hostap/tests/hwsim/hwsim_utils.py

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# 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 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,
multicast_to_unicast=False, broadcast=True):
addr1 = dev1.own_addr()
if not dev1group and isinstance(dev1, WpaSupplicant):
addr = dev1.get_driver_status_field('addr')
if addr:
addr1 = addr
addr2 = dev2.own_addr()
if not dev2group and isinstance(dev2, WpaSupplicant):
addr = dev2.get_driver_status_field('addr')
if addr:
addr2 = 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")
if broadcast:
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")
if broadcast:
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 multicast_to_unicast:
if "DATA-TEST-RX ff:ff:ff:ff:ff:ff {}".format(addr2) in ev:
raise Exception("Unexpected dev2->dev1 broadcast data result: multicast to unicast conversion missing")
if "DATA-TEST-RX {} {}".format(addr1, addr2) not in ev:
raise Exception("Unexpected dev2->dev1 broadcast data result (multicast to unicast enabled)")
else:
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,
multicast_to_unicast=False, success_expected=True,
broadcast=True):
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,
multicast_to_unicast=multicast_to_unicast,
broadcast=broadcast)
success = True
break
except Exception, e:
last_err = e
if i + 1 < max_tries:
time.sleep(1)
if success_expected and not success:
raise Exception(last_err)
if not success_expected and success:
raise Exception("Unexpected connectivity detected")
def test_connectivity_iface(dev1, dev2, ifname, dscp=None, tos=None,
max_tries=1, timeout=5):
test_connectivity(dev1, dev2, dscp, tos, ifname2=ifname,
max_tries=max_tries, timeout=timeout)
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")
fname = '/sys/kernel/debug/ieee80211/%s/hwsim/ps' % phy
data = '%d' % val
(res, data) = dev.cmd_execute(["echo", data, ">", fname], shell=True)
if res != 0:
raise Exception("Failed to set power save for device")
def set_group_map(dev, val):
phy = dev.get_driver_status_field("phyname")
fname = '/sys/kernel/debug/ieee80211/%s/hwsim/group' % phy
data = '%d' % val
(res, data) = dev.cmd_execute(["echo", data, ">", fname], shell=True)
if res != 0:
raise Exception("Failed to set group map for %s" % phy)