X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=test%2Ftest_mpls.py;h=e7fb288f8568fd7e664637985dbc7dad37504759;hp=45af470421ebffc199a050eecd1f90eba86f0af4;hb=775f73c;hpb=8fe8cc21d1e389d8e971a303e53c9e703aaaa0e0 diff --git a/test/test_mpls.py b/test/test_mpls.py index 45af470421e..e7fb288f856 100644 --- a/test/test_mpls.py +++ b/test/test_mpls.py @@ -2,80 +2,201 @@ import unittest import socket -from logging import * from framework import VppTestCase, VppTestRunner -from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsRoute, \ + VppMplsIpBind, VppIpMRoute, VppMRoutePath, \ + MRouteItfFlags, MRouteEntryFlags, VppIpTable, VppMplsTable, \ + VppMplsLabel, MplsLspMode, find_mpls_route +from vpp_mpls_tunnel_interface import VppMPLSTunnelInterface from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q, ARP -from scapy.layers.inet import IP, UDP -from scapy.layers.inet6 import ICMPv6ND_NS, IPv6, UDP +from scapy.layers.l2 import Ether +from scapy.layers.inet import IP, UDP, ICMP +from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded from scapy.contrib.mpls import MPLS + +def verify_filter(capture, sent): + if not len(capture) == len(sent): + # filter out any IPv6 RAs from the capture + for p in capture: + if p.haslayer(IPv6): + capture.remove(p) + return capture + + +def verify_mpls_stack(tst, rx, mpls_labels): + # the rx'd packet has the MPLS label popped + eth = rx[Ether] + tst.assertEqual(eth.type, 0x8847) + + rx_mpls = rx[MPLS] + + for ii in range(len(mpls_labels)): + tst.assertEqual(rx_mpls.label, mpls_labels[ii].value) + tst.assertEqual(rx_mpls.cos, mpls_labels[ii].exp) + tst.assertEqual(rx_mpls.ttl, mpls_labels[ii].ttl) + + if ii == len(mpls_labels) - 1: + tst.assertEqual(rx_mpls.s, 1) + else: + # not end of stack + tst.assertEqual(rx_mpls.s, 0) + # pop the label to expose the next + rx_mpls = rx_mpls[MPLS].payload + + class TestMPLS(VppTestCase): """ MPLS Test Case """ - @classmethod - def setUpClass(cls): - super(TestMPLS, cls).setUpClass() - def setUp(self): super(TestMPLS, self).setUp() # create 2 pg interfaces - self.create_pg_interfaces(range(3)) + self.create_pg_interfaces(range(4)) # setup both interfaces # assign them different tables. table_id = 0 + self.tables = [] + + tbl = VppMplsTable(self, 0) + tbl.add_vpp_config() + self.tables.append(tbl) for i in self.pg_interfaces: i.admin_up() + + if table_id != 0: + tbl = VppIpTable(self, table_id) + tbl.add_vpp_config() + self.tables.append(tbl) + tbl = VppIpTable(self, table_id, is_ip6=1) + tbl.add_vpp_config() + self.tables.append(tbl) + i.set_table_ip4(table_id) i.set_table_ip6(table_id) i.config_ip4() - i.config_ip6() - i.enable_mpls() i.resolve_arp() + i.config_ip6() i.resolve_ndp() + i.enable_mpls() table_id += 1 def tearDown(self): + for i in self.pg_interfaces: + i.unconfig_ip4() + i.unconfig_ip6() + i.ip6_disable() + i.set_table_ip4(0) + i.set_table_ip6(0) + i.disable_mpls() + i.admin_down() super(TestMPLS, self).tearDown() - def create_stream_ip4(self, src_if, mpls_label, mpls_ttl): + # the default of 64 matches the IP packet TTL default + def create_stream_labelled_ip4( + self, + src_if, + mpls_labels, + ping=0, + ip_itf=None, + dst_ip=None, + chksum=None, + ip_ttl=64, + n=257): + self.reset_packet_infos() + pkts = [] + for i in range(0, n): + info = self.create_packet_info(src_if, src_if) + payload = self.info_to_payload(info) + p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) + + for ii in range(len(mpls_labels)): + p = p / MPLS(label=mpls_labels[ii].value, + ttl=mpls_labels[ii].ttl, + cos=mpls_labels[ii].exp) + if not ping: + if not dst_ip: + p = (p / IP(src=src_if.local_ip4, + dst=src_if.remote_ip4, + ttl=ip_ttl) / + UDP(sport=1234, dport=1234) / + Raw(payload)) + else: + p = (p / IP(src=src_if.local_ip4, dst=dst_ip, ttl=ip_ttl) / + UDP(sport=1234, dport=1234) / + Raw(payload)) + else: + p = (p / IP(src=ip_itf.remote_ip4, + dst=ip_itf.local_ip4, + ttl=ip_ttl) / + ICMP()) + + if chksum: + p[IP].chksum = chksum + info.data = p.copy() + pkts.append(p) + return pkts + + def create_stream_ip4(self, src_if, dst_ip, ip_ttl=64, ip_dscp=0): + self.reset_packet_infos() pkts = [] for i in range(0, 257): - info = self.create_packet_info(src_if.sw_if_index, - src_if.sw_if_index) + info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / - MPLS(label=mpls_label, ttl=mpls_ttl) / - IP(src=src_if.remote_ip4, dst=src_if.remote_ip4) / + IP(src=src_if.remote_ip4, dst=dst_ip, + ttl=ip_ttl, tos=ip_dscp) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts - def create_stream_ip6(self, src_if, mpls_label, mpls_ttl): + def create_stream_ip6(self, src_if, dst_ip, ip_ttl=64, ip_dscp=0): + self.reset_packet_infos() pkts = [] for i in range(0, 257): - info = self.create_packet_info(src_if.sw_if_index, - src_if.sw_if_index) + info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / - MPLS(label=mpls_label, ttl=mpls_ttl) / - IPv6(src=src_if.remote_ip6, dst=src_if.remote_ip6) / + IPv6(src=src_if.remote_ip6, dst=dst_ip, + hlim=ip_ttl, tc=ip_dscp) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts - def verify_capture_ip4(self, src_if, capture, sent): + def create_stream_labelled_ip6(self, src_if, mpls_labels, + hlim=64, dst_ip=None): + if dst_ip is None: + dst_ip = src_if.remote_ip6 + self.reset_packet_infos() + pkts = [] + for i in range(0, 257): + info = self.create_packet_info(src_if, src_if) + payload = self.info_to_payload(info) + p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) + for l in mpls_labels: + p = p / MPLS(label=l.value, ttl=l.ttl, cos=l.exp) + + p = p / (IPv6(src=src_if.remote_ip6, dst=dst_ip, hlim=hlim) / + UDP(sport=1234, dport=1234) / + Raw(payload)) + info.data = p.copy() + pkts.append(p) + return pkts + + def verify_capture_ip4(self, src_if, capture, sent, ping_resp=0, + ip_ttl=None, ip_dscp=0): try: + capture = verify_filter(capture, sent) + self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): @@ -83,21 +204,117 @@ class TestMPLS(VppTestCase): rx = capture[i] # the rx'd packet has the MPLS label popped - eth = rx[Ether]; - self.assertEqual(eth.type, 0x800); + eth = rx[Ether] + self.assertEqual(eth.type, 0x800) + + tx_ip = tx[IP] + rx_ip = rx[IP] + + if not ping_resp: + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + self.assertEqual(rx_ip.tos, ip_dscp) + if not ip_ttl: + # IP processing post pop has decremented the TTL + self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl) + else: + self.assertEqual(rx_ip.ttl, ip_ttl) + else: + self.assertEqual(rx_ip.src, tx_ip.dst) + self.assertEqual(rx_ip.dst, tx_ip.src) + + except: + raise + + def verify_capture_labelled_ip4(self, src_if, capture, sent, + mpls_labels, ip_ttl=None): + try: + capture = verify_filter(capture, sent) + + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + tx = sent[i] + rx = capture[i] + tx_ip = tx[IP] + rx_ip = rx[IP] + + verify_mpls_stack(self, rx, mpls_labels) + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + if not ip_ttl: + # IP processing post pop has decremented the TTL + self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl) + else: + self.assertEqual(rx_ip.ttl, ip_ttl) + + except: + raise + + def verify_capture_labelled_ip6(self, src_if, capture, sent, + mpls_labels, ip_ttl=None): + try: + capture = verify_filter(capture, sent) + + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + tx = sent[i] + rx = capture[i] + tx_ip = tx[IPv6] + rx_ip = rx[IPv6] + + verify_mpls_stack(self, rx, mpls_labels) + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + if not ip_ttl: + # IP processing post pop has decremented the TTL + self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) + else: + self.assertEqual(rx_ip.hlim, ip_ttl) + except: + raise + + def verify_capture_tunneled_ip4(self, src_if, capture, sent, mpls_labels): + try: + capture = verify_filter(capture, sent) + + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + tx = sent[i] + rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] + verify_mpls_stack(self, rx, mpls_labels) + self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) # IP processing post pop has decremented the TTL - self.assertEqual(rx_ip.ttl+1, tx_ip.ttl) + self.assertEqual(rx_ip.ttl + 1, tx_ip.ttl) + + except: + raise + + def verify_capture_labelled(self, src_if, capture, sent, + mpls_labels): + try: + capture = verify_filter(capture, sent) + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + rx = capture[i] + verify_mpls_stack(self, rx, mpls_labels) except: - raise; + raise - def verify_capture_ip6(self, src_if, capture, sent): + def verify_capture_ip6(self, src_if, capture, sent, + ip_hlim=None, ip_dscp=0): try: self.assertEqual(len(capture), len(sent)) @@ -106,104 +323,1715 @@ class TestMPLS(VppTestCase): rx = capture[i] # the rx'd packet has the MPLS label popped - eth = rx[Ether]; - self.assertEqual(eth.type, 0x86DD); + eth = rx[Ether] + self.assertEqual(eth.type, 0x86DD) tx_ip = tx[IPv6] rx_ip = rx[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) + self.assertEqual(rx_ip.tc, ip_dscp) # IP processing post pop has decremented the TTL - self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) + if not ip_hlim: + self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) + else: + self.assertEqual(rx_ip.hlim, ip_hlim) except: - raise; + raise + + def verify_capture_ip6_icmp(self, src_if, capture, sent): + try: + self.assertEqual(len(capture), len(sent)) + for i in range(len(capture)): + tx = sent[i] + rx = capture[i] - def test_v4_exp_null(self): - """ MPLS V4 Explicit NULL test """ + # the rx'd packet has the MPLS label popped + eth = rx[Ether] + self.assertEqual(eth.type, 0x86DD) - # - # The first test case has an MPLS TTL of 0 - # all packet should be dropped - # - tx = self.create_stream_ip4(self.pg0, 0, 0) - self.pg0.add_stream(tx) + tx_ip = tx[IPv6] + rx_ip = rx[IPv6] - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() + self.assertEqual(rx_ip.dst, tx_ip.src) + # ICMP sourced from the interface's address + self.assertEqual(rx_ip.src, src_if.local_ip6) + # hop-limit reset to 255 for IMCP packet + self.assertEqual(rx_ip.hlim, 255) - rx = self.pg0.get_capture() + icmp = rx[ICMPv6TimeExceeded] - try: - self.assertEqual(0, len(rx)); except: - error("MPLS TTL=0 packets forwarded") - error(packet.show()) raise + def test_swap(self): + """ MPLS label swap tests """ + # - # a stream with a non-zero MPLS TTL + # A simple MPLS xconnect - eos label in label out + # + route_32_eos = VppMplsRoute(self, 32, 1, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(33)])]) + route_32_eos.add_vpp_config() + + self.assertTrue( + find_mpls_route(self, 0, 32, 1, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(33)])])) + + # + # a stream that matches the route for 10.0.0.1 # PG0 is in the default table # - self.vapi.cli("clear trace") - tx = self.create_stream_ip4(self.pg0, 0, 2) - self.pg0.add_stream(tx) + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(32, ttl=32, exp=1)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(33, ttl=31, exp=1)]) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() + self.assertEqual(route_32_eos.get_stats_to()['packets'], 257) - rx = self.pg0.get_capture() - self.verify_capture_ip4(self.pg0, rx, tx) + # + # A simple MPLS xconnect - non-eos label in label out + # + route_32_neos = VppMplsRoute(self, 32, 0, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(33)])]) + route_32_neos.add_vpp_config() # - # a stream with a non-zero MPLS TTL - # PG1 is in table 1 - # we are ensuring the post-pop lookup occurs in the VRF table + # a stream that matches the route for 10.0.0.1 + # PG0 is in the default table # - self.vapi.cli("clear trace") - tx = self.create_stream_ip4(self.pg1, 0, 2) - self.pg1.add_stream(tx) + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(32, ttl=21, exp=7), + VppMplsLabel(99)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(33, ttl=20, exp=7), + VppMplsLabel(99)]) + self.assertEqual(route_32_neos.get_stats_to()['packets'], 257) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() + # + # A simple MPLS xconnect - non-eos label in label out, uniform mode + # + route_42_neos = VppMplsRoute( + self, 42, 0, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(43, MplsLspMode.UNIFORM)])]) + route_42_neos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(42, ttl=21, exp=7), + VppMplsLabel(99)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(43, ttl=20, exp=7), + VppMplsLabel(99)]) + + # + # An MPLS xconnect - EOS label in IP out + # + route_33_eos = VppMplsRoute(self, 33, 1, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[])]) + route_33_eos.add_vpp_config() - rx = self.pg1.get_capture() + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(33)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_capture_ip4(self.pg0, rx, tx) - def test_v6_exp_null(self): - """ MPLS V6 Explicit NULL test """ + # + # disposed packets have an invalid IPv4 checkusm + # + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(33)], + dst_ip=self.pg0.remote_ip4, + n=65, + chksum=1) + self.send_and_assert_no_replies(self.pg0, tx, "Invalid Checksum") # - # a stream with a non-zero MPLS TTL + # An MPLS xconnect - EOS label in IP out, uniform mode + # + route_3333_eos = VppMplsRoute( + self, 3333, 1, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(3, MplsLspMode.UNIFORM)])]) + route_3333_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip4( + self.pg0, + [VppMplsLabel(3333, ttl=55, exp=3)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip4(self.pg0, rx, tx, ip_ttl=54, ip_dscp=0x60) + tx = self.create_stream_labelled_ip4( + self.pg0, + [VppMplsLabel(3333, ttl=66, exp=4)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip4(self.pg0, rx, tx, ip_ttl=65, ip_dscp=0x80) + + # + # An MPLS xconnect - EOS label in IPv6 out + # + route_333_eos = VppMplsRoute( + self, 333, 1, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index, + labels=[], + proto=DpoProto.DPO_PROTO_IP6)]) + route_333_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip6(self.pg0, [VppMplsLabel(333)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6(self.pg0, rx, tx) + + # + # disposed packets have an TTL expired + # + tx = self.create_stream_labelled_ip6(self.pg0, + [VppMplsLabel(333, ttl=64)], + dst_ip=self.pg1.remote_ip6, + hlim=1) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6_icmp(self.pg0, rx, tx) + + # + # An MPLS xconnect - EOS label in IPv6 out w imp-null + # + route_334_eos = VppMplsRoute( + self, 334, 1, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index, + labels=[VppMplsLabel(3)], + proto=DpoProto.DPO_PROTO_IP6)]) + route_334_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip6(self.pg0, + [VppMplsLabel(334, ttl=64)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6(self.pg0, rx, tx) + + # + # An MPLS xconnect - EOS label in IPv6 out w imp-null in uniform mode + # + route_335_eos = VppMplsRoute( + self, 335, 1, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index, + labels=[VppMplsLabel(3, MplsLspMode.UNIFORM)], + proto=DpoProto.DPO_PROTO_IP6)]) + route_335_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip6( + self.pg0, + [VppMplsLabel(335, ttl=27, exp=4)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6(self.pg0, rx, tx, ip_hlim=26, ip_dscp=0x80) + + # + # disposed packets have an TTL expired + # + tx = self.create_stream_labelled_ip6(self.pg0, [VppMplsLabel(334)], + dst_ip=self.pg1.remote_ip6, + hlim=0) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6_icmp(self.pg0, rx, tx) + + # + # An MPLS xconnect - non-EOS label in IP out - an invalid configuration + # so this traffic should be dropped. + # + route_33_neos = VppMplsRoute(self, 33, 0, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[])]) + route_33_neos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(33), + VppMplsLabel(99)]) + self.send_and_assert_no_replies( + self.pg0, tx, + "MPLS non-EOS packets popped and forwarded") + + # + # A recursive EOS x-connect, which resolves through another x-connect + # in pipe mode + # + route_34_eos = VppMplsRoute(self, 34, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_via_label=32, + labels=[VppMplsLabel(44), + VppMplsLabel(45)])]) + route_34_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(34, ttl=3)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(33), + VppMplsLabel(44), + VppMplsLabel(45, ttl=2)]) + + self.assertEqual(route_34_eos.get_stats_to()['packets'], 257) + self.assertEqual(route_32_neos.get_stats_via()['packets'], 257) + + # + # A recursive EOS x-connect, which resolves through another x-connect + # in uniform mode + # + route_35_eos = VppMplsRoute( + self, 35, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_via_label=42, + labels=[VppMplsLabel(44)])]) + route_35_eos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(35, ttl=3)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(43, ttl=2), + VppMplsLabel(44, ttl=2)]) + + # + # A recursive non-EOS x-connect, which resolves through another + # x-connect + # + route_34_neos = VppMplsRoute(self, 34, 0, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_via_label=32, + labels=[VppMplsLabel(44), + VppMplsLabel(46)])]) + route_34_neos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(34, ttl=45), + VppMplsLabel(99)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + # it's the 2nd (counting from 0) label in the stack that is swapped + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(33), + VppMplsLabel(44), + VppMplsLabel(46, ttl=44), + VppMplsLabel(99)]) + + # + # an recursive IP route that resolves through the recursive non-eos + # x-connect + # + ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_via_label=34, + labels=[VppMplsLabel(55)])]) + ip_10_0_0_1.add_vpp_config() + + tx = self.create_stream_ip4(self.pg0, "10.0.0.1") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(33), + VppMplsLabel(44), + VppMplsLabel(46), + VppMplsLabel(55)]) + self.assertEqual(ip_10_0_0_1.get_stats_to()['packets'], 257) + + ip_10_0_0_1.remove_vpp_config() + route_34_neos.remove_vpp_config() + route_34_eos.remove_vpp_config() + route_33_neos.remove_vpp_config() + route_33_eos.remove_vpp_config() + route_32_neos.remove_vpp_config() + route_32_eos.remove_vpp_config() + + def test_bind(self): + """ MPLS Local Label Binding test """ + + # + # Add a non-recursive route with a single out label + # + route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(45)])]) + route_10_0_0_1.add_vpp_config() + + # bind a local label to the route + binding = VppMplsIpBind(self, 44, "10.0.0.1", 32) + binding.add_vpp_config() + + # non-EOS stream + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(44), + VppMplsLabel(99)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(45, ttl=63), + VppMplsLabel(99)]) + + # EOS stream + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(44)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled(self.pg0, rx, tx, + [VppMplsLabel(45, ttl=63)]) + + # IP stream + tx = self.create_stream_ip4(self.pg0, "10.0.0.1") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, [VppMplsLabel(45)]) + + # + # cleanup + # + binding.remove_vpp_config() + route_10_0_0_1.remove_vpp_config() + + def test_imposition(self): + """ MPLS label imposition test """ + + # + # Add a non-recursive route with a single out label + # + route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(32)])]) + route_10_0_0_1.add_vpp_config() + + # + # a stream that matches the route for 10.0.0.1 # PG0 is in the default table # + tx = self.create_stream_ip4(self.pg0, "10.0.0.1") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, [VppMplsLabel(32)]) + + # + # Add a non-recursive route with a 3 out labels + # + route_10_0_0_2 = VppIpRoute(self, "10.0.0.2", 32, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(32), + VppMplsLabel(33), + VppMplsLabel(34)])]) + route_10_0_0_2.add_vpp_config() + + tx = self.create_stream_ip4(self.pg0, "10.0.0.2", + ip_ttl=44, ip_dscp=0xff) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(32), + VppMplsLabel(33), + VppMplsLabel(34)], + ip_ttl=43) + + # + # Add a non-recursive route with a single out label in uniform mode + # + route_10_0_0_3 = VppIpRoute( + self, "10.0.0.3", 32, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(32, + mode=MplsLspMode.UNIFORM)])]) + route_10_0_0_3.add_vpp_config() + + tx = self.create_stream_ip4(self.pg0, "10.0.0.3", + ip_ttl=54, ip_dscp=0xbe) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(32, ttl=53, exp=5)]) + + # + # Add a IPv6 non-recursive route with a single out label in + # uniform mode + # + route_2001_3 = VppIpRoute( + self, "2001::3", 128, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index, + proto=DpoProto.DPO_PROTO_IP6, + labels=[VppMplsLabel(32, + mode=MplsLspMode.UNIFORM)])], + is_ip6=1) + route_2001_3.add_vpp_config() + + tx = self.create_stream_ip6(self.pg0, "2001::3", + ip_ttl=54, ip_dscp=0xbe) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip6(self.pg0, rx, tx, + [VppMplsLabel(32, ttl=53, exp=5)]) + + # + # add a recursive path, with output label, via the 1 label route + # + route_11_0_0_1 = VppIpRoute(self, "11.0.0.1", 32, + [VppRoutePath("10.0.0.1", + 0xffffffff, + labels=[VppMplsLabel(44)])]) + route_11_0_0_1.add_vpp_config() + + # + # a stream that matches the route for 11.0.0.1, should pick up + # the label stack for 11.0.0.1 and 10.0.0.1 + # + tx = self.create_stream_ip4(self.pg0, "11.0.0.1") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(32), + VppMplsLabel(44)]) + + self.assertEqual(route_11_0_0_1.get_stats_to()['packets'], 257) + + # + # add a recursive path, with 2 labels, via the 3 label route + # + route_11_0_0_2 = VppIpRoute(self, "11.0.0.2", 32, + [VppRoutePath("10.0.0.2", + 0xffffffff, + labels=[VppMplsLabel(44), + VppMplsLabel(45)])]) + route_11_0_0_2.add_vpp_config() + + # + # a stream that matches the route for 11.0.0.1, should pick up + # the label stack for 11.0.0.1 and 10.0.0.1 + # + tx = self.create_stream_ip4(self.pg0, "11.0.0.2") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(32), + VppMplsLabel(33), + VppMplsLabel(34), + VppMplsLabel(44), + VppMplsLabel(45)]) + + self.assertEqual(route_11_0_0_2.get_stats_to()['packets'], 257) + + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_labelled_ip4(self.pg0, rx, tx, + [VppMplsLabel(32), + VppMplsLabel(33), + VppMplsLabel(34), + VppMplsLabel(44), + VppMplsLabel(45)]) + + self.assertEqual(route_11_0_0_2.get_stats_to()['packets'], 514) + + # + # cleanup + # + route_11_0_0_2.remove_vpp_config() + route_11_0_0_1.remove_vpp_config() + route_10_0_0_2.remove_vpp_config() + route_10_0_0_1.remove_vpp_config() + + def test_tunnel_pipe(self): + """ MPLS Tunnel Tests - Pipe """ + + # + # Create a tunnel with a single out label + # + mpls_tun = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(44), + VppMplsLabel(46)])]) + mpls_tun.add_vpp_config() + mpls_tun.admin_up() + + # + # add an unlabelled route through the new tunnel + # + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath("0.0.0.0", + mpls_tun._sw_if_index)]) + route_10_0_0_3.add_vpp_config() + self.vapi.cli("clear trace") - tx = self.create_stream_ip6(self.pg0, 2, 2) + tx = self.create_stream_ip4(self.pg0, "10.0.0.3") self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture() - self.verify_capture_ip6(self.pg0, rx, tx) + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, + [VppMplsLabel(44), + VppMplsLabel(46)]) # - # a stream with a non-zero MPLS TTL - # PG1 is in table 1 - # we are ensuring the post-pop lookup occurs in the VRF table + # add a labelled route through the new tunnel # + route_10_0_0_4 = VppIpRoute(self, "10.0.0.4", 32, + [VppRoutePath("0.0.0.0", + mpls_tun._sw_if_index, + labels=[33])]) + route_10_0_0_4.add_vpp_config() + self.vapi.cli("clear trace") - tx = self.create_stream_ip6(self.pg1, 2, 2) - self.pg1.add_stream(tx) + tx = self.create_stream_ip4(self.pg0, "10.0.0.4") + self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() - rx = self.pg1.get_capture() - self.verify_capture_ip6(self.pg0, rx, tx) + rx = self.pg0.get_capture() + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, + [VppMplsLabel(44), + VppMplsLabel(46), + VppMplsLabel(33, ttl=255)]) + def test_tunnel_uniform(self): + """ MPLS Tunnel Tests - Uniform """ + + # + # Create a tunnel with a single out label + # The label stack is specified here from outer to inner + # + mpls_tun = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(44, ttl=32), + VppMplsLabel(46, MplsLspMode.UNIFORM)])]) + mpls_tun.add_vpp_config() + mpls_tun.admin_up() + + # + # add an unlabelled route through the new tunnel + # + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath("0.0.0.0", + mpls_tun._sw_if_index)]) + route_10_0_0_3.add_vpp_config() + + self.vapi.cli("clear trace") + tx = self.create_stream_ip4(self.pg0, "10.0.0.3", ip_ttl=24) + self.pg0.add_stream(tx) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture() + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, + [VppMplsLabel(44, ttl=32), + VppMplsLabel(46, ttl=23)]) + + # + # add a labelled route through the new tunnel + # + route_10_0_0_4 = VppIpRoute( + self, "10.0.0.4", 32, + [VppRoutePath("0.0.0.0", + mpls_tun._sw_if_index, + labels=[VppMplsLabel(33, ttl=47)])]) + route_10_0_0_4.add_vpp_config() + + self.vapi.cli("clear trace") + tx = self.create_stream_ip4(self.pg0, "10.0.0.4") + self.pg0.add_stream(tx) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture() + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, + [VppMplsLabel(44, ttl=32), + VppMplsLabel(46, ttl=47), + VppMplsLabel(33, ttl=47)]) + + def test_mpls_tunnel_many(self): + """ Multiple Tunnels """ + + for ii in range(10): + mpls_tun = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(44, ttl=32), + VppMplsLabel(46, MplsLspMode.UNIFORM)])]) + mpls_tun.add_vpp_config() + mpls_tun.admin_up() + + def test_v4_exp_null(self): + """ MPLS V4 Explicit NULL test """ + + # + # The first test case has an MPLS TTL of 0 + # all packet should be dropped + # + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(0, ttl=0)]) + self.send_and_assert_no_replies(self.pg0, tx, + "MPLS TTL=0 packets forwarded") + + # + # a stream with a non-zero MPLS TTL + # PG0 is in the default table + # + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(0)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip4(self.pg0, rx, tx) + + # + # a stream with a non-zero MPLS TTL + # PG1 is in table 1 + # we are ensuring the post-pop lookup occurs in the VRF table + # + tx = self.create_stream_labelled_ip4(self.pg1, [VppMplsLabel(0)]) + rx = self.send_and_expect(self.pg1, tx, self.pg1) + self.verify_capture_ip4(self.pg1, rx, tx) + + def test_v6_exp_null(self): + """ MPLS V6 Explicit NULL test """ + + # + # a stream with a non-zero MPLS TTL + # PG0 is in the default table + # + tx = self.create_stream_labelled_ip6(self.pg0, [VppMplsLabel(2)]) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6(self.pg0, rx, tx) + + # + # a stream with a non-zero MPLS TTL + # PG1 is in table 1 + # we are ensuring the post-pop lookup occurs in the VRF table + # + tx = self.create_stream_labelled_ip6(self.pg1, [VppMplsLabel(2)]) + rx = self.send_and_expect(self.pg1, tx, self.pg1) + self.verify_capture_ip6(self.pg0, rx, tx) + + def test_deag(self): + """ MPLS Deagg """ + + # + # A de-agg route - next-hop lookup in default table + # + route_34_eos = VppMplsRoute(self, 34, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=0)]) + route_34_eos.add_vpp_config() + + # + # ping an interface in the default table + # PG0 is in the default table + # + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(34)], + ping=1, + ip_itf=self.pg0) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip4(self.pg0, rx, tx, ping_resp=1) + + # + # A de-agg route - next-hop lookup in non-default table + # + route_35_eos = VppMplsRoute(self, 35, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=1)]) + route_35_eos.add_vpp_config() + + # + # ping an interface in the non-default table + # PG0 is in the default table. packet arrive labelled in the + # default table and egress unlabelled in the non-default + # + tx = self.create_stream_labelled_ip4( + self.pg0, [VppMplsLabel(35)], ping=1, ip_itf=self.pg1) + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_capture_ip4(self.pg1, rx, tx, ping_resp=1) + + # + # Double pop + # + route_36_neos = VppMplsRoute(self, 36, 0, + [VppRoutePath("0.0.0.0", + 0xffffffff)]) + route_36_neos.add_vpp_config() + + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(36), + VppMplsLabel(35)], + ping=1, ip_itf=self.pg1) + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_capture_ip4(self.pg1, rx, tx, ping_resp=1) + + route_36_neos.remove_vpp_config() + route_35_eos.remove_vpp_config() + route_34_eos.remove_vpp_config() + + def test_interface_rx(self): + """ MPLS Interface Receive """ + + # + # Add a non-recursive route that will forward the traffic + # post-interface-rx + # + route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + table_id=1, + paths=[VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + route_10_0_0_1.add_vpp_config() + + # + # An interface receive label that maps traffic to RX on interface + # pg1 + # by injecting the packet in on pg0, which is in table 0 + # doing an interface-rx on pg1 and matching a route in table 1 + # if the packet egresses, then we must have swapped to pg1 + # so as to have matched the route in table 1 + # + route_34_eos = VppMplsRoute(self, 34, 1, + [VppRoutePath("0.0.0.0", + self.pg1.sw_if_index, + is_interface_rx=1)]) + route_34_eos.add_vpp_config() + + # + # ping an interface in the default table + # PG0 is in the default table + # + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(34)], + dst_ip="10.0.0.1") + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_capture_ip4(self.pg1, rx, tx) + + def test_mcast_mid_point(self): + """ MPLS Multicast Mid Point """ + + # + # Add a non-recursive route that will forward the traffic + # post-interface-rx + # + route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + table_id=1, + paths=[VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + route_10_0_0_1.add_vpp_config() + + # + # Add a mcast entry that replicate to pg2 and pg3 + # and replicate to a interface-rx (like a bud node would) + # + route_3400_eos = VppMplsRoute( + self, 3400, 1, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index, + labels=[VppMplsLabel(3401)]), + VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index, + labels=[VppMplsLabel(3402)]), + VppRoutePath("0.0.0.0", + self.pg1.sw_if_index, + is_interface_rx=1)], + is_multicast=1) + route_3400_eos.add_vpp_config() + + # + # ping an interface in the default table + # PG0 is in the default table + # + self.vapi.cli("clear trace") + tx = self.create_stream_labelled_ip4(self.pg0, + [VppMplsLabel(3400, ttl=64)], + n=257, + dst_ip="10.0.0.1") + self.pg0.add_stream(tx) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(257) + self.verify_capture_ip4(self.pg1, rx, tx) + + rx = self.pg2.get_capture(257) + self.verify_capture_labelled(self.pg2, rx, tx, + [VppMplsLabel(3401, ttl=63)]) + rx = self.pg3.get_capture(257) + self.verify_capture_labelled(self.pg3, rx, tx, + [VppMplsLabel(3402, ttl=63)]) + + def test_mcast_head(self): + """ MPLS Multicast Head-end """ + + # + # Create a multicast tunnel with two replications + # + mpls_tun = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index, + labels=[VppMplsLabel(42)]), + VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index, + labels=[VppMplsLabel(43)])], + is_multicast=1) + mpls_tun.add_vpp_config() + mpls_tun.admin_up() + + # + # add an unlabelled route through the new tunnel + # + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath("0.0.0.0", + mpls_tun._sw_if_index)]) + route_10_0_0_3.add_vpp_config() + + self.vapi.cli("clear trace") + tx = self.create_stream_ip4(self.pg0, "10.0.0.3") + self.pg0.add_stream(tx) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg2.get_capture(257) + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [VppMplsLabel(42)]) + rx = self.pg3.get_capture(257) + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [VppMplsLabel(43)]) + + # + # An an IP multicast route via the tunnel + # A (*,G). + # one accepting interface, pg0, 1 forwarding interface via the tunnel + # + route_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, + [VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT), + VppMRoutePath(mpls_tun._sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)]) + route_232_1_1_1.add_vpp_config() + + self.vapi.cli("clear trace") + tx = self.create_stream_ip4(self.pg0, "232.1.1.1") + self.pg0.add_stream(tx) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg2.get_capture(257) + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [VppMplsLabel(42)]) + rx = self.pg3.get_capture(257) + self.verify_capture_tunneled_ip4(self.pg0, rx, tx, [VppMplsLabel(43)]) + + def test_mcast_ip4_tail(self): + """ MPLS IPv4 Multicast Tail """ + + # + # Add a multicast route that will forward the traffic + # post-disposition + # + route_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, + table_id=1, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)]) + route_232_1_1_1.add_vpp_config() + + # + # An interface receive label that maps traffic to RX on interface + # pg1 + # by injecting the packet in on pg0, which is in table 0 + # doing an rpf-id and matching a route in table 1 + # if the packet egresses, then we must have matched the route in + # table 1 + # + route_34_eos = VppMplsRoute(self, 34, 1, + [VppRoutePath("0.0.0.0", + self.pg1.sw_if_index, + nh_table_id=1, + rpf_id=55)], + is_multicast=1) + + route_34_eos.add_vpp_config() + + # + # Drop due to interface lookup miss + # + self.vapi.cli("clear trace") + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(34)], + dst_ip="232.1.1.1", n=1) + self.send_and_assert_no_replies(self.pg0, tx, "RPF-ID drop none") + + # + # set the RPF-ID of the enrtry to match the input packet's + # + route_232_1_1_1.update_rpf_id(55) + + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(34)], + dst_ip="232.1.1.1") + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_capture_ip4(self.pg1, rx, tx) + + # + # disposed packets have an invalid IPv4 checkusm + # + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(34)], + dst_ip="232.1.1.1", n=65, + chksum=1) + self.send_and_assert_no_replies(self.pg0, tx, "Invalid Checksum") + + # + # set the RPF-ID of the entry to not match the input packet's + # + route_232_1_1_1.update_rpf_id(56) + tx = self.create_stream_labelled_ip4(self.pg0, [VppMplsLabel(34)], + dst_ip="232.1.1.1") + self.send_and_assert_no_replies(self.pg0, tx, "RPF-ID drop 56") + + def test_mcast_ip6_tail(self): + """ MPLS IPv6 Multicast Tail """ + + # + # Add a multicast route that will forward the traffic + # post-disposition + # + route_ff = VppIpMRoute( + self, + "::", + "ff01::1", 32, + MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, + table_id=1, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)], + is_ip6=1) + route_ff.add_vpp_config() + + # + # An interface receive label that maps traffic to RX on interface + # pg1 + # by injecting the packet in on pg0, which is in table 0 + # doing an rpf-id and matching a route in table 1 + # if the packet egresses, then we must have matched the route in + # table 1 + # + route_34_eos = VppMplsRoute( + self, 34, 1, + [VppRoutePath("::", + self.pg1.sw_if_index, + nh_table_id=1, + rpf_id=55, + proto=DpoProto.DPO_PROTO_IP6)], + is_multicast=1) + + route_34_eos.add_vpp_config() + + # + # Drop due to interface lookup miss + # + tx = self.create_stream_labelled_ip6(self.pg0, [VppMplsLabel(34)], + dst_ip="ff01::1") + self.send_and_assert_no_replies(self.pg0, tx, "RPF Miss") + + # + # set the RPF-ID of the enrtry to match the input packet's + # + route_ff.update_rpf_id(55) + + tx = self.create_stream_labelled_ip6(self.pg0, [VppMplsLabel(34)], + dst_ip="ff01::1") + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_capture_ip6(self.pg1, rx, tx) + + # + # disposed packets have hop-limit = 1 + # + tx = self.create_stream_labelled_ip6(self.pg0, + [VppMplsLabel(34)], + dst_ip="ff01::1", + hlim=1) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_capture_ip6_icmp(self.pg0, rx, tx) + + # + # set the RPF-ID of the enrtry to not match the input packet's + # + route_ff.update_rpf_id(56) + tx = self.create_stream_labelled_ip6(self.pg0, + [VppMplsLabel(34)], + dst_ip="ff01::1") + self.send_and_assert_no_replies(self.pg0, tx, "RPF-ID drop 56") + + +class TestMPLSDisabled(VppTestCase): + """ MPLS disabled """ + + def setUp(self): + super(TestMPLSDisabled, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(2)) + + self.tbl = VppMplsTable(self, 0) + self.tbl.add_vpp_config() + + # PG0 is MPLS enalbed + self.pg0.admin_up() + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg0.enable_mpls() + + # PG 1 is not MPLS enabled + self.pg1.admin_up() + + def tearDown(self): + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + self.pg0.disable_mpls() + super(TestMPLSDisabled, self).tearDown() + + def test_mpls_disabled(self): + """ MPLS Disabled """ + + tx = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + MPLS(label=32, ttl=64) / + IPv6(src="2001::1", dst=self.pg0.remote_ip6) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + # + # A simple MPLS xconnect - eos label in label out + # + route_32_eos = VppMplsRoute(self, 32, 1, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[33])]) + route_32_eos.add_vpp_config() + + # + # PG1 does not forward IP traffic + # + self.send_and_assert_no_replies(self.pg1, tx, "MPLS disabled") + + # + # MPLS enable PG1 + # + self.pg1.enable_mpls() + + # + # Now we get packets through + # + self.pg1.add_stream(tx) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + + # + # Disable PG1 + # + self.pg1.disable_mpls() + + # + # PG1 does not forward IP traffic + # + self.send_and_assert_no_replies(self.pg1, tx, "IPv6 disabled") + self.send_and_assert_no_replies(self.pg1, tx, "IPv6 disabled") + + +class TestMPLSPIC(VppTestCase): + """ MPLS PIC edge convergence """ + + def setUp(self): + super(TestMPLSPIC, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(4)) + + mpls_tbl = VppMplsTable(self, 0) + mpls_tbl.add_vpp_config() + tbl4 = VppIpTable(self, 1) + tbl4.add_vpp_config() + tbl6 = VppIpTable(self, 1, is_ip6=1) + tbl6.add_vpp_config() + + # core links + self.pg0.admin_up() + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg0.enable_mpls() + self.pg1.admin_up() + self.pg1.config_ip4() + self.pg1.resolve_arp() + self.pg1.enable_mpls() + + # VRF (customer facing) link + self.pg2.admin_up() + self.pg2.set_table_ip4(1) + self.pg2.config_ip4() + self.pg2.resolve_arp() + self.pg2.set_table_ip6(1) + self.pg2.config_ip6() + self.pg2.resolve_ndp() + self.pg3.admin_up() + self.pg3.set_table_ip4(1) + self.pg3.config_ip4() + self.pg3.resolve_arp() + self.pg3.set_table_ip6(1) + self.pg3.config_ip6() + self.pg3.resolve_ndp() + + def tearDown(self): + self.pg0.disable_mpls() + self.pg1.disable_mpls() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.unconfig_ip6() + i.set_table_ip4(0) + i.set_table_ip6(0) + i.admin_down() + super(TestMPLSPIC, self).tearDown() + + def test_mpls_ibgp_pic(self): + """ MPLS iBGP PIC edge convergence + + 1) setup many iBGP VPN routes via a pair of iBGP peers. + 2) Check EMCP forwarding to these peers + 3) withdraw the IGP route to one of these peers. + 4) check forwarding continues to the remaining peer + """ + + # + # IGP+LDP core routes + # + core_10_0_0_45 = VppIpRoute(self, "10.0.0.45", 32, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[45])]) + core_10_0_0_45.add_vpp_config() + + core_10_0_0_46 = VppIpRoute(self, "10.0.0.46", 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[46])]) + core_10_0_0_46.add_vpp_config() + + # + # Lot's of VPN routes. We need more the 64 so VPP will build + # the fast convergence indirection + # + vpn_routes = [] + pkts = [] + for ii in range(64): + dst = "192.168.1.%d" % ii + vpn_routes.append(VppIpRoute(self, dst, 32, + [VppRoutePath("10.0.0.45", + 0xffffffff, + labels=[145], + is_resolve_host=1), + VppRoutePath("10.0.0.46", + 0xffffffff, + labels=[146], + is_resolve_host=1)], + table_id=1)) + vpn_routes[ii].add_vpp_config() + + pkts.append(Ether(dst=self.pg2.local_mac, + src=self.pg2.remote_mac) / + IP(src=self.pg2.remote_ip4, dst=dst) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + # + # Send the packet stream (one pkt to each VPN route) + # - expect a 50-50 split of the traffic + # + self.pg2.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg0._get_capture(1) + rx1 = self.pg1._get_capture(1) + + # not testig the LB hashing algorithm so we're not concerned + # with the split ratio, just as long as neither is 0 + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + # + # use a test CLI command to stop the FIB walk process, this + # will prevent the FIB converging the VPN routes and thus allow + # us to probe the interim (psot-fail, pre-converge) state + # + self.vapi.ppcli("test fib-walk-process disable") + + # + # Withdraw one of the IGP routes + # + core_10_0_0_46.remove_vpp_config() + + # + # now all packets should be forwarded through the remaining peer + # + self.vapi.ppcli("clear trace") + self.pg2.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg0.get_capture(len(pkts)) + + # + # enable the FIB walk process to converge the FIB + # + self.vapi.ppcli("test fib-walk-process enable") + + # + # packets should still be forwarded through the remaining peer + # + self.pg2.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg0.get_capture(64) + + # + # Add the IGP route back and we return to load-balancing + # + core_10_0_0_46.add_vpp_config() + + self.pg2.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg0._get_capture(1) + rx1 = self.pg1._get_capture(1) + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + def test_mpls_ebgp_pic(self): + """ MPLS eBGP PIC edge convergence + + 1) setup many eBGP VPN routes via a pair of eBGP peers + 2) Check EMCP forwarding to these peers + 3) withdraw one eBGP path - expect LB across remaining eBGP + """ + + # + # Lot's of VPN routes. We need more the 64 so VPP will build + # the fast convergence indirection + # + vpn_routes = [] + vpn_bindings = [] + pkts = [] + for ii in range(64): + dst = "192.168.1.%d" % ii + local_label = 1600 + ii + vpn_routes.append(VppIpRoute(self, dst, 32, + [VppRoutePath(self.pg2.remote_ip4, + 0xffffffff, + nh_table_id=1, + is_resolve_attached=1), + VppRoutePath(self.pg3.remote_ip4, + 0xffffffff, + nh_table_id=1, + is_resolve_attached=1)], + table_id=1)) + vpn_routes[ii].add_vpp_config() + + vpn_bindings.append(VppMplsIpBind(self, local_label, dst, 32, + ip_table_id=1)) + vpn_bindings[ii].add_vpp_config() + + pkts.append(Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + MPLS(label=local_label, ttl=64) / + IP(src=self.pg0.remote_ip4, dst=dst) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg2._get_capture(1) + rx1 = self.pg3._get_capture(1) + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + # + # use a test CLI command to stop the FIB walk process, this + # will prevent the FIB converging the VPN routes and thus allow + # us to probe the interim (psot-fail, pre-converge) state + # + self.vapi.ppcli("test fib-walk-process disable") + + # + # withdraw the connected prefix on the interface. + # + self.pg2.unconfig_ip4() + + # + # now all packets should be forwarded through the remaining peer + # + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg3.get_capture(len(pkts)) + + # + # enable the FIB walk process to converge the FIB + # + self.vapi.ppcli("test fib-walk-process enable") + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg3.get_capture(len(pkts)) + + # + # put the connecteds back + # + self.pg2.config_ip4() + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg2._get_capture(1) + rx1 = self.pg3._get_capture(1) + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + def test_mpls_v6_ebgp_pic(self): + """ MPLSv6 eBGP PIC edge convergence + + 1) setup many eBGP VPNv6 routes via a pair of eBGP peers + 2) Check EMCP forwarding to these peers + 3) withdraw one eBGP path - expect LB across remaining eBGP + """ + + # + # Lot's of VPN routes. We need more the 64 so VPP will build + # the fast convergence indirection + # + vpn_routes = [] + vpn_bindings = [] + pkts = [] + for ii in range(64): + dst = "3000::%d" % ii + local_label = 1600 + ii + vpn_routes.append(VppIpRoute( + self, dst, 128, + [VppRoutePath(self.pg2.remote_ip6, + 0xffffffff, + nh_table_id=1, + is_resolve_attached=1, + proto=DpoProto.DPO_PROTO_IP6), + VppRoutePath(self.pg3.remote_ip6, + 0xffffffff, + nh_table_id=1, + proto=DpoProto.DPO_PROTO_IP6, + is_resolve_attached=1)], + table_id=1, + is_ip6=1)) + vpn_routes[ii].add_vpp_config() + + vpn_bindings.append(VppMplsIpBind(self, local_label, dst, 128, + ip_table_id=1, + is_ip6=1)) + vpn_bindings[ii].add_vpp_config() + + pkts.append(Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + MPLS(label=local_label, ttl=64) / + IPv6(src=self.pg0.remote_ip6, dst=dst) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg2._get_capture(1) + rx1 = self.pg3._get_capture(1) + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + # + # use a test CLI command to stop the FIB walk process, this + # will prevent the FIB converging the VPN routes and thus allow + # us to probe the interim (psot-fail, pre-converge) state + # + self.vapi.ppcli("test fib-walk-process disable") + + # + # withdraw the connected prefix on the interface. + # and shutdown the interface so the ND cache is flushed. + # + self.pg2.unconfig_ip6() + self.pg2.admin_down() + + # + # now all packets should be forwarded through the remaining peer + # + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg3.get_capture(len(pkts)) + + # + # enable the FIB walk process to converge the FIB + # + self.vapi.ppcli("test fib-walk-process enable") + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg3.get_capture(len(pkts)) + + # + # put the connecteds back + # + self.pg2.admin_up() + self.pg2.config_ip6() + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg2._get_capture(1) + rx1 = self.pg3._get_capture(1) + self.assertNotEqual(0, len(rx0)) + self.assertNotEqual(0, len(rx1)) + + +class TestMPLSL2(VppTestCase): + """ MPLS-L2 """ + + def setUp(self): + super(TestMPLSL2, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(2)) + + # create the default MPLS table + self.tables = [] + tbl = VppMplsTable(self, 0) + tbl.add_vpp_config() + self.tables.append(tbl) + + # use pg0 as the core facing interface + self.pg0.admin_up() + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg0.enable_mpls() + + # use the other 2 for customer facing L2 links + for i in self.pg_interfaces[1:]: + i.admin_up() + + def tearDown(self): + for i in self.pg_interfaces[1:]: + i.admin_down() + + self.pg0.disable_mpls() + self.pg0.unconfig_ip4() + self.pg0.admin_down() + super(TestMPLSL2, self).tearDown() + + def verify_capture_tunneled_ethernet(self, capture, sent, mpls_labels): + capture = verify_filter(capture, sent) + + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + tx = sent[i] + rx = capture[i] + + # the MPLS TTL is 255 since it enters a new tunnel + verify_mpls_stack(self, rx, mpls_labels) + + tx_eth = tx[Ether] + rx_eth = Ether(str(rx[MPLS].payload)) + + self.assertEqual(rx_eth.src, tx_eth.src) + self.assertEqual(rx_eth.dst, tx_eth.dst) + + def test_vpws(self): + """ Virtual Private Wire Service """ + + # + # Create an MPLS tunnel that pushes 1 label + # For Ethernet over MPLS the uniform mode is irrelevant since ttl/cos + # information is not in the packet, but we test it works anyway + # + mpls_tun_1 = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(42, MplsLspMode.UNIFORM)])], + is_l2=1) + mpls_tun_1.add_vpp_config() + mpls_tun_1.admin_up() + + # + # Create a label entry to for 55 that does L2 input to the tunnel + # + route_55_eos = VppMplsRoute( + self, 55, 1, + [VppRoutePath("0.0.0.0", + mpls_tun_1.sw_if_index, + is_interface_rx=1, + proto=DpoProto.DPO_PROTO_ETHERNET)]) + route_55_eos.add_vpp_config() + + # + # Cross-connect the tunnel with one of the customers L2 interfaces + # + self.vapi.sw_interface_set_l2_xconnect(self.pg1.sw_if_index, + mpls_tun_1.sw_if_index, + enable=1) + self.vapi.sw_interface_set_l2_xconnect(mpls_tun_1.sw_if_index, + self.pg1.sw_if_index, + enable=1) + + # + # inject a packet from the core + # + pcore = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + MPLS(label=55, ttl=64) / + Ether(dst="00:00:de:ad:ba:be", + src="00:00:de:ad:be:ef") / + IP(src="10.10.10.10", dst="11.11.11.11") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + tx0 = pcore * 65 + rx0 = self.send_and_expect(self.pg0, tx0, self.pg1) + payload = pcore[MPLS].payload + + self.assertEqual(rx0[0][Ether].dst, payload[Ether].dst) + self.assertEqual(rx0[0][Ether].src, payload[Ether].src) + + # + # Inject a packet from the custoer/L2 side + # + tx1 = pcore[MPLS].payload * 65 + rx1 = self.send_and_expect(self.pg1, tx1, self.pg0) + + self.verify_capture_tunneled_ethernet(rx1, tx1, [VppMplsLabel(42)]) + + def test_vpls(self): + """ Virtual Private LAN Service """ + # + # Create an L2 MPLS tunnel + # + mpls_tun = VppMPLSTunnelInterface( + self, + [VppRoutePath(self.pg0.remote_ip4, + self.pg0.sw_if_index, + labels=[VppMplsLabel(42)])], + is_l2=1) + mpls_tun.add_vpp_config() + mpls_tun.admin_up() + + # + # Create a label entry to for 55 that does L2 input to the tunnel + # + route_55_eos = VppMplsRoute( + self, 55, 1, + [VppRoutePath("0.0.0.0", + mpls_tun.sw_if_index, + is_interface_rx=1, + proto=DpoProto.DPO_PROTO_ETHERNET)]) + route_55_eos.add_vpp_config() + + # + # add to tunnel to the customers bridge-domain + # + self.vapi.sw_interface_set_l2_bridge(mpls_tun.sw_if_index, + bd_id=1) + self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, + bd_id=1) + + # + # Packet from the customer interface and from the core + # + p_cust = (Ether(dst="00:00:de:ad:ba:be", + src="00:00:de:ad:be:ef") / + IP(src="10.10.10.10", dst="11.11.11.11") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + p_core = (Ether(src="00:00:de:ad:ba:be", + dst="00:00:de:ad:be:ef") / + IP(dst="10.10.10.10", src="11.11.11.11") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)) + + # + # The BD is learning, so send in one of each packet to learn + # + p_core_encap = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + MPLS(label=55, ttl=64) / + p_core) + + self.pg1.add_stream(p_cust) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.pg0.add_stream(p_core_encap) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # we've learnt this so expect it be be forwarded + rx0 = self.pg1.get_capture(1) + + self.assertEqual(rx0[0][Ether].dst, p_core[Ether].dst) + self.assertEqual(rx0[0][Ether].src, p_core[Ether].src) + + # + # now a stream in each direction + # + self.pg1.add_stream(p_cust * 65) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx0 = self.pg0.get_capture(65) + + self.verify_capture_tunneled_ethernet(rx0, p_cust*65, + [VppMplsLabel(42)]) + + # + # remove interfaces from customers bridge-domain + # + self.vapi.sw_interface_set_l2_bridge(mpls_tun.sw_if_index, + bd_id=1, + enable=0) + self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, + bd_id=1, + enable=0) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)