4 from socket import inet_pton, inet_ntop
7 from parameterized import parameterized
9 import scapy.layers.inet6 as inet6
10 from scapy.layers.inet import UDP
11 from scapy.contrib.mpls import MPLS
12 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
13 ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
14 ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
15 ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, \
16 IPv6ExtHdrHopByHop, ICMPv6MLReport2, ICMPv6MLDMultAddrRec
17 from scapy.layers.l2 import Ether, Dot1Q
18 from scapy.packet import Raw
19 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
23 from framework import VppTestCase, VppTestRunner, tag_run_solo
24 from util import ppp, ip6_normalize, mk_ll_addr
25 from vpp_papi import VppEnum
26 from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu
27 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
28 VppMRoutePath, VppMplsIpBind, \
29 VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, \
30 VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump, \
31 VppIp6LinkLocalAddress
32 from vpp_neighbor import find_nbr, VppNeighbor
33 from vpp_ipip_tun_interface import VppIpIpTunInterface
34 from vpp_pg_interface import is_ipv6_misc
35 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
36 from vpp_policer import VppPolicer, PolicerAction
37 from ipaddress import IPv6Network, IPv6Address
39 AF_INET6 = socket.AF_INET6
49 class TestIPv6ND(VppTestCase):
50 def validate_ra(self, intf, rx, dst_ip=None):
52 dst_ip = intf.remote_ip6
54 # unicasted packets must come to the unicast mac
55 self.assertEqual(rx[Ether].dst, intf.remote_mac)
57 # and from the router's MAC
58 self.assertEqual(rx[Ether].src, intf.local_mac)
60 # the rx'd RA should be addressed to the sender's source
61 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
62 self.assertEqual(in6_ptop(rx[IPv6].dst),
65 # and come from the router's link local
66 self.assertTrue(in6_islladdr(rx[IPv6].src))
67 self.assertEqual(in6_ptop(rx[IPv6].src),
68 in6_ptop(mk_ll_addr(intf.local_mac)))
70 def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
72 dst_ip = intf.remote_ip6
74 dst_ip = intf.local_ip6
76 # unicasted packets must come to the unicast mac
77 self.assertEqual(rx[Ether].dst, intf.remote_mac)
79 # and from the router's MAC
80 self.assertEqual(rx[Ether].src, intf.local_mac)
82 # the rx'd NA should be addressed to the sender's source
83 self.assertTrue(rx.haslayer(ICMPv6ND_NA))
84 self.assertEqual(in6_ptop(rx[IPv6].dst),
87 # and come from the target address
89 in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
91 # Dest link-layer options should have the router's MAC
92 dll = rx[ICMPv6NDOptDstLLAddr]
93 self.assertEqual(dll.lladdr, intf.local_mac)
95 def validate_ns(self, intf, rx, tgt_ip):
96 nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
97 dst_ip = inet_ntop(AF_INET6, nsma)
100 self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
102 # and from the router's MAC
103 self.assertEqual(rx[Ether].src, intf.local_mac)
105 # the rx'd NS should be addressed to an mcast address
106 # derived from the target address
108 in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
110 # expect the tgt IP in the NS header
112 self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
114 # packet is from the router's local address
116 in6_ptop(rx[IPv6].src), intf.local_ip6)
118 # Src link-layer options should have the router's MAC
119 sll = rx[ICMPv6NDOptSrcLLAddr]
120 self.assertEqual(sll.lladdr, intf.local_mac)
122 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
123 filter_out_fn=is_ipv6_misc):
124 intf.add_stream(pkts)
125 self.pg_enable_capture(self.pg_interfaces)
127 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
129 self.assertEqual(len(rx), 1)
131 self.validate_ra(intf, rx, dst_ip)
133 def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
135 filter_out_fn=is_ipv6_misc):
136 intf.add_stream(pkts)
137 self.pg_enable_capture(self.pg_interfaces)
139 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
141 self.assertEqual(len(rx), 1)
143 self.validate_na(intf, rx, dst_ip, tgt_ip)
145 def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
146 filter_out_fn=is_ipv6_misc):
147 self.vapi.cli("clear trace")
148 tx_intf.add_stream(pkts)
149 self.pg_enable_capture(self.pg_interfaces)
151 rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
153 self.assertEqual(len(rx), 1)
155 self.validate_ns(rx_intf, rx, tgt_ip)
157 def verify_ip(self, rx, smac, dmac, sip, dip):
159 self.assertEqual(ether.dst, dmac)
160 self.assertEqual(ether.src, smac)
163 self.assertEqual(ip.src, sip)
164 self.assertEqual(ip.dst, dip)
168 class TestIPv6(TestIPv6ND):
169 """ IPv6 Test Case """
173 super(TestIPv6, cls).setUpClass()
176 def tearDownClass(cls):
177 super(TestIPv6, cls).tearDownClass()
181 Perform test setup before test case.
184 - create 3 pg interfaces
185 - untagged pg0 interface
186 - Dot1Q subinterface on pg1
187 - Dot1AD subinterface on pg2
189 - put it into UP state
191 - resolve neighbor address using NDP
192 - configure 200 fib entries
194 :ivar list interfaces: pg interfaces and subinterfaces.
195 :ivar dict flows: IPv4 packet flows in test.
197 *TODO:* Create AD sub interface
199 super(TestIPv6, self).setUp()
201 # create 3 pg interfaces
202 self.create_pg_interfaces(range(3))
204 # create 2 subinterfaces for p1 and pg2
205 self.sub_interfaces = [
206 VppDot1QSubint(self, self.pg1, 100),
207 VppDot1QSubint(self, self.pg2, 200)
208 # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
211 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
213 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
214 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
215 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
218 self.pg_if_packet_sizes = [64, 1500, 9020]
220 self.interfaces = list(self.pg_interfaces)
221 self.interfaces.extend(self.sub_interfaces)
223 # setup all interfaces
224 for i in self.interfaces:
230 """Run standard test teardown and log ``show ip6 neighbors``."""
231 for i in self.interfaces:
234 for i in self.sub_interfaces:
235 i.remove_vpp_config()
237 super(TestIPv6, self).tearDown()
238 if not self.vpp_dead:
239 self.logger.info(self.vapi.cli("show ip6 neighbors"))
240 # info(self.vapi.cli("show ip6 fib")) # many entries
242 def modify_packet(self, src_if, packet_size, pkt):
243 """Add load, set destination IP and extend packet to required packet
244 size for defined interface.
246 :param VppInterface src_if: Interface to create packet for.
247 :param int packet_size: Required packet size.
248 :param Scapy pkt: Packet to be modified.
250 dst_if_idx = int(packet_size / 10 % 2)
251 dst_if = self.flows[src_if][dst_if_idx]
252 info = self.create_packet_info(src_if, dst_if)
253 payload = self.info_to_payload(info)
254 p = pkt / Raw(payload)
255 p[IPv6].dst = dst_if.remote_ip6
257 if isinstance(src_if, VppSubInterface):
258 p = src_if.add_dot1_layer(p)
259 self.extend_packet(p, packet_size)
263 def create_stream(self, src_if):
264 """Create input packet stream for defined interface.
266 :param VppInterface src_if: Interface to create packet stream for.
268 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
269 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
270 IPv6(src=src_if.remote_ip6) /
271 inet6.UDP(sport=1234, dport=1234))
273 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
274 for i in moves.range(self.pg_if_packet_sizes[0],
275 self.pg_if_packet_sizes[1], 10)]
276 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
277 for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
278 self.pg_if_packet_sizes[2] + hdr_ext,
284 def verify_capture(self, dst_if, capture):
285 """Verify captured input packet stream for defined interface.
287 :param VppInterface dst_if: Interface to verify captured packet stream
289 :param list capture: Captured packet stream.
291 self.logger.info("Verifying capture on interface %s" % dst_if.name)
293 for i in self.interfaces:
294 last_info[i.sw_if_index] = None
296 dst_sw_if_index = dst_if.sw_if_index
297 if hasattr(dst_if, 'parent'):
299 for packet in capture:
301 # Check VLAN tags and Ethernet header
302 packet = dst_if.remove_dot1_layer(packet)
303 self.assertTrue(Dot1Q not in packet)
306 udp = packet[inet6.UDP]
307 payload_info = self.payload_to_info(packet[Raw])
308 packet_index = payload_info.index
309 self.assertEqual(payload_info.dst, dst_sw_if_index)
311 "Got packet on port %s: src=%u (id=%u)" %
312 (dst_if.name, payload_info.src, packet_index))
313 next_info = self.get_next_packet_info_for_interface2(
314 payload_info.src, dst_sw_if_index,
315 last_info[payload_info.src])
316 last_info[payload_info.src] = next_info
317 self.assertTrue(next_info is not None)
318 self.assertEqual(packet_index, next_info.index)
319 saved_packet = next_info.data
320 # Check standard fields
322 ip.src, saved_packet[IPv6].src)
324 ip.dst, saved_packet[IPv6].dst)
326 udp.sport, saved_packet[inet6.UDP].sport)
328 udp.dport, saved_packet[inet6.UDP].dport)
330 self.logger.error(ppp("Unexpected or invalid packet:", packet))
332 for i in self.interfaces:
333 remaining_packet = self.get_next_packet_info_for_interface2(
334 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
335 self.assertTrue(remaining_packet is None,
336 "Interface %s: Packet expected from interface %s "
337 "didn't arrive" % (dst_if.name, i.name))
339 def test_next_header_anomaly(self):
340 """ IPv6 next header anomaly test
343 - ipv6 next header field = Fragment Header (44)
344 - next header is ICMPv6 Echo Request
345 - wait for reassembly
347 pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) /
348 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) /
351 self.pg0.add_stream(pkt)
354 # wait for reassembly
361 - Create IPv6 stream for pg0 interface
362 - Create IPv6 tagged streams for pg1's and pg2's subinterface.
363 - Send and verify received packets on each interface.
366 pkts = self.create_stream(self.pg0)
367 self.pg0.add_stream(pkts)
369 for i in self.sub_interfaces:
370 pkts = self.create_stream(i)
371 i.parent.add_stream(pkts)
373 self.pg_enable_capture(self.pg_interfaces)
376 pkts = self.pg0.get_capture()
377 self.verify_capture(self.pg0, pkts)
379 for i in self.sub_interfaces:
380 pkts = i.parent.get_capture()
381 self.verify_capture(i, pkts)
384 """ IPv6 Neighbour Solicitation Exceptions
387 - Send an NS Sourced from an address not covered by the link sub-net
388 - Send an NS to an mcast address the router has not joined
389 - Send NS for a target address the router does not onn.
393 # An NS from a non link source address
395 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
396 d = inet_ntop(AF_INET6, nsma)
398 p = (Ether(dst=in6_getnsmac(nsma)) /
399 IPv6(dst=d, src="2002::2") /
400 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
401 ICMPv6NDOptSrcLLAddr(
402 lladdr=self.pg0.remote_mac))
405 self.send_and_assert_no_replies(
407 "No response to NS source by address not on sub-net")
410 # An NS for sent to a solicited mcast group the router is
411 # not a member of FAILS
414 nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
415 d = inet_ntop(AF_INET6, nsma)
417 p = (Ether(dst=in6_getnsmac(nsma)) /
418 IPv6(dst=d, src=self.pg0.remote_ip6) /
419 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
420 ICMPv6NDOptSrcLLAddr(
421 lladdr=self.pg0.remote_mac))
424 self.send_and_assert_no_replies(
426 "No response to NS sent to unjoined mcast address")
429 # An NS whose target address is one the router does not own
431 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
432 d = inet_ntop(AF_INET6, nsma)
434 p = (Ether(dst=in6_getnsmac(nsma)) /
435 IPv6(dst=d, src=self.pg0.remote_ip6) /
436 ICMPv6ND_NS(tgt="fd::ffff") /
437 ICMPv6NDOptSrcLLAddr(
438 lladdr=self.pg0.remote_mac))
441 self.send_and_assert_no_replies(self.pg0, pkts,
442 "No response to NS for unknown target")
445 # A neighbor entry that has no associated FIB-entry
447 self.pg0.generate_remote_hosts(4)
448 nd_entry = VppNeighbor(self,
449 self.pg0.sw_if_index,
450 self.pg0.remote_hosts[2].mac,
451 self.pg0.remote_hosts[2].ip6,
453 nd_entry.add_vpp_config()
456 # check we have the neighbor, but no route
458 self.assertTrue(find_nbr(self,
459 self.pg0.sw_if_index,
460 self.pg0._remote_hosts[2].ip6))
461 self.assertFalse(find_route(self,
462 self.pg0._remote_hosts[2].ip6,
466 # send an NS from a link local address to the interface's global
469 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
471 dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
472 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
473 ICMPv6NDOptSrcLLAddr(
474 lladdr=self.pg0.remote_mac))
476 self.send_and_expect_na(self.pg0, p,
477 "NS from link-local",
478 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
479 tgt_ip=self.pg0.local_ip6)
482 # we should have learned an ND entry for the peer's link-local
483 # but not inserted a route to it in the FIB
485 self.assertTrue(find_nbr(self,
486 self.pg0.sw_if_index,
487 self.pg0._remote_hosts[2].ip6_ll))
488 self.assertFalse(find_route(self,
489 self.pg0._remote_hosts[2].ip6_ll,
493 # An NS to the router's own Link-local
495 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
497 dst=d, src=self.pg0._remote_hosts[3].ip6_ll) /
498 ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) /
499 ICMPv6NDOptSrcLLAddr(
500 lladdr=self.pg0.remote_mac))
502 self.send_and_expect_na(self.pg0, p,
503 "NS to/from link-local",
504 dst_ip=self.pg0._remote_hosts[3].ip6_ll,
505 tgt_ip=self.pg0.local_ip6_ll)
508 # we should have learned an ND entry for the peer's link-local
509 # but not inserted a route to it in the FIB
511 self.assertTrue(find_nbr(self,
512 self.pg0.sw_if_index,
513 self.pg0._remote_hosts[3].ip6_ll))
514 self.assertFalse(find_route(self,
515 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 should 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, src_ip=None,
589 mtu=9000, pi_opt=None):
591 dst_ip = intf.remote_ip6
593 src_ip = mk_ll_addr(intf.local_mac)
595 # unicasted packets must come to the unicast mac
596 self.assertEqual(rx[Ether].dst, intf.remote_mac)
598 # and from the router's MAC
599 self.assertEqual(rx[Ether].src, intf.local_mac)
601 # the rx'd RA should be addressed to the sender's source
602 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
603 self.assertEqual(in6_ptop(rx[IPv6].dst),
606 # and come from the router's link local
607 self.assertTrue(in6_islladdr(rx[IPv6].src))
608 self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(src_ip))
610 # it should contain the links MTU
612 self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
614 # it should contain the source's link layer address option
615 sll = ra[ICMPv6NDOptSrcLLAddr]
616 self.assertEqual(sll.lladdr, intf.local_mac)
619 # the RA should not contain prefix information
620 self.assertFalse(ra.haslayer(
621 ICMPv6NDOptPrefixInfo))
623 raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
625 # the options are nested in the scapy packet in way that i cannot
626 # decipher how to decode. this 1st layer of option always returns
627 # nested classes, so a direct obj1=obj2 comparison always fails.
628 # however, the getlayer(.., 2) does give one instance.
629 # so we cheat here and construct a new opt instance for comparison
630 rd = ICMPv6NDOptPrefixInfo(
631 prefixlen=raos.prefixlen,
635 if type(pi_opt) is list:
636 for ii in range(len(pi_opt)):
637 self.assertEqual(pi_opt[ii], rd)
639 ICMPv6NDOptPrefixInfo, ii + 2)
641 self.assertEqual(pi_opt, raos, 'Expected: %s, received: %s'
642 % (pi_opt.show(dump=True),
643 raos.show(dump=True)))
645 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
646 filter_out_fn=is_ipv6_misc,
649 self.vapi.cli("clear trace")
650 intf.add_stream(pkts)
651 self.pg_enable_capture(self.pg_interfaces)
653 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
655 self.assertEqual(len(rx), 1)
657 self.validate_ra(intf, rx, dst_ip, src_ip=src_ip, pi_opt=opt)
660 """ IPv6 Router Solicitation Exceptions
666 # Before we begin change the IPv6 RA responses to use the unicast
667 # address - that way we will not confuse them with the periodic
668 # RAs which go to the mcast address
669 # Sit and wait for the first periodic RA.
673 self.pg0.ip6_ra_config(send_unicast=1)
676 # An RS from a link source address
677 # - expect an RA in return
679 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
680 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
683 self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
686 # For the next RS sent the RA should be rate limited
688 self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
691 # When we reconfigure the IPv6 RA config,
692 # we reset the RA rate limiting,
693 # so we need to do this before each test below so as not to drop
694 # packets for rate limiting reasons. Test this works here.
696 self.pg0.ip6_ra_config(send_unicast=1)
697 self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
700 # An RS sent from a non-link local source
702 self.pg0.ip6_ra_config(send_unicast=1)
703 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
704 IPv6(dst=self.pg0.local_ip6,
708 self.send_and_assert_no_replies(self.pg0, pkts,
709 "RS from non-link source")
712 # Source an RS from a link local address
714 self.pg0.ip6_ra_config(send_unicast=1)
715 ll = mk_ll_addr(self.pg0.remote_mac)
716 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
717 IPv6(dst=self.pg0.local_ip6, src=ll) /
720 self.send_and_expect_ra(self.pg0, pkts,
721 "RS sourced from link-local",
725 # Send the RS multicast
727 self.pg0.ip6_ra_config(send_unicast=1)
728 dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
729 ll = mk_ll_addr(self.pg0.remote_mac)
730 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
731 IPv6(dst="ff02::2", src=ll) /
734 self.send_and_expect_ra(self.pg0, pkts,
735 "RS sourced from link-local",
739 # Source from the unspecified address ::. This happens when the RS
740 # is sent before the host has a configured address/sub-net,
741 # i.e. auto-config. Since the sender has no IP address, the reply
742 # comes back mcast - so the capture needs to not filter this.
743 # If we happen to pick up the periodic RA at this point then so be it,
746 self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
747 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
748 IPv6(dst="ff02::2", src="::") /
751 self.send_and_expect_ra(self.pg0, pkts,
752 "RS sourced from unspecified",
757 # Configure The RA to announce the links prefix
759 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
760 self.pg0.local_ip6_prefix_len))
763 # RAs should now contain the prefix information option
765 opt = ICMPv6NDOptPrefixInfo(
766 prefixlen=self.pg0.local_ip6_prefix_len,
767 prefix=self.pg0.local_ip6,
771 self.pg0.ip6_ra_config(send_unicast=1)
772 ll = mk_ll_addr(self.pg0.remote_mac)
773 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
774 IPv6(dst=self.pg0.local_ip6, src=ll) /
776 self.send_and_expect_ra(self.pg0, p,
777 "RA with prefix-info",
782 # Change the prefix info to not off-link
785 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
786 self.pg0.local_ip6_prefix_len),
789 opt = ICMPv6NDOptPrefixInfo(
790 prefixlen=self.pg0.local_ip6_prefix_len,
791 prefix=self.pg0.local_ip6,
795 self.pg0.ip6_ra_config(send_unicast=1)
796 self.send_and_expect_ra(self.pg0, p,
797 "RA with Prefix info with L-flag=0",
802 # Change the prefix info to not off-link, no-autoconfig
803 # L and A flag are clear in the advert
805 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
806 self.pg0.local_ip6_prefix_len),
810 opt = ICMPv6NDOptPrefixInfo(
811 prefixlen=self.pg0.local_ip6_prefix_len,
812 prefix=self.pg0.local_ip6,
816 self.pg0.ip6_ra_config(send_unicast=1)
817 self.send_and_expect_ra(self.pg0, p,
818 "RA with Prefix info with A & L-flag=0",
823 # Change the flag settings back to the defaults
824 # L and A flag are set in the advert
826 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
827 self.pg0.local_ip6_prefix_len))
829 opt = ICMPv6NDOptPrefixInfo(
830 prefixlen=self.pg0.local_ip6_prefix_len,
831 prefix=self.pg0.local_ip6,
835 self.pg0.ip6_ra_config(send_unicast=1)
836 self.send_and_expect_ra(self.pg0, p,
837 "RA with Prefix info",
842 # Change the prefix info to not off-link, no-autoconfig
843 # L and A flag are clear in the advert
845 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
846 self.pg0.local_ip6_prefix_len),
850 opt = ICMPv6NDOptPrefixInfo(
851 prefixlen=self.pg0.local_ip6_prefix_len,
852 prefix=self.pg0.local_ip6,
856 self.pg0.ip6_ra_config(send_unicast=1)
857 self.send_and_expect_ra(self.pg0, p,
858 "RA with Prefix info with A & L-flag=0",
863 # Use the reset to defaults option to revert to defaults
864 # L and A flag are clear in the advert
866 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
867 self.pg0.local_ip6_prefix_len),
870 opt = ICMPv6NDOptPrefixInfo(
871 prefixlen=self.pg0.local_ip6_prefix_len,
872 prefix=self.pg0.local_ip6,
876 self.pg0.ip6_ra_config(send_unicast=1)
877 self.send_and_expect_ra(self.pg0, p,
878 "RA with Prefix reverted to defaults",
883 # Advertise Another prefix. With no L-flag/A-flag
885 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
886 self.pg1.local_ip6_prefix_len),
890 opt = [ICMPv6NDOptPrefixInfo(
891 prefixlen=self.pg0.local_ip6_prefix_len,
892 prefix=self.pg0.local_ip6,
895 ICMPv6NDOptPrefixInfo(
896 prefixlen=self.pg1.local_ip6_prefix_len,
897 prefix=self.pg1.local_ip6,
901 self.pg0.ip6_ra_config(send_unicast=1)
902 ll = mk_ll_addr(self.pg0.remote_mac)
903 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
904 IPv6(dst=self.pg0.local_ip6, src=ll) /
906 self.send_and_expect_ra(self.pg0, p,
907 "RA with multiple Prefix infos",
912 # Remove the first prefix-info - expect the second is still in the
915 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6,
916 self.pg0.local_ip6_prefix_len),
919 opt = ICMPv6NDOptPrefixInfo(
920 prefixlen=self.pg1.local_ip6_prefix_len,
921 prefix=self.pg1.local_ip6,
925 self.pg0.ip6_ra_config(send_unicast=1)
926 self.send_and_expect_ra(self.pg0, p,
927 "RA with Prefix reverted to defaults",
932 # Remove the second prefix-info - expect no prefix-info in the adverts
934 self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6,
935 self.pg1.local_ip6_prefix_len),
939 # change the link's link local, so we know that works too.
