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