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Subjecttulip driver problem
I mentioned this before in l-k in conjunction with a UP-flu report,
but I suspect it got lost in the noise. I may have discovered
a bug in the tulip driver in at least 2.1.127 - 2.1.129.
Under somewhat heavy load, the driver will either stop trasnmitting
or stop recieving. This is apparently similar to a previously
reported problems with the eepro drivers.

I can easily recreate the problem by running...

find /usr -type f -exec wc {} \;
while ping flooding the system. I have not tried this on kernel
version earlier then 2.1.127..

Boot messages, tulip driver is *not* a module.

tulip.c:v0.83 10/19/97 becker@cesdis.gsfc.nasa.gov
eth0: Digital DS21041 Tulip at 0x6100, 21041 mode, 00 c0 f0 21 72 0b, IRQ 9.
eth0:21041 Media information at 30, default media 0800 (Autosense).
eth0: 21041 media 00 (10baseT), csr13 0004 csr14 0000 csr15 0000.
eth0: 21041 media 00 (10baseT), csr13 0000 csr14 0000 csr15 0000.
Then I get the following errors (if transmit stops working) while
doing the ping flood and the above mentioned find.

eth0: 21041 transmit timed out, status fc660000, CSR12 000001c8, CSR13 ffffef05, CSR14 ffffff3f, resetting...
eth0: 21041 transmit timed out, status fc660010, CSR12 000052c8, CSR13 ffffef09, CSR14 fffff7fd, resetting...
eth0: 21041 transmit timed out, status fc660010, CSR12 000000c8, CSR13 ffffef05, CSR14 ffffff3f, resetting...
eth0: 21041 transmit timed out, status fc660010, CSR12 000050c8, CSR13 ffffef09, CSR14 fffff7fd, resetting...
eth0: 21041 transmit timed out, status fc660010, CSR12 000000c8, CSR13 ffffef05, CSR14 ffffff3f, resetting...
eth0: 21041 media switched to 10baseT.
eth0: 21041 transmit timed out, status fc660010, CSR12 000000c8, CSR13 ffffef05, CSR14 ffffff3f, resetting...
eth0: 21041 transmit timed out, status fc660010, CSR12 000050c8, CSR13 ffffef09, CSR14 fffff7fd, resetting...
ifconfig eth0 down; ifconfig eth0 up
fixes the problem.

If receive stops working, but transmit is still ok, I get no error messages.

System is a UP 200MHz K6, all SCSI, Kingston KNE40T tulip based
ethernet card.

Jim Bauer, jfbauer@home.com

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