343 lines
5.9 KiB
HTML
343 lines
5.9 KiB
HTML
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Configuring your Linux Kernel</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.52"><LINK
|
|
REL="HOME"
|
|
TITLE="Linux PPP HOWTO"
|
|
HREF="index.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Maintaining a permanent connection to the net with pppd."
|
|
HREF="x582.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Knowing your hardware"
|
|
HREF="x640.html"></HEAD
|
|
><BODY
|
|
CLASS="CHAPTER"
|
|
BGCOLOR="#FFFFFF"
|
|
TEXT="#000000"
|
|
LINK="#0000FF"
|
|
VLINK="#840084"
|
|
ALINK="#0000FF"
|
|
><DIV
|
|
CLASS="NAVHEADER"
|
|
><TABLE
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TH
|
|
COLSPAN="3"
|
|
ALIGN="center"
|
|
><A
|
|
HREF="http://www.linuxports.com/howto/ppp"
|
|
TARGET="_top"
|
|
>Linux PPP HOWTO</A
|
|
></TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="x582.html"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
></TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="x640.html"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="CHAPTER"
|
|
><H1
|
|
><A
|
|
NAME="KERNEL-CONFIGURATION"
|
|
>Chapter 10. Configuring your Linux Kernel</A
|
|
></H1
|
|
><DIV
|
|
CLASS="TOC"
|
|
><DL
|
|
><DT
|
|
><B
|
|
>Table of Contents</B
|
|
></DT
|
|
><DT
|
|
>10.1. <A
|
|
HREF="kernel-configuration.html#AEN609"
|
|
>Installing the Linux Kernel source</A
|
|
></DT
|
|
><DT
|
|
>10.2. <A
|
|
HREF="x640.html"
|
|
>Knowing your hardware</A
|
|
></DT
|
|
><DT
|
|
>10.3. <A
|
|
HREF="x644.html"
|
|
>Kernel compilation - the Linux 1.2.13 kernel</A
|
|
></DT
|
|
><DT
|
|
>10.4. <A
|
|
HREF="x656.html"
|
|
>Kernel compilation - the Linux 1.3.x, 2.0.x, and 2.2.x kernels</A
|
|
></DT
|
|
><DT
|
|
>10.5. <A
|
|
HREF="x676.html"
|
|
>Note on PPP-2.x and <TT
|
|
CLASS="LITERAL"
|
|
>/proc/net/dev</TT
|
|
></A
|
|
></DT
|
|
><DT
|
|
>10.6. <A
|
|
HREF="x686.html"
|
|
>General kernel config considerations for PPP</A
|
|
></DT
|
|
></DL
|
|
></DIV
|
|
><P
|
|
>In order to use PPP, your Linux kernel must be compiled to include PPP
|
|
support. Obtain the Linux source code for your kernel if you do not
|
|
already have this - it belongs in <TT
|
|
CLASS="LITERAL"
|
|
>/usr/src/linux</TT
|
|
> on Linux's standard
|
|
file system.</P
|
|
><P
|
|
>Check out this directory - many Linux distributions install the source
|
|
tree (the files and subdirectories) as part of their installation process.</P
|
|
><P
|
|
>At bootup, your Linux kernel prints out a great deal of information.
|
|
Amongst this is information about PPP support and if the kernel includes
|
|
it. To view this information, look at your syslog file or use
|
|
<TABLE
|
|
BORDER="0"
|
|
BGCOLOR="#E0E0E0"
|
|
WIDTH="100%"
|
|
><TR
|
|
><TD
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>dmesg | less</PRE
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
>
|
|
to display the information to the screen. If your kernel includes
|
|
PPP support, you will see lines like</P
|
|
><P
|
|
> <TABLE
|
|
BORDER="0"
|
|
BGCOLOR="#E0E0E0"
|
|
WIDTH="100%"
|
|
><TR
|
|
><TD
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>PPP Dynamic channel allocation code copyright 1995 Caldera, Inc.
