X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=test%2Ftest_ip4.py;h=6f8047cace9bb6223e650c1b35add615809231a2;hp=36a907a66df2c87bbf53cf71779b0b181639f21e;hb=59f71132e;hpb=86d87c40dd97ced69c939299204fadf1859a2f50 diff --git a/test/test_ip4.py b/test/test_ip4.py index 36a907a66df..6f8047cace9 100644 --- a/test/test_ip4.py +++ b/test/test_ip4.py @@ -1,20 +1,42 @@ -#!/usr/bin/env python - -import unittest +#!/usr/bin/env python3 +import binascii +import random import socket +import unittest + +import scapy.compat +from scapy.contrib.mpls import MPLS +from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes +from scapy.layers.l2 import Ether, Dot1Q, ARP +from scapy.packet import Raw +from six import moves from framework import VppTestCase, VppTestRunner -from vpp_interface import VppInterface +from util import ppp +from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \ + VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \ + VppMplsTable, VppIpTable, FibPathType, find_route, \ + VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint +from vpp_papi import VppEnum +from vpp_neighbor import VppNeighbor +from vpp_lo_interface import VppLoInterface +from vpp_policer import VppPolicer -from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q -from scapy.layers.inet import IP, UDP +NUM_PKTS = 67 class TestIPv4(VppTestCase): """ IPv4 Test Case """ + @classmethod + def setUpClass(cls): + super(TestIPv4, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPv4, cls).tearDownClass() + def setUp(self): """ Perform test setup before test case. @@ -32,7 +54,6 @@ class TestIPv4(VppTestCase): :ivar list interfaces: pg interfaces and subinterfaces. :ivar dict flows: IPv4 packet flows in test. - :ivar list pg_if_packet_sizes: packet sizes in test. """ super(TestIPv4, self).setUp() @@ -51,8 +72,7 @@ class TestIPv4(VppTestCase): self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if] # packet sizes - self.pg_if_packet_sizes = [64, 512, 1518, 9018] - self.sub_if_packet_sizes = [64, 512, 1518 + 4, 9018 + 4] + self.pg_if_packet_sizes = [64, 1500, 9020] self.interfaces = list(self.pg_interfaces) self.interfaces.extend(self.sub_interfaces) @@ -64,70 +84,62 @@ class TestIPv4(VppTestCase): i.resolve_arp() # config 2M FIB entries - self.config_fib_entries(200) def tearDown(self): """Run standard test teardown and log ``show ip arp``.""" super(TestIPv4, self).tearDown() - if not self.vpp_dead: - self.logger.info(self.vapi.cli("show ip arp")) - # info(self.vapi.cli("show ip fib")) # many entries - def config_fib_entries(self, count): - """For each interface add to the FIB table *count* routes to - "10.0.0.1/32" destination with interface's local address as next-hop - address. + def show_commands_at_teardown(self): + self.logger.info(self.vapi.cli("show ip4 neighbors")) + # info(self.vapi.cli("show ip fib")) # many entries - :param int count: Number of FIB entries. + def modify_packet(self, src_if, packet_size, pkt): + """Add load, set destination IP and extend packet to required packet + size for defined interface. - - *TODO:* check if the next-hop address shouldn't be remote address - instead of local address. + :param VppInterface src_if: Interface to create packet for. + :param int packet_size: Required packet size. + :param Scapy pkt: Packet to be modified. """ - n_int = len(self.interfaces) - percent = 0 - counter = 0.0 - dest_addr = socket.inet_pton(socket.AF_INET, "10.0.0.1") - dest_addr_len = 32 - for i in self.interfaces: - next_hop_address = i.local_ip4n - for j in range(count / n_int): - self.vapi.ip_add_del_route( - dest_addr, dest_addr_len, next_hop_address) - counter += 1 - if counter / count * 100 > percent: - self.logger.info("Configure %d FIB entries .. %d%% done" % - (count, percent)) - percent += 1 - - def create_stream(self, src_if, packet_sizes): + dst_if_idx = int(packet_size / 10 % 2) + dst_if = self.flows[src_if][dst_if_idx] + info = self.create_packet_info(src_if, dst_if) + payload = self.info_to_payload(info) + p = pkt/Raw(payload) + p[IP].dst = dst_if.remote_ip4 + info.data = p.copy() + if isinstance(src_if, VppSubInterface): + p = src_if.add_dot1_layer(p) + self.extend_packet(p, packet_size) + + return p + + def create_stream(self, src_if): """Create input packet stream for defined interface. :param VppInterface src_if: Interface to create packet stream for. - :param list packet_sizes: Required packet sizes. """ - pkts = [] - for i in range(0, 257): - dst_if = self.flows[src_if][i % 2] - info = self.create_packet_info( - src_if.sw_if_index, dst_if.sw_if_index) - payload = self.info_to_payload(info) - p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / - IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) / - UDP(sport=1234, dport=1234) / - Raw(payload)) - info.data = p.copy() - if isinstance(src_if, VppSubInterface): - p = src_if.add_dot1_layer(p) - size = packet_sizes[(i // 2) % len(packet_sizes)] - self.extend_packet(p, size) - pkts.append(p) + hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0 + pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / + IP(src=src_if.remote_ip4) / + UDP(sport=1234, dport=1234)) + + pkts = [self.modify_packet(src_if, i, pkt_tmpl) + for i in moves.range(self.pg_if_packet_sizes[0], + self.pg_if_packet_sizes[1], 10)] + pkts_b = [self.modify_packet(src_if, i, pkt_tmpl) + for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext, + self.pg_if_packet_sizes[2] + hdr_ext, + 50)] + pkts.extend(pkts_b) + return pkts def verify_capture(self, dst_if, capture): """Verify captured input packet stream for defined interface. :param VppInterface dst_if: Interface to verify captured packet stream - for. + for. :param list capture: Captured packet stream. """ self.logger.info("Verifying capture on interface %s" % dst_if.name) @@ -146,11 +158,12 @@ class TestIPv4(VppTestCase): try: ip = packet[IP] udp = packet[UDP] - payload_info = self.payload_to_info(str(packet[Raw])) + payload_info = self.payload_to_info(packet[Raw]) packet_index = payload_info.index self.assertEqual(payload_info.dst, dst_sw_if_index) - self.logger.debug("Got packet on port %s: src=%u (id=%u)" % - (dst_if.name, payload_info.src, packet_index)) + self.logger.debug( + "Got packet on port %s: src=%u (id=%u)" % + (dst_if.name, payload_info.src, packet_index)) next_info = self.get_next_packet_info_for_interface2( payload_info.src, dst_sw_if_index, last_info[payload_info.src]) @@ -164,16 +177,14 @@ class TestIPv4(VppTestCase): self.assertEqual(udp.sport, saved_packet[UDP].sport) self.assertEqual(udp.dport, saved_packet[UDP].dport) except: - self.logger.error("Unexpected or invalid packet:") - self.logger.error(packet.show()) + self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise for i in self.interfaces: remaining_packet = self.get_next_packet_info_for_interface2( i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index]) - self.assertTrue( - remaining_packet is None, - "Interface %s: Packet expected from interface %s didn't arrive" % - (dst_if.name, i.name)) + self.assertTrue(remaining_packet is None, + "Interface %s: Packet expected from interface %s " + "didn't arrive" % (dst_if.name, i.name)) def test_fib(self): """ IPv4 FIB test @@ -181,15 +192,15 @@ class TestIPv4(VppTestCase): Test scenario: - Create IPv4 stream for pg0 interface - - Create IPv4 tagged streams for pg1's and pg2's subinterface. + - Create IPv4 tagged streams for pg1's and pg2's sub-interface. - Send and verify received packets on each interface. """ - pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes) + pkts = self.create_stream(self.pg0) self.pg0.add_stream(pkts) for i in self.sub_interfaces: - pkts = self.create_stream(i, self.sub_if_packet_sizes) + pkts = self.create_stream(i) i.parent.