Hi,
> -----Original Message-----
> From: dev <dev-boun...@dpdk.org> On Behalf Of Matan Azrad
> Sent: Thursday, February 13, 2020 3:03 PM
> To: dev@dpdk.org
> Cc: Slava Ovsiienko <viachesl...@mellanox.com>; sta...@dpdk.org
> Subject: [dpdk-dev] [PATCH] net/mlx5: fix tunnel flow priority
>
> 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")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Matan Azrad <ma...@mellanox.com>
> Acked-by: Ori Kam <or...@mellanox.com>
> ---
> drivers/net/mlx5/mlx5_flow_dv.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5_flow_dv.c
> b/drivers/net/mlx5/mlx5_flow_dv.c
> index a9bb0b4..a8c8a58 100644
> --- a/drivers/net/mlx5/mlx5_flow_dv.c
> +++ b/drivers/net/mlx5/mlx5_flow_dv.c
> @@ -7620,6 +7620,8 @@ struct field_modify_info modify_tcp[] = {
> case RTE_FLOW_ITEM_TYPE_GRE:
> flow_dv_translate_item_gre(match_mask,
> match_value,
> items, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_GRE;
> break;
> case RTE_FLOW_ITEM_TYPE_GRE_KEY:
> @@ -7630,27 +7632,37 @@ struct field_modify_info modify_tcp[] = {
> case RTE_FLOW_ITEM_TYPE_NVGRE:
> flow_dv_translate_item_nvgre(match_mask,
> match_value,
> items, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_GRE;
> break;
> case RTE_FLOW_ITEM_TYPE_VXLAN:
> flow_dv_translate_item_vxlan(match_mask,
> match_value,
> items, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_VXLAN;
> break;
> case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
> flow_dv_translate_item_vxlan_gpe(match_mask,
> match_value, items,
> tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_VXLAN_GPE;
> break;
> case RTE_FLOW_ITEM_TYPE_GENEVE:
> flow_dv_translate_item_geneve(match_mask,
> match_value,
> items, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_GENEVE;
> break;
> case RTE_FLOW_ITEM_TYPE_MPLS:
> flow_dv_translate_item_mpls(match_mask,
> match_value,
> items, last_item, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_MPLS;
> break;
> case RTE_FLOW_ITEM_TYPE_MARK:
> @@ -7692,6 +7704,8 @@ struct field_modify_info modify_tcp[] = {
> case RTE_FLOW_ITEM_TYPE_GTP:
> flow_dv_translate_item_gtp(match_mask,
> match_value,
> items, tunnel);
> + matcher.priority = flow->rss.level >= 2 ?
> + MLX5_PRIORITY_MAP_L2 :
> MLX5_PRIORITY_MAP_L4;
> last_item = MLX5_FLOW_LAYER_GTP;
> break;
> default:
> --
> 1.8.3.1
Patch applied to next-net-mlx,
Kindest regards,
Raslan Darawsheh
