A network interface controller implementation that performs direct data placement to memory where all segments of a particular connection are aligned, i.e. cuts-through without accessing reassembly buffers (i.e., a "Fast" connection type), or if all segments are nonaligned moves data through reassembly buffers (i.e., a "Slow" connection type). The type of connection can change from Fast to Slow and back. The implementation preferably conducts CRC validation for a majority of inbound DDP segments in the Fast connection before sending a TCP acknowledgement confirming segment reception. The method of computing a CRC value 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.
申请公布号
WO2005060594(A2)
申请公布日期
2005.07.07
申请号
WO2004US40919
申请日期
2004.12.08
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION;BIRAN, GIORA;MACHULSKY, ZORIK;MAKHERVAKS, VADIM;SHALEV, LEAH