hostap/tests/hwsim/hwsim_utils.py
Thomas Pedersen 1d9d6c2432 tests: Factor out multicast connectivity check
A test may want to check multicast connectivity independent of unicast
or check multicast without exercising unicast first. Factor out the
multicast connectivity check code into its own function.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
2020-02-15 18:36:29 +02:00

246 lines
9.5 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 time
import logging
logger = logging.getLogger()
from wpasupplicant import WpaSupplicant
def config_data_test(dev1, dev2, dev1group, dev2group, ifname1, ifname2):
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")
def run_multicast_connectivity_test(dev1, dev2, tos=None,
dev1group=False, dev2group=False,
ifname1=None, ifname2=None,
config=True, timeout=5,
send_len=None, multicast_to_unicast=False,
broadcast_retry_c=1):
addr1 = dev1.get_addr(dev1group)
addr2 = dev2.get_addr(dev2group)
if config:
config_data_test(dev1, dev2, dev1group, dev2group, ifname1, ifname2)
cmd = "DATA_TEST_TX ff:ff:ff:ff:ff:ff {} {}".format(addr1, tos)
if send_len is not None:
cmd += " len=" + str(send_len)
for i in range(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 multicast_to_unicast:
if "DATA-TEST-RX ff:ff:ff:ff:ff:ff {}".format(addr1) in ev:
raise Exception("Unexpected dev1->dev2 broadcast data result: multicast to unicast conversion missing")
if "DATA-TEST-RX {} {}".format(addr2, addr1) not in ev:
raise Exception("Unexpected dev1->dev2 broadcast data result (multicast to unicast enabled)")
else:
if "DATA-TEST-RX ff:ff:ff:ff:ff:ff {}".format(addr1) not in ev:
raise Exception("Unexpected dev1->dev2 broadcast data result")
if send_len is not None:
if " len=" + str(send_len) not in ev:
raise Exception("Unexpected dev1->dev2 broadcast data length")
else:
if " len=" in ev:
raise Exception("Unexpected dev1->dev2 broadcast data length")
break
except Exception as e:
if i == broadcast_retry_c - 1:
raise
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,
send_len=None):
addr1 = dev1.get_addr(dev1group)
addr2 = dev2.get_addr(dev2group)
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:
config_data_test(dev1, dev2, dev1group, dev2group, ifname1, ifname2)
cmd = "DATA_TEST_TX {} {} {}".format(addr2, addr1, tos)
if send_len is not None:
cmd += " len=" + str(send_len)
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 send_len is not None:
if " len=" + str(send_len) not in ev:
raise Exception("Unexpected dev1->dev2 unicast data length")
else:
if " len=" in ev:
raise Exception("Unexpected dev1->dev2 unicast data length")
if broadcast:
run_multicast_connectivity_test(dev1, dev2, tos,
dev1group, dev2group,
ifname1, ifname2, False, timeout,
send_len, False, broadcast_retry_c)
cmd = "DATA_TEST_TX {} {} {}".format(addr1, addr2, tos)
if send_len is not None:
cmd += " len=" + str(send_len)
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 send_len is not None:
if " len=" + str(send_len) not in ev:
raise Exception("Unexpected dev2->dev1 unicast data length")
else:
if " len=" in ev:
raise Exception("Unexpected dev2->dev1 unicast data length")
if broadcast:
run_multicast_connectivity_test(dev2, dev1, tos,
dev2group, dev1group,
ifname2, ifname1, False, timeout,
send_len, multicast_to_unicast,
broadcast_retry_c)
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, send_len=None):
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, send_len=send_len)
success = True
break
except Exception as 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) = list(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)
def set_rx_rssi(dev, val):
"""
Configure signal strength when receiving transmitted frames.
mac80211_hwsim driver sets rssi to: TX power - 50
According to that set tx_power in order to get the desired RSSI.
Valid RSSI range: -50 to -30.
"""
tx_power = (val + 50) * 100
ifname = dev.get_driver_status_field("ifname")
(res, data) = dev.cmd_execute(['iw', ifname, 'set', 'txpower',
'fixed', str(tx_power)])
if res != 0:
raise Exception("Failed to set RSSI to %d" % val)
def reset_rx_rssi(dev):
set_rx_rssi(dev, -30)