Action Machine Assembling Response Packets
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Solution Overview
Problem
Current network processors face inefficiencies in processing data packets due to the need for high computational power and increased clock frequency, leading to higher costs and power dissipation, especially in managing Internet traffic for data-intensive applications like video streaming and Voice-over-IP.
Innovation Solution
An action machine within a network processor is designed with a first register array for fixed-length fields and a second register array for variable-length fields, allowing for the assembly of response packets by combining data from both arrays without requiring more powerful hardware or increased clock frequency, thereby enhancing parsing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the clock frequency of the logic storing and/or executing a parsing instruction is increased to improve parsing performance, then parsing speed is improved, but power dissipation increases
Solution Approach 1:
The parsing and packet assembly process is segmented into distinct functional units: a parser that extracts data from incoming packets, a first register array for fixed-length fields, a second register array for variable-length fields, and an action machine that assembles response packets. This segmentation allows each component to operate efficiently at lower clock frequencies while maintaining high overall processing throughput.
2Adaptability or versatility
If general-purpose processors are used to provide high flexibility in network processing, then adaptability is improved, but processing speed deteriorates
Solution Approach 1:
The action machine is designed with universal functionality to handle multiple packet types and protocols through a standardized interface. The register arrays can store data for different packet formats, and the action machine can assemble various response packets (ACK, RST, SYN, etc.) using the same hardware structure, providing both flexibility and high-speed processing.
3Productivity
If ASICs are used to achieve fast and efficient data packet processing, then processing speed is improved, but cost and flexibility worsen
Solution Approach 1:
The network processor employs dynamic, reconfigurable logic structures that can be programmed to handle different packet protocols and processing requirements. The register arrays and action machine can be dynamically configured through software control to optimize processing for specific applications, providing ASIC-like speed with GPP-like flexibility.
Data Source
AI summary
Proposed is an action machine for assembling response packets in a network processor. The action machine comprises: a first register array adapted to store data for entry into fixed-length fields of differing response packets, a fixed-length field having the same length in the differing response packets; and a second register array adapted to store data for entry into variable-length fields of differing response packets, a variable-length field having different values or lengths in the differing response packets. The action machine is adapted to assemble a response packet by combining data stored in the first register array with data stored in the second register array.