tests: Add initial cfg80211 test

This adds some helper definitions and functions to allow cfg80211 to be
tested with raw nl80211 messages built in the test scripts. The first
test case shows a case where station disassociates instead of
deauthenticates (which is the wpa_supplicant behavior).

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

tests/hwsim/nl80211.py

@@ -0,0 +1,352 @@
+# nl80211 definitions
+# 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 binascii
+import struct
+
+nl80211_cmd = {
+    'GET_WIPHY': 1,
+    'SET_WIPHY': 2,
+    'NEW_WIPHY': 3,
+    'DEL_WIPHY': 4,
+    'GET_INTERFACE': 5,
+    'SET_INTERFACE': 6,
+    'NEW_INTERFACE': 7,
+    'DEL_INTERFACE': 8,
+    'GET_KEY': 9,
+    'SET_KEY': 10,
+    'NEW_KEY': 11,
+    'DEL_KEY': 12,
+    'GET_BEACON': 13,
+    'SET_BEACON': 14,
+    'START_AP': 15,
+    'STOP_AP': 16,
+    'GET_STATION': 17,
+    'SET_STATION': 18,
+    'NEW_STATION': 19,
+    'DEL_STATION': 20,
+    'GET_MPATH': 21,
+    'SET_MPATH': 22,
+    'NEW_MPATH': 23,
+    'DEL_MPATH': 24,
+    'SET_BSS': 25,
+    'SET_REG': 26,
+    'REQ_SET_REG': 27,
+    'GET_MESH_CONFIG': 28,
+    'SET_MESH_CONFIG': 29,
+    'SET_MGMT_EXTRA_IE[RESERVED]': 30,
+    'GET_REG': 31,
+    'GET_SCAN': 32,
+    'TRIGGER_SCAN': 33,
+    'NEW_SCAN_RESULTS': 34,
+    'SCAN_ABORTED': 35,
+    'REG_CHANGE': 36,
+    'AUTHENTICATE': 37,
+    'ASSOCIATE': 38,
+    'DEAUTHENTICATE': 39,
+    'DISASSOCIATE': 40,
+    'MICHAEL_MIC_FAILURE': 41,
+    'REG_BEACON_HINT': 42,
+    'JOIN_IBSS': 43,
+    'LEAVE_IBSS': 44,
+    'TESTMODE': 45,
+    'CONNECT': 46,
+    'ROAM': 47,
+    'DISCONNECT': 48,
+    'SET_WIPHY_NETNS': 49,
+    'GET_SURVEY': 50,
+    'NEW_SURVEY_RESULTS': 51,
+    'SET_PMKSA': 52,
+    'DEL_PMKSA': 53,
+    'FLUSH_PMKSA': 54,
+    'REMAIN_ON_CHANNEL': 55,
+    'CANCEL_REMAIN_ON_CHANNEL': 56,
+    'SET_TX_BITRATE_MASK': 57,
+    'REGISTER_FRAME': 58,
+    'FRAME': 59,
+    'FRAME_TX_STATUS': 60,
+    'SET_POWER_SAVE': 61,
+    'GET_POWER_SAVE': 62,
+    'SET_CQM': 63,
+    'NOTIFY_CQM': 64,
+    'SET_CHANNEL': 65,
+    'SET_WDS_PEER': 66,
+    'FRAME_WAIT_CANCEL': 67,
+    'JOIN_MESH': 68,
+    'LEAVE_MESH': 69,
+    'UNPROT_DEAUTHENTICATE': 70,
+    'UNPROT_DISASSOCIATE': 71,
+    'NEW_PEER_CANDIDATE': 72,
+    'GET_WOWLAN': 73,
+    'SET_WOWLAN': 74,
+    'START_SCHED_SCAN': 75,
+    'STOP_SCHED_SCAN': 76,
+    'SCHED_SCAN_RESULTS': 77,
+    'SCHED_SCAN_STOPPED': 78,
+    'SET_REKEY_OFFLOAD': 79,
+    'PMKSA_CANDIDATE': 80,
+    'TDLS_OPER': 81,
+    'TDLS_MGMT': 82,
+    'UNEXPECTED_FRAME': 83,
+    'PROBE_CLIENT': 84,
+    'REGISTER_BEACONS': 85,
+    'UNEXPECTED_4ADDR_FRAME': 86,
+    'SET_NOACK_MAP': 87,
