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 import DpoProto
  10 from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
  11 from socket import AF_INET, AF_INET6, inet_pton
  12
  13 """ Test6rd is a subclass of  VPPTestCase classes.
  14
  15 6RD tests.
  16
  17 """
  18
  19
  20 class Test6RD(VppTestCase):
  21     """ 6RD Test Case """
  22
  23     @classmethod
  24     def setUpClass(cls):
  25         super(Test6RD, cls).setUpClass()
  26         cls.create_pg_interfaces(range(4))
  27         cls.interfaces = list(cls.pg_interfaces)
  28
  29     def setUp(self):
  30         super(Test6RD, self).setUp()
  31         t4 = VppIpTable(self, 10)
  32         t6 = VppIpTable(self, 20, True)
  33
  34         t4.add_vpp_config()
  35         t6.add_vpp_config()
  36
  37         for n in range(4):
  38             i = self.pg_interfaces[n]
  39             i.admin_up()
  40             if (n > 1):
  41                 i.set_table_ip4(10)
  42                 i.set_table_ip6(20)
  43             i.config_ip4()
  44             i.config_ip6()
  45             i.disable_ipv6_ra()
  46             i.resolve_arp()
  47             i.resolve_ndp()
  48
  49     def tearDown(self):
  50         for i in self.pg_interfaces:
  51             i.unconfig_ip4()
  52             i.unconfig_ip6()
  53             i.set_table_ip4(0)
  54             i.set_table_ip6(0)
  55         super(Test6RD, self).tearDown()
  56
  57     def validate_6in4(self, rx, expected):
  58         if IP not in rx:
  59             self.fail()
  60         if IPv6 not in rx:
  61             self.fail()
  62
  63         self.assertEqual(rx[IP].src, expected[IP].src)
  64         self.assertEqual(rx[IP].dst, expected[IP].dst)
  65         self.assertEqual(rx[IP].proto, expected[IP].proto)
  66         self.assertEqual(rx[IPv6].src, expected[IPv6].src)
  67         self.assertEqual(rx[IPv6].dst, expected[IPv6].dst)
  68
  69     def validate_4in6(self, rx, expected):
  70         if IPv6 not in rx:
  71             self.fail()
  72         if IP in rx:
  73             self.fail()
  74
  75         self.assertEqual(rx[IPv6].src, expected[IPv6].src)
  76         self.assertEqual(rx[IPv6].dst, expected[IPv6].dst)
  77         self.assertEqual(rx[IPv6].nh, expected[IPv6].nh)
  78
  79     def payload(self, len):
  80         return 'x' * len
  81
  82     def test_6rd_ip6_to_ip4(self):
  83         """ ip6 -> ip4 (encap) 6rd test """
  84         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
  85         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1", nh='UDP')
  86
  87         rv = self.vapi.ipip_6rd_add_tunnel(
  88             0, inet_pton(AF_INET6, '2002::'), 16,
  89             0, inet_pton(AF_INET, '0.0.0.0'), 0,
  90             self.pg0.local_ip4n, True)
  91         self.tunnel_index = rv.sw_if_index
  92
  93         self.vapi.cli("show ip6 fib")
  94         p_payload = UDP(sport=1234, dport=1234)
  95         p = (p_ether / p_ip6 / p_payload)
  96
  97         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
  98                       proto='ipv6') / p_ip6)
  99
 100         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 101         for p in rx:
 102             self.validate_6in4(p, p_reply)
 103
 104         # MTU tests (default is 1480)
 105         plen = 1481 - 40 - 8
 106         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1")
 107         p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen))
 108         p = (p_ether / p_ip6 / p_payload)
 109
 110         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
 111                       proto='ipv6') / p_ip6)
 112
 113         rx = self.send_and_assert_no_replies(self.pg0, p*10)
 114         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 115
 116     def test_6rd_ip6_to_ip4_vrf(self):
 117         """ ip6 -> ip4 (encap) 6rd VRF test """
 118         p_ether = Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac)
 119         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0402::1", nh='UDP')
 120
 121         rv = self.vapi.ipip_6rd_add_tunnel(
 122             20, inet_pton(AF_INET6, '2002::'), 16,
 123             10, inet_pton(AF_INET, '0.0.0.0'), 0,
 124             self.pg2.local_ip4n, True)
 125         self.tunnel_index = rv.sw_if_index
 126
 127         self.vapi.cli("show ip6 fib")
 128         p_payload = UDP(sport=1234, dport=1234)
 129         p = (p_ether / p_ip6 / p_payload)
 130
 131         p_reply = (IP(src=self.pg2.local_ip4, dst=self.pg3.remote_ip4,
 132                       proto='ipv6') / p_ip6)
 133
 134         rx = self.send_and_expect(self.pg2, p*10, self.pg3)
 135         for p in rx:
 136             self.validate_6in4(p, p_reply)
 137
 138         # MTU tests (default is 1480)
 139         plen = 1481 - 40 - 8
 140         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0402::1")
 141         p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen))
 142         p = (p_ether / p_ip6 / p_payload)
 143
 144         p_reply = (IP(src=self.pg2.local_ip4, dst=self.pg3.remote_ip4,
 145                       proto='ipv6') / p_ip6)
 146
 147         rx = self.send_and_assert_no_replies(self.pg0, p*10)
 148         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 149
 150     def test_6rd_ip4_to_ip6(self):
 151         """ ip4 -> ip6 (decap) 6rd test """
 152
 153         rv = self.vapi.ipip_6rd_add_tunnel(
 154             0, inet_pton(AF_INET6, '2002::'), 16,
 155             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 156             self.pg0.local_ip4n, True)
 157         self.tunnel_index = rv.sw_if_index
 158         rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index)
 159         rv = self.vapi.ipip_6rd_add_tunnel(
 160             0, inet_pton(AF_INET6, '2002::'), 16,
 161             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 162             self.pg0.local_ip4n, True)
 163         self.tunnel_index = rv.sw_if_index
 164
 165         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 166                  UDP(sport=1234, dport=1234))
 167
 168         p = (Ether(src=self.pg0.remote_mac,
 169                    dst=self.pg0.local_mac) /
 170              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 171              p_ip6)
 172
 173         p_reply = p_ip6
 174
 175         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 176         for p in rx:
 177             self.validate_4in6(p, p_reply)
 178         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 179
 180     def test_6rd_ip4_to_ip6_vrf(self):
 181         """ ip4 -> ip6 (decap) 6rd VRF test """
 182
 183         rv = self.vapi.ipip_6rd_add_tunnel(
 184             20, inet_pton(AF_INET6, '2002::'), 16,
 185             10, inet_pton(AF_INET, '0.0.0.0'), 0,
 186             self.pg2.local_ip4n, True)
 187         self.tunnel_index = rv.sw_if_index
 188         rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index)
 189         rv = self.vapi.ipip_6rd_add_tunnel(
 190             20, inet_pton(AF_INET6, '2002::'), 16,
 191             10, inet_pton(AF_INET, '0.0.0.0'), 0,
 192             self.pg2.local_ip4n, True)
 193         self.tunnel_index = rv.sw_if_index
 194         self.vapi.sw_interface_set_table(self.tunnel_index, 1, 20)
 195
 196         p_ip6 = (IPv6(src="2002:AC10:0402::1", dst=self.pg3.remote_ip6) /
 197                  UDP(sport=1234, dport=1234))
 198
 199         p = (Ether(src=self.pg2.remote_mac,
 200                    dst=self.pg2.local_mac) /
 201              IP(src=self.pg3.remote_ip4, dst=self.pg2.local_ip4) /
 202              p_ip6)
 203
 204         p_reply = p_ip6
 205
 206         rx = self.send_and_expect(self.pg2, p*10, self.pg3)
 207         for p in rx:
 208             self.validate_4in6(p, p_reply)
 209         self.vapi.sw_interface_set_table(self.tunnel_index, 1, 0)
 210         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 211
 212     def test_6rd_ip4_to_ip6_multiple(self):
 213         """ ip4 -> ip6 (decap) 6rd test """
 214
 215         self.tunnel_index = []
 216         rv = self.vapi.ipip_6rd_add_tunnel(
 217             0, inet_pton(AF_INET6, '2002::'), 16,
 218             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 219             self.pg0.local_ip4n, True)
 220         self.tunnel_index.append(rv.sw_if_index)
 221
 222         rv = self.vapi.ipip_6rd_add_tunnel(
 223             0, inet_pton(AF_INET6, '2003::'), 16,
 224             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 225             self.pg1.local_ip4n, True)
 226         self.tunnel_index.append(rv.sw_if_index)
 227
 228         self.vapi.cli("show ip6 fib")
 229         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 230         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 231         p_ip6_1 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 232                    UDP(sport=1234, dport=1234))
 233         p_ip6_2 = (IPv6(src="2003:AC10:0202::1", dst=self.pg1.remote_ip6) /
 234                    UDP(sport=1234, dport=1234))
 235
 236         p = (p_ether / p_ip4 / p_ip6_1)
 237         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 238         for p in rx:
 239             self.validate_4in6(p, p_ip6_1)
 240
 241         p = (p_ether / p_ip4 / p_ip6_2)
 242         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 243         for p in rx:
