test/test_ip6.py

   1 #!/usr/bin/env python3
   2
   3 import socket
   4 from socket import inet_pton, inet_ntop
   5 import unittest
   6
   7 from parameterized import parameterized
   8 import scapy.compat
   9 import scapy.layers.inet6 as inet6
  10 from scapy.layers.inet import UDP, IP
  11 from scapy.contrib.mpls import MPLS
  12 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
  13     ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
  14     ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
  15     ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, \
  16     IPv6ExtHdrHopByHop, ICMPv6MLReport2, ICMPv6MLDMultAddrRec
  17 from scapy.layers.l2 import Ether, Dot1Q, GRE
  18 from scapy.packet import Raw
  19 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
  20     in6_mactoifaceid
  21 from six import moves
  22
  23 from framework import VppTestCase, VppTestRunner, tag_run_solo
  24 from util import ppp, ip6_normalize, mk_ll_addr
  25 from vpp_papi import VppEnum
  26 from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu
  27 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
  28     VppMRoutePath, VppMplsIpBind, \
  29     VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, \
  30     VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump, \
  31     VppIp6LinkLocalAddress, VppIpRouteV2
  32 from vpp_neighbor import find_nbr, VppNeighbor
  33 from vpp_ipip_tun_interface import VppIpIpTunInterface
  34 from vpp_pg_interface import is_ipv6_misc
  35 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
  36 from vpp_policer import VppPolicer, PolicerAction
  37 from ipaddress import IPv6Network, IPv6Address
  38 from vpp_gre_interface import VppGreInterface
  39 from vpp_teib import VppTeib
  40
  41 AF_INET6 = socket.AF_INET6
  42
  43 try:
  44     text_type = unicode
  45 except NameError:
  46     text_type = str
  47
  48 NUM_PKTS = 67
  49
  50
  51 class TestIPv6ND(VppTestCase):
  52     def validate_ra(self, intf, rx, dst_ip=None):
  53         if not dst_ip:
  54             dst_ip = intf.remote_ip6
  55
  56         # unicasted packets must come to the unicast mac
  57         self.assertEqual(rx[Ether].dst, intf.remote_mac)
  58
  59         # and from the router's MAC
  60         self.assertEqual(rx[Ether].src, intf.local_mac)
  61
  62         # the rx'd RA should be addressed to the sender's source
  63         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
  64         self.assertEqual(in6_ptop(rx[IPv6].dst),
  65                          in6_ptop(dst_ip))
  66
  67         # and come from the router's link local
  68         self.assertTrue(in6_islladdr(rx[IPv6].src))
  69         self.assertEqual(in6_ptop(rx[IPv6].src),
  70                          in6_ptop(mk_ll_addr(intf.local_mac)))
  71
  72     def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
  73         if not dst_ip:
  74             dst_ip = intf.remote_ip6
  75         if not tgt_ip:
  76             dst_ip = intf.local_ip6
  77
  78         # unicasted packets must come to the unicast mac
  79         self.assertEqual(rx[Ether].dst, intf.remote_mac)
  80
  81         # and from the router's MAC
  82         self.assertEqual(rx[Ether].src, intf.local_mac)
  83
  84         # the rx'd NA should be addressed to the sender's source
  85         self.assertTrue(rx.haslayer(ICMPv6ND_NA))
  86         self.assertEqual(in6_ptop(rx[IPv6].dst),
  87                          in6_ptop(dst_ip))
  88
  89         # and come from the target address
  90         self.assertEqual(
  91             in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
  92
  93         # Dest link-layer options should have the router's MAC
  94         dll = rx[ICMPv6NDOptDstLLAddr]
  95         self.assertEqual(dll.lladdr, intf.local_mac)
  96
  97     def validate_ns(self, intf, rx, tgt_ip):
  98         nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
  99         dst_ip = inet_ntop(AF_INET6, nsma)
 100
 101         # NS is broadcast
 102         self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
 103
 104         # and from the router's MAC
 105         self.assertEqual(rx[Ether].src, intf.local_mac)
 106
 107         # the rx'd NS should be addressed to an mcast address
 108         # derived from the target address
 109         self.assertEqual(
 110             in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
 111
 112         # expect the tgt IP in the NS header
 113         ns = rx[ICMPv6ND_NS]
 114         self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
 115
 116         # packet is from the router's local address
 117         self.assertEqual(
 118             in6_ptop(rx[IPv6].src), intf.local_ip6)
 119
 120         # Src link-layer options should have the router's MAC
 121         sll = rx[ICMPv6NDOptSrcLLAddr]
 122         self.assertEqual(sll.lladdr, intf.local_mac)
 123
 124     def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
 125                            filter_out_fn=is_ipv6_misc):
 126         intf.add_stream(pkts)
 127         self.pg_enable_capture(self.pg_interfaces)
 128         self.pg_start()
 129         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 130
 131         self.assertEqual(len(rx), 1)
 132         rx = rx[0]
 133         self.validate_ra(intf, rx, dst_ip)
 134
 135     def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
 136                            tgt_ip=None,
 137                            filter_out_fn=is_ipv6_misc):
 138         intf.add_stream(pkts)
 139         self.pg_enable_capture(self.pg_interfaces)
 140         self.pg_start()
 141         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 142
 143         self.assertEqual(len(rx), 1)
 144         rx = rx[0]
 145         self.validate_na(intf, rx, dst_ip, tgt_ip)
 146
 147     def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
 148                            filter_out_fn=is_ipv6_misc):
 149         self.vapi.cli("clear trace")
 150         tx_intf.add_stream(pkts)
 151         self.pg_enable_capture(self.pg_interfaces)
 152         self.pg_start()
 153         rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
 154
 155         self.assertEqual(len(rx), 1)
 156         rx = rx[0]
 157         self.validate_ns(rx_intf, rx, tgt_ip)
 158
 159     def verify_ip(self, rx, smac, dmac, sip, dip):
 160         ether = rx[Ether]
 161         self.assertEqual(ether.dst, dmac)
 162         self.assertEqual(ether.src, smac)
 163
 164         ip = rx[IPv6]
 165         self.assertEqual(ip.src, sip)
 166         self.assertEqual(ip.dst, dip)
 167
 168
 169 @tag_run_solo
 170 class TestIPv6(TestIPv6ND):
 171     """ IPv6 Test Case """
 172
 173     @classmethod
 174     def setUpClass(cls):
 175         super(TestIPv6, cls).setUpClass()
 176
 177     @classmethod
 178     def tearDownClass(cls):
 179         super(TestIPv6, cls).tearDownClass()
 180
 181     def setUp(self):
 182         """
 183         Perform test setup before test case.
 184
 185         **Config:**
 186             - create 3 pg interfaces
 187                 - untagged pg0 interface
 188                 - Dot1Q subinterface on pg1
 189                 - Dot1AD subinterface on pg2
 190             - setup interfaces:
 191                 - put it into UP state
 192                 - set IPv6 addresses
 193                 - resolve neighbor address using NDP
 194             - configure 200 fib entries
 195
 196         :ivar list interfaces: pg interfaces and subinterfaces.
 197         :ivar dict flows: IPv4 packet flows in test.
 198
 199         *TODO:* Create AD sub interface
 200         """
 201         super(TestIPv6, self).setUp()
 202
 203         # create 3 pg interfaces
 204         self.create_pg_interfaces(range(3))
 205
 206         # create 2 subinterfaces for p1 and pg2
 207         self.sub_interfaces = [
 208             VppDot1QSubint(self, self.pg1, 100),
 209             VppDot1QSubint(self, self.pg2, 200)
 210             # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
 211         ]
 212
 213         # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
 214         self.flows = dict()
 215         self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
 216         self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
 217         self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
 218
 219         # packet sizes
 220         self.pg_if_packet_sizes = [64, 1500, 9020]
 221
 222         self.interfaces = list(self.pg_interfaces)
 223         self.interfaces.extend(self.sub_interfaces)
 224
 225         # setup all interfaces
 226         for i in self.interfaces:
 227             i.admin_up()
 228             i.config_ip6()
 229             i.resolve_ndp()
 230
 231     def tearDown(self):
 232         """Run standard test teardown and log ``show ip6 neighbors``."""
 233         for i in self.interfaces:
 234             i.unconfig_ip6()
 235             i.admin_down()
 236         for i in self.sub_interfaces:
 237             i.remove_vpp_config()
 238
 239         super(TestIPv6, self).tearDown()
 240         if not self.vpp_dead:
 241             self.logger.info(self.vapi.cli("show ip6 neighbors"))
 242             # info(self.vapi.cli("show ip6 fib"))  # many entries
 243
 244     def modify_packet(self, src_if, packet_size, pkt):
 245         """Add load, set destination IP and extend packet to required packet
 246         size for defined interface.
 247
 248         :param VppInterface src_if: Interface to create packet for.
 249         :param int packet_size: Required packet size.
 250         :param Scapy pkt: Packet to be modified.
 251         """
 252         dst_if_idx = int(packet_size / 10 % 2)
 253         dst_if = self.flows[src_if][dst_if_idx]
 254         info = self.create_packet_info(src_if, dst_if)
 255         payload = self.info_to_payload(info)
 256         p = pkt / Raw(payload)
 257         p[IPv6].dst = dst_if.remote_ip6
 258         info.data = p.copy()
 259         if isinstance(src_if, VppSubInterface):
 260             p = src_if.add_dot1_layer(p)
 261         self.extend_packet(p, packet_size)
 262
 263         return p
 264
 265     def create_stream(self, src_if):
 266         """Create input packet stream for defined interface.
 267
 268         :param VppInterface src_if: Interface to create packet stream for.
 269         """
 270         hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
 271         pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
 272                     IPv6(src=src_if.remote_ip6) /
 273                     inet6.UDP(sport=1234, dport=1234))
 274
 275         pkts = [self.modify_packet(src_if, i, pkt_tmpl)
 276                 for i in moves.range(self.pg_if_packet_sizes[0],
 277                                      self.pg_if_packet_sizes[1], 10)]
 278         pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
 279                   for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
 280                                        self.pg_if_packet_sizes[2] + hdr_ext,
 281                                        50)]
 282         pkts.extend(pkts_b)
 283
 284         return pkts
 285
 286     def verify_capture(self, dst_if, capture):
 287         """Verify captured input packet stream for defined interface.
 288
 289         :param VppInterface dst_if: Interface to verify captured packet stream
 290                                     for.
 291         :param list capture: Captured packet stream.
 292         """
 293         self.logger.info("Verifying capture on interface %s" % dst_if.name)
 294         last_info = dict()
 295         for i in self.interfaces:
 296             last_info[i.sw_if_index] = None
 297         is_sub_if = False
 298         dst_sw_if_index = dst_if.sw_if_index
 299         if hasattr(dst_if, 'parent'):
 300             is_sub_if = True
 301         for packet in capture:
 302             if is_sub_if:
 303                 # Check VLAN tags and Ethernet header
 304                 packet = dst_if.remove_dot1_layer(packet)
 305             self.assertTrue(Dot1Q not in packet)
 306             try:
 307                 ip = packet[IPv6]
 308                 udp = packet[inet6.UDP]
 309                 payload_info = self.payload_to_info(packet[Raw])
 310                 packet_index = payload_info.index
 311                 self.assertEqual(payload_info.dst, dst_sw_if_index)
 312                 self.logger.debug(
 313                     "Got packet on port %s: src=%u (id=%u)" %
 314                     (dst_if.name, payload_info.src, packet_index))
 315                 next_info = self.get_next_packet_info_for_interface2(
 316                     payload_info.src, dst_sw_if_index,
 317                     last_info[payload_info.src])
 318                 last_info[payload_info.src] = next_info
 319                 self.assertTrue(next_info is not None)
 320                 self.assertEqual(packet_index, next_info.index)
 321                 saved_packet = next_info.data
 322                 # Check standard fields
 323                 self.assertEqual(
 324                     ip.src, saved_packet[IPv6].src)
 325                 self.assertEqual(
 326                     ip.dst, saved_packet[IPv6].dst)
 327                 self.assertEqual(
 328                     udp.sport, saved_packet[inet6.UDP].sport)
 329                 self.assertEqual(
 330                     udp.dport, saved_packet[inet6.UDP].dport)
 331             except:
 332                 self.logger.error(ppp("Unexpected or invalid packet:", packet))
 333                 raise
 334         for i in self.interfaces:
 335             remaining_packet = self.get_next_packet_info_for_interface2(
 336                 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
 337             self.assertTrue(remaining_packet is None,
 338                             "Interface %s: Packet expected from interface %s "
 339                             "didn't arrive" % (dst_if.name, i.name))
 340
 341     def test_next_header_anomaly(self):
 342         """ IPv6 next header anomaly test
 343
 344         Test scenario:
 345             - ipv6 next header field = Fragment Header (44)
 346             - next header is ICMPv6 Echo Request
 347             - wait for reassembly
 348         """
 349         pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
 350                IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) /
 351                ICMPv6EchoRequest())
 352
 353         self.pg0.add_stream(pkt)
 354         self.pg_start()
 355
 356         # wait for reassembly
 357         self.sleep(10)
 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
 467         #
 468         # send an NS from a link local address to the interface's global
 469         # address
 470         #
 471         p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
 472              IPv6(
 473                  dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
 474              ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
 475              ICMPv6NDOptSrcLLAddr(
 476                  lladdr=self.pg0.remote_mac))
 477
 478         self.send_and_expect_na(self.pg0, p,
 479                                 "NS from link-local",
 480                                 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
 481                                 tgt_ip=self.pg0.local_ip6)
 482
 483         #
 484         # we should have learned an ND entry for the peer's link-local
 485         # but not inserted a route to it in the FIB
 486         #
 487         self.assertTrue(find_nbr(self,
 488                                  self.pg0.sw_if_index,
 489                                  self.pg0._remote_hosts[2].ip6_ll))
 490         self.assertFalse(find_route(self,
 491                                     self.pg0._remote_hosts[2].ip6_ll,
 492                                     128))
 493
 494         #
 495         # An NS to the router's own Link-local
 496         #
 497         p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
 498              IPv6(
 499                  dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
 500              ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
 501              ICMPv6NDOptSrcLLAddr(
 502                  lladdr=self.pg0.remote_mac))
 503
 504         self.send_and_expect_na(self.pg0, p,
 505                                 "NS to/from link-local",
 506                                 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
 507                                 tgt_ip=self.pg0.local_ip6_ll)
 508
 509         #
 510         # do not respond to a NS for the peer's address
 511         #
 512         p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
 513              IPv6(dst=d,
 514                   src=self.pg0._remote_hosts[3].ip6_ll) /
 515              ICMPv6ND_NS(tgt=self.pg0._remote_hosts[3].ip6_ll) /
 516              ICMPv6NDOptSrcLLAddr(
 517                  lladdr=self.pg0.remote_mac))
 518
 519         self.send_and_assert_no_replies(self.pg0, p)
 520
 521         #
 522         # we should have learned an ND entry for the peer's link-local
 523         # but not inserted a route to it in the FIB
 524         #
 525         self.assertTrue(find_nbr(self,
 526                                  self.pg0.sw_if_index,
 527                                  self.pg0._remote_hosts[3].ip6_ll))
 528         self.assertFalse(find_route(self,
 529                                     self.pg0._remote_hosts[3].ip6_ll,
 530                                     128))
 531
 532     def test_ns_duplicates(self):
 533         """ ND Duplicates"""
 534
 535         #
 536         # Generate some hosts on the LAN
 537         #
 538         self.pg1.generate_remote_hosts(3)
 539
 540         #
 541         # Add host 1 on pg1 and pg2
 542         #
 543         ns_pg1 = VppNeighbor(self,
 544                              self.pg1.sw_if_index,
 545                              self.pg1.remote_hosts[1].mac,
 546                              self.pg1.remote_hosts[1].ip6)
 547         ns_pg1.add_vpp_config()
 548         ns_pg2 = VppNeighbor(self,
 549                              self.pg2.sw_if_index,
 550                              self.pg2.remote_mac,
 551                              self.pg1.remote_hosts[1].ip6)
 552         ns_pg2.add_vpp_config()
 553
 554         #
 555         # IP packet destined for pg1 remote host arrives on pg1 again.
