diff options
Diffstat (limited to 'test/test_kubeproxy.py')
| -rw-r--r-- | test/test_kubeproxy.py | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/test/test_kubeproxy.py b/test/test_kubeproxy.py new file mode 100644 index 00000000000..418e03adb52 --- /dev/null +++ b/test/test_kubeproxy.py @@ -0,0 +1,203 @@ +import socket +import unittest + +from scapy.layers.inet import IP, UDP +from scapy.layers.inet6 import IPv6 +from scapy.layers.l2 import Ether +from scapy.packet import Raw + +from framework import VppTestCase, running_extended_tests +from util import ppp + +""" TestKP is a subclass of VPPTestCase classes. + + TestKP class defines Four NAT test case for: + - IP4 to IP4 NAT + - IP4 to IP6 NAT + - IP6 to IP4 NAT + - IP6 to IP6 NAT + +""" + + +class TestKP(VppTestCase): + """ Kube-proxy Test Case """ + + @classmethod + def setUpClass(cls): + super(TestKP, cls).setUpClass() + cls.pods = range(5) + cls.packets = range(5) + + 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.config_ip6() + i.disable_ipv6_ra() + i.resolve_arp() + i.resolve_ndp() + dst4 = socket.inet_pton(socket.AF_INET, "10.0.0.0") + dst6 = socket.inet_pton(socket.AF_INET6, "2002::") + cls.vapi.ip_add_del_route(dst4, 24, cls.pg1.remote_ip4n) + cls.vapi.ip_add_del_route(dst6, 16, cls.pg1.remote_ip6n, is_ipv6=1) + except Exception: + super(TestKP, cls).tearDownClass() + raise + + def tearDown(self): + super(TestKP, self).tearDown() + if not self.vpp_dead: + self.logger.info(self.vapi.cli("show ku vip verbose")) + + def getIPv4Flow(self, id): + return (IP(dst="90.0.%u.%u" % (id / 255, id % 255), + src="40.0.%u.%u" % (id / 255, id % 255)) / + UDP(sport=10000 + id, dport=3306)) + + def getIPv6Flow(self, id): + return (IPv6(dst="2001::%u" % (id), src="fd00:f00d:ffff::%u" % (id)) / + UDP(sport=10000 + id, dport=3306)) + + def generatePackets(self, src_if, isv4): + self.reset_packet_infos() + pkts = [] + for pktid in self.packets: + info = self.create_packet_info(src_if, self.pg1) + payload = self.info_to_payload(info) + ip = self.getIPv4Flow(pktid) if isv4 else self.getIPv6Flow(pktid) + packet = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / + ip / + Raw(payload)) + self.extend_packet(packet, 128) + info.data = packet.copy() + pkts.append(packet) + return pkts + + def checkInner(self, udp): + self.assertEqual(udp.dport, 3307) + + def checkCapture(self, nat4, isv4): + self.pg0.assert_nothing_captured() + out = self.pg1.get_capture(len(self.packets)) + + load = [0] * len(self.pods) + self.info = None + for p in out: + try: + podid = 0 + udp = None + if nat4: + ip = p[IP] + podid = int(ip.dst.split(".")[3]) + self.assertEqual(ip.version, 4) + self.assertEqual(ip.flags, 0) + self.assertEqual(ip.dst, "10.0.0.%u" % podid) + self.assertEqual(ip.proto, 17) + self.assertEqual(len(ip.options), 0) + self.assertGreaterEqual(ip.ttl, 63) + udp = p[UDP] + else: + ip = p[IPv6] + podid = ip.dst.split(":") + podid = podid[len(podid) - 1] + podid = 0 if podid == "" else int(podid) + self.assertEqual(ip.version, 6) + self.assertEqual(ip.tc, 0) + self.assertEqual(ip.fl, 0) + self.assertEqual( + socket.inet_pton(socket.AF_INET6, ip.dst), + socket.inet_pton(socket.AF_INET6, "2002::%u" % podid) + ) + self.assertEqual(ip.nh, 17) + self.assertGreaterEqual(ip.hlim, 63) + udp = UDP(str(p[IPv6].payload)) + # self.assertEqual(len(ip.options), 0) + self.checkInner(udp) + load[podid] += 1 + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # This is just to roughly check that the balancing algorithm + # is not completly biased. + for podid in self.pods: + if load[podid] < len(self.packets) / (len(self.pods) * 2): + self.log( + "Pod isn't balanced: load[%d] = %d" % (podid, load[podid])) + raise Exception("Kube-proxy algorithm is biased") + + def test_kp_ip4_nat4(self): + """ Kube-proxy NAT44 """ + try: + self.vapi.cli("ku vip 90.0.0.0/8 port 3306 target_port 3307 nat4") + for podid in self.pods: + self.vapi.cli("ku pod 90.0.0.0/8 10.0.0.%u" % (podid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(nat4=True, isv4=True) + + finally: + for podid in self.pods: + self.vapi.cli("ku pod 90.0.0.0/8 10.0.0.%u del" % (podid)) + self.vapi.cli("ku vip 90.0.0.0/8 nat4 del") + + @unittest.skipUnless(running_extended_tests(), "part of extended tests") + def test_kp_ip6_nat4(self): + """ Kube-proxy NAT64 """ + + try: + self.vapi.cli("ku vip 90.0.0.0/8 port 3306 target_port 3307 nat4") + for podid in self.pods: + self.vapi.cli("ku pod 2001::/16 10.0.0.%u" % (podid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(nat4=True, isv4=False) + finally: + for podid in self.pods: + self.vapi.cli("ku pod 2001::/16 10.0.0.%u del" % (podid)) + self.vapi.cli("ku vip 2001::/16 nat4 del") + + @unittest.skipUnless(running_extended_tests(), "part of extended tests") + def test_kp_ip4_nat6(self): + """ Kube-proxy NAT46 """ + try: + self.vapi.cli("ku vip 90.0.0.0/8 port 3306 target_port 3307 nat6") + for podid in self.pods: + self.vapi.cli("ku pod 90.0.0.0/8 2002::%u" % (podid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(nat4=False, isv4=True) + finally: + for podid in self.pods: + self.vapi.cli("ku pod 90.0.0.0/8 2002::%u" % (podid)) + self.vapi.cli("ku vip 90.0.0.0/8 nat6 del") + + @unittest.skipUnless(running_extended_tests(), "part of extended tests") + def test_kp_ip6_nat6(self): + """ Kube-proxy NAT66 """ + try: + self.vapi.cli("ku vip 90.0.0.0/8 port 3306 target_port 3307 nat6") + for podid in self.pods: + self.vapi.cli("ku pod 2001::/16 2002::%u" % (podid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(nat4=False, isv4=False) + finally: + for podid in self.pods: + self.vapi.cli("ku pod 2001::/16 2002::%u del" % (podid)) + self.vapi.cli("ku vip 2001::/16 nat6 del") |