[tests] add ipv6 source selection test (#4380)

2026-09-12 20:20:04 +00:00 · 2019-12-06 08:51:23 -08:00
parent bf4dae0c18
commit 76f847babc
4 changed files with 186 additions and 2 deletions
@@ -0,0 +1,145 @@
+#!/usr/bin/env python3
+#
+#  Copyright (c) 2019, 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 config
+import ipv6
+import node
+
+LEADER = 1
+ROUTER = 2
+
+
+class TestIPv6SourceSelection(unittest.TestCase):
+
+    def setUp(self):
+        self.simulator = config.create_default_simulator()
+
+        self.nodes = {}
+        for i in range(1, 3):
+            self.nodes[i] = node.Node(i, simulator=self.simulator)
+
+        self.nodes[LEADER].set_panid(0xcafe)
+        self.nodes[LEADER].set_mode('rsdn')
+        self.nodes[LEADER].add_whitelist(self.nodes[ROUTER].get_addr64())
+        self.nodes[LEADER].enable_whitelist()
+
+        self.nodes[ROUTER].set_panid(0xcafe)
+        self.nodes[ROUTER].set_mode('rsdn')
+        self.nodes[ROUTER].add_whitelist(self.nodes[LEADER].get_addr64())
+        self.nodes[ROUTER].enable_whitelist()
+        self.nodes[ROUTER].set_router_selection_jitter(1)
+
+    def tearDown(self):
+        for n in list(self.nodes.values()):
+            n.stop()
+            n.destroy()
+        self.simulator.stop()
+
+    def test(self):
+        self.nodes[LEADER].start()
+        self.simulator.go(5)
+        self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
+
+        self.nodes[ROUTER].start()
+        self.simulator.go(5)
+        self.assertEqual(self.nodes[ROUTER].get_state(), 'router')
+
+        leader_aloc = self.nodes[LEADER].get_addr_leader_aloc()
+        leader_mleid = self.nodes[LEADER].get_mleid()
+        leader_rloc = self.nodes[LEADER].get_rloc()
+        leader_linklocal = self.nodes[LEADER].get_linklocal()
+        multicast_addr = 'ff03::1'
+        external_addr = '2007::1'
+
+        router_rloc = self.nodes[ROUTER].get_rloc()
+        router_linklocal = self.nodes[ROUTER].get_linklocal()
+        router_mleid = self.nodes[ROUTER].get_mleid()
+
+        # Source check - RLOC source for RLOC destination
+        self.assertTrue(self.nodes[ROUTER].ping(leader_rloc))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_rloc)
+
+        # Source check - ML-EID source for ALOC destination
+        self.assertTrue(self.nodes[ROUTER].ping(leader_aloc))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_mleid)
+
+        # Source check - ML-EID source for ML-EID destination
+        self.assertTrue(self.nodes[ROUTER].ping(leader_mleid))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_mleid)
+
+        # Source check - link local source source for link local address
+        self.assertTrue(self.nodes[ROUTER].ping(leader_linklocal))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_linklocal)
+
+        # Source check - ML-EID source for realmlocal multicast destination
+        self.assertTrue(self.nodes[ROUTER].ping(multicast_addr))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_mleid)
+
+        # GUA and default gateway
+        self.nodes[LEADER].add_prefix('2001::/64', 'paros')
+        self.nodes[LEADER].register_netdata()
+        self.simulator.go(5)
+
+        # Set lowpan context of sniffer
+        self.simulator.set_lowpan_context(1, '2001::/64')
+
+        # Flushes message queue before next ping
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+
+        # Source check - GUA source for GUA destination
+        leader_gua = self.nodes[LEADER].get_addr("2001::/64")
+        router_gua = self.nodes[ROUTER].get_addr("2001::/64")
+        self.assertTrue(leader_gua is not None)
+        self.assertTrue(router_gua is not None)
+        self.assertTrue(self.nodes[ROUTER].ping(leader_gua))
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_gua)
+
+        # Source check - GUA source for external address (default route)
+        self.nodes[ROUTER].ping(external_addr)
+        router_msgs = self.simulator.get_messages_sent_by(ROUTER)
+        msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
+        msg.assertSentFromSourceAddress(router_gua)
+
+
+if __name__ == '__main__':
+    unittest.main()