76 lines
2.5 KiB
Groff
76 lines
2.5 KiB
Groff
.\" Copyright (c) 2004 Ruslan Ermilov
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 5, 2010
|
|
.Dt NG_HUB 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ng_hub
|
|
.Nd packet distribution netgraph node type
|
|
.Sh SYNOPSIS
|
|
.In netgraph/ng_hub.h
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm hub
|
|
node type provides a simple mechanism for distributing packets over
|
|
several links.
|
|
Packets received on any of the hooks are forwarded out the other hooks.
|
|
Packets are not altered in any way.
|
|
.Sh HOOKS
|
|
A
|
|
.Nm hub
|
|
node accepts any request to connect, regardless of the hook name,
|
|
as long as the name is unique.
|
|
.Sh CONTROL MESSAGES
|
|
This node type supports the generic control messages, plus the
|
|
following:
|
|
.Bl -tag -width foo
|
|
.It Dv NGM_HUB_SET_PERSISTENT Pq Ic setpersistent
|
|
This command sets the persistent flag on the node, and takes no arguments.
|
|
.El
|
|
.Sh SHUTDOWN
|
|
This node shuts down upon receipt of a
|
|
.Dv NGM_SHUTDOWN
|
|
control message, or when all hooks have been disconnected. Setting the
|
|
persistent flag via a
|
|
.Dv NGM_HUB_SET_PERSISTENT
|
|
control message disables automatic node shutdown when the last hook gets
|
|
disconnected.
|
|
.Sh SEE ALSO
|
|
.Xr netgraph 4 ,
|
|
.Xr ng_bridge 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr ng_one2many 4 ,
|
|
.Xr ngctl 8 ,
|
|
.Xr nghook 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
node type appeared in
|
|
.Fx 5.3 .
|
|
.Sh AUTHORS
|
|
.An Ruslan Ermilov Aq ru@FreeBSD.org
|