 556         #
 557         p = (Ether(dst=self.pg0.local_mac,
 558                    src=self.pg0.remote_mac) /
 559              IPv6(src=self.pg0.remote_ip6,
 560                   dst=self.pg1.remote_hosts[1].ip6) /
 561              inet6.UDP(sport=1234, dport=1234) /
 562              Raw())
 563
 564         self.pg0.add_stream(p)
 565         self.pg_enable_capture(self.pg_interfaces)
 566         self.pg_start()
 567
 568         rx1 = self.pg1.get_capture(1)
 569
 570         self.verify_ip(rx1[0],
 571                        self.pg1.local_mac,
 572                        self.pg1.remote_hosts[1].mac,
 573                        self.pg0.remote_ip6,
 574                        self.pg1.remote_hosts[1].ip6)
 575
 576         #
 577         # remove the duplicate on pg1
 578         # packet stream should generate NSs out of pg1
 579         #
 580         ns_pg1.remove_vpp_config()
 581
 582         self.send_and_expect_ns(self.pg0, self.pg1,
 583                                 p, self.pg1.remote_hosts[1].ip6)
 584
 585         #
 586         # Add it back
 587         #
 588         ns_pg1.add_vpp_config()
 589
 590         self.pg0.add_stream(p)
 591         self.pg_enable_capture(self.pg_interfaces)
 592         self.pg_start()
 593
 594         rx1 = self.pg1.get_capture(1)
 595
 596         self.verify_ip(rx1[0],
 597                        self.pg1.local_mac,
 598                        self.pg1.remote_hosts[1].mac,
 599                        self.pg0.remote_ip6,
 600                        self.pg1.remote_hosts[1].ip6)
 601
 602     def validate_ra(self, intf, rx, dst_ip=None, src_ip=None,
 603                     mtu=9000, pi_opt=None):
 604         if not dst_ip:
 605             dst_ip = intf.remote_ip6
 606         if not src_ip:
 607             src_ip = mk_ll_addr(intf.local_mac)
 608
 609         # unicasted packets must come to the unicast mac
 610         self.assertEqual(rx[Ether].dst, intf.remote_mac)
 611
 612         # and from the router's MAC
 613         self.assertEqual(rx[Ether].src, intf.local_mac)
 614
 615         # the rx'd RA should be addressed to the sender's source
 616         self.assertTrue(rx.haslayer(ICMPv6ND_RA))
 617         self.assertEqual(in6_ptop(rx[IPv6].dst),
 618                          in6_ptop(dst_ip))
 619
 620         # and come from the router's link local
 621         self.assertTrue(in6_islladdr(rx[IPv6].src))
 622         self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(src_ip))
 623
 624         # it should contain the links MTU
 625         ra = rx[ICMPv6ND_RA]
 626         self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
 627
 628         # it should contain the source's link layer address option
 629         sll = ra[ICMPv6NDOptSrcLLAddr]
 630         self.assertEqual(sll.lladdr, intf.local_mac)
 631
 632         if not pi_opt:
 633             # the RA should not contain prefix information
 634             self.assertFalse(ra.haslayer(
 635                 ICMPv6NDOptPrefixInfo))
 636         else:
 637             raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
 638
 639             # the options are nested in the scapy packet in way that i cannot
 640             # decipher how to decode. this 1st layer of option always returns
 641             # nested classes, so a direct obj1=obj2 comparison always fails.
 642             # however, the getlayer(.., 2) does give one instance.
 643             # so we cheat here and construct a new opt instance for comparison
 644             rd = ICMPv6NDOptPrefixInfo(
 645                 prefixlen=raos.prefixlen,
 646                 prefix=raos.prefix,
 647                 L=raos.L,
 648                 A=raos.A)
 649             if type(pi_opt) is list:
 650                 for ii in range(len(pi_opt)):
 651                     self.assertEqual(pi_opt[ii], rd)
 652                     rd = rx.getlayer(
 653                         ICMPv6NDOptPrefixInfo, ii + 2)
 654             else:
 655                 self.assertEqual(pi_opt, raos, 'Expected: %s, received: %s'
 656                                  % (pi_opt.show(dump=True),
 657                                     raos.show(dump=True)))
 658
 659     def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
 660                            filter_out_fn=is_ipv6_misc,
 661                            opt=None,
 662                            src_ip=None):
 663         self.vapi.cli("clear trace")
 664         intf.add_stream(pkts)
 665         self.pg_enable_capture(self.pg_interfaces)
 666         self.pg_start()
 667         rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
 668
 669         self.assertEqual(len(rx), 1)
 670         rx = rx[0]
 671         self.validate_ra(intf, rx, dst_ip, src_ip=src_ip, pi_opt=opt)
 672
 673     def test_rs(self):
 674         """ IPv6 Router Solicitation Exceptions
 675
 676         Test scenario:
 677         """
 678
 679         #
 680         # Before we begin change the IPv6 RA responses to use the unicast
 681         # address - that way we will not confuse them with the periodic
 682         # RAs which go to the mcast address
 683         # Sit and wait for the first periodic RA.
 684         #
 685         # TODO
 686         #
 687         self.pg0.ip6_ra_config(send_unicast=1)
 688
 689         #
 690         # An RS from a link source address
 691         #  - expect an RA in return
 692         #
 693         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 694              IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
 695              ICMPv6ND_RS())
 696         pkts = [p]
 697         self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
 698
 699         #
 700         # For the next RS sent the RA should be rate limited
 701         #
 702         self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
 703
 704         #
 705         # When we reconfigure the IPv6 RA config,
 706         # we reset the RA rate limiting,
 707         # so we need to do this before each test below so as not to drop
 708         # packets for rate limiting reasons. Test this works here.
 709         #
 710         self.pg0.ip6_ra_config(send_unicast=1)
 711         self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
 712
 713         #
 714         # An RS sent from a non-link local source
 715         #
 716         self.pg0.ip6_ra_config(send_unicast=1)
 717         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 718              IPv6(dst=self.pg0.local_ip6,
 719                   src="2002::ffff") /
 720              ICMPv6ND_RS())
 721         pkts = [p]
 722         self.send_and_assert_no_replies(self.pg0, pkts,
 723                                         "RS from non-link source")
 724
 725         #
 726         # Source an RS from a link local address
 727         #
 728         self.pg0.ip6_ra_config(send_unicast=1)
 729         ll = mk_ll_addr(self.pg0.remote_mac)
 730         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 731              IPv6(dst=self.pg0.local_ip6, src=ll) /
 732              ICMPv6ND_RS())
 733         pkts = [p]
 734         self.send_and_expect_ra(self.pg0, pkts,
 735                                 "RS sourced from link-local",
 736                                 dst_ip=ll)
 737
 738         #
 739         # Send the RS multicast
 740         #
 741         self.pg0.ip6_ra_config(send_unicast=1)
 742         dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
 743         ll = mk_ll_addr(self.pg0.remote_mac)
 744         p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
 745              IPv6(dst="ff02::2", src=ll) /
 746              ICMPv6ND_RS())
 747         pkts = [p]
 748         self.send_and_expect_ra(self.pg0, pkts,
 749                                 "RS sourced from link-local",
 750                                 dst_ip=ll)
 751
 752         #
 753         # Source from the unspecified address ::. This happens when the RS
 754         # is sent before the host has a configured address/sub-net,
 755         # i.e. auto-config. Since the sender has no IP address, the reply
 756         # comes back mcast - so the capture needs to not filter this.
 757         # If we happen to pick up the periodic RA at this point then so be it,
 758         # it's not an error.
 759         #
 760         self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
 761         p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
 762              IPv6(dst="ff02::2", src="::") /
 763              ICMPv6ND_RS())
 764         pkts = [p]
 765         self.send_and_expect_ra(self.pg0, pkts,
 766                                 "RS sourced from unspecified",
 767                                 dst_ip="ff02::1",
 768                                 filter_out_fn=None)
 769
 770         #
 771         # Configure The RA to announce the links prefix
 772         #
 773         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 774                                self.pg0.local_ip6_prefix_len))
 775
 776         #
 777         # RAs should now contain the prefix information option
 778         #
 779         opt = ICMPv6NDOptPrefixInfo(
 780             prefixlen=self.pg0.local_ip6_prefix_len,
 781             prefix=self.pg0.local_ip6,
 782             L=1,
 783             A=1)
 784
 785         self.pg0.ip6_ra_config(send_unicast=1)
 786         ll = mk_ll_addr(self.pg0.remote_mac)
 787         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 788              IPv6(dst=self.pg0.local_ip6, src=ll) /
 789              ICMPv6ND_RS())
 790         self.send_and_expect_ra(self.pg0, p,
 791                                 "RA with prefix-info",
 792                                 dst_ip=ll,
 793                                 opt=opt)
 794
 795         #
 796         # Change the prefix info to not off-link
 797         #  L-flag is clear
 798         #
 799         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 800                                self.pg0.local_ip6_prefix_len),
 801                                off_link=1)
 802
 803         opt = ICMPv6NDOptPrefixInfo(
 804             prefixlen=self.pg0.local_ip6_prefix_len,
 805             prefix=self.pg0.local_ip6,
 806             L=0,
 807             A=1)
 808
 809         self.pg0.ip6_ra_config(send_unicast=1)
 810         self.send_and_expect_ra(self.pg0, p,
 811                                 "RA with Prefix info with L-flag=0",
 812                                 dst_ip=ll,
 813                                 opt=opt)
 814
 815         #
 816         # Change the prefix info to not off-link, no-autoconfig
 817         #  L and A flag are clear in the advert
 818         #
 819         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 820                                self.pg0.local_ip6_prefix_len),
 821                                off_link=1,
 822                                no_autoconfig=1)
 823
 824         opt = ICMPv6NDOptPrefixInfo(
 825             prefixlen=self.pg0.local_ip6_prefix_len,
 826             prefix=self.pg0.local_ip6,
 827             L=0,
 828             A=0)
 829
 830         self.pg0.ip6_ra_config(send_unicast=1)
 831         self.send_and_expect_ra(self.pg0, p,
 832                                 "RA with Prefix info with A & L-flag=0",
 833                                 dst_ip=ll,
 834                                 opt=opt)
 835
 836         #
 837         # Change the flag settings back to the defaults
 838         #  L and A flag are set in the advert
 839         #
 840         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 841                                self.pg0.local_ip6_prefix_len))
 842
 843         opt = ICMPv6NDOptPrefixInfo(
 844             prefixlen=self.pg0.local_ip6_prefix_len,
 845             prefix=self.pg0.local_ip6,
 846             L=1,
 847             A=1)
 848
 849         self.pg0.ip6_ra_config(send_unicast=1)
 850         self.send_and_expect_ra(self.pg0, p,
 851                                 "RA with Prefix info",
 852                                 dst_ip=ll,
 853                                 opt=opt)
 854
 855         #
 856         # Change the prefix info to not off-link, no-autoconfig
 857         #  L and A flag are clear in the advert
 858         #
 859         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 860                                self.pg0.local_ip6_prefix_len),
 861                                off_link=1,
 862                                no_autoconfig=1)
 863
 864         opt = ICMPv6NDOptPrefixInfo(
 865             prefixlen=self.pg0.local_ip6_prefix_len,
 866             prefix=self.pg0.local_ip6,
 867             L=0,
 868             A=0)
 869
 870         self.pg0.ip6_ra_config(send_unicast=1)
 871         self.send_and_expect_ra(self.pg0, p,
 872                                 "RA with Prefix info with A & L-flag=0",
 873                                 dst_ip=ll,
 874                                 opt=opt)
 875
 876         #
 877         # Use the reset to defaults option to revert to defaults
 878         #  L and A flag are clear in the advert
 879         #
 880         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 881                                self.pg0.local_ip6_prefix_len),
 882                                use_default=1)
 883
 884         opt = ICMPv6NDOptPrefixInfo(
 885             prefixlen=self.pg0.local_ip6_prefix_len,
 886             prefix=self.pg0.local_ip6,
 887             L=1,
 888             A=1)
 889
 890         self.pg0.ip6_ra_config(send_unicast=1)
 891         self.send_and_expect_ra(self.pg0, p,
 892                                 "RA with Prefix reverted to defaults",
 893                                 dst_ip=ll,
 894                                 opt=opt)
 895
 896         #
 897         # Advertise Another prefix. With no L-flag/A-flag
 898         #
 899         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
 900                                self.pg1.local_ip6_prefix_len),
 901                                off_link=1,
 902                                no_autoconfig=1)
 903
 904         opt = [ICMPv6NDOptPrefixInfo(
 905             prefixlen=self.pg0.local_ip6_prefix_len,
 906             prefix=self.pg0.local_ip6,
 907             L=1,
 908             A=1),
 909             ICMPv6NDOptPrefixInfo(
 910                 prefixlen=self.pg1.local_ip6_prefix_len,
 911                 prefix=self.pg1.local_ip6,
 912                 L=0,
 913                 A=0)]
 914
 915         self.pg0.ip6_ra_config(send_unicast=1)
 916         ll = mk_ll_addr(self.pg0.remote_mac)
 917         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 918              IPv6(dst=self.pg0.local_ip6, src=ll) /
 919              ICMPv6ND_RS())
 920         self.send_and_expect_ra(self.pg0, p,
 921                                 "RA with multiple Prefix infos",
 922                                 dst_ip=ll,
 923                                 opt=opt)
 924
 925         #
 926         # Remove the first prefix-info - expect the second is still in the
 927         # advert
 928         #
 929         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
 930                                self.pg0.local_ip6_prefix_len),
 931                                is_no=1)
 932
 933         opt = ICMPv6NDOptPrefixInfo(
 934             prefixlen=self.pg1.local_ip6_prefix_len,
 935             prefix=self.pg1.local_ip6,
 936             L=0,
 937             A=0)
 938
 939         self.pg0.ip6_ra_config(send_unicast=1)
 940         self.send_and_expect_ra(self.pg0, p,
 941                                 "RA with Prefix reverted to defaults",
 942                                 dst_ip=ll,
 943                                 opt=opt)
 944
 945         #
 946         # Remove the second prefix-info - expect no prefix-info in the adverts
 947         #
 948         self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
 949                                self.pg1.local_ip6_prefix_len),
 950                                is_no=1)
 951
 952         #
 953         # change the link's link local, so we know that works too.
