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[nexus] migrate router multicast link request test to nexus (#12966)
This commit migrates the router multicast link request test from the thread-cert functional tests to the Nexus simulation framework. The new Nexus test 'test_router_multicast_link_request.cpp' covers: - Verification of a REED node becoming a router. - Multicast Link Request transmission to neighboring routers. - Quick link establishment with multiple neighbors after role upgrade. The original Python test 'test_router_multicast_link_request.py' is removed as its functionality is now fully covered by the Nexus test.
This commit is contained in:
Jonathan Hui
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#!/usr/bin/env python3
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#
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# Copyright (c) 2022, 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 config
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import thread_cert
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from pktverify.consts import MLE_LINK_REQUEST
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from pktverify.packet_verifier import PacketVerifier
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LEADER = 1
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REED = 2
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ROUTER1, ROUTER2, ROUTER3 = 3, 4, 5
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# Test Purpose and Description:
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# -----------------------------
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# This test verifies if a device can quickly and efficiently establish links with
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# neighboring routers by sending a multicast Link Request message after becoming
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# a router
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#
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# Test Topology:
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# -------------
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# Leader------+
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# | \ \
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# Router1 Router2 Router3
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# \ | |
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# +---REED-----+
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#
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# REED should establish links to the three Routers within the delay threshold.
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# The max delay consists:
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# Leader may delay 1 second for MLE Advertisement
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# Router may delay 1 second for MLE Advertisement
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# Router may delay 1 second for MLE Link Accept after receiving MLE Link Request (multicast)
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LINK_ESTABLISH_DELAY_THRESHOLD = 3
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class TestRouterMulticastLinkRequest(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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TOPOLOGY = {
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LEADER: {
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'name': 'LEADER',
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'mode': 'rdn',
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'allowlist': [ROUTER1, ROUTER2, ROUTER3]
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},
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ROUTER1: {
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'name': 'ROUTER1',
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'mode': 'rdn',
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'allowlist': [LEADER, REED]
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},
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ROUTER2: {
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'name': 'ROUTER2',
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'mode': 'rdn',
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'allowlist': [LEADER, REED]
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},
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ROUTER3: {
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'name': 'ROUTER3',
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'mode': 'rdn',
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'allowlist': [LEADER, REED]
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},
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REED: {
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'name': 'REED',
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'mode': 'rdn',
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'allowlist': [ROUTER1, ROUTER2, ROUTER3]
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},
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}
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def test(self):
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self.nodes[LEADER].start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
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for routerid in (ROUTER1, ROUTER2, ROUTER3):
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self.nodes[routerid].start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(self.nodes[routerid].get_state(), 'router')
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# Wait for the network to stabilize
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self.simulator.go(60)
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self.nodes[REED].start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(self.nodes[REED].get_state(), 'router')
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self.simulator.go(LINK_ESTABLISH_DELAY_THRESHOLD + 3)
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# Verify that REED has established link with all routers
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reed_table = self.nodes[REED].router_table()
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reed_id = self.nodes[REED].get_router_id()
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for router in [self.nodes[ROUTER1], self.nodes[ROUTER2], self.nodes[ROUTER3]]:
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self.assertEqual(reed_table[router.get_router_id()]['link'], 1)
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self.assertEqual(router.router_table()[reed_id]['link'], 1)
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if __name__ == '__main__':
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unittest.main()
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