| /* |
| * ScanCncnSm.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 ScanCncnSm.c |
| * \brief Scan concentrator state machine implementation |
| * |
| * \see ScanCncnSm.h, ScanCncnSmSpecific.c |
| */ |
| |
| |
| #define __FILE_ID__ FILE_ID_79 |
| #include "osTIType.h" |
| #include "GenSM.h" |
| #include "ScanCncnSm.h" |
| #include "report.h" |
| |
| /* state machine action functions */ |
| static void scanCncnSm_RequestScr (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_StartScan (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_StopScan (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_ScanComplete (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_Nop (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_ActionUnexpected (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_RejectScan (TI_HANDLE hScanCncnClient); |
| static void scanCncnSm_Recovery (TI_HANDLE hScanCncnClient); |
| |
| |
| static TGenSM_actionCell tSmMatrix[ SCAN_CNCN_SM_NUMBER_OF_STATES ][ SCAN_CNCN_SM_NUMBER_OF_EVENTS ] = |
| { |
| { /* SCAN_CNCN_SM_STATE_IDLE */ |
| { SCAN_CNCN_SM_STATE_SCR_WAIT, scanCncnSm_RequestScr }, /* SCAN_CNCN_SM_EVENT_START */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_RUN */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_SCAN_COMPLETE */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_STOP */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_ABORT */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_RECOVERY */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ActionUnexpected } /* SCAN_CNCN_SM_EVENT_REJECT */ |
| }, |
| { /* SCAN_CNCN_SM_STATE_SCR_WAIT */ |
| { SCAN_CNCN_SM_STATE_SCR_WAIT, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_START */ |
| { SCAN_CNCN_SM_STATE_SCANNING, scanCncnSm_StartScan }, /* SCAN_CNCN_SM_EVENT_RUN */ |
| { SCAN_CNCN_SM_STATE_SCR_WAIT, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_SCAN_COMPLETE */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_RejectScan }, /* SCAN_CNCN_SM_EVENT_STOP */ |
| { SCAN_CNCN_SM_STATE_SCR_WAIT, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_ABORT */ |
| { SCAN_CNCN_SM_STATE_SCR_WAIT, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_RECOVERY */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_RejectScan } /* SCAN_CNCN_SM_EVENT_REJECT */ |
| }, |
| { /* SCAN_CNCN_SM_STATE_SCANNING */ |
| { SCAN_CNCN_SM_STATE_SCANNING, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_START */ |
| { SCAN_CNCN_SM_STATE_SCANNING, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_RUN */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ScanComplete }, /* SCAN_CNCN_SM_EVENT_SCAN_COMPLETE */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_StopScan }, /* SCAN_CNCN_SM_EVENT_STOP */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_StopScan }, /* SCAN_CNCN_SM_EVENT_ABORT */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_Recovery }, /* SCAN_CNCN_SM_EVENT_RECOVERY */ |
| { SCAN_CNCN_SM_STATE_SCANNING, scanCncnSm_ActionUnexpected } /* SCAN_CNCN_SM_EVENT_REJECT */ |
| }, |
| { /* SCAN_CNCN_SM_STATE_STOPPING */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_START */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_ActionUnexpected }, /* SCAN_CNCN_SM_EVENT_RUN */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_ScanComplete }, /* SCAN_CNCN_SM_EVENT_SCAN_COMPLETE */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_Nop }, /* SCAN_CNCN_SM_EVENT_STOP */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_Nop }, /* SCAN_CNCN_SM_EVENT_ABORT */ |
| { SCAN_CNCN_SM_STATE_IDLE, scanCncnSm_Recovery }, /* SCAN_CNCN_SM_EVENT_RECOVERY */ |
| { SCAN_CNCN_SM_STATE_STOPPING, scanCncnSm_ActionUnexpected } /* SCAN_CNCN_SM_EVENT_REJECT */ |
| } |
| }; |
| |
| static TI_INT8* uStateDescription[] = |
| { |
| "IDLE", |
| "SCR_WAIT", |
| "SCANNING", |
| "STOPPING" |
| }; |
| |
| static TI_INT8* uEventDescription[] = |
| { |
| "START", |
| "RUN", |
| "SCAN_COMPLETE", |
| "STOP", |
| "ABORT", |
| "RECOVERY", |
| "REJECT", |
| }; |
| |
| /** |
| * \fn scanCncnSm_Create |
| * \brief Cerates a scan concentrator client object |
| * |
| * Cerates a scan concentrator client - allocates object and create a state-machine instance |
| * |
| * \param hOS - handle to the OS object |
| * \return Handle to the new scan concentrator client object |
| * \sa scanCncnSm_Init, scanCncnSm_Destroy |
| */ |
| TI_HANDLE scanCncnSm_Create (TI_HANDLE hOS) |
