Method and system for efficiently using buffer space

Details Method and system for efficiently using buffer space Method and system for efficiently using buffer space

2011-04-12

2011-04-12

Patel, Jayanti K (Department: 2465)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S429000, C370S469000, C370S476000

Reexamination Certificate

active

07924859

ABSTRACT:
A method and system for transferring iSCSI protocol data units (“PDUs”) to a host system is provided. The system includes a host bus adapter with a TCP/IP offload engine. The HBA includes, a direct memory access engine operationally coupled to a pool of small buffers and a pool of large buffers, wherein an incoming PDU size is compared to the size of a small buffer and if the PDU fits in the small buffer, then the PDU is placed in the small buffer. If the incoming PDU size is compared to a large buffer size and if the incoming PDU size is less than the large buffer size then the incoming PDU is placed in the large buffer. If the coming PDU size is greater than a large buffer, then the incoming PDU is placed is more than one large buffer and a pointer to a list of large buffers storing the incoming PDU is placed in a small buffer.

REFERENCES:
patent: 5797033 (1998-08-01), Ecclesine
patent: 5940404 (1999-08-01), Delp et al.
patent: 6112267 (2000-08-01), McCormack et al.
patent: 7222221 (2007-05-01), Agesen et al.
patent: 2006/0288187 (2006-12-01), Burugula et al.
patent: 2007/0067543 (2007-03-01), Fujise et al.

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