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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [include/] [net/] [if_tun.h] - Rev 207

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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: src/sys/net/if_tun.h,v 1.17 2000/01/23 01:47:12 brian Exp $
 */
 
#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_ */
 

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