netdev - RE: [Intel-wired-lan] [PATCH net-next 3/3] ice: optimize for XDP

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Date:   Fri, 5 Feb 2021 16:09:31 +0000
From:   "Kuruvinakunnel, George" <george.kuruvinakunnel@...el.com>
To:     Magnus Karlsson <magnus.karlsson@...il.com>,
        "Karlsson, Magnus" <magnus.karlsson@...el.com>,
        "Topel, Bjorn" <bjorn.topel@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "maciejromanfijalkowski@...il.com" <maciejromanfijalkowski@...il.com>
Subject: RE: [Intel-wired-lan] [PATCH net-next 3/3] ice: optimize for
 XDP_REDIRECT in xsk path

> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of Magnus
> Karlsson
> Sent: Wednesday, December 2, 2020 8:37 PM
> To: Karlsson, Magnus <magnus.karlsson@...el.com>; Topel, Bjorn
> <bjorn.topel@...el.com>; intel-wired-lan@...ts.osuosl.org; Nguyen, Anthony L
> <anthony.l.nguyen@...el.com>
> Cc: netdev@...r.kernel.org; maciejromanfijalkowski@...il.com
> Subject: [Intel-wired-lan] [PATCH net-next 3/3] ice: optimize for XDP_REDIRECT in
> xsk path
> 
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Optimize ice_run_xdp_zc() for the XDP program verdict being XDP_REDIRECT in
> the zsk zero-copy path. This path is only used when having AF_XDP zero-copy on
> and in that case most packets will be directed to user space. This provides a little
> over 100k extra packets in throughput on my server when running l2fwd in
> xdpsock.
> 
> Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com>
> ---
>  drivers/net/ethernet/intel/ice/ice_xsk.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 

Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@...el.com>