freebsd-src/sys/net/if_tap.h
Nick Sayer a5213f145a Add the tap driver.
The tap driver is used to present a virtual Ethernet interface to the
system. Packets presented by the network stack to the interface are
made available to a character device in /dev. With tap and the bridge
code, you can make remote bridge configurations where both sides of
the bridge are separated by userland daemons.

This driver also has a special naming hack to allow it to serve a similar
purpose to the vmware port.

Submitted by:	myevmenkin@att.com, vsilyaev@mindspring.com
2000-07-20 17:01:10 +00:00

74 lines
2.6 KiB
C

/*
* Copyright (C) 1999-2000 by Maksim Yevmenkin <m_evmenkin@yahoo.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* BASED ON:
* -------------------------------------------------------------------------
*
* Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
* Nottingham University 1987.
*/
/*
* $FreeBSD$
* $Id: if_tap.h,v 0.7 2000/07/12 04:12:51 max Exp $
*/
#ifndef _NET_IF_TAP_H_
#define _NET_IF_TAP_H_
/* refer to if_tapvar.h for the softc stuff */
/* maximum receive packet size (hard limit) */
#define TAPMRU 16384
struct tapinfo {
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 TAPSDEBUG _IOW('t', 90, int)
#define TAPGDEBUG _IOR('t', 89, int)
#define TAPSIFINFO _IOW('t', 91, struct tapinfo)
#define TAPGIFINFO _IOR('t', 92, struct tapinfo)
/* VMware ioctl's */
#define VMIO_SIOCSIFFLAGS _IO('V', 0)
#define VMIO_SIOCSKEEP _IO('V', 1)
#define VMIO_SIOCSIFBR _IO('V', 2)
#define VMIO_SIOCSLADRF _IO('V', 3)
/* XXX -- unimplemented */
#define VMIO_SIOCSETMACADDR _IO('V', 4)
/* XXX -- not used? */
#define VMIO_SIOCPORT _IO('V', 5)
#define VMIO_SIOCBRIDGE _IO('V', 6)
#define VMIO_SIOCNETIF _IO('V', 7)
#endif /* !_NET_IF_TAP_H_ */