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實驗二 Linux 下網路驅動程式追蹤 PowerPoint PPT Presentation


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實驗二 Linux 下網路驅動程式追蹤. 教師: 助教: 1998/10/19 High Speed Network Lab. Department of Computer Information Science, NCTU. Outline. Why Linux ? Linux 核心的內部 Linux 開機始末 實驗步驟. Why Linux ?. Free !! Compatible with System V & BSD UNIX Compliant to POSIX 1.0 Fast update !! Internet Powerful !!

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實驗二 Linux 下網路驅動程式追蹤

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Linux

實驗二Linux下網路驅動程式追蹤

教師:

助教:

1998/10/19

High Speed Network Lab.

Department of Computer Information Science, NCTU


Outline

Outline

  • Why Linux ?

  • Linux核心的內部

  • Linux開機始末

  • 實驗步驟


Why linux

Why Linux ?

  • Free !!

    • Compatible with System V & BSD UNIX

    • Compliant to POSIX 1.0

  • Fast update !!

    • Internet

  • Powerful !!

    • Pure 32-bit OS

    • Candidate OS for embedded system

  • Source code open !!

    • Suitable for academic use


  • Linux1

    Linux 核心內部


    Linux2

    Linux 開機始末

    • Load the kernel

    • Probe & setup the hardware

    • Create system process

    • System initialization

    • getty

    • login process


    Linux

    實驗步驟

    • 安裝 Linux

    • 追蹤開機始末

    • 編譯核心

    • 設定Linux網路組態

    • 在kernel中追蹤 network driver


    Linux3

    安裝 Linux

    • Where should I install it from ?

    • Which distribution should I choose from ?

    • Which version should I take ?

    • How do I install it ?

    • Does there exist any document ?

      • /usr/doc


    Linux4

    追蹤Linux開機始末

    • Capture bootup sequence

      • dmesg

      • Shift + [PgUp | PgDw]

      • syslogd

    • Traverse /etc/initab

      • /etc/rc.d/

  • Tools

    • grep

    • Microsoft Visio Studio - Edit - Find in files


  • Linux

    編譯核心

    • FTP, tar

    • make [config | menuconfig | xconfig]

      • Modules support

      • Choose your adapter driver

      • Choose TCP/IP protocol stack

    • make dep, make clean, make zImage

    • make modules, make modules_install

    • move to /boot

    • re-write boot sector (lilo -v -v -v)


    Linux

    設定網路組態

    • Internet 參數

      • Network Interface Configuration

        • ifconfig eth0 x.x.x.x netmask y.y.y.y broadcast z.z.z.z

      • Routing table Configuration

        • route add -net default gw 140.113.88.254 dev eth0

        • route add -net 140.113.23.0 dev eth0


    Kernel network driver

    追蹤kernel中的network driver

    • Trace by debugger

    • Trace by printing, record by logging

      • klogd vs. syslogd

    • Trigger network modules by “ping”


    Linux

    決定待測機器

    • Host IP= H, Netmask=M, Router=R

    • far active host (IP address=F)

    • near active host (IP address=N1)

    • near inactive host (IP address=N2)

      (H and M)=(R and M)=(R and N1)=(R and N2)≠(R and F)


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