net/mlx5: Add support for DSFP module EEPROM dumps

Allow the driver to recognise DSFP transceiver module ID and therefore
allow its EEPROM dumps using ethtool.
Signed-off-by: NVladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/port.c

@@ -454,6 +454,8 @@ int mlx5_query_module_eeprom_by_page(struct mlx5_core_dev *dev,
 		if (params->page > 3)
 			return -EINVAL;
 		break;
+	case MLX5_MODULE_ID_DSFP:
+		break;
 	default:
 		mlx5_core_err(dev, "Module ID not recognized: 0x%x\n", module_id);
 		return -EINVAL;

include/linux/mlx5/port.h

@@ -45,6 +45,7 @@ enum mlx5_module_id {
 	MLX5_MODULE_ID_QSFP             = 0xC,
 	MLX5_MODULE_ID_QSFP_PLUS        = 0xD,
 	MLX5_MODULE_ID_QSFP28           = 0x11,
+	MLX5_MODULE_ID_DSFP		= 0x1B,
 };
 
 enum mlx5_an_status {