1Linux* Base Driver for Intel(R) Network Connection
2==================================================
3
4Intel Gigabit Linux driver.
5Copyright(c) 1999 - 2010 Intel Corporation.
6
7Contents
8========
9
10- Identifying Your Adapter
11- Additional Configurations
12- Support
13
14Identifying Your Adapter
15========================
16
17This driver supports all 82575, 82576 and 82580-based Intel (R) gigabit network
18connections.
19
20For specific information on how to identify your adapter, go to the Adapter &
21Driver ID Guide at:
22
23    http://support.intel.com/support/go/network/adapter/idguide.htm
24
25Command Line Parameters
26=======================
27
28The default value for each parameter is generally the recommended setting,
29unless otherwise noted.
30
31max_vfs
32-------
33Valid Range:   0-7
34Default Value: 0
35
36This parameter adds support for SR-IOV.  It causes the driver to spawn up to
37max_vfs worth of virtual function.
38
39
40Additional 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
109Support
110=======
111
112For general information, go to the Intel support website at:
113
114    www.intel.com/support/
115
116or the Intel Wired Networking project hosted by Sourceforge at:
117
118    http://sourceforge.net/projects/e1000
119
120If an issue is identified with the released source code on the supported
121kernel with a supported adapter, email the specific information related
122to the issue to e1000-devel@lists.sf.net
123