Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters ============================================================== November 17, 2004 Contents ======== - In This Release - Identifying Your Adapter - Driver Configuration Parameters - Additional Configurations - Support In This Release =============== This file describes the Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters, version 3.3.x. This driver supports 2.4.x and 2.6.x kernels. Identifying Your Adapter ======================== For more information on how to identify your adapter, go to the Adapter & Driver ID Guide at: http://support.intel.com/support/network/adapter/pro100/21397.htm For the latest Intel network drivers for Linux, refer to the following website. In the search field, enter your adapter name or type, or use the networking link on the left to search for your adapter: http://downloadfinder.intel.com/scripts-df/support_intel.asp 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 3.0.x driver the valid range for this parameter is 64-256. The default value is 64. 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 3.0.x driver the valid range for this parameter is 64-256. The default value is 64. 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. Ethtool 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/modules.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 modules.conf: 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 8 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. Ethtool version 1.6 or later is required for this functionality. The latest release of ethtool can be found at: http://sf.net/projects/gkernel. NOTE: This driver uses mii support from the kernel. As a result, when there is no link, ethtool will report speed/duplex to be 10/half. NOTE: Ethtool 1.6 only supports a limited set of ethtool options. Support for a more complete ethtool feature set can be enabled by upgrading ethtool to ethtool-1.8.1. Enabling Wake on LAN* (WoL) --------------------------- WoL is provided through the Ethtool* utility. Ethtool is included with Red Hat* 8.0. For other Linux distributions, download and install Ethtool from the following website: http://sourceforge.net/projects/gkernel. 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 www.cyberus.ca/~hadi/usenix-paper.tgz for more information on NAPI. Support ======= For general information, go to the Intel support website at: http://support.intel.com If an issue is identified with the released source code on the supported kernel with a supported adapter, email the specific information related to the issue to linux.nics@intel.com. License ======= This software program is released under the terms of a license agreement between you ('Licensee') and Intel. Do not use or load this software or any associated materials (collectively, the 'Software') until you have carefully read the full terms and conditions of the LICENSE located in this software package. By loading or using the Software, you agree to the terms of this Agreement. If you do not agree with the terms of this Agreement, do not install or use the Software. * Other names and brands may be claimed as the property of others.