[openib-general] RDMA connection and address translation API

[James Lentini]

On Wed, 24 Aug 2005, Sean Hefty wrote:

> I guess that I'd like to clarify what the operation of a connect 
> call would do.  Would it be responsible for modifying the QP?  If 
> so, could such a call also allocate the QP?  Note that I'm not 
> advocating either of these, just trying to determine what the 
> behavior of the API would be.

If the connect call succeeds in establishing a connection, the ULP's 
QP should be ready for posting work requests. This simplifies the ULP 
considerably.

The API should not create the QP. That would create race conditions 
for certain protocols. For example, consider a protocol in which the 
first message was a send from the server to the client. To properly 
implement such a protocol, the client must post a receive work request 
before initiating a connection.