hostap/tests/hwsim/hwsim_utils.py
Jonathan Afek e2f3f0232f tests: Use 10 retries for over-the-air broadcast connectivity
The regular hwsim tests use both unicast and broadcast frames to test
the connectivity between 2 interfaces. For real hardware (remote hwsim
tests) the broadcast frames will sometimes not be seen by all connected
stations since they can be in low power mode during DTIM or because
broadcast frames are not ACKed. Use 10 retries for broadcast
connectivity tests for real hardware so that the test will pass if we
successfully received at least one of them.

Signed-off-by: Jonathan Afek <jonathanx.afek@intel.com>
2016-05-28 16:33:41 +03:00

179 lines
6.5 KiB
Python

# hwsim testing utilities
# Copyright (c) 2013-2014, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import os
import subprocess
import time
import logging
logger = logging.getLogger()
from wpasupplicant import WpaSupplicant
def run_connectivity_test(dev1, dev2, tos, dev1group=False, dev2group=False,
ifname1=None, ifname2=None, config=True, timeout=5):
addr1 = dev1.own_addr()
if not dev1group and isinstance(dev1, WpaSupplicant):
addr1 = dev1.get_driver_status_field('addr')
addr2 = dev2.own_addr()
if not dev2group and isinstance(dev2, WpaSupplicant):
addr2 = dev2.get_driver_status_field('addr')
dev1.dump_monitor()
dev2.dump_monitor()
if dev1.hostname is None and dev2.hostname is None:
broadcast_retry_c = 1
else:
broadcast_retry_c = 10
try:
if config:
cmd = "DATA_TEST_CONFIG 1"
if ifname1:
cmd = cmd + " ifname=" + ifname1
if dev1group:
res = dev1.group_request(cmd)
else:
res = dev1.request(cmd)
if "OK" not in res:
raise Exception("Failed to enable data test functionality")
cmd = "DATA_TEST_CONFIG 1"
if ifname2:
cmd = cmd + " ifname=" + ifname2
if dev2group:
res = dev2.group_request(cmd)
else:
res = dev2.request(cmd)
if "OK" not in res:
raise Exception("Failed to enable data test functionality")
cmd = "DATA_TEST_TX {} {} {}".format(addr2, addr1, tos)
if dev1group:
dev1.group_request(cmd)
else:
dev1.request(cmd)
if dev2group:
ev = dev2.wait_group_event(["DATA-TEST-RX"], timeout=timeout)
else:
ev = dev2.wait_event(["DATA-TEST-RX"], timeout=timeout)
if ev is None:
raise Exception("dev1->dev2 unicast data delivery failed")
if "DATA-TEST-RX {} {}".format(addr2, addr1) not in ev:
raise Exception("Unexpected dev1->dev2 unicast data result")
cmd = "DATA_TEST_TX ff:ff:ff:ff:ff:ff {} {}".format(addr1, tos)
for i in xrange(broadcast_retry_c):
try:
if dev1group:
dev1.group_request(cmd)
else:
dev1.request(cmd)
if dev2group:
ev = dev2.wait_group_event(["DATA-TEST-RX"],
timeout=timeout)
else:
ev = dev2.wait_event(["DATA-TEST-RX"], timeout=timeout)
if ev is None:
raise Exception("dev1->dev2 broadcast data delivery failed")
if "DATA-TEST-RX ff:ff:ff:ff:ff:ff {}".format(addr1) not in ev:
raise Exception("Unexpected dev1->dev2 broadcast data result")
break
except Exception as e:
if i == broadcast_retry_c - 1:
raise
cmd = "DATA_TEST_TX {} {} {}".format(addr1, addr2, tos)
if dev2group:
dev2.group_request(cmd)
else:
dev2.request(cmd)
if dev1group:
ev = dev1.wait_group_event(["DATA-TEST-RX"], timeout=timeout)
else:
ev = dev1.wait_event(["DATA-TEST-RX"], timeout=timeout)
if ev is None:
raise Exception("dev2->dev1 unicast data delivery failed")
if "DATA-TEST-RX {} {}".format(addr1, addr2) not in ev:
raise Exception("Unexpected dev2->dev1 unicast data result")
cmd = "DATA_TEST_TX ff:ff:ff:ff:ff:ff {} {}".format(addr2, tos)
for i in xrange(broadcast_retry_c):
try:
if dev2group:
dev2.group_request(cmd)
else:
dev2.request(cmd)
if dev1group:
ev = dev1.wait_group_event(["DATA-TEST-RX"],
timeout=timeout)
else:
ev = dev1.wait_event(["DATA-TEST-RX"], timeout=timeout)
if ev is None:
raise Exception("dev2->dev1 broadcast data delivery failed")
if "DATA-TEST-RX ff:ff:ff:ff:ff:ff {}".format(addr2) not in ev:
raise Exception("Unexpected dev2->dev1 broadcast data result")
break
except Exception as e:
if i == broadcast_retry_c - 1:
raise
finally:
if config:
if dev1group:
dev1.group_request("DATA_TEST_CONFIG 0")
else:
dev1.request("DATA_TEST_CONFIG 0")
if dev2group:
dev2.group_request("DATA_TEST_CONFIG 0")
else:
dev2.request("DATA_TEST_CONFIG 0")
def test_connectivity(dev1, dev2, dscp=None, tos=None, max_tries=1,
dev1group=False, dev2group=False,
ifname1=None, ifname2=None, config=True, timeout=5):
if dscp:
tos = dscp << 2
if not tos:
tos = 0
success = False
last_err = None
for i in range(0, max_tries):
try:
run_connectivity_test(dev1, dev2, tos, dev1group, dev2group,
ifname1, ifname2, config=config,
timeout=timeout)
success = True
break
except Exception, e:
last_err = e
if i + 1 < max_tries:
time.sleep(1)
if not success:
raise Exception(last_err)
def test_connectivity_iface(dev1, dev2, ifname, dscp=None, tos=None,
max_tries=1):
test_connectivity(dev1, dev2, dscp, tos, ifname2=ifname,
max_tries=max_tries)
def test_connectivity_p2p(dev1, dev2, dscp=None, tos=None):
test_connectivity(dev1, dev2, dscp, tos, dev1group=True, dev2group=True)
def test_connectivity_p2p_sta(dev1, dev2, dscp=None, tos=None):
test_connectivity(dev1, dev2, dscp, tos, dev1group=True, dev2group=False)
def test_connectivity_sta(dev1, dev2, dscp=None, tos=None):
test_connectivity(dev1, dev2, dscp, tos)
(PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL) = range(4)
def set_powersave(dev, val):
phy = dev.get_driver_status_field("phyname")
psf = open('/sys/kernel/debug/ieee80211/%s/hwsim/ps' % phy, 'w')
psf.write('%d\n' % val)
psf.close()