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/* $OpenBSD: if_tun.h,v 1.8 1998/08/02 07:17:44 brian Exp $ */
/*
* Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
* Nottingham University 1987.
*
* This source may be freely distributed, however I would be interested
* in any changes that are made.
*
* This driver takes packets off the IP i/f and hands them up to a
* user process to have it's wicked way with. This driver has it's
* roots in a similar driver written by Phil Cockcroft (formerly) at
* UCL. This driver is based much more on read/write/select mode of
* operation though.
*
* from: @Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp
*/
#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
#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_READY (TUN_OPEN | TUN_INITED | TUN_IASET)
/* Maximum packet size */
#define TUNMTU 3000
/* Maximum receive packet size (hard limit) */
#define TUNMRU 16384
/* ioctl's for get/set debug */
#define TUNSDEBUG _IOW('t', 89, int)
#define TUNGDEBUG _IOR('t', 90, int)
/* 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)
#endif /* !_NET_IF_TUN_H_ */
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