First patch adds a rudimentary vrf test case. Remaining patches split large rtnl_fill_ifinfo into smaller chunks to better see which parts
1. require rtnl 2. do not require it at all 3. rely on rtnl locking now but could be converted I removed all the ASSERT_RTNL spots that v1 and v2 added, i will keep that back in my working branch since those are just 'todo' markers for myself. Eric Dumazet pointed out that qdiscs are now freed directly without call_rcu so I dropped the patch that made this assumption from the series. As the remaining patches did not see major changes vs. v2 I retained all reviewed/acked-by tags from David Ahern.
