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#
# IP{4,6} over IP{v,6} tunnel functional tests
#
import unittest
from scapy.layers.inet import IP, UDP, ICMP
from scapy.layers.inet6 import IPv6
from scapy.layers.l2 import Ether, GRE
from scapy.packet import Raw
from framework import VppTestCase
from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
from util import ppp
from ipaddress import *
""" Testipip is a subclass of VPPTestCase classes.
IPIP tests.
"""
class TestIPIP(VppTestCase):
""" IPIP Test Case """
@classmethod
def setUpClass(cls):
super(TestIPIP, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
cls.interfaces = list(cls.pg_interfaces)
except Exception:
super(TestIPIP, cls).tearDownClass()
raise
def setUp(cls):
super(TestIPIP, cls).setUp()
try:
for i in cls.interfaces:
i.admin_up()
i.config_ip4()
i.config_ip6()
i.disable_ipv6_ra()
i.resolve_arp()
i.resolve_ndp()
except Exception:
super(TestIPIP, cls).tearDown()
raise
def tearDown(self):
super(TestIPIP, self).tearDown()
if not self.vpp_dead:
self.vapi.cli("show hardware")
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.admin_down()
self.vapi.cli("show error")
def validate(self, rx, expected):
expected = expected.__class__(str(expected))
if rx != expected:
print('RX packet:')
print(rx.show())
print('EXPECTED packet:')
print(expected.show())
self.assertDictEqual(rx, expected)
def payload(self, len):
return 'x' * len
def test_ipip4(self):
""" ip{v4,v6} over ip4 test """
p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP')
p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1")
p_payload = UDP(sport=1234, dport=1234)
# IPv4 transport
rv = self.vapi.ipip_add_tunnel(
src_address=str(ip_address(self.pg0.local_ip4).packed),
dst_address=str(ip_address(self.pg1.remote_ip4).packed),
is_ipv6=0)
self.assertEqual(rv.retval, 0)
sw_if_index = rv.sw_if_index
# Set interface up and enable IP on it
rv = self.vapi.sw_interface_set_flags(sw_if_index, 1)
self.assertEqual(rv.retval, 0)
rv = self.vapi.sw_interface_set_unnumbered(
ip_sw_if_index=self.pg0.sw_if_index,
sw_if_index=sw_if_index)
self.assertEqual(rv.retval, 0)
# Add IPv4 and IPv6 routes via tunnel interface
ip4_via_tunnel = VppIpRoute(
self, "130.67.0.0", 16,
[VppRoutePath("0.0.0.0",
sw_if_index,
proto=DpoProto.DPO_PROTO_IP4)], is_ip6=0)
ip4_via_tunnel.add_vpp_config()
ip6_via_tunnel = VppIpRoute(
self, "dead::", 16,
[VppRoutePath("::",
sw_if_index,
proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1)
ip6_via_tunnel.add_vpp_config()
# IPv6 in to IPv4 tunnel
p6 = (p_ether / p_ip6 / p_payload)
p_inner_ip6 = p_ip6
p_inner_ip6.hlim -= 1
p6_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
proto='ipv6', id=0) / p_inner_ip6 / p_payload)
p6_reply.ttl -= 1
rx = self.send_and_expect(self.pg0, p6*10, self.pg1)
for p in rx:
self.validate(p[1], p6_reply)
# IPv4 in to IPv4 tunnel
p4 = (p_ether / p_ip4 / p_payload)
p_ip4_inner = p_ip4
p_ip4_inner.ttl -= 1
p4_reply = (IP(src=self.pg0.local_ip4,
dst=self.pg1.remote_ip4) / p_ip4_inner / p_payload)
p4_reply.ttl -= 1
p4_reply.id = 0
rx = self.send_and_expect(self.pg0, p4*10, self.pg1)
for p in rx:
self.validate(p[1], p4_reply)
# Decapsulation
p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
# IPv4 tunnel to IPv4
p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