 244             self.validate_4in6(p, p_ip6_2)
 245         for i in self.tunnel_index:
 246             self.vapi.ipip_6rd_del_tunnel(i)
 247
 248     def test_6rd_ip4_to_ip6_suffix(self):
 249         """ ip4 -> ip6 (decap) 6rd test """
 250
 251         rv = self.vapi.ipip_6rd_add_tunnel(
 252             0, inet_pton(AF_INET6, '2002::'), 16,
 253             0, inet_pton(AF_INET, '172.0.0.0'), 8,
 254             self.pg0.local_ip4n, True)
 255
 256         self.tunnel_index = rv.sw_if_index
 257
 258         self.vapi.cli("show ip6 fib")
 259         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 260         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 261         p_ip6 = (IPv6(src="2002:1002:0200::1", dst=self.pg1.remote_ip6) /
 262                  UDP(sport=1234, dport=1234))
 263
 264         p = (p_ether / p_ip4 / p_ip6)
 265         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 266         for p in rx:
 267             self.validate_4in6(p, p_ip6)
 268         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 269
 270     def test_6rd_ip4_to_ip6_sec_check(self):
 271         """ ip4 -> ip6 (decap) security check 6rd test """
 272
 273         rv = self.vapi.ipip_6rd_add_tunnel(
 274             0, inet_pton(AF_INET6, '2002::'), 16,
 275             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 276             self.pg0.local_ip4n, True)
 277         self.tunnel_index = rv.sw_if_index
 278
 279         self.vapi.cli("show ip6 fib")
 280         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 281                  UDP(sport=1234, dport=1234))
 282         p_ip6_fail = (IPv6(src="2002:DEAD:0202::1", dst=self.pg1.remote_ip6) /
 283                       UDP(sport=1234, dport=1234))
 284
 285         p = (Ether(src=self.pg0.remote_mac,
 286                    dst=self.pg0.local_mac) /
 287              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 288              p_ip6)
 289
 290         p_reply = p_ip6
 291
 292         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 293         for p in rx:
 294             self.validate_4in6(p, p_reply)
 295
 296         p = (Ether(src=self.pg0.remote_mac,
 297                    dst=self.pg0.local_mac) /
 298              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 299              p_ip6_fail)
 300         rx = self.send_and_assert_no_replies(self.pg0, p*10)
 301         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 302
 303     def test_6rd_bgp_tunnel(self):
 304         """ 6rd BGP tunnel """
 305
 306         rv = self.vapi.ipip_6rd_add_tunnel(
 307             0, inet_pton(AF_INET6, '2002::'), 16,
 308             0, inet_pton(AF_INET, '0.0.0.0'), 0,
 309             self.pg0.local_ip4n, False)
 310         self.tunnel_index = rv.sw_if_index
 311
 312         default_route = VppIpRoute(
 313             self, "DEAD::", 16, [VppRoutePath("2002:0808:0808::",
 314                                               self.tunnel_index,
 315                                               proto=DpoProto.DPO_PROTO_IP6)],
 316             is_ip6=1)
 317         default_route.add_vpp_config()
 318
 319         ip4_route = VppIpRoute(self, "8.0.0.0", 8,
 320                                [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)])
 321         ip4_route.add_vpp_config()
 322
 323         # Via recursive route 6 -> 4
 324         p = (Ether(src=self.pg0.remote_mac,
 325                    dst=self.pg0.local_mac) /
 326              IPv6(src="1::1", dst="DEAD:BEEF::1") /
 327              UDP(sport=1234, dport=1234))
 328
 329         p_reply = (IP(src=self.pg0.local_ip4, dst="8.8.8.8",
 330                       proto='ipv6') /
 331                    IPv6(src='1::1', dst='DEAD:BEEF::1', nh='UDP'))
 332
 333         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 334         for p in rx:
 335             self.validate_6in4(p, p_reply)
 336
 337         # Via recursive route 4 -> 6 (Security check must be disabled)
 338         p_ip6 = (IPv6(src="DEAD:BEEF::1", dst=self.pg1.remote_ip6) /
 339                  UDP(sport=1234, dport=1234))
 340         p = (Ether(src=self.pg0.remote_mac,
 341                    dst=self.pg0.local_mac) /
 342              IP(src="8.8.8.8", dst=self.pg0.local_ip4) /
 343              p_ip6)
 344
 345         p_reply = p_ip6
 346
 347         rx = self.send_and_expect(self.pg0, p*10, self.pg1)
 348         for p in rx:
 349             self.validate_4in6(p, p_reply)
 350         ip4_route.remove_vpp_config()
 351         default_route.remove_vpp_config()
 352         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 353
 354
 355 if __name__ == '__main__':
 356     unittest.main(testRunner=VppTestRunner)