+    'CH_SWITCH_NOTIFY': 88,
+    'START_P2P_DEVICE': 89,
+    'STOP_P2P_DEVICE': 90,
+    'CONN_FAILED': 91,
+    'SET_MCAST_RATE': 92,
+    'SET_MAC_ACL': 93,
+    'RADAR_DETECT': 94,
+    'GET_PROTOCOL_FEATURES': 95,
+    'UPDATE_FT_IES': 96,
+    'FT_EVENT': 97,
+    'CRIT_PROTOCOL_START': 98,
+    'CRIT_PROTOCOL_STOP': 99,
+    'GET_COALESCE': 100,
+    'SET_COALESCE': 101,
+    'CHANNEL_SWITCH': 102,
+    'VENDOR': 103,
+    'SET_QOS_MAP': 104,
+}
+
+nl80211_attr = {
+    'WIPHY': 1,
+    'WIPHY_NAME': 2,
+    'IFINDEX': 3,
+    'IFNAME': 4,
+    'IFTYPE': 5,
+    'MAC': 6,
+    'KEY_DATA': 7,
+    'KEY_IDX': 8,
+    'KEY_CIPHER': 9,
+    'KEY_SEQ': 10,
+    'KEY_DEFAULT': 11,
+    'BEACON_INTERVAL': 12,
+    'DTIM_PERIOD': 13,
+    'BEACON_HEAD': 14,
+    'BEACON_TAIL': 15,
+    'STA_AID': 16,
+    'STA_FLAGS': 17,
+    'STA_LISTEN_INTERVAL': 18,
+    'STA_SUPPORTED_RATES': 19,
+    'STA_VLAN': 20,
+    'STA_INFO': 21,
+    'WIPHY_BANDS': 22,
+    'MNTR_FLAGS': 23,
+    'MESH_ID': 24,
+    'STA_PLINK_ACTION': 25,
+    'MPATH_NEXT_HOP': 26,
+    'MPATH_INFO': 27,
+    'BSS_CTS_PROT': 28,
+    'BSS_SHORT_PREAMBLE': 29,
+    'BSS_SHORT_SLOT_TIME': 30,
+    'HT_CAPABILITY': 31,
+    'SUPPORTED_IFTYPES': 32,
+    'REG_ALPHA2': 33,
+    'REG_RULES': 34,
+    'MESH_CONFIG': 35,
+    'BSS_BASIC_RATES': 36,
+    'WIPHY_TXQ_PARAMS': 37,
+    'WIPHY_FREQ': 38,
+    'WIPHY_CHANNEL_TYPE': 39,
+    'KEY_DEFAULT_MGMT': 40,
+    'MGMT_SUBTYPE': 41,
+    'IE': 42,
+    'MAX_NUM_SCAN_SSIDS': 43,
+    'SCAN_FREQUENCIES': 44,
+    'SCAN_SSIDS': 45,
+    'GENERATION': 46,
+    'BSS': 47,
+    'REG_INITIATOR': 48,
+    'REG_TYPE': 49,
+    'SUPPORTED_COMMANDS': 50,
+    'FRAME': 51,
+    'SSID': 52,
+    'AUTH_TYPE': 53,
+    'REASON_CODE': 54,
+    'KEY_TYPE': 55,
+    'MAX_SCAN_IE_LEN': 56,
+    'CIPHER_SUITES': 57,
+    'FREQ_BEFORE': 58,
+    'FREQ_AFTER': 59,
+    'FREQ_FIXED': 60,
+    'WIPHY_RETRY_SHORT': 61,
+    'WIPHY_RETRY_LONG': 62,
+    'WIPHY_FRAG_THRESHOLD': 63,
+    'WIPHY_RTS_THRESHOLD': 64,
+    'TIMED_OUT': 65,
+    'USE_MFP': 66,
+    'STA_FLAGS2': 67,
+    'CONTROL_PORT': 68,
+    'TESTDATA': 69,
+    'PRIVACY': 70,
+    'DISCONNECTED_BY_AP': 71,
+    'STATUS_CODE': 72,
+    'CIPHER_SUITES_PAIRWISE': 73,
+    'CIPHER_SUITE_GROUP': 74,
+    'WPA_VERSIONS': 75,
+    'AKM_SUITES': 76,
+    'REQ_IE': 77,
+    'RESP_IE': 78,
+    'PREV_BSSID': 79,
+    'KEY': 80,
+    'KEYS': 81,
+    'PID': 82,
+    '4ADDR': 83,
+    'SURVEY_INFO': 84,
+    'PMKID': 85,
+    'MAX_NUM_PMKIDS': 86,
+    'DURATION': 87,
+    'COOKIE': 88,
+    'WIPHY_COVERAGE_CLASS': 89,
+    'TX_RATES': 90,
+    'FRAME_MATCH': 91,
+    'ACK': 92,
+    'PS_STATE': 93,
+    'CQM': 94,
+    'LOCAL_STATE_CHANGE': 95,
+    'AP_ISOLATE': 96,
+    'WIPHY_TX_POWER_SETTING': 97,
+    'WIPHY_TX_POWER_LEVEL': 98,
+    'TX_FRAME_TYPES': 99,
+    'RX_FRAME_TYPES': 100,
+    'FRAME_TYPE': 101,
+    'CONTROL_PORT_ETHERTYPE': 102,
+    'CONTROL_PORT_NO_ENCRYPT': 103,
+    'SUPPORT_IBSS_RSN': 104,
+    'WIPHY_ANTENNA_TX': 105,
+    'WIPHY_ANTENNA_RX': 106,
+    'MCAST_RATE': 107,
+    'OFFCHANNEL_TX_OK': 108,
+    'BSS_HT_OPMODE': 109,
+    'KEY_DEFAULT_TYPES': 110,
+    'MAX_REMAIN_ON_CHANNEL_DURATION': 111,
+    'MESH_SETUP': 112,
+    'WIPHY_ANTENNA_AVAIL_TX': 113,
+    'WIPHY_ANTENNA_AVAIL_RX': 114,
+    'SUPPORT_MESH_AUTH': 115,
+    'STA_PLINK_STATE': 116,
+    'WOWLAN_TRIGGERS': 117,
+    'WOWLAN_TRIGGERS_SUPPORTED': 118,
+    'SCHED_SCAN_INTERVAL': 119,
+    'INTERFACE_COMBINATIONS': 120,
+    'SOFTWARE_IFTYPES': 121,
+    'REKEY_DATA': 122,
+    'MAX_NUM_SCHED_SCAN_SSIDS': 123,
+    'MAX_SCHED_SCAN_IE_LEN': 124,
+    'SCAN_SUPP_RATES': 125,
+    'HIDDEN_SSID': 126,
+    'IE_PROBE_RESP': 127,
+    'IE_ASSOC_RESP': 128,
+    'STA_WME': 129,
+    'SUPPORT_AP_UAPSD': 130,
+    'ROAM_SUPPORT': 131,
+    'SCHED_SCAN_MATCH': 132,
+    'MAX_MATCH_SETS': 133,
+    'PMKSA_CANDIDATE': 134,
+    'TX_NO_CCK_RATE': 135,
+    'TDLS_ACTION': 136,
+    'TDLS_DIALOG_TOKEN': 137,
+    'TDLS_OPERATION': 138,
+    'TDLS_SUPPORT': 139,
+    'TDLS_EXTERNAL_SETUP': 140,
+    'DEVICE_AP_SME': 141,
+    'DONT_WAIT_FOR_ACK': 142,
+    'FEATURE_FLAGS': 143,
+    'PROBE_RESP_OFFLOAD': 144,
+    'PROBE_RESP': 145,
+    'DFS_REGION': 146,
+    'DISABLE_HT': 147,
+    'HT_CAPABILITY_MASK': 148,
+    'NOACK_MAP': 149,
+    'INACTIVITY_TIMEOUT': 150,
+    'RX_SIGNAL_DBM': 151,
+    'BG_SCAN_PERIOD': 152,
+    'WDEV': 153,
+    'USER_REG_HINT_TYPE': 154,
+    'CONN_FAILED_REASON': 155,
+    'SAE_DATA': 156,
+    'VHT_CAPABILITY': 157,
+    'SCAN_FLAGS': 158,
+    'CHANNEL_WIDTH': 159,
+    'CENTER_FREQ1': 160,
+    'CENTER_FREQ2': 161,
+    'P2P_CTWINDOW': 162,
+    'P2P_OPPPS': 163,
+    'LOCAL_MESH_POWER_MODE': 164,
+    'ACL_POLICY': 165,
+    'MAC_ADDRS': 166,
+    'MAC_ACL_MAX': 167,
+    'RADAR_EVENT': 168,
+    'EXT_CAPA': 169,
+    'EXT_CAPA_MASK': 170,
+    'STA_CAPABILITY': 171,
+    'STA_EXT_CAPABILITY': 172,
+    'PROTOCOL_FEATURES': 173,
+    'SPLIT_WIPHY_DUMP': 174,
+    'DISABLE_VHT': 175,
+    'VHT_CAPABILITY_MASK': 176,
+    'MDID': 177,
+    'IE_RIC': 178,
+    'CRIT_PROT_ID': 179,
+    'MAX_CRIT_PROT_DURATION': 180,
+    'PEER_AID': 181,
+    'COALESCE_RULE': 182,
+    'CH_SWITCH_COUNT': 183,
+    'CH_SWITCH_BLOCK_TX': 184,
+    'CSA_IES': 185,
+    'CSA_C_OFF_BEACON': 186,
+    'CSA_C_OFF_PRESP': 187,
+    'RXMGMT_FLAGS': 188,
+    'STA_SUPPORTED_CHANNELS': 189,
+    'STA_SUPPORTED_OPER_CLASSES': 190,
+    'HANDLE_DFS': 191,
+    'SUPPORT_5_MHZ': 192,
+    'SUPPORT_10_MHZ': 193,
+    'OPMODE_NOTIF': 194,
+    'VENDOR_ID': 195,
+    'VENDOR_SUBCMD': 196,
+    'VENDOR_DATA': 197,
+    'VENDOR_EVENTS': 198,
+    'QOS_MAP': 199,
+    'MAC_HINT': 200,
+    'WIPHY_FREQ_HINT': 201,
+    'MAX_AP_ASSOC_STA': 202,
+}
+
+def build_nl80211_attr(id, val):
+    return struct.pack("@HH", 4 + len(val), nl80211_attr[id]) + val
+
+def build_nl80211_attr_u32(id, val):
+    return build_nl80211_attr(id, struct.pack("@I", val))
+
+def build_nl80211_attr_u16(id, val):
+    return build_nl80211_attr(id, struct.pack("@HH", val, 0))
+
+def build_nl80211_attr_flag(id):
+    return build_nl80211_attr(id, '')
+
+def build_nl80211_attr_mac(id, val):
+    addr = struct.unpack('6B', binascii.unhexlify(val.replace(':','')))
+    t = addr + (0, 0)
+    aval = struct.pack('<6BBB', *t)
+    return build_nl80211_attr(id, aval)
+
+def parse_nl80211_attrs(msg):
+    attrs = {}
+    while len(msg) >= 4:
+        alen,attr = struct.unpack("@HH", msg[0:4])
+        if alen < 4:
+            raise Exception("Too short nl80211 attribute")
+        alen -= 4;
+        msg = msg[4:]
+        if alen > len(msg):
+            raise Exception("nl80211 attribute underflow")
+        attrs[attr] = msg[0:alen]
+        msg = msg[alen:]
+    return attrs

tests/hwsim/test_cfg80211.py

@@ -0,0 +1,35 @@
+# cfg80211 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 binascii
+
+import hostapd
+from nl80211 import *
+
+def nl80211_command(dev, cmd, attr):
+    res = dev.request("VENDOR ffffffff {} {}".format(nl80211_cmd[cmd],
+                                                     binascii.hexlify(attr)))
+    if "FAIL" in res:
+        raise Exception("nl80211 command failed")
+    return binascii.unhexlify(res)
+
+def test_cfg80211_disassociate(dev, apdev):
+    """cfg80211 disassociation command"""
+    hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": "open" })
+    dev[0].connect("open", key_mgmt="NONE", scan_freq="2412")
+    ev = hapd.wait_event([ "AP-STA-CONNECTED" ], timeout=5)
+    if ev is None:
+        raise Exception("No connection event received from hostapd")
+
+    ifindex = int(dev[0].get_driver_status_field("ifindex"))
+    attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
+    attrs += build_nl80211_attr_u16('REASON_CODE', 1)
+    attrs += build_nl80211_attr_mac('MAC', apdev[0]['bssid'])
+    nl80211_command(dev[0], 'DISASSOCIATE', attrs)
+
+    ev = hapd.wait_event([ "AP-STA-DISCONNECTED" ], timeout=5)
+    if ev is None:
+        raise Exception("No disconnection event received from hostapd")