Re: [Xen-devel] [PATCH net v5] xen-netback: fix fragment detection in checksum setup

[Eric Dumazet <eric.dumazet@xxxxxxxxx>]

On Tue, 2013-12-10 at 16:24 +0000, Paul Durrant wrote:

> Yes, I guess that's true but if we decide to pull up at all then is it 
> harmful to pull more than we absolutely need?

Pulling too many bytes might hurt aggregation.

When one skb is merged to another one (skb_try_coalesce()), if you have
payload in skb->head, we cannot free the head, and need one additional
'frag'




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