[eepro100] Re: 82559 and receiver lock-up bug.
Wed, 05 Jul 2000 11:06:50 +0100
> Has any one ever hit the receiver lock-up bug?
yup, experiencing it quite a lot at the moment :(
> A multicast command to the adapter is a workaround to this
> bug. If you are doing a rcp of a very big file (> 1 GB file)
> does this work around help? My driver locked up many times
> during a large file transfer.
> Any input on what causes this bug to appear is greatly
I've got a user-space driver talking to the eepro100 board (82557b,
82558 flavoured boards), with flow-control on (any combination of
PHY based or transmit based flow-control).
If the board runs out of receive descriptors, the flow-control
packets tell the sender to stop sending, but when the boards gets
some more receive descriptors back, it doesn't start receiving again
as it should -- it just stops dead. :-(. Definitely undesirable.
Is there any way to detect that it's about to lock-up, before it
actually does ? In the usual fashion, the 82558 data-sheets aren't
very helpful. I'd rather not go for a time-out option, as this
will make the performance (throughput) suffer somewhat.