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diff --git a/kernel/Documentation/networking/e100.txt b/kernel/Documentation/networking/e100.txt new file mode 100644 index 000000000..f862cf3af --- /dev/null +++ b/kernel/Documentation/networking/e100.txt @@ -0,0 +1,197 @@ +Linux* Base Driver for the Intel(R) PRO/100 Family of Adapters +============================================================== + +March 15, 2011 + +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 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.x.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.x.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. 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 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. The ethtool + version 1.6 or later is required for this functionality. + + The latest release of ethtool can be found from + http://ftp.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 www.cyberus.ca/~hadi/usenix-paper.tgz 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://support.intel.com + + 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 the supported +kernel with a supported adapter, email the specific information related to the +issue to e1000-devel@lists.sourceforge.net. + + +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 file COPYING 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. |