[openib-general] Plans for libibverbs 1.0, 1.1 and beyond

[Caitlin Bestler]

Roland Dreier wrote:
>     Caitlin> This is an API question, not an implementation    
> Caitlin> question. 
> 
> No, it's not.  Unless I'm missing something, the API of
> libibverbs already has everything needed to support resizing QPs
> through the ibv_modify_qp() call.
> 
>  - R.

It has the syntax, but not enough semantics to properly
guide it's usage. If there were enough information you
would not need to see specific implementations to decide
whether or not to use it.

With the syntax alone a device implementer does not know
if a resize is an indication that it MAY reduce resource
allocations or that it MUST reduce resource usage. And
the application developer does not know which message
is being conveyed either, or if there is any assisntance
on enforced reduction of resource usage supported or not.