6 from parameterized import parameterized
7 import scapy.layers.inet6 as inet6
8 from scapy.contrib.mpls import MPLS
9 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
10 ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
11 ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
12 ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply
13 from scapy.layers.l2 import Ether, Dot1Q
14 from scapy.packet import Raw
15 from scapy.utils import inet_pton, inet_ntop
16 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
20 from framework import VppTestCase, VppTestRunner
21 from util import ppp, ip6_normalize
22 from vpp_ip import DpoProto
23 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
24 VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
25 VppMplsRoute, VppMplsTable, VppIpTable
26 from vpp_neighbor import find_nbr, VppNeighbor
27 from vpp_pg_interface import is_ipv6_misc
28 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
29 from ipaddress import IPv6Network, IPv4Network
31 AF_INET6 = socket.AF_INET6
35 euid = in6_mactoifaceid(mac)
36 addr = "fe80::" + euid
40 class TestIPv6ND(VppTestCase):
41 def validate_ra(self, intf, rx, dst_ip=None):
43 dst_ip = intf.remote_ip6
45 # unicasted packets must come to the unicast mac
46 self.assertEqual(rx[Ether].dst, intf.remote_mac)
48 # and from the router's MAC
49 self.assertEqual(rx[Ether].src, intf.local_mac)
51 # the rx'd RA should be addressed to the sender's source
52 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
53 self.assertEqual(in6_ptop(rx[IPv6].dst),
56 # and come from the router's link local
57 self.assertTrue(in6_islladdr(rx[IPv6].src))
58 self.assertEqual(in6_ptop(rx[IPv6].src),
59 in6_ptop(mk_ll_addr(intf.local_mac)))
61 def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
63 dst_ip = intf.remote_ip6
65 dst_ip = intf.local_ip6
67 # unicasted packets must come to the unicast mac
68 self.assertEqual(rx[Ether].dst, intf.remote_mac)
70 # and from the router's MAC
71 self.assertEqual(rx[Ether].src, intf.local_mac)
73 # the rx'd NA should be addressed to the sender's source
74 self.assertTrue(rx.haslayer(ICMPv6ND_NA))
75 self.assertEqual(in6_ptop(rx[IPv6].dst),
78 # and come from the target address
80 in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
82 # Dest link-layer options should have the router's MAC
83 dll = rx[ICMPv6NDOptDstLLAddr]
84 self.assertEqual(dll.lladdr, intf.local_mac)
86 def validate_ns(self, intf, rx, tgt_ip):
87 nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
88 dst_ip = inet_ntop(AF_INET6, nsma)
91 self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
93 # and from the router's MAC
94 self.assertEqual(rx[Ether].src, intf.local_mac)
96 # the rx'd NS should be addressed to an mcast address
97 # derived from the target address
99 in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
101 # expect the tgt IP in the NS header
103 self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
105 # packet is from the router's local address
107 in6_ptop(rx[IPv6].src), intf.local_ip6)
109 # Src link-layer options should have the router's MAC
110 sll = rx[ICMPv6NDOptSrcLLAddr]
111 self.assertEqual(sll.lladdr, intf.local_mac)
113 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
114 filter_out_fn=is_ipv6_misc):
115 intf.add_stream(pkts)
116 self.pg_enable_capture(self.pg_interfaces)
118 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
120 self.assertEqual(len(rx), 1)
122 self.validate_ra(intf, rx, dst_ip)
124 def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
126 filter_out_fn=is_ipv6_misc):
127 intf.add_stream(pkts)
128 self.pg_enable_capture(self.pg_interfaces)
130 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
132 self.assertEqual(len(rx), 1)
134 self.validate_na(intf, rx, dst_ip, tgt_ip)
136 def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
137 filter_out_fn=is_ipv6_misc):
138 tx_intf.add_stream(pkts)
139 self.pg_enable_capture(self.pg_interfaces)
141 rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
143 self.assertEqual(len(rx), 1)
145 self.validate_ns(rx_intf, rx, tgt_ip)
147 def verify_ip(self, rx, smac, dmac, sip, dip):
149 self.assertEqual(ether.dst, dmac)
150 self.assertEqual(ether.src, smac)
153 self.assertEqual(ip.src, sip)
154 self.assertEqual(ip.dst, dip)
157 class TestIPv6(TestIPv6ND):
158 """ IPv6 Test Case """
162 super(TestIPv6, cls).setUpClass()
166 Perform test setup before test case.
169 - create 3 pg interfaces
170 - untagged pg0 interface
171 - Dot1Q subinterface on pg1
172 - Dot1AD subinterface on pg2
174 - put it into UP state
176 - resolve neighbor address using NDP
177 - configure 200 fib entries
179 :ivar list interfaces: pg interfaces and subinterfaces.
180 :ivar dict flows: IPv4 packet flows in test.
182 *TODO:* Create AD sub interface
184 super(TestIPv6, self).setUp()
186 # create 3 pg interfaces
187 self.create_pg_interfaces(range(3))
189 # create 2 subinterfaces for p1 and pg2
190 self.sub_interfaces = [
191 VppDot1QSubint(self, self.pg1, 100),
192 VppDot1QSubint(self, self.pg2, 200)
193 # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
196 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
198 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
199 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
200 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
203 self.pg_if_packet_sizes = [64, 1500, 9020]
205 self.interfaces = list(self.pg_interfaces)
206 self.interfaces.extend(self.sub_interfaces)
208 # setup all interfaces
209 for i in self.interfaces:
214 # config 2M FIB entries
215 self.config_fib_entries(200)
218 """Run standard test teardown and log ``show ip6 neighbors``."""
219 for i in self.interfaces:
223 for i in self.sub_interfaces:
224 i.remove_vpp_config()
226 super(TestIPv6, self).tearDown()
227 if not self.vpp_dead:
228 self.logger.info(self.vapi.cli("show ip6 neighbors"))
229 # info(self.vapi.cli("show ip6 fib")) # many entries
231 def config_fib_entries(self, count):
232 """For each interface add to the FIB table *count* routes to
233 "fd02::1/128" destination with interface's local address as next-hop
236 :param int count: Number of FIB entries.
238 - *TODO:* check if the next-hop address shouldn't be remote address
239 instead of local address.
241 n_int = len(self.interfaces)
244 dest_addr = inet_pton(AF_INET6, "fd02::1")
246 for i in self.interfaces:
247 next_hop_address = i.local_ip6n
248 for j in range(count / n_int):
249 self.vapi.ip_add_del_route(
250 dest_addr, dest_addr_len, next_hop_address, is_ipv6=1)
252 if counter / count * 100 > percent:
253 self.logger.info("Configure %d FIB entries .. %d%% done" %
257 def modify_packet(self, src_if, packet_size, pkt):
258 """Add load, set destination IP and extend packet to required packet
259 size for defined interface.
261 :param VppInterface src_if: Interface to create packet for.
262 :param int packet_size: Required packet size.
263 :param Scapy pkt: Packet to be modified.
265 dst_if_idx = packet_size / 10 % 2
266 dst_if = self.flows[src_if][dst_if_idx]
267 info = self.create_packet_info(src_if, dst_if)
268 payload = self.info_to_payload(info)
269 p = pkt / Raw(payload)
270 p[IPv6].dst = dst_if.remote_ip6
272 if isinstance(src_if, VppSubInterface):
273 p = src_if.add_dot1_layer(p)
274 self.extend_packet(p, packet_size)
278 def create_stream(self, src_if):
279 """Create input packet stream for defined interface.
