[PATCH] net/bridge: Add 'hairpin' port forwarding mode

David Miller davem at davemloft.net
Thu Aug 13 16:27:16 PDT 2009


From: "Fischer, Anna" <anna.fischer at hp.com>
Date: Thu, 13 Aug 2009 16:55:16 +0000

> This patch adds a 'hairpin' (also called 'reflective relay') mode
> port configuration to the Linux Ethernet bridge kernel module.
> A bridge supporting hairpin forwarding mode can send frames back
> out through the port the frame was received on.
> 
> Hairpin mode is required to support basic VEPA (Virtual
> Ethernet Port Aggregator) capabilities.
> 
> You can find additional information on VEPA here:
> http://tech.groups.yahoo.com/group/evb/
> http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf
> http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf
> 
> An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode'
> is provided to allow configuring hairpin mode from userspace tools.
> 
> Signed-off-by: Paul Congdon <paul.congdon at hp.com>
> Signed-off-by: Anna Fischer <anna.fischer at hp.com>

Applied to net-next-2.6


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