55 lines
1.9 KiB
Groff
55 lines
1.9 KiB
Groff
.\" $NetBSD: canloop.4,v 1.3 2017/05/29 08:42:33 wiz Exp $
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.\"
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.\" Copyright (c) 2017 Manuel Bouyer.
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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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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd May 18, 2017
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.Dt CANLOOP 4
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.Os
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.Sh NAME
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.Nm canloop
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.Nd software loopback CAN network interface
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.Sh SYNOPSIS
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.Cd "pseudo-device canloop"
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.Sh DESCRIPTION
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The
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.Nm canloop
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pseudo interface is a loopback interface for the CAN layer.
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It can be used as destination by a CAN application, when no CAN
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hardware is available.
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Other sockets bound to the same
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.Nm canloop
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interface (or not bound to any interface) will receive the frames.
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.Pp
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.Nm canloop
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interfaces can be created by using the
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.Xr ifconfig 8
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.Cm create
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command.
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.Sh SEE ALSO
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.Xr can 4 ,
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.Xr intro 4 ,
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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device appeared in
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.Nx 8.0 .
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