281 :param VppInterface src_if: Interface to create packet stream for.
283 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
284 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
285 IPv6(src=src_if.remote_ip6) /
286 inet6.UDP(sport=1234, dport=1234))
288 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
289 for i in moves.range(self.pg_if_packet_sizes[0],
290 self.pg_if_packet_sizes[1], 10)]
291 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
292 for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
293 self.pg_if_packet_sizes[2] + hdr_ext,
299 def verify_capture(self, dst_if, capture):
300 """Verify captured input packet stream for defined interface.
302 :param VppInterface dst_if: Interface to verify captured packet stream
304 :param list capture: Captured packet stream.
306 self.logger.info("Verifying capture on interface %s" % dst_if.name)
308 for i in self.interfaces:
309 last_info[i.sw_if_index] = None
311 dst_sw_if_index = dst_if.sw_if_index
312 if hasattr(dst_if, 'parent'):
314 for packet in capture:
316 # Check VLAN tags and Ethernet header
317 packet = dst_if.remove_dot1_layer(packet)
318 self.assertTrue(Dot1Q not in packet)
321 udp = packet[inet6.UDP]
322 payload_info = self.payload_to_info(str(packet[Raw]))
323 packet_index = payload_info.index
324 self.assertEqual(payload_info.dst, dst_sw_if_index)
326 "Got packet on port %s: src=%u (id=%u)" %
327 (dst_if.name, payload_info.src, packet_index))
328 next_info = self.get_next_packet_info_for_interface2(
329 payload_info.src, dst_sw_if_index,
330 last_info[payload_info.src])
331 last_info[payload_info.src] = next_info
332 self.assertTrue(next_info is not None)
333 self.assertEqual(packet_index, next_info.index)
334 saved_packet = next_info.data
335 # Check standard fields
337 ip.src, saved_packet[IPv6].src)
339 ip.dst, saved_packet[IPv6].dst)
341 udp.sport, saved_packet[inet6.UDP].sport)
343 udp.dport, saved_packet[inet6.UDP].dport)
345 self.logger.error(ppp("Unexpected or invalid packet:", packet))
347 for i in self.interfaces:
348 remaining_packet = self.get_next_packet_info_for_interface2(
349 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
350 self.assertTrue(remaining_packet is None,
351 "Interface %s: Packet expected from interface %s "
352 "didn't arrive" % (dst_if.name, i.name))
358 - Create IPv6 stream for pg0 interface
359 - Create IPv6 tagged streams for pg1's and pg2's subinterface.
360 - Send and verify received packets on each interface.
363 pkts = self.create_stream(self.pg0)
364 self.pg0.add_stream(pkts)
366 for i in self.sub_interfaces:
367 pkts = self.create_stream(i)
368 i.parent.add_stream(pkts)
370 self.pg_enable_capture(self.pg_interfaces)
373 pkts = self.pg0.get_capture()
374 self.verify_capture(self.pg0, pkts)
376 for i in self.sub_interfaces:
377 pkts = i.parent.get_capture()
378 self.verify_capture(i, pkts)
381 """ IPv6 Neighbour Solicitation Exceptions
384 - Send an NS Sourced from an address not covered by the link sub-net
385 - Send an NS to an mcast address the router has not joined
386 - Send NS for a target address the router does not onn.
390 # An NS from a non link source address
392 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
393 d = inet_ntop(AF_INET6, nsma)
395 p = (Ether(dst=in6_getnsmac(nsma)) /
396 IPv6(dst=d, src="2002::2") /
397 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
398 ICMPv6NDOptSrcLLAddr(
399 lladdr=self.pg0.remote_mac))
402 self.send_and_assert_no_replies(
404 "No response to NS source by address not on sub-net")
407 # An NS for sent to a solicited mcast group the router is
408 # not a member of FAILS
411 nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
412 d = inet_ntop(AF_INET6, nsma)
414 p = (Ether(dst=in6_getnsmac(nsma)) /
415 IPv6(dst=d, src=self.pg0.remote_ip6) /
416 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
417 ICMPv6NDOptSrcLLAddr(
418 lladdr=self.pg0.remote_mac))
421 self.send_and_assert_no_replies(
423 "No response to NS sent to unjoined mcast address")
426 # An NS whose target address is one the router does not own
428 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
429 d = inet_ntop(AF_INET6, nsma)
431 p = (Ether(dst=in6_getnsmac(nsma)) /
432 IPv6(dst=d, src=self.pg0.remote_ip6) /
433 ICMPv6ND_NS(tgt="fd::ffff") /
434 ICMPv6NDOptSrcLLAddr(
435 lladdr=self.pg0.remote_mac))
438 self.send_and_assert_no_replies(self.pg0, pkts,
439 "No response to NS for unknown target")
442 # A neighbor entry that has no associated FIB-entry
444 self.pg0.generate_remote_hosts(4)
445 nd_entry = VppNeighbor(self,
446 self.pg0.sw_if_index,
447 self.pg0.remote_hosts[2].mac,
448 self.pg0.remote_hosts[2].ip6,
450 nd_entry.add_vpp_config()
453 # check we have the neighbor, but no route
455 self.assertTrue(find_nbr(self,
456 self.pg0.sw_if_index,
457 self.pg0._remote_hosts[2].ip6))
458 self.assertFalse(find_route(self,
459 self.pg0._remote_hosts[2].ip6,
464 # send an NS from a link local address to the interface's global
467 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
469 dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
470 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
471 ICMPv6NDOptSrcLLAddr(
472 lladdr=self.pg0.remote_mac))
474 self.send_and_expect_na(self.pg0, p,
475 "NS from link-local",
476 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
477 tgt_ip=self.pg0.local_ip6)
480 # we should have learned an ND entry for the peer's link-local
481 # but not inserted a route to it in the FIB
483 self.assertTrue(find_nbr(self,
484 self.pg0.sw_if_index,
485 self.pg0._remote_hosts[2].ip6_ll))
486 self.assertFalse(find_route(self,
487 self.pg0._remote_hosts[2].ip6_ll,
492 # An NS to the router's own Link-local
494 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
496 dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
497 ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
498 ICMPv6NDOptSrcLLAddr(
499 lladdr=self.pg0.remote_mac))
501 self.send_and_expect_na(self.pg0, p,
502 "NS to/from link-local",
503 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
504 tgt_ip=self.pg0.local_ip6_ll)
507 # we should have learned an ND entry for the peer's link-local
508 # but not inserted a route to it in the FIB
510 self.assertTrue(find_nbr(self,
511 self.pg0.sw_if_index,
512 self.pg0._remote_hosts[3].ip6_ll))
513 self.assertFalse(find_route(self,
514 self.pg0._remote_hosts[3].ip6_ll,
518 def test_ns_duplicates(self):
522 # Generate some hosts on the LAN
524 self.pg1.generate_remote_hosts(3)
527 # Add host 1 on pg1 and pg2
529 ns_pg1 = VppNeighbor(self,
530 self.pg1.sw_if_index,
531 self.pg1.remote_hosts[1].mac,
532 self.pg1.remote_hosts[1].ip6)
533 ns_pg1.add_vpp_config()
534 ns_pg2 = VppNeighbor(self,
535 self.pg2.sw_if_index,
537 self.pg1.remote_hosts[1].ip6)
538 ns_pg2.add_vpp_config()
541 # IP packet destined for pg1 remote host arrives on pg1 again.
543 p = (Ether(dst=self.pg0.local_mac,
544 src=self.pg0.remote_mac) /
545 IPv6(src=self.pg0.remote_ip6,
546 dst=self.pg1.remote_hosts[1].ip6) /
547 inet6.UDP(sport=1234, dport=1234) /
550 self.pg0.add_stream(p)
551 self.pg_enable_capture(self.pg_interfaces)
554 rx1 = self.pg1.get_capture(1)
556 self.verify_ip(rx1[0],
558 self.pg1.remote_hosts[1].mac,
560 self.pg1.remote_hosts[1].ip6)
563 # remove the duplicate on pg1
564 # packet stream shoud generate NSs out of pg1
566 ns_pg1.remove_vpp_config()
568 self.send_and_expect_ns(self.pg0, self.pg1,
569 p, self.pg1.remote_hosts[1].ip6)
574 ns_pg1.add_vpp_config()
576 self.pg0.add_stream(p)
577 self.pg_enable_capture(self.pg_interfaces)
580 rx1 = self.pg1.get_capture(1)
582 self.verify_ip(rx1[0],
584 self.pg1.remote_hosts[1].mac,
586 self.pg1.remote_hosts[1].ip6)
588 def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
590 dst_ip = intf.remote_ip6
592 # unicasted packets must come to the unicast mac
593 self.assertEqual(rx[Ether].dst, intf.remote_mac)
595 # and from the router's MAC
596 self.assertEqual(rx[Ether].src, intf.local_mac)
598 # the rx'd RA should be addressed to the sender's source
599 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
600 self.assertEqual(in6_ptop(rx[IPv6].dst),
603 # and come from the router's link local
604 self.assertTrue(in6_islladdr(rx[IPv6].src))
605 self.assertEqual(in6_ptop(rx[IPv6].src),
606 in6_ptop(mk_ll_addr(intf.local_mac)))
608 # it should contain the links MTU
610 self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
612 # it should contain the source's link layer address option
613 sll = ra[ICMPv6NDOptSrcLLAddr]
614 self.assertEqual(sll.lladdr, intf.local_mac)
617 # the RA should not contain prefix information
618 self.assertFalse(ra.haslayer(
619 ICMPv6NDOptPrefixInfo))
621 raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
623 # the options are nested in the scapy packet in way that i cannot
624 # decipher how to decode. this 1st layer of option always returns
625 # nested classes, so a direct obj1=obj2 comparison always fails.
626 # however, the getlayer(.., 2) does give one instnace.
627 # so we cheat here and construct a new opt instnace for comparison
628 rd = ICMPv6NDOptPrefixInfo(
629 prefixlen=raos.prefixlen,
633 if type(pi_opt) is list:
634 for ii in range(len(pi_opt)):
635 self.assertEqual(pi_opt[ii], rd)
637 ICMPv6NDOptPrefixInfo, ii + 2)
639 self.assertEqual(pi_opt, raos)
641 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
642 filter_out_fn=is_ipv6_misc,
644 intf.add_stream(pkts)
645 self.pg_enable_capture(self.pg_interfaces)
647 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
649 self.assertEqual(len(rx), 1)
651 self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
654 """ IPv6 Router Solicitation Exceptions
660 # Before we begin change the IPv6 RA responses to use the unicast
661 # address - that way we will not confuse them with the periodic
662 # RAs which go to the mcast address
663 # Sit and wait for the first periodic RA.
667 self.pg0.ip6_ra_config(send_unicast=1)
670 # An RS from a link source address
671 # - expect an RA in return
673 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
675 dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
678 self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
681 # For the next RS sent the RA should be rate limited
683 self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
686 # When we reconfiure the IPv6 RA config, we reset the RA rate limiting,
687 # so we need to do this before each test below so as not to drop
688 # packets for rate limiting reasons. Test this works here.
690 self.pg0.ip6_ra_config(send_unicast=1)
691 self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
694 # An RS sent from a non-link local source
696 self.pg0.ip6_ra_config(send_unicast=1)
697 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
698 IPv6(dst=self.pg0.local_ip6,
702 self.send_and_assert_no_replies(self.pg0, pkts,
703 "RS from non-link source")
706 # Source an RS from a link local address
708 self.pg0.ip6_ra_config(send_unicast=1)
709 ll = mk_ll_addr(self.pg0.remote_mac)
710 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
711 IPv6(dst=self.pg0.local_ip6, src=ll) /
714 self.send_and_expect_ra(self.pg0, pkts,
715 "RS sourced from link-local",
719 # Send the RS multicast
721 self.pg0.ip6_ra_config(send_unicast=1)
722 dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
723 ll = mk_ll_addr(self.pg0.remote_mac)
724 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
725 IPv6(dst="ff02::2", src=ll) /
728 self.send_and_expect_ra(self.pg0, pkts,
729 "RS sourced from link-local",
733 # Source from the unspecified address ::. This happens when the RS
734 # is sent before the host has a configured address/sub-net,
735 # i.e. auto-config. Since the sender has no IP address, the reply
736 # comes back mcast - so the capture needs to not filter this.
737 # If we happen to pick up the periodic RA at this point then so be it,
740 self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
741 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
742 IPv6(dst="ff02::2", src="::") /
745 self.send_and_expect_ra(self.pg0, pkts,
746 "RS sourced from unspecified",
751 # Configure The RA to announce the links prefix
753 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
754 self.pg0.local_ip6_prefix_len)
757 # RAs should now contain the prefix information option
759 opt = ICMPv6NDOptPrefixInfo(
760 prefixlen=self.pg0.local_ip6_prefix_len,
761 prefix=self.pg0.local_ip6,
765 self.pg0.ip6_ra_config(send_unicast=1)
766 ll = mk_ll_addr(self.pg0.remote_mac)
767 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
768 IPv6(dst=self.pg0.local_ip6, src=ll) /
770 self.send_and_expect_ra(self.pg0, p,
771 "RA with prefix-info",
776 # Change the prefix info to not off-link
779 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
780 self.pg0.local_ip6_prefix_len,
783 opt = ICMPv6NDOptPrefixInfo(
784 prefixlen=self.pg0.local_ip6_prefix_len,
785 prefix=self.pg0.local_ip6,
789 self.pg0.ip6_ra_config(send_unicast=1)
790 self.send_and_expect_ra(self.pg0, p,
791 "RA with Prefix info with L-flag=0",
796 # Change the prefix info to not off-link, no-autoconfig
797 # L and A flag are clear in the advert
799 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
800 self.pg0.local_ip6_prefix_len,
804 opt = ICMPv6NDOptPrefixInfo(
805 prefixlen=self.pg0.local_ip6_prefix_len,
806 prefix=self.pg0.local_ip6,
810 self.pg0.ip6_ra_config(send_unicast=1)
811 self.send_and_expect_ra(self.pg0, p,
812 "RA with Prefix info with A & L-flag=0",
817 # Change the flag settings back to the defaults
818 # L and A flag are set in the advert
820 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
821 self.pg0.local_ip6_prefix_len)
823 opt = ICMPv6NDOptPrefixInfo(
824 prefixlen=self.pg0.local_ip6_prefix_len,
825 prefix=self.pg0.local_ip6,
829 self.pg0.ip6_ra_config(send_unicast=1)
830 self.send_and_expect_ra(self.pg0, p,
831 "RA with Prefix info",
836 # Change the prefix info to not off-link, no-autoconfig
837 # L and A flag are clear in the advert
839 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
840 self.pg0.local_ip6_prefix_len,
844 opt = ICMPv6NDOptPrefixInfo(
845 prefixlen=self.pg0.local_ip6_prefix_len,
846 prefix=self.pg0.local_ip6,
850 self.pg0.ip6_ra_config(send_unicast=1)
851 self.send_and_expect_ra(self.pg0, p,
852 "RA with Prefix info with A & L-flag=0",
857 # Use the reset to defults option to revert to defaults
858 # L and A flag are clear in the advert
860 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
861 self.pg0.local_ip6_prefix_len,
864 opt = ICMPv6NDOptPrefixInfo(
865 prefixlen=self.pg0.local_ip6_prefix_len,
866 prefix=self.pg0.local_ip6,
870 self.pg0.ip6_ra_config(send_unicast=1)
871 self.send_and_expect_ra(self.pg0, p,
872 "RA with Prefix reverted to defaults",
877 # Advertise Another prefix. With no L-flag/A-flag
879 self.pg0.ip6_ra_prefix(self.pg1.local_ip6,
880 self.pg1.local_ip6_prefix_len,
884 opt = [ICMPv6NDOptPrefixInfo(
885 prefixlen=self.pg0.local_ip6_prefix_len,
886 prefix=self.pg0.local_ip6,
889 ICMPv6NDOptPrefixInfo(
890 prefixlen=self.pg1.local_ip6_prefix_len,
891 prefix=self.pg1.local_ip6,
895 self.pg0.ip6_ra_config(send_unicast=1)
896 ll = mk_ll_addr(self.pg0.remote_mac)
897 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
898 IPv6(dst=self.pg0.local_ip6, src=ll) /
900 self.send_and_expect_ra(self.pg0, p,
901 "RA with multiple Prefix infos",
906 # Remove the first refix-info - expect the second is still in the
909 self.pg0.ip6_ra_prefix(self.pg0.local_ip6,
910 self.pg0.local_ip6_prefix_len,
913 opt = ICMPv6NDOptPrefixInfo(
914 prefixlen=self.pg1.local_ip6_prefix_len,
915 prefix=self.pg1.local_ip6,
919 self.pg0.ip6_ra_config(send_unicast=1)
920 self.send_and_expect_ra(self.pg0, p,
921 "RA with Prefix reverted to defaults",
926 # Remove the second prefix-info - expect no prefix-info i nthe adverts
928 self.pg0.ip6_ra_prefix(self.pg1.local_ip6,
929 self.pg1.local_ip6_prefix_len,
932 self.pg0.ip6_ra_config(send_unicast=1)
933 self.send_and_expect_ra(self.pg0, p,
934 "RA with Prefix reverted to defaults",
938 # Reset the periodic advertisements back to default values
940 self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
943 class TestICMPv6Echo(VppTestCase):
944 """ ICMPv6 Echo Test Case """
947 super(TestICMPv6Echo, self).setUp()
949 # create 1 pg interface
950 self.create_pg_interfaces(range(1))
952 for i in self.pg_interfaces:
958 super(TestICMPv6Echo, self).tearDown()
959 for i in self.pg_interfaces:
964 def test_icmpv6_echo(self):
965 """ VPP replies to ICMPv6 Echo Request
969 - Receive ICMPv6 Echo Request message on pg0 interface.
970 - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
975 icmpv6_data = '\x0a' * 18
976 p_echo_request = (Ether(src=self.pg0.remote_mac,
977 dst=self.pg0.local_mac) /
978 IPv6(src=self.pg0.remote_ip6,
979 dst=self.pg0.local_ip6) /
985 self.pg0.add_stream(p_echo_request)
986 self.pg_enable_capture(self.pg_interfaces)
989 rx = self.pg0.get_capture(1)
993 icmpv6 = rx[ICMPv6EchoReply]
995 self.assertEqual(ether.src, self.pg0.local_mac)
996 self.assertEqual(ether.dst, self.pg0.remote_mac)
998 self.assertEqual(ipv6.src, self.pg0.local_ip6)
999 self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1002 icmp6types[icmpv6.type], "Echo Reply")
1003 self.assertEqual(icmpv6.id, icmpv6_id)
1004 self.assertEqual(icmpv6.seq, icmpv6_seq)
1005 self.assertEqual(icmpv6.data, icmpv6_data)
1008 class TestIPv6RD(TestIPv6ND):
1009 """ IPv6 Router Discovery Test Case """
1012 def setUpClass(cls):
1013 super(TestIPv6RD, cls).setUpClass()
1016 super(TestIPv6RD, self).setUp()
1018 # create 2 pg interfaces
1019 self.create_pg_interfaces(range(2))
1021 self.interfaces = list(self.pg_interfaces)
1023 # setup all interfaces
1024 for i in self.interfaces:
1029 for i in self.interfaces:
1032 super(TestIPv6RD, self).tearDown()
1034 def test_rd_send_router_solicitation(self):
1035 """ Verify router solicitation packets """
1038 self.pg_enable_capture(self.pg_interfaces)
1040 self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1042 rx_list = self.pg1.get_capture(count, timeout=3)
1043 self.assertEqual(len(rx_list), count)
1044 for packet in rx_list:
1045 self.assertEqual(packet.haslayer(IPv6), 1)
1046 self.assertEqual(packet[IPv6].haslayer(
1048 dst = ip6_normalize(packet[IPv6].dst)
1049 dst2 = ip6_normalize("ff02::2")
1050 self.assert_equal(dst, dst2)
1051 src = ip6_normalize(packet[IPv6].src)
1052 src2 = ip6_normalize(self.pg1.local_ip6_ll)
1053 self.assert_equal(src, src2)
1055 bool(packet[ICMPv6ND_RS].haslayer(
1056 ICMPv6NDOptSrcLLAddr)))
1058 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1061 def verify_prefix_info(self, reported_prefix, prefix_option):
1062 prefix = IPv6Network(
1063 unicode(prefix_option.getfieldval("prefix") +
1065 str(prefix_option.getfieldval("prefixlen"))),
1067 self.assert_equal(reported_prefix.prefix.network_address,
1068 prefix.network_address)
1069 L = prefix_option.getfieldval("L")
1070 A = prefix_option.getfieldval("A")
1071 option_flags = (L << 7) | (A << 6)
1072 self.assert_equal(reported_prefix.flags, option_flags)
1073 self.assert_equal(reported_prefix.valid_time,
1074 prefix_option.getfieldval("validlifetime"))
1075 self.assert_equal(reported_prefix.preferred_time,
1076 prefix_option.getfieldval("preferredlifetime"))
1078 def test_rd_receive_router_advertisement(self):
1079 """ Verify events triggered by received RA packets """
1081 self.vapi.want_ip6_ra_events()
1083 prefix_info_1 = ICMPv6NDOptPrefixInfo(
1087 preferredlifetime=500,
1092 prefix_info_2 = ICMPv6NDOptPrefixInfo(
1096 preferredlifetime=1000,
1101 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1102 IPv6(dst=self.pg1.local_ip6_ll,
1103 src=mk_ll_addr(self.pg1.remote_mac)) /
1107 self.pg1.add_stream([p])
1110 ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1112 self.assert_equal(ev.current_hop_limit, 0)
1113 self.assert_equal(ev.flags, 8)
1114 self.assert_equal(ev.router_lifetime_in_sec, 1800)
1115 self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1117 ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1119 self.assert_equal(ev.n_prefixes, 2)
1121 self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1122 self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1125 class TestIPv6RDControlPlane(TestIPv6ND):
1126 """ IPv6 Router Discovery Control Plane Test Case """
1129 def setUpClass(cls):
1130 super(TestIPv6RDControlPlane, cls).setUpClass()
1133 super(TestIPv6RDControlPlane, self).setUp()
1135 # create 1 pg interface
1136 self.create_pg_interfaces(range(1))
1138 self.interfaces = list(self.pg_interfaces)
1140 # setup all interfaces
1141 for i in self.interfaces:
1146 super(TestIPv6RDControlPlane, self).tearDown()
1149 def create_ra_packet(pg, routerlifetime=None):
1150 src_ip = pg.remote_ip6_ll
1151 dst_ip = pg.local_ip6
1152 if routerlifetime is not None:
1153 ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1156 p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1157 IPv6(dst=dst_ip, src=src_ip) / ra)
1161 def get_default_routes(fib):
1164 if entry.address_length == 0:
1165 for path in entry.path:
1166 if path.sw_if_index != 0xFFFFFFFF:
1168 defaut_route['sw_if_index'] = path.sw_if_index
1169 defaut_route['next_hop'] = path.next_hop
1170 list.append(defaut_route)
1174 def get_interface_addresses(fib, pg):
1177 if entry.address_length == 128:
1178 path = entry.path[0]
1179 if path.sw_if_index == pg.sw_if_index:
1180 list.append(entry.address)
1184 """ Test handling of SLAAC addresses and default routes """
1186 fib = self.vapi.ip6_fib_dump()
1187 default_routes = self.get_default_routes(fib)
1188 initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1189 self.assertEqual(default_routes, [])
1190 router_address = self.pg0.remote_ip6n_ll
1192 self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1197 packet = (self.create_ra_packet(
1198 self.pg0) / ICMPv6NDOptPrefixInfo(
1202 preferredlifetime=2,
1205 ) / ICMPv6NDOptPrefixInfo(
1209 preferredlifetime=1000,
1213 self.pg0.add_stream([packet])
1218 fib = self.vapi.ip6_fib_dump()
1220 # check FIB for new address
1221 addresses = set(self.get_interface_addresses(fib, self.pg0))
1222 new_addresses = addresses.difference(initial_addresses)
1223 self.assertEqual(len(new_addresses), 1)
1224 prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1225 self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1227 # check FIB for new default route
1228 default_routes = self.get_default_routes(fib)
1229 self.assertEqual(len(default_routes), 1)
1230 dr = default_routes[0]
1231 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1232 self.assertEqual(dr['next_hop'], router_address)
1234 # send RA to delete default route
1235 packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1236 self.pg0.add_stream([packet])
1241 # check that default route is deleted
1242 fib = self.vapi.ip6_fib_dump()
1243 default_routes = self.get_default_routes(fib)
1244 self.assertEqual(len(default_routes), 0)
1249 packet = self.create_ra_packet(self.pg0)
1250 self.pg0.add_stream([packet])
1255 # check FIB for new default route
1256 fib = self.vapi.ip6_fib_dump()
1257 default_routes = self.get_default_routes(fib)
1258 self.assertEqual(len(default_routes), 1)
1259 dr = default_routes[0]
1260 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1261 self.assertEqual(dr['next_hop'], router_address)
1263 # send RA, updating router lifetime to 1s
1264 packet = self.create_ra_packet(self.pg0, 1)
1265 self.pg0.add_stream([packet])
1270 # check that default route still exists
1271 fib = self.vapi.ip6_fib_dump()
1272 default_routes = self.get_default_routes(fib)
1273 self.assertEqual(len(default_routes), 1)
1274 dr = default_routes[0]
1275 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1276 self.assertEqual(dr['next_hop'], router_address)
1280 # check that default route is deleted
1281 fib = self.vapi.ip6_fib_dump()
1282 default_routes = self.get_default_routes(fib)
1283 self.assertEqual(len(default_routes), 0)
1285 # check FIB still contains the SLAAC address
1286 addresses = set(self.get_interface_addresses(fib, self.pg0))
1287 new_addresses = addresses.difference(initial_addresses)
1288 self.assertEqual(len(new_addresses), 1)
1289 prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1290 self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1294 # check that SLAAC address is deleted
1295 fib = self.vapi.ip6_fib_dump()
1296 addresses = set(self.get_interface_addresses(fib, self.pg0))
1297 new_addresses = addresses.difference(initial_addresses)
1298 self.assertEqual(len(new_addresses), 0)
1301 class IPv6NDProxyTest(TestIPv6ND):
1302 """ IPv6 ND ProxyTest Case """
1305 super(IPv6NDProxyTest, self).setUp()
1307 # create 3 pg interfaces
1308 self.create_pg_interfaces(range(3))
1310 # pg0 is the master interface, with the configured subnet
1312 self.pg0.config_ip6()
1313 self.pg0.resolve_ndp()
1315 self.pg1.ip6_enable()
1316 self.pg2.ip6_enable()
1319 super(IPv6NDProxyTest, self).tearDown()
1321 def test_nd_proxy(self):
1322 """ IPv6 Proxy ND """
1325 # Generate some hosts in the subnet that we are proxying
1327 self.pg0.generate_remote_hosts(8)
1329 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1330 d = inet_ntop(AF_INET6, nsma)
1333 # Send an NS for one of those remote hosts on one of the proxy links
1334 # expect no response since it's from an address that is not
1335 # on the link that has the prefix configured
1337 ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1339 src=self.pg0._remote_hosts[2].ip6) /
1340 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1341 ICMPv6NDOptSrcLLAddr(
1342 lladdr=self.pg0._remote_hosts[2].mac))
1344 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1347 # Add proxy support for the host
1349 self.vapi.ip6_nd_proxy(
1350 inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1351 self.pg1.sw_if_index)
1354 # try that NS again. this time we expect an NA back
1356 self.send_and_expect_na(self.pg1, ns_pg1,
1357 "NS to proxy entry",
1358 dst_ip=self.pg0._remote_hosts[2].ip6,
1359 tgt_ip=self.pg0.local_ip6)
1362 # ... and that we have an entry in the ND cache
1364 self.assertTrue(find_nbr(self,
1365 self.pg1.sw_if_index,
1366 self.pg0._remote_hosts[2].ip6))
1369 # ... and we can route traffic to it
1371 t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1372 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1373 src=self.pg0.remote_ip6) /
1374 inet6.UDP(sport=10000, dport=20000) /
1377 self.pg0.add_stream(t)
1378 self.pg_enable_capture(self.pg_interfaces)
1380 rx = self.pg1.get_capture(1)
1383 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1384 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1386 self.assertEqual(rx[IPv6].src,
1388 self.assertEqual(rx[IPv6].dst,
1392 # Test we proxy for the host on the main interface
1394 ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1395 IPv6(dst=d, src=self.pg0.remote_ip6) /
1397 tgt=self.pg0._remote_hosts[2].ip6) /
1398 ICMPv6NDOptSrcLLAddr(
1399 lladdr=self.pg0.remote_mac))
1401 self.send_and_expect_na(self.pg0, ns_pg0,
1402 "NS to proxy entry on main",
1403 tgt_ip=self.pg0._remote_hosts[2].ip6,
1404 dst_ip=self.pg0.remote_ip6)
1407 # Setup and resolve proxy for another host on another interface
1409 ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1411 src=self.pg0._remote_hosts[3].ip6) /
1412 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1413 ICMPv6NDOptSrcLLAddr(
1414 lladdr=self.pg0._remote_hosts[2].mac))
1416 self.vapi.ip6_nd_proxy(
1417 inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1418 self.pg2.sw_if_index)
1420 self.send_and_expect_na(self.pg2, ns_pg2,
1421 "NS to proxy entry other interface",
1422 dst_ip=self.pg0._remote_hosts[3].ip6,
1423 tgt_ip=self.pg0.local_ip6)
1425 self.assertTrue(find_nbr(self,
1426 self.pg2.sw_if_index,
1427 self.pg0._remote_hosts[3].ip6))
1430 # hosts can communicate. pg2->pg1
1432 t2 = (Ether(dst=self.pg2.local_mac,
1433 src=self.pg0.remote_hosts[3].mac) /
1434 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1435 src=self.pg0._remote_hosts[3].ip6) /
1436 inet6.UDP(sport=10000, dport=20000) /
1439 self.pg2.add_stream(t2)
1440 self.pg_enable_capture(self.pg_interfaces)
1442 rx = self.pg1.get_capture(1)
1445 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1446 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1448 self.assertEqual(rx[IPv6].src,
1450 self.assertEqual(rx[IPv6].dst,
1454 # remove the proxy configs
1456 self.vapi.ip6_nd_proxy(
1457 inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1458 self.pg1.sw_if_index,
1460 self.vapi.ip6_nd_proxy(
1461 inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1462 self.pg2.sw_if_index,
1465 self.assertFalse(find_nbr(self,
1466 self.pg2.sw_if_index,
1467 self.pg0._remote_hosts[3].ip6))
1468 self.assertFalse(find_nbr(self,
1469 self.pg1.sw_if_index,
1470 self.pg0._remote_hosts[2].ip6))
1473 # no longer proxy-ing...
1475 self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1476 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1477 self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1480 # no longer forwarding. traffic generates NS out of the glean/main
1483 self.pg2.add_stream(t2)
1484 self.pg_enable_capture(self.pg_interfaces)
1487 rx = self.pg0.get_capture(1)
1489 self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1492 class TestIPNull(VppTestCase):
1493 """ IPv6 routes via NULL """
1496 super(TestIPNull, self).setUp()
1498 # create 2 pg interfaces
1499 self.create_pg_interfaces(range(1))
1501 for i in self.pg_interfaces:
1507 super(TestIPNull, self).tearDown()
1508 for i in self.pg_interfaces:
1512 def test_ip_null(self):
1513 """ IP NULL route """
1515 p = (Ether(src=self.pg0.remote_mac,
1516 dst=self.pg0.local_mac) /
1517 IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1518 inet6.UDP(sport=1234, dport=1234) /
1522 # A route via IP NULL that will reply with ICMP unreachables
1524 ip_unreach = VppIpRoute(self, "2001::", 64, [], is_unreach=1, is_ip6=1)
1525 ip_unreach.add_vpp_config()
1527 self.pg0.add_stream(p)
1528 self.pg_enable_capture(self.pg_interfaces)
1531 rx = self.pg0.get_capture(1)
1533 icmp = rx[ICMPv6DestUnreach]
1535 # 0 = "No route to destination"
1536 self.assertEqual(icmp.code, 0)
1538 # ICMP is rate limited. pause a bit
1542 # A route via IP NULL that will reply with ICMP prohibited
1544 ip_prohibit = VppIpRoute(self, "2001::1", 128, [],
1545 is_prohibit=1, is_ip6=1)
1546 ip_prohibit.add_vpp_config()
1548 self.pg0.add_stream(p)
1549 self.pg_enable_capture(self.pg_interfaces)
1552 rx = self.pg0.get_capture(1)
1554 icmp = rx[ICMPv6DestUnreach]
1556 # 1 = "Communication with destination administratively prohibited"
1557 self.assertEqual(icmp.code, 1)
1560 class TestIPDisabled(VppTestCase):
1561 """ IPv6 disabled """
1564 super(TestIPDisabled, self).setUp()
1566 # create 2 pg interfaces
1567 self.create_pg_interfaces(range(2))
1571 self.pg0.config_ip6()
1572 self.pg0.resolve_ndp()
1574 # PG 1 is not IP enabled
1578 super(TestIPDisabled, self).tearDown()
1579 for i in self.pg_interfaces:
1583 def test_ip_disabled(self):
1588 # one accepting interface, pg0, 2 forwarding interfaces
1590 route_ff_01 = VppIpMRoute(
1594 MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
1595 [VppMRoutePath(self.pg1.sw_if_index,
1596 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
1597 VppMRoutePath(self.pg0.sw_if_index,
1598 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
1600 route_ff_01.add_vpp_config()
1602 pu = (Ether(src=self.pg1.remote_mac,
1603 dst=self.pg1.local_mac) /
1604 IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1605 inet6.UDP(sport=1234, dport=1234) /
1607 pm = (Ether(src=self.pg1.remote_mac,
1608 dst=self.pg1.local_mac) /
1609 IPv6(src="2001::1", dst="ffef::1") /
1610 inet6.UDP(sport=1234, dport=1234) /
1614 # PG1 does not forward IP traffic
1616 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1617 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1622 self.pg1.config_ip6()
1625 # Now we get packets through
1627 self.pg1.add_stream(pu)
1628 self.pg_enable_capture(self.pg_interfaces)
1630 rx = self.pg0.get_capture(1)
1632 self.pg1.add_stream(pm)
1633 self.pg_enable_capture(self.pg_interfaces)
1635 rx = self.pg0.get_capture(1)
1640 self.pg1.unconfig_ip6()
1643 # PG1 does not forward IP traffic
1645 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1646 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1649 class TestIP6LoadBalance(VppTestCase):
1650 """ IPv6 Load-Balancing """
1653 super(TestIP6LoadBalance, self).setUp()
1655 self.create_pg_interfaces(range(5))
1657 mpls_tbl = VppMplsTable(self, 0)
1658 mpls_tbl.add_vpp_config()
1660 for i in self.pg_interfaces:
1667 for i in self.pg_interfaces:
1671 super(TestIP6LoadBalance, self).tearDown()
1673 def pg_send(self, input, pkts):
1674 self.vapi.cli("clear trace")
1675 input.add_stream(pkts)
1676 self.pg_enable_capture(self.pg_interfaces)
1679 def send_and_expect_load_balancing(self, input, pkts, outputs):
1680 self.pg_send(input, pkts)
1682 rx = oo._get_capture(1)
1683 self.assertNotEqual(0, len(rx))
1685 def send_and_expect_one_itf(self, input, pkts, itf):
1686 self.pg_send(input, pkts)
1687 rx = itf.get_capture(len(pkts))
1689 def test_ip6_load_balance(self):
1690 """ IPv6 Load-Balancing """
1693 # An array of packets that differ only in the destination port
1697 # - MPLS non-EOS with an entropy label
1701 port_mpls_neos_pkts = []
1705 # An array of packets that differ only in the source address
1710 for ii in range(65):
1712 IPv6(dst="3000::1", src="3000:1::1") /
1713 inet6.UDP(sport=1234, dport=1234 + ii) /
1715 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1716 dst=self.pg0.local_mac) /
1718 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1719 dst=self.pg0.local_mac) /
1720 MPLS(label=66, ttl=2) /
1722 port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1723 dst=self.pg0.local_mac) /
1724 MPLS(label=67, ttl=2) /
1725 MPLS(label=77, ttl=2) /
1727 port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1728 dst=self.pg0.local_mac) /
1729 MPLS(label=67, ttl=2) /
1730 MPLS(label=14, ttl=2) /
1731 MPLS(label=999, ttl=2) /
1734 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
1735 inet6.UDP(sport=1234, dport=1234) /
1737 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1738 dst=self.pg0.local_mac) /
1740 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1741 dst=self.pg0.local_mac) /
1742 MPLS(label=66, ttl=2) /
1746 # A route for the IP pacekts
1748 route_3000_1 = VppIpRoute(self, "3000::1", 128,
1749 [VppRoutePath(self.pg1.remote_ip6,
1750 self.pg1.sw_if_index,
1751 proto=DpoProto.DPO_PROTO_IP6),
1752 VppRoutePath(self.pg2.remote_ip6,
1753 self.pg2.sw_if_index,
1754 proto=DpoProto.DPO_PROTO_IP6)],
1756 route_3000_1.add_vpp_config()
1759 # a local-label for the EOS packets
1761 binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
1762 binding.add_vpp_config()
1765 # An MPLS route for the non-EOS packets
1767 route_67 = VppMplsRoute(self, 67, 0,
1768 [VppRoutePath(self.pg1.remote_ip6,
1769 self.pg1.sw_if_index,
1771 proto=DpoProto.DPO_PROTO_IP6),
1772 VppRoutePath(self.pg2.remote_ip6,
1773 self.pg2.sw_if_index,
1775 proto=DpoProto.DPO_PROTO_IP6)])
1776 route_67.add_vpp_config()
1779 # inject the packet on pg0 - expect load-balancing across the 2 paths
1780 # - since the default hash config is to use IP src,dst and port
1782 # We are not going to ensure equal amounts of packets across each link,
1783 # since the hash algorithm is statistical and therefore this can never
1784 # be guaranteed. But wuth 64 different packets we do expect some
1785 # balancing. So instead just ensure there is traffic on each link.
1787 self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
1788 [self.pg1, self.pg2])
1789 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1790 [self.pg1, self.pg2])
1791 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
1792 [self.pg1, self.pg2])
1793 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1794 [self.pg1, self.pg2])
1795 self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
1796 [self.pg1, self.pg2])
1799 # The packets with Entropy label in should not load-balance,
1800 # since the Entorpy value is fixed.
1802 self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
1805 # change the flow hash config so it's only IP src,dst
1806 # - now only the stream with differing source address will
1809 self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=0, dport=0)
1811 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1812 [self.pg1, self.pg2])
1813 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1814 [self.pg1, self.pg2])
1815 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
1818 # change the flow hash config back to defaults
1820 self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=1, dport=1)
1823 # Recursive prefixes
1824 # - testing that 2 stages of load-balancing occurs and there is no
1825 # polarisation (i.e. only 2 of 4 paths are used)
1830 for ii in range(257):
1831 port_pkts.append((Ether(src=self.pg0.remote_mac,
1832 dst=self.pg0.local_mac) /
1835 inet6.UDP(sport=1234,
1838 src_pkts.append((Ether(src=self.pg0.remote_mac,
1839 dst=self.pg0.local_mac) /
1841 src="4000:1::%d" % ii) /
1842 inet6.UDP(sport=1234, dport=1234) /
1845 route_3000_2 = VppIpRoute(self, "3000::2", 128,
1846 [VppRoutePath(self.pg3.remote_ip6,
1847 self.pg3.sw_if_index,
1848 proto=DpoProto.DPO_PROTO_IP6),
1849 VppRoutePath(self.pg4.remote_ip6,
1850 self.pg4.sw_if_index,
1851 proto=DpoProto.DPO_PROTO_IP6)],
1853 route_3000_2.add_vpp_config()
1855 route_4000_1 = VppIpRoute(self, "4000::1", 128,
1856 [VppRoutePath("3000::1",
1858 proto=DpoProto.DPO_PROTO_IP6),
1859 VppRoutePath("3000::2",
1861 proto=DpoProto.DPO_PROTO_IP6)],
1863 route_4000_1.add_vpp_config()
1866 # inject the packet on pg0 - expect load-balancing across all 4 paths
1868 self.vapi.cli("clear trace")
1869 self.send_and_expect_load_balancing(self.pg0, port_pkts,
1870 [self.pg1, self.pg2,
1871 self.pg3, self.pg4])
1872 self.send_and_expect_load_balancing(self.pg0, src_pkts,
1873 [self.pg1, self.pg2,
1874 self.pg3, self.pg4])
1877 # Recursive prefixes
1878 # - testing that 2 stages of load-balancing no choices
1882 for ii in range(257):
1883 port_pkts.append((Ether(src=self.pg0.remote_mac,
1884 dst=self.pg0.local_mac) /
1887 inet6.UDP(sport=1234,
1891 route_5000_2 = VppIpRoute(self, "5000::2", 128,
1892 [VppRoutePath(self.pg3.remote_ip6,
1893 self.pg3.sw_if_index,
1894 proto=DpoProto.DPO_PROTO_IP6)],
1896 route_5000_2.add_vpp_config()
1898 route_6000_1 = VppIpRoute(self, "6000::1", 128,
1899 [VppRoutePath("5000::2",
1901 proto=DpoProto.DPO_PROTO_IP6)],
1903 route_6000_1.add_vpp_config()
1906 # inject the packet on pg0 - expect load-balancing across all 4 paths
1908 self.vapi.cli("clear trace")
1909 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
1912 class TestIP6Punt(VppTestCase):
1913 """ IPv6 Punt Police/Redirect """
1916 super(TestIP6Punt, self).setUp()
1918 self.create_pg_interfaces(range(4))
1920 for i in self.pg_interfaces:
1926 super(TestIP6Punt, self).tearDown()
1927 for i in self.pg_interfaces:
1931 def test_ip_punt(self):
1932 """ IP6 punt police and redirect """
1934 p = (Ether(src=self.pg0.remote_mac,
1935 dst=self.pg0.local_mac) /
1936 IPv6(src=self.pg0.remote_ip6,
1937 dst=self.pg0.local_ip6) /
1938 inet6.TCP(sport=1234, dport=1234) /
1944 # Configure a punt redirect via pg1.
