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#!/usr/bin/env python3
from framework import VppTestCase
from ipaddress import IPv4Address
from ipaddress import IPv6Address
from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable
from vpp_srv6_mobile import (
SRv6MobileNhtype,
VppSRv6MobilePolicy,
VppSRv6MobileLocalSID,
)
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(dump=True))
pkts.append(pkt)
return pkts
def test_srv6_mobile(self):
"""test_srv6_mobile"""
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
# "sr localsid address {} behavior end.m.gtp4.e v4src_position 64 fib-table 0"
# ".format(pkts[0]["IPv6"].dst)
localsid = VppSRv6MobileLocalSID(
self,
# address params case is length 0
localsid_prefix="{}/{}".format(pkts[0]["IPv6"].dst, 0),
behavior="end.m.gtp4.e",
v4src_position=64,
fib_table=0,
)
localsid.add_vpp_config()
# log the localsids
self.logger.info(self.vapi.cli("show sr localsid"))
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(dump=True))
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 TestSRv6TMGTP4D(VppTestCase):
"""SRv6 T.M.GTP4.D (GTP-U -> SRv6)"""
@classmethod
def setUpClass(cls):
super(TestSRv6TMGTP4D, 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_i.config_ip6()
cls.pg_if_o.config_ip4()
cls.pg_if_o.config_ip6()
cls.ip4_dst = "1.1.1.1"
cls.ip4_src = "2.2.2.2"
cls.ip6_dst = cls.pg_if_o.remote_ip6
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_arp()
pg_if.resolve_ndp(timeout=5)
except Exception:
super(TestSRv6TMGTP4D, cls).tearDownClass()
raise
def create_packets(self, inner):
ip4_dst = IPv4Address(str(self.ip4_dst))
ip4_src = IPv4Address(str(self.ip4_src))
self.logger.info("ip4 dst: {}".format(ip4_dst))
self.logger.info("ip4 src: {}".format(ip4_src))
pkts = list()
for d, s in inner:
pkt = (
Ether()
/ IP(dst=str(ip4_dst), src=str(ip4_src))
/ UDP(sport=2152, dport=2152)
/ GTP_U_Header(gtp_type="g_pdu", teid=200)
/ IPv6(dst=d, src=s)
/ UDP(sport=1000, dport=23)
)
self.logger.info(pkt.show2(dump=True))
pkts.append(pkt)
return pkts
def test_srv6_mobile(self):
"""test_srv6_mobile"""
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
self.vapi.cli("set sr encaps source addr A1::1")
self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
# sr policy add bsid D5:: behavior t.m.gtp4.d D4::/32 v6src_prefix C1::/64 nhtype ipv6 fib-table 0 drop-in
policy = VppSRv6MobilePolicy(
self,
bsid_addr="D5::",
behavior="t.m.gtp4.d",
sr_prefix="{}/{}".format("D4::", 32),
v6src_prefix="{}/{}".format("C1::", 64),
nhtype=SRv6MobileNhtype.SRV6_NHTYPE_API_IPV6,
fib_table=0,
drop_in=1,
)
policy.add_vpp_config()
self.vapi.cli("sr steer l3 {}/32 via bsid D5::".format(self.ip4_dst))
# "ip route add D2::/32 via {}".format(self.ip6_dst)
route = VppIpRoute(
self, "D2::", 32, [VppRoutePath(self.ip6_dst, self.pg1.sw_if_index)]
)
route.add_vpp_config()
self.logger.info(self.vapi.cli("show ip6 fib"))
self.logger.info(self.vapi.cli("show sr steer"))
self.logger.info(self.vapi.cli("show sr policies"))
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(dump=True))
self.logger.info(
"GTP4.D Address={}".format(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[0])
)
)
self.assertEqual(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]), "d4:0:101:101::c800:0"
)
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_ip6()
cls.pg_if_o.config_ip6()
cls.ip6_nhop = cls.pg_if_o.remote_ip6
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_ndp(timeout=5)
except Exception:
