| /* |
| * Copyright (c) 2011-2017 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| |
| /** ------------------------------------------------------------------------- * |
| ------------------------------------------------------------------------- * |
| |
| |
| \file csrNeighborRoam.c |
| |
| Implementation for the simple roaming algorithm for 802.11r Fast transitions and Legacy roaming for Android platform. |
| ========================================================================== */ |
| |
| /*=========================================================================== |
| |
| EDIT HISTORY FOR FILE |
| |
| |
| This section contains comments describing changes made to the module. |
| Notice that changes are listed in reverse chronological order. |
| |
| |
| |
| when who what, where, why |
| ---------- --- -------------------------------------------------------- |
| 08/01/10 Murali Created |
| |
| ===========================================================================*/ |
| #ifdef WLAN_FEATURE_NEIGHBOR_ROAMING |
| #include "wlan_qct_wda.h" |
| #include "palApi.h" |
| #include "csrInsideApi.h" |
| #include "smsDebug.h" |
| #include "logDump.h" |
| #include "smeQosInternal.h" |
| #include "wlan_qct_tl.h" |
| #include "smeInside.h" |
| #include "vos_diag_core_event.h" |
| #include "vos_diag_core_log.h" |
| #include "csrApi.h" |
| #include "wlan_qct_tl.h" |
| #include "sme_Api.h" |
| #include "csrNeighborRoam.h" |
| #include "macTrace.h" |
| #if defined(FEATURE_WLAN_ESE) && !defined(FEATURE_WLAN_ESE_UPLOAD) |
| #include "csrEse.h" |
| #endif |
| |
| #define WLAN_FEATURE_NEIGHBOR_ROAMING_DEBUG 1 |
| #ifdef WLAN_FEATURE_NEIGHBOR_ROAMING_DEBUG |
| #define NEIGHBOR_ROAM_DEBUG smsLog |
| #else |
| #define NEIGHBOR_ROAM_DEBUG(x...) |
| #endif |
| |
| static void csrNeighborRoamResetChannelInfo(tpCsrNeighborRoamChannelInfo rChInfo); |
| static void csrNeighborRoamResetCfgListChanScanControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId); |
| static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId); |
| static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac, |
| tANI_U8 sessionId); |
| |
| VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| v_PVOID_t pUserCtxt, |
| v_S7_t avgRssi); |
| VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification, |
| v_PVOID_t pUserCtxt, |
| v_S7_t avgRssi); |
| void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus); |
| eHalStatus csrRoamCopyConnectedProfile(tpAniSirGlobal pMac, tANI_U32 sessionId, tCsrRoamProfile *pDstProfile ); |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac, |
| tANI_U8 sessionId); |
| VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac, |
| tANI_U8 sessionId); |
| #endif |
| |
| v_U8_t *csrNeighborRoamStateToString(v_U8_t state) |
| { |
| switch(state) |
| { |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_CLOSED ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_INIT ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_CONNECTED ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING ); |
| CASE_RETURN_STRING( eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE ); |
| default: |
| return "eCSR_NEIGHBOR_ROAM_STATE_UNKNOWN"; |
| } |
| |
| } |
| |
| /* State Transition macro */ |
| void csr_neighbor_roam_state_transition(tpAniSirGlobal mac_ctx, |
| uint8_t newstate, uint8_t session) |
| { |
| mac_ctx->roam.neighborRoamInfo[session].prevNeighborRoamState = |
| mac_ctx->roam.neighborRoamInfo[session].neighborRoamState; |
| mac_ctx->roam.neighborRoamInfo[session].neighborRoamState = newstate; |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| FL("Session id(%d) NeighborRoam Transition from %s ==> %s"), |
| session, |
| csrNeighborRoamStateToString ( |
| mac_ctx->roam.neighborRoamInfo[session].prevNeighborRoamState), |
| csrNeighborRoamStateToString (newstate)); |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamFreeNeighborRoamBSSNode |
| |
| \brief This function frees all the internal pointers CSR NeighborRoam BSS Info |
| and also frees the node itself |
| |
| \param pMac - The handle returned by macOpen. |
| neighborRoamBSSNode - Neighbor Roam BSS Node to be freed |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csrNeighborRoamFreeNeighborRoamBSSNode(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo neighborRoamBSSNode) |
| { |
| if (neighborRoamBSSNode) |
| { |
| if (neighborRoamBSSNode->pBssDescription) |
| { |
| vos_mem_free(neighborRoamBSSNode->pBssDescription); |
| neighborRoamBSSNode->pBssDescription = NULL; |
| } |
| vos_mem_free(neighborRoamBSSNode); |
| neighborRoamBSSNode = NULL; |
| } |
| |
| return; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamRemoveRoamableAPListEntry |
| |
| \brief This function removes a given entry from the given list |
| |
| \param pMac - The handle returned by macOpen. |
| pList - The list from which the entry should be removed |
| pNeighborEntry - Neighbor Roam BSS Node to be removed |
| |
| \return TRUE if successfully removed, else FALSE |
| |
| ---------------------------------------------------------------------------*/ |
| tANI_BOOLEAN csrNeighborRoamRemoveRoamableAPListEntry(tpAniSirGlobal pMac, |
| tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| { |
| if(pList) |
| { |
| return csrLLRemoveEntry(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| } |
| |
| smsLog(pMac, LOGE, FL("Removing neighbor BSS node from list failed. Current count = %d"), csrLLCount(pList)); |
| |
| return eANI_BOOLEAN_FALSE; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamGetRoamableAPListNextEntry |
| |
| \brief Gets the entry next to passed entry. If NULL is passed, return the entry in the head of the list |
| |
| \param pMac - The handle returned by macOpen. |
| pList - The list from which the entry should be returned |
| pNeighborEntry - Neighbor Roam BSS Node whose next entry should be returned |
| |
| \return Neighbor Roam BSS Node to be returned |
| |
| ---------------------------------------------------------------------------*/ |
| tpCsrNeighborRoamBSSInfo csrNeighborRoamGetRoamableAPListNextEntry(tpAniSirGlobal pMac, |
| tDblLinkList *pList, tpCsrNeighborRoamBSSInfo pNeighborEntry) |
| { |
| tListElem *pEntry = NULL; |
| tpCsrNeighborRoamBSSInfo pResult = NULL; |
| |
| if(pList) |
| { |
| if(NULL == pNeighborEntry) |
| { |
| pEntry = csrLLPeekHead(pList, LL_ACCESS_LOCK); |
| } |
| else |
| { |
| pEntry = csrLLNext(pList, &pNeighborEntry->List, LL_ACCESS_LOCK); |
| } |
| if(pEntry) |
| { |
| pResult = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| } |
| } |
| |
| return pResult; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamFreeRoamableBSSList |
| |
| \brief Empties and frees all the nodes in the roam able AP list |
| |
| \param pMac - The handle returned by macOpen. |
| pList - Neighbor Roam BSS List to be emptied |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csrNeighborRoamFreeRoamableBSSList(tpAniSirGlobal pMac, tDblLinkList *pList) |
| { |
| tpCsrNeighborRoamBSSInfo pResult = NULL; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Emptying the BSS list. Current count = %d"), csrLLCount(pList)); |
| |
| /* Pick up the head, remove and free the node till the list becomes empty */ |
| while ((pResult = csrNeighborRoamGetRoamableAPListNextEntry(pMac, pList, NULL)) != NULL) |
| { |
| csrNeighborRoamRemoveRoamableAPListEntry(pMac, pList, pResult); |
| csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pResult); |
| } |
| return; |
| } |
| |
| static void csrNeighborRoamTriggerHandoff(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| if ((pNeighborRoamInfo->is11rAssoc) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && !csrRoamIsRoamOffloadScanEnabled(pMac) |
| #endif |
| ) |
| { |
| if ((eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) || |
| (eSME_ROAM_TRIGGER_FAST_ROAM == pNeighborRoamInfo->cfgRoamEn)) |
| { |
| csrNeighborRoamIssuePreauthReq(pMac, sessionId); |
| pNeighborRoamInfo->cfgRoamEn = eSME_ROAM_TRIGGER_NONE; |
| vos_mem_set(&pNeighborRoamInfo->cfgRoambssId[0], |
| sizeof(pNeighborRoamInfo->cfgRoambssId), |
| 0xFF); |
| } |
| else |
| { |
| smsLog(pMac, LOGE, FL("11R Reassoc indication received in unexpected state %s"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| VOS_ASSERT(0); |
| } |
| } |
| else |
| #endif |
| |
| #ifdef FEATURE_WLAN_ESE |
| if ((pNeighborRoamInfo->isESEAssoc) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && !csrRoamIsRoamOffloadScanEnabled(pMac) |
| #endif |
| ) |
| { |
| if (eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| { |
| csrNeighborRoamIssuePreauthReq(pMac, sessionId); |
| } |
| else |
| { |
| smsLog(pMac, LOGE, FL("CCX Reassoc indication received in unexpected state %s"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| VOS_ASSERT(0); |
| } |
| } |
| else |
| #endif |
| #ifdef FEATURE_WLAN_LFR |
| if (csrRoamIsFastRoamEnabled(pMac, sessionId)) |
| { |
| if ((eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| || csrRoamIsRoamOffloadScanEnabled(pMac) || |
| (eSME_ROAM_TRIGGER_FAST_ROAM == pNeighborRoamInfo->cfgRoamEn) |
| #endif |
| ) |
| { |
| csrNeighborRoamIssuePreauthReq(pMac, sessionId); |
| pNeighborRoamInfo->cfgRoamEn = eSME_ROAM_TRIGGER_NONE; |
| vos_mem_set(&pNeighborRoamInfo->cfgRoambssId[0], |
| sizeof(pNeighborRoamInfo->cfgRoambssId), |
| 0xFF); |
| } |
| else |
| { |
| smsLog(pMac, LOGE, FL("LFR Reassoc indication received in unexpected state %s"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| VOS_ASSERT(0); |
| } |
| } |
| else |
| #endif |
| { |
| if (eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN == pNeighborRoamInfo->neighborRoamState) |
| { |
