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Recent patch updated e100 docs to rst format. Docs build (`make
htmldocs`) is currently failing due to this file with error:
(SEVERE/4) Unexpected section title.
This is because a section of the file is indented 2 spaces. Build error
can be cleared by aligning the text with column 0. While we are changing
these lines we can make sure line length does not exceed 72, that
newlines following headings are uniform, and that full stops are
followed by two spaces.
Align text with column 0, limit line length to 72, ensure two spaces
follow all full stops, ensure uniform use of newlines after heading.
Fixes commit (85d63445f4 Documentation: e100: Update the Intel 10/100 driver doc)
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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6.1 KiB
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180 lines
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==============================================================
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Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters
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==============================================================
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June 1, 2018
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Contents
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========
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- In This Release
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- Identifying Your Adapter
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- Building and Installation
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- Driver Configuration Parameters
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- Additional Configurations
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- Known Issues
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- Support
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In This Release
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===============
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This file describes the Linux* Base Driver for the Intel(R) PRO/100 Family of
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Adapters. This driver includes support for Itanium(R)2-based systems.
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For questions related to hardware requirements, refer to the documentation
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supplied with your Intel PRO/100 adapter.
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The following features are now available in supported kernels:
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- Native VLANs
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- Channel Bonding (teaming)
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- SNMP
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Channel Bonding documentation can be found in the Linux kernel source:
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/Documentation/networking/bonding.txt
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Identifying Your Adapter
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========================
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For information on how to identify your adapter, and for the latest Intel
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network drivers, refer to the Intel Support website:
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http://www.intel.com/support
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Driver Configuration Parameters
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===============================
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The default value for each parameter is generally the recommended setting,
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unless otherwise noted.
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Rx Descriptors: Number of receive descriptors. A receive descriptor is a data
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structure that describes a receive buffer and its attributes to the network
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controller. The data in the descriptor is used by the controller to write
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data from the controller to host memory. In the 3.x.x driver the valid range
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for this parameter is 64-256. The default value is 256. This parameter can be
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changed using the command::
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ethtool -G eth? rx n
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Where n is the number of desired Rx descriptors.
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Tx Descriptors: Number of transmit descriptors. A transmit descriptor is a data
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structure that describes a transmit buffer and its attributes to the network
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controller. The data in the descriptor is used by the controller to read
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data from the host memory to the controller. In the 3.x.x driver the valid
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range for this parameter is 64-256. The default value is 128. This parameter
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can be changed using the command::
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ethtool -G eth? tx n
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Where n is the number of desired Tx descriptors.
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Speed/Duplex: The driver auto-negotiates the link speed and duplex settings by
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default. The ethtool utility can be used as follows to force speed/duplex.::
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ethtool -s eth? autoneg off speed {10|100} duplex {full|half}
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NOTE: setting the speed/duplex to incorrect values will cause the link to
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fail.
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Event Log Message Level: The driver uses the message level flag to log events
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to syslog. The message level can be set at driver load time. It can also be
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set using the command::
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ethtool -s eth? msglvl n
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Additional Configurations
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=========================
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Configuring the Driver on Different Distributions
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-------------------------------------------------
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Configuring a network driver to load properly when the system is started
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is distribution dependent. Typically, the configuration process involves
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adding an alias line to /etc/modprobe.d/*.conf as well as editing other
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system startup scripts and/or configuration files. Many popular Linux
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distributions ship with tools to make these changes for you. To learn
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the proper way to configure a network device for your system, refer to
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your distribution documentation. If during this process you are asked
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for the driver or module name, the name for the Linux Base Driver for
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the Intel PRO/100 Family of Adapters is e100.
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As an example, if you install the e100 driver for two PRO/100 adapters
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(eth0 and eth1), add the following to a configuration file in
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/etc/modprobe.d/::
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alias eth0 e100
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alias eth1 e100
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Viewing Link Messages
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---------------------
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In order to see link messages and other Intel driver information on your
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console, you must set the dmesg level up to six. This can be done by
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entering the following on the command line before loading the e100
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driver::
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dmesg -n 6
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If you wish to see all messages issued by the driver, including debug
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messages, set the dmesg level to eight.
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NOTE: This setting is not saved across reboots.
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ethtool
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-------
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The driver utilizes the ethtool interface for driver configuration and
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diagnostics, as well as displaying statistical information. The ethtool
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version 1.6 or later is required for this functionality.
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The latest release of ethtool can be found from
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https://www.kernel.org/pub/software/network/ethtool/
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Enabling Wake on LAN* (WoL)
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---------------------------
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WoL is provided through the ethtool* utility. For instructions on
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enabling WoL with ethtool, refer to the ethtool man page. WoL will be
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enabled on the system during the next shut down or reboot. For this
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driver version, in order to enable WoL, the e100 driver must be loaded
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when shutting down or rebooting the system.
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NAPI
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----
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NAPI (Rx polling mode) is supported in the e100 driver.
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See https://wiki.linuxfoundation.org/networking/napi for more
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information on NAPI.
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Multiple Interfaces on Same Ethernet Broadcast Network
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------------------------------------------------------
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Due to the default ARP behavior on Linux, it is not possible to have one
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system on two IP networks in the same Ethernet broadcast domain
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(non-partitioned switch) behave as expected. All Ethernet interfaces
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will respond to IP traffic for any IP address assigned to the system.
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This results in unbalanced receive traffic.
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If you have multiple interfaces in a server, either turn on ARP
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filtering by
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(1) entering:: echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
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(this only works if your kernel's version is higher than 2.4.5), or
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(2) installing the interfaces in separate broadcast domains (either
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in different switches or in a switch partitioned to VLANs).
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Support
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=======
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For general information, go to the Intel support website at:
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http://www.intel.com/support/
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or the Intel Wired Networking project hosted by Sourceforge at:
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http://sourceforge.net/projects/e1000
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If an issue is identified with the released source code on a supported kernel
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with a supported adapter, email the specific information related to the issue
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to e1000-devel@lists.sf.net.
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