net/mlx5e: Add listener to DMAC filter trap event

Add support for trapping packets which didn't match any DMAC in the MAC
table. Add a listener which adds/removes MAC trap rule in the flow
steering according to the trap's action trap/drop.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
index 5507efa..d078281 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/trap.c
@@ -360,6 +360,11 @@ static int mlx5e_handle_action_trap(struct mlx5e_priv *priv, int trap_id)
                if (err)
                        goto err_out;
                break;
+       case DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER:
+               err = mlx5e_add_mac_trap(priv, trap_id, mlx5e_trap_get_tirn(priv->en_trap));
+               if (err)
+                       goto err_out;
+               break;
        default:
                netdev_warn(priv->netdev, "%s: Unknown trap id %d\n", __func__, trap_id);
                err = -EINVAL;
@@ -379,6 +384,9 @@ static int mlx5e_handle_action_drop(struct mlx5e_priv *priv, int trap_id)
        case DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER:
                mlx5e_remove_vlan_trap(priv);
                break;
+       case DEVLINK_TRAP_GENERIC_ID_DMAC_FILTER:
+               mlx5e_remove_mac_trap(priv);
+               break;
        default:
                netdev_warn(priv->netdev, "%s: Unknown trap id %d\n", __func__, trap_id);
                return -EINVAL;