|
|
PPP line discipline registered.</PRE
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
> </P
|
|
><P
|
|
>(this is for the Linux 2.x.x kernel series).</P
|
|
><P
|
|
>Linux kernel sources can be obtained by ftp from <TT
|
|
CLASS="LITERAL"
|
|
>sunsite.unc.edu</TT
|
|
> or its
|
|
mirror sites.</P
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="AEN609"
|
|
>10.1. Installing the Linux Kernel source</A
|
|
></H1
|
|
><P
|
|
>The following are brief instructions for obtaining and installing the
|
|
Linux kernel sources. Full information can be obtained from <A
|
|
HREF="http://sunsite.unc.edu/mdw/HOWTO/Kernel-HOWTO.html"
|
|
TARGET="_top"
|
|
>The Linux Kernel HOWTO</A
|
|
>.</P
|
|
><P
|
|
>In order to install and compile the Linux kernel, you need to be logged
|
|
in as root.</P
|
|
><P
|
|
> <P
|
|
></P
|
|
><OL
|
|
TYPE="1"
|
|
><LI
|
|
><P
|
|
>Change directory to the <TT
|
|
CLASS="LITERAL"
|
|
>/usr/src</TT
|
|
> directory
|
|
|
|
<TT
|
|
CLASS="LITERAL"
|
|
>cd /usr/src</TT
|
|
>.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>Check in <TT
|
|
CLASS="LITERAL"
|
|
>/usr/src/linux</TT
|
|
> to see if you already have the
|
|
sources installed.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>If you don't have the sources, get them from <A
|
|
HREF="ftp://sunsite.unc.edu/pub/Linux/kernel/"
|
|
TARGET="_top"
|
|
>Linux kernel source directory</A
|
|
> or your nearest mirror.
|
|
|
|
Select the appropriate directory- v2.0 if you are running a 2.0.x
|
|
kernel, or v2.2 if you are running a 2.2.x kernel.
|
|
|
|
If you are looking for earlier versions of the kernel (such as 1.2.X),
|
|
these are kept in <A
|
|
HREF="ftp://sunsite.unc.edu/pub/Linux/kernel/old"
|
|
TARGET="_top"
|
|
>Old Linux kernel source directory</A
|
|
>.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>Choose the appropriate kernel - usually the most recent one
|
|
available is what you are looking for. Retrieve this and put the source
|
|
tar file in <TT
|
|
CLASS="LITERAL"
|
|
>/usr/src</TT
|
|
>.
|
|
|
|
<I
|
|
CLASS="EMPHASIS"
|
|
>Note</I
|
|
>: a 'tar' file is an archive - possibly compressed (as are the
|
|
Linux kernel source tar files) containing many files in a number of
|
|
directories. It is the Linux equivalent of a DOS multi-directory zip file. </P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>If you already have the Linux sources installed but are upgrading
|
|
to a new kernel, you must remove the old sources. Use the
|
|
command
|
|
|
|
<TT
|
|
CLASS="LITERAL"
|
|
>rm -rf /usr/src/linux</TT
|
|
>.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>Now uncompress and extract the sources using the command
|
|
|
|
<TT
|
|
CLASS="LITERAL"
|
|
>tar xzf linux-X.X.XX.tar.gz</TT
|
|
>
|
|
|
|
where "X.X.XX" is the version of the kernel you downloaded.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>Now, <TT
|
|
CLASS="LITERAL"
|
|
>cd /usr/src/linux</TT
|
|
> and read the README file. This contains
|
|
an excellent explanation of how to go about configuring and compiling a
|
|
new kernel. Read this file, (it's a good idea to print it out and have a
|
|
copy handy whilst you are compiling until you have done this enough
|
|
times to know your way around).</P
|
|
></LI
|
|
></OL
|
|
> </P
|
|
></DIV
|
|
></DIV
|
|
><DIV
|
|
CLASS="NAVFOOTER"
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="x582.html"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="index.html"
|
|
>Home</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="x640.html"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Maintaining a permanent connection to the net with <I
|
|
CLASS="EMPHASIS"
|
|
>pppd</I
|
|
>.</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
> </TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Knowing your hardware</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |