netdev - RE: [Intel-wired-lan] [PATCH net-next 2/3] ixgbe: optimize for XDP

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Date:   Wed, 10 Mar 2021 04:19:01 +0000
From:   "Jambekar, Vishakha" <vishakha.jambekar@...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 2/3] ixgbe: 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 2/3] ixgbe: optimize for
> XDP_REDIRECT in xsk path
> 
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Optimize ixgbe_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 under 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/ixgbe/ixgbe_xsk.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
>
Tested-by: Vishakha Jambekar <vishakha.jambekar@...el.com>