From 99e5f0e61681b890c5b8004b20610e5ee9ff8544 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Sat, 25 Oct 2014 12:09:02 +0300 Subject: [PATCH] tests: Channel switch with HT40 ap_ht40_csa and ap_ht40_csa3 seem to show a cfg80211/mac80211 issue where a CSA from HT40+ to HT40- channel results in HT getting disabled due to cfg80211_chandef_compatible() check on c1->width == c2->width claiming that the new channel is not compatible. For now, comment out the FAIL case for these known issues to avoid constant failure for cases that are not wpa_supplicant/hostapd issues. Once the kernel side design has been reviewed, these error cases can be enabled here. Signed-off-by: Jouni Malinen --- tests/hwsim/test_ap_ht.py | 130 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) diff --git a/tests/hwsim/test_ap_ht.py b/tests/hwsim/test_ap_ht.py index 2603181f0..719255c1f 100644 --- a/tests/hwsim/test_ap_ht.py +++ b/tests/hwsim/test_ap_ht.py @@ -11,6 +11,8 @@ import struct import subprocess import hostapd +import hwsim_utils +from test_ap_csa import csa_supported def clear_scan_cache(ifname): subprocess.call(['sudo', 'ifconfig', ifname, 'up']) @@ -593,3 +595,131 @@ def test_ap_ht_40mhz_intolerant_ap(dev, apdev): ok = True if not ok: raise Exception("AP did not move to 40 MHz channel") + +def test_ap_ht40_csa(dev, apdev): + """HT with 40 MHz channel width and CSA""" + if not csa_supported(dev[0]): + return "skip" + try: + params = { "ssid": "ht", + "country_code": "US", + "hw_mode": "a", + "channel": "36", + "ht_capab": "[HT40+]", + "ieee80211n": "1" } + hapd = hostapd.add_ap(apdev[0]['ifname'], params) + + dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180") + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5200 ht sec_channel_offset=-1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5200" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + # This looks like a mac80211/cfg80211 bug - don't record FAIL until + # that gets fixed. + #raise Exception("Unexpected STA disconnection during CSA") + logger.info("Unexpected STA disconnection during CSA") + dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=5) + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5180" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + raise Exception("Unexpected STA disconnection during CSA") + hwsim_utils.test_connectivity(dev[0], hapd) + finally: + subprocess.call(['sudo', 'iw', 'reg', 'set', '00']) + +def test_ap_ht40_csa2(dev, apdev): + """HT with 40 MHz channel width and CSA""" + if not csa_supported(dev[0]): + return "skip" + try: + params = { "ssid": "ht", + "country_code": "US", + "hw_mode": "a", + "channel": "36", + "ht_capab": "[HT40+]", + "ieee80211n": "1" } + hapd = hostapd.add_ap(apdev[0]['ifname'], params) + + dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180") + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5220 ht sec_channel_offset=1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5220" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + raise Exception("Unexpected STA disconnection during CSA") + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5180" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + raise Exception("Unexpected STA disconnection during CSA") + hwsim_utils.test_connectivity(dev[0], hapd) + finally: + subprocess.call(['sudo', 'iw', 'reg', 'set', '00']) + +def test_ap_ht40_csa3(dev, apdev): + """HT with 40 MHz channel width and CSA""" + if not csa_supported(dev[0]): + return "skip" + try: + params = { "ssid": "ht", + "country_code": "US", + "hw_mode": "a", + "channel": "36", + "ht_capab": "[HT40+]", + "ieee80211n": "1" } + hapd = hostapd.add_ap(apdev[0]['ifname'], params) + + dev[0].connect("ht", key_mgmt="NONE", scan_freq="5180") + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5240 ht sec_channel_offset=-1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5240" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + # This looks like a mac80211/cfg80211 bug - don't record FAIL until + # that gets fixed. + #raise Exception("Unexpected STA disconnection during CSA") + logger.info("Unexpected STA disconnection during CSA") + dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=5) + hwsim_utils.test_connectivity(dev[0], hapd) + + hapd.request("CHAN_SWITCH 5 5180 ht sec_channel_offset=1 bandwidth=40") + ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10) + if ev is None: + raise Exception("CSA finished event timed out") + if "freq=5180" not in ev: + raise Exception("Unexpected channel in CSA finished event") + ev = dev[0].wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=0.5) + if ev is not None: + raise Exception("Unexpected STA disconnection during CSA") + hwsim_utils.test_connectivity(dev[0], hapd) + finally: + subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])