test/test_vxlan6.py

   1 #!/usr/bin/env python3
   2
   3 import socket
   4 import unittest
   5 from framework import VppTestCase, VppTestRunner
   6 from template_bd import BridgeDomain
   7
   8 from scapy.layers.l2 import Ether
   9 from scapy.layers.inet6 import IPv6, UDP
  10 from scapy.layers.vxlan import VXLAN
  11
  12 import util
  13 from vpp_ip_route import VppIpRoute, VppRoutePath
  14 from vpp_vxlan_tunnel import VppVxlanTunnel
  15 from vpp_ip import INVALID_INDEX
  16
  17
  18 class TestVxlan6(BridgeDomain, VppTestCase):
  19     """ VXLAN over IPv6 Test Case """
  20
  21     def __init__(self, *args):
  22         BridgeDomain.__init__(self)
  23         VppTestCase.__init__(self, *args)
  24
  25     def encapsulate(self, pkt, vni):
  26         """
  27         Encapsulate the original payload frame by adding VXLAN header with its
  28         UDP, IP and Ethernet fields
  29         """
  30         return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
  31                 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
  32                 UDP(sport=self.dport, dport=self.dport, chksum=0) /
  33                 VXLAN(vni=vni, flags=self.flags) /
  34                 pkt)
  35
  36     @classmethod
  37     def ip_range(cls, s, e):
  38         """ range of remote ip's """
  39         tmp = cls.pg0.remote_ip6.rsplit(':', 1)[0]
  40         return ("%s:%x" % (tmp, i) for i in range(s, e))
  41
  42     def encap_mcast(self, pkt, src_ip, src_mac, vni):
  43         """
  44         Encapsulate the original payload frame by adding VXLAN header with its
  45         UDP, IP and Ethernet fields
  46         """
  47         return (Ether(src=src_mac, dst=self.mcast_mac) /
  48                 IPv6(src=src_ip, dst=self.mcast_ip6) /
  49                 UDP(sport=self.dport, dport=self.dport, chksum=0) /
  50                 VXLAN(vni=vni, flags=self.flags) /
  51                 pkt)
  52
  53     def decapsulate(self, pkt):
  54         """
  55         Decapsulate the original payload frame by removing VXLAN header
  56         """
  57         # check if is set I flag
  58         self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
  59         return pkt[VXLAN].payload
  60
  61     # Method for checking VXLAN encapsulation.
  62     #
  63     def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
  64         # TODO: add error messages
  65         # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
  66         #  by VPP using ARP.
  67         self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
  68         if not local_only:
  69             if not mcast_pkt:
  70                 self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
  71             else:
  72                 self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
  73         # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
  74         self.assertEqual(pkt[IPv6].src, self.pg0.local_ip6)
  75         if not local_only:
  76             if not mcast_pkt:
  77                 self.assertEqual(pkt[IPv6].dst, self.pg0.remote_ip6)
  78             else:
  79                 self.assertEqual(pkt[IPv6].dst, type(self).mcast_ip6)
  80         # Verify UDP destination port is VXLAN 4789, source UDP port could be
  81         #  arbitrary.
  82         self.assertEqual(pkt[UDP].dport, type(self).dport)
  83         # TODO: checksum check
  84         # Verify VNI
  85         self.assertEqual(pkt[VXLAN].vni, vni)
  86
  87     @classmethod
  88     def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels):
  89         # Create 10 ucast vxlan tunnels under bd
  90         start = 10
  91         end = start + n_ucast_tunnels
  92         for dest_ip6 in cls.ip_range(start, end):
  93             # add host route so dest ip will not be resolved
  94             rip = VppIpRoute(cls, dest_ip6, 128,
  95                              [VppRoutePath(cls.pg0.remote_ip6, INVALID_INDEX)],
  96                              register=False)
  97             rip.add_vpp_config()
  98             r = VppVxlanTunnel(cls, src=cls.pg0.local_ip6,
  99                                dst=dest_ip6, vni=vni)
 100             r.add_vpp_config()
 101             cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
 102
 103     @classmethod
 104     def add_mcast_tunnels_load(cls):
 105         cls.add_del_mcast_tunnels_load(is_add=1)
 106
 107     @classmethod
 108     def del_mcast_tunnels_load(cls):
 109         cls.add_del_mcast_tunnels_load(is_add=0)
 110
 111     # Class method to start the VXLAN test case.
