[openib-general] [PATCH 3/5 v3] 2.6.20 rdma/cma: allow early transition to RTS to handle lost CM messages

[Michael S. Tsirkin]

> > Just to clarify this point - what connecton messages can be lost?
> > E.g. if the passive side does not get an RTU for a while, it will
> > retry the REP, won't it?  Diagram 12.9.6 seems to indicate so:
> > from REP Sent we should go to RTU timeout, Send REP and back to REP Sent.
> > Is this implemented?
> 
> REP retries are already implemented in the ib_cm.  This handles the case where 
> the RTU is repeatedly lost, but data is still received on the connection.

Yes, I've even observed this with SDP, but I'm not sure why this
happens. It seems that MADs are sometimes lost even in back to back
configurations. Any idea why?

-- 
MST