K 10
svn:author
V 7
rwatson
K 8
svn:date
V 27
2009-06-21T19:30:33.182633Z
K 7
svn:log
V 458
Clean up common ifaddr management:

- Unify reference count and lock initialization in a single function,
  ifa_init().
- Move tear-down from a macro (IFAFREE) to a function ifa_free().
- Move reference count bump from a macro (IFAREF) to a function ifa_ref().
- Instead of using a u_int protected by a mutex to refcount(9) for
  reference count management.

The ifa_mtx is now used for exactly one ioctl, and possibly should be
removed.

MFC after:	3 weeks

END