| #!/usr/bin/env python3 |
| |
| import socket |
| from util import ip4_range |
| import unittest |
| from config import config |
| 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_gpe_tunnel import VppVxlanGpeTunnel |
| from vpp_ip import INVALID_INDEX |
| |
| |
| @unittest.skipUnless(config.extended, "part of extended tests") |
| class TestVxlanGpe(BridgeDomain, VppTestCase): |
| """VXLAN-GPE 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-GPE 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-GPE 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-GPE header |
| """ |
| # check if is set I and P flag |
| self.assertEqual(pkt[VXLAN].flags, 0x0C) |
| return pkt[VXLAN].payload |
| |
| # Method for checking VXLAN-GPE encapsulation. |
| # |
| def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False): |
| # 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-GPE tunnel src IP is VPP_IP and dst 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-GPE 4790, 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_gpe_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_ip4n will not be resolved |
| rip = VppIpRoute( |
| cls, |
| dest_ip4, |
| 32, |
| [VppRoutePath(next_hop_address, INVALID_INDEX)], |
| register=False, |
| ) |
| rip.add_vpp_config() |
| |
| r = VppVxlanGpeTunnel( |
| cls, |
| src_addr=cls.pg0.local_ip4, |
| dst_addr=dest_ip4, |
| src_port=port, |
| dst_port=port, |
| vni=vni, |
| ) |
| r.add_vpp_config() |
| cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=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_gpe ref_count mechanism |
| """ |
| n_shared_dst_tunnels = 20 |
| vni_start = 1000 |
| vni_end = vni_start + n_shared_dst_tunnels |
| for vni in range(vni_start, vni_end): |
| r = VppVxlanGpeTunnel( |
| cls, |
| src_addr=cls.pg0.local_ip4, |
| dst_addr=cls.mcast_ip4, |
| src_port=port, |
| dst_port=port, |
| 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_gpe stability |
| """ |
| n_distinct_dst_tunnels = 20 |
| 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 = int(dest_ip4.split(".")[3]) |
| r = VppVxlanGpeTunnel( |
| cls, |
| src_addr=cls.pg0.local_ip4, |
| dst_addr=dest_ip4, |
| src_port=port, |
| dst_port=port, |
| 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-GPE 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(TestVxlanGpe, cls).setUpClass() |
| |
| try: |
| cls.flags = 0x0C |
| |
| # 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(TestVxlanGpe, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestVxlanGpe, self).setUp() |
| |
| def createVxLANInterfaces(self, port=4790): |
| # Create VXLAN-GPE VTEP on VPP pg0, and put vxlan_gpe_tunnel0 |
| # and pg1 into BD. |
| self.dport = port |
| |
| self.single_tunnel_vni = 0xABCDE |
| self.single_tunnel_bd = 11 |
| r = VppVxlanGpeTunnel( |
| self, |
| src_addr=self.pg0.local_ip4, |
| dst_addr=self.pg0.remote_ip4, |
| src_port=port, |
| dst_port=port, |
| 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 = 12 |
| self.create_vxlan_gpe_flood_test_bd( |
| self.mcast_flood_bd, self.n_ucast_tunnels, self.dport |
| ) |
| r = VppVxlanGpeTunnel( |
| self, |
| src_addr=self.pg0.local_ip4, |
| dst_addr=self.mcast_ip4, |
| src_port=port, |
| dst_port=port, |
| 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 = 13 |
| self.create_vxlan_gpe_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) |
| |
| """ |
| Tests with default port (4790) |
| """ |
| |
| def test_decap(self): |
| """Decapsulation test |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces() |
| super(TestVxlanGpe, self).test_decap() |
| |
| def test_encap(self): |
| """Encapsulation test |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces() |
| super(TestVxlanGpe, self).test_encap() |
| |
| def test_ucast_flood(self): |
| """Unicast flood test |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces() |
| super(TestVxlanGpe, self).test_ucast_flood() |
| |
| """ |
| Tests with custom port (1112) |
| """ |
| |
| def test_decap_custom_port(self): |
| """Decapsulation test custom port |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces(1112) |
| super(TestVxlanGpe, self).test_decap() |
| |
| def test_encap_custom_port(self): |
| """Encapsulation test custom port |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces(1112) |
| super(TestVxlanGpe, self).test_encap() |
| |
| def test_ucast_flood_custom_port(self): |
| """Unicast flood test custom port |
| from BridgeDoman |
| """ |
| self.createVxLANInterfaces(1112) |
| super(TestVxlanGpe, self).test_ucast_flood() |
| |
| @unittest.skip("test disabled for vxlan-gpe") |
| def test_mcast_flood(self): |
| """inherited from BridgeDomain""" |
| pass |
| |
| @unittest.skip("test disabled for vxlan-gpe") |
| def test_mcast_rcv(self): |
| """inherited from BridgeDomain""" |
| pass |
| |
| # 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(TestVxlanGpe, self).tearDown() |
| |
| def show_commands_at_teardown(self): |
| self.logger.info(self.vapi.cli("show bridge-domain 11 detail")) |
| self.logger.info(self.vapi.cli("show bridge-domain 12 detail")) |
| self.logger.info(self.vapi.cli("show bridge-domain 13 detail")) |
| self.logger.info(self.vapi.cli("show int")) |
| self.logger.info(self.vapi.cli("show vxlan-gpe")) |
| self.logger.info(self.vapi.cli("show trace")) |
| |
| |
| if __name__ == "__main__": |
| unittest.main(testRunner=VppTestRunner) |