1946 nh_addr = self.pg1.remote_ip6
1947 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1948 self.pg1.sw_if_index,
1951 self.send_and_expect(self.pg0, pkts, self.pg1)
1956 policer = self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1958 self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
1960 self.vapi.cli("clear trace")
1961 self.pg0.add_stream(pkts)
1962 self.pg_enable_capture(self.pg_interfaces)
1966 # the number of packet recieved should be greater than 0,
1967 # but not equal to the number sent, since some were policed
1969 rx = self.pg1._get_capture(1)
1970 self.assertGreater(len(rx), 0)
1971 self.assertLess(len(rx), len(pkts))
1974 # remove the policer. back to full rx
1976 self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
1977 self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1978 rate_type=1, is_add=0)
1979 self.send_and_expect(self.pg0, pkts, self.pg1)
1982 # remove the redirect. expect full drop.
1984 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1985 self.pg1.sw_if_index,
1988 self.send_and_assert_no_replies(self.pg0, pkts,
1989 "IP no punt config")
1992 # Add a redirect that is not input port selective
1994 self.vapi.ip_punt_redirect(0xffffffff,
1995 self.pg1.sw_if_index,
1997 self.send_and_expect(self.pg0, pkts, self.pg1)
1999 self.vapi.ip_punt_redirect(0xffffffff,
2000 self.pg1.sw_if_index,
2004 def test_ip_punt_dump(self):
2005 """ IP6 punt redirect dump"""
2008 # Configure a punt redirects
2010 nh_addr = self.pg3.remote_ip6
2011 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2012 self.pg3.sw_if_index,
2014 self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
2015 self.pg3.sw_if_index,
2017 self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
2018 self.pg3.sw_if_index,
2022 # Dump pg0 punt redirects
2024 punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index,
2027 self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
2030 # Dump punt redirects for all interfaces
2032 punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2033 self.assertEqual(len(punts), 3)
2035 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2036 self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2037 self.assertEqual(str(punts[2].punt.nh), '::')
2040 class TestIPDeag(VppTestCase):
2041 """ IPv6 Deaggregate Routes """
2044 super(TestIPDeag, self).setUp()
2046 self.create_pg_interfaces(range(3))
2048 for i in self.pg_interfaces:
2054 super(TestIPDeag, self).tearDown()
2055 for i in self.pg_interfaces:
2059 def test_ip_deag(self):
2060 """ IP Deag Routes """
2063 # Create a table to be used for:
2064 # 1 - another destination address lookup
2065 # 2 - a source address lookup
2067 table_dst = VppIpTable(self, 1, is_ip6=1)
2068 table_src = VppIpTable(self, 2, is_ip6=1)
2069 table_dst.add_vpp_config()
2070 table_src.add_vpp_config()
2073 # Add a route in the default table to point to a deag/
2074 # second lookup in each of these tables
2076 route_to_dst = VppIpRoute(self, "1::1", 128,
2080 proto=DpoProto.DPO_PROTO_IP6)],
2082 route_to_src = VppIpRoute(self, "1::2", 128,
2087 proto=DpoProto.DPO_PROTO_IP6)],
2089 route_to_dst.add_vpp_config()
2090 route_to_src.add_vpp_config()
2093 # packets to these destination are dropped, since they'll
2094 # hit the respective default routes in the second table
2096 p_dst = (Ether(src=self.pg0.remote_mac,
2097 dst=self.pg0.local_mac) /
2098 IPv6(src="5::5", dst="1::1") /
2099 inet6.TCP(sport=1234, dport=1234) /
2101 p_src = (Ether(src=self.pg0.remote_mac,
2102 dst=self.pg0.local_mac) /
2103 IPv6(src="2::2", dst="1::2") /
2104 inet6.TCP(sport=1234, dport=1234) /
2106 pkts_dst = p_dst * 257
2107 pkts_src = p_src * 257
2109 self.send_and_assert_no_replies(self.pg0, pkts_dst,
2111 self.send_and_assert_no_replies(self.pg0, pkts_src,
2115 # add a route in the dst table to forward via pg1
2117 route_in_dst = VppIpRoute(self, "1::1", 128,
2118 [VppRoutePath(self.pg1.remote_ip6,
2119 self.pg1.sw_if_index,
2120 proto=DpoProto.DPO_PROTO_IP6)],
2123 route_in_dst.add_vpp_config()
2125 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2128 # add a route in the src table to forward via pg2
2130 route_in_src = VppIpRoute(self, "2::2", 128,
2131 [VppRoutePath(self.pg2.remote_ip6,
2132 self.pg2.sw_if_index,
2133 proto=DpoProto.DPO_PROTO_IP6)],
2136 route_in_src.add_vpp_config()
2137 self.send_and_expect(self.pg0, pkts_src, self.pg2)
2140 # loop in the lookup DP
2142 route_loop = VppIpRoute(self, "3::3", 128,
2145 proto=DpoProto.DPO_PROTO_IP6)],
2147 route_loop.add_vpp_config()
2149 p_l = (Ether(src=self.pg0.remote_mac,
2150 dst=self.pg0.local_mac) /
2151 IPv6(src="3::4", dst="3::3") /
2152 inet6.TCP(sport=1234, dport=1234) /
2155 self.send_and_assert_no_replies(self.pg0, p_l * 257,
2159 class TestIP6Input(VppTestCase):
2160 """ IPv6 Input Exception Test Cases """
2163 super(TestIP6Input, self).setUp()
2165 self.create_pg_interfaces(range(2))
2167 for i in self.pg_interfaces:
2173 super(TestIP6Input, self).tearDown()
2174 for i in self.pg_interfaces:
2178 def test_ip_input_icmp_reply(self):
2179 """ IP6 Input Exception - Return ICMP (3,0) """
2181 # hop limit - ICMP replies
2183 p_version = (Ether(src=self.pg0.remote_mac,
2184 dst=self.pg0.local_mac) /
2185 IPv6(src=self.pg0.remote_ip6,
2186 dst=self.pg1.remote_ip6,
2188 inet6.UDP(sport=1234, dport=1234) /
2191 rx = self.send_and_expect(self.pg0, p_version * 65, self.pg0)
2193 icmp = rx[ICMPv6TimeExceeded]
2195 # 0: "hop limit exceeded in transit",
2196 self.assertEqual((icmp.type, icmp.code), (3, 0))
2198 icmpv6_data = '\x0a' * 18
2200 all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2202 @parameterized.expand([
2203 # Name, src, dst, l4proto, msg, timeout
2204 ("src='iface', dst='iface'", None, None,
2205 inet6.UDP(sport=1234, dport=1234), "funky version", None),
2206 ("src='All 0's', dst='iface'", all_0s, None,
2207 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2208 ("src='iface', dst='All 0's'", None, all_0s,
2209 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2210 ("src='All 1's', dst='iface'", all_1s, None,
2211 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2212 ("src='iface', dst='All 1's'", None, all_1s,
2213 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2214 ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2215 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2218 def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2220 self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2222 p_version = (Ether(src=self.pg0.remote_mac,
2223 dst=self.pg0.local_mac) /
2224 IPv6(src=src or self.pg0.remote_ip6,
2225 dst=dst or self.pg1.remote_ip6,
2230 self.send_and_assert_no_replies(self.pg0, p_version * 65,
2235 if __name__ == '__main__':
2236 unittest.main(testRunner=VppTestRunner)