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Diffstat (limited to 'test/test_vxlan_gpe.py')
| -rw-r--r-- | test/test_vxlan_gpe.py | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/test/test_vxlan_gpe.py b/test/test_vxlan_gpe.py new file mode 100644 index 00000000000..c5d6bf07f7c --- /dev/null +++ b/test/test_vxlan_gpe.py @@ -0,0 +1,265 @@ +#!/usr/bin/env python3 + +import socket +from util import ip4_range +import unittest +from framework import VppTestCase, VppTestRunner, running_extended_tests +from template_bd import BridgeDomain + +from scapy.layers.l2 import Ether +from scapy.packet import Raw +from scapy.layers.inet import IP, UDP +from scapy.layers.vxlan import VXLAN + +import util +from vpp_ip_route import VppIpRoute, VppRoutePath + +from vpp_ip import INVALID_INDEX + + +@unittest.skipUnless(running_extended_tests, "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, type(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): + # 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 = cls.vapi.vxlan_gpe_add_del_tunnel( + src_addr=cls.pg0.local_ip4, + dst_addr=dest_ip4, + vni=vni) + 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, 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 = cls.vapi.vxlan_gpe_add_del_tunnel( + local=cls.pg0.local_ip4, + remote=cls.mcast_ip4, + mcast_sw_if_index=1, + vni=vni, + is_add=is_add) + if r.sw_if_index == 0xffffffff: + raise ValueError("bad sw_if_index: ~0") + + @classmethod + def add_shared_mcast_dst_load(cls): + cls.add_del_shared_mcast_dst_load(is_add=1) + + @classmethod + def del_shared_mcast_dst_load(cls): + cls.add_del_shared_mcast_dst_load(is_add=0) + + @classmethod + def add_del_mcast_tunnels_load(cls, 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]) + cls.vapi.vxlan_gpe_add_del_tunnel( + src_addr=cls.pg0.local_ip4, + dst_addr=dest_ip4, + mcast_sw_if_index=1, + vni=vni, + is_add=is_add) + + @classmethod + def add_mcast_tunnels_load(cls): + cls.add_del_mcast_tunnels_load(is_add=1) + + @classmethod + def del_mcast_tunnels_load(cls): + cls.add_del_mcast_tunnels_load(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.dport = 4790 + 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) + + # Create VXLAN-GPE VTEP on VPP pg0, and put vxlan_gpe_tunnel0 + # and pg1 into BD. + cls.single_tunnel_vni = 0xabcde + cls.single_tunnel_bd = 11 + r = cls.vapi.vxlan_gpe_add_del_tunnel( + src_addr=cls.pg0.local_ip4, + dst_addr=cls.pg0.remote_ip4, + vni=cls.single_tunnel_vni) + cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index, + bd_id=cls.single_tunnel_bd) + cls.vapi.sw_interface_set_l2_bridge( + rx_sw_if_index=cls.pg1.sw_if_index, bd_id=cls.single_tunnel_bd) + + # Setup vni 2 to test multicast flooding + cls.n_ucast_tunnels = 10 + cls.mcast_flood_bd = 12 + cls.create_vxlan_gpe_flood_test_bd(cls.mcast_flood_bd, + cls.n_ucast_tunnels) + r = cls.vapi.vxlan_gpe_add_del_tunnel( + src_addr=cls.pg0.local_ip4, + dst_addr=cls.mcast_ip4, + mcast_sw_if_index=1, + vni=cls.mcast_flood_bd) + cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index, + bd_id=cls.mcast_flood_bd) + cls.vapi.sw_interface_set_l2_bridge( + rx_sw_if_index=cls.pg2.sw_if_index, bd_id=cls.mcast_flood_bd) + + # Add and delete mcast tunnels to check stability + cls.add_shared_mcast_dst_load() + cls.add_mcast_tunnels_load() + cls.del_shared_mcast_dst_load() + cls.del_mcast_tunnels_load() + + # Setup vni 3 to test unicast flooding + cls.ucast_flood_bd = 13 + cls.create_vxlan_gpe_flood_test_bd(cls.ucast_flood_bd, + cls.n_ucast_tunnels) + cls.vapi.sw_interface_set_l2_bridge( + rx_sw_if_index=cls.pg3.sw_if_index, bd_id=cls.ucast_flood_bd) + except Exception: + super(TestVxlanGpe, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(TestVxlanGpe, cls).tearDownClass() + + @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) |