vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2016-09-21	Copy the 16.09 release notes to master	Chris Luke	1	-0/+200
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
#!/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)