test:vxlan over ipv6 tests

Change-Id: Id910db0e3a07ecc6f469e2f0d1e97f39ba48cc60
Signed-off-by: Eyal Bari <ebari@cisco.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/test/test_vxlan6.py b/test/test_vxlan6.py
new file mode 100644
index 00000000000..0457f9b627d
--- /dev/null
+++ b/test/test_vxlan6.py
@@ -0,0 +1,187 @@
+#!/usr/bin/env python
+
+import socket
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.layers.inet6 import IPv6, UDP
+from scapy.layers.vxlan import VXLAN
+from scapy.utils import atol
+
+
+class TestVxlan(BridgeDomain, VppTestCase):
+    """ VXLAN Test Case """
+
+    def __init__(self, *args):
+        BridgeDomain.__init__(self)
+        VppTestCase.__init__(self, *args)
+
+    def encapsulate(self, pkt, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+                IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    @classmethod
+    def ip_range(cls, s, e):
+        """ range of remote ip's """
+        tmp = cls.pg0.remote_ip6.rsplit(':', 1)[0]
+        return ("%s:%x" % (tmp, i) for i in range(s, e))
+
+    def encap_mcast(self, pkt, src_ip, src_mac, vni):
+        """
+        Encapsulate the original payload frame by adding VXLAN header with its
+        UDP, IP and Ethernet fields
+        """
+        return (Ether(src=src_mac, dst=self.mcast_mac) /
+                IPv6(src=src_ip, dst=self.mcast_ip6) /
+                UDP(sport=self.dport, dport=self.dport, chksum=0) /
+                VXLAN(vni=vni, flags=self.flags) /
+                pkt)
+
+    def decapsulate(self, pkt):
+        """
+        Decapsulate the original payload frame by removing VXLAN header
+        """
+        # check if is set I flag
+        self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
+        return pkt[VXLAN].payload
+
+    # Method for checking VXLAN encapsulation.
+    #
+    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+        # TODO: add error messages
+        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+        #  by VPP using ARP.
+        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+            else:
+                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+        # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
+        self.assertEqual(pkt[IPv6].src, self.pg0.local_ip6)
+        if not local_only:
+            if not mcast_pkt:
+                self.assertEqual(pkt[IPv6].dst, self.pg0.remote_ip6)
+            else:
+                self.assertEqual(pkt[IPv6].dst, type(self).mcast_ip6)
+        # Verify UDP destination port is VXLAN 4789, source UDP port could be
+        #  arbitrary.
+        self.assertEqual(pkt[UDP].dport, type(self).dport)
+        # TODO: checksum check
+        # Verify VNI
+        self.assertEqual(pkt[VXLAN].vni, vni)
+
+    @classmethod
+    def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels):
+        # Create 10 ucast vxlan tunnels under bd
+        start = 10
+        end = start + n_ucast_tunnels
+        next_hop = cls.pg0.remote_ip6n
+        for dest_ip6 in cls.ip_range(start, end):
+            dest_ip6n = socket.inet_pton(socket.AF_INET6, dest_ip6)
+            # add host route so dest ip will not be resolved
+            cls.vapi.ip_add_del_route(dest_ip6n, 128, next_hop, is_ipv6=1)
+            r = cls.vapi.vxlan_add_del_tunnel(
+                is_ipv6=1,
+                src_addr=cls.pg0.local_ip6n,
+                dst_addr=dest_ip6n,
+                vni=vni)
+            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
+
+    @classmethod
+    def add_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=1)
+
+    @classmethod
+    def del_mcast_tunnels_load(cls):
+        cls.add_del_mcast_tunnels_load(is_add=0)
+
+    # Class method to start the VXLAN test case.
+    #  Overrides setUpClass method in VppTestCase class.
+    #  Python try..except statement is used to ensure that the tear down of
+    #  the class will be executed even if exception is raised.
+    #  @param cls The class pointer.
+    @classmethod
+    def setUpClass(cls):
+        super(TestVxlan, cls).setUpClass()
+
+        try:
+            cls.dport = 4789
+            cls.flags = 0x8
+
+            # Create 2 pg interfaces.
+            cls.create_pg_interfaces(range(4))
+            for pg in cls.pg_interfaces:
+                pg.admin_up()
+
+            # Configure IPv4 addresses on VPP pg0.
+            cls.pg0.config_ip6()
+
+            # Resolve MAC address for VPP's IP address on pg0.
+            cls.pg0.resolve_ndp()
+
+            cls.mcast_ip6 = 'ff0e::1'
+            cls.mcast_ip6n = socket.inet_pton(socket.AF_INET6, cls.mcast_ip6)
+            cls.mcast_mac = "33:33:00:00:00:%02x" % (1)
+
+            # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
+            #  into BD.
+            cls.single_tunnel_bd = 1
+            r = cls.vapi.vxlan_add_del_tunnel(
+                is_ipv6=1,
+                src_addr=cls.pg0.local_ip6n,
+                dst_addr=cls.pg0.remote_ip6n,
+                vni=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+            cls.vapi.sw_interface_set_l2_bridge(cls.pg1.sw_if_index,
+                                                bd_id=cls.single_tunnel_bd)
+
+            # Setup vni 2 to test multicast flooding
+            cls.n_ucast_tunnels = 10
+            cls.mcast_flood_bd = 2
+            cls.create_vxlan_flood_test_bd(cls.mcast_flood_bd,
+                                           cls.n_ucast_tunnels)
+            r = cls.vapi.vxlan_add_del_tunnel(
+                mcast_sw_if_index=1,
+                src_addr=cls.pg0.local_ip6n,
+                dst_addr=cls.mcast_ip6n,
+                vni=cls.mcast_flood_bd, is_ipv6=1)
+            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
+                                                bd_id=cls.mcast_flood_bd)
+            cls.vapi.sw_interface_set_l2_bridge(cls.pg2.sw_if_index,
+                                                bd_id=cls.mcast_flood_bd)
+
+            # Setup vni 3 to test unicast flooding
+            cls.ucast_flood_bd = 3
+            cls.create_vxlan_flood_test_bd(cls.ucast_flood_bd,
+                                           cls.n_ucast_tunnels)
+            cls.vapi.sw_interface_set_l2_bridge(cls.pg3.sw_if_index,
+                                                bd_id=cls.ucast_flood_bd)
+        except Exception:
+            super(TestVxlan, cls).tearDownClass()
+            raise
+
+    # Method to define VPP actions before tear down of the test case.
+    #  Overrides tearDown method in VppTestCase class.
+    #  @param self The object pointer.
+    def tearDown(self):
+        super(TestVxlan, self).tearDown()
+        if not self.vpp_dead:
+            self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+            self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+            self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+            self.logger.info(self.vapi.cli("show vxlan tunnel"))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)