diff --git a/tests/nexus/CMakeLists.txt b/tests/nexus/CMakeLists.txt index 072db7138..139539040 100644 --- a/tests/nexus/CMakeLists.txt +++ b/tests/nexus/CMakeLists.txt @@ -217,6 +217,7 @@ ot_nexus_test(1_1_9_2_18 "cert;nexus") ot_nexus_test(1_1_9_2_19 "cert;nexus") ot_nexus_test(1_2_LP_5_3_1 "cert;nexus") ot_nexus_test(1_2_LP_5_3_2 "cert;nexus") +ot_nexus_test(1_2_LP_5_3_3 "cert;nexus") # Misc tests ot_nexus_test(border_admitter "core;nexus") diff --git a/tests/nexus/run_nexus_tests.sh b/tests/nexus/run_nexus_tests.sh index 3dcac3687..fb42c35df 100755 --- a/tests/nexus/run_nexus_tests.sh +++ b/tests/nexus/run_nexus_tests.sh @@ -152,6 +152,7 @@ DEFAULT_TESTS=( "1_1_9_2_19" "1_2_LP_5_3_1" "1_2_LP_5_3_2" + "1_2_LP_5_3_3" ) # Use provided arguments or the default test list diff --git a/tests/nexus/test_1_2_LP_5_3_3.cpp b/tests/nexus/test_1_2_LP_5_3_3.cpp new file mode 100644 index 000000000..343708e00 --- /dev/null +++ b/tests/nexus/test_1_2_LP_5_3_3.cpp @@ -0,0 +1,317 @@ +/* + * 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 + +#include "mac/data_poll_sender.hpp" +#include "platform/nexus_core.hpp" +#include "platform/nexus_node.hpp" + +namespace ot { +namespace Nexus { + +/** + * Time to advance for a node to form a network and become leader, in milliseconds. + */ +static constexpr uint32_t kFormNetworkTime = 13 * 1000; + +/** + * Time to advance for a node to join as a child and upgrade to a router, in milliseconds. + */ +static constexpr uint32_t kAttachToRouterTime = 200 * 1000; + +/** + * Time to advance for a node to join as a SSED. + */ +static constexpr uint32_t kAttachAsSsedTime = 20 * 1000; + +/** + * Time to wait for SSED CSL timeout at DUT, in milliseconds. + */ +static constexpr uint32_t kSsedUnsyncWaitTime = 25 * 1000; + +/** + * Time to wait for CSL synchronization to resume, in milliseconds. + */ +static constexpr uint32_t kWaitTime18s = 18 * 1000; + +/** + * CSL period in milliseconds. + */ +static constexpr uint32_t kCslPeriodMs = 500; + +/** + * CSL timeout in seconds. + */ +static constexpr uint32_t kCslTimeout = 20; + +/** + * Time to advance for ICMPv6 Echo Request/Response, in milliseconds. + */ +static constexpr uint32_t kEchoWaitTime = kCslPeriodMs * 2; + +/** + * Time to advance for CSL synchronization to complete, in milliseconds. + */ +static constexpr uint32_t kCslSyncTime = 5 * 1000; + +/** + * ICMPv6 Echo Request Identifiers. + */ +static constexpr uint16_t kEchoId1 = 0x01; +static constexpr uint16_t kEchoId2 = 0x02; +static constexpr uint16_t kEchoId3 = 0x03; + +/** + * Time to advance for the final ICMPv6 Echo Request, in milliseconds. + */ +static constexpr uint32_t kFinalEchoWaitTime = kCslPeriodMs * 4; + +/** + * Payload size for ICMPv6 Echo Request. + */ +static constexpr uint16_t kEchoPayloadSize = 10; + +void Test1_2_LP_5_3_3(void) +{ + /** + * 5.3.3 SSED Becomes Unsynchronized + * + * 5.3.3.1 Topology + * - Leader (DUT) + * - Router 1 + * - SSED 1 + * + * 5.3.3.2 Purpose & Description + * The purpose of this test is to validate that when the DUT considers the SSED unsynchronized, it does not use CSL + * transmission to transmit any messages, but rather falls back to indirect transmission until the SSED is CSL + * synchronized again. + * + * Spec Reference | V1.2 Section + * ------------------------------|-------------- + * SSED Becomes Unsynchronized | 4.6.5.1.1 + */ + + Core nexus; + + Node &dut = nexus.CreateNode(); + Node &router1 = nexus.CreateNode(); + Node &ssed1 = nexus.CreateNode(); + + dut.SetName("DUT"); + router1.SetName("ROUTER_1"); + ssed1.SetName("SSED_1"); + + nexus.AdvanceTime(0); + + Instance::SetLogLevel(kLogLevelNote); + + /** + * Step 