1/*
2 * Copyright (c) 1999-2010 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#ifndef IPTAP_H
29#define IPTAP_H
30
31#include <net/if.h>
32
33#define IPTAP_CONTROL_NAME "com.apple.net.iptap_control"
34
35#define IPTAP_BUFFERSZ	(128 * 1024)
36#define IPTAP_VERSION_1		0x1
37
38enum {
39	IPTAP_OUTPUT_TAG	=	0x01,
40	IPTAP_INPUT_TAG		=	0x10,
41	IPTAP_UNKNOWN_TAG	=	0x11
42};
43
44#pragma pack(push)
45#pragma pack(1)
46
47typedef struct iptap_hdr_t {
48	uint32_t	hdr_length;
49	uint8_t		version;
50	uint32_t	length;
51	uint8_t		type;
52	uint16_t	unit;
53	uint8_t		io;
54	uint32_t	protocol_family;
55	uint32_t	frame_pre_length;
56	uint32_t	frame_pst_length;
57	char		if_name[IFNAMSIZ];
58} __attribute__ ((__packed__)) iptap_hdr_t;
59
60#pragma pack(pop)
61
62#ifdef KERNEL_PRIVATE
63
64extern void iptap_init(void);
65extern void iptap_ipf_input(struct ifnet *, protocol_family_t, struct mbuf *, char *);
66extern void iptap_ipf_output(struct ifnet *, protocol_family_t, struct mbuf *, u_int32_t, u_int32_t);
67#if 0
68extern void iptap_destroy(void);
69#endif
70
71#endif /* KERNEL_PRIVATE */
72#endif /* IPTAP_H */