[dpdk-stable] [PATCH] net/mlx5: fix tunnel flow prioriity

[Kevin Traynor]

On 13/12/2020 18:33, Matan Azrad wrote:
> [ upstream commit 050bfe033c2dcaff1f6cfb3110aa90bf80071513 ]
> 
> The PMD manages internally the priority of the flows in addition to
> the user configured priority.
> So, 2 flows with the same user priority may get different priority.
> The method:
> As much as the flow is more specific it gets higher priority
> (higher means first to be matched).
> 
> In addition, When the user creates a RSS flow the PMD splits the flows
> according to the flow RSS layers as the HW requests for RSS TIR.
> The internal priority for each flow is decided by the flow last layer.
> L2, L3 and L4 (L2 low and L4 high).
> 
> The tunnel layer was wrongly decided to be L4 all the time, even when
> the flow is configured with inner-RSS.
> 
> Hence, the first RSS split which takes the tunnel layer priority all the
> time will be matched before the more specific splits.
> 
> Change the priority of tunnel layer to be L2 when inner-RSS is
> configured.
> 
> Fixes: d4a405186b73 ("net/mlx5: support tunnel RSS level")
> 
> Signed-off-by: Matan Azrad <matan at nvidia.com>
> Acked-by: Ori Kam <orika at nvidia.com>
> ---
>  drivers/net/mlx5/mlx5_flow_dv.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Applied, thanks.