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+/*
+ * roamingMngr_manualSM.c
+ *
+ * Copyright(c) 1998 - 2009 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 roamingMngr_manualSM.c
+ * \brief Roaming Manager
+ *
+ * \see roamingMngr_manualSM.h
+ */
+
+/****************************************************************************
+ * *
+ * MODULE: Roaming Manager *
+ * PURPOSE: *
+ * Roaming manager is responsible to receive Roaming triggers and try
+ * to select a better AP.
+ * The Roaming triggers are: Low RSSI, PER, consecutive No ACK on TX,
+ * beacon Missed or External request.
+ * In each Internal Roaming request, scan is performed and selection for
+ * better AP. Better AP is defined as a different AP with better RSSI,
+ * and similar SSID and security settings.
+ * If better AP is found, there is a check for fast-roaming via the
+ * Supplicant. Then connection to the new AP is invoked.
+ * *
+ ****************************************************************************/
+
+#define __FILE_ID__ FILE_ID_136
+#include "osApi.h"
+#include "paramOut.h"
+#include "report.h"
+#include "scanMngrApi.h"
+#include "roamingMngrApi.h"
+#include "roamingMngrTypes.h"
+#include "bssTypes.h"
+#include "DrvMainModules.h"
+#include "TWDriver.h"
+#include "siteMgrApi.h"
+#include "GenSM.h"
+#include "apConnApi.h"
+#include "roamingMngr_manualSM.h"
+#include "EvHandler.h"
+#include "public_types.h"
+
+
+typedef enum
+{
+ REASSOC_RESP_SUCCESS =0,
+ REASSOC_RESP_FAILURE,
+ REASSOC_RESP_REJECT
+} reassociationResp_e;
+
+
+static void roamingMngr_SendReassocEvent(TI_HANDLE hRoamingMngr, reassociationResp_e ReassResp);
+static void roamingMngr_smIdleToStart (TI_HANDLE hRoamingMngr);
+static void roamingMngr_smSTOP (TI_HANDLE hRoamingMngr);
+static void roamingMngr_smConnectedToScan (TI_HANDLE hRoamingMngr);
+static void roamingMngr_smConnectedToHandover(TI_HANDLE hRoamingMngr);
+static void roamingMngr_smScanToConnected(TI_HANDLE hRoamingMngr);
+static void roamingMngr_smHandoverToHandoverConnectEvent (TI_HANDLE hRoamingMngr);
+static void roamingMngr_smHandoverToHandoverFailEvent (TI_HANDLE hRoamingMngr);
+static void roamingMngr_smHandoverToConnectedSuccessEvent(TI_HANDLE hRoamingMngr);
+static void roamingMngr_smHandoverToConnectedRejectEvent(TI_HANDLE hRoamingMngr);
+
+
+/*-----------*/
+/* Constants */
+/*-----------*/
+
+TGenSM_actionCell roamingMngrManual_matrix[ROAMING_MANUAL_NUM_STATES][ROAMING_MANUAL_NUM_EVENTS] =
+{
+ /* next state and actions for IDLE state */
+ {
+ {ROAMING_MANUAL_STATE_CONNECTED, roamingMngr_smIdleToStart}, /* START */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* SCAN */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /*CONNECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* STOP*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* REJECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* SUCCESS*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* FAIL*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* COMPLETE*/
+ },
+ /* next state and actions for CONNECTED state */
+ {
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* START */
+ {ROAMING_MANUAL_STATE_SCAN, roamingMngr_smConnectedToScan}, /* SCAN */
+ {ROAMING_MANUAL_STATE_HANDOVER, roamingMngr_smConnectedToHandover}, /*CONNECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smSTOP}, /* STOP*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* REJECT*/
+ {ROAMING_MANUAL_STATE_CONNECTED, roamingMngr_smNop}, /* SUCCESS* retain CurrAp called */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* FAIL*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* COMPLETE*/
+ },
+ /* next state and actions for SCAN state */
+ {
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* START */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* SCAN */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /*CONNECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smSTOP}, /* STOP*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* REJECT*/
+ {ROAMING_MANUAL_STATE_SCAN, roamingMngr_smNop}, /* SUCCESS* retain CurrAp called */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* FAIL*/
+ {ROAMING_MANUAL_STATE_CONNECTED, roamingMngr_smScanToConnected}, /* COMPLETE*/
