[nexus] add test 6.2.1 Connectivity when Parent Creates Partition (#12470)

This commit adds a new Nexus test case for 'Connectivity when Parent
Creates Partition' (6.2.1) as specified in the Thread Test
Specification.

The test verifies that a Child (End Device or Sleepy End Device)
maintains connectivity or reattaches to its parent when the current
Leader is removed and the parent Router creates a new partition.

Summary of changes:
- tests/nexus/test_6_2_1.cpp: C++ test execution script.
    - Implements support for Topology A (ED) and Topology B (SED).
    - Sets up a network with a Leader, Router_1, and the DUT.
    - Simulates Leader power-down and verifies that Router_1 becomes
      the new Leader.
    - Confirms the DUT remains attached or reattaches to Router_1.
    - Verifies bidirectional connectivity using ICMPv6 Echo Request.
- tests/nexus/verify_6_2_1.py: Python PCAP verification script.
    - Validates the network formation and DUT attachment.
    - Verifies that Router_1 creates a new partition with a new ID
      after the Leader is removed.
    - Validates the ICMPv6 Echo Request and Reply exchange between
      Router_1 and the DUT.
- tests/nexus/run_nexus_tests.sh: Updated test runner.
    - Added 6_2_1_A and 6_2_1_B to the default test list.
    - Added expansion logic to run both topologies for 6_2_1.
- tests/nexus/CMakeLists.txt: Added the new test to the build system.
This commit is contained in:
Jonathan Hui
2026-02-17 17:49:07 -06:00
committed by GitHub
parent c5177f8a43
commit 41a569bf0e
4 changed files with 348 additions and 0 deletions
+1
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@@ -161,6 +161,7 @@ ot_nexus_test(5_8_2 "cert;nexus")
ot_nexus_test(5_8_3 "cert;nexus")
ot_nexus_test(6_1_1 "cert;nexus")
ot_nexus_test(6_1_2 "cert;nexus")
ot_nexus_test(6_2_1 "cert;nexus")
# Misc tests
ot_nexus_test(border_admitter "core;nexus")
+4
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@@ -93,6 +93,8 @@ DEFAULT_TESTS=(
"6_1_1_B"
"6_1_2_A"
"6_1_2_B"
"6_2_1_A"
"6_2_1_B"
)
# Use provided arguments or the default test list
@@ -187,6 +189,8 @@ for t in "${TESTS_TO_RUN[@]}"; do
expanded_tests+=("6_1_1_A" "6_1_1_B")
elif [[ $t == "6_1_2" ]]; then
expanded_tests+=("6_1_2_A" "6_1_2_B")
elif [[ $t == "6_2_1" ]]; then
expanded_tests+=("6_2_1_A" "6_2_1_B")
else
expanded_tests+=("$t")
fi
+208
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@@ -0,0 +1,208 @@
/*
* Copyright (c) 2026, 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
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* 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.
*/
#include <stdio.h>
#include <string.h>
#include "platform/nexus_core.hpp"
#include "platform/nexus_node.hpp"
namespace ot {
namespace Nexus {
static constexpr uint32_t kFormNetworkTime = 13 * 1000;
static constexpr uint32_t kAttachTime = 200 * 1000;
static constexpr uint32_t kPartitionCreationTime = 300 * 1000;
static constexpr uint32_t kStabilizationTime = 10 * 1000;
static constexpr uint32_t kEchoTimeout = 5000;
static constexpr uint32_t kPollPeriod = 500;
static constexpr uint16_t kEchoIdentifier = 0;
static constexpr uint16_t kEchoPayloadSize = 64;
enum Topology : uint8_t
{
kTopologyA,
kTopologyB,
};
void RunTest6_2_1(Topology aTopology, const char *aJsonFile)
{
/**
* 6.2.1 Connectivity when Parent Creates Partition
*
* 6.2.1.1 Topology
* - Topology A: DUT as End Device (ED_1) attached to Router_1.
* - Topology B: DUT as Sleepy End Device (SED_1) attached to Router_1.
* - Leader: Connected to Router_1.
