Hi Sean,
I attempted to use rsockets with ConnectX-EN adapters and the client
receives a "Connection refused" message. I debugged this a bit further
and see that the client is actually receiving an IB_CM_REJ_RECEIVED with
reason being 28 i.e. "Consumer Reject". Could this be because of the
difference in how GIDs are obtained in the case of RoCE? Have you
attempted rsockets on RoCE at all?
Incidentally this problem also highlights another issue we have
encountered previously. The only way to debug issues like this in RDMA
CM is to modify the kernel module. Currently there is no way we can turn
on (and off) debug and get insights into the connection set up process.
Are you open to considering patches to enhance debug with RDMA CM,
particularly during the address resolution and connection setup process.
That way it should not impact the performance during data transfer.
Thanks
Pradeep
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