6 from scapy.packet import Raw
7 from scapy.layers.l2 import Ether
8 from scapy.layers.inet import IP, UDP
10 from framework import VppTestCase, VppTestRunner
11 from util import Host, ppp
14 class TestL2LearnLimitBdEnable(VppTestCase):
15 """L2 Bridge Domain Learn limit Test Case"""
19 super(TestL2LearnLimitBdEnable, self).setUpClass()
20 self.create_pg_interfaces(range(3))
23 def tearDownClass(cls):
24 super(TestL2LearnLimitBdEnable, cls).tearDownClass()
26 def create_hosts(self, pg_if, n_hosts_per_if, subnet):
28 Create required number of host MAC addresses and distribute them among
29 interfaces. Create host IPv4 address for every host MAC address.
31 :param int n_hosts_per_if: Number of per interface hosts to
32 create MAC/IPv4 addresses for.
36 swif = pg_if.sw_if_index
39 return "00:00:%02x:ff:%02x:%02x" % (subnet, swif, j)
42 return "172.%02u.1%02x.%u" % (subnet, swif, j)
45 return Host(mac(j), ip(j))
47 hosts[swif] = [h(j) for j in range(n_hosts_per_if)]
51 def learn_hosts(self, pg_if, bd_id, hosts):
53 Create and send per interface L2 MAC broadcast packet stream to
54 let the bridge domain learn these MAC addresses.
56 :param int bd_id: BD to teach
57 :param dict hosts: dict of hosts per interface
60 self.vapi.bridge_flags(bd_id=bd_id, is_set=1, flags=1)
62 swif = pg_if.sw_if_index
63 packets = [Ether(dst="ff:ff:ff:ff:ff:ff", src=host.mac) for host in hosts[swif]]
64 pg_if.add_stream(packets)
65 self.logger.info("Sending broadcast eth frames for MAC learning")
68 def test_l2bd_learnlimit(self):
69 """L2BD test with bridge domain limit"""
70 self.vapi.want_l2_macs_events(enable_disable=1, learn_limit=1000)
71 self.vapi.bridge_domain_set_default_learn_limit(4)
72 self.vapi.bridge_domain_add_del_v2(
73 bd_id=3, is_add=1, flood=1, uu_flood=1, forward=1, learn=1
75 self.vapi.sw_interface_set_l2_bridge(self.pg_interfaces[2].sw_if_index, bd_id=3)
77 self.vapi.bridge_domain_set_learn_limit(2, 5)
79 hosts = self.create_hosts(self.pg_interfaces[1], 20, 2)
80 fhosts = self.create_hosts(self.pg_interfaces[2], 20, 3)
82 # inject 20 mac addresses on bd2
83 self.learn_hosts(self.pg_interfaces[1], 2, hosts)
85 # inject 20 macs address on bd3
86 self.learn_hosts(self.pg_interfaces[2], 3, fhosts)
88 lfs1 = self.vapi.l2_fib_table_dump(2)
89 lfs2 = self.vapi.l2_fib_table_dump(3)
91 # check that only 5 macs are learned.
92 self.assertEqual(len(lfs1), 5)
94 # check that only 4 macs are learned.
95 self.assertEqual(len(lfs2), 4)
97 self.vapi.sw_interface_set_l2_bridge(
98 rx_sw_if_index=self.pg_interfaces[2].sw_if_index, bd_id=3, enable=0
100 self.vapi.bridge_domain_add_del_v2(is_add=0, bd_id=3)
103 super(TestL2LearnLimitBdEnable, self).setUp()
105 self.vapi.bridge_domain_add_del_v2(
106 bd_id=1, is_add=1, flood=1, uu_flood=1, forward=1, learn=1
108 self.vapi.bridge_domain_add_del_v2(
109 bd_id=2, is_add=1, flood=1, uu_flood=1, forward=1, learn=1
112 self.vapi.sw_interface_set_l2_bridge(self.pg_interfaces[0].sw_if_index, bd_id=1)
113 self.vapi.sw_interface_set_l2_bridge(self.pg_interfaces[1].sw_if_index, bd_id=2)
116 super(TestL2LearnLimitBdEnable, self).tearDown()
117 self.vapi.sw_interface_set_l2_bridge(
118 rx_sw_if_index=self.pg_interfaces[0].sw_if_index, bd_id=1, enable=0
120 self.vapi.sw_interface_set_l2_bridge(
121 rx_sw_if_index=self.pg_interfaces[1].sw_if_index, bd_id=2, enable=0
123 self.vapi.bridge_domain_add_del_v2(bd_id=1, is_add=0)
124 self.vapi.bridge_domain_add_del_v2(bd_id=2, is_add=0)
127 if __name__ == "__main__":
128 unittest.main(testRunner=VppTestRunner)