| #!/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 util import ppp |
| from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \ |
| VppMRoutePath, VppMplsIpBind, \ |
| VppMplsTable, VppIpTable, FibPathType, find_route, \ |
| VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump |
| from vpp_ip import VppIpPuntPolicer, VppIpPuntRedirect |
| 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, PolicerAction |
| |
| 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. |
| |
| **Config:** |
| - create 3 pg interfaces |
| - untagged pg0 interface |
| - Dot1Q subinterface on pg1 |
| - Dot1AD subinterface on pg2 |
| - setup interfaces: |
| - put it into UP state |
| - set IPv4 addresses |
| - resolve neighbor address using ARP |
| - configure 200 fib entries |
| |
| :ivar list interfaces: pg interfaces and subinterfaces. |
| :ivar dict flows: IPv4 packet flows in test. |
| """ |
| super(TestIPv4, self).setUp() |
| |
| # create 3 pg interfaces |
| self.create_pg_interfaces(range(3)) |
| |
| # create 2 subinterfaces for pg1 and pg2 |
| self.sub_interfaces = [ |
| VppDot1QSubint(self, self.pg1, 100), |
| VppDot1ADSubint(self, self.pg2, 200, 300, 400)] |
| |
| # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc. |
| self.flows = dict() |
| self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if] |
| self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if] |
| self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if] |
| |
| # packet sizes |
| self.pg_if_packet_sizes = [64, 1500, 9020] |
| |
| self.interfaces = list(self.pg_interfaces) |
| self.interfaces.extend(self.sub_interfaces) |
| |
| # setup all interfaces |
| for i in self.interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.resolve_arp() |
| |
| # config 2M FIB entries |
| |
| def tearDown(self): |
| """Run standard test teardown and log ``show ip arp``.""" |
| super(TestIPv4, self).tearDown() |
| |
| def show_commands_at_teardown(self): |
| self.logger.info(self.vapi.cli("show ip4 neighbors")) |
| # info(self.vapi.cli("show ip fib")) # many 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. |
| |
| :param VppInterface src_if: Interface to create packet for. |
| :param int packet_size: Required packet size. |
| :param Scapy pkt: Packet to be modified. |
| """ |
| 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. |
| """ |
| 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. |
| :param list capture: Captured packet stream. |
| """ |
| self.logger.info("Verifying capture on interface %s" % dst_if.name) |
| last_info = dict() |
| for i in self.interfaces: |
| last_info[i.sw_if_index] = None |
| is_sub_if = False |
| dst_sw_if_index = dst_if.sw_if_index |
| if hasattr(dst_if, 'parent'): |
| is_sub_if = True |
| for packet in capture: |
| if is_sub_if: |
| # Check VLAN tags and Ethernet header |
| packet = dst_if.remove_dot1_layer(packet) |
| self.assertTrue(Dot1Q not in packet) |
| try: |
| ip = packet[IP] |
| udp = packet[UDP] |
| 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)) |
| next_info = self.get_next_packet_info_for_interface2( |
| payload_info.src, dst_sw_if_index, |
| last_info[payload_info.src]) |
| last_info[payload_info.src] = next_info |
| self.assertTrue(next_info is not None) |
| self.assertEqual(packet_index, next_info.index) |
| saved_packet = next_info.data |
| # Check standard fields |
| self.assertEqual(ip.src, saved_packet[IP].src) |
| self.assertEqual(ip.dst, saved_packet[IP].dst) |
| self.assertEqual(udp.sport, saved_packet[UDP].sport) |
| self.assertEqual(udp.dport, saved_packet[UDP].dport) |
| except: |
| 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)) |
| |
| def test_fib(self): |
| """ IPv4 FIB test |
| |
| Test scenario: |
| |
| - Create IPv4 stream for pg0 interface |
| - 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.pg0.add_stream(pkts) |
| |
| for i in self.sub_interfaces: |
| pkts = self.create_stream(i) |
| i.parent.add_stream(pkts) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| pkts = self.pg0.get_capture() |
| self.verify_capture(self.pg0, pkts) |
| |
| for i in self.sub_interfaces: |
| pkts = i.parent.get_capture() |
| self.verify_capture(i, pkts) |
| |
| |
| class TestIPv4RouteLookup(VppTestCase): |
| """ IPv4 Route Lookup Test Case """ |
| routes = [] |
| |
| def route_lookup(self, prefix, exact): |
| return self.vapi.api(self.vapi.papi.ip_route_lookup, |
| { |
| 'table_id': 0, |
| 'exact': exact, |
| 'prefix': prefix, |
| }) |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv4RouteLookup, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv4RouteLookup, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPv4RouteLookup, self).setUp() |
| |
| drop_nh = VppRoutePath("127.0.0.1", 0xffffffff, |
| type=FibPathType.FIB_PATH_TYPE_DROP) |
| |
| # Add 3 routes |
| r = VppIpRoute(self, "1.1.0.0", 16, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| r = VppIpRoute(self, "1.1.1.0", 24, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| r = VppIpRoute(self, "1.1.1.1", 32, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| def tearDown(self): |
| # Remove the routes we added |
| for r in self.routes: |
| r.remove_vpp_config() |
| |
| super(TestIPv4RouteLookup, self).tearDown() |
| |
| def test_exact_match(self): |
| # Verify we find the host route |
| prefix = "1.1.1.1/32" |
| result = self.route_lookup(prefix, True) |
| assert (prefix == str(result.route.prefix)) |
| |
| # Verify we find a middle prefix route |
| prefix = "1.1.1.0/24" |
| result = self.route_lookup(prefix, True) |
| assert (prefix == str(result.route.prefix)) |
| |
| # Verify we do not find an available LPM. |
| with self.vapi.assert_negative_api_retval(): |
| self.route_lookup("1.1.1.2/32", True) |
| |
| def test_longest_prefix_match(self): |
| # verify we find lpm |
| lpm_prefix = "1.1.1.0/24" |
| result = self.route_lookup("1.1.1.2/32", False) |
| assert (lpm_prefix == str(result.route.prefix)) |
| |
| # Verify we find the exact when not requested |
| result = self.route_lookup(lpm_prefix, False) |
| assert (lpm_prefix == str(result.route.prefix)) |
| |
| # Can't seem to delete the default route so no negative LPM test. |
| |
| |
| 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)) |
| |
| def test_ipv4_ifaddr_del(self): |
| """ Delete an interface address that does not exist """ |
| |
| loopbacks = self.create_loopback_interfaces(1) |
| lo = self.lo_interfaces[0] |
| |
| lo.config_ip4() |
| lo.admin_up() |
| |
| # |
| # try and remove pg0's subnet from lo |
| # |
| with self.vapi.assert_negative_api_retval(): |
| self.vapi.sw_interface_add_del_address( |
| sw_if_index=lo.sw_if_index, |
| prefix=self.pg0.local_ip4_prefix, |
| is_add=0) |
| |
| |
| 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 """ |
| |
| MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t |
| MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t |
| |
| # |
| # 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_API_ENTRY_FLAG_NONE, |
| [VppMRoutePath(self.pg1.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), |
| VppMRoutePath(self.pg0.sw_if_index, |
| MRouteItfFlags.MFIB_API_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): |
| self.vapi.cli("clear trace") |
| 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)) |
| rxs.append(rx) |
| 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 total_len(self, rxs): |
| n = 0 |
| for rx in rxs: |
| n += len(rx) |
| return n |
| |
| def test_ip_load_balance(self): |
| """ IP Load-Balancing """ |
| |
| fhc = VppEnum.vl_api_ip_flow_hash_config_t |
| af = VppEnum.vl_api_address_family_t |
| |
| # |
| # 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. |
| # |
| rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, |
| [self.pg1, self.pg2]) |
| n_ip_pg0 = len(rx[0]) |
| 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]) |
| rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, |
| [self.pg1, self.pg2]) |
| n_mpls_pg0 = len(rx[0]) |
| |
| # |
| # change the router ID and expect the distribution changes |
| # |
| self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111) |
| |
| rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, |
| [self.pg1, self.pg2]) |
| self.assertNotEqual(n_ip_pg0, len(rx[0])) |
| |
| rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, |
| [self.pg1, self.pg2]) |
| self.assertNotEqual(n_mpls_pg0, len(rx[0])) |
| |
| # |
| # 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_v2( |
| af=af.ADDRESS_IP4, |
| table_id=0, |
| flow_hash_config=(fhc.IP_API_FLOW_HASH_SRC_IP | |
| fhc.IP_API_FLOW_HASH_DST_IP | |
| fhc.IP_API_FLOW_HASH_PROTO)) |
| |
| 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, |
| proto=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 up |
| # |
| 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), self.total_len(rx)) |
| |
| # |
| # bring down pg2 expect LB to adjust to use only those that are up |
| # |
| self.pg2.link_down() |
| |
| rx = self.send_and_expect_load_balancing(self.pg0, src_pkts, |
| [self.pg3, self.pg4]) |
| self.assertEqual(len(src_pkts), self.total_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), self.total_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), self.total_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), self.total_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), self.total_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 IPPuntSetup(object): |
| """ Setup for IPv4 Punt Police/Redirect """ |
| |
| def punt_setup(self): |
| self.create_pg_interfaces(range(4)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip4() |
| i.resolve_arp() |
| |
| # 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) |
| |
| self.pkt = (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)) |
| |
| def punt_teardown(self): |
| for i in self.pg_interfaces: |
| i.unconfig_ip4() |
| i.admin_down() |
| |
| |
| class TestIPPunt(IPPuntSetup, VppTestCase): |
| """ IPv4 Punt Police/Redirect """ |
| |
| def setUp(self): |
| super(TestIPPunt, self).setUp() |
| super(TestIPPunt, self).punt_setup() |
| |
| def tearDown(self): |
| super(TestIPPunt, self).punt_teardown() |
| super(TestIPPunt, self).tearDown() |
| |
| def test_ip_punt(self): |
| """ IP punt police and redirect """ |
| |
| pkts = self.pkt * 1025 |
| |
| # |
| # Configure a punt redirect via pg1. |
| # |
| nh_addr = self.pg1.remote_ip4 |
| ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| |
| 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() |
| ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index) |
| ip_punt_policer.add_vpp_config() |
| |
| 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) |
| |
| stats = policer.get_stats() |
| |
| # Single rate policer - expect conform, violate but no exceed |
| self.assertGreater(stats['conform_packets'], 0) |
| self.assertEqual(stats['exceed_packets'], 0) |
| self.assertGreater(stats['violate_packets'], 0) |
| |
| self.assertGreater(len(rx), 0) |
| self.assertLess(len(rx), len(pkts)) |
| |
| # |
| # remove the policer. back to full rx |
| # |
| ip_punt_policer.remove_vpp_config() |
| policer.remove_vpp_config() |
| self.send_and_expect(self.pg0, pkts, self.pg1) |
| |
| # |
| # remove the redirect. expect full drop. |
| # |
| ip_punt_redirect.remove_vpp_config() |
| self.send_and_assert_no_replies(self.pg0, pkts, |
| "IP no punt config") |
| |
| # |
| # Add a redirect that is not input port selective |
| # |
| ip_punt_redirect = VppIpPuntRedirect(self, 0xffffffff, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| self.send_and_expect(self.pg0, pkts, self.pg1) |
| ip_punt_redirect.remove_vpp_config() |
| |
| def test_ip_punt_dump(self): |
| """ IP4 punt redirect dump""" |
| |
| # |
| # Configure a punt redirects |
| # |
| nh_address = self.pg3.remote_ip4 |
| ipr_03 = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg3.sw_if_index, nh_address) |
| ipr_13 = VppIpPuntRedirect(self, self.pg1.sw_if_index, |
| self.pg3.sw_if_index, nh_address) |
| ipr_23 = VppIpPuntRedirect(self, self.pg2.sw_if_index, |
| self.pg3.sw_if_index, "0.0.0.0") |
| ipr_03.add_vpp_config() |
| ipr_13.add_vpp_config() |
| ipr_23.add_vpp_config() |
| |
| # |
| # Dump pg0 punt redirects |
| # |
| self.assertTrue(ipr_03.query_vpp_config()) |
| self.assertTrue(ipr_13.query_vpp_config()) |
| self.assertTrue(ipr_23.query_vpp_config()) |
| |
| # |
| # 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 TestIPPuntHandoff(IPPuntSetup, VppTestCase): |
| """ IPv4 Punt Policer thread handoff """ |
| worker_config = "workers 2" |
| |
| def setUp(self): |
| super(TestIPPuntHandoff, self).setUp() |
| super(TestIPPuntHandoff, self).punt_setup() |
| |
| def tearDown(self): |
| super(TestIPPuntHandoff, self).punt_teardown() |
| super(TestIPPuntHandoff, self).tearDown() |
| |
| def test_ip_punt_policer_handoff(self): |
| """ IP4 punt policer thread handoff """ |
| pkts = self.pkt * NUM_PKTS |
| |
| # |
| # Configure a punt redirect via pg1. |
| # |
| nh_addr = self.pg1.remote_ip4 |
| ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| |
| action_tx = PolicerAction( |
| VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT, |
| 0) |
| # |
| # This policer drops no packets, we are just |
| # testing that they get to the right thread. |
| # |
| policer = VppPolicer(self, "ip4-punt", 400, 0, 10, 0, 1, |
| 0, 0, False, action_tx, action_tx, action_tx) |
| policer.add_vpp_config() |
| ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index) |
| ip_punt_policer.add_vpp_config() |
| |
| for worker in [0, 1]: |
| self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker) |
| if worker == 0: |
| self.logger.debug(self.vapi.cli("show trace max 100")) |
| |
| # Combined stats, all threads |
| stats = policer.get_stats() |
| |
| # Single rate policer - expect conform, violate but no exceed |
| self.assertGreater(stats['conform_packets'], 0) |
| self.assertEqual(stats['exceed_packets'], 0) |
| self.assertGreater(stats['violate_packets'], 0) |
| |
| # Worker 0, should have done all the policing |
| stats0 = policer.get_stats(worker=0) |
| self.assertEqual(stats, stats0) |
| |
| # Worker 1, should have handed everything off |
| stats1 = policer.get_stats(worker=1) |
| self.assertEqual(stats1['conform_packets'], 0) |
| self.assertEqual(stats1['exceed_packets'], 0) |
| self.assertEqual(stats1['violate_packets'], 0) |
| |
| # |
| # Clean up |
| # |
| ip_punt_policer.remove_vpp_config() |
| policer.remove_vpp_config() |
| ip_punt_redirect.remove_vpp_config() |
| |
| |
| 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 """ |
| |
| MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t |
| MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t |
| 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_API_ENTRY_FLAG_NONE, |
| [VppMRoutePath(self.pg0.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), |
| VppMRoutePath(self.pg1.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD), |
| VppMRoutePath(self.pg2.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD), |
| VppMRoutePath(self.pg3.sw_if_index, |
| MRouteItfFlags.MFIB_API_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 |
| r8 = VppIpRoute(self, "127.0.0.0", 8, |
| [VppRoutePath("127.0.0.1", |
| lo.sw_if_index)]).add_vpp_config() |
| r8.remove_vpp_config() |
| r8.add_vpp_config() |
| r8.remove_vpp_config() |
| |
| # remove the default route |
| r.remove_vpp_config() |
| |
| # remove the interface prefix |
| a.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) |