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
24 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
25 VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
26 VppMplsRoute, VppMplsTable, VppIpTable, FibPathType
27 from vpp_neighbor import find_nbr, VppNeighbor
28 from vpp_pg_interface import is_ipv6_misc
29 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
30 from ipaddress import IPv6Network, IPv4Network, IPv6Address
32 AF_INET6 = socket.AF_INET6
42 class TestIPv6ND(VppTestCase):
43 def validate_ra(self, intf, rx, dst_ip=None):
45 dst_ip = intf.remote_ip6
47 # unicasted packets must come to the unicast mac
48 self.assertEqual(rx[Ether].dst, intf.remote_mac)
50 # and from the router's MAC
51 self.assertEqual(rx[Ether].src, intf.local_mac)
53 # the rx'd RA should be addressed to the sender's source
54 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
55 self.assertEqual(in6_ptop(rx[IPv6].dst),
58 # and come from the router's link local
59 self.assertTrue(in6_islladdr(rx[IPv6].src))
60 self.assertEqual(in6_ptop(rx[IPv6].src),
61 in6_ptop(mk_ll_addr(intf.local_mac)))
63 def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
65 dst_ip = intf.remote_ip6
67 dst_ip = intf.local_ip6
69 # unicasted packets must come to the unicast mac
70 self.assertEqual(rx[Ether].dst, intf.remote_mac)
72 # and from the router's MAC
73 self.assertEqual(rx[Ether].src, intf.local_mac)
75 # the rx'd NA should be addressed to the sender's source
76 self.assertTrue(rx.haslayer(ICMPv6ND_NA))
77 self.assertEqual(in6_ptop(rx[IPv6].dst),
80 # and come from the target address
82 in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
84 # Dest link-layer options should have the router's MAC
85 dll = rx[ICMPv6NDOptDstLLAddr]
86 self.assertEqual(dll.lladdr, intf.local_mac)
88 def validate_ns(self, intf, rx, tgt_ip):
89 nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
90 dst_ip = inet_ntop(AF_INET6, nsma)
93 self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
95 # and from the router's MAC
96 self.assertEqual(rx[Ether].src, intf.local_mac)
98 # the rx'd NS should be addressed to an mcast address
99 # derived from the target address
101 in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
103 # expect the tgt IP in the NS header
105 self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
107 # packet is from the router's local address
109 in6_ptop(rx[IPv6].src), intf.local_ip6)
111 # Src link-layer options should have the router's MAC
112 sll = rx[ICMPv6NDOptSrcLLAddr]
113 self.assertEqual(sll.lladdr, intf.local_mac)
115 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
116 filter_out_fn=is_ipv6_misc):
117 intf.add_stream(pkts)
118 self.pg_enable_capture(self.pg_interfaces)
120 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
122 self.assertEqual(len(rx), 1)
124 self.validate_ra(intf, rx, dst_ip)
126 def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
128 filter_out_fn=is_ipv6_misc):
129 intf.add_stream(pkts)
130 self.pg_enable_capture(self.pg_interfaces)
132 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
134 self.assertEqual(len(rx), 1)
136 self.validate_na(intf, rx, dst_ip, tgt_ip)
138 def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
139 filter_out_fn=is_ipv6_misc):
140 tx_intf.add_stream(pkts)
141 self.pg_enable_capture(self.pg_interfaces)
143 rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
145 self.assertEqual(len(rx), 1)
147 self.validate_ns(rx_intf, rx, tgt_ip)
149 def verify_ip(self, rx, smac, dmac, sip, dip):
151 self.assertEqual(ether.dst, dmac)
152 self.assertEqual(ether.src, smac)
155 self.assertEqual(ip.src, sip)
156 self.assertEqual(ip.dst, dip)
159 class TestIPv6(TestIPv6ND):
160 """ IPv6 Test Case """
164 super(TestIPv6, cls).setUpClass()
167 def tearDownClass(cls):
168 super(TestIPv6, cls).tearDownClass()
172 Perform test setup before test case.
175 - create 3 pg interfaces
176 - untagged pg0 interface
177 - Dot1Q subinterface on pg1
178 - Dot1AD subinterface on pg2
180 - put it into UP state
182 - resolve neighbor address using NDP
183 - configure 200 fib entries
185 :ivar list interfaces: pg interfaces and subinterfaces.
186 :ivar dict flows: IPv4 packet flows in test.
188 *TODO:* Create AD sub interface
190 super(TestIPv6, self).setUp()
192 # create 3 pg interfaces
193 self.create_pg_interfaces(range(3))
195 # create 2 subinterfaces for p1 and pg2
196 self.sub_interfaces = [
197 VppDot1QSubint(self, self.pg1, 100),
198 VppDot1QSubint(self, self.pg2, 200)
199 # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
202 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
204 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
205 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
206 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
209 self.pg_if_packet_sizes = [64, 1500, 9020]
211 self.interfaces = list(self.pg_interfaces)
212 self.interfaces.extend(self.sub_interfaces)
214 # setup all interfaces
215 for i in self.interfaces:
221 """Run standard test teardown and log ``show ip6 neighbors``."""
222 for i in self.interfaces:
226 for i in self.sub_interfaces:
227 i.remove_vpp_config()
229 super(TestIPv6, self).tearDown()
230 if not self.vpp_dead:
231 self.logger.info(self.vapi.cli("show ip6 neighbors"))
232 # info(self.vapi.cli("show ip6 fib")) # many entries
234 def modify_packet(self, src_if, packet_size, pkt):
235 """Add load, set destination IP and extend packet to required packet
236 size for defined interface.
238 :param VppInterface src_if: Interface to create packet for.
239 :param int packet_size: Required packet size.
240 :param Scapy pkt: Packet to be modified.
242 dst_if_idx = packet_size / 10 % 2
243 dst_if = self.flows[src_if][dst_if_idx]
244 info = self.create_packet_info(src_if, dst_if)
245 payload = self.info_to_payload(info)
246 p = pkt / Raw(payload)
247 p[IPv6].dst = dst_if.remote_ip6
249 if isinstance(src_if, VppSubInterface):
250 p = src_if.add_dot1_layer(p)
251 self.extend_packet(p, packet_size)
255 def create_stream(self, src_if):
256 """Create input packet stream for defined interface.
258 :param VppInterface src_if: Interface to create packet stream for.
260 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
261 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
262 IPv6(src=src_if.remote_ip6) /
263 inet6.UDP(sport=1234, dport=1234))
265 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
266 for i in moves.range(self.pg_if_packet_sizes[0],
267 self.pg_if_packet_sizes[1], 10)]
268 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
269 for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
270 self.pg_if_packet_sizes[2] + hdr_ext,
276 def verify_capture(self, dst_if, capture):
277 """Verify captured input packet stream for defined interface.
279 :param VppInterface dst_if: Interface to verify captured packet stream
281 :param list capture: Captured packet stream.
283 self.logger.info("Verifying capture on interface %s" % dst_if.name)
285 for i in self.interfaces:
286 last_info[i.sw_if_index] = None
288 dst_sw_if_index = dst_if.sw_if_index
289 if hasattr(dst_if, 'parent'):
291 for packet in capture:
293 # Check VLAN tags and Ethernet header
294 packet = dst_if.remove_dot1_layer(packet)
295 self.assertTrue(Dot1Q not in packet)
298 udp = packet[inet6.UDP]
299 payload_info = self.payload_to_info(packet[Raw])
300 packet_index = payload_info.index
301 self.assertEqual(payload_info.dst, dst_sw_if_index)
303 "Got packet on port %s: src=%u (id=%u)" %
304 (dst_if.name, payload_info.src, packet_index))
305 next_info = self.get_next_packet_info_for_interface2(
306 payload_info.src, dst_sw_if_index,
307 last_info[payload_info.src])
308 last_info[payload_info.src] = next_info
309 self.assertTrue(next_info is not None)
310 self.assertEqual(packet_index, next_info.index)
311 saved_packet = next_info.data
312 # Check standard fields
314 ip.src, saved_packet[IPv6].src)
316 ip.dst, saved_packet[IPv6].dst)
318 udp.sport, saved_packet[inet6.UDP].sport)
320 udp.dport, saved_packet[inet6.UDP].dport)
322 self.logger.error(ppp("Unexpected or invalid packet:", packet))
324 for i in self.interfaces:
325 remaining_packet = self.get_next_packet_info_for_interface2(
326 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
327 self.assertTrue(remaining_packet is None,
328 "Interface %s: Packet expected from interface %s "
329 "didn't arrive" % (dst_if.name, i.name))
331 def test_next_header_anomaly(self):
332 """ IPv6 next header anomaly test
335 - ipv6 next header field = Fragment Header (44)
336 - next header is ICMPv6 Echo Request
337 - wait for reassembly
339 pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
340 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) /
343 self.pg0.add_stream(pkt)
346 # wait for reassembly
353 - Create IPv6 stream for pg0 interface
354 - Create IPv6 tagged streams for pg1's and pg2's subinterface.
355 - Send and verify received packets on each interface.
358 pkts = self.create_stream(self.pg0)
359 self.pg0.add_stream(pkts)
361 for i in self.sub_interfaces:
362 pkts = self.create_stream(i)
363 i.parent.add_stream(pkts)
365 self.pg_enable_capture(self.pg_interfaces)
368 pkts = self.pg0.get_capture()
369 self.verify_capture(self.pg0, pkts)
371 for i in self.sub_interfaces:
372 pkts = i.parent.get_capture()
373 self.verify_capture(i, pkts)
376 """ IPv6 Neighbour Solicitation Exceptions
379 - Send an NS Sourced from an address not covered by the link sub-net
380 - Send an NS to an mcast address the router has not joined
381 - Send NS for a target address the router does not onn.
385 # An NS from a non link source address
387 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
388 d = inet_ntop(AF_INET6, nsma)
390 p = (Ether(dst=in6_getnsmac(nsma)) /
391 IPv6(dst=d, src="2002::2") /
392 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
393 ICMPv6NDOptSrcLLAddr(
394 lladdr=self.pg0.remote_mac))
397 self.send_and_assert_no_replies(
399 "No response to NS source by address not on sub-net")
402 # An NS for sent to a solicited mcast group the router is
403 # not a member of FAILS
406 nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
407 d = inet_ntop(AF_INET6, nsma)
409 p = (Ether(dst=in6_getnsmac(nsma)) /
410 IPv6(dst=d, src=self.pg0.remote_ip6) /
411 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
412 ICMPv6NDOptSrcLLAddr(
413 lladdr=self.pg0.remote_mac))
416 self.send_and_assert_no_replies(
418 "No response to NS sent to unjoined mcast address")
421 # An NS whose target address is one the router does not own
423 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
424 d = inet_ntop(AF_INET6, nsma)
426 p = (Ether(dst=in6_getnsmac(nsma)) /
427 IPv6(dst=d, src=self.pg0.remote_ip6) /
428 ICMPv6ND_NS(tgt="fd::ffff") /
429 ICMPv6NDOptSrcLLAddr(
430 lladdr=self.pg0.remote_mac))
433 self.send_and_assert_no_replies(self.pg0, pkts,
434 "No response to NS for unknown target")
437 # A neighbor entry that has no associated FIB-entry
439 self.pg0.generate_remote_hosts(4)
440 nd_entry = VppNeighbor(self,
441 self.pg0.sw_if_index,
442 self.pg0.remote_hosts[2].mac,
443 self.pg0.remote_hosts[2].ip6,
445 nd_entry.add_vpp_config()
448 # check we have the neighbor, but no route
450 self.assertTrue(find_nbr(self,
451 self.pg0.sw_if_index,
452 self.pg0._remote_hosts[2].ip6))
453 self.assertFalse(find_route(self,
454 self.pg0._remote_hosts[2].ip6,
458 # send an NS from a link local address to the interface's global
461 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
463 dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
464 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
465 ICMPv6NDOptSrcLLAddr(
466 lladdr=self.pg0.remote_mac))
468 self.send_and_expect_na(self.pg0, p,
469 "NS from link-local",
470 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
471 tgt_ip=self.pg0.local_ip6)
474 # we should have learned an ND entry for the peer's link-local
475 # but not inserted a route to it in the FIB
477 self.assertTrue(find_nbr(self,
478 self.pg0.sw_if_index,
479 self.pg0._remote_hosts[2].ip6_ll))
480 self.assertFalse(find_route(self,
481 self.pg0._remote_hosts[2].ip6_ll,
485 # An NS to the router's own Link-local
487 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
489 dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
490 ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
491 ICMPv6NDOptSrcLLAddr(
492 lladdr=self.pg0.remote_mac))
494 self.send_and_expect_na(self.pg0, p,
495 "NS to/from link-local",
496 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
497 tgt_ip=self.pg0.local_ip6_ll)
500 # we should have learned an ND entry for the peer's link-local
501 # but not inserted a route to it in the FIB
503 self.assertTrue(find_nbr(self,
504 self.pg0.sw_if_index,
505 self.pg0._remote_hosts[3].ip6_ll))
506 self.assertFalse(find_route(self,
507 self.pg0._remote_hosts[3].ip6_ll,
510 def test_ns_duplicates(self):
514 # Generate some hosts on the LAN
516 self.pg1.generate_remote_hosts(3)
519 # Add host 1 on pg1 and pg2
521 ns_pg1 = VppNeighbor(self,
522 self.pg1.sw_if_index,
523 self.pg1.remote_hosts[1].mac,
524 self.pg1.remote_hosts[1].ip6)
525 ns_pg1.add_vpp_config()
526 ns_pg2 = VppNeighbor(self,
527 self.pg2.sw_if_index,
529 self.pg1.remote_hosts[1].ip6)
530 ns_pg2.add_vpp_config()
533 # IP packet destined for pg1 remote host arrives on pg1 again.
535 p = (Ether(dst=self.pg0.local_mac,
536 src=self.pg0.remote_mac) /
537 IPv6(src=self.pg0.remote_ip6,
538 dst=self.pg1.remote_hosts[1].ip6) /
539 inet6.UDP(sport=1234, dport=1234) /
542 self.pg0.add_stream(p)
543 self.pg_enable_capture(self.pg_interfaces)
546 rx1 = self.pg1.get_capture(1)
548 self.verify_ip(rx1[0],
550 self.pg1.remote_hosts[1].mac,
552 self.pg1.remote_hosts[1].ip6)
555 # remove the duplicate on pg1
556 # packet stream should generate NSs out of pg1
558 ns_pg1.remove_vpp_config()
560 self.send_and_expect_ns(self.pg0, self.pg1,
561 p, self.pg1.remote_hosts[1].ip6)
566 ns_pg1.add_vpp_config()
568 self.pg0.add_stream(p)
569 self.pg_enable_capture(self.pg_interfaces)
572 rx1 = self.pg1.get_capture(1)
574 self.verify_ip(rx1[0],
576 self.pg1.remote_hosts[1].mac,
578 self.pg1.remote_hosts[1].ip6)
580 def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
582 dst_ip = intf.remote_ip6
584 # unicasted packets must come to the unicast mac
585 self.assertEqual(rx[Ether].dst, intf.remote_mac)
587 # and from the router's MAC
588 self.assertEqual(rx[Ether].src, intf.local_mac)
590 # the rx'd RA should be addressed to the sender's source
591 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
592 self.assertEqual(in6_ptop(rx[IPv6].dst),
595 # and come from the router's link local
596 self.assertTrue(in6_islladdr(rx[IPv6].src))
597 self.assertEqual(in6_ptop(rx[IPv6].src),
598 in6_ptop(mk_ll_addr(intf.local_mac)))
600 # it should contain the links MTU
602 self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
604 # it should contain the source's link layer address option
605 sll = ra[ICMPv6NDOptSrcLLAddr]
606 self.assertEqual(sll.lladdr, intf.local_mac)
609 # the RA should not contain prefix information
610 self.assertFalse(ra.haslayer(
611 ICMPv6NDOptPrefixInfo))
613 raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
615 # the options are nested in the scapy packet in way that i cannot
616 # decipher how to decode. this 1st layer of option always returns
617 # nested classes, so a direct obj1=obj2 comparison always fails.
618 # however, the getlayer(.., 2) does give one instance.
619 # so we cheat here and construct a new opt instance for comparison
620 rd = ICMPv6NDOptPrefixInfo(
621 prefixlen=raos.prefixlen,
625 if type(pi_opt) is list:
626 for ii in range(len(pi_opt)):
627 self.assertEqual(pi_opt[ii], rd)
629 ICMPv6NDOptPrefixInfo, ii + 2)
631 self.assertEqual(pi_opt, raos, 'Expected: %s, received: %s'
632 % (pi_opt.show(dump=True),
633 raos.show(dump=True)))
635 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
636 filter_out_fn=is_ipv6_misc,
638 intf.add_stream(pkts)
639 self.pg_enable_capture(self.pg_interfaces)
641 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
643 self.assertEqual(len(rx), 1)
645 self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
648 """ IPv6 Router Solicitation Exceptions
654 # Before we begin change the IPv6 RA responses to use the unicast
655 # address - that way we will not confuse them with the periodic
656 # RAs which go to the mcast address
657 # Sit and wait for the first periodic RA.
661 self.pg0.ip6_ra_config(send_unicast=1)
664 # An RS from a link source address
665 # - expect an RA in return
667 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
669 dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
672 self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
675 # For the next RS sent the RA should be rate limited
677 self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
680 # When we reconfigure the IPv6 RA config,
681 # we reset the RA rate limiting,
682 # so we need to do this before each test below so as not to drop
683 # packets for rate limiting reasons. Test this works here.
685 self.pg0.ip6_ra_config(send_unicast=1)
686 self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
689 # An RS sent from a non-link local source
691 self.pg0.ip6_ra_config(send_unicast=1)
692 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
693 IPv6(dst=self.pg0.local_ip6,
697 self.send_and_assert_no_replies(self.pg0, pkts,
698 "RS from non-link source")
701 # Source an RS from a link local address
703 self.pg0.ip6_ra_config(send_unicast=1)
704 ll = mk_ll_addr(self.pg0.remote_mac)
705 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
706 IPv6(dst=self.pg0.local_ip6, src=ll) /
709 self.send_and_expect_ra(self.pg0, pkts,
710 "RS sourced from link-local",
714 # Send the RS multicast
716 self.pg0.ip6_ra_config(send_unicast=1)
717 dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
718 ll = mk_ll_addr(self.pg0.remote_mac)
719 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
720 IPv6(dst="ff02::2", src=ll) /
723 self.send_and_expect_ra(self.pg0, pkts,
724 "RS sourced from link-local",
728 # Source from the unspecified address ::. This happens when the RS
729 # is sent before the host has a configured address/sub-net,
730 # i.e. auto-config. Since the sender has no IP address, the reply
731 # comes back mcast - so the capture needs to not filter this.
732 # If we happen to pick up the periodic RA at this point then so be it,
735 self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
736 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
737 IPv6(dst="ff02::2", src="::") /
740 self.send_and_expect_ra(self.pg0, pkts,
741 "RS sourced from unspecified",
746 # Configure The RA to announce the links prefix
748 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
749 self.pg0.local_ip6_prefix_len))
752 # RAs should now contain the prefix information option
754 opt = ICMPv6NDOptPrefixInfo(
755 prefixlen=self.pg0.local_ip6_prefix_len,
756 prefix=self.pg0.local_ip6,
760 self.pg0.ip6_ra_config(send_unicast=1)
761 ll = mk_ll_addr(self.pg0.remote_mac)
762 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
763 IPv6(dst=self.pg0.local_ip6, src=ll) /
765 self.send_and_expect_ra(self.pg0, p,
766 "RA with prefix-info",
771 # Change the prefix info to not off-link
774 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
775 self.pg0.local_ip6_prefix_len),
778 opt = ICMPv6NDOptPrefixInfo(
779 prefixlen=self.pg0.local_ip6_prefix_len,
780 prefix=self.pg0.local_ip6,
784 self.pg0.ip6_ra_config(send_unicast=1)
785 self.send_and_expect_ra(self.pg0, p,
786 "RA with Prefix info with L-flag=0",
791 # Change the prefix info to not off-link, no-autoconfig
792 # L and A flag are clear in the advert
794 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
795 self.pg0.local_ip6_prefix_len),
799 opt = ICMPv6NDOptPrefixInfo(
800 prefixlen=self.pg0.local_ip6_prefix_len,
801 prefix=self.pg0.local_ip6,
805 self.pg0.ip6_ra_config(send_unicast=1)
806 self.send_and_expect_ra(self.pg0, p,
807 "RA with Prefix info with A & L-flag=0",
812 # Change the flag settings back to the defaults
813 # L and A flag are set in the advert
815 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
816 self.pg0.local_ip6_prefix_len))
818 opt = ICMPv6NDOptPrefixInfo(
819 prefixlen=self.pg0.local_ip6_prefix_len,
820 prefix=self.pg0.local_ip6,
824 self.pg0.ip6_ra_config(send_unicast=1)
825 self.send_and_expect_ra(self.pg0, p,
826 "RA with Prefix info",
831 # Change the prefix info to not off-link, no-autoconfig
832 # L and A flag are clear in the advert
834 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
835 self.pg0.local_ip6_prefix_len),
839 opt = ICMPv6NDOptPrefixInfo(
840 prefixlen=self.pg0.local_ip6_prefix_len,
841 prefix=self.pg0.local_ip6,
845 self.pg0.ip6_ra_config(send_unicast=1)
846 self.send_and_expect_ra(self.pg0, p,
847 "RA with Prefix info with A & L-flag=0",
852 # Use the reset to defaults option to revert to defaults
853 # L and A flag are clear in the advert
855 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
856 self.pg0.local_ip6_prefix_len),
859 opt = ICMPv6NDOptPrefixInfo(
860 prefixlen=self.pg0.local_ip6_prefix_len,
861 prefix=self.pg0.local_ip6,
865 self.pg0.ip6_ra_config(send_unicast=1)
866 self.send_and_expect_ra(self.pg0, p,
867 "RA with Prefix reverted to defaults",
872 # Advertise Another prefix. With no L-flag/A-flag
874 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
875 self.pg1.local_ip6_prefix_len),
879 opt = [ICMPv6NDOptPrefixInfo(
880 prefixlen=self.pg0.local_ip6_prefix_len,
881 prefix=self.pg0.local_ip6,
884 ICMPv6NDOptPrefixInfo(
885 prefixlen=self.pg1.local_ip6_prefix_len,
886 prefix=self.pg1.local_ip6,
890 self.pg0.ip6_ra_config(send_unicast=1)
891 ll = mk_ll_addr(self.pg0.remote_mac)
892 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
893 IPv6(dst=self.pg0.local_ip6, src=ll) /
895 self.send_and_expect_ra(self.pg0, p,
896 "RA with multiple Prefix infos",
901 # Remove the first prefix-info - expect the second is still in the
904 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
905 self.pg0.local_ip6_prefix_len),
908 opt = ICMPv6NDOptPrefixInfo(
909 prefixlen=self.pg1.local_ip6_prefix_len,
910 prefix=self.pg1.local_ip6,
914 self.pg0.ip6_ra_config(send_unicast=1)
915 self.send_and_expect_ra(self.pg0, p,
916 "RA with Prefix reverted to defaults",
921 # Remove the second prefix-info - expect no prefix-info in the adverts
923 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
924 self.pg1.local_ip6_prefix_len),
927 self.pg0.ip6_ra_config(send_unicast=1)
928 self.send_and_expect_ra(self.pg0, p,
929 "RA with Prefix reverted to defaults",
933 # Reset the periodic advertisements back to default values
935 self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
938 class TestICMPv6Echo(VppTestCase):
939 """ ICMPv6 Echo Test Case """
943 super(TestICMPv6Echo, cls).setUpClass()
946 def tearDownClass(cls):
947 super(TestICMPv6Echo, cls).tearDownClass()
950 super(TestICMPv6Echo, self).setUp()
952 # create 1 pg interface
953 self.create_pg_interfaces(range(1))
955 for i in self.pg_interfaces:
961 super(TestICMPv6Echo, self).tearDown()
962 for i in self.pg_interfaces:
967 def test_icmpv6_echo(self):
968 """ VPP replies to ICMPv6 Echo Request
972 - Receive ICMPv6 Echo Request message on pg0 interface.
973 - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
978 icmpv6_data = b'\x0a' * 18
979 p_echo_request = (Ether(src=self.pg0.remote_mac,
980 dst=self.pg0.local_mac) /
981 IPv6(src=self.pg0.remote_ip6,
982 dst=self.pg0.local_ip6) /
988 self.pg0.add_stream(p_echo_request)
989 self.pg_enable_capture(self.pg_interfaces)
992 rx = self.pg0.get_capture(1)
996 icmpv6 = rx[ICMPv6EchoReply]
998 self.assertEqual(ether.src, self.pg0.local_mac)
999 self.assertEqual(ether.dst, self.pg0.remote_mac)
1001 self.assertEqual(ipv6.src, self.pg0.local_ip6)
1002 self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1005 icmp6types[icmpv6.type], "Echo Reply")
1006 self.assertEqual(icmpv6.id, icmpv6_id)
1007 self.assertEqual(icmpv6.seq, icmpv6_seq)
1008 self.assertEqual(icmpv6.data, icmpv6_data)
1011 class TestIPv6RD(TestIPv6ND):
1012 """ IPv6 Router Discovery Test Case """
1015 def setUpClass(cls):
1016 super(TestIPv6RD, cls).setUpClass()
1019 def tearDownClass(cls):
1020 super(TestIPv6RD, cls).tearDownClass()
1023 super(TestIPv6RD, self).setUp()
1025 # create 2 pg interfaces
1026 self.create_pg_interfaces(range(2))
1028 self.interfaces = list(self.pg_interfaces)
1030 # setup all interfaces
1031 for i in self.interfaces:
1036 for i in self.interfaces:
1039 super(TestIPv6RD, self).tearDown()
1041 def test_rd_send_router_solicitation(self):
1042 """ Verify router solicitation packets """
1045 self.pg_enable_capture(self.pg_interfaces)
1047 self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1049 rx_list = self.pg1.get_capture(count, timeout=3)
1050 self.assertEqual(len(rx_list), count)
1051 for packet in rx_list:
1052 self.assertEqual(packet.haslayer(IPv6), 1)
1053 self.assertEqual(packet[IPv6].haslayer(
1055 dst = ip6_normalize(packet[IPv6].dst)
1056 dst2 = ip6_normalize("ff02::2")
1057 self.assert_equal(dst, dst2)
1058 src = ip6_normalize(packet[IPv6].src)
1059 src2 = ip6_normalize(self.pg1.local_ip6_ll)
1060 self.assert_equal(src, src2)
1062 bool(packet[ICMPv6ND_RS].haslayer(
1063 ICMPv6NDOptSrcLLAddr)))
1065 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1068 def verify_prefix_info(self, reported_prefix, prefix_option):
1069 prefix = IPv6Network(
1070 text_type(prefix_option.getfieldval("prefix") +
1072 text_type(prefix_option.getfieldval("prefixlen"))),
1074 self.assert_equal(reported_prefix.prefix.network_address,
1075 prefix.network_address)
1076 L = prefix_option.getfieldval("L")
1077 A = prefix_option.getfieldval("A")
1078 option_flags = (L << 7) | (A << 6)
1079 self.assert_equal(reported_prefix.flags, option_flags)
1080 self.assert_equal(reported_prefix.valid_time,
1081 prefix_option.getfieldval("validlifetime"))
1082 self.assert_equal(reported_prefix.preferred_time,
1083 prefix_option.getfieldval("preferredlifetime"))
1085 def test_rd_receive_router_advertisement(self):
1086 """ Verify events triggered by received RA packets """
1088 self.vapi.want_ip6_ra_events()
1090 prefix_info_1 = ICMPv6NDOptPrefixInfo(
1094 preferredlifetime=500,
1099 prefix_info_2 = ICMPv6NDOptPrefixInfo(
1103 preferredlifetime=1000,
1108 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1109 IPv6(dst=self.pg1.local_ip6_ll,
1110 src=mk_ll_addr(self.pg1.remote_mac)) /
1114 self.pg1.add_stream([p])
1117 ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1119 self.assert_equal(ev.current_hop_limit, 0)
1120 self.assert_equal(ev.flags, 8)
1121 self.assert_equal(ev.router_lifetime_in_sec, 1800)
1122 self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1124 ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1126 self.assert_equal(ev.n_prefixes, 2)
1128 self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1129 self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1132 class TestIPv6RDControlPlane(TestIPv6ND):
1133 """ IPv6 Router Discovery Control Plane Test Case """
1136 def setUpClass(cls):
1137 super(TestIPv6RDControlPlane, cls).setUpClass()
1140 def tearDownClass(cls):
1141 super(TestIPv6RDControlPlane, cls).tearDownClass()
1144 super(TestIPv6RDControlPlane, self).setUp()
1146 # create 1 pg interface
1147 self.create_pg_interfaces(range(1))
1149 self.interfaces = list(self.pg_interfaces)
1151 # setup all interfaces
1152 for i in self.interfaces:
1157 super(TestIPv6RDControlPlane, self).tearDown()
1160 def create_ra_packet(pg, routerlifetime=None):
1161 src_ip = pg.remote_ip6_ll
1162 dst_ip = pg.local_ip6
1163 if routerlifetime is not None:
1164 ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1167 p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1168 IPv6(dst=dst_ip, src=src_ip) / ra)
1172 def get_default_routes(fib):
1175 if entry.route.prefix.prefixlen == 0:
1176 for path in entry.route.paths:
1177 if path.sw_if_index != 0xFFFFFFFF:
1179 defaut_route['sw_if_index'] = path.sw_if_index
1180 defaut_route['next_hop'] = path.nh.address.ip6
1181 list.append(defaut_route)
1185 def get_interface_addresses(fib, pg):
1188 if entry.route.prefix.prefixlen == 128:
1189 path = entry.route.paths[0]
1190 if path.sw_if_index == pg.sw_if_index:
1191 list.append(str(entry.route.prefix.network_address))
1195 """ Test handling of SLAAC addresses and default routes """
1197 fib = self.vapi.ip_route_dump(0, True)
1198 default_routes = self.get_default_routes(fib)
1199 initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1200 self.assertEqual(default_routes, [])
1201 router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll))
1203 self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1208 packet = (self.create_ra_packet(
1209 self.pg0) / ICMPv6NDOptPrefixInfo(
1213 preferredlifetime=2,
1216 ) / ICMPv6NDOptPrefixInfo(
1220 preferredlifetime=1000,
1224 self.pg0.add_stream([packet])
1229 fib = self.vapi.ip_route_dump(0, True)
1231 # check FIB for new address
1232 addresses = set(self.get_interface_addresses(fib, self.pg0))
1233 new_addresses = addresses.difference(initial_addresses)
1234 self.assertEqual(len(new_addresses), 1)
1235 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1237 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1239 # check FIB for new default route
1240 default_routes = self.get_default_routes(fib)
1241 self.assertEqual(len(default_routes), 1)
1242 dr = default_routes[0]
1243 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1244 self.assertEqual(dr['next_hop'], router_address)
1246 # send RA to delete default route
1247 packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1248 self.pg0.add_stream([packet])
1253 # check that default route is deleted
1254 fib = self.vapi.ip_route_dump(0, True)
1255 default_routes = self.get_default_routes(fib)
1256 self.assertEqual(len(default_routes), 0)
1261 packet = self.create_ra_packet(self.pg0)
1262 self.pg0.add_stream([packet])
1267 # check FIB for new default route
1268 fib = self.vapi.ip_route_dump(0, True)
1269 default_routes = self.get_default_routes(fib)
1270 self.assertEqual(len(default_routes), 1)
1271 dr = default_routes[0]
1272 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1273 self.assertEqual(dr['next_hop'], router_address)
1275 # send RA, updating router lifetime to 1s
1276 packet = self.create_ra_packet(self.pg0, 1)
1277 self.pg0.add_stream([packet])
1282 # check that default route still exists
1283 fib = self.vapi.ip_route_dump(0, True)
1284 default_routes = self.get_default_routes(fib)
1285 self.assertEqual(len(default_routes), 1)
1286 dr = default_routes[0]
1287 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1288 self.assertEqual(dr['next_hop'], router_address)
1292 # check that default route is deleted
1293 fib = self.vapi.ip_route_dump(0, True)
1294 default_routes = self.get_default_routes(fib)
1295 self.assertEqual(len(default_routes), 0)
1297 # check FIB still contains the SLAAC address
1298 addresses = set(self.get_interface_addresses(fib, self.pg0))
1299 new_addresses = addresses.difference(initial_addresses)
1301 self.assertEqual(len(new_addresses), 1)
1302 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1304 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1308 # check that SLAAC address is deleted
1309 fib = self.vapi.ip_route_dump(0, True)
1310 addresses = set(self.get_interface_addresses(fib, self.pg0))
1311 new_addresses = addresses.difference(initial_addresses)
1312 self.assertEqual(len(new_addresses), 0)
1315 class IPv6NDProxyTest(TestIPv6ND):
1316 """ IPv6 ND ProxyTest Case """
1319 def setUpClass(cls):
1320 super(IPv6NDProxyTest, cls).setUpClass()
1323 def tearDownClass(cls):
1324 super(IPv6NDProxyTest, cls).tearDownClass()
1327 super(IPv6NDProxyTest, self).setUp()
1329 # create 3 pg interfaces
1330 self.create_pg_interfaces(range(3))
1332 # pg0 is the master interface, with the configured subnet
1334 self.pg0.config_ip6()
1335 self.pg0.resolve_ndp()
1337 self.pg1.ip6_enable()
1338 self.pg2.ip6_enable()
1341 super(IPv6NDProxyTest, self).tearDown()
1343 def test_nd_proxy(self):
1344 """ IPv6 Proxy ND """
1347 # Generate some hosts in the subnet that we are proxying
1349 self.pg0.generate_remote_hosts(8)
1351 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1352 d = inet_ntop(AF_INET6, nsma)
1355 # Send an NS for one of those remote hosts on one of the proxy links
1356 # expect no response since it's from an address that is not
1357 # on the link that has the prefix configured
1359 ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1361 src=self.pg0._remote_hosts[2].ip6) /
1362 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1363 ICMPv6NDOptSrcLLAddr(
1364 lladdr=self.pg0._remote_hosts[2].mac))
1366 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1369 # Add proxy support for the host
1371 self.vapi.ip6nd_proxy_add_del(
1372 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1373 sw_if_index=self.pg1.sw_if_index)
1376 # try that NS again. this time we expect an NA back
1378 self.send_and_expect_na(self.pg1, ns_pg1,
1379 "NS to proxy entry",
1380 dst_ip=self.pg0._remote_hosts[2].ip6,
1381 tgt_ip=self.pg0.local_ip6)
1384 # ... and that we have an entry in the ND cache
1386 self.assertTrue(find_nbr(self,
1387 self.pg1.sw_if_index,
1388 self.pg0._remote_hosts[2].ip6))
1391 # ... and we can route traffic to it
1393 t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1394 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1395 src=self.pg0.remote_ip6) /
1396 inet6.UDP(sport=10000, dport=20000) /
1399 self.pg0.add_stream(t)
1400 self.pg_enable_capture(self.pg_interfaces)
1402 rx = self.pg1.get_capture(1)
1405 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1406 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1408 self.assertEqual(rx[IPv6].src,
1410 self.assertEqual(rx[IPv6].dst,
1414 # Test we proxy for the host on the main interface
1416 ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1417 IPv6(dst=d, src=self.pg0.remote_ip6) /
1419 tgt=self.pg0._remote_hosts[2].ip6) /
1420 ICMPv6NDOptSrcLLAddr(
1421 lladdr=self.pg0.remote_mac))
1423 self.send_and_expect_na(self.pg0, ns_pg0,
1424 "NS to proxy entry on main",
1425 tgt_ip=self.pg0._remote_hosts[2].ip6,
1426 dst_ip=self.pg0.remote_ip6)
1429 # Setup and resolve proxy for another host on another interface
1431 ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1433 src=self.pg0._remote_hosts[3].ip6) /
1434 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1435 ICMPv6NDOptSrcLLAddr(
1436 lladdr=self.pg0._remote_hosts[2].mac))
1438 self.vapi.ip6nd_proxy_add_del(
1439 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1440 sw_if_index=self.pg2.sw_if_index)
1442 self.send_and_expect_na(self.pg2, ns_pg2,
1443 "NS to proxy entry other interface",
1444 dst_ip=self.pg0._remote_hosts[3].ip6,
1445 tgt_ip=self.pg0.local_ip6)
1447 self.assertTrue(find_nbr(self,
1448 self.pg2.sw_if_index,
1449 self.pg0._remote_hosts[3].ip6))
1452 # hosts can communicate. pg2->pg1
1454 t2 = (Ether(dst=self.pg2.local_mac,
1455 src=self.pg0.remote_hosts[3].mac) /
1456 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1457 src=self.pg0._remote_hosts[3].ip6) /
1458 inet6.UDP(sport=10000, dport=20000) /
1461 self.pg2.add_stream(t2)
1462 self.pg_enable_capture(self.pg_interfaces)
1464 rx = self.pg1.get_capture(1)
1467 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1468 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1470 self.assertEqual(rx[IPv6].src,
1472 self.assertEqual(rx[IPv6].dst,
1476 # remove the proxy configs
1478 self.vapi.ip6nd_proxy_add_del(
1479 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1480 sw_if_index=self.pg1.sw_if_index, is_del=1)
1481 self.vapi.ip6nd_proxy_add_del(
1482 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1483 sw_if_index=self.pg2.sw_if_index, is_del=1)
1485 self.assertFalse(find_nbr(self,
1486 self.pg2.sw_if_index,
1487 self.pg0._remote_hosts[3].ip6))
1488 self.assertFalse(find_nbr(self,
1489 self.pg1.sw_if_index,
1490 self.pg0._remote_hosts[2].ip6))
1493 # no longer proxy-ing...
