tests: Add wpa_supplicant WMM-AC test

Add basic wpa_supplicant tests for WMM-AC TSPEC addition/deletion.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>

tests/hwsim/test_wpas_wmm_ac.py

@@ -0,0 +1,76 @@
+# Test cases for wpa_supplicant WMM-AC operations
+# Copyright (c) 2014, Intel Corporation
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import logging
+logger = logging.getLogger()
+
+import hwsim_utils
+import hostapd
+
+def add_wmm_ap(apdev, acm_list):
+    params = { "ssid": "wmm_ac",
+               "hw_mode": "g",
+               "channel": "11",
+               "wmm_enabled" : "1"}
+
+    for ac in acm_list:
+        params["wmm_ac_%s_acm" % (ac.lower())] = "1"
+
+    return hostapd.add_ap(apdev[0]['ifname'], params)
+
+def test_tspec(dev, apdev):
+    """Basic addts/delts tests"""
+    # configure ap with VO and VI requiring admission-control
+    hapd = add_wmm_ap(apdev, ["VO", "VI"])
+    dev[0].connect("wmm_ac", key_mgmt="NONE", scan_freq="2462")
+    hwsim_utils.test_connectivity(dev[0], hapd)
+    status = dev[0].request("WMM_AC_STATUS")
+    if "WMM AC is Enabled" not in status:
+        raise Exception("WMM-AC not enabled")
+    if "TSID" in status:
+        raise Exception("Unexpected TSID info")
+    if "BK: acm=0 uapsd=0" not in status:
+        raise Exception("Unexpected BK info" + status)
+    if "BE: acm=0 uapsd=0" not in status:
+        raise Exception("Unexpected BE info" + status)
+    if "VI: acm=1 uapsd=0" not in status:
+        raise Exception("Unexpected VI info" + status)
+    if "VO: acm=1 uapsd=0" not in status:
+        raise Exception("Unexpected VO info" + status)
+
+    tsid = 5
+
+    # make sure we fail when the ac is not configured for acm
+    try:
+        dev[0].add_ts(tsid, 3)
+        raise Exception("ADDTS succeeded although it should have failed")
+    except Exception, e:
+        if not str(e).startswith("ADDTS failed"):
+            raise
+    status = dev[0].request("WMM_AC_STATUS")
+    if "TSID" in status:
+        raise Exception("Unexpected TSID info")
+
+    # add tspec for UP=6
+    dev[0].add_ts(tsid, 6)
+    status = dev[0].request("WMM_AC_STATUS")
+    if "TSID" not in status:
+        raise Exception("Missing TSID info")
+
+    # using the same tsid for a different ac is invalid
+    try:
+        dev[0].add_ts(tsid, 5)
+        raise Exception("ADDTS succeeded although it should have failed")
+    except Exception, e:
+        if not str(e).startswith("ADDTS failed"):
+            raise
+
+    # update the tspec for a different UP of the same ac
+    dev[0].add_ts(tsid, 7)
+    dev[0].del_ts(tsid)
+    status = dev[0].request("WMM_AC_STATUS")
+    if "TSID" in status:
+        raise Exception("Unexpected TSID info")

tests/hwsim/wpasupplicant.py

@@ -701,6 +701,36 @@ class WpaSupplicant:
             raise Exception("Failed to request TDLS teardown")
         return None
 
+    def add_ts(self, tsid, up):
+        params = {
+            "sba": 9000,
+            "nominal_msdu_size": 1500,
+            "min_phy_rate": 6000000,
+            "mean_data_rate": 1500,
+        }
+        cmd = "WMM_AC_ADDTS downlink tsid=%d up=%d" % (tsid, up)
+        for (key, value) in params.iteritems():
+            cmd += " %s=%d" % (key, value)
+
+        if self.request(cmd).strip() != "OK":
+            raise Exception("ADDTS failed (tsid=%d up=%d)" % (tsid, up))
+
+        ev = self.wait_event(["TSPEC-ADDED"], timeout=1)
+        if ev is None:
+            raise Exception("ADDTS failed (time out)")
+        if "tsid=%d" % (tsid) not in ev:
+            raise Exception("ADDTS failed (invalid tsid in TSPEC-ADDED)")
+
+    def del_ts(self, tsid):
+        if self.request("WMM_AC_DELTS %d" % (tsid)).strip() != "OK":
+            raise Exception("DELTS failed")
+
+        ev = self.wait_event(["TSPEC-REMOVED"], timeout=1)
+        if ev is None:
+            raise Exception("DELTS failed (time out)")
+        if "tsid=%d" % (tsid) not in ev:
+            raise Exception("DELTS failed (invalid tsid in TSPEC-REMOVED)")
+
     def connect(self, ssid=None, ssid2=None, **kwargs):
         logger.info("Connect STA " + self.ifname + " to AP")
         id = self.add_network()