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