1.\" Copyright (c) 2019 The FreeBSD Foundation. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.\" $FreeBSD$ 25.\" 26.Dd May 2, 2019 27.Dt MGB 4 28.Os 29.Sh NAME 30.Nm mgb 31.Nd "Microchip LAN743x PCIe Gigabit Ethernet driver" 32.Sh SYNOPSIS 33To load the driver as a module at boot time, place the following line in 34.Xr loader.conf 5 : 35.Bd -literal -offset indent 36if_mgb_load="YES" 37.Ed 38.Sh DESCRIPTION 39The 40.Nm 41device driver provides support for PCIe Gigabit Ethernet adapters based on 42Microchip's LAN7430 and LAN7431. 43.Pp 44For more information on configuring this device, see 45.Xr ifconfig 8 . 46.Sh HARDWARE 47The 48.Nm 49driver supports: 50.Pp 51.Bl -bullet -compact 52.It 53Microchip LAN7430 PCIe Gigabit Ethernet controller with PHY 54.It 55Microchip LAN7431 PCIe Gigabit Ethernet controller with RGMII interface 56.El 57.Sh SEE ALSO 58.Xr arp 4 , 59.Xr miibus 4 , 60.Xr ifconfig 8 61.Sh CAVEATS 62The driver does not yet implement support for many hardware features, 63including: 64.Bl -bullet -compact 65.It 66Multiple RX queue support 67.It 68RX and TX checksum offload 69.It 70Hardware VLAN tagging or untagging 71.It 72Multicast receive packet filtering 73.It 74Wake on LAN (WoL) 75.It 76LSO 77.It 78RSS 79.El 80.Pp 81LAN7431 support is completely untested. 82.Sh HISTORY 83The 84.Nm 85device driver first appeared in 86.Fx 13.0 . 87