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Diffstat (limited to 'src/vnet/bier/test/test_bier.py')
| -rw-r--r-- | src/vnet/bier/test/test_bier.py | 862 |
1 files changed, 862 insertions, 0 deletions
diff --git a/src/vnet/bier/test/test_bier.py b/src/vnet/bier/test/test_bier.py new file mode 100644 index 00000000000..2f649bbde53 --- /dev/null +++ b/src/vnet/bier/test/test_bier.py @@ -0,0 +1,862 @@ +#!/usr/bin/env python3 + +import unittest + +from framework import VppTestCase, VppTestRunner, running_extended_tests +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath, \ + VppMplsTable, VppIpMRoute, VppMRoutePath, VppIpTable, \ + MPLS_LABEL_INVALID, \ + VppMplsLabel, FibPathProto, FibPathType +from vpp_bier import BIER_HDR_PAYLOAD, VppBierImp, VppBierDispEntry, \ + VppBierDispTable, VppBierTable, VppBierTableID, VppBierRoute +from vpp_udp_encap import VppUdpEncap +from vpp_papi import VppEnum + +import scapy.compat +from scapy.packet import Raw +from scapy.layers.l2 import Ether +from scapy.layers.inet import IP, UDP +from scapy.layers.inet6 import IPv6 +from scapy.contrib.mpls import MPLS +from scapy.contrib.bier import BIER, BIERLength, BIFT + +NUM_PKTS = 67 + + +class TestBFIB(VppTestCase): + """ BIER FIB Test Case """ + + def test_bfib(self): + """ BFIB Unit Tests """ + error = self.vapi.cli("test bier") + + if error: + self.logger.critical(error) + self.assertNotIn("Failed", error) + + +class TestBier(VppTestCase): + """ BIER Test Case """ + + def setUp(self): + super(TestBier, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(3)) + + # create the default MPLS table + self.tables = [] + tbl = VppMplsTable(self, 0) + tbl.add_vpp_config() + self.tables.append(tbl) + + tbl = VppIpTable(self, 10) + tbl.add_vpp_config() + self.tables.append(tbl) + + # setup both interfaces + for i in self.pg_interfaces: + if i == self.pg2: + i.set_table_ip4(10) + i.admin_up() + i.config_ip4() + i.resolve_arp() + i.enable_mpls() + + def tearDown(self): + for i in self.pg_interfaces: + i.disable_mpls() + i.unconfig_ip4() + i.set_table_ip4(0) + i.admin_down() + super(TestBier, self).tearDown() + + def bier_midpoint(self, hdr_len_id, n_bytes, max_bp): + """BIER midpoint""" + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(0, 0, hdr_len_id) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + # + # A packet with no bits set gets dropped + # + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=hdr_len_id) / + IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) / + UDP(sport=1234, dport=1234) / + Raw()) + pkts = [p] + + self.send_and_assert_no_replies(self.pg0, pkts, + "Empty Bit-String") + + # + # Add a BIER route for each bit-position in the table via a different + # next-hop. Testing whether the BIER walk and replicate forwarding + # function works for all bit posisitons. + # + nh_routes = [] + bier_routes = [] + for i in range(1, max_bp+1): + nh = "10.0.%d.%d" % (i / 255, i % 255) + nh_routes.append( + VppIpRoute(self, nh, 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[VppMplsLabel(2000+i)])])) + nh_routes[-1].add_vpp_config() + + bier_routes.append( + VppBierRoute(self, bti, i, + [VppRoutePath(nh, 0xffffffff, + labels=[VppMplsLabel(100+i)])])) + bier_routes[-1].add_vpp_config() + + # + # A packet with all bits set gets replicated once for each bit + # + pkt_sizes = [64, 1400] + + for pkt_size in pkt_sizes: + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=hdr_len_id, + BitString=scapy.compat.chb(255)*n_bytes) / + IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) / + UDP(sport=1234, dport=1234) / + Raw(scapy.compat.chb(5) * pkt_size)) + pkts = p + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(max_bp) + + for rxp in rx: + # + # The packets are not required to be sent in bit-position order + # when we setup the routes above we used the bit-position to + # construct the out-label. so use that here to determine the BP + # + olabel = rxp[MPLS] + bp = olabel.label - 2000 + + blabel = olabel[MPLS].payload + self.assertEqual(blabel.label, 100+bp) + self.assertEqual(blabel.ttl, 254) + + bier_hdr = blabel[MPLS].payload + + self.assertEqual(bier_hdr.id, 5) + self.assertEqual(bier_hdr.version, 0) + self.assertEqual(bier_hdr.length, hdr_len_id) + self.assertEqual(bier_hdr.entropy, 0) + self.assertEqual(bier_hdr.OAM, 0) + self.assertEqual(bier_hdr.RSV, 0) + self.assertEqual(bier_hdr.DSCP, 0) + self.assertEqual(bier_hdr.Proto, 5) + + # The bit-string should consist only of the BP given by i. + byte_array = [b'\0'] * (n_bytes) + byte_val = scapy.compat.chb(1 << (bp - 1) % 8) + byte_pos = n_bytes - (((bp - 1) // 8) + 1) + byte_array[byte_pos] = byte_val + bitstring = b''.join(byte_array) + + self.assertEqual(len(bitstring), len(bier_hdr.BitString)) + self.assertEqual(bitstring, bier_hdr.BitString) + + # + # cleanup. not strictly necessary, but it's much quicker this way + # because the bier_fib_dump and ip_fib_dump will be empty when the + # auto-cleanup kicks in + # + for br in bier_routes: + br.remove_vpp_config() + for nhr in nh_routes: + nhr.remove_vpp_config() + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_midpoint_1024(self): + """BIER midpoint BSL:1024""" + self.bier_midpoint(BIERLength.BIER_LEN_1024, 128, 1024) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_midpoint_512(self): + """BIER midpoint BSL:512""" + self.bier_midpoint(BIERLength.BIER_LEN_512, 64, 512) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_midpoint_256(self): + """BIER midpoint BSL:256""" + self.bier_midpoint(BIERLength.BIER_LEN_256, 32, 256) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_midpoint_128(self): + """BIER midpoint BSL:128""" + self.bier_midpoint(BIERLength.BIER_LEN_128, 16, 128) + + def test_bier_midpoint_64(self): + """BIER midpoint BSL:64""" + self.bier_midpoint(BIERLength.BIER_LEN_64, 8, 64) + + def test_bier_load_balance(self): + """BIER load-balance""" + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_64) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + # + # packets with varying entropy + # + pkts = [] + for ii in range(257): + pkts.append((Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=BIERLength.BIER_LEN_64, + entropy=ii, + BitString=scapy.compat.chb(255)*16) / + IPv6(src=self.pg0.remote_ip6, + dst=self.pg0.remote_ip6) / + UDP(sport=1234, dport=1234) / + Raw())) + + # + # 4 next hops + # + nhs = [{'ip': "10.0.0.1", 'label': 201}, + {'ip': "10.0.0.2", 'label': 202}, + {'ip': "10.0.0.3", 'label': 203}, + {'ip': "10.0.0.4", 'label': 204}] + + for nh in nhs: + ipr = VppIpRoute( + self, nh['ip'], 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[VppMplsLabel(nh['label'])])]) + ipr.add_vpp_config() + + bier_route = VppBierRoute( + self, bti, 1, + [VppRoutePath(nhs[0]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)]), + VppRoutePath(nhs[1]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)])]) + bier_route.add_vpp_config() + + rx = self.send_and_expect(self.pg0, pkts, self.pg1) + + # + # we should have recieved a packet from each neighbor + # + for nh in nhs[:2]: + self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx)) + + # + # add the other paths + # + bier_route.update_paths( + [VppRoutePath(nhs[0]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)]), + VppRoutePath(nhs[1]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)]), + VppRoutePath(nhs[2]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)]), + VppRoutePath(nhs[3]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)])]) + + rx = self.send_and_expect(self.pg0, pkts, self.pg1) + + for nh in nhs: + self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx)) + + # + # remove first two paths + # + bier_route.remove_path(VppRoutePath(nhs[0]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)])) + bier_route.remove_path(VppRoutePath(nhs[1]['ip'], 0xffffffff, + labels=[VppMplsLabel(101)])) + + rx = self.send_and_expect(self.pg0, pkts, self.pg1) + for nh in nhs[2:]: + self.assertTrue(sum(p[MPLS].label == nh['label'] for p in rx)) + + # + # remove the last of the paths, deleteing the entry + # + bier_route.remove_all_paths() + + self.send_and_assert_no_replies(self.pg0, pkts) + + def test_bier_head(self): + """BIER head""" + + MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t + MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_256) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + # + # 2 bit positions via two next hops + # + nh1 = "10.0.0.1" + nh2 = "10.0.0.2" + ip_route_1 = VppIpRoute(self, nh1, 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[VppMplsLabel(2001)])]) + ip_route_2 = VppIpRoute(self, nh2, 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[VppMplsLabel(2002)])]) + ip_route_1.add_vpp_config() + ip_route_2.add_vpp_config() + + bier_route_1 = VppBierRoute(self, bti, 1, + [VppRoutePath(nh1, 0xffffffff, + labels=[VppMplsLabel(101)])]) + bier_route_2 = VppBierRoute(self, bti, 2, + [VppRoutePath(nh2, 0xffffffff, + labels=[VppMplsLabel(102)])]) + bier_route_1.add_vpp_config() + bier_route_2.add_vpp_config() + + # + # An imposition object with both bit-positions set + # + bi = VppBierImp(self, bti, 333, scapy.compat.chb(0x3) * 32) + bi.add_vpp_config() + + # + # Add a multicast route that will forward into the BIER doamin + # + route_ing_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), + VppMRoutePath(0xffffffff, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + type=FibPathType.FIB_PATH_TYPE_BIER_IMP, + bier_imp=bi.bi_index)]) + route_ing_232_1_1_1.add_vpp_config() + + # + # inject an IP packet. We expect it to be BIER encapped and + # replicated. + # + p = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234)) + + self.pg0.add_stream([p]) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(2) + + # + # Encap Stack is; eth, MPLS, MPLS, BIER + # + igp_mpls = rx[0][MPLS] + self.assertEqual(igp_mpls.label, 2001) + self.assertEqual(igp_mpls.ttl, 64) + self.assertEqual(igp_mpls.s, 0) + bier_mpls = igp_mpls[MPLS].payload + self.assertEqual(bier_mpls.label, 101) + self.assertEqual(bier_mpls.ttl, 64) + self.assertEqual(bier_mpls.s, 1) + self.assertEqual(rx[0][BIER].length, 2) + + igp_mpls = rx[1][MPLS] + self.assertEqual(igp_mpls.label, 2002) + self.assertEqual(igp_mpls.ttl, 64) + self.assertEqual(igp_mpls.s, 0) + bier_mpls = igp_mpls[MPLS].payload + self.assertEqual(bier_mpls.label, 102) + self.assertEqual(bier_mpls.ttl, 64) + self.assertEqual(bier_mpls.s, 1) + self.assertEqual(rx[0][BIER].length, 2) + + def test_bier_tail(self): + """BIER Tail""" + + MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t + MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_256) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + # + # disposition table + # + bdt = VppBierDispTable(self, 8) + bdt.add_vpp_config() + + # + # BIER route in table that's for-us + # + bier_route_1 = VppBierRoute( + self, bti, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + nh_table_id=8)]) + bier_route_1.add_vpp_config() + + # + # An entry in the disposition table + # + bier_de_1 = VppBierDispEntry(self, bdt.id, 99, + BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4, + FibPathProto.FIB_PATH_NH_PROTO_BIER, + "0.0.0.0", 0, rpf_id=8192) + bier_de_1.add_vpp_config() + + # + # A multicast route to forward post BIER disposition + # + route_eg_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) + route_eg_232_1_1_1.add_vpp_config() + route_eg_232_1_1_1.update_rpf_id(8192) + + # + # A packet with all bits set gets spat out to BP:1 + # + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=BIERLength.BIER_LEN_256, + BitString=scapy.compat.chb(255)*32, + BFRID=99) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw()) + + self.send_and_expect(self.pg0, [p], self.pg1) + + # + # A packet that does not match the Disposition entry gets dropped + # + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=BIERLength.BIER_LEN_256, + BitString=scapy.compat.chb(255)*32, + BFRID=77) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw()) + self.send_and_assert_no_replies(self.pg0, p*2, + "no matching disposition entry") + + # + # Add the default route to the disposition table + # + bier_de_2 = VppBierDispEntry(self, bdt.id, 0, + BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4, + FibPathProto.FIB_PATH_NH_PROTO_BIER, + "0.0.0.0", 0, rpf_id=8192) + bier_de_2.add_vpp_config() + + # + # now the previous packet is forwarded + # + self.send_and_expect(self.pg0, [p], self.pg1) + + # + # A multicast route to forward post BIER disposition that needs + # a check against sending back into the BIER core + # + bi = VppBierImp(self, bti, 333, scapy.compat.chb(0x3) * 32) + bi.add_vpp_config() + + route_eg_232_1_1_2 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.2", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(0xffffffff, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, + proto=DpoProto.DPO_PROTO_BIER, + type=FibPathType.FIB_PATH_TYPE_BIER_IMP, + bier_imp=bi.bi_index), + VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) + route_eg_232_1_1_2.add_vpp_config() + route_eg_232_1_1_2.update_rpf_id(8192) + + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + MPLS(label=77, ttl=255) / + BIER(length=BIERLength.BIER_LEN_256, + BitString=scapy.compat.chb(255)*32, + BFRID=77) / + IP(src="1.1.1.1", dst="232.1.1.2") / + UDP(sport=1234, dport=1234) / + Raw()) + self.send_and_expect(self.pg0, [p], self.pg1) + + def bier_e2e(self, hdr_len_id, n_bytes, max_bp): + """ BIER end-to-end""" + + MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t + MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(0, 0, hdr_len_id) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + lowest = [b'\0'] * (n_bytes) + lowest[-1] = scapy.compat.chb(1) + highest = [b'\0'] * (n_bytes) + highest[0] = scapy.compat.chb(128) + + # + # Impostion Sets bit strings + # + bi_low = VppBierImp(self, bti, 333, lowest) + bi_low.add_vpp_config() + bi_high = VppBierImp(self, bti, 334, highest) + bi_high.add_vpp_config() + + # + # Add a multicast route that will forward into the BIER doamin + # + route_ing_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), + VppMRoutePath(0xffffffff, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + type=FibPathType.FIB_PATH_TYPE_BIER_IMP, + bier_imp=bi_low.bi_index)]) + route_ing_232_1_1_1.add_vpp_config() + route_ing_232_1_1_2 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.2", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), + VppMRoutePath(0xffffffff, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + type=FibPathType.FIB_PATH_TYPE_BIER_IMP, + bier_imp=bi_high.bi_index)]) + route_ing_232_1_1_2.add_vpp_config() + + # + # disposition table 8 + # + bdt = VppBierDispTable(self, 8) + bdt.add_vpp_config() + + # + # BIER routes in table that are for-us, resolving through + # disp table 8. + # + bier_route_1 = VppBierRoute( + self, bti, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + nh_table_id=8)]) + bier_route_1.add_vpp_config() + bier_route_max = VppBierRoute( + self, bti, max_bp, + [VppRoutePath("0.0.0.0", + 0xffffffff, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + nh_table_id=8)]) + bier_route_max.add_vpp_config() + + # + # An entry in the disposition table for sender 333 + # lookup in VRF 10 + # + bier_de_1 = VppBierDispEntry(self, bdt.id, 333, + BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4, + FibPathProto.FIB_PATH_NH_PROTO_BIER, + "0.0.0.0", 10, rpf_id=8192) + bier_de_1.add_vpp_config() + bier_de_1 = VppBierDispEntry(self, bdt.id, 334, + BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4, + FibPathProto.FIB_PATH_NH_PROTO_BIER, + "0.0.0.0", 10, rpf_id=8193) + bier_de_1.add_vpp_config() + + # + # Add a multicast routes that will forward the traffic + # post-disposition + # + route_eg_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + table_id=10, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) + route_eg_232_1_1_1.add_vpp_config() + route_eg_232_1_1_1.update_rpf_id(8192) + route_eg_232_1_1_2 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.2", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + table_id=10, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) + route_eg_232_1_1_2.add_vpp_config() + route_eg_232_1_1_2.update_rpf_id(8193) + + # + # inject a packet in VRF-0. We expect it to be BIER encapped, + # replicated, then hit the disposition and be forwarded + # out of VRF 10, i.e. on pg1 + # + p = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw(scapy.compat.chb(5) * 32)) + + rx = self.send_and_expect(self.pg0, p*NUM_PKTS, self.pg1) + + self.assertEqual(rx[0][IP].src, "1.1.1.1") + self.assertEqual(rx[0][IP].dst, "232.1.1.1") + + p = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src="1.1.1.1", dst="232.1.1.2") / + UDP(sport=1234, dport=1234) / + Raw(scapy.compat.chb(5) * 512)) + + rx = self.send_and_expect(self.pg0, p*NUM_PKTS, self.pg1) + self.assertEqual(rx[0][IP].src, "1.1.1.1") + self.assertEqual(rx[0][IP].dst, "232.1.1.2") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_e2e_1024(self): + """ BIER end-to-end BSL:1024""" + self.bier_e2e(BIERLength.BIER_LEN_1024, 128, 1024) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_e2e_512(self): + """ BIER end-to-end BSL:512""" + self.bier_e2e(BIERLength.BIER_LEN_512, 64, 512) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_e2e_256(self): + """ BIER end-to-end BSL:256""" + self.bier_e2e(BIERLength.BIER_LEN_256, 32, 256) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_bier_e2e_128(self): + """ BIER end-to-end BSL:128""" + self.bier_e2e(BIERLength.BIER_LEN_128, 16, 128) + + def test_bier_e2e_64(self): + """ BIER end-to-end BSL:64""" + self.bier_e2e(BIERLength.BIER_LEN_64, 8, 64) + + def test_bier_head_o_udp(self): + """BIER head over UDP""" + + MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t + MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t + + # + # Add a BIER table for sub-domain 1, set 0, and BSL 256 + # + bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256) + bt = VppBierTable(self, bti, 77) + bt.add_vpp_config() + + # + # 1 bit positions via 1 next hops + # + nh1 = "10.0.0.1" + ip_route = VppIpRoute(self, nh1, 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index, + labels=[VppMplsLabel(2001)])]) + ip_route.add_vpp_config() + + udp_encap = VppUdpEncap(self, + self.pg0.local_ip4, + nh1, + 330, 8138) + udp_encap.add_vpp_config() + + bier_route = VppBierRoute( + self, bti, 1, + [VppRoutePath("0.0.0.0", + 0xFFFFFFFF, + type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP, + next_hop_id=udp_encap.id)]) + bier_route.add_vpp_config() + + # + # An 2 imposition objects with all bit-positions set + # only use the second, but creating 2 tests with a non-zero + # value index in the route add + # + bi = VppBierImp(self, bti, 333, scapy.compat.chb(0xff) * 32) + bi.add_vpp_config() + bi2 = VppBierImp(self, bti, 334, scapy.compat.chb(0xff) * 32) + bi2.add_vpp_config() + + # + # Add a multicast route that will forward into the BIER doamin + # + route_ing_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), + VppMRoutePath(0xffffffff, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + type=FibPathType.FIB_PATH_TYPE_BIER_IMP, + bier_imp=bi2.bi_index)]) + route_ing_232_1_1_1.add_vpp_config() + + # + # inject a packet an IP. We expect it to be BIER and UDP encapped, + # + p = (Ether(dst=self.pg0.local_mac, + src=self.pg0.remote_mac) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234)) + + self.pg0.add_stream([p]) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg1.get_capture(1) + + # + # Encap Stack is, eth, IP, UDP, BIFT, BIER + # + self.assertEqual(rx[0][IP].src, self.pg0.local_ip4) + self.assertEqual(rx[0][IP].dst, nh1) + self.assertEqual(rx[0][UDP].sport, 330) + self.assertEqual(rx[0][UDP].dport, 8138) + self.assertEqual(rx[0][BIFT].bsl, BIERLength.BIER_LEN_256) + self.assertEqual(rx[0][BIFT].sd, 1) + self.assertEqual(rx[0][BIFT].set, 0) + self.assertEqual(rx[0][BIFT].ttl, 64) + self.assertEqual(rx[0][BIER].length, 2) + + def test_bier_tail_o_udp(self): + """BIER Tail over UDP""" + + MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t + MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t + + # + # Add a BIER table for sub-domain 0, set 0, and BSL 256 + # + bti = VppBierTableID(1, 0, BIERLength.BIER_LEN_256) + bt = VppBierTable(self, bti, MPLS_LABEL_INVALID) + bt.add_vpp_config() + + # + # disposition table + # + bdt = VppBierDispTable(self, 8) + bdt.add_vpp_config() + + # + # BIER route in table that's for-us + # + bier_route_1 = VppBierRoute( + self, bti, 1, + [VppRoutePath("0.0.0.0", + 0xffffffff, + proto=FibPathProto.FIB_PATH_NH_PROTO_BIER, + nh_table_id=8)]) + bier_route_1.add_vpp_config() + + # + # An entry in the disposition table + # + bier_de_1 = VppBierDispEntry(self, bdt.id, 99, + BIER_HDR_PAYLOAD.BIER_HDR_PROTO_IPV4, + FibPathProto.FIB_PATH_NH_PROTO_BIER, + "0.0.0.0", 0, rpf_id=8192) + bier_de_1.add_vpp_config() + + # + # A multicast route to forward post BIER disposition + # + route_eg_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, + paths=[VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) + route_eg_232_1_1_1.add_vpp_config() + route_eg_232_1_1_1.update_rpf_id(8192) + + # + # A packet with all bits set gets spat out to BP:1 + # + p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + UDP(sport=333, dport=8138) / + BIFT(sd=1, set=0, bsl=2, ttl=255) / + BIER(length=BIERLength.BIER_LEN_256, + BitString=scapy.compat.chb(255)*32, + BFRID=99) / + IP(src="1.1.1.1", dst="232.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw()) + + rx = self.send_and_expect(self.pg0, [p], self.pg1) + + +if __name__ == '__main__': + unittest.main(testRunner=VppTestRunner) |