1.\" Copyright (c) 2008 Pyun YongHyeon 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD: src/share/man/man4/ale.4,v 1.2 2008/11/29 18:09:50 brueffer Exp $ 26.\" 27.Dd December 31, 2008 28.Dt ALE 4 29.Os 30.Sh NAME 31.Nm ale 32.Nd Atheros AR8121/AR8113/AR8114 Gigabit/Fast Ethernet driver 33.Sh SYNOPSIS 34To compile this driver into the kernel, 35place the following lines in your 36kernel configuration file: 37.Bd -ragged -offset indent 38.Cd "device miibus" 39.Cd "device ale" 40.Ed 41.Pp 42Alternatively, to load the driver as a 43module at boot time, place the following line in 44.Xr loader.conf 5 : 45.Bd -literal -offset indent 46if_ale_load="YES" 47.Ed 48.Sh DESCRIPTION 49The 50.Nm 51device driver provides support for Atheros AR8121 PCI Express 52Gigabit Ethernet controllers and Atheros AR8113/AR8114 PCI 53Express Fast Ethernet controllers. 54.Pp 55All LOMs supported by the 56.Nm 57driver have TCP/UDP/IP checksum offload for both receive and transmit, 58hardware VLAN tag stripping/insertion features and 59an interrupt coalescing/moderation 60mechanism as well as a 64-bit multicast hash filter. 61.Pp 62The AR8121 also supports Jumbo Frames (up to 8132 bytes), 63which can be configured via the interface MTU setting. 64Selecting an MTU larger than 1500 bytes with the 65.Xr ifconfig 8 66utility configures the adapter to receive and transmit Jumbo Frames. 67.Pp 68The 69.Nm 70driver supports the following media types: 71.Bl -tag -width ".Cm 10baseT/UTP" 72.It Cm autoselect 73Enable autoselection of the media type and options. 74The user can manually override 75the autoselected mode by adding media options to 76.Xr rc.conf 5 . 77.It Cm 10baseT/UTP 78Set 10Mbps operation. 79.It Cm 100baseTX 80Set 100Mbps (Fast Ethernet) operation. 81.It Cm 1000baseT 82Set 1000baseT operation over twisted pair. 83.El 84.Pp 85The 86.Nm 87driver supports the following media options: 88.Bl -tag -width ".Cm full-duplex" 89.It Cm full-duplex 90Force full duplex operation. 91.It Cm half-duplex 92Force half duplex operation. 93.El 94.Pp 95For more information on configuring this device, see 96.Xr ifconfig 8 . 97.Sh HARDWARE 98The 99.Nm 100device driver provides support for the following Ethernet controllers: 101.Pp 102.Bl -bullet -compact 103.It 104Atheros AR8113 PCI Express Fast Ethernet controller 105.It 106Atheros AR8114 PCI Express Fast Ethernet controller 107.It 108Atheros AR8121 PCI Express Gigabit Ethernet controller 109.El 110.Sh SYSCTL VARIABLES 111The following variables are available as both 112.Xr sysctl 8 113variables and 114.Xr loader 8 115tunables: 116.Bl -tag -width "xxxxxx" 117.It Va dev.ale%d.int_rx_mod 118Maximum amount of time to delay receive interrupt processing in 119units of 1us. 120The accepted range is 0 to 130000, the default is 30(30us). 121Value 0 completely disables the interrupt moderation. 122.It Va dev.ale%d.int_tx_mod 123Maximum amount of time to delay transmit interrupt processing in 124units of 1us. 125The accepted range is 0 to 130000, the default is 1000(1ms). 126Value 0 completely disables the interrupt moderation. 127.El 128.Sh SEE ALSO 129.Xr altq 4 , 130.Xr arp 4 , 131.Xr ifmedia 4 , 132.Xr miibus 4 , 133.Xr netintro 4 , 134.Xr ng_ether 4 , 135.Xr vlan 4 , 136.Xr ifconfig 8 137.Sh HISTORY 138The 139.Nm 140driver was written by 141.An Pyun YongHyeon 142.Aq yongari@FreeBSD.org . 143It first appeared in 144.Fx 7.1 . 145