0f26c5a013
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>
47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
|
|
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)
|