[openib-general] [PATCH 0/4] SA path record caching

[Sean Hefty]

The following patch series adds caching of path records with the local system.
I divided the changes up into 4 patches to make the review easier.  The patches
are arranged as follows:

1. Add a new API to ib_sa.h to pack/unpack SA attributes.
2. Create a fast indexing service.
3. Create a local SA database.
4. Modify the CMA to use the local SA database.

There are some additional optimizations that can be added to these changes, but
I would prefer to add them incrementally to these changes.  This includes
additional optimizations to the fast indexing service to help reduce its memory
footprint, registering the local SA database to receive SA events, and failing
over from the local SA database to using SA queries.

Signed-off-by: Sean Hefty <sean.hefty at intel.com>