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tests: Scanning and AP changing channels

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Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-12-03 18:53:36 +02:00
parent 865081c307
commit 27b698338f
1 changed files with 52 additions and 1 deletions
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53
tests/hwsim/test_scan.py
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@ -1,5 +1,5 @@
# Scanning tests
# Copyright (c) 2013-2015, Jouni Malinen <j@w1.fi>
# Copyright (c) 2013-2016, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
@ -15,6 +15,7 @@ import hostapd
from wpasupplicant import WpaSupplicant
from utils import HwsimSkip, fail_test, alloc_fail, wait_fail_trigger
from tshark import run_tshark
from test_ap_csa import switch_channel, wait_channel_switch, csa_supported
def check_scan(dev, params, other_started=False, test_busy=False):
if not other_started:
@ -1177,3 +1178,53 @@ def _test_scan_bss_limit(dev, apdev):
hapd2 = hostapd.add_ap(apdev[1], { "ssid": "test-scan-2",
"channel": "6" })
dev[0].scan_for_bss(apdev[1]['bssid'], freq=2437, force_scan=True)
def run_scan(dev, bssid, exp_freq):
for i in range(5):
dev.request("SCAN freq=2412,2437,2462")
ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
bss = dev.get_bss(bssid)
freq = int(bss['freq']) if bss else 0
if freq == exp_freq:
break
if freq != exp_freq:
raise Exception("BSS entry shows incorrect frequency: %d != %d" % (freq, exp_freq))
def test_scan_chan_switch(dev, apdev):
"""Scanning and AP changing channels"""
# This test verifies that wpa_supplicant updates its local BSS table based
# on the correct cfg80211 scan entry in cases where the cfg80211 BSS table
# has multiple (one for each frequency) BSS entries for the same BSS.
csa_supported(dev[0])
hapd = hostapd.add_ap(apdev[0], { "ssid": "test-scan", "channel": "1" })
csa_supported(hapd)
bssid = hapd.own_addr()
logger.info("AP channel switch while not connected")
run_scan(dev[0], bssid, 2412)
dev[0].dump_monitor()
switch_channel(hapd, 1, 2437)
run_scan(dev[0], bssid, 2437)
dev[0].dump_monitor()
switch_channel(hapd, 1, 2462)
run_scan(dev[0], bssid, 2462)
dev[0].dump_monitor()
logger.info("AP channel switch while connected")
dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412 2437 2462")
run_scan(dev[0], bssid, 2462)
dev[0].dump_monitor()
switch_channel(hapd, 2, 2437)
wait_channel_switch(dev[0], 2437)
dev[0].dump_monitor()
run_scan(dev[0], bssid, 2437)
dev[0].dump_monitor()
switch_channel(hapd, 2, 2412)
wait_channel_switch(dev[0], 2412)
dev[0].dump_monitor()
run_scan(dev[0], bssid, 2412)
dev[0].dump_monitor()