 112     #  Overrides setUpClass method in VppTestCase class.
 113     #  Python try..except statement is used to ensure that the tear down of
 114     #  the class will be executed even if exception is raised.
 115     #  @param cls The class pointer.
 116     @classmethod
 117     def setUpClass(cls):
 118         super(TestVxlan6, cls).setUpClass()
 119
 120         try:
 121             cls.dport = 4789
 122             cls.flags = 0x8
 123
 124             # Create 2 pg interfaces.
 125             cls.create_pg_interfaces(range(4))
 126             for pg in cls.pg_interfaces:
 127                 pg.admin_up()
 128
 129             # Configure IPv6 addresses on VPP pg0.
 130             cls.pg0.config_ip6()
 131
 132             # Resolve MAC address for VPP's IP address on pg0.
 133             cls.pg0.resolve_ndp()
 134
 135             # Our Multicast address
 136             cls.mcast_ip6 = 'ff0e::1'
 137             cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip6)
 138         except Exception:
 139             super(TestVxlan6, cls).tearDownClass()
 140             raise
 141
 142     @classmethod
 143     def tearDownClass(cls):
 144         super(TestVxlan6, cls).tearDownClass()
 145
 146     def setUp(self):
 147         super(TestVxlan6, self).setUp()
 148         # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
 149         #  into BD.
 150         self.single_tunnel_vni = 0x12345
 151         self.single_tunnel_bd = 1
 152         r = VppVxlanTunnel(self, src=self.pg0.local_ip6,
 153                            dst=self.pg0.remote_ip6,
 154                            vni=self.single_tunnel_vni)
 155         r.add_vpp_config()
 156         self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
 157                                              bd_id=self.single_tunnel_bd)
 158         self.vapi.sw_interface_set_l2_bridge(
 159             rx_sw_if_index=self.pg1.sw_if_index, bd_id=self.single_tunnel_bd)
 160
 161         # Setup vni 2 to test multicast flooding
 162         self.n_ucast_tunnels = 10
 163         self.mcast_flood_bd = 2
 164         self.create_vxlan_flood_test_bd(self.mcast_flood_bd,
 165                                         self.n_ucast_tunnels)
 166         r = VppVxlanTunnel(self, src=self.pg0.local_ip6, dst=self.mcast_ip6,
 167                            mcast_sw_if_index=1, vni=self.mcast_flood_bd)
 168         r.add_vpp_config()
 169         self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
 170                                              bd_id=self.mcast_flood_bd)
 171         self.vapi.sw_interface_set_l2_bridge(
 172             rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.mcast_flood_bd)
 173
 174         # Setup vni 3 to test unicast flooding
 175         self.ucast_flood_bd = 3
 176         self.create_vxlan_flood_test_bd(self.ucast_flood_bd,
 177                                         self.n_ucast_tunnels)
 178         self.vapi.sw_interface_set_l2_bridge(
 179             rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd)
 180
 181     # Method to define VPP actions before tear down of the test case.
 182     #  Overrides tearDown method in VppTestCase class.
 183     #  @param self The object pointer.
 184     def tearDown(self):
 185         super(TestVxlan6, self).tearDown()
 186
 187     def show_commands_at_teardown(self):
 188         self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
 189         self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
 190         self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
 191         self.logger.info(self.vapi.cli("show vxlan tunnel"))
 192
 193
 194 if __name__ == '__main__':
 195     unittest.main(testRunner=VppTestRunner)