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 TestL2LearnLimitEnable(VppTestCase):
15 """L2 Global Learn limit Test Case"""
19 super(TestL2LearnLimitEnable, self).setUpClass()
20 self.create_pg_interfaces(range(3))
23 def tearDownClass(cls):
24 super(TestL2LearnLimitEnable, 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_learnlimit01(self):
69 """L2BD test with learn Limit"""
70 self.vapi.want_l2_macs_events(enable_disable=1, learn_limit=10)
71 hosts = self.create_hosts(self.pg_interfaces[0], 20, 1)
72 fhosts = self.create_hosts(self.pg_interfaces[1], 1, 2)
74 # inject 20 mac addresses on bd1
75 self.learn_hosts(self.pg_interfaces[0], 1, hosts)
77 # inject 1 mac address on bd2
78 self.learn_hosts(self.pg_interfaces[1], 2, fhosts)
80 lfs1 = self.vapi.l2_fib_table_dump(1)
81 lfs2 = self.vapi.l2_fib_table_dump(2)
83 # check that only 10 macs are learned.
84 self.assertEqual(len(lfs1), 10)
86 # check that bd2 was not able to learn
87 self.assertEqual(len(lfs2), 0)
90 super(TestL2LearnLimitEnable, self).setUp()
92 self.vapi.bridge_domain_add_del(bd_id=1)
93 self.vapi.bridge_domain_add_del(bd_id=2)
95 self.vapi.sw_interface_set_l2_bridge(self.pg_interfaces[0].sw_if_index, bd_id=1)
96 self.vapi.sw_interface_set_l2_bridge(self.pg_interfaces[1].sw_if_index, bd_id=2)
99 super(TestL2LearnLimitEnable, self).tearDown()
100 self.vapi.sw_interface_set_l2_bridge(
101 rx_sw_if_index=self.pg_interfaces[0].sw_if_index, bd_id=1, enable=0
103 self.vapi.sw_interface_set_l2_bridge(
104 rx_sw_if_index=self.pg_interfaces[1].sw_if_index, bd_id=2, enable=0
106 self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
107 self.vapi.bridge_domain_add_del(bd_id=2, is_add=0)
110 if __name__ == "__main__":
111 unittest.main(testRunner=VppTestRunner)