152 lines
4.6 KiB
Groff
152 lines
4.6 KiB
Groff
.\" Copyright (c) 2008 Stanislav Sedov <stas@FreeBSD.org>
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 October 4, 2008
|
|
.Dt AE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ae
|
|
.Nd "Attansic/Atheros L2 FastEthernet controller 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 ae"
|
|
.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_ae_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
device driver provides support for Attansic/Atheros L2 PCIe FastEthernet
|
|
controllers.
|
|
.Pp
|
|
The controller supports hardware Ethernet checksum processing, hardware
|
|
VLAN tag stripping/insertion and an interrupt moderation mechanism.
|
|
Attansic L2 also features a 64-bit multicast hash filter.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver supports the following media types:
|
|
.Bl -tag -width ".Cm 10baseT/UTP"
|
|
.It Cm autoselect
|
|
Enable autoselection of the media type and options.
|
|
The user can manually override the autoselected mode by
|
|
adding media options to
|
|
.Xr rc.conf 5 .
|
|
.It Cm 10baseT/UTP
|
|
Select 10Mbps operation.
|
|
.It Cm 100baseTX
|
|
Set 100Mbps (FastEthernet) operation.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver provides support for the following media options:
|
|
.Bl -tag -width ".Cm full-duplex"
|
|
.It Cm full-duplex
|
|
Force full duplex operation.
|
|
.It Cm half-duplex
|
|
Force half duplex operation.
|
|
.El
|
|
.Pp
|
|
For more information on configuring this device, see
|
|
.Xr ifconfig 8 .
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports Attansic/Atheros L2 PCIe FastEthernet controllers, and
|
|
is known to support the following hardware:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
ASUS EeePC 701
|
|
.It
|
|
ASUS EeePC 900
|
|
.El
|
|
.Pp
|
|
Other hardware may or may not work with this driver.
|
|
.Sh LOADER TUNABLES
|
|
Tunables can be set at the
|
|
.Xr loader 8
|
|
prompt before booting the kernel or stored in
|
|
.Xr loader.conf 5 .
|
|
.Bl -tag -width "xxxxxx"
|
|
.It Va hw.ae.msi_disable
|
|
This tunable disables MSI support on the Ethernet hardware.
|
|
The default value is 0.
|
|
.El
|
|
.Sh SYSCTL VARIABLES
|
|
The
|
|
.Nm
|
|
driver collects a number of useful MAC counter during the work.
|
|
The statistics is available via the
|
|
.Va dev.ae.%d.stats
|
|
.Xr sysctl 8
|
|
tree, where %d corresponds to the controller number.
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "ae%d: watchdog timeout."
|
|
The device has stopped responding to the network, or there is a problem with
|
|
the network connection (cable).
|
|
.It "ae%d: reset timeout."
|
|
The card reset operation has been timed out.
|
|
.It "ae%d: Generating random ethernet address."
|
|
No valid Ethernet address was found in the controller NVRAM and registers.
|
|
Random locally administered address with ASUS OUI identifier will be used
|
|
instead.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr altq 4 ,
|
|
.Xr arp 4 ,
|
|
.Xr miibus 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr vlan 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver and this manual page was written by
|
|
.An Stanislav Sedov Aq Mt stas@FreeBSD.org .
|
|
It first appeared in
|
|
.Fx 7.1 .
|
|
.Sh BUGS
|
|
The Attansic L2 FastEthernet controller supports DMA but does not use a
|
|
descriptor based transfer mechanism via scatter-gather DMA.
|
|
Thus the data should be copied to/from the controller memory on each
|
|
transmit/receive.
|
|
Furthermore, a lot of data alignment restrictions apply.
|
|
This may introduce a high CPU load on systems with heavy network activity.
|
|
Luckily enough this should not be a problem on modern hardware as L2 does
|
|
not support speeds faster than 100Mbps.
|