netdev - Re: [ovs-dev] [PATCH net-next 00/22 v2] Lightweight & flow based encapsulation

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Date:	Wed, 22 Jul 2015 08:43:58 -0700
From:	roopa <roopa@...ulusnetworks.com>
To:	thomas.morin@...nge.com
CC:	Thomas Graf <tgraf@...g.ch>, rshearma@...cade.com,
	ebiederm@...ssion.com, hannes@...essinduktion.org,
	pshelar@...ira.com, jesse@...ira.com, davem@...emloft.net,
	daniel@...earbox.net, tom@...bertland.com, edumazet@...gle.com,
	jiri@...nulli.us, marcelo.leitner@...il.com,
	stephen@...workplumber.org, jpettit@...ira.com, kaber@...sh.net,
	simon.horman@...ronome.com, joestringer@...ira.com, ja@....bg,
	ast@...mgrid.com, weichunc@...mgrid.com, dev@...nvswitch.org,
	netdev@...r.kernel.org
Subject: Re: [ovs-dev] [PATCH net-next 00/22 v2] Lightweight & flow based
 encapsulation

On 7/22/15, 1:58 AM, thomas.morin@...nge.com wrote:
> Hi Thomas,
>
> This looks promising.
>
> One question: will this approach allow MPLS-in-GRE and MPLS-in-UDP ?
>
The current series was focused on IP to MPLS tunnels. But, the 
infrastructure allows associating encap state with routes and calling 
the respective encapsulation output handlers.

For MPLS-in-GRE and MPLS-in-UDP, it appears that MPLS LSP routes 
(af_mpls.c) could support associating GRE and UDP encap info (RTA_ENCAP 
and RTA_ENCAP_TYPE) similar to IP routes and the re-direction from MPLS 
to GRE or MPLS to UDP can be achieved in a similar way using the same 
infrastructure.

Thanks,
Roopa

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