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openthread/tests/toranj/cli/test-008-multicast-traffic.py
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Abtin Keshavarzian 42635a12b2 [test] enhance test-008-multicast-traffic.py (#12816) 
This commit updates `test-008-multicast-traffic.py` to use a strict
equality check for the number of multicast `ping` responses when the
ping originates from an SED.

The test now also verifies the `RxSuccess` IP counter on the SED to
ensure it increases by exactly the number of expected replies. This
confirms that the parent correctly avoids forwarding the original
multicast echo request back to the originating SED, even if the SED
is subscribed to the multicast address. This validates the behavior
introduced in PR #12329.
2026-04-02 00:07:15 -05:00

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#!/usr/bin/env python3
#
# Copyright (c) 2022, 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.
from cli import verify
from cli import verify_within
import cli
import time
# -----------------------------------------------------------------------------------------------------------------------
# Test description: Multicast traffic
#
# Network topology
#
# r1 ---- r2 ---- r3 ---- r4
# | |
# | |
# fed sed
#
# Test covers the following multicast traffic:
#
# - r2 =>> link-local all-nodes. Expected response from [r1, r3, fed].
# - r3 =>> mesh-local all-nodes. Expected response from [r1, r2, r4, fed].
# - r3 =>> link-local all-routers. Expected response from [r2, r4].
# - r3 =>> mesh-local all-routers. Expected response from all routers.
# - r1 =>> link-local all-thread. Expected response from [r1, r2].
# - fed =>> mesh-local all-thread. Expected response from all nodes.
# - r1 =>> mesh-local all-thread (one hop). Expected response from [r2].
# - r1 =>> mesh-local all-thread (two hops). Expected response from [r2, r3, fed].
# - r1 =>> mesh-local all-thread (three hops). Expected response from [r2, r3, r4, fed].
# - r1 =>> mesh-local all-thread (four hops). Expected response from [r2, r3, r4, fed, sed].
#
# - r1 =>> realm-local scope mcast addr (on r2 and sed). Expected to receive on [r2, sed].
# - r2 =>> realm-local scope mcast addr (on r2 and sed) without `multicast-loop`. Expected to receive from [sed].
# - r2 =>> realm-local scope mcast addr (on r2 and sed) with `multicast-loop`. Expected to receive from [r2, sed].
# - sed =>> realm-local scope mcast addr (on r2 and sed) without `multicast-loop`. Expected to receive from [r2].
# - sed =>> realm-local scope mcast addr (on r2 and sed) with `multicast-loop`. Expected to receive from [r2, sed].
#
# - r3 =>> site-local mcast addr (on r1, r2, sed). Expected to receive from [r1, r2, sed].
# - r1 =>> site-local mcast addr (on r1, r2, sed) with `multicast-loop`. Expected to receive from [r1, r2, sed].
# - r1 =>> site-local mcast addr (on r1, r2, sed) without `multicast-loop`. Expected to receive from [r2, sed].
# - sed =>> site-local mcast addr (on r1, r2, sed). Expected to receive from [r1, r2].
test_name = __file__[:-3] if __file__.endswith('.py') else __file__
print('-' * 120)
print('Starting \'{}\''.format(test_name))
# -----------------------------------------------------------------------------------------------------------------------
# Creating `cli.Nodes` instances
speedup = 10
cli.Node.set_time_speedup_factor(speedup)
r1 = cli.Node()
r2 = cli.Node()
r3 = cli.Node()
r4 = cli.Node()
fed = cli.Node()
sed = cli.Node()
# -----------------------------------------------------------------------------------------------------------------------
# Form topology
r1.allowlist_node(r2)
r2.allowlist_node(r1)
r2.allowlist_node(fed)
r2.allowlist_node(r3)
fed.allowlist_node(r2)
r3.allowlist_node(r2)
r3.allowlist_node(r4)
r4.allowlist_node(r3)
r4.allowlist_node(sed)
sed.allowlist_node(r4)
r1.form("multicast")
r2.join(r1)
r3.join(r2)
r4.join(r3)
fed.join(r1, cli.JOIN_TYPE_REED)
sed.join(r3, cli.JOIN_TYPE_SLEEPY_END_DEVICE)
sed.set_pollperiod(600)
verify(r1.get_state() == 'leader')
verify(r2.get_state() == 'router')
verify(r3.get_state() == 'router')
verify(r4.get_state() == 'router')
verify(fed.get_state() == 'child')
verify(sed.get_state() == 'child')
# -----------------------------------------------------------------------------------------------------------------------
