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hostapd/tests/hwsim/test_wpas_wmm_ac.py
Masashi Honma 15dfcb69df tests: Use 'b' prefix to mark Bytes literals explicitly for python3 
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Jouni Malinen <j@w1.fi>
2019-02-04 12:26:33 +02:00

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# Test cases for wpa_supplicant WMM-AC operations
# Copyright (c) 2014, Intel Corporation
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
from remotehost import remote_compatible
import logging
logger = logging.getLogger()
import struct
import hwsim_utils
import hostapd
from utils import fail_test
def add_wmm_ap(apdev, acm_list):
params = { "ssid": "wmm_ac",
"hw_mode": "g",
"channel": "11",
"wmm_enabled" : "1"}
for ac in acm_list:
params["wmm_ac_%s_acm" % (ac.lower())] = "1"
return hostapd.add_ap(apdev, params)
def test_tspec(dev, apdev):
"""Basic addts/delts tests"""
# configure ap with VO and VI requiring admission-control
hapd = add_wmm_ap(apdev[0], ["VO", "VI"])
dev[0].connect("wmm_ac", key_mgmt="NONE", scan_freq="2462")
hwsim_utils.test_connectivity(dev[0], hapd)
status = dev[0].request("WMM_AC_STATUS")
if "WMM AC is Enabled" not in status:
raise Exception("WMM-AC not enabled")
if "TSID" in status:
raise Exception("Unexpected TSID info")
if "BK: acm=0 uapsd=0" not in status:
raise Exception("Unexpected BK info" + status)
if "BE: acm=0 uapsd=0" not in status:
raise Exception("Unexpected BE info" + status)
if "VI: acm=1 uapsd=0" not in status:
raise Exception("Unexpected VI info" + status)
if "VO: acm=1 uapsd=0" not in status:
raise Exception("Unexpected VO info" + status)
# no tsid --> tsid out of range
if "FAIL" not in dev[0].request("WMM_AC_ADDTS downlink"):
raise Exception("Invalid WMM_AC_ADDTS accepted")
# no direction
if "FAIL" not in dev[0].request("WMM_AC_ADDTS tsid=5"):
raise Exception("Invalid WMM_AC_ADDTS accepted")
# param out of range
if "FAIL" not in dev[0].request("WMM_AC_ADDTS tsid=5 downlink"):
raise Exception("Invalid WMM_AC_ADDTS accepted")
tsid = 5
# make sure we fail when the ac is not configured for acm
try:
dev[0].add_ts(tsid, 3)
raise Exception("ADDTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("ADDTS failed"):
raise
status = dev[0].request("WMM_AC_STATUS")
if "TSID" in status:
raise Exception("Unexpected TSID info")
# add tspec for UP=6
dev[0].add_ts(tsid, 6)
status = dev[0].request("WMM_AC_STATUS")
if "TSID" not in status:
raise Exception("Missing TSID info")
# using the same tsid for a different ac is invalid
try:
dev[0].add_ts(tsid, 5)
raise Exception("ADDTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("ADDTS failed"):
raise
# update the tspec for a different UP of the same ac
dev[0].add_ts(tsid, 7, extra="fixed_nominal_msdu")
dev[0].del_ts(tsid)
status = dev[0].request("WMM_AC_STATUS")
if "TSID" in status:
raise Exception("Unexpected TSID info")
# verify failure on uplink/bidi without driver support
tsid = 6
try:
dev[0].add_ts(tsid, 7, direction="uplink")
raise Exception("ADDTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("ADDTS failed"):
raise
try:
dev[0].add_ts(tsid, 7, direction="bidi")
raise Exception("ADDTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("ADDTS failed"):
raise
# attempt to delete non-existing tsid
try:
dev[0].del_ts(tsid)
raise Exception("DELTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("DELTS failed"):
raise
