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.

Date of Patent:
Feb. 22, 2011

Filed:

Dec. 06, 2004
Applicants:

Gregg A. Bouchard, Round Rock, TX (US);

Thomas F. Hummel, Marlborough, MA (US);

Richard E. Kessler, Shrewsbury, MA (US);

Muhammed R. Hussain, Pleasanton, CA (US);

Yen Lee, San Jose, CA (US);

Inventors:

Gregg A. Bouchard, Round Rock, TX (US);

Thomas F. Hummel, Marlborough, MA (US);

Richard E. Kessler, Shrewsbury, MA (US);

Muhammed R. Hussain, Pleasanton, CA (US);

Yen Lee, San Jose, CA (US);

Assignee:

Cavium Networks, Inc., Mountain View, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 12/28 (2006.01); G06F 15/167 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method and apparatus for ordering, synchronizing and scheduling work in a multi-core network services processor is provided. Each piece of work is identified by a tag that indicates how the work is to be synchronized and ordered. Throughput is increased by processing work having different tags in parallel on different processor cores. Packet processing can be broken up into different phases, each phase having a different tag dependent on ordering and synchronization constraints for the phase. A tag switch operation initiated by a core switches a tag dependent on the phase. A dedicated tag switch bus minimizes latency for the tag switch operation.


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