test/test_ip6.py

   1 #!/usr/bin/env python
   2
   3 import socket
   4 import unittest
   5
   6 from parameterized import parameterized
   7 import scapy.layers.inet6 as inet6
   8 from scapy.contrib.mpls import MPLS
   9 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
  10     ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
  11     ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
  12     ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply
  13 from scapy.layers.l2 import Ether, Dot1Q
  14 from scapy.packet import Raw
  15 from scapy.utils import inet_pton, inet_ntop
  16 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
  17     in6_mactoifaceid
  18 from six import moves
  19
  20 from framework import VppTestCase, VppTestRunner
  21 from util import ppp, ip6_normalize
  22 from vpp_ip import DpoProto
  23 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
  24     VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
  25     VppMplsRoute, VppMplsTable, VppIpTable
  26 from vpp_neighbor import find_nbr, VppNeighbor
  27 from vpp_pg_interface import is_ipv6_misc
  28 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
  29 from ipaddress import IPv6Network, IPv4Network
  30
  31 AF_INET6 = socket.AF_INET6
  32
  33 try:
  34     text_type = unicode
  35 except NameError:
  36     text_type = str
  37
  38
  39 def mk_ll_addr(mac):
  40     euid = in6_mactoifaceid(mac)
  41     addr = "fe80::" + euid
  42     return addr
  43
  44
  45 class TestIPv6ND(VppTestCase):
  46     def validate_ra(self, intf, rx, dst_ip=None):
  47         if not dst_ip:
  48             dst_ip = intf.remote_ip6
  49
  50         # unicasted packets must come to the unicast mac
  51         self.assertEqual(rx[Ether].dst, intf.remote_mac)
  52
  53         # and from the router's MAC
  54         self.assertEqual(rx[Ether].src, intf.local_mac)
  55
  56         # the rx'd RA should be addressed to the sender's source
  57         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
  58         self.assertEqual(in6_ptop(rx[IPv6].dst),
  59                          in6_ptop(dst_ip))
  60
  61         # and come from the router's link local
  62         self.assertTrue(in6_islladdr(rx[IPv6].src))
  63         self.assertEqual(in6_ptop(rx[IPv6].src),
  64                          in6_ptop(mk_ll_addr(intf.local_mac)))
  65
  66     def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
  67         if not dst_ip:
  68             dst_ip = intf.remote_ip6
  69         if not tgt_ip:
  70             dst_ip = intf.local_ip6
  71
  72         # unicasted packets must come to the unicast mac
  73         self.assertEqual(rx[Ether].dst, intf.remote_mac)
  74
  75         # and from the router's MAC
  76         self.assertEqual(rx[Ether].src, intf.local_mac)
  77
  78         # the rx'd NA should be addressed to the sender's source
  79         self.assertTrue(rx.haslayer(ICMPv6ND_NA))
  80         self.assertEqual(in6_ptop(rx[IPv6].dst),
  81                          in6_ptop(dst_ip))
  82
  83         # and come from the target address
  84         self.assertEqual(
  85             in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
  86
  87         # Dest link-layer options should have the router's MAC
  88         dll = rx[ICMPv6NDOptDstLLAddr]
  89         self.assertEqual(dll.lladdr, intf.local_mac)
  90
  91     def validate_ns(self, intf, rx, tgt_ip):
  92         nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
  93         dst_ip = inet_ntop(AF_INET6, nsma)
  94
  95         # NS is broadcast
  96         self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
  97
  98         # and from the router's MAC
  99         self.assertEqual(rx[Ether].src, intf.local_mac)
 100
 101         # the rx'd NS should be addressed to an mcast address
 102         # derived from the target address
 103         self.assertEqual(
 104             in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
 105
 106         # expect the tgt IP in the NS header
 107         ns = rx[ICMPv6ND_NS]
 108         self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
 109
 110         # packet is from the router's local address
 111         self.assertEqual(
 112             in6_ptop(rx[IPv6].src), intf.local_ip6)
 113
 114         # Src link-layer options should have the router's MAC
 115         sll = rx[ICMPv6NDOptSrcLLAddr]
 116         self.assertEqual(sll.lladdr, intf.local_mac)
 117
 118     def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
 119                            filter_out_fn=is_ipv6_misc):
 120         intf.add_stream(pkts)
 121         self.pg_enable_capture(self.pg_interfaces)
 122         self.pg_start()
 123         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 124
 125         self.assertEqual(len(rx), 1)
 126         rx = rx[0]
 127         self.validate_ra(intf, rx, dst_ip)
 128
 129     def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
 130                            tgt_ip=None,
 131                            filter_out_fn=is_ipv6_misc):
 132         intf.add_stream(pkts)
 133         self.pg_enable_capture(self.pg_interfaces)
 134         self.pg_start()
 135         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 136
 137         self.assertEqual(len(rx), 1)
 138         rx = rx[0]
 139         self.validate_na(intf, rx, dst_ip, tgt_ip)
 140
 141     def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
 142                            filter_out_fn=is_ipv6_misc):
 143         tx_intf.add_stream(pkts)
 144         self.pg_enable_capture(self.pg_interfaces)
 145         self.pg_start()
 146         rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
 147
 148         self.assertEqual(len(rx), 1)
 149         rx = rx[0]
 150         self.validate_ns(rx_intf, rx, tgt_ip)
 151
 152     def verify_ip(self, rx, smac, dmac, sip, dip):
 153         ether = rx[Ether]
 154         self.assertEqual(ether.dst, dmac)
 155         self.assertEqual(ether.src, smac)
 156
 157         ip = rx[IPv6]
 158         self.assertEqual(ip.src, sip)
 159         self.assertEqual(ip.dst, dip)
 160
 161
 162 class TestIPv6(TestIPv6ND):
 163     """ IPv6 Test Case """
 164
 165     @classmethod
 166     def setUpClass(cls):
 167         super(TestIPv6, cls).setUpClass()
 168
 169     def setUp(self):
 170         """
 171         Perform test setup before test case.
 172
 173         **Config:**
 174             - create 3 pg interfaces
 175                 - untagged pg0 interface
 176                 - Dot1Q subinterface on pg1
 177                 - Dot1AD subinterface on pg2
 178             - setup interfaces:
 179                 - put it into UP state
 180                 - set IPv6 addresses
 181                 - resolve neighbor address using NDP
 182             - configure 200 fib entries
 183
 184         :ivar list interfaces: pg interfaces and subinterfaces.
 185         :ivar dict flows: IPv4 packet flows in test.
 186
 187         *TODO:* Create AD sub interface
 188         """
 189         super(TestIPv6, self).setUp()
 190
 191         # create 3 pg interfaces
 192         self.create_pg_interfaces(range(3))
 193
 194         # create 2 subinterfaces for p1 and pg2
 195         self.sub_interfaces = [
 196             VppDot1QSubint(self, self.pg1, 100),
 197             VppDot1QSubint(self, self.pg2, 200)
 198             # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
 199         ]
 200
 201         # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
 202         self.flows = dict()
 203         self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
 204         self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
 205         self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
 206
 207         # packet sizes
 208         self.pg_if_packet_sizes = [64, 1500, 9020]
 209
 210         self.interfaces = list(self.pg_interfaces)
 211         self.interfaces.extend(self.sub_interfaces)
 212
 213         # setup all interfaces
 214         for i in self.interfaces:
 215             i.admin_up()
 216             i.config_ip6()
 217             i.resolve_ndp()
 218
 219         # config 2M FIB entries
 220         self.config_fib_entries(200)
 221
 222     def tearDown(self):
 223         """Run standard test teardown and log ``show ip6 neighbors``."""
 224         for i in self.interfaces:
 225             i.unconfig_ip6()
 226             i.ip6_disable()
 227             i.admin_down()
 228         for i in self.sub_interfaces:
 229             i.remove_vpp_config()
 230
 231         super(TestIPv6, self).tearDown()
 232         if not self.vpp_dead:
 233             self.logger.info(self.vapi.cli("show ip6 neighbors"))
 234             # info(self.vapi.cli("show ip6 fib"))  # many entries
 235
 236     def config_fib_entries(self, count):
 237         """For each interface add to the FIB table *count* routes to
 238         "fd02::1/128" destination with interface's local address as next-hop
 239         address.
 240
 241         :param int count: Number of FIB entries.
 242
 243         - *TODO:* check if the next-hop address shouldn't be remote address
 244           instead of local address.
 245         """
 246         n_int = len(self.interfaces)
 247         percent = 0
 248         counter = 0.0
 249         dest_addr = inet_pton(AF_INET6, "fd02::1")
 250         dest_addr_len = 128
 251         for i in self.interfaces:
 252             next_hop_address = i.local_ip6n
 253             for j in range(count / n_int):
 254                 self.vapi.ip_add_del_route(
 255                     dest_addr, dest_addr_len, next_hop_address, is_ipv6=1)
 256                 counter += 1
 257                 if counter / count * 100 > percent:
 258                     self.logger.info("Configure %d FIB entries .. %d%% done" %
 259                                      (count, percent))
 260                     percent += 1
 261
 262     def modify_packet(self, src_if, packet_size, pkt):
 263         """Add load, set destination IP and extend packet to required packet
 264         size for defined interface.
 265
 266         :param VppInterface src_if: Interface to create packet for.
 267         :param int packet_size: Required packet size.
 268         :param Scapy pkt: Packet to be modified.
 269         """
 270         dst_if_idx = packet_size / 10 % 2
 271         dst_if = self.flows[src_if][dst_if_idx]
 272         info = self.create_packet_info(src_if, dst_if)
 273         payload = self.info_to_payload(info)
 274         p = pkt / Raw(payload)
 275         p[IPv6].dst = dst_if.remote_ip6
 276         info.data = p.copy()
 277         if isinstance(src_if, VppSubInterface):
 278             p = src_if.add_dot1_layer(p)
 279         self.extend_packet(p, packet_size)
 280
 281         return p
 282
 283     def create_stream(self, src_if):
 284         """Create input packet stream for defined interface.