 954         #
 955         self.vapi.sw_interface_ip6_set_link_local_address(
 956             sw_if_index=self.pg0.sw_if_index,
 957             ip="fe80::88")
 958
 959         self.pg0.ip6_ra_config(send_unicast=1)
 960         self.send_and_expect_ra(self.pg0, p,
 961                                 "RA with Prefix reverted to defaults",
 962                                 dst_ip=ll,
 963                                 src_ip="fe80::88")
 964
 965         #
 966         # Reset the periodic advertisements back to default values
 967         #
 968         self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
 969
 970     def test_mld(self):
 971         """ MLD Report """
 972         #
 973         # test one MLD is sent after applying an IPv6 Address on an interface
 974         #
 975         self.pg_enable_capture(self.pg_interfaces)
 976         self.pg_start()
 977
 978         subitf = VppDot1QSubint(self, self.pg1, 99)
 979
 980         subitf.admin_up()
 981         subitf.config_ip6()
 982
 983         rxs = self.pg1._get_capture(timeout=4, filter_out_fn=None)
 984
 985         #
 986         # hunt for the MLD on vlan 99
 987         #
 988         for rx in rxs:
 989             # make sure ipv6 packets with hop by hop options have
 990             # correct checksums
 991             self.assert_packet_checksums_valid(rx)
 992             if rx.haslayer(IPv6ExtHdrHopByHop) and \
 993                rx.haslayer(Dot1Q) and \
 994                rx[Dot1Q].vlan == 99:
 995                 mld = rx[ICMPv6MLReport2]
 996
 997         self.assertEqual(mld.records_number, 4)
 998
 999
1000 class TestIPv6RouteLookup(VppTestCase):
1001     """ IPv6 Route Lookup Test Case """
1002     routes = []
1003
1004     def route_lookup(self, prefix, exact):
1005         return self.vapi.api(self.vapi.papi.ip_route_lookup,
1006                              {
1007                                  'table_id': 0,
1008                                  'exact': exact,
1009                                  'prefix': prefix,
1010                              })
1011
1012     @classmethod
1013     def setUpClass(cls):
1014         super(TestIPv6RouteLookup, cls).setUpClass()
1015
1016     @classmethod
1017     def tearDownClass(cls):
1018         super(TestIPv6RouteLookup, cls).tearDownClass()
1019
1020     def setUp(self):
1021         super(TestIPv6RouteLookup, self).setUp()
1022
1023         drop_nh = VppRoutePath("::1", 0xffffffff,
1024                                type=FibPathType.FIB_PATH_TYPE_DROP)
1025
1026         # Add 3 routes
1027         r = VppIpRoute(self, "2001:1111::", 32, [drop_nh])
1028         r.add_vpp_config()
1029         self.routes.append(r)
1030
1031         r = VppIpRoute(self, "2001:1111:2222::", 48, [drop_nh])
1032         r.add_vpp_config()
1033         self.routes.append(r)
1034
1035         r = VppIpRoute(self, "2001:1111:2222::1", 128, [drop_nh])
1036         r.add_vpp_config()
1037         self.routes.append(r)
1038
1039     def tearDown(self):
1040         # Remove the routes we added
1041         for r in self.routes:
1042             r.remove_vpp_config()
1043
1044         super(TestIPv6RouteLookup, self).tearDown()
1045
1046     def test_exact_match(self):
1047         # Verify we find the host route
1048         prefix = "2001:1111:2222::1/128"
1049         result = self.route_lookup(prefix, True)
1050         assert (prefix == str(result.route.prefix))
1051
1052         # Verify we find a middle prefix route
1053         prefix = "2001:1111:2222::/48"
1054         result = self.route_lookup(prefix, True)
1055         assert (prefix == str(result.route.prefix))
1056
1057         # Verify we do not find an available LPM.
1058         with self.vapi.assert_negative_api_retval():
1059             self.route_lookup("2001::2/128", True)
1060
1061     def test_longest_prefix_match(self):
1062         # verify we find lpm
1063         lpm_prefix = "2001:1111:2222::/48"
1064         result = self.route_lookup("2001:1111:2222::2/128", False)
1065         assert (lpm_prefix == str(result.route.prefix))
1066
1067         # Verify we find the exact when not requested
1068         result = self.route_lookup(lpm_prefix, False)
1069         assert (lpm_prefix == str(result.route.prefix))
1070
1071         # Can't seem to delete the default route so no negative LPM test.
1072
1073
1074 class TestIPv6IfAddrRoute(VppTestCase):
1075     """ IPv6 Interface Addr Route Test Case """
1076
1077     @classmethod
1078     def setUpClass(cls):
1079         super(TestIPv6IfAddrRoute, cls).setUpClass()
1080
1081     @classmethod
1082     def tearDownClass(cls):
1083         super(TestIPv6IfAddrRoute, cls).tearDownClass()
1084
1085     def setUp(self):
1086         super(TestIPv6IfAddrRoute, self).setUp()
1087
1088         # create 1 pg interface
1089         self.create_pg_interfaces(range(1))
1090
1091         for i in self.pg_interfaces:
1092             i.admin_up()
1093             i.config_ip6()
1094             i.resolve_ndp()
1095
1096     def tearDown(self):
1097         super(TestIPv6IfAddrRoute, self).tearDown()
1098         for i in self.pg_interfaces:
1099             i.unconfig_ip6()
1100             i.admin_down()
1101
1102     def test_ipv6_ifaddrs_same_prefix(self):
1103         """ IPv6 Interface Addresses Same Prefix test
1104
1105         Test scenario:
1106
1107             - Verify no route in FIB for prefix 2001:10::/64
1108             - Configure IPv4 address 2001:10::10/64  on an interface
1109             - Verify route in FIB for prefix 2001:10::/64
1110             - Configure IPv4 address 2001:10::20/64 on an interface
1111             - Delete 2001:10::10/64 from interface
1112             - Verify route in FIB for prefix 2001:10::/64
1113             - Delete 2001:10::20/64 from interface
1114             - Verify no route in FIB for prefix 2001:10::/64
1115         """
1116
1117         addr1 = "2001:10::10"
1118         addr2 = "2001:10::20"
1119
1120         if_addr1 = VppIpInterfaceAddress(self, self.pg0, addr1, 64)
1121         if_addr2 = VppIpInterfaceAddress(self, self.pg0, addr2, 64)
1122         self.assertFalse(if_addr1.query_vpp_config())
1123         self.assertFalse(find_route(self, addr1, 128))
1124         self.assertFalse(find_route(self, addr2, 128))
1125
1126         # configure first address, verify route present
1127         if_addr1.add_vpp_config()
1128         self.assertTrue(if_addr1.query_vpp_config())
1129         self.assertTrue(find_route(self, addr1, 128))
1130         self.assertFalse(find_route(self, addr2, 128))
1131
1132         # configure second address, delete first, verify route not removed
1133         if_addr2.add_vpp_config()
1134         if_addr1.remove_vpp_config()
1135         self.assertFalse(if_addr1.query_vpp_config())
1136         self.assertTrue(if_addr2.query_vpp_config())
1137         self.assertFalse(find_route(self, addr1, 128))
1138         self.assertTrue(find_route(self, addr2, 128))
1139
1140         # delete second address, verify route removed
1141         if_addr2.remove_vpp_config()
1142         self.assertFalse(if_addr1.query_vpp_config())
1143         self.assertFalse(find_route(self, addr1, 128))
1144         self.assertFalse(find_route(self, addr2, 128))
1145
1146     def test_ipv6_ifaddr_del(self):
1147         """ Delete an interface address that does not exist """
1148
1149         loopbacks = self.create_loopback_interfaces(1)
1150         lo = self.lo_interfaces[0]
1151
1152         lo.config_ip6()
1153         lo.admin_up()
1154
1155         #
1156         # try and remove pg0's subnet from lo
1157         #
1158         with self.vapi.assert_negative_api_retval():
1159             self.vapi.sw_interface_add_del_address(
1160                 sw_if_index=lo.sw_if_index,
1161                 prefix=self.pg0.local_ip6_prefix,
1162                 is_add=0)
1163
1164
1165 class TestICMPv6Echo(VppTestCase):
1166     """ ICMPv6 Echo Test Case """
1167
1168     @classmethod
1169     def setUpClass(cls):
1170         super(TestICMPv6Echo, cls).setUpClass()
1171
1172     @classmethod
1173     def tearDownClass(cls):
1174         super(TestICMPv6Echo, cls).tearDownClass()
1175
1176     def setUp(self):
1177         super(TestICMPv6Echo, self).setUp()
1178
1179         # create 1 pg interface
1180         self.create_pg_interfaces(range(1))
1181
1182         for i in self.pg_interfaces:
1183             i.admin_up()
1184             i.config_ip6()
1185             i.resolve_ndp(link_layer=True)
1186             i.resolve_ndp()
1187
1188     def tearDown(self):
1189         super(TestICMPv6Echo, self).tearDown()
1190         for i in self.pg_interfaces:
1191             i.unconfig_ip6()
1192             i.admin_down()
1193
1194     def test_icmpv6_echo(self):
1195         """ VPP replies to ICMPv6 Echo Request
1196
1197         Test scenario:
1198
1199             - Receive ICMPv6 Echo Request message on pg0 interface.
1200             - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
1201         """
1202
1203         # test both with global and local ipv6 addresses
1204         dsts = (self.pg0.local_ip6, self.pg0.local_ip6_ll)
1205         id = 0xb
1206         seq = 5
1207         data = b'\x0a' * 18
1208         p = list()
1209         for dst in dsts:
1210             p.append((Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
1211                       IPv6(src=self.pg0.remote_ip6, dst=dst) /
1212                       ICMPv6EchoRequest(id=id, seq=seq, data=data)))
1213
1214         self.pg0.add_stream(p)
1215         self.pg_enable_capture(self.pg_interfaces)
1216         self.pg_start()
1217         rxs = self.pg0.get_capture(len(dsts))
1218
1219         for rx, dst in zip(rxs, dsts):
1220             ether = rx[Ether]
1221             ipv6 = rx[IPv6]
1222             icmpv6 = rx[ICMPv6EchoReply]
1223             self.assertEqual(ether.src, self.pg0.local_mac)
1224             self.assertEqual(ether.dst, self.pg0.remote_mac)
1225             self.assertEqual(ipv6.src, dst)
1226             self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1227             self.assertEqual(icmp6types[icmpv6.type], "Echo Reply")
1228             self.assertEqual(icmpv6.id, id)
1229             self.assertEqual(icmpv6.seq, seq)
1230             self.assertEqual(icmpv6.data, data)
1231
1232
1233 class TestIPv6RD(TestIPv6ND):
1234     """ IPv6 Router Discovery Test Case """
1235
1236     @classmethod
1237     def setUpClass(cls):
1238         super(TestIPv6RD, cls).setUpClass()
1239
1240     @classmethod
1241     def tearDownClass(cls):
1242         super(TestIPv6RD, cls).tearDownClass()
1243
1244     def setUp(self):
1245         super(TestIPv6RD, self).setUp()
1246
1247         # create 2 pg interfaces
1248         self.create_pg_interfaces(range(2))
1249
1250         self.interfaces = list(self.pg_interfaces)
1251
1252         # setup all interfaces
1253         for i in self.interfaces:
1254             i.admin_up()
1255             i.config_ip6()
1256
1257     def tearDown(self):
1258         for i in self.interfaces:
1259             i.unconfig_ip6()
1260             i.admin_down()
1261         super(TestIPv6RD, self).tearDown()
1262
1263     def test_rd_send_router_solicitation(self):
1264         """ Verify router solicitation packets """
1265
1266         count = 2
1267         self.pg_enable_capture(self.pg_interfaces)
1268         self.pg_start()
1269         self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1270                                                  mrc=count)
1271         rx_list = self.pg1.get_capture(count, timeout=3)
1272         self.assertEqual(len(rx_list), count)
1273         for packet in rx_list:
1274             self.assertEqual(packet.haslayer(IPv6), 1)
1275             self.assertEqual(packet[IPv6].haslayer(
1276                 ICMPv6ND_RS), 1)
1277             dst = ip6_normalize(packet[IPv6].dst)
1278             dst2 = ip6_normalize("ff02::2")
1279             self.assert_equal(dst, dst2)
1280             src = ip6_normalize(packet[IPv6].src)
1281             src2 = ip6_normalize(self.pg1.local_ip6_ll)
1282             self.assert_equal(src, src2)
1283             self.assertTrue(
1284                 bool(packet[ICMPv6ND_RS].haslayer(
1285                     ICMPv6NDOptSrcLLAddr)))
1286             self.assert_equal(
1287                 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1288                 self.pg1.local_mac)
1289
1290     def verify_prefix_info(self, reported_prefix, prefix_option):
1291         prefix = IPv6Network(
1292             text_type(prefix_option.getfieldval("prefix") +
1293                       "/" +
1294                       text_type(prefix_option.getfieldval("prefixlen"))),
1295             strict=False)
1296         self.assert_equal(reported_prefix.prefix.network_address,
1297                           prefix.network_address)
1298         L = prefix_option.getfieldval("L")
1299         A = prefix_option.getfieldval("A")
1300         option_flags = (L << 7) | (A << 6)
1301         self.assert_equal(reported_prefix.flags, option_flags)
1302         self.assert_equal(reported_prefix.valid_time,
1303                           prefix_option.getfieldval("validlifetime"))
1304         self.assert_equal(reported_prefix.preferred_time,
1305                           prefix_option.getfieldval("preferredlifetime"))
1306
1307     def test_rd_receive_router_advertisement(self):
1308         """ Verify events triggered by received RA packets """
1309
1310         self.vapi.want_ip6_ra_events(enable=1)
1311
1312         prefix_info_1 = ICMPv6NDOptPrefixInfo(
1313             prefix="1::2",
1314             prefixlen=50,
1315             validlifetime=200,
1316             preferredlifetime=500,
1317             L=1,
1318             A=1,
1319         )
1320
1321         prefix_info_2 = ICMPv6NDOptPrefixInfo(
1322             prefix="7::4",
1323             prefixlen=20,
1324             validlifetime=70,
1325             preferredlifetime=1000,
1326             L=1,
1327             A=0,
1328         )
1329
1330         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1331              IPv6(dst=self.pg1.local_ip6_ll,
1332                   src=mk_ll_addr(self.pg1.remote_mac)) /
1333              ICMPv6ND_RA() /
1334              prefix_info_1 /
1335              prefix_info_2)
1336         self.pg1.add_stream([p])
1337         self.pg_start()
1338
1339         ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1340
1341         self.assert_equal(ev.current_hop_limit, 0)
1342         self.assert_equal(ev.flags, 8)
1343         self.assert_equal(ev.router_lifetime_in_sec, 1800)
1344         self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1345         self.assert_equal(
1346             ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1347
1348         self.assert_equal(ev.n_prefixes, 2)
1349
1350         self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1351         self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1352
1353
1354 class TestIPv6RDControlPlane(TestIPv6ND):
1355     """ IPv6 Router Discovery Control Plane Test Case """
1356
1357     @classmethod
1358     def setUpClass(cls):
1359         super(TestIPv6RDControlPlane, cls).setUpClass()
1360
1361     @classmethod
1362     def tearDownClass(cls):
1363         super(TestIPv6RDControlPlane, cls).tearDownClass()
1364
1365     def setUp(self):
1366         super(TestIPv6RDControlPlane, self).setUp()
1367
1368         # create 1 pg interface
1369         self.create_pg_interfaces(range(1))
1370
1371         self.interfaces = list(self.pg_interfaces)
1372
1373         # setup all interfaces
1374         for i in self.interfaces:
1375             i.admin_up()
1376             i.config_ip6()
1377
1378     def tearDown(self):
1379         super(TestIPv6RDControlPlane, self).tearDown()
1380
1381     @staticmethod
1382     def create_ra_packet(pg, routerlifetime=None):
1383         src_ip = pg.remote_ip6_ll
1384         dst_ip = pg.local_ip6
1385         if routerlifetime is not None:
1386             ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1387         else:
1388             ra = ICMPv6ND_RA()
1389         p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1390              IPv6(dst=dst_ip, src=src_ip) / ra)
1391         return p
1392
1393     @staticmethod
1394     def get_default_routes(fib):
1395         list = []
1396         for entry in fib:
1397             if entry.route.prefix.prefixlen == 0:
1398                 for path in entry.route.paths:
1399                     if path.sw_if_index != 0xFFFFFFFF:
1400                         defaut_route = {}
1401                         defaut_route['sw_if_index'] = path.sw_if_index
1402                         defaut_route['next_hop'] = path.nh.address.ip6
1403                         list.append(defaut_route)
1404         return list
1405
1406     @staticmethod
1407     def get_interface_addresses(fib, pg):
1408         list = []
1409         for entry in fib:
1410             if entry.route.prefix.prefixlen == 128:
1411                 path = entry.route.paths[0]
1412                 if path.sw_if_index == pg.sw_if_index:
1413                     list.append(str(entry.route.prefix.network_address))
1414         return list
1415
1416     def wait_for_no_default_route(self, n_tries=50, s_time=1):
1417         while (n_tries):
1418             fib = self.vapi.ip_route_dump(0, True)
1419             default_routes = self.get_default_routes(fib)
1420             if 0 == len(default_routes):
1421                 return True
1422             n_tries = n_tries - 1
1423             self.sleep(s_time)
1424
1425         return False
1426
1427     def test_all(self):
1428         """ Test handling of SLAAC addresses and default routes """
1429
1430         fib = self.vapi.ip_route_dump(0, True)
1431         default_routes = self.get_default_routes(fib)
1432         initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1433         self.assertEqual(default_routes, [])
1434         router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll))
1435
1436         self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1437
1438         self.sleep(0.1)
1439
1440         # send RA
1441         packet = (self.create_ra_packet(
1442             self.pg0) / ICMPv6NDOptPrefixInfo(
1443             prefix="1::",
1444             prefixlen=64,
1445             validlifetime=2,
1446             preferredlifetime=2,
1447             L=1,
1448             A=1,
1449         ) / ICMPv6NDOptPrefixInfo(
1450             prefix="7::",
1451             prefixlen=20,
1452             validlifetime=1500,
1453             preferredlifetime=1000,
1454             L=1,
1455             A=0,
1456         ))
1457         self.pg0.add_stream([packet])
1458         self.pg_start()
1459
1460         self.sleep_on_vpp_time(0.1)
1461
1462         fib = self.vapi.ip_route_dump(0, True)
1463
1464         # check FIB for new address
1465         addresses = set(self.get_interface_addresses(fib, self.pg0))
1466         new_addresses = addresses.difference(initial_addresses)
1467         self.assertEqual(len(new_addresses), 1)
1468         prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1469                              strict=False)
1470         self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1471
1472         # check FIB for new default route
1473         default_routes = self.get_default_routes(fib)
1474         self.assertEqual(len(default_routes), 1)
1475         dr = default_routes[0]
1476         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1477         self.assertEqual(dr['next_hop'], router_address)
1478
1479         # send RA to delete default route
1480         packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1481         self.pg0.add_stream([packet])
1482         self.pg_start()
1483
1484         self.sleep_on_vpp_time(0.1)
1485
1486         # check that default route is deleted
1487         fib = self.vapi.ip_route_dump(0, True)
1488         default_routes = self.get_default_routes(fib)
1489         self.assertEqual(len(default_routes), 0)
1490
1491         self.sleep_on_vpp_time(0.1)
1492
1493         # send RA
1494         packet = self.create_ra_packet(self.pg0)
1495         self.pg0.add_stream([packet])
1496         self.pg_start()
1497
1498         self.sleep_on_vpp_time(0.1)
1499
1500         # check FIB for new default route
1501         fib = self.vapi.ip_route_dump(0, True)
1502         default_routes = self.get_default_routes(fib)
1503         self.assertEqual(len(default_routes), 1)
1504         dr = default_routes[0]
1505         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1506         self.assertEqual(dr['next_hop'], router_address)
1507
1508         # send RA, updating router lifetime to 1s
1509         packet = self.create_ra_packet(self.pg0, 1)
1510         self.pg0.add_stream([packet])
1511         self.pg_start()
1512
1513         self.sleep_on_vpp_time(0.1)
1514
1515         # check that default route still exists
1516         fib = self.vapi.ip_route_dump(0, True)
1517         default_routes = self.get_default_routes(fib)
1518         self.assertEqual(len(default_routes), 1)
1519         dr = default_routes[0]
1520         self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1521         self.assertEqual(dr['next_hop'], router_address)
1522
1523         self.sleep_on_vpp_time(1)
1524
1525         # check that default route is deleted
1526         self.assertTrue(self.wait_for_no_default_route())
1527
1528         # check FIB still contains the SLAAC address
1529         addresses = set(self.get_interface_addresses(fib, self.pg0))
1530         new_addresses = addresses.difference(initial_addresses)
1531
1532         self.assertEqual(len(new_addresses), 1)
1533         prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1534                              strict=False)
1535         self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1536
1537         self.sleep_on_vpp_time(1)
1538
1539         # check that SLAAC address is deleted
1540         fib = self.vapi.ip_route_dump(0, True)
1541         addresses = set(self.get_interface_addresses(fib, self.pg0))
1542         new_addresses = addresses.difference(initial_addresses)
1543         self.assertEqual(len(new_addresses), 0)
1544
1545
1546 class IPv6NDProxyTest(TestIPv6ND):
1547     """ IPv6 ND ProxyTest Case """
1548
1549     @classmethod
1550     def setUpClass(cls):
1551         super(IPv6NDProxyTest, cls).setUpClass()
1552
1553     @classmethod
1554     def tearDownClass(cls):
1555         super(IPv6NDProxyTest, cls).tearDownClass()
1556
1557     def setUp(self):
1558         super(IPv6NDProxyTest, self).setUp()
1559
1560         # create 3 pg interfaces
1561         self.create_pg_interfaces(range(3))
1562
1563         # pg0 is the master interface, with the configured subnet
1564         self.pg0.admin_up()
1565         self.pg0.config_ip6()
1566         self.pg0.resolve_ndp()
1567
1568         self.pg1.ip6_enable()
1569         self.pg2.ip6_enable()
1570
1571     def tearDown(self):
1572         super(IPv6NDProxyTest, self).tearDown()
1573
1574     def test_nd_proxy(self):
1575         """ IPv6 Proxy ND """
1576
1577         #
1578         # Generate some hosts in the subnet that we are proxying
1579         #
1580         self.pg0.generate_remote_hosts(8)
1581
1582         nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1583         d = inet_ntop(AF_INET6, nsma)
1584
1585         #
1586         # Send an NS for one of those remote hosts on one of the proxy links
1587         # expect no response since it's from an address that is not
1588         # on the link that has the prefix configured
1589         #
1590         ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1591                   IPv6(dst=d,
1592                        src=self.pg0._remote_hosts[2].ip6) /
1593                   ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1594                   ICMPv6NDOptSrcLLAddr(
1595                       lladdr=self.pg0._remote_hosts[2].mac))
1596
1597         self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1598
1599         #
1600         # Add proxy support for the host
1601         #
1602         self.vapi.ip6nd_proxy_add_del(
1603             is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1604             sw_if_index=self.pg1.sw_if_index)
1605
1606         #
1607         # try that NS again. this time we expect an NA back
1608         #
1609         self.send_and_expect_na(self.pg1, ns_pg1,
1610                                 "NS to proxy entry",
1611                                 dst_ip=self.pg0._remote_hosts[2].ip6,
1612                                 tgt_ip=self.pg0.local_ip6)
1613
1614         #
1615         # ... and that we have an entry in the ND cache
1616         #
1617         self.assertTrue(find_nbr(self,
1618                                  self.pg1.sw_if_index,
1619                                  self.pg0._remote_hosts[2].ip6))
1620
1621         #
1622         # ... and we can route traffic to it
1623         #
1624         t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1625              IPv6(dst=self.pg0._remote_hosts[2].ip6,
1626                   src=self.pg0.remote_ip6) /
1627              inet6.UDP(sport=10000, dport=20000) /
1628              Raw(b'\xa5' * 100))
1629
1630         self.pg0.add_stream(t)
1631         self.pg_enable_capture(self.pg_interfaces)
1632         self.pg_start()
1633         rx = self.pg1.get_capture(1)
1634         rx = rx[0]
1635
1636         self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1637         self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1638
1639         self.assertEqual(rx[IPv6].src,
1640                          t[IPv6].src)
1641         self.assertEqual(rx[IPv6].dst,
1642                          t[IPv6].dst)
1643
1644         #
1645         # Test we proxy for the host on the main interface
1646         #
1647         ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1648                   IPv6(dst=d, src=self.pg0.remote_ip6) /
1649                   ICMPv6ND_NS(
1650                       tgt=self.pg0._remote_hosts[2].ip6) /
1651                   ICMPv6NDOptSrcLLAddr(
1652                       lladdr=self.pg0.remote_mac))
1653
1654         self.send_and_expect_na(self.pg0, ns_pg0,
1655                                 "NS to proxy entry on main",
1656                                 tgt_ip=self.pg0._remote_hosts[2].ip6,
1657                                 dst_ip=self.pg0.remote_ip6)
1658
1659         #
1660         # Setup and resolve proxy for another host on another interface
1661         #
1662         ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1663                   IPv6(dst=d,
1664                        src=self.pg0._remote_hosts[3].ip6) /
1665                   ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1666                   ICMPv6NDOptSrcLLAddr(
1667                       lladdr=self.pg0._remote_hosts[2].mac))
1668
1669         self.vapi.ip6nd_proxy_add_del(
1670             is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1671             sw_if_index=self.pg2.sw_if_index)
1672
1673         self.send_and_expect_na(self.pg2, ns_pg2,
1674                                 "NS to proxy entry other interface",
1675                                 dst_ip=self.pg0._remote_hosts[3].ip6,
1676                                 tgt_ip=self.pg0.local_ip6)
1677
1678         self.assertTrue(find_nbr(self,
1679                                  self.pg2.sw_if_index,
1680                                  self.pg0._remote_hosts[3].ip6))
1681
1682         #
1683         # hosts can communicate. pg2->pg1
1684         #
1685         t2 = (Ether(dst=self.pg2.local_mac,
1686                     src=self.pg0.remote_hosts[3].mac) /
1687               IPv6(dst=self.pg0._remote_hosts[2].ip6,
1688                    src=self.pg0._remote_hosts[3].ip6) /
1689               inet6.UDP(sport=10000, dport=20000) /
1690               Raw(b'\xa5' * 100))
1691
1692         self.pg2.add_stream(t2)
1693         self.pg_enable_capture(self.pg_interfaces)
1694         self.pg_start()
1695         rx = self.pg1.get_capture(1)
1696         rx = rx[0]
1697
1698         self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1699         self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1700
1701         self.assertEqual(rx[IPv6].src,
1702                          t2[IPv6].src)
1703         self.assertEqual(rx[IPv6].dst,
1704                          t2[IPv6].dst)
1705
1706         #
1707         # remove the proxy configs
1708         #
1709         self.vapi.ip6nd_proxy_add_del(
1710             ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1711             sw_if_index=self.pg1.sw_if_index, is_add=0)
1712         self.vapi.ip6nd_proxy_add_del(
1713             ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1714             sw_if_index=self.pg2.sw_if_index, is_add=0)
1715
1716         self.assertFalse(find_nbr(self,
1717                                   self.pg2.sw_if_index,
1718                                   self.pg0._remote_hosts[3].ip6))
1719         self.assertFalse(find_nbr(self,
1720                                   self.pg1.sw_if_index,
1721                                   self.pg0._remote_hosts[2].ip6))
1722
1723         #
1724         # no longer proxy-ing...
