| #!/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. |
| # |
| import unittest |
| |
| import thread_cert |
| |
| # Test description: |
| # This test verifies that a single NAT64 prefix is advertised when there are |
| # multiple Border Routers in the same Thread and infrastructure network. |
| # |
| # TODO: add checks for outbound connectivity from Thread device to IPv4 host |
| # after OTBR change is ready. |
| # |
| # Topology: |
| # ----------------(eth)-------------------------- |
| # | | | |
| # BR1 (Leader) ---- BR2 HOST |
| # | |
| # ROUTER |
| # |
| |
| BR1 = 1 |
| ROUTER = 2 |
| BR2 = 3 |
| HOST = 4 |
| |
| |
| class Nat64MultiBorderRouter(thread_cert.TestCase): |
| USE_MESSAGE_FACTORY = False |
| |
| TOPOLOGY = { |
| BR1: { |
| 'name': 'BR1', |
| 'allowlist': [ROUTER, BR2], |
| 'is_otbr': True, |
| 'version': '1.2', |
| }, |
| ROUTER: { |
| 'name': 'Router', |
| 'allowlist': [BR1], |
| 'version': '1.2', |
| }, |
| BR2: { |
| 'name': 'BR2', |
| 'allowlist': [BR1], |
| 'is_otbr': True, |
| 'version': '1.2' |
| }, |
| HOST: { |
| 'name': 'Host', |
| 'is_host': True |
| }, |
| } |
| |
| def test(self): |
| br1 = self.nodes[BR1] |
| router = self.nodes[ROUTER] |
| br2 = self.nodes[BR2] |
| host = self.nodes[HOST] |
| |
| host.start(start_radvd=False) |
| self.simulator.go(5) |
| |
| br1.start() |
| self.simulator.go(5) |
| self.assertEqual('leader', br1.get_state()) |
| |
| router.start() |
| self.simulator.go(5) |
| self.assertEqual('router', router.get_state()) |
| |
| # |
| # Case 1. BR2 joins the network later and it will not add |
| # its local nat64 prefix to Network Data. |
| # |
| br2.start() |
| self.simulator.go(5) |
| self.assertEqual('router', br2.get_state()) |
| |
| # Only 1 NAT64 prefix in Network Data. |
| self.assertEqual(len(br1.get_netdata_nat64_prefix()), 1) |
| self.assertEqual(len(br2.get_netdata_nat64_prefix()), 1) |
| self.assertEqual(br1.get_netdata_nat64_prefix()[0], br2.get_netdata_nat64_prefix()[0]) |
| nat64_prefix = br1.get_netdata_nat64_prefix()[0] |
| |
| # The NAT64 prefix in Network Data is same as BR1's local NAT64 prefix. |
| br1_nat64_prefix = br1.get_br_nat64_prefix() |
| br2_nat64_prefix = br2.get_br_nat64_prefix() |
| self.assertEqual(nat64_prefix, br1_nat64_prefix) |
| self.assertNotEqual(nat64_prefix, br2_nat64_prefix) |
| |
| # |
| # Case 2. Disable and re-enable border routing on BR1. |
| # |
| br1.disable_br() |
| self.simulator.go(5) |
| |
| # BR1 withdraws its prefix and BR2 advertises its prefix. |
| self.assertEqual(len(br1.get_netdata_nat64_prefix()), 1) |
| self.assertEqual(br2_nat64_prefix, br1.get_netdata_nat64_prefix()[0]) |
| self.assertNotEqual(br1_nat64_prefix, br1.get_netdata_nat64_prefix()[0]) |
| |
| br1.enable_br() |
| self.simulator.go(5) |
| |
| # NAT64 prefix in Network Data is still advertised by BR2. |
| self.assertEqual(len(br1.get_netdata_nat64_prefix()), 1) |
| self.assertEqual(br2_nat64_prefix, br1.get_netdata_nat64_prefix()[0]) |
| self.assertNotEqual(br1_nat64_prefix, br1.get_netdata_nat64_prefix()[0]) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |