[openib-general] IPoIB fails attaching QP to mcast group

[Or Gerlitz]

Michael, Roland,

Any idea what can cause the below, what actually is the error i am running into here?

ib0: join completion for ff12:401b:ffff:0000:0000:0000:ffff:ffff (status 0)
ib_mthca 0000:02:00.0: modify QP 3->3 returned status 10.
ib0: failed to modify QP, ret = -22
ib0: couldn't attach QP to multicast group ff12:401b:ffff:0000:0000:0000:ffff:ffff

This is kernel.org system (netdev git) with PCI X HCA, some details below.

Or.

# uname -a

Linux dill 2.6.18-rc4-gdac2b3d3-dirty #2 SMP Thu Aug 24 13:21:58 IDT 2006 x86_64 x86_64 x86_64 GNU/Linux

# cat /sys/class/infiniband/mthca0/*

3.4.0
MT23108
a1
0008:f104:0396:51dc
1: CA
0008:f104:0396:51df

# cat /sys/module/ib_mthca/parameters/*
0
0
0
0
0