hostap/tests/hwsim/test_multi_ap.py

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# Test cases for Multi-AP
# Copyright (c) 2018, The Linux Foundation
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import hostapd
from wpasupplicant import WpaSupplicant
from utils import *
def test_multi_ap_association(dev, apdev):
"""Multi-AP association in backhaul BSS"""
run_multi_ap_association(dev, apdev, 1)
dev[1].connect("multi-ap", psk="12345678", scan_freq="2412",
wait_connect=False)
ev = dev[1].wait_event(["CTRL-EVENT-DISCONNECTED",
"CTRL-EVENT-CONNECTED",
"CTRL-EVENT-ASSOC-REJECT"],
timeout=5)
dev[1].request("DISCONNECT")
if ev is None:
raise Exception("Connection result not reported")
if "CTRL-EVENT-ASSOC-REJECT" not in ev:
raise Exception("Association rejection not reported")
if "status_code=12" not in ev:
raise Exception("Unexpected association status code: " + ev)
def test_multi_ap_association_shared_bss(dev, apdev):
"""Multi-AP association in backhaul BSS (with fronthaul BSS enabled)"""
run_multi_ap_association(dev, apdev, 3)
dev[1].connect("multi-ap", psk="12345678", scan_freq="2412")
def run_multi_ap_association(dev, apdev, multi_ap, wait_connect=True):
params = hostapd.wpa2_params(ssid="multi-ap", passphrase="12345678")
if multi_ap:
params["multi_ap"] = str(multi_ap)
hapd = hostapd.add_ap(apdev[0], params)
dev[0].connect("multi-ap", psk="12345678", scan_freq="2412",
multi_ap_backhaul_sta="1", wait_connect=wait_connect)
def test_multi_ap_backhaul_roam_with_bridge(dev, apdev):
"""Multi-AP backhaul BSS reassociation to another BSS with bridge"""
br_ifname = 'sta-br0'
ifname = 'wlan5'
try:
run_multi_ap_backhaul_roam_with_bridge(dev, apdev)
finally:
subprocess.call(['ip', 'link', 'set', 'dev', br_ifname, 'down'])
subprocess.call(['brctl', 'delif', br_ifname, ifname])
subprocess.call(['brctl', 'delbr', br_ifname])
subprocess.call(['iw', ifname, 'set', '4addr', 'off'])
def run_multi_ap_backhaul_roam_with_bridge(dev, apdev):
br_ifname = 'sta-br0'
ifname = 'wlan5'
wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
subprocess.call(['brctl', 'addbr', br_ifname])
subprocess.call(['brctl', 'setfd', br_ifname, '0'])
subprocess.call(['ip', 'link', 'set', 'dev', br_ifname, 'up'])
subprocess.call(['iw', ifname, 'set', '4addr', 'on'])
subprocess.check_call(['brctl', 'addif', br_ifname, ifname])
wpas.interface_add(ifname, br_ifname=br_ifname)
wpas.flush_scan_cache()
params = hostapd.wpa2_params(ssid="multi-ap", passphrase="12345678")
params["multi_ap"] = "1"
hapd = hostapd.add_ap(apdev[0], params)
wpas.connect("multi-ap", psk="12345678", scan_freq="2412",
multi_ap_backhaul_sta="1")
hapd2 = hostapd.add_ap(apdev[1], params)
bssid2 = hapd2.own_addr()
wpas.scan_for_bss(bssid2, freq="2412", force_scan=True)
wpas.roam(bssid2)
def test_multi_ap_disabled_on_ap(dev, apdev):
"""Multi-AP association attempt when disabled on AP"""
run_multi_ap_association(dev, apdev, 0, wait_connect=False)
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED",
"CTRL-EVENT-CONNECTED"],
timeout=5)
dev[0].request("DISCONNECT")
if ev is None:
raise Exception("Connection result not reported")
if "CTRL-EVENT-DISCONNECTED" not in ev:
raise Exception("Unexpected connection result")
def test_multi_ap_fronthaul_on_ap(dev, apdev):
"""Multi-AP association attempt when only fronthaul BSS on AP"""
run_multi_ap_association(dev, apdev, 2, wait_connect=False)
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED",
"CTRL-EVENT-CONNECTED",
"CTRL-EVENT-ASSOC-REJECT"],
timeout=5)
dev[0].request("DISCONNECT")
if ev is None:
raise Exception("Connection result not reported")
if "CTRL-EVENT-DISCONNECTED" not in ev:
raise Exception("Unexpected connection result")
def run_multi_ap_wps(dev, apdev, params, params_backhaul=None, add_apdev=False,
run_csa=False, allow_csa_fail=False):
"""Helper for running Multi-AP WPS tests
dev[0] does multi_ap WPS, dev[1] does normal WPS. apdev[0] is the fronthaul
BSS. If there is a separate backhaul BSS, it must have been set up by the
caller. params are the normal SSID parameters, they will be extended with
the WPS parameters. multi_ap_bssid must be given if it is not equal to the
fronthaul BSSID."""
