Invention Grant
US08438265B2 Method of offloading iSCSI PDU corruption-detection digest generation from a host processing unit, and related iSCSI offload engine
失效
从主机处理单元卸载iSCSI PDU损坏检测摘要生成的方法以及相关的iSCSI卸载引擎
- Patent Title: Method of offloading iSCSI PDU corruption-detection digest generation from a host processing unit, and related iSCSI offload engine
- Patent Title (中): 从主机处理单元卸载iSCSI PDU损坏检测摘要生成的方法以及相关的iSCSI卸载引擎
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Application No.: US11163958Application Date: 2005-11-04
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Publication No.: US08438265B2Publication Date: 2013-05-07
- Inventor: Giora Biran , Vadim Makhervaks , Leah Shalev
- Applicant: Giora Biran , Vadim Makhervaks , Leah Shalev
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Joseph P. Abate, Esq.
- Priority: EP04300757 20041104
- Main IPC: G06F15/173
- IPC: G06F15/173
Abstract:
A method of offloading, from a host data processing unit (205), the generation of data corruption-detection digests for iSCSI PDUs to be transmitted as TCP segments over respective TCP connections. An iSCSI layer processing software (310) executed by the host data processing unit provides a command descriptor list (320) containing command descriptors adapted to identify portions of at least one iSCSI PDU to be transmitted, and data corruption-detection digest descriptors (CRC DESC(PDUa); CRC DESC(PDUb)), each one associated with a respective PDU data corruption-detection digest. An iSCSI processing offload engine (223) transmits the iSCSI PDU over the respective TCP connection, based on the descriptors in the command descriptor list; during the transmission, the iSCSI PDU data corruption-detection digest are calculated, and the calculated data corruption-detection digest is saved in the corresponding data corruption-detection digest descriptor in the command descriptor list.
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