1725         #
1726         self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1727         self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1728         self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1729
1730         #
1731         # no longer forwarding. traffic generates NS out of the glean/main
1732         # interface
1733         #
1734         self.pg2.add_stream(t2)
1735         self.pg_enable_capture(self.pg_interfaces)
1736         self.pg_start()
1737
1738         rx = self.pg0.get_capture(1)
1739
1740         self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1741
1742
1743 class TestIPNull(VppTestCase):
1744     """ IPv6 routes via NULL """
1745
1746     @classmethod
1747     def setUpClass(cls):
1748         super(TestIPNull, cls).setUpClass()
1749
1750     @classmethod
1751     def tearDownClass(cls):
1752         super(TestIPNull, cls).tearDownClass()
1753
1754     def setUp(self):
1755         super(TestIPNull, self).setUp()
1756
1757         # create 2 pg interfaces
1758         self.create_pg_interfaces(range(1))
1759
1760         for i in self.pg_interfaces:
1761             i.admin_up()
1762             i.config_ip6()
1763             i.resolve_ndp()
1764
1765     def tearDown(self):
1766         super(TestIPNull, self).tearDown()
1767         for i in self.pg_interfaces:
1768             i.unconfig_ip6()
1769             i.admin_down()
1770
1771     def test_ip_null(self):
1772         """ IP NULL route """
1773
1774         p = (Ether(src=self.pg0.remote_mac,
1775                    dst=self.pg0.local_mac) /
1776              IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1777              inet6.UDP(sport=1234, dport=1234) /
1778              Raw(b'\xa5' * 100))
1779
1780         #
1781         # A route via IP NULL that will reply with ICMP unreachables
1782         #
1783         ip_unreach = VppIpRoute(
1784             self, "2001::", 64,
1785             [VppRoutePath("::", 0xffffffff,
1786                           type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)])
1787         ip_unreach.add_vpp_config()
1788
1789         self.pg0.add_stream(p)
1790         self.pg_enable_capture(self.pg_interfaces)
1791         self.pg_start()
1792
1793         rx = self.pg0.get_capture(1)
1794         rx = rx[0]
1795         icmp = rx[ICMPv6DestUnreach]
1796
1797         # 0 = "No route to destination"
1798         self.assertEqual(icmp.code, 0)
1799
1800         # ICMP is rate limited. pause a bit
1801         self.sleep(1)
1802
1803         #
1804         # A route via IP NULL that will reply with ICMP prohibited
1805         #
1806         ip_prohibit = VppIpRoute(
1807             self, "2001::1", 128,
1808             [VppRoutePath("::", 0xffffffff,
1809                           type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)])
1810         ip_prohibit.add_vpp_config()
1811
1812         self.pg0.add_stream(p)
1813         self.pg_enable_capture(self.pg_interfaces)
1814         self.pg_start()
1815
1816         rx = self.pg0.get_capture(1)
1817         rx = rx[0]
1818         icmp = rx[ICMPv6DestUnreach]
1819
1820         # 1 = "Communication with destination administratively prohibited"
1821         self.assertEqual(icmp.code, 1)
1822
1823
1824 class TestIPDisabled(VppTestCase):
1825     """ IPv6 disabled """
1826
1827     @classmethod
1828     def setUpClass(cls):
1829         super(TestIPDisabled, cls).setUpClass()
1830
1831     @classmethod
1832     def tearDownClass(cls):
1833         super(TestIPDisabled, cls).tearDownClass()
1834
1835     def setUp(self):
1836         super(TestIPDisabled, self).setUp()
1837
1838         # create 2 pg interfaces
1839         self.create_pg_interfaces(range(2))
1840
1841         # PG0 is IP enabled
1842         self.pg0.admin_up()
1843         self.pg0.config_ip6()
1844         self.pg0.resolve_ndp()
1845
1846         # PG 1 is not IP enabled
1847         self.pg1.admin_up()
1848
1849     def tearDown(self):
1850         super(TestIPDisabled, self).tearDown()
1851         for i in self.pg_interfaces:
1852             i.unconfig_ip4()
1853             i.admin_down()
1854
1855     def test_ip_disabled(self):
1856         """ IP Disabled """
1857
1858         MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
1859         MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
1860         #
1861         # An (S,G).
1862         # one accepting interface, pg0, 2 forwarding interfaces
1863         #
1864         route_ff_01 = VppIpMRoute(
1865             self,
1866             "::",
1867             "ffef::1", 128,
1868             MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
1869             [VppMRoutePath(self.pg1.sw_if_index,
1870                            MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
1871              VppMRoutePath(self.pg0.sw_if_index,
1872                            MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
1873         route_ff_01.add_vpp_config()
1874
1875         pu = (Ether(src=self.pg1.remote_mac,
1876                     dst=self.pg1.local_mac) /
1877               IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1878               inet6.UDP(sport=1234, dport=1234) /
1879               Raw(b'\xa5' * 100))
1880         pm = (Ether(src=self.pg1.remote_mac,
1881                     dst=self.pg1.local_mac) /
1882               IPv6(src="2001::1", dst="ffef::1") /
1883               inet6.UDP(sport=1234, dport=1234) /
1884               Raw(b'\xa5' * 100))
1885
1886         #
1887         # PG1 does not forward IP traffic
1888         #
1889         self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1890         self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1891
1892         #
1893         # IP enable PG1
1894         #
1895         self.pg1.config_ip6()
1896
1897         #
1898         # Now we get packets through
1899         #
1900         self.pg1.add_stream(pu)
1901         self.pg_enable_capture(self.pg_interfaces)
1902         self.pg_start()
1903         rx = self.pg0.get_capture(1)
1904
1905         self.pg1.add_stream(pm)
1906         self.pg_enable_capture(self.pg_interfaces)
1907         self.pg_start()
1908         rx = self.pg0.get_capture(1)
1909
1910         #
1911         # Disable PG1
1912         #
1913         self.pg1.unconfig_ip6()
1914
1915         #
1916         # PG1 does not forward IP traffic
1917         #
1918         self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1919         self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1920
1921
1922 class TestIP6LoadBalance(VppTestCase):
1923     """ IPv6 Load-Balancing """
1924
1925     @classmethod
1926     def setUpClass(cls):
1927         super(TestIP6LoadBalance, cls).setUpClass()
1928
1929     @classmethod
1930     def tearDownClass(cls):
1931         super(TestIP6LoadBalance, cls).tearDownClass()
1932
1933     def setUp(self):
1934         super(TestIP6LoadBalance, self).setUp()
1935
1936         self.create_pg_interfaces(range(5))
1937
1938         mpls_tbl = VppMplsTable(self, 0)
1939         mpls_tbl.add_vpp_config()
1940
1941         for i in self.pg_interfaces:
1942             i.admin_up()
1943             i.config_ip6()
1944             i.resolve_ndp()
1945             i.enable_mpls()
1946
1947     def tearDown(self):
1948         for i in self.pg_interfaces:
1949             i.unconfig_ip6()
1950             i.admin_down()
1951             i.disable_mpls()
1952         super(TestIP6LoadBalance, self).tearDown()
1953
1954     def pg_send(self, input, pkts):
1955         self.vapi.cli("clear trace")
1956         input.add_stream(pkts)
1957         self.pg_enable_capture(self.pg_interfaces)
1958         self.pg_start()
1959
1960     def send_and_expect_load_balancing(self, input, pkts, outputs):
1961         self.pg_send(input, pkts)
1962         rxs = []
1963         for oo in outputs:
1964             rx = oo._get_capture(1)
1965             self.assertNotEqual(0, len(rx))
1966             rxs.append(rx)
1967         return rxs
1968
1969     def send_and_expect_one_itf(self, input, pkts, itf):
1970         self.pg_send(input, pkts)
1971         rx = itf.get_capture(len(pkts))
1972
1973     def test_ip6_load_balance(self):
1974         """ IPv6 Load-Balancing """
1975
1976         #
1977         # An array of packets that differ only in the destination port
1978         #  - IP only
1979         #  - MPLS EOS
1980         #  - MPLS non-EOS
1981         #  - MPLS non-EOS with an entropy label
1982         #
1983         port_ip_pkts = []
1984         port_mpls_pkts = []
1985         port_mpls_neos_pkts = []
1986         port_ent_pkts = []
1987
1988         #
1989         # An array of packets that differ only in the source address
1990         #
1991         src_ip_pkts = []
1992         src_mpls_pkts = []
1993
1994         for ii in range(NUM_PKTS):
1995             port_ip_hdr = (
1996                 IPv6(dst="3000::1", src="3000:1::1") /
1997                 inet6.UDP(sport=1234, dport=1234 + ii) /
1998                 Raw(b'\xa5' * 100))
1999             port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
2000                                        dst=self.pg0.local_mac) /
2001                                  port_ip_hdr))
2002             port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
2003                                          dst=self.pg0.local_mac) /
2004                                    MPLS(label=66, ttl=2) /
2005                                    port_ip_hdr))
2006             port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
2007                                               dst=self.pg0.local_mac) /
2008                                         MPLS(label=67, ttl=2) /
2009                                         MPLS(label=77, ttl=2) /
2010                                         port_ip_hdr))
2011             port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
2012                                         dst=self.pg0.local_mac) /
2013                                   MPLS(label=67, ttl=2) /
2014                                   MPLS(label=14, ttl=2) /
2015                                   MPLS(label=999, ttl=2) /
2016                                   port_ip_hdr))
2017             src_ip_hdr = (
2018                 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
2019                 inet6.UDP(sport=1234, dport=1234) /
2020                 Raw(b'\xa5' * 100))
2021             src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
2022                                       dst=self.pg0.local_mac) /
2023                                 src_ip_hdr))
2024             src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
2025                                         dst=self.pg0.local_mac) /
2026                                   MPLS(label=66, ttl=2) /
2027                                   src_ip_hdr))
2028
2029         #
2030         # A route for the IP packets
2031         #
2032         route_3000_1 = VppIpRoute(self, "3000::1", 128,
2033                                   [VppRoutePath(self.pg1.remote_ip6,
2034                                                 self.pg1.sw_if_index),
2035                                    VppRoutePath(self.pg2.remote_ip6,
2036                                                 self.pg2.sw_if_index)])
2037         route_3000_1.add_vpp_config()
2038
2039         #
2040         # a local-label for the EOS packets
2041         #
2042         binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
2043         binding.add_vpp_config()
2044
2045         #
2046         # An MPLS route for the non-EOS packets
2047         #
2048         route_67 = VppMplsRoute(self, 67, 0,
2049                                 [VppRoutePath(self.pg1.remote_ip6,
2050                                               self.pg1.sw_if_index,
2051                                               labels=[67]),
2052                                  VppRoutePath(self.pg2.remote_ip6,
2053                                               self.pg2.sw_if_index,
2054                                               labels=[67])])
2055         route_67.add_vpp_config()
2056
2057         #
2058         # inject the packet on pg0 - expect load-balancing across the 2 paths
2059         #  - since the default hash config is to use IP src,dst and port
2060         #    src,dst
2061         # We are not going to ensure equal amounts of packets across each link,
2062         # since the hash algorithm is statistical and therefore this can never
2063         # be guaranteed. But with 64 different packets we do expect some
2064         # balancing. So instead just ensure there is traffic on each link.
2065         #
2066         rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
2067                                                  [self.pg1, self.pg2])
2068         n_ip_pg0 = len(rx[0])
2069         self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
2070                                             [self.pg1, self.pg2])
2071         self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
2072                                             [self.pg1, self.pg2])
2073         self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2074                                             [self.pg1, self.pg2])
2075         rx = self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
2076                                                  [self.pg1, self.pg2])
2077         n_mpls_pg0 = len(rx[0])
2078
2079         #
2080         # change the router ID and expect the distribution changes
2081         #
2082         self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111)
2083
2084         rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
2085                                                  [self.pg1, self.pg2])
2086         self.assertNotEqual(n_ip_pg0, len(rx[0]))
2087
2088         rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2089                                                  [self.pg1, self.pg2])
2090         self.assertNotEqual(n_mpls_pg0, len(rx[0]))
2091
2092         #
2093         # The packets with Entropy label in should not load-balance,
2094         # since the Entropy value is fixed.
2095         #
2096         self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
2097
2098         #
2099         # change the flow hash config so it's only IP src,dst
2100         #  - now only the stream with differing source address will
2101         #    load-balance
2102         #
2103         self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, proto=1,
2104                                    sport=0, dport=0, is_ipv6=1)
2105
2106         self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
2107                                             [self.pg1, self.pg2])
2108         self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2109                                             [self.pg1, self.pg2])
2110         self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
2111
2112         #
2113         # change the flow hash config back to defaults
2114         #
2115         self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1,
2116                                    proto=1, is_ipv6=1)
2117
2118         #
2119         # Recursive prefixes
2120         #  - testing that 2 stages of load-balancing occurs and there is no
2121         #    polarisation (i.e. only 2 of 4 paths are used)
2122         #
2123         port_pkts = []
2124         src_pkts = []
2125
2126         for ii in range(257):
2127             port_pkts.append((Ether(src=self.pg0.remote_mac,
2128                                     dst=self.pg0.local_mac) /
2129                               IPv6(dst="4000::1",
2130                                    src="4000:1::1") /
2131                               inet6.UDP(sport=1234,
2132                                         dport=1234 + ii) /
2133                               Raw(b'\xa5' * 100)))
2134             src_pkts.append((Ether(src=self.pg0.remote_mac,
2135                                    dst=self.pg0.local_mac) /
2136                              IPv6(dst="4000::1",
2137                                   src="4000:1::%d" % ii) /
2138                              inet6.UDP(sport=1234, dport=1234) /
2139                              Raw(b'\xa5' * 100)))
2140
2141         route_3000_2 = VppIpRoute(self, "3000::2", 128,
2142                                   [VppRoutePath(self.pg3.remote_ip6,
2143                                                 self.pg3.sw_if_index),
2144                                    VppRoutePath(self.pg4.remote_ip6,
2145                                                 self.pg4.sw_if_index)])
2146         route_3000_2.add_vpp_config()
2147
2148         route_4000_1 = VppIpRoute(self, "4000::1", 128,
2149                                   [VppRoutePath("3000::1",
2150                                                 0xffffffff),
2151                                    VppRoutePath("3000::2",
2152                                                 0xffffffff)])
2153         route_4000_1.add_vpp_config()
2154
2155         #
2156         # inject the packet on pg0 - expect load-balancing across all 4 paths
2157         #
2158         self.vapi.cli("clear trace")
2159         self.send_and_expect_load_balancing(self.pg0, port_pkts,
2160                                             [self.pg1, self.pg2,
2161                                              self.pg3, self.pg4])
2162         self.send_and_expect_load_balancing(self.pg0, src_pkts,
2163                                             [self.pg1, self.pg2,
2164                                              self.pg3, self.pg4])
2165
2166         #
2167         # Recursive prefixes
2168         #  - testing that 2 stages of load-balancing no choices
2169         #
2170         port_pkts = []
2171
2172         for ii in range(257):
2173             port_pkts.append((Ether(src=self.pg0.remote_mac,
2174                                     dst=self.pg0.local_mac) /
2175                               IPv6(dst="6000::1",
2176                                    src="6000:1::1") /
2177                               inet6.UDP(sport=1234,
2178                                         dport=1234 + ii) /
2179                               Raw(b'\xa5' * 100)))
2180
2181         route_5000_2 = VppIpRoute(self, "5000::2", 128,
2182                                   [VppRoutePath(self.pg3.remote_ip6,
2183                                                 self.pg3.sw_if_index)])
2184         route_5000_2.add_vpp_config()
2185
2186         route_6000_1 = VppIpRoute(self, "6000::1", 128,
2187                                   [VppRoutePath("5000::2",
2188                                                 0xffffffff)])
2189         route_6000_1.add_vpp_config()
2190
2191         #
2192         # inject the packet on pg0 - expect load-balancing across all 4 paths
2193         #
2194         self.vapi.cli("clear trace")
2195         self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
2196
2197
2198 class IP6PuntSetup(object):
2199     """ Setup for IPv6 Punt Police/Redirect """
2200
2201     def punt_setup(self):
2202         self.create_pg_interfaces(range(4))
2203
2204         for i in self.pg_interfaces:
2205             i.admin_up()
2206             i.config_ip6()
2207             i.resolve_ndp()
2208
2209         self.pkt = (Ether(src=self.pg0.remote_mac,
2210                           dst=self.pg0.local_mac) /
2211                     IPv6(src=self.pg0.remote_ip6,
2212                          dst=self.pg0.local_ip6) /
2213                     inet6.TCP(sport=1234, dport=1234) /
2214                     Raw(b'\xa5' * 100))
2215
2216     def punt_teardown(self):
2217         for i in self.pg_interfaces:
2218             i.unconfig_ip6()
2219             i.admin_down()
2220
2221
2222 class TestIP6Punt(IP6PuntSetup, VppTestCase):
2223     """ IPv6 Punt Police/Redirect """
2224
2225     def setUp(self):
2226         super(TestIP6Punt, self).setUp()
2227         super(TestIP6Punt, self).punt_setup()
2228
2229     def tearDown(self):
2230         super(TestIP6Punt, self).punt_teardown()
2231         super(TestIP6Punt, self).tearDown()
2232
2233     def test_ip_punt(self):
2234         """ IP6 punt police and redirect """
2235
2236         pkts = self.pkt * 1025
2237
2238         #
2239         # Configure a punt redirect via pg1.
