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authorAndrew Yourtchenko <ayourtch@gmail.com>2020-01-11 17:57:31 +0000
committerPaul Vinciguerra <pvinci@vinciconsulting.com>2020-01-13 14:55:07 +0000
commitf63bf6a7d70fcd6595eb0a48ac0ea5088580f220 (patch)
treecd6ae1847e6c945e124b3c452ee66d9106d8dc6a /extras/apps/.gitignore
parent1c6486f7b8a00a1358d5c8f4ea1d874073bbcd6c (diff)
tests: disable the tap test for the time being
TAP tests require root access, which breaks the testing in unprivileged scenario. Disable the test until we find consensus on how to deal with it. Type: test Change-Id: I66ee2b130723233682d858cad0b6e424ab0b2383 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Diffstat (limited to 'extras/apps/.gitignore')
0 files changed, 0 insertions, 0 deletions
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#!/usr/bin/env python

import socket
import unittest
from framework import VppTestCase, VppTestRunner
from template_bd import BridgeDomain

from scapy.layers.l2 import Ether
from scapy.layers.inet6 import IPv6, UDP
from scapy.layers.vxlan import VXLAN
from scapy.utils import atol


class TestVxlan6(BridgeDomain, VppTestCase):
    """ VXLAN over IPv6 Test Case """

    def __init__(self, *args):
        BridgeDomain.__init__(self)
        VppTestCase.__init__(self, *args)

    def encapsulate(self, pkt, vni):
        """
        Encapsulate the original payload frame by adding VXLAN header with its
        UDP, IP and Ethernet fields
        """
        return (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
                IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
                UDP(sport=self.dport, dport=self.dport, chksum=0) /
                VXLAN(vni=vni, flags=self.flags) /
                pkt)

    @classmethod
    def ip_range(cls, s, e):
        """ range of remote ip's """
        tmp = cls.pg0.remote_ip6.rsplit(':', 1)[0]
        return ("%s:%x" % (tmp, i) for i in range(s, e))

    def encap_mcast(self, pkt, src_ip, src_mac, vni):
        """
        Encapsulate the original payload frame by adding VXLAN header with its
        UDP, IP and Ethernet fields
        """
        return (Ether(src=src_mac, dst=self.mcast_mac) /
                IPv6(src=src_ip, dst=self.mcast_ip6) /
                UDP(sport=self.dport, dport=self.dport, chksum=0) /
                VXLAN(vni=vni, flags=self.flags) /
                pkt)

    def decapsulate(self, pkt):
        """
        Decapsulate the original payload frame by removing VXLAN header
        """
        # check if is set I flag
        self.assertEqual(pkt[VXLAN].flags, int('0x8', 16))
        return pkt[VXLAN].payload

    # Method for checking VXLAN encapsulation.
    #
    def check_encapsulation(self, pkt, vni, local_only=False, mcast_pkt=False):
        # TODO: add error messages
        # Verify source MAC is VPP_MAC and destination MAC is MY_MAC resolved
        #  by VPP using ARP.
        self.assertEqual(pkt[Ether].src, self.pg0.local_mac)
        if not local_only:
            if not mcast_pkt:
                self.assertEqual(pkt[Ether].dst, self.pg0.remote_mac)
            else:
                self.assertEqual(pkt[Ether].dst, type(self).mcast_mac)
        # Verify VXLAN tunnel source IP is VPP_IP and destination IP is MY_IP.
        self.assertEqual(pkt[IPv6].src, self.pg0.local_ip6)
        if not local_only:
            if not mcast_pkt:
                self.assertEqual(pkt[IPv6].dst, self.pg0.remote_ip6)
            else:
                self.assertEqual(pkt[IPv6].dst, type(self).mcast_ip6)
        # Verify UDP destination port is VXLAN 4789, source UDP port could be
        #  arbitrary.
        self.assertEqual(pkt[UDP].dport, type(self).dport)
        # TODO: checksum check
        # Verify VNI
        self.assertEqual(pkt[VXLAN].vni, vni)

