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[scripts] MATN-TC-04: Removal of multicast listener by timeout expiry (#6441)
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#!/usr/bin/env python3
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#
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# Copyright (c) 2021, 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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import logging
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import unittest
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import pktverify
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from pktverify import packet_verifier, packet_filter, consts
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from pktverify.consts import MA1
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import config
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import thread_cert
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# Test description:
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# The purpose of this test case is to verify that a Primary BBR can remove an
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# entry from a Multicast Listeners Table, when the entry expires. The test case
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# also verifies that the Primary BBR accepts a new registration to the
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# previously expired multicast group.
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#
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# Topology:
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# ----------------(eth)------------------
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# | | |
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# BR1 (Leader) ----- BR2 HOST
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# | |
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# | |
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# Router_1------------+
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#
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BR_1 = 1
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BR_2 = 2
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ROUTER_1 = 3
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HOST = 4
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REG_DELAY = 10
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class MATN_04_MulticastListenerTimeout(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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TOPOLOGY = {
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BR_1: {
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'name': 'BR_1',
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'is_otbr': True,
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'allowlist': [BR_2, ROUTER_1],
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'version': '1.2',
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'router_selection_jitter': 2,
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},
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BR_2: {
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'name': 'BR_2',
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'allowlist': [BR_1, ROUTER_1],
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'is_otbr': True,
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'version': '1.2',
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'router_selection_jitter': 2,
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},
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ROUTER_1: {
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'name': 'Router_1',
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'allowlist': [BR_1, BR_2],
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'version': '1.2',
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'router_selection_jitter': 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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br1 = self.nodes[BR_1]
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br2 = self.nodes[BR_2]
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router = self.nodes[ROUTER_1]
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host = self.nodes[HOST]
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br1.set_backbone_router(reg_delay=REG_DELAY, mlr_timeout=consts.MLR_TIMEOUT_MIN)
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br1.start()
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self.simulator.go(5)
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self.assertEqual('leader', br1.get_state())
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self.assertTrue(br1.is_primary_backbone_router)
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router.start()
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self.simulator.go(5)
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self.assertEqual('router', router.get_state())
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br2.start()
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self.simulator.go(5)
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self.assertEqual('router', br2.get_state())
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self.assertFalse(br2.is_primary_backbone_router)
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host.start(start_radvd=False)
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self.simulator.go(10)
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# Router_1 registers for multicast address, MA1, at BR_1.
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router.add_ipmaddr(MA1)
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self.simulator.go(5)
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# 1. Host sends a ping packet to the multicast address, MA1.
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self.assertTrue(
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host.ping(MA1, backbone=True, ttl=10, interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
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self.simulator.go(5)
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# 3a. By internal means, Router_1 stop listening to the multicast
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# address, MA1.
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router.del_ipmaddr(MA1)
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# 4. After (MLR_TIMEOUT_MIN+2) seconds
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self.simulator.go(consts.MLR_TIMEOUT_MIN + 2)
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# 5. Host sends a ping packet to the multicast address, MA1.
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self.assertFalse(
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host.ping(MA1, backbone=True, ttl=10, interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
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self.simulator.go(5)
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# 6a. Router_1 registers for multicast address, MA1, at BR_1.
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router.add_ipmaddr(MA1)
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self.simulator.go(5)
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# 7. Host sends a ping packet to MA1.
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self.assertTrue(
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host.ping(MA1, backbone=True, ttl=10, interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
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self.collect_ipaddrs()
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self.collect_rloc16s()
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self.collect_rlocs()
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self.collect_leader_aloc(BR_1)
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self.collect_extra_vars()
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def verify(self, pv: pktverify.packet_verifier.PacketVerifier):
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pkts = pv.pkts
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vars = pv.vars
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pv.summary.show()
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# Ensure the topology is formed correctly
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pv.verify_attached('Router_1', 'BR_1')
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pv.verify_attached('BR_2')
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# 1. Host sends a ping packet to the multicast address, MA1.
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_pkt = pkts.filter_eth_src(vars['Host_ETH']) \
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.filter_ipv6_dst(MA1) \
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.filter_ping_request() \
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.must_next()
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# 2. BR_1 forwards the ping packet with multicast address, MA1, to its
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# Thread Network encapsulated in an MPL packet.
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pkts.filter_wpan_src64(vars['BR_1']) \
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.filter_AMPLFMA(vars['BR_1_RLOC']) \
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.filter_ping_request(identifier=_pkt.icmpv6.echo.identifier) \
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.must_next()
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# 3. Router_1 receives the MPL packet containing an encapsulated ping
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# packet to MA1, sent by Host, and unicasts a ping response packet back
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# to Host.
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pkts.filter_wpan_src64(vars['Router_1']) \
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.filter_ipv6_dst(_pkt.ipv6.src) \
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.filter_ping_reply(identifier=_pkt.icmpv6.echo.identifier) \
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.must_next()
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# 4. After (MLR_TIMEOUT_MIN+2) seconds, BR_1 multicasts an MLDv2 message
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# of type “Version 2 Multicast Listener Report” (see [RFC 3810] Section
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# 5.2)
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# TODO
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# 5. Host sends a ping packet to the multicast address, MA1.
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_pkt = pkts.filter_eth_src(vars['Host_ETH']) \
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.filter_ipv6_dst(MA1) \
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.filter_ping_request() \
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.must_next()
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# 6. BR_1 does not forward the ping packet with multicast address, MA1,
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# to its Thread Network.
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pkts.filter_wpan_src64(vars['BR_1']) \
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.filter_AMPLFMA(vars['BR_1_RLOC']) \
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.filter_ping_request(identifier=_pkt.icmpv6.echo.identifier) \
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.must_not_next()
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# 7. Host sends a ping packet to the multicast address, MA1.
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_pkt = pkts.filter_eth_src(vars['Host_ETH']) \
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.filter_ipv6_dst(MA1) \
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.filter_ping_request() \
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.must_next()
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# 8. BR_1 forwards the ping packet with multicast address, MA1, to its
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# Thread Network encapsulated in an MPL packet.
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pkts.filter_wpan_src64(vars['BR_1']) \
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.filter_AMPLFMA(vars['BR_1_RLOC']) \
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.filter_ping_request(identifier=_pkt.icmpv6.echo.identifier) \
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.must_next()
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# 9. Router_1 receives the MPL packet containing an encapsulated ping
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# packet to MA1, sent by Host, and unicasts a ping response packet back
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# to Host.
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pkts.filter_wpan_src64(vars['Router_1']) \
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.filter_ipv6_dst(_pkt.ipv6.src) \
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.filter_ping_reply(identifier=_pkt.icmpv6.echo.identifier) \
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.must_next()
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if __name__ == '__main__':
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unittest.main()
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@@ -59,6 +59,9 @@ DEFAULT_MESH_LOCAL_PREFIX = Bytes("fd00:0db8:0000:0000")
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LEADER_ALOC_IID = Bytes("0000:00ff:fe00:fc00")
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LEADER_ALOC = Ipv6Addr(DEFAULT_MESH_LOCAL_PREFIX + LEADER_ALOC_IID)
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# Minimum value of the MLR Timeout parameter in the BBR Dataset
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MLR_TIMEOUT_MIN = 300
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# Max response delay
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MLE_MAX_RESPONSE_DELAY = 1
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