Re: if_fwe and interrupts weirdness in current (maybe cardbus related ?)

Le (On) Sat, Jan 04, 2003 at 07:41:28PM +0900, Hidetoshi Shimokawa ecrivit (wrote):
> > Everything worked fine (at least, I thought it did), even in bridge mode (on the
> > workstation) !
> > 
> > After a few minutes, communication became unidirectional: the laptop was able to
> > receive data from the WS, but the WS seemed not to receive anything from the
> > laptop (tcpdump showed that the laptop correctly answered to ARP requests, but
> > the WS never received them).
> > 
> > The fix is just to plug out and in again the IEEE1394 cable.
> 
> I have reproduced similar problem. Did you use NFS when the problem
> occured? I think the laptop's TX buffer is stalled. 

Humm, yes, but even without NFS, I remember it occured too.

> > firewire0: start AT DMA status=0
> > firewire0: unrecoverable error
> 
> NFS seems to generate mbuf with zero data size and this stops
> some OHCI chips with unrecoverable error.
> I have committed a fix to -current. Could you copy -current's
> /sys/dev/firewire and /sys/modules/firewire then test it?

I'll do it as soon as I can ! (the laptop had a 3 weeks longevity...)

Cheers,

-- 
Sameh

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