5 from framework import VppTestCase, VppTestRunner
6 from template_bd import BridgeDomain
8 from scapy.layers.l2 import Ether
9 from scapy.packet import Raw
10 from scapy.layers.inet6 import IP, IPv6, UDP
11 from scapy.layers.vxlan import VXLAN
14 from vpp_ip_route import VppIpRoute, VppRoutePath
15 from vpp_vxlan_tunnel import VppVxlanTunnel
16 from vpp_ip import INVALID_INDEX
19 class TestVxlan6(BridgeDomain, VppTestCase):
20 """ VXLAN over IPv6 Test Case """
22 def __init__(self, *args):
23 BridgeDomain.__init__(self)
24 VppTestCase.__init__(self, *args)
26 def encapsulate(self, pkt, vni):
28 Encapsulate the original payload frame by adding VXLAN header with its
29 UDP, IP and Ethernet fields
31 return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
32 IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
33 UDP(sport=self.dport, dport=self.dport, chksum=0) /
34 VXLAN(vni=vni, flags=self.flags) /
38 def ip_range(cls, s, e):
39 """ range of remote ip's """
40 tmp = cls.pg0.remote_ip6.rsplit(':', 1)[0]
41 return ("%s:%x" % (tmp, i) for i in range(s, e))
43 def encap_mcast(self, pkt, src_ip, src_mac, vni):
45 Encapsulate the original payload frame by adding VXLAN header with its
46 UDP, IP and Ethernet fields
48 return (Ether(src=src_mac, dst=self.mcast_mac) /
49 IPv6(src=src_ip, dst=self.mcast_ip6) /
50 UDP(sport=self.dport, dport=self.dport, chksum=0) /
51 VXLAN(vni=vni, flags=self.flags) /
54 def decapsulate(self, pkt):
56 Decapsulate the original payload frame by removing VXLAN header
58 # check if is set I flag
59 self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
60 return pkt[VXLAN].payload
62 # Method for checking VXLAN encapsulation.
64 def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
65 # TODO: add error messages
66 # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
68 self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
71 self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
73 self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
74 # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
75 self.assertEqual(pkt[IPv6].src, self.pg0.local_ip6)
78 self.assertEqual(pkt[IPv6].dst, self.pg0.remote_ip6)
80 self.assertEqual(pkt[IPv6].dst, type(self).mcast_ip6)
81 # Verify UDP destination port is VXLAN 4789, source UDP port could be
83 self.assertEqual(pkt[UDP].dport, type(self).dport)
85 self.assert_udp_checksum_valid(pkt, ignore_zero_checksum=False)
87 self.assertEqual(pkt[VXLAN].vni, vni)
90 def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels):
91 # Create 10 ucast vxlan tunnels under bd
93 end = start + n_ucast_tunnels
94 for dest_ip6 in cls.ip_range(start, end):
95 # add host route so dest ip will not be resolved
96 rip = VppIpRoute(cls, dest_ip6, 128,
97 [VppRoutePath(cls.pg0.remote_ip6, INVALID_INDEX)],
100 r = VppVxlanTunnel(cls, src=cls.pg0.local_ip6,
101 dst=dest_ip6, vni=vni)
103 cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
106 def add_mcast_tunnels_load(cls):
107 cls.add_del_mcast_tunnels_load(is_add=1)
110 def del_mcast_tunnels_load(cls):
111 cls.add_del_mcast_tunnels_load(is_add=0)
113 # Class method to start the VXLAN test case.
114 # Overrides setUpClass method in VppTestCase class.
115 # Python try..except statement is used to ensure that the tear down of
116 # the class will be executed even if exception is raised.
117 # @param cls The class pointer.
120 super(TestVxlan6, cls).setUpClass()
126 # Create 2 pg interfaces.
127 cls.create_pg_interfaces(range(4))
128 for pg in cls.pg_interfaces:
131 # Configure IPv6 addresses on VPP pg0.
134 # Resolve MAC address for VPP's IP address on pg0.
135 cls.pg0.resolve_ndp()
137 # Our Multicast address
138 cls.mcast_ip6 = 'ff0e::1'
139 cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip6)
141 super(TestVxlan6, cls).tearDownClass()
145 def tearDownClass(cls):
146 super(TestVxlan6, cls).tearDownClass()
149 super(TestVxlan6, self).setUp()
150 # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
152 self.single_tunnel_vni = 0x12345
153 self.single_tunnel_bd = 1
154 r = VppVxlanTunnel(self, src=self.pg0.local_ip6,
155 dst=self.pg0.remote_ip6,
156 vni=self.single_tunnel_vni)
158 self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
159 bd_id=self.single_tunnel_bd)
160 self.vapi.sw_interface_set_l2_bridge(
161 rx_sw_if_index=self.pg1.sw_if_index, bd_id=self.single_tunnel_bd)
163 # Setup vni 2 to test multicast flooding
164 self.n_ucast_tunnels = 10
165 self.mcast_flood_bd = 2
166 self.create_vxlan_flood_test_bd(self.mcast_flood_bd,
167 self.n_ucast_tunnels)
168 r = VppVxlanTunnel(self, src=self.pg0.local_ip6, dst=self.mcast_ip6,
169 mcast_sw_if_index=1, vni=self.mcast_flood_bd)
171 self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
172 bd_id=self.mcast_flood_bd)
173 self.vapi.sw_interface_set_l2_bridge(
174 rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.mcast_flood_bd)
176 # Setup vni 3 to test unicast flooding
177 self.ucast_flood_bd = 3
178 self.create_vxlan_flood_test_bd(self.ucast_flood_bd,
179 self.n_ucast_tunnels)
180 self.vapi.sw_interface_set_l2_bridge(
181 rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd)
183 # Method to define VPP actions before tear down of the test case.
184 # Overrides tearDown method in VppTestCase class.
185 # @param self The object pointer.
187 super(TestVxlan6, self).tearDown()
189 def show_commands_at_teardown(self):
190 self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
191 self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
192 self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
193 self.logger.info(self.vapi.cli("show vxlan tunnel"))
195 def test_encap_fragmented_packet(self):
196 """ Encapsulation test send fragments from pg1
197 Verify receipt of encapsulated frames on pg0
200 frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
201 IP(src='4.3.2.1', dst='1.2.3.4') /
202 UDP(sport=20000, dport=10000) /
205 frags = util.fragment_rfc791(frame, 400)
207 self.pg1.add_stream(frags)
209 self.pg0.enable_capture()
213 out = self.pg0.get_capture(3)
217 payload.append(self.decapsulate(pkt))
218 self.check_encapsulation(pkt, self.single_tunnel_vni)
220 reassembled = util.reassemble4(payload)
222 self.assertEqual(Ether(raw(frame))[IP], reassembled[IP])
225 if __name__ == '__main__':
226 unittest.main(testRunner=VppTestRunner)