Apparatus and method for packet communications

Details Apparatus and method for packet communications Apparatus and method for packet communications

1994-11-22

1995-07-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, 370 99, 364238, 3642423, 36424294, H04L 1256

Patent

active

054368928

ABSTRACT:
An apparatus and method for enabling disassembly of packets into their components and for assignment of main storage areas without software intervention in the reception processing of a communications network. Direct partition is enabled by hardware without intervention of software by adding control information directly accessible by the receiving DMA feature 6 to each communications packet. The transmitting DMA feature 6 transfers the contents of the DMA command queue to the communications control unit 7 before transferring the data in computer storage 10 to the communications control unit 7. This information is added to the top of each packet before being passed to the receiving end. The receiving DMA feature 6 transfers each whole packet not to a single reception buffer but to different reception buffers in element data units by use of both this information and the information in the DMA command queue at the receiving end. Communications software makes use of each reception buffer as it is without copying it onto another area.

REFERENCES:
patent: 4354263 (1982-10-01), Bordry et al.
patent: 4768190 (1988-08-01), Giancarlo
patent: 4951278 (1990-08-01), Biber et al.
patent: 5325361 (1994-06-01), Lederer et al.

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