src/plugins/l3xc/test/test_l3xc.py

   1 #!/usr/bin/env python
   2
   3 from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
   4 import unittest
   5
   6 from framework import VppTestCase, VppTestRunner
   7 from vpp_ip import DpoProto
   8 from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsLabel, VppIpTable
   9
  10 from scapy.packet import Raw
  11 from scapy.layers.l2 import Ether
  12 from scapy.layers.inet import IP, UDP
  13 from scapy.layers.inet6 import IPv6
  14
  15 from vpp_object import VppObject
  16
  17 NUM_PKTS = 67
  18
  19
  20 def find_l3xc(test, sw_if_index, dump_sw_if_index=None):
  21     if not dump_sw_if_index:
  22         dump_sw_if_index = sw_if_index
  23     xcs = test.vapi.l3xc_dump(dump_sw_if_index)
  24     for xc in xcs:
  25         if sw_if_index == xc.l3xc.sw_if_index:
  26             return True
  27     return False
  28
  29
  30 class VppL3xc(VppObject):
  31
  32     def __init__(self,  test, intf, paths, is_ip6=False):
  33         self._test = test
  34         self.intf = intf
  35         self.is_ip6 = is_ip6
  36         self.paths = paths
  37         self.encoded_paths = []
  38         for path in self.paths:
  39             self.encoded_paths.append(path.encode())
  40
  41     def add_vpp_config(self):
  42         self._test.vapi.l3xc_update(
  43             l3xc={
  44                 'is_ip6': self.is_ip6,
  45                 'sw_if_index': self.intf.sw_if_index,
  46                 'n_paths': len(self.paths),
  47                 'paths': self.encoded_paths
  48             })
  49         self._test.registry.register(self, self._test.logger)
  50
  51     def remove_vpp_config(self):
  52         self._test.vapi.l3xc_del(
  53             is_ip6=self.is_ip6,
  54             sw_if_index=self.intf.sw_if_index)
  55
  56     def query_vpp_config(self):
  57         return find_l3xc(self._test, self.intf.sw_if_index)
  58
  59     def object_id(self):
  60         return ("l3xc-%d" % self.intf.sw_if_index)
  61
  62
  63 class TestL3xc(VppTestCase):
  64     """ L3XC Test Case """
  65
  66     @classmethod
  67     def setUpClass(cls):
  68         super(TestL3xc, cls).setUpClass()
  69
  70     @classmethod
  71     def tearDownClass(cls):
  72         super(TestL3xc, cls).tearDownClass()
  73
  74     def setUp(self):
  75         super(TestL3xc, self).setUp()
  76
  77         self.create_pg_interfaces(range(6))
  78
  79         for i in self.pg_interfaces:
  80             i.admin_up()
  81             i.config_ip4()
  82             i.resolve_arp()
  83             i.config_ip6()
  84             i.resolve_ndp()
  85
  86     def tearDown(self):
  87         for i in self.pg_interfaces:
  88             i.unconfig_ip4()
  89             i.unconfig_ip6()
  90             i.ip6_disable()
  91             i.admin_down()
  92         super(TestL3xc, self).tearDown()
  93
  94     def send_and_expect_load_balancing(self, input, pkts, outputs):
  95         self.pg_send(input, pkts)
  96         rxs = []
  97         for oo in outputs:
  98             rx = oo._get_capture(1)
  99             self.assertNotEqual(0, len(rx))
 100             for r in rx:
 101                 rxs.append(r)
 102         return rxs
 103
 104     def test_l3xc4(self):
 105         """ IPv4 X-Connect """
 106
 107         #
 108         # x-connect pg0 to pg1 and pg2 to pg3->5
 109         #
 110         l3xc_1 = VppL3xc(self, self.pg0,
 111                          [VppRoutePath(self.pg1.remote_ip4,
 112                                        self.pg1.sw_if_index)])
 113         l3xc_1.add_vpp_config()
 114         l3xc_2 = VppL3xc(self, self.pg2,
 115                          [VppRoutePath(self.pg3.remote_ip4,
 116                                        self.pg3.sw_if_index),
 117                           VppRoutePath(self.pg4.remote_ip4,
 118                                        self.pg4.sw_if_index),
 119                           VppRoutePath(self.pg5.remote_ip4,
 120                                        self.pg5.sw_if_index)])
 121         l3xc_2.add_vpp_config()
 122
 123         self.assertTrue(find_l3xc(self, self.pg2.sw_if_index, 0xffffffff))
 124
 125         self.logger.info(self.vapi.cli("sh l3xc"))
 126
 127         #
 128         # fire in packets. If it's forwarded then the L3XC was successful,
 129         # since default routing will drop it
 130         #
 131         p_1 = (Ether(src=self.pg0.remote_mac,
 132                      dst=self.pg0.local_mac) /
 133                IP(src="1.1.1.1", dst="1.1.1.2") /
 134                UDP(sport=1234, dport=1234) /
 135                Raw('\xa5' * 100))
 136         # self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg1)
 137
 138         p_2 = []
 139         for ii in range(NUM_PKTS):
 140             p_2.append(Ether(src=self.pg0.remote_mac,
 141                              dst=self.pg0.local_mac) /
 142                        IP(src="1.1.1.1", dst="1.1.1.2") /
 143                        UDP(sport=1000 + ii, dport=1234) /
 144                        Raw('\xa5' * 100))
 145         self.send_and_expect_load_balancing(self.pg2, p_2,
 146                                             [self.pg3, self.pg4, self.pg5])
 147
 148         l3xc_2.remove_vpp_config()
 149         self.send_and_assert_no_replies(self.pg2, p_2)
 150
 151
 152 if __name__ == '__main__':
 153     unittest.main(testRunner=VppTestRunner)