wpas_apdev = None
if params_backhaul:
hapd_backhaul = hostapd.add_ap(apdev[1], params_backhaul)
multi_ap_bssid = hapd_backhaul.own_addr()
else:
multi_ap_bssid = apdev[0]['bssid']
params.update({"wps_state": "2", "eap_server": "1"})
# WPS with multi-ap station dev[0]
hapd = hostapd.add_ap(apdev[0], params)
conf = hapd.request("GET_CONFIG").splitlines()
if "ssid=" + params['ssid'] not in conf:
raise Exception("GET_CONFIG did not show correct ssid entry")
if "multi_ap" in params and \
"multi_ap=" + params["multi_ap"] not in conf:
raise Exception("GET_CONFIG did not show correct multi_ap entry")
if "multi_ap_backhaul_ssid" in params and \
"multi_ap_backhaul_ssid=" + params["multi_ap_backhaul_ssid"].strip('"') not in conf:
raise Exception("GET_CONFIG did not show correct multi_ap_backhaul_ssid entry")
if "wpa" in params and "multi_ap_backhaul_wpa_passphrase" in params and \
"multi_ap_backhaul_wpa_passphrase=" + params["multi_ap_backhaul_wpa_passphrase"] not in conf:
raise Exception("GET_CONFIG did not show correct multi_ap_backhaul_wpa_passphrase entry")
if "multi_ap_backhaul_wpa_psk" in params and \
"multi_ap_backhaul_wpa_psk=" + params["multi_ap_backhaul_wpa_psk"] not in conf:
raise Exception("GET_CONFIG did not show correct multi_ap_backhaul_wpa_psk entry")
hapd.request("WPS_PBC")
if "PBC Status: Active" not in hapd.request("WPS_GET_STATUS"):
raise Exception("PBC status not shown correctly")
dev[0].request("WPS_PBC multi_ap=1")
dev[0].wait_connected(timeout=20)
status = dev[0].get_status()
if status['wpa_state'] != 'COMPLETED' or status['bssid'] != multi_ap_bssid:
raise Exception("Not fully connected")
if status['ssid'] != params['multi_ap_backhaul_ssid'].strip('"'):
raise Exception("Unexpected SSID %s != %s" % (status['ssid'], params["multi_ap_backhaul_ssid"]))
if status['pairwise_cipher'] != 'CCMP':
raise Exception("Unexpected encryption configuration %s" % status['pairwise_cipher'])
if status['key_mgmt'] != 'WPA2-PSK':
raise Exception("Unexpected key_mgmt")
status = hapd.request("WPS_GET_STATUS")
if "PBC Status: Disabled" not in status:
raise Exception("PBC status not shown correctly")
if "Last WPS result: Success" not in status:
raise Exception("Last WPS result not shown correctly")
if "Peer Address: " + dev[0].own_addr() not in status:
raise Exception("Peer address not shown correctly")
if len(dev[0].list_networks()) != 1:
raise Exception("Unexpected number of network blocks")
# WPS with non-Multi-AP station dev[1]
hapd.request("WPS_PBC")
if "PBC Status: Active" not in hapd.request("WPS_GET_STATUS"):
raise Exception("PBC status not shown correctly")
dev[1].request("WPS_PBC")
dev[1].wait_connected(timeout=20)
status = dev[1].get_status()
if status['wpa_state'] != 'COMPLETED' or status['bssid'] != apdev[0]['bssid']:
raise Exception("Not fully connected")
if status['ssid'] != params["ssid"]:
raise Exception("Unexpected SSID")
# Fronthaul may be something else than WPA2-PSK so don't test it.
status = hapd.request("WPS_GET_STATUS")
if "PBC Status: Disabled" not in status:
raise Exception("PBC status not shown correctly")
if "Last WPS result: Success" not in status:
raise Exception("Last WPS result not shown correctly")
if "Peer Address: " + dev[1].own_addr() not in status:
raise Exception("Peer address not shown correctly")
if len(dev[1].list_networks()) != 1:
raise Exception("Unexpected number of network blocks")
try:
# Add apdev to the same phy that dev[0]
if add_apdev:
wpas_apdev = {}
wpas_apdev['ifname'] = dev[0].ifname + "_ap"
status, buf = dev[0].cmd_execute(['iw', dev[0].ifname,
'interface', 'add',
wpas_apdev['ifname'],
'type', 'managed'])
if status != 0:
raise Exception("iw interface add failed")
wpas_hapd = hostapd.add_ap(wpas_apdev, params)
if run_csa:
if 'OK' not in hapd.request("CHAN_SWITCH 5 2462 ht"):
raise Exception("chan switch request failed")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=5)
if not ev:
raise Exception("chan switch failed")
# now check station
ev = dev[0].wait_event(["CTRL-EVENT-CHANNEL-SWITCH",
"CTRL-EVENT-DISCONNECTED"], timeout=5)
if not ev:
raise Exception("sta - no chanswitch event")
if "CTRL-EVENT-CHANNEL-SWITCH" not in ev and not allow_csa_fail:
raise Exception("Received disconnection event instead of channel switch event")
if add_apdev:
dev[0].cmd_execute(['iw', wpas_apdev['ifname'], 'del'])
except:
if wpas_apdev:
dev[0].cmd_execute(['iw', wpas_apdev['ifname'], 'del'])
raise
def test_multi_ap_wps_shared(dev, apdev):
"""WPS on shared fronthaul/backhaul AP"""
ssid = "multi-ap-wps"
passphrase = "12345678"
params = hostapd.wpa2_params(ssid=ssid, passphrase=passphrase)
params.update({"multi_ap": "3",
"multi_ap_backhaul_ssid": '"%s"' % ssid,
"multi_ap_backhaul_wpa_passphrase": passphrase})
run_multi_ap_wps(dev, apdev, params)
def test_multi_ap_wps_shared_csa(dev, apdev):
"""WPS on shared fronthaul/backhaul AP, run CSA"""
ssid = "multi-ap-wps-csa"
passphrase = "12345678"
params = hostapd.wpa2_params(ssid=ssid, passphrase=passphrase)
params.update({"multi_ap": "3",
"multi_ap_backhaul_ssid": '"%s"' % ssid,
"multi_ap_backhaul_wpa_passphrase": passphrase})
run_multi_ap_wps(dev, apdev, params, run_csa=True)
def test_multi_ap_wps_shared_apdev_csa(dev, apdev):
"""WPS on shared fronthaul/backhaul AP add apdev on same phy and run CSA"""
ssid = "multi-ap-wps-apdev-csa"
passphrase = "12345678"
params = hostapd.wpa2_params(ssid=ssid, passphrase=passphrase)
params.update({"multi_ap": "3",
"multi_ap_backhaul_ssid": '"%s"' % ssid,
"multi_ap_backhaul_wpa_passphrase": passphrase})
# This case is currently failing toc omplete CSA on the station interface.
# For the time being, ignore that to avoid always failing tests. Full
# validation can be enabled once the issue behind this is fixed.
run_multi_ap_wps(dev, apdev, params, add_apdev=True, run_csa=True,
allow_csa_fail=True)
def test_multi_ap_wps_shared_psk(dev, apdev):
"""WPS on shared fronthaul/backhaul AP using PSK"""
ssid = "multi-ap-wps"
psk = "1234567890abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
params = hostapd.wpa2_params(ssid=ssid)
params.update({"wpa_psk": psk,
"multi_ap": "3",
"multi_ap_backhaul_ssid": '"%s"' % ssid,
"multi_ap_backhaul_wpa_psk": psk})
run_multi_ap_wps(dev, apdev, params)
def test_multi_ap_wps_split(dev, apdev):
"""WPS on split fronthaul and backhaul AP"""
backhaul_ssid = "multi-ap-backhaul-wps"
backhaul_passphrase = "87654321"
params = hostapd.wpa2_params(ssid="multi-ap-fronthaul-wps",
passphrase="12345678")
params.update({"multi_ap": "2",
"multi_ap_backhaul_ssid": '"%s"' % backhaul_ssid,
"multi_ap_backhaul_wpa_passphrase": backhaul_passphrase})
params_backhaul = hostapd.wpa2_params(ssid=backhaul_ssid,
passphrase=backhaul_passphrase)
params_backhaul.update({"multi_ap": "1"})
run_multi_ap_wps(dev, apdev, params, params_backhaul)
def test_multi_ap_wps_split_psk(dev, apdev):
"""WPS on split fronthaul and backhaul AP"""
backhaul_ssid = "multi-ap-backhaul-wps"
backhaul_psk = "1234567890abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
params = hostapd.wpa2_params(ssid="multi-ap-fronthaul-wps",
passphrase="12345678")
params.update({"multi_ap": "2",
"multi_ap_backhaul_ssid": '"%s"' % backhaul_ssid,
"multi_ap_backhaul_wpa_psk": backhaul_psk})
params_backhaul = hostapd.wpa2_params(ssid=backhaul_ssid)
params_backhaul.update({"multi_ap": "1", "wpa_psk": backhaul_psk})
run_multi_ap_wps(dev, apdev, params, params_backhaul)
def test_multi_ap_wps_split_mixed(dev, apdev):
"""WPS on split fronthaul and backhaul AP with mixed-mode fronthaul"""
skip_without_tkip(dev[0])
backhaul_ssid = "multi-ap-backhaul-wps"
backhaul_passphrase = "87654321"
params = hostapd.wpa_mixed_params(ssid="multi-ap-fronthaul-wps",
passphrase="12345678")
params.update({"multi_ap": "2",
"multi_ap_backhaul_ssid": '"%s"' % backhaul_ssid,
"multi_ap_backhaul_wpa_passphrase": backhaul_passphrase})
params_backhaul = hostapd.wpa2_params(ssid=backhaul_ssid,
passphrase=backhaul_passphrase)
params_backhaul.update({"multi_ap": "1"})
run_multi_ap_wps(dev, apdev, params, params_backhaul)
def test_multi_ap_wps_split_open(dev, apdev):
"""WPS on split fronthaul and backhaul AP with open fronthaul"""
backhaul_ssid = "multi-ap-backhaul-wps"
backhaul_passphrase = "87654321"
params = {"ssid": "multi-ap-wps-fronthaul", "multi_ap": "2",
"multi_ap_backhaul_ssid": '"%s"' % backhaul_ssid,
"multi_ap_backhaul_wpa_passphrase": backhaul_passphrase}
params_backhaul = hostapd.wpa2_params(ssid=backhaul_ssid,
passphrase=backhaul_passphrase)
params_backhaul.update({"multi_ap": "1"})
run_multi_ap_wps(dev, apdev, params, params_backhaul)
def test_multi_ap_wps_fail_non_multi_ap(dev, apdev):
"""Multi-AP WPS on non-WPS AP fails"""
params = hostapd.wpa2_params(ssid="non-multi-ap-wps", passphrase="12345678")
params.update({"wps_state": "2", "eap_server": "1"})
hapd = hostapd.add_ap(apdev[0], params)
hapd.request("WPS_PBC")
if "PBC Status: Active" not in hapd.request("WPS_GET_STATUS"):
raise Exception("PBC status not shown correctly")
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
dev[0].request("WPS_PBC %s multi_ap=1" % apdev[0]['bssid'])
# Since we will fail to associate and WPS doesn't even get started, there
# isn't much we can do except wait for timeout. For PBC, it is not possible
# to change the timeout from 2 minutes. Instead of waiting for the timeout,
# just check that WPS doesn't finish within reasonable time.
for i in range(2):
ev = dev[0].wait_event(["WPS-SUCCESS", "WPS-FAIL",
"CTRL-EVENT-DISCONNECTED"], timeout=10)
if ev and "WPS-" in ev:
raise Exception("WPS operation completed: " + ev)
dev[0].request("WPS_CANCEL")