[ofa-general] Re: IPOIB CM (NOSRQ) extension

[Michael S. Tsirkin]

> Quoting Michael S. Tsirkin <mst at dev.mellanox.co.il>:
> Subject: Re: IPOIB CM (NOSRQ) extension
> 
> > Quoting Pradeep Satyanarayana <pradeeps at linux.vnet.ibm.com>:
> > Subject: Re: IPOIB CM (NOSRQ) extension
> > 
> > Michael S. Tsirkin wrote:
> > >>Quoting Pradeep Satyanarayana <pradeeps at linux.vnet.ibm.com>:
> > >>Subject: IPOIB CM (NOSRQ) extension
> > >>
> > >>This patch handles the corner case of running out of RC QPs. In that
> > >>case it switches to UD mode. This patch can be used both by NOSRQ and
> > >>SRQ code.
> > >>
> > >>Signed-off-by: Pradeep Satyanarayana <pradeeps at linux.vnet.ibm.com>
> > >
> > >You don't provide any way to retry going back to connected mode,
> > >after a failure, which is really intermittent by nature. That's pretty bad.
> > 
> > This node switched to datagram mode, because the passive side was
> > under a resource crunch (no RC QPs). And, the user is indeed alerted
> > about this condition. So, yes we do not attempt to go back to connected
> > mode.
> 
> Need to retry switching to datagram mode after a while.

Sorry, that should have been "switching to connected mode".

-- 
MST