The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Sep. 01, 2004
Derek Rohde, Auburn, CA (US);
Bruce A. Klemin, Rocklin, CA (US);
Michael I. Thompson, Colfax, CA (US);
Derek Rohde, Auburn, CA (US);
Bruce A. Klemin, Rocklin, CA (US);
Michael I. Thompson, Colfax, CA (US);
QLOGIC, Corporation, Aliso Viejo, CA (US);
Abstract
A system with a host bus adapter ('HBA') having a TCP/IP offload engine is provided. The HBA includes logic for concurrently processing markers, data integrity fields ('DIFs') and digests by using plural counters that count words in a data stream and individual routing bits are set for markers, DIFs and digests based on the plural counter values. When a counter reaches a certain threshold value, then locator bits are set for a field and the locator bits are forwarded with the data stream. A marker counter is incremented when each word in a data stream passes by the marker counter and markers can be inserted at a programmed interval. For DIF calculation an offset of a first byte in a DMA transfer and partial cyclic redundancy code value is seeded into a DIF location counter, which is incremented for each byte of data that passes by the DIF location counter.