The Technology Research Of The Driver Hardening In Carrier Grade Linux

Carrier Grade Linux has been enjoyed by many telecom carrier manufacturers for its inexpensive cost,opening code,independent with platform,rapid upgrade. Clinux is a developing Carrier Grade Linux in HuaWei Inc. Driver hardening is a necessary part in Clinux because it highly requires availability of device.This paper collected and consults the domestic and foreign massive literature material about driver hardening. It emphasizes on traditional driver hardening technique in Linux, and improves on it for CLinux requirement. It aims at making four major contributions:Firstly, based on the project background, this paper analyzes the architecture of Carrier Grade Linux, emphatically introduces traditional driver hardening technique and analyzes its shortcoming, finally points out its necessity.Secondly, based on ATCA(Advanced Telecom Computing Architecture) the paper designs and implements CLinux's driver hardening, which perfects traditional driver hardening technique.Thirdly, based on CLinux's driver hardening architecture, this paper researchs CLinux's fault handling. This paper designs and implements a fault injection method for simulating device fault and performs some fault injection experiments of E100 Pro 100/+ network card. From these experiments, we obtain fault data and apply data mining method to analyze these data. From analysis, this paper draws some conclusions, which are in favor of improving network card's availability.Fourthly, this paper researchs and analyzes the driver code of E100 Pro 100/+ network card in Linux, and improves it. Based on the kernel interface and the essential application method of the enterprise level Event Logging system, this paper analysis related knowledgeof data mining method, proposes the connection method and the classified method which are used for to analyze fault data.The work and contribution of this paper are important part of Clinux and have realistic significance to the research and implementation of Carrier Grade Linux. It provides the preliminary realization prototype of driver hardening technique and have considerable referential values to related research.