89 lines
3.0 KiB
Groff
89 lines
3.0 KiB
Groff
.\" Copyright (c) 2001 FreeBSD inc.
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.\" All rights reserved.
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.\"
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.\" Subject to the following obligations and disclaimer of warranty, use and
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.\" redistribution of this software, in source or object code forms, with or
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.\" without modifications are expressly permitted by FreeBSD Inc.;
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.\" provided, however, that:
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.\" 1. Any and all reproductions of the source or object code must include the
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.\" copyright notice above and the following disclaimer of warranties; and
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.\" 2. No rights are granted, in any manner or form, to use FreeBSD
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.\" Inc., Inc. trademarks, including the mark "FREEBSD
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.\" INC." on advertising, endorsements, or otherwise except as
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.\" such appears in the above copyright notice or in the software.
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.\"
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.\" THIS SOFTWARE IS BEING PROVIDED BY FREEBSD INC. "AS IS", AND
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.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, FreeBSD Inc. MAKES NO
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.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
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.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
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.\" FreeBSD Inc. DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
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.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
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.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
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.\" IN NO EVENT SHALL FreeBSD Inc. BE LIABLE FOR ANY DAMAGES
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.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
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.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
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.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 FreeBSD Inc. IS ADVISED OF THE POSSIBILITY
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.\" OF SUCH DAMAGE.
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.\"
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.\" Author: Julian Elischer <julian@FreeBSD.org>
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 19, 2001
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.Dt NG_SPLIT 4
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.Os
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.Sh NAME
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.Nm ng_split
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.Nd netgraph node to separate incoming and outgoing flows
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.Sh SYNOPSIS
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.In netgraph/ng_split.h
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.Sh DESCRIPTION
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The
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.Nm split
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node type is used to split a bidirectional stream of packets into
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two separate unidirectional streams of packets.
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.Sh HOOKS
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This node type supports the following three hooks:
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.Bl -tag -width ".Va mixed"
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.It Va in
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Packets received on
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.Em in
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are forwarded to
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.Em mixed .
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.It Va out
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Packets received on
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.Em out
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will be discarded as illegal.
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.It Va mixed
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Packets received on
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.Em mixed
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are forwarded to
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.Em out .
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.El
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.Sh CONTROL MESSAGES
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This node type supports only the generic control messages.
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.Sh SHUTDOWN
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This node shuts down upon receipt of a
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.Dv NGM_SHUTDOWN
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control message, or when all hooks have been disconnected.
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.Sh SEE ALSO
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.Xr netgraph 4 ,
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.Xr ngctl 8
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.Sh HISTORY
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The
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.Nm
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node type was implemented in
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.Fx 3.5
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but incorporated into
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.Fx
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in
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.Fx 5.0 .
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.Sh AUTHORS
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.An Julian Elischer Aq julian@FreeBSD.org
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.An Vitaly V. Belekhov Aq vitaly@riss-telecom.ru
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