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android / platform / hardware / ti / wlan / cece92a8acff0a81868e6cac326bcf61e54c5aec / . / wl1271 / stad / src / Connection_Managment / apConn.c
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/*
* apConn.c
*
* Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Texas Instruments nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** \file apConn.c
* \brief AP Connection
*
* \see apConn.h
*/
/****************************************************************************
* *
* MODULE: AP Connection *
* PURPOSE: *
* Roaming ability of eSTA is implemented by Roaming Manager Component and
* described in "Roaming Manager module LLD" document, and by
* AP Connection module. AP Connection module implemented as two sub-modules:
* The major one is AP Connection, that is responsible for:
* - providing Roaming Manager with access to other parts of WLAN Driver,
* - implementing low levels of roaming mechanism.
* Current BSS sub-module takes care of:
* - maintaining database of current AP info,
* - providing access to database of current AP info.
* *
****************************************************************************/
#define __FILE_ID__ FILE_ID_21
#include "osApi.h"
#include "report.h"
#include "sme.h"
#include "siteMgrApi.h"
#include "smeApi.h"
#include "PowerMgr_API.h"
#include "TrafficMonitorAPI.h"
#include "qosMngr_API.h"
#ifdef XCC_MODULE_INCLUDED
#include "XCCMngr.h"
#endif
#include "measurementMgrApi.h"
#include "connApi.h"
#include "EvHandler.h"
#include "apConn.h"
#include "currBss.h"
#include "fsm.h"
#include "scrApi.h"
#include "regulatoryDomainApi.h"
#include "TWDriver.h"
#include "DrvMainModules.h"
#include "GenSM.h"
/*----------------------*/
/* Constants and macros */
/*----------------------*/
#ifdef TI_DBG
#define AP_CONN_VALIDATE_HANDLE(hAPConnection) \
if (hAPConnection == NULL) \
{ \
WLAN_OS_REPORT(("FATAL ERROR: AP Connection context is not initiated\n")); \
return TI_NOK; \
}
#else
#define AP_CONN_VALIDATE_HANDLE(hAPConnection)
#endif
#define MAX_ROAMING_TRIGGERS ROAMING_TRIGGER_LAST
#define UPDATE_SEND_DEAUTH_PACKET_FLAG(roamingEventType) \
if ((roamingEventType >= ROAMING_TRIGGER_MAX_TX_RETRIES) && \
(roamingEventType != ROAMING_TRIGGER_SECURITY_ATTACK)) \
{ \
pAPConnection->sendDeauthPacket = TI_FALSE; \
}
/* Init bits */
/*--------------*/
/* Enumerations */
/*--------------*/
/**
* AP Connection state machine states
*/
typedef enum
{
AP_CONNECT_STATE_IDLE = 0, /**< Initial state */
AP_CONNECT_STATE_WAIT_ROAM, /**< Connected to AP, waiting for start roaming command */
AP_CONNECT_STATE_SWITCHING_CHANNEL, /**< Connected to AP, switch channel in progress */
AP_CONNECT_STATE_WAIT_CONNECT_CMD, /**< SCR allocated, PS mode entered; wait for cmd from Roam Mngr */
AP_CONNECT_STATE_PREPARE_HAND_OFF, /**< Request CCKM for new AP, wait for response */
AP_CONNECT_STATE_CONNECTING, /**< Performing Connection to new AP; wait for response from Conn SM */
AP_CONNECT_STATE_DISCONNECTING, /**< Wait for completion of current link disconnection */
AP_CONNECT_STATE_REESTABLISH_VOICE, /**< Wait for completion of voice TSPEC re-negotiation */
AP_CONNECT_STATE_LAST
} apConn_smStates;
/**
* AP Connection state machine events
*/
typedef enum
{
AP_CONNECT_EVENT_PREPARE_FOR_ROAMING= 0,/**< Sent by Roam MNGR when roaming event occurs */
AP_CONNECT_EVENT_FINISHED_OK, /**< Indicates successful completion of request sent to Conn SM */
AP_CONNECT_EVENT_FINISHED_NOT_OK, /**< Indicates unsuccessful completion of request sent to Conn SM */
AP_CONNECT_EVENT_RETAIN_CURRENT_AP, /**< Sent by Roam MNGR when it wishes to give-up roaming */
AP_CONNECT_EVENT_START, /**< Sent by SME when first time link to AP is established */
AP_CONNECT_EVENT_START_ROAM, /**< Sent by Roam MNGR when it wishes to roam to new AP */
AP_CONNECT_EVENT_START_SWITCH_CHANNEL, /**< Sent by Switch channel module when starting switch channel process (tx enabled) */
AP_CONNECT_EVENT_FINISHED_SWITCH_CH, /**< Sent by Switch channel module when finishing switch channel process (tx enabled) */
AP_CONNECT_EVENT_FINISHED_HAND_OVER, /**< Sent by XCC module when finishing hand-over */
AP_CONNECT_EVENT_STOP, /**< Disconnect current link, send stop indication to other modules */
AP_CONNECT_EVENT_LAST
} apConn_smEvents;
#define AP_CONNECT_NUM_STATES AP_CONNECT_STATE_LAST
#define AP_CONNECT_NUM_EVENTS AP_CONNECT_EVENT_LAST
/*----------*/
/* Typedefs */
/*----------*/
/*------------*/
/* Structures */
/*------------*/
/**
* AP Connection control block
* Following structure defines parameters that can be configured externally,
* internal variables, AP Connection state machine and handlers of other modules
* used by AP Connection module
*/
typedef struct _apConn_t
{
/* AP Connection state machine */
TI_UINT8 currentState; /**< AP Connection state machine current state */
/* Internal parameters */
TI_BOOL firstAttempt2Roam; /**< TI_TRUE if still connected to original AP, TI_FALSE otherwise */
TI_BOOL roamingEnabled; /**< If TI_FALSE, act like if no roaming callback registered. */
apConn_roamingTrigger_e roamReason; /**< The most severe and recent reason for roaming */
APDisconnect_t APDisconnect; /**< The AP disconnect trigger extra information */
bssEntry_t *newAP; /**< Stores parameters of roaming candidate */
apConn_connRequest_e requestType; /**< Stores type of roaming request */
TI_INT8 rssiThreshold; /**< Stores recently configured RSSI threshold */
TI_UINT8 snrThreshold; /**< Stores recently configured SNR threshold */
TI_UINT8 txFailureThreshold; /**< Stores recently configured consec. no ack threshold */
TI_UINT8 lowRateThreshold; /**< Stores recently configured consec. no ack threshold */
TI_UINT32 vsIElength; /**< Length of vendor specific info-element for assoc req (if defined) */
char *vsIEbuf; /**< Pointer to vendor specific info-element for assoc req (if defined) */
TI_BOOL isRssiTriggerMaskedOut;
TI_BOOL isSnrTriggerMaskedOut;
TI_BOOL isConsTxFailureMaskedOut;
TI_BOOL islowRateTriggerMaskedOut;
TI_BOOL removeKeys; /**< Indicates whether keys should be removed after disconnect or not */
TI_BOOL ignoreDeauthReason0;/**< Indicates whether to ignore DeAuth with reason 0, required for Rogue AP test XCC-V2 */
TI_BOOL sendDeauthPacket; /**< Indicates whether to send DEAUTH packet when discommecting or not */
TI_UINT8 deauthPacketReasonCode; /**< Indicates what error code to indicate in the DEAUTH packet */
TI_BOOL voiceTspecConfigured;/**< Shall be set to TI_TRUE before roaming in case the TSPEC is configured */
TI_BOOL videoTspecConfigured;/**< Shall be set to TRUE before roaming in case the TSPEC is configured */
TI_BOOL reNegotiateTSPEC; /**< Shall be set to TI_TRUE before hand-over if requested by Roaming Manager */
TI_BOOL resetReportedRoamingStatistics; /**< Shall be set to TI_TRUE if starting to measure traffic */
TI_UINT16 lastRoamingDelay;
TI_UINT32 roamingStartedTimestamp;
TI_UINT8 roamingSuccesfulHandoverNum;
TI_BOOL bNonRoamingDisAssocReason; /**< Indicate whether last disconnection was called from outside (SME) */
/** Callback functions, registered by Roaming manager */
apConn_roamMngrEventCallb_t roamEventCallb; /**< roam event triggers */
apConn_roamMngrCallb_t reportStatusCallb; /**< connection status events */
apConn_roamMngrCallb_t returnNeighborApsCallb; /**< neighbor APs list update */
/* Handlers of other modules used by AP Connection */
TI_HANDLE hOs;
TI_HANDLE hReport;
TI_HANDLE hCurrBSS;
TI_HANDLE hRoamMng;
TI_HANDLE hSme;
TI_HANDLE hSiteMgr;
TI_HANDLE hXCCMngr;
TI_HANDLE hConnSm;
TI_HANDLE hPrivacy;
TI_HANDLE hQos;
TI_HANDLE hEvHandler;
TI_HANDLE hScr;
TI_HANDLE hAssoc;
TI_HANDLE hRegulatoryDomain;
TI_HANDLE hMlme;
/* Counters for statistics */
TI_UINT32 roamingTriggerEvents[MAX_ROAMING_TRIGGERS];
TI_UINT32 roamingSuccesfulHandoverTotalNum;
TI_UINT32 roamingFailedHandoverNum;
TI_UINT32 retainCurrAPNum;
TI_UINT32 disconnectFromRoamMngrNum;
TI_UINT32 stopFromSmeNum;
TI_HANDLE hAPConnSM;
apConn_roamingTrigger_e assocRoamingTrigger;
} apConn_t;
/*-------------------------------*/
/* Internal functions prototypes */
/*-------------------------------*/
/* SM functions */
static TI_STATUS apConn_smEvent(TI_UINT8 *currState, TI_UINT8 event, void* data);
static void apConn_smNop(void *pData);
static void apConn_smUnexpected(void *pData);
static void apConn_smStartWaitingForTriggers(void *pData);
static void apConn_smConnectedToNewAP(void *pData);
static void apConn_smConfigureDriverBeforeRoaming(void *pData);
static void apConn_smStopConnection(void *pData);
static void apConn_smInvokeConnectionToNewAp(void *pData);
static void apConn_smReportDisconnected(void *pData);
static void apConn_smRetainAP(void *pData);
static void apConn_smRequestCCKM(void *pData);
static void apConn_smReportConnFail(void *pData);
static void apConn_smSwChFinished(void *pData);
static void apConn_smHandleTspecReneg (void *pData);
/* other functions */
#ifdef XCC_MODULE_INCLUDED
static void apConn_calcNewTsf(apConn_t *hAPConnection, TI_UINT8 *tsfTimeStamp, TI_UINT32 newSiteOsTimeStamp, TI_UINT32 beaconInterval);
#endif
static TI_STATUS apConn_qosMngrReportResultCallb (TI_HANDLE hApConn, trafficAdmRequestStatus_e result);
static void apConn_reportConnStatusToSME (apConn_t *pAPConnection);
/*-------------------------------*/
/* Public functions prototypes */
/*-------------------------------*/
/**
*
* apConn_create
*
* \b Description:
*
* Create the AP Connection context:
* allocate memory for internal variables;
* create state machine.
