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 April 8, 2025 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 supports the Realtek USB Ethernet Controller family. 57.Pp 58The 59.Nm 60driver supports the following media types: 61.Bl -tag -width "10baseT/UTP" 62.It Cm autoselect 63Enable auto selection of the media type and options. 64The user can manually override 65the auto selected mode by adding media options to the 66.Pa /etc/rc.conf 67file. 68.It Cm 10baseT/UTP 69Set 10Mbps operation. 70The 71.Cm mediaopt 72option can also be used to select either 73.Cm full-duplex 74or 75.Cm half-duplex 76modes. 77.It Cm 100baseTX 78Set 100Mbps (Fast Ethernet) 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 1000baseTX 87Set 1000baseTX (Gigabit Ethernet) operation over twisted pair. 88The Realtek gigE chips support 1000Mbps in 89.Cm full-duplex 90mode only. 91.It Cm 2500base-T 92Set 2500Base-T operation over twisted pair. 93The Realtek 8156/8156B chips support 2500Mbps in 94.Cm full-duplex 95mode only. 96.El 97.Pp 98The 99.Nm 100driver supports the following media options for 10/100 operation: 101.Bl -tag -width "full-duplex" 102.It Cm full-duplex 103Force full-duplex operation. 104.It Cm half-duplex 105Force half-duplex operation. 106.El 107.Pp 108For more information on configuring this device, see 109.Xr ifconfig 8 . 110.Sh HARDWARE 111The 112.Nm 113driver supports the following USB Ethernet controllers: 114.Bl -column "Realtek RTL8168/8169/8110/8211 via rgephy(4)" "10, 100, 1000, and 2500" 115.It Model: Ta Speed (Mbps): 116.It Realtek RTL8156/RTL8156B/RTL8156BG Ta 10, 100, 1000, and 2500 117.It Realtek RTL8153/RTL8153B Ta 10, 100, and 1000 118.It Realtek RTL8152 Ta 10 and 100 119.It Realtek RTL8168/8169/8110/8211 via rgephy(4) Ta 10, 100, and 1000 120.El 121.Sh DIAGNOSTICS 122.Bl -diag 123.It "ure%d: watchdog timeout" 124A packet was queued for transmission and a transmit command was 125issued, however the device failed to acknowledge the transmission 126before a timeout expired. 127.El 128.Sh SEE ALSO 129.Xr arp 4 , 130.Xr miibus 4 , 131.Xr netintro 4 , 132.Xr ng_ether 4 , 133.Xr ifconfig 8 134.Sh AUTHORS 135The 136.Nm 137driver was written by 138.An Kevin Lo Aq Mt kevlo@FreeBSD.org . 139