[openib-general] MAD queuing model

[Sean Hefty]

Does anyone have any thoughts about where MAD queuing should occur?  If a work request for a MAD cannot be immediately posted to a QP, should a call to ib_mad_post_send fail, or should the work request be queued for later?  Along this same line, should a MAD requiring RMPP post multiple work requests or post a single request at a time, until it completes?  (By completion, I mean the work request only, and not an RMPP response.)

My initial thoughts are to queue the MADs in the access layer.  But timers would not start until the work request had actually been posted.

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