223 lines
8.8 KiB
Python
223 lines
8.8 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2020, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# This test verifies PBBR's ND Proxy feature:
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# 1. Sends ICMPv6 Neighbor Advertisement (NA) for ND Proxy
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# 2. Receive and handle ICMPv6 Neighbor Solicitation (NS) and sends NA accordingly.
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#
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import ipaddress
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import unittest
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import config
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import thread_cert
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from pktverify.packet_verifier import PacketVerifier
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from pktverify.consts import DUA_RECENT_TIME
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PBBR = 1
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SBBR = 2
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ROUTER1 = 3
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HOST = 4
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REREG_DELAY = 5 # Seconds
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MLR_TIMEOUT = 300 # Seconds
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WAIT_REDUNDANCE = 3
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class TestNdProxy(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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# Topology:
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# ---- -(eth)------------
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# | | |
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# PBBR----SBBR HOST
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# \ /
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# Router1
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#
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TOPOLOGY = {
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PBBR: {
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'name': 'PBBR',
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'allowlist': [SBBR, ROUTER1],
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'is_otbr': True,
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'version': '1.2',
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},
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SBBR: {
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'name': 'SBBR',
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'allowlist': [PBBR, ROUTER1],
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'is_otbr': True,
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'version': '1.2',
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},
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ROUTER1: {
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'name': 'ROUTER1',
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'allowlist': [PBBR, SBBR],
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'version': '1.2',
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},
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HOST: {
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'name': 'HOST',
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'is_host': True
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},
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}
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def test(self):
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# Bring up HOST
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self.nodes[HOST].start()
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# Bring up PBBR
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self.nodes[PBBR].start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual('leader', self.nodes[PBBR].get_state())
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self.wait_node_state(PBBR, 'leader', 10)
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self.nodes[PBBR].set_backbone_router(reg_delay=REREG_DELAY, mlr_timeout=MLR_TIMEOUT)
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self.nodes[PBBR].enable_backbone_router()
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self.nodes[PBBR].set_domain_prefix(config.DOMAIN_PREFIX, 'prosD')
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self.simulator.go(5)
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self.assertTrue(self.nodes[PBBR].is_primary_backbone_router)
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self.assertIsNotNone(self.nodes[PBBR].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up SBBR
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self.nodes[SBBR].start()
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self.simulator.go(5)
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self.assertEqual('router', self.nodes[SBBR].get_state())
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self.nodes[SBBR].set_backbone_router(reg_delay=REREG_DELAY, mlr_timeout=MLR_TIMEOUT)
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self.nodes[SBBR].enable_backbone_router()
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self.simulator.go(5)
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self.assertFalse(self.nodes[SBBR].is_primary_backbone_router)
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self.assertIsNotNone(self.nodes[SBBR].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up ROUTER1
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self.nodes[ROUTER1].start()
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self.simulator.go(5)
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self.assertEqual('router', self.nodes[ROUTER1].get_state())
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self.assertIsNotNone(self.nodes[ROUTER1].get_ip6_address(config.ADDRESS_TYPE.DUA))
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self.collect_ipaddrs()
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self.collect_rloc16s()
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# Wait for DUA_RECENT_TIME
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self.simulator.go(DUA_RECENT_TIME + WAIT_REDUNDANCE)
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self._test_neighbor_solicitation(PBBR)
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self._test_neighbor_solicitation(SBBR)
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self._test_neighbor_solicitation(ROUTER1)
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def _test_neighbor_solicitation(self, nodeid):
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dua = self.nodes[nodeid].get_ip6_address(config.ADDRESS_TYPE.DUA)
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print('Node DUA: ', dua)
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self.nodes[HOST].ip_neighbors_flush()
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self.nodes[HOST].ping(dua, backbone=True)
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self.simulator.go(WAIT_REDUNDANCE)
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def verify(self, pv: PacketVerifier):
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pkts = pv.pkts
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pv.add_common_vars()
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pv.summary.show()
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PBBR_DUA = pv.vars['PBBR_DUA']
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SBBR_DUA = pv.vars['SBBR_DUA']
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ROUTER1_DUA = pv.vars['ROUTER1_DUA']
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PBBR_ETH = pv.vars['PBBR_ETH']
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SBBR_ETH = pv.vars['SBBR_ETH']
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HOST_ETH = pv.vars['HOST_ETH']
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HOST_BGUA = pv.vars['HOST_BGUA']
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# SBBR must not send NA for any DUA
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pkts.filter_eth_src(SBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(PBBR_DUA).must_not_next()
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pkts.filter_eth_src(SBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(SBBR_DUA).must_not_next()
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pkts.filter_eth_src(SBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(ROUTER1_DUA).must_not_next()
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# PBBR must send unsolicited NA for PBBR's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(PBBR_DUA).filter(
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'icmpv6.nd.na.flag.s == 0').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 1
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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# PBBR must send unsolicited NA for SBBR's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(SBBR_DUA).filter(
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'icmpv6.nd.na.flag.s == 0').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 1
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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# PBBR must send unsolicited NA for ROUTER1's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_LLANMA().filter_icmpv6_nd_na(ROUTER1_DUA).filter(
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'icmpv6.nd.na.flag.s == 0').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 1
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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# HOST should send NS for PBBR's DUA
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pkts.filter_eth_src(HOST_ETH).filter_icmpv6_nd_ns(PBBR_DUA).must_next()
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# PBBR must send solicited NA for PBBR's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_ipv6_dst(HOST_BGUA).filter_icmpv6_nd_na(PBBR_DUA).filter(
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'icmpv6.nd.na.flag.s == 1').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 0
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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# Host should send NS for SBBR's DUA
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pkts.filter_eth_src(HOST_ETH).filter_icmpv6_nd_ns(SBBR_DUA).must_next()
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# PBBR must send solicited NA for SBBR's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_ipv6_dst(HOST_BGUA).filter_icmpv6_nd_na(SBBR_DUA).filter(
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'icmpv6.nd.na.flag.s == 1').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 0
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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# Host should send NS for ROUTER1's DUA
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pkts.filter_eth_src(HOST_ETH).filter_icmpv6_nd_ns(ROUTER1_DUA).must_next()
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# PBBR must send solicited NA for ROUTER1's DUA
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pkts.filter_eth_src(PBBR_ETH).filter_ipv6_dst(HOST_BGUA).filter_icmpv6_nd_na(ROUTER1_DUA).filter(
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'icmpv6.nd.na.flag.s == 1').must_next().must_verify("""
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icmpv6.opt.linkaddr == {PBBR_ETH}
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and icmpv6.nd.na.flag.r == 1
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and icmpv6.nd.na.flag.o == 0
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and icmpv6.nd.na.flag.rsv == 0
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""",
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PBBR_ETH=PBBR_ETH)
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if __name__ == '__main__':
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unittest.main()
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