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/* $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd 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 its 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.
*
* $FreeBSD: release/9.1.0/sys/net/if_tun.h 139823 2005-01-07 01:45:51Z imp $
*/
#ifndef _NET_IF_TUN_H_
#define _NET_IF_TUN_H_
/* Refer to if_tunvar.h for the softc stuff */
/* Maximum transmit packet size (default) */
#define TUNMTU 1500
/* Maximum receive packet size (hard limit) */
#define TUNMRU 16384
struct tuninfo {
int baudrate; /* linespeed */
short mtu; /* maximum transmission unit */
u_char type; /* ethernet, tokenring, etc. */
u_char dummy; /* place holder */
};
/* ioctl's for get/set debug */
#define TUNSDEBUG _IOW('t', 90, int)
#define TUNGDEBUG _IOR('t', 89, int)
#define TUNSIFINFO _IOW('t', 91, struct tuninfo)
#define TUNGIFINFO _IOR('t', 92, struct tuninfo)
#define TUNSLMODE _IOW('t', 93, int)
#define TUNSIFMODE _IOW('t', 94, int)
#define TUNSIFPID _IO('t', 95)
#define TUNSIFHEAD _IOW('t', 96, int)
#define TUNGIFHEAD _IOR('t', 97, int)
#endif /* !_NET_IF_TUN_H_ */