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:
Feb. 24, 2009
Filed:
Apr. 22, 2003
Colin C. Sharp, Santa Cruz, CA (US);
Clive M. Philbrick, San Jose, CA (US);
Daryl D. Starr, Milpitas, CA (US);
Stephen E. J. Blightman, San Jose, CA (US);
Colin C. Sharp, Santa Cruz, CA (US);
Clive M. Philbrick, San Jose, CA (US);
Daryl D. Starr, Milpitas, CA (US);
Stephen E. J. Blightman, San Jose, CA (US);
Alacritech, Inc., San Jose, CA (US);
Abstract
A TCP/IP offload network interface device (NID) is integrated with a processing device that executes a stack. The TCP/IP offload NID can either be a full TCP/IP offload device or a partial TCP/IP offload device. Common types of packets are processed by the NID in a fast-path such that the stack is offloaded of TCP and IP protocol processing tasks. A hash is made from the packet header and is pushed onto a queue. The hash is later popped off the queue and is used to identify an associated TCB number from a hash table. A mechanism caches hash buckets in SRAM and stores other hash buckets in DRAM. An 'IN SRAM CAM' is used to determine whether the TCB associated with the identified TCB number is cached in SRAM or whether it must be moved from DRAM into the SRAM cache. A lock table and a 'lock table CAM' mechanism is disclosed that facilitates multiple processors working on the protocol processing of a single packet.