7 from scapy.contrib.mpls import MPLS
8 from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes
9 from scapy.layers.l2 import Ether, Dot1Q, ARP
10 from scapy.packet import Raw
13 from framework import VppTestCase, VppTestRunner
15 from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \
16 VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
17 VppMplsTable, VppIpTable
18 from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint
21 class TestIPv4(VppTestCase):
22 """ IPv4 Test Case """
26 Perform test setup before test case.
29 - create 3 pg interfaces
30 - untagged pg0 interface
31 - Dot1Q subinterface on pg1
32 - Dot1AD subinterface on pg2
34 - put it into UP state
36 - resolve neighbor address using ARP
37 - configure 200 fib entries
39 :ivar list interfaces: pg interfaces and subinterfaces.
40 :ivar dict flows: IPv4 packet flows in test.
42 super(TestIPv4, self).setUp()
44 # create 3 pg interfaces
45 self.create_pg_interfaces(range(3))
47 # create 2 subinterfaces for pg1 and pg2
48 self.sub_interfaces = [
49 VppDot1QSubint(self, self.pg1, 100),
50 VppDot1ADSubint(self, self.pg2, 200, 300, 400)]
52 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
54 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
55 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
56 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
59 self.pg_if_packet_sizes = [64, 1500, 9020]
61 self.interfaces = list(self.pg_interfaces)
62 self.interfaces.extend(self.sub_interfaces)
64 # setup all interfaces
65 for i in self.interfaces:
70 # config 2M FIB entries
71 self.config_fib_entries(200)
74 """Run standard test teardown and log ``show ip arp``."""
75 super(TestIPv4, self).tearDown()
77 self.logger.info(self.vapi.cli("show ip arp"))
78 # info(self.vapi.cli("show ip fib")) # many entries
80 def config_fib_entries(self, count):
81 """For each interface add to the FIB table *count* routes to
82 "10.0.0.1/32" destination with interface's local address as next-hop
85 :param int count: Number of FIB entries.
87 - *TODO:* check if the next-hop address shouldn't be remote address
88 instead of local address.
90 n_int = len(self.interfaces)
93 dest_addr = socket.inet_pton(socket.AF_INET, "10.0.0.1")
95 for i in self.interfaces:
96 next_hop_address = i.local_ip4n
97 for j in range(count / n_int):
98 self.vapi.ip_add_del_route(
99 dest_addr, dest_addr_len, next_hop_address)
101 if counter / count * 100 > percent:
102 self.logger.info("Configure %d FIB entries .. %d%% done" %
106 def modify_packet(self, src_if, packet_size, pkt):
107 """Add load, set destination IP and extend packet to required packet
108 size for defined interface.
110 :param VppInterface src_if: Interface to create packet for.
111 :param int packet_size: Required packet size.
112 :param Scapy pkt: Packet to be modified.
114 dst_if_idx = packet_size / 10 % 2
115 dst_if = self.flows[src_if][dst_if_idx]
116 info = self.create_packet_info(src_if, dst_if)
117 payload = self.info_to_payload(info)
119 p[IP].dst = dst_if.remote_ip4
121 if isinstance(src_if, VppSubInterface):
122 p = src_if.add_dot1_layer(p)
123 self.extend_packet(p, packet_size)
127 def create_stream(self, src_if):
128 """Create input packet stream for defined interface.
130 :param VppInterface src_if: Interface to create packet stream for.
132 hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0
133 pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
134 IP(src=src_if.remote_ip4) /
135 UDP(sport=1234, dport=1234))
137 pkts = [self.modify_packet(src_if, i, pkt_tmpl)
138 for i in moves.range(self.pg_if_packet_sizes[0],
139 self.pg_if_packet_sizes[1], 10)]
140 pkts_b = [self.modify_packet(src_if, i, pkt_tmpl)
141 for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext,
142 self.pg_if_packet_sizes[2] + hdr_ext,
148 def verify_capture(self, dst_if, capture):
149 """Verify captured input packet stream for defined interface.
151 :param VppInterface dst_if: Interface to verify captured packet stream
153 :param list capture: Captured packet stream.
155 self.logger.info("Verifying capture on interface %s" % dst_if.name)
157 for i in self.interfaces:
158 last_info[i.sw_if_index] = None
160 dst_sw_if_index = dst_if.sw_if_index
161 if hasattr(dst_if, 'parent'):
163 for packet in capture:
165 # Check VLAN tags and Ethernet header
166 packet = dst_if.remove_dot1_layer(packet)
167 self.assertTrue(Dot1Q not in packet)
171 payload_info = self.payload_to_info(str(packet[Raw]))
172 packet_index = payload_info.index
173 self.assertEqual(payload_info.dst, dst_sw_if_index)
175 "Got packet on port %s: src=%u (id=%u)" %
176 (dst_if.name, payload_info.src, packet_index))
177 next_info = self.get_next_packet_info_for_interface2(
178 payload_info.src, dst_sw_if_index,
179 last_info[payload_info.src])
180 last_info[payload_info.src] = next_info
181 self.assertTrue(next_info is not None)
182 self.assertEqual(packet_index, next_info.index)
183 saved_packet = next_info.data
184 # Check standard fields
185 self.assertEqual(ip.src, saved_packet[IP].src)
186 self.assertEqual(ip.dst, saved_packet[IP].dst)
187 self.assertEqual(udp.sport, saved_packet[UDP].sport)
188 self.assertEqual(udp.dport, saved_packet[UDP].dport)
190 self.logger.error(ppp("Unexpected or invalid packet:", packet))
192 for i in self.interfaces:
193 remaining_packet = self.get_next_packet_info_for_interface2(
194 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
195 self.assertTrue(remaining_packet is None,
196 "Interface %s: Packet expected from interface %s "
197 "didn't arrive" % (dst_if.name, i.name))
204 - Create IPv4 stream for pg0 interface
205 - Create IPv4 tagged streams for pg1's and pg2's sub-interface.
206 - Send and verify received packets on each interface.
209 pkts = self.create_stream(self.pg0)
210 self.pg0.add_stream(pkts)
212 for i in self.sub_interfaces:
213 pkts = self.create_stream(i)
214 i.parent.add_stream(pkts)
216 self.pg_enable_capture(self.pg_interfaces)
219 pkts = self.pg0.get_capture()
220 self.verify_capture(self.pg0, pkts)
222 for i in self.sub_interfaces:
223 pkts = i.parent.get_capture()
224 self.verify_capture(i, pkts)
227 class TestICMPEcho(VppTestCase):
228 """ ICMP Echo Test Case """
231 super(TestICMPEcho, self).setUp()
233 # create 1 pg interface
234 self.create_pg_interfaces(range(1))
236 for i in self.pg_interfaces:
242 super(TestICMPEcho, self).tearDown()
243 for i in self.pg_interfaces:
247 def test_icmp_echo(self):
248 """ VPP replies to ICMP Echo Request
252 - Receive ICMP Echo Request message on pg0 interface.
253 - Check outgoing ICMP Echo Reply message on pg0 interface.
258 icmp_load = '\x0a' * 18
259 p_echo_request = (Ether(src=self.pg0.remote_mac,
260 dst=self.pg0.local_mac) /
261 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
262 ICMP(id=icmp_id, seq=icmp_seq) /
265 self.pg0.add_stream(p_echo_request)
266 self.pg_enable_capture(self.pg_interfaces)
269 rx = self.pg0.get_capture(1)
275 self.assertEqual(ether.src, self.pg0.local_mac)
276 self.assertEqual(ether.dst, self.pg0.remote_mac)
278 self.assertEqual(ipv4.src, self.pg0.local_ip4)
279 self.assertEqual(ipv4.dst, self.pg0.remote_ip4)
281 self.assertEqual(icmptypes[icmp.type], "echo-reply")
282 self.assertEqual(icmp.id, icmp_id)
283 self.assertEqual(icmp.seq, icmp_seq)
284 self.assertEqual(icmp[Raw].load, icmp_load)
287 class TestIPv4FibCrud(VppTestCase):
288 """ FIB - add/update/delete - ip4 routes
296 ..note:: Python API is too slow to add many routes, needs replacement.
299 def config_fib_many_to_one(self, start_dest_addr, next_hop_addr, count):
302 :param start_dest_addr:
303 :param next_hop_addr:
305 :return list: added ips with 32 prefix
308 dest_addr = int(binascii.hexlify(socket.inet_pton(socket.AF_INET,
309 start_dest_addr)), 16)
311 n_next_hop_addr = socket.inet_pton(socket.AF_INET, next_hop_addr)
312 for _ in range(count):
313 n_dest_addr = '{:08x}'.format(dest_addr).decode('hex')
314 self.vapi.ip_add_del_route(n_dest_addr, dest_addr_len,
316 added_ips.append(socket.inet_ntoa(n_dest_addr))
320 def unconfig_fib_many_to_one(self, start_dest_addr, next_hop_addr, count):
323 dest_addr = int(binascii.hexlify(socket.inet_pton(socket.AF_INET,
324 start_dest_addr)), 16)
326 n_next_hop_addr = socket.inet_pton(socket.AF_INET, next_hop_addr)
327 for _ in range(count):
328 n_dest_addr = '{:08x}'.format(dest_addr).decode('hex')
329 self.vapi.ip_add_del_route(n_dest_addr, dest_addr_len,
330 n_next_hop_addr, is_add=0)
331 removed_ips.append(socket.inet_ntoa(n_dest_addr))
335 def create_stream(self, src_if, dst_if, dst_ips, count):
338 for _ in range(count):
339 dst_addr = random.choice(dst_ips)
340 info = self.create_packet_info(src_if, dst_if)
341 payload = self.info_to_payload(info)
342 p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
343 IP(src=src_if.remote_ip4, dst=dst_addr) /
344 UDP(sport=1234, dport=1234) /
347 self.extend_packet(p, random.choice(self.pg_if_packet_sizes))
352 def _find_ip_match(self, find_in, pkt):
354 if self.payload_to_info(str(p[Raw])) == \
355 self.payload_to_info(str(pkt[Raw])):
356 if p[IP].src != pkt[IP].src:
358 if p[IP].dst != pkt[IP].dst:
360 if p[UDP].sport != pkt[UDP].sport:
362 if p[UDP].dport != pkt[UDP].dport:
368 def _match_route_detail(route_detail, ip, address_length=32, table_id=0):
369 if route_detail.address == socket.inet_pton(socket.AF_INET, ip):
370 if route_detail.table_id != table_id:
372 elif route_detail.address_length != address_length:
379 def verify_capture(self, dst_interface, received_pkts, expected_pkts):
380 self.assertEqual(len(received_pkts), len(expected_pkts))
381 to_verify = list(expected_pkts)
382 for p in received_pkts:
383 self.assertEqual(p.src, dst_interface.local_mac)
384 self.assertEqual(p.dst, dst_interface.remote_mac)
385 x = self._find_ip_match(to_verify, p)
387 self.assertListEqual(to_verify, [])
389 def verify_route_dump(self, fib_dump, ips):
391 def _ip_in_route_dump(ip, fib_dump):
392 return next((route for route in fib_dump
393 if self._match_route_detail(route, ip)),
397 self.assertTrue(_ip_in_route_dump(ip, fib_dump),
398 'IP {} is not in fib dump.'.format(ip))
400 def verify_not_in_route_dump(self, fib_dump, ips):
402 def _ip_in_route_dump(ip, fib_dump):
403 return next((route for route in fib_dump
404 if self._match_route_detail(route, ip)),
408 self.assertFalse(_ip_in_route_dump(ip, fib_dump),
409 'IP {} is in fib dump.'.format(ip))
414 #. Create and initialize 3 pg interfaces.
415 #. initialize class attributes configured_routes and deleted_routes
416 to store information between tests.
418 super(TestIPv4FibCrud, cls).setUpClass()
421 # create 3 pg interfaces
422 cls.create_pg_interfaces(range(3))
424 cls.interfaces = list(cls.pg_interfaces)
426 # setup all interfaces
427 for i in cls.interfaces:
432 cls.configured_routes = []
433 cls.deleted_routes = []
434 cls.pg_if_packet_sizes = [64, 512, 1518, 9018]
437 super(TestIPv4FibCrud, cls).tearDownClass()
441 super(TestIPv4FibCrud, self).setUp()
442 self.reset_packet_infos()
444 self.configured_routes = []
445 self.deleted_routes = []
447 def test_1_add_routes(self):
450 - add 100 routes check with traffic script.
452 # config 1M FIB entries
453 self.configured_routes.extend(self.config_fib_many_to_one(
454 "10.0.0.0", self.pg0.remote_ip4, 100))
456 fib_dump = self.vapi.ip_fib_dump()
457 self.verify_route_dump(fib_dump, self.configured_routes)
459 self.stream_1 = self.create_stream(
460 self.pg1, self.pg0, self.configured_routes, 100)
461 self.stream_2 = self.create_stream(
462 self.pg2, self.pg0, self.configured_routes, 100)
463 self.pg1.add_stream(self.stream_1)
464 self.pg2.add_stream(self.stream_2)
466 self.pg_enable_capture(self.pg_interfaces)
469 pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2))
470 self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2)
472 def test_2_del_routes(self):
473 """ Delete 100 routes
475 - delete 10 routes check with traffic script.
477 # config 1M FIB entries
478 self.configured_routes.extend(self.config_fib_many_to_one(
479 "10.0.0.0", self.pg0.remote_ip4, 100))
480 self.deleted_routes.extend(self.unconfig_fib_many_to_one(
481 "10.0.0.10", self.pg0.remote_ip4, 10))
482 for x in self.deleted_routes:
483 self.configured_routes.remove(x)
485 fib_dump = self.vapi.ip_fib_dump()
486 self.verify_route_dump(fib_dump, self.configured_routes)
488 self.stream_1 = self.create_stream(
489 self.pg1, self.pg0, self.configured_routes, 100)
490 self.stream_2 = self.create_stream(
491 self.pg2, self.pg0, self.configured_routes, 100)
492 self.stream_3 = self.create_stream(
493 self.pg1, self.pg0, self.deleted_routes, 100)
494 self.stream_4 = self.create_stream(
495 self.pg2, self.pg0, self.deleted_routes, 100)
496 self.pg1.add_stream(self.stream_1 + self.stream_3)
497 self.pg2.add_stream(self.stream_2 + self.stream_4)
498 self.pg_enable_capture(self.pg_interfaces)
501 pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2))
502 self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2)
504 def test_3_add_new_routes(self):
507 - re-add 5 routes check with traffic script.
508 - add 100 routes check with traffic script.
510 # config 1M FIB entries
511 self.configured_routes.extend(self.config_fib_many_to_one(
512 "10.0.0.0", self.pg0.remote_ip4, 100))
513 self.deleted_routes.extend(self.unconfig_fib_many_to_one(
514 "10.0.0.10", self.pg0.remote_ip4, 10))
515 for x in self.deleted_routes:
516 self.configured_routes.remove(x)
518 tmp = self.config_fib_many_to_one(
519 "10.0.0.10", self.pg0.remote_ip4, 5)
520 self.configured_routes.extend(tmp)
522 self.deleted_routes.remove(x)
524 self.configured_routes.extend(self.config_fib_many_to_one(
525 "10.0.1.0", self.pg0.remote_ip4, 100))
527 fib_dump = self.vapi.ip_fib_dump()
528 self.verify_route_dump(fib_dump, self.configured_routes)
530 self.stream_1 = self.create_stream(
531 self.pg1, self.pg0, self.configured_routes, 300)
532 self.stream_2 = self.create_stream(
533 self.pg2, self.pg0, self.configured_routes, 300)
534 self.stream_3 = self.create_stream(
535 self.pg1, self.pg0, self.deleted_routes, 100)
536 self.stream_4 = self.create_stream(
537 self.pg2, self.pg0, self.deleted_routes, 100)
539 self.pg1.add_stream(self.stream_1 + self.stream_3)
540 self.pg2.add_stream(self.stream_2 + self.stream_4)
541 self.pg_enable_capture(self.pg_interfaces)
544 pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2))
545 self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2)
547 def test_4_del_routes(self):
548 """ Delete 1.5k routes
550 - delete 5 routes check with traffic script.
551 - add 100 routes check with traffic script.
553 self.deleted_routes.extend(self.unconfig_fib_many_to_one(
554 "10.0.0.0", self.pg0.remote_ip4, 15))
555 self.deleted_routes.extend(self.unconfig_fib_many_to_one(
556 "10.0.0.20", self.pg0.remote_ip4, 85))
557 self.deleted_routes.extend(self.unconfig_fib_many_to_one(
558 "10.0.1.0", self.pg0.remote_ip4, 100))
559 fib_dump = self.vapi.ip_fib_dump()
560 self.verify_not_in_route_dump(fib_dump, self.deleted_routes)
563 class TestIPNull(VppTestCase):
564 """ IPv4 routes via NULL """
567 super(TestIPNull, self).setUp()
569 # create 2 pg interfaces
570 self.create_pg_interfaces(range(2))
572 for i in self.pg_interfaces:
578 super(TestIPNull, self).tearDown()
579 for i in self.pg_interfaces:
583 def test_ip_null(self):
584 """ IP NULL route """
587 # A route via IP NULL that will reply with ICMP unreachables
589 ip_unreach = VppIpRoute(self, "10.0.0.1", 32, [], is_unreach=1)
590 ip_unreach.add_vpp_config()
592 p_unreach = (Ether(src=self.pg0.remote_mac,
593 dst=self.pg0.local_mac) /
594 IP(src=self.pg0.remote_ip4, dst="10.0.0.1") /
595 UDP(sport=1234, dport=1234) /
598 self.pg0.add_stream(p_unreach)
599 self.pg_enable_capture(self.pg_interfaces)
602 rx = self.pg0.get_capture(1)
606 self.assertEqual(icmptypes[icmp.type], "dest-unreach")
607 self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-unreachable")
608 self.assertEqual(icmp.src, self.pg0.remote_ip4)
609 self.assertEqual(icmp.dst, "10.0.0.1")
612 # ICMP replies are rate limited. so sit and spin.
617 # A route via IP NULL that will reply with ICMP prohibited
619 ip_prohibit = VppIpRoute(self, "10.0.0.2", 32, [], is_prohibit=1)
620 ip_prohibit.add_vpp_config()
622 p_prohibit = (Ether(src=self.pg0.remote_mac,
623 dst=self.pg0.local_mac) /
624 IP(src=self.pg0.remote_ip4, dst="10.0.0.2") /
625 UDP(sport=1234, dport=1234) /
628 self.pg0.add_stream(p_prohibit)
629 self.pg_enable_capture(self.pg_interfaces)
632 rx = self.pg0.get_capture(1)
637 self.assertEqual(icmptypes[icmp.type], "dest-unreach")
638 self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-prohibited")
639 self.assertEqual(icmp.src, self.pg0.remote_ip4)
640 self.assertEqual(icmp.dst, "10.0.0.2")
642 def test_ip_drop(self):
643 """ IP Drop Routes """
645 p = (Ether(src=self.pg0.remote_mac,
646 dst=self.pg0.local_mac) /
647 IP(src=self.pg0.remote_ip4, dst="1.1.1.1") /
648 UDP(sport=1234, dport=1234) /
651 r1 = VppIpRoute(self, "1.1.1.0", 24,
652 [VppRoutePath(self.pg1.remote_ip4,
653 self.pg1.sw_if_index)])
656 rx = self.send_and_expect(self.pg0, p * 65, self.pg1)
659 # insert a more specific as a drop
661 r2 = VppIpRoute(self, "1.1.1.1", 32, [], is_drop=1)
664 self.send_and_assert_no_replies(self.pg0, p * 65, "Drop Route")
665 r2.remove_vpp_config()
666 rx = self.send_and_expect(self.pg0, p * 65, self.pg1)
669 class TestIPDisabled(VppTestCase):
670 """ IPv4 disabled """
673 super(TestIPDisabled, self).setUp()
675 # create 2 pg interfaces
676 self.create_pg_interfaces(range(2))
680 self.pg0.config_ip4()
681 self.pg0.resolve_arp()
683 # PG 1 is not IP enabled
687 super(TestIPDisabled, self).tearDown()
688 for i in self.pg_interfaces:
692 def test_ip_disabled(self):
697 # one accepting interface, pg0, 2 forwarding interfaces
699 route_232_1_1_1 = VppIpMRoute(
703 MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
704 [VppMRoutePath(self.pg1.sw_if_index,
705 MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
706 VppMRoutePath(self.pg0.sw_if_index,
707 MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
708 route_232_1_1_1.add_vpp_config()
710 pu = (Ether(src=self.pg1.remote_mac,
711 dst=self.pg1.local_mac) /
712 IP(src="10.10.10.10", dst=self.pg0.remote_ip4) /
713 UDP(sport=1234, dport=1234) /
715 pm = (Ether(src=self.pg1.remote_mac,
716 dst=self.pg1.local_mac) /
717 IP(src="10.10.10.10", dst="232.1.1.1") /
718 UDP(sport=1234, dport=1234) /
722 # PG1 does not forward IP traffic
724 self.send_and_assert_no_replies(self.pg1, pu, "IP disabled")
725 self.send_and_assert_no_replies(self.pg1, pm, "IP disabled")
730 self.pg1.config_ip4()
733 # Now we get packets through
735 self.pg1.add_stream(pu)
736 self.pg_enable_capture(self.pg_interfaces)
738 rx = self.pg0.get_capture(1)
740 self.pg1.add_stream(pm)
741 self.pg_enable_capture(self.pg_interfaces)
743 rx = self.pg0.get_capture(1)
748 self.pg1.unconfig_ip4()
751 # PG1 does not forward IP traffic
753 self.send_and_assert_no_replies(self.pg1, pu, "IP disabled")
754 self.send_and_assert_no_replies(self.pg1, pm, "IP disabled")
757 class TestIPSubNets(VppTestCase):
761 super(TestIPSubNets, self).setUp()
763 # create a 2 pg interfaces
764 self.create_pg_interfaces(range(2))
766 # pg0 we will use to experiemnt
769 # pg1 is setup normally
771 self.pg1.config_ip4()
772 self.pg1.resolve_arp()
775 super(TestIPSubNets, self).tearDown()
776 for i in self.pg_interfaces:
779 def test_ip_sub_nets(self):
783 # Configure a covering route to forward so we know
784 # when we are dropping
786 cover_route = VppIpRoute(self, "10.0.0.0", 8,
787 [VppRoutePath(self.pg1.remote_ip4,
788 self.pg1.sw_if_index)])
789 cover_route.add_vpp_config()
791 p = (Ether(src=self.pg1.remote_mac,
792 dst=self.pg1.local_mac) /
793 IP(dst="10.10.10.10", src=self.pg0.local_ip4) /
794 UDP(sport=1234, dport=1234) /
797 self.pg1.add_stream(p)
798 self.pg_enable_capture(self.pg_interfaces)
800 rx = self.pg1.get_capture(1)
803 # Configure some non-/24 subnets on an IP interface
805 ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10")
807 self.vapi.sw_interface_add_del_address(
808 sw_if_index=self.pg0.sw_if_index, address=ip_addr_n,
811 pn = (Ether(src=self.pg1.remote_mac,
812 dst=self.pg1.local_mac) /
813 IP(dst="10.10.0.0", src=self.pg0.local_ip4) /
814 UDP(sport=1234, dport=1234) /
816 pb = (Ether(src=self.pg1.remote_mac,
817 dst=self.pg1.local_mac) /
818 IP(dst="10.10.255.255", src=self.pg0.local_ip4) /
819 UDP(sport=1234, dport=1234) /
822 self.send_and_assert_no_replies(self.pg1, pn, "IP Network address")
823 self.send_and_assert_no_replies(self.pg1, pb, "IP Broadcast address")
825 # remove the sub-net and we are forwarding via the cover again
826 self.vapi.sw_interface_add_del_address(
827 sw_if_index=self.pg0.sw_if_index, address=ip_addr_n,
828 address_length=16, is_add=0)
829 self.pg1.add_stream(pn)
830 self.pg_enable_capture(self.pg_interfaces)
832 rx = self.pg1.get_capture(1)
833 self.pg1.add_stream(pb)
834 self.pg_enable_capture(self.pg_interfaces)
836 rx = self.pg1.get_capture(1)
839 # A /31 is a special case where the 'other-side' is an attached host
840 # packets to that peer generate ARP requests
842 ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10")
844 self.vapi.sw_interface_add_del_address(
845 sw_if_index=self.pg0.sw_if_index, address=ip_addr_n,
848 pn = (Ether(src=self.pg1.remote_mac,
849 dst=self.pg1.local_mac) /
850 IP(dst="10.10.10.11", src=self.pg0.local_ip4) /
851 UDP(sport=1234, dport=1234) /
854 self.pg1.add_stream(pn)
855 self.pg_enable_capture(self.pg_interfaces)
857 rx = self.pg0.get_capture(1)
860 # remove the sub-net and we are forwarding via the cover again
861 self.vapi.sw_interface_add_del_address(
862 sw_if_index=self.pg0.sw_if_index, address=ip_addr_n,
863 address_length=31, is_add=0)
864 self.pg1.add_stream(pn)
865 self.pg_enable_capture(self.pg_interfaces)
867 rx = self.pg1.get_capture(1)
870 class TestIPLoadBalance(VppTestCase):
871 """ IPv4 Load-Balancing """
874 super(TestIPLoadBalance, self).setUp()
876 self.create_pg_interfaces(range(5))
877 mpls_tbl = VppMplsTable(self, 0)
878 mpls_tbl.add_vpp_config()
880 for i in self.pg_interfaces:
887 for i in self.pg_interfaces:
891 super(TestIPLoadBalance, self).tearDown()
893 def send_and_expect_load_balancing(self, input, pkts, outputs):
894 input.add_stream(pkts)
895 self.pg_enable_capture(self.pg_interfaces)
898 rx = oo._get_capture(1)
899 self.assertNotEqual(0, len(rx))
901 def send_and_expect_one_itf(self, input, pkts, itf):
902 input.add_stream(pkts)
903 self.pg_enable_capture(self.pg_interfaces)
905 rx = itf.get_capture(len(pkts))
907 def test_ip_load_balance(self):
908 """ IP Load-Balancing """
911 # An array of packets that differ only in the destination port
917 # An array of packets that differ only in the source address
923 port_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.1") /
924 UDP(sport=1234, dport=1234 + ii) /
926 port_ip_pkts.append((Ether(src=self.pg0.remote_mac,
927 dst=self.pg0.local_mac) /
929 port_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
930 dst=self.pg0.local_mac) /
931 MPLS(label=66, ttl=2) /
934 src_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.%d" % ii) /
935 UDP(sport=1234, dport=1234) /
937 src_ip_pkts.append((Ether(src=self.pg0.remote_mac,
938 dst=self.pg0.local_mac) /
940 src_mpls_pkts.append((Ether(src=self.pg0.remote_mac,
941 dst=self.pg0.local_mac) /
942 MPLS(label=66, ttl=2) /
945 route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32,
946 [VppRoutePath(self.pg1.remote_ip4,
947 self.pg1.sw_if_index),
948 VppRoutePath(self.pg2.remote_ip4,
949 self.pg2.sw_if_index)])
950 route_10_0_0_1.add_vpp_config()
952 binding = VppMplsIpBind(self, 66, "10.0.0.1", 32)
953 binding.add_vpp_config()
956 # inject the packet on pg0 - expect load-balancing across the 2 paths
957 # - since the default hash config is to use IP src,dst and port
959 # We are not going to ensure equal amounts of packets across each link,
960 # since the hash algorithm is statistical and therefore this can never
961 # be guaranteed. But wuth 64 different packets we do expect some
962 # balancing. So instead just ensure there is traffic on each link.
964 self.send_and_expect_load_balancing(self.pg0, port_ip_pkts,
965 [self.pg1, self.pg2])
966 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
967 [self.pg1, self.pg2])
968 self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts,
969 [self.pg1, self.pg2])
970 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
971 [self.pg1, self.pg2])
974 # change the flow hash config so it's only IP src,dst
975 # - now only the stream with differing source address will
978 self.vapi.set_ip_flow_hash(0, src=1, dst=1, sport=0, dport=0)
980 self.send_and_expect_load_balancing(self.pg0, src_ip_pkts,
981 [self.pg1, self.pg2])
982 self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts,
983 [self.pg1, self.pg2])
985 self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2)
988 # change the flow hash config back to defaults
990 self.vapi.set_ip_flow_hash(0, src=1, dst=1, sport=1, dport=1)
994 # - testing that 2 stages of load-balancing occurs and there is no
995 # polarisation (i.e. only 2 of 4 paths are used)
1000 for ii in range(257):
1001 port_pkts.append((Ether(src=self.pg0.remote_mac,
1002 dst=self.pg0.local_mac) /
1003 IP(dst="1.1.1.1", src="20.0.0.1") /
1004 UDP(sport=1234, dport=1234 + ii) /
1006 src_pkts.append((Ether(src=self.pg0.remote_mac,
1007 dst=self.pg0.local_mac) /
1008 IP(dst="1.1.1.1", src="20.0.0.%d" % ii) /
1009 UDP(sport=1234, dport=1234) /
1012 route_10_0_0_2 = VppIpRoute(self, "10.0.0.2", 32,
1013 [VppRoutePath(self.pg3.remote_ip4,
1014 self.pg3.sw_if_index),
1015 VppRoutePath(self.pg4.remote_ip4,
1016 self.pg4.sw_if_index)])
1017 route_10_0_0_2.add_vpp_config()
1019 route_1_1_1_1 = VppIpRoute(self, "1.1.1.1", 32,
1020 [VppRoutePath("10.0.0.2", 0xffffffff),
1021 VppRoutePath("10.0.0.1", 0xffffffff)])
1022 route_1_1_1_1.add_vpp_config()
1025 # inject the packet on pg0 - expect load-balancing across all 4 paths
1027 self.vapi.cli("clear trace")
1028 self.send_and_expect_load_balancing(self.pg0, port_pkts,
1029 [self.pg1, self.pg2,
1030 self.pg3, self.pg4])
1031 self.send_and_expect_load_balancing(self.pg0, src_pkts,
1032 [self.pg1, self.pg2,
1033 self.pg3, self.pg4])
1036 # Recursive prefixes
1037 # - testing that 2 stages of load-balancing, no choices
1041 for ii in range(257):
1042 port_pkts.append((Ether(src=self.pg0.remote_mac,
1043 dst=self.pg0.local_mac) /
1044 IP(dst="1.1.1.2", src="20.0.0.2") /
1045 UDP(sport=1234, dport=1234 + ii) /
1048 route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32,
1049 [VppRoutePath(self.pg3.remote_ip4,
1050 self.pg3.sw_if_index)])
1051 route_10_0_0_3.add_vpp_config()
1053 route_1_1_1_2 = VppIpRoute(self, "1.1.1.2", 32,
1054 [VppRoutePath("10.0.0.3", 0xffffffff)])
1055 route_1_1_1_2.add_vpp_config()
1058 # inject the packet on pg0 - expect load-balancing across all 4 paths
1060 self.vapi.cli("clear trace")
1061 self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
1064 class TestIPVlan0(VppTestCase):
1068 super(TestIPVlan0, self).setUp()
1070 self.create_pg_interfaces(range(2))
1071 mpls_tbl = VppMplsTable(self, 0)
1072 mpls_tbl.add_vpp_config()
1074 for i in self.pg_interfaces:
1081 for i in self.pg_interfaces:
1085 super(TestIPVlan0, self).tearDown()
1087 def test_ip_vlan_0(self):
1090 pkts = (Ether(src=self.pg0.remote_mac,
1091 dst=self.pg0.local_mac) /
1093 IP(dst=self.pg1.remote_ip4,
1094 src=self.pg0.remote_ip4) /
1095 UDP(sport=1234, dport=1234) /
1096 Raw('\xa5' * 100)) * 65
1099 # Expect that packets sent on VLAN-0 are forwarded on the
1102 self.send_and_expect(self.pg0, pkts, self.pg1)
1105 class TestIPPunt(VppTestCase):
1106 """ IPv4 Punt Police/Redirect """
1109 super(TestIPPunt, self).setUp()
1111 self.create_pg_interfaces(range(4))
1113 for i in self.pg_interfaces:
1119 super(TestIPPunt, self).tearDown()
1120 for i in self.pg_interfaces:
1124 def test_ip_punt(self):
1125 """ IP punt police and redirect """
1127 p = (Ether(src=self.pg0.remote_mac,
1128 dst=self.pg0.local_mac) /
1129 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
1130 TCP(sport=1234, dport=1234) /
1136 # Configure a punt redirect via pg1.
1138 nh_addr = self.pg1.remote_ip4
1139 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1140 self.pg1.sw_if_index,
1143 self.send_and_expect(self.pg0, pkts, self.pg1)
1148 policer = self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0,
1150 self.vapi.ip_punt_police(policer.policer_index)
1152 self.vapi.cli("clear trace")
1153 self.pg0.add_stream(pkts)
1154 self.pg_enable_capture(self.pg_interfaces)
1158 # the number of packet recieved should be greater than 0,
1159 # but not equal to the number sent, since some were policed
1161 rx = self.pg1._get_capture(1)
1162 self.assertGreater(len(rx), 0)
1163 self.assertLess(len(rx), len(pkts))
1166 # remove the poilcer. back to full rx
1168 self.vapi.ip_punt_police(policer.policer_index, is_add=0)
1169 self.vapi.policer_add_del("ip4-punt", 400, 0, 10, 0,
1170 rate_type=1, is_add=0)
1171 self.send_and_expect(self.pg0, pkts, self.pg1)
1174 # remove the redirect. expect full drop.
1176 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1177 self.pg1.sw_if_index,
1180 self.send_and_assert_no_replies(self.pg0, pkts,
1181 "IP no punt config")
1184 # Add a redirect that is not input port selective
1186 self.vapi.ip_punt_redirect(0xffffffff,
1187 self.pg1.sw_if_index,
1189 self.send_and_expect(self.pg0, pkts, self.pg1)
1191 self.vapi.ip_punt_redirect(0xffffffff,
1192 self.pg1.sw_if_index,
1196 def test_ip_punt_dump(self):
1197 """ IP4 punt redirect dump"""
1200 # Configure a punt redirects
1202 nh_address = self.pg3.remote_ip4
1203 self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
1204 self.pg3.sw_if_index,
1206 self.vapi.ip_punt_redirect(self.pg1.sw_if_index,
1207 self.pg3.sw_if_index,
1209 self.vapi.ip_punt_redirect(self.pg2.sw_if_index,
1210 self.pg3.sw_if_index,
1214 # Dump pg0 punt redirects
1216 punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index)
1218 self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index)
1221 # Dump punt redirects for all interfaces
1223 punts = self.vapi.ip_punt_redirect_dump(0xffffffff)
1224 self.assertEqual(len(punts), 3)
1226 self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index)
1227 self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip4)
1228 self.assertEqual(str(punts[2].punt.nh), '0.0.0.0')
1231 class TestIPDeag(VppTestCase):
1232 """ IPv4 Deaggregate Routes """
1235 super(TestIPDeag, self).setUp()
1237 self.create_pg_interfaces(range(3))
1239 for i in self.pg_interfaces:
1245 super(TestIPDeag, self).tearDown()
1246 for i in self.pg_interfaces:
1250 def test_ip_deag(self):
1251 """ IP Deag Routes """
1254 # Create a table to be used for:
1255 # 1 - another destination address lookup
1256 # 2 - a source address lookup
1258 table_dst = VppIpTable(self, 1)
1259 table_src = VppIpTable(self, 2)
1260 table_dst.add_vpp_config()
1261 table_src.add_vpp_config()
1264 # Add a route in the default table to point to a deag/
1265 # second lookup in each of these tables
1267 route_to_dst = VppIpRoute(self, "1.1.1.1", 32,
1268 [VppRoutePath("0.0.0.0",
1271 route_to_src = VppIpRoute(self, "1.1.1.2", 32,
1272 [VppRoutePath("0.0.0.0",
1275 is_source_lookup=1)])
1276 route_to_dst.add_vpp_config()
1277 route_to_src.add_vpp_config()
1280 # packets to these destination are dropped, since they'll
1281 # hit the respective default routes in the second table
1283 p_dst = (Ether(src=self.pg0.remote_mac,
1284 dst=self.pg0.local_mac) /
1285 IP(src="5.5.5.5", dst="1.1.1.1") /
1286 TCP(sport=1234, dport=1234) /
1288 p_src = (Ether(src=self.pg0.remote_mac,
1289 dst=self.pg0.local_mac) /
1290 IP(src="2.2.2.2", dst="1.1.1.2") /
1291 TCP(sport=1234, dport=1234) /
1293 pkts_dst = p_dst * 257
1294 pkts_src = p_src * 257
1296 self.send_and_assert_no_replies(self.pg0, pkts_dst,
1298 self.send_and_assert_no_replies(self.pg0, pkts_src,
1302 # add a route in the dst table to forward via pg1
1304 route_in_dst = VppIpRoute(self, "1.1.1.1", 32,
1305 [VppRoutePath(self.pg1.remote_ip4,
1306 self.pg1.sw_if_index)],
1308 route_in_dst.add_vpp_config()
1309 self.send_and_expect(self.pg0, pkts_dst, self.pg1)
1312 # add a route in the src table to forward via pg2
1314 route_in_src = VppIpRoute(self, "2.2.2.2", 32,
1315 [VppRoutePath(self.pg2.remote_ip4,
1316 self.pg2.sw_if_index)],
1318 route_in_src.add_vpp_config()
1319 self.send_and_expect(self.pg0, pkts_src, self.pg2)
1322 # loop in the lookup DP
1324 route_loop = VppIpRoute(self, "2.2.2.3", 32,
1325 [VppRoutePath("0.0.0.0",
1328 route_loop.add_vpp_config()
1330 p_l = (Ether(src=self.pg0.remote_mac,
1331 dst=self.pg0.local_mac) /
1332 IP(src="2.2.2.4", dst="2.2.2.3") /
1333 TCP(sport=1234, dport=1234) /
1336 self.send_and_assert_no_replies(self.pg0, p_l * 257,
1340 class TestIPInput(VppTestCase):
1341 """ IPv4 Input Exceptions """
1344 super(TestIPInput, self).setUp()
1346 self.create_pg_interfaces(range(2))
1348 for i in self.pg_interfaces:
1354 super(TestIPInput, self).tearDown()
1355 for i in self.pg_interfaces:
1359 def test_ip_input(self):
1360 """ IP Input Exceptions """
1362 # i can't find a way in scapy to construct an IP packet
1363 # with a length less than the IP header length
1366 # Packet too short - this is forwarded
1368 p_short = (Ether(src=self.pg0.remote_mac,
1369 dst=self.pg0.local_mac) /
1370 IP(src=self.pg0.remote_ip4,
1371 dst=self.pg1.remote_ip4,
1373 UDP(sport=1234, dport=1234) /
1376 rx = self.send_and_expect(self.pg0, p_short * 65, self.pg1)
1379 # Packet too long - this is dropped
1381 p_long = (Ether(src=self.pg0.remote_mac,
1382 dst=self.pg0.local_mac) /
1383 IP(src=self.pg0.remote_ip4,
1384 dst=self.pg1.remote_ip4,
1386 UDP(sport=1234, dport=1234) /
1389 rx = self.send_and_assert_no_replies(self.pg0, p_long * 65,
1393 # bad chksum - this is dropped
1395 p_chksum = (Ether(src=self.pg0.remote_mac,
1396 dst=self.pg0.local_mac) /
1397 IP(src=self.pg0.remote_ip4,
1398 dst=self.pg1.remote_ip4,
1400 UDP(sport=1234, dport=1234) /
1403 rx = self.send_and_assert_no_replies(self.pg0, p_chksum * 65,
1407 # bad version - this is dropped
1409 p_ver = (Ether(src=self.pg0.remote_mac,
1410 dst=self.pg0.local_mac) /
1411 IP(src=self.pg0.remote_ip4,
1412 dst=self.pg1.remote_ip4,
1414 UDP(sport=1234, dport=1234) /
1417 rx = self.send_and_assert_no_replies(self.pg0, p_ver * 65,
1421 # fragment offset 1 - this is dropped
1423 p_frag = (Ether(src=self.pg0.remote_mac,
1424 dst=self.pg0.local_mac) /
1425 IP(src=self.pg0.remote_ip4,
1426 dst=self.pg1.remote_ip4,
1428 UDP(sport=1234, dport=1234) /
1431 rx = self.send_and_assert_no_replies(self.pg0, p_frag * 65,
1435 # TTL expired packet
1437 p_ttl = (Ether(src=self.pg0.remote_mac,
1438 dst=self.pg0.local_mac) /
1439 IP(src=self.pg0.remote_ip4,
1440 dst=self.pg1.remote_ip4,
1442 UDP(sport=1234, dport=1234) /
1445 rx = self.send_and_expect(self.pg0, p_ttl * 65, self.pg0)
1450 self.assertEqual(icmptypes[icmp.type], "time-exceeded")
1451 self.assertEqual(icmpcodes[icmp.type][icmp.code],
1452 "ttl-zero-during-transit")
1453 self.assertEqual(icmp.src, self.pg0.remote_ip4)
1454 self.assertEqual(icmp.dst, self.pg1.remote_ip4)
1459 p_mtu = (Ether(src=self.pg0.remote_mac,
1460 dst=self.pg0.local_mac) /
1461 IP(src=self.pg0.remote_ip4,
1462 dst=self.pg1.remote_ip4,
1463 ttl=10, flags='DF') /
1464 UDP(sport=1234, dport=1234) /
1467 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1500, 0, 0, 0])
1469 rx = self.send_and_expect(self.pg0, p_mtu * 65, self.pg0)
1473 self.assertEqual(icmptypes[icmp.type], "dest-unreach")
1474 self.assertEqual(icmpcodes[icmp.type][icmp.code],
1475 "fragmentation-needed")
1476 self.assertEqual(icmp.src, self.pg0.remote_ip4)
1477 self.assertEqual(icmp.dst, self.pg1.remote_ip4)
1479 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2500, 0, 0, 0])
1480 rx = self.send_and_expect(self.pg0, p_mtu * 65, self.pg1)
1482 # Reset MTU for subsequent tests
1483 self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0])
1486 # source address 0.0.0.0 and 25.255.255.255 and for-us
1488 p_s0 = (Ether(src=self.pg0.remote_mac,
1489 dst=self.pg0.local_mac) /
1491 dst=self.pg0.local_ip4) /
1493 Raw(load='\x0a' * 18))
1494 rx = self.send_and_assert_no_replies(self.pg0, p_s0 * 17)
1496 p_s0 = (Ether(src=self.pg0.remote_mac,
1497 dst=self.pg0.local_mac) /
1498 IP(src="255.255.255.255",
1499 dst=self.pg0.local_ip4) /
1501 Raw(load='\x0a' * 18))
1502 rx = self.send_and_assert_no_replies(self.pg0, p_s0 * 17)
1505 class TestIPDirectedBroadcast(VppTestCase):
1506 """ IPv4 Directed Broadcast """
1509 super(TestIPDirectedBroadcast, self).setUp()
1511 self.create_pg_interfaces(range(2))
1513 for i in self.pg_interfaces:
1517 super(TestIPDirectedBroadcast, self).tearDown()
1518 for i in self.pg_interfaces:
1521 def test_ip_input(self):
1522 """ IP Directed Broadcast """
1525 # set the directed broadcast on pg0 first, then config IP4 addresses
1526 # for pg1 directed broadcast is always disabled
1527 self.vapi.sw_interface_set_ip_directed_broadcast(
1528 self.pg0.sw_if_index, 1)
1530 p0 = (Ether(src=self.pg1.remote_mac,
1531 dst=self.pg1.local_mac) /
1533 dst=self.pg0._local_ip4_bcast) /
1534 UDP(sport=1234, dport=1234) /
1536 p1 = (Ether(src=self.pg0.remote_mac,
1537 dst=self.pg0.local_mac) /
1539 dst=self.pg1._local_ip4_bcast) /
1540 UDP(sport=1234, dport=1234) /
1543 self.pg0.config_ip4()
1544 self.pg0.resolve_arp()
1545 self.pg1.config_ip4()
1546 self.pg1.resolve_arp()
1549 # test packet is L2 broadcast
1551 rx = self.send_and_expect(self.pg1, p0 * 65, self.pg0)
1552 self.assertTrue(rx[0][Ether].dst, "ff:ff:ff:ff:ff:ff")
1554 self.send_and_assert_no_replies(self.pg0, p1 * 65,
1555 "directed broadcast disabled")
1558 # toggle directed broadcast on pg0
1560 self.vapi.sw_interface_set_ip_directed_broadcast(
1561 self.pg0.sw_if_index, 0)
1562 self.send_and_assert_no_replies(self.pg1, p0 * 65,
1563 "directed broadcast disabled")
1565 self.vapi.sw_interface_set_ip_directed_broadcast(
1566 self.pg0.sw_if_index, 1)
1567 rx = self.send_and_expect(self.pg1, p0 * 65, self.pg0)
1569 self.pg0.unconfig_ip4()
1570 self.pg1.unconfig_ip4()
1573 class TestIPLPM(VppTestCase):
1574 """ IPv4 longest Prefix Match """
1577 super(TestIPLPM, self).setUp()
1579 self.create_pg_interfaces(range(4))
1581 for i in self.pg_interfaces:
1587 super(TestIPLPM, self).tearDown()
1588 for i in self.pg_interfaces:
1592 def test_ip_lpm(self):
1593 """ IP longest Prefix Match """
1595 s_24 = VppIpRoute(self, "10.1.2.0", 24,
1596 [VppRoutePath(self.pg1.remote_ip4,
1597 self.pg1.sw_if_index)])
1598 s_24.add_vpp_config()
1599 s_8 = VppIpRoute(self, "10.0.0.0", 8,
1600 [VppRoutePath(self.pg2.remote_ip4,
1601 self.pg2.sw_if_index)])
1602 s_8.add_vpp_config()
1604 p_8 = (Ether(src=self.pg0.remote_mac,
1605 dst=self.pg0.local_mac) /
1608 UDP(sport=1234, dport=1234) /
1610 p_24 = (Ether(src=self.pg0.remote_mac,
1611 dst=self.pg0.local_mac) /
1614 UDP(sport=1234, dport=1234) /
1617 self.logger.info(self.vapi.cli("sh ip fib mtrie"))
1618 rx = self.send_and_expect(self.pg0, p_8 * 65, self.pg2)
1619 rx = self.send_and_expect(self.pg0, p_24 * 65, self.pg1)
1622 class TestIPv4Frag(VppTestCase):
1623 """ IPv4 fragmentation """
1626 def setUpClass(cls):
1627 super(TestIPv4Frag, cls).setUpClass()
1629 cls.create_pg_interfaces([0, 1])
1630 cls.src_if = cls.pg0
1631 cls.dst_if = cls.pg1
1633 # setup all interfaces
1634 for i in cls.pg_interfaces:
1639 def test_frag_large_packets(self):
1640 """ Fragmentation of large packets """
1642 p = (Ether(dst=self.src_if.local_mac, src=self.src_if.remote_mac) /
1643 IP(src=self.src_if.remote_ip4, dst=self.dst_if.remote_ip4) /
1644 UDP(sport=1234, dport=5678) / Raw())
1645 self.extend_packet(p, 6000, "abcde")
1646 saved_payload = p[Raw].load
1648 # Force fragmentation by setting MTU of output interface
1649 # lower than packet size
1650 self.vapi.sw_interface_set_mtu(self.dst_if.sw_if_index,
1653 self.pg_enable_capture()
1654 self.src_if.add_stream(p)
1657 # Expecting 3 fragments because size of created fragments currently
1658 # cannot be larger then VPP buffer size (which is 2048)
1659 packets = self.dst_if.get_capture(3)
1661 # Assume VPP sends the fragments in order
1664 payload_offset = p.frag * 8
1665 if payload_offset > 0:
1666 payload_offset -= 8 # UDP header is not in payload
1667 self.assert_equal(payload_offset, len(payload))
1668 payload += p[Raw].load
1669 self.assert_equal(payload, saved_payload, "payload")
1672 if __name__ == '__main__':
1673 unittest.main(testRunner=VppTestRunner)