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Date:      Fri, 10 May 2002 08:17:24 -0700 (PDT)
From:      Thomas Nyström <thn@saeab.se>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   kern/37929: hang of vr interface running at 100 MBit/full duples
Message-ID:  <200205101517.g4AFHOCC089249@www.freebsd.org>

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>Number:         37929
>Category:       kern
>Synopsis:       hang of vr interface running at 100 MBit/full duples
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 10 08:20:02 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Thomas Nyström
>Release:        4.5-RELEASE
>Organization:
Svensk Aktuell Elektronik AB
>Environment:
FreeBSD omar.int.saeab.se 4.5-RELEASE FreeBSD 4.5-RELEASE #18: Fri May 10 16:45:37 CEST 2002     root@omar.int.saeab.se:/usr/src/sys/compile/OMAR  i386

DFE-530TX, controller marked DL10030, identified as VR3043, Rhine I
Motherboard Mercury/Kobian MT133a with AMD Duron running at 900 MHz.
128 MB memory.

Network is build around a 100 MB switch (D-LINK DES-1008D) with my
computer placed on its own port. FTPserver also placed on its own port.
Very low other traffic on the network.

>Description:
When sending a large file with FTP the vr interface hangs.

I have tracked down the problem to the tx-part of the driver. The txstatus
given in the ring descriptor have the value 0x00008800 when this happens.
I have looked in the doc's for VIA Rhine chip and bit 0x800 is stated as
'reserved'. A fix by reinitialize the board when this bit is set seems
to wake up the board again but the problem occurs soon after.

I have also tried to turn off DMA for the disks, no success.

I have tried to the patch given in kern/35720 without success (doesn't
even seems to be called).

>How-To-Repeat:
Occurs every time I tries.
 
>Fix:
-

>Release-Note:
>Audit-Trail:
>Unformatted:

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