--- /dev/null
+#!/usr/bin/env python3
+
+import socket
+from util import ip4_range, reassemble4
+import unittest
+from framework import VppTestCase, VppTestRunner
+from template_bd import BridgeDomain
+
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw, bind_layers
+from scapy.layers.inet import IP, UDP
+from scapy.layers.vxlan import VXLAN
+
+import util
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_vxlan_tunnel import VppVxlanTunnel
+from vpp_ip import INVALID_INDEX
+
+
+class TestVxlan(BridgeDomain, VppTestCase):
+ """ VXLAN Test Case """
+
+ def __init__(self, *args):
+ BridgeDomain.__init__(self)
+ VppTestCase.__init__(self, *args)
+
+ def encapsulate(self, pkt, vni):
+ """
+ Encapsulate the original payload frame by adding VXLAN header with its
+ UDP, IP and Ethernet fields
+ """
+ return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=self.dport, dport=self.dport, chksum=0) /
+ VXLAN(vni=vni, flags=self.flags) /
+ pkt)
+
+ def ip_range(self, start, end):
+ """ range of remote ip's """
+ return ip4_range(self.pg0.remote_ip4, start, end)
+
+ def encap_mcast(self, pkt, src_ip, src_mac, vni):
+ """
+ Encapsulate the original payload frame by adding VXLAN header with its
+ UDP, IP and Ethernet fields
+ """
+ return (Ether(src=src_mac, dst=self.mcast_mac) /
+ IP(src=src_ip, dst=self.mcast_ip4) /
+ UDP(sport=self.dport, dport=self.dport, chksum=0) /
+ VXLAN(vni=vni, flags=self.flags) /
+ pkt)
+
+ def decapsulate(self, pkt):
+ """
+ Decapsulate the original payload frame by removing VXLAN header
+ """
+ # check if is set I flag
+ self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
+ return pkt[VXLAN].payload
+
+ # Method for checking VXLAN encapsulation.
+ #
+ def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
+ # TODO: add error messages
+ # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
+ # by VPP using ARP.
+ self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
+ else:
+ self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
+ # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
+ self.assertEqual(pkt[IP].src, self.pg0.local_ip4)
+ if not local_only:
+ if not mcast_pkt:
+ self.assertEqual(pkt[IP].dst, self.pg0.remote_ip4)
+ else:
+ self.assertEqual(pkt[IP].dst, type(self).mcast_ip4)
+ # Verify UDP destination port is VXLAN 4789, source UDP port could be
+ # arbitrary.
+ self.assertEqual(pkt[UDP].dport, self.dport)
+ # Verify UDP checksum
+ self.assert_udp_checksum_valid(pkt)
+ # Verify VNI
+ self.assertEqual(pkt[VXLAN].vni, vni)
+
+ @classmethod
+ def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels, port):
+ # Create 10 ucast vxlan tunnels under bd
+ ip_range_start = 10
+ ip_range_end = ip_range_start + n_ucast_tunnels
+ next_hop_address = cls.pg0.remote_ip4
+ for dest_ip4 in ip4_range(next_hop_address, ip_range_start,
+ ip_range_end):
+ # add host route so dest_ip4 will not be resolved
+ rip = VppIpRoute(cls, dest_ip4, 32,
+ [VppRoutePath(next_hop_address,
+ INVALID_INDEX)],
+ register=False)
+ rip.add_vpp_config()
+
+ r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+ src_port=port, dst_port=port,
+ dst=dest_ip4, vni=vni)
+ r.add_vpp_config()
+ cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)
+
+ @classmethod
+ def add_del_shared_mcast_dst_load(cls, port, is_add):
+ """
+ add or del tunnels sharing the same mcast dst
+ to test vxlan ref_count mechanism
+ """
+ n_shared_dst_tunnels = 20
+ vni_start = 10000
+ vni_end = vni_start + n_shared_dst_tunnels
+ for vni in range(vni_start, vni_end):
+ r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+ src_port=port, dst_port=port,
+ dst=cls.mcast_ip4, mcast_sw_if_index=1, vni=vni)
+ if is_add:
+ r.add_vpp_config()
+ if r.sw_if_index == 0xffffffff:
+ raise ValueError("bad sw_if_index: ~0")
+ else:
+ r.remove_vpp_config()
+
+ @classmethod
+ def add_shared_mcast_dst_load(cls, port):
+ cls.add_del_shared_mcast_dst_load(port=port, is_add=1)
+
+ @classmethod
+ def del_shared_mcast_dst_load(cls, port):
+ cls.add_del_shared_mcast_dst_load(port=port, is_add=0)
+
+ @classmethod
+ def add_del_mcast_tunnels_load(cls, port, is_add):
+ """
+ add or del tunnels to test vxlan stability
+ """
+ n_distinct_dst_tunnels = 200
+ ip_range_start = 10
+ ip_range_end = ip_range_start + n_distinct_dst_tunnels
+ for dest_ip4 in ip4_range(cls.mcast_ip4, ip_range_start,
+ ip_range_end):
+ vni = bytearray(socket.inet_pton(socket.AF_INET, dest_ip4))[3]
+ r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4,
+ src_port=port, dst_port=port,
+ dst=dest_ip4, mcast_sw_if_index=1, vni=vni)
+ if is_add:
+ r.add_vpp_config()
+ else:
+ r.remove_vpp_config()
+
+ @classmethod
+ def add_mcast_tunnels_load(cls, port):
+ cls.add_del_mcast_tunnels_load(port=port, is_add=1)
+
+ @classmethod
+ def del_mcast_tunnels_load(cls, port):
+ cls.add_del_mcast_tunnels_load(port=port, is_add=0)
+
+ # Class method to start the VXLAN test case.
