Subject: Re: A performance regression of gretap

From: Cong Wang <[email-masked]>
Date: Thu, 11 Jul 2013 10:15:10 +0800

On Wed, 2013-07-10 at 06:01 -0400, Cong Wang wrote:
> 
> Could you please take a look? And, gre tunnel is fine, this
> problem only exists for gretap. I reviewed the gretap code,
> but can't find any bug.

After digging it a little bit, I found some of the packets on RX side
have incorrect TCP checksum after going through gretap, while the
packets captured on eth0 are all correct.

Thanks.