diff options
Diffstat (limited to 'extras/deprecated/vnet/vxlan-gbp/test_vxlan_gbp.py')
| -rw-r--r-- | extras/deprecated/vnet/vxlan-gbp/test_vxlan_gbp.py | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/extras/deprecated/vnet/vxlan-gbp/test_vxlan_gbp.py b/extras/deprecated/vnet/vxlan-gbp/test_vxlan_gbp.py new file mode 100644 index 00000000000..1d64937b6dd --- /dev/null +++ b/extras/deprecated/vnet/vxlan-gbp/test_vxlan_gbp.py @@ -0,0 +1,304 @@ +#!/usr/bin/env python3 + +import socket +from util import ip4_range, reassemble4_ether +import unittest +from framework import VppTestCase, VppTestRunner +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 + +from vpp_ip_route import VppIpRoute, VppRoutePath +from vpp_ip import INVALID_INDEX + + +class TestVxlanGbp(VppTestCase): + """VXLAN GBP Test Case""" + + @property + def frame_request(self): + """Ethernet frame modeling a generic request""" + return ( + Ether(src="00:00:00:00:00:01", dst="00:00:00:00:00:02") + / IP(src="1.2.3.4", dst="4.3.2.1") + / UDP(sport=10000, dport=20000) + / Raw(b"\xa5" * 100) + ) + + @property + def frame_reply(self): + """Ethernet frame modeling a generic reply""" + return ( + 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" * 100) + ) + + def encapsulate(self, pkt, vni): + """ + Encapsulate the original payload frame by adding VXLAN GBP 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, gpflags=self.gpflags, gpid=self.sclass) + / pkt + ) + + def ip_range(self, start, end): + """range of remote ip's""" + return ip4_range(self.pg0.remote_ip4, start, end) + + def decapsulate(self, pkt): + """ + Decapsulate the original payload frame by removing VXLAN header + """ + # check if is set G and I flag + self.assertEqual(pkt[VXLAN].flags, int("0x88", 16)) + return pkt[VXLAN].payload + + # Method for checking VXLAN GBP 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 GBP 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 GBP 48879, 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 + # pkt.show() + self.assertEqual(pkt[VXLAN].vni, vni) + # Verify Source Class + self.assertEqual(pkt[VXLAN].gpid, 0) + + @classmethod + def create_vxlan_gbp_flood_test_bd(cls, vni, n_ucast_tunnels): + # Create 2 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(cls.pg0.remote_ip4, 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 = cls.vapi.vxlan_gbp_tunnel_add_del( + tunnel={ + "src": cls.pg0.local_ip4, + "dst": dest_ip4, + "vni": vni, + "instance": INVALID_INDEX, + "mcast_sw_if_index": INVALID_INDEX, + "mode": 1, + }, + is_add=1, + ) + cls.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=r.sw_if_index, bd_id=vni) + + # Class method to start the VXLAN GBP 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(TestVxlanGbp, cls).setUpClass() + + try: + cls.dport = 48879 + cls.flags = 0x88 + cls.gpflags = 0x0 + cls.sclass = 0 + + # 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() + + # Create VXLAN GBP VTEP on VPP pg0, and put vxlan_gbp_tunnel0 and + # pg1 into BD. + cls.single_tunnel_bd = 1 + cls.single_tunnel_vni = 0xABCDE + r = cls.vapi.vxlan_gbp_tunnel_add_del( + tunnel={ + "src": cls.pg0.local_ip4, + "dst": cls.pg0.remote_ip4, + "vni": cls.single_tunnel_vni, + "instance": INVALID_INDEX, + "mcast_sw_if_index": INVALID_INDEX, + "mode": 1, + }, + is_add=1, + ) + 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 = 2 + # Setup vni 3 to test unicast flooding + cls.ucast_flood_bd = 3 + cls.create_vxlan_gbp_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(TestVxlanGbp, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(TestVxlanGbp, cls).tearDownClass() + + def assert_eq_pkts(self, pkt1, pkt2): + """Verify the Ether, IP, UDP, payload are equal in both + packets + """ + self.assertEqual(pkt1[Ether].src, pkt2[Ether].src) + self.assertEqual(pkt1[Ether].dst, pkt2[Ether].dst) + self.assertEqual(pkt1[IP].src, pkt2[IP].src) + self.assertEqual(pkt1[IP].dst, pkt2[IP].dst) + self.assertEqual(pkt1[UDP].sport, pkt2[UDP].sport) + self.assertEqual(pkt1[UDP].dport, pkt2[UDP].dport) + self.assertEqual(pkt1[Raw], pkt2[Raw]) + + def test_decap(self): + """Decapsulation test + Send encapsulated frames from pg0 + Verify receipt of decapsulated frames on pg1 + """ + encapsulated_pkt = self.encapsulate(self.frame_request, self.single_tunnel_vni) + + self.pg0.add_stream( + [ + encapsulated_pkt, + ] + ) + + self.pg1.enable_capture() + + self.pg_start() + + # Pick first received frame and check if it's the non-encapsulated + # frame + out = self.pg1.get_capture(1) + pkt = out[0] + self.assert_eq_pkts(pkt, self.frame_request) + + def test_encap(self): + """Encapsulation test + Send frames from pg1 + Verify receipt of encapsulated frames on pg0 + """ + self.pg1.add_stream([self.frame_reply]) + + self.pg0.enable_capture() + + self.pg_start() + + # Pick first received frame and check if it's correctly encapsulated. + out = self.pg0.get_capture(1) + pkt = out[0] + self.check_encapsulation(pkt, self.single_tunnel_vni) + + payload = self.decapsulate(pkt) + self.assert_eq_pkts(payload, self.frame_reply) + + def test_ucast_flood(self): + """Unicast flood test + Send frames from pg3 + Verify receipt of encapsulated frames on pg0 + """ + self.pg3.add_stream([self.frame_reply]) + + self.pg0.enable_capture() + + self.pg_start() + + # Get packet from each tunnel and assert it's correctly encapsulated. + out = self.pg0.get_capture(self.n_ucast_tunnels) + for pkt in out: + self.check_encapsulation(pkt, self.ucast_flood_bd, True) + payload = self.decapsulate(pkt) + self.assert_eq_pkts(payload, self.frame_reply) + + 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) + pkt = reassemble4_ether(out) + self.check_encapsulation(pkt, self.single_tunnel_vni) + + payload = self.decapsulate(pkt) + 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(TestVxlanGbp, 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 3 detail")) + self.logger.info(self.vapi.cli("show vxlan-gbp tunnel")) + self.logger.info(self.vapi.cli("show error")) + + +if __name__ == "__main__": + unittest.main(testRunner=VppTestRunner) |