[dpdk-stable] [PATCH] net/mlx5: fix enum misusing for steering registers

[Michael Baum <michaelba@mellanox.com>]

The mlx5_flow_action_copy_mreg structure contains a field called src
type enum modify_reg, similarly the mlx5_rte_flow_item_tag field
contains a field called id type enum modify_reg.
The enum modify_reg variable represents different registers in the
system and it also has a field called REG_NONE whose value is 0 which
means that the register does not exist.

The flow_mreg_add_copy_action function sets a variable of struct
mlx5_flow_action_copy_mreg type, and initializes the src field to be 0.
similarly the flow_create_split_metadata function sets a variable of
struct mlx5_rte_flow_item_tag type and initializes the id field to be 0.
In both functions, they initialize a enum modify_reg type variable with
an int type value while modify_reg has an appropriate field for that
value (REG_NONE).

Replace assigning 0 with REG_NONE in both functions.

Fixes: dd3c774f6ffb ("net/mlx5: add metadata register copy table")
Fixes: 71e254bc0294 ("net/mlx5: split Rx flows to provide metadata copy")
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.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 b56bee4..aba8f41 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -3011,7 +3011,7 @@ struct mlx5_flow_tunnel_info {
 	};
 	struct mlx5_flow_action_copy_mreg cp_mreg = {
 		.dst = REG_B,
-		.src = 0,
+		.src = REG_NONE,
 	};
 	struct rte_flow_action_jump jump = {
 		.group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
@@ -4067,7 +4067,7 @@ struct mlx5_flow_tunnel_info {
 		/* Internal PMD action to set register. */
 		struct mlx5_rte_flow_item_tag q_tag_spec = {
 			.data = qrss_id,
-			.id = 0,
+			.id = REG_NONE,
 		};
 		struct rte_flow_item q_items[] = {
 			{
-- 
1.8.3.1