[openib-general] gen2 dev branch

[Roland Dreier]

    Yaron> we need however to look at the redirect messages that run
    Yaron> on QP1, when an active side sends a MAD and get a response
    Yaron> that the MAD should be redirected, the MAD should be resent
    Yaron> to the new QP, in the proposed implementation the GSI layer
    Yaron> resends the MAD to the new QP when such redirect message
    Yaron> arrives without involving the App, otherwise any consumer
    Yaron> should have provided exactly the same functionality and its
    Yaron> better to have it be transparent to the consumers.

If redirect handling is done completely within the GSI layer, it seems
the consumer continue to send requests to the original destination and
have every request redirected.  It might be more efficient to expose
the fact of redirection to the consumer so that future requests can be
sent to the new destination.

 - Roland