index : vpp	master stable/1606 stable/1609 stable/1701 stable/1704 stable/1707 stable/1710 stable/1801 stable/1804 stable/1807 stable/1810 stable/1901 stable/1904 stable/1908 stable/2001 stable/2005 stable/2009 stable/2101 stable/2106 stable/2110 stable/2202 stable/2206 stable/2210 stable/2302 stable/2306 stable/2310 stable/2402 stable/2406 stable/2410 stable/test
	Vector Packet Processing	Grokmirror user

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path: root/test/test_lisp.py

Age	Commit message (Expand)	Author	Files	Lines
2018-11-24	VPP-1505 VPP-1508 Remove dep.: py_lispnetworking	Paul Vinciguerra	1	-3/+21
2017-02-23	Remove prints from LISP test	Filip Tehlar	1	-5/+0
2017-02-21	Add basic 4o4 LISP unit test	Filip Tehlar	1	-0/+171

© 2016 FD.io a Linux Foundation Collaborative Project. All Rights Reserved.

Linux Foundation is a registered trademark of The Linux Foundation. Linux is a registered trademark of Linus Torvalds.

Please see our privacy policy and terms of use

import socket

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

""" 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 = 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")
        except Exception:
            super(TestLB, cls).tearDownClass()
            raise

    def tearDown(self):
        super(TestLB, self).tearDown()
        if not self.vpp_dead:
            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(str(gre.payload))
        payload_info = self.payload_to_info(str(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]))

    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(str(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(str(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 1roughly check that the balancing algorithm
        # is not completly 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")