*
* \b ARGS:
*
* I - hOs - OS handler
*
* \b RETURNS:
*
* Pointer to the AP Connection on success, NULL on failure
* (unable to allocate memory or other error).
*
* \sa
*/
TI_HANDLE apConn_create(TI_HANDLE hOs)
{
apConn_t *pAPConnection;
if ((pAPConnection = os_memoryAlloc(hOs, sizeof(apConn_t))) != NULL)
{
pAPConnection->hOs = hOs;
/* allocate the state machine object */
pAPConnection->hAPConnSM = genSM_Create(hOs);
if (pAPConnection->hAPConnSM == NULL)
{
WLAN_OS_REPORT(("FATAL ERROR: apConn_create(): Error allocating Connection StateMachine! - aborting\n"));
return NULL;
}
/* Succeeded to create AP Connection module context - return pointer to it */
return pAPConnection;
}
else /* Failed to allocate control block */
{
WLAN_OS_REPORT(("FATAL ERROR: apConn_create(): Error allocating cb - aborting\n"));
os_memoryFree(hOs, pAPConnection, sizeof(apConn_t));
return NULL;
}
}
/**
*
* apConn_unload
*
* \b Description:
*
* Finish AP Connection module work:
* release the allocation for state machine and internal variables.
*
* \b ARGS:
*
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_unload(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection;
AP_CONN_VALIDATE_HANDLE (hAPConnection);
pAPConnection = (apConn_t *)hAPConnection;
/* Unload state machine */
genSM_Unload(pAPConnection->hAPConnSM);
/* Free pre-allocated control block */
os_memoryFree (pAPConnection->hOs, pAPConnection, sizeof(apConn_t));
return TI_OK;
}
static TGenSM_actionCell apConnSM_matrix[AP_CONNECT_NUM_STATES][AP_CONNECT_NUM_EVENTS] =
{
/* next state and actions for IDLE state */
{ {AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* FINISHED_OK */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_WAIT_ROAM,apConn_smStartWaitingForTriggers}, /* START */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_IDLE, apConn_smNop}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_IDLE, apConn_smNop}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_IDLE, apConn_smUnexpected} /* STOP */
},
/* next state and actions for WAIT_ROAM state */
{ {AP_CONNECT_STATE_WAIT_CONNECT_CMD,apConn_smConfigureDriverBeforeRoaming},/* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* FINISHED_OK */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smNop}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smUnexpected}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
},
/* next state and actions for SWITCHING_CHANNEL state */
{ {AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* FINISHED_OK */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smSwChFinished},/* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smNop}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_SWITCHING_CHANNEL, apConn_smUnexpected}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
},
/* next state and actions for WAIT_CONNECT_CMD state */
{ {AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* FINISHED_OK */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_WAIT_ROAM, apConn_smRetainAP}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smRequestCCKM}, /* START_ROAM */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smUnexpected}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
},
/* next state and actions for PREPARE_HAND_OFF state */
{ {AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* FINISHED_OK */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_PREPARE_HAND_OFF, apConn_smUnexpected}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_CONNECTING, apConn_smInvokeConnectionToNewAp},/* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
},
/* next state and actions for CONNECTING state */
{ {AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_REESTABLISH_VOICE,apConn_smHandleTspecReneg}, /* FINISHED_OK */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smReportConnFail}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_CONNECTING, apConn_smUnexpected}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
},
/* next state and actions for DISCONNECTING state */
{ {AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_IDLE, apConn_smReportDisconnected}, /* FINISHED_OK */
{AP_CONNECT_STATE_IDLE, apConn_smReportDisconnected}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* START_ROAM */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smNop}, /* STOP */
},
/* next state and actions for REESTABLISH_VOICE state */
{ {AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* PREPARE_FOR_ROAMING */
{AP_CONNECT_STATE_WAIT_ROAM,apConn_smConnectedToNewAP}, /* FINISHED_OK */
{AP_CONNECT_STATE_WAIT_CONNECT_CMD, apConn_smReportConnFail}, /* FINISHED_NOT_OK */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* RETAIN_CURRENT_AP */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* START */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* START_ROAM */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* START_SWITCH_CHANNEL */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* FINISHED_SWITCH_CH */
{AP_CONNECT_STATE_REESTABLISH_VOICE, apConn_smUnexpected}, /* FINISHED_HAND_OVER */
{AP_CONNECT_STATE_DISCONNECTING, apConn_smStopConnection} /* STOP */
}
};
/**
*
* apConn_init
*
* \b Description:
*
* Prepare AP Connection module to work: initiate internal variables, start state machine
*
* \b ARGS:
*
* I - pStadHandles - The driver modules handles \n
*
* \b RETURNS:
*
* void
*
* \sa
*/
void apConn_init (TStadHandlesList *pStadHandles)
{
apConn_t *pAPConnection = (apConn_t *)(pStadHandles->hAPConnection);
pAPConnection->hReport = pStadHandles->hReport;
pAPConnection->hCurrBSS = pStadHandles->hCurrBss;
pAPConnection->hRoamMng = pStadHandles->hRoamingMngr;
pAPConnection->hSme = pStadHandles->hSme;
pAPConnection->hSiteMgr = pStadHandles->hSiteMgr;
pAPConnection->hXCCMngr = pStadHandles->hXCCMngr;
pAPConnection->hConnSm = pStadHandles->hConn;
pAPConnection->hPrivacy = pStadHandles->hRsn;
pAPConnection->hQos = pStadHandles->hQosMngr;
pAPConnection->hEvHandler = pStadHandles->hEvHandler;
pAPConnection->hScr = pStadHandles->hSCR;
pAPConnection->hAssoc = pStadHandles->hAssoc;
pAPConnection->hMlme = pStadHandles->hMlmeSm;
pAPConnection->hRegulatoryDomain = pStadHandles->hRegulatoryDomain;
pAPConnection->currentState = AP_CONNECT_STATE_IDLE;
pAPConnection->firstAttempt2Roam = TI_TRUE;
pAPConnection->roamingEnabled = TI_TRUE;
pAPConnection->reportStatusCallb = NULL;
pAPConnection->roamEventCallb = NULL;
pAPConnection->returnNeighborApsCallb = NULL;
pAPConnection->assocRoamingTrigger = ROAMING_TRIGGER_NONE;
genSM_Init(pAPConnection->hAPConnSM, pAPConnection->hReport);
}
TI_STATUS apConn_SetDefaults (TI_HANDLE hAPConnection, apConnParams_t *pApConnParams)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
TI_UINT32 index;
pAPConnection->ignoreDeauthReason0 = pApConnParams->ignoreDeauthReason0;
for (index=ROAMING_TRIGGER_NONE; index<ROAMING_TRIGGER_LAST; index++)
{
pAPConnection->roamingTriggerEvents[index] = 0;
}
pAPConnection->roamingSuccesfulHandoverNum = 0;
pAPConnection->roamingSuccesfulHandoverTotalNum = 0;
pAPConnection->roamingFailedHandoverNum = 0;
pAPConnection->retainCurrAPNum = 0;
pAPConnection->disconnectFromRoamMngrNum = 0;
pAPConnection->stopFromSmeNum = 0;
pAPConnection->txFailureThreshold = NO_ACK_DEFAULT_THRESHOLD;
pAPConnection->lowRateThreshold = LOW_RATE_DEFAULT_THRESHOLD;
pAPConnection->rssiThreshold = RSSI_DEFAULT_THRESHOLD;
pAPConnection->snrThreshold = SNR_DEFAULT_THRESHOLD;
pAPConnection->vsIElength = 0;
pAPConnection->isRssiTriggerMaskedOut = TI_FALSE;
pAPConnection->isSnrTriggerMaskedOut = TI_TRUE;
pAPConnection->islowRateTriggerMaskedOut = TI_FALSE;
pAPConnection->isConsTxFailureMaskedOut = TI_FALSE;
pAPConnection->removeKeys = TI_TRUE;
pAPConnection->sendDeauthPacket = TI_TRUE; /* Default behavior is radio On - send DISASSOC frame */
pAPConnection->deauthPacketReasonCode = STATUS_UNSPECIFIED;
pAPConnection->voiceTspecConfigured = TI_FALSE;
pAPConnection->videoTspecConfigured = TI_FALSE;
pAPConnection->resetReportedRoamingStatistics = TI_FALSE;
pAPConnection->reNegotiateTSPEC = TI_FALSE;
pAPConnection->bNonRoamingDisAssocReason = TI_FALSE;
pAPConnection->roamingStartedTimestamp = 0;
pAPConnection->lastRoamingDelay = 0;
pAPConnection->roamingSuccesfulHandoverNum = 0;
genSM_SetDefaults(pAPConnection->hAPConnSM,
AP_CONNECT_NUM_STATES,
AP_CONNECT_NUM_EVENTS,
&apConnSM_matrix[0][0],
AP_CONNECT_STATE_IDLE,
"AP Connection SM",
NULL,
NULL,
__FILE_ID__);
return TI_OK;
}
/* apConn_isPsRequiredBeforeScan
*
* \b Description:
*
* verify if the PS required before scan according if roaming triger is part of ROAMING_TRIGGER_LOW_QUALITY_GROUP
*
* \b ARGS:
*
* I - hAPConnection - pointer to module\n
*
* \b RETURNS:
*
* TRUE or FALSE.
