Documentation/networking/igb.txt

   1 Linux* Base Driver for Intel(R) Network Connection
   2 ==================================================
   3
   4 Intel Gigabit Linux driver.
   5 Copyright(c) 1999 - 2010 Intel Corporation.
   6
   7 Contents
   8 ========
   9
  10 - Identifying Your Adapter
  11 - Additional Configurations
  12 - Support
  13
  14 Identifying Your Adapter
  15 ========================
  16
  17 This driver supports all 82575, 82576 and 82580-based Intel (R) gigabit network
  18 connections.
  19
  20 For specific information on how to identify your adapter, go to the Adapter &
  21 Driver ID Guide at:
  22
  23     http://support.intel.com/support/go/network/adapter/idguide.htm
  24
  25 Command Line Parameters
  26 =======================
  27
  28 The default value for each parameter is generally the recommended setting,
  29 unless otherwise noted.
  30
  31 max_vfs
  32 -------
  33 Valid Range:   0-7
  34 Default Value: 0
  35
  36 This parameter adds support for SR-IOV.  It causes the driver to spawn up to
  37 max_vfs worth of virtual function.
  38
  39
  40 Additional Configurations
  41 =========================
  42
  43   Jumbo Frames
  44   ------------
  45   Jumbo Frames support is enabled by changing the MTU to a value larger than
  46   the default of 1500.  Use the ifconfig command to increase the MTU size.
  47   For example:
  48
  49        ifconfig eth<x> mtu 9000 up
  50
  51   This setting is not saved across reboots.
  52
  53   Notes:
  54
  55   - The maximum MTU setting for Jumbo Frames is 9216.  This value coincides
  56     with the maximum Jumbo Frames size of 9234 bytes.
  57
  58   - Using Jumbo Frames at 10 or 100 Mbps may result in poor performance or
  59     loss of link.
  60
  61   Ethtool
  62   -------
  63   The driver utilizes the ethtool interface for driver configuration and
  64   diagnostics, as well as displaying statistical information. The latest
  65   version of ethtool can be found at:
  66
  67   http://ftp.kernel.org/pub/software/network/ethtool/
  68
  69   Enabling Wake on LAN* (WoL)
  70   ---------------------------
  71   WoL is configured through the ethtool* utility.
  72
  73   For instructions on enabling WoL with ethtool, refer to the ethtool man page.
  74
  75   WoL will be enabled on the system during the next shut down or reboot.
  76   For this driver version, in order to enable WoL, the igb driver must be
  77   loaded when shutting down or rebooting the system.
  78
  79   Wake On LAN is only supported on port A of multi-port adapters.
  80
  81   Wake On LAN is not supported for the Intel(R) Gigabit VT Quad Port Server
  82   Adapter.
  83
  84   Multiqueue
  85   ----------
  86   In this mode, a separate MSI-X vector is allocated for each queue and one
  87   for "other" interrupts such as link status change and errors.  All
  88   interrupts are throttled via interrupt moderation.  Interrupt moderation
  89   must be used to avoid interrupt storms while the driver is processing one
  90   interrupt.  The moderation value should be at least as large as the expected
  91   time for the driver to process an interrupt. Multiqueue is off by default.
  92
  93   REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not
  94   found, the system will fallback to MSI or to Legacy interrupts.
  95
  96   MAC and VLAN anti-spoofing feature
  97   ----------------------------------
  98   When a malicious driver attempts to send a spoofed packet, it is dropped by
  99   the hardware and not transmitted.  An interrupt is sent to the PF driver
 100   notifying it of the spoof attempt.
 101
 102   When a spoofed packet is detected the PF driver will send the following
 103   message to the system log (displayed by  the "dmesg" command):
 104
 105   Spoof event(s) detected on VF(n)
 106
 107   Where n=the VF that attempted to do the spoofing.
 108
 109 Support
 110 =======
 111
 112 For general information, go to the Intel support website at:
 113
 114     www.intel.com/support/
 115
 116 or the Intel Wired Networking project hosted by Sourceforge at:
 117
 118     http://sourceforge.net/projects/e1000
 119
 120 If an issue is identified with the released source code on the supported
 121 kernel with a supported adapter, email the specific information related
 122 to the issue to e1000-devel@lists.sf.net