44c81fb8b3
implemented yet. While here, fix a whitespace nit. Discussed with: delphij
181 lines
4.9 KiB
Groff
181 lines
4.9 KiB
Groff
.\"
|
|
.\" Copyright (c) 2007 The DragonFly Project. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\"
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in
|
|
.\" the documentation and/or other materials provided with the
|
|
.\" distribution.
|
|
.\" 3. Neither the name of The DragonFly Project nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived
|
|
.\" from this software without specific, prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd July 14, 2008
|
|
.Dt ET 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm et
|
|
.Nd "Agere ET1310 10/100/Gigabit Ethernet driver"
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device miibus"
|
|
.Cd "device et"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
if_et_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver supports PCI Express Ethernet adapters based on the Agere ET1310 chip.
|
|
.\".Pp
|
|
.\"Support for Jumbo Frames is provided via the interface MTU setting.
|
|
.\"Selecting an MTU larger than 1500 bytes with the
|
|
.\".Xr ifconfig 8
|
|
.\"utility configures the adapter to receive and transmit Jumbo Frames.
|
|
.\"The maximum MTU setting for Jumbo Frames is 15572.
|
|
.\"This value coincides with the maximum Jumbo Frames size of 15594.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media types:
|
|
.Pp
|
|
.Bl -tag -width 10baseT/UTP -compact
|
|
.It autoselect
|
|
Enable autoselection of the media types and options.
|
|
The user can manually override
|
|
the autoselected mode by adding media options to the
|
|
.Pa /etc/rc.conf
|
|
file.
|
|
.Pp
|
|
.It 10baseT/UTP
|
|
Set 10Mbps operation.
|
|
The
|
|
.Ar mediaopt
|
|
option can also be used to select either
|
|
.Ar full-duplex
|
|
or
|
|
.Ar half-duplex
|
|
modes.
|
|
.Pp
|
|
.It 100baseTX
|
|
Set 100Mbps (Fast Ethernet) operation.
|
|
The
|
|
.Ar mediaopt
|
|
option can also be used to select either
|
|
.Ar full-duplex
|
|
or
|
|
.Ar half-duplex
|
|
modes.
|
|
.Pp
|
|
.It 1000baseT
|
|
Set 1000Mbps (Gigabit Ethernet) operation.
|
|
The
|
|
.Ar mediaopt
|
|
option can only be set to
|
|
.Ar full-duplex
|
|
mode.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following
|
|
.Ar media
|
|
options:
|
|
.Pp
|
|
.Bl -tag -width full-duplex -compact
|
|
.It full-duplex
|
|
Force full-duplex operation.
|
|
.Pp
|
|
.It half-duplex
|
|
Force half-duplex operation.
|
|
.El
|
|
.Pp
|
|
Note that the 1000baseT media type is only available
|
|
if it is supported by the adapter.
|
|
For more information on configuring this device, see
|
|
.Xr ifconfig 8 .
|
|
.Sh TUNABLES
|
|
.Bl -tag -width ".Va hw.et.rx_intr_npkts"
|
|
.It Va hw.et.rx_intr_npkts
|
|
This value controls how many packets should be received
|
|
before a receive interrupt is generated.
|
|
The default value is 32.
|
|
It is recommended to set this value above 38 to prevent the host from being
|
|
livelocked under a high degree of stress.
|
|
.It Va hw.et.rx_intr_delay
|
|
This value delays the generation of receive interrupts
|
|
in units of ~4 microseconds.
|
|
It is used together with
|
|
.Va hw.et.rx_intr_npkts
|
|
to achieve RX interrupt moderation.
|
|
The default value is 20.
|
|
.It Va hw.et.tx_intr_nsegs
|
|
This value controls how many segments (not packets) should be transmitted
|
|
before a transmit interrupt is generated.
|
|
The default value is 126.
|
|
It is recommended to set this value below 280 to prevent
|
|
the TX ring from underflowing.
|
|
.It Va hw.et.timer
|
|
This value controls how often a timer interrupt should be generated.
|
|
It is used together with
|
|
.Va hw.et.tx_intr_nsegs
|
|
to achieve TX interrupt moderation.
|
|
The default value is 1000000000 (nanoseconds).
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr arp 4 ,
|
|
.Xr miibus 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr vlan 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
device driver first appeared in
|
|
.Dx 1.11 .
|
|
The first
|
|
.Fx
|
|
release to include it was
|
|
.Fx 8.0 .
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Sepherosa Ziehau Aq sepherosa@gmail.com
|
|
for
|
|
.Dx .
|
|
It was ported to
|
|
.Fx
|
|
by
|
|
.An Xin LI Aq delphij@FreeBSD.org .
|