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#!/usr/bin/env python
from framework import VppTestCase
from ipaddress import IPv4Address
from ipaddress import IPv6Address
from scapy.contrib.gtp import *
from scapy.all import *
class TestSRv6EndMGTP4E(VppTestCase):
""" SRv6 End.M.GTP4.E (SRv6 -> GTP-U) """
@classmethod
def setUpClass(cls):
super(TestSRv6EndMGTP4E, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
cls.pg_if_i = cls.pg_interfaces[0]
cls.pg_if_o = cls.pg_interfaces[1]
cls.pg_if_i.config_ip6()
cls.pg_if_o.config_ip4()
cls.ip4_dst = cls.pg_if_o.remote_ip4
# cls.ip4_src = cls.pg_if_o.local_ip4
cls.ip4_src = "192.168.192.10"
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_arp()
except Exception:
super(TestSRv6EndMGTP4E, cls).tearDownClass()
raise
def create_packets(self, inner):
ip4_dst = IPv4Address(str(self.ip4_dst))
# 32bit prefix + 32bit IPv4 DA + 8bit + 32bit TEID + 24bit
dst = b'\xaa' * 4 + ip4_dst.packed + \
b'\x11' + b'\xbb' * 4 + b'\x11' * 3
ip6_dst = IPv6Address(dst)
ip4_src = IPv4Address(str(self.ip4_src))
# 64bit prefix + 32bit IPv4 SA + 16 bit port + 16bit
src = b'\xcc' * 8 + ip4_src.packed + \
b'\xdd' * 2 + b'\x11' * 2
ip6_src = IPv6Address(src)
self.logger.info("ip4 dst: {}".format(ip4_dst))
self.logger.info("ip4 src: {}".format(ip4_src))
self.logger.info("ip6 dst (remote srgw): {}".format(ip6_dst))
self.logger.info("ip6 src (local srgw): {}".format(ip6_src))
pkts = list()
for d, s in inner:
pkt = (Ether() /
IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
IPv6ExtHdrSegmentRouting() /
IPv6(dst=d, src=s) /
UDP(sport=1000, dport=23))
self.logger.info(pkt.show2())
pkts.append(pkt)
return pkts
def test_srv6_end(self):
""" test_srv6_end """
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
self.vapi.cli(
"sr localsid address {} behavior end.m.gtp4.e v4src_position 64"
.format(pkts[0]['IPv6'].dst))
self.logger.info(self.vapi.cli("show sr localsids"))
self.vapi.cli("clear errors")
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.logger.info(self.vapi.cli("show errors"))
self.logger.info(self.vapi.cli("show int address"))
capture = self.pg1.get_capture(len(pkts))
for pkt in capture:
self.logger.info(pkt.show2())
self.assertEqual(pkt[IP].dst, self.ip4_dst)
self.assertEqual(pkt[IP].src, self.ip4_src)
self.assertEqual(pkt[GTP_U_Header].teid, 0xbbbbbbbb)
class TestSRv6TMTmap(VppTestCase):
""" SRv6 T.M.Tmap (GTP-U -> SRv6) """
@classmethod
def setUpClass(cls):
super(TestSRv6TMTmap, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
cls.pg_if_i = cls.pg_interfaces[0]
cls.pg_if_o = cls.pg_interfaces[1]
cls.pg_if_i.config_ip4()
cls.pg_if_o.config_ip6()
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_arp()
except Exception:
super(TestSRv6TMTmap, cls).tearDownClass()
raise
class TestSRv6EndMGTP6E(VppTestCase):
""" SRv6 End.M.GTP6.E """
@classmethod
def setUpClass(cls):
super(TestSRv6EndMGTP6E, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
cls.pg_if_i = cls.pg_interfaces[0]
cls.pg_if_o = cls.pg_interfaces[1]
cls.pg_if_i.config_ip4()
cls.pg_if_o.config_ip6()
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_arp()
except Exception:
super(TestSRv6EndMGTP6E, cls).tearDownClass()
raise
class TestSRv6EndMGTP6D(VppTestCase):
""" SRv6 End.M.GTP6.D """
@classmethod
def setUpClass(cls):
super(TestSRv6EndMGTP6D, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
cls.pg_if_i = cls.pg_interfaces[0]
cls.pg_if_o = cls.pg_interfaces[1]
cls.pg_if_i.config_ip4()
cls.pg_if_o.config_ip6()
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_arp()
except Exception:
super(TestSRv6EndMGTP6D, cls).tearDownClass()
raise
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