*
* \sa
*/
TI_BOOL apConn_isPsRequiredBeforeScan(TI_HANDLE hAPConnection)
{
apConn_t * pAPConnection = (apConn_t *) hAPConnection;
/* check if part of ROAMING_TRIGGER_LOW_QUALITY_GROUP */
if (pAPConnection->roamReason <= ROAMING_TRIGGER_MAX_TX_RETRIES)
return TI_TRUE;
else
return TI_FALSE;
}
/**
*
* apConn_ConnCompleteInd
*
* \b Description:
*
* Inform AP Connection about successful / unsuccessful completion
* of link establishing
*
* \b ARGS:
*
* I - result - TI_OK if successfully connected, TI_NOK otherwise \n
*
* \b RETURNS:
*
* None.
*
* \sa
*/
void apConn_ConnCompleteInd(TI_HANDLE hAPConnection, mgmtStatus_e status, TI_UINT32 uStatusCode)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
if (status == STATUS_SUCCESSFUL)
{
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_OK, pAPConnection);
}
else
{
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_NOT_OK, pAPConnection);
}
}
TI_STATUS apConn_getRoamThresholds(TI_HANDLE hAPConnection, roamingMngrThresholdsConfig_t *pParam)
{
apConn_t * pAPConnection = (apConn_t *) hAPConnection;
pParam->lowRssiThreshold = pAPConnection->rssiThreshold;
pParam->lowSnrThreshold = pAPConnection->snrThreshold;
pParam->txRateThreshold = pAPConnection->lowRateThreshold;
pParam->dataRetryThreshold = pAPConnection->txFailureThreshold;
currBSS_getRoamingParams(pAPConnection->hCurrBSS,
&pParam->numExpectedTbttForBSSLoss,
&pParam->lowQualityForBackgroungScanCondition,
&pParam->normalQualityForBackgroungScanCondition);
return TI_OK;
}
TI_STATUS apConn_setRoamThresholds(TI_HANDLE hAPConnection, roamingMngrThresholdsConfig_t *pParam)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
/* If low quality trigger threshold is set to 0 - this is the request to ignore this trigger */
/* Otherwise store it */
if (pParam->lowRssiThreshold == (TI_INT8)AP_CONNECT_TRIGGER_IGNORED)
{
pAPConnection->isRssiTriggerMaskedOut = TI_TRUE;
pParam->lowRssiThreshold = pAPConnection->rssiThreshold;
}
else
{
pAPConnection->isRssiTriggerMaskedOut = TI_FALSE;
pAPConnection->rssiThreshold = pParam->lowRssiThreshold;
}
if (pParam->txRateThreshold == AP_CONNECT_TRIGGER_IGNORED)
{
pAPConnection->islowRateTriggerMaskedOut = TI_TRUE;
pParam->txRateThreshold = pAPConnection->lowRateThreshold;
}
else
{
pAPConnection->islowRateTriggerMaskedOut = TI_FALSE;
pAPConnection->lowRateThreshold = pParam->txRateThreshold;
}
if (pParam->dataRetryThreshold == AP_CONNECT_TRIGGER_IGNORED)
{
pAPConnection->isConsTxFailureMaskedOut = TI_TRUE;
pParam->dataRetryThreshold = pAPConnection->txFailureThreshold;
}
else
{
pAPConnection->isConsTxFailureMaskedOut = TI_FALSE;
pAPConnection->txFailureThreshold = pParam->dataRetryThreshold;
}
pAPConnection->isSnrTriggerMaskedOut = TI_FALSE;
pAPConnection->snrThreshold = pParam->lowSnrThreshold;
currBSS_updateRoamingTriggers(pAPConnection->hCurrBSS, pParam);
return TI_OK;
}
TI_STATUS apConn_registerRoamMngrCallb(TI_HANDLE hAPConnection,
apConn_roamMngrEventCallb_t roamEventCallb,
apConn_roamMngrCallb_t reportStatusCallb,
apConn_roamMngrCallb_t returnNeighborApsCallb)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
paramInfo_t param;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection = (apConn_t *)hAPConnection;
pAPConnection->roamEventCallb = roamEventCallb;
pAPConnection->reportStatusCallb = reportStatusCallb;
if ((pAPConnection->roamingEnabled) && (pAPConnection->currentState != AP_CONNECT_STATE_IDLE))
{
param.paramType = ASSOC_ASSOCIATION_REQ_PARAM;
assoc_getParam(pAPConnection->hAssoc, &param);
reportStatus.dataBuf = (char *)(param.content.assocReqBuffer.buffer);
reportStatus.dataBufLength = param.content.assocReqBuffer.bufferSize;
reportStatus.status = CONN_STATUS_CONNECTED;
reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
((apConn_t *)hAPConnection)->returnNeighborApsCallb = returnNeighborApsCallb;
return TI_OK;
}
TI_STATUS apConn_unregisterRoamMngrCallb(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection = (apConn_t *)hAPConnection;
pAPConnection->roamEventCallb = NULL;
pAPConnection->reportStatusCallb = NULL;
pAPConnection->returnNeighborApsCallb = NULL;
if ((pAPConnection->currentState != AP_CONNECT_STATE_IDLE) && (pAPConnection->currentState != AP_CONNECT_STATE_WAIT_ROAM))
{
/* Roaming Manager is unregistering it's callbacks in the middle of roaming - disconnect */
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_STOP, pAPConnection);
}
return TI_OK;
}
TI_STATUS apConn_disconnect(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection = (apConn_t *)hAPConnection;
UPDATE_SEND_DEAUTH_PACKET_FLAG(pAPConnection->roamReason);
if (pAPConnection->roamReason == ROAMING_TRIGGER_SECURITY_ATTACK)
pAPConnection->deauthPacketReasonCode = STATUS_MIC_FAILURE;
else
pAPConnection->deauthPacketReasonCode = STATUS_UNSPECIFIED;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_STOP, pAPConnection);
pAPConnection->disconnectFromRoamMngrNum++;
return TI_OK;
}
TI_STATUS apConn_getStaCapabilities(TI_HANDLE hAPConnection,
apConn_staCapabilities_t *ie_list)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
apConn_staCapabilities_t *pList;
paramInfo_t param;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pList = ie_list;
/* Get authentication suite type */
param.paramType = RSN_EXT_AUTHENTICATION_MODE;
rsn_getParam(pAPConnection->hPrivacy, &param);
switch (param.content.rsnExtAuthneticationMode)
{
case RSN_EXT_AUTH_MODE_OPEN:
pList->authMode = os802_11AuthModeOpen;
break;
case RSN_EXT_AUTH_MODE_SHARED_KEY:
pList->authMode = os802_11AuthModeShared;
break;
case RSN_EXT_AUTH_MODE_AUTO_SWITCH:
pList->authMode = os802_11AuthModeAutoSwitch;
break;
case RSN_EXT_AUTH_MODE_WPA:
pList->authMode = os802_11AuthModeWPA;
break;
case RSN_EXT_AUTH_MODE_WPAPSK:
pList->authMode = os802_11AuthModeWPAPSK;
break;
case RSN_EXT_AUTH_MODE_WPANONE:
pList->authMode = os802_11AuthModeWPANone;
break;
case RSN_EXT_AUTH_MODE_WPA2:
pList->authMode = os802_11AuthModeWPA2;
break;
case RSN_EXT_AUTH_MODE_WPA2PSK:
pList->authMode = os802_11AuthModeWPA2PSK;
break;
default:
pList->authMode = os802_11AuthModeOpen;
break;
}
/* Get encryption type */
param.paramType = RSN_ENCRYPTION_STATUS_PARAM;
rsn_getParam(pAPConnection->hPrivacy, &param);
switch (param.content.rsnEncryptionStatus)
{
case TWD_CIPHER_NONE:
pList->encryptionType = OS_ENCRYPTION_TYPE_NONE;
break;
case TWD_CIPHER_WEP:
case TWD_CIPHER_WEP104:
pList->encryptionType = OS_ENCRYPTION_TYPE_WEP;
break;
case TWD_CIPHER_TKIP:
case TWD_CIPHER_CKIP:
pList->encryptionType = OS_ENCRYPTION_TYPE_TKIP;
break;
case TWD_CIPHER_AES_WRAP:
case TWD_CIPHER_AES_CCMP:
pList->encryptionType = OS_ENCRYPTION_TYPE_AES;
break;
default:
pList->encryptionType = OS_ENCRYPTION_TYPE_NONE;
break;
}
/* Get supported rates */
param.paramType = SITE_MGR_DESIRED_SUPPORTED_RATE_SET_PARAM;
siteMgr_getParam(pAPConnection->hSiteMgr, &param);
