sk98lin.txt

《嵌入式系统设计与实例开发实验教材二源码》Linux内核移植与编译实验

   and port B as eth1. Both ports can be used independend with distinct
   IP addresses.
   The preferred port setting is not used. Rlmt is turned off.
   

  NOTE: The modes CheckLocalPort and CheckSeg are meant to operate in
        configurations where a network path between the ports on one
        adapter exists. Especially, they are not designed to work where
        adapters are connected back-to-back.
***


(6) LARGE FRAME SUPPORT
=======================

Large frames (also called jumbo frames) are now supported by the
driver. This can result in a greatly improved throughput if
transfering large amounts of data.
To enable large frames, set the MTU (maximum transfer unit)
of the interface to the value you wish (up to 9000). The command
for this is:
  ifconfig eth0 mtu 9000
This will only work if you have two adapters connected back-to-back
or if you use a switch that supports large frames. When using a
switch, it should be configured to allow large frames, without
autonegotiating for them.
The setting must be done on all adapters that can be reached by
the large frames. If one adapter is not set to receive large frames,
it will simply drop them.

You can switch back to the standard ethernet frame size with:
  ifconfig eth0 mtu 1500

To make this setting persitent, add a script with the 'ifconfig'
line to the system startup sequence (named something like "S99sk98lin"
in /etc/rc.d/rc2.d).
***


(7) TROUBLESHOOTING
===================

If you run into problems during installation, check those items:

Problem:  The SK-98xx adapter can not be found by the driver.
Reason:   Look in /proc/pci for the following entry:
             'Ethernet controller: SysKonnect SK-98xx ...'
	  If this entry exists, then the SK-98xx adapter has been
	  found by the system and should be able to be used.
	  If this entry does not exist or if the file '/proc/pci'
	  is not there, then you may have a hardware problem or PCI
	  support may not be enabled in your kernel.
	  The adapter can be checked using the diagnostic program
	  which is available from the SysKonnect web site:
	      www.syskonnect.de
	  Some COMPAQ machines have a problem with PCI under
	  Linux. This is described in the 'PCI howto' document
	  (included in some distributions or available from the
	  www, e.g. at 'www.linux.org'). This might be fixed in the
	  2.2.x kernel series (I've not tested it).

Problem:  Programs such as 'ifconfig' or 'route' can not be found or
          you get an error message 'Operation not permitted'.
Reason:   You are not logged in as user 'root'. Logout and 
          login as root or change to root via 'su'.

Problem:  Using the command 'ping <address>', you get a message
          "ping: sendto: Network is unreachable".
Reason:   Your route is not set up correct.
	  If you are using RedHat, you probably forgot
	  to set up the route in 'network configuration'.
	  Check the existing routes with the 'route' command
	  and check if there is an entry for 'eth0' and if
	  it is correct.

Problem:  The driver can be started, the adapter is connected
          to the network, but you can not receive or transmit
          any packet; e.g. 'ping' does not work.
Reason:   You have an incorrect route in your routing table.
          Check the routing table with the command 'route' and
	  read the manual pages about route ('man route').
NOTE:	  Although the 2.2.x kernel versions generate the routing
	  entry automatically, you may have problems of this kind
	  here, too. We found a case where the driver started correct
	  at system boot, but after removing and reloading the driver,
	  the route of the adapter's network pointed to the 'dummy0'
	  device and had to be corrected manually.
	  
Problem:  You want to use your computer as a router between
          multiple IP subnetworks (using multiple adapters), but
	  you can not reach computers in other subnetworks.
Reason:   Either the router's kernel is not configured for IP
	  forwarding or there is a problem with the routing table
	  and gateway configuration in at least one of the
	  computers.

Problem:  At the start of the driver, you get an error message:
	  "eth0: -- ERROR --
	   Class: internal Software error
	   Nr: 0xcc
	   Msg: SkGeInitPort() cannot init running ports"
Reason:	  You are using a driver compiled for single processor
	  machines on an multiprocessor machine with SMP (Symetric
	  MultiProcessor) kernel.
	  Configure your kernel appropriate and recompile the kernel or
	  the modules.

