ip: support UID range routing.

- Support adding, deleting and showing IP rules with UID ranges.
- Support querying per-UID routes via "ip route get uid <UID>".

UID range routing was added to net-next in 4fb7450683 ("Merge
branch 'uid-routing'")

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
2 files changed