2240         #
2241         nh_addr = self.pg1.remote_ip6
2242         ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2243                                              self.pg1.sw_if_index, nh_addr)
2244         ip_punt_redirect.add_vpp_config()
2245
2246         self.send_and_expect(self.pg0, pkts, self.pg1)
2247
2248         #
2249         # add a policer
2250         #
2251         policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1)
2252         policer.add_vpp_config()
2253         ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
2254                                            is_ip6=True)
2255         ip_punt_policer.add_vpp_config()
2256
2257         self.vapi.cli("clear trace")
2258         self.pg0.add_stream(pkts)
2259         self.pg_enable_capture(self.pg_interfaces)
2260         self.pg_start()
2261
2262         #
2263         # the number of packet received should be greater than 0,
2264         # but not equal to the number sent, since some were policed
2265         #
2266         rx = self.pg1._get_capture(1)
2267         stats = policer.get_stats()
2268
2269         # Single rate policer - expect conform, violate but no exceed
2270         self.assertGreater(stats['conform_packets'], 0)
2271         self.assertEqual(stats['exceed_packets'], 0)
2272         self.assertGreater(stats['violate_packets'], 0)
2273
2274         self.assertGreater(len(rx), 0)
2275         self.assertLess(len(rx), len(pkts))
2276
2277         #
2278         # remove the policer. back to full rx
2279         #
2280         ip_punt_policer.remove_vpp_config()
2281         policer.remove_vpp_config()
2282         self.send_and_expect(self.pg0, pkts, self.pg1)
2283
2284         #
2285         # remove the redirect. expect full drop.
2286         #
2287         ip_punt_redirect.remove_vpp_config()
2288         self.send_and_assert_no_replies(self.pg0, pkts,
2289                                         "IP no punt config")
2290
2291         #
2292         # Add a redirect that is not input port selective
2293         #
2294         ip_punt_redirect = VppIpPuntRedirect(self, 0xffffffff,
2295                                              self.pg1.sw_if_index, nh_addr)
2296         ip_punt_redirect.add_vpp_config()
2297         self.send_and_expect(self.pg0, pkts, self.pg1)
2298         ip_punt_redirect.remove_vpp_config()
2299
2300     def test_ip_punt_dump(self):
2301         """ IP6 punt redirect dump"""
2302
2303         #
2304         # Configure a punt redirects
2305         #
2306         nh_address = self.pg3.remote_ip6
2307         ipr_03 = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2308                                    self.pg3.sw_if_index, nh_address)
2309         ipr_13 = VppIpPuntRedirect(self, self.pg1.sw_if_index,
2310                                    self.pg3.sw_if_index, nh_address)
2311         ipr_23 = VppIpPuntRedirect(self, self.pg2.sw_if_index,
2312                                    self.pg3.sw_if_index, '0::0')
2313         ipr_03.add_vpp_config()
2314         ipr_13.add_vpp_config()
2315         ipr_23.add_vpp_config()
2316
2317         #
2318         # Dump pg0 punt redirects
2319         #
2320         self.assertTrue(ipr_03.query_vpp_config())
2321         self.assertTrue(ipr_13.query_vpp_config())
2322         self.assertTrue(ipr_23.query_vpp_config())
2323
2324         #
2325         # Dump punt redirects for all interfaces
2326         #
2327         punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2328         self.assertEqual(len(punts), 3)
2329         for p in punts:
2330             self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2331         self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2332         self.assertEqual(str(punts[2].punt.nh), '::')
2333
2334
2335 class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase):
2336     """ IPv6 Punt Police/Redirect """
2337     vpp_worker_count = 2
2338
2339     def setUp(self):
2340         super(TestIP6PuntHandoff, self).setUp()
2341         super(TestIP6PuntHandoff, self).punt_setup()
2342
2343     def tearDown(self):
2344         super(TestIP6PuntHandoff, self).punt_teardown()
2345         super(TestIP6PuntHandoff, self).tearDown()
2346
2347     def test_ip_punt(self):
2348         """ IP6 punt policer thread handoff """
2349         pkts = self.pkt * NUM_PKTS
2350
2351         #
2352         # Configure a punt redirect via pg1.
2353         #
2354         nh_addr = self.pg1.remote_ip6
2355         ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2356                                              self.pg1.sw_if_index, nh_addr)
2357         ip_punt_redirect.add_vpp_config()
2358
2359         action_tx = PolicerAction(
2360             VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
2361             0)
2362         #
2363         # This policer drops no packets, we are just
2364         # testing that they get to the right thread.
2365         #
2366         policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, 1,
2367                              0, 0, False, action_tx, action_tx, action_tx)
2368         policer.add_vpp_config()
2369         ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
2370                                            is_ip6=True)
2371         ip_punt_policer.add_vpp_config()
2372
2373         for worker in [0, 1]:
2374             self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2375             if worker == 0:
2376                 self.logger.debug(self.vapi.cli("show trace max 100"))
2377
2378         # Combined stats, all threads
2379         stats = policer.get_stats()
2380
2381         # Single rate policer - expect conform, violate but no exceed
2382         self.assertGreater(stats['conform_packets'], 0)
2383         self.assertEqual(stats['exceed_packets'], 0)
2384         self.assertGreater(stats['violate_packets'], 0)
2385
2386         # Worker 0, should have done all the policing
2387         stats0 = policer.get_stats(worker=0)
2388         self.assertEqual(stats, stats0)
2389
2390         # Worker 1, should have handed everything off
2391         stats1 = policer.get_stats(worker=1)
2392         self.assertEqual(stats1['conform_packets'], 0)
2393         self.assertEqual(stats1['exceed_packets'], 0)
2394         self.assertEqual(stats1['violate_packets'], 0)
2395
2396         # Bind the policer to worker 1 and repeat
2397         policer.bind_vpp_config(1, True)
2398         for worker in [0, 1]:
2399             self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2400             self.logger.debug(self.vapi.cli("show trace max 100"))
2401
2402         # The 2 workers should now have policed the same amount
2403         stats = policer.get_stats()
2404         stats0 = policer.get_stats(worker=0)
2405         stats1 = policer.get_stats(worker=1)
2406
2407         self.assertGreater(stats0['conform_packets'], 0)
2408         self.assertEqual(stats0['exceed_packets'], 0)
2409         self.assertGreater(stats0['violate_packets'], 0)
2410
2411         self.assertGreater(stats1['conform_packets'], 0)
2412         self.assertEqual(stats1['exceed_packets'], 0)
2413         self.assertGreater(stats1['violate_packets'], 0)
2414
2415         self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
2416                          stats['conform_packets'])
2417
2418         self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
2419                          stats['violate_packets'])
2420
2421         # Unbind the policer and repeat
2422         policer.bind_vpp_config(1, False)
2423         for worker in [0, 1]:
2424             self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2425             self.logger.debug(self.vapi.cli("show trace max 100"))
2426
2427         # The policer should auto-bind to worker 0 when packets arrive
2428         stats = policer.get_stats()
2429         stats0new = policer.get_stats(worker=0)
2430         stats1new = policer.get_stats(worker=1)
2431
2432         self.assertGreater(stats0new['conform_packets'],
2433                            stats0['conform_packets'])
2434         self.assertEqual(stats0new['exceed_packets'], 0)
2435         self.assertGreater(stats0new['violate_packets'],
2436                            stats0['violate_packets'])
2437
2438         self.assertEqual(stats1, stats1new)
2439
2440         #
2441         # Clean up
2442         #
2443         ip_punt_policer.remove_vpp_config()
2444         policer.remove_vpp_config()
2445         ip_punt_redirect.remove_vpp_config()
2446
2447
2448 class TestIPDeag(VppTestCase):
2449     """ IPv6 Deaggregate Routes """
2450
2451     @classmethod
2452     def setUpClass(cls):
2453         super(TestIPDeag, cls).setUpClass()
2454
2455     @classmethod
2456     def tearDownClass(cls):
2457         super(TestIPDeag, cls).tearDownClass()
2458
2459     def setUp(self):
2460         super(TestIPDeag, self).setUp()
2461
2462         self.create_pg_interfaces(range(3))
2463
2464         for i in self.pg_interfaces:
2465             i.admin_up()
2466             i.config_ip6()
2467             i.resolve_ndp()
2468
2469     def tearDown(self):
2470         super(TestIPDeag, self).tearDown()
2471         for i in self.pg_interfaces:
2472             i.unconfig_ip6()
2473             i.admin_down()
2474
2475     def test_ip_deag(self):
2476         """ IP Deag Routes """
2477
2478         #
2479         # Create a table to be used for:
2480         #  1 - another destination address lookup
2481         #  2 - a source address lookup
2482         #
2483         table_dst = VppIpTable(self, 1, is_ip6=1)
2484         table_src = VppIpTable(self, 2, is_ip6=1)
2485         table_dst.add_vpp_config()
2486         table_src.add_vpp_config()
2487
2488         #
2489         # Add a route in the default table to point to a deag/
2490         # second lookup in each of these tables
2491         #
2492         route_to_dst = VppIpRoute(self, "1::1", 128,
2493                                   [VppRoutePath("::",
2494                                                 0xffffffff,
2495                                                 nh_table_id=1)])
2496         route_to_src = VppIpRoute(
2497             self, "1::2", 128,
2498             [VppRoutePath("::",
2499                           0xffffffff,
2500                           nh_table_id=2,
2501                           type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)])
2502
2503         route_to_dst.add_vpp_config()
2504         route_to_src.add_vpp_config()
2505
2506         #
2507         # packets to these destination are dropped, since they'll
2508         # hit the respective default routes in the second table
2509         #
2510         p_dst = (Ether(src=self.pg0.remote_mac,
2511                        dst=self.pg0.local_mac) /
2512                  IPv6(src="5::5", dst="1::1") /
2513                  inet6.TCP(sport=1234, dport=1234) /
2514                  Raw(b'\xa5' * 100))
2515         p_src = (Ether(src=self.pg0.remote_mac,
2516                        dst=self.pg0.local_mac) /
2517                  IPv6(src="2::2", dst="1::2") /
2518                  inet6.TCP(sport=1234, dport=1234) /
2519                  Raw(b'\xa5' * 100))
2520         pkts_dst = p_dst * 257
2521         pkts_src = p_src * 257
2522
2523         self.send_and_assert_no_replies(self.pg0, pkts_dst,
2524                                         "IP in dst table")
2525         self.send_and_assert_no_replies(self.pg0, pkts_src,
2526                                         "IP in src table")
2527
2528         #
2529         # add a route in the dst table to forward via pg1
2530         #
2531         route_in_dst = VppIpRoute(self, "1::1", 128,
2532                                   [VppRoutePath(self.pg1.remote_ip6,
2533                                                 self.pg1.sw_if_index)],
2534                                   table_id=1)
2535         route_in_dst.add_vpp_config()
2536
2537         self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2538
2539         #
2540         # add a route in the src table to forward via pg2
2541         #
2542         route_in_src = VppIpRoute(self, "2::2", 128,
2543                                   [VppRoutePath(self.pg2.remote_ip6,
2544                                                 self.pg2.sw_if_index)],
2545                                   table_id=2)
2546         route_in_src.add_vpp_config()
2547         self.send_and_expect(self.pg0, pkts_src, self.pg2)
2548
2549         #
2550         # loop in the lookup DP
2551         #
2552         route_loop = VppIpRoute(self, "3::3", 128,
2553                                 [VppRoutePath("::",
2554                                               0xffffffff)])
2555         route_loop.add_vpp_config()
2556
2557         p_l = (Ether(src=self.pg0.remote_mac,
2558                      dst=self.pg0.local_mac) /
2559                IPv6(src="3::4", dst="3::3") /
2560                inet6.TCP(sport=1234, dport=1234) /
2561                Raw(b'\xa5' * 100))
2562
2563         self.send_and_assert_no_replies(self.pg0, p_l * 257,
2564                                         "IP lookup loop")
2565
2566
2567 class TestIP6Input(VppTestCase):
2568     """ IPv6 Input Exception Test Cases """
2569
2570     @classmethod
2571     def setUpClass(cls):
2572         super(TestIP6Input, cls).setUpClass()
2573
2574     @classmethod
2575     def tearDownClass(cls):
2576         super(TestIP6Input, cls).tearDownClass()
2577
2578     def setUp(self):
2579         super(TestIP6Input, self).setUp()
2580
2581         self.create_pg_interfaces(range(2))
2582
2583         for i in self.pg_interfaces:
2584             i.admin_up()
2585             i.config_ip6()
2586             i.resolve_ndp()
2587
2588     def tearDown(self):
2589         super(TestIP6Input, self).tearDown()
2590         for i in self.pg_interfaces:
2591             i.unconfig_ip6()
2592             i.admin_down()
2593
2594     def test_ip_input_icmp_reply(self):
2595         """ IP6 Input Exception - Return ICMP (3,0) """
2596         #
2597         # hop limit - ICMP replies
2598         #
2599         p_version = (Ether(src=self.pg0.remote_mac,
2600                            dst=self.pg0.local_mac) /
2601                      IPv6(src=self.pg0.remote_ip6,
2602                           dst=self.pg1.remote_ip6,
2603                           hlim=1) /
2604                      inet6.UDP(sport=1234, dport=1234) /
2605                      Raw(b'\xa5' * 100))
2606
2607         rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0)
2608         rx = rx[0]
2609         icmp = rx[ICMPv6TimeExceeded]
2610
2611         # 0: "hop limit exceeded in transit",
2612         self.assertEqual((icmp.type, icmp.code), (3, 0))
2613
2614     icmpv6_data = '\x0a' * 18
2615     all_0s = "::"
2616     all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2617
2618     @parameterized.expand([
2619         # Name, src, dst, l4proto, msg, timeout
2620         ("src='iface',   dst='iface'", None, None,
