[PATCH] net/mlx5: fix assert on getting register of sample flow

[Raslan Darawsheh]

Hi,
> -----Original Message-----
> From: Jiawei(Jonny) Wang <jiaweiw at nvidia.com>
> Sent: Friday, December 9, 2022 3:59 PM
> To: Slava Ovsiienko <viacheslavo at nvidia.com>; Matan Azrad
> <matan at nvidia.com>; Shahaf Shuler <shahafs at nvidia.com>
> Cc: dev at dpdk.org; Raslan Darawsheh <rasland at nvidia.com>; Jiawei(Jonny)
> Wang <jiaweiw at mellanox.com>; stable at dpdk.org
> Subject: [PATCH] net/mlx5: fix assert on getting register of sample flow
> 
> From: Jiawei Wang <jiaweiw at mellanox.com>
> 
> The sample flow tried to get the reserved metadata register for match
> implicitly, and if the reserved metadata register was invalid then back to use
> the application tag.
> 
> The assertion failure was caused while getting register due to the reserved
> metadata regC is invalid on CX-5 trusted device(VF/SF).
> 
> This patch adds the checking for reserved metadata register before getting
> the register, to avoid assertion failure.
> 
> Fixes: 9a726360dd30 ("net/mlx5: fix sample flow action on trusted device")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Jiawei Wang <jiaweiw at mellanox.com>
> Acked-by: Slava Ovsiienko <viacheslavo at nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh