Re: [Xen-devel] [PATCH 1/1] xen/netback: correctly calculate required slots of skb.

[annie li <annie.li@xxxxxxxxxx>]

On 2013-7-10 15:48, Wei Liu wrote:
> On Wed, Jul 10, 2013 at 10:31:49AM +0800, annie li wrote:
> [...]
> > > This seems to differ from netbk_gop_frag_copy. In that function it's
> > > like
> > >
> > >      if (*head && skb_shinfo(skb)->gso_size && !vif->gso_prefix)
> > I mixed netbk_gop_frag_copy and xen_netbk_count_skb_slots just now,
> > so please ignore the comments here in my last email.
> > In xen_netbk_count_skb_slots, we have following code already, so it
> > is not necessary to add gso condition here.
> >
> >          if (skb_shinfo(skb)->gso_size)
> >                  count++;
> Oh I see. But the condition still seems to be different from the
> original one -- you missed !vif->gso_prefix.
The original code in xen_netbk_count_skb_slots does not have 
!vif->gso_prefix. But I think you are right, it is better to keep 
consistent with that in netbk_gop_frag_copy.
Thanks
Annie

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