rdev = cb[2];
15032
15033 nla_nest_end(msg, cb[1]);
15034 genlmsg_end(msg, cb[0]);
15035
15036 memset(msg->cb, 0, sizeof(msg->cb));
15037
15038 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15039 NL80211_MCGRP_MLME, gfp);
15040 }
15041
15042 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15043 enum nl80211_cqm_rssi_threshold_event rssi_event,
15044 s32 rssi_level, gfp_t gfp)
15045 {
15046 struct sk_buff *msg;
15047 struct wireless_dev *wdev = dev->ieee80211_ptr;
15048 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15049
15050 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15051
15052 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15053 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15054 return;
15055
15056 if (wdev->cqm_config) {
15057 wdev->cqm_config->last_rssi_event_value = rssi_level;
15058
15059 cfg80211_cqm_rssi_update(rdev, dev);
15060
15061 if (rssi_level == 0)
15062 rssi_level = wdev->cqm_config->last_rssi_event_value;
15063 }
15064
15065 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15066 if (!msg)
15067 return;
15068
15069 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15070 rssi_event))
15071 goto nla_put_failure;
15072
15073 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15074 rssi_level))
15075 goto nla_put_failure;
15076
15077 cfg80211_send_cqm(msg, gfp);
15078
15079 return;
15080
15081 nla_put_failure:
15082 nlmsg_free(msg);
15083 }
15084 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15085
15086 void cfg80211_cqm_txe_notify(struct net_device *dev,
15087 const u8 *peer, u32 num_packets,
15088 u32 rate, u32 intvl, gfp_t gfp)
15089 {
15090 struct sk_buff *msg;
15091
15092 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15093 if (!msg)
15094 return;
15095
15096 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15097 goto nla_put_failure;
15098
15099 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15100 goto nla_put_failure;
15101
15102 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15103 goto nla_put_failure;
15104
15105 cfg80211_send_cqm(msg, gfp);
15106 return;
15107
15108 nla_put_failure:
15109 nlmsg_free(msg);
15110 }
15111 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15112
15113 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15114 const u8 *peer, u32 num_packets, gfp_t gfp)
15115 {
15116 struct sk_buff *msg;
15117
15118 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15119
15120 msg = cfg80211_prepare_cqm(dev, peer, gfp);
15121 if (!msg)
15122 return;
15123
15124 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15125 goto nla_put_failure;
15126
15127 cfg80211_send_cqm(msg, gfp);
15128 return;
15129
15130 nla_put_failure:
15131 nlmsg_free(msg);
15132 }
15133 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15134
15135 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15136 {
15137 struct sk_buff *msg;
15138
15139 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15140 if (!msg)
15141 return;
15142
15143 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15144 goto nla_put_failure;
15145
15146 cfg80211_send_cqm(msg, gfp);
15147 return;
15148
15149 nla_put_failure:
15150 nlmsg_free(msg);
15151 }
15152 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15153
15154 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15155 struct net_device *netdev, const u8 *bssid,
15156 const u8 *replay_ctr, gfp_t gfp)
15157 {
15158 struct sk_buff *msg;
15159 struct nlattr *rekey_attr;
15160 void *hdr;
15161
15162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15163 if (!msg)
15164 return;
15165
15166 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15167 if (!hdr) {
15168 nlmsg_free(msg);
15169 return;
15170 }
15171
15172 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15173 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15174 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15175 goto nla_put_failure;
15176
15177 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15178 if (!rekey_attr)
15179 goto nla_put_failure;
15180
15181 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15182 NL80211_REPLAY_CTR_LEN, replay_ctr))
15183 goto nla_put_failure;
15184
15185 nla_nest_end(msg, rekey_attr);
15186
15187 genlmsg_end(msg, hdr);
15188
15189 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15190 NL80211_MCGRP_MLME, gfp);
15191 return;
15192
15193 nla_put_failure:
15194 nlmsg_free(msg);
15195 }
15196
15197 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15198 const u8 *replay_ctr, gfp_t gfp)
15199 {
15200 struct wireless_dev *wdev = dev->ieee80211_ptr;
15201 struct wiphy *wiphy = wdev->wiphy;
15202 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15203
15204 trace_cfg80211_gtk_rekey_notify(dev, bssid);
15205 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15206 }
15207 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15208
15209 static void
15210 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15211 struct net_device *netdev, int index,
15212 const u8 *bssid, bool preauth, gfp_t gfp)
15213 {
15214 struct sk_buff *msg;