+ },
+ /* next state and actions for HANDOVER state */
+ {
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* START */
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected}, /* SCAN */
+ {ROAMING_MANUAL_STATE_HANDOVER,roamingMngr_smHandoverToHandoverConnectEvent}, /*CONNECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smSTOP}, /* STOP*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smHandoverToConnectedRejectEvent}, /* REJECT*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smHandoverToConnectedSuccessEvent}, /* SUCCESS*/
+ {ROAMING_MANUAL_STATE_HANDOVER, roamingMngr_smHandoverToHandoverFailEvent}, /* FAIL*/
+ {ROAMING_MANUAL_STATE_IDLE, roamingMngr_smUnexpected }, /* COMPLETE*/
+ }
+};
+
+TI_INT8* ManualRoamStateDescription[] =
+{
+ "IDLE",
+ "CONNECTED",
+ "SCAN",
+ "HANDOVER"
+};
+
+TI_INT8* ManualRoamEventDescription[] =
+{
+ "START",
+ "SCAN",
+ "CONNECT",
+ "STOP",
+ "REJECT",
+ "SUCCESS",
+ "FAIL",
+ "COMPLETE"
+};
+
+static void roamingMngr_smIdleToStart (TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t* pRoamingMngr;
+
+ pRoamingMngr = (roamingMngr_t*)hRoamingMngr;
+ scanMngr_startManual((TI_HANDLE)pRoamingMngr->hScanMngr);
+}
+
+static void roamingMngr_smSTOP (TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t* pRoamingMngr = (roamingMngr_t*)hRoamingMngr;
+
+ //if (SCAN_ISS_IDLE != pScanMngr->immedScanState || SCAN_CSS_IDLE!= != pScanMngr->contScanState)
+ {
+ roamingMngr_smStopWhileScanning(hRoamingMngr);
+ }
+
+ scanMngr_stopManual(pRoamingMngr->hScanMngr);
+}
+
+
+static void roamingMngr_smConnectedToScan (TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t *pRoamingMngr = (roamingMngr_t*) hRoamingMngr;
+ TI_STATUS status = TI_OK;
+
+ status= apConn_prepareToRoaming(pRoamingMngr->hAPConnection, ROAMING_TRIGGER_NONE);
+
+ if (status == TI_OK)
+ {
+ status = scanMngr_startImmediateScan (pRoamingMngr->hScanMngr,TI_FALSE);
+ }
+ else
+ {
+ roamingMngr_smEvent(ROAMING_MANUAL_EVENT_COMPLETE, hRoamingMngr);
+ }
+}
+
+static void roamingMngr_smConnectedToHandover(TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t *pRoamingMngr = (roamingMngr_t*)hRoamingMngr;
+ TI_STATUS status = TI_OK;
+
+ pRoamingMngr->handoverWasPerformed = TI_TRUE;
+ status= apConn_prepareToRoaming(pRoamingMngr->hAPConnection, pRoamingMngr->roamingTrigger);
+
+ if (status == TI_OK)
+ {
+ apConn_connectToAP(pRoamingMngr->hAPConnection, &(pRoamingMngr->targetAP.newAP), &(pRoamingMngr->targetAP.connRequest), TI_TRUE);
+ }
+ else
+ {
+ roamingMngr_smEvent(ROAMING_MANUAL_EVENT_REJECT, hRoamingMngr);
+ }
+}
+
+static void roamingMngr_smScanToConnected(TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t *pRoamingMngr = (roamingMngr_t*) hRoamingMngr;
+ apConn_connRequest_t request;
+
+ request.dataBufLength = 0;
+ request.requestType = AP_CONNECT_RETAIN_CURR_AP;
+ apConn_connectToAP(pRoamingMngr->hAPConnection, NULL , &request , TI_FALSE);
+}
+
+static void roamingMngr_smHandoverToHandoverConnectEvent (TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_t *pRoamingMngr = (roamingMngr_t*) hRoamingMngr;
+
+ apConn_connectToAP(pRoamingMngr->hAPConnection, &(pRoamingMngr->targetAP.newAP), &(pRoamingMngr->targetAP.connRequest), TI_TRUE);
+}
+
+static void roamingMngr_smHandoverToHandoverFailEvent (TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_SendReassocEvent(hRoamingMngr, REASSOC_RESP_FAILURE);
+}
+
+static void roamingMngr_smHandoverToConnectedSuccessEvent(TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_SendReassocEvent(hRoamingMngr, REASSOC_RESP_SUCCESS);
+}
+
+static void roamingMngr_smHandoverToConnectedRejectEvent(TI_HANDLE hRoamingMngr)
+{
+ roamingMngr_SendReassocEvent(hRoamingMngr, REASSOC_RESP_REJECT);
+}
+
+static void roamingMngr_SendReassocEvent(TI_HANDLE hRoamingMngr, reassociationResp_e ReassResp)
+{
+ roamingMngr_t *pRoamingMngr = (roamingMngr_t*) hRoamingMngr;
+
+ TRACE1(pRoamingMngr->hReport, REPORT_SEVERITY_INFORMATION, "roamingMngr_SendReassocEvent(): %d \n", ReassResp);
+ EvHandlerSendEvent(pRoamingMngr->hEvHandler,
+ IPC_EVENT_REASSOCIATION_RESP,
+ (TI_UINT8*)(&ReassResp),
+ sizeof(reassociationResp_e));
+}
+
+
+
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