6 from framework import VppTestCase, VppTestRunner
7 from util import ppp, ip6_normalize
8 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
9 from vpp_pg_interface import is_ipv6_misc
10 from vpp_ip import DpoProto
11 from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
12 VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
13 VppMplsRoute, VppMplsTable, VppIpTable, VppIpAddress
14 from vpp_neighbor import find_nbr, VppNeighbor
16 from scapy.packet import Raw
17 from scapy.layers.l2 import Ether, Dot1Q
18 import scapy.layers.inet6 as inet6
19 from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \
20 ICMPv6ND_RA, getmacbyip6, ICMPv6MRD_Solicitation, \
21 ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
22 ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
23 ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply
24 from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
25 in6_mactoifaceid, in6_ismaddr
26 from scapy.utils import inet_pton, inet_ntop
27 from scapy.contrib.mpls import MPLS
29 AF_INET6 = socket.AF_INET6
33 euid = in6_mactoifaceid(mac)
34 addr = "fe80::" + euid
38 class TestIPv6ND(VppTestCase):
39 def validate_ra(self, intf, rx, dst_ip=None):
41 dst_ip = intf.remote_ip6
43 # unicasted packets must come to the unicast mac
44 self.assertEqual(rx[Ether].dst, intf.remote_mac)
46 # and from the router's MAC
47 self.assertEqual(rx[Ether].src, intf.local_mac)
49 # the rx'd RA should be addressed to the sender's source
50 self.assertTrue(rx.haslayer(ICMPv6ND_RA))
51 self.assertEqual(in6_ptop(rx[IPv6].dst),
54 # and come from the router's link local
55 self.assertTrue(in6_islladdr(rx[IPv6].src))
56 self.assertEqual(in6_ptop(rx[IPv6].src),
57 in6_ptop(mk_ll_addr(intf.local_mac)))
59 def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
61 dst_ip = intf.remote_ip6
63 dst_ip = intf.local_ip6
65 # unicasted packets must come to the unicast mac
66 self.assertEqual(rx[Ether].dst, intf.remote_mac)
68 # and from the router's MAC
69 self.assertEqual(rx[Ether].src, intf.local_mac)
71 # the rx'd NA should be addressed to the sender's source
72 self.assertTrue(rx.haslayer(ICMPv6ND_NA))
73 self.assertEqual(in6_ptop(rx[IPv6].dst),
76 # and come from the target address
78 in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
80 # Dest link-layer options should have the router's MAC
81 dll = rx[ICMPv6NDOptDstLLAddr]
82 self.assertEqual(dll.lladdr, intf.local_mac)
84 def validate_ns(self, intf, rx, tgt_ip):
85 nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
86 dst_ip = inet_ntop(AF_INET6, nsma)
89 self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma))
91 # and from the router's MAC
92 self.assertEqual(rx[Ether].src, intf.local_mac)
94 # the rx'd NS should be addressed to an mcast address
95 # derived from the target address
97 in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
99 # expect the tgt IP in the NS header
101 self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
103 # packet is from the router's local address
105 in6_ptop(rx[IPv6].src), intf.local_ip6)
107 # Src link-layer options should have the router's MAC
108 sll = rx[ICMPv6NDOptSrcLLAddr]
109 self.assertEqual(sll.lladdr, intf.local_mac)
111 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
112 filter_out_fn=is_ipv6_misc):
113 intf.add_stream(pkts)
114 self.pg_enable_capture(self.pg_interfaces)
116 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
118 self.assertEqual(len(rx), 1)
120 self.validate_ra(intf, rx, dst_ip)
122 def send_and_expect_na(self, intf, pkts, remark, dst_ip=None,
124 filter_out_fn=is_ipv6_misc):
125 intf.add_stream(pkts)
126 self.pg_enable_capture(self.pg_interfaces)
128 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
130 self.assertEqual(len(rx), 1)
132 self.validate_na(intf, rx, dst_ip, tgt_ip)
134 def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
135 filter_out_fn=is_ipv6_misc):
136 tx_intf.add_stream(pkts)
137 self.pg_enable_capture(self.pg_interfaces)
139 rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
141 self.assertEqual(len(rx), 1)
143 self.validate_ns(rx_intf, rx, tgt_ip)
145 def verify_ip(self, rx, smac, dmac, sip, dip):
147 self.assertEqual(ether.dst, dmac)
148 self.assertEqual(ether.src, smac)
151 self.assertEqual(ip.src, sip)
152 self.assertEqual(ip.dst, dip)
155 class TestIPv6(TestIPv6ND):
156 """ IPv6 Test Case """
160 super(TestIPv6, cls).setUpClass()
164 Perform test setup before test case.
167 - create 3 pg interfaces
168 - untagged pg0 interface
169 - Dot1Q subinterface on pg1
170 - Dot1AD subinterface on pg2
172 - put it into UP state
174 - resolve neighbor address using NDP
175 - configure 200 fib entries
177 :ivar list interfaces: pg interfaces and subinterfaces.
178 :ivar dict flows: IPv4 packet flows in test.
180 *TODO:* Create AD sub interface
182 super(TestIPv6, self).setUp()
184 # create 3 pg interfaces
185 self.create_pg_interfaces(range(3))
187 # create 2 subinterfaces for p1 and pg2
188 self.sub_interfaces = [
189 VppDot1QSubint(self, self.pg1, 100),
190 VppDot1QSubint(self, self.pg2, 200)
191 # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400)
194 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
196 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
197 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
198 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
201 self.pg_if_packet_sizes = [64, 1500, 9020]
203 self.interfaces = list(self.pg_interfaces)
204 self.interfaces.extend(self.sub_interfaces)
206 # setup all interfaces
207 for i in self.interfaces:
212 # config 2M FIB entries
213 self.config_fib_entries(200)
216 """Run standard test teardown and log ``show ip6 neighbors``."""
217 for i in self.interfaces:
221 for i in self.sub_interfaces:
222 i.remove_vpp_config()
224 super(TestIPv6, self).tearDown()
225 if not self.vpp_dead:
226 self.logger.info(self.vapi.cli("show ip6 neighbors"))
227 # info(self.vapi.cli("show ip6 fib")) # many entries
229 def config_fib_entries(self, count):
230 """For each interface add to the FIB table *count* routes to
231 "fd02::1/128" destination with interface's local address as next-hop
234 :param int count: Number of FIB entries.
236 - *TODO:* check if the next-hop address shouldn't be remote address
237 instead of local address.
239 n_int = len(self.interfaces)
242 dest_addr = inet_pton(AF_INET6, "fd02::1")
244 for i in self.interfaces:
245 next_hop_address = i.local_ip6n
246 for j in range(count / n_int):
247 self.vapi.ip_add_del_route(
248 dest_addr, dest_addr_len, next_hop_address, is_ipv6=1)
250 if counter / count * 100 > percent:
251 self.logger.info("Configure %d FIB entries .. %d%% done" %
255 def modify_packet(self, src_if, packet_size, pkt):
256 """Add load, set destination IP and extend packet to required packet
257 size for defined interface.
259 :param VppInterface src_if: Interface to create packet for.
260 :param int packet_size: Required packet size.
261 :param Scapy pkt: Packet to be modified.
