[openib-general] troubles with IPoIB

[Roland Dreier]

    Josh> Is the 'called: id [big-fat-negative-number]' supposed to be
    Josh> there?

Yes, that's fine (it's just an artifact of the fact that receive work
request IDs get (1<<31) ORed in).  I should clean up that debug
message though.

The debug messages show IPoIB apparently sending an ARP packet and
seeing it appear on the broadcast group (looped back locally).

    Josh> Is there a utility (such as vping) to test even
    Josh> basic IB connectivity?

Unfortunately not yet.

    Josh> How can I get IPoIB to work?

What subnet manager are you using?  If you mount ipoib_debugfs
somewhere (say /ipoib_debugfs), what do you get from

    cat /ipoib_debugfs/ib0_mcg

Do /sys/class/net/ib0/statistics/rx_packets and/or "tcpdump -i ib0"
show anything on the other nodes when you try to ping or something?

Thanks,
  Roland