MPLS Unifom mode

- support both pipe and uniform modes for all MPLS LSP
- all API programming for output-labels requires that the mode (and associated data) is specificed
   - API changes in MPLS, BIER and IP are involved
- new DPO [sub] types for MPLS labels to handle the two modes.

Change-Id: I87b76401e996f10dfbdbe4552ff6b19af958783c
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 26 insertions, 3 deletions

diff --git a/test/vpp_bier.py b/test/vpp_bier.py
index ef9a9ab75ec..7566b1f95ab 100644
--- a/test/vpp_bier.py
+++ b/test/vpp_bier.py
@@ -4,7 +4,7 @@
 
 import socket
 from vpp_object import VppObject
-from vpp_ip_route import MPLS_LABEL_INVALID, VppRoutePath
+from vpp_ip_route import MPLS_LABEL_INVALID, VppRoutePath, VppMplsLabel
 
 
 class BIER_HDR_PAYLOAD:
@@ -120,11 +120,34 @@ class VppBierRoute(VppObject):
         self.bp = bp
         self.paths = paths
 
+    def encode_paths(self):
+        br_paths = []
+        for p in self.paths:
+            lstack = []
+            for l in p.nh_labels:
+                if type(l) == VppMplsLabel:
+                    lstack.append(l.encode())
+                else:
+                    lstack.append({'label': l, 'ttl': 255})
+            n_labels = len(lstack)
+            while (len(lstack) < 16):
+                lstack.append({})
+            br_paths.append({'next_hop': p.nh_addr,
+                             'weight': 1,
+                             'afi': 0,
+                             'preference': 0,
+                             'table_id': p.nh_table_id,
+                             'next_hop_id': p.next_hop_id,
+                             'is_udp_encap': p.is_udp_encap,
+                             'n_labels': n_labels,
+                             'label_stack': lstack})
+        return br_paths
+
     def add_vpp_config(self):
         self._test.vapi.bier_route_add_del(
             self.tbl_id,
             self.bp,
-            self.paths,
+            self.encode_paths(),
             is_add=1)
         self._test.registry.register(self, self._test.logger)
 
@@ -132,7 +155,7 @@ class VppBierRoute(VppObject):
         self._test.vapi.bier_route_add_del(
             self.tbl_id,
             self.bp,
-            self.paths,
+            self.encode_paths(),
             is_add=0)
 
     def __str__(self):