Invention Grant
- Patent Title: Protocol-independent receive-side scaling
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Application No.: US14734629Application Date: 2015-06-09
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Publication No.: US09755972B1Publication Date: 2017-09-05
- Inventor: Yuhong Mao , Richard Lee Sites
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: H04L12/861
- IPC: H04L12/861 ; H04L12/935 ; H04L12/743

Abstract:
A system and method for protocol independent receive side scaling (RSS) includes storing a plurality of RSS hash M-tuple definitions, each definition corresponding to one of a set of possible protocol header combinations for routing an incoming packet, the set of possible protocol header combinations being modifiable to include later-developed protocols. Based on initial bytes of the incoming packet, a pattern of protocol headers is detected, and used to select one of the plurality of RSS hash M-tuple definitions. The selected RSS hash M-tuple definition is applied as a protocol-independent arbitrary set of bits to the headers of the incoming packet to form a RSS hash M-tuple vector, which is used to compute a RSS hash. Based on the RSS hash, a particular queue is selected from a set of destination queues identified for the packet, and the packet is delivered to the selected particular queue.
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