1 /* $OpenBSD: if_tun.h,v 1.15 2007/02/06 10:49:40 claudio Exp $ */
2
3 /*
4 * Copyright (c) 1988, Julian Onions <Julian.Onions@nexor.co.uk>
5 * Nottingham University 1987.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef _NET_IF_TUN_H_
30 #define _NET_IF_TUN_H_
31
32 #include <sys/ioccom.h>
33
34 #define TUN_OPEN 0x0001
35 #define TUN_INITED 0x0002
36 #define TUN_RCOLL 0x0004 /* unused */
37 #define TUN_IASET 0x0008
38 #define TUN_DSTADDR 0x0010
39 #define TUN_RWAIT 0x0040
40 #define TUN_ASYNC 0x0080
41 #define TUN_NBIO 0x0100
42 #define TUN_BRDADDR 0x0200
43 #define TUN_STAYUP 0x0400
44 #define TUN_LAYER2 0x0800
45
46 #define TUN_READY (TUN_OPEN | TUN_INITED)
47
48 /* Maximum packet size */
49 #define TUNMTU 3000
50
51 /* Maximum receive packet size (hard limit) */
52 #define TUNMRU 16384
53
54 /* iface info */
55 struct tuninfo {
56 u_int mtu;
57 u_short type;
58 u_short flags;
59 u_int baudrate;
60 };
61 #define TUNSIFINFO _IOW('t', 91, struct tuninfo)
62 #define TUNGIFINFO _IOR('t', 92, struct tuninfo)
63
64 /* ioctl for changing the broadcast/point-to-point status */
65 #define TUNSIFMODE _IOW('t', 93, int)
66
67 /* ioctl's for get/set debug */
68 #define TUNSDEBUG _IOW('t', 94, int)
69 #define TUNGDEBUG _IOR('t', 95, int)
70
71 #endif /* _NET_IF_TUN_H_ */