6 from parameterized import parameterized
8 import scapy.layers.inet6 as inet6
9 from scapy.contrib.mpls import MPLS
10 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
11 ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
12 ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
13 ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, IPv6ExtHdrHopByHop
14 from scapy.layers.l2 import Ether, Dot1Q
15 from scapy.packet import Raw
16 from scapy.utils import inet_pton, inet_ntop
17 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
21 from framework import VppTestCase, VppTestRunner
22 from util import ppp, ip6_normalize, mk_ll_addr
23 from vpp_ip import DpoProto, VppIpAddress
24 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
25 VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
26 VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, \
28 from vpp_neighbor import find_nbr, VppNeighbor
29 from vpp_pg_interface import is_ipv6_misc
30 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
31 from ipaddress import IPv6Network, IPv4Network, IPv6Address
33 AF_INET6 = socket.AF_INET6
43 class TestIPv6ND(VppTestCase):
44 def validate_ra(self, intf, rx, dst_ip=None):
46 dst_ip = intf.remote_ip6
48 # unicasted packets must come to the unicast mac
49 self.assertEqual(rx[Ether].dst, intf.remote_mac)
51 # and from the router's MAC
52 self.assertEqual(rx[Ether].src, intf.local_mac)
54 # the rx'd RA should be addressed to the sender's source
55 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
56 self.assertEqual(in6_ptop(rx[IPv6].dst),
59 # and come from the router's link local
60 self.assertTrue(in6_islladdr(rx[IPv6].src))
61 self.assertEqual(in6_ptop(rx[IPv6].src),
62 in6_ptop(mk_ll_addr(intf.local_mac)))
64 def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
66 dst_ip = intf.remote_ip6
68 dst_ip = intf.local_ip6
70 # unicasted packets must come to the unicast mac
71 self.assertEqual(rx[Ether].dst, intf.remote_mac)
73 # and from the router's MAC
74 self.assertEqual(rx[Ether].src, intf.local_mac)
76 # the rx'd NA should be addressed to the sender's source
77 self.assertTrue(rx.haslayer(ICMPv6ND_NA))
78 self.assertEqual(in6_ptop(rx[IPv6].dst),
81 # and come from the target address
83 in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
85 # Dest link-layer options should have the router's MAC
86 dll = rx[ICMPv6NDOptDstLLAddr]
87 self.assertEqual(dll.lladdr, intf.local_mac)
89 def validate_ns(self, intf, rx, tgt_ip):
90 nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
91 dst_ip = inet_ntop(AF_INET6, nsma)
94 self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
96 # and from the router's MAC
97 self.assertEqual(rx[Ether].src, intf.local_mac)
99 # the rx'd NS should be addressed to an mcast address
100 # derived from the target address
102 in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
104 # expect the tgt IP in the NS header
106 self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
108 # packet is from the router's local address
110 in6_ptop(rx[IPv6].src), intf.local_ip6)
112 # Src link-layer options should have the router's MAC
113 sll = rx[ICMPv6NDOptSrcLLAddr]
114 self.assertEqual(sll.lladdr, intf.local_mac)
116 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
117 filter_out_fn=is_ipv6_misc):
118 intf.add_stream(pkts)
119 self.pg_enable_capture(self.pg_interfaces)
121 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
123 self.assertEqual(len(rx), 1)
125 self.validate_ra(intf, rx, dst_ip)
127 def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
129 filter_out_fn=is_ipv6_misc):
130 intf.add_stream(pkts)
131 self.pg_enable_capture(self.pg_interfaces)
133 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
135 self.assertEqual(len(rx), 1)
137 self.validate_na(intf, rx, dst_ip, tgt_ip)
139 def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
140 filter_out_fn=is_ipv6_misc):
141 tx_intf.add_stream(pkts)
142 self.pg_enable_capture(self.pg_interfaces)
144 rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
146 self.assertEqual(len(rx), 1)
148 self.validate_ns(rx_intf, rx, tgt_ip)
150 def verify_ip(self, rx, smac, dmac, sip, dip):
152 self.assertEqual(ether.dst, dmac)
153 self.assertEqual(ether.src, smac)
156 self.assertEqual(ip.src, sip)
157 self.assertEqual(ip.dst, dip)
160 class TestIPv6(TestIPv6ND):
161 """ IPv6 Test Case """
165 super(TestIPv6, cls).setUpClass()
168 def tearDownClass(cls):
169 super(TestIPv6, cls).tearDownClass()
173 Perform test setup before test case.
176 - create 3 pg interfaces
177 - untagged pg0 interface
178 - Dot1Q subinterface on pg1
179 - Dot1AD subinterface on pg2
181 - put it into UP state
183 - resolve neighbor address using NDP
184 - configure 200 fib entries
186 :ivar list interfaces: pg interfaces and subinterfaces.
187 :ivar dict flows: IPv4 packet flows in test.
189 *TODO:* Create AD sub interface
191 super(TestIPv6, self).setUp()
193 # create 3 pg interfaces
194 self.create_pg_interfaces(range(3))
196 # create 2 subinterfaces for p1 and pg2
197 self.sub_interfaces = [
198 VppDot1QSubint(self, self.pg1, 100),
199 VppDot1QSubint(self, self.pg2, 200)
200 # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
203 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
205 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
206 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
207 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
210 self.pg_if_packet_sizes = [64, 1500, 9020]
212 self.interfaces = list(self.pg_interfaces)
213 self.interfaces.extend(self.sub_interfaces)
215 # setup all interfaces
216 for i in self.interfaces:
222 """Run standard test teardown and log ``show ip6 neighbors``."""
223 for i in self.interfaces:
227 for i in self.sub_interfaces:
228 i.remove_vpp_config()
230 super(TestIPv6, self).tearDown()
231 if not self.vpp_dead:
232 self.logger.info(self.vapi.cli("show ip6 neighbors"))
233 # info(self.vapi.cli("show ip6 fib")) # many entries
235 def modify_packet(self, src_if, packet_size, pkt):
236 """Add load, set destination IP and extend packet to required packet
237 size for defined interface.
239 :param VppInterface src_if: Interface to create packet for.
240 :param int packet_size: Required packet size.
241 :param Scapy pkt: Packet to be modified.
243 dst_if_idx = packet_size / 10 % 2
244 dst_if = self.flows[src_if][dst_if_idx]
245 info = self.create_packet_info(src_if, dst_if)
246 payload = self.info_to_payload(info)
247 p = pkt / Raw(payload)
248 p[IPv6].dst = dst_if.remote_ip6
250 if isinstance(src_if, VppSubInterface):
251 p = src_if.add_dot1_layer(p)
252 self.extend_packet(p, packet_size)
256 def create_stream(self, src_if):
257 """Create input packet stream for defined interface.
259 :param VppInterface src_if: Interface to create packet stream for.
261 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
262 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
263 IPv6(src=src_if.remote_ip6) /
264 inet6.UDP(sport=1234, dport=1234))
266 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
267 for i in moves.range(self.pg_if_packet_sizes[0],
268 self.pg_if_packet_sizes[1], 10)]
269 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
270 for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
271 self.pg_if_packet_sizes[2] + hdr_ext,
277 def verify_capture(self, dst_if, capture):
278 """Verify captured input packet stream for defined interface.
280 :param VppInterface dst_if: Interface to verify captured packet stream
282 :param list capture: Captured packet stream.