0: SSED_1 + * - Description: Preconditions: Set CSL Synchronized Timeout = 20s. Set CSL Period = 500ms. + * - Pass Criteria: N/A. + */ + Log("Step 0: SSED_1"); + + /** + * Step 1: All + * - Description: Topology formation: DUT, Router_1, SSED_1. + * - Pass Criteria: N/A. + */ + Log("Step 1: All"); + + /** + * Use AllowList to specify links between nodes. There is a link between the following node pairs: + * - Leader (DUT) and Router 1 + * - Leader (DUT) and SSED 1 + */ + dut.AllowList(router1); + router1.AllowList(dut); + + dut.AllowList(ssed1); + ssed1.AllowList(dut); + + dut.Form(); + nexus.AdvanceTime(kFormNetworkTime); + VerifyOrQuit(dut.Get().IsLeader()); + + router1.Join(dut); + nexus.AdvanceTime(kAttachToRouterTime); + VerifyOrQuit(router1.Get().IsRouter()); + + /** + * Step 2: SSED_1 + * - Description: Automatically attaches to the DUT and establishes CSL synchronization. + * - Pass Criteria: + * - The DUT MUST sent MLE Child ID Response to SSED_1. + * - The DUT MUST unicast MLE Child Update Response to SSED_1. + */ + Log("Step 2: SSED_1"); + + ssed1.Join(dut, Node::kAsSed); + nexus.AdvanceTime(kAttachAsSsedTime); + VerifyOrQuit(ssed1.Get().IsAttached()); + + ssed1.Get().SetCslPeriod(kCslPeriodMs * 1000 / OT_US_PER_TEN_SYMBOLS); + ssed1.Get().SetCslTimeout(kCslTimeout); + + nexus.AdvanceTime(kCslSyncTime); + VerifyOrQuit(ssed1.Get().GetCslPeriod() > 0); + + /** + * Step 3: Router_1 + * - Description: Harness verifies connectivity by instructing the device to send an ICMPv6 Echo Request to SSED_1 + * mesh-local address. + * - Pass Criteria: The DUT MUST buffer the ICMPv6 Echo Request frame and relay it to SSED_1 within a subsequent CSL + * slot. + */ + Log("Step 3: Router_1"); + + router1.SendEchoRequest(ssed1.Get().GetMeshLocalEid(), kEchoId1, kEchoPayloadSize); + nexus.AdvanceTime(kEchoWaitTime); + + /** + * Step 4: SSED_1 + * - Description: Automatically replies with ICMPv6 Echo Reply. + * - Pass Criteria: The DUT MUST forward the ICMPv6 Echo Reply from SSED_1. + */ + Log("Step 4: SSED_1"); + + nexus.AdvanceTime(kEchoWaitTime); + + /** + * Step 5: SSED_1 + * - Description: Harness instructs the device to stop sending periodic synchronization data poll frames. + * - Pass Criteria: N/A. + */ + Log("Step 5: SSED_1"); + + ssed1.Get().StopPolling(); + + /** + * Step 6: Harness + * - Description: Harness waits 25 seconds to time out the SSED / CSL connection. + * - Pass Criteria: N/A (Implicit). + */ + Log("Step 6: Harness"); + + nexus.AdvanceTime(kSsedUnsyncWaitTime); + + /** + * Step 7: Router_1 + * - Description: Harness verifies connectivity by instructing the device to send an ICMPv6 Echo Request to the + * SSED_1 mesh-local address. + * - Pass Criteria: N/A. + */ + Log("Step 7: Router_1"); + + router1.SendEchoRequest(ssed1.Get().GetMeshLocalEid(), kEchoId2, kEchoPayloadSize); + + /** + * Step 8: Leader (DUT) + * - Description: Automatically buffers the frame for SSED_1 in the indirect (SED) queue. + * - Pass Criteria: The DUT MUST NOT relay the ICMPv6 Echo Request frame to SSED_1. + */ + Log("Step 8: Leader (DUT)"); + + nexus.AdvanceTime(kEchoWaitTime); + + /** + * Step 9: SSED_1 + * - Description: Harness instructs the device to resume sending synchronization messages containing CSL IEs. + * - Pass Criteria: N/A. + */ + Log("Step 9: SSED_1"); + + ssed1.Get().StartPolling(); + + /** + * Step 10: Harness + * - Description: Harness waits 18 seconds for the SSED / CSL connection to resume. + * - Pass Criteria: N/A (Implicit). + */ + Log("Step 10: Harness"); + + nexus.AdvanceTime(kWaitTime18s); + + /** + * Step 