Merge branch 'net-smc-add-event-based-framework-for-LLC-msgs'

Karsten Graul says:

====================
net/smc: add event-based framework for LLC msgs

These patches are the next step towards SMC-R link failover support. They add
a new framework to handle Link Layer Control (LLC) messages and adapt the
existing code to use the new framework.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>