/*
 * if_tap.h, written by Mouse, based largely on NetBSD's if_tun.h,
 * which is marked thus:
 *
 *** 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
 *
 * Any intellectual property rights I (Mouse) have in this work I
 *  hereby release into the public domain.
 */

#ifndef _NET_IF_TAP_H_
#define _NET_IF_TAP_H_

/* Hard limit on packet size */
#define	TAPMAXPKT 32768

/*
 * This interface is designed to be compatible with the FreeBSD/Linux tap.
 */

#define TAPMRU TAPMAXPKT

struct tapinfo {
  int baudrate;
  short int mtu;
  unsigned char type;
  unsigned char dummy; /* does anything care about this? */
  } ;

#define TAPGDEBUG		_IOR('t', 89, int)
#define TAPSDEBUG		_IOW('t', 90, int)
#define TAPSIFINFO		_IOW('t', 91, struct tapinfo)
#define TAPGIFINFO		_IOR('t', 92, struct tapinfo)

#define VMIO_SIOCSIFFLAGS	_IO('V', 0)
#define VMIO_SIOCSKEEP		_IO('V', 1)
#define VMIO_SIOCSIFBR		_IO('V', 2)
#define VMIO_SIOCSLADRF		_IO('V', 3)
#define VMIO_SIOCSETMACADDR	_IO('V', 4)
#define VMIO_SIOCPORT		_IO('V', 5)
#define VMIO_SIOCBRIDGE		_IO('V', 6)
#define VMIO_SIOCNETIF		_IO('V', 7)

/* Control device read/write interface */
/* Data block consists of an unsigned int, which is a flags word.
   Bits set in the flags word indicate which other pieces are present. */

/* Flag bits, and structs describing the data.  If multiple pieces are
   present, they occur in order of increasing TAPF_* value (ie, LSB's
   data first, MSB's data last). */

#define TAPF_MAC 0x00000001
struct tapf_mac {
  unsigned char mac[6];
  } ;

#define TAPF__ALL 0x00000001

#endif /* !_NET_IF_TAP_H_ */