[openib-general] Immediate data question

[Roland Dreier]

    Changqing> 	Does this pending SEND_WITH_IMM message affect the
    Changqing> performance of the receiver process ? Is this message
    Changqing> buffered in the receiver's HCA, or the sender retry and
    Changqing> get RNR ack until receiver posts a receive ?

If no receive is pending, then the responder sends an RNR NAK and the
sender will wait for the RNR timeout and retry, etc.

 - R.