Files
openthread/tests/nexus/verify_1_1_9_2_17.py
Jonathan Hui 709217aa8a [nexus] support channel-based pcap filtering in verification (#12586)
This commit enables channel-based filtering in Nexus simulation tests
by exporting node channel information and enhancing the pktverify
library to extract and use it.

Simulation Core:
- Export each node's PAN channel to the test JSON metadata in
  nexus_core.cpp.

Pktverify Library:
- Update packet.py to extract channel information from 'wpan-tap' or
  'wpan_tap' layers and normalize it into 'wpan.channel'.
- Update consts.py and layer_fields.py to support the new TAP layers
  and their channel fields.
- Enhance NullField to be callable and iterable, and update Bytes
  comparison to handle NullField, preventing script crashes when
  accessing missing layers or fields.

Verification Utilities:
- Automatically load channel information from test JSON into
  verification variables (e.g., {NODE_NAME}_CHANNEL).

Test Updates:
- Stabilize 1.1.9.2.14 by using channel-based filtering instead of
  relying solely on RLOC16s.
- Update 1.1.9.2.17 and 1.1.9.2.8 to use the normalized
  'wpan.channel' field instead of direct 'wpan_tap' access.
2026-02-28 21:15:00 -06:00

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#!/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):
# 9.2.17 Orphaned End Devices
#
# 9.2.17.1 Topology
# - Leader_1
# - Leader_2
# - ED_1 (DUT)
#
# 9.2.17.2 Purpose & Description
# The purpose of this test case to validate end device functionality when its Parent is no longer available and
# searches for a new Parent using MLE Announce messages.
#
# Spec Reference | V1.1 Section | V1.3.0 Section
# ---------------------|--------------|---------------
# Orphaned End Devices | 8.7.7 | 8.7.7
pkts = pv.pkts
pv.summary.show()
LEADER_1 = pv.vars['LEADER_1']
LEADER_2 = pv.vars['LEADER_2']
DUT = pv.vars['DUT']
PRIMARY_CHANNEL = 11
SECONDARY_CHANNEL = 12
LEADER_2_PAN_ID = 0x2222
BROADCAST_PAN_ID = 0xffff
# Step 1: All
# - Description: Form the two topologies and ensure the DUT is attached to Leader_1
# - Pass Criteria: Ensure topology is formed correctly. Verify that Leader_1 & Leader_2 are sending MLE
# Advertisements on separate channels.
print("Step 1: Verify that Leader_1 & Leader_2 are sending MLE Advertisements on separate channels.")
pkts.filter_wpan_src64(LEADER_1).\
filter_LLANMA().\
filter_mle_cmd(consts.MLE_ADVERTISEMENT).\
filter(lambda p: p.wpan.channel == PRIMARY_CHANNEL).\
must_next()
pkts.filter_wpan_src64(LEADER_2).\
filter_LLANMA().\
filter_mle_cmd(consts.MLE_ADVERTISEMENT).\
filter(lambda p: p.wpan.channel == SECONDARY_CHANNEL).\
must_next()
# Step 2: Leader_1
# - Description: Harness silently powers-down Leader_1 and enables connectivity between the DUT and Leader_2
# - Pass Criteria: N/A
print("Step 2: Harness silently powers-down Leader_1 and enables connectivity between the DUT and Leader_2")
# Step 3: DUT
# - Description: Automatically recognizes that its Parent is gone when it doesn’t receive responses to MLE Child
# Update Requests
# - Pass Criteria: N/A
print("Step 3: DUT automatically recognizes that its Parent is gone")
# Step 4: DUT
# - Description: Automatically attempts to reattach to its current Thread Partition using the standard attaching
# process
# - Pass Criteria: The DUT MUST send a MLE Parent Request
print("Step 4: The DUT MUST send a MLE Parent Request")
pkts.filter_wpan_src64(DUT).\
filter_mle_cmd(consts.MLE_PARENT_REQUEST).\
filter(lambda p: p.wpan.channel == PRIMARY_CHANNEL).\
must_next()
# Step 5: DUT
# - Description: The DUT does not receive a MLE Parent Response to its request
# - Pass Criteria: N/A
print("Step 5: The DUT does not receive a MLE Parent Response to its request")
# Step 6: DUT
# - Description: After failing to receive a MLE Parent Response to its request, the DUT automatically sends a MLE
# Announce Message on the Secondary channel and waits on the Primary channel to hear any announcements.
# - Pass Criteria: The DUT MUST send a MLE Announce Message, including the following TLVs:
# - Channel TLV: ‘Primary’
# - Active Timestamp TLV
# - PAN ID TLV
# - The Destination PAN ID in the IEEE 802.15.4 MAC header MUST be set to the Broadcast PAN ID (0xFFFF) and MUST
# be secured using Key ID Mode 2.
print("Step 6: The DUT MUST send a MLE Announce Message")
pkts.filter_wpan_src64(DUT).\
filter_mle_cmd(consts.MLE_ANNOUNCE).\
filter(lambda p: p.wpan.channel == SECONDARY_CHANNEL).\
filter(lambda p: {
consts.CHANNEL_TLV,
consts.ACTIVE_TIMESTAMP_TLV,
consts.PAN_ID_TLV
} <= set(p.mle.tlv.type)).\
filter(lambda p: p.mle.tlv.channel == PRIMARY_CHANNEL).\
filter(lambda p: p.wpan.dst_pan == BROADCAST_PAN_ID).\
filter(lambda p: p.wpan.aux_sec.key_id_mode == 0x2).\
must_next()
# Step 7: Leader_2
# - Description: Receives the MLE Announce from the DUT and automatically sends a MLE Announce on the Primary
# channel because Leader_2 has a new Active Timestamp
# - Pass Criteria: N/A
print("Step 7: Leader_2 sends a MLE Announce on the Primary channel")
pkts.filter_wpan_src64(LEADER_2).\
filter_mle_cmd(consts.MLE_ANNOUNCE).\
filter(lambda p: p.wpan.channel == PRIMARY_CHANNEL).\
must_next()
# Step 8: DUT
# - Description: Receives the MLE Announce from Leader_2 and automatically attempts to attach on the Secondary
# channel
# - Pass Criteria: The DUT MUST attempt to attach on the Secondary channel, with the new PAN ID it received in the
# MLE Announce message from Leader_2. The DUT MUST send a Parent Request on the Secondary channel
print("Step 8: The DUT MUST send a Parent Request on the Secondary channel")
pkts.filter_wpan_src64(DUT).\
filter_mle_cmd(consts.MLE_PARENT_REQUEST).\
filter(lambda p: p.wpan.channel == SECONDARY_CHANNEL).\
filter(lambda p: p.wpan.dst_pan == LEADER_2_PAN_ID).\
must_next()
# Step 9: Leader_2
# - Description: Harness verifies connectivity by instructing Leader_2 to send an ICMP Echo Request to the DUT
# - Pass Criteria: The DUT MUST respond with an ICMPv6 Echo Reply
print("Step 9: ICMPv6 Echo Request/Reply")
_pkt = pkts.filter_ping_request().\
filter_ipv6_src(pv.vars['LEADER_2_MLEID']).\
filter_ipv6_dst(pv.vars['DUT_MLEID']).\
must_next()
pkts.filter_ping_reply(identifier=_pkt.icmpv6.echo.identifier).\
filter_ipv6_src(pv.vars['DUT_MLEID']).\
filter_ipv6_dst(pv.vars['LEADER_2_MLEID']).\
must_next()
if __name__ == '__main__':
verify_utils.run_main(verify)