263 dst_if_idx = packet_size / 10 % 2
264 dst_if = self.flows[src_if][dst_if_idx]
265 info = self.create_packet_info(src_if, dst_if)
266 payload = self.info_to_payload(info)
267 p = pkt / Raw(payload)
268 p[IPv6].dst = dst_if.remote_ip6
270 if isinstance(src_if, VppSubInterface):
271 p = src_if.add_dot1_layer(p)
272 self.extend_packet(p, packet_size)
276 def create_stream(self, src_if):
277 """Create input packet stream for defined interface.
279 :param VppInterface src_if: Interface to create packet stream for.
281 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
282 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
283 IPv6(src=src_if.remote_ip6) /
284 inet6.UDP(sport=1234, dport=1234))
286 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
287 for i in xrange(self.pg_if_packet_sizes[0],
288 self.pg_if_packet_sizes[1], 10)]
289 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
290 for i in xrange(self.pg_if_packet_sizes[1] + hdr_ext,
291 self.pg_if_packet_sizes[2] + hdr_ext, 50)]
296 def verify_capture(self, dst_if, capture):
297 """Verify captured input packet stream for defined interface.
299 :param VppInterface dst_if: Interface to verify captured packet stream
301 :param list capture: Captured packet stream.
303 self.logger.info("Verifying capture on interface %s" % dst_if.name)
305 for i in self.interfaces:
306 last_info[i.sw_if_index] = None
308 dst_sw_if_index = dst_if.sw_if_index
309 if hasattr(dst_if, 'parent'):
311 for packet in capture:
313 # Check VLAN tags and Ethernet header
314 packet = dst_if.remove_dot1_layer(packet)
315 self.assertTrue(Dot1Q not in packet)
318 udp = packet[inet6.UDP]
319 payload_info = self.payload_to_info(str(packet[Raw]))
320 packet_index = payload_info.index
321 self.assertEqual(payload_info.dst, dst_sw_if_index)
323 "Got packet on port %s: src=%u (id=%u)" %
324 (dst_if.name, payload_info.src, packet_index))
325 next_info = self.get_next_packet_info_for_interface2(
326 payload_info.src, dst_sw_if_index,
327 last_info[payload_info.src])
328 last_info[payload_info.src] = next_info
329 self.assertTrue(next_info is not None)
330 self.assertEqual(packet_index, next_info.index)
331 saved_packet = next_info.data
332 # Check standard fields
334 ip.src, saved_packet[IPv6].src)
336 ip.dst, saved_packet[IPv6].dst)
338 udp.sport, saved_packet[inet6.UDP].sport)
340 udp.dport, saved_packet[inet6.UDP].dport)
342 self.logger.error(ppp("Unexpected or invalid packet:", packet))
344 for i in self.interfaces:
345 remaining_packet = self.get_next_packet_info_for_interface2(
346 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
347 self.assertTrue(remaining_packet is None,
348 "Interface %s: Packet expected from interface %s "
349 "didn't arrive" % (dst_if.name, i.name))
355 - Create IPv6 stream for pg0 interface
356 - Create IPv6 tagged streams for pg1's and pg2's subinterface.
357 - Send and verify received packets on each interface.
360 pkts = self.create_stream(self.pg0)
361 self.pg0.add_stream(pkts)
363 for i in self.sub_interfaces:
364 pkts = self.create_stream(i)
365 i.parent.add_stream(pkts)
367 self.pg_enable_capture(self.pg_interfaces)
370 pkts = self.pg0.get_capture()
371 self.verify_capture(self.pg0, pkts)
373 for i in self.sub_interfaces:
374 pkts = i.parent.get_capture()
375 self.verify_capture(i, pkts)
378 """ IPv6 Neighbour Solicitation Exceptions
381 - Send an NS Sourced from an address not covered by the link sub-net
382 - Send an NS to an mcast address the router has not joined
383 - Send NS for a target address the router does not onn.
387 # An NS from a non link source address
389 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
390 d = inet_ntop(AF_INET6, nsma)
392 p = (Ether(dst=in6_getnsmac(nsma)) /
393 IPv6(dst=d, src="2002::2") /
394 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
395 ICMPv6NDOptSrcLLAddr(
396 lladdr=self.pg0.remote_mac))
399 self.send_and_assert_no_replies(
401 "No response to NS source by address not on sub-net")
404 # An NS for sent to a solicited mcast group the router is
405 # not a member of FAILS
408 nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
409 d = inet_ntop(AF_INET6, nsma)
411 p = (Ether(dst=in6_getnsmac(nsma)) /
412 IPv6(dst=d, src=self.pg0.remote_ip6) /
413 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
414 ICMPv6NDOptSrcLLAddr(
415 lladdr=self.pg0.remote_mac))
418 self.send_and_assert_no_replies(
420 "No response to NS sent to unjoined mcast address")
423 # An NS whose target address is one the router does not own
425 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
426 d = inet_ntop(AF_INET6, nsma)
428 p = (Ether(dst=in6_getnsmac(nsma)) /
429 IPv6(dst=d, src=self.pg0.remote_ip6) /
430 ICMPv6ND_NS(tgt="fd::ffff") /
431 ICMPv6NDOptSrcLLAddr(
432 lladdr=self.pg0.remote_mac))
435 self.send_and_assert_no_replies(self.pg0, pkts,
436 "No response to NS for unknown target")
439 # A neighbor entry that has no associated FIB-entry
441 self.pg0.generate_remote_hosts(4)
442 nd_entry = VppNeighbor(self,
443 self.pg0.sw_if_index,
444 self.pg0.remote_hosts[2].mac,
445 self.pg0.remote_hosts[2].ip6,
448 nd_entry.add_vpp_config()
451 # check we have the neighbor, but no route
453 self.assertTrue(find_nbr(self,
454 self.pg0.sw_if_index,
455 self.pg0._remote_hosts[2].ip6,
457 self.assertFalse(find_route(self,
458 self.pg0._remote_hosts[2].ip6,
463 # send an NS from a link local address to the interface's global
466 p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
468 dst=d, src=self.pg0._remote_hosts[2].ip6_ll) /
469 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
470 ICMPv6NDOptSrcLLAddr(
471 lladdr=self.pg0.remote_mac))
473 self.send_and_expect_na(self.pg0, p,
474 "NS from link-local",
475 dst_ip=self.pg0._remote_hosts[2].ip6_ll,
476 tgt_ip=self.pg0.local_ip6)
479 # we should have learned an ND entry for the peer's link-local
480 # but not inserted a route to it in the FIB
482 self.assertTrue(find_nbr(self,
483 self.pg0.sw_if_index,
484 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,
514 self.assertFalse(find_route(self,
515 self.pg0._remote_hosts[3].ip6_ll,
519 def test_ns_duplicates(self):
523 # Generate some hosts on the LAN
525 self.pg1.generate_remote_hosts(3)
528 # Add host 1 on pg1 and pg2
530 ns_pg1 = VppNeighbor(self,
531 self.pg1.sw_if_index,
532 self.pg1.remote_hosts[1].mac,
533 self.pg1.remote_hosts[1].ip6,
535 ns_pg1.add_vpp_config()
536 ns_pg2 = VppNeighbor(self,
537 self.pg2.sw_if_index,
539 self.pg1.remote_hosts[1].ip6,
541 ns_pg2.add_vpp_config()
544 # IP packet destined for pg1 remote host arrives on pg1 again.
