l2tp: l2tp-decap-local don't accept packets unless configured

Change-Id: I2e48eb772dc44912192d0684b8ee631d8d975e9e
Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/test/test_l2tp.py b/test/test_l2tp.py
new file mode 100644
index 00000000000..1d229e6e356
--- /dev/null
+++ b/test/test_l2tp.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+
+import unittest
+
+from scapy.layers.l2 import Ether
+from scapy.layers.inet6 import IPv6
+
+from framework import VppTestCase
+
+
+class TestL2tp(VppTestCase):
+    """ L2TP Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestL2tp, cls).setUpClass()
+
+        cls.create_pg_interfaces(range(1))
+        cls.pg0.admin_up()
+        cls.pg0.config_ip6()
+
+    def test_l2tp_decap_local(self):
+        """ L2TP don't accept packets unless configured """
+
+        pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+               IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=115))
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        # l2tp should not accept packets
+        err = self.statistics.get_counter(
+            '/err/l2tp-decap-local/l2tpv3 session not found')[0]
+        self.assertEqual(err, 0)
+        err_count = err
+
+        self.vapi.l2tpv3_create_tunnel(client_address=self.pg0.local_ip6n,
+                                       our_address=self.pg0.remote_ip6n,
+                                       is_ipv6=1)
+
+        self.pg0.add_stream(pkt)
+        self.pg_start()
+
+        # l2tp accepts packets
+        err = self.statistics.get_counter(
+            '/err/l2tp-decap-local/l2tpv3 session not found')[0]
+        self.assertEqual(err, 1)
+        err_count = err