tests: move test source to vpp/test

- Generate copyright year and version
  instead of using hard-coded data

Type: refactor

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e

1 files changed, 502 insertions, 0 deletions

diff --git a/test/test_lb.py b/test/test_lb.py
new file mode 100644
index 00000000000..fafb87b62d9
--- /dev/null
+++ b/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] < int(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")