1. ga2x00-1.4.zip Driver
2. LINUX.TXT File Contents

LINUX.TXT Driver File Contents (ga2x00-1.4.zip)

\HELP\LINUX.TXT

Introduction:
=============
This document presents information to users about National Semiconductor's
DP83820 Gigabit Ethernet adapter and the relevant LINUX software driver 
version 1.1 for LINUX operating system kernel 2.2.X/kernel 2.4.X.

Installation Notes For Linux Kernel 2.2.X/Kernel 2.4.X:
=======================================================
 1.To install the driver, login as root, insert the floppy/CD-ROM with
   the driver, and mount the disk into the system with the following
   command.

         # mount -t msdos /dev/fd0 /mnt     (floppy)
         # mount -t iso9660 /dev/cdrom /mnt (CD-ROM)

 2.Copy the files from floppy into an appropriate directory.

         # mkdir dp83820
         # cd dp83820
         # cp /mnt/linux/22-24/* . (*)
         
        (*)The directory "22-24" stands for the Linux kernel version
           you use.
           Do "ls -al /lib/modules" to find out the exact version number 
           of linux kernel.

 3.To create a new driver object module and install the current
   driver object module in the file system run

         # make
         # cp dpm.o /lib/modules/2.2.12-4.x/net (*)
         
        (*)The directory "2.2.12-4.x" stands for the Linux kernel version
           you use.
           Do "ls -al /lib/modules" to find out the exact version number 
           of linux kernel.

 4.To Make the driver load when the system boots up, the following 
   lines needs to be put in any of the startup scripts like
   /etc/rc.d/rc.local or /etc/rc.d/init.d/network

         # /sbin/insmod /lib/modules/2.2.12-4.x/net/dpm.o (*)
         # /sbin/ifconfig <interface-name> <ip-addr>
         
        (*)The directory "2.2.12-4.x" stands for the Linux kernel version
           you use.
           Do "ls -al /lib/modules" to find out the exact version number 
           of linux kernel.

 The driver can be dynamically loaded and unloaded from a running 
 kernel with the following commands
 
          # insmod dpm.o
          # rmmod dpm.o
 
 To install and test the driver, shutdown the network stack, install
 the driver,and re-start the startup the stack again.
 
          # sh /etc/rc.d/init.d/network stop
          # insmod dpm.o
          # sh /etc/rc.d/init.d/network start
 
 The tunable parameters of the driver like the Receive and Transmit 
 buffers are put in the file nsm.h under the heading "Tunable
 parameters".
 The default value of RX_QUEUE_SZ is 100, on a high end system putting 
 a value of 200 for RX_QUEUE_SZ can give better performance.
 
 To try jumbo frames, the mtu size can be increased using the ifconfig 
 utility, as follows 
 
          # ifconfig <interface-name> mtu <mtu-size>
          eg: ifconfig eth0 mtu 3000
 
 The BUF_SIZE_MAX value in nsm.h (Tunable parameter) should be changed
 to 4096. 
 
 <mtu-size> can be increased upto 4000 bytes for sane operation.