250 lines
9.4 KiB
Python
250 lines
9.4 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2020, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# This test verifies that PBBR sets DUA routes correctly.
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#
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import ipaddress
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import unittest
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import config
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import thread_cert
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from pktverify.packet_verifier import PacketVerifier
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# Use two channels
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CH1 = 11
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CH2 = 22
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PBBR = 1
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SBBR = 2
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ROUTER1 = 3
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HOST = 4
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PBBR2 = 5
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ROUTER2 = 6
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REREG_DELAY = 5 # Seconds
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MLR_TIMEOUT = 300 # Seconds
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WAIT_REDUNDANCE = 3
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class TestNdProxy(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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# Topology:
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# ------(eth)----------------------
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# | | | |
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# PBBR----SBBR HOST PBBR2
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# \ CH1 / | CH2
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# ROUTER1 ROUTER2
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#
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# PBBR2 is in the secondary channel
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#
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TOPOLOGY = {
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PBBR: {
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'name': 'PBBR',
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'allowlist': [SBBR, ROUTER1],
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'is_otbr': True,
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'version': '1.2',
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'channel': CH1,
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'router_id_range': [0, 30],
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},
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SBBR: {
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'name': 'SBBR',
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'allowlist': [PBBR, ROUTER1],
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'is_otbr': True,
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'version': '1.2',
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'channel': CH1,
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},
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ROUTER1: {
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'name': 'ROUTER1',
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'allowlist': [PBBR, SBBR],
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'version': '1.2',
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'channel': CH1,
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},
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HOST: {
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'name': 'HOST',
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'is_host': True
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},
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PBBR2: {
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'name': 'PBBR2',
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'is_otbr': True,
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'version': '1.2',
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'channel': CH2,
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'router_id_range': [31, 60],
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},
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ROUTER2: {
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'name': 'ROUTER2',
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'version': '1.2',
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'channel': CH2,
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},
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}
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def _bootstrap(self):
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# Bring up HOST
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self.nodes[HOST].start()
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# Bring up PBBR
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self.nodes[PBBR].start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual('leader', self.nodes[PBBR].get_state())
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self.wait_node_state(PBBR, 'leader', 10)
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self.nodes[PBBR].set_backbone_router(reg_delay=REREG_DELAY, mlr_timeout=MLR_TIMEOUT)
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self.nodes[PBBR].enable_backbone_router()
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self.nodes[PBBR].set_domain_prefix(config.DOMAIN_PREFIX, 'prosD')
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self.simulator.go(5)
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self.assertTrue(self.nodes[PBBR].is_primary_backbone_router)
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self.assertIsNotNone(self.nodes[PBBR].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up SBBR
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self.nodes[SBBR].start()
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self.simulator.go(5)
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self.assertEqual('router', self.nodes[SBBR].get_state())
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self.nodes[SBBR].set_backbone_router(reg_delay=REREG_DELAY, mlr_timeout=MLR_TIMEOUT)
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self.nodes[SBBR].enable_backbone_router()
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self.simulator.go(5)
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self.assertFalse(self.nodes[SBBR].is_primary_backbone_router)
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self.assertIsNotNone(self.nodes[SBBR].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up ROUTER1
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self.nodes[ROUTER1].start()
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self.simulator.go(5)
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self.assertEqual('router', self.nodes[ROUTER1].get_state())
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self.assertIsNotNone(self.nodes[ROUTER1].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up PBBR2
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self.nodes[PBBR2].start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual('leader', self.nodes[PBBR2].get_state())
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self.wait_node_state(PBBR2, 'leader', 10)
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self.nodes[PBBR2].set_backbone_router(reg_delay=REREG_DELAY, mlr_timeout=MLR_TIMEOUT)
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self.nodes[PBBR2].enable_backbone_router()
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self.nodes[PBBR2].set_domain_prefix(config.DOMAIN_PREFIX, 'prosD')
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self.simulator.go(5)
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self.assertTrue(self.nodes[PBBR2].is_primary_backbone_router)
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self.assertIsNotNone(self.nodes[PBBR2].get_ip6_address(config.ADDRESS_TYPE.DUA))
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# Bring up ROUTER2
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self.nodes[ROUTER2].start()
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self.simulator.go(5)
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self.assertEqual('router', self.nodes[ROUTER2].get_state())
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self.assertIsNotNone(self.nodes[ROUTER2].get_ip6_address(config.ADDRESS_TYPE.DUA))
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def test(self):
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self._bootstrap()
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self.collect_ipaddrs()
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self.collect_rloc16s()
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self.simulator.go(WAIT_REDUNDANCE)
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# Step 1: Host pings PBBR's DUA
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self.assertTrue(self.nodes[HOST].ping(self.nodes[PBBR].get_ip6_address(config.ADDRESS_TYPE.DUA),
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backbone=True))
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self.simulator.go(WAIT_REDUNDANCE)
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# Step 2: Host pings SBBR's DUA
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self.assertTrue(self.nodes[HOST].ping(self.nodes[SBBR].get_ip6_address(config.ADDRESS_TYPE.DUA),
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backbone=True))
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self.simulator.go(WAIT_REDUNDANCE)
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# Step 3: Host pings ROUTER1's DUA
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self.assertTrue(self.nodes[HOST].ping(self.nodes[ROUTER1].get_ip6_address(config.ADDRESS_TYPE.DUA),
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backbone=True))
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self.simulator.go(WAIT_REDUNDANCE)
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# Step 4: ROUTER2 pings ROUTER1 which should succeed
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ROUTER1_DUA = self.nodes[ROUTER1].get_ip6_address(config.ADDRESS_TYPE.DUA)
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self.assertTrue(self.nodes[ROUTER2].ping(ROUTER1_DUA))
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self.simulator.go(WAIT_REDUNDANCE)
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def _get_mliid(self, nodeid: int) -> str:
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mleid = self.nodes[nodeid].get_ip6_address(config.ADDRESS_TYPE.ML_EID)
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mliid = ipaddress.IPv6Address(mleid).packed[-8:]
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return ''.join(['%02x' % b for b in mliid])
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def verify(self, pv: PacketVerifier):
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pkts = pv.pkts
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pv.add_common_vars()
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pv.summary.show()
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PBBR = pv.vars['PBBR']
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PBBR2 = pv.vars['PBBR2']
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ROUTER1 = pv.vars['ROUTER1']
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ROUTER2 = pv.vars['ROUTER2']
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SBBR = pv.vars['SBBR']
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PBBR_DUA = pv.vars['PBBR_DUA']
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SBBR_DUA = pv.vars['SBBR_DUA']
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ROUTER1_DUA = pv.vars['ROUTER1_DUA']
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ROUTER2_DUA = pv.vars['ROUTER2_DUA']
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HOST_BGUA = pv.vars['HOST_BGUA']
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PBBR_ETH = pv.vars['PBBR_ETH']
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PBBR2_ETH = pv.vars['PBBR2_ETH']
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# Verify that SBBR should not foward any Ping Request to the Thread network.
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# Use `ipv6.hlim == 63` to avoid false fails because SBBR might still forward Ping Request from PBBR to ROUTER1
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pkts.filter_wpan_src64(SBBR).filter_ping_request().filter('ipv6.hlim == 63').must_not_next()
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# Step 1: Host pings PBBR's DUA
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# PBBR should not forward the Ping Request to Thread network
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ping1_pkts = pkts.filter_ipv6_src_dst(HOST_BGUA, PBBR_DUA).filter_ping_request()
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ping1_pkts.filter_eth().must_next()
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ping1_pkts.filter_wpan().must_not_next()
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# Step 2: Host pings SBBR's DUA
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# PBBR should forward the Ping Request to Thread network according to DUA routes
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ping2_pkts = pkts.filter_ipv6_src_dst(HOST_BGUA, SBBR_DUA).filter_ping_request()
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ping2_pkts.filter_eth().must_next()
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ping2_pkts.filter_wpan().must_next()
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# Step 3: Host pings ROUTER1's DUA
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# PBBR should forward the Ping Request to Thread network according to DUA routes
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ping3_pkts = pkts.filter_ipv6_src_dst(HOST_BGUA, ROUTER1_DUA).filter_ping_request()
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ping3_pkts.filter_eth().must_next()
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ping3_pkts.filter_wpan().must_next()
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# Step 4: ROUTER2 pings ROUTER1
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# Verify Ping Request: ROUTER2 -> PBBR2 -> PBBR -> ROUTER1
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ping4_request_pkts = pkts.filter_ipv6_src_dst(ROUTER2_DUA, ROUTER1_DUA)
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ping4_id = ping4_request_pkts.filter_wpan_src64(
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ROUTER2).filter_ping_request().must_next().icmpv6.echo.identifier
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ping4_request_pkts.filter_eth_src(PBBR2_ETH).filter_ping_request(identifier=ping4_id).must_next()
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ping4_request_pkts.filter_wpan_src64(PBBR).filter_ping_request(identifier=ping4_id).must_next()
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# Verify Ping Reply: ROUTER1 -> PBBR -> PBBR2 -> ROUTER2
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ping4_reply_pkts = pkts.filter_ipv6_src_dst(ROUTER1_DUA, ROUTER2_DUA).filter_ping_reply(identifier=ping4_id)
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ping4_reply_pkts.filter_eth_src(PBBR_ETH).must_next()
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if __name__ == '__main__':
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unittest.main()
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