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/* $OpenBSD: if_tun.h,v 1.17 2024/11/14 13:47:38 sthen Exp $ */
/*
* Copyright (c) 1988, Julian Onions <Julian.Onions@nexor.co.uk>
* Nottingham University 1987.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NET_IF_TUN_H_
#define _NET_IF_TUN_H_
#include <sys/ioccom.h>
#define TUN_OPEN 0x0001
#define TUN_INITED 0x0002
#define TUN_RCOLL 0x0004 /* unused */
#define TUN_IASET 0x0008
#define TUN_DSTADDR 0x0010
#define TUN_RWAIT 0x0040
#define TUN_ASYNC 0x0080
#define TUN_NBIO 0x0100
#define TUN_BRDADDR 0x0200
#define TUN_STAYUP 0x0400
#define TUN_LAYER2 0x0800
#define TUN_READY (TUN_OPEN | TUN_INITED)
/* Maximum packet size */
#define TUNMTU 3000
/* Maximum receive packet size (hard limit) */
#define TUNMRU 16384
/* iface info */
struct tuninfo {
u_int mtu;
u_short type;
u_short flags;
u_int baudrate;
};
#define TUNSIFINFO _IOW('t', 91, struct tuninfo)
#define TUNGIFINFO _IOR('t', 92, struct tuninfo)
/* ioctl for changing the broadcast/point-to-point status */
#define TUNSIFMODE _IOW('t', 93, int)
/* ioctl's for get/set debug */
#define TUNSDEBUG _IOW('t', 94, int)
#define TUNGDEBUG _IOR('t', 95, int)
#endif /* _NET_IF_TUN_H_ */
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