1.\"- 2.\" SPDX-License-Identifier: BSD-2-Clause 3.\" 4.\" Copyright (c) 2015-2016 Kevin Lo <kevlo@FreeBSD.org> 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.Dd September 3, 2024 29.Dt URE 4 30.Os 31.Sh NAME 32.Nm ure 33.Nd RealTek RTL8152/RTL8153/RTL8156 USB Ethernet driver 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device uhci" 40.Cd "device ohci" 41.Cd "device usb" 42.Cd "device miibus" 43.Cd "device uether" 44.Cd "device ure" 45.Ed 46.Pp 47Alternatively, to load the driver as a 48module at boot time, place the following line in 49.Xr loader.conf 5 : 50.Bd -literal -offset indent 51if_ure_load="YES" 52.Ed 53.Sh DESCRIPTION 54The 55.Nm 56driver provides support for USB Ethernet adapters based on the RealTek 57RTL8152, RTL8153/RTL8153B, and RTL8156/RTL8156B USB Ethernet controllers, 58as well as USB Ethernet PHYs provided by 59.Xr rgephy 4 . 60.Pp 61NICs based on the RTL8152 are capable of 10 and 100Mbps. 62NICs based on the RTL8153 or provided by 63.Xr rgephy 4 64are capable of 10, 100, and 1000Mbps. 65NICs based on the RTL8156 are capable of 10, 100, 1000, and 2500Mbps operation. 66.Pp 67The 68.Nm 69driver supports the following media types: 70.Bl -tag -width "10baseT/UTP" 71.It Cm autoselect 72Enable auto selection of the media type and options. 73The user can manually override 74the auto selected mode by adding media options to the 75.Pa /etc/rc.conf 76file. 77.It Cm 10baseT/UTP 78Set 10Mbps operation. 79The 80.Cm mediaopt 81option can also be used to select either 82.Cm full-duplex 83or 84.Cm half-duplex 85modes. 86.It Cm 100baseTX 87Set 100Mbps (Fast Ethernet) operation. 88The 89.Cm mediaopt 90option can also be used to select either 91.Cm full-duplex 92or 93.Cm half-duplex 94modes. 95.It Cm 1000baseTX 96Set 1000baseTX (Gigabit Ethernet) operation over twisted pair. 97The RealTek gigE chips support 1000Mbps in 98.Cm full-duplex 99mode only. 100.It Cm 2500base-T 101Set 2500Base-T operation over twisted pair. 102The RealTek 8156/8156B chips support 2500Mbps in 103.Cm full-duplex 104mode only. 105.El 106.Pp 107The 108.Nm 109driver supports the following media options for 10/100 operation: 110.Bl -tag -width "full-duplex" 111.It Cm full-duplex 112Force full-duplex operation. 113.It Cm half-duplex 114Force half-duplex operation. 115.El 116.Pp 117For more information on configuring this device, see 118.Xr ifconfig 8 . 119.Sh DIAGNOSTICS 120.Bl -diag 121.It "ure%d: watchdog timeout" 122A packet was queued for transmission and a transmit command was 123issued, however the device failed to acknowledge the transmission 124before a timeout expired. 125.El 126.Sh SEE ALSO 127.Xr arp 4 , 128.Xr miibus 4 , 129.Xr netintro 4 , 130.Xr ng_ether 4 , 131.Xr ifconfig 8 132.Sh AUTHORS 133The 134.Nm 135driver was written by 136.An Kevin Lo Aq Mt kevlo@FreeBSD.org . 137