4 from util import ip4n_range
6 from framework import VppTestCase, VppTestRunner
7 from template_bd import BridgeDomain
9 from scapy.layers.l2 import Ether
10 from scapy.layers.inet import IP, UDP
11 from scapy.layers.vxlan import VXLAN
12 from scapy.utils import atol
15 class TestVxlan(BridgeDomain, VppTestCase):
16 """ VXLAN Test Case """
18 def __init__(self, *args):
19 BridgeDomain.__init__(self)
20 VppTestCase.__init__(self, *args)
22 def encapsulate(self, pkt, vni):
24 Encapsulate the original payload frame by adding VXLAN header with its
25 UDP, IP and Ethernet fields
27 return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
28 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
29 UDP(sport=self.dport, dport=self.dport, chksum=0) /
30 VXLAN(vni=vni, flags=self.flags) /
33 def encap_mcast(self, pkt, src_ip, src_mac, vni):
35 Encapsulate the original payload frame by adding VXLAN header with its
36 UDP, IP and Ethernet fields
38 return (Ether(src=src_mac, dst=self.mcast_mac) /
39 IP(src=src_ip, dst=self.mcast_ip4) /
40 UDP(sport=self.dport, dport=self.dport, chksum=0) /
41 VXLAN(vni=vni, flags=self.flags) /
44 def decapsulate(self, pkt):
46 Decapsulate the original payload frame by removing VXLAN header
48 # check if is set I flag
49 self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
50 return pkt[VXLAN].payload
52 # Method for checking VXLAN encapsulation.
54 def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
55 # TODO: add error messages
56 # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
58 self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
61 self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
63 self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
64 # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
65 self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
68 self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
70 self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
71 # Verify UDP destination port is VXLAN 4789, source UDP port could be
73 self.assertEqual(pkt[UDP].dport, type(self).dport)
74 # TODO: checksum check
76 self.assertEqual(pkt[VXLAN].vni, vni)
79 def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels):
80 # Create 10 ucast vxlan tunnels under bd
82 ip_range_end = ip_range_start + n_ucast_tunnels
83 next_hop_address = cls.pg0.remote_ip4n
84 for dest_ip4n in ip4n_range(next_hop_address, ip_range_start,
86 # add host route so dest_ip4n will not be resolved
87 cls.vapi.ip_add_del_route(dest_ip4n, 32, next_hop_address)
88 r = cls.vapi.vxlan_add_del_tunnel(
89 src_addr=cls.pg0.local_ip4n,
92 cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
95 def add_del_shared_mcast_dst_load(cls, is_add):
97 add or del tunnels sharing the same mcast dst
98 to test vxlan ref_count mechanism
100 n_shared_dst_tunnels = 2000
102 vni_end = vni_start + n_shared_dst_tunnels
103 for vni in range(vni_start, vni_end):
104 r = cls.vapi.vxlan_add_del_tunnel(
105 src_addr=cls.pg0.local_ip4n,
106 dst_addr=cls.mcast_ip4n,
110 if r.sw_if_index == 0xffffffff:
111 raise "bad sw_if_index"
114 def add_shared_mcast_dst_load(cls):
115 cls.add_del_shared_mcast_dst_load(is_add=1)
118 def del_shared_mcast_dst_load(cls):
119 cls.add_del_shared_mcast_dst_load(is_add=0)
122 def add_del_mcast_tunnels_load(cls, is_add):
124 add or del tunnels to test vxlan stability
126 n_distinct_dst_tunnels = 200
128 ip_range_end = ip_range_start + n_distinct_dst_tunnels
129 for dest_ip4n in ip4n_range(cls.mcast_ip4n, ip_range_start,
131 vni = bytearray(dest_ip4n)[3]
132 cls.vapi.vxlan_add_del_tunnel(
133 src_addr=cls.pg0.local_ip4n,
140 def add_mcast_tunnels_load(cls):
141 cls.add_del_mcast_tunnels_load(is_add=1)
144 def del_mcast_tunnels_load(cls):
145 cls.add_del_mcast_tunnels_load(is_add=0)
147 # Class method to start the VXLAN test case.
148 # Overrides setUpClass method in VppTestCase class.
149 # Python try..except statement is used to ensure that the tear down of
150 # the class will be executed even if exception is raised.
151 # @param cls The class pointer.
154 super(TestVxlan, cls).setUpClass()
160 # Create 2 pg interfaces.
161 cls.create_pg_interfaces(range(4))
162 for pg in cls.pg_interfaces:
165 # Configure IPv4 addresses on VPP pg0.
168 # Resolve MAC address for VPP's IP address on pg0.
169 cls.pg0.resolve_arp()
171 # Our Multicast address
172 cls.mcast_ip4 = '239.1.1.1'
173 cls.mcast_ip4n = socket.inet_pton(socket.AF_INET, cls.mcast_ip4)
174 iplong = atol(cls.mcast_ip4)
175 cls.mcast_mac = "01:00:5e:%02x:%02x:%02x" % (
176 (iplong >> 16) & 0x7F, (iplong >> 8) & 0xFF, iplong & 0xFF)
178 # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
180 cls.single_tunnel_bd = 1
181 r = cls.vapi.vxlan_add_del_tunnel(
182 src_addr=cls.pg0.local_ip4n,
183 dst_addr=cls.pg0.remote_ip4n,
184 vni=cls.single_tunnel_bd)
185 cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
186 bd_id=cls.single_tunnel_bd)
187 cls.vapi.sw_interface_set_l2_bridge(cls.pg1.sw_if_index,
188 bd_id=cls.single_tunnel_bd)
190 # Setup vni 2 to test multicast flooding
191 cls.n_ucast_tunnels = 10
192 cls.mcast_flood_bd = 2
193 cls.create_vxlan_flood_test_bd(cls.mcast_flood_bd,
195 r = cls.vapi.vxlan_add_del_tunnel(
196 src_addr=cls.pg0.local_ip4n,
197 dst_addr=cls.mcast_ip4n,
199 vni=cls.mcast_flood_bd)
200 cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
201 bd_id=cls.mcast_flood_bd)
202 cls.vapi.sw_interface_set_l2_bridge(cls.pg2.sw_if_index,
203 bd_id=cls.mcast_flood_bd)
205 # Add and delete mcast tunnels to check stability
206 cls.add_shared_mcast_dst_load()
207 cls.add_mcast_tunnels_load()
208 cls.del_shared_mcast_dst_load()
209 cls.del_mcast_tunnels_load()
211 # Setup vni 3 to test unicast flooding
212 cls.ucast_flood_bd = 3
213 cls.create_vxlan_flood_test_bd(cls.ucast_flood_bd,
215 cls.vapi.sw_interface_set_l2_bridge(cls.pg3.sw_if_index,
216 bd_id=cls.ucast_flood_bd)
218 super(TestVxlan, cls).tearDownClass()
221 # Method to define VPP actions before tear down of the test case.
222 # Overrides tearDown method in VppTestCase class.
223 # @param self The object pointer.
225 super(TestVxlan, self).tearDown()
226 if not self.vpp_dead:
227 self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
228 self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
229 self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
230 self.logger.info(self.vapi.cli("show vxlan tunnel"))
233 if __name__ == '__main__':
234 unittest.main(testRunner=VppTestRunner)