tests: P2P channel selection

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

tests/hwsim/test_p2p_channel.py

@@ -0,0 +1,142 @@
+# P2P channel selection test cases
+# Copyright (c) 2014, Jouni Malinen <j@w1.fi>
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import logging
+logger = logging.getLogger()
+import os
+import subprocess
+import time
+
+from test_p2p_grpform import go_neg_pin_authorized
+from test_p2p_grpform import check_grpform_results
+from test_p2p_grpform import remove_group
+
+def set_country(country):
+    subprocess.call(['sudo', 'iw', 'reg', 'set', country])
+    time.sleep(0.1)
+
+def test_p2p_channel_5ghz(dev):
+    """P2P group formation with 5 GHz preference"""
+    try:
+        set_country("US")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq < 5000:
+            raise Exception("Unexpected channel %d MHz - did not follow 5 GHz preference" % freq)
+        remove_group(dev[0], dev[1])
+    finally:
+        set_country("00")
+
+def test_p2p_channel_5ghz_no_vht(dev):
+    """P2P group formation with 5 GHz preference when VHT channels are disallowed"""
+    try:
+        set_country("US")
+        dev[0].request("P2P_SET disallow_freq 5180-5240")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq < 5000:
+            raise Exception("Unexpected channel %d MHz - did not follow 5 GHz preference" % freq)
+        remove_group(dev[0], dev[1])
+    finally:
+        set_country("00")
+        dev[0].request("P2P_SET disallow_freq ")
+
+def test_p2p_channel_random_social(dev):
+    """P2P group formation with 5 GHz preference but all 5 GHz channels disabled"""
+    try:
+        set_country("US")
+        dev[0].request("SET p2p_oper_channel 11")
+        dev[0].request("P2P_SET disallow_freq 5000-6000,2462")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq not in [ 2412, 2437, 2462 ]:
+            raise Exception("Unexpected channel %d MHz - did not pick random social channel" % freq)
+        remove_group(dev[0], dev[1])
+    finally:
+        set_country("00")
+        dev[0].request("P2P_SET disallow_freq ")
+
+def test_p2p_channel_random(dev):
+    """P2P group formation with 5 GHz preference but all 5 GHz channels and all social channels disabled"""
+    try:
+        set_country("US")
+        dev[0].request("SET p2p_oper_channel 11")
+        dev[0].request("P2P_SET disallow_freq 5000-6000,2412,2437,2462")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq > 2500 or freq in [ 2412, 2437, 2462 ]:
+            raise Exception("Unexpected channel %d MHz" % freq)
+        remove_group(dev[0], dev[1])
+    finally:
+        set_country("00")
+        dev[0].request("P2P_SET disallow_freq ")
+
+def test_p2p_channel_random_social_with_op_class_change(dev, apdev, params):
+    """P2P group formation using random social channel with oper class change needed"""
+    try:
+        set_country("US")
+        logger.info("Start group on 5 GHz")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq < 5000:
+            raise Exception("Unexpected channel %d MHz - did not pick 5 GHz preference" % freq)
+        remove_group(dev[0], dev[1])
+
+        logger.info("Disable 5 GHz and try to re-start group based on 5 GHz preference")
+        dev[0].request("SET p2p_oper_reg_class 115")
+        dev[0].request("SET p2p_oper_channel 36")
+        dev[0].request("P2P_SET disallow_freq 5000-6000")
+        [i_res, r_res] = go_neg_pin_authorized(i_dev=dev[0], i_intent=15,
+                                               r_dev=dev[1], r_intent=0,
+                                               test_data=False)
+        check_grpform_results(i_res, r_res)
+        freq = int(i_res['freq'])
+        if freq not in [ 2412, 2437, 2462 ]:
+            raise Exception("Unexpected channel %d MHz - did not pick random social channel" % freq)
+        remove_group(dev[0], dev[1])
+
+        try:
+            arg = [ "tshark",
+                    "-r", os.path.join(params['logdir'], "hwsim0.pcapng"),
+                    "-R", "wifi_p2p.public_action.subtype == 0",
+                    "-V" ]
+            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:
+            last = None
+            for l in cmd.stdout.read().splitlines():
+                if "Operating Channel:" not in l:
+                    continue
+                last = l
+            if last is None:
+                raise Exception("Could not find GO Negotiation Request")
+            if "Operating Class 81" not in last:
+                raise Exception("Unexpected operating class: " + last.strip())
+    finally:
+        set_country("00")
+        dev[0].request("P2P_SET disallow_freq ")
+        dev[0].request("SET p2p_oper_reg_class 81")
+        dev[0].request("SET p2p_oper_channel 11")