0178d52384
- JIRA: CSIT-255 - create loopback interfaces - move pg-interface specific arp and neighbor discovery from vpp_interface to vpp_pg_interface - base configuration of IRB tests - IP test scenario Change-Id: I9945a188163652a4e22325877aef008c4d029557 Signed-off-by: Matej Klotton <mklotton@cisco.com>
248 lines
8.3 KiB
Python
248 lines
8.3 KiB
Python
#!/usr/bin/env python
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import unittest
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from random import choice, randint
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether
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from scapy.layers.inet import IP, UDP
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from logging import *
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from framework import VppTestCase, VppTestRunner
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""" IRB Test Case
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config
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L2 MAC learning enabled in l2bd
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2 routed interfaces untagged, bvi
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2 bridged interfaces in l2bd with bvi
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test
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sending ip4 eth pkts between routed interfaces
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2 routed interfaces
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2 bridged interfaces
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64B, 512B, 1518B, 9200B (ether_size)
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burst of pkts per interface
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257pkts per burst
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routed pkts hitting different FIB entries
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bridged pkts hitting different MAC entries
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verify
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all packets received correctly
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"""
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class TestIpIrb(VppTestCase):
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""" IRB Test Case """
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@classmethod
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def setUpClass(cls):
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super(TestIpIrb, cls).setUpClass()
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cls.pg_if_packet_sizes = [64, 512, 1518, 9018] # packet sizes
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cls.bd_id = 10
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cls.remote_hosts_count = 250
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# create 3 pg interfaces, 1 loopback interface
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cls.create_pg_interfaces(range(3))
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cls.create_loopback_interfaces(range(1))
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cls.interfaces = list(cls.pg_interfaces)
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cls.interfaces.extend(cls.lo_interfaces)
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for i in cls.interfaces:
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i.admin_up()
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# Create BD with MAC learning enabled and put interfaces to this BD
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cls.vapi.sw_interface_set_l2_bridge(
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cls.loop0.sw_if_index, bd_id=cls.bd_id, bvi=1)
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cls.vapi.sw_interface_set_l2_bridge(
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cls.pg0.sw_if_index, bd_id=cls.bd_id)
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cls.vapi.sw_interface_set_l2_bridge(
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cls.pg1.sw_if_index, bd_id=cls.bd_id)
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cls.loop0.config_ip4()
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cls.pg2.config_ip4()
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# configure MAC address binding to IPv4 neighbors on loop0
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cls.loop0.generate_remote_hosts(cls.remote_hosts_count)
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cls.loop0.configure_extend_ipv4_mac_binding()
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# configure MAC address on pg2
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cls.pg2.resolve_arp()
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# one half of hosts are behind pg0 second behind pg1
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half = cls.remote_hosts_count // 2
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cls.pg0.remote_hosts = cls.loop0.remote_hosts[:half]
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cls.pg1.remote_hosts = cls.loop0.remote_hosts[half:]
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def tearDown(self):
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super(TestIpIrb, self).tearDown()
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if not self.vpp_dead:
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info(self.vapi.cli("show l2patch"))
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info(self.vapi.cli("show l2fib verbose"))
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info(self.vapi.cli("show bridge-domain %s detail" % self.bd_id))
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info(self.vapi.cli("show ip arp"))
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def create_stream(self, src_ip_if, dst_ip_if, packet_sizes):
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pkts = []
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for i in range(0, 257):
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remote_dst_host = choice(dst_ip_if.remote_hosts)
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info = self.create_packet_info(
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src_ip_if.sw_if_index, dst_ip_if.sw_if_index)
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payload = self.info_to_payload(info)
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p = (Ether(dst=src_ip_if.local_mac, src=src_ip_if.remote_mac) /
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IP(src=src_ip_if.remote_ip4,
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dst=remote_dst_host.ip4) /
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UDP(sport=1234, dport=1234) /
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Raw(payload))
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info.data = p.copy()
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size = packet_sizes[(i // 2) % len(packet_sizes)]
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self.extend_packet(p, size)
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pkts.append(p)
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return pkts
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def create_stream_l2_to_ip(self, src_l2_if, src_ip_if, dst_ip_if,
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packet_sizes):
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pkts = []
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for i in range(0, 257):
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info = self.create_packet_info(
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src_ip_if.sw_if_index, dst_ip_if.sw_if_index)
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payload = self.info_to_payload(info)
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host = choice(src_l2_if.remote_hosts)
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p = (Ether(src=host.mac,
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dst = src_ip_if.local_mac) /
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IP(src=host.ip4,
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dst=dst_ip_if.remote_ip4) /
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UDP(sport=1234, dport=1234) /
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Raw(payload))
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info.data = p.copy()
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size = packet_sizes[(i // 2) % len(packet_sizes)]
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self.extend_packet(p, size)
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pkts.append(p)
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return pkts
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def verify_capture_l2_to_ip(self, dst_ip_if, src_ip_if, capture):
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last_info = dict()
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for i in self.interfaces:
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last_info[i.sw_if_index] = None
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dst_ip_sw_if_index = dst_ip_if.sw_if_index
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for packet in capture:
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ip = packet[IP]
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udp = packet[IP][UDP]
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payload_info = self.payload_to_info(str(packet[IP][UDP][Raw]))
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packet_index = payload_info.index
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self.assertEqual(payload_info.dst, dst_ip_sw_if_index)
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next_info = self.get_next_packet_info_for_interface2(
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payload_info.src, dst_ip_sw_if_index,
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last_info[payload_info.src])
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last_info[payload_info.src] = next_info
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self.assertTrue(next_info is not None)
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saved_packet = next_info.data
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self.assertTrue(next_info is not None)
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# MAC: src, dst
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self.assertEqual(packet.src, dst_ip_if.local_mac)
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self.assertEqual(packet.dst, dst_ip_if.remote_mac)
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# IP: src, dst
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host = src_ip_if.host_by_ip4(ip.src)
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self.assertIsNotNone(host)
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self.assertEqual(ip.dst, saved_packet[IP].dst)
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self.assertEqual(ip.dst, dst_ip_if.remote_ip4)
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# UDP:
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self.assertEqual(udp.sport, saved_packet[UDP].sport)
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self.assertEqual(udp.dport, saved_packet[UDP].dport)
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def verify_capture(self, dst_ip_if, src_ip_if, capture):
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last_info = dict()
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for i in self.interfaces:
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last_info[i.sw_if_index] = None
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dst_ip_sw_if_index = dst_ip_if.sw_if_index
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for packet in capture:
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ip = packet[IP]
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udp = packet[IP][UDP]
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payload_info = self.payload_to_info(str(packet[IP][UDP][Raw]))
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packet_index = payload_info.index
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self.assertEqual(payload_info.dst, dst_ip_sw_if_index)
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next_info = self.get_next_packet_info_for_interface2(
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payload_info.src, dst_ip_sw_if_index,
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last_info[payload_info.src])
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last_info[payload_info.src] = next_info
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self.assertTrue(next_info is not None)
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self.assertEqual(packet_index, next_info.index)
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saved_packet = next_info.data
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self.assertTrue(next_info is not None)
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# MAC: src, dst
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self.assertEqual(packet.src, dst_ip_if.local_mac)
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host = dst_ip_if.host_by_mac(packet.dst)
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# IP: src, dst
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self.assertEqual(ip.src, src_ip_if.remote_ip4)
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self.assertEqual(ip.dst, saved_packet[IP].dst)
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self.assertEqual(ip.dst, host.ip4)
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# UDP:
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self.assertEqual(udp.sport, saved_packet[UDP].sport)
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self.assertEqual(udp.dport, saved_packet[UDP].dport)
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def test_ip4_irb_1(self):
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""" IPv4 IRB test 1
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Test scenario:
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ip traffic from pg2 interface must ends in both pg0 and pg1
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- arp entry present in loop0 interface for dst IP
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- no l2 entree configured, pg0 and pg1 are same
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"""
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stream = self.create_stream(
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self.pg2, self.loop0, self.pg_if_packet_sizes)
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self.pg2.add_stream(stream)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rcvd1 = self.pg0.get_capture()
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rcvd2 = self.pg1.get_capture()
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self.verify_capture(self.loop0, self.pg2, rcvd1)
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self.verify_capture(self.loop0, self.pg2, rcvd2)
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self.assertListEqual(rcvd1.res, rcvd2.res)
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def test_ip4_irb_2(self):
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""" IPv4 IRB test 2
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Test scenario:
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ip traffic from pg0 and pg1 ends on pg2
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"""
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stream1 = self.create_stream_l2_to_ip(
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self.pg0, self.loop0, self.pg2, self.pg_if_packet_sizes)
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stream2 = self.create_stream_l2_to_ip(
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self.pg1, self.loop0, self.pg2, self.pg_if_packet_sizes)
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self.pg0.add_stream(stream1)
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self.pg1.add_stream(stream2)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rcvd = self.pg2.get_capture()
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self.verify_capture_l2_to_ip(self.pg2, self.loop0, rcvd)
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self.assertEqual(len(stream1) + len(stream2), len(rcvd.res))
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if __name__ == '__main__':
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unittest.main(testRunner=VppTestRunner)
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