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tests: Add a test of mesh RANN

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This is a test for a RANN functionality defined in IEEE Std 802.11-2016
14.10.12 Root announcement (RANN) mechanism.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
This commit is contained in:
Masashi Honma 2017-03-28 10:30:10 +09:00 committed by Jouni Malinen
parent 0b287a2af5
commit 2011e99841
1 changed files with 146 additions and 1 deletions
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147
tests/hwsim/test_wmediumd.py
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@ -4,9 +4,10 @@
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import tempfile, os, subprocess, errno, hwsim_utils
import tempfile, os, subprocess, errno, hwsim_utils, time
from utils import HwsimSkip
from wpasupplicant import WpaSupplicant
from tshark import run_tshark
from test_ap_open import _test_ap_open
from test_wpas_mesh import check_mesh_support, check_mesh_group_added
from test_wpas_mesh import check_mesh_peer_connected, add_open_mesh_network
@ -317,3 +318,147 @@ def _test_wmediumd_path_ttl(dev, ok):
dev[i].mesh_group_remove()
check_mesh_group_removed(dev[i])
dev[i].dump_monitor()
def test_wmediumd_path_rann(dev, apdev, params):
"""Mesh path with RANN"""
# 0 and 1 is connected
# 0 and 2 is connected
# 1 and 2 is not connected
# 2 is mesh root and RANN enabled
# 1 --- 0 --- 2
# | |
# +-----X-----+
# This tests if 1 and 2 can communicate each other via 0.
require_wmediumd_version(0, 3, 1)
fd, fn = tempfile.mkstemp()
try:
f = os.fdopen(fd, 'w')
f.write(CFG2 % (dev[0].own_addr(), dev[1].own_addr(),
dev[2].own_addr()))
f.close()
p = start_wmediumd(fn, params)
try:
_test_wmediumd_path_rann(dev, apdev)
finally:
stop_wmediumd(p, params)
finally:
os.unlink(fn)
capfile = os.path.join(params['logdir'], "hwsim0.pcapng")
# check Root STA address in root announcement element
filt = "wlan.fc.type_subtype == 0x000d && " + \
"wlan_mgt.fixed.mesh_action == 0x01 && " + \
"wlan_mgt.tag.number == 126"
out = run_tshark(capfile, filt, [ "wlan.rann.root_sta" ])
if out is None:
raise Exception("No captured data found\n")
if out.find(dev[2].own_addr()) == -1 or \
out.find(dev[0].own_addr()) > -1 or \
out.find(dev[1].own_addr()) > -1:
raise Exception("RANN should be sent by dev2 only:\n" + out)
# check RANN interval is in range
filt = "wlan.sa == 02:00:00:00:02:00 && " + \
"wlan.fc.type_subtype == 0x000d && " + \
"wlan_mgt.fixed.mesh_action == 0x01 && " + \
"wlan_mgt.tag.number == 126"
out = run_tshark(capfile, filt, [ "frame.time_relative" ])
if out is None:
raise Exception("No captured data found\n")
lines = out.splitlines()
prev = float(lines[len(lines) - 1])
for i in reversed(range(1, len(lines) - 1)):
now = float(lines[i])
if prev - now < 1.0 or 3.0 < prev - now:
raise Exception("RANN interval " + str(prev - now) +
"(sec) should be close to 2.0(sec)\n")
prev = now
# check no one uses broadcast path request
filt = "wlan.da == ff:ff:ff:ff:ff:ff && " + \
"wlan.fc.type_subtype == 0x000d && " + \
"wlan_mgt.fixed.mesh_action == 0x01 && " + \
"wlan_mgt.tag.number == 130"
out = run_tshark(capfile, filt, [ "wlan.sa", "wlan.da" ])
if out is None:
raise Exception("No captured data found\n")
if len(out) > 0:
raise Exception("invalid broadcast path requests\n" + out)
def _test_wmediumd_path_rann(dev, apdev):
for i in range(0, 3):
check_mesh_support(dev[i])
add_open_mesh_network(dev[i], freq="2462", basic_rates="60 120 240")
# Check for mesh joined
for i in range(0, 3):
check_mesh_group_added(dev[i])
state = dev[i].get_status_field("wpa_state")
if state != "COMPLETED":
raise Exception("Unexpected wpa_state on dev" + str(i) + ": " + state)
mode = dev[i].get_status_field("mode")
if mode != "mesh":
raise Exception("Unexpected mode: " + mode)
# set node 2 as RANN supported root
subprocess.check_call(["iw", "dev", dev[0].ifname, "set", "mesh_param",
"mesh_hwmp_rootmode=0"])
subprocess.check_call(["iw", "dev", dev[1].ifname, "set", "mesh_param",
"mesh_hwmp_rootmode=0"])
subprocess.check_call(["iw", "dev", dev[2].ifname, "set", "mesh_param",
"mesh_hwmp_rootmode=4"])
subprocess.check_call(["iw", "dev", dev[2].ifname, "set", "mesh_param",
"mesh_hwmp_rann_interval=2000"])
# Check for peer connected
check_mesh_peer_connected(dev[0])
check_mesh_peer_connected(dev[0])
check_mesh_peer_connected(dev[1])
check_mesh_peer_connected(dev[2])
# Wait for RANN frame
time.sleep(10)
# Test connectivity 1->2 and 2->1
hwsim_utils.test_connectivity(dev[1], dev[2])
# Check mpath table on 0
res, data = dev[0].cmd_execute(['iw', dev[0].ifname, 'mpath', 'dump'])
if res != 0:
raise Exception("iw command failed on dev0")
if data.find(dev[1].own_addr() + ' ' + dev[1].own_addr()) == -1 or \
data.find(dev[2].own_addr() + ' ' + dev[2].own_addr()) == -1:
raise Exception("mpath not found on dev0:\n" + data)
if data.find(dev[0].own_addr()) > -1:
raise Exception("invalid mpath found on dev0:\n" + data)
# Check mpath table on 1
res, data = dev[1].cmd_execute(['iw', dev[1].ifname, 'mpath', 'dump'])
if res != 0:
raise Exception("iw command failed on dev1")
if data.find(dev[0].own_addr() + ' ' + dev[0].own_addr()) == -1 or \
data.find(dev[2].own_addr() + ' ' + dev[0].own_addr()) == -1:
raise Exception("mpath not found on dev1:\n" + data)
if data.find(dev[2].own_addr() + ' ' + dev[2].own_addr()) > -1 or \
data.find(dev[1].own_addr()) > -1:
raise Exception("invalid mpath found on dev1:\n" + data)
# Check mpath table on 2
res, data = dev[2].cmd_execute(['iw', dev[2].ifname, 'mpath', 'dump'])
if res != 0:
raise Exception("iw command failed on dev2")
if data.find(dev[0].own_addr() + ' ' + dev[0].own_addr()) == -1 or \
data.find(dev[1].own_addr() + ' ' + dev[0].own_addr()) == -1:
raise Exception("mpath not found on dev2:\n" + data)
if data.find(dev[1].own_addr() + ' ' + dev[1].own_addr()) > -1 or \
data.find(dev[2].own_addr()) > -1:
raise Exception("invalid mpath found on dev2:\n" + data)
# remove mesh groups
for i in range(0, 3):
dev[i].mesh_group_remove()
check_mesh_group_removed(dev[i])
dev[i].dump_monitor()