[PATCH v3] net/mlx5: handle MPRQ incompatibility with external buffers

[Slava Ovsiienko]

> -----Original Message-----
> From: Alexander Kozyrev <akozyrev at nvidia.com>
> Sent: Saturday, March 12, 2022 1:08
> To: dev at dpdk.org
> Cc: Raslan Darawsheh <rasland at nvidia.com>; Slava Ovsiienko
> <viacheslavo at nvidia.com>; Matan Azrad <matan at nvidia.com>
> Subject: [PATCH v3] net/mlx5: handle MPRQ incompatibility with external
> buffers
> 
> Multi-Packet Rx queue uses PMD-managed buffers to store packets.
> These buffers are externally attached to user mbufs.
> This conflicts with the feature that allows using user-managed externally
> attached buffers in an application.
> Fall back to SPRQ in case external buffers mempool is configured.
> Add the corresponding limitation to MLX5 documentation that MPRQ and
> external data buffers cannot be used together.
> 
> Signed-off-by: Alexander Kozyrev <akozyrev at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>