 285
 286         :param VppInterface src_if: Interface to create packet stream for.
 287         """
 288         hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
 289         pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
 290                     IPv6(src=src_if.remote_ip6) /
 291                     inet6.UDP(sport=1234, dport=1234))
 292
 293         pkts = [self.modify_packet(src_if, i, pkt_tmpl)
 294                 for i in moves.range(self.pg_if_packet_sizes[0],
 295                                      self.pg_if_packet_sizes[1], 10)]
 296         pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
 297                   for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
 298                                        self.pg_if_packet_sizes[2] + hdr_ext,
 299                                        50)]
 300         pkts.extend(pkts_b)
 301
 302         return pkts
 303
 304     def verify_capture(self, dst_if, capture):
 305         """Verify captured input packet stream for defined interface.
 306
 307         :param VppInterface dst_if: Interface to verify captured packet stream
 308                                     for.
 309         :param list capture: Captured packet stream.
 310         """
 311         self.logger.info("Verifying capture on interface %s" % dst_if.name)
 312         last_info = dict()
 313         for i in self.interfaces:
 314             last_info[i.sw_if_index] = None
 315         is_sub_if = False
 316         dst_sw_if_index = dst_if.sw_if_index
 317         if hasattr(dst_if, 'parent'):
 318             is_sub_if = True
 319         for packet in capture:
 320             if is_sub_if:
 321                 # Check VLAN tags and Ethernet header
 322                 packet = dst_if.remove_dot1_layer(packet)
 323             self.assertTrue(Dot1Q not in packet)
 324             try:
 325                 ip = packet[IPv6]
 326                 udp = packet[inet6.UDP]
 327                 payload_info = self.payload_to_info(str(packet[Raw]))
 328                 packet_index = payload_info.index
 329                 self.assertEqual(payload_info.dst, dst_sw_if_index)
 330                 self.logger.debug(
 331                     "Got packet on port %s: src=%u (id=%u)" %
 332                     (dst_if.name, payload_info.src, packet_index))
 333                 next_info = self.get_next_packet_info_for_interface2(
 334                     payload_info.src, dst_sw_if_index,
 335                     last_info[payload_info.src])
 336                 last_info[payload_info.src] = next_info
 337                 self.assertTrue(next_info is not None)
 338                 self.assertEqual(packet_index, next_info.index)
 339                 saved_packet = next_info.data
 340                 # Check standard fields
 341                 self.assertEqual(
 342                     ip.src, saved_packet[IPv6].src)
 343                 self.assertEqual(
 344                     ip.dst, saved_packet[IPv6].dst)
 345                 self.assertEqual(
 346                     udp.sport, saved_packet[inet6.UDP].sport)
 347                 self.assertEqual(
 348                     udp.dport, saved_packet[inet6.UDP].dport)
 349             except:
 350                 self.logger.error(ppp("Unexpected or invalid packet:", packet))
 351                 raise
 352         for i in self.interfaces:
 353             remaining_packet = self.get_next_packet_info_for_interface2(
 354                 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
 355             self.assertTrue(remaining_packet is None,
 356                             "Interface %s: Packet expected from interface %s "
 357                             "didn't arrive" % (dst_if.name, i.name))
 358
 359     def test_fib(self):
 360         """ IPv6 FIB test
 361
 362         Test scenario:
 363             - Create IPv6 stream for pg0 interface
 364             - Create IPv6 tagged streams for pg1's and pg2's subinterface.
 365             - Send and verify received packets on each interface.
 366         """
 367
 368         pkts = self.create_stream(self.pg0)
 369         self.pg0.add_stream(pkts)
 370
 371         for i in self.sub_interfaces:
 372             pkts = self.create_stream(i)
 373             i.parent.add_stream(pkts)
 374
 375         self.pg_enable_capture(self.pg_interfaces)
 376         self.pg_start()
 377
 378         pkts = self.pg0.get_capture()
 379         self.verify_capture(self.pg0, pkts)
 380
 381         for i in self.sub_interfaces:
 382             pkts = i.parent.get_capture()
 383             self.verify_capture(i, pkts)
 384
 385     def test_ns(self):
 386         """ IPv6 Neighbour Solicitation Exceptions
 387
 388         Test scenario:
 389            - Send an NS Sourced from an address not covered by the link sub-net
 390            - Send an NS to an mcast address the router has not joined
 391            - Send NS for a target address the router does not onn.
 392         """
 393
 394         #
 395         # An NS from a non link source address
 396         #
 397         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
 398         d = inet_ntop(AF_INET6, nsma)
 399
 400         p = (Ether(dst=in6_getnsmac(nsma)) /
 401              IPv6(dst=d, src="2002::2") /
 402              ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
 403              ICMPv6NDOptSrcLLAddr(
 404                  lladdr=self.pg0.remote_mac))
 405         pkts = [p]
 406
 407         self.send_and_assert_no_replies(
 408             self.pg0, pkts,
 409             "No response to NS source by address not on sub-net")
 410
 411         #
 412         # An NS for sent to a solicited mcast group the router is
 413         # not a member of FAILS
 414         #
 415         if 0:
 416             nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
 417             d = inet_ntop(AF_INET6, nsma)
 418
 419             p = (Ether(dst=in6_getnsmac(nsma)) /
 420                  IPv6(dst=d, src=self.pg0.remote_ip6) /
 421                  ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
 422                  ICMPv6NDOptSrcLLAddr(
 423                      lladdr=self.pg0.remote_mac))
 424             pkts = [p]
 425
 426             self.send_and_assert_no_replies(
 427                 self.pg0, pkts,
 428                 "No response to NS sent to unjoined mcast address")
 429
 430         #
 431         # An NS whose target address is one the router does not own
 432         #
 433         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
 434         d = inet_ntop(AF_INET6, nsma)
 435
 436         p = (Ether(dst=in6_getnsmac(nsma)) /
 437              IPv6(dst=d, src=self.pg0.remote_ip6) /
 438              ICMPv6ND_NS(tgt="fd::ffff") /
 439              ICMPv6NDOptSrcLLAddr(
 440                  lladdr=self.pg0.remote_mac))
 441         pkts = [p]
 442
 443         self.send_and_assert_no_replies(self.pg0, pkts,
 444                                         "No response to NS for unknown target")
 445
 446         #
 447         # A neighbor entry that has no associated FIB-entry
 448         #
 449         self.pg0.generate_remote_hosts(4)
 450         nd_entry = VppNeighbor(self,
 451                                self.pg0.sw_if_index,
 452                                self.pg0.remote_hosts[2].mac,
 453                                self.pg0.remote_hosts[2].ip6,
 454                                is_no_fib_entry=1)
 455         nd_entry.add_vpp_config()
 456
 457         #
 458         # check we have the neighbor, but no route
 459         #
 460         self.assertTrue(find_nbr(self,
 461                                  self.pg0.sw_if_index,
 462                                  self.pg0._remote_hosts[2].ip6))
 463         self.assertFalse(find_route(self,
 464                                     self.pg0._remote_hosts[2].ip6,
 465                                     128,
 466                                     inet=AF_INET6))
 467
 468         #
 469         # send an NS from a link local address to the interface's global
 470         # address
 471         #
 472         p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
 473              IPv6(
 474                  dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
 475              ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
 476              ICMPv6NDOptSrcLLAddr(
 477                  lladdr=self.pg0.remote_mac))
 478
 479         self.send_and_expect_na(self.pg0, p,
 480                                 "NS from link-local",
 481                                 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
 482                                 tgt_ip=self.pg0.local_ip6)
 483
 484         #
 485         # we should have learned an ND entry for the peer's link-local
 486         # but not inserted a route to it in the FIB
 487         #
 488         self.assertTrue(find_nbr(self,
 489                                  self.pg0.sw_if_index,
 490                                  self.pg0._remote_hosts[2].ip6_ll))
 491         self.assertFalse(find_route(self,
 492                                     self.pg0._remote_hosts[2].ip6_ll,
 493                                     128,
 494                                     inet=AF_INET6))
 495
 496         #
 497         # An NS to the router's own Link-local
 498         #
 499         p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
 500              IPv6(
 501                  dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
 502              ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
 503              ICMPv6NDOptSrcLLAddr(
 504                  lladdr=self.pg0.remote_mac))
 505
 506         self.send_and_expect_na(self.pg0, p,
 507                                 "NS to/from link-local",
 508                                 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
 509                                 tgt_ip=self.pg0.local_ip6_ll)
 510
 511         #
 512         # we should have learned an ND entry for the peer's link-local
 513         # but not inserted a route to it in the FIB
 514         #
 515         self.assertTrue(find_nbr(self,
 516                                  self.pg0.sw_if_index,
 517                                  self.pg0._remote_hosts[3].ip6_ll))
 518         self.assertFalse(find_route(self,
 519                                     self.pg0._remote_hosts[3].ip6_ll,
 520                                     128,
 521                                     inet=AF_INET6))
 522
 523     def test_ns_duplicates(self):
 524         """ ND Duplicates"""
 525
 526         #
 527         # Generate some hosts on the LAN
 528         #
 529         self.pg1.generate_remote_hosts(3)
 530
 531         #
 532         # Add host 1 on pg1 and pg2
 533         #
 534         ns_pg1 = VppNeighbor(self,
 535                              self.pg1.sw_if_index,
 536                              self.pg1.remote_hosts[1].mac,
 537                              self.pg1.remote_hosts[1].ip6)
 538         ns_pg1.add_vpp_config()
 539         ns_pg2 = VppNeighbor(self,
 540                              self.pg2.sw_if_index,
 541                              self.pg2.remote_mac,
 542                              self.pg1.remote_hosts[1].ip6)
 543         ns_pg2.add_vpp_config()
 544
 545         #
 546         # IP packet destined for pg1 remote host arrives on pg1 again.
 547         #
 548         p = (Ether(dst=self.pg0.local_mac,
 549                    src=self.pg0.remote_mac) /
 550              IPv6(src=self.pg0.remote_ip6,
 551                   dst=self.pg1.remote_hosts[1].ip6) /
 552              inet6.UDP(sport=1234, dport=1234) /
 553              Raw())
 554
 555         self.pg0.add_stream(p)
 556         self.pg_enable_capture(self.pg_interfaces)
 557         self.pg_start()
 558
 559         rx1 = self.pg1.get_capture(1)
 560
 561         self.verify_ip(rx1[0],
 562                        self.pg1.local_mac,
 563                        self.pg1.remote_hosts[1].mac,
 564                        self.pg0.remote_ip6,
 565                        self.pg1.remote_hosts[1].ip6)
 566
 567         #
 568         # remove the duplicate on pg1
 569         # packet stream shoud generate NSs out of pg1
 570         #
 571         ns_pg1.remove_vpp_config()
 572
 573         self.send_and_expect_ns(self.pg0, self.pg1,
 574                                 p, self.pg1.remote_hosts[1].ip6)
 575
 576         #
 577         # Add it back
 578         #
 579         ns_pg1.add_vpp_config()
 580
 581         self.pg0.add_stream(p)
 582         self.pg_enable_capture(self.pg_interfaces)
 583         self.pg_start()
 584
 585         rx1 = self.pg1.get_capture(1)
 586
 587         self.verify_ip(rx1[0],
 588                        self.pg1.local_mac,
 589                        self.pg1.remote_hosts[1].mac,
 590                        self.pg0.remote_ip6,
 591                        self.pg1.remote_hosts[1].ip6)
 592
 593     def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
 594         if not dst_ip:
 595             dst_ip = intf.remote_ip6
 596
 597         # unicasted packets must come to the unicast mac
 598         self.assertEqual(rx[Ether].dst, intf.remote_mac)
 599
 600         # and from the router's MAC
 601         self.assertEqual(rx[Ether].src, intf.local_mac)
 602
 603         # the rx'd RA should be addressed to the sender's source
 604         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
 605         self.assertEqual(in6_ptop(rx[IPv6].dst),
 606                          in6_ptop(dst_ip))
 607
 608         # and come from the router's link local
 609         self.assertTrue(in6_islladdr(rx[IPv6].src))
 610         self.assertEqual(in6_ptop(rx[IPv6].src),
 611                          in6_ptop(mk_ll_addr(intf.local_mac)))
 612
 613         # it should contain the links MTU
 614         ra = rx[ICMPv6ND_RA]
 615         self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
 616
 617         # it should contain the source's link layer address option
 618         sll = ra[ICMPv6NDOptSrcLLAddr]
 619         self.assertEqual(sll.lladdr, intf.local_mac)
 620
 621         if not pi_opt:
 622             # the RA should not contain prefix information
 623             self.assertFalse(ra.haslayer(
 624                 ICMPv6NDOptPrefixInfo))
 625         else:
 626             raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
 627
 628             # the options are nested in the scapy packet in way that i cannot
 629             # decipher how to decode. this 1st layer of option always returns
 630             # nested classes, so a direct obj1=obj2 comparison always fails.
 631             # however, the getlayer(.., 2) does give one instnace.
 632             # so we cheat here and construct a new opt instnace for comparison
 633             rd = ICMPv6NDOptPrefixInfo(
 634                 prefixlen=raos.prefixlen,
 635                 prefix=raos.prefix,
 636                 L=raos.L,
 637                 A=raos.A)
 638             if type(pi_opt) is list:
 639                 for ii in range(len(pi_opt)):
 640                     self.assertEqual(pi_opt[ii], rd)
 641                     rd = rx.getlayer(
 642                         ICMPv6NDOptPrefixInfo, ii + 2)
 643             else:
 644                 self.assertEqual(pi_opt, raos)
 645
 646     def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
 647                            filter_out_fn=is_ipv6_misc,
 648                            opt=None):
 649         intf.add_stream(pkts)
 650         self.pg_enable_capture(self.pg_interfaces)
 651         self.pg_start()
 652         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 653
 654         self.assertEqual(len(rx), 1)
 655         rx = rx[0]
 656         self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
 657
 658     def test_rs(self):
 659         """ IPv6 Router Solicitation Exceptions
 660
 661         Test scenario:
 662         """
 663
 664         #
 665         # Before we begin change the IPv6 RA responses to use the unicast
 666         # address - that way we will not confuse them with the periodic
 667         # RAs which go to the mcast address
 668         # Sit and wait for the first periodic RA.
 669         #
 670         # TODO
 671         #
 672         self.pg0.ip6_ra_config(send_unicast=1)
 673
 674         #
 675         # An RS from a link source address
 676         #  - expect an RA in return
 677         #
 678         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 679              IPv6(
 680                  dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
 681              ICMPv6ND_RS())
 682         pkts = [p]
 683         self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
 684
 685         #
 686         # For the next RS sent the RA should be rate limited
 687         #
 688         self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
 689
 690         #
 691         # When we reconfiure the IPv6 RA config, we reset the RA rate limiting,
 692         # so we need to do this before each test below so as not to drop
 693         # packets for rate limiting reasons. Test this works here.
 694         #
 695         self.pg0.ip6_ra_config(send_unicast=1)
 696         self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
 697
 698         #
 699         # An RS sent from a non-link local source
 700         #
 701         self.pg0.ip6_ra_config(send_unicast=1)
 702         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 703              IPv6(dst=self.pg0.local_ip6,
 704                   src="2002::ffff") /
 705              ICMPv6ND_RS())
 706         pkts = [p]
 707         self.send_and_assert_no_replies(self.pg0, pkts,
 708                                         "RS from non-link source")
 709
 710         #
 711         # Source an RS from a link local address
 712         #
 713         self.pg0.ip6_ra_config(send_unicast=1)
 714         ll = mk_ll_addr(self.pg0.remote_mac)
 715         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 716              IPv6(dst=self.pg0.local_ip6, src=ll) /
 717              ICMPv6ND_RS())
 718         pkts = [p]
 719         self.send_and_expect_ra(self.pg0, pkts,
 720                                 "RS sourced from link-local",
 721                                 dst_ip=ll)
 722
 723         #
 724         # Send the RS multicast
 725         #
 726         self.pg0.ip6_ra_config(send_unicast=1)
 727         dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
 728         ll = mk_ll_addr(self.pg0.remote_mac)
 729         p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
 730              IPv6(dst="ff02::2", src=ll) /
 731              ICMPv6ND_RS())
 732         pkts = [p]
 733         self.send_and_expect_ra(self.pg0, pkts,
 734                                 "RS sourced from link-local",
 735                                 dst_ip=ll)
 736
 737         #
 738         # Source from the unspecified address ::. This happens when the RS
 739         # is sent before the host has a configured address/sub-net,
 740         # i.e. auto-config. Since the sender has no IP address, the reply
 741         # comes back mcast - so the capture needs to not filter this.
 742         # If we happen to pick up the periodic RA at this point then so be it,
 743         # it's not an error.