# "CTRL: Invalid WMM_AC_ADDTS parameter: 'foo'
if "FAIL" not in dev[0].request("WMM_AC_ADDTS foo"):
raise Exception("Invalid WMM_AC_ADDTS command accepted")
def test_tspec_protocol(dev, apdev):
"""Protocol tests for addts/delts"""
# configure ap with VO and VI requiring admission-control
hapd = add_wmm_ap(apdev[0], ["VO", "VI"])
dev[0].connect("wmm_ac", key_mgmt="NONE", scan_freq="2462")
dev[0].dump_monitor()
hapd.set("ext_mgmt_frame_handling", "1")
tsid = 6
# timeout on ADDTS response
dev[0].add_ts(tsid, 7, expect_failure=True)
hapd.dump_monitor()
req = "WMM_AC_ADDTS downlink tsid=6 up=7 nominal_msdu_size=1500 sba=9000 mean_data_rate=1500 min_phy_rate=6000000"
if "OK" not in dev[0].request(req):
raise Exception("WMM_AC_ADDTS failed")
# a new request while previous is still pending
if "FAIL" not in dev[0].request(req):
raise Exception("WMM_AC_ADDTS accepted while oen was still pending")
msg = hapd.mgmt_rx()
payload = msg['payload']
(categ, action, dialog, status) = struct.unpack('BBBB', payload[0:4])
if action != 0:
raise Exception("Unexpected Action code: %d" % action)
msg['da'] = msg['sa']
msg['sa'] = apdev[0]['bssid']
# unexpected dialog token
msg['payload'] = struct.pack('BBBB', 17, 1, (dialog + 1) & 0xff, 0) + payload[4:]
hapd.mgmt_tx(msg)
# valid response
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 0) + payload[4:]
hapd.mgmt_tx(msg)
ev = dev[0].wait_event(["TSPEC-ADDED"], timeout=10)
if ev is None:
raise Exception("Timeout on TSPEC-ADDED")
if "tsid=%d" % tsid not in ev:
raise Exception("Unexpected TSPEC-ADDED contents: " + ev)
# duplicated response
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 0) + payload[4:]
hapd.mgmt_tx(msg)
# too short ADDTS
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 0)
hapd.mgmt_tx(msg)
# invalid IE
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 0) + payload[4:] + struct.pack('BB', 0xdd, 100)
hapd.mgmt_tx(msg)
# too short WMM element
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 0) + payload[4:] + b'\xdd\x06\x00\x50\xf2\x02\x02\x01'
hapd.mgmt_tx(msg)
# DELTS
dev[0].dump_monitor()
msg['payload'] = struct.pack('BBBB', 17, 2, 0, 0) + payload[4:]
hapd.mgmt_tx(msg)
ev = dev[0].wait_event(['TSPEC-REMOVED'], timeout=6)
if ev is None:
raise Exception("Timeout on TSPEC-REMOVED event")
if "tsid=%d" % tsid not in ev:
raise Exception("Unexpected TSPEC-REMOVED contents: " + ev)
# DELTS duplicated
msg['payload'] = struct.pack('BBBB', 17, 2, 0, 0) + payload[4:]
hapd.mgmt_tx(msg)
# start a new request
hapd.dump_monitor()
if "OK" not in dev[0].request(req):
raise Exception("WMM_AC_ADDTS failed")
msg = hapd.mgmt_rx()
payload = msg['payload']
(categ, action, dialog, status) = struct.unpack('BBBB', payload[0:4])
if action != 0:
raise Exception("Unexpected Action code: %d" % action)
msg['da'] = msg['sa']
msg['sa'] = apdev[0]['bssid']
# modified parameters
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 1) + payload[4:12] + struct.pack('B', ord(payload[12]) & ~0x60) + payload[13:]
hapd.mgmt_tx(msg)
# reject request
msg['payload'] = struct.pack('BBBB', 17, 1, dialog, 1) + payload[4:]
hapd.mgmt_tx(msg)
ev = dev[0].wait_event(["TSPEC-REQ-FAILED"], timeout=10)
if ev is None:
raise Exception("Timeout on TSPEC-REQ-FAILED")
if "tsid=%d" % tsid not in ev:
raise Exception("Unexpected TSPEC-REQ-FAILED contents: " + ev)
hapd.set("ext_mgmt_frame_handling", "0")
@remote_compatible
def test_tspec_not_enabled(dev, apdev):
"""addts failing if AP does not support WMM"""
params = { "ssid": "wmm_no_ac",
"hw_mode": "g",
"channel": "11",
"wmm_enabled" : "0" }
hapd = hostapd.add_ap(apdev[0], params)
dev[0].connect("wmm_no_ac", key_mgmt="NONE", scan_freq="2462")
status = dev[0].request("WMM_AC_STATUS")
if "Not associated to a WMM AP, WMM AC is Disabled" not in status:
raise Exception("Unexpected WMM_AC_STATUS: " + status)
try:
dev[0].add_ts(5, 6)
raise Exception("ADDTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("ADDTS failed"):
raise
# attempt to delete non-existing tsid
try:
dev[0].del_ts(5)
raise Exception("DELTS succeeded although it should have failed")
except Exception as e:
if not str(e).startswith("DELTS failed"):
raise
# unexpected Action frame when WMM is disabled
MGMT_SUBTYPE_ACTION = 13
msg = {}
msg['fc'] = MGMT_SUBTYPE_ACTION << 4
msg['da'] = dev[0].p2p_interface_addr()
msg['sa'] = apdev[0]['bssid']
msg['bssid'] = apdev[0]['bssid']
msg['payload'] = struct.pack('BBBB', 17, 2, 0, 0)
hapd.mgmt_tx(msg)
@remote_compatible
def test_tspec_ap_roam_open(dev, apdev):
"""Roam between two open APs while having tspecs"""
hapd0 = add_wmm_ap(apdev[0], ["VO", "VI"])
dev[0].connect("wmm_ac", key_mgmt="NONE")
hwsim_utils.test_connectivity(dev[0], hapd0)
dev[0].add_ts(5, 6)
hapd1 = add_wmm_ap(apdev[1], ["VO", "VI"])
dev[0].scan_for_bss(apdev[1]['bssid'], freq=2462)
dev[0].roam(apdev[1]['bssid'])
hwsim_utils.test_connectivity(dev[0], hapd1)
if dev[0].tspecs():
raise Exception("TSPECs weren't deleted on roaming")
dev[0].scan_for_bss(apdev[0]['bssid'], freq=2462)
dev[0].roam(apdev[0]['bssid'])
hwsim_utils.test_connectivity(dev[0], hapd0)
@remote_compatible
def test_tspec_reassoc(dev, apdev):
"""Reassociation to same BSS while having tspecs"""
hapd0 = add_wmm_ap(apdev[0], ["VO", "VI"])
dev[0].connect("wmm_ac", key_mgmt="NONE")
hwsim_utils.test_connectivity(dev[0], hapd0)
dev[0].add_ts(5, 6)
last_tspecs = dev[0].tspecs()
dev[0].request("REASSOCIATE")
dev[0].wait_connected()
hwsim_utils.test_connectivity(dev[0], hapd0)
if dev[0].tspecs() != last_tspecs:
raise Exception("TSPECs weren't saved on reassociation")
def test_wmm_element(dev, apdev):
"""hostapd FTM range request timeout"""
try:
run_wmm_element(dev, apdev)
finally:
dev[0].request("VENDOR_ELEM_REMOVE 13 *")
def run_wmm_element(dev, apdev):
params = { "ssid": "wmm" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
bssid = hapd.own_addr()
# Too short WMM IE
dev[0].request("VENDOR_ELEM_ADD 13 dd060050f2020001")
dev[0].scan_for_bss(bssid, freq=2412)
dev[0].connect("wmm", key_mgmt="NONE", scan_freq="2412", wait_connect=False)
ev = dev[0].wait_event(["CTRL-EVENT-ASSOC-REJECT"], timeout=10)
if ev is None:
raise Exception("Association not rejected")
dev[0].request("REMOVE_NETWORK all")
# Unsupported WMM IE Subtype/Version
dev[0].request("VENDOR_ELEM_ADD 13 dd070050f202000000")
dev[0].connect("wmm", key_mgmt="NONE", scan_freq="2412", wait_connect=False)
ev = dev[0].wait_event(["CTRL-EVENT-ASSOC-REJECT"], timeout=10)
if ev is None:
raise Exception("Association not rejected")
dev[0].request("REMOVE_NETWORK all")
# Unsupported WMM IE Subtype/Version
dev[0].request("VENDOR_ELEM_ADD 13 dd070050f202010100")
dev[0].connect("wmm", key_mgmt="NONE", scan_freq="2412", wait_connect=False)
ev = dev[0].wait_event(["CTRL-EVENT-ASSOC-REJECT"], timeout=10)
if ev is None:
raise Exception("Association not rejected")
dev[0].request("REMOVE_NETWORK all")
def test_tspec_ap_fail(dev, apdev):
"""AP failing to send tspec response"""
# configure ap with VO and VI requiring admission-control
hapd = add_wmm_ap(apdev[0], ["VO", "VI"])
dev[0].connect("wmm_ac", key_mgmt="NONE", scan_freq="2462")
tsid = 5
with fail_test(hapd, 1, "wmm_send_action"):
try:
# add tspec for UP=6
dev[0].add_ts(tsid, 6)
except:
pass
def test_tspec_ap_parsing(dev, apdev):
"""TSPEC AP parsing tests"""
# configure ap with VO and VI requiring admission-control
hapd = add_wmm_ap(apdev[0], ["VO", "VI"])
bssid = hapd.own_addr()
dev[0].connect("wmm_ac", key_mgmt="NONE", scan_freq="2462")
addr = dev[0].own_addr()
tests = [ "WMM_AC_ADDTS downlink tsid=5 up=6 nominal_msdu_size=1500 sba=9000 mean_data_rate=1500 min_phy_rate=600000",
"WMM_AC_ADDTS downlink tsid=5 up=6 nominal_msdu_size=1500 sba=8192 mean_data_rate=1500 min_phy_rate=6000000",
"WMM_AC_ADDTS downlink tsid=5 up=6 nominal_msdu_size=32767 sba=65535 mean_data_rate=1500 min_phy_rate=1000000",
"WMM_AC_ADDTS downlink tsid=5 up=6 nominal_msdu_size=10000 sba=65535 mean_data_rate=2147483647 min_phy_rate=1000000" ]
for t in tests:
if "OK" not in dev[0].request(t):
raise Exception("WMM_AC_ADDTS failed")
ev = dev[0].wait_event(["TSPEC-REQ-FAILED"], timeout=1)
if ev is None:
raise Exception("No response")
tests = []
# WMM: Invalid Nominal MSDU Size (0)
tests += [ "11000400dd3d0050f2020201aa300000000000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff0000" ]
# hostapd_wmm_action - missing or wrong length tspec
tests += [ "11000400dd3e0050f2020201aa300010270000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff000000" ]
# hostapd_wmm_action - could not parse wmm action
tests += [ "11000400dd3d0050f2020201aa300010270000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff00" ]
# valid form
tests += [ "11000400dd3d0050f2020201aa300010270000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff0000" ]
hdr = "d0003a01" + bssid.replace(':', '') + addr.replace(':', '') + bssid.replace(':', '') + "1000"
hapd.set("ext_mgmt_frame_handling", "1")
for t in tests:
if "OK" not in hapd.request("MGMT_RX_PROCESS freq=2412 datarate=0 ssi_signal=-30 frame=" + hdr + t):
raise Exception("MGMT_RX_PROCESS failed")
hapd.set("ext_mgmt_frame_handling", "0")
def test_wmm_disabled(dev, apdev):
"""WMM disabled and unexpected TSPEC"""
params = { "ssid": "no-wmm", "ieee80211n": "0", "wmm_enabled": "0" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
bssid = hapd.own_addr()
dev[0].connect("no-wmm", key_mgmt="NONE", scan_freq="2412")
addr = dev[0].own_addr()
# wmm action received is not from associated wmm station
hdr = "d0003a01" + bssid.replace(':', '') + addr.replace(':', '') + bssid.replace(':', '') + "1000"
hapd.set("ext_mgmt_frame_handling", "1")
if "OK" not in hapd.request("MGMT_RX_PROCESS freq=2412 datarate=0 ssi_signal=-30 frame=" + hdr + "11000400dd3d0050f2020201aa300010270000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff0000"):
raise Exception("MGMT_RX_PROCESS failed")
# IEEE 802.11: Ignored Action frame (category=17) from unassociated STA
hdr = "d0003a01" + bssid.replace(':', '') + "112233445566" + bssid.replace(':', '') + "1000"
if "OK" not in hapd.request("MGMT_RX_PROCESS freq=2412 datarate=0 ssi_signal=-30 frame=" + hdr + "11000400dd3d0050f2020201aa300010270000000000000000000000000000000000000000000000000000ffffff7f00000000000000000000000040420f00ffff0000"):
raise Exception("MGMT_RX_PROCESS failed")
hapd.set("ext_mgmt_frame_handling", "0")
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