+ # Overrides setUpClass method in VppTestCase class.
+ # Python try..except statement is used to ensure that the tear down of
+ # the class will be executed even if exception is raised.
+ # @param cls The class pointer.
+ @classmethod
+ def setUpClass(cls):
+ super(TestVxlan, cls).setUpClass()
+
+ try:
+ cls.flags = 0x8
+
+ # Create 2 pg interfaces.
+ cls.create_pg_interfaces(range(4))
+ for pg in cls.pg_interfaces:
+ pg.admin_up()
+
+ # Configure IPv4 addresses on VPP pg0.
+ cls.pg0.config_ip4()
+
+ # Resolve MAC address for VPP's IP address on pg0.
+ cls.pg0.resolve_arp()
+
+ # Our Multicast address
+ cls.mcast_ip4 = '239.1.1.1'
+ cls.mcast_mac = util.mcast_ip_to_mac(cls.mcast_ip4)
+ except Exception:
+ cls.tearDownClass()
+ raise
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestVxlan, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestVxlan, self).setUp()
+
+ def createVxLANInterfaces(self, port=4789):
+ # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
+ # into BD.
+ self.dport = port
+
+ self.single_tunnel_vni = 0x12345
+ self.single_tunnel_bd = 1
+ r = VppVxlanTunnel(self, src=self.pg0.local_ip4,
+ dst=self.pg0.remote_ip4,
+ src_port=self.dport, dst_port=self.dport,
+ vni=self.single_tunnel_vni)
+ r.add_vpp_config()
+ self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+ bd_id=self.single_tunnel_bd)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg1.sw_if_index, bd_id=self.single_tunnel_bd)
+
+ # Setup vni 2 to test multicast flooding
+ self.n_ucast_tunnels = 10
+ self.mcast_flood_bd = 2
+ self.create_vxlan_flood_test_bd(self.mcast_flood_bd,
+ self.n_ucast_tunnels,
+ self.dport)
+ r = VppVxlanTunnel(self, src=self.pg0.local_ip4, dst=self.mcast_ip4,
+ src_port=self.dport, dst_port=self.dport,
+ mcast_sw_if_index=1, vni=self.mcast_flood_bd)
+ r.add_vpp_config()
+ self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index,
+ bd_id=self.mcast_flood_bd)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.mcast_flood_bd)
+
+ # Add and delete mcast tunnels to check stability
+ self.add_shared_mcast_dst_load(self.dport)
+ self.add_mcast_tunnels_load(self.dport)
+ self.del_shared_mcast_dst_load(self.dport)
+ self.del_mcast_tunnels_load(self.dport)
+
+ # Setup vni 3 to test unicast flooding
+ self.ucast_flood_bd = 3
+ self.create_vxlan_flood_test_bd(self.ucast_flood_bd,
+ self.n_ucast_tunnels,
+ self.dport)
+ self.vapi.sw_interface_set_l2_bridge(
+ rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd)
+
+ # Set scapy listen custom port for VxLAN
+ bind_layers(UDP, VXLAN, dport=self.dport)
+
+ def encap_big_packet(self):
+ self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1500, 0, 0, 0])
+
+ frame = (Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+ IP(src='4.3.2.1', dst='1.2.3.4') /
+ UDP(sport=20000, dport=10000) /
+ Raw(b'\xa5' * 1450))
+
+ self.pg1.add_stream([frame])
+
+ self.pg0.enable_capture()
+
+ self.pg_start()
+
+ # Pick first received frame and check if it's correctly encapsulated.