546 p = (Ether(dst=self.pg0.local_mac,
547 src=self.pg0.remote_mac) /
548 IPv6(src=self.pg0.remote_ip6,
549 dst=self.pg1.remote_hosts[1].ip6) /
550 inet6.UDP(sport=1234, dport=1234) /
553 self.pg0.add_stream(p)
554 self.pg_enable_capture(self.pg_interfaces)
557 rx1 = self.pg1.get_capture(1)
559 self.verify_ip(rx1[0],
561 self.pg1.remote_hosts[1].mac,
563 self.pg1.remote_hosts[1].ip6)
566 # remove the duplicate on pg1
567 # packet stream shoud generate NSs out of pg1
569 ns_pg1.remove_vpp_config()
571 self.send_and_expect_ns(self.pg0, self.pg1,
572 p, self.pg1.remote_hosts[1].ip6)
577 ns_pg1.add_vpp_config()
579 self.pg0.add_stream(p)
580 self.pg_enable_capture(self.pg_interfaces)
583 rx1 = self.pg1.get_capture(1)
585 self.verify_ip(rx1[0],
587 self.pg1.remote_hosts[1].mac,
589 self.pg1.remote_hosts[1].ip6)
591 def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
593 dst_ip = intf.remote_ip6
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),
609 in6_ptop(mk_ll_addr(intf.local_mac)))
611 # it should contain the links MTU
613 self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu)
615 # it should contain the source's link layer address option
616 sll = ra[ICMPv6NDOptSrcLLAddr]
617 self.assertEqual(sll.lladdr, intf.local_mac)
620 # the RA should not contain prefix information
621 self.assertFalse(ra.haslayer(
622 ICMPv6NDOptPrefixInfo))
624 raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1)
626 # the options are nested in the scapy packet in way that i cannot
627 # decipher how to decode. this 1st layer of option always returns
628 # nested classes, so a direct obj1=obj2 comparison always fails.
629 # however, the getlayer(.., 2) does give one instnace.
630 # so we cheat here and construct a new opt instnace for comparison
631 rd = ICMPv6NDOptPrefixInfo(
632 prefixlen=raos.prefixlen,
636 if type(pi_opt) is list:
637 for ii in range(len(pi_opt)):
638 self.assertEqual(pi_opt[ii], rd)
640 ICMPv6NDOptPrefixInfo, ii + 2)
642 self.assertEqual(pi_opt, raos)
644 def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
645 filter_out_fn=is_ipv6_misc,
647 intf.add_stream(pkts)
648 self.pg_enable_capture(self.pg_interfaces)
650 rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
652 self.assertEqual(len(rx), 1)
654 self.validate_ra(intf, rx, dst_ip, pi_opt=opt)
657 """ IPv6 Router Solicitation Exceptions
663 # Before we begin change the IPv6 RA responses to use the unicast
664 # address - that way we will not confuse them with the periodic
665 # RAs which go to the mcast address
666 # Sit and wait for the first periodic RA.
670 self.pg0.ip6_ra_config(send_unicast=1)
673 # An RS from a link source address
674 # - expect an RA in return
676 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
678 dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
681 self.send_and_expect_ra(self.pg0, pkts, "Genuine RS")
684 # For the next RS sent the RA should be rate limited
686 self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited")
689 # When we reconfiure the IPv6 RA config, we reset the RA rate limiting,
690 # so we need to do this before each test below so as not to drop
691 # packets for rate limiting reasons. Test this works here.
693 self.pg0.ip6_ra_config(send_unicast=1)
694 self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS")
697 # An RS sent from a non-link local source
699 self.pg0.ip6_ra_config(send_unicast=1)
700 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
701 IPv6(dst=self.pg0.local_ip6,
705 self.send_and_assert_no_replies(self.pg0, pkts,
706 "RS from non-link source")
709 # Source an RS from a link local address
711 self.pg0.ip6_ra_config(send_unicast=1)
712 ll = mk_ll_addr(self.pg0.remote_mac)
713 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
714 IPv6(dst=self.pg0.local_ip6, src=ll) /
717 self.send_and_expect_ra(self.pg0, pkts,
718 "RS sourced from link-local",
722 # Send the RS multicast
724 self.pg0.ip6_ra_config(send_unicast=1)
725 dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
726 ll = mk_ll_addr(self.pg0.remote_mac)
727 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
728 IPv6(dst="ff02::2", src=ll) /
731 self.send_and_expect_ra(self.pg0, pkts,
732 "RS sourced from link-local",
736 # Source from the unspecified address ::. This happens when the RS
737 # is sent before the host has a configured address/sub-net,
738 # i.e. auto-config. Since the sender has no IP address, the reply
739 # comes back mcast - so the capture needs to not filter this.
740 # If we happen to pick up the periodic RA at this point then so be it,
743 self.pg0.ip6_ra_config(send_unicast=1, suppress=1)
744 p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
745 IPv6(dst="ff02::2", src="::") /
748 self.send_and_expect_ra(self.pg0, pkts,
749 "RS sourced from unspecified",
754 # Configure The RA to announce the links prefix
756 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
757 self.pg0.local_ip6_prefix_len)
760 # RAs should now contain the prefix information option
762 opt = ICMPv6NDOptPrefixInfo(
763 prefixlen=self.pg0.local_ip6_prefix_len,
764 prefix=self.pg0.local_ip6,
768 self.pg0.ip6_ra_config(send_unicast=1)
769 ll = mk_ll_addr(self.pg0.remote_mac)
770 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
771 IPv6(dst=self.pg0.local_ip6, src=ll) /
773 self.send_and_expect_ra(self.pg0, p,
774 "RA with prefix-info",
779 # Change the prefix info to not off-link
782 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
783 self.pg0.local_ip6_prefix_len,
786 opt = ICMPv6NDOptPrefixInfo(
787 prefixlen=self.pg0.local_ip6_prefix_len,
788 prefix=self.pg0.local_ip6,
792 self.pg0.ip6_ra_config(send_unicast=1)
793 self.send_and_expect_ra(self.pg0, p,
794 "RA with Prefix info with L-flag=0",
799 # Change the prefix info to not off-link, no-autoconfig
800 # L and A flag are clear in the advert
802 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
803 self.pg0.local_ip6_prefix_len,
807 opt = ICMPv6NDOptPrefixInfo(
808 prefixlen=self.pg0.local_ip6_prefix_len,
809 prefix=self.pg0.local_ip6,
813 self.pg0.ip6_ra_config(send_unicast=1)
814 self.send_and_expect_ra(self.pg0, p,
815 "RA with Prefix info with A & L-flag=0",
820 # Change the flag settings back to the defaults
821 # L and A flag are set in the advert
823 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
824 self.pg0.local_ip6_prefix_len)
826 opt = ICMPv6NDOptPrefixInfo(
827 prefixlen=self.pg0.local_ip6_prefix_len,
