# This software may be distributed under the terms of the BSD license.
# See README for more details.
+import logging
+logger = logging.getLogger()
import binascii
+import os
+import subprocess
+import time
import hostapd
from nl80211 import *
ev = hapd.wait_event([ "AP-STA-DISCONNECTED" ], timeout=5)
if ev is None:
raise Exception("No disconnection event received from hostapd")
+
+def nl80211_frame(dev, ifindex, frame, freq=None, duration=None, offchannel_tx_ok=False):
+ attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
+ if freq is not None:
+ attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq)
+ if duration is not None:
+ attrs += build_nl80211_attr_u32('DURATION', duration)
+ if offchannel_tx_ok:
+ attrs += build_nl80211_attr_flag('OFFCHANNEL_TX_OK')
+ attrs += build_nl80211_attr('FRAME', frame)
+ return parse_nl80211_attrs(nl80211_command(dev, 'FRAME', attrs))
+
+def nl80211_frame_wait_cancel(dev, ifindex, cookie):
+ attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
+ attrs += build_nl80211_attr('COOKIE', cookie)
+ return nl80211_command(dev, 'FRAME_WAIT_CANCEL', attrs)
+
+def nl80211_remain_on_channel(dev, ifindex, freq, duration):
+ attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
+ attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq)
+ attrs += build_nl80211_attr_u32('DURATION', duration)
+ return nl80211_command(dev, 'REMAIN_ON_CHANNEL', attrs)
+
+def test_cfg80211_tx_frame(dev, apdev, params):
+ """cfg80211 offchannel TX frame command"""
+ ifindex = int(dev[0].get_driver_status_field("ifindex"))
+
+ frame = binascii.unhexlify("d000000002000000010002000000000002000000010000000409506f9a090001dd5e506f9a0902020025080401001f0502006414060500585804510b0906000200000000000b1000585804510b0102030405060708090a0b0d1d000200000000000108000000000000000000101100084465766963652041110500585804510bdd190050f204104a0001101012000200011049000600372a000120")
+
+ dev[0].request("P2P_GROUP_ADD freq=2412")
+ res = nl80211_frame(dev[0], ifindex, frame, freq=2422, duration=500,
+ offchannel_tx_ok=True)
+ time.sleep(0.1)
+
+ # note: Uncommenting this seems to remove the incorrect channel issue
+ #nl80211_frame_wait_cancel(dev[0], ifindex, res[nl80211_attr['COOKIE']])
+
+ # note: this Action frame ends up getting sent incorrectly on 2422 MHz
+ nl80211_frame(dev[0], ifindex, frame, freq=2412)
+ time.sleep(1.5)
+ # note: also the Deauthenticate frame sent by the GO going down ends up
+ # being transmitted incorrectly on 2422 MHz.
+
+ try:
+ arg = [ "tshark",
+ "-r", os.path.join(params['logdir'], "hwsim0.pcapng"),
+ "-R", "wlan.fc.type_subtype == 13",
+ "-Tfields", "-e", "radiotap.channel.freq" ]
+ cmd = subprocess.Popen(arg, stdout=subprocess.PIPE,
+ stderr=open('/dev/null', 'w'))
+ except Exception, e:
+ logger.info("Could run run tshark check: " + str(e))
+ cmd = None
+ pass
+
+ if cmd:
+ freq = cmd.stdout.read().splitlines()
+ if len(freq) != 2:
+ raise Exception("Unexpected number of Action frames (%d)" % len(freq))
+ if freq[0] != "2422":
+ raise Exception("First Action frame on unexpected channel: %s MHz" % freq[0])
+ if freq[1] != "2412":
+ raise Exception("Second Action frame on unexpected channel: %s MHz" % freq[1])