15215 struct nlattr *attr;
15216 void *hdr;
15217
15218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15219 if (!msg)
15220 return;
15221
15222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15223 if (!hdr) {
15224 nlmsg_free(msg);
15225 return;
15226 }
15227
15228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15229 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15230 goto nla_put_failure;
15231
15232 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15233 if (!attr)
15234 goto nla_put_failure;
15235
15236 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15237 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15238 (preauth &&
15239 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15240 goto nla_put_failure;
15241
15242 nla_nest_end(msg, attr);
15243
15244 genlmsg_end(msg, hdr);
15245
15246 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15247 NL80211_MCGRP_MLME, gfp);
15248 return;
15249
15250 nla_put_failure:
15251 nlmsg_free(msg);
15252 }
15253
15254 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15255 const u8 *bssid, bool preauth, gfp_t gfp)
15256 {
15257 struct wireless_dev *wdev = dev->ieee80211_ptr;
15258 struct wiphy *wiphy = wdev->wiphy;
15259 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15260
15261 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15262 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15263 }
15264 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15265
15266 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15267 struct net_device *netdev,
15268 struct cfg80211_chan_def *chandef,
15269 gfp_t gfp,
15270 enum nl80211_commands notif,
15271 u8 count)
15272 {
15273 struct sk_buff *msg;
15274 void *hdr;
15275
15276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15277 if (!msg)
15278 return;
15279
15280 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15281 if (!hdr) {
15282 nlmsg_free(msg);
15283 return;
15284 }
15285
15286 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15287 goto nla_put_failure;
15288
15289 if (nl80211_send_chandef(msg, chandef))
15290 goto nla_put_failure;
15291
15292 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15293 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15294 goto nla_put_failure;
15295
15296 genlmsg_end(msg, hdr);
15297
15298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15299 NL80211_MCGRP_MLME, gfp);
15300 return;
15301
15302 nla_put_failure:
15303 nlmsg_free(msg);
15304 }
15305
15306 void cfg80211_ch_switch_notify(struct net_device *dev,
15307 struct cfg80211_chan_def *chandef)
15308 {
15309 struct wireless_dev *wdev = dev->ieee80211_ptr;
15310 struct wiphy *wiphy = wdev->wiphy;
15311 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15312
15313 ASSERT_WDEV_LOCK(wdev);
15314
15315 trace_cfg80211_ch_switch_notify(dev, chandef);
15316
15317 wdev->chandef = *chandef;
15318 wdev->preset_chandef = *chandef;
15319 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15320 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15321 }
15322 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15323
15324 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15325 struct cfg80211_chan_def *chandef,
15326 u8 count)
15327 {
15328 struct wireless_dev *wdev = dev->ieee80211_ptr;
15329 struct wiphy *wiphy = wdev->wiphy;
15330 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15331
15332 trace_cfg80211_ch_switch_started_notify(dev, chandef);
15333
15334 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15335 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15336 }
15337 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15338
15339 void
15340 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15341 const struct cfg80211_chan_def *chandef,
15342 enum nl80211_radar_event event,
15343 struct net_device *netdev, gfp_t gfp)
15344 {
15345 struct sk_buff *msg;
15346 void *hdr;
15347
15348 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15349 if (!msg)
15350 return;
15351
15352 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15353 if (!hdr) {
15354 nlmsg_free(msg);
15355 return;
15356 }
15357
15358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15359 goto nla_put_failure;
15360
15361 /* NOP and radar events don't need a netdev parameter */
15362 if (netdev) {
15363 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15364
15365 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15366 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15367 NL80211_ATTR_PAD))
15368 goto nla_put_failure;
15369 }
15370
15371 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15372 goto nla_put_failure;
15373
15374 if (nl80211_send_chandef(msg, chandef))
15375 goto nla_put_failure;
15376
15377 genlmsg_end(msg, hdr);
15378
15379 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15380 NL80211_MCGRP_MLME, gfp);
15381 return;
15382
15383 nla_put_failure:
15384 nlmsg_free(msg);
15385 }
15386
15387 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15388 struct sta_opmode_info *sta_opmode,
15389 gfp_t gfp)
