On Mon, Feb 19, 2007 at 05:29:20PM -0500, Lennart Sorensen wrote: > I just noticed, it seems almost all these problems occour right at the > start of transfers when the tcp window size is still being worked out > for the connection speed, and I am seeing the error count go up in > ifconfig for the port when it happens too. Is it possible for an error > to get flagged in a receive descriptor without the owner bit being > updated?
It seems the problem actually occours when the receive descriptor ring is full. This seems to generate one (or sometimes more) descriptors in the ring which claim to be owned by the MAC, but at the head of the receive ring as far as the driver is concerned. I see some note in the driver about an SP3G chipset sometimes causing this. How would one identify this and clear such descriptors out of the way? Getting stuck until the next time the MAC gets around to the descriptor and overwrites it is not good, since it causes delays, and out of order packets. -- Len Sorensen - 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
