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 TestL2LearnLimit(VppTestCase):
15 """ L2 Learn no limit Test Case """
19 super(TestL2LearnLimit, self).setUpClass()
20 self.create_pg_interfaces(range(3))
23 def tearDownClass(cls):
24 super(TestL2LearnLimit, 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
38 def mac(j): return "00:00:%02x:ff:%02x:%02x" % (subnet, swif, j)
40 def ip(j): return "172.%02u.1%02x.%u" % (subnet, swif, j)
42 def h(j): return Host(mac(j), ip(j))
43 hosts[swif] = [h(j) for j in range(n_hosts_per_if)]
47 def learn_hosts(self, pg_if, bd_id, hosts):
49 Create and send per interface L2 MAC broadcast packet stream to
50 let the bridge domain learn these MAC addresses.
52 :param int bd_id: BD to teach
53 :param dict hosts: dict of hosts per interface
56 self.vapi.bridge_flags(bd_id=bd_id, is_set=1, flags=1)
58 swif = pg_if.sw_if_index
59 packets = [Ether(dst="ff:ff:ff:ff:ff:ff", src=host.mac)
60 for host in hosts[swif]]
61 pg_if.add_stream(packets)
62 self.logger.info("Sending broadcast eth frames for MAC learning")
65 def test_l2bd_learnlimit(self):
66 """ L2BD test without learn Limit
68 hosts = self.create_hosts(self.pg_interfaces[0], 20, 1)
69 self.learn_hosts(self.pg_interfaces[0], 1, hosts)
70 lfs = self.vapi.l2_fib_table_dump(1)
72 # check that 20 macs are learned.
73 self.assertEqual(len(lfs), 20)
76 super(TestL2LearnLimit, self).setUp()
78 self.vapi.bridge_domain_add_del(bd_id=1)
79 self.vapi.bridge_domain_add_del(bd_id=2)
81 self.vapi.sw_interface_set_l2_bridge(
82 self.pg_interfaces[0].sw_if_index, bd_id=1)
83 self.vapi.sw_interface_set_l2_bridge(
84 self.pg_interfaces[1].sw_if_index, bd_id=2)
87 super(TestL2LearnLimit, self).tearDown()
88 self.vapi.sw_interface_set_l2_bridge(
89 rx_sw_if_index=self.pg_interfaces[0].sw_if_index,
91 self.vapi.sw_interface_set_l2_bridge(
92 rx_sw_if_index=self.pg_interfaces[1].sw_if_index,
94 self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
95 self.vapi.bridge_domain_add_del(bd_id=2, is_add=0)
98 if __name__ == '__main__':
99 unittest.main(testRunner=VppTestRunner)