#!/usr/bin/env python3 # # Copyright (c) 2021, 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 logging import unittest import config import pktverify from pktverify import packet_verifier, packet_filter, consts import thread_cert # Test description: # This test verifies that the Border Router will use the same RA parameters # when there is already a running radvd service on the same host. # # Topology: # ----------------(eth)-------------------- # | | # BR (Leader) HOST # | # ROUTER # BR = 1 ROUTER = 2 HOST = 3 ON_LINK_PREFIX = 'fd00::/64' class SingleBorderRouter(thread_cert.TestCase): USE_MESSAGE_FACTORY = False TOPOLOGY = { BR: { 'name': 'BR', 'allowlist': [ROUTER], 'is_otbr': True, 'version': '1.2', }, ROUTER: { 'name': 'Router', 'allowlist': [BR], 'version': '1.2', }, HOST: { 'name': 'Host', 'is_host': True }, } def test(self): br = self.nodes[BR] router = self.nodes[ROUTER] host = self.nodes[HOST] host.start(start_radvd=False) self.simulator.go(5) br.start_radvd_service(prefix=ON_LINK_PREFIX, slaac=True) self.simulator.go(5) br.start() self.simulator.go(config.LEADER_STARTUP_DELAY) self.assertEqual('leader', br.get_state()) router.start() self.simulator.go(config.ROUTER_STARTUP_DELAY) self.assertEqual('router', router.get_state()) self.simulator.go(config.BORDER_ROUTER_STARTUP_DELAY) self.collect_ipaddrs() logging.info("BR addrs: %r", br.get_addrs()) logging.info("ROUTER addrs: %r", router.get_addrs()) logging.info("HOST addrs: %r", host.get_addrs()) self.assertEqual(len(br.get_netdata_omr_prefixes()), 1) self.assertEqual(len(router.get_netdata_omr_prefixes()), 1) self.assertEqual(len(br.get_netdata_non_nat64_routes()), 1) self.assertEqual(len(router.get_netdata_non_nat64_routes()), 1) self.assertEqual(len(br.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) self.assertEqual(len(router.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) # radvd doesn't deprecates the PIO so that the Border Router will not # advertise its own on-link prefix immediately. self.assertEqual(len(host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)), 1) self.assertTrue(router.ping(host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0])) self.assertTrue(host.ping(router.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True)) # Stop the radvd service and wait for the Border Router # to reset the RA parameters. br.stop_radvd_service() self.simulator.go(15) self.assertEqual(len(br.get_netdata_omr_prefixes()), 1) self.assertEqual(len(router.get_netdata_omr_prefixes()), 1) self.assertEqual(len(br.get_netdata_non_nat64_routes()), 1) self.assertEqual(len(router.get_netdata_non_nat64_routes()), 1) self.assertEqual(len(br.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) self.assertEqual(len(router.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) self.assertEqual(len(host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)), 1) self.assertTrue(router.ping(host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0])) self.assertTrue(host.ping(router.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True)) self.collect_ipaddrs() self.collect_rloc16s() self.collect_rlocs() self.collect_extra_vars() def verify(self, pv: pktverify.packet_verifier.PacketVerifier): RA_OPT_TYPE_PIO = 3 RA_OPT_TYPE_RIO = 24 pkts = pv.pkts vars = pv.vars pv.summary.show() logging.info(f'vars = {vars}') # Ensure the topology is formed correctly pv.verify_attached('Router', 'BR') # verify that radvd sends RA messages with PIO. radvd_ra = pkts.filter_eth_src(vars['BR_ETH']) \ .filter_icmpv6_nd_ra() \ .filter(lambda p: RA_OPT_TYPE_PIO in p.icmpv6.opt.type) \ .must_next() # Verify that the BR sends RA messages with the same parameters. br_ra = pkts.filter_eth_src(vars['BR_ETH']) \ .filter_icmpv6_nd_ra() \ .filter(lambda p: RA_OPT_TYPE_RIO in p.icmpv6.opt.type) \ .filter(lambda p: p.icmpv6.nd.ra.router_lifetime == radvd_ra.icmpv6.nd.ra.router_lifetime) \ .filter(lambda p: p.icmpv6.nd.ra.retrans_timer == radvd_ra.icmpv6.nd.ra.retrans_timer) \ .filter(lambda p: p.icmpv6.nd.ra.reachable_time == radvd_ra.icmpv6.nd.ra.reachable_time) \ .must_next() # Verify that radvd sends at lease one RA message with zero Router Lifetime # when it is stopped. pkts.filter_eth_src(vars['BR_ETH']) \ .filter_icmpv6_nd_ra() \ .filter(lambda p: RA_OPT_TYPE_PIO in p.icmpv6.opt.type) \ .filter(lambda p: p.icmpv6.nd.ra.router_lifetime == 0) \ .must_next() # Verify that the BR forgets radvd's RA parameters. pkts.filter_eth_src(vars['BR_ETH']) \ .filter_icmpv6_nd_ra() \ .filter(lambda p: RA_OPT_TYPE_RIO in p.icmpv6.opt.type) \ .filter(lambda p: p.icmpv6.nd.ra.router_lifetime == 0) \ .filter(lambda p: p.icmpv6.nd.ra.retrans_timer == 0) \ .filter(lambda p: p.icmpv6.nd.ra.reachable_time == 0) \ .must_next() # TODO: verify that the BR forgets the radvd's RA parameters in # a period after radvd is force killed. if __name__ == '__main__': unittest.main()