Stephen Hemminger wrote: > I can reproduce the problem under load with only a single port on 2.6.23. > I haven't been able to reproduce it on 2.6.24-rc2 (latest) but that maybe > because of either insufficient stress or another bug fix correcting the > problem. There is an issue with Yukon XL updating the receive status index > before updating the receive status structure, that is now fixed in 2.6.24. > The fix is: > > commit ab5adecb2d02f3688719dfb5936a82833fcc3955 > Author: Stephen Hemminger <[EMAIL PROTECTED]> > Date: Mon Nov 5 15:52:09 2007 -0800 > > sky2: status ring race fix > > The D-Link PCI-X board (and maybe others) can lie about status > ring entries. It seems it will update the register for last status > index before completing the DMA for the ring entry. To avoid reading > stale data, zap the old entry and check. > > Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]> > Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]> The kernel I tested (2.6.24-rc2-git3) has this patch in it already. Perhaps that is why the problem happens less frequently with that kernel, but it didn't fix it entirely.
Do you want the test program I am using? It is a pretty basic send()/recv() program, ~650 lines of C. Tony - 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