941 self.vapi.sw_interface_ip6_set_link_local_address(
942 sw_if_index=self.pg0.sw_if_index,
945 self.pg0.ip6_ra_config(send_unicast=1)
946 self.send_and_expect_ra(self.pg0, p,
947 "RA with Prefix reverted to defaults",
952 # Reset the periodic advertisements back to default values
954 self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
959 # test one MLD is sent after applying an IPv6 Address on an interface
961 self.pg_enable_capture(self.pg_interfaces)
964 subitf = VppDot1QSubint(self, self.pg1, 99)
969 rxs = self.pg1._get_capture(timeout=4, filter_out_fn=None)
972 # hunt for the MLD on vlan 99
975 # make sure ipv6 packets with hop by hop options have
977 self.assert_packet_checksums_valid(rx)
978 if rx.haslayer(IPv6ExtHdrHopByHop) and \
979 rx.haslayer(Dot1Q) and \
980 rx[Dot1Q].vlan == 99:
981 mld = rx[ICMPv6MLReport2]
983 self.assertEqual(mld.records_number, 4)
986 class TestIPv6RouteLookup(VppTestCase):
987 """ IPv6 Route Lookup Test Case """
990 def route_lookup(self, prefix, exact):
991 return self.vapi.api(self.vapi.papi.ip_route_lookup,
1000 super(TestIPv6RouteLookup, cls).setUpClass()
1003 def tearDownClass(cls):
1004 super(TestIPv6RouteLookup, cls).tearDownClass()
1007 super(TestIPv6RouteLookup, self).setUp()
1009 drop_nh = VppRoutePath("::1", 0xffffffff,
1010 type=FibPathType.FIB_PATH_TYPE_DROP)
1013 r = VppIpRoute(self, "2001:1111::", 32, [drop_nh])
1015 self.routes.append(r)
1017 r = VppIpRoute(self, "2001:1111:2222::", 48, [drop_nh])
1019 self.routes.append(r)
1021 r = VppIpRoute(self, "2001:1111:2222::1", 128, [drop_nh])
1023 self.routes.append(r)
1026 # Remove the routes we added
1027 for r in self.routes:
1028 r.remove_vpp_config()
1030 super(TestIPv6RouteLookup, self).tearDown()
1032 def test_exact_match(self):
1033 # Verify we find the host route
1034 prefix = "2001:1111:2222::1/128"
1035 result = self.route_lookup(prefix, True)
1036 assert (prefix == str(result.route.prefix))
1038 # Verify we find a middle prefix route
1039 prefix = "2001:1111:2222::/48"
1040 result = self.route_lookup(prefix, True)
1041 assert (prefix == str(result.route.prefix))
1043 # Verify we do not find an available LPM.
1044 with self.vapi.assert_negative_api_retval():
1045 self.route_lookup("2001::2/128", True)
1047 def test_longest_prefix_match(self):
1048 # verify we find lpm
1049 lpm_prefix = "2001:1111:2222::/48"
1050 result = self.route_lookup("2001:1111:2222::2/128", False)
1051 assert (lpm_prefix == str(result.route.prefix))
1053 # Verify we find the exact when not requested
1054 result = self.route_lookup(lpm_prefix, False)
1055 assert (lpm_prefix == str(result.route.prefix))
1057 # Can't seem to delete the default route so no negative LPM test.
1060 class TestIPv6IfAddrRoute(VppTestCase):
1061 """ IPv6 Interface Addr Route Test Case """
1064 def setUpClass(cls):
1065 super(TestIPv6IfAddrRoute, cls).setUpClass()
1068 def tearDownClass(cls):
1069 super(TestIPv6IfAddrRoute, cls).tearDownClass()
1072 super(TestIPv6IfAddrRoute, self).setUp()
1074 # create 1 pg interface
1075 self.create_pg_interfaces(range(1))
1077 for i in self.pg_interfaces:
1083 super(TestIPv6IfAddrRoute, self).tearDown()
1084 for i in self.pg_interfaces:
1088 def test_ipv6_ifaddrs_same_prefix(self):
1089 """ IPv6 Interface Addresses Same Prefix test
1093 - Verify no route in FIB for prefix 2001:10::/64
1094 - Configure IPv4 address 2001:10::10/64 on an interface
1095 - Verify route in FIB for prefix 2001:10::/64
1096 - Configure IPv4 address 2001:10::20/64 on an interface
1097 - Delete 2001:10::10/64 from interface
1098 - Verify route in FIB for prefix 2001:10::/64
1099 - Delete 2001:10::20/64 from interface
1100 - Verify no route in FIB for prefix 2001:10::/64
1103 addr1 = "2001:10::10"
1104 addr2 = "2001:10::20"
1106 if_addr1 = VppIpInterfaceAddress(self, self.pg0, addr1, 64)
1107 if_addr2 = VppIpInterfaceAddress(self, self.pg0, addr2, 64)
1108 self.assertFalse(if_addr1.query_vpp_config())
1109 self.assertFalse(find_route(self, addr1, 128))
1110 self.assertFalse(find_route(self, addr2, 128))
1112 # configure first address, verify route present
1113 if_addr1.add_vpp_config()
1114 self.assertTrue(if_addr1.query_vpp_config())
1115 self.assertTrue(find_route(self, addr1, 128))
1116 self.assertFalse(find_route(self, addr2, 128))
1118 # configure second address, delete first, verify route not removed
1119 if_addr2.add_vpp_config()
1120 if_addr1.remove_vpp_config()
1121 self.assertFalse(if_addr1.query_vpp_config())
1122 self.assertTrue(if_addr2.query_vpp_config())
1123 self.assertFalse(find_route(self, addr1, 128))
1124 self.assertTrue(find_route(self, addr2, 128))
1126 # delete second address, verify route removed
1127 if_addr2.remove_vpp_config()
1128 self.assertFalse(if_addr1.query_vpp_config())
1129 self.assertFalse(find_route(self, addr1, 128))
1130 self.assertFalse(find_route(self, addr2, 128))
1132 def test_ipv6_ifaddr_del(self):
1133 """ Delete an interface address that does not exist """
1135 loopbacks = self.create_loopback_interfaces(1)
1136 lo = self.lo_interfaces[0]
1142 # try and remove pg0's subnet from lo
1144 with self.vapi.assert_negative_api_retval():
1145 self.vapi.sw_interface_add_del_address(
1146 sw_if_index=lo.sw_if_index,
1147 prefix=self.pg0.local_ip6_prefix,
1151 class TestICMPv6Echo(VppTestCase):
1152 """ ICMPv6 Echo Test Case """
1155 def setUpClass(cls):
1156 super(TestICMPv6Echo, cls).setUpClass()
1159 def tearDownClass(cls):
1160 super(TestICMPv6Echo, cls).tearDownClass()
1163 super(TestICMPv6Echo, self).setUp()
1165 # create 1 pg interface
1166 self.create_pg_interfaces(range(1))
1168 for i in self.pg_interfaces:
1171 i.resolve_ndp(link_layer=True)
1175 super(TestICMPv6Echo, self).tearDown()
1176 for i in self.pg_interfaces:
1180 def test_icmpv6_echo(self):
1181 """ VPP replies to ICMPv6 Echo Request
1185 - Receive ICMPv6 Echo Request message on pg0 interface.
