K 10
svn:author
V 8
melifaro
K 8
svn:date
V 27
2020-11-29T13:27:24.977366Z
K 7
svn:log
V 516
Add tracking for rib/nhops/nhgrp objects and provide cumulative number accessors.

The resulting KPI can be used by routing table consumers to estimate the required
 scale for route table export.

* Add tracking for rib routes
* Add accessors for number of nexthops/nexthop objects
* Simplify rib_unsubscribe: store rnh we're attached to instead of requiring it up
 again on destruction. This helps in the cases when rnh is not linked yet/already unlinked.

Differential Revision:	https://reviews.freebsd.org/D27404

END