MPLS Mcast

 1 - interface-DPO
        Used in the Data-plane to change a packet's input interface
 2 - MPLS multicast FIB entry
        Same as a unicast entry but it links to a replicate not a load-balance DPO
 3 - Multicast MPLS tunnel
        Update MPLS tunnels to use a FIB path-list to describe the endpoint[s]. Use the path-list to generate the forwarding chain (DPOs) to link to .
 4 - Resolve a path via a local label (of an mLDP LSP)
        For IP multicast entries to use an LSP in the replication list, we need to decribe the 'resolve-via-label' where the label is that of a multicast LSP.
 5 - MPLS disposition path sets RPF-ID
        For a interface-less LSP (i.e. mLDP not RSVP-TE) at the tail of the LSP we still need to perform an RPF check. An MPLS disposition DPO performs the MPLS pop validation checks and sets the RPF-ID in the packet.
 6 - RPF check with per-entry RPF-ID
       An RPF-ID is used instead of a real interface SW if index in the case the IP traffic arrives from an LSP that does not have an associated interface.

Change-Id: Ib92e177be919147bafeb599729abf3d1abc2f4b3
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/test/vpp_mpls_tunnel_interface.py b/test/vpp_mpls_tunnel_interface.py
new file mode 100644
index 00000000000..f200157444b
--- /dev/null
+++ b/test/vpp_mpls_tunnel_interface.py
@@ -0,0 +1,46 @@
+
+from vpp_interface import VppInterface
+from vpp_ip_route import VppRoutePath
+import socket
+
+
+class VppMPLSTunnelInterface(VppInterface):
+    """
+    VPP MPLS Tunnel interface
+    """
+
+    def __init__(self, test, paths, is_multicast=0):
+        """ Create MPLS Tunnel interface """
+        self._sw_if_index = 0
+        super(VppMPLSTunnelInterface, self).__init__(test)
+        self._test = test
+        self.t_paths = paths
+        self.is_multicast = is_multicast
+
+    def add_vpp_config(self):
+        self._sw_if_index = 0xffffffff
+        for path in self.t_paths:
+            reply = self.test.vapi.mpls_tunnel_add_del(
+                self._sw_if_index,
+                1,  # IPv4 next-hop
+                path.nh_addr,
+                path.nh_itf,
+                path.nh_table_id,
+                path.weight,
+                next_hop_out_label_stack=path.nh_labels,
+                next_hop_n_out_labels=len(path.nh_labels),
+                is_multicast=self.is_multicast)
+            self._sw_if_index = reply.sw_if_index
+
+    def remove_vpp_config(self):
+        for path in self.t_paths:
+            reply = self.test.vapi.mpls_tunnel_add_del(
+                self.sw_if_index,
+                1,  # IPv4 next-hop
+                path.nh_addr,
+                path.nh_itf,
+                path.nh_table_id,
+                path.weight,
+                next_hop_out_label_stack=path.nh_labels,
+                next_hop_n_out_labels=len(path.nh_labels),
+                is_add=0)