X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=test%2Ftest_vxlan.py;h=910611c63cc18f67898546737849865daa20f333;hp=1db34927dd87fd1266d7c15e9bc5dba4edfb6bb5;hb=7c0eb56f4;hpb=f56b77a0764222cc45a9df572df901067a273356 diff --git a/test/test_vxlan.py b/test/test_vxlan.py index 1db34927dd8..910611c63cc 100644 --- a/test/test_vxlan.py +++ b/test/test_vxlan.py @@ -1,70 +1,163 @@ -#!/usr/bin/env python +#!/usr/bin/env python3 +import socket +from util import ip4n_range, ip4_range, reassemble4 import unittest from framework import VppTestCase, VppTestRunner -from util import Util 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_handlers.vxlan import VXLAN +from scapy.layers.vxlan import VXLAN +from scapy.utils import atol +from vpp_ip_route import VppIpRoute, VppRoutePath +from vpp_vxlan_tunnel import VppVxlanTunnel +from vpp_ip import INVALID_INDEX -## TestVxlan is a subclass of BridgeDomain, Util, VppTestCase classes. -# -# TestVxlan class defines VXLAN test cases for VXLAN encapsulation, -# decapsulation and VXLAN tunnel termination in L2 bridge-domain. -class TestVxlan(BridgeDomain, Util, VppTestCase): +class TestVxlan(BridgeDomain, VppTestCase): """ VXLAN Test Case """ - ## Method to initialize all parent classes. - # - # Initialize BridgeDomain objects, set documentation string for inherited - # tests and initialize VppTestCase object which must be called after - # doc strings are set. def __init__(self, *args): BridgeDomain.__init__(self) - self.test_decap.__func__.__doc__ = ' VXLAN BD decapsulation ' - self.test_encap.__func__.__doc__ = ' VXLAN BD encapsulation ' VppTestCase.__init__(self, *args) - ## Method for VXLAN encapsulate function. - # - # Encapsulate the original payload frame by adding VXLAN header with its - # UDP, IP and Ethernet fields. - def encapsulate(self, pkt): - return (Ether(src=self.MY_MACS[0], dst=self.VPP_MACS[0]) / - IP(src=self.MY_IP4S[0], dst=self.VPP_IP4S[0]) / - UDP(sport=4789, dport=4789, chksum=0) / - VXLAN(vni=1) / + 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) - ## Method for VXLAN decapsulate function. - # - # Decapsulate the original payload frame by removing VXLAN header with - # its UDP, IP and Ethernet fields. 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. + # Method for checking VXLAN encapsulation. # - def check_encapsulation(self, pkt): + 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 + # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved # by VPP using ARP. - self.assertEqual(pkt[Ether].src, self.VPP_MACS[0]) - self.assertEqual(pkt[Ether].dst, self.MY_MACS[0]) - ## Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP. - self.assertEqual(pkt[IP].src, self.VPP_IP4S[0]) - self.assertEqual(pkt[IP].dst, self.MY_IP4S[0]) - ## Verify UDP destination port is VXLAN 4789, source UDP port could be + 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, 4789) + self.assertEqual(pkt[UDP].dport, type(self).dport) # TODO: checksum check - ## Verify VNI, based on configuration it must be 1. - self.assertEqual(pkt[VXLAN].vni, 1) + # Verify VNI + self.assertEqual(pkt[VXLAN].vni, vni) + + @classmethod + def create_vxlan_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() + dest_ip4n = socket.inet_pton(socket.AF_INET, dest_ip4) + + r = VppVxlanTunnel(cls, src=cls.pg0.local_ip4, + 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, 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, + 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() - ## Class method to start the VXLAN test case. + @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 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, + 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): + 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 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. @@ -72,31 +165,123 @@ class TestVxlan(BridgeDomain, Util, VppTestCase): @classmethod def setUpClass(cls): super(TestVxlan, cls).setUpClass() + try: - ## Create 2 pg interfaces. - cls.create_interfaces(range(2)) - ## Configure IPv4 addresses on VPP pg0. - cls.config_ip4([0]) - ## Resolve MAC address for VPP's IP address on pg0. - cls.resolve_arp([0]) - - ## Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1 - # into BD. - cls.api("vxlan_add_del_tunnel src %s dst %s vni 1" % - (cls.VPP_IP4S[0], cls.MY_IP4S[0])) - cls.api("sw_interface_set_l2_bridge vxlan_tunnel0 bd_id 1") - cls.api("sw_interface_set_l2_bridge pg1 bd_id 1") - except: - ## In case setUpClass fails run tear down. - cls.tearDownClass() + cls.dport = 4789 + 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_ip4n = socket.inet_pton(socket.AF_INET, cls.mcast_ip4) + iplong = atol(cls.mcast_ip4) + cls.mcast_mac = "01:00:5e:%02x:%02x:%02x" % ( + (iplong >> 16) & 0x7F, (iplong >> 8) & 0xFF, iplong & 0xFF) + + except Exception: + super(TestVxlan, cls).tearDownClass() raise - ## Method to define VPP actions before tear down of the test case. + @classmethod + def tearDownClass(cls): + super(TestVxlan, cls).tearDownClass() + + def setUp(self): + super(TestVxlan, self).setUp() + # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1 + # into BD. + self.single_tunnel_bd = 1 + r = VppVxlanTunnel(self, src=self.pg0.local_ip4, + dst=self.pg0.remote_ip4, vni=self.single_tunnel_bd) + 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) + r = VppVxlanTunnel(self, src=self.pg0.local_ip4, dst=self.mcast_ip4, + 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.add_mcast_tunnels_load() + self.del_shared_mcast_dst_load() + self.del_mcast_tunnels_load() + + # 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.vapi.sw_interface_set_l2_bridge( + rx_sw_if_index=self.pg3.sw_if_index, bd_id=self.ucast_flood_bd) + + def test_decap(self): + """ Decapsulation test + from BridgeDoman + """ + super(TestVxlan, self).test_decap() + + def test_encap_big_packet(self): + """ Encapsulation test send big frame from pg1 + Verify receipt of encapsulated frames on pg0 + """ + + 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_bd) + + payload = self.decapsulate(pkt) + # TODO: Scapy bug? + # self.assert_eq_pkts(payload, frame) + + # 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() - self.cli(2, "show bridge-domain 1 detail") + + 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")) + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)