tests: Channel switch with VHT80

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/test_ap_vht.py

@@ -13,6 +13,7 @@ import subprocess, time
 import hwsim_utils
 import hostapd
 from test_dfs import wait_dfs_event
+from test_ap_csa import csa_supported
 
 def vht_supported():
     cmd = subprocess.Popen(["iw", "reg", "get"], stdout=subprocess.PIPE)
@@ -275,3 +276,53 @@ def test_ap_vht80plus80(dev, apdev):
         raise
     finally:
         subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])
+
+def test_ap_vht80_csa(dev, apdev):
+    """VHT with 80 MHz channel width and CSA"""
+    if not csa_supported(dev[0]):
+        return "skip"
+    try:
+        params = { "ssid": "vht",
+                   "country_code": "US",
+                   "hw_mode": "a",
+                   "channel": "149",
+                   "ht_capab": "[HT40+]",
+                   "ieee80211n": "1",
+                   "ieee80211ac": "1",
+                   "vht_oper_chwidth": "1",
+                   "vht_oper_centr_freq_seg0_idx": "155" }
+        hapd = hostapd.add_ap(apdev[0]['ifname'], params)
+
+        dev[0].connect("vht", key_mgmt="NONE", scan_freq="5745")
+        hwsim_utils.test_connectivity(dev[0], hapd)
+
+        hapd.request("CHAN_SWITCH 5 5180 ht vht blocktx center_freq1=5210 sec_channel_offset=1 bandwidth=80")
+        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")
+        time.sleep(0.5)
+        hwsim_utils.test_connectivity(dev[0], hapd)
+
+        hapd.request("CHAN_SWITCH 5 5745")
+        ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
+        if ev is None:
+            raise Exception("CSA finished event timed out")
+        if "freq=5745" not in ev:
+            raise Exception("Unexpected channel in CSA finished event")
+        time.sleep(0.5)
+        hwsim_utils.test_connectivity(dev[0], hapd)
+
+        # This CSA to same channel will fail in kernel, so use this only for
+        # extra code coverage.
+        hapd.request("CHAN_SWITCH 5 5745")
+        hapd.wait_event(["AP-CSA-FINISHED"], timeout=1)
+    except Exception, e:
+        if isinstance(e, Exception) and str(e) == "AP startup failed":
+            if not vht_supported():
+                logger.info("80 MHz channel not supported in regulatory information")
+                return "skip"
+        raise
+    finally:
+        subprocess.call(['sudo', 'iw', 'reg', 'set', '00'])