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

[Michael S. Tsirkin]

> 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.

-- 
MST