Methods and systems for providing direct DMA

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United States of America Patent

PATENT NO 9154453
APP PUB NO 20120191800A1
SERIAL NO

13360340

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Abstract

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A method and system for efficient direct DMA for processing connection state information or other expediting data packets. One example is the use of a network interface controller to buffer TCP type data packets that may contain connection state information. The connection state information is extracted from a received packet. The connection state information is stored in a special DMA descriptor that is stored in a ring buffer area of a buffer memory that is accessible by a host processor when an interrupt signal is received. The packet is then discarded. The host processor accesses the ring buffer memory only to retrieve the stored connection state information from the DMA descriptor without having to access a packet buffer area in the memory.

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Patent Owner(s)

  • F5 NETWORKS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baumann, William R Seattle, US 13 371
Michels, Timothy Greenacres, US 6 202
Szabo, Paul I Shoreline, US 29 1463

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