[PATCH v1] net/mlx5: fix suffix groups without default FDB rule

[Rongwei Liu]

With fdb_def_rule_en=0, mlx5 SWS still decrements meter and sampler
suffix groups, causing continuation rules to be installed in the
wrong tables.

Decrement these groups only when the default FDB rule is active,
keeping suffix placement consistent with group-to-table translation.

Fixes: 1939eb6f660c ("net/mlx5: support flow port action with HWS")
Cc: Dariusz Sosnowski <dsosnowski at nvidia.com>
Cc: stable at dpdk.org

Signed-off-by: Rongwei Liu <rongweil at nvidia.com>
Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index b0eac185b5..37654918b5 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -7048,7 +7048,7 @@ flow_create_split_meter(struct rte_eth_dev *dev,
 			goto exit;
 		}
 		/* Setting the sfx group atrr. */
-		sfx_attr.group = sfx_attr.transfer ?
+		sfx_attr.group = (sfx_attr.transfer && priv->fdb_def_rule) ?
 				(MLX5_FLOW_TABLE_LEVEL_METER - 1) :
 				 MLX5_FLOW_TABLE_LEVEL_METER;
 		flow_split_info->prefix_layers =
@@ -7229,7 +7229,7 @@ flow_create_split_sample(struct rte_eth_dev *dev,
 			sfx_tbl_data = container_of(sfx_tbl,
 						struct mlx5_flow_tbl_data_entry,
 						tbl);
-			sfx_attr.group = sfx_attr.transfer ?
+			sfx_attr.group = (sfx_attr.transfer && priv->fdb_def_rule) ?
 			(sfx_tbl_data->level - 1) : sfx_tbl_data->level;
 		} else {
 			MLX5_ASSERT(attr->transfer);
-- 
2.53.0