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tests: Add basic power saving tests for ap_open

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ap_open_sta_ps checks whether a STA told its hardware to enter power
save after enabling power save.

ap_open_ps_mc_buf checks whether an AP properly buffers and releases
multicast frames when a STA with PS active is associated.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
This commit is contained in:
Thomas Pedersen 2020-02-04 23:13:49 -08:00 committed by Jouni Malinen
parent 1d9d6c2432
commit 1c67a07603
1 changed files with 74 additions and 0 deletions
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74
tests/hwsim/test_ap_open.py
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@ -491,6 +491,80 @@ def test_ap_open_disconnect_in_ps(dev, apdev, params):
if state != 2:
raise Exception("Didn't observe TIM bit getting set and unset (state=%d)" % state)
def test_ap_open_sta_ps(dev, apdev):
"""Station power save operation"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
bg_scan_period="0")
hapd.wait_sta()
time.sleep(0.2)
try:
dev[0].cmd_execute(['iw', 'dev', dev[0].ifname,
'set', 'power_save', 'on'])
run_ap_open_sta_ps(dev, hapd)
finally:
dev[0].cmd_execute(['iw', 'dev', dev[0].ifname,
'set', 'power_save', 'on'])
def run_ap_open_sta_ps(dev, hapd):
hwsim_utils.test_connectivity(dev[0], hapd)
# Give time to enter PS
time.sleep(0.2)
phyname = dev[0].get_driver_status_field("phyname")
hw_conf = '/sys/kernel/debug/ieee80211/' + phyname + '/hw_conf'
try:
ok = False
for i in range(10):
with open(hw_conf, 'r') as f:
val = int(f.read())
if val & 2:
ok = True
break
time.sleep(0.2)
if not ok:
raise Exception("STA did not enter power save")
except FileNotFoundError:
raise HwsimSkip("Kernel does not support inspecting HW PS state")
def test_ap_open_ps_mc_buf(dev, apdev, params):
"""Multicast buffering with a station in power save"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
bg_scan_period="0")
hapd.wait_sta()
buffered_mcast = 0
try:
dev[0].cmd_execute(['iw', 'dev', dev[0].ifname,
'set', 'power_save', 'on'])
# Give time to enter PS
time.sleep(0.3)
for i in range(10):
# Verify that multicast frames are released
hwsim_utils.run_multicast_connectivity_test(hapd, dev[0])
# Check frames were buffered until DTIM
out = run_tshark(os.path.join(params['logdir'], "hwsim0.pcapng"),
"wlan.fc.type_subtype == 0x0008",
["wlan.tim.bmapctl.multicast"])
for line in out.splitlines():
buffered_mcast = int(line)
if buffered_mcast == 1:
break
if buffered_mcast == 1:
break
finally:
dev[0].cmd_execute(['iw', 'dev', dev[0].ifname,
'set', 'power_save', 'off'])
if buffered_mcast != 1:
raise Exception("AP did not buffer multicast frames")
@remote_compatible
def test_ap_open_select_network(dev, apdev):
"""Open mode connection and SELECT_NETWORK to change network"""