[openib-general] TCP/IP connection service over IB

[James Lentini]

sean> At a minimum, we need an assigned service ID to identifies a 
sean> TCP/IP connection service.  For simplicity of the 
sean> implementation, I would use an ID similar to that defined for 
sean> SDP:
sean> 
sean> 0x00 14 05 xx xx xx xx xx
sean> 
sean> I don't know that the SWG or IBTA needs to be involved defining 
sean> the protocol beyond assigning the service ID.

Standardizing the protocol will ensure interroperability. 

sean> The connection service can define service IDs as:
sean> 
sean> 0x00 14 05 00 00 00 dst port
sean> 
sean> And a private data format for the CM REQ:
sean> 
sean> version(8) | reserved(8) | src port (16)
sean> src ip (16)
sean> dst ip (16)
sean> user private data (56)		/* for version 1 */

Are the numbers in parens in bytes or bits? It looks like a mixture to 
me. 

sean> Other private data would be left unchanged, though if we wanted 
sean> to get more sophisticated, we could define REJ codes to indicate 
sean> bad addresses/version/etc.  Not surprisingly, this is exactly 
sean> what's implemented in the CMA and working today.

I agree. We should keep it simple.

sean> On a related note, it would be convenient if SDP were changed to 
sean> run over this protocol.

Agreed.