vcl: support set/get vrf attribute

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I011faa52939d44bdc90de69ad381dc1eea8c8eb3
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index e4e73e0..21853eb 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -161,6 +161,7 @@
   u32 attributes;		/**< see @ref vppcom_session_attr_t */
   int libc_epfd;
   u32 ckpair_index;
+  u32 vrf;
 
   u32 sndbuf_size;		// VPP-TBD: Hack until support setsockopt(SO_SNDBUF)
   u32 rcvbuf_size;		// VPP-TBD: Hack until support setsockopt(SO_RCVBUF)