15390 {
15391 struct sk_buff *msg;
15392 struct wireless_dev *wdev = dev->ieee80211_ptr;
15393 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15394 void *hdr;
15395
15396 if (WARN_ON(!mac))
15397 return;
15398
15399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400 if (!msg)
15401 return;
15402
15403 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15404 if (!hdr) {
15405 nlmsg_free(msg);
15406 return;
15407 }
15408
15409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15410 goto nla_put_failure;
15411
15412 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15413 goto nla_put_failure;
15414
15415 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15416 goto nla_put_failure;
15417
15418 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15419 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15420 goto nla_put_failure;
15421
15422 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15423 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15424 goto nla_put_failure;
15425
15426 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15427 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15428 goto nla_put_failure;
15429
15430 genlmsg_end(msg, hdr);
15431
15432 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15433 NL80211_MCGRP_MLME, gfp);
15434
15435 return;
15436
15437 nla_put_failure:
15438 nlmsg_free(msg);
15439 }
15440 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15441
15442 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15443 u64 cookie, bool acked, s32 ack_signal,
15444 bool is_valid_ack_signal, gfp_t gfp)
15445 {
15446 struct wireless_dev *wdev = dev->ieee80211_ptr;
15447 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15448 struct sk_buff *msg;
15449 void *hdr;
15450
15451 trace_cfg80211_probe_status(dev, addr, cookie, acked);
15452
15453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15454
15455 if (!msg)
15456 return;
15457
15458 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15459 if (!hdr) {
15460 nlmsg_free(msg);
15461 return;
15462 }
15463
15464 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15465 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15466 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15467 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15468 NL80211_ATTR_PAD) ||
15469 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15470 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15471 ack_signal)))
15472 goto nla_put_failure;
15473
15474 genlmsg_end(msg, hdr);
15475
15476 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15477 NL80211_MCGRP_MLME, gfp);
15478 return;
15479
15480 nla_put_failure:
15481 nlmsg_free(msg);
15482 }
15483 EXPORT_SYMBOL(cfg80211_probe_status);
15484
15485 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15486 const u8 *frame, size_t len,
15487 int freq, int sig_dbm)
15488 {
15489 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15490 struct sk_buff *msg;
15491 void *hdr;
15492 struct cfg80211_beacon_registration *reg;
15493
15494 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15495
15496 spin_lock_bh(&rdev->beacon_registrations_lock);
15497 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15498 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15499 if (!msg) {
15500 spin_unlock_bh(&rdev->beacon_registrations_lock);
15501 return;
15502 }
15503
15504 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15505 if (!hdr)
15506 goto nla_put_failure;
15507
15508 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15509 (freq &&
15510 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15511 (sig_dbm &&
15512 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15513 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15514 goto nla_put_failure;
15515
15516 genlmsg_end(msg, hdr);
15517
15518 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15519 }
15520 spin_unlock_bh(&rdev->beacon_registrations_lock);
15521 return;
15522
15523 nla_put_failure:
15524 spin_unlock_bh(&rdev->beacon_registrations_lock);
15525 nlmsg_free(msg);
15526 }
15527 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15528
15529 #ifdef CONFIG_PM
15530 static int cfg80211_net_detect_results(struct sk_buff *msg,
15531 struct cfg80211_wowlan_wakeup *wakeup)
15532 {
15533 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15534 struct nlattr *nl_results, *nl_match, *nl_freqs;
15535 int i, j;
15536
15537 nl_results = nla_nest_start(
15538 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15539 if (!nl_results)
15540 return -EMSGSIZE;
15541
15542 for (i = 0; i < nd->n_matches; i++) {
15543 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15544
15545 nl_match = nla_nest_start(msg, i);
15546 if (!nl_match)
15547 break;
15548
15549 /* The SSID attribute is optional in nl80211, but for
15550 * simplicity reasons it's always present in the
15551 * cfg80211 structure. If a driver can't pass the
15552 * SSID, that needs to be changed. A zero length SSID
15553 * is still a valid SSID (wildcard), so it cannot be
15554 * used for this purpose.
