netdev - Re: vxlan gso is broken by stackable gso

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Message-ID: <1382748742.4032.24.camel@edumazet-glaptop.roam.corp.google.com>
Date:	Fri, 25 Oct 2013 17:52:22 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexei Starovoitov <ast@...mgrid.com>
Cc:	David Miller <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>, stephen@...workplumber.org,
	netdev@...r.kernel.org
Subject: Re: vxlan gso is broken by stackable gso_segment()

On Fri, 2013-10-25 at 16:25 -0700, Eric Dumazet wrote:

> Please note the original performance is not that good, you mentioned 230
> Mbps on lxc, while I get more than 5Gb/s on a 10G link.
> 
> This should be investigated ...

This is probably trivial to increase performance :

veth currently do not support any kind of tunneling TSO :

tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
tx-mpls-segmentation: off [fixed]

I'll submit a patch for net-next


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