Bug 151488

Summary: sk98lin driver drops udp packets
Product: Red Hat Enterprise Linux 3 Reporter: Hosting 2000 Account <hosting2000>
Component: kernelAssignee: John W. Linville <linville>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 3.0CC: jbaron, petrides, riel
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: RHSA-2005-663 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-09-28 14:51:33 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 156320    
Attachments:
Description Flags
The fix none

Description Hosting 2000 Account 2005-03-18 14:52:06 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050223 Firefox/1.0.1

Description of problem:
sk98lin driver drops udp frames > 200 bytes without checksum.

To fix it apply the following patch in drivers/net/sk98lin, taken from the
official driver
http://www.syskonnect.com/syskonnect/support/driver/d0102_driver.html

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. send a large udp-packet without checksum to the machine and you will get no reply
2.
3.
  

Additional info:
Comment 1 Hosting 2000 Account 2005-03-18 14:54:01 UTC 
Created attachment 112126 [details]
The fix
Comment 2 John W. Linville 2005-03-21 20:43:01 UTC 
I have incorporated the patch in the test kernels available here:

   http://people.redhat.com/linville/kernels/rhel3/

Please give them a try and report the results.  Thanks!

P.S.  What purpose is served by sending a large udp-packet without a checksum? 
Just curious... :-)
Comment 3 Hosting 2000 Account 2005-03-22 09:03:52 UTC 
I could not find the sk98lin driver in the kernel package. Isn't it part of
kernel-unsupported?

Novell Border Manager for Windows obviously sends udp packets without checksum,
which our router with sk98lin drops.
Comment 4 John W. Linville 2005-03-22 15:58:14 UTC 
Right you are...I have included the unsupported rpms as well...they are
available at the same link as in comment 2.

Please give them a try and report the results.  Thanks!
Comment 5 Hosting 2000 Account 2005-03-23 07:51:02 UTC 
It works great. Thank you.
Comment 7 Ernie Petrides 2005-04-21 03:18:39 UTC 
A fix for this problem has just been committed to the RHEL3 U6
patch pool this evening (in kernel version 2.4.21-32.1.EL).
Comment 14 Red Hat Bugzilla 2005-09-28 14:51:33 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2005-663.html