    @classmethod
    def create_vxlan_flood_test_bd(cls, vni, n_ucast_tunnels):
        # Create 10 ucast vxlan tunnels under bd
        start = 10
        end = start + n_ucast_tunnels
        next_hop = cls.pg0.remote_ip6n
        for dest_ip6 in cls.ip_range(start, end):
            dest_ip6n = socket.inet_pton(socket.AF_INET6, dest_ip6)
            # add host route so dest ip will not be resolved
            cls.vapi.ip_add_del_route(dest_ip6n, 128, next_hop, is_ipv6=1)
            r = cls.vapi.vxlan_add_del_tunnel(
                is_ipv6=1,
                src_addr=cls.pg0.local_ip6n,
                dst_addr=dest_ip6n,
                vni=vni)
            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index, bd_id=vni)

    @classmethod
    def add_mcast_tunnels_load(cls):
        cls.add_del_mcast_tunnels_load(is_add=1)

    @classmethod
    def del_mcast_tunnels_load(cls):
        cls.add_del_mcast_tunnels_load(is_add=0)

    # Class method to start the VXLAN test case.
    #  Overrides setUpClass method in VppTestCase class.
    #  Python try..except statement is used to ensure that the tear down of
    #  the class will be executed even if exception is raised.
    #  @param cls The class pointer.
    @classmethod
    def setUpClass(cls):
        super(TestVxlan6, cls).setUpClass()

        try:
            cls.dport = 4789
            cls.flags = 0x8

            # Create 2 pg interfaces.
            cls.create_pg_interfaces(range(4))
            for pg in cls.pg_interfaces:
                pg.admin_up()

            # Configure IPv4 addresses on VPP pg0.
            cls.pg0.config_ip6()

            # Resolve MAC address for VPP's IP address on pg0.
            cls.pg0.resolve_ndp()

            cls.mcast_ip6 = 'ff0e::1'
            cls.mcast_ip6n = socket.inet_pton(socket.AF_INET6, cls.mcast_ip6)
            cls.mcast_mac = "33:33:00:00:00:%02x" % (1)

            # Create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg1
            #  into BD.
            cls.single_tunnel_bd = 1
            r = cls.vapi.vxlan_add_del_tunnel(
                is_ipv6=1,
                src_addr=cls.pg0.local_ip6n,
                dst_addr=cls.pg0.remote_ip6n,
                vni=cls.single_tunnel_bd)
            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
                                                bd_id=cls.single_tunnel_bd)
            cls.vapi.sw_interface_set_l2_bridge(cls.pg1.sw_if_index,
                                                bd_id=cls.single_tunnel_bd)

            # Setup vni 2 to test multicast flooding
            cls.n_ucast_tunnels = 10
            cls.mcast_flood_bd = 2
            cls.create_vxlan_flood_test_bd(cls.mcast_flood_bd,
                                           cls.n_ucast_tunnels)
            r = cls.vapi.vxlan_add_del_tunnel(
                mcast_sw_if_index=1,
                src_addr=cls.pg0.local_ip6n,
                dst_addr=cls.mcast_ip6n,
                vni=cls.mcast_flood_bd, is_ipv6=1)
            cls.vapi.sw_interface_set_l2_bridge(r.sw_if_index,
                                                bd_id=cls.mcast_flood_bd)
            cls.vapi.sw_interface_set_l2_bridge(cls.pg2.sw_if_index,
                                                bd_id=cls.mcast_flood_bd)

            # Setup vni 3 to test unicast flooding
            cls.ucast_flood_bd = 3
            cls.create_vxlan_flood_test_bd(cls.ucast_flood_bd,
                                           cls.n_ucast_tunnels)
            cls.vapi.sw_interface_set_l2_bridge(cls.pg3.sw_if_index,
                                                bd_id=cls.ucast_flood_bd)
        except Exception:
            super(TestVxlan6, cls).tearDownClass()
            raise

    # Method to define VPP actions before tear down of the test case.
    #  Overrides tearDown method in VppTestCase class.
    #  @param self The object pointer.
    def tearDown(self):
        super(TestVxlan6, self).tearDown()
        if not self.vpp_dead:
            self.logger.info(self.vapi.cli("show bridge-domain 1 detail"))
            self.logger.info(self.vapi.cli("show bridge-domain 2 detail"))
            self.logger.info(self.vapi.cli("show bridge-domain 3 detail"))
            self.logger.info(self.vapi.cli("show vxlan tunnel"))


if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)