1.\" $OpenBSD: re.4,v 1.56 2022/02/18 10:24:32 jsg Exp $ 2.\" Copyright (c) 2003 3.\" Bill Paul <wpaul@windriver.com>. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. All advertising materials mentioning features or use of this software 14.\" must display the following acknowledgement: 15.\" This product includes software developed by Bill Paul. 16.\" 4. Neither the name of the author nor the names of any co-contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30.\" THE POSSIBILITY OF SUCH DAMAGE. 31.\" 32.\" $FreeBSD: /repoman/r/ncvs/src/share/man/man4/re.4,v 1.4 2004/03/04 06:42:46 sanpei Exp $ 33.\" 34.Dd $Mdocdate: February 18 2022 $ 35.Dt RE 4 36.Os 37.Sh NAME 38.Nm re 39.Nd Realtek 8139C+/8169/816xS/811xS/8168/810xE 10/100/1Gb Ethernet device 40.Sh SYNOPSIS 41.Cd "re* at pci?" 42.Cd "re* at cardbus?" 43.Cd "eephy* at mii?" 44.Cd "rgephy* at mii?" 45.Cd "rlphy* at mii?" 46.Sh DESCRIPTION 47The 48.Nm 49driver provides support for various NICs based on the 50Realtek RTL8139C+, RTL8169, RTL816xS, RTL811xS, RTL8168 and 51RTL810xE PCI and PCI Express Ethernet controllers, 52including the following: 53.Pp 54.Bl -bullet -compact 55.It 56Alloy Computer Products EtherGOLD 1439E 10/100 (8139C+) 57.It 58Buffalo LGY-PCI-GT (8169S) 59.It 60Compaq Evo N1015v Integrated Ethernet (8139C+) 61.It 62Corega CG-LAPCIGT (8169S) 63.It 64D-Link DGE-528T (8169S) 65.It 66D-Link DGE-530T C1 (8169/8110SB) 67.It 68D-Link DGE-660TD (8169/8110SB) 69.It 70Gigabyte 7N400 Pro2 Integrated Gigabit Ethernet (8110S) 71.It 72LevelOne GNC-0105T (8169S) 73.It 74Linksys EG1032v3 (8169S) 75.It 76Netgear GA311 (8169S) 77.It 78Netgear GA511 PC Card (8169) 79.It 80PLANEX COMMUNICATIONS Inc. GN-1200TC (8169S) 81.It 82Surecom EP-320G-TX1 (8169S) 83.It 84TTTech MC322 (8139C+) 85.It 86US Robotics USR997902 (8169S) 87.It 88Xterasys XN-152 10/100/1000 NIC (8169) 89.El 90.Pp 91NICs based on the 8139C+ and 810xE are capable of 10 and 100Mbps speeds 92over CAT5 cable. 93NICs based on the 8169, 816xS, 811xS and 8168 are capable of 10, 100 and 941000Mbps operation. 95.Pp 96All 97.Nm 98NICs support 99IPv4 transmit/receive IP/TCP/UDP checksum offload, VLAN tag insertion and 100stripping, and use a descriptor-based DMA mechanism. 101The 8102E(L), 8103E(L), 8168C/8111C, 8168D/8111D, 8168DP/8111DP and 1028168E/8111E chips also support IPv6 receive TCP/UDP checksum offload. 103.Pp 104The 8139C+ is a single-chip solution combining both a 10/100 MAC and PHY. 105The 8169 is a 10/100/1000 MAC only, requiring a GMII or TBI external PHY. 106The 8169S, 8110S, 8111B and 8168 are single-chip devices 107containing both a 10/100/1000 MAC and 10/100/1000 copper PHY. 108Standalone 10/100/1000 cards are available in both 32-bit PCI and 64-bit 109PCI models. 110The 8110S and 8111B are designed for embedded LAN-on-motherboard applications. 111.Pp 112The 8168, 8169, 8169S and 8110S also support jumbo frames. 113.Pp 114The 115.Nm 116driver additionally supports Wake on LAN (WoL). 117See 118.Xr arp 8 119and 120.Xr ifconfig 8 121for more details. 122.Pp 123The 124.Nm 125driver supports the following media types: 126.Bl -tag -width 10baseTXUTP 127.It autoselect 128Enable autoselection of the media type and options. 129The user can manually override the autoselected mode by adding media options 130to the appropriate 131.Xr hostname.if 5 132file. 133.It 10baseT/UTP 134Set 10Mbps operation. 135The 136.Xr ifconfig 8 137.Ic mediaopt 138option can also be used to select either 139.Ar full-duplex 140or 141.Ar half-duplex 142modes. 143.It 100baseTX 144Set 100Mbps (Fast Ethernet) operation. 145The 146.Xr ifconfig 8 147.Ic mediaopt 148option can also be used to select either 149.Ar full-duplex 150or 151.Ar half-duplex 152modes. 153.It 1000baseT 154Set 1000baseT operation over twisted pair. 155The Realtek GigE chips support 1000Mbps in 156.Ar full-duplex 157mode only. 158.\" .It 1000baseSX 159.\" Set 1000Mbps (Gigabit Ethernet) operation. 160.\" Both 161.\" .Ar full-duplex 162.\" and 163.\" .Ar half-duplex 164.\" modes are supported. 165.El 166.Pp 167The 168.Nm 169driver supports the following media options: 170.Bl -tag -width full-duplex 171.It full-duplex 172Force full duplex operation. 173.It half-duplex 174Force half duplex operation. 175.El 176.Pp 177For more information on configuring this device, see 178.Xr ifconfig 8 . 179.Sh SEE ALSO 180.Xr arp 4 , 181.Xr eephy 4 , 182.Xr ifmedia 4 , 183.Xr intro 4 , 184.Xr netintro 4 , 185.Xr pci 4 , 186.Xr rgephy 4 , 187.Xr rlphy 4 , 188.Xr hostname.if 5 , 189.Xr ifconfig 8 190.Rs 191.%T Realtek Semiconductor RTL8139C+, RTL8169, RTL8169S and RTL8110S datasheets 192.%U https://www.realtek.com/en 193.Re 194.Sh HISTORY 195The 196.Nm 197device driver first appeared in 198.Ox 3.6 . 199.Sh AUTHORS 200.An -nosplit 201The 202.Nm 203driver was written by 204.An Bill Paul Aq Mt wpaul@windriver.com 205and ported to 206.Ox 207by 208.An Peter Valchev Aq Mt pvalchev@openbsd.org . 209.Sh BUGS 210The Xterasys XN-152 32-bit PCI NIC, which uses the RTL8169 MAC and 211Marvell 88E1000 PHY, has a defect that causes DMA corruption 212if the board is plugged into a 64-bit PCI slot. 213The defect lies in the board design, not the chip itself: the PCI REQ64# 214and ACK64# lines should be pulled high, but they are not. 215The result is that the 8169 chip is tricked into performing 64-bit DMA 216transfers even though a 64-bit data path between the NIC and the bus does 217not actually exist. 218.Pp 219Unfortunately, it is not possible to correct this problem in software. 220The user should ensure the NIC is installed in a 32-bit PCI slot to avoid 221this problem. 222