> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@xxxxxxxxxx> On Behalf Of
> Lobakin, Alexandr
> Sent: Wednesday, December 8, 2021 2:25 AM
> To: intel-wired-lan@xxxxxxxxxxxxxxxx
> Cc: Andre Guedes <andre.guedes@xxxxxxxxx>; Jesper Dangaard Brouer
> <hawk@xxxxxxxxxx>; Daniel Borkmann <daniel@xxxxxxxxxxxxx>;
> netdev@xxxxxxxxxxxxxxx; Krzysztof Kazimierczak
> <krzysztof.kazimierczak@xxxxxxxxx>; bpf@xxxxxxxxxxxxxxx; John Fastabend
> <john.fastabend@xxxxxxxxx>; Alexei Starovoitov <ast@xxxxxxxxxx>; Brouer,
> Jesper <brouer@xxxxxxxxxx>; Björn Töpel <bjorn@xxxxxxxxxx>; Jeff Kirsher
> <jeffrey.t.kirsher@xxxxxxxxx>; Jakub Kicinski <kuba@xxxxxxxxxx>; linux-
> kernel@xxxxxxxxxxxxxxx; David S. Miller <davem@xxxxxxxxxxxxx>; Vedang
> Patel <vedang.patel@xxxxxxxxx>
> Subject: [Intel-wired-lan] [PATCH v3 net-next 2/9] i40e: respect metadata on
> XSK Rx to skb
>
> For now, if the XDP prog returns XDP_PASS on XSK, the metadata will be lost
> as it doesn't get copied to the skb.
> Copy it along with the frame headers. Account its size on skb allocation, and
> when copying just treat it as a part of the frame and do a pull after to "move"
> it to the "reserved" zone.
> net_prefetch() xdp->data_meta and align the copy size to speed-up
> memcpy() a little and better match i40e_costruct_skb().
>
> Fixes: 0a714186d3c0 ("i40e: add AF_XDP zero-copy Rx support")
> Suggested-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
> Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
> Signed-off-by: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx>
> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@xxxxxxxxxxxxxxx>
> ---
> drivers/net/ethernet/intel/i40e/i40e_xsk.c | 14 ++++++++++----
> 1 file changed, 10 insertions(+), 4 deletions(-)
>
Tested-by: Kiran Bhandare <kiranx.bhandare@xxxxxxxxx> A Contingent Worker at Intel
