netdev - Re: No GSOs to i40e with VXLAN

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Date:	Fri, 13 Jun 2014 19:33:40 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	Joseph Gasparakis <joseph.gasparakis@...el.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
Subject: Re: No GSOs to i40e with VXLAN

On Fri, 2014-06-13 at 18:59 -0700, Tom Herbert wrote:

> I verified tunnel offload works properly with bnx2x (I'm using simple
> vxlan interfaces not OVS).
> 
> One possibility I can think of is that UDP checksums are somehow
> enabled. If you're using IPv6 this probably the case (but I assume
> you're seeing this with IPv4). If checksums are inadvertently enabled
> somehow in IPv4 this should should up in tcpdump on the Ethernet
> interface.

Tom, I have a pair of hosts with i40e NIC, I can give you access to.



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