[ofa-general] tcp/rdma port unification patch in librdmacm

Or Gerlitz ogerlitz at voltaire.com
Wed Mar 11 00:48:37 PDT 2009


Steve Wise wrote:
> It seems like kernel RDMA protocols are all getting IANA-assigned port 
> numbers that alleviates the need for TCP/RDMA port unification.  
> NFSRDMA and RDS are two.  But user applications like mvapich2 and 
> other mpis often let the stack choose a local port number on-which to 
> bind/listen.
Hi Steve,

You have mentioned the listeners, but what about the ports used for the 
connection itself? isn't it correct that when the TOE stack accepts the 
rNFS connection request to port X - still a different port Y would be 
used for the connection itself ? but if the Linux TCP stack would have 
(say) iperf bind to port Y then you are again in troubles - am I missing 
anything here?

Or.





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