[openib-general] Re: iWARP emulation protocol

[Caitlin Bestler]

> -----Original Message-----
> From: Roland Dreier
> Sent: Tuesday, October 18, 2005 11:41 AM
> To: Kanevsky, Arkady
> Subject: [openib-general] Re: iWARP emulation protocol
> 
>     Arkady> uDAPL users.
> 
> 
> 2) Are there real users or is this a generic uDAPL API thing?
> 

uDAPL vs. kDAPL is irrelevant here. The user or Kernel Consumer
making the connection does not know whether their peer is running
in user or kernel, nor should they.

Every discussion of reducing the guaranteed private data size
in DAPL has produced adverse reactions from application developers.
They're either very good actors or were working on actual applications.

An additional space preserving option that Arkady did not mention is
limiting the IP alias service to IPv4 addresses. Anyone who really
wants IPv6 addresses can get their SM to assign IPv6 compatible GIDs.
Of course the flat IPv6 option is far simpler, and probably should be
used unless a specific application is identified where those extra
96 bits makes the difference between making the private data be
rewritten or left as is.