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