File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/Documentation/networking/igb.txt b/Documentation/networking/igb.txt
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+Linux* Base Driver for Intel(R) Ethernet Network Connection
+===========================================================
+
+Intel Gigabit Linux driver.
+Copyright(c) 1999 - 2013 Intel Corporation.
+
+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
+ the default of 1500. Use the ip command to increase the MTU size.
+ For example:
+
+ ip link set dev eth<x> mtu 9000
+
+ 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.
+
+ - Using Jumbo frames at 10 or 100 Mbps is not supported and may result in
+ poor performance or loss of link.
+
+ ethtool
+ -------
+ The driver utilizes the ethtool interface for driver configuration and
+ diagnostics, as well as displaying statistical information. The latest
+ version of ethtool can be found at:
+
+ http://ftp.kernel.org/pub/software/network/ethtool/
+
+ Enabling Wake on LAN* (WoL)
+ ---------------------------
+ WoL is configured 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 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.
+
+ 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.
+
+ 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.
+
+
+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