aboutsummaryrefslogtreecommitdiffstats
path: root/test/test_dvr.py
blob: 03c23ac1d0337959b376c75a38c2bc3fe3b89c67 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
#!/usr/bin/env python
import random
import socket
import unittest

from framework import VppTestCase, VppTestRunner
from vpp_sub_interface import VppSubInterface, VppDot1QSubint
from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
from vpp_papi_provider import L2_VTR_OP

from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q, ARP
from scapy.layers.inet import IP, UDP
from util import ppp


class TestDVR(VppTestCase):
    """ IPv4 Load-Balancing """

    def setUp(self):
        super(TestDVR, self).setUp()

        self.create_pg_interfaces(range(4))
        self.create_loopback_interfaces(range(1))

        for i in self.pg_interfaces:
            i.admin_up()

        self.loop0.config_ip4()

    def tearDown(self):
        for i in self.pg_interfaces:
            i.admin_down()
        self.loop0.unconfig_ip4()

        super(TestDVR, self).tearDown()

    def test_dvr(self):
        """ Distributed Virtual Router """

        #
        # A packet destined to an IP address that is L2 bridged via
        # a non-tag interface
        #
        ip_non_tag_bridged = "10.10.10.10"
        ip_tag_bridged = "10.10.10.11"
        any_src_addr = "1.1.1.1"

        pkt_no_tag = (Ether(src=self.pg0.remote_mac,
                            dst=self.loop0.local_mac) /
                      IP(src=any_src_addr,
                         dst=ip_non_tag_bridged) /
                      UDP(sport=1234, dport=1234) /
                      Raw('\xa5' * 100))
        pkt_tag = (Ether(src=self.pg0.remote_mac,
                         dst=self.loop0.local_mac) /
                   IP(src=any_src_addr,
                      dst=ip_tag_bridged) /
                   UDP(sport=1234, dport=1234) /
                   Raw('\xa5' * 100))

        #
        # Two sub-interfaces so we can test VLAN tag push/pop
        #
        sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
        sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
        sub_if_on_pg2.admin_up()
        sub_if_on_pg3.admin_up()

        #
        # Put all the interfaces into a new bridge domain
        #
        self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
        self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
        self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
        self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
        self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1)

        self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
                                                  L2_VTR_OP.L2_POP_1,
                                                  92)
        self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
                                                  L2_VTR_OP.L2_POP_1,
                                                  93)

        #
        # Add routes to bridge the traffic via a tagged an nontagged interface
        #
        route_no_tag = VppIpRoute(
            self, ip_non_tag_bridged, 32,
            [VppRoutePath("0.0.0.0",
                          self.pg1.sw_if_index,
                          proto=DpoProto.DPO_PROTO_ETHERNET)])
        route_no_tag.add_vpp_config()

        #
        # Inject the packet that arrives and leaves on a non-tagged interface
        # Since it's 'bridged' expect that the MAC headed is unchanged.
        #
        self.pg0.add_stream(pkt_no_tag)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx = self.pg1.get_capture(1)

        self.assertEqual(rx[0][Ether].dst, pkt_no_tag[Ether].dst)
        self.assertEqual(rx[0][Ether].src, pkt_no_tag[Ether].src)

        #
        # Add routes to bridge the traffic via a tagged interface
        #
        route_no_tag = VppIpRoute(
            self, ip_tag_bridged, 32,
            [VppRoutePath("0.0.0.0",
                          sub_if_on_pg3.sw_if_index,
                          proto=DpoProto.DPO_PROTO_ETHERNET)])
        route_no_tag.add_vpp_config()

        #
        # Inject the packet that arrives and leaves on a non-tagged interface
        # Since it's 'bridged' expect that the MAC headed is unchanged.
        #
        self.pg0.add_stream(pkt_tag)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx = self.pg3.get_capture(1)

        self.assertEqual(rx[0][Ether].dst, pkt_tag[Ether].dst)
        self.assertEqual(rx[0][Ether].src, pkt_tag[Ether].src)
        self.assertEqual(rx[0][Dot1Q].vlan, 93)

        #
        # Tag to tag
        #
        pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
                                dst=self.loop0.local_mac) /
                          Dot1Q(vlan=92) /
                          IP(src=any_src_addr,
                             dst=ip_tag_bridged) /
                          UDP(sport=1234, dport=1234) /
                          Raw('\xa5' * 100))

        self.pg2.add_stream(pkt_tag_to_tag)
        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()
        rx = self.pg3.get_capture(1)

        self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst)
        self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src)
        self.assertEqual(rx[0][Dot1Q].vlan, 93)

        #
        # Tag to non-Tag
        #
        pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
                                    dst=self.loop0.local_mac) /
                              Dot1Q(vlan=92) /
                              IP(src=any_src_addr,
                                 dst=ip_non_tag_bridged) /
                              UDP(sport=1234, dport=1234) /
                              Raw('\xa5' * 100))

        self.pg2.add_stream(pkt_tag_to_non_tag)
        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()
        rx = self.pg1.get_capture(1)

        self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst)
        self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src)
        self.assertFalse(rx[0].haslayer(Dot1Q))

if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)