 744         #
 745         self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
 746         p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
 747              IPv6(dst="ff02::2", src="::") /
 748              ICMPv6ND_RS())
 749         pkts = [p]
 750         self.send_and_expect_ra(self.pg0, pkts,
 751                                 "RS sourced from unspecified",
 752                                 dst_ip="ff02::1",
 753                                 filter_out_fn=None)
 754
 755         #
 756         # Configure The RA to announce the links prefix
 757         #
 758         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 759                                self.pg0.local_ip6_prefix_len)
 760
 761         #
 762         # RAs should now contain the prefix information option
 763         #
 764         opt = ICMPv6NDOptPrefixInfo(
 765             prefixlen=self.pg0.local_ip6_prefix_len,
 766             prefix=self.pg0.local_ip6,
 767             L=1,
 768             A=1)
 769
 770         self.pg0.ip6_ra_config(send_unicast=1)
 771         ll = mk_ll_addr(self.pg0.remote_mac)
 772         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 773              IPv6(dst=self.pg0.local_ip6, src=ll) /
 774              ICMPv6ND_RS())
 775         self.send_and_expect_ra(self.pg0, p,
 776                                 "RA with prefix-info",
 777                                 dst_ip=ll,
 778                                 opt=opt)
 779
 780         #
 781         # Change the prefix info to not off-link
 782         #  L-flag is clear
 783         #
 784         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 785                                self.pg0.local_ip6_prefix_len,
 786                                off_link=1)
 787
 788         opt = ICMPv6NDOptPrefixInfo(
 789             prefixlen=self.pg0.local_ip6_prefix_len,
 790             prefix=self.pg0.local_ip6,
 791             L=0,
 792             A=1)
 793
 794         self.pg0.ip6_ra_config(send_unicast=1)
 795         self.send_and_expect_ra(self.pg0, p,
 796                                 "RA with Prefix info with L-flag=0",
 797                                 dst_ip=ll,
 798                                 opt=opt)
 799
 800         #
 801         # Change the prefix info to not off-link, no-autoconfig
 802         #  L and A flag are clear in the advert
 803         #
 804         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 805                                self.pg0.local_ip6_prefix_len,
 806                                off_link=1,
 807                                no_autoconfig=1)
 808
 809         opt = ICMPv6NDOptPrefixInfo(
 810             prefixlen=self.pg0.local_ip6_prefix_len,
 811             prefix=self.pg0.local_ip6,
 812             L=0,
 813             A=0)
 814
 815         self.pg0.ip6_ra_config(send_unicast=1)
 816         self.send_and_expect_ra(self.pg0, p,
 817                                 "RA with Prefix info with A & L-flag=0",
 818                                 dst_ip=ll,
 819                                 opt=opt)
 820
 821         #
 822         # Change the flag settings back to the defaults
 823         #  L and A flag are set in the advert
 824         #
 825         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 826                                self.pg0.local_ip6_prefix_len)
 827
 828         opt = ICMPv6NDOptPrefixInfo(
 829             prefixlen=self.pg0.local_ip6_prefix_len,
 830             prefix=self.pg0.local_ip6,
 831             L=1,
 832             A=1)
 833
 834         self.pg0.ip6_ra_config(send_unicast=1)
 835         self.send_and_expect_ra(self.pg0, p,
 836                                 "RA with Prefix info",
 837                                 dst_ip=ll,
 838                                 opt=opt)
 839
 840         #
 841         # Change the prefix info to not off-link, no-autoconfig
 842         #  L and A flag are clear in the advert
 843         #
 844         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 845                                self.pg0.local_ip6_prefix_len,
 846                                off_link=1,
 847                                no_autoconfig=1)
 848
 849         opt = ICMPv6NDOptPrefixInfo(
 850             prefixlen=self.pg0.local_ip6_prefix_len,
 851             prefix=self.pg0.local_ip6,
 852             L=0,
 853             A=0)
 854
 855         self.pg0.ip6_ra_config(send_unicast=1)
 856         self.send_and_expect_ra(self.pg0, p,
 857                                 "RA with Prefix info with A & L-flag=0",
 858                                 dst_ip=ll,
 859                                 opt=opt)
 860
 861         #
 862         # Use the reset to defults option to revert to defaults
 863         #  L and A flag are clear in the advert
 864         #
 865         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 866                                self.pg0.local_ip6_prefix_len,
 867                                use_default=1)
 868
 869         opt = ICMPv6NDOptPrefixInfo(
 870             prefixlen=self.pg0.local_ip6_prefix_len,
 871             prefix=self.pg0.local_ip6,
 872             L=1,
 873             A=1)
 874
 875         self.pg0.ip6_ra_config(send_unicast=1)
 876         self.send_and_expect_ra(self.pg0, p,
 877                                 "RA with Prefix reverted to defaults",
 878                                 dst_ip=ll,
 879                                 opt=opt)
 880
 881         #
 882         # Advertise Another prefix. With no L-flag/A-flag
 883         #
 884         self.pg0.ip6_ra_prefix(self.pg1.local_ip6,
 885                                self.pg1.local_ip6_prefix_len,
 886                                off_link=1,
 887                                no_autoconfig=1)
 888
 889         opt = [ICMPv6NDOptPrefixInfo(
 890             prefixlen=self.pg0.local_ip6_prefix_len,
 891             prefix=self.pg0.local_ip6,
 892             L=1,
 893             A=1),
 894             ICMPv6NDOptPrefixInfo(
 895                 prefixlen=self.pg1.local_ip6_prefix_len,
 896                 prefix=self.pg1.local_ip6,
 897                 L=0,
 898                 A=0)]
 899
 900         self.pg0.ip6_ra_config(send_unicast=1)
 901         ll = mk_ll_addr(self.pg0.remote_mac)
 902         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 903              IPv6(dst=self.pg0.local_ip6, src=ll) /
 904              ICMPv6ND_RS())
 905         self.send_and_expect_ra(self.pg0, p,
 906                                 "RA with multiple Prefix infos",
 907                                 dst_ip=ll,
 908                                 opt=opt)
 909
 910         #
 911         # Remove the first refix-info - expect the second is still in the
 912         # advert
 913         #
 914         self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
 915                                self.pg0.local_ip6_prefix_len,
 916                                is_no=1)
 917
 918         opt = ICMPv6NDOptPrefixInfo(
 919             prefixlen=self.pg1.local_ip6_prefix_len,
 920             prefix=self.pg1.local_ip6,
 921             L=0,
 922             A=0)
 923
 924         self.pg0.ip6_ra_config(send_unicast=1)
 925         self.send_and_expect_ra(self.pg0, p,
 926                                 "RA with Prefix reverted to defaults",
 927                                 dst_ip=ll,
 928                                 opt=opt)
 929
 930         #
 931         # Remove the second prefix-info - expect no prefix-info i nthe adverts
 932         #
 933         self.pg0.ip6_ra_prefix(self.pg1.local_ip6,
 934                                self.pg1.local_ip6_prefix_len,
 935                                is_no=1)
 936
 937         self.pg0.ip6_ra_config(send_unicast=1)
 938         self.send_and_expect_ra(self.pg0, p,
 939                                 "RA with Prefix reverted to defaults",
 940                                 dst_ip=ll)
 941
 942         #
 943         # Reset the periodic advertisements back to default values
 944         #
 945         self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
 946
 947
 948 class TestICMPv6Echo(VppTestCase):
 949     """ ICMPv6 Echo Test Case """
 950
 951     def setUp(self):
 952         super(TestICMPv6Echo, self).setUp()
 953
 954         # create 1 pg interface
 955         self.create_pg_interfaces(range(1))
 956
 957         for i in self.pg_interfaces:
 958             i.admin_up()
 959             i.config_ip6()
 960             i.resolve_ndp()
 961
 962     def tearDown(self):
 963         super(TestICMPv6Echo, self).tearDown()
 964         for i in self.pg_interfaces:
 965             i.unconfig_ip6()
 966             i.ip6_disable()
 967             i.admin_down()
 968
 969     def test_icmpv6_echo(self):
 970         """ VPP replies to ICMPv6 Echo Request
 971
 972         Test scenario:
 973
 974             - Receive ICMPv6 Echo Request message on pg0 interface.
 975             - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
 976         """
 977
 978         icmpv6_id = 0xb
 979         icmpv6_seq = 5
 980         icmpv6_data = '\x0a' * 18
 981         p_echo_request = (Ether(src=self.pg0.remote_mac,
 982                                 dst=self.pg0.local_mac) /
 983                           IPv6(src=self.pg0.remote_ip6,
 984                                dst=self.pg0.local_ip6) /
 985                           ICMPv6EchoRequest(
 986                               id=icmpv6_id,
 987                               seq=icmpv6_seq,
 988                               data=icmpv6_data))
 989
 990         self.pg0.add_stream(p_echo_request)
 991         self.pg_enable_capture(self.pg_interfaces)
 992         self.pg_start()
 993
 994         rx = self.pg0.get_capture(1)
 995         rx = rx[0]
 996         ether = rx[Ether]
 997         ipv6 = rx[IPv6]
 998         icmpv6 = rx[ICMPv6EchoReply]
 999
1000         self.assertEqual(ether.src, self.pg0.local_mac)
1001         self.assertEqual(ether.dst, self.pg0.remote_mac)
1002
1003         self.assertEqual(ipv6.src, self.pg0.local_ip6)
1004         self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1005
1006         self.assertEqual(
1007             icmp6types[icmpv6.type], "Echo Reply")
1008         self.assertEqual(icmpv6.id, icmpv6_id)
1009         self.assertEqual(icmpv6.seq, icmpv6_seq)
1010         self.assertEqual(icmpv6.data, icmpv6_data)
1011
1012
1013 class TestIPv6RD(TestIPv6ND):
1014     """ IPv6 Router Discovery Test Case """
1015
1016     @classmethod
1017     def setUpClass(cls):
1018         super(TestIPv6RD, cls).setUpClass()
1019
1020     def setUp(self):
1021         super(TestIPv6RD, self).setUp()
1022
1023         # create 2 pg interfaces
1024         self.create_pg_interfaces(range(2))
1025
1026         self.interfaces = list(self.pg_interfaces)
1027
1028         # setup all interfaces
1029         for i in self.interfaces:
1030             i.admin_up()
1031             i.config_ip6()
1032
1033     def tearDown(self):
1034         for i in self.interfaces:
1035             i.unconfig_ip6()
1036             i.admin_down()
1037         super(TestIPv6RD, self).tearDown()
1038
1039     def test_rd_send_router_solicitation(self):
1040         """ Verify router solicitation packets """
1041
1042         count = 2
1043         self.pg_enable_capture(self.pg_interfaces)
1044         self.pg_start()
1045         self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1046                                                  mrc=count)
1047         rx_list = self.pg1.get_capture(count, timeout=3)
1048         self.assertEqual(len(rx_list), count)
1049         for packet in rx_list:
1050             self.assertEqual(packet.haslayer(IPv6), 1)
1051             self.assertEqual(packet[IPv6].haslayer(
1052                 ICMPv6ND_RS), 1)
1053             dst = ip6_normalize(packet[IPv6].dst)
