| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2021, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| import unittest |
| import thread_cert |
| import config |
| |
| import pktverify |
| from pktverify.consts import MA1 |
| |
| # Test description: |
| # The purpose of this test case is to verify that a Border Router device is able to properly |
| # forward traffic in response to multicast destination when it comes from another BBR. |
| # |
| # Topology: |
| # ----------------(eth)------------------ |
| # | | | |
| # BR1 (Leader) ------ TD HOST |
| # |
| |
| BR_1 = 1 |
| TD = 2 |
| HOST = 3 |
| |
| |
| class ManualMulticastAddressConfig(thread_cert.TestCase): |
| USE_MESSAGE_FACTORY = False |
| |
| TOPOLOGY = { |
| BR_1: { |
| 'name': 'BR_1', |
| 'is_otbr': True, |
| 'version': '1.2', |
| }, |
| TD: { |
| 'name': 'TD', |
| 'is_otbr': True, |
| 'router_eligible': False, |
| 'version': '1.2', |
| }, |
| HOST: { |
| 'name': 'Host', |
| 'is_host': True, |
| }, |
| } |
| |
| def test(self): |
| br1 = self.nodes[BR_1] |
| td = self.nodes[TD] |
| host = self.nodes[HOST] |
| |
| br1.start() |
| self.simulator.go(config.LEADER_STARTUP_DELAY) |
| self.assertEqual('leader', br1.get_state()) |
| self.assertTrue(br1.is_primary_backbone_router) |
| |
| td.start() |
| self.simulator.go(5) |
| self.assertEqual('child', td.get_state()) |
| |
| # TD registers for multicast address, MA1, at BR_1. |
| td.add_ipmaddr_tun(MA1) |
| self.simulator.go(5) |
| |
| # Host sends a ping packet to the multicast address, MA1. TD should |
| # respond to the ping request. |
| host.ping(MA1, backbone=True, ttl=10, interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]) |
| self.simulator.go(5) |
| |
| def verify(self, pv: pktverify.packet_verifier.PacketVerifier): |
| pkts = pv.pkts |
| vars = pv.vars |
| pv.summary.show() |
| |
| # 1. Host sends a ping packet to the multicast address, MA1. |
| _pkt = pkts.filter_eth_src(vars['Host_ETH']) \ |
| .filter_ipv6_dst(MA1) \ |
| .filter_ping_request() \ |
| .must_next() |
| |
| # 1. TD receives the multicast ping packet and sends a ping response |
| # packet back to Host. |
| # TD receives the MPL packet containing an encapsulated ping packet to |
| # MA1, sent by Host, and unicasts a ping response packet back to Host. |
| pkts.filter_ipv6_dst(_pkt.ipv6.src) \ |
| .filter_ping_reply(identifier=_pkt.icmpv6.echo.identifier) \ |
| .must_next() |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |