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Diffstat (limited to 'test/test_geneve.py')
| -rw-r--r-- | test/test_geneve.py | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/test/test_geneve.py b/test/test_geneve.py new file mode 100644 index 00000000000..9ce1f8ff643 --- /dev/null +++ b/test/test_geneve.py @@ -0,0 +1,307 @@ +#!/usr/bin/env python3 + +import socket +from util import ip4_range +import unittest +from framework import VppTestCase, VppTestRunner +from template_bd import BridgeDomain + +from scapy.layers.l2 import Ether, ARP +from scapy.layers.inet import IP, UDP, ICMP +from scapy.contrib.geneve import GENEVE + +import util +from vpp_ip_route import VppIpRoute, VppRoutePath +from vpp_ip import INVALID_INDEX + + +class TestGeneve(BridgeDomain, VppTestCase): + """ GENEVE 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 GENEVE 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) / + GENEVE(vni=vni) / + 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 GENEVE 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) / + GENEVE(vni=vni) / + pkt) + + def decapsulate(self, pkt): + """ + Decapsulate the original payload frame by removing GENEVE header + """ + # check if is set I flag + # self.assertEqual(pkt[GENEVE].flags, int('0x8', 16)) + return pkt[GENEVE].payload + + # Method for checking GENEVE 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 GENEVE 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 GENEVE 4789, source UDP port could be + # arbitrary. + self.assertEqual(pkt[UDP].dport, type(self).dport) + # TODO: checksum check + # Verify VNI + self.assertEqual(pkt[GENEVE].vni, vni) + + @classmethod + def create_geneve_flood_test_bd(cls, vni, n_ucast_tunnels): + # Create 10 ucast geneve 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_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.geneve_add_del_tunnel( + local_address=cls.pg0.local_ip4, remote_address=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 geneve ref_count mechanism + """ + n_shared_dst_tunnels = 10 + vni_start = 10000 + vni_end = vni_start + n_shared_dst_tunnels + for vni in range(vni_start, vni_end): + r = cls.vapi.geneve_add_del_tunnel( + local_address=cls.pg0.local_ip4, + remote_address=cls.mcast_ip4, mcast_sw_if_index=1, + is_add=is_add, vni=vni) + 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 geneve stability + """ + n_distinct_dst_tunnels = 10 + 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.geneve_add_del_tunnel(local_address=cls.pg0.local_ip4, + remote_address=dest_ip4, + mcast_sw_if_index=1, is_add=is_add, + vni=vni) + + @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 GENEVE 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(TestGeneve, cls).setUpClass() + + try: + cls.dport = 6081 + + # 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 GENEVE VTEP on VPP pg0, and put geneve_tunnel0 and pg1 + # into BD. + cls.single_tunnel_vni = 0xabcde + cls.single_tunnel_bd = 1 + r = cls.vapi.geneve_add_del_tunnel( + local_address=cls.pg0.local_ip4, + remote_address=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 = 2 + cls.create_geneve_flood_test_bd(cls.mcast_flood_bd, + cls.n_ucast_tunnels) + r = cls.vapi.geneve_add_del_tunnel( + local_address=cls.pg0.local_ip4, + remote_address=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 = 3 + cls.create_geneve_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(TestGeneve, cls).tearDownClass() + raise + + # 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(TestGeneve, 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 2 detail")) + self.logger.info(self.vapi.cli("show bridge-domain 3 detail")) + self.logger.info(self.vapi.cli("show geneve tunnel")) + + +class TestGeneveL3(VppTestCase): + """ GENEVE L3 Test Case """ + + @classmethod + def setUpClass(cls): + super(TestGeneveL3, cls).setUpClass() + try: + cls.create_pg_interfaces(range(2)) + cls.interfaces = list(cls.pg_interfaces) + + for i in cls.interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + except Exception: + super(TestGeneveL3, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(TestGeneveL3, cls).tearDownClass() + + def tearDown(self): + super(TestGeneveL3, self).tearDown() + + def show_commands_at_teardown(self): + self.logger.info(self.vapi.cli("show geneve tunnel")) + self.logger.info(self.vapi.cli("show ip neighbor")) + + def test_l3_packet(self): + vni = 1234 + r = self.vapi.add_node_next(node_name="geneve4-input", + next_name="ethernet-input") + r = self.vapi.geneve_add_del_tunnel2( + is_add=1, + local_address=self.pg0.local_ip4, + remote_address=self.pg0.remote_ip4, + vni=vni, + l3_mode=1, + decap_next_index=r.next_index) + + self.vapi.sw_interface_add_del_address( + sw_if_index=r.sw_if_index, prefix="10.0.0.1/24") + + pkt = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") / + IP(src='10.0.0.2', dst='10.0.0.1') / + ICMP()) + + encap = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + UDP(sport=6081, dport=6081, chksum=0) / + GENEVE(vni=vni)) + + arp = (Ether(src=self.pg0.remote_mac, dst="d0:0b:ee:d0:00:00") / + ARP(op="is-at", hwsrc=self.pg0.remote_mac, + hwdst="d0:0b:ee:d0:00:00", psrc="10.0.0.2", + pdst="10.0.0.1")) + + rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0) + rx = self.send_and_assert_no_replies(self.pg0, encap/arp*1, self.pg0) + rx = self.send_and_expect(self.pg0, encap/pkt*1, self.pg0) + self.assertEqual(rx[0][ICMP].type, 0) # echo reply + + r = self.vapi.geneve_add_del_tunnel2( + is_add=0, + local_address=self.pg0.local_ip4, + remote_address=self.pg0.remote_ip4, + vni=vni) + +if __name__ == '__main__': + unittest.main(testRunner=VppTestRunner) |