15555 */
15556 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15557 match->ssid.ssid)) {
15558 nla_nest_cancel(msg, nl_match);
15559 goto out;
15560 }
15561
15562 if (match->n_channels) {
15563 nl_freqs = nla_nest_start(
15564 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15565 if (!nl_freqs) {
15566 nla_nest_cancel(msg, nl_match);
15567 goto out;
15568 }
15569
15570 for (j = 0; j < match->n_channels; j++) {
15571 if (nla_put_u32(msg, j, match->channels[j])) {
15572 nla_nest_cancel(msg, nl_freqs);
15573 nla_nest_cancel(msg, nl_match);
15574 goto out;
15575 }
15576 }
15577
15578 nla_nest_end(msg, nl_freqs);
15579 }
15580
15581 nla_nest_end(msg, nl_match);
15582 }
15583
15584 out:
15585 nla_nest_end(msg, nl_results);
15586 return 0;
15587 }
15588
15589 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15590 struct cfg80211_wowlan_wakeup *wakeup,
15591 gfp_t gfp)
15592 {
15593 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15594 struct sk_buff *msg;
15595 void *hdr;
15596 int size = 200;
15597
15598 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15599
15600 if (wakeup)
15601 size += wakeup->packet_present_len;
15602
15603 msg = nlmsg_new(size, gfp);
15604 if (!msg)
15605 return;
15606
15607 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15608 if (!hdr)
15609 goto free_msg;
15610
15611 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15612 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15613 NL80211_ATTR_PAD))
15614 goto free_msg;
15615
15616 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15617 wdev->netdev->ifindex))
15618 goto free_msg;
15619
15620 if (wakeup) {
15621 struct nlattr *reasons;
15622
15623 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15624 if (!reasons)
15625 goto free_msg;
15626
15627 if (wakeup->disconnect &&
15628 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15629 goto free_msg;
15630 if (wakeup->magic_pkt &&
15631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15632 goto free_msg;
15633 if (wakeup->gtk_rekey_failure &&
15634 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15635 goto free_msg;
15636 if (wakeup->eap_identity_req &&
15637 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15638 goto free_msg;
15639 if (wakeup->four_way_handshake &&
15640 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15641 goto free_msg;
15642 if (wakeup->rfkill_release &&
15643 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15644 goto free_msg;
15645
15646 if (wakeup->pattern_idx >= 0 &&
15647 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15648 wakeup->pattern_idx))
15649 goto free_msg;
15650
15651 if (wakeup->tcp_match &&
15652 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15653 goto free_msg;
15654
15655 if (wakeup->tcp_connlost &&
15656 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15657 goto free_msg;
15658
15659 if (wakeup->tcp_nomoretokens &&
15660 nla_put_flag(msg,
15661 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15662 goto free_msg;
15663
15664 if (wakeup->packet) {
15665 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15666 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15667
15668 if (!wakeup->packet_80211) {
15669 pkt_attr =
15670 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15671 len_attr =
15672 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15673 }
15674
15675 if (wakeup->packet_len &&
15676 nla_put_u32(msg, len_attr, wakeup->packet_len))
15677 goto free_msg;