# Test Implementation
# Wait till first router has either established a link or
# has a valid "next hop" towards all other routers.
r1_rloc16 = int(r1.get_rloc16(), 16)
def check_r1_router_table():
table = r1.get_router_table()
verify(len(table) == 4)
for entry in table:
verify(int(entry['RLOC16'], 0) == r1_rloc16 or int(entry['Link']) == 1 or int(entry['Next Hop']) != 63)
verify_within(check_r1_router_table, 160)
# r2 =>> link-local all-nodes. Expected response from [r1, r3, fed].
outputs = r2.cli('ping ff02::1')
verify(len(outputs) == 4)
for node in [r1, r3, fed]:
ll_addr = node.get_linklocal_ip_addr()
verify(any(ll_addr in line for line in outputs))
# r3 =>> mesh-local all-nodes. Expected response from [r1, r2, r4, fed].
outputs = r3.cli('ping ff03::1')
verify(len(outputs) == 5)
for node in [r1, r2, r4, fed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r3 =>> link-local all-routers. Expected response from [r2, r4].
outputs = r3.cli('ping ff02::2')
verify(len(outputs) == 3)
for node in [r2, r4]:
ll_addr = node.get_linklocal_ip_addr()
verify(any(ll_addr in line for line in outputs))
# r3 =>> mesh-local all-routers. Expected response from all routers.
outputs = r3.cli('ping ff03::2')
verify(len(outputs) == 5)
for node in [r1, r2, r4, fed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> link-local all-thread. Expected response from [r2].
ml_prefix = r1.get_mesh_local_prefix().strip().split('/')[0]
ll_all_thread_nodes_addr = 'ff32:40:' + ml_prefix + '1'
outputs = r1.cli('ping', ll_all_thread_nodes_addr)
verify(len(outputs) == 2)
for node in [r2]:
ll_addr = node.get_linklocal_ip_addr()
verify(any(ll_addr in line for line in outputs))
# fed =>> mesh-local all-thread. Expected response from all nodes.
ml_all_thread_nodes_addr = 'ff33:40:' + ml_prefix + '1'
outputs = fed.cli('ping', ml_all_thread_nodes_addr)
verify(len(outputs) == 6)
for node in [r1, r2, r3, r4, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# Repeat the same with larger ping msg requiring fragmentation
outputs = fed.cli('ping', ml_all_thread_nodes_addr, 200)
verify(len(outputs) == 6)
for node in [r1, r2, r3, r4, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> mesh-local all-thread (one hop). Expected response from [r2].
hop_limit = 1
outputs = r1.cli('ping', ml_all_thread_nodes_addr, 10, 1, 0, hop_limit)
verify(len(outputs) == 2)
for node in [r2]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> mesh-local all-thread (two hops). Expected response from [r2, r3, fed].
hop_limit = 2
outputs = r1.cli('ping', ml_all_thread_nodes_addr, 10, 1, 0, hop_limit)
verify(len(outputs) == 4)
for node in [r2, r3, fed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> mesh-local all-thread (three hops). Expected response from [r2, r3, r4, fed].
hop_limit = 3
outputs = r1.cli('ping', ml_all_thread_nodes_addr, 10, 1, 0, hop_limit)
verify(len(outputs) == 5)
for node in [r2, r3, r4, fed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> mesh-local all-thread (four hops). Expected response from [r2, r3, r4, fed, sed].
hop_limit = 4
outputs = r1.cli('ping', ml_all_thread_nodes_addr, 10, 1, 0, hop_limit)
verify(len(outputs) == 6)
for node in [r2, r3, r4, fed, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Subscribe to a realm-local scope multicast address on r2 and sed
mcast_addr = 'ff03:0:0:0:0:0:0:114'
r2.add_ip_maddr(mcast_addr)
sed.add_ip_maddr(mcast_addr)
time.sleep(1)
maddrs = r2.get_ip_maddrs()
verify(any(mcast_addr in maddr for maddr in maddrs))
maddrs = sed.get_ip_maddrs()
verify(any(mcast_addr in maddr for maddr in maddrs))
# r1 =>> realm-local scope mcast addr (on r2 and sed). Expected to receive on [r2, sed].
outputs = r1.cli('ping', mcast_addr)
verify(len(outputs) == 3)
for node in [r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r2 =>> realm-local scope mcast addr (on r2 and sed) without `multicast-loop`. Expected to receive from [sed].
outputs = r2.cli('ping', mcast_addr)
verify(len(outputs) == 2)
for node in [sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r2 =>> realm-local scope mcast addr (on r2 and sed) with `multicast-loop`. Expected to receive from [r2, sed].
outputs = r2.cli('ping', '-m', mcast_addr)
verify(len(outputs) == 3)
for node in [r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# sed =>> realm-local scope mcast addr (on r2 and sed) without `multicast-loop`. Expected to receive from [r2].
outputs = sed.cli('ping', mcast_addr)
verify(len(outputs) == 2)
for node in [r2]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# sed =>> realm-local scope mcast addr (on r2 and sed) with `multicast-loop`. Expected to receive from [r2, sed].
outputs = sed.cli('ping', '-m', mcast_addr)
verify(len(outputs) == 3)
for node in [r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Subscribe to a larger than realm-local scope (site-local) multicast address on r1, r2, and sed
mcast_addr = 'ff05:0:0:0:0:0:0:abcd'
r1.add_ip_maddr(mcast_addr)
r2.add_ip_maddr(mcast_addr)
sed.add_ip_maddr(mcast_addr)
time.sleep(1)
maddrs = r1.get_ip_maddrs()
verify(any(mcast_addr in maddr for maddr in maddrs))
maddrs = r2.get_ip_maddrs()
verify(any(mcast_addr in maddr for maddr in maddrs))
maddrs = sed.get_ip_maddrs()
verify(any(mcast_addr in maddr for maddr in maddrs))
# r3 =>> site-local mcast addr (on r1, r2, sed) with `multicast-loop`. Expected to receive from [r1, r2, sed].
outputs = r3.cli('ping', '-m', mcast_addr)
verify(len(outputs) == 4)
for node in [r1, r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> site-local mcast addr (on r1, r2, sed) with `multicast-loop`. Expected to receive from [r1, r2, sed].
outputs = r1.cli('ping', '-m', mcast_addr)
verify(len(outputs) == 4)
for node in [r1, r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# r1 =>> site-local mcast addr (on r1, r2, sed) without `multicast-loop`. Expected to receive from [r2, sed].
outputs = r1.cli('ping', mcast_addr)
verify(len(outputs) == 3)
for node in [r2, sed]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# sed =>> site-local mcast addr (on r1, r2, sed) without `multicast-loop`. Expected to receive from [r1, r2].
old_counters = sed.get_ip_counters()
outputs = sed.cli('ping', mcast_addr)
new_counters = sed.get_ip_counters()
verify(len(outputs) == 3)
for node in [r1, r2]:
ml_addr = node.get_mleid_ip_addr()
verify(any(ml_addr in line for line in outputs))
# Validate that the `RxSuccess` counter increased by exactly two (for the
# two ping replies). This confirms the parent did not forward the original
# echo request back to the SED, even though the SED is also subscribed to
# this address. The parent must not forward a multicast packet back to an
# SED if the packet originated from that SED itself.
verify(int(new_counters['RxSuccess']) == int(old_counters['RxSuccess']) + 2)
# -----------------------------------------------------------------------------------------------------------------------
# Test finished
cli.Node.finalize_all_nodes()
print('\'{}\' passed.'.format(test_name))
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