*
* 6.2.1.2 Purpose & Description
* The purpose of this test case is to show that the DUT upholds connectivity, or reattaches with its parent, when
* the Leader is removed and the Router creates a new partition.
*
* Spec Reference | V1.1 Section | V1.3.0 Section
* -----------------|--------------|---------------
* Children | 5.16.6 | 5.16.6
*/
Core nexus;
Node &leader = nexus.CreateNode();
Node &router1 = nexus.CreateNode();
Node &dut = nexus.CreateNode();
leader.SetName("LEADER");
router1.SetName("ROUTER_1");
if (aTopology == kTopologyA)
{
dut.SetName("ED_1");
}
else
{
dut.SetName("SED_1");
}
nexus.AdvanceTime(0);
Instance::SetLogLevel(kLogLevelNote);
/**
* Step 1: All
* - Description: Ensure topology is formed correctly.
* - Pass Criteria: N/A
*/
Log("Step 1: All");
leader.AllowList(router1);
router1.AllowList(leader);
router1.AllowList(dut);
dut.AllowList(router1);
leader.Form();
nexus.AdvanceTime(kFormNetworkTime);
VerifyOrQuit(leader.Get<Mle::Mle>().IsLeader());
router1.Join(leader);
nexus.AdvanceTime(kAttachTime);
VerifyOrQuit(router1.Get<Mle::Mle>().IsRouter());
if (aTopology == kTopologyA)
{
dut.Join(router1, Node::kAsMed);
}
else
{
dut.Join(router1, Node::kAsSed);
SuccessOrQuit(dut.Get<DataPollSender>().SetExternalPollPeriod(kPollPeriod));
}
nexus.AdvanceTime(kAttachTime);
VerifyOrQuit(dut.Get<Mle::Mle>().IsChild());
nexus.AdvanceTime(kStabilizationTime);
/**
* Step 2: Leader
* - Description: Harness silently powers-down the Leader.
* - Pass Criteria: N/A
*/
Log("Step 2: Leader");
leader.Get<Mle::Mle>().Stop();
leader.Get<ThreadNetif>().Down();
/**
* Step 3: Router_1
* - Description: Automatically creates new partition and begins transmitting MLE Advertisements.
* - Pass Criteria: N/A
*/
Log("Step 3: Router_1");
nexus.AdvanceTime(kPartitionCreationTime);
VerifyOrQuit(router1.Get<Mle::Mle>().IsLeader());
/**
* Step 4: MED_1 / SED_1 (DUT)
* - Description: Automatically remains attached or reattaches to Router_1.
* - Pass Criteria: N/A
*/
Log("Step 4: MED_1 / SED_1 (DUT)");
nexus.AdvanceTime(kStabilizationTime);
VerifyOrQuit(dut.Get<Mle::Mle>().IsAttached());
/**
* Step 5: Router_1
* - Description: To verify connectivity, Harness instructs the device to send an ICMPv6 Echo Request to the DUT
* link local address.
* - Pass Criteria:
* - The DUT MUST respond with ICMPv6 Echo Reply.
*/
Log("Step 5: Router_1");
nexus.SendAndVerifyEchoRequest(router1, dut.Get<Mle::Mle>().GetLinkLocalAddress(), kEchoIdentifier,
kEchoPayloadSize, kEchoTimeout);
nexus.SaveTestInfo(aJsonFile);
}
} /* namespace Nexus */
} /* namespace ot */
int main(int argc, char *argv[])
{
if (argc < 2)
{
ot::Nexus::RunTest6_2_1(ot::Nexus::kTopologyA, "test_6_2_1_A.json");
ot::Nexus::RunTest6_2_1(ot::Nexus::kTopologyB, "test_6_2_1_B.json");
}
else
{
ot::Nexus::Topology topology;
const char *defaultJsonFile;
if (strcmp(argv[1], "A") == 0)
{
topology = ot::Nexus::kTopologyA;
defaultJsonFile = "test_6_2_1_A.json";
}
else if (strcmp(argv[1], "B") == 0)
{
topology = ot::Nexus::kTopologyB;
defaultJsonFile = "test_6_2_1_B.json";
}
else
{
fprintf(stderr, "Error: Invalid topology '%s'. Must be 'A' or 'B'.\n", argv[1]);
return 1;
}
ot::Nexus::RunTest6_2_1(topology, (argc > 2) ? argv[2] : defaultJsonFile);
}
printf("All tests passed\n");
return 0;
}
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@@ -0,0 +1,135 @@
#!/usr/bin/env python3
#
# Copyright (c) 2026, 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
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# 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 sys
import os
# Add the current directory to sys.path to find verify_utils
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
sys.path.append(CUR_DIR)
import verify_utils
from pktverify import consts
def verify(pv):
