Thanks for clarifying that, Sean.
Cheers,
Steve.
Sean Hefty wrote:
Steve Wooding wrote:
I've just starting looking into IB connection establishment and I was
wondering what the ib_cm_init_qp_attr() function actually does.
Studying the MindShare IB book, it talks about exchanging the QPNs,
pSNs etc., via the REQ and REP messages. However, looking at your
cmpost.c example, I see, for exmaple, that in the req handler the
event containing the REQ message is never actually used when modyfing
the QP to RTR. The ib_cm_init_qp_attr() function is used instead.
Does the info in the REQ message get read in kernel space?
The kernel CM stores the information used in the establishment of a
connection. It then formats the QP attribute structure for the user.
This avoids every app from having to store these same values and
format the QP attribute structure.
- Sean
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