Stephen Hemminger <shemminger@osdl.org> :
[...]
> > +	u32 eor = le32_to_cpu(desc->opts1) & ~RingEnd;
                                             ^
Oops.

Updated patch against plain 2.6.11 below (NAPI is strongly
suggested, no need to disable rx_copybreak). The patch has
been tested on a 100Mbps ethernet but it does not want to
crash. I'll hack the testbed and see tomorrow how things
behave on Gb.

The status and received packets indication in the Rx descriptor ring
are not correctly reset when a descriptor is recycled.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>