os_memoryCopy(pAPConnection->hOs, (void *)param.content.siteMgrDesiredSupportedRateSet.ratesString, pList->rateMask, sizeof(OS_802_11_RATES_EX));
/* Get mode: 2.4G, 5G or Dual */
param.paramType = SITE_MGR_DESIRED_DOT11_MODE_PARAM;
siteMgr_getParam(pAPConnection->hSiteMgr, &param);
pList->networkType = (OS_802_11_NETWORK_TYPE)param.content.siteMgrDot11Mode;
switch(param.content.siteMgrDot11Mode)
{
case DOT11_B_MODE:
pList->networkType = os802_11DS;
break;
case DOT11_A_MODE:
pList->networkType = os802_11OFDM5;
break;
case DOT11_G_MODE:
pList->networkType = os802_11OFDM24;
break;
case DOT11_DUAL_MODE:
pList->networkType = os802_11Automode;
break;
default:
pList->networkType = os802_11DS;
break;
}
/* Get XCC status */
#ifdef XCC_MODULE_INCLUDED
param.paramType = XCC_ENABLED;
XCCMngr_getParam(pAPConnection->hXCCMngr, &param);
pList->XCCEnabled = (param.content.XCCEnabled==XCC_MODE_ENABLED)? TI_TRUE : TI_FALSE;
#else
pList->XCCEnabled = TI_FALSE;
#endif
/* Get QoS type */
param.paramType = QOS_MNGR_ACTIVE_PROTOCOL;
qosMngr_getParams(pAPConnection->hQos, &param);
pList->qosEnabled = param.content.qosSiteProtocol != QOS_NONE;
pList->regDomain = REG_DOMAIN_FIXED;
/* Get regulatory domain type */
param.paramType = REGULATORY_DOMAIN_MANAGEMENT_CAPABILITY_ENABLED_PARAM;
regulatoryDomain_getParam(pAPConnection->hRegulatoryDomain, &param);
if (param.content.spectrumManagementEnabled)
{ /* 802.11h is enabled (802.11h includes 802.11d) */
pList->regDomain = REG_DOMAIN_80211H;
}
else
{
param.paramType = REGULATORY_DOMAIN_ENABLED_PARAM;
regulatoryDomain_getParam(pAPConnection->hRegulatoryDomain, &param);
if (param.content.regulatoryDomainEnabled)
{ /* 802.11d is enabled */
pList->regDomain = REG_DOMAIN_80211D;
}
}
return TI_OK;
}
TI_STATUS apConn_connectToAP(TI_HANDLE hAPConnection,
bssEntry_t *newAP,
apConn_connRequest_t *request,
TI_BOOL reNegotiateTspec)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection->requestType = request->requestType;
switch (request->requestType)
{
case AP_CONNECT_RETAIN_CURR_AP:
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_RETAIN_CURRENT_AP, pAPConnection);
break;
case AP_CONNECT_FULL_TO_AP:
pAPConnection->removeKeys = TI_TRUE;
pAPConnection->newAP = newAP;
pAPConnection->roamingFailedHandoverNum++;
pAPConnection->reNegotiateTSPEC = reNegotiateTspec;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_START_ROAM, pAPConnection);
break;
case AP_CONNECT_FAST_TO_AP:
case AP_CONNECT_RECONNECT_CURR_AP:
pAPConnection->removeKeys = TI_FALSE;
pAPConnection->newAP = newAP;
pAPConnection->roamingFailedHandoverNum++;
pAPConnection->reNegotiateTSPEC = reNegotiateTspec;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_START_ROAM, pAPConnection);
break;
default:
break;
}
/* If there is vendor specific IE to attach to Assoc req, store it now */
if (request->dataBufLength > 0)
{
pAPConnection->vsIEbuf = request->dataBuf;
pAPConnection->vsIElength = request->dataBufLength;
}
return TI_OK;
}
bssEntry_t *apConn_getBSSParams(TI_HANDLE hAPConnection)
{
#ifdef TI_DBG
if (hAPConnection == NULL) /* Failed to allocate control block */
{
WLAN_OS_REPORT(("FATAL ERROR: apConn_create(): Error allocating cb - aborting\n"));
return NULL;
}
#endif
return currBSS_getBssInfo(((apConn_t *)hAPConnection)->hCurrBSS);
}
TI_BOOL apConn_isSiteBanned(TI_HANDLE hAPConnection, TMacAddr * givenAp)
{
apConn_t * pAPConnection = (apConn_t *) hAPConnection;
return rsn_isSiteBanned(pAPConnection->hPrivacy, *givenAp);
}
TI_BOOL apConn_getPreAuthAPStatus(TI_HANDLE hAPConnection, TMacAddr *givenAp)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
paramInfo_t param;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
param.paramType = RSN_PRE_AUTH_STATUS;
MAC_COPY (param.content.rsnApMac, *givenAp);
rsn_getParam(pAPConnection->hPrivacy, &param);
return param.content.rsnPreAuthStatus;
}
TI_STATUS apConn_preAuthenticate(TI_HANDLE hAPConnection, bssList_t *listAPs)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
TBssidList4PreAuth apList;
TI_UINT32 listIndex, apListIndex;
bssEntry_t *pCurrentAP;
TI_UINT8 *pRsnIEs;
#ifdef TI_DBG
if ((hAPConnection == NULL) || (listAPs == NULL))
{
WLAN_OS_REPORT(("FATAL ERROR: AP Connection context is not initiated\n"));
return TI_NOK;
}
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_reserveResources \n");
#endif
for (listIndex=0, apListIndex=0; listIndex<listAPs->numOfEntries; listIndex++)
{
MAC_COPY (apList.bssidList[apListIndex].bssId,
listAPs->BSSList[listIndex].BSSID);
/* search in the buffer pointer to the beginning of the
RSN IE according to the IE ID */
if (!mlmeParser_ParseIeBuffer (pAPConnection->hMlme, listAPs->BSSList[listIndex].pBuffer, listAPs->BSSList[listIndex].bufferLength, RSN_IE_ID, &pRsnIEs, NULL, 0))
{
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_preAuthenticate, no RSN IE was found \n");
TRACE_INFO_HEX(pAPConnection->hReport, listAPs->BSSList[listIndex].pBuffer, listAPs->BSSList[listIndex].bufferLength);
continue;
}
apList.bssidList[apListIndex].pRsnIEs = (dot11_RSN_t*)pRsnIEs;
apList.bssidList[apListIndex].rsnIeLen = apList.bssidList[apListIndex].pRsnIEs->hdr[1] + 2;
apListIndex++;
}
/* Start pre-auth after any Conn succ (including first),
and not only when a New BSSID was added, in order to save/refresh
PMKID of the current AP.*/
{
/* Add the current BSSID to the list */
pCurrentAP = apConn_getBSSParams(pAPConnection);
MAC_COPY (apList.bssidList[apListIndex].bssId, pCurrentAP->BSSID);
/* search in the buffer pointer to the beginning of the
RSN IE according to the IE ID */
if (!mlmeParser_ParseIeBuffer (pAPConnection->hMlme, pCurrentAP->pBuffer, pCurrentAP->bufferLength, RSN_IE_ID, &pRsnIEs, NULL, 0))
{
TRACE6(pAPConnection->hReport, REPORT_SEVERITY_ERROR, "apConn_preAuthenticate, no RSN IE was found in the current BSS, BSSID=0x%x-0x%x-0x%x-0x%x-0x%x-0x%x \n", pCurrentAP->BSSID[0], pCurrentAP->BSSID[1], pCurrentAP->BSSID[2], pCurrentAP->BSSID[3], pCurrentAP->BSSID[4], pCurrentAP->BSSID[5]);
report_PrintDump (pCurrentAP->pBuffer, pCurrentAP->bufferLength);
apList.bssidList[apListIndex].pRsnIEs = NULL;
apList.bssidList[apListIndex].rsnIeLen = 0;
}
else
{
apList.bssidList[apListIndex].pRsnIEs = (dot11_RSN_t*)pRsnIEs;
apList.bssidList[apListIndex].rsnIeLen = apList.bssidList[apListIndex].pRsnIEs->hdr[1] + 2;
}
apList.NumOfItems = apListIndex+1;
rsn_startPreAuth(pAPConnection->hPrivacy, &apList);
}
return TI_OK;
}
TI_STATUS apConn_prepareToRoaming(TI_HANDLE hAPConnection, apConn_roamingTrigger_e reason)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection->roamReason = reason;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_PREPARE_FOR_ROAMING, pAPConnection);
return TI_OK;
}
/**
*
* apConn_indicateSwitchChannelInProgress
*
* \b Description:
*
* This function is called when switch channel process is started; it will trigger
* AP Connection state machine from 'Wait for roaming start' to 'Switch channel in progress'
* state.
