76 lines
2.5 KiB
Groff
76 lines
2.5 KiB
Groff
.\" Copyright (c) 2004 Ruslan Ermilov
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.\" All rights reserved.
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.\"
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 5, 2010
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.Dt NG_HUB 4
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.Os
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.Sh NAME
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.Nm ng_hub
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.Nd packet distribution netgraph node type
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.Sh SYNOPSIS
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.In netgraph/ng_hub.h
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.Sh DESCRIPTION
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The
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.Nm hub
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node type provides a simple mechanism for distributing packets over
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several links.
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Packets received on any of the hooks are forwarded out the other hooks.
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Packets are not altered in any way.
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.Sh HOOKS
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A
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.Nm hub
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node accepts any request to connect, regardless of the hook name,
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as long as the name is unique.
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.Sh CONTROL MESSAGES
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This node type supports the generic control messages, plus the
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following:
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.Bl -tag -width foo
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.It Dv NGM_HUB_SET_PERSISTENT Pq Ic setpersistent
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This command sets the persistent flag on the node, and takes no arguments.
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.El
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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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Setting the persistent flag via a
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.Dv NGM_HUB_SET_PERSISTENT
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control message disables automatic node shutdown when the last hook gets
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disconnected.
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.Sh SEE ALSO
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.Xr netgraph 4 ,
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.Xr ng_bridge 4 ,
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.Xr ng_ether 4 ,
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.Xr ng_one2many 4 ,
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.Xr ngctl 8 ,
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.Xr nghook 8
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.Sh HISTORY
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The
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.Nm
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node type appeared in
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.Fx 5.3 .
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.Sh AUTHORS
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.An Ruslan Ermilov Aq Mt ru@FreeBSD.org
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