Calculation of network data check sums by dedicated hardware wit

Details Calculation of network data check sums by dedicated hardware wit Calculation of network data check sums by dedicated hardware wit

1993-09-09

1996-05-28

Harrell, Robert B.

Boots, shoes, and leggings

364DIG1, 364DIG2, 364265, 3642651, 364266, 3642663, G06F 1312, G06F 1314, G06F 1110

Patent

active

055220398

ABSTRACT:
A method and apparatus are presented for an improved data transferring technique between a network and a computing system. A network adapter implements a data transfer from a network to the memory of a destination computing system, accumulating a checksum of all data transferred. The dedicated hardware allows data to be transferred through it and a checksum to be accumulated without intervention by the processor of the destination computing system. Software corrections can generate a checksum of the header data and then generate a net checksum by subtracting the header checksum from the gross checksum accumulated by the dedicated hardware, thus achieving the desired result with minimal intervention by the processor of the destination computing system.

REFERENCES:
patent: 5430842 (1995-07-01), Thompson et al.
Andy DeBaets, et al., "High Performance Pa-Risc Snakes Motherboard I/O", Feb. 22-26, 1993, pp. 433-440 IEE Computer Society Press Reprint. IEEE Computer Society Technical Committe On Computer Graphics.

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