[openib-general] [RFC] IB address translation using ARP

[Hal Rosenstock]

On Fri, 2005-10-07 at 17:02, Sean Hefty wrote:
> Hal Rosenstock wrote:
> >>IP is connectionless, so I'm not sure how to relate from IP to the RDMA CM. 
> > 
> > 
> > IP is connectionless but has been implemented on top of connection
> > oriented link layers which may gateway to other connection oriented link
> > layers or non connection oriented link layers. I think it is analagous
> > to that.
> 
> I didn't think that IP was even being run in this case.  Aren't we talking about 
> an application level gateway?

Yes.

> If the RDMA CM ran a protocol that ensured that data sent from the source reached the actual destination, then this would make 
> more sense to me.  But the protocol is coming from the client.

Wouldn't the gateway/host reject or drop the connection if it couldn't
do what was required ?
 
> I just don't think that the RDMA CM should connect to a gateway under the 
> assumption that a client is running a protocol that operates this way.  If the 
> source and destination were both running iWarp, then wouldn't a connection be 
> established to the actual destination, and not a gateway?

Would it shortcut the connection across IP subnets or go through a
gateway in that case ?

-- Hal