| { |
| TScanCncnClient *pScanCncnClient; |
| |
| /* allocate space for the scan concentartor client object */ |
| pScanCncnClient = os_memoryAlloc (hOS, sizeof (TScanCncnClient)); |
| if (NULL == pScanCncnClient) |
| { |
| WLAN_OS_REPORT (("scanCncnSm_Cretae: not enough space for scan concentrator client object\n")); |
| return NULL; |
| } |
| |
| /* store the OS object handle */ |
| pScanCncnClient->hOS = hOS; |
| |
| /* allocate the state machine object */ |
| pScanCncnClient->hGenSM = genSM_Create (hOS); |
| if (NULL == pScanCncnClient->hGenSM) |
| { |
| WLAN_OS_REPORT (("scanCncnSm_Cretae: not enough space for scan concentrator client state-machine\n")); |
| return NULL; |
| } |
| |
| /* return the new object */ |
| return (TI_HANDLE)pScanCncnClient; |
| } |
| |
| /** |
| * \fn scanCncnSm_Init |
| * \brief Initialize a scan concentartor client object |
| * |
| * Initialize a scan concentartor client object - store handles and specific SM functions |
| * |
| * \note Some of the values (e.g. scan result CB( are initialized from the main scan concentartor object) |
| * \param hScanCncnClient - handle to the scan concnentrator client object |
| * \param hReport - handle to the report object |
| * \param hTWD - handle to the TWD object |
| * \param hSCR - handle to the SCR object |
| * \param hApConn - handle to the AP connection object |
| * \param hMlme - handle to the MLME object |
| * \param fScrRequest - SM specific SCR request finction |
| * \param fScrRelease - SM specific SCR release finction |
| * \param fStartScan - SM specific scan start finction |
| * \param fStopScan - SM specific scan stop finction |
| * \param fRecovery - SM specific recovery handling function |
| * \param pScanSmName - state machine name |
| * \return None |
| * \sa scanCncnSm_Cretae |
| */ |
| void scanCncnSm_Init (TI_HANDLE hScanCncnClient, TI_HANDLE hReport, TI_HANDLE hTWD, TI_HANDLE hSCR, |
| TI_HANDLE hApConn, TI_HANDLE hMlme, TI_HANDLE hScanCncn, TScanPrivateSMFunction fScrRequest, |
| TScanPrivateSMFunction fScrRelease, TScanPrivateSMFunction fStartScan, |
| TScanPrivateSMFunction fStopScan, TScanPrivateSMFunction fRecovery, TI_INT8* pScanSmName) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| /* store handles */ |
| pScanCncnClient->hReport = hReport; |
| pScanCncnClient->hTWD = hTWD; |
| pScanCncnClient->hSCR = hSCR; |
| pScanCncnClient->hApConn = hApConn; |
| pScanCncnClient->hMlme = hMlme; |
| pScanCncnClient->hScanCncn = hScanCncn; |
| |
| /* store private functions */ |
| pScanCncnClient->fScrRequest = fScrRequest; |
| pScanCncnClient->fScrRelease = fScrRelease; |
| pScanCncnClient->fStartScan = fStartScan; |
| pScanCncnClient->fStopScan = fStopScan; |
| pScanCncnClient->fRecovery = fRecovery; |
| |
| /* store SM name */ |
| pScanCncnClient->pScanSmName = pScanSmName; |
| |
| /* initialize the state-machine */ |
| genSM_Init (pScanCncnClient->hGenSM, hReport); |
| genSM_SetDefaults (pScanCncnClient->hGenSM, SCAN_CNCN_SM_NUMBER_OF_STATES, SCAN_CNCN_SM_NUMBER_OF_EVENTS, |
| (TGenSM_matrix)tSmMatrix, SCAN_CNCN_SM_STATE_IDLE, pScanCncnClient->pScanSmName, uStateDescription, |
| uEventDescription, __FILE_ID__); |
| } |
| |
| /** |
| * \fn scanCncnSm_Destroy |
| * \brief Destroys a scan concentartor client object |
| * |
| * Destroys a scan concentartor client object. destroys the state-machine object and |
| * de-allcoates system resources |
| * |
| * \param hScanCncnClient - handle to the scan concnentrator client object |
| * \return None |
| * \sa scanCncnSm_Cretae |
| */ |
| void scanCncnSm_Destroy (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| /* free the state-machine */ |
| genSM_Unload (pScanCncnClient->hGenSM); |
| |
| /* Free object storage space */ |
| os_memoryFree (pScanCncnClient->hOS, hScanCncnClient, sizeof (TScanCncnClient)); |
| } |
| |
| /** |
| * \fn scanCncnSm_RequestScr |
| * \brief Scan concentartor SM action function for SCR request |
| * |
| * Calls the Sm specific SCR request function |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_RequestScr (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_RequestScr: SM requesting SCR\n"); |
| |
| /* |
| * just call the specific SCR request function, it will send an event if necessary |
| * according to SCR return code by itself |
| */ |
| pScanCncnClient->fScrRequest (hScanCncnClient); |
| } |
| |
| /** |
| * \fn scanCncnSm_StartScan |
| * \brief Scan concentrator SM action function for starting scan |
| * |
| * Register for MLME CB and call the SM specific scan start function |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_StartScan (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_StartScan: SM attempting to start scan.\n"); |
| |
| /* set scan result counter and flag */ |
| pScanCncnClient->uResultCounter = 0; |
| pScanCncnClient->uResultExpectedNumber = 0; |
| pScanCncnClient->bScanCompletePending = TI_FALSE; |
| pScanCncnClient->bScanRejectedOn2_4 = TI_FALSE; |
| |
| /* call the specific start scan command. It will handle errors by itself */ |
| pScanCncnClient->fStartScan (hScanCncnClient); |
| } |
| |
| /** |
| * \fn scanCncnSm_StopScan |
| * \brief Scan concentrator SM action function for stoping scan by outside request |
| * |
| * Calls the SM specific stop scan function |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_StopScan (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_StopScan: SM is attempting to stop scan\n"); |
| |
| /* call the scan SRV stop scan */ |
| pScanCncnClient->fStopScan (hScanCncnClient); |
| } |
| |
| /** |
| * \fn scanCncnSm_ScanComplete |
| * \brief Scan concentrator SM action function for scan complete |
| * |
| * Unregister MLME, release SCR and call client scan complete CB, if not running within a request context |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_ScanComplete (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_ScanComplete: SM received scan complete event\n"); |
| |
| /* release the SCR */ |
| pScanCncnClient->fScrRelease (hScanCncnClient); |
| |
| /* Call the client scan complete callback */ |
| if (TI_FALSE == pScanCncnClient->bInRequest) |
| { |
| pScanCncnClient->tScanResultCB (pScanCncnClient->hScanResultCBObj, |
| pScanCncnClient->eScanResult, NULL, pScanCncnClient->uSPSScanResult); |
| } |
| } |
| |
| /** |
| * \fn scanCncnSm_Nop |
| * \brief Scan concentrator SM action function for no operation |
| * |
| * Used when no operation is required not due to an error |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_Nop (TI_HANDLE hScanCncnClient) |
| { |
| } |
| |
| /** |
| * \fn ScanCncnSm_ActionUnexpected |
| * \brief Scan concentrator SM action function for unexpected events |
| * |
| * Print an error message |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_ActionUnexpected (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_ERROR , "ScanCncnSm_ActionUnexpected: Unexpected event for current state\n"); |
| |
| /* mark the scan status as failed */ |
| pScanCncnClient->eScanResult = SCAN_CRS_SCAN_FAILED; |
| } |
| |
| /** |
| * \fn scanCncnSm_RejectScan |
| * \brief Scan concentrator SM action function for rejecting a scan by the SCR |
| * |
| * Releases the SCR and calls the client scan complete CB, if not running within a request context |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_RejectScan (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_RejectScan: SM received reject event\n"); |
| |
| pScanCncnClient->bScanRejectedOn2_4 = TI_TRUE; |
| /* release the SCR */ |
| pScanCncnClient->fScrRelease (hScanCncnClient); |
| |
| /* Call the client scan complete CB */ |
| if (TI_FALSE == pScanCncnClient->bInRequest) |
| { |
| pScanCncnClient->tScanResultCB (pScanCncnClient->hScanResultCBObj, pScanCncnClient->eScanResult, |
| NULL, pScanCncnClient->uSPSScanResult); |
| } |
| } |
| |
| /** |
| * \fn scanCncnSm_Recovery |
| * \brief Scan concentrator SM action function for handling recovery during scan |
| * |
| * Calls the SM specific recovery handling function and send a scan complete event. Used to stop timer |
| * on one-shot scans |
| * |
| * \param hScanCncnClient - Handle to the scan concentrator client object |
| * \return None |
| */ |
| void scanCncnSm_Recovery (TI_HANDLE hScanCncnClient) |
| { |
| TScanCncnClient *pScanCncnClient = (TScanCncnClient*)hScanCncnClient; |
| |
| TRACE0(pScanCncnClient->hReport, REPORT_SEVERITY_INFORMATION , "scanCncnSm_Recovery: SM received reject event\n"); |
| |
| /* Call the recovery specific function */ |
| pScanCncnClient->fRecovery (hScanCncnClient); |
| |
| /* Call the client scan complete callback */ |
| if (TI_FALSE == pScanCncnClient->bInRequest) |
| { |
| pScanCncnClient->tScanResultCB (pScanCncnClient->hScanResultCBObj, |
| pScanCncnClient->eScanResult, NULL, pScanCncnClient->uSPSScanResult); |
| } |
| } |
| |
