[ofa-general] [PATCH] rds: use separate ports for TCP and IB

[Jon Mason]

On Thu, May 29, 2008 at 04:11:09PM -0700, Roland Dreier wrote:
>  > Currently, RDS will bind to a single port during bring up of both the IB and TCP
>  > sub-modules.  This binding of 2 different processes to a single port causes a
>  > port space collision to devices which are aware of both (e.g., iWARP).  This
>  > prevents iWARP devices from working with RDS if both TCP and IB are compiled in.
> 
> Of course nothing prevents another hapless application from trying to
> use port 18635 with TCP...

Yes, but that potential problem was already there.  I suppose in the long run RDS
should try to get IANA to give a reserved port (assuming that the RDS of ports 1540
and 1541 is a different RDS).

> Not really much we can do about the general port space collision problem
> unless and until the network stack guys are willing to cooperate though.

While I agree it is a necessity, I don't think I want to be the one to start that fight
again.  Perhaps if/when RDS is merged with mainline.

>  - R.