DATA TRANSFER ERROR CHECKING

摘要

A network interface controller implementation (S152) that performs direct data placement to memory where all segments of a particular connection are aligned, i.e. cuts-through without accessing reassembly buffers (S159) (i.e., a "Fast" connection type), or if all segments are non-aligned moves data through reassembly buffer (S159) (i.e., "Slow" connection type). The type of connection can change from Fast to Slow and back. The implementation preferably conducts CRC validation (S154) for a majority of inbound DDP segments in the Fast connection before sending a TCP acknowledgement (S156) confirming segment reception. The method of computing a CRC value (S151) according to the present invention assumes that each TCP segment starts with an aligned DDP segment and that the first two bytes of a TCP payload is an MPA length field of an MPA frame.