11: Leader (DUT) + * - Description: Automatically sends MAC Acknowledgement then relays the message. + * - Pass Criteria: The DUT MUST verify that the Frame Pending bit is set and successfully transmits the ICMPv6 Echo + * Request. + */ + Log("Step 11: Leader (DUT)"); + + nexus.AdvanceTime(kEchoWaitTime); + + /** + * Step 12: SSED_1 + * - Description: Automatically responds with ICMPv6 Echo Reply. + * - Pass Criteria: + * - SSED_1 MUST respond with ICMPv6 Echo Reply. + * - The DUT MUST relay the ICMPv6 Echo Reply to Router_1. + */ + Log("Step 12: SSED_1"); + + nexus.AdvanceTime(kEchoWaitTime); + + /** + * Step 12b: SSED_1 + * - Description: Harness instructs the device to stop sending periodic synchronization data poll frames. + * - Pass Criteria: N/A. + */ + Log("Step 12b: SSED_1"); + + ssed1.Get().StopPolling(); + + /** + * Step 13: Router_1 + * - Description: Harness verifies CSL synchronization by instructing the device to send an ICMPv6 Echo Request to + * the SSED_1 mesh-local address. + * - Pass Criteria: + * - The DUT MUST buffer the ICMPv6 Echo Request frame and relay it to SSED_1 within a subsequent CSL slot. + * - SSED_1 MUST respond with ICMPv6 Echo Reply. + * - The DUT MUST relay the ICMPv6 Echo Reply to Router_1. + */ + Log("Step 13: Router_1"); + + router1.SendEchoRequest(ssed1.Get().GetMeshLocalEid(), kEchoId3, kEchoPayloadSize); + nexus.AdvanceTime(kFinalEchoWaitTime); + + nexus.SaveTestInfo("test_1_2_LP_5_3_3.json"); +} + +} // namespace Nexus +} // namespace ot + +int main(void) +{ + ot::Nexus::Test1_2_LP_5_3_3(); + printf("All tests passed\n"); + return 0; +} diff --git a/tests/nexus/verify_1_2_LP_5_3_3.py b/tests/nexus/verify_1_2_LP_5_3_3.py new file mode 100644 index 000000000..767c17893 --- /dev/null +++ b/tests/nexus/verify_1_2_LP_5_3_3.py @@ -0,0 +1,273 @@ +#!/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): + # 5.3.3 SSED Becomes Unsynchronized + # + # 5.3.3.1 Topology + # - Leader (DUT) + # - Router 1 + # - SSED 1 + # + # 5.3.3.2 Purpose & Description + # The purpose of this test is to validate that when the DUT considers the SSED unsynchronized, it does not use CSL + # transmission to transmit any messages, but rather falls back to indirect transmission until the SSED is CSL + # synchronized again. + # + # Spec Reference | V1.2 Section + # ------------------------------|------------- + # SSED Becomes Unsynchronized | 4.6.5.1.1 + + pkts = pv.pkts + pv.summary.show() + + DUT = pv.vars['DUT'] + DUT_RLOC16 = pv.vars['DUT_RLOC16'] + ROUTER_1 = pv.vars['ROUTER_1'] + ROUTER_1_RLOC16 = pv.vars['ROUTER_1_RLOC16'] + SSED_1 = pv.vars['SSED_1'] + SSED_1_RLOC16 = pv.vars['SSED_1_RLOC16'] + + # Step 0: SSED_1 + # - Description: Preconditions: Set CSL Synchronized Timeout = 20s. Set CSL Period = 500ms. + # - Pass Criteria: N/A. + print("Step 0: SSED_1 configuration") + + # Step 1: All + # - Description: Topology formation: DUT, Router_1, SSED_1. + # - Pass Criteria: N/A. + print("Step 1: Topology formation") + + # Step 2: SSED_1 + # - Description: Automatically attaches to the DUT and establishes CSL synchronization. + # - Pass Criteria: + # - The DUT MUST sent MLE Child ID Response to SSED_1. + # - The DUT MUST unicast MLE Child Update Response to SSED_1. + print("Step 2: SSED_1 attaches to DUT and establishes CSL synchronization") + + pkts.filter_wpan_src64(DUT).\ + filter_wpan_dst64(SSED_1).\ + filter_mle_cmd(consts.MLE_CHILD_ID_RESPONSE).\ + must_next() + + pkts.filter_wpan_src64(SSED_1).\ + filter_wpan_dst64(DUT).\ + filter_mle_cmd(consts.MLE_CHILD_UPDATE_REQUEST).\ + filter(lambda p: p.wpan.version == 2).\ + filter(lambda p: p.wpan.header_ie.csl.period == 3125).\ + must_next() + + pkts.filter_wpan_src64(DUT).\ + filter_wpan_dst64(SSED_1).\ + filter_mle_cmd(consts.MLE_CHILD_UPDATE_RESPONSE).\ + filter(lambda p: p.wpan.version == 2).\ + must_next() + + # Step 3: Router_1 + # - Description: Harness verifies connectivity by instructing the device to send an ICMPv6 Echo Request to SSED_1 + # mesh-local address. + # - Pass Criteria: The DUT MUST buffer the ICMPv6 Echo Request frame and relay it to SSED_1 within a subsequent CSL + # slot. + print("Step 3: Router_1 sends ICMPv6 Echo Request to SSED_1") + + # ICMPv6 Echo Request from Router_1 to SSED_1 + echo_req_1 = pkts.filter_ping_request().\ + filter_wpan_src64(ROUTER_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + filter_ipv6_dst(pv.vars['SSED_1_MLEID']).\ + must_next() + + # Relayed ICMPv6 Echo Request from DUT to SSED_1 using CSL (wpan.version == 2) + pkts.filter_ping_request().\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(SSED_1_RLOC16).\ + filter(lambda p: p.wpan.version == 2).\ + must_next() + + # Step 4: SSED_1 + # - Description: Automatically replies with ICMPv6 Echo Reply. + # - Pass Criteria: The DUT MUST forward the ICMPv6 Echo Reply from SSED_1. + print("Step 4: SSED_1 replies with ICMPv6 Echo Reply") + + echo_rep_1 = pkts.filter_ping_reply(identifier=echo_req_1.icmpv6.echo.identifier).\ + filter_wpan_src64(SSED_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + must_next() + + pkts.filter_ping_reply(identifier=echo_req_1.icmpv6.echo.identifier).\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(ROUTER_1_RLOC16).\ + must_next() + + # Step 5: SSED_1 + # - Description: Harness instructs the device to stop sending periodic synchronization data poll frames. + # - Pass Criteria: N/A. + print("Step 5: SSED_1 stops periodic synchronization data poll frames") + + # Step 6: Harness + # - Description: Harness waits 25 seconds to time out the SSED / CSL connection. + # - Pass Criteria: N/A (Implicit). + print("Step 6: Harness waits 25 seconds") + + # Step 7: Router_1 + # - Description: Harness verifies connectivity by instructing the device to send an ICMPv6 Echo Request to the + # SSED_1 mesh-local address. + # - Pass Criteria: N/A. + print("Step 7: Router_1 sends ICMPv6 Echo Request to SSED_1") + + echo_req_2 = pkts.filter_ping_request().\ + filter_wpan_src64(ROUTER_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + filter_ipv6_dst(pv.vars['SSED_1_MLEID']).\ + must_next() + + # Step 8: Leader (DUT) + # - Description: Automatically buffers the frame for SSED_1 in the indirect (SED) queue. + # - Pass Criteria: The DUT MUST NOT relay the ICMPv6 Echo Request frame to SSED_1. + print("Step 8: DUT buffers the frame and does NOT relay it via CSL") + + # We will verify this by checking that no such packet exists before Step 11's Data Request. + + # Step 9: SSED_1 + # - Description: Harness instructs the device to resume sending synchronization messages containing CSL IEs. + # - Pass Criteria: N/A. + print("Step 9: SSED_1 resumes synchronization messages") + + # Step 10: Harness + # - Description: Harness waits 18 seconds for the SSED / CSL connection to resume. + # - Pass Criteria: N/A (Implicit). + print("Step 10: Harness waits 18 seconds") + + # Step 11: Leader (DUT) + # - Description: Automatically sends MAC Acknowledgement then relays the message. + # - Pass Criteria: The DUT MUST verify that the Frame Pending bit is set and successfully transmits the ICMPv6 Echo + # Request. + print("Step 11: DUT sends MAC Ack with Frame Pending and relays the message") + + # SSED_1 sends a Data Request or MLE Child Update Request (re-sync) to DUT + data_req = pkts.filter(lambda p: (p.wpan.src64 == SSED_1 or p.wpan.src16 == SSED_1_RLOC16)).\ + filter_wpan_dst16(DUT_RLOC16).\ + filter(lambda p: (p.wpan.frame_type == consts.WPAN_CMD and p.wpan.cmd == consts.WPAN_DATA_REQUEST) or\ + (p.wpan.frame_type == consts.WPAN_DATA and hasattr(p, 'mle') and p.mle.cmd == consts.MLE_CHILD_UPDATE_REQUEST)).\ + must_next() + + # Verify that the frame was NOT relayed before the Data Request/re-sync (Step 8 Pass Criteria) + pkts.range((echo_req_2.number, 0), (data_req.number, 0)).\ + filter_ping_request().\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(SSED_1_RLOC16).\ + must_not_next() + + # DUT responds with an ACK that has Frame Pending set (1) + pkts.filter_wpan_ack().\ + filter(lambda p: p.wpan.seq_no == data_req.wpan.seq_no).\ + filter(lambda p: p.wpan.pending == 1).\ + must_next() + + # Relayed ICMPv6 Echo Request from DUT to SSED_1 (indirect transmission) + pkts.filter_ping_request().\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(SSED_1_RLOC16).\ + filter(lambda p: p.wpan.version == consts.MAC_FRAME_VERSION_2015).\ + must_next() + + # Step 12: SSED_1 + # - Description: Automatically responds with ICMPv6 Echo Reply. + # - Pass Criteria: + # - SSED_1 MUST respond with ICMPv6 Echo Reply. + # - The DUT MUST relay the ICMPv6 Echo Reply to Router_1. + print("Step 12: SSED_1 responds with ICMPv6 Echo Reply") + + echo_rep_2 = pkts.filter_ping_reply(identifier=echo_req_2.icmpv6.echo.identifier).\ + filter_wpan_src64(SSED_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + must_next() + + pkts.filter_ping_reply(identifier=echo_req_2.icmpv6.echo.identifier).\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(ROUTER_1_RLOC16).\ + must_next() + + # Step 12b: SSED_1 + # - Description: Harness instructs the device to stop sending periodic synchronization data poll frames. + # - Pass Criteria: N/A. + print("Step 12b: SSED_1 stops periodic synchronization data poll frames") + + # Step 13: Router_1 + # - Description: Harness verifies CSL synchronization by instructing the device to send an ICMPv6 Echo Request to + # the SSED_1 mesh-local address. + # - Pass Criteria: + # - The DUT MUST buffer the ICMPv6 Echo Request frame and relay it to SSED_1 within a subsequent CSL slot. + # - SSED_1 MUST respond with ICMPv6 Echo Reply. + # - The DUT MUST relay the ICMPv6 Echo Reply to Router_1. + print("Step 13: Router_1 sends ICMPv6 Echo Request to SSED_1 (CSL relay)") + + echo_req_3 = pkts.filter_ping_request().\ + filter_wpan_src64(ROUTER_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + filter_ipv6_dst(pv.vars['SSED_1_MLEID']).\ + must_next() + + # Relayed ICMPv6 Echo Request from DUT to SSED_1 using CSL (wpan.version == 2) + # We verify it is CSL by checking that no Data Request was sent by SSED_1 before this frame. + relay_req_3 = pkts.filter_ping_request().\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(SSED_1_RLOC16).\ + filter(lambda p: p.wpan.version == 2).\ + must_next() + + pkts.range((echo_req_3.number, 0), (relay_req_3.number, 0)).\ + filter_wpan_src64(SSED_1).\ + filter_wpan_cmd(consts.WPAN_DATA_REQUEST).\ + must_not_next() + + echo_rep_3 = pkts.filter_ping_reply(identifier=echo_req_3.icmpv6.echo.identifier).\ + filter_wpan_src64(SSED_1).\ + filter_wpan_dst16(DUT_RLOC16).\ + must_next() + + pkts.filter_ping_reply(identifier=echo_req_3.icmpv6.echo.identifier).\ + filter_wpan_src64(DUT).\ + filter_wpan_dst16(ROUTER_1_RLOC16).\ + must_next() + + +if __name__ == '__main__': + verify_utils.run_main(verify)