From: Eric Dumazet
> Sent: 01 July 2015 23:14
> To: Joe Perches
...
> > > Then please use netdev_alloc_skb_ip_align(), so that you get rid of
> > > skb_reserve()
> >
> > It seems there are ~50 of these in the kernel tree
> > that could be converted.
> >
>
> Make sure the 2 is really NET_IP_ALIGN
>
> Some hardwares need 2, even if NET_IP_ALIGN is 0 (on x86 arches for
> example)
Even on x86 aligning the ethernet receive data on a 4n+2
boundary is likely to give marginally better performance
than aligning on a 4n boundary.
David