super(TestSRv6EndMGTP6E, cls).tearDownClass()
raise
def create_packets(self, inner):
# 64bit prefix + 8bit QFI + 32bit TEID + 24bit
dst = b"\xaa" * 8 + b"\x00" + b"\xbb" * 4 + b"\x00" * 3
ip6_dst = IPv6Address(dst)
self.ip6_dst = ip6_dst
src = b"\xcc" * 8 + b"\xdd" * 4 + b"\x11" * 4
ip6_src = IPv6Address(src)
self.ip6_src = ip6_src
pkts = list()
for d, s in inner:
pkt = (
Ether()
/ IPv6(dst=str(ip6_dst), src=str(ip6_src))
/ IPv6ExtHdrSegmentRouting(
segleft=1, lastentry=0, tag=0, addresses=["a1::1"]
)
/ IPv6(dst=d, src=s)
/ UDP(sport=1000, dport=23)
)
self.logger.info(pkt.show2(dump=True))
pkts.append(pkt)
return pkts
def test_srv6_mobile(self):
"""test_srv6_mobile"""
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
# "sr localsid prefix {}/64 behavior end.m.gtp6.e fib-table 0"
# .format(pkts[0]["IPv6"].dst)
localsid = VppSRv6MobileLocalSID(
self,
localsid_prefix="{}/{}".format(pkts[0]["IPv6"].dst, 64),
behavior="end.m.gtp6.e",
fib_table=0,
)
localsid.add_vpp_config()
# "ip route add a1::/64 via {}".format(self.ip6_nhop)
route = VppIpRoute(
self, "a1::", 64, [VppRoutePath(self.ip6_nhop, self.pg1.sw_if_index)]
)
route.add_vpp_config()
self.logger.info(self.vapi.cli("show sr localsid"))
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(dump=True))
self.assertEqual(pkt[IPv6].dst, "a1::1")
self.assertEqual(pkt[IPv6].src, str(self.ip6_src))
self.assertEqual(pkt[GTP_U_Header].teid, 0xBBBBBBBB)
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_ip6()
cls.pg_if_o.config_ip6()
cls.ip6_nhop = cls.pg_if_o.remote_ip6
cls.ip6_dst = "2001::1"
cls.ip6_src = "2002::1"
for pg_if in cls.pg_interfaces:
pg_if.admin_up()
pg_if.resolve_ndp(timeout=5)
except Exception:
super(TestSRv6EndMGTP6D, cls).tearDownClass()
raise
def create_packets(self, inner):
ip6_dst = IPv6Address(str(self.ip6_dst))
ip6_src = IPv6Address(str(self.ip6_src))
self.logger.info("ip6 dst: {}".format(ip6_dst))
self.logger.info("ip6 src: {}".format(ip6_src))
pkts = list()
for d, s in inner:
pkt = (
Ether()
/ IPv6(dst=str(ip6_dst), src=str(ip6_src))
/ UDP(sport=2152, dport=2152)
/ GTP_U_Header(gtp_type="g_pdu", teid=200)
/ IPv6(dst=d, src=s)
/ UDP(sport=1000, dport=23)
)
self.logger.info(pkt.show2(dump=True))
pkts.append(pkt)
return pkts
def test_srv6_mobile(self):
"""test_srv6_mobile"""
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
self.vapi.cli("set sr encaps source addr A1::1")
self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
# "sr localsid prefix 2001::/64 behavior end.m.gtp6.d 4::/64 fib-table 0 drop-in"
# .format(self.ip6_nhop)
localsid = VppSRv6MobileLocalSID(
self,
localsid_prefix="{}/{}".format("2001::", 64),
behavior="end.m.gtp6.d",
fib_table=0,
drop_in=1,
sr_prefix="{}/{}".format("D4::", 64),
)
localsid.add_vpp_config()
# "ip route add D2::/64 via {}"
# .format(self.ip6_nhop))
route = VppIpRoute(
self, "D2::", 64, [VppRoutePath(self.ip6_nhop, self.pg1.sw_if_index)]
)
route.add_vpp_config()
self.logger.info(self.vapi.cli("show sr policies"))
self.logger.info(self.vapi.cli("show sr localsid"))
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(dump=True))
self.logger.info(
"GTP6.D SID0={}".format(str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]))
)
self.logger.info(
"GTP6.D SID1={}".format(str(pkt[IPv6ExtHdrSegmentRouting].addresses[1]))
)
self.assertEqual(str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]), "2001::1")
self.assertEqual(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[1]), "d4::c800:0"
)
|
