[ewg] Issue with IPoIB-CM being enabled at boot

[Jeremy Brown]

I've installed OFED 1.2 (GA) on an Opteron system with SLES 10 installed
and a QLogic QHT7140 (HTX-connected InfiniPath card). The contents
of /etc/infiniband/openib.conf are the defaults created by the OFED
install script, which include enabling IPoIB-CM, and they look good to
me. I've attached the file.

When I boot up, /sys/class/net/ib0/mode shows "datagram," however, and
the MTU is set to 2044. The performance characteristics are such that
I'm sure it really is in datagram mode. When I manually change it to
"connected" mode, and set MTU to 65520, throughput increases
dramatically, as expected, so I'm sure it really is going into connected
mode.

Does anybody else have a problem with IPoIB coming up in datagram mode,
when you've configured it for connected mode (in openib.conf)? Can
anybody see what I've done wrong here?

Thanks a lot!

Jeremy Brown
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# Start HCA driver upon boot
ONBOOT=yes

# Load UCM module
UCM_LOAD=no

# Load RDMA_CM module
RDMA_CM_LOAD=yes

# Load RDMA_UCM module
RDMA_UCM_LOAD=yes

# Increase ib_mad thread priority
RENICE_IB_MAD=no

# Load MTHCA
MTHCA_LOAD=yes

# Load IPATH
IPATH_LOAD=yes

# Load IPoIB
IPOIB_LOAD=yes

# Enable IPoIB Connected Mode
SET_IPOIB_CM=yes

# Load SDP module
SDP_LOAD=yes

# Load SRP module
SRP_LOAD=no

# Load ISER module
ISER_LOAD=no

# Load RDS module
RDS_LOAD=no

# Load VNIC module
VNIC_LOAD=yes

# Enable SRP High Availability daemon
SRPHA_ENABLE=no