188 lines
6.1 KiB
ReStructuredText
188 lines
6.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
|
|
|
|
Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters
|
|
==============================================================
|
|
|
|
June 1, 2018
|
|
|
|
Contents
|
|
========
|
|
|
|
- In This Release
|
|
- Identifying Your Adapter
|
|
- Building and Installation
|
|
- Driver Configuration Parameters
|
|
- Additional Configurations
|
|
- Known Issues
|
|
- Support
|
|
|
|
|
|
In This Release
|
|
===============
|
|
|
|
This file describes the Linux* Base Driver for the Intel(R) PRO/100 Family of
|
|
Adapters. This driver includes support for Itanium(R)2-based systems.
|
|
|
|
For questions related to hardware requirements, refer to the documentation
|
|
supplied with your Intel PRO/100 adapter.
|
|
|
|
The following features are now available in supported kernels:
|
|
- Native VLANs
|
|
- Channel Bonding (teaming)
|
|
- SNMP
|
|
|
|
Channel Bonding documentation can be found in the Linux kernel source:
|
|
/Documentation/networking/bonding.txt
|
|
|
|
|
|
Identifying Your Adapter
|
|
========================
|
|
|
|
For information on how to identify your adapter, and for the latest Intel
|
|
network drivers, refer to the Intel Support website:
|
|
http://www.intel.com/support
|
|
|
|
Driver Configuration Parameters
|
|
===============================
|
|
|
|
The default value for each parameter is generally the recommended setting,
|
|
unless otherwise noted.
|
|
|
|
Rx Descriptors:
|
|
Number of receive descriptors. A receive descriptor is a data
|
|
structure that describes a receive buffer and its attributes to the network
|
|
controller. The data in the descriptor is used by the controller to write
|
|
data from the controller to host memory. In the 3.x.x driver the valid range
|
|
for this parameter is 64-256. The default value is 256. This parameter can be
|
|
changed using the command::
|
|
|
|
ethtool -G eth? rx n
|
|
|
|
Where n is the number of desired Rx descriptors.
|
|
|
|
Tx Descriptors:
|
|
Number of transmit descriptors. A transmit descriptor is a data
|
|
structure that describes a transmit buffer and its attributes to the network
|
|
controller. The data in the descriptor is used by the controller to read
|
|
data from the host memory to the controller. In the 3.x.x driver the valid
|
|
range for this parameter is 64-256. The default value is 128. This parameter
|
|
can be changed using the command::
|
|
|
|
ethtool -G eth? tx n
|
|
|
|
Where n is the number of desired Tx descriptors.
|
|
|
|
Speed/Duplex:
|
|
The driver auto-negotiates the link speed and duplex settings by
|
|
default. The ethtool utility can be used as follows to force speed/duplex.::
|
|
|
|
ethtool -s eth? autoneg off speed {10|100} duplex {full|half}
|
|
|
|
NOTE: setting the speed/duplex to incorrect values will cause the link to
|
|
fail.
|
|
|
|
Event Log Message Level:
|
|
The driver uses the message level flag to log events
|
|
to syslog. The message level can be set at driver load time. It can also be
|
|
set using the command::
|
|
|
|
ethtool -s eth? msglvl n
|
|
|
|
|
|
Additional Configurations
|
|
=========================
|
|
|
|
Configuring the Driver on Different Distributions
|
|
-------------------------------------------------
|
|
|
|
Configuring a network driver to load properly when the system is started
|
|
is distribution dependent. Typically, the configuration process involves
|
|
adding an alias line to `/etc/modprobe.d/*.conf` as well as editing other
|
|
system startup scripts and/or configuration files. Many popular Linux
|
|
distributions ship with tools to make these changes for you. To learn
|
|
the proper way to configure a network device for your system, refer to
|
|
your distribution documentation. If during this process you are asked
|
|
for the driver or module name, the name for the Linux Base Driver for
|
|
the Intel PRO/100 Family of Adapters is e100.
|
|
|
|
As an example, if you install the e100 driver for two PRO/100 adapters
|
|
(eth0 and eth1), add the following to a configuration file in
|
|
/etc/modprobe.d/::
|
|
|
|
alias eth0 e100
|
|
alias eth1 e100
|
|
|
|
Viewing Link Messages
|
|
---------------------
|
|
|
|
In order to see link messages and other Intel driver information on your
|
|
console, you must set the dmesg level up to six. This can be done by
|
|
entering the following on the command line before loading the e100
|
|
driver::
|
|
|
|
dmesg -n 6
|
|
|
|
If you wish to see all messages issued by the driver, including debug
|
|
messages, set the dmesg level to eight.
|
|
|
|
NOTE: This setting is not saved across reboots.
|
|
|
|
ethtool
|
|
-------
|
|
|
|
The driver utilizes the ethtool interface for driver configuration and
|
|
diagnostics, as well as displaying statistical information. The ethtool
|
|
version 1.6 or later is required for this functionality.
|
|
|
|
The latest release of ethtool can be found from
|
|
https://www.kernel.org/pub/software/network/ethtool/
|
|
|
|
Enabling Wake on LAN* (WoL)
|
|
---------------------------
|
|
WoL is provided through the ethtool* utility. For instructions on
|
|
enabling WoL with ethtool, refer to the ethtool man page. WoL will be
|
|
enabled on the system during the next shut down or reboot. For this
|
|
driver version, in order to enable WoL, the e100 driver must be loaded
|
|
when shutting down or rebooting the system.
|
|
|
|
NAPI
|
|
----
|
|
|
|
NAPI (Rx polling mode) is supported in the e100 driver.
|
|
|
|
See https://wiki.linuxfoundation.org/networking/napi for more
|
|
information on NAPI.
|
|
|
|
Multiple Interfaces on Same Ethernet Broadcast Network
|
|
------------------------------------------------------
|
|
|
|
Due to the default ARP behavior on Linux, it is not possible to have one
|
|
system on two IP networks in the same Ethernet broadcast domain
|
|
(non-partitioned switch) behave as expected. All Ethernet interfaces
|
|
will respond to IP traffic for any IP address assigned to the system.
|
|
This results in unbalanced receive traffic.
|
|
|
|
If you have multiple interfaces in a server, either turn on ARP
|
|
filtering by
|
|
|
|
(1) entering::
|
|
|
|
echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
|
|
|
|
(this only works if your kernel's version is higher than 2.4.5), or
|
|
|
|
(2) installing the interfaces in separate broadcast domains (either
|
|
in different switches or in a switch partitioned to VLANs).
|
|
|
|
|
|
Support
|
|
=======
|
|
For general information, go to the Intel support website at:
|
|
http://www.intel.com/support/
|
|
|
|
or the Intel Wired Networking project hosted by Sourceforge at:
|
|
http://sourceforge.net/projects/e1000
|
|
If an issue is identified with the released source code on a supported kernel
|
|
with a supported adapter, email the specific information related to the issue
|
|
to e1000-devel@lists.sf.net.
|