DMA_RX_CSUM_TCP
hw->rx_cfg |= (DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP);
if (hw->rx_cfg & (DMA_RX_CSUM_UDP | DMA_RX_CSUM_TCP))
hw->rx_cfg |= DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP;
hw->rx_cfg &= ~(DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP);