On Mon, 23 Jan 2006 20:57:10 +0100 Carl-Daniel Hailfinger <[EMAIL PROTECTED]> wrote:
> Stephen Hemminger schrieb: > > You might try adjusting the interrupt coalescing parameters with > > ethtool -C eth0 ... > > But I can't give you hard guidelines as to what would make it better. > > > > I have a debug patch, but it needs work still. > > I don't care whether that debug patch will freeze the box or perform > other random funnies. All the debugging printks I added to the driver > did not trigger and I'd try anything. So yes, I'm desparate. > > Does the sk98lin driver have any code for such problems? There are several differences that the sk98lin driver has. * It programs some parts of the chip differently. But most of those are wrong. I started copying it, but where it was wrong I didn't copy the mistakes. * Sk98lin does NAPI wrong. It has interrupts disabled and runs packets through soft irq twice. * Sk98lin does it's own buggy rx checksum validation. * Sk98lin does not do VLAN * Sk98lin programs PCI-Ex for 2K transfers, but that causes data corruption The one that probably is saving you with sk98lin, is it has a watchdog routine that tries to work around all the possible driver hangs. I prefer to find an fix these hangs, because a watchdog routine like that just masks the problem and introduces a bunch of SMP race conditions which the sk98lin author either didn't see or ignored. -- Stephen Hemminger <[EMAIL PROTECTED]> OSDL http://developer.osdl.org/~shemminger - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