1054             dst2 = ip6_normalize("ff02::2")
1055             self.assert_equal(dst, dst2)
1056             src = ip6_normalize(packet[IPv6].src)
1057             src2 = ip6_normalize(self.pg1.local_ip6_ll)
1058             self.assert_equal(src, src2)
1059             self.assertTrue(
1060                 bool(packet[ICMPv6ND_RS].haslayer(
1061                     ICMPv6NDOptSrcLLAddr)))
1062             self.assert_equal(
1063                 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1064                 self.pg1.local_mac)
1065
1066     def verify_prefix_info(self, reported_prefix, prefix_option):
1067         prefix = IPv6Network(
1068             text_type(prefix_option.getfieldval("prefix") +
1069                       "/" +
1070                       text_type(prefix_option.getfieldval("prefixlen"))),
1071             strict=False)
1072         self.assert_equal(reported_prefix.prefix.network_address,
1073                           prefix.network_address)
1074         L = prefix_option.getfieldval("L")
1075         A = prefix_option.getfieldval("A")
1076         option_flags = (L << 7) | (A << 6)
1077         self.assert_equal(reported_prefix.flags, option_flags)
1078         self.assert_equal(reported_prefix.valid_time,
1079                           prefix_option.getfieldval("validlifetime"))
1080         self.assert_equal(reported_prefix.preferred_time,
1081                           prefix_option.getfieldval("preferredlifetime"))
1082
1083     def test_rd_receive_router_advertisement(self):
1084         """ Verify events triggered by received RA packets """
1085
1086         self.vapi.want_ip6_ra_events()
1087
1088         prefix_info_1 = ICMPv6NDOptPrefixInfo(
1089             prefix="1::2",
1090             prefixlen=50,
1091             validlifetime=200,
1092             preferredlifetime=500,
1093             L=1,
1094             A=1,
1095         )
1096
1097         prefix_info_2 = ICMPv6NDOptPrefixInfo(
1098             prefix="7::4",
1099             prefixlen=20,
1100             validlifetime=70,
1101             preferredlifetime=1000,
1102             L=1,
1103             A=0,
1104         )
1105
1106         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1107              IPv6(dst=self.pg1.local_ip6_ll,
1108                   src=mk_ll_addr(self.pg1.remote_mac)) /
1109              ICMPv6ND_RA() /
1110              prefix_info_1 /
1111              prefix_info_2)
1112         self.pg1.add_stream([p])
1113         self.pg_start()
1114
1115         ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1116
1117         self.assert_equal(ev.current_hop_limit, 0)
1118         self.assert_equal(ev.flags, 8)
1119         self.assert_equal(ev.router_lifetime_in_sec, 1800)
1120         self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1121         self.assert_equal(
1122             ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1123
1124         self.assert_equal(ev.n_prefixes, 2)
1125
1126         self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1127         self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1128
1129
1130 class TestIPv6RDControlPlane(TestIPv6ND):
1131     """ IPv6 Router Discovery Control Plane Test Case """
1132
1133     @classmethod
1134     def setUpClass(cls):
1135         super(TestIPv6RDControlPlane, cls).setUpClass()
1136
1137     def setUp(self):
1138         super(TestIPv6RDControlPlane, self).setUp()
1139
1140         # create 1 pg interface
1141         self.create_pg_interfaces(range(1))
1142
1143         self.interfaces = list(self.pg_interfaces)
1144
1145         # setup all interfaces
1146         for i in self.interfaces:
1147             i.admin_up()
1148             i.config_ip6()
1149
1150     def tearDown(self):
1151         super(TestIPv6RDControlPlane, self).tearDown()
1152
1153     @staticmethod
1154     def create_ra_packet(pg, routerlifetime=None):
1155         src_ip = pg.remote_ip6_ll
1156         dst_ip = pg.local_ip6
1157         if routerlifetime is not None:
1158             ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1159         else:
1160             ra = ICMPv6ND_RA()
1161         p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1162              IPv6(dst=dst_ip, src=src_ip) / ra)
1163         return p
1164
1165     @staticmethod
1166     def get_default_routes(fib):
1167         list = []
1168         for entry in fib:
1169             if entry.address_length == 0:
1170                 for path in entry.path:
1171                     if path.sw_if_index != 0xFFFFFFFF:
1172                         defaut_route = {}
1173                         defaut_route['sw_if_index'] = path.sw_if_index
1174                         defaut_route['next_hop'] = path.next_hop
1175                         list.append(defaut_route)
1176         return list
1177
1178     @staticmethod
1179     def get_interface_addresses(fib, pg):
1180         list = []
1181         for entry in fib:
1182             if entry.address_length == 128:
1183                 path = entry.path[0]
1184                 if path.sw_if_index == pg.sw_if_index:
1185                     list.append(entry.address)
1186         return list
1187
1188     def test_all(self):
1189         """ Test handling of SLAAC addresses and default routes """
1190
1191         fib = self.vapi.ip6_fib_dump()
1192         default_routes = self.get_default_routes(fib)
1193         initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1194         self.assertEqual(default_routes, [])
1195         router_address = self.pg0.remote_ip6n_ll
1196
1197         self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1198
1199         self.sleep(0.1)
1200
1201         # send RA
1202         packet = (self.create_ra_packet(
1203             self.pg0) / ICMPv6NDOptPrefixInfo(
1204             prefix="1::",
1205             prefixlen=64,
1206             validlifetime=2,
1207             preferredlifetime=2,
1208             L=1,
1209             A=1,
1210         ) / ICMPv6NDOptPrefixInfo(
1211             prefix="7::",
1212             prefixlen=20,
1213             validlifetime=1500,
1214             preferredlifetime=1000,
1215             L=1,
1216             A=0,
1217         ))
1218         self.pg0.add_stream([packet])
1219         self.pg_start()
1220
1221         self.sleep(0.1)
1222
1223         fib = self.vapi.ip6_fib_dump()
1224
1225         # check FIB for new address
1226         addresses = set(self.get_interface_addresses(fib, self.pg0))
1227         new_addresses = addresses.difference(initial_addresses)
1228         self.assertEqual(len(new_addresses), 1)
1229         prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1230         self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1231
1232         # check FIB for new default route
1233         default_routes = self.get_default_routes(fib)
1234         self.assertEqual(len(default_routes), 1)
1235         dr = default_routes[0]
1236         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1237         self.assertEqual(dr['next_hop'], router_address)
1238
1239         # send RA to delete default route
1240         packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1241         self.pg0.add_stream([packet])
1242         self.pg_start()
1243
1244         self.sleep(0.1)
1245
1246         # check that default route is deleted
1247         fib = self.vapi.ip6_fib_dump()
1248         default_routes = self.get_default_routes(fib)
1249         self.assertEqual(len(default_routes), 0)
1250
1251         self.sleep(0.1)
1252
1253         # send RA
1254         packet = self.create_ra_packet(self.pg0)
1255         self.pg0.add_stream([packet])
1256         self.pg_start()
1257
1258         self.sleep(0.1)
1259
1260         # check FIB for new default route
1261         fib = self.vapi.ip6_fib_dump()
1262         default_routes = self.get_default_routes(fib)
1263         self.assertEqual(len(default_routes), 1)
1264         dr = default_routes[0]
1265         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1266         self.assertEqual(dr['next_hop'], router_address)
1267
1268         # send RA, updating router lifetime to 1s
1269         packet = self.create_ra_packet(self.pg0, 1)
1270         self.pg0.add_stream([packet])
1271         self.pg_start()
1272
1273         self.sleep(0.1)
1274
1275         # check that default route still exists
1276         fib = self.vapi.ip6_fib_dump()
1277         default_routes = self.get_default_routes(fib)
1278         self.assertEqual(len(default_routes), 1)
1279         dr = default_routes[0]
1280         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1281         self.assertEqual(dr['next_hop'], router_address)
1282
1283         self.sleep(1)
1284
1285         # check that default route is deleted
1286         fib = self.vapi.ip6_fib_dump()
1287         default_routes = self.get_default_routes(fib)
1288         self.assertEqual(len(default_routes), 0)
1289
1290         # check FIB still contains the SLAAC address
1291         addresses = set(self.get_interface_addresses(fib, self.pg0))
1292         new_addresses = addresses.difference(initial_addresses)
1293         self.assertEqual(len(new_addresses), 1)
1294         prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1295         self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1296
1297         self.sleep(1)
1298
1299         # check that SLAAC address is deleted
1300         fib = self.vapi.ip6_fib_dump()
1301         addresses = set(self.get_interface_addresses(fib, self.pg0))
1302         new_addresses = addresses.difference(initial_addresses)
1303         self.assertEqual(len(new_addresses), 0)
1304
1305
1306 class IPv6NDProxyTest(TestIPv6ND):
1307     """ IPv6 ND ProxyTest Case """
1308
1309     def setUp(self):
1310         super(IPv6NDProxyTest, self).setUp()
1311
1312         # create 3 pg interfaces
1313         self.create_pg_interfaces(range(3))
1314
1315         # pg0 is the master interface, with the configured subnet
1316         self.pg0.admin_up()
1317         self.pg0.config_ip6()
1318         self.pg0.resolve_ndp()
1319
1320         self.pg1.ip6_enable()
1321         self.pg2.ip6_enable()
1322
1323     def tearDown(self):
1324         super(IPv6NDProxyTest, self).tearDown()
1325
1326     def test_nd_proxy(self):
1327         """ IPv6 Proxy ND """
1328
1329         #
1330         # Generate some hosts in the subnet that we are proxying
1331         #
1332         self.pg0.generate_remote_hosts(8)
1333
1334         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1335         d = inet_ntop(AF_INET6, nsma)
1336
1337         #
1338         # Send an NS for one of those remote hosts on one of the proxy links
1339         # expect no response since it's from an address that is not
1340         # on the link that has the prefix configured
1341         #
1342         ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1343                   IPv6(dst=d,
1344                        src=self.pg0._remote_hosts[2].ip6) /
1345                   ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1346                   ICMPv6NDOptSrcLLAddr(
1347                       lladdr=self.pg0._remote_hosts[2].mac))
1348
1349         self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1350
1351         #
1352         # Add proxy support for the host
1353         #
1354         self.vapi.ip6_nd_proxy(
1355             inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1356             self.pg1.sw_if_index)
1357
1358         #
1359         # try that NS again. this time we expect an NA back
1360         #
1361         self.send_and_expect_na(self.pg1, ns_pg1,
1362                                 "NS to proxy entry",
1363                                 dst_ip=self.pg0._remote_hosts[2].ip6,
1364                                 tgt_ip=self.pg0.local_ip6)
1365
1366         #
1367         # ... and that we have an entry in the ND cache
1368         #
1369         self.assertTrue(find_nbr(self,
1370                                  self.pg1.sw_if_index,
1371                                  self.pg0._remote_hosts[2].ip6))
1372
1373         #
1374         # ... and we can route traffic to it
1375         #
1376         t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1377              IPv6(dst=self.pg0._remote_hosts[2].ip6,
1378                   src=self.pg0.remote_ip6) /
1379              inet6.UDP(sport=10000, dport=20000) /
1380              Raw('\xa5' * 100))
1381
1382         self.pg0.add_stream(t)
1383         self.pg_enable_capture(self.pg_interfaces)
1384         self.pg_start()
1385         rx = self.pg1.get_capture(1)
1386         rx = rx[0]
1387
1388         self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1389         self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1390
1391         self.assertEqual(rx[IPv6].src,
1392                          t[IPv6].src)
1393         self.assertEqual(rx[IPv6].dst,
1394                          t[IPv6].dst)
1395
1396         #
1397         # Test we proxy for the host on the main interface
1398         #
1399         ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1400                   IPv6(dst=d, src=self.pg0.remote_ip6) /
1401                   ICMPv6ND_NS(
1402                       tgt=self.pg0._remote_hosts[2].ip6) /
1403                   ICMPv6NDOptSrcLLAddr(
1404                       lladdr=self.pg0.remote_mac))
1405
1406         self.send_and_expect_na(self.pg0, ns_pg0,
1407                                 "NS to proxy entry on main",
1408                                 tgt_ip=self.pg0._remote_hosts[2].ip6,
1409                                 dst_ip=self.pg0.remote_ip6)
1410
1411         #
1412         # Setup and resolve proxy for another host on another interface
1413         #
1414         ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1415                   IPv6(dst=d,
1416                        src=self.pg0._remote_hosts[3].ip6) /
1417                   ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1418                   ICMPv6NDOptSrcLLAddr(
1419                       lladdr=self.pg0._remote_hosts[2].mac))
1420
1421         self.vapi.ip6_nd_proxy(
1422             inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1423             self.pg2.sw_if_index)
1424
1425         self.send_and_expect_na(self.pg2, ns_pg2,
1426                                 "NS to proxy entry other interface",
1427                                 dst_ip=self.pg0._remote_hosts[3].ip6,
1428                                 tgt_ip=self.pg0.local_ip6)
1429
1430         self.assertTrue(find_nbr(self,
1431                                  self.pg2.sw_if_index,
1432                                  self.pg0._remote_hosts[3].ip6))
1433
1434         #
1435         # hosts can communicate. pg2->pg1
1436         #
1437         t2 = (Ether(dst=self.pg2.local_mac,
1438                     src=self.pg0.remote_hosts[3].mac) /
1439               IPv6(dst=self.pg0._remote_hosts[2].ip6,
1440                    src=self.pg0._remote_hosts[3].ip6) /
1441               inet6.UDP(sport=10000, dport=20000) /
1442               Raw('\xa5' * 100))
1443
1444         self.pg2.add_stream(t2)
1445         self.pg_enable_capture(self.pg_interfaces)
1446         self.pg_start()
1447         rx = self.pg1.get_capture(1)
1448         rx = rx[0]
1449
1450         self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1451         self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1452
1453         self.assertEqual(rx[IPv6].src,
1454                          t2[IPv6].src)
1455         self.assertEqual(rx[IPv6].dst,
1456                          t2[IPv6].dst)
1457
1458         #
1459         # remove the proxy configs
1460         #
1461         self.vapi.ip6_nd_proxy(
1462             inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1463             self.pg1.sw_if_index,
1464             is_del=1)
1465         self.vapi.ip6_nd_proxy(
1466             inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1467             self.pg2.sw_if_index,
1468             is_del=1)
1469
1470         self.assertFalse(find_nbr(self,
1471                                   self.pg2.sw_if_index,
1472                                   self.pg0._remote_hosts[3].ip6))
1473         self.assertFalse(find_nbr(self,
1474                                   self.pg1.sw_if_index,
1475                                   self.pg0._remote_hosts[2].ip6))
1476
1477         #
1478         # no longer proxy-ing...
1479         #
1480         self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1481         self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1482         self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1483
1484         #
1485         # no longer forwarding. traffic generates NS out of the glean/main
1486         # interface
1487         #
1488         self.pg2.add_stream(t2)
1489         self.pg_enable_capture(self.pg_interfaces)
1490         self.pg_start()
1491
1492         rx = self.pg0.get_capture(1)
1493
1494         self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1495
1496
1497 class TestIPNull(VppTestCase):
1498     """ IPv6 routes via NULL """
1499
1500     def setUp(self):
1501         super(TestIPNull, self).setUp()
1502
1503         # create 2 pg interfaces
1504         self.create_pg_interfaces(range(1))
1505
1506         for i in self.pg_interfaces:
1507             i.admin_up()
1508             i.config_ip6()
1509             i.resolve_ndp()
1510
1511     def tearDown(self):
1512         super(TestIPNull, self).tearDown()
1513         for i in self.pg_interfaces:
1514             i.unconfig_ip6()
1515             i.admin_down()
1516
1517     def test_ip_null(self):
1518         """ IP NULL route """
1519
1520         p = (Ether(src=self.pg0.remote_mac,
1521                    dst=self.pg0.local_mac) /
1522              IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1523              inet6.UDP(sport=1234, dport=1234) /
1524              Raw('\xa5' * 100))
1525
1526         #
1527         # A route via IP NULL that will reply with ICMP unreachables
1528         #
1529         ip_unreach = VppIpRoute(self, "2001::", 64, [], is_unreach=1, is_ip6=1)
1530         ip_unreach.add_vpp_config()
1531
1532         self.pg0.add_stream(p)
1533         self.pg_enable_capture(self.pg_interfaces)
1534         self.pg_start()
1535
1536         rx = self.pg0.get_capture(1)
1537         rx = rx[0]
1538         icmp = rx[ICMPv6DestUnreach]
1539
1540         # 0 = "No route to destination"
1541         self.assertEqual(icmp.code, 0)
1542
1543         # ICMP is rate limited. pause a bit
1544         self.sleep(1)
1545
1546         #
1547         # A route via IP NULL that will reply with ICMP prohibited
1548         #
1549         ip_prohibit = VppIpRoute(self, "2001::1", 128, [],
1550                                  is_prohibit=1, is_ip6=1)
1551         ip_prohibit.add_vpp_config()
1552
1553         self.pg0.add_stream(p)
1554         self.pg_enable_capture(self.pg_interfaces)
1555         self.pg_start()
1556
1557         rx = self.pg0.get_capture(1)
1558         rx = rx[0]
1559         icmp = rx[ICMPv6DestUnreach]
1560
1561         # 1 = "Communication with destination administratively prohibited"
1562         self.assertEqual(icmp.code, 1)
1563
1564
1565 class TestIPDisabled(VppTestCase):
1566     """ IPv6 disabled """
1567
1568     def setUp(self):
1569         super(TestIPDisabled, self).setUp()
1570
1571         # create 2 pg interfaces
1572         self.create_pg_interfaces(range(2))
1573
1574         # PG0 is IP enalbed
1575         self.pg0.admin_up()
1576         self.pg0.config_ip6()
1577         self.pg0.resolve_ndp()
1578
1579         # PG 1 is not IP enabled
1580         self.pg1.admin_up()
1581
1582     def tearDown(self):
1583         super(TestIPDisabled, self).tearDown()
1584         for i in self.pg_interfaces:
1585             i.unconfig_ip4()
1586             i.admin_down()
1587
1588     def test_ip_disabled(self):
1589         """ IP Disabled """
1590
1591         #
1592         # An (S,G).
1593         # one accepting interface, pg0, 2 forwarding interfaces
1594         #
1595         route_ff_01 = VppIpMRoute(
1596             self,
1597             "::",
1598             "ffef::1", 128,
1599             MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
1600             [VppMRoutePath(self.pg1.sw_if_index,
1601                            MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
1602              VppMRoutePath(self.pg0.sw_if_index,
1603                            MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
1604             is_ip6=1)
1605         route_ff_01.add_vpp_config()
1606
1607         pu = (Ether(src=self.pg1.remote_mac,
1608                     dst=self.pg1.local_mac) /
1609               IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1610               inet6.UDP(sport=1234, dport=1234) /
1611               Raw('\xa5' * 100))
1612         pm = (Ether(src=self.pg1.remote_mac,
1613                     dst=self.pg1.local_mac) /
1614               IPv6(src="2001::1", dst="ffef::1") /
1615               inet6.UDP(sport=1234, dport=1234) /
1616               Raw('\xa5' * 100))
1617
1618         #
1619         # PG1 does not forward IP traffic
1620         #
1621         self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1622         self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1623
1624         #
1625         # IP enable PG1
1626         #
1627         self.pg1.config_ip6()
1628
1629         #
1630         # Now we get packets through
1631         #
1632         self.pg1.add_stream(pu)
1633         self.pg_enable_capture(self.pg_interfaces)
1634         self.pg_start()
1635         rx = self.pg0.get_capture(1)
1636
1637         self.pg1.add_stream(pm)
1638         self.pg_enable_capture(self.pg_interfaces)
1639         self.pg_start()
1640         rx = self.pg0.get_capture(1)
1641
1642         #
1643         # Disable PG1
1644         #
1645         self.pg1.unconfig_ip6()
1646
1647         #
1648         # PG1 does not forward IP traffic
1649         #
1650         self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1651         self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1652
1653
1654 class TestIP6LoadBalance(VppTestCase):
1655     """ IPv6 Load-Balancing """
1656
1657     def setUp(self):
1658         super(TestIP6LoadBalance, self).setUp()
1659
1660         self.create_pg_interfaces(range(5))
1661
1662         mpls_tbl = VppMplsTable(self, 0)
1663         mpls_tbl.add_vpp_config()
1664
1665         for i in self.pg_interfaces:
1666             i.admin_up()
1667             i.config_ip6()
1668             i.resolve_ndp()
1669             i.enable_mpls()
1670
1671     def tearDown(self):
1672         for i in self.pg_interfaces:
1673             i.unconfig_ip6()
1674             i.admin_down()
1675             i.disable_mpls()
1676         super(TestIP6LoadBalance, self).tearDown()
1677
1678     def pg_send(self, input, pkts):
1679         self.vapi.cli("clear trace")
1680         input.add_stream(pkts)
1681         self.pg_enable_capture(self.pg_interfaces)
1682         self.pg_start()
1683
1684     def send_and_expect_load_balancing(self, input, pkts, outputs):
1685         self.pg_send(input, pkts)
1686         for oo in outputs:
1687             rx = oo._get_capture(1)
1688             self.assertNotEqual(0, len(rx))
1689
1690     def send_and_expect_one_itf(self, input, pkts, itf):
1691         self.pg_send(input, pkts)
1692         rx = itf.get_capture(len(pkts))
1693
1694     def test_ip6_load_balance(self):
1695         """ IPv6 Load-Balancing """
1696
1697         #
1698         # An array of packets that differ only in the destination port
1699         #  - IP only
1700         #  - MPLS EOS
