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#!/usr/bin/env python3
#
# Copyright (c) 2016, The OpenThread Authors.
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import unittest
import config
import mle
import thread_cert
from pktverify.consts import MLE_ADVERTISEMENT, MLE_PARENT_REQUEST, MLE_PARENT_RESPONSE, MLE_CHILD_ID_REQUEST, SOURCE_ADDRESS_TLV, MODE_TLV, TIMEOUT_TLV, CHALLENGE_TLV, RESPONSE_TLV, LINK_LAYER_FRAME_COUNTER_TLV, ADDRESS16_TLV, LEADER_DATA_TLV, NETWORK_DATA_TLV, TLV_REQUEST_TLV, SCAN_MASK_TLV, CONNECTIVITY_TLV, LINK_MARGIN_TLV, VERSION_TLV, ADDRESS_REGISTRATION_TLV
from pktverify.packet_verifier import PacketVerifier
from pktverify.null_field import nullField
LEADER = 1
ROUTER1 = 2
REED1 = 3
REED2 = 4
ROUTER2 = 5
# Test Purpose and Description:
# -----------------------------
# The purpose of this test case is to verify that the DUT will
# pick REED_1 as its parent because of its better connectivity
#
# Test Topology:
# -------------
# Leader--Router1
# / \ /
# REED2 REED1
# \ /
# Router2[DUT]
#
# DUT Types:
# ----------
# Router
class Cert_5_1_09_REEDAttachConnectivity(thread_cert.TestCase):
USE_MESSAGE_FACTORY = False
TOPOLOGY = {
LEADER: {
'name': 'LEADER',
'mode': 'rdn',
'allowlist': [ROUTER1, REED1, REED2]
},
ROUTER1: {
'name': 'ROUTER_1',
'mode': 'rdn',
'allowlist': [LEADER, REED1]
},
REED1: {
'name': 'REED_1',
'mode': 'rdn',
'router_upgrade_threshold': 0,
'allowlist': [LEADER, ROUTER1, ROUTER2]
},
REED2: {
'name': 'REED_2',
'mode': 'rdn',
'router_upgrade_threshold': 0,
'allowlist': [LEADER, ROUTER2]
},
ROUTER2: {
'name': 'ROUTER_2',
'mode': 'rdn',
'allowlist': [REED1, REED2]
},
}
def test(self):
self.nodes[LEADER].start()
self.simulator.go(5)
self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
for i in range(2, 5):
self.nodes[i].start()
self.simulator.go(5)
self.assertEqual(self.nodes[ROUTER1].get_state(), 'router')
self.assertEqual(self.nodes[REED1].get_state(), 'child')
self.assertEqual(self.nodes[REED2].get_state(), 'child')
self.simulator.go(config.MAX_ADVERTISEMENT_INTERVAL)
self.nodes[ROUTER2].start()
self.simulator.go(10)
self.assertEqual(self.nodes[ROUTER2].get_state(), 'router')
self.assertEqual(self.nodes[REED1].get_state(), 'router')
def verify(self, pv):
pkts = pv.pkts
pv.summary.show()
LEADER = pv.vars['LEADER']
REED_1 = pv.vars['REED_1']
ROUTER_1 = pv.vars['ROUTER_1']
ROUTER_2 = pv.vars['ROUTER_2']
# Step 1: Verify ROUTER_1 and Leader are sending MLE advertisements.
pkts.filter_wpan_src64(LEADER).\
filter_mle_cmd(MLE_ADVERTISEMENT).\
must_next()
pv.verify_attached('ROUTER_1')
# Step 3: The DUT sends a MLE Parent Request with an IP hop limit of
# 255 to the Link-Local All Routers multicast address (FF02::2).
# The following TLVs MUST be present in the MLE Parent Request:
# - Challenge TLV
# - Mode TLV
# - Scan Mask TLV
# If the DUT sends multiple MLE Parent Requests
# - The first one MUST be sent only to all Routers
# - Subsequent ones MAY be sent to all Routers and REEDS
# - Version TLV
# If the first MLE Parent Request was sent to all Routers and
# REEDS, the test fails.
pkts.filter_wpan_src64(ROUTER_2).\
filter_LLARMA().\
filter_mle_cmd(MLE_PARENT_REQUEST).\
filter(lambda p: {
CHALLENGE_TLV,
MODE_TLV,
SCAN_MASK_TLV,
VERSION_TLV
} <= set(p.mle.tlv.type) and\
p.ipv6.hlim == 255 and\
p.mle.tlv.scan_mask.r == 1 and\
p.mle.tlv.scan_mask.e == 0
).\
must_next()
lstart = pkts.index
# Step 5: The DUT MUST send a MLE Parent Request with an IP hop limit of
# 255 to the Link-Local All Routers multicast address (FF02::2).
# The following TLVs MUST be present in the MLE Parent Request:
# - Challenge TLV
# - Mode TLV
# - Scan Mask TLV
# - The Scan Mask TLV MUST be sent to Routers And REEDs
# - Version TLV
#
# In securing the first three messages of the attaching process,
# the full four-byte key sequence number MUST be included in
# the Auxiliary Security Header used for MLE security.
#
# To send the full four-byte key sequence number, the Key
# Identifier Mode of the Security Control Field SHALL be set to
# ‘0x02’, indicating the presence of a four-byte Key Source,
# which SHALL contain the four-byte key sequence number in
# network byte order.
pkts.filter_wpan_src64(ROUTER_2).\
filter_LLARMA().\
filter_mle_cmd(MLE_PARENT_REQUEST).\
filter(lambda p: {
CHALLENGE_TLV,
MODE_TLV,
SCAN_MASK_TLV,
VERSION_TLV
} <= set(p.mle.tlv.type) and\
p.ipv6.hlim == 255 and\
p.mle.tlv.scan_mask.r == 1 and\
p.mle.tlv.scan_mask.e == 1 and\
p.wpan.aux_sec.key_id_mode == 0x2
).\
must_next()
lend = pkts.index
# Step 4: REED_1 and REED_2 no response to Parent Request meant for all routers.
for i in (1, 2):
pkts.range(lstart, lend).\
filter_wpan_src64(pv.vars['REED_%d' % i]).\
filter_wpan_dst64(ROUTER_2).\
filter_mle_cmd(MLE_PARENT_RESPONSE).\
must_not_next()
# Step 6: REED_1 and REED_2 respond with a MLE Parent Response.
# The following TLVs MUST be present in the MLE Parent Response:
# - Challenge TLV
# - Connectivity TLV
# - Leader Data TLV
# - Link-layer Frame Counter TLV
# - Link Margin TLV
# - Response TLV
# - Source Address
# - Version TLV
# - MLE Frame Counter TLV (optional)
for i in (1, 2):
with pkts.save_index():
pkts.filter_wpan_src64(pv.vars['REED_%d' % i]).\
filter_wpan_dst64(ROUTER_2).\
filter_mle_cmd(MLE_PARENT_RESPONSE).\
filter(lambda p: {
CHALLENGE_TLV,
CONNECTIVITY_TLV,
LEADER_DATA_TLV,
LINK_LAYER_FRAME_COUNTER_TLV,
LINK_MARGIN_TLV,
RESPONSE_TLV,
SOURCE_ADDRESS_TLV,
VERSION_TLV
} <= set(p.mle.tlv.type) and\
p.wpan.aux_sec.key_id_mode == 0x2
).\
must_next()
# Step 7: DUT sends a MLE Child ID Request to REED_1.
# The following TLVs MUST be present in the MLE Child ID Request:
# - Link-layer Frame Counter TLV
# - Mode TLV
# - Response TLV
# - Timeout TLV
# - TLV Request TLV
# - Address16 TLV
# - Network Data TLV
# - Route64 TLV (optional)
# - Version TLV
# - MLE Frame Counter TLV (optional)
# The following TLV MUST NOT be present in the MLE Child ID Request:
# - Address Registration TLV
_pkt = pkts.filter_wpan_src64(ROUTER_2).\
filter_wpan_dst64(REED_1).\
filter_mle_cmd(MLE_CHILD_ID_REQUEST).\
filter(lambda p: {
LINK_LAYER_FRAME_COUNTER_TLV,
MODE_TLV,
RESPONSE_TLV,
TIMEOUT_TLV,
TLV_REQUEST_TLV,
ADDRESS16_TLV,
NETWORK_DATA_TLV,
VERSION_TLV
} <= set(p.mle.tlv.type) and\
p.mle.tlv.addr16 is nullField and\
p.thread_nwd.tlv.type is nullField and\
p.wpan.aux_sec.key_id_mode == 0x2
).\
must_next()
_pkt.must_not_verify(lambda p: (ADDRESS_REGISTRATION_TLV) in p.mle.tlv.type)
if __name__ == '__main__':
unittest.main()