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:
Apr. 19, 2011
Filed:
Jul. 14, 2004
Douglas Morgan Freimuth, New York, NY (US);
Elbert C. HU, Elmhurst, NY (US);
Ronald Mraz, South Salem, NY (US);
Erich M. Nahum, New York, NY (US);
Prashant Pradhan, New Rochelle, NY (US);
Sambit Sahu, Mahopac, NY (US);
John Michael Tracey, Scarsdale, NY (US);
Douglas Morgan Freimuth, New York, NY (US);
Elbert C. Hu, Elmhurst, NY (US);
Ronald Mraz, South Salem, NY (US);
Erich M. Nahum, New York, NY (US);
Prashant Pradhan, New Rochelle, NY (US);
Sambit Sahu, Mahopac, NY (US);
John Michael Tracey, Scarsdale, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A number of improvements in network adapters that offload protocol processing from the host processor are provided. Specifically, mechanisms for handling memory management and optimization within a system utilizing an offload network adapter are provided. The memory management mechanism permits both buffered sending and receiving of data as well as zero-copy sending and receiving of data. In addition, the memory management mechanism permits grouping of DMA buffers that can be shared among specified connections based on any number of attributes. The memory management mechanism further permits partial send and receive buffer operation, delaying of DMA requests so that they may be communicated to the host system in bulk, and expedited transfer of data to the host system.