1/*
2 * Copyright (c) 2000 Apple Computer, 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/* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
31 * Nottingham University 1987.
32 *
33 * This source may be freely distributed, however I would be interested
34 * in any changes that are made.
35 *
36 * This driver takes packets off the IP i/f and hands them up to a
37 * user process to have it's wicked way with. This driver has it's
38 * roots in a similar driver written by Phil Cockcroft (formerly) at
39 * UCL. This driver is based much more on read/write/select mode of
40 * operation though.
41 *
42 */
43
44#ifndef _NET_IF_TUN_H_
45#define _NET_IF_TUN_H_
46#include <sys/appleapiopts.h>
47
48#ifdef KERNEL_PRIVATE
49struct tun_softc {
50	u_short	tun_flags;		/* misc flags */
51#define	TUN_OPEN	0x0001
52#define	TUN_INITED	0x0002
53#define	TUN_RCOLL	0x0004
54#define	TUN_IASET	0x0008
55#define	TUN_DSTADDR	0x0010
56#define	TUN_RWAIT	0x0040
57#define	TUN_ASYNC	0x0080
58#define	TUN_NBIO	0x0100
59
60#define	TUN_READY	(TUN_OPEN | TUN_INITED | TUN_IASET)
61
62	struct	ifnet tun_if;		/* the interface */
63	int	tun_pgrp;		/* the process group - if any */
64	struct	selinfo	tun_rsel;	/* read select */
65	struct	selinfo	tun_wsel;	/* write select (not used) */
66#if NBPFILTER > 0
67	caddr_t		tun_bpf;
68#endif
69};
70
71#endif /* KERNEL_PRIVATE */
72
73/* ioctl's for get/set debug */
74#define	TUNSDEBUG	_IOW('t', 90, int)
75#define	TUNGDEBUG	_IOR('t', 89, int)
76
77/* Maximum packet size */
78#define	TUNMTU		1500
79
80#endif /* !_NET_IF_TUN_H_ */
81