*
* \b ARGS:
*
* I - reason - the reason for roaming \n
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_indicateSwitchChannelInProgress(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_START_SWITCH_CHANNEL, pAPConnection);
return TI_OK;
}
/**
*
* apConn_indicateSwitchChannelFinished
*
* \b Description:
*
* This function is called when switch channel process is finished
*
* \b ARGS:
*
* I - reason - the reason for roaming \n
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_indicateSwitchChannelFinished(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_SWITCH_CH, pAPConnection);
return TI_OK;
}
/**
*
* apConn_start
*
* \b Description:
*
* Called by SME module when new connection has been successfully established (first time connection)
*
* \b ARGS:
*
* I - isValidBSS - if TI_FALSE, no roaming shall be performed, disconnect upon any roaming event;
* other parameters of current AP can be received from Current BSS module
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_start(TI_HANDLE hAPConnection, TI_BOOL roamingEnabled)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
pAPConnection->roamingEnabled = roamingEnabled;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_START, pAPConnection);
return TI_OK;
}
/**
*
* apConn_stop
*
* \b Description:
*
* Called by SME module when current connection must be taken down
* (due to driver download, connection failure or any other reason)
*
* \b ARGS:
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_stop(TI_HANDLE hAPConnection, TI_BOOL removeKeys)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
pAPConnection->stopFromSmeNum++;
pAPConnection->removeKeys = removeKeys;
pAPConnection->sendDeauthPacket = TI_TRUE;
pAPConnection->reNegotiateTSPEC = TI_FALSE;
pAPConnection->voiceTspecConfigured = TI_FALSE;
pAPConnection->videoTspecConfigured = TI_FALSE;
/* Mark that the connection is stopped due to reason outside the scope of this module */
if (pAPConnection->roamReason == ROAMING_TRIGGER_SECURITY_ATTACK)
pAPConnection->bNonRoamingDisAssocReason = TI_FALSE;
else
pAPConnection->bNonRoamingDisAssocReason = TI_TRUE;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_STOP, pAPConnection);
return TI_OK;
}
/**
*
* apConn_reportRoamingEvent
*
* \b Description:
*
* Called when one of roaming events occur
*
* \b ARGS:
*
* I - roamingEventType
* I - pRoamingEventData - in case of 'Tx rate' event, or AP disconnect
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_reportRoamingEvent(TI_HANDLE hAPConnection,
apConn_roamingTrigger_e roamingEventType,
roamingEventData_u *pRoamingEventData)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
paramInfo_t param; /* parameter for retrieving BSSID */
TI_UINT16 reasonCode = 0;
AP_CONN_VALIDATE_HANDLE(hAPConnection);
TRACE4(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_reportRoamingEvent, type=%d, cur_state=%d, roamingEnabled=%d, roamEventCallb=%p \n", roamingEventType, pAPConnection->currentState, pAPConnection->roamingEnabled, pAPConnection->roamEventCallb);
pAPConnection->assocRoamingTrigger = roamingEventType;
/* 1. Check if this is Rogue AP test case */
if (roamingEventType == ROAMING_TRIGGER_AP_DISCONNECT)
{
if (pRoamingEventData != NULL)
{ /* Save the disconnect reason for future use */
pAPConnection->APDisconnect.uStatusCode = pRoamingEventData->APDisconnect.uStatusCode;
pAPConnection->APDisconnect.bDeAuthenticate = pRoamingEventData->APDisconnect.bDeAuthenticate;
reasonCode = pRoamingEventData->APDisconnect.uStatusCode;
}
if ((pAPConnection->ignoreDeauthReason0) && (pRoamingEventData!=NULL) &&
(pAPConnection->APDisconnect.uStatusCode == 0))
{ /* This is required for Rogue AP test,
When Rogue AP due to invalid User name, deauth with reason 0 arrives before the Rogue AP,
and this XCC test fails.*/
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_reportRoamingEvent, Ignore DeAuth with reason 0 \n");
return TI_OK;
}
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_reportRoamingEvent, DeAuth with reason %d \n", pAPConnection->APDisconnect.uStatusCode);
if (pAPConnection->APDisconnect.uStatusCode == STATUS_CODE_802_1X_AUTHENTICATION_FAILED)
{
#ifdef XCC_MODULE_INCLUDED
/* Raise the EAP-Failure as event */
XCCMngr_rogueApDetected (pAPConnection->hXCCMngr, RSN_AUTH_STATUS_CHALLENGE_FROM_AP_FAILED);
#endif
/* Remove AP from candidate list for a specified amount of time */
param.paramType = SITE_MGR_CURRENT_BSSID_PARAM;
siteMgr_getParam(pAPConnection->hSiteMgr, &param);
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "current station is banned from the roaming candidates list for %d Ms\n", RSN_AUTH_FAILURE_TIMEOUT);
rsn_banSite(pAPConnection->hPrivacy, param.content.siteMgrDesiredBSSID, RSN_SITE_BAN_LEVEL_FULL, RSN_AUTH_FAILURE_TIMEOUT);
}
}
/* 2. Check if received trigger is masked out */
if (((pAPConnection->isConsTxFailureMaskedOut) && (roamingEventType == ROAMING_TRIGGER_MAX_TX_RETRIES)) ||
((pAPConnection->isRssiTriggerMaskedOut) && (roamingEventType == ROAMING_TRIGGER_LOW_QUALITY)) ||
((pAPConnection->isSnrTriggerMaskedOut) && (roamingEventType == ROAMING_TRIGGER_LOW_SNR)) ||
((pAPConnection->islowRateTriggerMaskedOut)&& (roamingEventType == ROAMING_TRIGGER_LOW_TX_RATE)))
{
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_reportRoamingEvent, trigger ignored \n");
return TI_OK;
}
/* 3. Valid trigger received: */
/* 3a. Update statistics */
pAPConnection->roamingTriggerEvents[roamingEventType]++;
/* 3b. Store the most severe trigger */
if (pAPConnection->roamReason < roamingEventType)
{
pAPConnection->roamReason = roamingEventType;
}
/* 3c. Check if Roaming Manager is available */
if (((!pAPConnection->roamingEnabled) || (pAPConnection->roamEventCallb == NULL) ||
(pAPConnection->currentState == AP_CONNECT_STATE_IDLE))
&& (roamingEventType > ROAMING_TRIGGER_MAX_TX_RETRIES))
{
/* 'Any SSID' configured, meaning Roaming Manager is not allowed to perform roaming,
or Roaming Manager is not registered for roaming events;
unless this is trigger to change parameters of background scan, disconnect the link */
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "Disconnecting link due to roaming event: ev = %d\n", roamingEventType);
/* Handle IBSS case TBD to remove
Handle also the case where A first connection is in progress, and
de-auth arrived. */
if (pAPConnection->currentState == AP_CONNECT_STATE_IDLE)
{
sme_ReportApConnStatus(pAPConnection->hSme, STATUS_DISCONNECT_DURING_CONNECT, pAPConnection->APDisconnect.uStatusCode);
}
else
{
/* Infra-structure BSS case - disconnect the link */
if (roamingEventType >= ROAMING_TRIGGER_AP_DISCONNECT && (roamingEventType != ROAMING_TRIGGER_TSPEC_REJECTED))
{
pAPConnection->removeKeys = TI_TRUE;
}
else
{
pAPConnection->removeKeys = TI_FALSE;
}
UPDATE_SEND_DEAUTH_PACKET_FLAG(roamingEventType);
if (roamingEventType == ROAMING_TRIGGER_SECURITY_ATTACK)
pAPConnection->deauthPacketReasonCode = STATUS_MIC_FAILURE;
else
pAPConnection->deauthPacketReasonCode = STATUS_UNSPECIFIED;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_STOP, pAPConnection);
}
return TI_OK;
}
/* 4. Check if we are in the middle of switching channel */
if (pAPConnection->currentState == AP_CONNECT_STATE_SWITCHING_CHANNEL)
{
/* Trigger received in the middle of switch channel, continue without reporting Roaming Manager */
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "Roaming event during switch channel: ev = %d\n", roamingEventType);
return TI_OK;
}
/* 5. Report Roaming Manager */
if ((pAPConnection->roamingEnabled == TI_TRUE) && (pAPConnection->roamEventCallb != NULL))
{
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "Roaming event raised: ev = %d\n", roamingEventType);
if (roamingEventType == ROAMING_TRIGGER_LOW_QUALITY)
{
EvHandlerSendEvent(pAPConnection->hEvHandler, IPC_EVENT_LOW_RSSI, NULL,0);
}
/* Report to Roaming Manager */
#ifdef XCC_MODULE_INCLUDED
/* For XCC only - if the is reason is TSPEC reject - mark this as BssLoss - To be changed later */
if (roamingEventType == ROAMING_TRIGGER_TSPEC_REJECTED)
{
roamingEventType = ROAMING_TRIGGER_BSS_LOSS;
}
#endif
pAPConnection->roamEventCallb(pAPConnection->hRoamMng, &roamingEventType, reasonCode);
}
return TI_OK;
}
/**
*
* apConn_RoamHandoffFinished
*
* \b Description:
*
* Called when XCC module receives response from the supplicant or recognizes
* timeout while waiting for the response
*
* \b ARGS:
*
* \b RETURNS:
*
* \sa
*/
void apConn_RoamHandoffFinished(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
#ifdef TI_DBG
if (hAPConnection == NULL) /* Failed to allocate control block */
{
WLAN_OS_REPORT(("FATAL ERROR: apConn_create(): Error allocating cb - aborting\n"));
return;
}
#endif
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_HAND_OVER, pAPConnection);
}
/**
*
* apConn_DisconnCompleteInd
*
* \b Description:
*
* DISASSOCIATE Packet was sent - proceed with stopping the module
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* None
*
* \sa
*/
void apConn_DisconnCompleteInd(TI_HANDLE hAPConnection, mgmtStatus_e status, TI_UINT32 uStatusCode)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_OK, pAPConnection);
}
/**
*
* apConn_updateNeighborAPsList
*
* \b Description:
*
* Called by XCC Manager when Priority APs are found
*
* \b ARGS:
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
void apConn_updateNeighborAPsList(TI_HANDLE hAPConnection, neighborAPList_t *pListOfpriorityAps)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
if (pAPConnection->returnNeighborApsCallb != NULL )
{
pAPConnection->returnNeighborApsCallb(pAPConnection->hRoamMng, pListOfpriorityAps);
}
}
/**
*
* apConn_getRoamingStatistics
*
* \b Description:
*
* Called from Measurement XCC sub-module when preparing TSM report to the AP.
*
* \b ARGS: AP Connection handle
*
* \b RETURNS:
*
* total number of successful roams
* delay of the latest successful roam
*
* \sa
*/
void apConn_getRoamingStatistics(TI_HANDLE hAPConnection, TI_UINT8 *roamingCount, TI_UINT16 *roamingDelay)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
/* Get (and clear) total number of successful roams */
*roamingCount = pAPConnection->roamingSuccesfulHandoverNum;
pAPConnection->roamingSuccesfulHandoverNum = 0;
/* Get delay of the latest roam */
*roamingDelay = pAPConnection->lastRoamingDelay;
pAPConnection->lastRoamingDelay = 0;
}
/**
*
* apConn_resetRoamingStatistics
*
* \b Description:
*
* Called from Measurement XCC sub-module in order to re-start roaming statistics.
*
* \b ARGS: AP Connection handle
*
* \b RETURNS:
*
* total number of successful roams
* delay of the latest successful roam
*
* \sa
*/
void apConn_resetRoamingStatistics(TI_HANDLE hAPConnection)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
pAPConnection->resetReportedRoamingStatistics = TI_TRUE;
pAPConnection->roamingSuccesfulHandoverNum = 0;
pAPConnection->lastRoamingDelay = 0;
}
/**
*
* apConn_printStatistics
*
* \b Description:
*
* Called by Site Manager when request to print statistics is requested from CLI
*
* \b ARGS: AP Connection handle
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
void apConn_printStatistics(TI_HANDLE hAPConnection)
{
WLAN_OS_REPORT(("-------------- Roaming Statistics ---------------\n\n"));
WLAN_OS_REPORT(("- Low TX rate = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_LOW_TX_RATE]));
WLAN_OS_REPORT(("- Low SNR = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_LOW_SNR]));
WLAN_OS_REPORT(("- Low Quality = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_LOW_QUALITY]));
WLAN_OS_REPORT(("- MAX TX retries = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_MAX_TX_RETRIES]));
WLAN_OS_REPORT(("- BSS Loss TX = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_BSS_LOSS]));
WLAN_OS_REPORT(("- Switch Channel = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_SWITCH_CHANNEL]));
WLAN_OS_REPORT(("- AP Disconnect = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_AP_DISCONNECT]));
WLAN_OS_REPORT(("- SEC attack = %d\n", ((apConn_t *)hAPConnection)->roamingTriggerEvents[ROAMING_TRIGGER_SECURITY_ATTACK]));
WLAN_OS_REPORT(("\n"));
WLAN_OS_REPORT(("- Successful roaming = %d\n", ((apConn_t *)hAPConnection)->roamingSuccesfulHandoverTotalNum));
WLAN_OS_REPORT(("- UnSuccessful roaming = %d\n", ((apConn_t *)hAPConnection)->roamingFailedHandoverNum));
WLAN_OS_REPORT(("- Giving up roaming = %d\n", ((apConn_t *)hAPConnection)->retainCurrAPNum));
WLAN_OS_REPORT(("- Disconnect cmd from roaming manager = %d\n", ((apConn_t *)hAPConnection)->disconnectFromRoamMngrNum));
WLAN_OS_REPORT(("- Disconnect cmd from SME = %d\n", ((apConn_t *)hAPConnection)->stopFromSmeNum));
WLAN_OS_REPORT(("\n"));
}
/**
*
* apConn_getVendorSpecificIE
*
* \b Description:
*
* Called by Association SM when request to associate is built and sent to AP;
* returns request updated with vendor specific info-element
*
* \b ARGS:
*
* I - hAPConnection - AP Connection handle\n
* O - pRequest - pointer to request buffer\n
* O - len - size of returned IE\n
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
* \sa
*/
TI_STATUS apConn_getVendorSpecificIE(TI_HANDLE hAPConnection, TI_UINT8 *pRequest, TI_UINT32 *len)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
if (pAPConnection->vsIElength > 0)
{
*len = pAPConnection->vsIElength;
os_memoryCopy(pAPConnection->hOs, pRequest, pAPConnection->vsIEbuf, pAPConnection->vsIElength);
}
else
{
*len = 0;
}
return TI_OK;
}
/* Internal functions implementation */
/**
*
* apConn_smEvent
*
* \b Description:
*
* AP Connection state machine transition function
*
* \b ARGS:
*
* I/O - currentState - current state in the state machine\n
* I - event - specific event for the state machine\n
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static TI_STATUS apConn_smEvent(TI_UINT8 *currState, TI_UINT8 event, void* data)
{
apConn_t *pAPConnection = (apConn_t *)data;
TGenSM *pGenSM = (TGenSM*)pAPConnection->hAPConnSM;
TRACE2(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_smEvent: currState = %d, event = %d\n", pGenSM->uCurrentState, event);
genSM_Event (pAPConnection->hAPConnSM, (TI_UINT32)event, data);
pAPConnection->currentState = pGenSM->uCurrentState;
TRACE1(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_smEvent: newState = %d\n", pAPConnection->currentState);
return TI_OK;
}
/**
*
* apConn_smNop - Do nothing
*
* \b Description:
*
* Do nothing in the SM.
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context \n
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
*
*/
static void apConn_smNop(void *pData)
{
apConn_t *hReport = ((apConn_t *)pData)->hReport;
TRACE0(hReport, REPORT_SEVERITY_INFORMATION, "apConn_smNop\n");
}
/**
*
* apConn_smUnexpected - Unexpected event
*
* \b Description:
*
* Unexpected event in the SM.
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context \n
*
* \b RETURNS:
*
* TI_OK if successful, TI_NOK otherwise.
*
*
*/
void apConn_smUnexpected(void *pData)
{
TRACE0(((apConn_t *)pData)->hReport, REPORT_SEVERITY_INFORMATION, "apConn_smUnexpected\n");
}
/**
*
* apConn_smStartWaitingForTriggers
*
* \b Description:
*
* SME informs AP Connection module about successfull link establishment; start wiating for roaming triggers
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context \n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smStartWaitingForTriggers(void *pData)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
paramInfo_t param;
pAPConnection = (apConn_t *)pData;
if ((pAPConnection->roamingEnabled) && (pAPConnection->reportStatusCallb != NULL))
{
param.paramType = ASSOC_ASSOCIATION_REQ_PARAM;
assoc_getParam(pAPConnection->hAssoc, &param);
reportStatus.dataBuf = (char *)(param.content.assocReqBuffer.buffer);
reportStatus.dataBufLength = param.content.assocReqBuffer.bufferSize;
reportStatus.status = CONN_STATUS_CONNECTED;
pAPConnection->reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
pAPConnection->firstAttempt2Roam = TI_TRUE;
pAPConnection->roamReason = ROAMING_TRIGGER_NONE;
pAPConnection->removeKeys = TI_TRUE;
pAPConnection->sendDeauthPacket = TI_TRUE;
pAPConnection->reNegotiateTSPEC = TI_FALSE;
pAPConnection->voiceTspecConfigured = TI_FALSE;
pAPConnection->videoTspecConfigured = TI_FALSE;
}
/**
*
* apConn_smConnectedToNewAP
*
* \b Description:
*
* After roaming was requested, Connection SM informs AP Connection module about
* successful link re-establishment; start waiting for roaming triggers
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context \n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smConnectedToNewAP(void *pData)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
paramInfo_t param;
pAPConnection = (apConn_t *)pData;
/* Configure SCR group back to connection */
scr_setGroup (pAPConnection->hScr, SCR_GID_CONNECTED);
/* Erase vendor specific info-element if was defined for last AP Assoc request */
pAPConnection->vsIElength = 0;
/* TBD Notify Curr BSS module about update of current AP database */
if (pAPConnection->roamingFailedHandoverNum>0)
{
pAPConnection->roamingFailedHandoverNum--;
}
/* Report Roaming Manager */
if (pAPConnection->reportStatusCallb != NULL)
{
param.paramType = ASSOC_ASSOCIATION_REQ_PARAM;
assoc_getParam(pAPConnection->hAssoc, &param);
reportStatus.dataBuf = (char *)(param.content.assocReqBuffer.buffer);
reportStatus.dataBufLength = param.content.assocReqBuffer.bufferSize;
reportStatus.status = CONN_STATUS_HANDOVER_SUCCESS;
pAPConnection->reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
pAPConnection->firstAttempt2Roam = TI_TRUE;
pAPConnection->roamReason = ROAMING_TRIGGER_NONE;
pAPConnection->roamingSuccesfulHandoverTotalNum++;
pAPConnection->removeKeys = TI_TRUE;
pAPConnection->sendDeauthPacket = TI_TRUE;
pAPConnection->reNegotiateTSPEC = TI_FALSE;
pAPConnection->voiceTspecConfigured = TI_FALSE;
pAPConnection->videoTspecConfigured = TI_FALSE;
if (!pAPConnection->resetReportedRoamingStatistics)
{
pAPConnection->roamingSuccesfulHandoverNum++;
pAPConnection->lastRoamingDelay =
(TI_UINT16)os_timeStampMs(pAPConnection->hOs) - pAPConnection->roamingStartedTimestamp;
}
else
{
pAPConnection->resetReportedRoamingStatistics = TI_FALSE;
}
/* Raise event of Roaming Completion */
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "EvHandlerSendEvent -ROAMING_COMPLETE\n");
EvHandlerSendEvent(pAPConnection->hEvHandler, IPC_EVENT_ROAMING_COMPLETE, NULL, 0);
}
/**
*
* apConn_smStopConnection
*
* \b Description:
*
* Stop required before roaming was started
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smStopConnection(void *pData)
{
apConn_t *pAPConnection;
DisconnectType_e disConnType;
pAPConnection = (apConn_t *)pData;
TRACE2(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, "apConn_smStopConnection, calls conn_stop, removeKeys=%d, sendDeauthPacket=%d \n", pAPConnection->removeKeys, pAPConnection->sendDeauthPacket);
/* Erase vendor specific info-element if was defined for last AP Assoc request */
pAPConnection->vsIElength = 0;
/* In case AP connection was stopped by SME, and radioOn is false, meaning immidiate shutdown is required without disassoc frame */
/* Otherwise, ask for normal disconnection with disassoc frame */
disConnType = (pAPConnection->sendDeauthPacket == TI_TRUE) ? DISCONNECT_DE_AUTH : DISCONNECT_IMMEDIATE;
/* set the SCr group to connecting */
scr_setGroup (pAPConnection->hScr, SCR_GID_CONNECT);
/* Stop Connection state machine - always immediate TBD */
conn_stop(pAPConnection->hConnSm,
disConnType,
(mgmtStatus_e)pAPConnection->deauthPacketReasonCode,
pAPConnection->removeKeys, /* for Roaming, do not remove the keys */
apConn_DisconnCompleteInd,
pAPConnection);
pAPConnection->deauthPacketReasonCode = STATUS_UNSPECIFIED;
}
/**
*
* apConn_smReportDisconnected
*
* \b Description:
*
* Moving from 'Disconnecting' state to 'Idle':
* RoamMgr.status("not-connected")
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smReportDisconnected(void *pData)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
pAPConnection = (apConn_t *)pData;
if (pAPConnection->reportStatusCallb != NULL)
{
reportStatus.status = CONN_STATUS_NOT_CONNECTED;
pAPConnection->reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
pAPConnection->firstAttempt2Roam = TI_TRUE;
/* Notify SME */
apConn_reportConnStatusToSME(pAPConnection);
}
/**
*
* apConn_smRetainAP
*
* \b Description:
*
* Roaming Manager gives up on roaming.
* Moving from 'Wait for connection command' back to 'Wait for roam started.
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smRetainAP(void *data)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
paramInfo_t param;
pAPConnection = (apConn_t *)data;
/* Configure SCR group back to connection */
scr_setGroup (pAPConnection->hScr, SCR_GID_CONNECTED);
/* Report Roaming Manager */
if (pAPConnection->reportStatusCallb != NULL)
{
param.paramType = ASSOC_ASSOCIATION_REQ_PARAM;
assoc_getParam(pAPConnection->hAssoc, &param);
reportStatus.dataBuf = (char *)(param.content.assocReqBuffer.buffer);
reportStatus.dataBufLength = param.content.assocReqBuffer.bufferSize;
reportStatus.status = CONN_STATUS_HANDOVER_SUCCESS;
pAPConnection->reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
pAPConnection->retainCurrAPNum++;
pAPConnection->roamReason = ROAMING_TRIGGER_NONE;
pAPConnection->removeKeys = TI_TRUE;
pAPConnection->sendDeauthPacket = TI_TRUE;
pAPConnection->reNegotiateTSPEC = TI_FALSE;
pAPConnection->voiceTspecConfigured = TI_FALSE;
pAPConnection->videoTspecConfigured = TI_FALSE;
}
/**
*
* apConn_smRequestCCKM
*
* \b Description:
*
* Roaming Manager requests to roaming.
* Get CCKM (prepare hand-off).
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smRequestCCKM(void *data)
{
apConn_t *pAPConnection;
pAPConnection = (apConn_t *)data;
#ifdef XCC_MODULE_INCLUDED
/* Send request to XCC module */
apConn_calcNewTsf(pAPConnection, (TI_UINT8 *)&(pAPConnection->newAP->lastRxTSF), pAPConnection->newAP->lastRxHostTimestamp, pAPConnection->newAP->beaconInterval);
XCCMngr_startCckm(pAPConnection->hXCCMngr, &(pAPConnection->newAP->BSSID), (TI_UINT8 *)&(pAPConnection->newAP->lastRxTSF));
#else
apConn_RoamHandoffFinished(pAPConnection);
#endif
}
#ifdef XCC_MODULE_INCLUDED
/**
*
* calcNewTsfTimestamp - Calculates the TSF
*
* \b Description:
*
* Calculates the TSF according to the delta of the TSF from the last Beacon/Probe Resp and the current time.
*
* \b ARGS:
*
* I - hRoamingMngr - pointer to the roamingMngr SM context \n
* I/O - tsfTimeStamp - the TSF field in the site entry of the roaming candidate AP
* I - newSiteOsTimeStamp - the TS field in the site entry of the roaming candidate AP
*
* \b RETURNS:
*
* Nothing.
*
*
*/
static void apConn_calcNewTsf(apConn_t *hAPConnection, TI_UINT8 *tsfTimeStamp, TI_UINT32 newSiteOsTimeStamp, TI_UINT32 beaconInterval)
{
apConn_t *pAPConnection = hAPConnection;
TI_UINT32 osTimeStamp = os_timeStampMs(pAPConnection->hOs);
TI_UINT32 deltaTimeStamp;
TI_UINT32 tsfLsdw,tsfMsdw, newOsTimeStamp;
TI_UINT32 remainder;
TI_UINT8 newTsfTimestamp[TIME_STAMP_LEN];
/* get the delta TS between the TS of the last Beacon/ProbeResp-from the site table
and the current TS */
deltaTimeStamp = osTimeStamp - newSiteOsTimeStamp;
tsfLsdw = *((TI_UINT32*)&tsfTimeStamp[0]);
tsfMsdw = *((TI_UINT32*)&tsfTimeStamp[4]);
TRACE2(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, " TSF time LSDW reversed=%x, TSF time MSDW reversed=%x\n", tsfLsdw, tsfMsdw);
deltaTimeStamp = deltaTimeStamp*1000;/* from mSec to uSec*/
/* Before adding, save remainder */
remainder = tsfTimeStamp[3] + ((deltaTimeStamp & 0xff000000) >> 24);
/* The LS DW of the TS is the TSF taken from the last Beacon/Probe Resp
+ the delta TS from the time the Beacon/Probe Resp arrive till now. */
newOsTimeStamp = deltaTimeStamp+tsfLsdw;
/* substracting one beacon interval */
newOsTimeStamp -= (beaconInterval * 1024); /* im usec */
/* save just for debug printout */
deltaTimeStamp +=osTimeStamp; /* uMsec */
/* update the LSB of the TSF */
newTsfTimestamp[0] = newOsTimeStamp & 0x000000ff;
newTsfTimestamp[1] = (newOsTimeStamp & 0x0000ff00) >> 8;
newTsfTimestamp[2] = (newOsTimeStamp & 0x00ff0000) >> 16;
newTsfTimestamp[3] = (newOsTimeStamp & 0xff000000) >> 24;
/* increase the MSB in case of overflow */
if (remainder > 0xff)
{
tsfMsdw++;
}
/* update the MSB of the TSF */
newTsfTimestamp[4] = tsfMsdw & 0x000000ff;
newTsfTimestamp[5] = (tsfMsdw & 0x0000ff00) >> 8;
newTsfTimestamp[6] = (tsfMsdw & 0x00ff0000) >> 16;
newTsfTimestamp[7] = (tsfMsdw & 0xff000000) >> 24;
TRACE11(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, " NEW TSF time: reversedTsfTimeStamp= 0x%x, New deltaTimeStamp= 0x%x, \n remainder=0x%x, new tsfTimeStamp=%x-%x-%x-%x-%x-%x-%x-%x\n", newOsTimeStamp, deltaTimeStamp, remainder, newTsfTimestamp[0], newTsfTimestamp[1], newTsfTimestamp[2], newTsfTimestamp[3], newTsfTimestamp[4], newTsfTimestamp[5], newTsfTimestamp[6], newTsfTimestamp[7]);
os_memoryCopy(pAPConnection->hOs, tsfTimeStamp, newTsfTimestamp, TIME_STAMP_LEN);
}
#endif
/**
*
* apConn_invokeConnectionToNewAp
*
* \b Description:
*
* Got CCKM (hand-off), start re-connection to another AP
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smInvokeConnectionToNewAp(void *data)
{
apConn_t *pAPConnection;
EConnType connType;
paramInfo_t param;
TI_UINT8 staPrivacySupported, apPrivacySupported;
TI_BOOL renegotiateTspec = TI_FALSE;
pAPConnection = (apConn_t *)data;
pAPConnection->roamingStartedTimestamp = os_timeStampMs(pAPConnection->hOs);
/* Check privacy compatibility */
param.paramType = RSN_ENCRYPTION_STATUS_PARAM;
rsn_getParam(pAPConnection->hPrivacy, &param);
staPrivacySupported = (param.content.rsnEncryptionStatus == TWD_CIPHER_NONE) ? TI_FALSE : TI_TRUE;
apPrivacySupported = ((pAPConnection->newAP->capabilities >> CAP_PRIVACY_SHIFT) & CAP_PRIVACY_MASK) ? TI_TRUE : TI_FALSE;
#ifdef GEM_SUPPORTED
// For GEM – ignore the privacy bit of the AP. Some GEM AP’s don’t turn on the privacy
if ((staPrivacySupported != apPrivacySupported) && (param.content.rsnEncryptionStatus != TWD_CIPHER_GEM))
#else
if (staPrivacySupported != apPrivacySupported)
#endif
{
param.paramType = RSN_MIXED_MODE;
rsn_getParam(pAPConnection->hPrivacy, &param);
if (apPrivacySupported ||
(!param.content.rsnMixedMode && staPrivacySupported))
{
TRACE2(pAPConnection->hReport, REPORT_SEVERITY_WARNING, ": failed privacy comparison %d vs. %d\n", staPrivacySupported, apPrivacySupported);
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_NOT_OK, pAPConnection);
return;
}
}
/* Update data info of desired AP; in case of first attempt to roam,
store previous primary site info */
if (siteMgr_overwritePrimarySite(pAPConnection->hSiteMgr, pAPConnection->newAP, pAPConnection->firstAttempt2Roam) != TI_OK)
{
TRACE0(pAPConnection->hReport, REPORT_SEVERITY_WARNING, ": failed to ovewrite Primary Site\n");
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_NOT_OK, pAPConnection);
return;
}
/* Update re-associate parameter of MLME */
if (pAPConnection->requestType == AP_CONNECT_FAST_TO_AP || pAPConnection->requestType == AP_CONNECT_RECONNECT_CURR_AP)
{
connType = CONN_TYPE_ROAM;
}
else
{
connType = CONN_TYPE_FIRST_CONN;
}
#ifdef XCC_MODULE_INCLUDED
/* Check the need in TSPEC re-negotiation */
if ( (pAPConnection->voiceTspecConfigured || pAPConnection->videoTspecConfigured) && pAPConnection->reNegotiateTSPEC )
{
/* If the candidate AP is at least XCCver4 AP, try to re-negotiate TSPECs */
if (XCCMngr_parseXCCVer(pAPConnection->hXCCMngr,
pAPConnection->newAP->pBuffer,
pAPConnection->newAP->bufferLength) >= 4)
{
renegotiateTspec = TI_TRUE;
}
}
#endif
TRACE2(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, ": calls conn_start, removeKeys=%d, renegotiateTSPEC=%d\n", pAPConnection->removeKeys, renegotiateTspec);
/* Start Connection state machine */
conn_start(pAPConnection->hConnSm,
