TCP and IP header checksum offloading is pretty ubiquitous, along with segmentation offloads (i.e. https://en.wikipedia.org/wiki/Large_send_offload).

There is a more heavy handed offload in what Windows calls "TCP Chimney Offload" (https://docs.microsoft.com/en-us/windows-hardware/drivers/ne...), but it isn't as commonly used and is generally disfavored.