Re: [Xen-devel] [PATCH net-next] xen-netback: Fix pull size in checksum_setup_ip*

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: David Miller [mailto:davem@xxxxxxxxxxxxx]
> Sent: 30 November 2013 21:10
> To: Zoltan Kiss
> Cc: Ian Campbell; Wei Liu; xen-devel@xxxxxxxxxxxxxxxxxxxx;
> netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Jonathan Davies;
> Paul Durrant
> Subject: Re: [PATCH net-next] xen-netback: Fix pull size in
> checksum_setup_ip*
> 
> From: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> Date: Fri, 29 Nov 2013 18:56:47 +0000
> 
> > Before checksum setup we need to make sure we have enough data in
> linear
> > buffer, so we do a pull if not. The calculation of the required data counts
> > with skb->network_header, which is the headroom size actually. This is not
> > necessary, and can cause unreasonable pulling. I've also removed
> > MAX_IPOPTLEN, as we only need the base header at that point.
> >
> > Signed-off-by: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> 
> The net-next tree is no open, therefore it is not appropriate to submit
> patches targetting to that tree at this time.
> 
> I will make an explicit announcement on netdev when I have openned
> the net-next tree, so it will be clear exactly when you can submit
> patches targetting that tree again.
> 
> Thank you.

I think this patch should be for net rather than net-next anyway. Since it 
appears that maybe_pull_tail() has bigger problems I'll incorporate this fix as 
part of v4 of the fix for fragment detection.

  Paul

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