284 self.logger.info("Verifying capture on interface %s" % dst_if.name)
286 for i in self.interfaces:
287 last_info[i.sw_if_index] = None
289 dst_sw_if_index = dst_if.sw_if_index
290 if hasattr(dst_if, 'parent'):
292 for packet in capture:
294 # Check VLAN tags and Ethernet header
295 packet = dst_if.remove_dot1_layer(packet)
296 self.assertTrue(Dot1Q not in packet)
299 udp = packet[inet6.UDP]
300 payload_info = self.payload_to_info(packet[Raw])
301 packet_index = payload_info.index
302 self.assertEqual(payload_info.dst, dst_sw_if_index)
304 "Got packet on port %s: src=%u (id=%u)" %
305 (dst_if.name, payload_info.src, packet_index))
306 next_info = self.get_next_packet_info_for_interface2(
307 payload_info.src, dst_sw_if_index,
308 last_info[payload_info.src])
309 last_info[payload_info.src] = next_info
310 self.assertTrue(next_info is not None)
311 self.assertEqual(packet_index, next_info.index)
312 saved_packet = next_info.data
313 # Check standard fields
315 ip.src, saved_packet[IPv6].src)
317 ip.dst, saved_packet[IPv6].dst)
319 udp.sport, saved_packet[inet6.UDP].sport)
321 udp.dport, saved_packet[inet6.UDP].dport)
323 self.logger.error(ppp("Unexpected or invalid packet:", packet))
325 for i in self.interfaces:
326 remaining_packet = self.get_next_packet_info_for_interface2(
327 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
328 self.assertTrue(remaining_packet is None,
329 "Interface %s: Packet expected from interface %s "
330 "didn't arrive" % (dst_if.name, i.name))
332 def test_next_header_anomaly(self):
333 """ IPv6 next header anomaly test
336 - ipv6 next header field = Fragment Header (44)
337 - next header is ICMPv6 Echo Request
338 - wait for reassembly
340 pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
341 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) /
344 self.pg0.add_stream(pkt)
347 # wait for reassembly
354 - Create IPv6 stream for pg0 interface
355 - Create IPv6 tagged streams for pg1's and pg2's subinterface.
356 - Send and verify received packets on each interface.
359 pkts = self.create_stream(self.pg0)
360 self.pg0.add_stream(pkts)
362 for i in self.sub_interfaces:
363 pkts = self.create_stream(i)
364 i.parent.add_stream(pkts)
366 self.pg_enable_capture(self.pg_interfaces)
369 pkts = self.pg0.get_capture()
370 self.verify_capture(self.pg0, pkts)
372 for i in self.sub_interfaces:
373 pkts = i.parent.get_capture()
374 self.verify_capture(i, pkts)
377 """ IPv6 Neighbour Solicitation Exceptions
380 - Send an NS Sourced from an address not covered by the link sub-net
381 - Send an NS to an mcast address the router has not joined
382 - Send NS for a target address the router does not onn.
386 # An NS from a non link source address
388 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
389 d = inet_ntop(AF_INET6, nsma)
391 p = (Ether(dst=in6_getnsmac(nsma)) /
392 IPv6(dst=d, src="2002::2") /
393 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
394 ICMPv6NDOptSrcLLAddr(
395 lladdr=self.pg0.remote_mac))
398 self.send_and_assert_no_replies(
400 "No response to NS source by address not on sub-net")
403 # An NS for sent to a solicited mcast group the router is
404 # not a member of FAILS
407 nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
408 d = inet_ntop(AF_INET6, nsma)
410 p = (Ether(dst=in6_getnsmac(nsma)) /
411 IPv6(dst=d, src=self.pg0.remote_ip6) /
412 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
413 ICMPv6NDOptSrcLLAddr(
414 lladdr=self.pg0.remote_mac))
417 self.send_and_assert_no_replies(
419 "No response to NS sent to unjoined mcast address")
422 # An NS whose target address is one the router does not own
424 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
425 d = inet_ntop(AF_INET6, nsma)
427 p = (Ether(dst=in6_getnsmac(nsma)) /
428 IPv6(dst=d, src=self.pg0.remote_ip6) /
429 ICMPv6ND_NS(tgt="fd::ffff") /
430 ICMPv6NDOptSrcLLAddr(
431 lladdr=self.pg0.remote_mac))
434 self.send_and_assert_no_replies(self.pg0, pkts,
435 "No response to NS for unknown target")
438 # A neighbor entry that has no associated FIB-entry
440 self.pg0.generate_remote_hosts(4)
441 nd_entry = VppNeighbor(self,
442 self.pg0.sw_if_index,
443 self.pg0.remote_hosts[2].mac,
444 self.pg0.remote_hosts[2].ip6,
446 nd_entry.add_vpp_config()
449 # check we have the neighbor, but no route
451 self.assertTrue(find_nbr(self,
452 self.pg0.sw_if_index,
453 self.pg0._remote_hosts[2].ip6))
454 self.assertFalse(find_route(self,
455 self.pg0._remote_hosts[2].ip6,
459 # send an NS from a link local address to the interface's global
462 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
464 dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
465 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
466 ICMPv6NDOptSrcLLAddr(
467 lladdr=self.pg0.remote_mac))
469 self.send_and_expect_na(self.pg0, p,
470 "NS from link-local",
471 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
472 tgt_ip=self.pg0.local_ip6)
475 # we should have learned an ND entry for the peer's link-local
476 # but not inserted a route to it in the FIB
478 self.assertTrue(find_nbr(self,
479 self.pg0.sw_if_index,
480 self.pg0._remote_hosts[2].ip6_ll))
481 self.assertFalse(find_route(self,
482 self.pg0._remote_hosts[2].ip6_ll,
486 # An NS to the router's own Link-local
488 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
490 dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
491 ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
492 ICMPv6NDOptSrcLLAddr(
493 lladdr=self.pg0.remote_mac))
495 self.send_and_expect_na(self.pg0, p,
496 "NS to/from link-local",
497 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
498 tgt_ip=self.pg0.local_ip6_ll)
501 # we should have learned an ND entry for the peer's link-local
502 # but not inserted a route to it in the FIB
504 self.assertTrue(find_nbr(self,
505 self.pg0.sw_if_index,
506 self.pg0._remote_hosts[3].ip6_ll))
507 self.assertFalse(find_route(self,
508 self.pg0._remote_hosts[3].ip6_ll,
511 def test_ns_duplicates(self):
515 # Generate some hosts on the LAN
517 self.pg1.generate_remote_hosts(3)
520 # Add host 1 on pg1 and pg2
522 ns_pg1 = VppNeighbor(self,
523 self.pg1.sw_if_index,
524 self.pg1.remote_hosts[1].mac,
525 self.pg1.remote_hosts[1].ip6)
526 ns_pg1.add_vpp_config()
527 ns_pg2 = VppNeighbor(self,
528 self.pg2.sw_if_index,
530 self.pg1.remote_hosts[1].ip6)
531 ns_pg2.add_vpp_config()
534 # IP packet destined for pg1 remote host arrives on pg1 again.
