diff options
Diffstat (limited to 'src/plugins/lb')
| -rw-r--r-- | src/plugins/lb/test/test_lb.py | 502 | ||||
| -rw-r--r-- | src/plugins/lb/test/test_lb_api.py | 76 | ||||
| -rw-r--r-- | src/plugins/lb/test/vpp_lb.py | 84 |
3 files changed, 662 insertions, 0 deletions
diff --git a/src/plugins/lb/test/test_lb.py b/src/plugins/lb/test/test_lb.py new file mode 100644 index 00000000000..4603bd10db8 --- /dev/null +++ b/src/plugins/lb/test/test_lb.py @@ -0,0 +1,502 @@ +import socket + +import scapy.compat +from scapy.layers.inet import IP, UDP +from scapy.layers.inet6 import IPv6 +from scapy.layers.l2 import Ether, GRE +from scapy.packet import Raw +from scapy.data import IP_PROTOS + +from framework import VppTestCase +from util import ppp +from vpp_ip_route import VppIpRoute, VppRoutePath +from vpp_ip import INVALID_INDEX + +""" TestLB is a subclass of VPPTestCase classes. + + TestLB class defines Load Balancer test cases for: + - IP4 to GRE4 encap on per-port vip case + - IP4 to GRE6 encap on per-port vip case + - IP6 to GRE4 encap on per-port vip case + - IP6 to GRE6 encap on per-port vip case + - IP4 to L3DSR encap on vip case + - IP4 to L3DSR encap on per-port vip case + - IP4 to NAT4 encap on per-port vip case + - IP6 to NAT6 encap on per-port vip case + + As stated in comments below, GRE has issues with IPv6. + All test cases involving IPv6 are executed, but + received packets are not parsed and checked. + +""" + + +class TestLB(VppTestCase): + """ Load Balancer Test Case """ + + @classmethod + def setUpClass(cls): + super(TestLB, cls).setUpClass() + + cls.ass = range(5) + cls.packets = range(1) + + 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 = VppIpRoute(cls, "10.0.0.0", 24, + [VppRoutePath(cls.pg1.remote_ip4, + INVALID_INDEX)], + register=False) + dst4.add_vpp_config() + dst6 = VppIpRoute(cls, "2002::", 16, + [VppRoutePath(cls.pg1.remote_ip6, + INVALID_INDEX)], + register=False) + dst6.add_vpp_config() + cls.vapi.lb_conf(ip4_src_address="39.40.41.42", + ip6_src_address="2004::1") + except Exception: + super(TestLB, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(TestLB, cls).tearDownClass() + + def tearDown(self): + super(TestLB, self).tearDown() + + def show_commands_at_teardown(self): + self.logger.info(self.vapi.cli("show lb 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=20000)) + + def getIPv6Flow(self, id): + return (IPv6(dst="2001::%u" % (id), src="fd00:f00d:ffff::%u" % (id)) / + UDP(sport=10000 + id, dport=20000)) + + 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, gre, isv4): + IPver = IP if isv4 else IPv6 + self.assertEqual(gre.proto, 0x0800 if isv4 else 0x86DD) + self.assertEqual(gre.flags, 0) + self.assertEqual(gre.version, 0) + inner = IPver(scapy.compat.raw(gre.payload)) + payload_info = self.payload_to_info(inner[Raw]) + self.info = self.packet_infos[payload_info.index] + self.assertEqual(payload_info.src, self.pg0.sw_if_index) + self.assertEqual(scapy.compat.raw(inner), + scapy.compat.raw(self.info.data[IPver])) + + def checkCapture(self, encap, isv4): + self.pg0.assert_nothing_captured() + out = self.pg1.get_capture(len(self.packets)) + + load = [0] * len(self.ass) + self.info = None + for p in out: + try: + asid = 0 + gre = None + if (encap == 'gre4'): + ip = p[IP] + asid = int(ip.dst.split(".")[3]) + self.assertEqual(ip.version, 4) + self.assertEqual(ip.flags, 0) + self.assertEqual(ip.src, "39.40.41.42") + self.assertEqual(ip.dst, "10.0.0.%u" % asid) + self.assertEqual(ip.proto, 47) + self.assertEqual(len(ip.options), 0) + gre = p[GRE] + self.checkInner(gre, isv4) + elif (encap == 'gre6'): + ip = p[IPv6] + asid = ip.dst.split(":") + asid = asid[len(asid) - 1] + asid = 0 if asid == "" else int(asid) + self.assertEqual(ip.version, 6) + self.assertEqual(ip.tc, 0) + self.assertEqual(ip.fl, 0) + self.assertEqual(ip.src, "2004::1") + self.assertEqual( + socket.inet_pton(socket.AF_INET6, ip.dst), + socket.inet_pton(socket.AF_INET6, "2002::%u" % asid) + ) + self.assertEqual(ip.nh, 47) + # self.assertEqual(len(ip.options), 0) + gre = GRE(scapy.compat.raw(p[IPv6].payload)) + self.checkInner(gre, isv4) + elif (encap == 'l3dsr'): + ip = p[IP] + asid = int(ip.dst.split(".")[3]) + self.assertEqual(ip.version, 4) + self.assertEqual(ip.flags, 0) + self.assertEqual(ip.dst, "10.0.0.%u" % asid) + self.assertEqual(ip.tos, 0x1c) + self.assertEqual(len(ip.options), 0) + self.assert_ip_checksum_valid(p) + if ip.proto == IP_PROTOS.tcp: + self.assert_tcp_checksum_valid(p) + elif ip.proto == IP_PROTOS.udp: + self.assert_udp_checksum_valid(p) + elif (encap == 'nat4'): + ip = p[IP] + asid = int(ip.dst.split(".")[3]) + self.assertEqual(ip.version, 4) + self.assertEqual(ip.flags, 0) + self.assertEqual(ip.dst, "10.0.0.