[openib-general] IPoIB still not working

[Hal Rosenstock]

[You wrote:]
> MGID....................0xff12401bffff0000 : 0x0000000000000016
> [1102546997:000053389][18007] -> osm_mcmr_rcv_join_mgrp: ERR 1B11:
method = SubnAdmSet,scope_state = 0x1, component mask =
0x0000000000010083, expected comp mask = 0x00000000000130c7.

MGID 0xff12401bffff0000 : 0x0000000000000016 corresponds to 
224.0.0.22 (IGMP). Only Version 3 Reports are sent with an 
IP destination address of 224.0.0.22, to which all IGMPv3-capable 
multicast routers listen.

The OpenIB stack is joining this group (as it is a end node)
rather than attempting to creating this group (hence the
component masks). It is joining as a full rather than send 
only member due to a limitation with some SMs not supporting
send only (or non member) joins. Even if that were supported
by the SM, if the group were not created first, the send only
join would fail. It makes no sense to send when no one is listening
so the fact that it does not join is a benign error (ignore the
message). The code retries on the next send to this group anyhow.

It takes a multicast router which would be listening to IGMP
to create the group. Do you have one configured on your subnet ?

-- Hal