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arXiv · 2110.06303

NetRep: Automatic Repair for Network Programs

Lei Shi·Yuepeng Wang·Rajeev Alur·Boon Thau Loo
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Abstract

Debugging imperative network programs is a challenging task for developers because understanding various network modules and complicated data structures is typically time-consuming. To address the challenge, this paper presents an automated technique for repairing network programs from unit tests. Specifically, given as input a faulty network program and a set of unit tests, our approach localizes the fault through symbolic reasoning, and synthesizes a patch such that the repaired program can pass all unit tests. It applies domain-specific abstraction to simplify network data structures and utilizes modular analysis to facilitate function summary reuse for symbolic analysis. We implement the proposed techniques in a tool called NetRep and evaluate it on 10 benchmarks adapted from real-world software-defined networking controllers. The evaluation results demonstrate the effectiveness and efficiency of NetRep for repairing network programs.

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Lei Shi, Yuepeng Wang, Rajeev Alur, Boon Thau Loo. 2021-10-12. NetRep: Automatic Repair for Network Programs. https://arxiv.org/abs/2110.06303

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