[swg] RE: [openib-general] socket based connectionmodel for IBproposal -round 4

[Sean Hefty]

Yaron Haviv wrote:
> How about using ARP to get from IP to DGID+Partition
> Followed by an SIDR to map DGID+PKey+Service to QKey & QP
> 
> It is the same concept as CMA that first uses IP stack (ARP etc') to get
> to the remote end-point (in that case GID+PKey combination) followed by
> SA-PR and CM REQ, we just substitute the CM REQ with a SIDR REQ
> It may not solve all the cases but probably most of the practical ones 

This was my thought as well.

> Anyway the packets will need to carry some header (since it's not a
> connected model), you can add more stuff in that header (e.g. can use
> IPoIB header as is which contains already the src/dst IP) 

I was assuming that each packet would need to carry some sort of header.

At this point, we may want to defer defining anything for UDP until there's a 
better understanding of what an application would want.  My guess is that such 
an application will need new APIs for posting sends based on UDP addressing.

- Sean