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From: The Anarcat <anarcat@anarcat.dyndns.org>
Reply-To: The Anarcat <anarcat@anarcat.dyndns.org>
To: FreeBSD-gnats-submit@freebsd.org
Cc: anarcat@anarcat.dyndns.org
Subject: heavy collision rate hangs vr network interface
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>Number:         35640
>Category:       kern
>Synopsis:       heavy collision rate hangs vr network interface
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    silby
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Mar 07 11:00:02 PST 2002
>Closed-Date:    Sun May 19 18:20:52 PDT 2002
>Last-Modified:  Sun May 19 18:20:52 PDT 2002
>Originator:     The Anarcat
>Release:        FreeBSD 4.5-STABLE i386
>Organization:
Nada, Inc
>Environment:
System: FreeBSD lenny.anarcat.dyndns.org 4.5-STABLE FreeBSD 4.5-STABLE #0: Mon Mar 4 12:16:06 EST 2002 anarcat@lenny.anarcat.dyndns.org:/usr/src/sys/compile/LENNY i386

10 baseT/UTP network, 2 machines connected through a 4 port Hub.

>Description:

I can reproducibly hang my 4.5-STABLE server when FTP uploading at
around 1Mb/s.

The collision rate is extremely high for some reason,

            input        (Total)           output
   packets  errs      bytes    packets  errs      bytes colls
       698     0    1053348        512     0      30756   417

After around 30 seconds of full use of the bandwidth, all network
connections hang, and I have to reset the interface (ifconfig down/up)
in order to bring back network capabilities.

>How-To-Repeat:

More info on the hardware:

Server side:
vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0x6600-0x66ff mem 0xe1001000-0xe10010ff irq 10 at device 11.0 on pci0

Client side:

rl0: <D-Link DFE-530TX+ 10/100BaseTX> port 0x9400-0x94ff mem 0xd6800000-0xd68000ff irq 9 at device 9.0 on pci0

Base system ftp clients and servers.

Simply ftp upload around 15-20 Mbytes of data.

>Fix:

To temporarly unhang the machine, ifconfig down/up the guilty interface.

Unknown long-term fix.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: silby 
State-Changed-When: Thu Mar 7 15:09:07 PST 2002 
State-Changed-Why:  
Update the client system to today's -stable (rlphy.c, specifically.) 
There was a fix committed to the rl driver which makes it behave 
better on 10baseT networks. 

Of course, that doesn't explain the vr system locking up, but it 
may be a good enough solution for you. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=35640 
State-Changed-From-To: feedback->open 
State-Changed-By: silby 
State-Changed-When: Thu Mar 7 22:28:11 PST 2002 
State-Changed-Why:  
The Anarcat reports that even with the rl fix, his network 
situation has not changed.  It looks like an investigation 
of the vr driver is in order. 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=35640 

From: The Anarcat <anarcat@anarcat.dyndns.org>
To: freebsd-gnats-submit@FreeBSD.org
Cc:  
Subject: Re: kern/35640: heavy collision rate hangs vr network interface
Date: Fri, 08 Mar 2002 15:40:45 -0500

 It seems this PR is a duplicate of several others, and that there is a 
 solution for the hanging problems of the vr.
 
 Please see:
 
 kern/26613: ethernet vr0 hangs
 kern/17965: vr (MII-bus version in 4.0 ONLY) driver lock-up problems
 kern/12966: receiver lockups in vr0 driver
 
 pr kern/17965 features a fix that should be applied. I will test it in a 
 few minutes.
 

From: "Internet Partners Inc. Support" <support@ipinc.net>
To: <freebsd-gnats-submit@FreeBSD.org>, <anarcat@anarcat.dyndns.org>
Cc:  
Subject: Re: kern/35640: heavy collision rate hangs vr network interface
Date: Wed, 17 Apr 2002 18:01:44 -0700

 please also reference PR  kern/35720  same problem, patch
 included.
Responsible-Changed-From-To: freebsd-bugs->wpaul 
Responsible-Changed-By: dougb 
Responsible-Changed-When: Thu Apr 25 21:49:57 PDT 2002 
Responsible-Changed-Why:  

Bill already has some of the other vr pr's. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=35640 
Responsible-Changed-From-To: wpaul->silby 
Responsible-Changed-By: silby 
Responsible-Changed-When: Fri May 17 10:43:03 PDT 2002 
Responsible-Changed-Why:  
I'm taking all the vr-related PRs for now. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=35640 
State-Changed-From-To: open->closed 
State-Changed-By: silby 
State-Changed-When: Sun May 19 18:20:03 PDT 2002 
State-Changed-Why:  
A fix to automatically reset the network card when this condition 
occurs has been committed. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=35640 
>Unformatted:
