netdev - Re: [net-next v4 07/16] i40e: Rx checksum offload for VXLAN

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Date:	Fri, 3 Jan 2014 11:07:39 -0800 (PST)
From:	Joseph Gasparakis <joseph.gasparakis@...el.com>
To:	Or Gerlitz <or.gerlitz@...il.com>
cc:	Joseph Gasparakis <joseph.gasparakis@...el.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"gospo@...hat.com" <gospo@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
Subject: Re: [net-next v4 07/16] i40e: Rx checksum offload for VXLAN



On Thu, 2 Jan 2014, Or Gerlitz wrote:

> On Thu, Jan 2, 2014 at 10:57 PM, Joseph Gasparakis
> <joseph.gasparakis@...el.com> wrote:
> 
> >
> > > The comment says that the driver has to compute the udp checksum
> > > **if** the packet has an outer udp checksum,
> > > but the driver call to issue checksumming is done unconditionally
> >
> >
> > This code runs when the right bits are set in the rx hardware descriptor
> > field (rx_ptype and rx_status), which implies the hardware has detected
> > ipv4 tunneling and there is non zero UDP csum.
> 
> 
> Got it -- thanks for explaining, also for the pointer on where
> skb->encapsulation is set
> 

Any time Or. And thanks for your reviews.
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