X4 series adapters support transmit (TX) and receive (RX) Layer3/4 checksum offload, as well as TCP segmentation offload. To ensure maximum performance from the adapter, all task offloads must be enabled, which is the default setting on the adapter. For more information, see Tuning Performance.
To change settings for TX and RX Layer3/4 checksum offload, use the ethtool command:
ethtool --offload <interface> [rx on|off] [tx on|off]