Subversion Repositories SvarDOS

/*!\file net/if_tun.h
 * Interface tunneling.
 */

/*      $NetBSD: if_tun.h,v 1.6 1996/06/25 22:15:18 pk 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.
 * 
 * : $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

struct tun_softc {
        u_short tun_flags;              /* misc flags */
#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_PREPADDR    0x0200

#define TUN_READY       (TUN_OPEN | TUN_INITED | TUN_IASET)

        struct  ifnet tun_if;           /* the interface */
        int     tun_pgrp;               /* the process group - if any */
        struct  selinfo tun_rsel;       /* read select */
        struct  selinfo tun_wsel;       /* write select (not used) */
#if NBPFILTER > 0
        caddr_t         tun_bpf;
#endif

};

/* Maximum packet size */
#define TUNMTU          1500

/* ioctl's for get/set debug */
#define TUNSDEBUG       _IOW('t', 90, int)
#define TUNGDEBUG       _IOR('t', 89, int)
#define TUNSIFMODE      _IOW('t', 88, int)
#define TUNSLMODE       _IOW('t', 87, int)

#endif