[openib-general] Kernel assertion

[Roland Dreier]

OK, I checked in a fix for this.  I'm actually not sure if it was
really a bug in IPoIB or a glitch in the network stack (see my recent
post to netdev, cc'ed to openib-general, about 'LLTX and
netif_stop_queue') but in any case I made the messages go away in my
setup.

By the way, it might be interesting to see if increasing
IPOIB_RX_RING_SIZE and/or IPOIB_TX_RING_SIZE in ipoib.h had any effect
on your performance (make sure to keep them powers of 2).

Thanks,
  Roland