This commit itroduces support for CRC offload to direct data placement

               introduces

ULP on the receive side. Both DDP and CRC share a common API to
initialize the offload for a TCP socket. But otherwise, both can
be executed independently.

 From the API it not clear that the offload engine does crc32c, do you
see this extended to other crc types in the future?

Other than this the patch looks good to me,
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>