netdev - Re: [PATCH iproute] vxlan: Add support for remote checksum offload

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Message-ID: <20151129115421.43b196c5@xeon-e3>
Date:	Sun, 29 Nov 2015 11:54:21 -0800
From:	Stephen Hemminger <shemming@...cade.com>
To:	Tom Herbert <tom@...bertland.com>
CC:	<netdev@...r.kernel.org>, <kernel-team@...com>
Subject: Re: [PATCH iproute] vxlan: Add support for remote checksum offload

On Fri, 27 Nov 2015 10:23:43 -0800
Tom Herbert <tom@...bertland.com> wrote:

> This patch adds support to remote checksum checksum offload
> to VXLAN. This patch adds remcsumtx and remcsumrx to ip vxlan
> configuration to enable remote checksum offload for transmit
> and receive on the VXLAN tunnel.
> 
> https://tools.ietf.org/html/draft-herbert-vxlan-rco-00
> 
> Example:
> 
> ip link add name vxlan0 type vxlan id 42 group 239.1.1.1 dev eth0 \
>     udpcsum remcsumtx remcsumrx
> 
> Testing:
> 
> Ran single netperf over mlnx4 to illustrate the effest:
> 
> - Without RCO (UDP csum set to zero)
>   4335.99 Mbps
> - With RCO enabled
>   7661.81 Mbps
> 
> Signed-off-by: Tom Herbert <tom@...bertland.com>

Applied, thanks

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