1/*
2 * Copyright (c) 2008-2011 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29
30#ifndef	_NET_IF_UTUN_H_
31#define	_NET_IF_UTUN_H_
32
33#include <net/if_utun_crypto.h>
34
35#ifdef KERNEL_PRIVATE
36
37#include <sys/kern_control.h>
38
39/* Control block allocated for each kernel control connection */
40struct utun_pcb {
41	kern_ctl_ref	utun_ctlref;
42	ifnet_t			utun_ifp;
43	u_int32_t		utun_unit;
44	u_int32_t		utun_flags;
45	int				utun_ext_ifdata_stats;
46	utun_crypto_ctx_t utun_crypto_ctx[UTUN_CRYPTO_CTX_NUM_DIRS];
47};
48
49void* utun_alloc(size_t size);
50void utun_free(void *ptr);
51errno_t utun_register_control(void);
52
53#endif
54
55/*
56 * Name registered by the utun kernel control
57 */
58#define UTUN_CONTROL_NAME "com.apple.net.utun_control"
59
60/*
61 * Socket option names to manage utun
62 */
63#define UTUN_OPT_FLAGS							1
64#define UTUN_OPT_IFNAME							2
65#define UTUN_OPT_EXT_IFDATA_STATS				3	/* get|set (type int) */
66#define UTUN_OPT_INC_IFDATA_STATS_IN			4	/* set to increment stat counters (type struct utun_stats_param) */
67#define UTUN_OPT_INC_IFDATA_STATS_OUT			5	/* set to increment stat counters (type struct utun_stats_param) */
68#define UTUN_OPT_ENABLE_CRYPTO					6
69#define UTUN_OPT_CONFIG_CRYPTO_KEYS				7
70#define UTUN_OPT_UNCONFIG_CRYPTO_KEYS			8
71#define UTUN_OPT_GENERATE_CRYPTO_KEYS_IDX		9
72#define UTUN_OPT_DISABLE_CRYPTO					10
73#define UTUN_OPT_STOP_CRYPTO_DATA_TRAFFIC		11
74#define UTUN_OPT_START_CRYPTO_DATA_TRAFFIC		12
75
76/*
77 * Flags for by UTUN_OPT_FLAGS
78 */
79#define	UTUN_FLAGS_NO_OUTPUT		0x0001
80#define UTUN_FLAGS_NO_INPUT			0x0002
81#define UTUN_FLAGS_CRYPTO			0x0004
82#define UTUN_FLAGS_CRYPTO_STOP_DATA_TRAFFIC	0x0008
83
84/*
85 * utun packet type flags
86 */
87#define UTUN_PKT_TYPE_KEEPALIVE					0x0001
88#define UTUN_PKT_TYPE_IPSEC						0x0002
89#define UTUN_PKT_TYPE_DTLS						0x0004
90
91
92/*
93 * utun stats parameter structure
94 */
95struct utun_stats_param {
96        u_int64_t       utsp_packets;
97        u_int64_t       utsp_bytes;
98        u_int64_t       utsp_errors;
99};
100
101#endif
102