net/mlx5: fix comparison sign in flow engine

[ upstream commit 16047bd ]

The clang compiler warns on size mismatches of several
comparisons.

warning: comparison of integers of different signs

To resolve those the right types is used/cast to.

Fixes: 3e8edd0 ("net/mlx5: update metadata register ID query")
Fixes: e554b67 ("net/mlx5: support flow tag")
Fixes: c8f0abe ("net/mlx5: fix meter color register consideration")

Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

drivers/net/mlx5/mlx5_flow.c

@@ -798,7 +798,7 @@ mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 		start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 			    (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 		skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
-		if (id > (REG_C_7 - start_reg))
+		if (id > (uint32_t)(REG_C_7 - start_reg))
 			return rte_flow_error_set(error, EINVAL,
 						  RTE_FLOW_ERROR_TYPE_ITEM,
 						  NULL, "invalid tag id");
@@ -814,7 +814,7 @@ mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 		 */
 		if (skip_mtr_reg && config->flow_mreg_c
 		    [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
-			if (id >= (REG_C_7 - start_reg))
+			if (id >= (uint32_t)(REG_C_7 - start_reg))
 				return rte_flow_error_set(error, EINVAL,
 						       RTE_FLOW_ERROR_TYPE_ITEM,
 							NULL, "invalid tag id");

drivers/net/mlx5/mlx5_flow_dv.c

@@ -955,7 +955,7 @@ flow_dv_convert_action_set_reg
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "too many items to modify");
 	MLX5_ASSERT(conf->id != REG_NON);
-	MLX5_ASSERT(conf->id < RTE_DIM(reg_to_field));
+	MLX5_ASSERT(conf->id < (enum modify_reg)RTE_DIM(reg_to_field));
 	actions[i] = (struct mlx5_modification_cmd) {
 		.action_type = MLX5_MODIFICATION_TYPE_SET,
 		.field = reg_to_field[conf->id],