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Documentation/networking/igb.txt
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Linux* Base Driver for Intel(R) Ethernet Network Connection =========================================================== |
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Intel Gigabit Linux driver. |
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Copyright(c) 1999 - 2013 Intel Corporation. |
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Contents ======== - Identifying Your Adapter - Additional Configurations - Support Identifying Your Adapter ======================== This driver supports all 82575, 82576 and 82580-based Intel (R) gigabit network connections. For specific information on how to identify your adapter, go to the Adapter & Driver ID Guide at: http://support.intel.com/support/go/network/adapter/idguide.htm Command Line Parameters ======================= The default value for each parameter is generally the recommended setting, unless otherwise noted. max_vfs ------- Valid Range: 0-7 Default Value: 0 This parameter adds support for SR-IOV. It causes the driver to spawn up to max_vfs worth of virtual function. Additional Configurations ========================= Jumbo Frames ------------ Jumbo Frames support is enabled by changing the MTU to a value larger than |
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the default of 1500. Use the ip command to increase the MTU size. |
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For example: |
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ip link set dev eth<x> mtu 9000 |
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This setting is not saved across reboots. Notes: - The maximum MTU setting for Jumbo Frames is 9216. This value coincides with the maximum Jumbo Frames size of 9234 bytes. |
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- Using Jumbo frames at 10 or 100 Mbps is not supported and may result in poor performance or loss of link. |
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ethtool |
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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 latest |
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version of ethtool can be found at: |
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http://ftp.kernel.org/pub/software/network/ethtool/ |
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Enabling Wake on LAN* (WoL) --------------------------- |
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WoL is configured through the ethtool* utility. |
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For instructions on enabling WoL with ethtool, refer to the ethtool man page. |
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WoL will be enabled on the system during the next shut down or reboot. For this driver version, in order to enable WoL, the igb driver must be loaded when shutting down or rebooting the system. Wake On LAN is only supported on port A of multi-port adapters. Wake On LAN is not supported for the Intel(R) Gigabit VT Quad Port Server Adapter. Multiqueue ---------- In this mode, a separate MSI-X vector is allocated for each queue and one for "other" interrupts such as link status change and errors. All interrupts are throttled via interrupt moderation. Interrupt moderation must be used to avoid interrupt storms while the driver is processing one interrupt. The moderation value should be at least as large as the expected time for the driver to process an interrupt. Multiqueue is off by default. REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not found, the system will fallback to MSI or to Legacy interrupts. |
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MAC and VLAN anti-spoofing feature ---------------------------------- When a malicious driver attempts to send a spoofed packet, it is dropped by the hardware and not transmitted. An interrupt is sent to the PF driver notifying it of the spoof attempt. When a spoofed packet is detected the PF driver will send the following message to the system log (displayed by the "dmesg" command): Spoof event(s) detected on VF(n) Where n=the VF that attempted to do the spoofing. |
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Setting MAC Address, VLAN and Rate Limit Using IProute2 Tool ------------------------------------------------------------ You can set a MAC address of a Virtual Function (VF), a default VLAN and the rate limit using the IProute2 tool. Download the latest version of the iproute2 tool from Sourceforge if your version does not have all the features you require. |
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Support ======= For general information, go to the Intel support website at: 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 the supported kernel with a supported adapter, email the specific information related to the issue to e1000-devel@lists.sf.net |