connType,
apConn_ConnCompleteInd,
pAPConnection,
pAPConnection->removeKeys,
renegotiateTspec);
}
/**
*
* apConn_smReportConnFail
*
* \b Description:
*
* Got 'Failed' indication from Connection state machine - inform Roaming Manager Module
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smReportConnFail(void *data)
{
apConn_t *pAPConnection;
apConn_connStatus_t reportStatus;
paramInfo_t param;
pAPConnection = (apConn_t *)data;
pAPConnection->firstAttempt2Roam = TI_FALSE;
pAPConnection->resetReportedRoamingStatistics = TI_FALSE;
/* Erase vendor specific info-element if was defined for last AP Assoc request */
pAPConnection->vsIElength = 0;
/* Report to Roaming Manager */
if (pAPConnection->reportStatusCallb != NULL)
{
param.paramType = ASSOC_ASSOCIATION_REQ_PARAM;
assoc_getParam(pAPConnection->hAssoc, &param);
reportStatus.dataBuf = (char *)(param.content.assocReqBuffer.buffer);
reportStatus.dataBufLength = param.content.assocReqBuffer.bufferSize;
reportStatus.status = CONN_STATUS_HANDOVER_FAILURE;
pAPConnection->reportStatusCallb(pAPConnection->hRoamMng, &reportStatus);
}
}
/**
*
* apConn_smConfigureDriverBeforeRoaming
*
* \b Description:
*
* Got 'Failed' indication from Connection state machine - inform Roaming Manager Module
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smConfigureDriverBeforeRoaming(void *pData)
{
apConn_t *pAPConnection = (apConn_t*)pData;
paramInfo_t param;
/* Configure SCR group of allowed clients according to 'Roaming' rule */
scr_setGroup (pAPConnection->hScr, SCR_GID_ROAMING);
param.paramType = QOS_MNGR_VOICE_RE_NEGOTIATE_TSPEC;
qosMngr_getParams(pAPConnection->hQos, &param);
pAPConnection->voiceTspecConfigured = param.content.TspecConfigure.voiceTspecConfigure;
pAPConnection->videoTspecConfigured = param.content.TspecConfigure.videoTspecConfigure;
pAPConnection->resetReportedRoamingStatistics = TI_FALSE;
}
/**
*
* apConn_smSwChFinished
*
* \b Description:
*
* Switch channel completed; if there were roaming Manager triggers meanwhile,
* inform Roaming Manager Module
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smSwChFinished(void *pData)
{
apConn_t *pAPConnection = (apConn_t *)pData;
/* Inform Current BSS module */
currBSS_restartRssiCounting(pAPConnection->hCurrBSS);
/* If there are unreported roaming triggers of 'No AP' type,
report them now to roaming manager */
if (pAPConnection->roamReason >= ROAMING_TRIGGER_MAX_TX_RETRIES)
{
if ((pAPConnection->roamingEnabled == TI_TRUE) &&
(pAPConnection->roamEventCallb != NULL))
{
/* Report to Roaming Manager */
pAPConnection->roamEventCallb(pAPConnection->hRoamMng, &pAPConnection->roamReason, (TI_UINT16)0);
}
}
else
{
pAPConnection->roamReason = ROAMING_TRIGGER_NONE;
}
}
/**
*
* apConn_smHandleTspecReneg
*
* \b Description:
*
* This function will be called when moving from CONNECTING state to
* START_TSPEC_RENEGOTIATION state. It checks if TSPEC re-negotiation was requested
* by roaming manager, if the TSPEC for voice was defined by user application,
* if the re-negotiation was performed during hand-over.
* If so, it will trigger moving to WAIT_ROAM state, otherwise it will start
* TSPEC negotiation, staying in the REESTABLISHING_VOICE state and waiting
* for results.
*
* \b ARGS:
*
* I - pData - pointer to AP Connection context\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static void apConn_smHandleTspecReneg (void *pData)
{
apConn_t *pAPConnection = (apConn_t *)pData;
paramInfo_t param;
if (pAPConnection->voiceTspecConfigured
#ifndef XCC_MODULE_INCLUDED
&& pAPConnection->reNegotiateTSPEC
#endif
)
{
#ifndef XCC_MODULE_INCLUDED
param.paramType = QOS_MNGR_VOICE_RE_NEGOTIATE_TSPEC;
qosMngr_getParams(pAPConnection->hQos, &param);
if (param.content.TspecConfigure.voiceTspecConfigure == TI_TRUE)
{
/* TSPEC is already configured, move to CONNECTED */
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_OK, pAPConnection);
}
else
#endif
{
param.paramType = QOS_MNGR_RESEND_TSPEC_REQUEST;
param.content.qosRenegotiateTspecRequest.callback = (void *)apConn_qosMngrReportResultCallb;
param.content.qosRenegotiateTspecRequest.handler = pData;
if (qosMngr_setParams(pAPConnection->hQos, &param) != TI_OK)
{
/* Re-negotiation of TSPEC cannot be performed */
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_NOT_OK, pAPConnection);
}
}
}
else
{
/* No need to re-negotiate TSPEC, move to CONNECTED */
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_OK, pAPConnection);
}
return;
}
/**
*
* apConn_qosMngrReportResultCallb
*
* \b Description:
*
* This function will be transferred to QoS manager upon request to start negotiation
* of the TSPEC for voice and signaling, and will be called when the voice TSPEC
* renegotiation is completed. The function will generate FINISHED_OK or
* FINISHED_NOK events to the state machine of AP Connection, triggering change of
* the current state.
*
* \b ARGS:
*
* I - hApConn - pointer to AP Connection context\n
* I - result - returned by Traffic admission control\n
*
* \b RETURNS:
*
* TI_OK on success, TI_NOK otherwise.
*
* \sa
*/
static TI_STATUS apConn_qosMngrReportResultCallb (TI_HANDLE hApConn, trafficAdmRequestStatus_e result)
{
apConn_t *pAPConnection = (apConn_t *)hApConn;
AP_CONN_VALIDATE_HANDLE(hApConn);
if (result == STATUS_TRAFFIC_ADM_REQUEST_ACCEPT)
{
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_OK, pAPConnection);
}
else
{
apConn_smEvent(&(pAPConnection->currentState), AP_CONNECT_EVENT_FINISHED_NOT_OK, pAPConnection);
}
return TI_OK;
}
/**
*
* apConn_reportConnStatusToSME
*
* \b Description:
*
* Sends report to SME regarding the connection status
*
* \b ARGS:
*
* I - pAPConnection - pointer to AP Connection context\n
*
* \b RETURNS:
*
* OK on success, NOK otherwise.
*
* \sa
*/
static void apConn_reportConnStatusToSME (apConn_t *pAPConnection)
{
TRACE3(pAPConnection->hReport, REPORT_SEVERITY_INFORMATION, " roamingTrigger = %d, APDisconnectStatusCode = %d, bNonRoamingDisAssocReason = %d\n", pAPConnection->roamReason, pAPConnection->APDisconnect.uStatusCode, pAPConnection->bNonRoamingDisAssocReason);
/* Check if an outside reason caused the disconnection. */
if (pAPConnection->bNonRoamingDisAssocReason)
{
pAPConnection->bNonRoamingDisAssocReason = TI_FALSE;
sme_ReportApConnStatus(pAPConnection->hSme, STATUS_UNSPECIFIED, 0);
}
/* DisAssociation happened due to roaming trigger */
else if (pAPConnection->roamReason == ROAMING_TRIGGER_AP_DISCONNECT)
{ /* AP disconnect is a special case of the status delivered to SME */
mgmtStatus_e mgmtStatus = ( pAPConnection->APDisconnect.bDeAuthenticate ? STATUS_AP_DEAUTHENTICATE : STATUS_AP_DISASSOCIATE );
sme_ReportApConnStatus(pAPConnection->hSme, mgmtStatus, pAPConnection->APDisconnect.uStatusCode);
}
else /* Finally, just send the last roaming trigger */
{
sme_ReportApConnStatus(pAPConnection->hSme, STATUS_ROAMING_TRIGGER, (TI_UINT32)pAPConnection->roamReason);
}
}
void apConn_setDeauthPacketReasonCode(TI_HANDLE hAPConnection, TI_UINT8 deauthReasonCode)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
pAPConnection->deauthPacketReasonCode = deauthReasonCode;
pAPConnection->roamReason = ROAMING_TRIGGER_SECURITY_ATTACK;
}
TI_STATUS apConn_getAssocRoamingTrigger(TI_HANDLE hAPConnection, apConn_roamingTrigger_e *asssocRoamingTrigger)
{
apConn_t *pAPConnection = (apConn_t *)hAPConnection;
*asssocRoamingTrigger = pAPConnection->assocRoamingTrigger;
return TI_OK;
}