Sean Hefty wrote:
When one calls to rdma_get_cm_event, he gets a structure of the
rdma_cm_event.
In this structure there are 2 attributes which i want to discuss about:
* private_data
* private_data_len
It seems that when one side send to the other private data, the
private data is correct
(i mean that the attribute private data points to a memory buffer with
the expected data)
but the private_data_len has a fixed size (depend on the ucma function
which was called).
1) Is this is the expected behavior?
Yes - there's no way for the receiving side of an IB CM message to know
how many bytes of private data are valid in the REQ, REP, etc.
2) can you please add entry to the man pages of this function to
clarify this expected
content of those attributes?
I will update the man pages. Thanks.
Note that the private data length _is_ correct for iwarp. So the man
pages should mention that this is an IB-only issue maybe? And maybe
indicate that transport-independent applications should not rely on the
length...
Steve.
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