# 6.2.1 Connectivity when Parent Creates Partition
#
# 6.2.1.1 Topology
# Topology A: DUT as End Device (ED_1) attached to Router_1.
# Topology B: DUT as Sleepy End Device (SED_1) attached to Router_1.
# Leader: Connected to Router_1.
#
# 6.2.1.2 Purpose & Description
# The purpose of this test case is to show that the DUT upholds connectivity, or reattaches with its parent, when
# the Leader is removed and the Router creates a new partition.
#
# Spec Reference | V1.1 Section | V1.3.0 Section
# -----------------|--------------|---------------
# Children | 5.16.6 | 5.16.6
pkts = pv.pkts
pv.summary.show()
LEADER = pv.vars['LEADER']
ROUTER_1 = pv.vars['ROUTER_1']
if 'ED_1' in pv.vars:
dut = pv.vars['ED_1']
elif 'SED_1' in pv.vars:
dut = pv.vars['SED_1']
else:
raise ValueError("Neither ED_1 nor SED_1 found in topology vars")
# Step 1: All
# - Description: Ensure topology is formed correctly.
# - Pass Criteria: N/A
print("Step 1: All")
# Leader Advertisement
pkts.filter_wpan_src64(LEADER).\
filter_LLANMA().\
filter_mle_cmd(consts.MLE_ADVERTISEMENT).\
must_next()
# Router 1 Advertisement (pointing to Leader)
_pkt = pkts.filter_wpan_src64(ROUTER_1).\
filter_LLANMA().\
filter_mle_cmd(consts.MLE_ADVERTISEMENT).\
must_next()
leader_partition_id = _pkt.mle.tlv.leader_data.partition_id
# DUT attached (Child ID Request)
pkts.filter_wpan_src64(dut).\
filter_wpan_dst64(ROUTER_1).\
filter_mle_cmd(consts.MLE_CHILD_ID_REQUEST).\
must_next()
# Step 2: Leader
# - Description: Harness silently powers-down the Leader.
# - Pass Criteria: N/A
print("Step 2: Leader")
# Step 3: Router_1
# - Description: Automatically creates new partition and begins transmitting MLE Advertisements.
# - Pass Criteria: N/A
print("Step 3: Router_1")
# Router 1 Advertisement with new Partition ID
pkts.filter_wpan_src64(ROUTER_1).\
filter_LLANMA().\
filter_mle_cmd(consts.MLE_ADVERTISEMENT).\
filter(lambda p: p.mle.tlv.leader_data.partition_id != leader_partition_id).\
must_next()
# Step 4: MED_1 / SED_1 (DUT)
# - Description: Automatically remains attached or reattaches to Router_1.
# - Pass Criteria: N/A
print("Step 4: MED_1 / SED_1 (DUT)")
# Step 5: Router_1
# - Description: To verify connectivity, Harness instructs the device to send an ICMPv6 Echo Request to the DUT
# link local address.
# - Pass Criteria:
# - The DUT MUST respond with ICMPv6 Echo Reply.
print("Step 5: Router_1")
_pkt = pkts.filter_ping_request().\
filter_wpan_src64(ROUTER_1).\
filter_wpan_dst64(dut).\
must_next()
pkts.filter_ping_reply(identifier=_pkt.icmpv6.echo.identifier).\
filter_wpan_src64(dut).\
filter_wpan_dst64(ROUTER_1).\
must_next()
if __name__ == '__main__':
verify_utils.run_main(verify)