%u" % asid) + self.assertEqual(ip.proto, 17) + self.assertEqual(len(ip.options), 0) + udp = p[UDP] + self.assertEqual(udp.dport, 3307) + elif (encap == 'nat6'): + ip = p[IPv6] + asid = ip.dst.split(":") + asid = asid[len(asid) - 1] + asid = 0 if asid == "" else int(asid) + 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" % asid) + ) + self.assertEqual(ip.nh, 17) + self.assertGreaterEqual(ip.hlim, 63) + udp = UDP(scapy.compat.raw(p[IPv6].payload)) + self.assertEqual(udp.dport, 3307) + load[asid] += 1 + except: + self.logger.error(ppp("Unexpected or invalid packet:", p)) + raise + + # This is just to roughly check that the balancing algorithm + # is not completely biased. + for asid in self.ass: + if load[asid] < len(self.packets) / (len(self.ass) * 2): + self.logger.error( + "ASS is not balanced: load[%d] = %d" % (asid, load[asid])) + raise Exception("Load Balancer algorithm is biased") + + def test_lb_ip4_gre4(self): + """ Load Balancer IP4 GRE4 on vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 encap gre4") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='gre4', isv4=True) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 encap gre4 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip6_gre4(self): + """ Load Balancer IP6 GRE4 on vip case """ + + try: + self.vapi.cli( + "lb vip 2001::/16 encap gre4") + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre4', isv4=False) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 2001::/16 encap gre4 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_gre6(self): + """ Load Balancer IP4 GRE6 on vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 encap gre6") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 2002::%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre6', isv4=True) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 2002::%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 encap gre6 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip6_gre6(self): + """ Load Balancer IP6 GRE6 on vip case """ + try: + self.vapi.cli( + "lb vip 2001::/16 encap gre6") + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 2002::%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre6', isv4=False) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 2002::%u del" + % (asid)) + self.vapi.cli( + "lb vip 2001::/16 encap gre6 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_gre4_port(self): + """ Load Balancer IP4 GRE4 on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='gre4', isv4=True) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip6_gre4_port(self): + """ Load Balancer IP6 GRE4 on per-port-vip case """ + + try: + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap gre4") + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre4', isv4=False) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap gre4 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_gre6_port(self): + """ Load Balancer IP4 GRE6 on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre6', isv4=True) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip6_gre6_port(self): + """ Load Balancer IP6 GRE6 on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap gre6") + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 2002::%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + self.checkCapture(encap='gre6', isv4=False) + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 2002::%u del" + % (asid)) + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap gre6 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_l3dsr(self): + """ Load Balancer IP4 L3DSR on vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 encap l3dsr dscp 7") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='l3dsr', isv4=True) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 encap l3dsr" + " dscp 7 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_l3dsr_port(self): + """ Load Balancer IP4 L3DSR on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr dscp 7") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='l3dsr', isv4=True) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr" + " dscp 7 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip4_nat4_port(self): + """ Load Balancer IP4 NAT4 on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4" + " type clusterip target_port 3307") + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='nat4', isv4=True) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del" + % (asid)) + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4" + " type clusterip target_port 3307 del") + self.vapi.cli("test lb flowtable flush") + + def test_lb_ip6_nat6_port(self): + """ Load Balancer IP6 NAT6 on per-port-vip case """ + try: + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap nat6" + " type clusterip target_port 3307") + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 2002::%u" + % (asid)) + + self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False)) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap='nat6', isv4=False) + + finally: + for asid in self.ass: + self.vapi.cli( + "lb as 2001::/16 protocol udp port 20000 2002::%u del" + % (asid)) + self.vapi.cli( + "lb vip 2001::/16 protocol udp port 20000 encap nat6" + " type clusterip target_port 3307 del") + self.vapi.cli("test lb flowtable flush") diff --git a/src/plugins/lb/test/test_lb_api.py b/src/plugins/lb/test/test_lb_api.py new file mode 100644 index 00000000000..70d41d432a7 --- /dev/null +++ b/src/plugins/lb/test/test_lb_api.py @@ -0,0 +1,76 @@ +# Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import framework +import ipaddress + +DEFAULT_VIP = "lb_vip_details(_0=978, context=12, vip=vl_api_lb_ip_addr_t(pfx=IPv6Network(u'::/0'), protocol=<vl_api_ip_proto_t.IP_API_PROTO_RESERVED: 255>, port=0), encap=<vl_api_lb_encap_type_t.LB_API_ENCAP_TYPE_GRE4: 0>, dscp=<vl_api_ip_dscp_t.IP_API_DSCP_CS0: 0>, srv_type=<vl_api_lb_srv_type_t.LB_API_SRV_TYPE_CLUSTERIP: 0>, target_port=0, flow_table_length=0)" # noqa + + +class TestLbEmptyApi(framework.VppTestCase): + """TestLbEmptyApi """ + + def test_lb_empty_vip_dump(self): + + # no records should normally return [], but + # lb initializes with a default VIP + rv = self.vapi.lb_vip_dump() + # print(rv) + self.assertEqual(rv, [], 'Expected: [] Received: %r.' % rv) + + def test_lb_empty_as_dump(self): + + # no records should return [] + rv = self.vapi.lb_as_dump() + # print(rv) + self.assertEqual(rv, [], 'Expected: [] Received: %r.' % rv) + + +class TestLbApi(framework.VppTestCase): + """TestLbApi """ + + def test_lb_vip_dump(self): + # add some vips + # rv = self.vapi.lb_add_del_vip(pfx=ipaddress.IPv4Network(u'1.2.3.0/24'), # noqa + # protocol=17, + # encap=0) + # print(rv) + self.vapi.cli("lb vip 2001::/16 encap gre6") + rv = self.vapi.lb_vip_dump() + # print(rv) + self.assertEqual(str(rv[-1].vip.pfx), "2001::/16", + 'Expected: 2001::/16 Received: %r.' % rv[-1].vip.pfx) + + self.vapi.cli("lb vip 2001::/16 del") + + +class TestLbAsApi(framework.VppTestCase): + """TestLbAsApi """ + + def test_lb_as_dump(self): + # add some vips + self.vapi.cli("lb vip 2001::/16 encap gre6") + self.vapi.cli("lb as 2001::/16 2000::1") + # add some as's for the vips + # rv = self.vapi.lb_add_del_as( + # pfx=ipaddress.IPv4Network(u"10.0.0.0/24"), + # as_address=ipaddress.IPv4Address(u"192.168.1.1")) + + # print(rv) + rv = self.vapi.lb_as_dump() + # print(rv) + self.assertEqual(str(rv[0].vip.pfx), "2001::/16", + 'Expected: "2001::/16" Received: %r.' % rv[0].vip.pfx) + self.assertEqual(str(rv[0].app_srv), "2000::1", + 'Expected: "2000::1" Received: %r.' % rv[0].app_srv) diff --git a/src/plugins/lb/test/vpp_lb.py b/src/plugins/lb/test/vpp_lb.py new file mode 100644 index 00000000000..d755cef70e5 --- /dev/null +++ b/src/plugins/lb/test/vpp_lb.py @@ -0,0 +1,84 @@ +# Copyright (c) 2019. Vinci Consulting Corp. All Rights Reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import vpp_object + + +class VppLbVip(vpp_object.VppObject): + + def __init__(self, test, pfx, sfx, port, protocol): + self._test = test + self.pfx = pfx + self.sfx = sfx + self.port = port + self.protocol = protocol + + def add_vpp_config(self): + self._test_vapi.lb_add_del_vip(pfx=self.pfx, + sfx=self.pfx, + port=self.port, + protocol=self.protocol) + + self._test.registry.register(self, self._test.logger) + + def remove_vpp_config(self): + self._test.vapi.lb_add_del_vip(pfx=self.pfx, + sfx=self.pfx, + port=self.port, + protocol=self.protocol, + is_del=1) + + def query_vpp_config(self): + details = self._test.vapi.lb_add_del_vip(fx=self.pfx, + sfx=self.pfx, + port=self.port, + protocol=self.protocol) + return True if self == details else False + + +class VppLbAs(vpp_object.VppObject): + def __init__(self, test, pfx, port, protocol, app_srv, is_del, is_flush): + self._test = test + # this is the vip + self.pfx = pfx + self.port = port + self.protocol = protocol + + self.app_srv = app_srv + self.is_del = is_del + self.is_flush = is_flush + + def add_vpp_config(self): + self._test_vapi.lb_add_del_as(pfx=self.pfx, + port=self.port, + protocol=self.protocol, + app_srv=self.app_srv, + is_flush=self.is_flush, + ) + + self._test.registry.register(self, self._test.logger) + + def remove_vpp_config(self): + self._test.vapi.lb_add_del_as(pfx=self.pfx, + port=self.port, + protocol=self.protocol, + app_srv=self.app_srv, + is_flush=self.is_flush, + is_del=1) + + def query_vpp_config(self): + details = self._test.vapi.lb_as_dump(pfx=self.pfx, + port=self.port, + protocol=self.protocol) + return True if self == details else False |