7f99183a20
Add 2/3 support to binarytomac and mactobinary and move to vpp_mac.py Change-Id: I3dc7e4a24486aee22140c781aae7e44e58935877 Signed-off-by: Ole Troan <ot@cisco.com>
510 lines
18 KiB
Python
510 lines
18 KiB
Python
#!/usr/bin/env python
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"""IP{4,6} over IP{v,6} tunnel functional tests"""
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import unittest
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from scapy.layers.inet6 import IPv6, Ether, IP, UDP, IPv6ExtHdrFragment
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from scapy.all import fragment, fragment6, RandShort, defragment6
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from framework import VppTestCase, VppTestRunner
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from vpp_ip import DpoProto
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from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
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from socket import AF_INET, AF_INET6, inet_pton
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from util import reassemble4
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""" Testipip is a subclass of VPPTestCase classes.
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IPIP tests.
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"""
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class TestIPIP(VppTestCase):
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""" IPIP Test Case """
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@classmethod
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def setUpClass(cls):
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super(TestIPIP, cls).setUpClass()
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cls.create_pg_interfaces(range(2))
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cls.interfaces = list(cls.pg_interfaces)
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def setUp(self):
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super(TestIPIP, self).setUp()
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for i in self.interfaces:
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i.admin_up()
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i.config_ip4()
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i.config_ip6()
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i.disable_ipv6_ra()
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i.resolve_arp()
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i.resolve_ndp()
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def tearDown(self):
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super(TestIPIP, self).tearDown()
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if not self.vpp_dead:
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for i in self.pg_interfaces:
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i.unconfig_ip4()
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i.unconfig_ip6()
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i.admin_down()
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def validate(self, rx, expected):
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self.assertEqual(rx, expected.__class__(expected))
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def generate_ip4_frags(self, payload_length, fragment_size):
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length)
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p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
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outer_ip4 = (p_ether / IP(src=self.pg1.remote_ip4,
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id=RandShort(),
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dst=self.pg0.local_ip4) / p_ip4 / p_payload)
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frags = fragment(outer_ip4, fragment_size)
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p4_reply = (p_ip4 / p_payload)
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p4_reply.ttl -= 1
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return frags, p4_reply
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def test_ipip4(self):
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""" ip{v4,v6} over ip4 test """
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p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=42)
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p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42)
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p_payload = UDP(sport=1234, dport=1234)
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# IPv4 transport
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rv = self.vapi.ipip_add_tunnel(
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src_address=self.pg0.local_ip4n,
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dst_address=self.pg1.remote_ip4n,
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is_ipv6=0, tc_tos=0xFF)
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sw_if_index = rv.sw_if_index
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# Set interface up and enable IP on it
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self.vapi.sw_interface_set_flags(sw_if_index, 1)
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self.vapi.sw_interface_set_unnumbered(
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ip_sw_if_index=self.pg0.sw_if_index,
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sw_if_index=sw_if_index)
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# Add IPv4 and IPv6 routes via tunnel interface
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ip4_via_tunnel = VppIpRoute(
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self, "130.67.0.0", 16,
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[VppRoutePath("0.0.0.0",
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sw_if_index,
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proto=DpoProto.DPO_PROTO_IP4)], is_ip6=0)
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ip4_via_tunnel.add_vpp_config()
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ip6_via_tunnel = VppIpRoute(
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self, "dead::", 16,
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[VppRoutePath("::",
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sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1)
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ip6_via_tunnel.add_vpp_config()
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# IPv6 in to IPv4 tunnel
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p6 = (p_ether / p_ip6 / p_payload)
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p_inner_ip6 = p_ip6
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p_inner_ip6.hlim -= 1
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p6_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
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proto='ipv6', id=0, tos=42) / p_inner_ip6 / p_payload)
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p6_reply.ttl -= 1
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rx = self.send_and_expect(self.pg0, p6*10, self.pg1)
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for p in rx:
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self.validate(p[1], p6_reply)
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# IPv4 in to IPv4 tunnel
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p4 = (p_ether / p_ip4 / p_payload)
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p_ip4_inner = p_ip4
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p_ip4_inner.ttl -= 1
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p4_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
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tos=42) /
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p_ip4_inner / p_payload)
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p4_reply.ttl -= 1
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p4_reply.id = 0
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rx = self.send_and_expect(self.pg0, p4*10, self.pg1)
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for p in rx:
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self.validate(p[1], p4_reply)
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# Decapsulation
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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# IPv4 tunnel to IPv4
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p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
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p4 = (p_ether / IP(src=self.pg1.remote_ip4,
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dst=self.pg0.local_ip4) / p_ip4 / p_payload)
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p4_reply = (p_ip4 / p_payload)
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p4_reply.ttl -= 1
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rx = self.send_and_expect(self.pg1, p4*10, self.pg0)
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for p in rx:
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self.validate(p[1], p4_reply)
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err = self.statistics.get_counter(
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'/err/ipip4-input/packets decapsulated')
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self.assertEqual(err, 10)
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# IPv4 tunnel to IPv6
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p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6)
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p6 = (p_ether / IP(src=self.pg1.remote_ip4,
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dst=self.pg0.local_ip4) / p_ip6 / p_payload)
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p6_reply = (p_ip6 / p_payload)
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p6_reply.hlim = 63
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rx = self.send_and_expect(self.pg1, p6*10, self.pg0)
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for p in rx:
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self.validate(p[1], p6_reply)
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err = self.statistics.get_counter(
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'/err/ipip4-input/packets decapsulated')
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self.assertEqual(err, 20)
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#
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# Fragmentation / Reassembly and Re-fragmentation
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#
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rv = self.vapi.ip_reassembly_enable_disable(
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sw_if_index=self.pg1.sw_if_index,
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enable_ip4=1)
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# Send lots of fragments, verify reassembled packet
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frags, p4_reply = self.generate_ip4_frags(3131, 1400)
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f = []
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for i in range(0, 1000):
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f.extend(frags)
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self.pg1.add_stream(f)
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self.pg_enable_capture()
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self.pg_start()
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rx = self.pg0.get_capture(1000)
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for p in rx:
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self.validate(p[1], p4_reply)
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err = self.statistics.get_counter(
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'/err/ipip4-input/packets decapsulated')
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self.assertEqual(err, 1020)
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f = []
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r = []
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for i in range(1, 90):
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frags, p4_reply = self.generate_ip4_frags(i * 100, 1000)
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f.extend(frags)
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r.extend(p4_reply)
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self.pg_enable_capture()
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self.pg1.add_stream(f)
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self.pg_start()
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rx = self.pg0.get_capture(89)
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i = 0
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for p in rx:
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self.validate(p[1], r[i])
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i += 1
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# Now try with re-fragmentation
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#
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# Send fragments to tunnel head-end, for the tunnel head end
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# to reassemble and then refragment
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#
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self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [576, 0, 0, 0])
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frags, p4_reply = self.generate_ip4_frags(3123, 1200)
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self.pg_enable_capture()
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self.pg1.add_stream(frags)
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self.pg_start()
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rx = self.pg0.get_capture(6)
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reass_pkt = reassemble4(rx)
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p4_reply.ttl -= 1
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p4_reply.id = 256
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self.validate(reass_pkt, p4_reply)
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self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1600, 0, 0, 0])
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frags, p4_reply = self.generate_ip4_frags(3123, 1200)
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self.pg_enable_capture()
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self.pg1.add_stream(frags)
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self.pg_start()
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rx = self.pg0.get_capture(2)
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reass_pkt = reassemble4(rx)
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p4_reply.ttl -= 1
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p4_reply.id = 512
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self.validate(reass_pkt, p4_reply)
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def test_ipip_create(self):
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""" ipip create / delete interface test """
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rv = self.vapi.ipip_add_tunnel(
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src_address=inet_pton(AF_INET, '1.2.3.4'),
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dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0)
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sw_if_index = rv.sw_if_index
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self.vapi.ipip_del_tunnel(sw_if_index)
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def test_ipip_vrf_create(self):
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""" ipip create / delete interface VRF test """
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t = VppIpTable(self, 20)
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t.add_vpp_config()
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rv = self.vapi.ipip_add_tunnel(
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src_address=inet_pton(AF_INET, '1.2.3.4'),
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dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0,
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table_id=20)
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sw_if_index = rv.sw_if_index
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self.vapi.ipip_del_tunnel(sw_if_index)
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def payload(self, len):
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return 'x' * len
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class TestIPIP6(VppTestCase):
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""" IPIP6 Test Case """
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@classmethod
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def setUpClass(cls):
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super(TestIPIP6, cls).setUpClass()
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cls.create_pg_interfaces(range(2))
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cls.interfaces = list(cls.pg_interfaces)
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def setUp(self):
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for i in self.interfaces:
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i.admin_up()
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i.config_ip4()
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i.config_ip6()
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i.disable_ipv6_ra()
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i.resolve_arp()
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i.resolve_ndp()
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self.setup_tunnel()
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def tearDown(self):
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if not self.vpp_dead:
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self.destroy_tunnel()
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for i in self.pg_interfaces:
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i.unconfig_ip4()
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i.unconfig_ip6()
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i.admin_down()
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super(TestIPIP6, self).tearDown()
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def setup_tunnel(self):
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# IPv6 transport
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rv = self.vapi.ipip_add_tunnel(
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src_address=self.pg0.local_ip6n,
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dst_address=self.pg1.remote_ip6n, tc_tos=255)
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sw_if_index = rv.sw_if_index
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self.tunnel_if_index = sw_if_index
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self.vapi.sw_interface_set_flags(sw_if_index, 1)
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self.vapi.sw_interface_set_unnumbered(
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ip_sw_if_index=self.pg0.sw_if_index, sw_if_index=sw_if_index)
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# Add IPv4 and IPv6 routes via tunnel interface
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ip4_via_tunnel = VppIpRoute(
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self, "130.67.0.0", 16,
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[VppRoutePath("0.0.0.0",
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sw_if_index,
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proto=DpoProto.DPO_PROTO_IP4)], is_ip6=0)
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ip4_via_tunnel.add_vpp_config()
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ip6_via_tunnel = VppIpRoute(
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self, "dead::", 16,
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[VppRoutePath("::",
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sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1)
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ip6_via_tunnel.add_vpp_config()
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self.tunnel_ip6_via_tunnel = ip6_via_tunnel
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self.tunnel_ip4_via_tunnel = ip4_via_tunnel
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def destroy_tunnel(self):
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# IPv6 transport
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self.tunnel_ip4_via_tunnel.remove_vpp_config()
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self.tunnel_ip6_via_tunnel.remove_vpp_config()
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rv = self.vapi.ipip_del_tunnel(sw_if_index=self.tunnel_if_index)
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def validate(self, rx, expected):
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self.assertEqual(rx, expected.__class__(expected))
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def generate_ip6_frags(self, payload_length, fragment_size):
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length)
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p_ip6 = IPv6(src="1::1", dst=self.pg0.remote_ip6)
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outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6,
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dst=self.pg0.local_ip6) /
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IPv6ExtHdrFragment() / p_ip6 / p_payload)
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frags = fragment6(outer_ip6, fragment_size)
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p6_reply = (p_ip6 / p_payload)
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p6_reply.hlim -= 1
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return frags, p6_reply
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def generate_ip6_hairpin_frags(self, payload_length, fragment_size):
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length)
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p_ip6 = IPv6(src="1::1", dst="dead::1")
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outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6,
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dst=self.pg0.local_ip6) /
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IPv6ExtHdrFragment() / p_ip6 / p_payload)
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frags = fragment6(outer_ip6, fragment_size)
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p_ip6.hlim -= 1
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p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6,
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hlim=63) / p_ip6 / p_payload)
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return frags, p6_reply
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def test_encap(self):
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""" ip{v4,v6} over ip6 test encap """
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p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
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p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP')
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p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42)
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p_payload = UDP(sport=1234, dport=1234)
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# Encapsulation
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# IPv6 in to IPv6 tunnel
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p6 = (p_ether / p_ip6 / p_payload)