If your problem is not listed here, please contact SysKonnect's technical
support for help ([e-mail]).
When contacting our technical support, please ensure that the
following information is available:
- System Manufacturer and Model
- Boards in your system
- Distribution
- Kernel version
***


(8) HISTORY
===========

VERSION 4.02 (In-Kernel version)
New Features:
- Add Kernel 2.4 changes
Known limitations:
- None

VERSION 4.01 (In-Kernel version)
Problems fixed:
- Full statistics support for DualNet mode
Known limitations:
- None

VERSION 4.00 (In-Kernel version)
Problems fixed:
- Memory leak found 
New Features:
- Proc filesystem integration
- DualNet functionality integrated
- Rlmt networks added
Known limitations:
- statistics partially incorrect in DualNet mode

VERSION 3.04 (In-Kernel version)
Problems fixed:
- Driver start failed on UltraSPARC
- Rx checksum calculation for big endian machines did not work
- Jumbo frames were counted as input-errors in netstat

VERSION 3.03 (Standalone version)
Problems fixed:
- Compilation did not find script "printver.sh" if "." not in PATH
Known limitations:
- None

VERSION 3.02 (In-Kernel version)
Problems fixed:
- None
New Features:
- Integration in Linux kernel source (2.2.14 and 2.3.29) 
Known limitations:
- None

VERSION 3.01
Problems fixed:
- None
New Features:
- Full source release
Known limitations:
- None

VERSION 3.00
Problems fixed:
- None
New Features:
- Support for 1000Base-T adapters (SK-9821 and SK-9822)
Known limitations:
- None

VERSION 1.07
Problems fixed:
- RlmtMode parameter value strings were wrong (#10437)
- Driver sent too many RLMT frames (#10439)
- Driver did not recognize network segmentation (#10440)
- RLMT switched too often on segmented network (#10441)
Known limitations:
- None

VERSION 1.06
Problems fixed:
- System panic'ed after some time when running with 
  RlmtMode=CheckOtherLink or RlmtMode=CheckSeg (#10421)
  Panic message: "Kernel panic: skput: over ... dev: eth0"
- Driver did not switch back to default port when connected
  back-to-back (#10422).
Changes:
- RlmtMode parameter names have changed
New features:
- There is now a version for ALPHA processors
Known limitations:
- None

VERSION 1.05
Problems fixed:
- Driver failed to load on kernels with version information
  for module symbols enabled
Known limitations:
- None

VERSION 1.04
Problems fixed:
- Large frame support does work now (no autonegotiation
  support for large frames, just manually selectable)
New Features:
- Receive checksumming in hardware
- Performance optimizations
  Some numbers (on two PII-400 machines, back-to-back):
  netpipe: 300 MBit/sec, with large frames: 470 MBit/sec
  ttcp:  38 MByte/sec, with large frames: 60 MByte/sec
  ttcp (UDP send): 66 MByte/sec, with large frames: 106 MByte/sec
Known limitations:
- None

VERSION 1.03
Problems fixed:
- Unloading with "rmmod" caused segmentation fault (#10415)
- The link LED flickered from time to time, if no link was
  established (#10402)
- Installation problems with RedHat 6.0 (#10409)
New Features:
- Connection state ouput at "network connection up"
Known limitations:
- None

VERSION 1.02
Problems fixed:
- Failed with multiple adapters
- Failed with Single Port adapters
- Startup string was only displayed if adapter found
- No link could be established on certain switches when the switches were
  rebooted. (#10377)
Known limitations:
- Segmentation fault at "rmmod" with kernel 2.2.3 on some machines

VERSION 1.01
Problems fixed:
- Sensor status was not set back to 'ok' after 'warning/error'. (#10386)
Changes:
- improved parallelism in driver

VERSION 1.00
Known limitations:
- not tested with all kernel versions (I don't have that much time :-)
- only x86 version available (if you need others, ask for it)
- source code not completely available

***End of Readme File***