1495 self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1496 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1497 self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1500 # no longer forwarding. traffic generates NS out of the glean/main
1503 self.pg2.add_stream(t2)
1504 self.pg_enable_capture(self.pg_interfaces)
1507 rx = self.pg0.get_capture(1)
1509 self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1512 class TestIPNull(VppTestCase):
1513 """ IPv6 routes via NULL """
1516 def setUpClass(cls):
1517 super(TestIPNull, cls).setUpClass()
1520 def tearDownClass(cls):
1521 super(TestIPNull, cls).tearDownClass()
1524 super(TestIPNull, self).setUp()
1526 # create 2 pg interfaces
1527 self.create_pg_interfaces(range(1))
1529 for i in self.pg_interfaces:
1535 super(TestIPNull, self).tearDown()
1536 for i in self.pg_interfaces:
1540 def test_ip_null(self):
1541 """ IP NULL route """
1543 p = (Ether(src=self.pg0.remote_mac,
1544 dst=self.pg0.local_mac) /
1545 IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1546 inet6.UDP(sport=1234, dport=1234) /
1550 # A route via IP NULL that will reply with ICMP unreachables
1552 ip_unreach = VppIpRoute(
1554 [VppRoutePath("::", 0xffffffff,
1555 type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)])
1556 ip_unreach.add_vpp_config()
1558 self.pg0.add_stream(p)
1559 self.pg_enable_capture(self.pg_interfaces)
1562 rx = self.pg0.get_capture(1)
1564 icmp = rx[ICMPv6DestUnreach]
1566 # 0 = "No route to destination"
1567 self.assertEqual(icmp.code, 0)
1569 # ICMP is rate limited. pause a bit
1573 # A route via IP NULL that will reply with ICMP prohibited
1575 ip_prohibit = VppIpRoute(
1576 self, "2001::1", 128,
1577 [VppRoutePath("::", 0xffffffff,
1578 type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)])
1579 ip_prohibit.add_vpp_config()
1581 self.pg0.add_stream(p)
1582 self.pg_enable_capture(self.pg_interfaces)
1585 rx = self.pg0.get_capture(1)
1587 icmp = rx[ICMPv6DestUnreach]
1589 # 1 = "Communication with destination administratively prohibited"
1590 self.assertEqual(icmp.code, 1)
1593 class TestIPDisabled(VppTestCase):
1594 """ IPv6 disabled """
1597 def setUpClass(cls):
1598 super(TestIPDisabled, cls).setUpClass()
1601 def tearDownClass(cls):
1602 super(TestIPDisabled, cls).tearDownClass()
1605 super(TestIPDisabled, self).setUp()
1607 # create 2 pg interfaces
1608 self.create_pg_interfaces(range(2))
1612 self.pg0.config_ip6()
1613 self.pg0.resolve_ndp()
1615 # PG 1 is not IP enabled
1619 super(TestIPDisabled, self).tearDown()
1620 for i in self.pg_interfaces:
1624 def test_ip_disabled(self):
1629 # one accepting interface, pg0, 2 forwarding interfaces
1631 route_ff_01 = VppIpMRoute(
1635 MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
1636 [VppMRoutePath(self.pg1.sw_if_index,
1637 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
1638 VppMRoutePath(self.pg0.sw_if_index,
1639 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
1640 route_ff_01.add_vpp_config()
1642 pu = (Ether(src=self.pg1.remote_mac,
1643 dst=self.pg1.local_mac) /
1644 IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1645 inet6.UDP(sport=1234, dport=1234) /
1647 pm = (Ether(src=self.pg1.remote_mac,
1648 dst=self.pg1.local_mac) /
1649 IPv6(src="2001::1", dst="ffef::1") /
1650 inet6.UDP(sport=1234, dport=1234) /
1654 # PG1 does not forward IP traffic
1656 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1657 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1662 self.pg1.config_ip6()
1665 # Now we get packets through
1667 self.pg1.add_stream(pu)
1668 self.pg_enable_capture(self.pg_interfaces)
1670 rx = self.pg0.get_capture(1)
1672 self.pg1.add_stream(pm)
1673 self.pg_enable_capture(self.pg_interfaces)
1675 rx = self.pg0.get_capture(1)
1680 self.pg1.unconfig_ip6()
1683 # PG1 does not forward IP traffic
1685 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1686 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1689 class TestIP6LoadBalance(VppTestCase):
1690 """ IPv6 Load-Balancing """
1693 def setUpClass(cls):
1694 super(TestIP6LoadBalance, cls).setUpClass()
1697 def tearDownClass(cls):
1698 super(TestIP6LoadBalance, cls).tearDownClass()
1701 super(TestIP6LoadBalance, self).setUp()
1703 self.create_pg_interfaces(range(5))
1705 mpls_tbl = VppMplsTable(self, 0)
1706 mpls_tbl.add_vpp_config()
1708 for i in self.pg_interfaces:
1715 for i in self.pg_interfaces:
1719 super(TestIP6LoadBalance, self).tearDown()
1721 def pg_send(self, input, pkts):
1722 self.vapi.cli("clear trace")
1723 input.add_stream(pkts)
1724 self.pg_enable_capture(self.pg_interfaces)
1727 def send_and_expect_load_balancing(self, input, pkts, outputs):
1728 self.pg_send(input, pkts)
1730 rx = oo._get_capture(1)
1731 self.assertNotEqual(0, len(rx))
1733 def send_and_expect_one_itf(self, input, pkts, itf):
1734 self.pg_send(input, pkts)
1735 rx = itf.get_capture(len(pkts))
1737 def test_ip6_load_balance(self):
1738 """ IPv6 Load-Balancing """
1741 # An array of packets that differ only in the destination port
1745 # - MPLS non-EOS with an entropy label
1749 port_mpls_neos_pkts = []
1753 # An array of packets that differ only in the source address
1758 for ii in range(NUM_PKTS):
1760 IPv6(dst="3000::1", src="3000:1::1") /
1761 inet6.UDP(sport=1234, dport=1234 + ii) /
1763 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1764 dst=self.pg0.local_mac) /
1766 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1767 dst=self.pg0.local_mac) /
1768 MPLS(label=66, ttl=2) /
1770 port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1771 dst=self.pg0.local_mac) /
1772 MPLS(label=67, ttl=2) /
1773 MPLS(label=77, ttl=2) /
1775 port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1776 dst=self.pg0.local_mac) /
1777 MPLS(label=67, ttl=2) /
1778 MPLS(label=14, ttl=2) /
1779 MPLS(label=999, ttl=2) /
1782 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
1783 inet6.UDP(sport=1234, dport=1234) /
