The dpipe code accesses internal router data structures and acquires
RTNL to protect against their changes. Subsequent patches will remove
reliance on RTNL and introduce a dedicated lock to protect router data
structures.

Publish the router struct to internal users such as the dpipe, so that
they could acquire it instead of RTNL.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>