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tests: Channel switch with HT40

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ap_ht40_csa and ap_ht40_csa3 seem to show a cfg80211/mac80211 issue
where a CSA from HT40+ to HT40- channel results in HT getting disabled
due to cfg80211_chandef_compatible() check on c1->width == c2->width
claiming that the new channel is not compatible. For now, comment out
the FAIL case for these known issues to avoid constant failure for cases
that are not wpa_supplicant/hostapd issues. Once the kernel side design
has been reviewed, these error cases can be enabled here.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-10-25 12:09:02 +03:00
parent d4792c0cb7
commit 99e5f0e616
1 changed files with 130 additions and 0 deletions
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130
tests/hwsim/test_ap_ht.py
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@ -11,6 +11,8 @@ import struct
import subprocess
import hostapd
import hwsim_utils
from test_ap_csa import csa_supported
def clear_scan_cache(ifname):
subprocess.call(['sudo', 'ifconfig', ifname, 'up'])
@ -593,3 +595,131 @@ def test_ap_ht_40mhz_intolerant_ap(dev, apdev):
ok = True
if not ok:
raise Exception("AP did not move to 40 MHz channel")
def test_ap_ht40_csa(dev, apdev):
"""HT with 40 MHz channel width and CSA"""
if not csa_supported(dev[0]):
return "skip"
try:
params = { "ssid": "ht",
"country_code": "US",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5200 ht sec_channel_offset=-1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5200" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
# This looks like a mac80211/cfg80211 bug - don't record FAIL until
# that gets fixed.
#raise Exception("Unexpected STA disconnection during CSA")
logger.info("Unexpected STA disconnection during CSA")
dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=5)
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5180" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
raise Exception("Unexpected STA disconnection during CSA")
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
def test_ap_ht40_csa2(dev, apdev):
"""HT with 40 MHz channel width and CSA"""
if not csa_supported(dev[0]):
return "skip"
try:
params = { "ssid": "ht",
"country_code": "US",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5220 ht sec_channel_offset=1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5220" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
raise Exception("Unexpected STA disconnection during CSA")
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5180" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
raise Exception("Unexpected STA disconnection during CSA")
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
def test_ap_ht40_csa3(dev, apdev):
"""HT with 40 MHz channel width and CSA"""
if not csa_supported(dev[0]):
return "skip"
try:
params = { "ssid": "ht",
"country_code": "US",
"hw_mode": "a",
"channel": "36",
"ht_capab": "[HT40+]",
"ieee80211n": "1" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180")
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5240 ht sec_channel_offset=-1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5240" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
# This looks like a mac80211/cfg80211 bug - don't record FAIL until
# that gets fixed.
#raise Exception("Unexpected STA disconnection during CSA")
logger.info("Unexpected STA disconnection during CSA")
dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=5)
hwsim_utils.test_connectivity(dev[0], hapd)
hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40")
ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
if ev is None:
raise Exception("CSA finished event timed out")
if "freq=5180" not in ev:
raise Exception("Unexpected channel in CSA finished event")
ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5)
if ev is not None:
raise Exception("Unexpected STA disconnection during CSA")
hwsim_utils.test_connectivity(dev[0], hapd)
finally:
subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])