[dpdk-dev] [RFC PATCH] ixgbe: ixgbe_recv_pkts_vec shouldn't override mbuf buffer length

[Thomas Monjalon]

2014-12-05 19:03, Jean-Mickael Guerin:
> On 05/12/2014 18:07, Ananyev, Konstantin wrote:
> > From: Jean-Mickael Guerin [mailto:jean-mickael.guerin at 6wind.com]
> >> On 05/12/2014 16:20, Konstantin Ananyev wrote:
> >>> That's an alternative way to fix the problem described in the patch:
> >>> http://dpdk.org/ml/archives/dev/2014-December/009394.html.
> >>> The main difference is:
> >>> - move buf_len fields out of rearm_data marker.
> >>> - make ixgbe_recv_pkts_vec() not touch buf_len field at all
> >>> (as all other RX functions behave).
> >>>
> >>> Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> >>
> >> The patch introduces writes on unaligned data, but we can assume no
> >> performance penalty on intel hw, correct?
> >
> > Yes to both:
> > it introduces 64bit unaligned store.
> > I run performance test on IVB board, didn't see any degradation.
> > Konstantin
> 
> OK fine by me:
> 
> Acked-by: Jean-Mickael Guerin <jean-mickael.guerin at 6wind.com>

Applied, even if the patch is RFC, it will be validated as part of -rc3.

Thanks
-- 
Thomas