IPIP: Add IP{v4,v6} over IP{v4,v6} configured tunnel support.
Change-Id: I166301c9e2388bae5f70ec0179d663a2703e27f5
Signed-off-by: Ole Troan <ot@cisco.com>
diff --git a/test/test_ipip.py b/test/test_ipip.py
new file mode 100644
index 0000000..1ae4de0
--- /dev/null
+++ b/test/test_ipip.py
@@ -0,0 +1,248 @@
+#
+# 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)