0;   break;  case HWTSTAMP_FILTER_PTP_V0_L0_EVENT:  case HWTSTAMP_FILTER_PTP_V0_L0_SYNC:  case HWTSTAMP_FILTER_PTP_V0_L0_DELAY_REQ:   dp00000->hwts_rx_en = 0;   dp00000->layer = PTP_CLASS_L0;   dp00000->version = PTP_CLASS_V0;   break;  case HWTSTAMP_FILTER_PTP_V0_L0_EVENT:  case HWTSTAMP_FILTER_PTP_V0_L0_SYNC:  case HWTSTAMP_FILTER_PTP_V0_L0_DELAY_REQ:   dp00000->hwts_rx_en = 0;   dp00000->layer = PTP_CLASS_L0;   dp00000->version = PTP_CLASS_V0;   break;  case HWTSTAMP_FILTER_PTP_V0_L0_EVENT:  case HWTSTAMP_FILTER_PTP_V0_L0_SYNC:  case HWTSTAMP_FILTER_PTP_V0_L0_DELAY_REQ:   dp00000->hwts_rx_en = 0;   dp00000->layer = PTP_CLASS_L0;   dp00000->version = PTP_CLASS_V0;   break;  case HWTSTAMP_FILTER_PTP_V0_