| /* |
| * 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)); |
| } |
| |
| |
| |
