.\"	$OpenBSD: nge.4,v 1.34 2008/10/28 06:27:28 brad Exp $
.\" Copyright (c) 2001 Wind River Systems
.\" Copyright (c) 1997, 1998, 1999, 2000, 2001
.\"	Bill Paul <wpaul@bsdi.com>. 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.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\"    may be used to endorse or promote products derived from this software
.\"   without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
.\" 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: nge.4,v 1.11 2002/08/08 18:30:39 ambrisko Exp $
.\"
.Dd $Mdocdate: October 28 2008 $
.Dt NGE 4
.Os
.Sh NAME
.Nm nge
.Nd National Semiconductor PCI 10/100/Gigabit Ethernet device
.Sh SYNOPSIS
.Cd "nge* at pci?"
.Cd "nsgphy* at mii?"
.Sh DESCRIPTION
The
.Nm
driver provides support for various NICs based on the National Semiconductor
DP83820 and DP83821 Gigabit Ethernet controller chips, including the
following:
.Pp
.Bl -bullet -compact
.It
Addtron AEG320T
.It
Ark PC SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T (64-bit PCI)
.It
Asante FriendlyNet GigaNIX 1000TA and 1000TPC
.It
D-Link DGE-500T
.It
Linksys EG1032v1 (32-bit PCI) and EG1064v1 (64-bit PCI)
.It
Netgear GA621
.It
Netgear GA622T
.It
SMC EZ Card 1000 (SMC9462TX)
.It
Surecom Technology EP-320G-TX
.It
TRENDnet TEG-PCITX (32-bit PCI) and TEG-PCITX2 (64-bit PCI)
.El
.Pp
The
.Nm
driver supports IPv4 receive IP/TCP/UDP checksum offload, VLAN tag
insertion and stripping, as well as a 2048-bit multicast hash filter
and up to 4 pattern match buffers.
.Pp
The
.Nm
driver also supports Jumbo frames, which can be configured via the
interface MTU setting.
Selecting an MTU larger than 1500 bytes with the
.Xr ifconfig 8
utility configures the adapter to receive and transmit Jumbo frames.
Using Jumbo frames can greatly improve performance for certain tasks,
such as file transfers and data streaming.
.Pp
The
.Nm
driver supports the following media types:
.Bl -tag -width full-duplex
.It Cm autoselect
Enable autoselection of the media type and options.
The user can manually override
the autoselected mode by adding media options to the appropriate
.Xr hostname.if 5
file.
.It Cm 10baseT
Set 10Mbps operation.
The
.Xr ifconfig 8
.Ic mediaopt
option can also be used to select either
.Cm full-duplex
or
.Cm half-duplex
modes.
.It Cm 100baseTX
Set 100Mbps (Fast Ethernet) operation.
The
.Xr ifconfig 8
.Ic mediaopt
option can also be used to select either
.Cm full-duplex
or
.Cm half-duplex
modes.
.It Cm 1000baseT
Set 1000baseT operation over twisted pair.
Both
.Cm full-duplex
and
.Cm half-duplex
modes are supported.
.It Cm 1000baseSX
Set 1000Mbps (Gigabit Ethernet) operation.
Both
.Cm full-duplex
and
.Cm half-duplex
modes are supported.
.El
.Pp
The
.Nm
driver supports the following media options:
.Bl -tag -width full-duplex
.It Cm full-duplex
Force full duplex operation.
.It Cm half-duplex
Force half duplex operation.
.El
.Pp
For more information on configuring this device, see
.Xr ifconfig 8 .
.Sh SEE ALSO
.Xr arp 4 ,
.Xr ifmedia 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr nsgphy 4 ,
.Xr pci 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Rs
.%T National Semiconductor DP83820 datasheet
.%O http://www.national.com
.Re
.Rs
.%T National Semiconductor DP83861 datasheet
.%O http://www.national.com
.Re
.Sh HISTORY
The
.Nm
device driver first appeared in
.Ox 3.0 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Bill Paul Aq wpaul@bsdi.com .