Alexander V. Chernikov 512e30ef9f Split arpresolve() into fast/slow path.
This change isolates the most common case (e.g. successful lookup)
  from more complicates scenarios. It also (tries to) make code
  more simple by avoiding retry: cycle.

The actual goal is to prepare code to the upcoming change that will
  allow LL address retrieval without acquiring LLE lock at all.

Reviewed by:		ae
Differential Revision:	https://reviews.freebsd.org/D3383
2015-08-16 12:23:58 +00:00
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