Abbreviated as TSO, TCP segmentation offload is used to reduce the overhead of on fast . TSO breaks down large groups of sent over a into smaller that pass through all the network elements between the source and destination. This type of offload relies on the (NIC) to segment the data and then add the TCP, IP and data link layer protocol headers to each segment. The NIC must TSO. TSO is also called large segment offload (LSO).