5f93e3b7f8
Type: feature Signed-off-by: Jerome Tollet <jtollet@cisco.com> Change-Id: I57ed6699050445d9c9aec98eff3aab56735aca54 Signed-off-by: Jerome Tollet <jtollet@cisco.com>
161 lines
5.1 KiB
Python
161 lines
5.1 KiB
Python
#!/usr/bin/env python3
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import unittest
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import random
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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 framework import VppTestCase, VppTestRunner, running_extended_tests
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from util import Host, ppp
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class TestL2LearnLimit(VppTestCase):
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""" L2 Learn limit Test Case """
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@classmethod
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def setUpClass(self):
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super(TestL2LearnLimit, self).setUpClass()
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self.create_pg_interfaces(range(3))
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@classmethod
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def tearDownClass(cls):
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super(TestL2LearnLimit, cls).tearDownClass()
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def create_hosts(self, pg_if, n_hosts_per_if, subnet):
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"""
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Create required number of host MAC addresses and distribute them among
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interfaces. Create host IPv4 address for every host MAC address.
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:param int n_hosts_per_if: Number of per interface hosts to
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create MAC/IPv4 addresses for.
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"""
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hosts = dict()
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swif = pg_if.sw_if_index
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def mac(j): return "00:00:%02x:ff:%02x:%02x" % (subnet, swif, j)
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def ip(j): return "172.%02u.1%02x.%u" % (subnet, swif, j)
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def h(j): return Host(mac(j), ip(j))
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hosts[swif] = [h(j) for j in range(n_hosts_per_if)]
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return hosts
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def learn_hosts(self, pg_if, bd_id, hosts):
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"""
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Create and send per interface L2 MAC broadcast packet stream to
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let the bridge domain learn these MAC addresses.
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:param int bd_id: BD to teach
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:param dict hosts: dict of hosts per interface
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"""
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self.vapi.bridge_flags(bd_id=bd_id, is_set=1, flags=1)
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swif = pg_if.sw_if_index
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packets = [Ether(dst="ff:ff:ff:ff:ff:ff", src=host.mac)
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for host in hosts[swif]]
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pg_if.add_stream(packets)
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self.logger.info("Sending broadcast eth frames for MAC learning")
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self.pg_start()
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def test_l2bd_learnlimit01(self):
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""" L2BD test without learn Limit
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"""
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hosts = self.create_hosts(self.pg_interfaces[0], 20, 1)
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self.learn_hosts(self.pg_interfaces[0], 1, hosts)
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lfs = self.vapi.l2_fib_table_dump(1)
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# check that 20 macs are learned.
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self.assertEqual(len(lfs), 20)
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def test_l2bd_learnlimit02(self):
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""" L2BD test with learn Limit
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"""
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self.vapi.want_l2_macs_events(enable_disable=1, learn_limit=10)
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hosts = self.create_hosts(self.pg_interfaces[0], 20, 1)
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fhosts = self.create_hosts(self.pg_interfaces[1], 1, 2)
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# inject 20 mac addresses on bd1
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self.learn_hosts(self.pg_interfaces[0], 1, hosts)
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# inject 1 mac address on bd2
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self.learn_hosts(self.pg_interfaces[1], 2, fhosts)
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lfs1 = self.vapi.l2_fib_table_dump(1)
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lfs2 = self.vapi.l2_fib_table_dump(2)
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# check that only 10 macs are learned.
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self.assertEqual(len(lfs1), 10)
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# check that bd2 was not able to learn
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self.assertEqual(len(lfs2), 0)
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def test_l2bd_learnlimit03(self):
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""" L2BD test with bridge domain limit
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"""
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self.vapi.bridge_domain_set_default_learn_limit(4)
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self.vapi.bridge_domain_add_del(bd_id=3)
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self.vapi.sw_interface_set_l2_bridge(
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self.pg_interfaces[2].sw_if_index, bd_id=3)
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self.vapi.bridge_domain_set_learn_limit(2, 5)
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hosts = self.create_hosts(self.pg_interfaces[1], 20, 2)
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fhosts = self.create_hosts(self.pg_interfaces[2], 20, 3)
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# inject 20 mac addresses on bd2
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self.learn_hosts(self.pg_interfaces[1], 2, hosts)
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# inject 20 macs address on bd3
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self.learn_hosts(self.pg_interfaces[2], 3, fhosts)
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lfs1 = self.vapi.l2_fib_table_dump(2)
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lfs2 = self.vapi.l2_fib_table_dump(3)
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# check that only 5 macs are learned.
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self.assertEqual(len(lfs1), 5)
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# check that only 4 macs are learned.
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self.assertEqual(len(lfs2), 4)
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self.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=self.pg_interfaces[2].sw_if_index,
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bd_id=3, enable=0)
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self.vapi.bridge_domain_add_del(is_add=0, bd_id=3)
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def setUp(self):
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super(TestL2LearnLimit, self).setUp()
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self.vapi.bridge_domain_add_del(bd_id=1)
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self.vapi.bridge_domain_add_del(bd_id=2)
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self.vapi.sw_interface_set_l2_bridge(
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self.pg_interfaces[0].sw_if_index, bd_id=1)
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self.vapi.sw_interface_set_l2_bridge(
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self.pg_interfaces[1].sw_if_index, bd_id=2)
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def tearDown(self):
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super(TestL2LearnLimit, self).tearDown()
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self.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=self.pg_interfaces[0].sw_if_index,
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bd_id=1, enable=0)
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self.vapi.sw_interface_set_l2_bridge(
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rx_sw_if_index=self.pg_interfaces[1].sw_if_index,
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bd_id=2, enable=0)
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self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
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self.vapi.bridge_domain_add_del(bd_id=2, is_add=0)
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i = 0
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while (len(self.vapi.l2_fib_table_dump(bd_id=0xffffffff)) != 0):
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time.sleep(1)
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i = i + 1
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if i == 30:
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self.assertTrue(False)
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if __name__ == '__main__':
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unittest.main(testRunner=VppTestRunner)
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