15678
15679 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15680 wakeup->packet))
15681 goto free_msg;
15682 }
15683
15684 if (wakeup->net_detect &&
15685 cfg80211_net_detect_results(msg, wakeup))
15686 goto free_msg;
15687
15688 nla_nest_end(msg, reasons);
15689 }
15690
15691 genlmsg_end(msg, hdr);
15692
15693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15694 NL80211_MCGRP_MLME, gfp);
15695 return;
15696
15697 free_msg:
15698 nlmsg_free(msg);
15699 }
15700 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15701 #endif
15702
15703 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15704 enum nl80211_tdls_operation oper,
15705 u16 reason_code, gfp_t gfp)
15706 {
15707 struct wireless_dev *wdev = dev->ieee80211_ptr;
15708 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15709 struct sk_buff *msg;
15710 void *hdr;
15711
15712 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15713 reason_code);
15714
15715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15716 if (!msg)
15717 return;
15718
15719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15720 if (!hdr) {
15721 nlmsg_free(msg);
15722 return;
15723 }
15724
15725 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15726 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15727 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15728 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15729 (reason_code > 0 &&
15730 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15731 goto nla_put_failure;
15732
15733 genlmsg_end(msg, hdr);
15734
15735 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15736 NL80211_MCGRP_MLME, gfp);
15737 return;
15738
15739 nla_put_failure:
15740 nlmsg_free(msg);
15741 }
15742 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15743
15744 static int nl80211_netlink_notify(struct notifier_block * nb,
15745 unsigned long state,
15746 void *_notify)
15747 {
15748 struct netlink_notify *notify = _notify;
15749 struct cfg80211_registered_device *rdev;
15750 struct wireless_dev *wdev;
15751 struct cfg80211_beacon_registration *reg, *tmp;
15752
15753 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15754 return NOTIFY_DONE;
15755
15756 rcu_read_lock();
15757
15758 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15759 struct cfg80211_sched_scan_request *sched_scan_req;
15760
15761 list_for_each_entry_rcu(sched_scan_req,
15762 &rdev->sched_scan_req_list,
15763 list) {
15764 if (sched_scan_req->owner_nlportid == notify->portid) {
15765 sched_scan_req->nl_owner_dead = true;
15766 schedule_work(&rdev->sched_scan_stop_wk);
15767 }
15768 }
15769
15770 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15771 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15772
15773 if (wdev->owner_nlportid == notify->portid) {
15774 wdev->nl_owner_dead = true;
15775 schedule_work(&rdev->destroy_work);
15776 } else if (wdev->conn_owner_nlportid == notify->portid) {
15777 schedule_work(&wdev->disconnect_wk);
15778 }
15779 }
15780
15781 spin_lock_bh(&rdev->beacon_registrations_lock);
15782 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15783 list) {
15784 if (reg->nlportid == notify->portid) {
15785 list_del(&reg->list);
15786 kfree(reg);
15787 break;
15788 }
15789 }
15790 spin_unlock_bh(&rdev->beacon_registrations_lock);
15791 }
15792
15793 rcu_read_unlock();
15794
15795 /*
15796 * It is possible that the user space process that is controlling the
15797 * indoor setting disappeared, so notify the regulatory core.
15798 */
15799 regulatory_netlink_notify(notify->portid);
15800 return NOTIFY_OK;
15801 }
15802
15803 static struct notifier_block nl80211_netlink_notifier = {
15804 .notifier_call = nl80211_netlink_notify,
15805 };
15806
15807 void cfg80211_ft_event(struct net_device *netdev,
15808 struct cfg80211_ft_event_params *ft_event)
15809 {
15810 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15811 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15812 struct sk_buff *msg;
15813 void *hdr;
15814
15815 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15816
15817 if (!ft_event->target_ap)
15818 return;
15819
15820 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
15821 GFP_KERNEL);
15822 if (!msg)
15823 return;
15824
15825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15826 if (!hdr)
15827 goto out;
15828
15829 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15830 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15831 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15832 goto out;
15833
15834 if (ft_event->ies &&
15835 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15836 goto out;
15837 if (ft_event->ric_ies &&
15838 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15839 ft_event->ric_ies))
15840 goto out;
15841
15842 genlmsg_end(msg, hdr);
15843
15844 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15845 NL80211_MCGRP_MLME, GFP_KERNEL);
15846 return;
15847 out:
15848 nlmsg_free(msg);
15849 }
15850 EXPORT_SYMBOL(cfg80211_ft_event);
15851
15852 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15853 {
15854 struct cfg80211_registered_device *rdev;
15855 struct sk_buff *msg;
15856 void *hdr;
15857 u32 nlportid;
15858
15859 rdev = wiphy_to_rdev(wdev->wiphy);
15860 if (!rdev->crit_proto_nlportid)
15861 return;
15862
15863 nlportid = rdev->crit_proto_nlportid;
15864 rdev->crit_proto_nlportid = 0;
15865
15866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15867 if (!msg)
15868 return;
15869
15870 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15871 if (!hdr)
15872 goto nla_put_failure;
15873
15874 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15875 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15876 NL80211_ATTR_PAD))
15877 goto nla_put_failure;
15878
15879 genlmsg_end(msg, hdr);
15880
15881 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15882 return;
15883
15884 nla_put_failure:
15885 nlmsg_free(msg);
15886 }
15887 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15888
15889 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15890 {
15891 struct wiphy *wiphy = wdev->wiphy;
15892 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15893 struct sk_buff *msg;
15894 void *hdr;
15895
15896 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15897 if (!msg)
15898 return;
15899
15900 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15901 if (!hdr)
15902 goto out;
15903
15904 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15905 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15906 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15907 NL80211_ATTR_PAD))
15908 goto out;
15909
15910 genlmsg_end(msg, hdr);
15911
15912 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15913 NL80211_MCGRP_MLME, GFP_KERNEL);
15914 return;
15915 out:
15916 nlmsg_free(msg);
15917 }
15918
15919 int cfg80211_external_auth_request(struct net_device *dev,
15920 struct cfg80211_external_auth_params *params,
15921 gfp_t gfp)
15922 {
15923 struct wireless_dev *wdev = dev->ieee80211_ptr;
15924 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15925 struct sk_buff *msg;
15926 void *hdr;
15927
15928 if (!wdev->conn_owner_nlportid)
15929 return -EINVAL;
15930
15931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15932 if (!msg)
15933 return -ENOMEM;
15934
15935 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
15936 if (!hdr)
15937 goto nla_put_failure;
15938
15939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15941 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
15942 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
15943 params->action) ||
15944 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
15945 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
15946 params->ssid.ssid))
15947 goto nla_put_failure;
15948
15949 genlmsg_end(msg, hdr);
15950 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
15951 wdev->conn_owner_nlportid);
15952 return 0;
15953
15954 nla_put_failure:
15955 nlmsg_free(msg);
15956 return -ENOBUFS;
15957 }
15958 EXPORT_SYMBOL(cfg80211_external_auth_request);
15959
15960 /* initialisation/exit functions */
15961
15962 int __init nl80211_init(void)
15963 {
15964 int err;
15965
15966 err = genl_register_family(&nl80211_fam);
15967 if (err)
15968 return err;
15969
15970 err = netlink_register_notifier(&nl80211_netlink_notifier);
15971 if (err)
15972 goto err_out;
15973
15974 return 0;
15975 err_out:
15976 genl_unregister_family(&nl80211_fam);
15977 return err;
15978 }
15979
15980 void nl80211_exit(void)
15981 {
15982 netlink_unregister_notifier(&nl80211_netlink_notifier);
15983 genl_unregister_family(&nl80211_fam);
15984 }
Linux with added FPC-III support