1785 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1786 dst=self.pg0.local_mac) /
1788 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1789 dst=self.pg0.local_mac) /
1790 MPLS(label=66, ttl=2) /
1794 # A route for the IP packets
1796 route_3000_1 = VppIpRoute(self, "3000::1", 128,
1797 [VppRoutePath(self.pg1.remote_ip6,
1798 self.pg1.sw_if_index),
1799 VppRoutePath(self.pg2.remote_ip6,
1800 self.pg2.sw_if_index)])
1801 route_3000_1.add_vpp_config()
1804 # a local-label for the EOS packets
1806 binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
1807 binding.add_vpp_config()
1810 # An MPLS route for the non-EOS packets
1812 route_67 = VppMplsRoute(self, 67, 0,
1813 [VppRoutePath(self.pg1.remote_ip6,
1814 self.pg1.sw_if_index,
1816 VppRoutePath(self.pg2.remote_ip6,
1817 self.pg2.sw_if_index,
1819 route_67.add_vpp_config()
1822 # inject the packet on pg0 - expect load-balancing across the 2 paths
1823 # - since the default hash config is to use IP src,dst and port
1825 # We are not going to ensure equal amounts of packets across each link,
1826 # since the hash algorithm is statistical and therefore this can never
1827 # be guaranteed. But with 64 different packets we do expect some
1828 # balancing. So instead just ensure there is traffic on each link.
1830 self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
1831 [self.pg1, self.pg2])
1832 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1833 [self.pg1, self.pg2])
1834 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
1835 [self.pg1, self.pg2])
1836 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1837 [self.pg1, self.pg2])
1838 self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
1839 [self.pg1, self.pg2])
1842 # The packets with Entropy label in should not load-balance,
1843 # since the Entropy value is fixed.
1845 self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
1848 # change the flow hash config so it's only IP src,dst
1849 # - now only the stream with differing source address will
1852 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=0, dport=0,
1855 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1856 [self.pg1, self.pg2])
1857 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1858 [self.pg1, self.pg2])
1859 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
1862 # change the flow hash config back to defaults
1864 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1,
1868 # Recursive prefixes
1869 # - testing that 2 stages of load-balancing occurs and there is no
1870 # polarisation (i.e. only 2 of 4 paths are used)
1875 for ii in range(257):
1876 port_pkts.append((Ether(src=self.pg0.remote_mac,
1877 dst=self.pg0.local_mac) /
1880 inet6.UDP(sport=1234,
1883 src_pkts.append((Ether(src=self.pg0.remote_mac,
1884 dst=self.pg0.local_mac) /
1886 src="4000:1::%d" % ii) /
1887 inet6.UDP(sport=1234, dport=1234) /
1890 route_3000_2 = VppIpRoute(self, "3000::2", 128,
1891 [VppRoutePath(self.pg3.remote_ip6,
1892 self.pg3.sw_if_index),
1893 VppRoutePath(self.pg4.remote_ip6,
1894 self.pg4.sw_if_index)])
1895 route_3000_2.add_vpp_config()
1897 route_4000_1 = VppIpRoute(self, "4000::1", 128,
1898 [VppRoutePath("3000::1",
1900 VppRoutePath("3000::2",
1902 route_4000_1.add_vpp_config()
1905 # inject the packet on pg0 - expect load-balancing across all 4 paths
1907 self.vapi.cli("clear trace")
1908 self.send_and_expect_load_balancing(self.pg0, port_pkts,
1909 [self.pg1, self.pg2,
1910 self.pg3, self.pg4])
1911 self.send_and_expect_load_balancing(self.pg0, src_pkts,
1912 [self.pg1, self.pg2,
1913 self.pg3, self.pg4])
1916 # Recursive prefixes
1917 # - testing that 2 stages of load-balancing no choices
1921 for ii in range(257):
1922 port_pkts.append((Ether(src=self.pg0.remote_mac,
1923 dst=self.pg0.local_mac) /
1926 inet6.UDP(sport=1234,
1930 route_5000_2 = VppIpRoute(self, "5000::2", 128,
1931 [VppRoutePath(self.pg3.remote_ip6,
1932 self.pg3.sw_if_index)])
1933 route_5000_2.add_vpp_config()
1935 route_6000_1 = VppIpRoute(self, "6000::1", 128,
1936 [VppRoutePath("5000::2",
1938 route_6000_1.add_vpp_config()
1941 # inject the packet on pg0 - expect load-balancing across all 4 paths
1943 self.vapi.cli("clear trace")
1944 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
1947 class TestIP6Punt(VppTestCase):
1948 """ IPv6 Punt Police/Redirect """
1951 def setUpClass(cls):
1952 super(TestIP6Punt, cls).setUpClass()
1955 def tearDownClass(cls):
1956 super(TestIP6Punt, cls).tearDownClass()
1959 super(TestIP6Punt, self).setUp()
1961 self.create_pg_interfaces(range(4))
1963 for i in self.pg_interfaces:
1969 super(TestIP6Punt, self).tearDown()
1970 for i in self.pg_interfaces:
1974 def test_ip_punt(self):
1975 """ IP6 punt police and redirect """
1977 p = (Ether(src=self.pg0.remote_mac,
1978 dst=self.pg0.local_mac) /
1979 IPv6(src=self.pg0.remote_ip6,
1980 dst=self.pg0.local_ip6) /
1981 inet6.TCP(sport=1234, dport=1234) /
1987 # Configure a punt redirect via pg1.
1989 nh_addr = self.pg1.remote_ip6
1990 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1991 self.pg1.sw_if_index,
1994 self.send_and_expect(self.pg0, pkts, self.pg1)
1999 policer = self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0,
2001 self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
2003 self.vapi.cli("clear trace")
2004 self.pg0.add_stream(pkts)
2005 self.pg_enable_capture(self.pg_interfaces)
2009 # the number of packet received should be greater than 0,
2010 # but not equal to the number sent, since some were policed
2012 rx = self.pg1._get_capture(1)
2013 self.assertGreater(len(rx), 0)
2014 self.assertLess(len(rx), len(pkts))
2017 # remove the policer. back to full rx
2019 self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
2020 self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0,
2021 rate_type=1, is_add=0)
2022 self.send_and_expect(self.pg0, pkts, self.pg1)
2025 # remove the redirect. expect full drop.
