[openib-general] RE: [dat-discussions] round 2 - proposal for socket based connection model

[Sean Hefty]

Caitlin Bestler wrote:
> I believe it requires a CM protocol version change, or a "IP Address 
> Header present" bit.
>  
> Basically, userspace consumers can supply *any* 72 bytes of private data 
> currently.
> To maintain backwards compatability you need an authenticator that says 
> "this IP
> header data vouched for by privileged components on this end", and that 
> authenticator
> cannot be within the private data.

I believe that the solution is keep the CM protocol as is.  The CM private data 
should be completely controlled by the service.  The IB CM does not care if an 
IP address is in the private data or not.

My reading of the proposal is that it defines a private data format that a 
particular service may or may not use.

- Sean