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This test case was failing frequently due to the station not being able to connect back to the AP if the interrupted channel switch ended up moving the AP to the new channel anyway on restart. Scan both possible channels to allow the AP to be found in either case. Signed-off-by: Jouni Malinen <j@w1.fi>
197 lines
6.6 KiB
Python
197 lines
6.6 KiB
Python
# AP CSA tests
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# Copyright (c) 2013, Luciano Coelho <luciano.coelho@intel.com>
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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from remotehost import remote_compatible
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import time
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import logging
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logger = logging.getLogger()
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import hwsim_utils
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import hostapd
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from utils import HwsimSkip
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def connect(dev, apdev, scan_freq="2412", **kwargs):
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params = {"ssid": "ap-csa",
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"channel": "1"}
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params.update(kwargs)
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ap = hostapd.add_ap(apdev[0], params)
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dev.connect("ap-csa", key_mgmt="NONE", scan_freq=scan_freq)
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return ap
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def switch_channel(ap, count, freq):
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ap.request("CHAN_SWITCH " + str(count) + " " + str(freq))
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ev = ap.wait_event(["CTRL-EVENT-STARTED-CHANNEL-SWITCH"], timeout=10)
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if ev is None:
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raise Exception("Channel switch start event not seen")
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if "freq=" + str(freq) not in ev:
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raise Exception("Unexpected channel in CS started event")
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ev = ap.wait_event(["CTRL-EVENT-CHANNEL-SWITCH"], timeout=10)
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if ev is None:
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raise Exception("Channel switch completed event not seen")
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if "freq=" + str(freq) not in ev:
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raise Exception("Unexpected channel in CS completed event")
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ev = ap.wait_event(["AP-CSA-FINISHED"], timeout=10)
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if ev is None:
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raise Exception("CSA finished event timed out")
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if "freq=" + str(freq) not in ev:
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raise Exception("Unexpected channel in CSA finished event")
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def wait_channel_switch(dev, freq):
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ev = dev.wait_event(["CTRL-EVENT-STARTED-CHANNEL-SWITCH"], timeout=5)
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if ev is None:
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raise Exception("Channel switch start not reported")
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if "freq=%d" % freq not in ev:
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raise Exception("Unexpected frequency in channel switch started: " + ev)
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ev = dev.wait_event(["CTRL-EVENT-CHANNEL-SWITCH"], timeout=5)
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if ev is None:
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raise Exception("Channel switch not reported")
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if "freq=%d" % freq not in ev:
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raise Exception("Unexpected frequency: " + ev)
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# This function checks whether the provided dev, which may be either
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# WpaSupplicant or Hostapd supports CSA.
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def csa_supported(dev):
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res = dev.get_driver_status()
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if (int(res['capa.flags'], 0) & 0x80000000) == 0:
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raise HwsimSkip("CSA not supported")
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@remote_compatible
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def test_ap_csa_1_switch(dev, apdev):
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"""AP Channel Switch, one switch"""
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csa_supported(dev[0])
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freq = int(dev[0].get_driver_status_field("freq"))
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if freq != 0:
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raise Exception("Unexpected driver freq=%d in beginning" % freq)
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ap = connect(dev[0], apdev)
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freq = int(dev[0].get_driver_status_field("freq"))
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if freq != 2412:
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raise Exception("Unexpected driver freq=%d after association" % freq)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 10, 2462)
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wait_channel_switch(dev[0], 2462)
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hwsim_utils.test_connectivity(dev[0], ap)
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freq = int(dev[0].get_driver_status_field("freq"))
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if freq != 2462:
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raise Exception("Unexpected driver freq=%d after channel switch" % freq)
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dev[0].request("DISCONNECT")
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dev[0].wait_disconnected()
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freq = int(dev[0].get_driver_status_field("freq"))
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if freq != 0:
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raise Exception("Unexpected driver freq=%d after disconnection" % freq)
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@remote_compatible
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def test_ap_csa_2_switches(dev, apdev):
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"""AP Channel Switch, two switches"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 10, 2462)
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wait_channel_switch(dev[0], 2462)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 10, 2412)
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wait_channel_switch(dev[0], 2412)
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hwsim_utils.test_connectivity(dev[0], ap)
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@remote_compatible
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def test_ap_csa_1_switch_count_0(dev, apdev):
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"""AP Channel Switch, one switch with count 0"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 0, 2462)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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@remote_compatible
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def test_ap_csa_2_switches_count_0(dev, apdev):
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"""AP Channel Switch, two switches with count 0"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 0, 2462)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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switch_channel(ap, 0, 2412)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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@remote_compatible
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def test_ap_csa_1_switch_count_1(dev, apdev):
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"""AP Channel Switch, one switch with count 1"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 1, 2462)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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@remote_compatible
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def test_ap_csa_2_switches_count_1(dev, apdev):
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"""AP Channel Switch, two switches with count 1"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 1, 2462)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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switch_channel(ap, 1, 2412)
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# this does not result in CSA currently, so do not bother checking
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# connectivity
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@remote_compatible
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def test_ap_csa_1_switch_count_2(dev, apdev):
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"""AP Channel Switch, one switch with count 2"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 2, 2462)
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wait_channel_switch(dev[0], 2462)
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hwsim_utils.test_connectivity(dev[0], ap)
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@remote_compatible
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def test_ap_csa_ecsa_only(dev, apdev):
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"""AP Channel Switch, one switch with only ECSA IE"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev, ecsa_ie_only="1")
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hwsim_utils.test_connectivity(dev[0], ap)
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switch_channel(ap, 10, 2462)
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wait_channel_switch(dev[0], 2462)
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hwsim_utils.test_connectivity(dev[0], ap)
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@remote_compatible
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def test_ap_csa_invalid(dev, apdev):
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"""AP Channel Switch - invalid channel"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev)
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vals = [2461, 4900, 4901, 5181, 5746, 5699, 5895, 5899]
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for val in vals:
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if "FAIL" not in ap.request("CHAN_SWITCH 1 %d" % val):
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raise Exception("Invalid channel accepted: %d" % val)
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def test_ap_csa_disable(dev, apdev):
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"""AP Channel Switch and DISABLE command before completion"""
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csa_supported(dev[0])
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ap = connect(dev[0], apdev, scan_freq="2412 2462")
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if "OK" not in ap.request("CHAN_SWITCH 10 2462"):
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raise Exception("CHAN_SWITCH failed")
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ap.disable()
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ap.enable()
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dev[0].wait_disconnected()
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dev[0].wait_connected()
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