536 p = (Ether(dst=self.pg0.local_mac,
537 src=self.pg0.remote_mac) /
538 IPv6(src=self.pg0.remote_ip6,
539 dst=self.pg1.remote_hosts[1].ip6) /
540 inet6.UDP(sport=1234, dport=1234) /
543 self.pg0.add_stream(p)
544 self.pg_enable_capture(self.pg_interfaces)
547 rx1 = self.pg1.get_capture(1)
549 self.verify_ip(rx1[0],
551 self.pg1.remote_hosts[1].mac,
553 self.pg1.remote_hosts[1].ip6)
556 # remove the duplicate on pg1
557 # packet stream should generate NSs out of pg1
559 ns_pg1.remove_vpp_config()
561 self.send_and_expect_ns(self.pg0, self.pg1,
562 p, self.pg1.remote_hosts[1].ip6)
567 ns_pg1.add_vpp_config()
569 self.pg0.add_stream(p)
570 self.pg_enable_capture(self.pg_interfaces)
573 rx1 = self.pg1.get_capture(1)
575 self.verify_ip(rx1[0],
577 self.pg1.remote_hosts[1].mac,
579 self.pg1.remote_hosts[1].ip6)
581 def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
583 dst_ip = intf.remote_ip6
585 # unicasted packets must come to the unicast mac
586 self.assertEqual(rx[Ether].dst, intf.remote_mac)
588 # and from the router's MAC
589 self.assertEqual(rx[Ether].src, intf.local_mac)
591 # the rx'd RA should be addressed to the sender's source
592 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
593 self.assertEqual(in6_ptop(rx[IPv6].dst),
596 # and come from the router's link local
597 self.assertTrue(in6_islladdr(rx[IPv6].src))
598 self.assertEqual(in6_ptop(rx[IPv6].src),
599 in6_ptop(mk_ll_addr(intf.local_mac)))
601 # it should contain the links MTU
603 self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
605 # it should contain the source's link layer address option
606 sll = ra[ICMPv6NDOptSrcLLAddr]
607 self.assertEqual(sll.lladdr, intf.local_mac)
610 # the RA should not contain prefix information
611 self.assertFalse(ra.haslayer(
612 ICMPv6NDOptPrefixInfo))
614 raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
616 # the options are nested in the scapy packet in way that i cannot
617 # decipher how to decode. this 1st layer of option always returns
618 # nested classes, so a direct obj1=obj2 comparison always fails.
619 # however, the getlayer(.., 2) does give one instance.
620 # so we cheat here and construct a new opt instance for comparison
621 rd = ICMPv6NDOptPrefixInfo(
622 prefixlen=raos.prefixlen,
626 if type(pi_opt) is list:
627 for ii in range(len(pi_opt)):
628 self.assertEqual(pi_opt[ii], rd)
630 ICMPv6NDOptPrefixInfo, ii + 2)
632 self.assertEqual(pi_opt, raos, 'Expected: %s, received: %s'
633 % (pi_opt.show(dump=True),
634 raos.show(dump=True)))
636 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
637 filter_out_fn=is_ipv6_misc,
639 intf.add_stream(pkts)
640 self.pg_enable_capture(self.pg_interfaces)
642 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
644 self.assertEqual(len(rx), 1)
646 self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
649 """ IPv6 Router Solicitation Exceptions
655 # Before we begin change the IPv6 RA responses to use the unicast
656 # address - that way we will not confuse them with the periodic
657 # RAs which go to the mcast address
658 # Sit and wait for the first periodic RA.
662 self.pg0.ip6_ra_config(send_unicast=1)
665 # An RS from a link source address
666 # - expect an RA in return
668 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
670 dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
673 self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
676 # For the next RS sent the RA should be rate limited
678 self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
681 # When we reconfigure the IPv6 RA config,
682 # we reset the RA rate limiting,
683 # so we need to do this before each test below so as not to drop
684 # packets for rate limiting reasons. Test this works here.
686 self.pg0.ip6_ra_config(send_unicast=1)
687 self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
690 # An RS sent from a non-link local source
692 self.pg0.ip6_ra_config(send_unicast=1)
693 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
694 IPv6(dst=self.pg0.local_ip6,
698 self.send_and_assert_no_replies(self.pg0, pkts,
699 "RS from non-link source")
702 # Source an RS from a link local address
704 self.pg0.ip6_ra_config(send_unicast=1)
705 ll = mk_ll_addr(self.pg0.remote_mac)
706 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
707 IPv6(dst=self.pg0.local_ip6, src=ll) /
710 self.send_and_expect_ra(self.pg0, pkts,
711 "RS sourced from link-local",
715 # Send the RS multicast
717 self.pg0.ip6_ra_config(send_unicast=1)
718 dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
719 ll = mk_ll_addr(self.pg0.remote_mac)
720 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
721 IPv6(dst="ff02::2", src=ll) /
724 self.send_and_expect_ra(self.pg0, pkts,
725 "RS sourced from link-local",
729 # Source from the unspecified address ::. This happens when the RS
730 # is sent before the host has a configured address/sub-net,
731 # i.e. auto-config. Since the sender has no IP address, the reply
732 # comes back mcast - so the capture needs to not filter this.
733 # If we happen to pick up the periodic RA at this point then so be it,
736 self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
737 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
738 IPv6(dst="ff02::2", src="::") /
741 self.send_and_expect_ra(self.pg0, pkts,
742 "RS sourced from unspecified",
747 # Configure The RA to announce the links prefix
749 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
750 self.pg0.local_ip6_prefix_len))
753 # RAs should now contain the prefix information option
755 opt = ICMPv6NDOptPrefixInfo(
756 prefixlen=self.pg0.local_ip6_prefix_len,
757 prefix=self.pg0.local_ip6,
761 self.pg0.ip6_ra_config(send_unicast=1)
762 ll = mk_ll_addr(self.pg0.remote_mac)
763 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
764 IPv6(dst=self.pg0.local_ip6, src=ll) /
766 self.send_and_expect_ra(self.pg0, p,
767 "RA with prefix-info",
772 # Change the prefix info to not off-link
775 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
776 self.pg0.local_ip6_prefix_len),
779 opt = ICMPv6NDOptPrefixInfo(
780 prefixlen=self.pg0.local_ip6_prefix_len,
781 prefix=self.pg0.local_ip6,
785 self.pg0.ip6_ra_config(send_unicast=1)
786 self.send_and_expect_ra(self.pg0, p,
787 "RA with Prefix info with L-flag=0",
792 # Change the prefix info to not off-link, no-autoconfig
793 # L and A flag are clear in the advert
795 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
796 self.pg0.local_ip6_prefix_len),
800 opt = ICMPv6NDOptPrefixInfo(
801 prefixlen=self.pg0.local_ip6_prefix_len,
802 prefix=self.pg0.local_ip6,
806 self.pg0.ip6_ra_config(send_unicast=1)
807 self.send_and_expect_ra(self.pg0, p,
808 "RA with Prefix info with A & L-flag=0",
813 # Change the flag settings back to the defaults
814 # L and A flag are set in the advert
816 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
817 self.pg0.local_ip6_prefix_len))
819 opt = ICMPv6NDOptPrefixInfo(
820 prefixlen=self.pg0.local_ip6_prefix_len,
821 prefix=self.pg0.local_ip6,
825 self.pg0.ip6_ra_config(send_unicast=1)
826 self.send_and_expect_ra(self.pg0, p,
827 "RA with Prefix info",
832 # Change the prefix info to not off-link, no-autoconfig
833 # L and A flag are clear in the advert
835 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
836 self.pg0.local_ip6_prefix_len),
840 opt = ICMPv6NDOptPrefixInfo(
841 prefixlen=self.pg0.local_ip6_prefix_len,
842 prefix=self.pg0.local_ip6,
846 self.pg0.ip6_ra_config(send_unicast=1)
847 self.send_and_expect_ra(self.pg0, p,
848 "RA with Prefix info with A & L-flag=0",
853 # Use the reset to defaults option to revert to defaults
854 # L and A flag are clear in the advert
856 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
857 self.pg0.local_ip6_prefix_len),
860 opt = ICMPv6NDOptPrefixInfo(
861 prefixlen=self.pg0.local_ip6_prefix_len,
862 prefix=self.pg0.local_ip6,
866 self.pg0.ip6_ra_config(send_unicast=1)
867 self.send_and_expect_ra(self.pg0, p,
868 "RA with Prefix reverted to defaults",
873 # Advertise Another prefix. With no L-flag/A-flag
875 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
876 self.pg1.local_ip6_prefix_len),
880 opt = [ICMPv6NDOptPrefixInfo(
881 prefixlen=self.pg0.local_ip6_prefix_len,
882 prefix=self.pg0.local_ip6,
885 ICMPv6NDOptPrefixInfo(
886 prefixlen=self.pg1.local_ip6_prefix_len,
887 prefix=self.pg1.local_ip6,
891 self.pg0.ip6_ra_config(send_unicast=1)
892 ll = mk_ll_addr(self.pg0.remote_mac)
893 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
894 IPv6(dst=self.pg0.local_ip6, src=ll) /
896 self.send_and_expect_ra(self.pg0, p,
897 "RA with multiple Prefix infos",
902 # Remove the first prefix-info - expect the second is still in the
905 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
906 self.pg0.local_ip6_prefix_len),
909 opt = ICMPv6NDOptPrefixInfo(
910 prefixlen=self.pg1.local_ip6_prefix_len,
911 prefix=self.pg1.local_ip6,
915 self.pg0.ip6_ra_config(send_unicast=1)
916 self.send_and_expect_ra(self.pg0, p,
917 "RA with Prefix reverted to defaults",
922 # Remove the second prefix-info - expect no prefix-info in the adverts
924 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
925 self.pg1.local_ip6_prefix_len),
928 self.pg0.ip6_ra_config(send_unicast=1)
929 self.send_and_expect_ra(self.pg0, p,
930 "RA with Prefix reverted to defaults",
934 # Reset the periodic advertisements back to default values
936 self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
939 class TestIPv6IfAddrRoute(VppTestCase):
940 """ IPv6 Interface Addr Route Test Case """
944 super(TestIPv6IfAddrRoute, cls).setUpClass()
947 def tearDownClass(cls):
948 super(TestIPv6IfAddrRoute, cls).tearDownClass()
951 super(TestIPv6IfAddrRoute, self).setUp()
953 # create 1 pg interface
954 self.create_pg_interfaces(range(1))
956 for i in self.pg_interfaces:
962 super(TestIPv6IfAddrRoute, self).tearDown()
963 for i in self.pg_interfaces:
967 def test_ipv6_ifaddrs_same_prefix(self):
968 """ IPv6 Interface Addresses Same Prefix test
972 - Verify no route in FIB for prefix 2001:10::/64
973 - Configure IPv4 address 2001:10::10/64 on an interface
974 - Verify route in FIB for prefix 2001:10::/64
975 - Configure IPv4 address 2001:10::20/64 on an interface
976 - Delete 2001:10::10/64 from interface
977 - Verify route in FIB for prefix 2001:10::/64
978 - Delete 2001:10::20/64 from interface
979 - Verify no route in FIB for prefix 2001:10::/64
982 addr1 = "2001:10::10"
983 addr2 = "2001:10::20"
985 if_addr1 = VppIpInterfaceAddress(self, self.pg0,
986 VppIpAddress(addr1), 64)
987 if_addr2 = VppIpInterfaceAddress(self, self.pg0,
988 VppIpAddress(addr2), 64)
989 self.assertFalse(if_addr1.query_vpp_config()) # 2001:10::/64
990 self.assertFalse(find_route(self, addr1, 128))
991 self.assertFalse(find_route(self, addr2, 128))
993 # configure first address, verify route present
994 if_addr1.add_vpp_config()
995 self.assertTrue(if_addr1.query_vpp_config()) # 2001:10::/64
996 self.assertTrue(find_route(self, addr1, 128))
997 self.assertFalse(find_route(self, addr2, 128))
999 # configure second address, delete first, verify route not removed
1000 if_addr2.add_vpp_config()
1001 if_addr1.remove_vpp_config()
1002 self.assertTrue(if_addr1.query_vpp_config()) # 2001:10::/64
1003 self.assertFalse(find_route(self, addr1, 128))
1004 self.assertTrue(find_route(self, addr2, 128))
1006 # delete second address, verify route removed
1007 if_addr2.remove_vpp_config()
1008 self.assertFalse(if_addr1.query_vpp_config()) # 2001:10::/64
1009 self.assertFalse(find_route(self, addr1, 128))
1010 self.assertFalse(find_route(self, addr2, 128))
1013 class TestICMPv6Echo(VppTestCase):
1014 """ ICMPv6 Echo Test Case """
1017 def setUpClass(cls):
1018 super(TestICMPv6Echo, cls).setUpClass()
1021 def tearDownClass(cls):
1022 super(TestICMPv6Echo, cls).tearDownClass()
1025 super(TestICMPv6Echo, self).setUp()
1027 # create 1 pg interface
1028 self.create_pg_interfaces(range(1))
1030 for i in self.pg_interfaces:
1036 super(TestICMPv6Echo, self).tearDown()
1037 for i in self.pg_interfaces:
1042 def test_icmpv6_echo(self):
1043 """ VPP replies to ICMPv6 Echo Request
1047 - Receive ICMPv6 Echo Request message on pg0 interface.
1048 - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
1053 icmpv6_data = b'\x0a' * 18
1054 p_echo_request = (Ether(src=self.pg0.remote_mac,
1055 dst=self.pg0.local_mac) /
1056 IPv6(src=self.pg0.remote_ip6,
1057 dst=self.pg0.local_ip6) /
1063 self.pg0.add_stream(p_echo_request)
1064 self.pg_enable_capture(self.pg_interfaces)
1067 rx = self.pg0.get_capture(1)
1071 icmpv6 = rx[ICMPv6EchoReply]
1073 self.assertEqual(ether.src, self.pg0.local_mac)
1074 self.assertEqual(ether.dst, self.pg0.remote_mac)
1076 self.assertEqual(ipv6.src, self.pg0.local_ip6)
1077 self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1080 icmp6types[icmpv6.type], "Echo Reply")
1081 self.assertEqual(icmpv6.id, icmpv6_id)
1082 self.assertEqual(icmpv6.seq, icmpv6_seq)
1083 self.assertEqual(icmpv6.data, icmpv6_data)
1086 class TestIPv6RD(TestIPv6ND):
1087 """ IPv6 Router Discovery Test Case """
1090 def setUpClass(cls):
1091 super(TestIPv6RD, cls).setUpClass()
1094 def tearDownClass(cls):
1095 super(TestIPv6RD, cls).tearDownClass()
1098 super(TestIPv6RD, self).setUp()
1100 # create 2 pg interfaces
1101 self.create_pg_interfaces(range(2))
1103 self.interfaces = list(self.pg_interfaces)
1105 # setup all interfaces
1106 for i in self.interfaces:
1111 for i in self.interfaces:
1114 super(TestIPv6RD, self).tearDown()
1116 def test_rd_send_router_solicitation(self):
1117 """ Verify router solicitation packets """
1120 self.pg_enable_capture(self.pg_interfaces)
1122 self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1124 rx_list = self.pg1.get_capture(count, timeout=3)
1125 self.assertEqual(len(rx_list), count)
1126 for packet in rx_list:
1127 self.assertEqual(packet.haslayer(IPv6), 1)
1128 self.assertEqual(packet[IPv6].haslayer(
1130 dst = ip6_normalize(packet[IPv6].dst)
1131 dst2 = ip6_normalize("ff02::2")
1132 self.assert_equal(dst, dst2)
1133 src = ip6_normalize(packet[IPv6].src)
1134 src2 = ip6_normalize(self.pg1.local_ip6_ll)
1135 self.assert_equal(src, src2)
1137 bool(packet[ICMPv6ND_RS].haslayer(
1138 ICMPv6NDOptSrcLLAddr)))
1140 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1143 def verify_prefix_info(self, reported_prefix, prefix_option):
1144 prefix = IPv6Network(
1145 text_type(prefix_option.getfieldval("prefix") +
1147 text_type(prefix_option.getfieldval("prefixlen"))),
1149 self.assert_equal(reported_prefix.prefix.network_address,
1150 prefix.network_address)
1151 L = prefix_option.getfieldval("L")
1152 A = prefix_option.getfieldval("A")
1153 option_flags = (L << 7) | (A << 6)
1154 self.assert_equal(reported_prefix.flags, option_flags)
1155 self.assert_equal(reported_prefix.valid_time,
1156 prefix_option.getfieldval("validlifetime"))
1157 self.assert_equal(reported_prefix.preferred_time,
1158 prefix_option.getfieldval("preferredlifetime"))
1160 def test_rd_receive_router_advertisement(self):
1161 """ Verify events triggered by received RA packets """
1163 self.vapi.want_ip6_ra_events()
1165 prefix_info_1 = ICMPv6NDOptPrefixInfo(
1169 preferredlifetime=500,
1174 prefix_info_2 = ICMPv6NDOptPrefixInfo(
1178 preferredlifetime=1000,
1183 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1184 IPv6(dst=self.pg1.local_ip6_ll,
1185 src=mk_ll_addr(self.pg1.remote_mac)) /
1189 self.pg1.add_stream([p])
1192 ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1194 self.assert_equal(ev.current_hop_limit, 0)
1195 self.assert_equal(ev.flags, 8)
1196 self.assert_equal(ev.router_lifetime_in_sec, 1800)
1197 self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1199 ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1201 self.assert_equal(ev.n_prefixes, 2)
1203 self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1204 self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1207 class TestIPv6RDControlPlane(TestIPv6ND):
1208 """ IPv6 Router Discovery Control Plane Test Case """
1211 def setUpClass(cls):
1212 super(TestIPv6RDControlPlane, cls).setUpClass()
1215 def tearDownClass(cls):
1216 super(TestIPv6RDControlPlane, cls).tearDownClass()
1219 super(TestIPv6RDControlPlane, self).setUp()
1221 # create 1 pg interface
1222 self.create_pg_interfaces(range(1))
1224 self.interfaces = list(self.pg_interfaces)
1226 # setup all interfaces
1227 for i in self.interfaces:
1232 super(TestIPv6RDControlPlane, self).tearDown()
1235 def create_ra_packet(pg, routerlifetime=None):
1236 src_ip = pg.remote_ip6_ll
1237 dst_ip = pg.local_ip6
1238 if routerlifetime is not None:
1239 ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1242 p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1243 IPv6(dst=dst_ip, src=src_ip) / ra)
1247 def get_default_routes(fib):
1250 if entry.route.prefix.prefixlen == 0:
1251 for path in entry.route.paths:
1252 if path.sw_if_index != 0xFFFFFFFF:
1254 defaut_route['sw_if_index'] = path.sw_if_index
1255 defaut_route['next_hop'] = path.nh.address.ip6
1256 list.append(defaut_route)
1260 def get_interface_addresses(fib, pg):
1263 if entry.route.prefix.prefixlen == 128:
1264 path = entry.route.paths[0]
1265 if path.sw_if_index == pg.sw_if_index:
1266 list.append(str(entry.route.prefix.network_address))
1270 """ Test handling of SLAAC addresses and default routes """
1272 fib = self.vapi.ip_route_dump(0, True)
1273 default_routes = self.get_default_routes(fib)
1274 initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1275 self.assertEqual(default_routes, [])
1276 router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll))
1278 self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1283 packet = (self.create_ra_packet(
1284 self.pg0) / ICMPv6NDOptPrefixInfo(
1288 preferredlifetime=2,
1291 ) / ICMPv6NDOptPrefixInfo(
1295 preferredlifetime=1000,
1299 self.pg0.add_stream([packet])
1304 fib = self.vapi.ip_route_dump(0, True)
1306 # check FIB for new address
1307 addresses = set(self.get_interface_addresses(fib, self.pg0))
1308 new_addresses = addresses.difference(initial_addresses)
1309 self.assertEqual(len(new_addresses), 1)
1310 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1312 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1314 # check FIB for new default route
1315 default_routes = self.get_default_routes(fib)
1316 self.assertEqual(len(default_routes), 1)
1317 dr = default_routes[0]
1318 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1319 self.assertEqual(dr['next_hop'], router_address)
1321 # send RA to delete default route
1322 packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1323 self.pg0.add_stream([packet])
1328 # check that default route is deleted
1329 fib = self.vapi.ip_route_dump(0, True)
1330 default_routes = self.get_default_routes(fib)
1331 self.assertEqual(len(default_routes), 0)
1336 packet = self.create_ra_packet(self.pg0)
1337 self.pg0.add_stream([packet])
1342 # check FIB for new default route
1343 fib = self.vapi.ip_route_dump(0, True)
1344 default_routes = self.get_default_routes(fib)
1345 self.assertEqual(len(default_routes), 1)
1346 dr = default_routes[0]
1347 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1348 self.assertEqual(dr['next_hop'], router_address)
1350 # send RA, updating router lifetime to 1s
1351 packet = self.create_ra_packet(self.pg0, 1)
1352 self.pg0.add_stream([packet])
1357 # check that default route still exists
1358 fib = self.vapi.ip_route_dump(0, True)
1359 default_routes = self.get_default_routes(fib)
1360 self.assertEqual(len(default_routes), 1)
1361 dr = default_routes[0]
1362 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1363 self.assertEqual(dr['next_hop'], router_address)
1367 # check that default route is deleted
1368 fib = self.vapi.ip_route_dump(0, True)
1369 default_routes = self.get_default_routes(fib)
1370 self.assertEqual(len(default_routes), 0)
1372 # check FIB still contains the SLAAC address
1373 addresses = set(self.get_interface_addresses(fib, self.pg0))
1374 new_addresses = addresses.difference(initial_addresses)
1376 self.assertEqual(len(new_addresses), 1)
1377 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1379 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1383 # check that SLAAC address is deleted
1384 fib = self.vapi.ip_route_dump(0, True)
1385 addresses = set(self.get_interface_addresses(fib, self.pg0))
1386 new_addresses = addresses.difference(initial_addresses)
1387 self.assertEqual(len(new_addresses), 0)
1390 class IPv6NDProxyTest(TestIPv6ND):
1391 """ IPv6 ND ProxyTest Case """
1394 def setUpClass(cls):
1395 super(IPv6NDProxyTest, cls).setUpClass()
1398 def tearDownClass(cls):
1399 super(IPv6NDProxyTest, cls).tearDownClass()
1402 super(IPv6NDProxyTest, self).setUp()
1404 # create 3 pg interfaces
1405 self.create_pg_interfaces(range(3))
1407 # pg0 is the master interface, with the configured subnet
1409 self.pg0.config_ip6()
1410 self.pg0.resolve_ndp()
1412 self.pg1.ip6_enable()
1413 self.pg2.ip6_enable()
1416 super(IPv6NDProxyTest, self).tearDown()
1418 def test_nd_proxy(self):
1419 """ IPv6 Proxy ND """
1422 # Generate some hosts in the subnet that we are proxying
1424 self.pg0.generate_remote_hosts(8)
1426 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1427 d = inet_ntop(AF_INET6, nsma)
1430 # Send an NS for one of those remote hosts on one of the proxy links
1431 # expect no response since it's from an address that is not
1432 # on the link that has the prefix configured
1434 ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1436 src=self.pg0._remote_hosts[2].ip6) /
1437 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1438 ICMPv6NDOptSrcLLAddr(
1439 lladdr=self.pg0._remote_hosts[2].mac))
1441 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1444 # Add proxy support for the host
1446 self.vapi.ip6nd_proxy_add_del(
1447 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1448 sw_if_index=self.pg1.sw_if_index)
1451 # try that NS again. this time we expect an NA back
1453 self.send_and_expect_na(self.pg1, ns_pg1,
1454 "NS to proxy entry",
1455 dst_ip=self.pg0._remote_hosts[2].ip6,
1456 tgt_ip=self.pg0.local_ip6)
1459 # ... and that we have an entry in the ND cache
1461 self.assertTrue(find_nbr(self,
1462 self.pg1.sw_if_index,
1463 self.pg0._remote_hosts[2].ip6))
1466 # ... and we can route traffic to it
1468 t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1469 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1470 src=self.pg0.remote_ip6) /
1471 inet6.UDP(sport=10000, dport=20000) /
1474 self.pg0.add_stream(t)
1475 self.pg_enable_capture(self.pg_interfaces)
1477 rx = self.pg1.get_capture(1)
1480 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1481 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1483 self.assertEqual(rx[IPv6].src,
1485 self.assertEqual(rx[IPv6].dst,
1489 # Test we proxy for the host on the main interface
1491 ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1492 IPv6(dst=d, src=self.pg0.remote_ip6) /
1494 tgt=self.pg0._remote_hosts[2].ip6) /
1495 ICMPv6NDOptSrcLLAddr(
1496 lladdr=self.pg0.remote_mac))
1498 self.send_and_expect_na(self.pg0, ns_pg0,
1499 "NS to proxy entry on main",
1500 tgt_ip=self.pg0._remote_hosts[2].ip6,
1501 dst_ip=self.pg0.remote_ip6)
1504 # Setup and resolve proxy for another host on another interface
1506 ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1508 src=self.pg0._remote_hosts[3].ip6) /
1509 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1510 ICMPv6NDOptSrcLLAddr(
1511 lladdr=self.pg0._remote_hosts[2].mac))
1513 self.vapi.ip6nd_proxy_add_del(
1514 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1515 sw_if_index=self.pg2.sw_if_index)
1517 self.send_and_expect_na(self.pg2, ns_pg2,
1518 "NS to proxy entry other interface",
1519 dst_ip=self.pg0._remote_hosts[3].ip6,
1520 tgt_ip=self.pg0.local_ip6)
1522 self.assertTrue(find_nbr(self,
1523 self.pg2.sw_if_index,
1524 self.pg0._remote_hosts[3].ip6))
1527 # hosts can communicate. pg2->pg1
1529 t2 = (Ether(dst=self.pg2.local_mac,
1530 src=self.pg0.remote_hosts[3].mac) /
1531 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1532 src=self.pg0._remote_hosts[3].ip6) /
1533 inet6.UDP(sport=10000, dport=20000) /
1536 self.pg2.add_stream(t2)
1537 self.pg_enable_capture(self.pg_interfaces)
1539 rx = self.pg1.get_capture(1)
1542 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1543 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1545 self.assertEqual(rx[IPv6].src,
1547 self.assertEqual(rx[IPv6].dst,
1551 # remove the proxy configs
1553 self.vapi.ip6nd_proxy_add_del(
1554 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1555 sw_if_index=self.pg1.sw_if_index, is_del=1)
1556 self.vapi.ip6nd_proxy_add_del(
1557 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1558 sw_if_index=self.pg2.sw_if_index, is_del=1)
1560 self.assertFalse(find_nbr(self,
1561 self.pg2.sw_if_index,
1562 self.pg0._remote_hosts[3].ip6))
1563 self.assertFalse(find_nbr(self,
1564 self.pg1.sw_if_index,
1565 self.pg0._remote_hosts[2].ip6))
1568 # no longer proxy-ing...
1570 self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1571 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1572 self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1575 # no longer forwarding. traffic generates NS out of the glean/main
1578 self.pg2.add_stream(t2)
1579 self.pg_enable_capture(self.pg_interfaces)
1582 rx = self.pg0.get_capture(1)
1584 self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1587 class TestIPNull(VppTestCase):
1588 """ IPv6 routes via NULL """
1591 def setUpClass(cls):
1592 super(TestIPNull, cls).setUpClass()
1595 def tearDownClass(cls):
1596 super(TestIPNull, cls).tearDownClass()
1599 super(TestIPNull, self).setUp()
1601 # create 2 pg interfaces
1602 self.create_pg_interfaces(range(1))
1604 for i in self.pg_interfaces:
1610 super(TestIPNull, self).tearDown()
1611 for i in self.pg_interfaces:
1615 def test_ip_null(self):
1616 """ IP NULL route """
1618 p = (Ether(src=self.pg0.remote_mac,
1619 dst=self.pg0.local_mac) /
1620 IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1621 inet6.UDP(sport=1234, dport=1234) /
1625 # A route via IP NULL that will reply with ICMP unreachables
1627 ip_unreach = VppIpRoute(
1629 [VppRoutePath("::", 0xffffffff,
1630 type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)])
1631 ip_unreach.add_vpp_config()
1633 self.pg0.add_stream(p)
1634 self.pg_enable_capture(self.pg_interfaces)
1637 rx = self.pg0.get_capture(1)
1639 icmp = rx[ICMPv6DestUnreach]
1641 # 0 = "No route to destination"
1642 self.assertEqual(icmp.code, 0)
1644 # ICMP is rate limited. pause a bit
1648 # A route via IP NULL that will reply with ICMP prohibited
1650 ip_prohibit = VppIpRoute(
1651 self, "2001::1", 128,
1652 [VppRoutePath("::", 0xffffffff,
1653 type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)])
1654 ip_prohibit.add_vpp_config()
1656 self.pg0.add_stream(p)
1657 self.pg_enable_capture(self.pg_interfaces)
1660 rx = self.pg0.get_capture(1)
1662 icmp = rx[ICMPv6DestUnreach]
1664 # 1 = "Communication with destination administratively prohibited"
1665 self.assertEqual(icmp.code, 1)
1668 class TestIPDisabled(VppTestCase):
1669 """ IPv6 disabled """
1672 def setUpClass(cls):
1673 super(TestIPDisabled, cls).setUpClass()
1676 def tearDownClass(cls):
1677 super(TestIPDisabled, cls).tearDownClass()
1680 super(TestIPDisabled, self).setUp()
1682 # create 2 pg interfaces
1683 self.create_pg_interfaces(range(2))
1687 self.pg0.config_ip6()
1688 self.pg0.resolve_ndp()
1690 # PG 1 is not IP enabled
1694 super(TestIPDisabled, self).tearDown()
1695 for i in self.pg_interfaces:
1699 def test_ip_disabled(self):
1704 # one accepting interface, pg0, 2 forwarding interfaces
1706 route_ff_01 = VppIpMRoute(
1710 MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
1711 [VppMRoutePath(self.pg1.sw_if_index,
1712 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
1713 VppMRoutePath(self.pg0.sw_if_index,
1714 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
1715 route_ff_01.add_vpp_config()
1717 pu = (Ether(src=self.pg1.remote_mac,
1718 dst=self.pg1.local_mac) /
1719 IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1720 inet6.UDP(sport=1234, dport=1234) /
1722 pm = (Ether(src=self.pg1.remote_mac,
1723 dst=self.pg1.local_mac) /
1724 IPv6(src="2001::1", dst="ffef::1") /
1725 inet6.UDP(sport=1234, dport=1234) /
1729 # PG1 does not forward IP traffic
1731 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1732 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1737 self.pg1.config_ip6()
1740 # Now we get packets through
1742 self.pg1.add_stream(pu)
1743 self.pg_enable_capture(self.pg_interfaces)
1745 rx = self.pg0.get_capture(1)
1747 self.pg1.add_stream(pm)
