UDP Encapsulation.

A UDP-encap object that particiapates in the FIB graph and contributes
DPO to teh output chain. It thereofre resembles a tunnel but without the
interface. FIB paths (and henace routes) can then be created to egress
through the UDP-encap. Said routes can have MPLS labels, hence this also
allows MPLSoUPD.
Encap is uni-directional. For decap, one still registers with the UDP port
dispatcher.

Change-Id: I23bd345523b20789a1de1b02022ea1148ca50797
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/test/vpp_udp_encap.py b/test/vpp_udp_encap.py
new file mode 100644
index 00000000000..56d23cc45dc
--- /dev/null
+++ b/test/vpp_udp_encap.py
@@ -0,0 +1,73 @@
+"""
+  UDP encap objects
+"""
+
+from vpp_object import *
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+
+
+def find_udp_encap(test, id):
+    encaps = test.vapi.udp_encap_dump()
+    for e in encaps:
+        if id == e.id:
+            return True
+    return False
+
+
+class VppUdpEncap(VppObject):
+
+    def __init__(self,
+                 test,
+                 id,
+                 src_ip,
+                 dst_ip,
+                 src_port,
+                 dst_port,
+                 table_id=0,
+                 is_ip6=0):
+        self._test = test
+        self.id = id
+        self.table_id = table_id
+        self.is_ip6 = is_ip6
+        self.src_ip_s = src_ip
+        self.dst_ip_s = dst_ip
+        if is_ip6:
+            self.src_ip = inet_pton(AF_INET6, src_ip)
+            self.dst_ip = inet_pton(AF_INET6, dst_ip)
+        else:
+            self.src_ip = inet_pton(AF_INET, src_ip)
+            self.dst_ip = inet_pton(AF_INET, dst_ip)
+        self.src_port = src_port
+        self.dst_port = dst_port
+
+    def add_vpp_config(self):
+        self._test.vapi.udp_encap_add_del(
+            self.id,
+            self.src_ip,
+            self.dst_ip,
+            self.src_port,
+            self.dst_port,
+            self.table_id,
+            is_ip6=self.is_ip6,
+            is_add=1)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.udp_encap_add_del(
+            self.id,
+            self.src_ip,
+            self.dst_ip,
+            self.src_port,
+            self.dst_port,
+            self.table_id,
+            is_ip6=self.is_ip6,
+            is_add=0)
+
+    def query_vpp_config(self):
+        return find_udp_encap(self._test, self.id)
+
+    def __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return ("udp-encap-%d" % self.id)