1701         #  - MPLS non-EOS
1702         #  - MPLS non-EOS with an entropy label
1703         #
1704         port_ip_pkts = []
1705         port_mpls_pkts = []
1706         port_mpls_neos_pkts = []
1707         port_ent_pkts = []
1708
1709         #
1710         # An array of packets that differ only in the source address
1711         #
1712         src_ip_pkts = []
1713         src_mpls_pkts = []
1714
1715         for ii in range(65):
1716             port_ip_hdr = (
1717                 IPv6(dst="3000::1", src="3000:1::1") /
1718                 inet6.UDP(sport=1234, dport=1234 + ii) /
1719                 Raw('\xa5' * 100))
1720             port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1721                                        dst=self.pg0.local_mac) /
1722                                  port_ip_hdr))
1723             port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1724                                          dst=self.pg0.local_mac) /
1725                                    MPLS(label=66, ttl=2) /
1726                                    port_ip_hdr))
1727             port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1728                                               dst=self.pg0.local_mac) /
1729                                         MPLS(label=67, ttl=2) /
1730                                         MPLS(label=77, ttl=2) /
1731                                         port_ip_hdr))
1732             port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1733                                         dst=self.pg0.local_mac) /
1734                                   MPLS(label=67, ttl=2) /
1735                                   MPLS(label=14, ttl=2) /
1736                                   MPLS(label=999, ttl=2) /
1737                                   port_ip_hdr))
1738             src_ip_hdr = (
1739                 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
1740                 inet6.UDP(sport=1234, dport=1234) /
1741                 Raw('\xa5' * 100))
1742             src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1743                                       dst=self.pg0.local_mac) /
1744                                 src_ip_hdr))
1745             src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1746                                         dst=self.pg0.local_mac) /
1747                                   MPLS(label=66, ttl=2) /
1748                                   src_ip_hdr))
1749
1750         #
1751         # A route for the IP pacekts
1752         #
1753         route_3000_1 = VppIpRoute(self, "3000::1", 128,
1754                                   [VppRoutePath(self.pg1.remote_ip6,
1755                                                 self.pg1.sw_if_index,
1756                                                 proto=DpoProto.DPO_PROTO_IP6),
1757                                    VppRoutePath(self.pg2.remote_ip6,
1758                                                 self.pg2.sw_if_index,
1759                                                 proto=DpoProto.DPO_PROTO_IP6)],
1760                                   is_ip6=1)
1761         route_3000_1.add_vpp_config()
1762
1763         #
1764         # a local-label for the EOS packets
1765         #
1766         binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
1767         binding.add_vpp_config()
1768
1769         #
1770         # An MPLS route for the non-EOS packets
1771         #
1772         route_67 = VppMplsRoute(self, 67, 0,
1773                                 [VppRoutePath(self.pg1.remote_ip6,
1774                                               self.pg1.sw_if_index,
1775                                               labels=[67],
1776                                               proto=DpoProto.DPO_PROTO_IP6),
1777                                  VppRoutePath(self.pg2.remote_ip6,
1778                                               self.pg2.sw_if_index,
1779                                               labels=[67],
1780                                               proto=DpoProto.DPO_PROTO_IP6)])
1781         route_67.add_vpp_config()
1782
1783         #
1784         # inject the packet on pg0 - expect load-balancing across the 2 paths
1785         #  - since the default hash config is to use IP src,dst and port
1786         #    src,dst
1787         # We are not going to ensure equal amounts of packets across each link,
1788         # since the hash algorithm is statistical and therefore this can never
1789         # be guaranteed. But wuth 64 different packets we do expect some
1790         # balancing. So instead just ensure there is traffic on each link.
1791         #
1792         self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
1793                                             [self.pg1, self.pg2])
1794         self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1795                                             [self.pg1, self.pg2])
1796         self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
1797                                             [self.pg1, self.pg2])
1798         self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1799                                             [self.pg1, self.pg2])
1800         self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
1801                                             [self.pg1, self.pg2])
1802
1803         #
1804         # The packets with Entropy label in should not load-balance,
1805         # since the Entorpy value is fixed.
1806         #
1807         self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
1808
1809         #
1810         # change the flow hash config so it's only IP src,dst
1811         #  - now only the stream with differing source address will
1812         #    load-balance
1813         #
1814         self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=0, dport=0)
1815
1816         self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1817                                             [self.pg1, self.pg2])
1818         self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1819                                             [self.pg1, self.pg2])
1820         self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
1821
1822         #
1823         # change the flow hash config back to defaults
1824         #
1825         self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=1, dport=1)
1826
1827         #
1828         # Recursive prefixes
1829         #  - testing that 2 stages of load-balancing occurs and there is no
1830         #    polarisation (i.e. only 2 of 4 paths are used)
1831         #
1832         port_pkts = []
1833         src_pkts = []
1834
1835         for ii in range(257):
1836             port_pkts.append((Ether(src=self.pg0.remote_mac,
1837                                     dst=self.pg0.local_mac) /
1838                               IPv6(dst="4000::1",
1839                                    src="4000:1::1") /
1840                               inet6.UDP(sport=1234,
1841                                         dport=1234 + ii) /
1842                               Raw('\xa5' * 100)))
1843             src_pkts.append((Ether(src=self.pg0.remote_mac,
1844                                    dst=self.pg0.local_mac) /
1845                              IPv6(dst="4000::1",
1846                                   src="4000:1::%d" % ii) /
1847                              inet6.UDP(sport=1234, dport=1234) /
1848                              Raw('\xa5' * 100)))
1849
1850         route_3000_2 = VppIpRoute(self, "3000::2", 128,
1851                                   [VppRoutePath(self.pg3.remote_ip6,
1852                                                 self.pg3.sw_if_index,
1853                                                 proto=DpoProto.DPO_PROTO_IP6),
1854                                    VppRoutePath(self.pg4.remote_ip6,
1855                                                 self.pg4.sw_if_index,
1856                                                 proto=DpoProto.DPO_PROTO_IP6)],
1857                                   is_ip6=1)
1858         route_3000_2.add_vpp_config()
1859
1860         route_4000_1 = VppIpRoute(self, "4000::1", 128,
1861                                   [VppRoutePath("3000::1",
1862                                                 0xffffffff,
1863                                                 proto=DpoProto.DPO_PROTO_IP6),
1864                                    VppRoutePath("3000::2",
1865                                                 0xffffffff,
1866                                                 proto=DpoProto.DPO_PROTO_IP6)],
1867                                   is_ip6=1)
1868         route_4000_1.add_vpp_config()
1869
1870         #
1871         # inject the packet on pg0 - expect load-balancing across all 4 paths
1872         #
1873         self.vapi.cli("clear trace")
1874         self.send_and_expect_load_balancing(self.pg0, port_pkts,
1875                                             [self.pg1, self.pg2,
1876                                              self.pg3, self.pg4])
1877         self.send_and_expect_load_balancing(self.pg0, src_pkts,
1878                                             [self.pg1, self.pg2,
1879                                              self.pg3, self.pg4])
1880
1881         #
1882         # Recursive prefixes
1883         #  - testing that 2 stages of load-balancing no choices
1884         #
1885         port_pkts = []
1886
1887         for ii in range(257):
1888             port_pkts.append((Ether(src=self.pg0.remote_mac,
1889                                     dst=self.pg0.local_mac) /
1890                               IPv6(dst="6000::1",
1891                                    src="6000:1::1") /
1892                               inet6.UDP(sport=1234,
1893                                         dport=1234 + ii) /
1894                               Raw('\xa5' * 100)))
1895
1896         route_5000_2 = VppIpRoute(self, "5000::2", 128,
1897                                   [VppRoutePath(self.pg3.remote_ip6,
1898                                                 self.pg3.sw_if_index,
1899                                                 proto=DpoProto.DPO_PROTO_IP6)],
1900                                   is_ip6=1)
1901         route_5000_2.add_vpp_config()
1902
1903         route_6000_1 = VppIpRoute(self, "6000::1", 128,
1904                                   [VppRoutePath("5000::2",
1905                                                 0xffffffff,
1906                                                 proto=DpoProto.DPO_PROTO_IP6)],
1907                                   is_ip6=1)
1908         route_6000_1.add_vpp_config()
1909
1910         #
1911         # inject the packet on pg0 - expect load-balancing across all 4 paths
1912         #
1913         self.vapi.cli("clear trace")
1914         self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
1915
1916
1917 class TestIP6Punt(VppTestCase):
1918     """ IPv6 Punt Police/Redirect """
1919
1920     def setUp(self):
1921         super(TestIP6Punt, self).setUp()
1922
1923         self.create_pg_interfaces(range(4))
1924
1925         for i in self.pg_interfaces:
1926             i.admin_up()
1927             i.config_ip6()
1928             i.resolve_ndp()
1929
1930     def tearDown(self):
1931         super(TestIP6Punt, self).tearDown()
1932         for i in self.pg_interfaces:
1933             i.unconfig_ip6()
1934             i.admin_down()
1935
1936     def test_ip_punt(self):
1937         """ IP6 punt police and redirect """
1938
1939         p = (Ether(src=self.pg0.remote_mac,
1940                    dst=self.pg0.local_mac) /
1941              IPv6(src=self.pg0.remote_ip6,
1942                   dst=self.pg0.local_ip6) /
1943              inet6.TCP(sport=1234, dport=1234) /
1944              Raw('\xa5' * 100))
1945
1946         pkts = p * 1025
1947
1948         #
1949         # Configure a punt redirect via pg1.
