6 from framework import VppTestCase, VppTestRunner
7 from vpp_sub_interface import VppSubInterface, VppDot1QSubint
8 from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
9 from vpp_papi_provider import L2_VTR_OP
11 from scapy.packet import Raw
12 from scapy.layers.l2 import Ether, Dot1Q, ARP
13 from scapy.layers.inet import IP, UDP
17 class TestDVR(VppTestCase):
18 """ IPv4 Load-Balancing """
21 super(TestDVR, self).setUp()
23 self.create_pg_interfaces(range(4))
24 self.create_loopback_interfaces(range(1))
26 for i in self.pg_interfaces:
29 self.loop0.config_ip4()
32 for i in self.pg_interfaces:
34 self.loop0.unconfig_ip4()
36 super(TestDVR, self).tearDown()
39 """ Distributed Virtual Router """
42 # A packet destined to an IP address that is L2 bridged via
45 ip_non_tag_bridged = "10.10.10.10"
46 ip_tag_bridged = "10.10.10.11"
47 any_src_addr = "1.1.1.1"
49 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
50 dst=self.loop0.local_mac) /
52 dst=ip_non_tag_bridged) /
53 UDP(sport=1234, dport=1234) /
55 pkt_tag = (Ether(src=self.pg0.remote_mac,
56 dst=self.loop0.local_mac) /
59 UDP(sport=1234, dport=1234) /
63 # Two sub-interfaces so we can test VLAN tag push/pop
65 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
66 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
67 sub_if_on_pg2.admin_up()
68 sub_if_on_pg3.admin_up()
71 # Put all the interfaces into a new bridge domain
73 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
74 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
75 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
76 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
77 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1)
79 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
82 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
86 self.logger.error(self.vapi.ppcli("show bridge-domain 1 detail"))
89 # Add routes to bridge the traffic via a tagged an nontagged interface
91 route_no_tag = VppIpRoute(
92 self, ip_non_tag_bridged, 32,
93 [VppRoutePath("0.0.0.0",
95 proto=DpoProto.DPO_PROTO_ETHERNET)])
96 route_no_tag.add_vpp_config()
99 # Inject the packet that arrives and leaves on a non-tagged interface
100 # Since it's 'bridged' expect that the MAC headed is unchanged.
102 self.pg0.add_stream(pkt_no_tag)
104 self.pg_enable_capture(self.pg_interfaces)
107 rx = self.pg1.get_capture(1)
109 self.assertEqual(rx[0][Ether].dst, pkt_no_tag[Ether].dst)
110 self.assertEqual(rx[0][Ether].src, pkt_no_tag[Ether].src)
113 # Add routes to bridge the traffic via a tagged interface
115 route_no_tag = VppIpRoute(
116 self, ip_tag_bridged, 32,
117 [VppRoutePath("0.0.0.0",
118 sub_if_on_pg3.sw_if_index,
119 proto=DpoProto.DPO_PROTO_ETHERNET)])
120 route_no_tag.add_vpp_config()
123 # Inject the packet that arrives and leaves on a non-tagged interface
124 # Since it's 'bridged' expect that the MAC headed is unchanged.
126 self.pg0.add_stream(pkt_tag)
128 self.pg_enable_capture(self.pg_interfaces)
131 rx = self.pg3.get_capture(1)
133 self.assertEqual(rx[0][Ether].dst, pkt_tag[Ether].dst)
134 self.assertEqual(rx[0][Ether].src, pkt_tag[Ether].src)
135 self.assertEqual(rx[0][Dot1Q].vlan, 93)
140 pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
141 dst=self.loop0.local_mac) /
144 dst=ip_tag_bridged) /
145 UDP(sport=1234, dport=1234) /
148 self.pg2.add_stream(pkt_tag_to_tag)
149 self.pg_enable_capture(self.pg_interfaces)
151 rx = self.pg3.get_capture(1)
153 self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst)
154 self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src)
155 self.assertEqual(rx[0][Dot1Q].vlan, 93)
160 pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
161 dst=self.loop0.local_mac) /
164 dst=ip_non_tag_bridged) /
165 UDP(sport=1234, dport=1234) /
168 self.pg2.add_stream(pkt_tag_to_non_tag)
169 self.pg_enable_capture(self.pg_interfaces)
171 rx = self.pg1.get_capture(1)
173 self.assertEqual(rx[0][Ether].dst, pkt_tag_to_tag[Ether].dst)
174 self.assertEqual(rx[0][Ether].src, pkt_tag_to_tag[Ether].src)
175 self.assertFalse(rx[0].haslayer(Dot1Q))
177 if __name__ == '__main__':
178 unittest.main(testRunner=VppTestRunner)