1748 self.pg_enable_capture(self.pg_interfaces)
1750 rx = self.pg0.get_capture(1)
1755 self.pg1.unconfig_ip6()
1758 # PG1 does not forward IP traffic
1760 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1761 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1764 class TestIP6LoadBalance(VppTestCase):
1765 """ IPv6 Load-Balancing """
1768 def setUpClass(cls):
1769 super(TestIP6LoadBalance, cls).setUpClass()
1772 def tearDownClass(cls):
1773 super(TestIP6LoadBalance, cls).tearDownClass()
1776 super(TestIP6LoadBalance, self).setUp()
1778 self.create_pg_interfaces(range(5))
1780 mpls_tbl = VppMplsTable(self, 0)
1781 mpls_tbl.add_vpp_config()
1783 for i in self.pg_interfaces:
1790 for i in self.pg_interfaces:
1794 super(TestIP6LoadBalance, self).tearDown()
1796 def pg_send(self, input, pkts):
1797 self.vapi.cli("clear trace")
1798 input.add_stream(pkts)
1799 self.pg_enable_capture(self.pg_interfaces)
1802 def send_and_expect_load_balancing(self, input, pkts, outputs):
1803 self.pg_send(input, pkts)
1805 rx = oo._get_capture(1)
1806 self.assertNotEqual(0, len(rx))
1808 def send_and_expect_one_itf(self, input, pkts, itf):
1809 self.pg_send(input, pkts)
1810 rx = itf.get_capture(len(pkts))
1812 def test_ip6_load_balance(self):
1813 """ IPv6 Load-Balancing """
1816 # An array of packets that differ only in the destination port
1820 # - MPLS non-EOS with an entropy label
1824 port_mpls_neos_pkts = []
1828 # An array of packets that differ only in the source address
1833 for ii in range(NUM_PKTS):
1835 IPv6(dst="3000::1", src="3000:1::1") /
1836 inet6.UDP(sport=1234, dport=1234 + ii) /
1838 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1839 dst=self.pg0.local_mac) /
1841 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1842 dst=self.pg0.local_mac) /
1843 MPLS(label=66, ttl=2) /
1845 port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1846 dst=self.pg0.local_mac) /
1847 MPLS(label=67, ttl=2) /
1848 MPLS(label=77, ttl=2) /
1850 port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1851 dst=self.pg0.local_mac) /
1852 MPLS(label=67, ttl=2) /
1853 MPLS(label=14, ttl=2) /
1854 MPLS(label=999, ttl=2) /
1857 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
1858 inet6.UDP(sport=1234, dport=1234) /
1860 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1861 dst=self.pg0.local_mac) /
1863 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1864 dst=self.pg0.local_mac) /
1865 MPLS(label=66, ttl=2) /
1869 # A route for the IP packets
1871 route_3000_1 = VppIpRoute(self, "3000::1", 128,
1872 [VppRoutePath(self.pg1.remote_ip6,
1873 self.pg1.sw_if_index),
1874 VppRoutePath(self.pg2.remote_ip6,
1875 self.pg2.sw_if_index)])
1876 route_3000_1.add_vpp_config()
1879 # a local-label for the EOS packets
1881 binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
1882 binding.add_vpp_config()
1885 # An MPLS route for the non-EOS packets
1887 route_67 = VppMplsRoute(self, 67, 0,
1888 [VppRoutePath(self.pg1.remote_ip6,
1889 self.pg1.sw_if_index,
1891 VppRoutePath(self.pg2.remote_ip6,
1892 self.pg2.sw_if_index,
1894 route_67.add_vpp_config()
1897 # inject the packet on pg0 - expect load-balancing across the 2 paths
1898 # - since the default hash config is to use IP src,dst and port
1900 # We are not going to ensure equal amounts of packets across each link,
1901 # since the hash algorithm is statistical and therefore this can never
1902 # be guaranteed. But with 64 different packets we do expect some
1903 # balancing. So instead just ensure there is traffic on each link.
1905 self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
1906 [self.pg1, self.pg2])
1907 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1908 [self.pg1, self.pg2])
1909 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
1910 [self.pg1, self.pg2])
1911 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1912 [self.pg1, self.pg2])
1913 self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
1914 [self.pg1, self.pg2])
1917 # The packets with Entropy label in should not load-balance,
1918 # since the Entropy value is fixed.
1920 self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
1923 # change the flow hash config so it's only IP src,dst
1924 # - now only the stream with differing source address will
1927 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=0, dport=0,
1930 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1931 [self.pg1, self.pg2])
1932 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1933 [self.pg1, self.pg2])
1934 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
1937 # change the flow hash config back to defaults
1939 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1,
1943 # Recursive prefixes
1944 # - testing that 2 stages of load-balancing occurs and there is no
1945 # polarisation (i.e. only 2 of 4 paths are used)
1950 for ii in range(257):
1951 port_pkts.append((Ether(src=self.pg0.remote_mac,
1952 dst=self.pg0.local_mac) /
1955 inet6.UDP(sport=1234,
1958 src_pkts.append((Ether(src=self.pg0.remote_mac,
1959 dst=self.pg0.local_mac) /
1961 src="4000:1::%d" % ii) /
1962 inet6.UDP(sport=1234, dport=1234) /
1965 route_3000_2 = VppIpRoute(self, "3000::2", 128,
1966 [VppRoutePath(self.pg3.remote_ip6,
1967 self.pg3.sw_if_index),
1968 VppRoutePath(self.pg4.remote_ip6,
1969 self.pg4.sw_if_index)])
1970 route_3000_2.add_vpp_config()
1972 route_4000_1 = VppIpRoute(self, "4000::1", 128,
1973 [VppRoutePath("3000::1",
1975 VppRoutePath("3000::2",
1977 route_4000_1.add_vpp_config()
1980 # inject the packet on pg0 - expect load-balancing across all 4 paths
1982 self.vapi.cli("clear trace")
1983 self.send_and_expect_load_balancing(self.pg0, port_pkts,
1984 [self.pg1, self.pg2,
1985 self.pg3, self.pg4])
1986 self.send_and_expect_load_balancing(self.pg0, src_pkts,
1987 [self.pg1, self.pg2,
1988 self.pg3, self.pg4])
1991 # Recursive prefixes
1992 # - testing that 2 stages of load-balancing no choices
1996 for ii in range(257):
1997 port_pkts.append((Ether(src=self.pg0.remote_mac,
1998 dst=self.pg0.local_mac) /
2001 inet6.UDP(sport=1234,
2005 route_5000_2 = VppIpRoute(self, "5000::2", 128,
2006 [VppRoutePath(self.pg3.remote_ip6,
2007 self.pg3.sw_if_index)])
2008 route_5000_2.add_vpp_config()
2010 route_6000_1 = VppIpRoute(self, "6000::1", 128,
2011 [VppRoutePath("5000::2",
2013 route_6000_1.add_vpp_config()
2016 # inject the packet on pg0 - expect load-balancing across all 4 paths
2018 self.vapi.cli("clear trace")
2019 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
2022 class TestIP6Punt(VppTestCase):
2023 """ IPv6 Punt Police/Redirect """
2026 def setUpClass(cls):
2027 super(TestIP6Punt, cls).setUpClass()
2030 def tearDownClass(cls):
2031 super(TestIP6Punt, cls).tearDownClass()
2034 super(TestIP6Punt, self).setUp()
2036 self.create_pg_interfaces(range(4))
2038 for i in self.pg_interfaces:
2044 super(TestIP6Punt, self).tearDown()
2045 for i in self.pg_interfaces:
2049 def test_ip_punt(self):
2050 """ IP6 punt police and redirect """
2052 p = (Ether(src=self.pg0.remote_mac,
2053 dst=self.pg0.local_mac) /
2054 IPv6(src=self.pg0.remote_ip6,
2055 dst=self.pg0.local_ip6) /
2056 inet6.TCP(sport=1234, dport=1234) /
2062 # Configure a punt redirect via pg1.
