94 lines
3.8 KiB
Groff
94 lines
3.8 KiB
Groff
.\" $NetBSD: esh.4,v 1.9 2001/09/19 00:49:58 wiz Exp $
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.\"
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.\" Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Kevin Lahey of the Numerical Aerospace Simulation Facility,
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.\" NASA Ames Research Center.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd January 28, 1998
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.Dt ESH 4
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.Os
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.Sh NAME
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.Nm esh
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.Nd RoadRunner-based HIPPI interfaces device driver
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.Sh SYNOPSIS
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.Cd "esh* at pci? dev ? function ?"
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.Sh DESCRIPTION
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The
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.Nm
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device driver supports the Essential Communications RoadRunner-based
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HIPPI interfaces. With some modifications, the driver could be
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made to support the Gigabit Ethernet card based on the same chip.
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.Pp
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The driver supports both a normal network interface and a raw
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HIPPI Framing Protocol (HIPPI-FP) device.
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The HIPPI-FP interface is accessed via the
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.Pa /dev/esh Ns Sy N/ulp Ns Sy N
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set of devices. There are 255 available Upper Layer Protocols
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in FP; these are selectable via the various device entries.
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.Pp
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HIPPI is an 800-megabit/sec networking technology which supports
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extremely large packet sizes. In order to efficiently use this
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network, the kernel should be configured with extra mbufs, and
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the default socket buffer size should be increased to at least
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192KB, regardless of the expected bandwidth-delay product of the
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network.
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.Pp
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HIPPI ARP is not widely used, and the
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.Nx
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stack does not support it
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(yet). In order to define the mappings between IP addresses and
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ifields (the HIPPI MAC addresses), the administrator must make
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link-layer entries in the routing table using the
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.Xr route 8
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command:
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.Bd -unfilled -offset indent
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route add -interface 129.99.154.101 -llinfo -link esh0:3.0.0.65
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.Ed
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.\" .Sh OPTIONS
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.Sh MEDIA SELECTION
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Media selection is not yet supported for this device.
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.\" .Sh DIAGNOSTICS
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.Sh SEE ALSO
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.Xr intro 4 ,
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.Xr pci 4 ,
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.Xr eshconfig 8 ,
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.Xr ifconfig 8 ,
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.Xr route 8
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.Sh BUGS
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The card must be tuned for proper and efficient DMA operation.
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The appropriate values vary based on the system.
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The
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.Xr eshconfig 8
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program is used for this.
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