[ofa-general] Oddities with RDMA CM private data

[Olaf Kirch]

I looked into the private_data chunk being exchanged during rdma_cm
connection setup today, and there's something odd. I'm sending 8 bytes
of data, but in the event handlers I get sizes such as 56, and 196.
I haven't tracked it down, but my first suspicion would be that the
code in cma.c adds its own private data, but forgets to decrement
the data_len fields prior to calling the ULP event handler.

Am I misunderstanding the semantics of private_data_len?

Olaf
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