net/mlx5: fix zero metadata action

There is no reason to prevent the user from using zero metadata,
it indeed means no metadata, but sometimes the user may need to
report to datapath that there is no metadata anymore, which is
valid case.

Fixes: fcc8d2f716fd ("net/mlx5: extend flow metadata support")
Cc: stable@dpdk.org
Signed-off-by: Wisam Jaddo <wisamm@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index e7278f0..e2d6690 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -2109,10 +2109,6 @@ flow_dv_validate_action_set_meta(struct rte_eth_dev *dev,
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "meta data must be within reg C0");
-       if (!(conf->data & conf->mask))
-               return rte_flow_error_set(error, EINVAL,
-                                         RTE_FLOW_ERROR_TYPE_ACTION, action,
-                                         "zero value has no effect");
        return 0;
 }