test/test_sixrd.py

   1 #!/usr/bin/env python
   2 """ 6RD RFC5969 functional tests """
   3
   4 import unittest
   5 from scapy.layers.inet import IP, UDP, Ether
   6 from scapy.layers.inet6 import IPv6
   7 from scapy.packet import Raw
   8 from framework import VppTestCase, VppTestRunner
   9 from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
  10 from socket import AF_INET, AF_INET6, inet_pton
  11
  12 """ Test6rd is a subclass of  VPPTestCase classes.
  13
  14 6RD tests.
  15
  16 """
  17
  18
  19 class Test6RD(VppTestCase):
  20     """ 6RD Test Case """
  21
  22     @classmethod
  23     def setUpClass(cls):
  24         super(Test6RD, cls).setUpClass()
  25         cls.create_pg_interfaces(range(2))
  26         cls.interfaces = list(cls.pg_interfaces)
  27
  28     def setUp(cls):
  29         super(Test6RD, cls).setUp()
  30         for i in cls.interfaces:
  31             i.admin_up()
  32             i.config_ip4()
  33             i.config_ip6()
  34             i.disable_ipv6_ra()
  35             i.resolve_arp()
  36             i.resolve_ndp()
  37
  38     def tearDown(self):
  39         super(Test6RD, self).tearDown()
  40         if not self.vpp_dead:
  41             for i in self.pg_interfaces:
  42                 i.unconfig_ip4()
  43                 i.unconfig_ip6()
  44                 i.admin_down()
  45             if type(self.tunnel_index) is list:
  46                 for sw_if_index in self.tunnel_index:
  47                     self.vapi.ipip_6rd_del_tunnel(sw_if_index)
  48             else:
  49                 self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
  50
  51     def validate_6in4(self, rx, expected):
  52         if IP not in rx:
  53             self.fail()
  54         if IPv6 not in rx:
  55             self.fail()
  56
  57         self.assertEqual(rx[IP].src, expected[IP].src)
  58         self.assertEqual(rx[IP].dst, expected[IP].dst)
  59         self.assertEqual(rx[IP].proto, expected[IP].proto)
  60         self.assertEqual(rx[IPv6].src, expected[IPv6].src)
  61         self.assertEqual(rx[IPv6].dst, expected[IPv6].dst)
  62
  63     def validate_4in6(self, rx, expected):
  64         if IPv6 not in rx:
  65             self.fail()
  66         if IP in rx:
  67             self.fail()
  68
  69         self.assertTrue(rx[IPv6].src == expected[IPv6].src)
  70         self.assertTrue(rx[IPv6].dst == expected[IPv6].dst)
  71         self.assertTrue(rx[IPv6].nh == expected[IPv6].nh)
  72
  73     def payload(self, len):
  74         return 'x' * len
  75
  76     def test_6rd_ip6_to_ip4(self):
  77         """ ip6 -> ip4 (encap) 6rd test """
  78         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
  79         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1", nh='UDP')
  80
  81         rv = self.vapi.ipip_6rd_add_tunnel(
  82             0, inet_pton(AF_INET6, '2002::'), 16,
  83             inet_pton(AF_INET, '0.0.0.0'), 0,
  84             self.pg0.local_ip4n, True)
  85         self.tunnel_index = rv.sw_if_index
  86
  87         self.vapi.cli("show ip6 fib")
  88         p_payload = UDP(sport=1234, dport=1234)
  89         p = (p_ether / p_ip6 / p_payload)
  90
  91         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
  92                       proto='ipv6') / p_ip6)
  93
  94         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
  95         for p in rx:
  96             self.validate_6in4(p, p_reply)
  97
  98         # MTU tests (default is 1480)
  99         plen = 1481 - 40 - 8
 100         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1")
 101         p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen))
 102         p = (p_ether / p_ip6 / p_payload)
 103
 104         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
 105                       proto='ipv6') / p_ip6)
 106
 107         rx = self.send_and_assert_no_replies(self.pg0, p*10)
 108
 109     def test_6rd_ip4_to_ip6(self):
 110         """ ip4 -> ip6 (decap) 6rd test """
 111
 112         rv = self.vapi.ipip_6rd_add_tunnel(
 113             0, inet_pton(AF_INET6, '2002::'),
 114             16, inet_pton(AF_INET, '0.0.0.0'),
 115             0, self.pg0.local_ip4n, True)
 116         self.tunnel_index = rv.sw_if_index
 117         rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index)
 118         rv = self.vapi.ipip_6rd_add_tunnel(
 119             0, inet_pton(AF_INET6, '2002::'),
 120             16, inet_pton(AF_INET, '0.0.0.0'),
 121             0, self.pg0.local_ip4n, True)
 122         self.tunnel_index = rv.sw_if_index
 123
 124         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 125                  UDP(sport=1234, dport=1234))
 126
 127         p = (Ether(src=self.pg0.remote_mac,
 128                    dst=self.pg0.local_mac) /
 129              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 130              p_ip6)
 131
 132         p_reply = p_ip6
 133
 134         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 135         for p in rx:
 136             self.validate_4in6(p, p_reply)
 137
 138     def test_6rd_ip4_to_ip6_multiple(self):
 139         """ ip4 -> ip6 (decap) 6rd test """
 140
 141         self.tunnel_index = []
 142         rv = self.vapi.ipip_6rd_add_tunnel(
 143             0, inet_pton(AF_INET6, '2002::'),
 144             16, inet_pton(AF_INET, '0.0.0.0'),
 145             0, self.pg0.local_ip4n, True)
 146         self.tunnel_index.append(rv.sw_if_index)
 147
 148         rv = self.vapi.ipip_6rd_add_tunnel(
 149             0, inet_pton(AF_INET6, '2003::'),
 150             16, inet_pton(AF_INET, '0.0.0.0'),
 151             0, self.pg1.local_ip4n, True)
 152         self.tunnel_index.append(rv.sw_if_index)
 153
 154         self.vapi.cli("show ip6 fib")
 155         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 156         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 157         p_ip6_1 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 158                    UDP(sport=1234, dport=1234))
 159         p_ip6_2 = (IPv6(src="2003:AC10:0202::1", dst=self.pg1.remote_ip6) /
 160                    UDP(sport=1234, dport=1234))
 161
 162         p = (p_ether / p_ip4 / p_ip6_1)
 163         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 164         for p in rx:
 165             self.validate_4in6(p, p_ip6_1)
 166
 167         p = (p_ether / p_ip4 / p_ip6_2)
 168         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 169         for p in rx:
 170             self.validate_4in6(p, p_ip6_2)
 171
 172     def test_6rd_ip4_to_ip6_suffix(self):
 173         """ ip4 -> ip6 (decap) 6rd test """
 174
 175         rv = self.vapi.ipip_6rd_add_tunnel(
 176             0, inet_pton(AF_INET6, '2002::'), 16,
 177             inet_pton(AF_INET, '172.0.0.0'), 8,
 178             self.pg0.local_ip4n, True)
 179
 180         self.tunnel_index = rv.sw_if_index
 181
 182         self.vapi.cli("show ip6 fib")
 183         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 184         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 185         p_ip6 = (IPv6(src="2002:1002:0200::1", dst=self.pg1.remote_ip6) /
 186                  UDP(sport=1234, dport=1234))
 187
 188         p = (p_ether / p_ip4 / p_ip6)
 189         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 190         for p in rx:
 191             self.validate_4in6(p, p_ip6)
 192
 193     def test_6rd_ip4_to_ip6_sec_check(self):
 194         """ ip4 -> ip6 (decap) security check 6rd test """
 195
 196         rv = self.vapi.ipip_6rd_add_tunnel(
 197             0, inet_pton(AF_INET6, '2002::'),
 198             16, inet_pton(AF_INET, '0.0.0.0'),
 199             0, self.pg0.local_ip4n, True)
 200         self.tunnel_index = rv.sw_if_index
 201
 202         self.vapi.cli("show ip6 fib")
 203         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 204                  UDP(sport=1234, dport=1234))
 205         p_ip6_fail = (IPv6(src="2002:DEAD:0202::1", dst=self.pg1.remote_ip6) /
 206                       UDP(sport=1234, dport=1234))
 207
 208         p = (Ether(src=self.pg0.remote_mac,
 209                    dst=self.pg0.local_mac) /
 210              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 211              p_ip6)
 212
 213         p_reply = p_ip6
 214
 215         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 216         for p in rx:
 217             self.validate_4in6(p, p_reply)
 218
 219         p = (Ether(src=self.pg0.remote_mac,
 220                    dst=self.pg0.local_mac) /
 221              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 222              p_ip6_fail)
 223         rx = self.send_and_assert_no_replies(self.pg0, p*10)
 224
 225     def test_6rd_bgp_tunnel(self):
 226         """ 6rd BGP tunnel """
 227
 228         rv = self.vapi.ipip_6rd_add_tunnel(
 229             0, inet_pton(AF_INET6, '2002::'),
 230             16, inet_pton(AF_INET, '0.0.0.0'),
 231             0, self.pg0.local_ip4n, False)
 232         self.tunnel_index = rv.sw_if_index
 233
 234         default_route = VppIpRoute(
 235             self, "DEAD::", 16, [VppRoutePath("2002:0808:0808::",
 236                                               self.tunnel_index,
 237                                               proto=DpoProto.DPO_PROTO_IP6)],
 238             is_ip6=1)
 239         default_route.add_vpp_config()
 240
 241         ip4_route = VppIpRoute(self, "8.0.0.0", 8,
 242                                [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)])
 243         ip4_route.add_vpp_config()
 244
 245         # Via recursive route 6 -> 4
 246         p = (Ether(src=self.pg0.remote_mac,
 247                    dst=self.pg0.local_mac) /
 248              IPv6(src="1::1", dst="DEAD:BEEF::1") /
 249              UDP(sport=1234, dport=1234))
 250
 251         p_reply = (IP(src=self.pg0.local_ip4, dst="8.8.8.8",
 252                       proto='ipv6') /
 253                    IPv6(src='1::1', dst='DEAD:BEEF::1', nh='UDP'))
 254
 255         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 256         for p in rx:
 257             self.validate_6in4(p, p_reply)
 258
 259         # Via recursive route 4 -> 6 (Security check must be disabled)
 260         p_ip6 = (IPv6(src="DEAD:BEEF::1", dst=self.pg1.remote_ip6) /
 261                  UDP(sport=1234, dport=1234))
 262         p = (Ether(src=self.pg0.remote_mac,
 263                    dst=self.pg0.local_mac) /
 264              IP(src="8.8.8.8", dst=self.pg0.local_ip4) /
 265              p_ip6)
 266
 267         p_reply = p_ip6
 268
 269         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 270         for p in rx:
 271             self.validate_4in6(p, p_reply)
 272
 273
 274 if __name__ == '__main__':
 275     unittest.main(testRunner=VppTestRunner)