Packet Processing Pipeline Domain Segmentation
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Solution Overview
Problem
As packet processing pipelines grow in size and complexity, programming and managing them becomes challenging, particularly due to conflicts between software components and the difficulty of performing bug fixes without disrupting other programs, leading to potential malfunctions and operational disruptions.
Innovation Solution
The implementation of modular programming and domain-based resource management within packet processing pipelines, where software domains can execute independently, allowing programs to be loaded and unloaded at runtime without affecting other domains, and using compiler and runtime checks to enforce configuration rules and prevent resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If packet processing pipelines grow in size and complexity to handle more functions, then the pipeline's capability and versatility improve, but programming and managing the pipeline becomes more challenging and error-prone
Solution Approach 1:
The patent divides the packet processing pipeline into multiple independent domains, where each domain can be programmed and managed separately. This segmentation allows complex pipeline functionality to be broken down into manageable, independent units that can be developed, tested, and maintained separately, reducing overall programming complexity while maintaining versatility.
2Productivity
If multiple programs execute concurrently on the packet processing pipeline to implement different network functions, then the pipeline's functionality and productivity improve, but conflicts between software components increase
Solution Approach 1:
The patent segments the packet processing pipeline into isolated domains, where each domain can execute multiple programs concurrently without interfering with other domains. This domain-based segmentation prevents software conflicts by ensuring that programs in different domains operate independently with dedicated resources, maintaining reliability while enabling high productivity through parallel execution.
3Reliability
If bug fixes are performed on software components in the packet processing pipeline, then the reliability of affected functions improves, but other programs may be disrupted
Solution Approach 1:
The patent organizes software into domain-based modules that can be independently updated. When bug fixes are needed, only the specific domain containing the bug needs to be modified and reloaded, while other domains continue to operate uninterrupted. This modular segmentation enables targeted maintenance that improves reliability of affected functions without disrupting overall pipeline productivity.
4Ease of operation
If the packet processing pipeline is programmed in a monolithic manner by a team of developers, then management and coordination are simplified, but the system becomes difficult to maintain and update
Solution Approach 1:
The patent divides the monolithic pipeline into domain-based modules that can be independently developed, managed, and maintained by different teams. Each domain represents a self-contained unit with clear boundaries, making it easier to assign responsibility, track changes, and perform maintenance without affecting the entire system. This modular approach improves ease of repair while maintaining manageable complexity through standardized domain interfaces.
Data Source
AI summary
Examples described herein relate to a packet processing device comprising a programmable packet processing pipeline that is logically partitioned into multiple domains including privileged and unprivileged domains. The multiple domains can span one or more stages of the programmable packet processing pipeline, wherein at least one stage is to perform match action operations.