p4 = (p_ether / IP(src=self.pg1.remote_ip4,
dst=self.pg0.local_ip4) / p_ip4 / p_payload)
p4_reply = (p_ip4 / p_payload)
p4_reply.ttl -= 1
rx = self.send_and_expect(self.pg1, p4*10, self.pg0)
for p in rx:
self.validate(p[1], p4_reply)
# IPv4 tunnel to IPv6
p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6)
p6 = (p_ether / IP(src=self.pg1.remote_ip4,
dst=self.pg0.local_ip4) / p_ip6 / p_payload)
p6_reply = (p_ip6 / p_payload)
p6_reply.hlim = 63
rx = self.send_and_expect(self.pg1, p6*10, self.pg0)
for p in rx:
self.validate(p[1], p6_reply)
def test_ipip6(self):
""" ip{v4,v6} over ip6 test """
p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP')
p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1")
p_payload = UDP(sport=1234, dport=1234)
# IPv6 transport
rv = self.vapi.ipip_add_tunnel(
src_address=str(ip_address(self.pg0.local_ip6).packed),
dst_address=str(ip_address(self.pg1.remote_ip6).packed))
self.assertEqual(rv.retval, 0)
sw_if_index = rv.sw_if_index
rv = self.vapi.sw_interface_set_flags(sw_if_index, 1)
self.assertEqual(rv.retval, 0)
rv = self.vapi.sw_interface_set_unnumbered(
ip_sw_if_index=self.pg0.sw_if_index, sw_if_index=sw_if_index)
self.assertEqual(rv.retval, 0)
# Add IPv4 and IPv6 routes via tunnel interface
ip4_via_tunnel = VppIpRoute(
self, "130.67.0.0", 16,
[VppRoutePath("0.0.0.0",
sw_if_index,
proto=DpoProto.DPO_PROTO_IP4)], is_ip6=0)
ip4_via_tunnel.add_vpp_config()
ip6_via_tunnel = VppIpRoute(
self, "dead::", 16,
[VppRoutePath("::",
sw_if_index,
proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1)
ip6_via_tunnel.add_vpp_config()
# Encapsulation
# IPv6 in to IPv6 tunnel
p6 = (p_ether / p_ip6 / p_payload)
p6_reply = (IPv6(src=self.pg0.local_ip6,
dst=self.pg1.remote_ip6, hlim=63) / p_ip6 / p_payload)
p6_reply[1].hlim -= 1
rx = self.send_and_expect(self.pg0, p6*10, self.pg1)
for p in rx:
self.validate(p[1], p6_reply)
# IPv4 in to IPv6 tunnel
p4 = (p_ether / p_ip4 / p_payload)
p4_reply = (IPv6(src=self.pg0.local_ip6,
dst=self.pg1.remote_ip6, hlim=63) / p_ip4 / p_payload)
p4_reply[1].ttl -= 1
rx = self.send_and_expect(self.pg0, p4*10, self.pg1)
for p in rx:
self.validate(p[1], p4_reply)
# Decapsulation
p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
# IPv6 tunnel to IPv4
p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
p4 = (p_ether / IPv6(src=self.pg1.remote_ip6,
dst=self.pg0.local_ip6) / p_ip4 / p_payload)
p4_reply = (p_ip4 / p_payload)
p4_reply.ttl -= 1
rx = self.send_and_expect(self.pg1, p4*10, self.pg0)
for p in rx:
self.validate(p[1], p4_reply)
# IPv6 tunnel to IPv6
p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6)
p6 = (p_ether / IPv6(src=self.pg1.remote_ip6,
dst=self.pg0.local_ip6) / p_ip6 / p_payload)
p6_reply = (p_ip6 / p_payload)
p6_reply.hlim = 63
rx = self.send_and_expect(self.pg1, p6*10, self.pg0)
for p in rx:
self.validate(p[1], p6_reply)
def test_ipip_create(self):
""" ipip create / delete interface test """
rv = self.vapi.ipip_add_tunnel(
src_address=str(ip_address('1.2.3.4').packed),
dst_address=str(ip_address('2.3.4.5').packed), is_ipv6=0)
self.assertEqual(rv.retval, 0)
sw_if_index = rv.sw_if_index
rv = self.vapi.ipip_del_tunnel(sw_if_index)
self.assertEqual(rv.retval, 0)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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