hostap/tests/hwsim/test_ap_csa.py

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# AP CSA tests
# Copyright (c) 2013, Luciano Coelho <luciano.coelho@intel.com>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
from remotehost import remote_compatible
import time
import logging
logger = logging.getLogger()
import hwsim_utils
import hostapd
from utils import HwsimSkip
def connect(dev, apdev, scan_freq="2412", **kwargs):
params = {"ssid": "ap-csa",
"channel": "1"}
params.update(kwargs)
ap = hostapd.add_ap(apdev[0], params)
dev.connect("ap-csa", key_mgmt="NONE", scan_freq=scan_freq)
return ap
def switch_channel(ap, count, freq):
ap.request("CHAN_SWITCH " + str(count) + " " + str(freq))
ev = ap.wait_event(["CTRL-EVENT-STARTED-CHANNEL-SWITCH"], timeout=10)
if ev is None:
raise Exception("Channel switch start event not seen")
if "freq=" + str(freq) not in ev:
raise Exception("Unexpected channel in CS started event")
ev = ap.wait_event(["CTRL-EVENT-CHANNEL-SWITCH"], timeout=10)
if ev is None:
raise Exception("Channel switch completed event not seen")
if "freq=" + str(freq) not in ev:
raise Exception("Unexpected channel in CS completed event")
ev = ap.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=" + str(freq) not in ev:
raise Exception("Unexpected channel in CSA finished event")
def wait_channel_switch(dev, freq):
ev = dev.wait_event(["CTRL-EVENT-STARTED-CHANNEL-SWITCH"], timeout=5)
if ev is None:
raise Exception("Channel switch start not reported")
if "freq=%d" % freq not in ev:
raise Exception("Unexpected frequency in channel switch started: " + ev)
ev = dev.wait_event(["CTRL-EVENT-CHANNEL-SWITCH"], timeout=5)
if ev is None:
raise Exception("Channel switch not reported")
if "freq=%d" % freq not in ev:
raise Exception("Unexpected frequency: " + ev)
# This function checks whether the provided dev, which may be either
# WpaSupplicant or Hostapd supports CSA.
def csa_supported(dev):
res = dev.get_driver_status()
if (int(res['capa.flags'], 0) & 0x80000000) == 0:
raise HwsimSkip("CSA not supported")
@remote_compatible
def test_ap_csa_1_switch(dev, apdev):
"""AP Channel Switch, one switch"""
csa_supported(dev[0])
freq = int(dev[0].get_driver_status_field("freq"))
if freq != 0:
raise Exception("Unexpected driver freq=%d in beginning" % freq)
ap = connect(dev[0], apdev)
freq = int(dev[0].get_driver_status_field("freq"))
if freq != 2412:
raise Exception("Unexpected driver freq=%d after association" % freq)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 10, 2462)
wait_channel_switch(dev[0], 2462)
hwsim_utils.test_connectivity(dev[0], ap)
freq = int(dev[0].get_driver_status_field("freq"))
if freq != 2462:
raise Exception("Unexpected driver freq=%d after channel switch" % freq)
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
freq = int(dev[0].get_driver_status_field("freq"))
if freq != 0:
raise Exception("Unexpected driver freq=%d after disconnection" % freq)
@remote_compatible
def test_ap_csa_2_switches(dev, apdev):
"""AP Channel Switch, two switches"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 10, 2462)
wait_channel_switch(dev[0], 2462)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 10, 2412)
wait_channel_switch(dev[0], 2412)
hwsim_utils.test_connectivity(dev[0], ap)
@remote_compatible
def test_ap_csa_1_switch_count_0(dev, apdev):
"""AP Channel Switch, one switch with count 0"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 0, 2462)
# this does not result in CSA currently, so do not bother checking
# connectivity
@remote_compatible
def test_ap_csa_2_switches_count_0(dev, apdev):
"""AP Channel Switch, two switches with count 0"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 0, 2462)
# this does not result in CSA currently, so do not bother checking
# connectivity
switch_channel(ap, 0, 2412)
# this does not result in CSA currently, so do not bother checking
# connectivity
@remote_compatible
def test_ap_csa_1_switch_count_1(dev, apdev):
"""AP Channel Switch, one switch with count 1"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 1, 2462)
# this does not result in CSA currently, so do not bother checking
# connectivity
@remote_compatible
def test_ap_csa_2_switches_count_1(dev, apdev):
"""AP Channel Switch, two switches with count 1"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 1, 2462)
# this does not result in CSA currently, so do not bother checking
# connectivity
switch_channel(ap, 1, 2412)
# this does not result in CSA currently, so do not bother checking
# connectivity
@remote_compatible
def test_ap_csa_1_switch_count_2(dev, apdev):
"""AP Channel Switch, one switch with count 2"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 2, 2462)
wait_channel_switch(dev[0], 2462)
hwsim_utils.test_connectivity(dev[0], ap)
@remote_compatible
def test_ap_csa_ecsa_only(dev, apdev):
"""AP Channel Switch, one switch with only ECSA IE"""
csa_supported(dev[0])
ap = connect(dev[0], apdev, ecsa_ie_only="1")
hwsim_utils.test_connectivity(dev[0], ap)
switch_channel(ap, 10, 2462)
wait_channel_switch(dev[0], 2462)
hwsim_utils.test_connectivity(dev[0], ap)
@remote_compatible
def test_ap_csa_invalid(dev, apdev):
"""AP Channel Switch - invalid channel"""
csa_supported(dev[0])
ap = connect(dev[0], apdev)
vals = [2461, 4900, 4901, 5181, 5746, 5699, 5895, 5899]
for val in vals:
if "FAIL" not in ap.request("CHAN_SWITCH 1 %d" % val):
raise Exception("Invalid channel accepted: %d" % val)
def test_ap_csa_disable(dev, apdev):
"""AP Channel Switch and DISABLE command before completion"""
csa_supported(dev[0])
ap = connect(dev[0], apdev, scan_freq="2412 2462")
if "OK" not in ap.request("CHAN_SWITCH 10 2462"):
raise Exception("CHAN_SWITCH failed")
ap.disable()
ap.enable()
dev[0].wait_disconnected()
dev[0].wait_connected()