+ out = self.pg0.get_capture(2)
+ ether = out[0]
+ pkt = reassemble4(out)
+ pkt = ether / pkt
+ self.check_encapsulation(pkt, self.single_tunnel_vni)
+
+ payload = self.decapsulate(pkt)
+ # TODO: Scapy bug?
+ # self.assert_eq_pkts(payload, frame)
+
+ """
+ Tests with default port (4789)
+ """
+ def test_decap(self):
+ """ Decapsulation test
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces()
+ super(TestVxlan, self).test_decap()
+
+ def test_encap(self):
+ """ Encapsulation test
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces()
+ super(TestVxlan, self).test_encap()
+
+ def test_encap_big_packet(self):
+ """ Encapsulation test send big frame from pg1
+ Verify receipt of encapsulated frames on pg0
+ """
+ self.createVxLANInterfaces()
+ self.encap_big_packet()
+
+ def test_ucast_flood(self):
+ """ Unicast flood test
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces()
+ super(TestVxlan, self).test_ucast_flood()
+
+ def test_mcast_flood(self):
+ """ Multicast flood test
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces()
+ super(TestVxlan, self).test_mcast_flood()
+
+ def test_mcast_rcv(self):
+ """ Multicast receive test
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces()
+ super(TestVxlan, self).test_mcast_rcv()
+
+ """
+ Tests with custom port
+ """
+ def test_decap_custom_port(self):
+ """ Decapsulation test custom port
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces(1111)
+ super(TestVxlan, self).test_decap()
+
+ def test_encap_custom_port(self):
+ """ Encapsulation test custom port
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces(1111)
+ super(TestVxlan, self).test_encap()
+
+ def test_ucast_flood_custom_port(self):
+ """ Unicast flood test custom port
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces(1111)
+ super(TestVxlan, self).test_ucast_flood()
+
+ def test_mcast_flood_custom_port(self):
+ """ Multicast flood test custom port
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces(1111)
+ super(TestVxlan, self).test_mcast_flood()
+
+ def test_mcast_rcv_custom_port(self):
+ """ Multicast receive test custom port
+ from BridgeDoman
+ """
+ self.createVxLANInterfaces(1111)
+ super(TestVxlan, self).test_mcast_rcv()
+
+ # Method to define VPP actions before tear down of the test case.
+ # Overrides tearDown method in VppTestCase class.
+ # @param self The object pointer.
+
+ def tearDown(self):
+ super(TestVxlan, self).tearDown()
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
+ self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
+ self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
+ self.logger.info(self.vapi.cli("show vxlan tunnel"))
+
+
+class TestVxlan2(VppTestCase):
+ """ VXLAN Test Case """
+ def setUp(self):
+ super(TestVxlan2, self).setUp()
+
+ # Create 2 pg interfaces.
+ self.create_pg_interfaces(range(4))
+ for pg in self.pg_interfaces:
+ pg.admin_up()
+
+ # Configure IPv4 addresses on VPP pg0.
+ self.pg0.config_ip4()
+ self.pg0.resolve_arp()
+
+ def tearDown(self):
+ super(TestVxlan2, self).tearDown()
+
+ def test_xconnect(self):
+ """ VXLAN source address not local """
+
+ #
+ # test the broken configuration of a VXLAN tunnel whose
+ # source address is not local ot the box. packets sent
+ # through the tunnel should be dropped
+ #
+ t = VppVxlanTunnel(self,
+ src="10.0.0.5",
+ dst=self.pg0.local_ip4,
+ vni=1000)
+ t.add_vpp_config()
+ t.admin_up()
+
+ self.vapi.sw_interface_set_l2_xconnect(t.sw_if_index,
+ self.pg1.sw_if_index,
+ enable=1)
+ self.vapi.sw_interface_set_l2_xconnect(self.pg1.sw_if_index,
+ t.sw_if_index,
+ enable=1)
+
+ p = (Ether(src="00:11:22:33:44:55",
+ dst="00:00:00:11:22:33") /
+ IP(src="4.3.2.1", dst="1.2.3.4") /
+ UDP(sport=20000, dport=10000) /
+ Raw(b'\xa5' * 1450))
+
+ rx = self.send_and_assert_no_replies(self.pg1, [p])
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff