Invention Grant
- Patent Title: Preserving data integrity of DMA descriptors
- Patent Title (中): 保持DMA描述符的数据完整性
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Application No.: US12330450Application Date: 2008-12-08
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Publication No.: US07921237B1Publication Date: 2011-04-05
- Inventor: Thomas Holland , William McGovern
- Applicant: Thomas Holland , William McGovern
- Applicant Address: US CA Sunnyvale
- Assignee: Network Appliance, Inc.
- Current Assignee: Network Appliance, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: G06F13/28
- IPC: G06F13/28 ; G06F11/00 ; H03M13/00
Abstract:
A storage system includes a host computer coupled to a device to transfer a DMA descriptor between the host and the device. An integrity manager manages the integrity of the DMA descriptor between the host computer and the device. The integrity manager embeds a host-side DMA descriptor integrity value in the DMA descriptor and the device transfers the DMA descriptor to a device memory. The device generates a device-side DMA descriptor integrity value and compares it to the host-side DMA descriptor integrity value to determine if the descriptor is corrupted.
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