2004-03-08 13:46:52 +00:00
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.\" Copyright (c) 2004 Benno Rice <benno@FreeBSD.org>
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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 March 8, 2004
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.Dt NG_ATMLLC 4
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.Os
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.Sh NAME
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.Nm ng_atmllc
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.Nd ATM LLC netgraph node type
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.Sh SYNOPSIS
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.In netgraph/ng_atmllc.h
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.Sh DESCRIPTION
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The
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.Nm atmllc
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node type translates frames in to and out of ATM LLC encapsulation,
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as specified by RFC 1483.
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In LLC encapsulation the protocol of a given protocol data unit (PDU) is
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specified by an IEEE 802.2 LLC header, possibly followed by an IEEE 802.1a
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SubNetwork Attachment Point (SNAP) header.
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This node currently handles the Ethernet and FDDI protocols.
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.Pp
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The node transmits and receives ATM PDUs on the
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.Va atm
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hook.
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Received PDUs are decoded and forwarded to the
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.Va ether
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or
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.Va fddi
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hooks as appropriate.
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Data received on the
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.Va ether
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or
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.Va fddi
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hooks are assumed to be full Ethernet or FDDI packets as appropriate and are
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encapsulated into a PDU and transmitted via the
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.Va atm
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hook.
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.Sh HOOKS
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This node type supports the following hooks:
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.Bl -tag -width indent
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.It Va atm
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ATM connection.
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Typically, this hook would be connected to a
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.Xr ng_atm 4
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node, which handles transmission of ATM PDUs over an ATM device.
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.It Va ether
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Ethernet connection.
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This hook sends and receives Ethernet frames.
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This would normally be connected to an
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.Xr ng_eiface 4
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node if in use.
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.It Va fddi
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FDDI connection.
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This hook sends and receives FDDI frames.
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.El
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.Sh CONTROL MESSAGES
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This node type supports 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 ng_atm 4 ,
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.Xr ng_eiface 4 ,
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.Xr ngctl 8
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.Rs
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.%A J. Heinanen
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.%T "Multiprotocol Encapsulation over ATM Adaptation Layer 5"
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.%O RFC 1483
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.Re
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.Sh AUTHORS
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.An Benno Rice Aq benno@FreeBSD.org
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