1186 - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
1189 # test both with global and local ipv6 addresses
1190 dsts = (self.pg0.local_ip6, self.pg0.local_ip6_ll)
1196 p.append((Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
1197 IPv6(src=self.pg0.remote_ip6, dst=dst) /
1198 ICMPv6EchoRequest(id=id, seq=seq, data=data)))
1200 self.pg0.add_stream(p)
1201 self.pg_enable_capture(self.pg_interfaces)
1203 rxs = self.pg0.get_capture(len(dsts))
1205 for rx, dst in zip(rxs, dsts):
1208 icmpv6 = rx[ICMPv6EchoReply]
1209 self.assertEqual(ether.src, self.pg0.local_mac)
1210 self.assertEqual(ether.dst, self.pg0.remote_mac)
1211 self.assertEqual(ipv6.src, dst)
1212 self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1213 self.assertEqual(icmp6types[icmpv6.type], "Echo Reply")
1214 self.assertEqual(icmpv6.id, id)
1215 self.assertEqual(icmpv6.seq, seq)
1216 self.assertEqual(icmpv6.data, data)
1219 class TestIPv6RD(TestIPv6ND):
1220 """ IPv6 Router Discovery Test Case """
1223 def setUpClass(cls):
1224 super(TestIPv6RD, cls).setUpClass()
1227 def tearDownClass(cls):
1228 super(TestIPv6RD, cls).tearDownClass()
1231 super(TestIPv6RD, self).setUp()
1233 # create 2 pg interfaces
1234 self.create_pg_interfaces(range(2))
1236 self.interfaces = list(self.pg_interfaces)
1238 # setup all interfaces
1239 for i in self.interfaces:
1244 for i in self.interfaces:
1247 super(TestIPv6RD, self).tearDown()
1249 def test_rd_send_router_solicitation(self):
1250 """ Verify router solicitation packets """
1253 self.pg_enable_capture(self.pg_interfaces)
1255 self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1257 rx_list = self.pg1.get_capture(count, timeout=3)
1258 self.assertEqual(len(rx_list), count)
1259 for packet in rx_list:
1260 self.assertEqual(packet.haslayer(IPv6), 1)
1261 self.assertEqual(packet[IPv6].haslayer(
1263 dst = ip6_normalize(packet[IPv6].dst)
1264 dst2 = ip6_normalize("ff02::2")
1265 self.assert_equal(dst, dst2)
1266 src = ip6_normalize(packet[IPv6].src)
1267 src2 = ip6_normalize(self.pg1.local_ip6_ll)
1268 self.assert_equal(src, src2)
1270 bool(packet[ICMPv6ND_RS].haslayer(
1271 ICMPv6NDOptSrcLLAddr)))
1273 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1276 def verify_prefix_info(self, reported_prefix, prefix_option):
1277 prefix = IPv6Network(
1278 text_type(prefix_option.getfieldval("prefix") +
1280 text_type(prefix_option.getfieldval("prefixlen"))),
1282 self.assert_equal(reported_prefix.prefix.network_address,
1283 prefix.network_address)
1284 L = prefix_option.getfieldval("L")
1285 A = prefix_option.getfieldval("A")
1286 option_flags = (L << 7) | (A << 6)
1287 self.assert_equal(reported_prefix.flags, option_flags)
1288 self.assert_equal(reported_prefix.valid_time,
1289 prefix_option.getfieldval("validlifetime"))
1290 self.assert_equal(reported_prefix.preferred_time,
1291 prefix_option.getfieldval("preferredlifetime"))
1293 def test_rd_receive_router_advertisement(self):
1294 """ Verify events triggered by received RA packets """
1296 self.vapi.want_ip6_ra_events(enable=1)
1298 prefix_info_1 = ICMPv6NDOptPrefixInfo(
1302 preferredlifetime=500,
1307 prefix_info_2 = ICMPv6NDOptPrefixInfo(
1311 preferredlifetime=1000,
1316 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1317 IPv6(dst=self.pg1.local_ip6_ll,
1318 src=mk_ll_addr(self.pg1.remote_mac)) /
1322 self.pg1.add_stream([p])
1325 ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1327 self.assert_equal(ev.current_hop_limit, 0)
1328 self.assert_equal(ev.flags, 8)
1329 self.assert_equal(ev.router_lifetime_in_sec, 1800)
1330 self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1332 ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1334 self.assert_equal(ev.n_prefixes, 2)
1336 self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1337 self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1340 class TestIPv6RDControlPlane(TestIPv6ND):
1341 """ IPv6 Router Discovery Control Plane Test Case """
1344 def setUpClass(cls):
1345 super(TestIPv6RDControlPlane, cls).setUpClass()
1348 def tearDownClass(cls):
1349 super(TestIPv6RDControlPlane, cls).tearDownClass()
1352 super(TestIPv6RDControlPlane, self).setUp()
1354 # create 1 pg interface
1355 self.create_pg_interfaces(range(1))
1357 self.interfaces = list(self.pg_interfaces)
1359 # setup all interfaces
1360 for i in self.interfaces:
1365 super(TestIPv6RDControlPlane, self).tearDown()
1368 def create_ra_packet(pg, routerlifetime=None):
1369 src_ip = pg.remote_ip6_ll
1370 dst_ip = pg.local_ip6
1371 if routerlifetime is not None:
1372 ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1375 p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1376 IPv6(dst=dst_ip, src=src_ip) / ra)
1380 def get_default_routes(fib):
1383 if entry.route.prefix.prefixlen == 0:
1384 for path in entry.route.paths:
1385 if path.sw_if_index != 0xFFFFFFFF:
1387 defaut_route['sw_if_index'] = path.sw_if_index
1388 defaut_route['next_hop'] = path.nh.address.ip6
1389 list.append(defaut_route)
1393 def get_interface_addresses(fib, pg):
1396 if entry.route.prefix.prefixlen == 128:
1397 path = entry.route.paths[0]
1398 if path.sw_if_index == pg.sw_if_index:
1399 list.append(str(entry.route.prefix.network_address))
1402 def wait_for_no_default_route(self, n_tries=50, s_time=1):
1404 fib = self.vapi.ip_route_dump(0, True)
1405 default_routes = self.get_default_routes(fib)
1406 if 0 == len(default_routes):
1408 n_tries = n_tries - 1
1414 """ Test handling of SLAAC addresses and default routes """
1416 fib = self.vapi.ip_route_dump(0, True)
1417 default_routes = self.get_default_routes(fib)
1418 initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1419 self.assertEqual(default_routes, [])
1420 router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll))
1422 self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1427 packet = (self.create_ra_packet(
1428 self.pg0) / ICMPv6NDOptPrefixInfo(
1432 preferredlifetime=2,
1435 ) / ICMPv6NDOptPrefixInfo(
1439 preferredlifetime=1000,
1443 self.pg0.add_stream([packet])
1446 self.sleep_on_vpp_time(0.1)
1448 fib = self.vapi.ip_route_dump(0, True)
1450 # check FIB for new address
1451 addresses = set(self.get_interface_addresses(fib, self.pg0))
1452 new_addresses = addresses.difference(initial_addresses)
1453 self.assertEqual(len(new_addresses), 1)
1454 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1456 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1458 # check FIB for new default route
1459 default_routes = self.get_default_routes(fib)
1460 self.assertEqual(len(default_routes), 1)
1461 dr = default_routes[0]
1462 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1463 self.assertEqual(dr['next_hop'], router_address)
1465 # send RA to delete default route
1466 packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1467 self.pg0.add_stream([packet])
1470 self.sleep_on_vpp_time(0.1)
1472 # check that default route is deleted
1473 fib = self.vapi.ip_route_dump(0, True)
1474 default_routes = self.get_default_routes(fib)
1475 self.assertEqual(len(default_routes), 0)
1477 self.sleep_on_vpp_time(0.1)
1480 packet = self.create_ra_packet(self.pg0)
1481 self.pg0.add_stream([packet])
1484 self.sleep_on_vpp_time(0.1)
1486 # check FIB for new default route
1487 fib = self.vapi.ip_route_dump(0, True)
1488 default_routes = self.get_default_routes(fib)
1489 self.assertEqual(len(default_routes), 1)
1490 dr = default_routes[0]
1491 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1492 self.assertEqual(dr['next_hop'], router_address)
1494 # send RA, updating router lifetime to 1s
1495 packet = self.create_ra_packet(self.pg0, 1)
1496 self.pg0.add_stream([packet])
1499 self.sleep_on_vpp_time(0.1)
1501 # check that default route still exists
1502 fib = self.vapi.ip_route_dump(0, True)
1503 default_routes = self.get_default_routes(fib)
1504 self.assertEqual(len(default_routes), 1)
1505 dr = default_routes[0]
1506 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1507 self.assertEqual(dr['next_hop'], router_address)
1509 self.sleep_on_vpp_time(1)
1511 # check that default route is deleted
1512 self.assertTrue(self.wait_for_no_default_route())
1514 # check FIB still contains the SLAAC address
1515 addresses = set(self.get_interface_addresses(fib, self.pg0))
1516 new_addresses = addresses.difference(initial_addresses)
1518 self.assertEqual(len(new_addresses), 1)
1519 prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)),
1521 self.assertEqual(prefix, IPv6Network(text_type('1::/20')))
1523 self.sleep_on_vpp_time(1)
1525 # check that SLAAC address is deleted
1526 fib = self.vapi.ip_route_dump(0, True)
1527 addresses = set(self.get_interface_addresses(fib, self.pg0))
1528 new_addresses = addresses.difference(initial_addresses)
1529 self.assertEqual(len(new_addresses), 0)
1532 class IPv6NDProxyTest(TestIPv6ND):
1533 """ IPv6 ND ProxyTest Case """
1536 def setUpClass(cls):
1537 super(IPv6NDProxyTest, cls).setUpClass()
1540 def tearDownClass(cls):
1541 super(IPv6NDProxyTest, cls).tearDownClass()
1544 super(IPv6NDProxyTest, self).setUp()
1546 # create 3 pg interfaces
1547 self.create_pg_interfaces(range(3))
1549 # pg0 is the master interface, with the configured subnet
1551 self.pg0.config_ip6()
1552 self.pg0.resolve_ndp()
1554 self.pg1.ip6_enable()
1555 self.pg2.ip6_enable()
1558 super(IPv6NDProxyTest, self).tearDown()
1560 def test_nd_proxy(self):
1561 """ IPv6 Proxy ND """
1564 # Generate some hosts in the subnet that we are proxying
1566 self.pg0.generate_remote_hosts(8)
1568 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1569 d = inet_ntop(AF_INET6, nsma)
1572 # Send an NS for one of those remote hosts on one of the proxy links
1573 # expect no response since it's from an address that is not
1574 # on the link that has the prefix configured
1576 ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1578 src=self.pg0._remote_hosts[2].ip6) /
1579 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1580 ICMPv6NDOptSrcLLAddr(
1581 lladdr=self.pg0._remote_hosts[2].mac))
1583 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1586 # Add proxy support for the host
1588 self.vapi.ip6nd_proxy_add_del(
1589 is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1590 sw_if_index=self.pg1.sw_if_index)
1593 # try that NS again. this time we expect an NA back
1595 self.send_and_expect_na(self.pg1, ns_pg1,
1596 "NS to proxy entry",
1597 dst_ip=self.pg0._remote_hosts[2].ip6,
1598 tgt_ip=self.pg0.local_ip6)
1601 # ... and that we have an entry in the ND cache
1603 self.assertTrue(find_nbr(self,
1604 self.pg1.sw_if_index,
1605 self.pg0._remote_hosts[2].ip6))
1608 # ... and we can route traffic to it
1610 t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1611 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1612 src=self.pg0.remote_ip6) /
1613 inet6.UDP(sport=10000, dport=20000) /
1616 self.pg0.add_stream(t)
1617 self.pg_enable_capture(self.pg_interfaces)
1619 rx = self.pg1.get_capture(1)
1622 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1623 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1625 self.assertEqual(rx[IPv6].src,
1627 self.assertEqual(rx[IPv6].dst,
1631 # Test we proxy for the host on the main interface
1633 ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1634 IPv6(dst=d, src=self.pg0.remote_ip6) /
1636 tgt=self.pg0._remote_hosts[2].ip6) /
1637 ICMPv6NDOptSrcLLAddr(
1638 lladdr=self.pg0.remote_mac))
1640 self.send_and_expect_na(self.pg0, ns_pg0,
1641 "NS to proxy entry on main",
1642 tgt_ip=self.pg0._remote_hosts[2].ip6,
1643 dst_ip=self.pg0.remote_ip6)
1646 # Setup and resolve proxy for another host on another interface
1648 ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1650 src=self.pg0._remote_hosts[3].ip6) /
1651 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1652 ICMPv6NDOptSrcLLAddr(
1653 lladdr=self.pg0._remote_hosts[2].mac))
1655 self.vapi.ip6nd_proxy_add_del(
1656 is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1657 sw_if_index=self.pg2.sw_if_index)
1659 self.send_and_expect_na(self.pg2, ns_pg2,
1660 "NS to proxy entry other interface",
1661 dst_ip=self.pg0._remote_hosts[3].ip6,
1662 tgt_ip=self.pg0.local_ip6)
1664 self.assertTrue(find_nbr(self,
1665 self.pg2.sw_if_index,
1666 self.pg0._remote_hosts[3].ip6))
1669 # hosts can communicate. pg2->pg1
1671 t2 = (Ether(dst=self.pg2.local_mac,
1672 src=self.pg0.remote_hosts[3].mac) /
1673 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1674 src=self.pg0._remote_hosts[3].ip6) /
1675 inet6.UDP(sport=10000, dport=20000) /
1678 self.pg2.add_stream(t2)
1679 self.pg_enable_capture(self.pg_interfaces)
1681 rx = self.pg1.get_capture(1)
1684 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1685 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1687 self.assertEqual(rx[IPv6].src,
1689 self.assertEqual(rx[IPv6].dst,
1693 # remove the proxy configs
1695 self.vapi.ip6nd_proxy_add_del(
1696 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1697 sw_if_index=self.pg1.sw_if_index, is_add=0)
1698 self.vapi.ip6nd_proxy_add_del(
1699 ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1700 sw_if_index=self.pg2.sw_if_index, is_add=0)
1702 self.assertFalse(find_nbr(self,
1703 self.pg2.sw_if_index,
1704 self.pg0._remote_hosts[3].ip6))
1705 self.assertFalse(find_nbr(self,
1706 self.pg1.sw_if_index,
1707 self.pg0._remote_hosts[2].ip6))
1710 # no longer proxy-ing...
1712 self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1713 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1714 self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1717 # no longer forwarding. traffic generates NS out of the glean/main
1720 self.pg2.add_stream(t2)
1721 self.pg_enable_capture(self.pg_interfaces)
1724 rx = self.pg0.get_capture(1)
1726 self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1729 class TestIPNull(VppTestCase):
1730 """ IPv6 routes via NULL """
1733 def setUpClass(cls):
1734 super(TestIPNull, cls).setUpClass()
1737 def tearDownClass(cls):
1738 super(TestIPNull, cls).tearDownClass()
1741 super(TestIPNull, self).setUp()
1743 # create 2 pg interfaces
1744 self.create_pg_interfaces(range(1))
1746 for i in self.pg_interfaces:
1752 super(TestIPNull, self).tearDown()
1753 for i in self.pg_interfaces:
1757 def test_ip_null(self):
1758 """ IP NULL route """
1760 p = (Ether(src=self.pg0.remote_mac,
1761 dst=self.pg0.local_mac) /
1762 IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1763 inet6.UDP(sport=1234, dport=1234) /
1767 # A route via IP NULL that will reply with ICMP unreachables
1769 ip_unreach = VppIpRoute(
1771 [VppRoutePath("::", 0xffffffff,
1772 type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)])
1773 ip_unreach.add_vpp_config()
1775 self.pg0.add_stream(p)
1776 self.pg_enable_capture(self.pg_interfaces)
1779 rx = self.pg0.get_capture(1)
1781 icmp = rx[ICMPv6DestUnreach]
1783 # 0 = "No route to destination"
1784 self.assertEqual(icmp.code, 0)
1786 # ICMP is rate limited. pause a bit
1790 # A route via IP NULL that will reply with ICMP prohibited
1792 ip_prohibit = VppIpRoute(
1793 self, "2001::1", 128,
1794 [VppRoutePath("::", 0xffffffff,
1795 type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)])
1796 ip_prohibit.add_vpp_config()
1798 self.pg0.add_stream(p)
1799 self.pg_enable_capture(self.pg_interfaces)
1802 rx = self.pg0.get_capture(1)
1804 icmp = rx[ICMPv6DestUnreach]
1806 # 1 = "Communication with destination administratively prohibited"
1807 self.assertEqual(icmp.code, 1)
1810 class TestIPDisabled(VppTestCase):
1811 """ IPv6 disabled """
1814 def setUpClass(cls):
1815 super(TestIPDisabled, cls).setUpClass()
1818 def tearDownClass(cls):
1819 super(TestIPDisabled, cls).tearDownClass()
1822 super(TestIPDisabled, self).setUp()
1824 # create 2 pg interfaces
1825 self.create_pg_interfaces(range(2))
1829 self.pg0.config_ip6()
1830 self.pg0.resolve_ndp()
1832 # PG 1 is not IP enabled
1836 super(TestIPDisabled, self).tearDown()
1837 for i in self.pg_interfaces:
1841 def test_ip_disabled(self):
1844 MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
1845 MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
1848 # one accepting interface, pg0, 2 forwarding interfaces
1850 route_ff_01 = VppIpMRoute(
1854 MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
1855 [VppMRoutePath(self.pg1.sw_if_index,
1856 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT),
1857 VppMRoutePath(self.pg0.sw_if_index,
1858 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)])
1859 route_ff_01.add_vpp_config()
1861 pu = (Ether(src=self.pg1.remote_mac,
1862 dst=self.pg1.local_mac) /
1863 IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1864 inet6.UDP(sport=1234, dport=1234) /
1866 pm = (Ether(src=self.pg1.remote_mac,
1867 dst=self.pg1.local_mac) /
1868 IPv6(src="2001::1", dst="ffef::1") /
1869 inet6.UDP(sport=1234, dport=1234) /
1873 # PG1 does not forward IP traffic
1875 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1876 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1881 self.pg1.config_ip6()
1884 # Now we get packets through
1886 self.pg1.add_stream(pu)
1887 self.pg_enable_capture(self.pg_interfaces)
1889 rx = self.pg0.get_capture(1)
1891 self.pg1.add_stream(pm)
1892 self.pg_enable_capture(self.pg_interfaces)
1894 rx = self.pg0.get_capture(1)
1899 self.pg1.unconfig_ip6()
1902 # PG1 does not forward IP traffic
1904 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1905 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1908 class TestIP6LoadBalance(VppTestCase):
1909 """ IPv6 Load-Balancing """
1912 def setUpClass(cls):
1913 super(TestIP6LoadBalance, cls).setUpClass()
1916 def tearDownClass(cls):
1917 super(TestIP6LoadBalance, cls).tearDownClass()
1920 super(TestIP6LoadBalance, self).setUp()
1922 self.create_pg_interfaces(range(5))
1924 mpls_tbl = VppMplsTable(self, 0)
1925 mpls_tbl.add_vpp_config()
1927 for i in self.pg_interfaces:
1934 for i in self.pg_interfaces:
1938 super(TestIP6LoadBalance, self).tearDown()
1940 def pg_send(self, input, pkts):
1941 self.vapi.cli("clear trace")
1942 input.add_stream(pkts)
1943 self.pg_enable_capture(self.pg_interfaces)
1946 def send_and_expect_load_balancing(self, input, pkts, outputs):
1947 self.pg_send(input, pkts)
1950 rx = oo._get_capture(1)
1951 self.assertNotEqual(0, len(rx))
1955 def send_and_expect_one_itf(self, input, pkts, itf):
1956 self.pg_send(input, pkts)
1957 rx = itf.get_capture(len(pkts))
1959 def test_ip6_load_balance(self):
1960 """ IPv6 Load-Balancing """
1963 # An array of packets that differ only in the destination port
1967 # - MPLS non-EOS with an entropy label
1971 port_mpls_neos_pkts = []
1975 # An array of packets that differ only in the source address
1980 for ii in range(NUM_PKTS):
1982 IPv6(dst="3000::1", src="3000:1::1") /
1983 inet6.UDP(sport=1234, dport=1234 + ii) /
1985 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1986 dst=self.pg0.local_mac) /
1988 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1989 dst=self.pg0.local_mac) /
1990 MPLS(label=66, ttl=2) /
1992 port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1993 dst=self.pg0.local_mac) /
1994 MPLS(label=67, ttl=2) /
1995 MPLS(label=77, ttl=2) /
1997 port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1998 dst=self.pg0.local_mac) /
1999 MPLS(label=67, ttl=2) /
2000 MPLS(label=14, ttl=2) /
2001 MPLS(label=999, ttl=2) /
2004 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
2005 inet6.UDP(sport=1234, dport=1234) /
2007 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
2008 dst=self.pg0.local_mac) /
2010 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
2011 dst=self.pg0.local_mac) /
2012 MPLS(label=66, ttl=2) /
2016 # A route for the IP packets
2018 route_3000_1 = VppIpRoute(self, "3000::1", 128,
2019 [VppRoutePath(self.pg1.remote_ip6,
2020 self.pg1.sw_if_index),
2021 VppRoutePath(self.pg2.remote_ip6,
2022 self.pg2.sw_if_index)])
2023 route_3000_1.add_vpp_config()
2026 # a local-label for the EOS packets
2028 binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
2029 binding.add_vpp_config()
2032 # An MPLS route for the non-EOS packets
2034 route_67 = VppMplsRoute(self, 67, 0,
2035 [VppRoutePath(self.pg1.remote_ip6,
2036 self.pg1.sw_if_index,
2038 VppRoutePath(self.pg2.remote_ip6,
2039 self.pg2.sw_if_index,
2041 route_67.add_vpp_config()
2044 # inject the packet on pg0 - expect load-balancing across the 2 paths
2045 # - since the default hash config is to use IP src,dst and port
2047 # We are not going to ensure equal amounts of packets across each link,
2048 # since the hash algorithm is statistical and therefore this can never
2049 # be guaranteed. But with 64 different packets we do expect some
2050 # balancing. So instead just ensure there is traffic on each link.
2052 rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
2053 [self.pg1, self.pg2])
2054 n_ip_pg0 = len(rx[0])
2055 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
2056 [self.pg1, self.pg2])
2057 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
2058 [self.pg1, self.pg2])
2059 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2060 [self.pg1, self.pg2])
2061 rx = self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
2062 [self.pg1, self.pg2])
2063 n_mpls_pg0 = len(rx[0])
2066 # change the router ID and expect the distribution changes
2068 self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111)
2070 rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
2071 [self.pg1, self.pg2])
2072 self.assertNotEqual(n_ip_pg0, len(rx[0]))
2074 rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2075 [self.pg1, self.pg2])
2076 self.assertNotEqual(n_mpls_pg0, len(rx[0]))
2079 # The packets with Entropy label in should not load-balance,
2080 # since the Entropy value is fixed.
2082 self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
2085 # change the flow hash config so it's only IP src,dst
2086 # - now only the stream with differing source address will
2089 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, proto=1,
2090 sport=0, dport=0, is_ipv6=1)
2092 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
2093 [self.pg1, self.pg2])
2094 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
2095 [self.pg1, self.pg2])
2096 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
2099 # change the flow hash config back to defaults
2101 self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1,
2105 # Recursive prefixes
2106 # - testing that 2 stages of load-balancing occurs and there is no
2107 # polarisation (i.e. only 2 of 4 paths are used)
2112 for ii in range(257):
2113 port_pkts.append((Ether(src=self.pg0.remote_mac,
2114 dst=self.pg0.local_mac) /
2117 inet6.UDP(sport=1234,
2119 Raw(b'\xa5' * 100)))
2120 src_pkts.append((Ether(src=self.pg0.remote_mac,
2121 dst=self.pg0.local_mac) /
2123 src="4000:1::%d" % ii) /
2124 inet6.UDP(sport=1234, dport=1234) /
2125 Raw(b'\xa5' * 100)))
2127 route_3000_2 = VppIpRoute(self, "3000::2", 128,
2128 [VppRoutePath(self.pg3.remote_ip6,
2129 self.pg3.sw_if_index),
2130 VppRoutePath(self.pg4.remote_ip6,
2131 self.pg4.sw_if_index)])
2132 route_3000_2.add_vpp_config()
2134 route_4000_1 = VppIpRoute(self, "4000::1", 128,
2135 [VppRoutePath("3000::1",
2137 VppRoutePath("3000::2",
2139 route_4000_1.add_vpp_config()
2142 # inject the packet on pg0 - expect load-balancing across all 4 paths
2144 self.vapi.cli("clear trace")
2145 self.send_and_expect_load_balancing(self.pg0, port_pkts,
2146 [self.pg1, self.pg2,
2147 self.pg3, self.pg4])
2148 self.send_and_expect_load_balancing(self.pg0, src_pkts,
2149 [self.pg1, self.pg2,
2150 self.pg3, self.pg4])
2153 # Recursive prefixes
2154 # - testing that 2 stages of load-balancing no choices
2158 for ii in range(257):
2159 port_pkts.append((Ether(src=self.pg0.remote_mac,
2160 dst=self.pg0.local_mac) /
2163 inet6.UDP(sport=1234,
2165 Raw(b'\xa5' * 100)))
2167 route_5000_2 = VppIpRoute(self, "5000::2", 128,
2168 [VppRoutePath(self.pg3.remote_ip6,
2169 self.pg3.sw_if_index)])
2170 route_5000_2.add_vpp_config()
2172 route_6000_1 = VppIpRoute(self, "6000::1", 128,
2173 [VppRoutePath("5000::2",
2175 route_6000_1.add_vpp_config()
2178 # inject the packet on pg0 - expect load-balancing across all 4 paths
2180 self.vapi.cli("clear trace")
2181 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
2184 class IP6PuntSetup(object):
2185 """ Setup for IPv6 Punt Police/Redirect """
2187 def punt_setup(self):
2188 self.create_pg_interfaces(range(4))
2190 for i in self.pg_interfaces:
2195 self.pkt = (Ether(src=self.pg0.remote_mac,
2196 dst=self.pg0.local_mac) /
2197 IPv6(src=self.pg0.remote_ip6,
2198 dst=self.pg0.local_ip6) /
2199 inet6.TCP(sport=1234, dport=1234) /
2202 def punt_teardown(self):
2203 for i in self.pg_interfaces:
2208 class TestIP6Punt(IP6PuntSetup, VppTestCase):
2209 """ IPv6 Punt Police/Redirect """
2212 super(TestIP6Punt, self).setUp()
2213 super(TestIP6Punt, self).punt_setup()
2216 super(TestIP6Punt, self).punt_teardown()
2217 super(TestIP6Punt, self).tearDown()
2219 def test_ip_punt(self):
2220 """ IP6 punt police and redirect """
2222 pkts = self.pkt * 1025
2225 # Configure a punt redirect via pg1.
2227 nh_addr = self.pg1.remote_ip6
2228 ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2229 self.pg1.sw_if_index, nh_addr)
2230 ip_punt_redirect.add_vpp_config()
2232 self.send_and_expect(self.pg0, pkts, self.pg1)
2237 policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1)
2238 policer.add_vpp_config()
2239 ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
2241 ip_punt_policer.add_vpp_config()
2243 self.vapi.cli("clear trace")
2244 self.pg0.add_stream(pkts)
2245 self.pg_enable_capture(self.pg_interfaces)
2249 # the number of packet received should be greater than 0,
2250 # but not equal to the number sent, since some were policed
2252 rx = self.pg1._get_capture(1)
2253 stats = policer.get_stats()
2255 # Single rate policer - expect conform, violate but no exceed
2256 self.assertGreater(stats['conform_packets'], 0)
2257 self.assertEqual(stats['exceed_packets'], 0)
2258 self.assertGreater(stats['violate_packets'], 0)
2260 self.assertGreater(len(rx), 0)
2261 self.assertLess(len(rx), len(pkts))
2264 # remove the policer. back to full rx
2266 ip_punt_policer.remove_vpp_config()
2267 policer.remove_vpp_config()
2268 self.send_and_expect(self.pg0, pkts, self.pg1)
2271 # remove the redirect. expect full drop.
2273 ip_punt_redirect.remove_vpp_config()
2274 self.send_and_assert_no_replies(self.pg0, pkts,
2275 "IP no punt config")
2278 # Add a redirect that is not input port selective
2280 ip_punt_redirect = VppIpPuntRedirect(self, 0xffffffff,
2281 self.pg1.sw_if_index, nh_addr)
2282 ip_punt_redirect.add_vpp_config()
2283 self.send_and_expect(self.pg0, pkts, self.pg1)
2284 ip_punt_redirect.remove_vpp_config()
2286 def test_ip_punt_dump(self):
2287 """ IP6 punt redirect dump"""
2290 # Configure a punt redirects
2292 nh_address = self.pg3.remote_ip6
2293 ipr_03 = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2294 self.pg3.sw_if_index, nh_address)
2295 ipr_13 = VppIpPuntRedirect(self, self.pg1.sw_if_index,
2296 self.pg3.sw_if_index, nh_address)
2297 ipr_23 = VppIpPuntRedirect(self, self.pg2.sw_if_index,
2298 self.pg3.sw_if_index, '0::0')
2299 ipr_03.add_vpp_config()
2300 ipr_13.add_vpp_config()
2301 ipr_23.add_vpp_config()
2304 # Dump pg0 punt redirects
2306 self.assertTrue(ipr_03.query_vpp_config())
2307 self.assertTrue(ipr_13.query_vpp_config())
2308 self.assertTrue(ipr_23.query_vpp_config())
2311 # Dump punt redirects for all interfaces
2313 punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2314 self.assertEqual(len(punts), 3)
2316 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2317 self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6)
2318 self.assertEqual(str(punts[2].punt.nh), '::')
2321 class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase):
2322 """ IPv6 Punt Police/Redirect """
2323 worker_config = "workers 2"
2326 super(TestIP6PuntHandoff, self).setUp()
2327 super(TestIP6PuntHandoff, self).punt_setup()
2330 super(TestIP6PuntHandoff, self).punt_teardown()
2331 super(TestIP6PuntHandoff, self).tearDown()
2333 def test_ip_punt(self):
2334 """ IP6 punt policer thread handoff """
2335 pkts = self.pkt * NUM_PKTS
2338 # Configure a punt redirect via pg1.
2340 nh_addr = self.pg1.remote_ip6
2341 ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
2342 self.pg1.sw_if_index, nh_addr)
2343 ip_punt_redirect.add_vpp_config()
2345 action_tx = PolicerAction(
2346 VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
2349 # This policer drops no packets, we are just
2350 # testing that they get to the right thread.
2352 policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, 1,
2353 0, 0, False, action_tx, action_tx, action_tx)
2354 policer.add_vpp_config()
2355 ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index,
2357 ip_punt_policer.add_vpp_config()
2359 for worker in [0, 1]:
2360 self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2362 self.logger.debug(self.vapi.cli("show trace max 100"))
2364 # Combined stats, all threads
2365 stats = policer.get_stats()
2367 # Single rate policer - expect conform, violate but no exceed
2368 self.assertGreater(stats['conform_packets'], 0)
2369 self.assertEqual(stats['exceed_packets'], 0)
2370 self.assertGreater(stats['violate_packets'], 0)
2372 # Worker 0, should have done all the policing
2373 stats0 = policer.get_stats(worker=0)
2374 self.assertEqual(stats, stats0)
2376 # Worker 1, should have handed everything off
2377 stats1 = policer.get_stats(worker=1)
2378 self.assertEqual(stats1['conform_packets'], 0)
2379 self.assertEqual(stats1['exceed_packets'], 0)
2380 self.assertEqual(stats1['violate_packets'], 0)
2382 # Bind the policer to worker 1 and repeat
2383 policer.bind_vpp_config(1, True)
2384 for worker in [0, 1]:
2385 self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2386 self.logger.debug(self.vapi.cli("show trace max 100"))
2388 # The 2 workers should now have policed the same amount
2389 stats = policer.get_stats()
2390 stats0 = policer.get_stats(worker=0)
2391 stats1 = policer.get_stats(worker=1)
2393 self.assertGreater(stats0['conform_packets'], 0)
2394 self.assertEqual(stats0['exceed_packets'], 0)
2395 self.assertGreater(stats0['violate_packets'], 0)
2397 self.assertGreater(stats1['conform_packets'], 0)
2398 self.assertEqual(stats1['exceed_packets'], 0)
2399 self.assertGreater(stats1['violate_packets'], 0)
2401 self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
2402 stats['conform_packets'])
2404 self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
2405 stats['violate_packets'])
2407 # Unbind the policer and repeat
2408 policer.bind_vpp_config(1, False)
2409 for worker in [0, 1]:
2410 self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
2411 self.logger.debug(self.vapi.cli("show trace max 100"))
2413 # The policer should auto-bind to worker 0 when packets arrive
2414 stats = policer.get_stats()
2415 stats0new = policer.get_stats(worker=0)
2416 stats1new = policer.get_stats(worker=1)
2418 self.assertGreater(stats0new['conform_packets'],
2419 stats0['conform_packets'])
2420 self.assertEqual(stats0new['exceed_packets'], 0)
2421 self.assertGreater(stats0new['violate_packets'],
2422 stats0['violate_packets'])
2424 self.assertEqual(stats1, stats1new)
2429 ip_punt_policer.remove_vpp_config()
2430 policer.remove_vpp_config()
2431 ip_punt_redirect.remove_vpp_config()
2434 class TestIPDeag(VppTestCase):
2435 """ IPv6 Deaggregate Routes """
2438 def setUpClass(cls):
2439 super(TestIPDeag, cls).setUpClass()
2442 def tearDownClass(cls):
2443 super(TestIPDeag, cls).tearDownClass()
2446 super(TestIPDeag, self).setUp()
2448 self.create_pg_interfaces(range(3))
2450 for i in self.pg_interfaces:
2456 super(TestIPDeag, self).tearDown()
2457 for i in self.pg_interfaces:
2461 def test_ip_deag(self):
2462 """ IP Deag Routes """
2465 # Create a table to be used for:
2466 # 1 - another destination address lookup
2467 # 2 - a source address lookup
2469 table_dst = VppIpTable(self, 1, is_ip6=1)
2470 table_src = VppIpTable(self, 2, is_ip6=1)
2471 table_dst.add_vpp_config()
2472 table_src.add_vpp_config()
2475 # Add a route in the default table to point to a deag/
2476 # second lookup in each of these tables
2478 route_to_dst = VppIpRoute(self, "1::1", 128,
2482 route_to_src = VppIpRoute(
2487 type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)])
2489 route_to_dst.add_vpp_config()
2490 route_to_src.add_vpp_config()
2493 # packets to these destination are dropped, since they'll
2494 # hit the respective default routes in the second table
2496 p_dst = (Ether(src=self.pg0.remote_mac,
2497 dst=self.pg0.local_mac) /
2498 IPv6(src="5::5", dst="1::1") /
2499 inet6.TCP(sport=1234, dport=1234) /
2501 p_src = (Ether(src=self.pg0.remote_mac,
2502 dst=self.pg0.local_mac) /
2503 IPv6(src="2::2", dst="1::2") /
2504 inet6.TCP(sport=1234, dport=1234) /
2506 pkts_dst = p_dst * 257
2507 pkts_src = p_src * 257
2509 self.send_and_assert_no_replies(self.pg0, pkts_dst,
2511 self.send_and_assert_no_replies(self.pg0, pkts_src,
2515 # add a route in the dst table to forward via pg1
2517 route_in_dst = VppIpRoute(self, "1::1", 128,
2518 [VppRoutePath(self.pg1.remote_ip6,
2519 self.pg1.sw_if_index)],
2521 route_in_dst.add_vpp_config()
2523 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2526 # add a route in the src table to forward via pg2
2528 route_in_src = VppIpRoute(self, "2::2", 128,
2529 [VppRoutePath(self.pg2.remote_ip6,
2530 self.pg2.sw_if_index)],
2532 route_in_src.add_vpp_config()
2533 self.send_and_expect(self.pg0, pkts_src, self.pg2)
2536 # loop in the lookup DP
2538 route_loop = VppIpRoute(self, "3::3", 128,
2541 route_loop.add_vpp_config()
2543 p_l = (Ether(src=self.pg0.remote_mac,
2544 dst=self.pg0.local_mac) /
2545 IPv6(src="3::4", dst="3::3") /
2546 inet6.TCP(sport=1234, dport=1234) /
2549 self.send_and_assert_no_replies(self.pg0, p_l * 257,
2553 class TestIP6Input(VppTestCase):
2554 """ IPv6 Input Exception Test Cases """
2557 def setUpClass(cls):
2558 super(TestIP6Input, cls).setUpClass()
2561 def tearDownClass(cls):
2562 super(TestIP6Input, cls).tearDownClass()
2565 super(TestIP6Input, self).setUp()
2567 self.create_pg_interfaces(range(2))
2569 for i in self.pg_interfaces:
2575 super(TestIP6Input, self).tearDown()
2576 for i in self.pg_interfaces:
2580 def test_ip_input_icmp_reply(self):
2581 """ IP6 Input Exception - Return ICMP (3,0) """
2583 # hop limit - ICMP replies
2585 p_version = (Ether(src=self.pg0.remote_mac,
2586 dst=self.pg0.local_mac) /
2587 IPv6(src=self.pg0.remote_ip6,
2588 dst=self.pg1.remote_ip6,
2590 inet6.UDP(sport=1234, dport=1234) /
2593 rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0)
2595 icmp = rx[ICMPv6TimeExceeded]
2597 # 0: "hop limit exceeded in transit",
2598 self.assertEqual((icmp.type, icmp.code), (3, 0))
2600 icmpv6_data = '\x0a' * 18
2602 all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF"
2604 @parameterized.expand([
2605 # Name, src, dst, l4proto, msg, timeout
2606 ("src='iface', dst='iface'", None, None,
2607 inet6.UDP(sport=1234, dport=1234), "funky version", None),
2608 ("src='All 0's', dst='iface'", all_0s, None,
2609 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2610 ("src='iface', dst='All 0's'", None, all_0s,
2611 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2612 ("src='All 1's', dst='iface'", all_1s, None,
2613 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2614 ("src='iface', dst='All 1's'", None, all_1s,
2615 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2616 ("src='All 1's', dst='All 1's'", all_1s, all_1s,
2617 ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1),
2620 def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout):
2622 self._testMethodDoc = 'IPv6 Input Exception - %s' % name
2624 p_version = (Ether(src=self.pg0.remote_mac,
2625 dst=self.pg0.local_mac) /
2626 IPv6(src=src or self.pg0.remote_ip6,
2627 dst=dst or self.pg1.remote_ip6,
2632 self.send_and_assert_no_replies(self.pg0, p_version * NUM_PKTS,
2636 def test_hop_by_hop(self):
2637 """ Hop-by-hop header test """
2639 p = (Ether(src=self.pg0.remote_mac,
2640 dst=self.pg0.local_mac) /
2641 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
2642 IPv6ExtHdrHopByHop() /
2643 inet6.UDP(sport=1234, dport=1234) /
2646 self.pg0.add_stream(p)
2647 self.pg_enable_capture(self.pg_interfaces)
2651 class TestIPReplace(VppTestCase):
2652 """ IPv6 Table Replace """
2655 def setUpClass(cls):
2656 super(TestIPReplace, cls).setUpClass()
2659 def tearDownClass(cls):
2660 super(TestIPReplace, cls).tearDownClass()
2663 super(TestIPReplace, self).setUp()
2665 self.create_pg_interfaces(range(4))
2670 for i in self.pg_interfaces:
2673 i.generate_remote_hosts(2)
2674 self.tables.append(VppIpTable(self, table_id,
2675 True).add_vpp_config())
2679 super(TestIPReplace, self).tearDown()
2680 for i in self.pg_interfaces:
2684 def test_replace(self):
2685 """ IP Table Replace """
2687 MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t
2688 MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t
2690 links = [self.pg0, self.pg1, self.pg2, self.pg3]
2691 routes = [[], [], [], []]
2693 # the sizes of 'empty' tables
2694 for t in self.tables:
2695 self.assertEqual(len(t.dump()), 2)
2696 self.assertEqual(len(t.mdump()), 5)
2698 # load up the tables with some routes
2699 for ii, t in enumerate(self.tables):
2700 for jj in range(1, N_ROUTES):
2702 self, "2001::%d" % jj if jj != 0 else "2001::", 128,
2703 [VppRoutePath(links[ii].remote_hosts[0].ip6,
2704 links[ii].sw_if_index),
2705 VppRoutePath(links[ii].remote_hosts[1].ip6,
2706 links[ii].sw_if_index)],
2707 table_id=t.table_id).add_vpp_config()
2708 multi = VppIpMRoute(
2710 "ff:2001::%d" % jj, 128,
2711 MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE,
2712 [VppMRoutePath(self.pg0.sw_if_index,
2713 MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT,
2714 proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2715 VppMRoutePath(self.pg1.sw_if_index,
2716 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2717 proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2718 VppMRoutePath(self.pg2.sw_if_index,
2719 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2720 proto=FibPathProto.FIB_PATH_NH_PROTO_IP6),
2721 VppMRoutePath(self.pg3.sw_if_index,
2722 MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD,
2723 proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)],
2724 table_id=t.table_id).add_vpp_config()
2725 routes[ii].append({'uni': uni,
2729 # replace the tables a few times
2732 # replace each table
2733 for t in self.tables:
2736 # all the routes are still there
2737 for ii, t in enumerate(self.tables):
2740 for r in routes[ii]:
2741 self.assertTrue(find_route_in_dump(dump, r['uni'], t))
2742 self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t))
2744 # redownload the even numbered routes
2745 for ii, t in enumerate(self.tables):
2746 for jj in range(0, N_ROUTES, 2):
2747 routes[ii][jj]['uni'].add_vpp_config()
2748 routes[ii][jj]['multi'].add_vpp_config()
2750 # signal each table converged
2751 for t in self.tables:
2754 # we should find the even routes, but not the odd
2755 for ii, t in enumerate(self.tables):
2758 for jj in range(0, N_ROUTES, 2):
2759 self.assertTrue(find_route_in_dump(
2760 dump, routes[ii][jj]['uni'], t))
2761 self.assertTrue(find_mroute_in_dump(
2762 mdump, routes[ii][jj]['multi'], t))
2763 for jj in range(1, N_ROUTES - 1, 2):
2764 self.assertFalse(find_route_in_dump(
2765 dump, routes[ii][jj]['uni'], t))
2766 self.assertFalse(find_mroute_in_dump(
2767 mdump, routes[ii][jj]['multi'], t))
2769 # reload all the routes
2770 for ii, t in enumerate(self.tables):
2771 for r in routes[ii]:
2772 r['uni'].add_vpp_config()
2773 r['multi'].add_vpp_config()
2775 # all the routes are still there
2776 for ii, t in enumerate(self.tables):
2779 for r in routes[ii]:
2780 self.assertTrue(find_route_in_dump(dump, r['uni'], t))
2781 self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t))
2784 # finally flush the tables for good measure
2786 for t in self.tables:
2788 self.assertEqual(len(t.dump()), 2)
2789 self.assertEqual(len(t.mdump()), 5)
2792 class TestIP6Replace(VppTestCase):
2793 """ IPv4 Interface Address Replace """
2796 def setUpClass(cls):
2797 super(TestIP6Replace, cls).setUpClass()
2800 def tearDownClass(cls):
2801 super(TestIP6Replace, cls).tearDownClass()
2804 super(TestIP6Replace, self).setUp()
2806 self.create_pg_interfaces(range(4))
2808 for i in self.pg_interfaces:
2812 super(TestIP6Replace, self).tearDown()
2813 for i in self.pg_interfaces:
2816 def get_n_pfxs(self, intf):
2817 return len(self.vapi.ip_address_dump(intf.sw_if_index, True))
2819 def test_replace(self):
2820 """ IP interface address replace """
2822 intf_pfxs = [[], [], [], []]
2824 # add prefixes to each of the interfaces
2825 for i in range(len(self.pg_interfaces)):
2826 intf = self.pg_interfaces[i]
2829 addr = "2001:16:%d::1" % intf.sw_if_index
2830 a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2831 intf_pfxs[i].append(a)
2833 # 2001:16:x::2/64 - a different address in the same subnet as above
2834 addr = "2001:16:%d::2" % intf.sw_if_index
2835 a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2836 intf_pfxs[i].append(a)
2838 # 2001:15:x::2/64 - a different address and subnet
2839 addr = "2001:15:%d::2" % intf.sw_if_index
2840 a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2841 intf_pfxs[i].append(a)
2843 # a dump should n_address in it
2844 for intf in self.pg_interfaces:
2845 self.assertEqual(self.get_n_pfxs(intf), 3)
2848 # remove all the address thru a replace
2850 self.vapi.sw_interface_address_replace_begin()
2851 self.vapi.sw_interface_address_replace_end()
2852 for intf in self.pg_interfaces:
2853 self.assertEqual(self.get_n_pfxs(intf), 0)
2856 # add all the interface addresses back
2861 for intf in self.pg_interfaces:
2862 self.assertEqual(self.get_n_pfxs(intf), 3)
2865 # replace again, but this time update/re-add the address on the first
2868 self.vapi.sw_interface_address_replace_begin()
2870 for p in intf_pfxs[:2]:
2874 self.vapi.sw_interface_address_replace_end()
2876 # on the first two the address still exist,
2877 # on the other two they do not
2878 for intf in self.pg_interfaces[:2]:
2879 self.assertEqual(self.get_n_pfxs(intf), 3)
2880 for p in intf_pfxs[:2]:
2882 self.assertTrue(v.query_vpp_config())
2883 for intf in self.pg_interfaces[2:]:
2884 self.assertEqual(self.get_n_pfxs(intf), 0)
2887 # add all the interface addresses back on the last two
2889 for p in intf_pfxs[2:]:
2892 for intf in self.pg_interfaces:
2893 self.assertEqual(self.get_n_pfxs(intf), 3)
2896 # replace again, this time add different prefixes on all the interfaces
2898 self.vapi.sw_interface_address_replace_begin()
2901 for intf in self.pg_interfaces:
2903 addr = "2001:18:%d::1" % intf.sw_if_index
2904 pfxs.append(VppIpInterfaceAddress(self, intf, addr,
2905 64).add_vpp_config())
2907 self.vapi.sw_interface_address_replace_end()
2909 # only .18 should exist on each interface
2910 for intf in self.pg_interfaces:
2911 self.assertEqual(self.get_n_pfxs(intf), 1)
2913 self.assertTrue(pfx.query_vpp_config())
2918 self.vapi.sw_interface_address_replace_begin()
2919 self.vapi.sw_interface_address_replace_end()
2920 for intf in self.pg_interfaces:
2921 self.assertEqual(self.get_n_pfxs(intf), 0)
2924 # add prefixes to each interface. post-begin add the prefix from
2925 # interface X onto interface Y. this would normally be an error
2926 # since it would generate a 'duplicate address' warning. but in
2927 # this case, since what is newly downloaded is sane, it's ok
2929 for intf in self.pg_interfaces:
2931 addr = "2001:18:%d::1" % intf.sw_if_index
2932 VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()
2934 self.vapi.sw_interface_address_replace_begin()
2937 for intf in self.pg_interfaces:
2939 addr = "2001:18:%d::1" % (intf.sw_if_index + 1)
2940 pfxs.append(VppIpInterfaceAddress(self, intf,
2941 addr, 64).add_vpp_config())
2943 self.vapi.sw_interface_address_replace_end()
2945 self.logger.info(self.vapi.cli("sh int addr"))
2947 for intf in self.pg_interfaces:
2948 self.assertEqual(self.get_n_pfxs(intf), 1)
2950 self.assertTrue(pfx.query_vpp_config())
2953 class TestIP6LinkLocal(VppTestCase):
2954 """ IPv6 Link Local """
2957 def setUpClass(cls):
2958 super(TestIP6LinkLocal, cls).setUpClass()
2961 def tearDownClass(cls):
2962 super(TestIP6LinkLocal, cls).tearDownClass()
2965 super(TestIP6LinkLocal, self).setUp()
2967 self.create_pg_interfaces(range(2))
2969 for i in self.pg_interfaces:
2973 super(TestIP6LinkLocal, self).tearDown()
2974 for i in self.pg_interfaces:
2977 def test_ip6_ll(self):
2978 """ IPv6 Link Local """
2981 # two APIs to add a link local address.
2982 # 1 - just like any other prefix
2983 # 2 - with the special set LL API
2987 # First with the API to set a 'normal' prefix
2993 VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config()
2996 # should be able to ping the ll
2998 p_echo_request_1 = (Ether(src=self.pg0.remote_mac,
2999 dst=self.pg0.local_mac) /
3002 ICMPv6EchoRequest())
3004 self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0)
3007 # change the link-local on pg0
3009 v_ll3 = VppIpInterfaceAddress(self, self.pg0,
3010 ll3, 128).add_vpp_config()
3012 p_echo_request_3 = (Ether(src=self.pg0.remote_mac,
3013 dst=self.pg0.local_mac) /
3016 ICMPv6EchoRequest())
3018 self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
3021 # set a normal v6 prefix on the link
3023 self.pg0.config_ip6()
3025 self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0)
3027 # the link-local cannot be removed
3028 with self.vapi.assert_negative_api_retval():
3029 v_ll3.remove_vpp_config()
3032 # Use the specific link-local API on pg1
3034 VppIp6LinkLocalAddress(self, self.pg1, ll1).add_vpp_config()
3035 self.send_and_expect(self.pg1, [p_echo_request_1], self.pg1)
3037 VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config()
3038 self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1)
3041 class TestIPv6PathMTU(VppTestCase):
3042 """ IPv6 Path MTU """
3045 super(TestIPv6PathMTU, self).setUp()
3047 self.create_pg_interfaces(range(2))
3049 # setup all interfaces
3050 for i in self.pg_interfaces:
3056 super(TestIPv6PathMTU, self).tearDown()
3057 for i in self.pg_interfaces:
3061 def test_path_mtu_local(self):
3062 """ Path MTU for attached neighbour """
3064 self.vapi.cli("set log class ip level debug")
3066 # The goal here is not test that fragmentation works correctly,
3067 # that's done elsewhere, the intent is to ensure that the Path MTU
3068 # settings are honoured.
3072 # IPv6 will only frag locally generated packets, so use tunnelled
3073 # packets post encap
3075 tun = VppIpIpTunInterface(
3079 self.pg1.remote_ip6)
3080 tun.add_vpp_config()
3084 # set the interface MTU to a reasonable value
3085 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3088 p_2k = (Ether(dst=self.pg0.local_mac,
3089 src=self.pg0.remote_mac) /
3090 IPv6(src=self.pg0.remote_ip6,
3091 dst=tun.remote_ip6) /
3092 UDP(sport=1234, dport=5678) /
3094 p_1k = (Ether(dst=self.pg0.local_mac,
3095 src=self.pg0.remote_mac) /
3096 IPv6(src=self.pg0.remote_ip6,
3097 dst=tun.remote_ip6) /
3098 UDP(sport=1234, dport=5678) /
3101 nbr = VppNeighbor(self,
3102 self.pg1.sw_if_index,
3103 self.pg1.remote_mac,
3104 self.pg1.remote_ip6).add_vpp_config()
3106 # this is now the interface MTU frags
3107 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3108 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3110 # drop the path MTU for this neighbour to below the interface MTU
3112 pmtu = VppIpPathMtu(self, self.pg1.remote_ip6, 1300).add_vpp_config()
3114 # print/format the adj delegate and trackers
3115 self.logger.info(self.vapi.cli("sh ip pmtu"))
3116 self.logger.info(self.vapi.cli("sh adj 7"))
3118 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3119 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3121 # increase the path MTU to more than the interface
3122 # expect to use the interface MTU
3125 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3126 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3128 # go back to an MTU from the path
3131 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3132 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3134 # raise the interface's MTU
3135 # should still use that of the path
3136 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3138 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3139 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3141 # set path high and interface low
3143 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3145 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3146 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3148 # remove the path MTU
3149 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3153 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3154 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3156 def test_path_mtu_remote(self):
3157 """ Path MTU for remote neighbour """
3159 self.vapi.cli("set log class ip level debug")
3161 # The goal here is not test that fragmentation works correctly,
3162 # that's done elsewhere, the intent is to ensure that the Path MTU
3163 # settings are honoured.
3169 [VppRoutePath(self.pg1.remote_ip6,
3170 self.pg1.sw_if_index)]).add_vpp_config()
3173 # IPv6 will only frag locally generated packets, so use tunnelled
3174 # packets post encap
3176 tun = VppIpIpTunInterface(
3181 tun.add_vpp_config()
3185 # set the interface MTU to a reasonable value
3186 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3189 p_2k = (Ether(dst=self.pg0.local_mac,
3190 src=self.pg0.remote_mac) /
3191 IPv6(src=self.pg0.remote_ip6,
3192 dst=tun.remote_ip6) /
3193 UDP(sport=1234, dport=5678) /
3195 p_1k = (Ether(dst=self.pg0.local_mac,
3196 src=self.pg0.remote_mac) /
3197 IPv6(src=self.pg0.remote_ip6,
3198 dst=tun.remote_ip6) /
3199 UDP(sport=1234, dport=5678) /
3202 nbr = VppNeighbor(self,
3203 self.pg1.sw_if_index,
3204 self.pg1.remote_mac,
3205 self.pg1.remote_ip6).add_vpp_config()
3207 # this is now the interface MTU frags
3208 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3209 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3211 # drop the path MTU for this neighbour to below the interface MTU
3213 pmtu = VppIpPathMtu(self, tun_dst, 1300).add_vpp_config()
3215 # print/format the fib entry/dpo
3216 self.logger.info(self.vapi.cli("sh ip6 fib 2001::1"))
3218 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3219 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3221 # increase the path MTU to more than the interface
3222 # expect to use the interface MTU
3225 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3226 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3228 # go back to an MTU from the path
3231 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3232 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3234 # raise the interface's MTU
3235 # should still use that of the path
3236 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3238 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3239 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3241 # turn the tun_dst into an attached neighbour
3242 route.modify([VppRoutePath("::",
3243 self.pg1.sw_if_index)])
3244 nbr2 = VppNeighbor(self,
3245 self.pg1.sw_if_index,
3246 self.pg1.remote_mac,
3247 tun_dst).add_vpp_config()
3249 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3250 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3252 # add back to not attached
3253 nbr2.remove_vpp_config()
3254 route.modify([VppRoutePath(self.pg1.remote_ip6,
3255 self.pg1.sw_if_index)])
3257 # set path high and interface low
3259 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3261 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
3262 self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
3264 # remove the path MTU
3265 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
3267 pmtu.remove_vpp_config()
3268 self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
3269 self.send_and_expect(self.pg0, [p_1k], self.pg1)
3272 if __name__ == '__main__':
3273 unittest.main(testRunner=VppTestRunner)