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-rw-r--r--test/test_vxlan_gpe.py265
1 files changed, 265 insertions, 0 deletions
diff --git a/test/test_vxlan_gpe.py b/test/test_vxlan_gpe.py
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+++ b/test/test_vxlan_gpe.py
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+#!/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)