2064 nh_addr = self.pg1.remote_ip6
2065 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2066 self.pg1.sw_if_index,
2069 self.send_and_expect(self.pg0, pkts, self.pg1)
2074 policer = self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0,
2076 self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
2078 self.vapi.cli("clear trace")
2079 self.pg0.add_stream(pkts)
2080 self.pg_enable_capture(self.pg_interfaces)
2084 # the number of packet received should be greater than 0,
2085 # but not equal to the number sent, since some were policed
2087 rx = self.pg1._get_capture(1)
2088 self.assertGreater(len(rx), 0)
2089 self.assertLess(len(rx), len(pkts))
2092 # remove the policer. back to full rx
2094 self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
2095 self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0,
2096 rate_type=1, is_add=0)
2097 self.send_and_expect(self.pg0, pkts, self.pg1)
2100 # remove the redirect. expect full drop.
2102 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2103 self.pg1.sw_if_index,
2106 self.send_and_assert_no_replies(self.pg0, pkts,
2107 "IP no punt config")
2110 # Add a redirect that is not input port selective
2112 self.vapi.ip_punt_redirect(0xffffffff,
2113 self.pg1.sw_if_index,
2115 self.send_and_expect(self.pg0, pkts, self.pg1)
2117 self.vapi.ip_punt_redirect(0xffffffff,
2118 self.pg1.sw_if_index,
2122 def test_ip_punt_dump(self):
2123 """ IP6 punt redirect dump"""
2126 # Configure a punt redirects
2128 nh_addr = self.pg3.remote_ip6
2129 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2130 self.pg3.sw_if_index,
2132 self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
2133 self.pg3.sw_if_index,
2135 self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
2136 self.pg3.sw_if_index,
2140 # Dump pg0 punt redirects
2142 punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index,
2145 self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
2148 # Dump punt redirects for all interfaces
2150 punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2151 self.assertEqual(len(punts), 3)
2153 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2154 self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2155 self.assertEqual(str(punts[2].punt.nh), '::')
2158 class TestIPDeag(VppTestCase):
2159 """ IPv6 Deaggregate Routes """
2162 def setUpClass(cls):
2163 super(TestIPDeag, cls).setUpClass()
2166 def tearDownClass(cls):
2167 super(TestIPDeag, cls).tearDownClass()
2170 super(TestIPDeag, self).setUp()
2172 self.create_pg_interfaces(range(3))
2174 for i in self.pg_interfaces:
2180 super(TestIPDeag, self).tearDown()
2181 for i in self.pg_interfaces:
2185 def test_ip_deag(self):
2186 """ IP Deag Routes """
2189 # Create a table to be used for:
2190 # 1 - another destination address lookup
2191 # 2 - a source address lookup
2193 table_dst = VppIpTable(self, 1, is_ip6=1)
2194 table_src = VppIpTable(self, 2, is_ip6=1)
2195 table_dst.add_vpp_config()
2196 table_src.add_vpp_config()
2199 # Add a route in the default table to point to a deag/
2200 # second lookup in each of these tables
2202 route_to_dst = VppIpRoute(self, "1::1", 128,
2206 route_to_src = VppIpRoute(
2211 type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)])
2213 route_to_dst.add_vpp_config()
2214 route_to_src.add_vpp_config()
2217 # packets to these destination are dropped, since they'll
2218 # hit the respective default routes in the second table
2220 p_dst = (Ether(src=self.pg0.remote_mac,
2221 dst=self.pg0.local_mac) /
2222 IPv6(src="5::5", dst="1::1") /
2223 inet6.TCP(sport=1234, dport=1234) /
2225 p_src = (Ether(src=self.pg0.remote_mac,
2226 dst=self.pg0.local_mac) /
2227 IPv6(src="2::2", dst="1::2") /
2228 inet6.TCP(sport=1234, dport=1234) /
2230 pkts_dst = p_dst * 257
2231 pkts_src = p_src * 257
2233 self.send_and_assert_no_replies(self.pg0, pkts_dst,
2235 self.send_and_assert_no_replies(self.pg0, pkts_src,
2239 # add a route in the dst table to forward via pg1
2241 route_in_dst = VppIpRoute(self, "1::1", 128,
2242 [VppRoutePath(self.pg1.remote_ip6,
2243 self.pg1.sw_if_index)],
2245 route_in_dst.add_vpp_config()
2247 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2250 # add a route in the src table to forward via pg2
2252 route_in_src = VppIpRoute(self, "2::2", 128,
2253 [VppRoutePath(self.pg2.remote_ip6,
2254 self.pg2.sw_if_index)],
2256 route_in_src.add_vpp_config()
2257 self.send_and_expect(self.pg0, pkts_src, self.pg2)
2260 # loop in the lookup DP
2262 route_loop = VppIpRoute(self, "3::3", 128,
2265 route_loop.add_vpp_config()
2267 p_l = (Ether(src=self.pg0.remote_mac,
2268 dst=self.pg0.local_mac) /
2269 IPv6(src="3::4", dst="3::3") /
2270 inet6.TCP(sport=1234, dport=1234) /
2273 self.send_and_assert_no_replies(self.pg0, p_l * 257,
2277 class TestIP6Input(VppTestCase):
2278 """ IPv6 Input Exception Test Cases """
2281 def setUpClass(cls):
2282 super(TestIP6Input, cls).setUpClass()
2285 def tearDownClass(cls):
2286 super(TestIP6Input, cls).tearDownClass()
2289 super(TestIP6Input, self).setUp()
2291 self.create_pg_interfaces(range(2))
2293 for i in self.pg_interfaces:
2299 super(TestIP6Input, self).tearDown()
2300 for i in self.pg_interfaces:
2304 def test_ip_input_icmp_reply(self):
2305 """ IP6 Input Exception - Return ICMP (3,0) """
2307 # hop limit - ICMP replies
2309 p_version = (Ether(src=self.pg0.remote_mac,
2310 dst=self.pg0.local_mac) /
2311 IPv6(src=self.pg0.remote_ip6,
2312 dst=self.pg1.remote_ip6,
2314 inet6.UDP(sport=1234, dport=1234) /
2317 rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0)
2319 icmp = rx[ICMPv6TimeExceeded]
2321 # 0: "hop limit exceeded in transit",
2322 self.assertEqual((icmp.type, icmp.code), (3, 0))
2324 icmpv6_data = '\x0a' * 18
2326 all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2328 @parameterized.expand([
2329 # Name, src, dst, l4proto, msg, timeout
2330 ("src='iface', dst='iface'", None, None,
2331 inet6.UDP(sport=1234, dport=1234), "funky version", None),
2332 ("src='All 0's', dst='iface'", all_0s, None,
2333 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2334 ("src='iface', dst='All 0's'", None, all_0s,
2335 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2336 ("src='All 1's', dst='iface'", all_1s, None,
2337 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2338 ("src='iface', dst='All 1's'", None, all_1s,
2339 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2340 ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2341 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2344 def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2346 self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2348 p_version = (Ether(src=self.pg0.remote_mac,
2349 dst=self.pg0.local_mac) /
2350 IPv6(src=src or self.pg0.remote_ip6,
2351 dst=dst or self.pg1.remote_ip6,
2356 self.send_and_assert_no_replies(self.pg0, p_version * NUM_PKTS,
2360 def test_hop_by_hop(self):
2361 """ Hop-by-hop header test """
2363 p = (Ether(src=self.pg0.remote_mac,
2364 dst=self.pg0.local_mac) /
2365 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
2366 IPv6ExtHdrHopByHop() /
2367 inet6.UDP(sport=1234, dport=1234) /
2370 self.pg0.add_stream(p)
2371 self.pg_enable_capture(self.pg_interfaces)
2374 if __name__ == '__main__':
2375 unittest.main(testRunner=VppTestRunner)