[openib-general] [CM] what happen if the path in the REQ packet (primary or alternate) is not reversible?

[dotanb at dev.mellanox.co.il]

> Dotan Barak wrote:
>> What should happen in one tries to connect a QPs using a path  (primary
>> or alternate) which is not reversible?
>
> It wouldn't work.  Is this something that someone is seeing in practice?
>
Not as much as i know ...

The reason is that today there aren't many (any?) heterogeneous clusters
with SDR and DDR nodes, but we need to be prepared ..

I think that if the CM doesn't support non reversible paths, at least it
should fail to send the REQ in order to let the user understand that there
is a problem ...

thanks
Dotan