2621          inet6.UDP(sport=1234, dport=1234), "funky version", None),
2622         ("src='All 0's', dst='iface'", all_0s, None,
2623          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2624         ("src='iface',   dst='All 0's'", None, all_0s,
2625          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2626         ("src='All 1's', dst='iface'", all_1s, None,
2627          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2628         ("src='iface',   dst='All 1's'", None, all_1s,
2629          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2630         ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2631          ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2632
2633     ])
2634     def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2635
2636         self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2637
2638         p_version = (Ether(src=self.pg0.remote_mac,
2639                            dst=self.pg0.local_mac) /
2640                      IPv6(src=src or self.pg0.remote_ip6,
2641                           dst=dst or self.pg1.remote_ip6,
2642                           version=3) /
2643                      l4 /
2644                      Raw(b'\xa5' * 100))
2645
2646         self.send_and_assert_no_replies(self.pg0, p_version * NUM_PKTS,
2647                                         remark=msg or "",
2648                                         timeout=timeout)
2649
2650     def test_hop_by_hop(self):
2651         """ Hop-by-hop header test """
2652
2653         p = (Ether(src=self.pg0.remote_mac,
2654                    dst=self.pg0.local_mac) /
2655              IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
2656              IPv6ExtHdrHopByHop() /
2657              inet6.UDP(sport=1234, dport=1234) /
2658              Raw(b'\xa5' * 100))
2659
2660         self.pg0.add_stream(p)
2661         self.pg_enable_capture(self.pg_interfaces)
2662         self.pg_start()
2663
2664
2665 class TestIPReplace(VppTestCase):
2666     """ IPv6 Table Replace """
2667
2668     @classmethod
2669     def setUpClass(cls):
2670         super(TestIPReplace, cls).setUpClass()
2671
2672     @classmethod
2673     def tearDownClass(cls):
2674         super(TestIPReplace, cls).tearDownClass()
2675
2676     def setUp(self):
2677         super(TestIPReplace, self).setUp()
2678
2679         self.create_pg_interfaces(range(4))
2680
2681         table_id = 1
2682         self.tables = []
2683
2684         for i in self.pg_interfaces:
2685             i.admin_up()
2686             i.config_ip6()
2687             i.generate_remote_hosts(2)
2688             self.tables.append(VppIpTable(self, table_id,
2689                                           True).add_vpp_config())
2690             table_id += 1
2691
2692     def tearDown(self):
2693         super(TestIPReplace, self).tearDown()
2694         for i in self.pg_interfaces:
2695             i.admin_down()
2696             i.unconfig_ip6()
2697
2698     def test_replace(self):
2699         """ IP Table Replace """
2700
2701         MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
2702         MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
2703         N_ROUTES = 20
2704         links = [self.pg0, self.pg1, self.pg2, self.pg3]
2705         routes = [[], [], [], []]
2706
2707         # the sizes of 'empty' tables
2708         for t in self.tables:
2709             self.assertEqual(len(t.dump()), 2)
2710             self.assertEqual(len(t.mdump()), 5)
2711
2712         # load up the tables with some routes
2713         for ii, t in enumerate(self.tables):
2714             for jj in range(1, N_ROUTES):
2715                 uni = VppIpRoute(
2716                     self, "2001::%d" % jj if jj != 0 else "2001::", 128,
2717                     [VppRoutePath(links[ii].remote_hosts[0].ip6,
2718                                   links[ii].sw_if_index),
2719                      VppRoutePath(links[ii].remote_hosts[1].ip6,
2720                                   links[ii].sw_if_index)],
2721                     table_id=t.table_id).add_vpp_config()
2722                 multi = VppIpMRoute(
2723                     self, "::",
2724                     "ff:2001::%d" % jj, 128,
2725                     MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
2726                     [VppMRoutePath(self.pg0.sw_if_index,
2727                                    MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT,
2728                                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2729                      VppMRoutePath(self.pg1.sw_if_index,
2730                                    MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2731                                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2732                      VppMRoutePath(self.pg2.sw_if_index,
2733                                    MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2734                                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2735                      VppMRoutePath(self.pg3.sw_if_index,
2736                                    MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2737                                    proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)],
2738                     table_id=t.table_id).add_vpp_config()
2739                 routes[ii].append({'uni': uni,
2740                                    'multi': multi})
2741
2742         #
2743         # replace the tables a few times
2744         #
2745         for kk in range(3):
2746             # replace each table
2747             for t in self.tables:
2748                 t.replace_begin()
2749
2750             # all the routes are still there
2751             for ii, t in enumerate(self.tables):
2752                 dump = t.dump()
2753                 mdump = t.mdump()
2754                 for r in routes[ii]:
2755                     self.assertTrue(find_route_in_dump(dump, r['uni'], t))
2756                     self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t))
2757
2758             # redownload the even numbered routes
2759             for ii, t in enumerate(self.tables):
2760                 for jj in range(0, N_ROUTES, 2):
2761                     routes[ii][jj]['uni'].add_vpp_config()
2762                     routes[ii][jj]['multi'].add_vpp_config()
2763
2764             # signal each table converged
2765             for t in self.tables:
2766                 t.replace_end()
2767
2768             # we should find the even routes, but not the odd
2769             for ii, t in enumerate(self.tables):
2770                 dump = t.dump()
2771                 mdump = t.mdump()
2772                 for jj in range(0, N_ROUTES, 2):
2773                     self.assertTrue(find_route_in_dump(
2774                         dump, routes[ii][jj]['uni'], t))
2775                     self.assertTrue(find_mroute_in_dump(
2776                         mdump, routes[ii][jj]['multi'], t))
2777                 for jj in range(1, N_ROUTES - 1, 2):
2778                     self.assertFalse(find_route_in_dump(
2779                         dump, routes[ii][jj]['uni'], t))
2780                     self.assertFalse(find_mroute_in_dump(
2781                         mdump, routes[ii][jj]['multi'], t))
2782
2783             # reload all the routes
2784             for ii, t in enumerate(self.tables):
2785                 for r in routes[ii]:
2786                     r['uni'].add_vpp_config()
2787                     r['multi'].add_vpp_config()
2788
2789             # all the routes are still there
2790             for ii, t in enumerate(self.tables):
2791                 dump = t.dump()
2792                 mdump = t.mdump()
2793                 for r in routes[ii]:
2794                     self.assertTrue(find_route_in_dump(dump, r['uni'], t))
2795                     self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t))
2796
2797         #
2798         # finally flush the tables for good measure
2799         #
2800         for t in self.tables:
2801             t.flush()
2802             self.assertEqual(len(t.dump()), 2)
2803             self.assertEqual(len(t.mdump()), 5)
2804
2805
2806 class TestIP6Replace(VppTestCase):
2807     """ IPv4 Interface Address Replace """
2808
2809     @classmethod
2810     def setUpClass(cls):
2811         super(TestIP6Replace, cls).setUpClass()
2812
2813     @classmethod
2814     def tearDownClass(cls):
2815         super(TestIP6Replace, cls).tearDownClass()
2816
2817     def setUp(self):
2818         super(TestIP6Replace, self).setUp()
2819
2820         self.create_pg_interfaces(range(4))
2821
2822         for i in self.pg_interfaces:
2823             i.admin_up()
2824
2825     def tearDown(self):
2826         super(TestIP6Replace, self).tearDown()
2827         for i in self.pg_interfaces:
2828             i.admin_down()
2829
2830     def get_n_pfxs(self, intf):
2831         return len(self.vapi.ip_address_dump(intf.sw_if_index, True))
2832
2833     def test_replace(self):
2834         """ IP interface address replace """
2835
2836         intf_pfxs = [[], [], [], []]
2837
2838         # add prefixes to each of the interfaces
2839         for i in range(len(self.pg_interfaces)):
2840             intf = self.pg_interfaces[i]
2841
2842             # 2001:16:x::1/64
2843             addr = "2001:16:%d::1" % intf.sw_if_index
2844             a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2845             intf_pfxs[i].append(a)
2846
2847             # 2001:16:x::2/64 - a different address in the same subnet as above
2848             addr = "2001:16:%d::2" % intf.sw_if_index
2849             a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2850             intf_pfxs[i].append(a)
2851
2852             # 2001:15:x::2/64 - a different address and subnet
2853             addr = "2001:15:%d::2" % intf.sw_if_index
2854             a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2855             intf_pfxs[i].append(a)
2856
2857         # a dump should n_address in it
2858         for intf in self.pg_interfaces:
2859             self.assertEqual(self.get_n_pfxs(intf), 3)
2860
2861         #
2862         # remove all the address thru a replace
2863         #
2864         self.vapi.sw_interface_address_replace_begin()
2865         self.vapi.sw_interface_address_replace_end()
2866         for intf in self.pg_interfaces:
2867             self.assertEqual(self.get_n_pfxs(intf), 0)
2868
2869         #
2870         # add all the interface addresses back
2871         #
2872         for p in intf_pfxs:
2873             for v in p:
2874                 v.add_vpp_config()
2875         for intf in self.pg_interfaces:
2876             self.assertEqual(self.get_n_pfxs(intf), 3)
2877
2878         #
2879         # replace again, but this time update/re-add the address on the first
2880         # two interfaces
2881         #
2882         self.vapi.sw_interface_address_replace_begin()
2883
2884         for p in intf_pfxs[:2]:
2885             for v in p:
2886                 v.add_vpp_config()
2887
2888         self.vapi.sw_interface_address_replace_end()
2889
2890         # on the first two the address still exist,
2891         # on the other two they do not
2892         for intf in self.pg_interfaces[:2]:
2893             self.assertEqual(self.get_n_pfxs(intf), 3)
2894         for p in intf_pfxs[:2]:
2895             for v in p:
2896                 self.assertTrue(v.query_vpp_config())
2897         for intf in self.pg_interfaces[2:]:
2898             self.assertEqual(self.get_n_pfxs(intf), 0)
2899
2900         #
2901         # add all the interface addresses back on the last two
2902         #
2903         for p in intf_pfxs[2:]:
2904             for v in p:
2905                 v.add_vpp_config()
2906         for intf in self.pg_interfaces:
2907             self.assertEqual(self.get_n_pfxs(intf), 3)
2908
2909         #
2910         # replace again, this time add different prefixes on all the interfaces
2911         #
2912         self.vapi.sw_interface_address_replace_begin()
2913
2914         pfxs = []
2915         for intf in self.pg_interfaces:
2916             # 2001:18:x::1/64
2917             addr = "2001:18:%d::1" % intf.sw_if_index
2918             pfxs.append(VppIpInterfaceAddress(self, intf, addr,
2919                                               64).add_vpp_config())
2920
2921         self.vapi.sw_interface_address_replace_end()
2922
2923         # only .18 should exist on each interface
2924         for intf in self.pg_interfaces:
2925             self.assertEqual(self.get_n_pfxs(intf), 1)
2926         for pfx in pfxs:
2927             self.assertTrue(pfx.query_vpp_config())
2928
2929         #
2930         # remove everything
2931         #
2932         self.vapi.sw_interface_address_replace_begin()
2933         self.vapi.sw_interface_address_replace_end()
2934         for intf in self.pg_interfaces:
2935             self.assertEqual(self.get_n_pfxs(intf), 0)
2936
2937         #
2938         # add prefixes to each interface. post-begin add the prefix from
2939         # interface X onto interface Y. this would normally be an error
2940         # since it would generate a 'duplicate address' warning. but in
2941         # this case, since what is newly downloaded is sane, it's ok
2942         #
2943         for intf in self.pg_interfaces:
2944             # 2001:18:x::1/64
2945             addr = "2001:18:%d::1" % intf.sw_if_index
2946             VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2947
2948         self.vapi.sw_interface_address_replace_begin()
2949
2950         pfxs = []
2951         for intf in self.pg_interfaces:
2952             # 2001:18:x::1/64
2953             addr = "2001:18:%d::1" % (intf.sw_if_index + 1)
2954             pfxs.append(VppIpInterfaceAddress(self, intf,
2955                                               addr, 64).add_vpp_config())
2956
2957         self.vapi.sw_interface_address_replace_end()
2958
2959         self.logger.info(self.vapi.cli("sh int addr"))
2960
2961         for intf in self.pg_interfaces:
2962             self.assertEqual(self.get_n_pfxs(intf), 1)
2963         for pfx in pfxs:
2964             self.assertTrue(pfx.query_vpp_config())
2965
2966
2967 class TestIP6LinkLocal(VppTestCase):
2968     """ IPv6 Link Local """
2969
2970     @classmethod
2971     def setUpClass(cls):
2972         super(TestIP6LinkLocal, cls).setUpClass()
2973
2974     @classmethod
2975     def tearDownClass(cls):
2976         super(TestIP6LinkLocal, cls).tearDownClass()
2977
2978     def setUp(self):
2979         super(TestIP6LinkLocal, self).setUp()
2980
2981         self.create_pg_interfaces(range(2))
2982
2983         for i in self.pg_interfaces:
2984             i.admin_up()
2985
2986     def tearDown(self):
2987         super(TestIP6LinkLocal, self).tearDown()
2988         for i in self.pg_interfaces:
2989             i.admin_down()
2990
2991     def test_ip6_ll(self):
2992         """ IPv6 Link Local """
2993
2994         #
2995         # two APIs to add a link local address.
2996         #   1 - just like any other prefix
2997         #   2 - with the special set LL API
2998         #
2999
3000         #
3001         # First with the API to set a 'normal' prefix
3002         #
3003         ll1 = "fe80:1::1"
3004         ll2 = "fe80:2::2"
3005         ll3 = "fe80:3::3"
3006
3007         VppNeighbor(self,
3008                     self.pg0.sw_if_index,
3009                     self.pg0.remote_mac,
3010                     ll2).add_vpp_config()
3011
3012         VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config()
3013
3014         #
3015         # should be able to ping the ll
3016         #
3017         p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
3018                                   dst=self.pg0.local_mac) /
3019                             IPv6(src=ll2,
3020                                  dst=ll1) /
3021                             ICMPv6EchoRequest())
3022
3023         self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
3024
3025         #
3026         # change the link-local on pg0
3027         #
3028         v_ll3 = VppIpInterfaceAddress(self, self.pg0,
3029                                       ll3, 128).add_vpp_config()
3030
3031         p_echo_request_3 = (Ether(src=self.pg0.remote_mac,
3032                                   dst=self.pg0.local_mac) /
3033                             IPv6(src=ll2,
3034                                  dst=ll3) /
3035                             ICMPv6EchoRequest())
3036
3037         self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
3038
3039         #
3040         # set a normal v6 prefix on the link
3041         #
3042         self.pg0.config_ip6()
3043
3044         self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
3045
3046         # the link-local cannot be removed
3047         with self.vapi.assert_negative_api_retval():
3048             v_ll3.remove_vpp_config()
3049
3050         #
3051         # Use the specific link-local API on pg1
3052         #
3053         VppIp6LinkLocalAddress(self, self.pg1, ll1).add_vpp_config()
3054         self.send_and_expect(self.pg1, [p_echo_request_1], self.pg1)
3055
3056         VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config()
3057         self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1)
3058
3059     def test_ip6_ll_p2p(self):
3060         """ IPv6 Link Local P2P (GRE)"""
3061
3062         self.pg0.config_ip4()
3063         self.pg0.resolve_arp()
3064         gre_if = VppGreInterface(self,
3065                                  self.pg0.local_ip4,
3066                                  self.pg0.remote_ip4).add_vpp_config()
3067         gre_if.admin_up()
3068
3069         ll1 = "fe80:1::1"
3070         ll2 = "fe80:2::2"
3071
3072         VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
3073
3074         self.logger.info(self.vapi.cli("sh ip6-ll gre0 fe80:2::2"))
3075
3076         p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
3077                                   dst=self.pg0.local_mac) /
3078                             IP(src=self.pg0.remote_ip4,
3079                                dst=self.pg0.local_ip4) /
3080                             GRE() /
3081                             IPv6(src=ll2, dst=ll1) /
3082                             ICMPv6EchoRequest())
3083         self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
3084
3085         self.pg0.unconfig_ip4()
3086         gre_if.remove_vpp_config()
3087
3088     def test_ip6_ll_p2mp(self):
3089         """ IPv6 Link Local P2MP (GRE)"""
3090
3091         self.pg0.config_ip4()
3092         self.pg0.resolve_arp()
3093
3094         gre_if = VppGreInterface(
3095             self,
3096             self.pg0.local_ip4,
3097             "0.0.0.0",
3098             mode=(VppEnum.vl_api_tunnel_mode_t.
3099                   TUNNEL_API_MODE_MP)).add_vpp_config()
3100         gre_if.admin_up()
3101
3102         ll1 = "fe80:1::1"
3103         ll2 = "fe80:2::2"
3104
3105         VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config()
3106
3107         p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
3108                                   dst=self.pg0.local_mac) /
3109                             IP(src=self.pg0.remote_ip4,
3110                                dst=self.pg0.local_ip4) /
3111                             GRE() /
3112                             IPv6(src=ll2, dst=ll1) /
3113                             ICMPv6EchoRequest())
3114
3115         # no route back at this point
3116         self.send_and_assert_no_replies(self.pg0, [p_echo_request_1])
3117
3118         # add teib entry for the peer
3119         teib = VppTeib(self, gre_if, ll2, self.pg0.remote_ip4)
3120         teib.add_vpp_config()
3121
3122         self.logger.info(self.vapi.cli("sh ip6-ll gre0 %s" % ll2))
3123         self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
3124
3125         # teardown
3126         self.pg0.unconfig_ip4()
3127
3128
3129 class TestIPv6PathMTU(VppTestCase):
3130     """ IPv6 Path MTU """
3131
3132     def setUp(self):
3133         super(TestIPv6PathMTU, self).setUp()
3134
3135         self.create_pg_interfaces(range(2))
3136
3137         # setup all interfaces
3138         for i in self.pg_interfaces:
3139             i.admin_up()
3140             i.config_ip6()
3141             i.resolve_ndp()
3142
3143     def tearDown(self):
3144         super(TestIPv6PathMTU, self).tearDown()
3145         for i in self.pg_interfaces:
3146             i.unconfig_ip6()
3147             i.admin_down()
3148
3149     def test_path_mtu_local(self):
3150         """ Path MTU for attached neighbour """
3151
3152         self.vapi.cli("set log class ip level debug")
3153         #
3154         # The goal here is not test that fragmentation works correctly,
3155         # that's done elsewhere, the intent is to ensure that the Path MTU
3156         # settings are honoured.
3157         #
3158
3159         #
3160         # IPv6 will only frag locally generated packets, so use tunnelled
3161         # packets post encap
3162         #
3163         tun = VppIpIpTunInterface(
3164             self,
3165             self.pg1,
3166             self.pg1.local_ip6,
3167             self.pg1.remote_ip6)
3168         tun.add_vpp_config()
3169         tun.admin_up()
3170         tun.config_ip6()
3171
3172         # set the interface MTU to a reasonable value
3173         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3174                                        [2800, 0, 0, 0])
3175
3176         p_2k = (Ether(dst=self.pg0.local_mac,
3177                       src=self.pg0.remote_mac) /
3178                 IPv6(src=self.pg0.remote_ip6,
3179                      dst=tun.remote_ip6) /
3180                 UDP(sport=1234, dport=5678) /
3181                 Raw(b'0xa' * 1000))
3182         p_1k = (Ether(dst=self.pg0.local_mac,
3183                       src=self.pg0.remote_mac) /
3184                 IPv6(src=self.pg0.remote_ip6,
3185                      dst=tun.remote_ip6) /
3186                 UDP(sport=1234, dport=5678) /
3187                 Raw(b'0xa' * 600))
3188
3189         nbr = VppNeighbor(self,
3190                           self.pg1.sw_if_index,
3191                           self.pg1.remote_mac,
3192                           self.pg1.remote_ip6).add_vpp_config()
3193
3194         # this is now the interface MTU frags
3195         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3196         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3197
3198         # drop the path MTU for this neighbour to below the interface MTU
3199         # expect more frags
3200         pmtu = VppIpPathMtu(self, self.pg1.remote_ip6, 1300).add_vpp_config()
3201
3202         # print/format the adj delegate and trackers
3203         self.logger.info(self.vapi.cli("sh ip pmtu"))
3204         self.logger.info(self.vapi.cli("sh adj 7"))
3205
3206         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3207         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3208
3209         # increase the path MTU to more than the interface
3210         # expect to use the interface MTU
3211         pmtu.modify(8192)
3212
3213         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3214         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3215
3216         # go back to an MTU from the path
3217         pmtu.modify(1300)
3218
3219         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3220         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3221
3222         # raise the interface's MTU
3223         # should still use that of the path
3224         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3225                                        [2000, 0, 0, 0])
3226         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3227         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3228
3229         # set path high and interface low
3230         pmtu.modify(2000)
3231         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3232                                        [1300, 0, 0, 0])
3233         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3234         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3235
3236         # remove the path MTU
3237         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3238                                        [2800, 0, 0, 0])
3239         pmtu.modify(0)
3240
3241         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3242         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3243
3244     def test_path_mtu_remote(self):
3245         """ Path MTU for remote neighbour """
3246
3247         self.vapi.cli("set log class ip level debug")
3248         #
3249         # The goal here is not test that fragmentation works correctly,
3250         # that's done elsewhere, the intent is to ensure that the Path MTU
3251         # settings are honoured.
3252         #
3253         tun_dst = "2001::1"
3254
3255         route = VppIpRoute(
3256             self, tun_dst, 64,
3257             [VppRoutePath(self.pg1.remote_ip6,
3258                           self.pg1.sw_if_index)]).add_vpp_config()
3259
3260         #
3261         # IPv6 will only frag locally generated packets, so use tunnelled
3262         # packets post encap
3263         #
3264         tun = VppIpIpTunInterface(
3265             self,
3266             self.pg1,
3267             self.pg1.local_ip6,
3268             tun_dst)
3269         tun.add_vpp_config()
3270         tun.admin_up()
3271         tun.config_ip6()
3272
3273         # set the interface MTU to a reasonable value
3274         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3275                                        [2800, 0, 0, 0])
3276
3277         p_2k = (Ether(dst=self.pg0.local_mac,
3278                       src=self.pg0.remote_mac) /
3279                 IPv6(src=self.pg0.remote_ip6,
3280                      dst=tun.remote_ip6) /
3281                 UDP(sport=1234, dport=5678) /
3282                 Raw(b'0xa' * 1000))
3283         p_1k = (Ether(dst=self.pg0.local_mac,
3284                       src=self.pg0.remote_mac) /
3285                 IPv6(src=self.pg0.remote_ip6,
3286                      dst=tun.remote_ip6) /
3287                 UDP(sport=1234, dport=5678) /
3288                 Raw(b'0xa' * 600))
3289
3290         nbr = VppNeighbor(self,
3291                           self.pg1.sw_if_index,
3292                           self.pg1.remote_mac,
3293                           self.pg1.remote_ip6).add_vpp_config()
3294
3295         # this is now the interface MTU frags
3296         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3297         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3298
3299         # drop the path MTU for this neighbour to below the interface MTU
3300         # expect more frags
3301         pmtu = VppIpPathMtu(self, tun_dst, 1300).add_vpp_config()
3302
3303         # print/format the fib entry/dpo
3304         self.logger.info(self.vapi.cli("sh ip6 fib 2001::1"))
3305
3306         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3307         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3308
3309         # increase the path MTU to more than the interface
3310         # expect to use the interface MTU
3311         pmtu.modify(8192)
3312
3313         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3314         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3315
3316         # go back to an MTU from the path
3317         pmtu.modify(1300)
3318
3319         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3320         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3321
3322         # raise the interface's MTU
3323         # should still use that of the path
3324         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3325                                        [2000, 0, 0, 0])
3326         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3327         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3328
3329         # turn the tun_dst into an attached neighbour
3330         route.modify([VppRoutePath("::",
3331                                    self.pg1.sw_if_index)])
3332         nbr2 = VppNeighbor(self,
3333                            self.pg1.sw_if_index,
3334                            self.pg1.remote_mac,
3335                            tun_dst).add_vpp_config()
3336
3337         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3338         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3339
3340         # add back to not attached
3341         nbr2.remove_vpp_config()
3342         route.modify([VppRoutePath(self.pg1.remote_ip6,
3343                                    self.pg1.sw_if_index)])
3344
3345         # set path high and interface low
3346         pmtu.modify(2000)
3347         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3348                                        [1300, 0, 0, 0])
3349         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3350         self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3351
3352         # remove the path MTU
3353         self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3354                                        [2800, 0, 0, 0])
3355         pmtu.remove_vpp_config()
3356         self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3357         self.send_and_expect(self.pg0, [p_1k], self.pg1)
3358
3359
3360 class TestIPFibSource(VppTestCase):
3361     """ IPv6 Table FibSource """
3362
3363     @classmethod
3364     def setUpClass(cls):
3365         super(TestIPFibSource, cls).setUpClass()
3366
3367     @classmethod
3368     def tearDownClass(cls):
3369         super(TestIPFibSource, cls).tearDownClass()
3370
3371     def setUp(self):
3372         super(TestIPFibSource, self).setUp()
3373
3374         self.create_pg_interfaces(range(2))
3375
3376         for i in self.pg_interfaces:
3377             i.admin_up()
3378             i.config_ip6()
3379             i.resolve_arp()
3380             i.generate_remote_hosts(2)
3381             i.configure_ipv6_neighbors()
3382
3383     def tearDown(self):
3384         super(TestIPFibSource, self).tearDown()
3385         for i in self.pg_interfaces:
3386             i.admin_down()
3387             i.unconfig_ip4()
3388
3389     def test_fib_source(self):
3390         """ IP Table FibSource """
3391
3392         routes = self.vapi.ip_route_v2_dump(0, True)
3393
3394         # 2 interfaces (4 routes) + 2 specials + 4 neighbours = 10 routes
3395         self.assertEqual(len(routes), 10)
3396
3397         # dump all the sources in the FIB
3398         sources = self.vapi.fib_source_dump()
3399         for source in sources:
3400             if (source.src.name == "API"):
3401                 api_source = source.src
3402             if (source.src.name == "interface"):
3403                 intf_source = source.src
3404             if (source.src.name == "adjacency"):
3405                 adj_source = source.src
3406             if (source.src.name == "special"):
3407                 special_source = source.src
3408             if (source.src.name == "default-route"):
3409                 dr_source = source.src
3410
3411         # dump the individual route types
3412         routes = self.vapi.ip_route_v2_dump(0, True, src=adj_source.id)
3413         self.assertEqual(len(routes), 4)
3414         routes = self.vapi.ip_route_v2_dump(0, True, src=intf_source.id)
3415         self.assertEqual(len(routes), 4)
3416         routes = self.vapi.ip_route_v2_dump(0, True, src=special_source.id)
3417         self.assertEqual(len(routes), 1)
3418         routes = self.vapi.ip_route_v2_dump(0, True, src=dr_source.id)
3419         self.assertEqual(len(routes), 1)
3420
3421         # add a new soure that'a better than the API
3422         self.vapi.fib_source_add(src={'name': "bgp",
3423                                       "priority": api_source.priority - 1})
3424
3425         # dump all the sources to check our new one is there
3426         sources = self.vapi.fib_source_dump()
3427
3428         for source in sources:
3429             if (source.src.name == "bgp"):
3430                 bgp_source = source.src
3431
3432         self.assertTrue(bgp_source)
3433         self.assertEqual(bgp_source.priority,
3434                          api_source.priority - 1)
3435
3436         # add a route with the default API source
3437         r1 = VppIpRouteV2(
3438             self, "2001::1", 128,
3439             [VppRoutePath(self.pg0.remote_ip6,
3440                           self.pg0.sw_if_index)]).add_vpp_config()
3441
3442         r2 = VppIpRouteV2(self, "2001::1", 128,
3443                           [VppRoutePath(self.pg1.remote_ip6,
3444                                         self.pg1.sw_if_index)],
3445                           src=bgp_source.id).add_vpp_config()
3446
3447         # ensure the BGP source takes priority
3448         p = (Ether(src=self.pg0.remote_mac,
3449                    dst=self.pg0.local_mac) /
3450              IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
3451              inet6.UDP(sport=1234, dport=1234) /
3452              Raw(b'\xa5' * 100))
3453
3454         self.send_and_expect(self.pg0, [p], self.pg1)
3455
3456         r2.remove_vpp_config()
3457         r1.remove_vpp_config()
3458
3459         self.assertFalse(find_route(self, "2001::1", 128))
3460
3461
3462 if __name__ == '__main__':
3463     unittest.main(testRunner=VppTestRunner)