2027 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2028 self.pg1.sw_if_index,
2031 self.send_and_assert_no_replies(self.pg0, pkts,
2032 "IP no punt config")
2035 # Add a redirect that is not input port selective
2037 self.vapi.ip_punt_redirect(0xffffffff,
2038 self.pg1.sw_if_index,
2040 self.send_and_expect(self.pg0, pkts, self.pg1)
2042 self.vapi.ip_punt_redirect(0xffffffff,
2043 self.pg1.sw_if_index,
2047 def test_ip_punt_dump(self):
2048 """ IP6 punt redirect dump"""
2051 # Configure a punt redirects
2053 nh_addr = self.pg3.remote_ip6
2054 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2055 self.pg3.sw_if_index,
2057 self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
2058 self.pg3.sw_if_index,
2060 self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
2061 self.pg3.sw_if_index,
2065 # Dump pg0 punt redirects
2067 punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index,
2070 self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
2073 # Dump punt redirects for all interfaces
2075 punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2076 self.assertEqual(len(punts), 3)
2078 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2079 self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2080 self.assertEqual(str(punts[2].punt.nh), '::')
2083 class TestIPDeag(VppTestCase):
2084 """ IPv6 Deaggregate Routes """
2087 def setUpClass(cls):
2088 super(TestIPDeag, cls).setUpClass()
2091 def tearDownClass(cls):
2092 super(TestIPDeag, cls).tearDownClass()
2095 super(TestIPDeag, self).setUp()
2097 self.create_pg_interfaces(range(3))
2099 for i in self.pg_interfaces:
2105 super(TestIPDeag, self).tearDown()
2106 for i in self.pg_interfaces:
2110 def test_ip_deag(self):
2111 """ IP Deag Routes """
2114 # Create a table to be used for:
2115 # 1 - another destination address lookup
2116 # 2 - a source address lookup
2118 table_dst = VppIpTable(self, 1, is_ip6=1)
2119 table_src = VppIpTable(self, 2, is_ip6=1)
2120 table_dst.add_vpp_config()
2121 table_src.add_vpp_config()
2124 # Add a route in the default table to point to a deag/
2125 # second lookup in each of these tables
2127 route_to_dst = VppIpRoute(self, "1::1", 128,
2131 route_to_src = VppIpRoute(
2136 type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)])
2138 route_to_dst.add_vpp_config()
2139 route_to_src.add_vpp_config()
2142 # packets to these destination are dropped, since they'll
2143 # hit the respective default routes in the second table
2145 p_dst = (Ether(src=self.pg0.remote_mac,
2146 dst=self.pg0.local_mac) /
2147 IPv6(src="5::5", dst="1::1") /
2148 inet6.TCP(sport=1234, dport=1234) /
2150 p_src = (Ether(src=self.pg0.remote_mac,
2151 dst=self.pg0.local_mac) /
2152 IPv6(src="2::2", dst="1::2") /
2153 inet6.TCP(sport=1234, dport=1234) /
2155 pkts_dst = p_dst * 257
2156 pkts_src = p_src * 257
2158 self.send_and_assert_no_replies(self.pg0, pkts_dst,
2160 self.send_and_assert_no_replies(self.pg0, pkts_src,
2164 # add a route in the dst table to forward via pg1
2166 route_in_dst = VppIpRoute(self, "1::1", 128,
2167 [VppRoutePath(self.pg1.remote_ip6,
2168 self.pg1.sw_if_index)],
2170 route_in_dst.add_vpp_config()
2172 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2175 # add a route in the src table to forward via pg2
2177 route_in_src = VppIpRoute(self, "2::2", 128,
2178 [VppRoutePath(self.pg2.remote_ip6,
2179 self.pg2.sw_if_index)],
2181 route_in_src.add_vpp_config()
2182 self.send_and_expect(self.pg0, pkts_src, self.pg2)
2185 # loop in the lookup DP
2187 route_loop = VppIpRoute(self, "3::3", 128,
2190 route_loop.add_vpp_config()
2192 p_l = (Ether(src=self.pg0.remote_mac,
2193 dst=self.pg0.local_mac) /
2194 IPv6(src="3::4", dst="3::3") /
2195 inet6.TCP(sport=1234, dport=1234) /
2198 self.send_and_assert_no_replies(self.pg0, p_l * 257,
2202 class TestIP6Input(VppTestCase):
2203 """ IPv6 Input Exception Test Cases """
2206 def setUpClass(cls):
2207 super(TestIP6Input, cls).setUpClass()
2210 def tearDownClass(cls):
2211 super(TestIP6Input, cls).tearDownClass()
2214 super(TestIP6Input, self).setUp()
2216 self.create_pg_interfaces(range(2))
2218 for i in self.pg_interfaces:
2224 super(TestIP6Input, self).tearDown()
2225 for i in self.pg_interfaces:
2229 def test_ip_input_icmp_reply(self):
2230 """ IP6 Input Exception - Return ICMP (3,0) """
2232 # hop limit - ICMP replies
2234 p_version = (Ether(src=self.pg0.remote_mac,
2235 dst=self.pg0.local_mac) /
2236 IPv6(src=self.pg0.remote_ip6,
2237 dst=self.pg1.remote_ip6,
2239 inet6.UDP(sport=1234, dport=1234) /
2242 rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0)
2244 icmp = rx[ICMPv6TimeExceeded]
2246 # 0: "hop limit exceeded in transit",
2247 self.assertEqual((icmp.type, icmp.code), (3, 0))
2249 icmpv6_data = '\x0a' * 18
2251 all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2253 @parameterized.expand([
2254 # Name, src, dst, l4proto, msg, timeout
2255 ("src='iface', dst='iface'", None, None,
2256 inet6.UDP(sport=1234, dport=1234), "funky version", None),
2257 ("src='All 0's', dst='iface'", all_0s, None,
2258 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2259 ("src='iface', dst='All 0's'", None, all_0s,
2260 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2261 ("src='All 1's', dst='iface'", all_1s, None,
2262 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2263 ("src='iface', dst='All 1's'", None, all_1s,
2264 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2265 ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2266 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2269 def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2271 self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2273 p_version = (Ether(src=self.pg0.remote_mac,
2274 dst=self.pg0.local_mac) /
2275 IPv6(src=src or self.pg0.remote_ip6,
2276 dst=dst or self.pg1.remote_ip6,
2281 self.send_and_assert_no_replies(self.pg0, p_version * NUM_PKTS,
2285 def test_hop_by_hop(self):
2286 """ Hop-by-hop header test """
2288 p = (Ether(src=self.pg0.remote_mac,
2289 dst=self.pg0.local_mac) /
2290 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
2291 IPv6ExtHdrHopByHop() /
2292 inet6.UDP(sport=1234, dport=1234) /
2295 self.pg0.add_stream(p)
2296 self.pg_enable_capture(self.pg_interfaces)
2299 if __name__ == '__main__':
2300 unittest.main(testRunner=VppTestRunner)