1.\" Copyright (c) 2001 FreeBSD inc. 2.\" All rights reserved. 3.\" 4.\" Subject to the following obligations and disclaimer of warranty, use and 5.\" redistribution of this software, in source or object code forms, with or 6.\" without modifications are expressly permitted by FreeBSD Inc.; 7.\" provided, however, that: 8.\" 1. Any and all reproductions of the source or object code must include the 9.\" copyright notice above and the following disclaimer of warranties; and 10.\" 2. No rights are granted, in any manner or form, to use FreeBSD 11.\" Inc., Inc. trademarks, including the mark "FREEBSD 12.\" INC." on advertising, endorsements, or otherwise except as 13.\" such appears in the above copyright notice or in the software. 14.\" 15.\" THIS SOFTWARE IS BEING PROVIDED BY FREEBSD INC. "AS IS", AND 16.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, FreeBSD Inc. MAKES NO 17.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 18.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 19.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 20.\" FreeBSD Inc. DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 21.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 22.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 23.\" IN NO EVENT SHALL FreeBSD Inc. BE LIABLE FOR ANY DAMAGES 24.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 25.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 26.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 27.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF FreeBSD Inc. IS ADVISED OF THE POSSIBILITY 31.\" OF SUCH DAMAGE. 32.\" 33.\" Author: Julian Elischer <julian@FreeBSD.org> 34.\" 35.\" $FreeBSD$ 36.\" 37.Dd February 19, 2001 38.Dt NG_SPLIT 4 39.Os 40.Sh NAME 41.Nm ng_split 42.Nd netgraph node to separate incoming and outgoing flows 43.Sh SYNOPSIS 44.In netgraph/ng_split.h 45.Sh DESCRIPTION 46The 47.Nm split 48node type is used to split a bidirectional stream of packets into 49two separate unidirectional streams of packets. 50.Sh HOOKS 51This node type supports the following three hooks: 52.Bl -tag -width ".Va mixed" 53.It Va in 54Packets received on 55.Em in 56are forwarded to 57.Em mixed . 58.It Va out 59Packets received on 60.Em out 61will be discarded as illegal. 62.It Va mixed 63Packets received on 64.Em mixed 65are forwarded to 66.Em out . 67.El 68.Sh CONTROL MESSAGES 69This node type supports only the generic control messages. 70.Sh SHUTDOWN 71This node shuts down upon receipt of a 72.Dv NGM_SHUTDOWN 73control message, or when all hooks have been disconnected. 74.Sh SEE ALSO 75.Xr netgraph 4 , 76.Xr ngctl 8 77.Sh HISTORY 78The 79.Nm 80node type was implemented in 81.Fx 3.5 82but incorporated into 83.Fx 84in 85.Fx 5.0 . 86.Sh AUTHORS 87.An Julian Elischer Aq Mt julian@FreeBSD.org 88.An Vitaly V. Belekhov Aq Mt vitaly@riss-telecom.ru 89