[ewg] rdma/cm: disallow loopback address for iwarp devices

[Pradeep Satyanarayana]

Steve Wise wrote:
> Sean, can you try openmpi?  It fails for me, and yet ucmatose succeeds. 
> I don't understand the difference yet...
> 
> 
> Sean Hefty wrote:
>>> On my OFED 1.4.1 RHEL4u6 systems, rdma_bind_addr() fails when
>>> attempting to
>>> bind to 127.0.0.1 per the email I sent Friday:
>>>
>>>    http://www.spinics.net/lists/linux-rdma/msg02568.html
>>>     
>>
>> This is what I see over IB on 2.6.26, with a couple extra prints added to
>> cmatose:
>>
>> cst-lin1:/home/mshefty/librdmacm# examples/ucmatose -b 127.0.0.1
>> cmatose: starting server
>> src addr 0x100007f
>> rdma_bind_addr: 0
>>
>> so we're missing something else.
>>

Hi Steve,

I am attempting to duplicate the problem that you reported with today's OFED build (on Sles11, if that matters). I have rarely
used openMPI, so suggestions would be helpful. Here is what I see:

elm3b199:/usr/lib # /usr/mpi/gcc/openmpi-1.4.1/bin/mpirun -np 2 --bynode --mca btl_openib_cpc_include rdmacm ring
--------------------------------------------------------------------------
mpirun was unable to launch the specified application as it could not find an executable:

Executable: ring
Node: elm3b199

while attempting to start process rank 0.
--------------------------------------------------------------------------
elm3b199:/usr/lib #

Incidentally tvflash did not build (this is a ppc64 machine).

Thanks
Pradeep