[dpdk-stable] [PATCH] net/mlx5: fix packet padding config for RxQ via DevX

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: Alexander Kozyrev <akozyrev at nvidia.com>
> Sent: Sunday, November 15, 2020 4:26 PM
> To: dev at dpdk.org
> Cc: stable at dpdk.org; Raslan Darawsheh <rasland at nvidia.com>; Dekel Peled
> <dekelp at nvidia.com>; Matan Azrad <matan at nvidia.com>
> Subject: [PATCH] net/mlx5: fix packet padding config for RxQ via DevX
> 
> Received packets can be aligned to the size of the cache line on
> PCI transactions. This could improve performance by avoiding
> partial cache line writes in exchange for increased PCI bandwidth.
> 
> This feature is supposed to be controlled by the rxq_pkt_pad_en
> devarg and it is true for an RxQ created via the Verbs API.
> But in the DevX API case, it is erroneously controlled by the
> rxq_cqe_pad_en devarg instead, which is in charge of the CQE
> padding instead and should not control the RxQ creation.
> 
> Fix DevX RxQ creation by using the proper configuration flag for
> Rx packet padding that is being set by the rxq_pkt_pad_en devarg.
> 
> Fixes: dc9ceff73c ("net/mlx5: create advanced RxQ via DevX")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Alexander Kozyrev <akozyrev at nvidia.com>
> Acked-by: Matan Azrad <matan at nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh