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-rw-r--r--test/test_ip4_irb.py83
1 files changed, 51 insertions, 32 deletions
diff --git a/test/test_ip4_irb.py b/test/test_ip4_irb.py
index 412575dbd3c..cf2bb150b90 100644
--- a/test/test_ip4_irb.py
+++ b/test/test_ip4_irb.py
@@ -1,39 +1,51 @@
#!/usr/bin/env python
+"""IRB Test Case HLD:
+
+**config**
+ - L2 MAC learning enabled in l2bd
+ - 2 routed interfaces untagged, bvi (Bridge Virtual Interface)
+ - 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
+
+"""
+
import unittest
-from random import choice, randint
+from random import choice
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 """
+ """IRB Test Case"""
@classmethod
def setUpClass(cls):
+ """
+ #. Create BD with MAC learning enabled and put interfaces to this BD.
+ #. Configure IPv4 addresses on loopback interface and routed interface.
+ #. Configure MAC address binding to IPv4 neighbors on loop0.
+ #. Configure MAC address on pg2.
+ #. Loopback BVI interface has remote hosts, one half of hosts are
+ behind pg0 second behind pg1.
+ """
super(TestIpIrb, cls).setUpClass()
cls.pg_if_packet_sizes = [64, 512, 1518, 9018] # packet sizes
@@ -58,27 +70,34 @@ class TestIpIrb(VppTestCase):
cls.vapi.sw_interface_set_l2_bridge(
cls.pg1.sw_if_index, bd_id=cls.bd_id)
+ # Configure IPv4 addresses on loopback interface and routed interface
cls.loop0.config_ip4()
cls.pg2.config_ip4()
- # configure MAC address binding to IPv4 neighbors on loop0
+ # 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()
+ cls.loop0.configure_ipv4_neighbors()
# configure MAC address on pg2
cls.pg2.resolve_arp()
- # one half of hosts are behind pg0 second behind pg1
+ # Loopback BVI interface has remote hosts, 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):
+ """Run standard test teardown and log ``show l2patch``,
+ ``show l2fib verbose``,``show bridge-domain <bd_id> detail``,
+ ``show ip arp``.
+ """
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"))
+ self.logger.info(self.vapi.cli("show l2patch"))
+ self.logger.info(self.vapi.cli("show l2fib verbose"))
+ self.logger.info(self.vapi.cli("show bridge-domain %s detail" %
+ self.bd_id))
+ self.logger.info(self.vapi.cli("show ip arp"))
def create_stream(self, src_ip_if, dst_ip_if, packet_sizes):
pkts = []
@@ -200,8 +219,8 @@ class TestIpIrb(VppTestCase):
""" 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
+ - ip traffic from pg2 interface must ends in both pg0 and pg1
+ - arp entry present in loop0 interface for destination IP
- no l2 entree configured, pg0 and pg1 are same
"""
@@ -224,7 +243,7 @@ class TestIpIrb(VppTestCase):
""" IPv4 IRB test 2
Test scenario:
- ip traffic from pg0 and pg1 ends on pg2
+ - ip traffic from pg0 and pg1 ends on pg2
"""
stream1 = self.create_stream_l2_to_ip(