1950         #
1951         nh_addr = self.pg1.remote_ip6
1952         self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1953                                    self.pg1.sw_if_index,
1954                                    nh_addr)
1955
1956         self.send_and_expect(self.pg0, pkts, self.pg1)
1957
1958         #
1959         # add a policer
1960         #
1961         policer = self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1962                                             rate_type=1)
1963         self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
1964
1965         self.vapi.cli("clear trace")
1966         self.pg0.add_stream(pkts)
1967         self.pg_enable_capture(self.pg_interfaces)
1968         self.pg_start()
1969
1970         #
1971         # the number of packet recieved should be greater than 0,
1972         # but not equal to the number sent, since some were policed
1973         #
1974         rx = self.pg1._get_capture(1)
1975         self.assertGreater(len(rx), 0)
1976         self.assertLess(len(rx), len(pkts))
1977
1978         #
1979         # remove the policer. back to full rx
1980         #
1981         self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
1982         self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1983                                   rate_type=1, is_add=0)
1984         self.send_and_expect(self.pg0, pkts, self.pg1)
1985
1986         #
1987         # remove the redirect. expect full drop.
1988         #
1989         self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1990                                    self.pg1.sw_if_index,
1991                                    nh_addr,
1992                                    is_add=0)
1993         self.send_and_assert_no_replies(self.pg0, pkts,
1994                                         "IP no punt config")
1995
1996         #
1997         # Add a redirect that is not input port selective
1998         #
1999         self.vapi.ip_punt_redirect(0xffffffff,
2000                                    self.pg1.sw_if_index,
2001                                    nh_addr)
2002         self.send_and_expect(self.pg0, pkts, self.pg1)
2003
2004         self.vapi.ip_punt_redirect(0xffffffff,
2005                                    self.pg1.sw_if_index,
2006                                    nh_addr,
2007                                    is_add=0)
2008
2009     def test_ip_punt_dump(self):
2010         """ IP6 punt redirect dump"""
2011
2012         #
2013         # Configure a punt redirects
2014         #
2015         nh_addr = self.pg3.remote_ip6
2016         self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2017                                    self.pg3.sw_if_index,
2018                                    nh_addr)
2019         self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
2020                                    self.pg3.sw_if_index,
2021                                    nh_addr)
2022         self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
2023                                    self.pg3.sw_if_index,
2024                                    '0::0')
2025
2026         #
2027         # Dump pg0 punt redirects
2028         #
2029         punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index,
2030                                                 is_ipv6=1)
2031         for p in punts:
2032             self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
2033
2034         #
2035         # Dump punt redirects for all interfaces
2036         #
2037         punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2038         self.assertEqual(len(punts), 3)
2039         for p in punts:
2040             self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2041         self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2042         self.assertEqual(str(punts[2].punt.nh), '::')
2043
2044
2045 class TestIPDeag(VppTestCase):
2046     """ IPv6 Deaggregate Routes """
2047
2048     def setUp(self):
2049         super(TestIPDeag, self).setUp()
2050
2051         self.create_pg_interfaces(range(3))
2052
2053         for i in self.pg_interfaces:
2054             i.admin_up()
2055             i.config_ip6()
2056             i.resolve_ndp()
2057
2058     def tearDown(self):
2059         super(TestIPDeag, self).tearDown()
2060         for i in self.pg_interfaces:
2061             i.unconfig_ip6()
2062             i.admin_down()
2063
2064     def test_ip_deag(self):
2065         """ IP Deag Routes """
2066
2067         #
2068         # Create a table to be used for:
2069         #  1 - another destination address lookup
2070         #  2 - a source address lookup
2071         #
2072         table_dst = VppIpTable(self, 1, is_ip6=1)
2073         table_src = VppIpTable(self, 2, is_ip6=1)
2074         table_dst.add_vpp_config()
2075         table_src.add_vpp_config()
2076
2077         #
2078         # Add a route in the default table to point to a deag/
2079         # second lookup in each of these tables
2080         #
2081         route_to_dst = VppIpRoute(self, "1::1", 128,
2082                                   [VppRoutePath("::",
2083                                                 0xffffffff,
2084                                                 nh_table_id=1,
2085                                                 proto=DpoProto.DPO_PROTO_IP6)],
2086                                   is_ip6=1)
2087         route_to_src = VppIpRoute(self, "1::2", 128,
2088                                   [VppRoutePath("::",
2089                                                 0xffffffff,
2090                                                 nh_table_id=2,
2091                                                 is_source_lookup=1,
2092                                                 proto=DpoProto.DPO_PROTO_IP6)],
2093                                   is_ip6=1)
2094         route_to_dst.add_vpp_config()
2095         route_to_src.add_vpp_config()
2096
2097         #
2098         # packets to these destination are dropped, since they'll
2099         # hit the respective default routes in the second table
2100         #
2101         p_dst = (Ether(src=self.pg0.remote_mac,
2102                        dst=self.pg0.local_mac) /
2103                  IPv6(src="5::5", dst="1::1") /
2104                  inet6.TCP(sport=1234, dport=1234) /
2105                  Raw('\xa5' * 100))
2106         p_src = (Ether(src=self.pg0.remote_mac,
2107                        dst=self.pg0.local_mac) /
2108                  IPv6(src="2::2", dst="1::2") /
2109                  inet6.TCP(sport=1234, dport=1234) /
2110                  Raw('\xa5' * 100))
2111         pkts_dst = p_dst * 257
2112         pkts_src = p_src * 257
2113
2114         self.send_and_assert_no_replies(self.pg0, pkts_dst,
2115                                         "IP in dst table")
2116         self.send_and_assert_no_replies(self.pg0, pkts_src,
2117                                         "IP in src table")
2118
2119         #
2120         # add a route in the dst table to forward via pg1
2121         #
2122         route_in_dst = VppIpRoute(self, "1::1", 128,
2123                                   [VppRoutePath(self.pg1.remote_ip6,
2124                                                 self.pg1.sw_if_index,
2125                                                 proto=DpoProto.DPO_PROTO_IP6)],
2126                                   is_ip6=1,
2127                                   table_id=1)
2128         route_in_dst.add_vpp_config()
2129
2130         self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2131
2132         #
2133         # add a route in the src table to forward via pg2
2134         #
2135         route_in_src = VppIpRoute(self, "2::2", 128,
2136                                   [VppRoutePath(self.pg2.remote_ip6,
2137                                                 self.pg2.sw_if_index,
2138                                                 proto=DpoProto.DPO_PROTO_IP6)],
2139                                   is_ip6=1,
2140                                   table_id=2)
2141         route_in_src.add_vpp_config()
2142         self.send_and_expect(self.pg0, pkts_src, self.pg2)
2143
2144         #
2145         # loop in the lookup DP
2146         #
2147         route_loop = VppIpRoute(self, "3::3", 128,
2148                                 [VppRoutePath("::",
2149                                               0xffffffff,
2150                                               proto=DpoProto.DPO_PROTO_IP6)],
2151                                 is_ip6=1)
2152         route_loop.add_vpp_config()
2153
2154         p_l = (Ether(src=self.pg0.remote_mac,
2155                      dst=self.pg0.local_mac) /
2156                IPv6(src="3::4", dst="3::3") /
2157                inet6.TCP(sport=1234, dport=1234) /
2158                Raw('\xa5' * 100))
2159
2160         self.send_and_assert_no_replies(self.pg0, p_l * 257,
2161                                         "IP lookup loop")
2162
2163
2164 class TestIP6Input(VppTestCase):
2165     """ IPv6 Input Exception Test Cases """
2166
2167     def setUp(self):
2168         super(TestIP6Input, self).setUp()
2169
2170         self.create_pg_interfaces(range(2))
2171
2172         for i in self.pg_interfaces:
2173             i.admin_up()
2174             i.config_ip6()
2175             i.resolve_ndp()
2176
2177     def tearDown(self):
2178         super(TestIP6Input, self).tearDown()
2179         for i in self.pg_interfaces:
2180             i.unconfig_ip6()
2181             i.admin_down()
2182
2183     def test_ip_input_icmp_reply(self):
2184         """ IP6 Input Exception - Return ICMP (3,0) """
2185         #
2186         # hop limit - ICMP replies
2187         #
2188         p_version = (Ether(src=self.pg0.remote_mac,
2189                            dst=self.pg0.local_mac) /
2190                      IPv6(src=self.pg0.remote_ip6,
2191                           dst=self.pg1.remote_ip6,
2192                           hlim=1) /
2193                      inet6.UDP(sport=1234, dport=1234) /
2194                      Raw('\xa5' * 100))
2195
2196         rx = self.send_and_expect(self.pg0, p_version * 65, self.pg0)
2197         rx = rx[0]
2198         icmp = rx[ICMPv6TimeExceeded]
2199
2200         # 0: "hop limit exceeded in transit",
2201         self.assertEqual((icmp.type, icmp.code), (3, 0))
2202
2203     icmpv6_data = '\x0a' * 18
2204     all_0s = "::"
2205     all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2206
2207     @parameterized.expand([
2208         # Name, src, dst, l4proto, msg, timeout
2209         ("src='iface',   dst='iface'", None, None,
2210          inet6.UDP(sport=1234, dport=1234), "funky version", None),
2211         ("src='All 0's', dst='iface'", all_0s, None,
2212          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2213         ("src='iface',   dst='All 0's'", None, all_0s,
2214          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2215         ("src='All 1's', dst='iface'", all_1s, None,
2216          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2217         ("src='iface',   dst='All 1's'", None, all_1s,
2218          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2219         ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2220          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2221
2222     ])
2223     def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2224
2225         self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2226
2227         p_version = (Ether(src=self.pg0.remote_mac,
2228                            dst=self.pg0.local_mac) /
2229                      IPv6(src=src or self.pg0.remote_ip6,
2230                           dst=dst or self.pg1.remote_ip6,
2231                           version=3) /
2232                      l4 /
2233                      Raw('\xa5' * 100))
2234
2235         self.send_and_assert_no_replies(self.pg0, p_version * 65,
2236                                         remark=msg or "",
2237                                         timeout=timeout)
2238
2239
2240 if __name__ == '__main__':
2241     unittest.main(testRunner=VppTestRunner)