Re: [patch v4, kernel version 3.2.1] net/ipv4/ip_gre: Ethernetmultipoint GRE over IP

[Eric Dumazet]

Le mercredi 18 janvier 2012 Ã 00:33 +0100, Stefan Gula a Ãcrit :
> From: Stefan Gula <steweg@xxxxxxxxx>
> 
> This patch is an extension for current Ethernet over GRE
> implementation, which allows user to create virtual bridge (multipoint
> VPN) and forward traffic based on Ethernet MAC address information in
> it. It simulates the Bridge behavior learning mechanism, but instead
> of learning port ID from which given MAC address comes, it learns IP
> address of peer which encapsulated given packet. Multicast, Broadcast
> and unknown-multicast traffic is send over network as multicast
> encapsulated GRE packet, so one Ethernet multipoint GRE tunnel can be
> represented as one single virtual switch on logical level and be also
> represented as one multicast IPv4 address on network level.
> 
> Signed-off-by: Stefan Gula <steweg@xxxxxxxxx>
> 
> ---
> 

Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>

I guess remaining performance point is to get a refcount less
ip_route_output_gre(), aka ip_route_output_gre_noref() :)



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