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) @@ -203,5 +214,2108 @@ class TestIPv4(VppTestCase): self.verify_capture(i, pkts) +class TestIPv4IfAddrRoute(VppTestCase): + """ IPv4 Interface Addr Route Test Case """ + + @classmethod + def setUpClass(cls): + super(TestIPv4IfAddrRoute, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPv4IfAddrRoute, cls).tearDownClass() + + def setUp(self): + super(TestIPv4IfAddrRoute, self).setUp() + + # create 1 pg interface + self.create_pg_interfaces(range(1)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPv4IfAddrRoute, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ipv4_ifaddrs_same_prefix(self): + """ IPv4 Interface Addresses Same Prefix test + + Test scenario: + + - Verify no route in FIB for prefix 10.10.10.0/24 + - Configure IPv4 address 10.10.10.10/24 on an interface + - Verify route in FIB for prefix 10.10.10.0/24 + - Configure IPv4 address 10.10.10.20/24 on an interface + - Delete 10.10.10.10/24 from interface + - Verify route in FIB for prefix 10.10.10.0/24 + - Delete 10.10.10.20/24 from interface + - Verify no route in FIB for prefix 10.10.10.0/24 + """ + + # create two addresses, verify route not present + if_addr1 = VppIpInterfaceAddress(self, self.pg0, "10.10.10.10", 24) + if_addr2 = VppIpInterfaceAddress(self, self.pg0, "10.10.10.20", 24) + self.assertFalse(if_addr1.query_vpp_config()) # 10.10.10.10/24 + self.assertFalse(find_route(self, "10.10.10.10", 32)) + self.assertFalse(find_route(self, "10.10.10.20", 32)) + self.assertFalse(find_route(self, "10.10.10.255", 32)) + self.assertFalse(find_route(self, "10.10.10.0", 32)) + + # configure first address, verify route present + if_addr1.add_vpp_config() + self.assertTrue(if_addr1.query_vpp_config()) # 10.10.10.10/24 + self.assertTrue(find_route(self, "10.10.10.10", 32)) + self.assertFalse(find_route(self, "10.10.10.20", 32)) + self.assertTrue(find_route(self, "10.10.10.255", 32)) + self.assertTrue(find_route(self, "10.10.10.0", 32)) + + # configure second address, delete first, verify route not removed + if_addr2.add_vpp_config() + if_addr1.remove_vpp_config() + self.assertFalse(if_addr1.query_vpp_config()) # 10.10.10.10/24 + self.assertTrue(if_addr2.query_vpp_config()) # 10.10.10.20/24 + self.assertFalse(find_route(self, "10.10.10.10", 32)) + self.assertTrue(find_route(self, "10.10.10.20", 32)) + self.assertTrue(find_route(self, "10.10.10.255", 32)) + self.assertTrue(find_route(self, "10.10.10.0", 32)) + + # delete second address, verify route removed + if_addr2.remove_vpp_config() + self.assertFalse(if_addr2.query_vpp_config()) # 10.10.10.20/24 + self.assertFalse(find_route(self, "10.10.10.10", 32)) + self.assertFalse(find_route(self, "10.10.10.20", 32)) + self.assertFalse(find_route(self, "10.10.10.255", 32)) + self.assertFalse(find_route(self, "10.10.10.0", 32)) + + def test_ipv4_ifaddr_route(self): + """ IPv4 Interface Address Route test + + Test scenario: + + - Create loopback + - Configure IPv4 address on loopback + - Verify that address is not in the FIB + - Bring loopback up + - Verify that address is in the FIB now + - Bring loopback down + - Verify that address is not in the FIB anymore + - Bring loopback up + - Configure IPv4 address on loopback + - Verify that address is in the FIB now + """ + + # create a loopback and configure IPv4 + loopbacks = self.create_loopback_interfaces(1) + lo_if = self.lo_interfaces[0] + + lo_if.local_ip4_prefix_len = 32 + lo_if.config_ip4() + + # The intf was down when addr was added -> entry not in FIB + fib4_dump = self.vapi.ip_route_dump(0) + self.assertFalse(lo_if.is_ip4_entry_in_fib_dump(fib4_dump)) + + # When intf is brought up, entry is added + lo_if.admin_up() + fib4_dump = self.vapi.ip_route_dump(0) + self.assertTrue(lo_if.is_ip4_entry_in_fib_dump(fib4_dump)) + + # When intf is brought down, entry is removed + lo_if.admin_down() + fib4_dump = self.vapi.ip_route_dump(0) + self.assertFalse(lo_if.is_ip4_entry_in_fib_dump(fib4_dump)) + + # Remove addr, bring up interface, re-add -> entry in FIB + lo_if.unconfig_ip4() + lo_if.admin_up() + lo_if.config_ip4() + fib4_dump = self.vapi.ip_route_dump(0) + self.assertTrue(lo_if.is_ip4_entry_in_fib_dump(fib4_dump)) + + +class TestICMPEcho(VppTestCase): + """ ICMP Echo Test Case """ + + @classmethod + def setUpClass(cls): + super(TestICMPEcho, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestICMPEcho, cls).tearDownClass() + + def setUp(self): + super(TestICMPEcho, self).setUp() + + # create 1 pg interface + self.create_pg_interfaces(range(1)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestICMPEcho, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_icmp_echo(self): + """ VPP replies to ICMP Echo Request + + Test scenario: + + - Receive ICMP Echo Request message on pg0 interface. + - Check outgoing ICMP Echo Reply message on pg0 interface. + """ + + icmp_id = 0xb + icmp_seq = 5 + icmp_load = b'\x0a' * 18 + p_echo_request = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + ICMP(id=icmp_id, seq=icmp_seq) / + Raw(load=icmp_load)) + + self.pg0.add_stream(p_echo_request) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + rx = rx[0] + ether = rx[Ether] + ipv4 = rx[IP] + icmp = rx[ICMP] + + self.assertEqual(ether.src, self.pg0.local_mac) + self.assertEqual(ether.dst, self.pg0.remote_mac) + + self.assertEqual(ipv4.src, self.pg0.local_ip4) + self.assertEqual(ipv4.dst, self.pg0.remote_ip4) + + self.assertEqual(icmptypes[icmp.type], "echo-reply") + self.assertEqual(icmp.id, icmp_id) + self.assertEqual(icmp.seq, icmp_seq) + self.assertEqual(icmp[Raw].load, icmp_load) + + +class TestIPv4FibCrud(VppTestCase): + """ FIB - add/update/delete - ip4 routes + + Test scenario: + - add 1k, + - del 100, + - add new 1k, + - del 1.5k + + ..note:: Python API is too slow to add many routes, needs replacement. + """ + + def config_fib_many_to_one(self, start_dest_addr, next_hop_addr, + count, start=0): + """ + + :param start_dest_addr: + :param next_hop_addr: + :param count: + :return list: added ips with 32 prefix + """ + routes = [] + for i in range(count): + r = VppIpRoute(self, start_dest_addr % (i + start), 32, + [VppRoutePath(next_hop_addr, 0xffffffff)]) + r.add_vpp_config() + routes.append(r) + return routes + + def unconfig_fib_many_to_one(self, start_dest_addr, next_hop_addr, + count, start=0): + + routes = [] + for i in range(count): + r = VppIpRoute(self, start_dest_addr % (i + start), 32, + [VppRoutePath(next_hop_addr, 0xffffffff)]) + r.remove_vpp_config() + routes.append(r) + return routes + + def create_stream(self, src_if, dst_if, routes, count): + pkts = [] + + for _ in range(count): + dst_addr = random.choice(routes).prefix.network_address + info = self.create_packet_info(src_if, dst_if) + payload = self.info_to_payload(info) + p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / + IP(src=src_if.remote_ip4, dst=str(dst_addr)) / + UDP(sport=1234, dport=1234) / + Raw(payload)) + info.data = p.copy() + self.extend_packet(p, random.choice(self.pg_if_packet_sizes)) + pkts.append(p) + + return pkts + + def _find_ip_match(self, find_in, pkt): + for p in find_in: + if self.payload_to_info(p[Raw]) == \ + self.payload_to_info(pkt[Raw]): + if p[IP].src != pkt[IP].src: + break + if p[IP].dst != pkt[IP].dst: + break + if p[UDP].sport != pkt[UDP].sport: + break + if p[UDP].dport != pkt[UDP].dport: + break + return p + return None + + def verify_capture(self, dst_interface, received_pkts, expected_pkts): + self.assertEqual(len(received_pkts), len(expected_pkts)) + to_verify = list(expected_pkts) + for p in received_pkts: + self.assertEqual(p.src, dst_interface.local_mac) + self.assertEqual(p.dst, dst_interface.remote_mac) + x = self._find_ip_match(to_verify, p) + to_verify.remove(x) + self.assertListEqual(to_verify, []) + + def verify_route_dump(self, routes): + for r in routes: + self.assertTrue(find_route(self, + r.prefix.network_address, + r.prefix.prefixlen)) + + def verify_not_in_route_dump(self, routes): + for r in routes: + self.assertFalse(find_route(self, + r.prefix.network_address, + r.prefix.prefixlen)) + + @classmethod + def setUpClass(cls): + """ + #. Create and initialize 3 pg interfaces. + #. initialize class attributes configured_routes and deleted_routes + to store information between tests. + """ + super(TestIPv4FibCrud, cls).setUpClass() + + try: + # create 3 pg interfaces + cls.create_pg_interfaces(range(3)) + + cls.interfaces = list(cls.pg_interfaces) + + # setup all interfaces + for i in cls.interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + cls.configured_routes = [] + cls.deleted_routes = [] + cls.pg_if_packet_sizes = [64, 512, 1518, 9018] + + except Exception: + super(TestIPv4FibCrud, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(TestIPv4FibCrud, cls).tearDownClass() + + def setUp(self): + super(TestIPv4FibCrud, self).setUp() + self.reset_packet_infos() + + self.configured_routes = [] + self.deleted_routes = [] + + def test_1_add_routes(self): + """ Add 1k routes """ + + # add 100 routes check with traffic script. + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 100)) + + self.verify_route_dump(self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 100) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 100) + self.pg1.add_stream(self.stream_1) + self.pg2.add_stream(self.stream_2) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + def test_2_del_routes(self): + """ Delete 100 routes + + - delete 10 routes check with traffic script. + """ + # config 1M FIB entries + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 100)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 10, start=10)) + for x in self.deleted_routes: + self.configured_routes.remove(x) + + self.verify_route_dump(self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 100) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 100) + self.stream_3 = self.create_stream( + self.pg1, self.pg0, self.deleted_routes, 100) + self.stream_4 = self.create_stream( + self.pg2, self.pg0, self.deleted_routes, 100) + self.pg1.add_stream(self.stream_1 + self.stream_3) + self.pg2.add_stream(self.stream_2 + self.stream_4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + def test_3_add_new_routes(self): + """ Add 1k routes + + - re-add 5 routes check with traffic script. + - add 100 routes check with traffic script. + """ + # config 1M FIB entries + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 100)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 10, start=10)) + for x in self.deleted_routes: + self.configured_routes.remove(x) + + tmp = self.config_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 5, start=10) + self.configured_routes.extend(tmp) + for x in tmp: + self.deleted_routes.remove(x) + + self.configured_routes.extend(self.config_fib_many_to_one( + "10.0.1.%d", self.pg0.remote_ip4, 100)) + + self.verify_route_dump(self.configured_routes) + + self.stream_1 = self.create_stream( + self.pg1, self.pg0, self.configured_routes, 300) + self.stream_2 = self.create_stream( + self.pg2, self.pg0, self.configured_routes, 300) + self.stream_3 = self.create_stream( + self.pg1, self.pg0, self.deleted_routes, 100) + self.stream_4 = self.create_stream( + self.pg2, self.pg0, self.deleted_routes, 100) + + self.pg1.add_stream(self.stream_1 + self.stream_3) + self.pg2.add_stream(self.stream_2 + self.stream_4) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + pkts = self.pg0.get_capture(len(self.stream_1) + len(self.stream_2)) + self.verify_capture(self.pg0, pkts, self.stream_1 + self.stream_2) + + # delete 5 routes check with traffic script. + # add 100 routes check with traffic script. + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 15)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.0.%d", self.pg0.remote_ip4, 85)) + self.deleted_routes.extend(self.unconfig_fib_many_to_one( + "10.0.1.%d", self.pg0.remote_ip4, 100)) + self.verify_not_in_route_dump(self.deleted_routes) + + +class TestIPNull(VppTestCase): + """ IPv4 routes via NULL """ + + @classmethod + def setUpClass(cls): + super(TestIPNull, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPNull, cls).tearDownClass() + + def setUp(self): + super(TestIPNull, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPNull, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_null(self): + """ IP NULL route """ + + # + # A route via IP NULL that will reply with ICMP unreachables + # + ip_unreach = VppIpRoute( + self, "10.0.0.1", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)]) + ip_unreach.add_vpp_config() + + p_unreach = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="10.0.0.1") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + self.pg0.add_stream(p_unreach) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-unreachable") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, "10.0.0.1") + + # + # ICMP replies are rate limited. so sit and spin. + # + self.sleep(1) + + # + # A route via IP NULL that will reply with ICMP prohibited + # + ip_prohibit = VppIpRoute( + self, "10.0.0.2", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)]) + ip_prohibit.add_vpp_config() + + p_prohibit = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="10.0.0.2") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + self.pg0.add_stream(p_prohibit) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + rx = self.pg0.get_capture(1) + + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-prohibited") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, "10.0.0.2") + + def test_ip_drop(self): + """ IP Drop Routes """ + + p = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst="1.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + r1 = VppIpRoute(self, "1.1.1.0", 24, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + r1.add_vpp_config() + + rx = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1) + + # + # insert a more specific as a drop + # + r2 = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + type=FibPathType.FIB_PATH_TYPE_DROP)]) + r2.add_vpp_config() + + self.send_and_assert_no_replies(self.pg0, p * NUM_PKTS, "Drop Route") + r2.remove_vpp_config() + rx = self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1) + + +class TestIPDisabled(VppTestCase): + """ IPv4 disabled """ + + @classmethod + def setUpClass(cls): + super(TestIPDisabled, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPDisabled, cls).tearDownClass() + + def setUp(self): + super(TestIPDisabled, self).setUp() + + # create 2 pg interfaces + self.create_pg_interfaces(range(2)) + + # PG0 is IP enalbed + self.pg0.admin_up() + self.pg0.config_ip4() + self.pg0.resolve_arp() + + # PG 1 is not IP enabled + self.pg1.admin_up() + + def tearDown(self): + super(TestIPDisabled, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_disabled(self): + """ IP Disabled """ + + # + # An (S,G). + # one accepting interface, pg0, 2 forwarding interfaces + # + route_232_1_1_1 = VppIpMRoute( + self, + "0.0.0.0", + "232.1.1.1", 32, + MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, + [VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT), + VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)]) + route_232_1_1_1.add_vpp_config() + + pu = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(src="10.10.10.10", dst=self.pg0.remote_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + pm = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(src="10.10.10.10", dst="232.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + # + # PG1 does not forward IP traffic + # + self.send_and_assert_no_replies(self.pg1, pu, "IP disabled") + self.send_and_assert_no_replies(self.pg1, pm, "IP disabled") + + # + # IP enable PG1 + # + self.pg1.config_ip4() + + # + # Now we get packets through + # + self.pg1.add_stream(pu) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg0.get_capture(1) + + self.pg1.add_stream(pm) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg0.get_capture(1) + + # + # Disable PG1 + # + self.pg1.unconfig_ip4() + + # + # PG1 does not forward IP traffic + # + self.send_and_assert_no_replies(self.pg1, pu, "IP disabled") + self.send_and_assert_no_replies(self.pg1, pm, "IP disabled") + + +class TestIPSubNets(VppTestCase): + """ IPv4 Subnets """ + + @classmethod + def setUpClass(cls): + super(TestIPSubNets, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPSubNets, cls).tearDownClass() + + def setUp(self): + super(TestIPSubNets, self).setUp() + + # create a 2 pg interfaces + self.create_pg_interfaces(range(2)) + + # pg0 we will use to experiment + self.pg0.admin_up() + + # pg1 is setup normally + self.pg1.admin_up() + self.pg1.config_ip4() + self.pg1.resolve_arp() + + def tearDown(self): + super(TestIPSubNets, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + + def test_ip_sub_nets(self): + """ IP Sub Nets """ + + # + # Configure a covering route to forward so we know + # when we are dropping + # + cover_route = VppIpRoute(self, "10.0.0.0", 8, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + cover_route.add_vpp_config() + + p = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.10.10", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + self.pg1.add_stream(p) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + # + # Configure some non-/24 subnets on an IP interface + # + ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10") + + self.vapi.sw_interface_add_del_address( + sw_if_index=self.pg0.sw_if_index, + prefix="10.10.10.10/16") + + pn = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.0.0", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + pb = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.255.255", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + self.send_and_assert_no_replies(self.pg1, pn, "IP Network address") + self.send_and_assert_no_replies(self.pg1, pb, "IP Broadcast address") + + # remove the sub-net and we are forwarding via the cover again + self.vapi.sw_interface_add_del_address( + sw_if_index=self.pg0.sw_if_index, + prefix="10.10.10.10/16", + is_add=0) + + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + self.pg1.add_stream(pb) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + # + # A /31 is a special case where the 'other-side' is an attached host + # packets to that peer generate ARP requests + # + ip_addr_n = socket.inet_pton(socket.AF_INET, "10.10.10.10") + + self.vapi.sw_interface_add_del_address( + sw_if_index=self.pg0.sw_if_index, + prefix="10.10.10.10/31") + + pn = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(dst="10.10.10.11", src=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg0.get_capture(1) + rx[ARP] + + # remove the sub-net and we are forwarding via the cover again + self.vapi.sw_interface_add_del_address( + sw_if_index=self.pg0.sw_if_index, + prefix="10.10.10.10/31", is_add=0) + + self.pg1.add_stream(pn) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = self.pg1.get_capture(1) + + +class TestIPLoadBalance(VppTestCase): + """ IPv4 Load-Balancing """ + + @classmethod + def setUpClass(cls): + super(TestIPLoadBalance, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPLoadBalance, cls).tearDownClass() + + def setUp(self): + super(TestIPLoadBalance, self).setUp() + + self.create_pg_interfaces(range(5)) + mpls_tbl = VppMplsTable(self, 0) + mpls_tbl.add_vpp_config() + + for i in self.pg_interfaces: + 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.admin_down() + super(TestIPLoadBalance, self).tearDown() + + def send_and_expect_load_balancing(self, input, pkts, outputs): + input.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rxs = [] + for oo in outputs: + rx = oo._get_capture(1) + self.assertNotEqual(0, len(rx)) + for r in rx: + rxs.append(r) + return rxs + + def send_and_expect_one_itf(self, input, pkts, itf): + input.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + rx = itf.get_capture(len(pkts)) + + def test_ip_load_balance(self): + """ IP Load-Balancing """ + + # + # An array of packets that differ only in the destination port + # + port_ip_pkts = [] + port_mpls_pkts = [] + + # + # An array of packets that differ only in the source address + # + src_ip_pkts = [] + src_mpls_pkts = [] + + for ii in range(NUM_PKTS): + port_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.1") / + UDP(sport=1234, dport=1234 + ii) / + Raw(b'\xa5' * 100)) + port_ip_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + port_ip_hdr)) + port_mpls_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + MPLS(label=66, ttl=2) / + port_ip_hdr)) + + src_ip_hdr = (IP(dst="10.0.0.1", src="20.0.0.%d" % ii) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + src_ip_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + src_ip_hdr)) + src_mpls_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + MPLS(label=66, ttl=2) / + src_ip_hdr)) + + route_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index), + VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index)]) + route_10_0_0_1.add_vpp_config() + + binding = VppMplsIpBind(self, 66, "10.0.0.1", 32) + binding.add_vpp_config() + + # + # inject the packet on pg0 - expect load-balancing across the 2 paths + # - since the default hash config is to use IP src,dst and port + # src,dst + # We are not going to ensure equal amounts of packets across each link, + # since the hash algorithm is statistical and therefore this can never + # be guaranteed. But with 64 different packets we do expect some + # balancing. So instead just ensure there is traffic on each link. + # + self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, + [self.pg1, self.pg2]) + + # + # change the flow hash config so it's only IP src,dst + # - now only the stream with differing source address will + # load-balance + # + self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=0, dport=0) + + self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, + [self.pg1, self.pg2]) + self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, + [self.pg1, self.pg2]) + + self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2) + + # + # change the flow hash config back to defaults + # + self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1) + + # + # Recursive prefixes + # - testing that 2 stages of load-balancing occurs and there is no + # polarisation (i.e. only 2 of 4 paths are used) + # + port_pkts = [] + src_pkts = [] + + for ii in range(257): + port_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(dst="1.1.1.1", src="20.0.0.1") / + UDP(sport=1234, dport=1234 + ii) / + Raw(b'\xa5' * 100))) + src_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(dst="1.1.1.1", src="20.0.0.%d" % ii) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100))) + + route_10_0_0_2 = VppIpRoute(self, "10.0.0.2", 32, + [VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index), + VppRoutePath(self.pg4.remote_ip4, + self.pg4.sw_if_index)]) + route_10_0_0_2.add_vpp_config() + + route_1_1_1_1 = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("10.0.0.2", 0xffffffff), + VppRoutePath("10.0.0.1", 0xffffffff)]) + route_1_1_1_1.add_vpp_config() + + # + # inject the packet on pg0 - expect load-balancing across all 4 paths + # + self.vapi.cli("clear trace") + self.send_and_expect_load_balancing(self.pg0, port_pkts, + [self.pg1, self.pg2, + self.pg3, self.pg4]) + self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg1, self.pg2, + self.pg3, self.pg4]) + + # + # bring down pg1 expect LB to adjust to use only those that are pu + # + self.pg1.link_down() + + rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg2, self.pg3, + self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + + # + # bring down pg2 expect LB to adjust to use only those that are pu + # + self.pg2.link_down() + + rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg3, self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + + # + # bring the links back up - expect LB over all again + # + self.pg1.link_up() + self.pg2.link_up() + + rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg1, self.pg2, + self.pg3, self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + + # + # The same link-up/down but this time admin state + # + self.pg1.admin_down() + self.pg2.admin_down() + rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg3, self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + self.pg1.admin_up() + self.pg2.admin_up() + self.pg1.resolve_arp() + self.pg2.resolve_arp() + rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, + [self.pg1, self.pg2, + self.pg3, self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + + # + # Recursive prefixes + # - testing that 2 stages of load-balancing, no choices + # + port_pkts = [] + + for ii in range(257): + port_pkts.append((Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(dst="1.1.1.2", src="20.0.0.2") / + UDP(sport=1234, dport=1234 + ii) / + Raw(b'\xa5' * 100))) + + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index)]) + route_10_0_0_3.add_vpp_config() + + route_1_1_1_2 = VppIpRoute(self, "1.1.1.2", 32, + [VppRoutePath("10.0.0.3", 0xffffffff)]) + route_1_1_1_2.add_vpp_config() + + # + # inject the packet on pg0 - rx only on via routes output interface + # + self.vapi.cli("clear trace") + self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3) + + # + # Add a LB route in the presence of a down link - expect no + # packets over the down link + # + self.pg3.link_down() + + route_10_0_0_3 = VppIpRoute(self, "10.0.0.3", 32, + [VppRoutePath(self.pg3.remote_ip4, + self.pg3.sw_if_index), + VppRoutePath(self.pg4.remote_ip4, + self.pg4.sw_if_index)]) + route_10_0_0_3.add_vpp_config() + + port_pkts = [] + for ii in range(257): + port_pkts.append(Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(dst="10.0.0.3", src="20.0.0.2") / + UDP(sport=1234, dport=1234 + ii) / + Raw(b'\xa5' * 100)) + + self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg4) + + # bring the link back up + self.pg3.link_up() + + rx = self.send_and_expect_load_balancing(self.pg0, port_pkts, + [self.pg3, self.pg4]) + self.assertEqual(len(src_pkts), len(rx)) + + +class TestIPVlan0(VppTestCase): + """ IPv4 VLAN-0 """ + + @classmethod + def setUpClass(cls): + super(TestIPVlan0, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPVlan0, cls).tearDownClass() + + def setUp(self): + super(TestIPVlan0, self).setUp() + + self.create_pg_interfaces(range(2)) + mpls_tbl = VppMplsTable(self, 0) + mpls_tbl.add_vpp_config() + + for i in self.pg_interfaces: + 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.admin_down() + super(TestIPVlan0, self).tearDown() + + def test_ip_vlan_0(self): + """ IP VLAN-0 """ + + pkts = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + Dot1Q(vlan=0) / + IP(dst=self.pg1.remote_ip4, + src=self.pg0.remote_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) * NUM_PKTS + + # + # Expect that packets sent on VLAN-0 are forwarded on the + # main interface. + # + self.send_and_expect(self.pg0, pkts, self.pg1) + + +class TestIPPunt(VppTestCase): + """ IPv4 Punt Police/Redirect """ + + @classmethod + def setUpClass(cls): + super(TestIPPunt, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPPunt, cls).tearDownClass() + + def setUp(self): + super(TestIPPunt, self).setUp() + + self.create_pg_interfaces(range(4)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPPunt, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_punt(self): + """ IP punt police and redirect """ + + # use UDP packet that have a port we need to explicitly + # register to get punted. + pt_l4 = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4 + af_ip4 = VppEnum.vl_api_address_family_t.ADDRESS_IP4 + udp_proto = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP + punt_udp = { + 'type': pt_l4, + 'punt': { + 'l4': { + 'af': af_ip4, + 'protocol': udp_proto, + 'port': 1234, + } + } + } + + self.vapi.set_punt(is_add=1, punt=punt_udp) + + p = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + pkts = p * 1025 + + # + # Configure a punt redirect via pg1. + # + nh_addr = self.pg1.remote_ip4 + self.vapi.ip_punt_redirect(self.pg0.sw_if_index, + self.pg1.sw_if_index, + nh_addr) + + self.send_and_expect(self.pg0, pkts, self.pg1) + + # + # add a policer + # + policer = VppPolicer(self, "ip4-punt", 400, 0, 10, 0, rate_type=1) + policer.add_vpp_config() + self.vapi.ip_punt_police(policer.policer_index) + + self.vapi.cli("clear trace") + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # + # the number of packet received should be greater than 0, + # but not equal to the number sent, since some were policed + # + rx = self.pg1._get_capture(1) + self.assertGreater(len(rx), 0) + self.assertLess(len(rx), len(pkts)) + + # + # remove the policer. back to full rx + # + self.vapi.ip_punt_police(policer.policer_index, is_add=0) + policer.remove_vpp_config() + self.send_and_expect(self.pg0, pkts, self.pg1) + + # + # remove the redirect. expect full drop. + # + self.vapi.ip_punt_redirect(self.pg0.sw_if_index, + self.pg1.sw_if_index, + nh_addr, + is_add=0) + self.send_and_assert_no_replies(self.pg0, pkts, + "IP no punt config") + + # + # Add a redirect that is not input port selective + # + self.vapi.ip_punt_redirect(0xffffffff, + self.pg1.sw_if_index, + nh_addr) + self.send_and_expect(self.pg0, pkts, self.pg1) + + self.vapi.ip_punt_redirect(0xffffffff, + self.pg1.sw_if_index, + nh_addr, + is_add=0) + + def test_ip_punt_dump(self): + """ IP4 punt redirect dump""" + + # + # Configure a punt redirects + # + nh_address = self.pg3.remote_ip4 + self.vapi.ip_punt_redirect(self.pg0.sw_if_index, + self.pg3.sw_if_index, + nh_address) + self.vapi.ip_punt_redirect(self.pg1.sw_if_index, + self.pg3.sw_if_index, + nh_address) + self.vapi.ip_punt_redirect(self.pg2.sw_if_index, + self.pg3.sw_if_index, + '0.0.0.0') + + # + # Dump pg0 punt redirects + # + punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index) + for p in punts: + self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index) + + # + # Dump punt redirects for all interfaces + # + punts = self.vapi.ip_punt_redirect_dump(0xffffffff) + self.assertEqual(len(punts), 3) + for p in punts: + self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index) + self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip4) + self.assertEqual(str(punts[2].punt.nh), '0.0.0.0') + + +class TestIPDeag(VppTestCase): + """ IPv4 Deaggregate Routes """ + + @classmethod + def setUpClass(cls): + super(TestIPDeag, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPDeag, cls).tearDownClass() + + def setUp(self): + super(TestIPDeag, self).setUp() + + self.create_pg_interfaces(range(3)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPDeag, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_deag(self): + """ IP Deag Routes """ + + # + # Create a table to be used for: + # 1 - another destination address lookup + # 2 - a source address lookup + # + table_dst = VppIpTable(self, 1) + table_src = VppIpTable(self, 2) + table_dst.add_vpp_config() + table_src.add_vpp_config() + + # + # Add a route in the default table to point to a deag/ + # second lookup in each of these tables + # + route_to_dst = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=1)]) + route_to_src = VppIpRoute( + self, "1.1.1.2", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=2, + type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)]) + route_to_dst.add_vpp_config() + route_to_src.add_vpp_config() + + # + # packets to these destination are dropped, since they'll + # hit the respective default routes in the second table + # + p_dst = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="5.5.5.5", dst="1.1.1.1") / + TCP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + p_src = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="2.2.2.2", dst="1.1.1.2") / + TCP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + pkts_dst = p_dst * 257 + pkts_src = p_src * 257 + + self.send_and_assert_no_replies(self.pg0, pkts_dst, + "IP in dst table") + self.send_and_assert_no_replies(self.pg0, pkts_src, + "IP in src table") + + # + # add a route in the dst table to forward via pg1 + # + route_in_dst = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)], + table_id=1) + route_in_dst.add_vpp_config() + + self.send_and_expect(self.pg0, pkts_dst, self.pg1) + + # + # add a route in the src table to forward via pg2 + # + route_in_src = VppIpRoute(self, "2.2.2.2", 32, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index)], + table_id=2) + route_in_src.add_vpp_config() + self.send_and_expect(self.pg0, pkts_src, self.pg2) + + # + # loop in the lookup DP + # + route_loop = VppIpRoute(self, "2.2.2.3", 32, + [VppRoutePath("0.0.0.0", + 0xffffffff, + nh_table_id=0)]) + route_loop.add_vpp_config() + + p_l = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="2.2.2.4", dst="2.2.2.3") / + TCP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + self.send_and_assert_no_replies(self.pg0, p_l * 257, + "IP lookup loop") + + +class TestIPInput(VppTestCase): + """ IPv4 Input Exceptions """ + + @classmethod + def setUpClass(cls): + super(TestIPInput, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPInput, cls).tearDownClass() + + def setUp(self): + super(TestIPInput, self).setUp() + + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPInput, self).tearDown() + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + + def test_ip_input(self): + """ IP Input Exceptions """ + + # i can't find a way in scapy to construct an IP packet + # with a length less than the IP header length + + # + # Packet too short - this is forwarded + # + p_short = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + len=40) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_expect(self.pg0, p_short * NUM_PKTS, self.pg1) + + # + # Packet too long - this is dropped + # + p_long = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + len=400) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_long * NUM_PKTS, + "too long") + + # + # bad chksum - this is dropped + # + p_chksum = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + chksum=400) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_chksum * NUM_PKTS, + "bad checksum") + + # + # bad version - this is dropped + # + p_ver = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + version=3) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_ver * NUM_PKTS, + "funky version") + + # + # fragment offset 1 - this is dropped + # + p_frag = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + frag=1) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_assert_no_replies(self.pg0, p_frag * NUM_PKTS, + "frag offset") + + # + # TTL expired packet + # + p_ttl = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + ttl=1) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 100)) + + rx = self.send_and_expect(self.pg0, p_ttl * NUM_PKTS, self.pg0) + + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "time-exceeded") + self.assertEqual(icmpcodes[icmp.type][icmp.code], + "ttl-zero-during-transit") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, self.pg1.remote_ip4) + + # + # MTU exceeded + # + p_mtu = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, + dst=self.pg1.remote_ip4, + ttl=10, flags='DF') / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 2000)) + + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1500, 0, 0, 0]) + + rx = self.send_and_expect(self.pg0, p_mtu * NUM_PKTS, self.pg0) + rx = rx[0] + icmp = rx[ICMP] + + self.assertEqual(icmptypes[icmp.type], "dest-unreach") + self.assertEqual(icmpcodes[icmp.type][icmp.code], + "fragmentation-needed") + self.assertEqual(icmp.src, self.pg0.remote_ip4) + self.assertEqual(icmp.dst, self.pg1.remote_ip4) + + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2500, 0, 0, 0]) + rx = self.send_and_expect(self.pg0, p_mtu * NUM_PKTS, self.pg1) + + # Reset MTU for subsequent tests + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0]) + + # + # source address 0.0.0.0 and 25.255.255.255 and for-us + # + p_s0 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="0.0.0.0", + dst=self.pg0.local_ip4) / + ICMP(id=4, seq=4) / + Raw(load=b'\x0a' * 18)) + rx = self.send_and_assert_no_replies(self.pg0, p_s0 * 17) + + p_s0 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="255.255.255.255", + dst=self.pg0.local_ip4) / + ICMP(id=4, seq=4) / + Raw(load=b'\x0a' * 18)) + rx = self.send_and_assert_no_replies(self.pg0, p_s0 * 17) + + +class TestIPDirectedBroadcast(VppTestCase): + """ IPv4 Directed Broadcast """ + + @classmethod + def setUpClass(cls): + super(TestIPDirectedBroadcast, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPDirectedBroadcast, cls).tearDownClass() + + def setUp(self): + super(TestIPDirectedBroadcast, self).setUp() + + self.create_pg_interfaces(range(2)) + + for i in self.pg_interfaces: + i.admin_up() + + def tearDown(self): + super(TestIPDirectedBroadcast, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + + def test_ip_input(self): + """ IP Directed Broadcast """ + + # + # set the directed broadcast on pg0 first, then config IP4 addresses + # for pg1 directed broadcast is always disabled + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 1) + + p0 = (Ether(src=self.pg1.remote_mac, + dst=self.pg1.local_mac) / + IP(src="1.1.1.1", + dst=self.pg0._local_ip4_bcast) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 2000)) + p1 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst=self.pg1._local_ip4_bcast) / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 2000)) + + self.pg0.config_ip4() + self.pg0.resolve_arp() + self.pg1.config_ip4() + self.pg1.resolve_arp() + + # + # test packet is L2 broadcast + # + rx = self.send_and_expect(self.pg1, p0 * NUM_PKTS, self.pg0) + self.assertTrue(rx[0][Ether].dst, "ff:ff:ff:ff:ff:ff") + + self.send_and_assert_no_replies(self.pg0, p1 * NUM_PKTS, + "directed broadcast disabled") + + # + # toggle directed broadcast on pg0 + # + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 0) + self.send_and_assert_no_replies(self.pg1, p0 * NUM_PKTS, + "directed broadcast disabled") + + self.vapi.sw_interface_set_ip_directed_broadcast( + self.pg0.sw_if_index, 1) + rx = self.send_and_expect(self.pg1, p0 * NUM_PKTS, self.pg0) + + self.pg0.unconfig_ip4() + self.pg1.unconfig_ip4() + + +class TestIPLPM(VppTestCase): + """ IPv4 longest Prefix Match """ + + @classmethod + def setUpClass(cls): + super(TestIPLPM, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPLPM, cls).tearDownClass() + + def setUp(self): + super(TestIPLPM, self).setUp() + + self.create_pg_interfaces(range(4)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + super(TestIPLPM, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + i.unconfig_ip4() + + def test_ip_lpm(self): + """ IP longest Prefix Match """ + + s_24 = VppIpRoute(self, "10.1.2.0", 24, + [VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + s_24.add_vpp_config() + s_8 = VppIpRoute(self, "10.0.0.0", 8, + [VppRoutePath(self.pg2.remote_ip4, + self.pg2.sw_if_index)]) + s_8.add_vpp_config() + + p_8 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst="10.1.1.1") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 2000)) + p_24 = (Ether(src=self.pg0.remote_mac, + dst=self.pg0.local_mac) / + IP(src="1.1.1.1", + dst="10.1.2.1") / + UDP(sport=1234, dport=1234) / + Raw(b'\xa5' * 2000)) + + self.logger.info(self.vapi.cli("sh ip fib mtrie")) + rx = self.send_and_expect(self.pg0, p_8 * NUM_PKTS, self.pg2) + rx = self.send_and_expect(self.pg0, p_24 * NUM_PKTS, self.pg1) + + +class TestIPv4Frag(VppTestCase): + """ IPv4 fragmentation """ + + @classmethod + def setUpClass(cls): + super(TestIPv4Frag, cls).setUpClass() + + cls.create_pg_interfaces([0, 1]) + cls.src_if = cls.pg0 + cls.dst_if = cls.pg1 + + # setup all interfaces + for i in cls.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + @classmethod + def tearDownClass(cls): + super(TestIPv4Frag, cls).tearDownClass() + + def test_frag_large_packets(self): + """ Fragmentation of large packets """ + + self.vapi.cli("adjacency counters enable") + + p = (Ether(dst=self.src_if.local_mac, src=self.src_if.remote_mac) / + IP(src=self.src_if.remote_ip4, dst=self.dst_if.remote_ip4) / + UDP(sport=1234, dport=5678) / Raw()) + self.extend_packet(p, 6000, "abcde") + saved_payload = p[Raw].load + + nbr = VppNeighbor(self, + self.dst_if.sw_if_index, + self.dst_if.remote_mac, + self.dst_if.remote_ip4).add_vpp_config() + + # Force fragmentation by setting MTU of output interface + # lower than packet size + self.vapi.sw_interface_set_mtu(self.dst_if.sw_if_index, + [5000, 0, 0, 0]) + + self.pg_enable_capture() + self.src_if.add_stream(p) + self.pg_start() + + # Expecting 3 fragments because size of created fragments currently + # cannot be larger then VPP buffer size (which is 2048) + packets = self.dst_if.get_capture(3) + + # we should show 3 packets thru the neighbor + self.assertEqual(3, nbr.get_stats()['packets']) + + # Assume VPP sends the fragments in order + payload = b'' + for p in packets: + payload_offset = p.frag * 8 + if payload_offset > 0: + payload_offset -= 8 # UDP header is not in payload + self.assert_equal(payload_offset, len(payload)) + payload += p[Raw].load + self.assert_equal(payload, saved_payload, "payload") + + +class TestIPReplace(VppTestCase): + """ IPv4 Table Replace """ + + @classmethod + def setUpClass(cls): + super(TestIPReplace, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPReplace, cls).tearDownClass() + + def setUp(self): + super(TestIPReplace, self).setUp() + + self.create_pg_interfaces(range(4)) + + table_id = 1 + self.tables = [] + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + i.generate_remote_hosts(2) + self.tables.append(VppIpTable(self, table_id).add_vpp_config()) + table_id += 1 + + def tearDown(self): + super(TestIPReplace, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + i.unconfig_ip4() + + def test_replace(self): + """ IP Table Replace """ + + N_ROUTES = 20 + links = [self.pg0, self.pg1, self.pg2, self.pg3] + routes = [[], [], [], []] + + # load up the tables with some routes + for ii, t in enumerate(self.tables): + for jj in range(N_ROUTES): + uni = VppIpRoute( + self, "10.0.0.%d" % jj, 32, + [VppRoutePath(links[ii].remote_hosts[0].ip4, + links[ii].sw_if_index), + VppRoutePath(links[ii].remote_hosts[1].ip4, + links[ii].sw_if_index)], + table_id=t.table_id).add_vpp_config() + multi = VppIpMRoute( + self, "0.0.0.0", + "239.0.0.%d" % jj, 32, + MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, + [VppMRoutePath(self.pg0.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT), + VppMRoutePath(self.pg1.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD), + VppMRoutePath(self.pg2.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD), + VppMRoutePath(self.pg3.sw_if_index, + MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)], + table_id=t.table_id).add_vpp_config() + routes[ii].append({'uni': uni, + 'multi': multi}) + + # + # replace the tables a few times + # + for kk in range(3): + # replace_begin each table + for t in self.tables: + t.replace_begin() + + # all the routes are still there + for ii, t in enumerate(self.tables): + dump = t.dump() + mdump = t.mdump() + for r in routes[ii]: + self.assertTrue(find_route_in_dump(dump, r['uni'], t)) + self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t)) + + # redownload the even numbered routes + for ii, t in enumerate(self.tables): + for jj in range(0, N_ROUTES, 2): + routes[ii][jj]['uni'].add_vpp_config() + routes[ii][jj]['multi'].add_vpp_config() + + # signal each table replace_end + for t in self.tables: + t.replace_end() + + # we should find the even routes, but not the odd + for ii, t in enumerate(self.tables): + dump = t.dump() + mdump = t.mdump() + for jj in range(0, N_ROUTES, 2): + self.assertTrue(find_route_in_dump( + dump, routes[ii][jj]['uni'], t)) + self.assertTrue(find_mroute_in_dump( + mdump, routes[ii][jj]['multi'], t)) + for jj in range(1, N_ROUTES - 1, 2): + self.assertFalse(find_route_in_dump( + dump, routes[ii][jj]['uni'], t)) + self.assertFalse(find_mroute_in_dump( + mdump, routes[ii][jj]['multi'], t)) + + # reload all the routes + for ii, t in enumerate(self.tables): + for r in routes[ii]: + r['uni'].add_vpp_config() + r['multi'].add_vpp_config() + + # all the routes are still there + for ii, t in enumerate(self.tables): + dump = t.dump() + mdump = t.mdump() + for r in routes[ii]: + self.assertTrue(find_route_in_dump(dump, r['uni'], t)) + self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t)) + + # + # finally flush the tables for good measure + # + for t in self.tables: + t.flush() + self.assertEqual(len(t.dump()), 5) + self.assertEqual(len(t.mdump()), 3) + + +class TestIPCover(VppTestCase): + """ IPv4 Table Cover """ + + @classmethod + def setUpClass(cls): + super(TestIPCover, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIPCover, cls).tearDownClass() + + def setUp(self): + super(TestIPCover, self).setUp() + + self.create_pg_interfaces(range(4)) + + table_id = 1 + self.tables = [] + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + i.generate_remote_hosts(2) + self.tables.append(VppIpTable(self, table_id).add_vpp_config()) + table_id += 1 + + def tearDown(self): + super(TestIPCover, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + i.unconfig_ip4() + + def test_cover(self): + """ IP Table Cover """ + + # add a loop back with a /32 prefix + lo = VppLoInterface(self) + lo.admin_up() + a = VppIpInterfaceAddress(self, lo, "127.0.0.1", 32).add_vpp_config() + + # add a neighbour that matches the loopback's /32 + nbr = VppNeighbor(self, + lo.sw_if_index, + lo.remote_mac, + "127.0.0.1").add_vpp_config() + + # add the default route which will be the cover for /32 + r = VppIpRoute(self, "0.0.0.0", 0, + [VppRoutePath("127.0.0.1", + lo.sw_if_index)], + register=False).add_vpp_config() + + # add/remove/add a longer mask cover + r = VppIpRoute(self, "127.0.0.0", 8, + [VppRoutePath("127.0.0.1", + lo.sw_if_index)]).add_vpp_config() + r.remove_vpp_config() + r.add_vpp_config() + + # remove the default route + r.remove_vpp_config() + + +class TestIP4Replace(VppTestCase): + """ IPv4 Interface Address Replace """ + + @classmethod + def setUpClass(cls): + super(TestIP4Replace, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(TestIP4Replace, cls).tearDownClass() + + def setUp(self): + super(TestIP4Replace, self).setUp() + + self.create_pg_interfaces(range(4)) + + for i in self.pg_interfaces: + i.admin_up() + + def tearDown(self): + super(TestIP4Replace, self).tearDown() + for i in self.pg_interfaces: + i.admin_down() + + def get_n_pfxs(self, intf): + return len(self.vapi.ip_address_dump(intf.sw_if_index)) + + def test_replace(self): + """ IP interface address replace """ + + intf_pfxs = [[], [], [], []] + + # add prefixes to each of the interfaces + for i in range(len(self.pg_interfaces)): + intf = self.pg_interfaces[i] + + # 172.16.x.1/24 + addr = "172.16.%d.1" % intf.sw_if_index + a = VppIpInterfaceAddress(self, intf, addr, 24).add_vpp_config() + intf_pfxs[i].append(a) + + # 172.16.x.2/24 - a different address in the same subnet as above + addr = "172.16.%d.2" % intf.sw_if_index + a = VppIpInterfaceAddress(self, intf, addr, 24).add_vpp_config() + intf_pfxs[i].append(a) + + # 172.15.x.2/24 - a different address and subnet + addr = "172.15.%d.2" % intf.sw_if_index + a = VppIpInterfaceAddress(self, intf, addr, 24).add_vpp_config() + intf_pfxs[i].append(a) + + # a dump should n_address in it + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 3) + + # + # remove all the address thru a replace + # + self.vapi.sw_interface_address_replace_begin() + self.vapi.sw_interface_address_replace_end() + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 0) + + # + # add all the interface addresses back + # + for p in intf_pfxs: + for v in p: + v.add_vpp_config() + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 3) + + # + # replace again, but this time update/re-add the address on the first + # two interfaces + # + self.vapi.sw_interface_address_replace_begin() + + for p in intf_pfxs[:2]: + for v in p: + v.add_vpp_config() + + self.vapi.sw_interface_address_replace_end() + + # on the first two the address still exist, + # on the other two they do not + for intf in self.pg_interfaces[:2]: + self.assertEqual(self.get_n_pfxs(intf), 3) + for p in intf_pfxs[:2]: + for v in p: + self.assertTrue(v.query_vpp_config()) + for intf in self.pg_interfaces[2:]: + self.assertEqual(self.get_n_pfxs(intf), 0) + + # + # add all the interface addresses back on the last two + # + for p in intf_pfxs[2:]: + for v in p: + v.add_vpp_config() + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 3) + + # + # replace again, this time add different prefixes on all the interfaces + # + self.vapi.sw_interface_address_replace_begin() + + pfxs = [] + for intf in self.pg_interfaces: + # 172.18.x.1/24 + addr = "172.18.%d.1" % intf.sw_if_index + pfxs.append(VppIpInterfaceAddress(self, intf, addr, + 24).add_vpp_config()) + + self.vapi.sw_interface_address_replace_end() + + # only .18 should exist on each interface + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 1) + for pfx in pfxs: + self.assertTrue(pfx.query_vpp_config()) + + # + # remove everything + # + self.vapi.sw_interface_address_replace_begin() + self.vapi.sw_interface_address_replace_end() + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 0) + + # + # add prefixes to each interface. post-begin add the prefix from + # interface X onto interface Y. this would normally be an error + # since it would generate a 'duplicate address' warning. but in + # this case, since what is newly downloaded is sane, it's ok + # + for intf in self.pg_interfaces: + # 172.18.x.1/24 + addr = "172.18.%d.1" % intf.sw_if_index + VppIpInterfaceAddress(self, intf, addr, 24).add_vpp_config() + + self.vapi.sw_interface_address_replace_begin() + + pfxs = [] + for intf in self.pg_interfaces: + # 172.18.x.1/24 + addr = "172.18.%d.1" % (intf.sw_if_index + 1) + pfxs.append(VppIpInterfaceAddress(self, intf, + addr, 24).add_vpp_config()) + + self.vapi.sw_interface_address_replace_end() + + self.logger.info(self.vapi.cli("sh int addr")) + + for intf in self.pg_interfaces: + self.assertEqual(self.get_n_pfxs(intf), 1) + for pfx in pfxs: + self.assertTrue(pfx.query_vpp_config()) + + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)