828 prefix=self.pg0.local_ip6,
832 self.pg0.ip6_ra_config(send_unicast=1)
833 self.send_and_expect_ra(self.pg0, p,
834 "RA with Prefix info",
839 # Change the prefix info to not off-link, no-autoconfig
840 # L and A flag are clear in the advert
842 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
843 self.pg0.local_ip6_prefix_len,
847 opt = ICMPv6NDOptPrefixInfo(
848 prefixlen=self.pg0.local_ip6_prefix_len,
849 prefix=self.pg0.local_ip6,
853 self.pg0.ip6_ra_config(send_unicast=1)
854 self.send_and_expect_ra(self.pg0, p,
855 "RA with Prefix info with A & L-flag=0",
860 # Use the reset to defults option to revert to defaults
861 # L and A flag are clear in the advert
863 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
864 self.pg0.local_ip6_prefix_len,
867 opt = ICMPv6NDOptPrefixInfo(
868 prefixlen=self.pg0.local_ip6_prefix_len,
869 prefix=self.pg0.local_ip6,
873 self.pg0.ip6_ra_config(send_unicast=1)
874 self.send_and_expect_ra(self.pg0, p,
875 "RA with Prefix reverted to defaults",
880 # Advertise Another prefix. With no L-flag/A-flag
882 self.pg0.ip6_ra_prefix(self.pg1.local_ip6n,
883 self.pg1.local_ip6_prefix_len,
887 opt = [ICMPv6NDOptPrefixInfo(
888 prefixlen=self.pg0.local_ip6_prefix_len,
889 prefix=self.pg0.local_ip6,
892 ICMPv6NDOptPrefixInfo(
893 prefixlen=self.pg1.local_ip6_prefix_len,
894 prefix=self.pg1.local_ip6,
898 self.pg0.ip6_ra_config(send_unicast=1)
899 ll = mk_ll_addr(self.pg0.remote_mac)
900 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
901 IPv6(dst=self.pg0.local_ip6, src=ll) /
903 self.send_and_expect_ra(self.pg0, p,
904 "RA with multiple Prefix infos",
909 # Remove the first refix-info - expect the second is still in the
912 self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
913 self.pg0.local_ip6_prefix_len,
916 opt = ICMPv6NDOptPrefixInfo(
917 prefixlen=self.pg1.local_ip6_prefix_len,
918 prefix=self.pg1.local_ip6,
922 self.pg0.ip6_ra_config(send_unicast=1)
923 self.send_and_expect_ra(self.pg0, p,
924 "RA with Prefix reverted to defaults",
929 # Remove the second prefix-info - expect no prefix-info i nthe adverts
931 self.pg0.ip6_ra_prefix(self.pg1.local_ip6n,
932 self.pg1.local_ip6_prefix_len,
935 self.pg0.ip6_ra_config(send_unicast=1)
936 self.send_and_expect_ra(self.pg0, p,
937 "RA with Prefix reverted to defaults",
941 # Reset the periodic advertisements back to default values
943 self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
946 class TestICMPv6Echo(VppTestCase):
947 """ ICMPv6 Echo Test Case """
950 super(TestICMPv6Echo, self).setUp()
952 # create 1 pg interface
953 self.create_pg_interfaces(range(1))
955 for i in self.pg_interfaces:
961 super(TestICMPv6Echo, self).tearDown()
962 for i in self.pg_interfaces:
967 def test_icmpv6_echo(self):
968 """ VPP replies to ICMPv6 Echo Request
972 - Receive ICMPv6 Echo Request message on pg0 interface.
973 - Check outgoing ICMPv6 Echo Reply message on pg0 interface.
978 icmpv6_data = '\x0a' * 18
979 p_echo_request = (Ether(src=self.pg0.remote_mac,
980 dst=self.pg0.local_mac) /
981 IPv6(src=self.pg0.remote_ip6,
982 dst=self.pg0.local_ip6) /
988 self.pg0.add_stream(p_echo_request)
989 self.pg_enable_capture(self.pg_interfaces)
992 rx = self.pg0.get_capture(1)
996 icmpv6 = rx[ICMPv6EchoReply]
998 self.assertEqual(ether.src, self.pg0.local_mac)
999 self.assertEqual(ether.dst, self.pg0.remote_mac)
1001 self.assertEqual(ipv6.src, self.pg0.local_ip6)
1002 self.assertEqual(ipv6.dst, self.pg0.remote_ip6)
1005 icmp6types[icmpv6.type], "Echo Reply")
1006 self.assertEqual(icmpv6.id, icmpv6_id)
1007 self.assertEqual(icmpv6.seq, icmpv6_seq)
1008 self.assertEqual(icmpv6.data, icmpv6_data)
1011 class TestIPv6RD(TestIPv6ND):
1012 """ IPv6 Router Discovery Test Case """
1015 def setUpClass(cls):
1016 super(TestIPv6RD, cls).setUpClass()
1019 super(TestIPv6RD, self).setUp()
1021 # create 2 pg interfaces
1022 self.create_pg_interfaces(range(2))
1024 self.interfaces = list(self.pg_interfaces)
1026 # setup all interfaces
1027 for i in self.interfaces:
1032 for i in self.interfaces:
1035 super(TestIPv6RD, self).tearDown()
1037 def test_rd_send_router_solicitation(self):
1038 """ Verify router solicitation packets """
1041 self.pg_enable_capture(self.pg_interfaces)
1043 self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
1045 rx_list = self.pg1.get_capture(count, timeout=3)
1046 self.assertEqual(len(rx_list), count)
1047 for packet in rx_list:
1048 self.assertEqual(packet.haslayer(IPv6), 1)
1049 self.assertEqual(packet[IPv6].haslayer(
1051 dst = ip6_normalize(packet[IPv6].dst)
1052 dst2 = ip6_normalize("ff02::2")
1053 self.assert_equal(dst, dst2)
1054 src = ip6_normalize(packet[IPv6].src)
1055 src2 = ip6_normalize(self.pg1.local_ip6_ll)
1056 self.assert_equal(src, src2)
1058 bool(packet[ICMPv6ND_RS].haslayer(
1059 ICMPv6NDOptSrcLLAddr)))
1061 packet[ICMPv6NDOptSrcLLAddr].lladdr,
1064 def verify_prefix_info(self, reported_prefix, prefix_option):
1065 prefix = socket.inet_pton(socket.AF_INET6,
1066 prefix_option.getfieldval("prefix"))
1067 self.assert_equal(reported_prefix.dst_address, prefix)
1068 self.assert_equal(reported_prefix.dst_address_length,
1069 prefix_option.getfieldval("prefixlen"))
1070 L = prefix_option.getfieldval("L")
1071 A = prefix_option.getfieldval("A")
1072 option_flags = (L << 7) | (A << 6)
1073 self.assert_equal(reported_prefix.flags, option_flags)
1074 self.assert_equal(reported_prefix.valid_time,
1075 prefix_option.getfieldval("validlifetime"))
1076 self.assert_equal(reported_prefix.preferred_time,
1077 prefix_option.getfieldval("preferredlifetime"))
1079 def test_rd_receive_router_advertisement(self):
1080 """ Verify events triggered by received RA packets """
1082 self.vapi.want_ip6_ra_events()
1084 prefix_info_1 = ICMPv6NDOptPrefixInfo(
1088 preferredlifetime=500,
1093 prefix_info_2 = ICMPv6NDOptPrefixInfo(
1097 preferredlifetime=1000,
1102 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
1103 IPv6(dst=self.pg1.local_ip6_ll,
1104 src=mk_ll_addr(self.pg1.remote_mac)) /
1108 self.pg1.add_stream([p])
1111 ev = self.vapi.wait_for_event(10, "ip6_ra_event")
1113 self.assert_equal(ev.current_hop_limit, 0)
1114 self.assert_equal(ev.flags, 8)
1115 self.assert_equal(ev.router_lifetime_in_sec, 1800)
1116 self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
1118 ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
1120 self.assert_equal(ev.n_prefixes, 2)
1122 self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
1123 self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
1126 class TestIPv6RDControlPlane(TestIPv6ND):
1127 """ IPv6 Router Discovery Control Plane Test Case """
1130 def setUpClass(cls):
1131 super(TestIPv6RDControlPlane, cls).setUpClass()
1134 super(TestIPv6RDControlPlane, self).setUp()
1136 # create 1 pg interface
1137 self.create_pg_interfaces(range(1))
1139 self.interfaces = list(self.pg_interfaces)
1141 # setup all interfaces
1142 for i in self.interfaces:
1147 super(TestIPv6RDControlPlane, self).tearDown()
1150 def create_ra_packet(pg, routerlifetime=None):
1151 src_ip = pg.remote_ip6_ll
1152 dst_ip = pg.local_ip6
1153 if routerlifetime is not None:
1154 ra = ICMPv6ND_RA(routerlifetime=routerlifetime)
1157 p = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
1158 IPv6(dst=dst_ip, src=src_ip) / ra)
1162 def get_default_routes(fib):
1165 if entry.address_length == 0:
1166 for path in entry.path:
1167 if path.sw_if_index != 0xFFFFFFFF:
1169 defaut_route['sw_if_index'] = path.sw_if_index
1170 defaut_route['next_hop'] = path.next_hop
1171 list.append(defaut_route)
1175 def get_interface_addresses(fib, pg):
1178 if entry.address_length == 128:
1179 path = entry.path[0]
1180 if path.sw_if_index == pg.sw_if_index:
1181 list.append(entry.address)
1185 """ Test handling of SLAAC addresses and default routes """
1187 fib = self.vapi.ip6_fib_dump()
1188 default_routes = self.get_default_routes(fib)
1189 initial_addresses = set(self.get_interface_addresses(fib, self.pg0))
1190 self.assertEqual(default_routes, [])
1191 router_address = self.pg0.remote_ip6n_ll
1193 self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1)
1198 packet = (self.create_ra_packet(
1199 self.pg0) / ICMPv6NDOptPrefixInfo(
1203 preferredlifetime=2,
1206 ) / ICMPv6NDOptPrefixInfo(
1210 preferredlifetime=1000,
1214 self.pg0.add_stream([packet])
1219 fib = self.vapi.ip6_fib_dump()
1221 # check FIB for new address
1222 addresses = set(self.get_interface_addresses(fib, self.pg0))
1223 new_addresses = addresses.difference(initial_addresses)
1224 self.assertEqual(len(new_addresses), 1)
1225 prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1226 self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1228 # check FIB for new default route
1229 default_routes = self.get_default_routes(fib)
1230 self.assertEqual(len(default_routes), 1)
1231 dr = default_routes[0]
1232 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1233 self.assertEqual(dr['next_hop'], router_address)
1235 # send RA to delete default route
1236 packet = self.create_ra_packet(self.pg0, routerlifetime=0)
1237 self.pg0.add_stream([packet])
1242 # check that default route is deleted
1243 fib = self.vapi.ip6_fib_dump()
1244 default_routes = self.get_default_routes(fib)
1245 self.assertEqual(len(default_routes), 0)
1250 packet = self.create_ra_packet(self.pg0)
1251 self.pg0.add_stream([packet])
1256 # check FIB for new default route
1257 fib = self.vapi.ip6_fib_dump()
1258 default_routes = self.get_default_routes(fib)
1259 self.assertEqual(len(default_routes), 1)
1260 dr = default_routes[0]
1261 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1262 self.assertEqual(dr['next_hop'], router_address)
1264 # send RA, updating router lifetime to 1s
1265 packet = self.create_ra_packet(self.pg0, 1)
1266 self.pg0.add_stream([packet])
1271 # check that default route still exists
1272 fib = self.vapi.ip6_fib_dump()
1273 default_routes = self.get_default_routes(fib)
1274 self.assertEqual(len(default_routes), 1)
1275 dr = default_routes[0]
1276 self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index)
1277 self.assertEqual(dr['next_hop'], router_address)
1281 # check that default route is deleted
1282 fib = self.vapi.ip6_fib_dump()
1283 default_routes = self.get_default_routes(fib)
1284 self.assertEqual(len(default_routes), 0)
1286 # check FIB still contains the SLAAC address
1287 addresses = set(self.get_interface_addresses(fib, self.pg0))
1288 new_addresses = addresses.difference(initial_addresses)
1289 self.assertEqual(len(new_addresses), 1)
1290 prefix = list(new_addresses)[0][:8] + '\0\0\0\0\0\0\0\0'
1291 self.assertEqual(inet_ntop(AF_INET6, prefix), '1::')
1295 # check that SLAAC address is deleted
1296 fib = self.vapi.ip6_fib_dump()
1297 addresses = set(self.get_interface_addresses(fib, self.pg0))
1298 new_addresses = addresses.difference(initial_addresses)
1299 self.assertEqual(len(new_addresses), 0)
1302 class IPv6NDProxyTest(TestIPv6ND):
1303 """ IPv6 ND ProxyTest Case """
1306 super(IPv6NDProxyTest, self).setUp()
1308 # create 3 pg interfaces
1309 self.create_pg_interfaces(range(3))
1311 # pg0 is the master interface, with the configured subnet
1313 self.pg0.config_ip6()
1314 self.pg0.resolve_ndp()
1316 self.pg1.ip6_enable()
1317 self.pg2.ip6_enable()
1320 super(IPv6NDProxyTest, self).tearDown()
1322 def test_nd_proxy(self):
1323 """ IPv6 Proxy ND """
1326 # Generate some hosts in the subnet that we are proxying
1328 self.pg0.generate_remote_hosts(8)
1330 nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
1331 d = inet_ntop(AF_INET6, nsma)
1334 # Send an NS for one of those remote hosts on one of the proxy links
1335 # expect no response since it's from an address that is not
1336 # on the link that has the prefix configured
1338 ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
1340 src=self.pg0._remote_hosts[2].ip6) /
1341 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1342 ICMPv6NDOptSrcLLAddr(
1343 lladdr=self.pg0._remote_hosts[2].mac))
1345 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
1348 # Add proxy support for the host
1350 self.vapi.ip6_nd_proxy(
1351 inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1352 self.pg1.sw_if_index)
1355 # try that NS again. this time we expect an NA back
1357 self.send_and_expect_na(self.pg1, ns_pg1,
1358 "NS to proxy entry",
1359 dst_ip=self.pg0._remote_hosts[2].ip6,
1360 tgt_ip=self.pg0.local_ip6)
1363 # ... and that we have an entry in the ND cache
1365 self.assertTrue(find_nbr(self,
1366 self.pg1.sw_if_index,
1367 self.pg0._remote_hosts[2].ip6,
1371 # ... and we can route traffic to it
1373 t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
1374 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1375 src=self.pg0.remote_ip6) /
1376 inet6.UDP(sport=10000, dport=20000) /
1379 self.pg0.add_stream(t)
1380 self.pg_enable_capture(self.pg_interfaces)
1382 rx = self.pg1.get_capture(1)
1385 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1386 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1388 self.assertEqual(rx[IPv6].src,
1390 self.assertEqual(rx[IPv6].dst,
1394 # Test we proxy for the host on the main interface
1396 ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
1397 IPv6(dst=d, src=self.pg0.remote_ip6) /
1399 tgt=self.pg0._remote_hosts[2].ip6) /
1400 ICMPv6NDOptSrcLLAddr(
1401 lladdr=self.pg0.remote_mac))
1403 self.send_and_expect_na(self.pg0, ns_pg0,
1404 "NS to proxy entry on main",
1405 tgt_ip=self.pg0._remote_hosts[2].ip6,
1406 dst_ip=self.pg0.remote_ip6)
1409 # Setup and resolve proxy for another host on another interface
1411 ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
1413 src=self.pg0._remote_hosts[3].ip6) /
1414 ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
1415 ICMPv6NDOptSrcLLAddr(
1416 lladdr=self.pg0._remote_hosts[2].mac))
1418 self.vapi.ip6_nd_proxy(
1419 inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1420 self.pg2.sw_if_index)
1422 self.send_and_expect_na(self.pg2, ns_pg2,
1423 "NS to proxy entry other interface",
1424 dst_ip=self.pg0._remote_hosts[3].ip6,
1425 tgt_ip=self.pg0.local_ip6)
1427 self.assertTrue(find_nbr(self,
1428 self.pg2.sw_if_index,
1429 self.pg0._remote_hosts[3].ip6,
1433 # hosts can communicate. pg2->pg1
1435 t2 = (Ether(dst=self.pg2.local_mac,
1436 src=self.pg0.remote_hosts[3].mac) /
1437 IPv6(dst=self.pg0._remote_hosts[2].ip6,
1438 src=self.pg0._remote_hosts[3].ip6) /
1439 inet6.UDP(sport=10000, dport=20000) /
1442 self.pg2.add_stream(t2)
1443 self.pg_enable_capture(self.pg_interfaces)
1445 rx = self.pg1.get_capture(1)
1448 self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
1449 self.assertEqual(rx[Ether].src, self.pg1.local_mac)
1451 self.assertEqual(rx[IPv6].src,
1453 self.assertEqual(rx[IPv6].dst,
1457 # remove the proxy configs
1459 self.vapi.ip6_nd_proxy(
1460 inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
1461 self.pg1.sw_if_index,
1463 self.vapi.ip6_nd_proxy(
1464 inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
1465 self.pg2.sw_if_index,
1468 self.assertFalse(find_nbr(self,
1469 self.pg2.sw_if_index,
1470 self.pg0._remote_hosts[3].ip6,
1472 self.assertFalse(find_nbr(self,
1473 self.pg1.sw_if_index,
1474 self.pg0._remote_hosts[2].ip6,
1478 # no longer proxy-ing...
1480 self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
1481 self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
1482 self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
1485 # no longer forwarding. traffic generates NS out of the glean/main
1488 self.pg2.add_stream(t2)
1489 self.pg_enable_capture(self.pg_interfaces)
1492 rx = self.pg0.get_capture(1)
1494 self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
1497 class TestIPNull(VppTestCase):
1498 """ IPv6 routes via NULL """
1501 super(TestIPNull, self).setUp()
1503 # create 2 pg interfaces
1504 self.create_pg_interfaces(range(1))
1506 for i in self.pg_interfaces:
1512 super(TestIPNull, self).tearDown()
1513 for i in self.pg_interfaces:
1517 def test_ip_null(self):
1518 """ IP NULL route """
1520 p = (Ether(src=self.pg0.remote_mac,
1521 dst=self.pg0.local_mac) /
1522 IPv6(src=self.pg0.remote_ip6, dst="2001::1") /
1523 inet6.UDP(sport=1234, dport=1234) /
1527 # A route via IP NULL that will reply with ICMP unreachables
1529 ip_unreach = VppIpRoute(self, "2001::", 64, [], is_unreach=1, is_ip6=1)
1530 ip_unreach.add_vpp_config()
1532 self.pg0.add_stream(p)
1533 self.pg_enable_capture(self.pg_interfaces)
1536 rx = self.pg0.get_capture(1)
1538 icmp = rx[ICMPv6DestUnreach]
1540 # 0 = "No route to destination"
1541 self.assertEqual(icmp.code, 0)
1543 # ICMP is rate limited. pause a bit
1547 # A route via IP NULL that will reply with ICMP prohibited
1549 ip_prohibit = VppIpRoute(self, "2001::1", 128, [],
1550 is_prohibit=1, is_ip6=1)
1551 ip_prohibit.add_vpp_config()
1553 self.pg0.add_stream(p)
1554 self.pg_enable_capture(self.pg_interfaces)
1557 rx = self.pg0.get_capture(1)
1559 icmp = rx[ICMPv6DestUnreach]
1561 # 1 = "Communication with destination administratively prohibited"
1562 self.assertEqual(icmp.code, 1)
1565 class TestIPDisabled(VppTestCase):
1566 """ IPv6 disabled """
1569 super(TestIPDisabled, self).setUp()
1571 # create 2 pg interfaces
1572 self.create_pg_interfaces(range(2))
1576 self.pg0.config_ip6()
1577 self.pg0.resolve_ndp()
1579 # PG 1 is not IP enabled
1583 super(TestIPDisabled, self).tearDown()
1584 for i in self.pg_interfaces:
1588 def test_ip_disabled(self):
1593 # one accepting interface, pg0, 2 forwarding interfaces
1595 route_ff_01 = VppIpMRoute(
1599 MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
1600 [VppMRoutePath(self.pg1.sw_if_index,
1601 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
1602 VppMRoutePath(self.pg0.sw_if_index,
1603 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)],
1605 route_ff_01.add_vpp_config()
1607 pu = (Ether(src=self.pg1.remote_mac,
1608 dst=self.pg1.local_mac) /
1609 IPv6(src="2001::1", dst=self.pg0.remote_ip6) /
1610 inet6.UDP(sport=1234, dport=1234) /
1612 pm = (Ether(src=self.pg1.remote_mac,
1613 dst=self.pg1.local_mac) /
1614 IPv6(src="2001::1", dst="ffef::1") /
1615 inet6.UDP(sport=1234, dport=1234) /
1619 # PG1 does not forward IP traffic
1621 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1622 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1627 self.pg1.config_ip6()
1630 # Now we get packets through
1632 self.pg1.add_stream(pu)
1633 self.pg_enable_capture(self.pg_interfaces)
1635 rx = self.pg0.get_capture(1)
1637 self.pg1.add_stream(pm)
1638 self.pg_enable_capture(self.pg_interfaces)
1640 rx = self.pg0.get_capture(1)
1645 self.pg1.unconfig_ip6()
1648 # PG1 does not forward IP traffic
1650 self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled")
1651 self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled")
1654 class TestIP6LoadBalance(VppTestCase):
1655 """ IPv6 Load-Balancing """
1658 super(TestIP6LoadBalance, self).setUp()
1660 self.create_pg_interfaces(range(5))
1662 mpls_tbl = VppMplsTable(self, 0)
1663 mpls_tbl.add_vpp_config()
1665 for i in self.pg_interfaces:
1672 for i in self.pg_interfaces:
1676 super(TestIP6LoadBalance, self).tearDown()
1678 def send_and_expect_load_balancing(self, input, pkts, outputs):
1679 self.vapi.cli("clear trace")
1680 input.add_stream(pkts)
1681 self.pg_enable_capture(self.pg_interfaces)
1684 rx = oo._get_capture(1)
1685 self.assertNotEqual(0, len(rx))
1687 def send_and_expect_one_itf(self, input, pkts, itf):
1688 self.vapi.cli("clear trace")
1689 input.add_stream(pkts)
1690 self.pg_enable_capture(self.pg_interfaces)
1692 rx = itf.get_capture(len(pkts))
1694 def test_ip6_load_balance(self):
1695 """ IPv6 Load-Balancing """
1698 # An array of packets that differ only in the destination port
1702 # - MPLS non-EOS with an entropy label
1706 port_mpls_neos_pkts = []
1710 # An array of packets that differ only in the source address
1715 for ii in range(65):
1717 IPv6(dst="3000::1", src="3000:1::1") /
1718 inet6.UDP(sport=1234, dport=1234 + ii) /
1720 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1721 dst=self.pg0.local_mac) /
1723 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1724 dst=self.pg0.local_mac) /
1725 MPLS(label=66, ttl=2) /
1727 port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac,
1728 dst=self.pg0.local_mac) /
1729 MPLS(label=67, ttl=2) /
1730 MPLS(label=77, ttl=2) /
1732 port_ent_pkts.append((Ether(src=self.pg0.remote_mac,
1733 dst=self.pg0.local_mac) /
1734 MPLS(label=67, ttl=2) /
1735 MPLS(label=14, ttl=2) /
1736 MPLS(label=999, ttl=2) /
1739 IPv6(dst="3000::1", src="3000:1::%d" % ii) /
1740 inet6.UDP(sport=1234, dport=1234) /
1742 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
1743 dst=self.pg0.local_mac) /
1745 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
1746 dst=self.pg0.local_mac) /
1747 MPLS(label=66, ttl=2) /
1751 # A route for the IP pacekts
1753 route_3000_1 = VppIpRoute(self, "3000::1", 128,
1754 [VppRoutePath(self.pg1.remote_ip6,
1755 self.pg1.sw_if_index,
1756 proto=DpoProto.DPO_PROTO_IP6),
1757 VppRoutePath(self.pg2.remote_ip6,
1758 self.pg2.sw_if_index,
1759 proto=DpoProto.DPO_PROTO_IP6)],
1761 route_3000_1.add_vpp_config()
1764 # a local-label for the EOS packets
1766 binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1)
1767 binding.add_vpp_config()
1770 # An MPLS route for the non-EOS packets
1772 route_67 = VppMplsRoute(self, 67, 0,
1773 [VppRoutePath(self.pg1.remote_ip6,
1774 self.pg1.sw_if_index,
1776 proto=DpoProto.DPO_PROTO_IP6),
1777 VppRoutePath(self.pg2.remote_ip6,
1778 self.pg2.sw_if_index,
1780 proto=DpoProto.DPO_PROTO_IP6)])
1781 route_67.add_vpp_config()
1784 # inject the packet on pg0 - expect load-balancing across the 2 paths
1785 # - since the default hash config is to use IP src,dst and port
1787 # We are not going to ensure equal amounts of packets across each link,
1788 # since the hash algorithm is statistical and therefore this can never
1789 # be guaranteed. But wuth 64 different packets we do expect some
1790 # balancing. So instead just ensure there is traffic on each link.
1792 self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
1793 [self.pg1, self.pg2])
1794 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1795 [self.pg1, self.pg2])
1796 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
1797 [self.pg1, self.pg2])
1798 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1799 [self.pg1, self.pg2])
1800 self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts,
1801 [self.pg1, self.pg2])
1804 # The packets with Entropy label in should not load-balance,
1805 # since the Entorpy value is fixed.
1807 self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1)
1810 # change the flow hash config so it's only IP src,dst
1811 # - now only the stream with differing source address will
1814 self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=0, dport=0)
1816 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
1817 [self.pg1, self.pg2])
1818 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
1819 [self.pg1, self.pg2])
1820 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
1823 # change the flow hash config back to defaults
1825 self.vapi.set_ip_flow_hash(0, is_ip6=1, src=1, dst=1, sport=1, dport=1)
1828 # Recursive prefixes
1829 # - testing that 2 stages of load-balancing occurs and there is no
1830 # polarisation (i.e. only 2 of 4 paths are used)
1835 for ii in range(257):
1836 port_pkts.append((Ether(src=self.pg0.remote_mac,
1837 dst=self.pg0.local_mac) /
1840 inet6.UDP(sport=1234,
1843 src_pkts.append((Ether(src=self.pg0.remote_mac,
1844 dst=self.pg0.local_mac) /
1846 src="4000:1::%d" % ii) /
1847 inet6.UDP(sport=1234, dport=1234) /
1850 route_3000_2 = VppIpRoute(self, "3000::2", 128,
1851 [VppRoutePath(self.pg3.remote_ip6,
1852 self.pg3.sw_if_index,
1853 proto=DpoProto.DPO_PROTO_IP6),
1854 VppRoutePath(self.pg4.remote_ip6,
1855 self.pg4.sw_if_index,
1856 proto=DpoProto.DPO_PROTO_IP6)],
1858 route_3000_2.add_vpp_config()
1860 route_4000_1 = VppIpRoute(self, "4000::1", 128,
1861 [VppRoutePath("3000::1",
1863 proto=DpoProto.DPO_PROTO_IP6),
1864 VppRoutePath("3000::2",
1866 proto=DpoProto.DPO_PROTO_IP6)],
1868 route_4000_1.add_vpp_config()
1871 # inject the packet on pg0 - expect load-balancing across all 4 paths
1873 self.vapi.cli("clear trace")
1874 self.send_and_expect_load_balancing(self.pg0, port_pkts,
1875 [self.pg1, self.pg2,
1876 self.pg3, self.pg4])
1877 self.send_and_expect_load_balancing(self.pg0, src_pkts,
1878 [self.pg1, self.pg2,
1879 self.pg3, self.pg4])
1882 # Recursive prefixes
1883 # - testing that 2 stages of load-balancing no choices
1887 for ii in range(257):
1888 port_pkts.append((Ether(src=self.pg0.remote_mac,
1889 dst=self.pg0.local_mac) /
1892 inet6.UDP(sport=1234,
1896 route_5000_2 = VppIpRoute(self, "5000::2", 128,
1897 [VppRoutePath(self.pg3.remote_ip6,
1898 self.pg3.sw_if_index,
1899 proto=DpoProto.DPO_PROTO_IP6)],
1901 route_5000_2.add_vpp_config()
1903 route_6000_1 = VppIpRoute(self, "6000::1", 128,
1904 [VppRoutePath("5000::2",
1906 proto=DpoProto.DPO_PROTO_IP6)],
1908 route_6000_1.add_vpp_config()
1911 # inject the packet on pg0 - expect load-balancing across all 4 paths
1913 self.vapi.cli("clear trace")
1914 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
1917 class TestIP6Punt(VppTestCase):
1918 """ IPv6 Punt Police/Redirect """
1921 super(TestIP6Punt, self).setUp()
1923 self.create_pg_interfaces(range(4))
1925 for i in self.pg_interfaces:
1931 super(TestIP6Punt, self).tearDown()
1932 for i in self.pg_interfaces:
1936 def test_ip_punt(self):
1937 """ IP6 punt police and redirect """
1939 p = (Ether(src=self.pg0.remote_mac,
1940 dst=self.pg0.local_mac) /
1941 IPv6(src=self.pg0.remote_ip6,
1942 dst=self.pg0.local_ip6) /
1943 inet6.TCP(sport=1234, dport=1234) /
1949 # Configure a punt redirect via pg1.
1951 nh_addr = VppIpAddress(self.pg1.remote_ip6).encode()
1952 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1953 self.pg1.sw_if_index,
1956 self.send_and_expect(self.pg0, pkts, self.pg1)
1961 policer = self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1963 self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
1965 self.vapi.cli("clear trace")
1966 self.pg0.add_stream(pkts)
1967 self.pg_enable_capture(self.pg_interfaces)
1971 # the number of packet recieved should be greater than 0,
1972 # but not equal to the number sent, since some were policed
1974 rx = self.pg1._get_capture(1)
1975 self.assertGreater(len(rx), 0)
1976 self.assertLess(len(rx), len(pkts))
1979 # remove the poilcer. back to full rx
1981 self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
1982 self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
1983 rate_type=1, is_add=0)
1984 self.send_and_expect(self.pg0, pkts, self.pg1)
1987 # remove the redirect. expect full drop.
1989 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1990 self.pg1.sw_if_index,
1993 self.send_and_assert_no_replies(self.pg0, pkts,
1994 "IP no punt config")
1997 # Add a redirect that is not input port selective
1999 self.vapi.ip_punt_redirect(0xffffffff,
2000 self.pg1.sw_if_index,
2002 self.send_and_expect(self.pg0, pkts, self.pg1)
2004 self.vapi.ip_punt_redirect(0xffffffff,
2005 self.pg1.sw_if_index,
2009 def test_ip_punt_dump(self):
2010 """ IP6 punt redirect dump"""
2013 # Configure a punt redirects
2015 nh_addr = VppIpAddress(self.pg3.remote_ip6).encode()
2016 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
2017 self.pg3.sw_if_index,
2019 self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
2020 self.pg3.sw_if_index,
2022 self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
2023 self.pg3.sw_if_index,
2024 VppIpAddress('0::0').encode())
2027 # Dump pg0 punt redirects
2029 punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index,
2032 self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
2035 # Dump punt redirects for all interfaces
2037 punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1)
2038 self.assertEqual(len(punts), 3)
2040 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
2041 self.assertNotEqual(punts[1].punt.nh.un.ip6, self.pg3.remote_ip6)
2042 self.assertEqual(punts[2].punt.nh.un.ip6.address, '\x00'*16)
2045 class TestIPDeag(VppTestCase):
2046 """ IPv6 Deaggregate Routes """
2049 super(TestIPDeag, self).setUp()
2051 self.create_pg_interfaces(range(3))
2053 for i in self.pg_interfaces:
2059 super(TestIPDeag, self).tearDown()
2060 for i in self.pg_interfaces:
2064 def test_ip_deag(self):
2065 """ IP Deag Routes """
2068 # Create a table to be used for:
2069 # 1 - another destination address lookup
2070 # 2 - a source address lookup
2072 table_dst = VppIpTable(self, 1, is_ip6=1)
2073 table_src = VppIpTable(self, 2, is_ip6=1)
2074 table_dst.add_vpp_config()
2075 table_src.add_vpp_config()
2078 # Add a route in the default table to point to a deag/
2079 # second lookup in each of these tables
2081 route_to_dst = VppIpRoute(self, "1::1", 128,
2085 proto=DpoProto.DPO_PROTO_IP6)],
2087 route_to_src = VppIpRoute(self, "1::2", 128,
2092 proto=DpoProto.DPO_PROTO_IP6)],
2094 route_to_dst.add_vpp_config()
2095 route_to_src.add_vpp_config()
2098 # packets to these destination are dropped, since they'll
2099 # hit the respective default routes in the second table
2101 p_dst = (Ether(src=self.pg0.remote_mac,
2102 dst=self.pg0.local_mac) /
2103 IPv6(src="5::5", dst="1::1") /
2104 inet6.TCP(sport=1234, dport=1234) /
2106 p_src = (Ether(src=self.pg0.remote_mac,
2107 dst=self.pg0.local_mac) /
2108 IPv6(src="2::2", dst="1::2") /
2109 inet6.TCP(sport=1234, dport=1234) /
2111 pkts_dst = p_dst * 257
2112 pkts_src = p_src * 257
2114 self.send_and_assert_no_replies(self.pg0, pkts_dst,
2116 self.send_and_assert_no_replies(self.pg0, pkts_src,
2120 # add a route in the dst table to forward via pg1
2122 route_in_dst = VppIpRoute(self, "1::1", 128,
2123 [VppRoutePath(self.pg1.remote_ip6,
2124 self.pg1.sw_if_index,
2125 proto=DpoProto.DPO_PROTO_IP6)],
2128 route_in_dst.add_vpp_config()
2130 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
2133 # add a route in the src table to forward via pg2
2135 route_in_src = VppIpRoute(self, "2::2", 128,
2136 [VppRoutePath(self.pg2.remote_ip6,
2137 self.pg2.sw_if_index,
2138 proto=DpoProto.DPO_PROTO_IP6)],
2141 route_in_src.add_vpp_config()
2142 self.send_and_expect(self.pg0, pkts_src, self.pg2)
2145 # loop in the lookup DP
2147 route_loop = VppIpRoute(self, "3::3", 128,
2150 proto=DpoProto.DPO_PROTO_IP6)],
2152 route_loop.add_vpp_config()
2154 p_l = (Ether(src=self.pg0.remote_mac,
2155 dst=self.pg0.local_mac) /
2156 IPv6(src="3::4", dst="3::3") /
2157 inet6.TCP(sport=1234, dport=1234) /
2160 self.send_and_assert_no_replies(self.pg0, p_l * 257,
2164 class TestIP6Input(VppTestCase):
2165 """ IPv6 Input Exceptions """
2168 super(TestIP6Input, self).setUp()
2170 self.create_pg_interfaces(range(2))
2172 for i in self.pg_interfaces:
2178 super(TestIP6Input, self).tearDown()
2179 for i in self.pg_interfaces:
2183 def test_ip_input(self):
2184 """ IP6 Input Exceptions """
2187 # bad version - this is dropped
2189 p_version = (Ether(src=self.pg0.remote_mac,
2190 dst=self.pg0.local_mac) /
2191 IPv6(src=self.pg0.remote_ip6,
2192 dst=self.pg1.remote_ip6,
2194 inet6.UDP(sport=1234, dport=1234) /
2197 self.send_and_assert_no_replies(self.pg0, p_version * 65,
2201 # hop limit - IMCP replies
2203 p_version = (Ether(src=self.pg0.remote_mac,
2204 dst=self.pg0.local_mac) /
2205 IPv6(src=self.pg0.remote_ip6,
2206 dst=self.pg1.remote_ip6,
2208 inet6.UDP(sport=1234, dport=1234) /
2211 rx = self.send_and_expect(self.pg0, p_version * 65, self.pg0)
2213 icmp = rx[ICMPv6TimeExceeded]
2214 self.assertEqual(icmp.type, 3)
2215 # 0: "hop limit exceeded in transit",
2216 self.assertEqual(icmp.code, 0)
2219 if __name__ == '__main__':
2220 unittest.main(testRunner=VppTestRunner)