rtnetlink: introduce new RTA_ENCAP_TYPE and RTA_ENCAP attributes
rtnetlink: introduce new RTA_ENCAP_TYPE and RTA_ENCAP attributes

This patch introduces two new RTA attributes to attach encap
data to fib routes.

Example iproute2 command to attach mpls encap data to ipv4 routes

$ip route add 10.1.1.0/30 encap mpls 200 via inet 10.1.1.1 dev swp1

Signed-off-by: Roopa Prabhu <d3f6ba90004ada8c36186a20548ed980b7e493d1@cumulusnetworks.com>
Suggested-by: Eric W. Biederman <8a741aa8cbd77ebc4a56ddb528ce9fd15d42f034@xmission.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs