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#!/usr/bin/env python
import unittest
import socket
from framework import VppTestCase, VppTestRunner
from vpp_ip_route import VppIpRoute, VppRoutePath
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP
class TestL2Flood(VppTestCase):
""" L2-flood """
def setUp(self):
super(TestL2Flood, self).setUp()
# 12 l2 interface and one l3
self.create_pg_interfaces(range(13))
self.create_loopback_interfaces(1)
for i in self.pg_interfaces:
i.admin_up()
for i in self.lo_interfaces:
i.admin_up()
self.pg12.config_ip4()
self.pg12.resolve_arp()
self.loop0.config_ip4()
def tearDown(self):
self.pg12.unconfig_ip4()
self.loop0.unconfig_ip4()
for i in self.pg_interfaces:
i.admin_down()
for i in self.lo_interfaces:
i.admin_down()
super(TestL2Flood, self).tearDown()
def test_flood(self):
""" L2 Flood Tests """
#
# Create a single bridge Domain
#
self.vapi.bridge_domain_add_del(1)
#
# add each interface to the BD. 3 interfaces per split horizon group
#
for i in self.pg_interfaces[0:4]:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 0)
for i in self.pg_interfaces[4:8]:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 1)
for i in self.pg_interfaces[8:12]:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2)
for i in self.lo_interfaces:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2, bvi=1)
p = (Ether(dst="ff:ff:ff:ff:ff:ff",
src="00:00:de:ad:be:ef") /
IP(src="10.10.10.10", dst="1.1.1.1") /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
#
# input on pg0 expect copies on pg1->11
# this is in SHG=0 so its flooded to all, expect the pg0 since that's
# the ingress link
#
self.pg0.add_stream(p*65)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:12]:
rx0 = i.get_capture(65, timeout=1)
self.logger.error(self.vapi.cli("sh trace"))
#
# input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0)
# and pg8->11 (SHG=2)
#
self.pg4.add_stream(p*65)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[:4]:
rx0 = i.get_capture(65, timeout=1)
for i in self.pg_interfaces[8:12]:
rx0 = i.get_capture(65, timeout=1)
for i in self.pg_interfaces[4:8]:
i.assert_nothing_captured(remark="Different SH group")
#
# An IP route so the packet that hits the BVI is sent out of pg12
#
ip_route = VppIpRoute(self, "1.1.1.1", 32,
[VppRoutePath(self.pg12.remote_ip4,
self.pg12.sw_if_index)])
ip_route.add_vpp_config()
self.logger.info(self.vapi.cli("sh bridge 1 detail"))
#
# input on pg0 expect copies on pg1->12
# this is in SHG=0 so its flooded to all, expect the pg0 since that's
# the ingress link
#
self.pg0.add_stream(p*65)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:]:
rx0 = i.get_capture(65, timeout=1)
#
# input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0)
# and pg8->12 (SHG=2)
#
self.pg4.add_stream(p*65)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[:4]:
rx0 = i.get_capture(65, timeout=1)
for i in self.pg_interfaces[8:13]:
rx0 = i.get_capture(65, timeout=1)
for i in self.pg_interfaces[4:8]:
i.assert_nothing_captured(remark="Different SH group")
#
# cleanup
#
for i in self.pg_interfaces[:12]:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, enable=0)
for i in self.lo_interfaces:
self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2,
bvi=1, enable=0)
self.vapi.bridge_domain_add_del(1, is_add=0)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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