[openib-general] [PATCH] RFC libibverbs - support provider response data in reg_mr

[Roland Dreier]

    Steve> Pass back provider-specific meta data for user mr
    Steve> registration. The infrastructure is there to do this in the
    Steve> kernel, but not in the libibverbs cmd interface.

    Steve> This is (hopefully) a short term requirement for the driver
    Steve> I'm working on, but if it has utility for others, we should
    Steve> add it.  I guess the downside is it impacts all the libs...

I guess this is OK if it's needed, but can you add a preprocessor
define (a la what I did for ibv_cmd_resize_cq) so that low-level
driver plugins can retain source-level compatibility with both old and
new libibverbs?

 - R.