1.\" $NetBSD: txp.4,v 1.4 2003/08/23 22:39:32 wiz Exp $ 2.\" 3.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net) 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd August 21, 2003 28.Dt TXP 4 29.Os 30.Sh NAME 31.Nm txp 32.Nd 3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interface 33.Sh SYNOPSIS 34.Cd "txp* at pci? dev ? function ?" 35.Sh DESCRIPTION 36The 37.Nm 38interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the 39.Tn 3Com 40.Tn Typhoon/Sidewinder 41chipset. 42This driver supports the following cards: 43.Pp 44.Bl -bullet -offset indent -compact 45.It 463Com 3CR990-TX-95 47.It 483Com 3CR990-TX-97 49.It 503Com 3CR990SVR95 51.It 523Com 3CR990SVR97 53.El 54.Pp 55Basic Ethernet functions are provided as well as support for 56.Xr vlan 4 57tag removal and insertion assistance, 58receive 59.Xr ip 4 , 60.Xr tcp 4 , 61and 62.Xr udp 4 63checksum offloading, 64and 65transmit 66.Xr ip 4 67checksum offloading. 68There is currently no support for 69transmit 70.Xr tcp 4 71or 72.Xr udp 4 73checksum offloading, 74.Xr tcp 4 75segmentation, nor 76.Xr ipsec 4 77acceleration. 78Note that hardware checksumming is only used when the interface is not 79in 80.Xr bridge 4 81mode. 82.Pp 83Each of the host's network addresses 84is specified at boot time with an 85.Dv SIOCSIFADDR 86.Xr ioctl 2 . 87The 88.Nm 89interface employs the address resolution protocol described in 90.Xr arp 4 91to dynamically map between Internet and Ethernet addresses on the local 92network. 93.Pp 94When a 95.Nm 96interface is brought up, by default, it will attempt to auto-negotiate the 97link speed and duplex mode. 98The speeds, in order of attempt, are: 100Mb/s Full Duplex, 100Mb/s Half Duplex, 9910 Mb/s Full Duplex, and 10 Mb/s Half Duplex. 100.Pp 101The 102.Nm 103supports several media types, which are selected via the 104.Xr ifconfig 8 105command. 106The supported media types are: 107.Bl -tag -width xxxxxxxxxxxxxx -offset indent 108.It media autoselect 109Attempt to autoselect the media type (default) 110.It media 100baseTX mediaopt full-duplex 111Use 100baseTX, full duplex 112.It media 100baseTX Op mediaopt half-duplex 113Use 100baseTX, half duplex 114.It media 10baseT mediaopt full-duplex 115Use 10baseT, full duplex 116.It media 10baseT Op mediaopt half-duplex 117Use 10baseT, half duplex 118.El 119.Sh SEE ALSO 120.Xr arp 4 , 121.Xr ifmedia 4 , 122.Xr inet 4 , 123.Xr intro 4 , 124.Xr ip 4 , 125.Xr netintro 4 , 126.Xr pci 4 , 127.Xr tcp 4 , 128.Xr udp 4 , 129.Xr vlan 4 , 130.Xr ifconfig 8 131.Sh HISTORY 132The 133.Nm 134driver first appeared in 135.Nx 2.0 . 136