1.\" Copyright (c) 2004 Ruslan Ermilov 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd May 5, 2010 28.Dt NG_HUB 4 29.Os 30.Sh NAME 31.Nm ng_hub 32.Nd packet distribution netgraph node type 33.Sh SYNOPSIS 34.In netgraph/ng_hub.h 35.Sh DESCRIPTION 36The 37.Nm hub 38node type provides a simple mechanism for distributing packets over 39several links. 40Packets received on any of the hooks are forwarded out the other hooks. 41Packets are not altered in any way. 42.Sh HOOKS 43A 44.Nm hub 45node accepts any request to connect, regardless of the hook name, 46as long as the name is unique. 47.Sh CONTROL MESSAGES 48This node type supports the generic control messages, plus the 49following: 50.Bl -tag -width foo 51.It Dv NGM_HUB_SET_PERSISTENT Pq Ic setpersistent 52This command sets the persistent flag on the node, and takes no arguments. 53.El 54.Sh SHUTDOWN 55This node shuts down upon receipt of a 56.Dv NGM_SHUTDOWN 57control message, or when all hooks have been disconnected. Setting the 58persistent flag via a 59.Dv NGM_HUB_SET_PERSISTENT 60control message disables automatic node shutdown when the last hook gets 61disconnected. 62.Sh SEE ALSO 63.Xr netgraph 4 , 64.Xr ng_bridge 4 , 65.Xr ng_ether 4 , 66.Xr ng_one2many 4 , 67.Xr ngctl 8 , 68.Xr nghook 8 69.Sh HISTORY 70The 71.Nm 72node type appeared in 73.Fx 5.3 . 74.Sh AUTHORS 75.An Ruslan Ermilov Aq Mt ru@FreeBSD.org 76