X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_lb.py;h=6e8d82dfe40f480b77cea044ec717c4d7f9e4dca;hb=e77af765e2c4eb2e1eb858c48441b1f236ed41f9;hp=d2e7185cf3f91a90d2d40eeb06de8e5fedfb57f7;hpb=6fb0d9b269057a40b6979c741f8c1187b653d12d;p=vpp.git diff --git a/test/test_lb.py b/test/test_lb.py index d2e7185cf3f..6e8d82dfe40 100644 --- a/test/test_lb.py +++ b/test/test_lb.py @@ -1,5 +1,6 @@ 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 @@ -8,17 +9,21 @@ 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 - - IP4 to GRE6 encap - - IP6 to GRE4 encap - - IP6 to GRE6 encap - - IP4 to L3DSR encap - - IP4 to NAT4 encap - - IP6 to NAT6 encap + - 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 L3DSR encap on per-port vip with src_ip_sticky 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 @@ -28,7 +33,7 @@ from util import ppp class TestLB(VppTestCase): - """ Load Balancer Test Case """ + """Load Balancer Test Case""" @classmethod def setUpClass(cls): @@ -48,29 +53,48 @@ class TestLB(VppTestCase): 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) - cls.vapi.cli("lb conf ip4-src-address 39.40.41.42") - cls.vapi.cli("lb conf ip6-src-address 2004::1") + + 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() - if not self.vpp_dead: - self.logger.info(self.vapi.cli("show lb vip verbose")) + + 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 + 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 + 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() @@ -79,9 +103,9 @@ class TestLB(VppTestCase): 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)) + 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) @@ -92,23 +116,26 @@ class TestLB(VppTestCase): self.assertEqual(gre.proto, 0x0800 if isv4 else 0x86DD) self.assertEqual(gre.flags, 0) self.assertEqual(gre.version, 0) - inner = IPver(str(gre.payload)) - payload_info = self.payload_to_info(str(inner[Raw])) + 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(str(inner), str(self.info.data[IPver])) + self.assertEqual( + scapy.compat.raw(inner), scapy.compat.raw(self.info.data[IPver]) + ) - def checkCapture(self, encap, isv4): + def checkCapture(self, encap, isv4, src_ip_sticky=False): self.pg0.assert_nothing_captured() out = self.pg1.get_capture(len(self.packets)) load = [0] * len(self.ass) + sticky_as = {} self.info = None for p in out: try: asid = 0 gre = None - if (encap == 'gre4'): + if encap == "gre4": ip = p[IP] asid = int(ip.dst.split(".")[3]) self.assertEqual(ip.version, 4) @@ -117,10 +144,9 @@ class TestLB(VppTestCase): self.assertEqual(ip.dst, "10.0.0.%u" % asid) self.assertEqual(ip.proto, 47) self.assertEqual(len(ip.options), 0) - self.assertGreaterEqual(ip.ttl, 64) gre = p[GRE] self.checkInner(gre, isv4) - elif (encap == 'gre6'): + elif encap == "gre6": ip = p[IPv6] asid = ip.dst.split(":") asid = asid[len(asid) - 1] @@ -131,27 +157,26 @@ class TestLB(VppTestCase): 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) + socket.inet_pton(socket.AF_INET6, "2002::%u" % asid), ) self.assertEqual(ip.nh, 47) - self.assertGreaterEqual(ip.hlim, 64) # self.assertEqual(len(ip.options), 0) - gre = GRE(str(p[IPv6].payload)) + gre = GRE(scapy.compat.raw(p[IPv6].payload)) self.checkInner(gre, isv4) - elif (encap == 'l3dsr'): + 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(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'): + elif encap == "nat4": ip = p[IP] asid = int(ip.dst.split(".")[3]) self.assertEqual(ip.version, 4) @@ -159,10 +184,9 @@ class TestLB(VppTestCase): self.assertEqual(ip.dst, "10.0.0.%u" % asid) self.assertEqual(ip.proto, 17) self.assertEqual(len(ip.options), 0) - self.assertGreaterEqual(ip.ttl, 63) udp = p[UDP] self.assertEqual(udp.dport, 3307) - elif (encap == 'nat6'): + elif encap == "nat6": ip = p[IPv6] asid = ip.dst.split(":") asid = asid[len(asid) - 1] @@ -172,27 +196,35 @@ class TestLB(VppTestCase): self.assertEqual(ip.fl, 0) self.assertEqual( socket.inet_pton(socket.AF_INET6, ip.dst), - socket.inet_pton(socket.AF_INET6, "2002::%u" % asid) + socket.inet_pton(socket.AF_INET6, "2002::%u" % asid), ) self.assertEqual(ip.nh, 17) self.assertGreaterEqual(ip.hlim, 63) - udp = UDP(str(p[IPv6].payload)) + udp = UDP(scapy.compat.raw(p[IPv6].payload)) self.assertEqual(udp.dport, 3307) load[asid] += 1 + + # In case of source ip sticky, check that packets with same + # src_ip are routed to same as. + if src_ip_sticky and sticky_as.get(ip.src, asid) != asid: + raise Exception("Packets with same src_ip are routed to another as") + sticky_as[ip.src] = asid + 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. + # is not completely biased. for asid in self.ass: - if load[asid] < len(self.packets) / (len(self.ass) * 2): + if load[asid] < int(len(self.packets) / (len(self.ass) * 2)): self.logger.error( - "ASS is not balanced: load[%d] = %d" % (asid, load[asid])) + "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 """ + """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: @@ -201,7 +233,7 @@ class TestLB(VppTestCase): 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) + self.checkCapture(encap="gre4", isv4=True) finally: for asid in self.ass: @@ -210,7 +242,7 @@ class TestLB(VppTestCase): self.vapi.cli("test lb flowtable flush") def test_lb_ip6_gre4(self): - """ Load Balancer IP6 GRE4 """ + """Load Balancer IP6 GRE4 on vip case""" try: self.vapi.cli("lb vip 2001::/16 encap gre4") @@ -221,7 +253,7 @@ class TestLB(VppTestCase): self.pg_enable_capture(self.pg_interfaces) self.pg_start() - self.checkCapture(encap='gre4', isv4=False) + 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)) @@ -229,7 +261,7 @@ class TestLB(VppTestCase): self.vapi.cli("test lb flowtable flush") def test_lb_ip4_gre6(self): - """ Load Balancer IP4 GRE6 """ + """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: @@ -239,7 +271,7 @@ class TestLB(VppTestCase): self.pg_enable_capture(self.pg_interfaces) self.pg_start() - self.checkCapture(encap='gre6', isv4=True) + 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)) @@ -247,7 +279,7 @@ class TestLB(VppTestCase): self.vapi.cli("test lb flowtable flush") def test_lb_ip6_gre6(self): - """ Load Balancer IP6 GRE6 """ + """Load Balancer IP6 GRE6 on vip case""" try: self.vapi.cli("lb vip 2001::/16 encap gre6") for asid in self.ass: @@ -257,15 +289,104 @@ class TestLB(VppTestCase): self.pg_enable_capture(self.pg_interfaces) self.pg_start() - self.checkCapture(encap='gre6', isv4=False) + 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 """ + """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: @@ -274,7 +395,7 @@ class TestLB(VppTestCase): 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) + self.checkCapture(encap="l3dsr", isv4=True) finally: for asid in self.ass: @@ -282,42 +403,115 @@ class TestLB(VppTestCase): 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_nat4(self): - """ Load Balancer IP4 NAT4 """ + 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 encap nat4" - " type clusterip port 3306 target_port 3307") + 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 10.0.0.%u" % (asid)) + 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) + 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 nat4" - " type clusterip port 3306 target_port 3307 del") + 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_ip6_nat6(self): - """ Load Balancer IP6 NAT6 """ + def test_lb_ip4_l3dsr_port_src_ip_sticky(self): + """Load Balancer IP4 L3DSR on per-port-vip with src_ip_sticky case""" try: - self.vapi.cli("lb vip 2001::/16 encap nat6" - " type clusterip port 3306 target_port 3307") + self.vapi.cli( + "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr dscp 7 src_ip_sticky" + ) for asid in self.ass: - self.vapi.cli("lb as 2001::/16 2002::%u" % (asid)) + self.vapi.cli( + "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u" % (asid) + ) + + # Generate duplicated packets + pkts = self.generatePackets(self.pg0, isv4=True) + pkts = pkts[: len(pkts) // 2] + pkts = pkts + pkts + + self.pg0.add_stream(pkts) + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + self.checkCapture(encap="l3dsr", isv4=True, src_ip_sticky=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 src_ip_sticky 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) + self.checkCapture(encap="nat6", 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 nat6" - " type clusterip port 3306 target_port 3307 del") + 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")