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igb: Add anti-spoofing feature documentation

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Add the documentation for the anti-spoofing feature in the HW.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Greg Rose 2011-03-12 11:56:02 +00:00 committed by Jeff Kirsher
parent c326de88b8
commit 7c158399c2
1 changed files with 13 additions and 0 deletions
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13
Documentation/networking/igb.txt
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@ -93,6 +93,19 @@ Additional Configurations
REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not
found, the system will fallback to MSI or to Legacy interrupts. 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.
Support Support
======= =======