2019-11-06 19:52:31 +00:00
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.\" Copyright (c) 2019 The FreeBSD Foundation.
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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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.\" 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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2021-09-28 20:27:28 +00:00
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.Dd September 28, 2021
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2019-11-06 19:52:31 +00:00
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.Dt MGB 4
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.Os
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.Sh NAME
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.Nm mgb
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.Nd "Microchip LAN743x PCIe Gigabit Ethernet driver"
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.Sh SYNOPSIS
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To load the driver as a module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_mgb_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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2021-09-28 20:27:28 +00:00
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driver is experimental, and has a number of caveats and limitations.
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It is currently available only as a kernel module.
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2020-09-24 14:42:22 +00:00
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.Pp
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The
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.Nm
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2019-11-06 19:52:31 +00:00
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device driver provides support for PCIe Gigabit Ethernet adapters based on
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Microchip's LAN7430 and LAN7431.
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.Pp
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For more information on configuring this device, see
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.Xr ifconfig 8 .
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.Sh HARDWARE
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The
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.Nm
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driver supports:
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.Pp
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.Bl -bullet -compact
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.It
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Microchip LAN7430 PCIe Gigabit Ethernet controller with PHY
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.It
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Microchip LAN7431 PCIe Gigabit Ethernet controller with RGMII interface
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.El
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr miibus 4 ,
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.Xr ifconfig 8
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.Sh CAVEATS
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The driver does not yet implement support for many hardware features,
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including:
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.Bl -bullet -compact
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.It
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Multiple RX queue support
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.It
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RX and TX checksum offload
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.It
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Hardware VLAN tagging or untagging
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.It
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Multicast receive packet filtering
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.It
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Wake on LAN (WoL)
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.It
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LSO
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.It
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RSS
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.El
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.Pp
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LAN7431 support is completely untested.
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