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p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6,
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hlim=64, tc=42) /
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p_ip6 / p_payload)
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p6_reply[1].hlim -= 1
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rx = self.send_and_expect(self.pg0, p6*11, self.pg1)
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for p in rx:
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self.validate(p[1], p6_reply)
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# IPv4 in to IPv6 tunnel
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p4 = (p_ether / p_ip4 / p_payload)
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p4_reply = (IPv6(src=self.pg0.local_ip6,
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dst=self.pg1.remote_ip6, hlim=64, tc=42) /
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p_ip4 / p_payload)
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p4_reply[1].ttl -= 1
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rx = self.send_and_expect(self.pg0, p4*11, self.pg1)
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for p in rx:
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self.validate(p[1], p4_reply)
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def test_decap(self):
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""" ip{v4,v6} over ip6 test decap """
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP')
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p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
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p_payload = UDP(sport=1234, dport=1234)
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# Decapsulation
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# IPv6 tunnel to IPv4
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p4 = (p_ether / IPv6(src=self.pg1.remote_ip6,
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dst=self.pg0.local_ip6) / p_ip4 / p_payload)
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p4_reply = (p_ip4 / p_payload)
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p4_reply.ttl -= 1
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rx = self.send_and_expect(self.pg1, p4*11, self.pg0)
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for p in rx:
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self.validate(p[1], p4_reply)
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# IPv6 tunnel to IPv6
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p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6)
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p6 = (p_ether / IPv6(src=self.pg1.remote_ip6,
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dst=self.pg0.local_ip6) / p_ip6 / p_payload)
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p6_reply = (p_ip6 / p_payload)
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p6_reply.hlim = 63
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rx = self.send_and_expect(self.pg1, p6*11, self.pg0)
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for p in rx:
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self.validate(p[1], p6_reply)
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def test_frag(self):
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""" ip{v4,v6} over ip6 test frag """
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p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
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p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP')
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p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4)
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p_payload = UDP(sport=1234, dport=1234)
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#
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# Fragmentation / Reassembly and Re-fragmentation
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#
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rv = self.vapi.ip_reassembly_enable_disable(
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sw_if_index=self.pg1.sw_if_index,
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enable_ip6=1)
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# Send lots of fragments, verify reassembled packet
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before_cnt = self.statistics.get_counter(
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'/err/ipip6-input/packets decapsulated')
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frags, p6_reply = self.generate_ip6_frags(3131, 1400)
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f = []
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for i in range(0, 1000):
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f.extend(frags)
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self.pg1.add_stream(f)
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self.pg_enable_capture()
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self.pg_start()
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rx = self.pg0.get_capture(1000)
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for p in rx:
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self.validate(p[1], p6_reply)
|
|
|
|
cnt = self.statistics.get_counter(
|
|
'/err/ipip6-input/packets decapsulated')
|
|
self.assertEqual(cnt, before_cnt + 1000)
|
|
|
|
f = []
|
|
r = []
|
|
# TODO: Check out why reassembly of atomic fragments don't work
|
|
for i in range(10, 90):
|
|
frags, p6_reply = self.generate_ip6_frags(i * 100, 1000)
|
|
f.extend(frags)
|
|
r.extend(p6_reply)
|
|
self.pg_enable_capture()
|
|
self.pg1.add_stream(f)
|
|
self.pg_start()
|
|
rx = self.pg0.get_capture(80)
|
|
i = 0
|
|
for p in rx:
|
|
self.validate(p[1], r[i])
|
|
i += 1
|
|
|
|
# Simple fragmentation
|
|
p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
|
|
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0])
|
|
|
|
# IPv6 in to IPv6 tunnel
|
|
p_payload = UDP(sport=1234, dport=1234) / self.payload(1300)
|
|
|
|
p6 = (p_ether / p_ip6 / p_payload)
|
|
p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6,
|
|
hlim=63, tc=42) /
|
|
p_ip6 / p_payload)
|
|
p6_reply[1].hlim -= 1
|
|
self.pg_enable_capture()
|
|
self.pg0.add_stream(p6)
|
|
self.pg_start()
|
|
rx = self.pg1.get_capture(2)
|
|
|
|
# Scapy defragment doesn't deal well with multiple layers
|
|
# of samy type / Ethernet header first
|
|
f = [p[1] for p in rx]
|
|
reass_pkt = defragment6(f)
|
|
self.validate(reass_pkt, p6_reply)
|
|
|
|
# Now try with re-fragmentation
|
|
#
|
|
# Send large fragments to tunnel head-end, for the tunnel head end
|
|
# to reassemble and then refragment out the tunnel again.
|
|
# Hair-pinning
|
|
#
|
|
self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0])
|
|
frags, p6_reply = self.generate_ip6_hairpin_frags(8000, 1200)
|
|
self.pg_enable_capture()
|
|
self.pg1.add_stream(frags)
|
|
self.pg_start()
|
|
rx = self.pg1.get_capture(7)
|
|
f = [p[1] for p in rx]
|
|
reass_pkt = defragment6(f)
|
|
p6_reply.id = 256
|
|
self.validate(reass_pkt, p6_reply)
|
|
|
|
def test_ipip_create(self):
|
|
""" ipip create / delete interface test """
|
|
rv = self.vapi.ipip_add_tunnel(
|
|
src_address=inet_pton(AF_INET, '1.2.3.4'),
|
|
dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0)
|
|
sw_if_index = rv.sw_if_index
|
|
self.vapi.ipip_del_tunnel(sw_if_index)
|
|
|
|
def test_ipip_vrf_create(self):
|
|
""" ipip create / delete interface VRF test """
|
|
|
|
t = VppIpTable(self, 20)
|
|
t.add_vpp_config()
|
|
rv = self.vapi.ipip_add_tunnel(
|
|
src_address=inet_pton(AF_INET, '1.2.3.4'),
|
|
dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0,
|
|
table_id=20)
|
|
sw_if_index = rv.sw_if_index
|
|
self.vapi.ipip_del_tunnel(sw_if_index)
|
|
|
|
def payload(self, len):
|
|
return 'x' * len
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|