test/test_l3xc.py

   1 #!/usr/bin/env python3
   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     def __init__(self, test, intf, paths, is_ip6=False):
  32         self._test = test
  33         self.intf = intf
  34         self.is_ip6 = is_ip6
  35         self.paths = paths
  36         self.encoded_paths = []
  37         for path in self.paths:
  38             self.encoded_paths.append(path.encode())
  39
  40     def add_vpp_config(self):
  41         self._test.vapi.l3xc_update(
  42             l3xc={
  43                 "is_ip6": self.is_ip6,
  44                 "sw_if_index": self.intf.sw_if_index,
  45                 "n_paths": len(self.paths),
  46                 "paths": self.encoded_paths,
  47             }
  48         )
  49         self._test.registry.register(self, self._test.logger)
  50
  51     def remove_vpp_config(self):
  52         self._test.vapi.l3xc_del(is_ip6=self.is_ip6, sw_if_index=self.intf.sw_if_index)
  53
  54     def query_vpp_config(self):
  55         return find_l3xc(self._test, self.intf.sw_if_index)
  56
  57     def object_id(self):
  58         return "l3xc-%d" % self.intf.sw_if_index
  59
  60
  61 class TestL3xc(VppTestCase):
  62     """L3XC Test Case"""
  63
  64     @classmethod
  65     def setUpClass(cls):
  66         super(TestL3xc, cls).setUpClass()
  67
  68     @classmethod
  69     def tearDownClass(cls):
  70         super(TestL3xc, cls).tearDownClass()
  71
  72     def setUp(self):
  73         super(TestL3xc, self).setUp()
  74
  75         self.create_pg_interfaces(range(6))
  76
  77         for i in self.pg_interfaces:
  78             i.admin_up()
  79             i.config_ip4()
  80             i.resolve_arp()
  81             i.config_ip6()
  82             i.resolve_ndp()
  83
  84     def tearDown(self):
  85         for i in self.pg_interfaces:
  86             i.unconfig_ip4()
  87             i.unconfig_ip6()
  88             i.admin_down()
  89         super(TestL3xc, self).tearDown()
  90
  91     def test_l3xc4(self):
  92         """IPv4 X-Connect"""
  93
  94         #
  95         # x-connect pg0 to pg1 and pg2 to pg3->5
  96         #
  97         l3xc_1 = VppL3xc(
  98             self, self.pg0, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]
  99         )
 100         l3xc_1.add_vpp_config()
 101         l3xc_2 = VppL3xc(
 102             self,
 103             self.pg2,
 104             [
 105                 VppRoutePath(self.pg3.remote_ip4, self.pg3.sw_if_index),
 106                 VppRoutePath(self.pg4.remote_ip4, self.pg4.sw_if_index),
 107                 VppRoutePath(self.pg5.remote_ip4, self.pg5.sw_if_index),
 108             ],
 109         )
 110         l3xc_2.add_vpp_config()
 111
 112         self.assertTrue(find_l3xc(self, self.pg2.sw_if_index, 0xFFFFFFFF))
 113
 114         self.logger.info(self.vapi.cli("sh l3xc"))
 115
 116         #
 117         # fire in packets. If it's forwarded then the L3XC was successful,
 118         # since default routing will drop it
 119         #
 120         p_1 = (
 121             Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 122             / IP(src="1.1.1.1", dst="1.1.1.2")
 123             / UDP(sport=1234, dport=1234)
 124             / Raw(b"\xa5" * 100)
 125         )
 126         # self.send_and_expect(self.pg0, p_1*NUM_PKTS, self.pg1)
 127
 128         p_2 = []
 129         for ii in range(NUM_PKTS):
 130             p_2.append(
 131                 Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 132                 / IP(src="1.1.1.1", dst="1.1.1.2")
 133                 / UDP(sport=1000 + ii, dport=1234)
 134                 / Raw(b"\xa5" * 100)
 135             )
 136         self.send_and_expect_load_balancing(
 137             self.pg2, p_2, [self.pg3, self.pg4, self.pg5]
 138         )
 139
 140         l3xc_2.remove_vpp_config()
 141         self.send_and_assert_no_replies(self.pg2, p_2)
 142
 143
 144 if __name__ == "__main__":
 145     unittest.main(testRunner=VppTestRunner)