| csrNeighborRoamRequestHandoff(pMac, sessionId); |
| } |
| else |
| { |
| smsLog(pMac, LOGE, FL("Non-11R Reassoc indication received in unexpected state %s or Roaming is disabled"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| } |
| } |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamUpdateFastRoamingEnabled(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| const v_BOOL_t fastRoamEnabled) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| { |
| if (VOS_TRUE == fastRoamEnabled) |
| { |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_START, |
| REASON_CONNECT); |
| } else { |
| #endif |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering neighbor lookup " |
| "DOWN event with TL, RSSI = %d"), |
| pNeighborRoamInfo->currentNeighborLookupThreshold); |
| |
| /* Both pMac and sessionId are required to identify for which |
| * session the indication is being received |
| */ |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Memory allocation failure")); |
| return VOS_STATUS_E_NOMEM; |
| } |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| |
| /* Register Neighbor Lookup threshold callback with TL for |
| DOWN event only */ |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamNeighborLookupDOWNCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| vos_mem_free(pUsrCtx); |
| if (!VOS_IS_STATUS_SUCCESS(vosStatus)) { |
| smsLog(pMac, LOGW, |
| FL("Failed to register RSSI indication callback = %d"), |
| vosStatus); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| else if (VOS_FALSE == fastRoamEnabled) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Currently in CONNECTED state, so deregister all events")); |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_STOP, |
| REASON_DISCONNECTED); |
| } else { |
| #endif |
| csrNeighborRoamDeregAllRssiIndication(pMac, sessionId); |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Currently in INIT state, Nothing to do")); |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Unexpected state %s, returning failure"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| #ifdef FEATURE_WLAN_ESE |
| VOS_STATUS csrNeighborRoamUpdateEseModeEnabled(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| const v_BOOL_t eseMode) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| { |
| if (VOS_TRUE == eseMode) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Registering neighbor lookup DOWN event with TL, RSSI = %d"), |
| pNeighborRoamInfo->currentNeighborLookupThreshold); |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_START, |
| REASON_CONNECT); |
| } else { |
| #endif |
| /* This user context data will be returned with callback */ |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Memory allocation failure")); |
| return VOS_STATUS_E_NOMEM; |
| } |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| |
| /* Register Neighbor Lookup threshold callback with TL for DOWN event only */ |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamNeighborLookupDOWNCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| vos_mem_free(pUsrCtx); |
| if (!VOS_IS_STATUS_SUCCESS(vosStatus)) { |
| smsLog(pMac, LOGW, |
| FL("Failed to register RSSI indication callback: Status = %d"), |
| vosStatus); |
| |
| /* Registration failed, free the user context */ |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| else if (VOS_FALSE == eseMode) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, so deregister all events")); |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_STOP, |
| REASON_DISCONNECTED); |
| } else { |
| #endif |
| csrNeighborRoamDeregAllRssiIndication(pMac, sessionId); |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT == |
| pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, Nothing to do")); |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Unexpected state %d, returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| #endif |
| |
| |
| VOS_STATUS csrNeighborRoamSetLookupRssiThreshold(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t neighborLookupRssiThreshold) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == |
| pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("In CONNECTED state, re-register for DOWN event only")); |
| |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold = |
| neighborLookupRssiThreshold; |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_LOOKUP_THRESH_CHANGED); |
| } |
| else |
| { |
| #endif |
| csrNeighborRoamDeregAllRssiIndication(pMac, sessionId); |
| |
| /* This user context data will be returned with callback */ |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Memory allocation failure")); |
| return VOS_STATUS_E_NOMEM; |
| } |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Registering neighbor lookup DOWN event with TL, RSSI = %d"), |
| pNeighborRoamInfo->currentNeighborLookupThreshold); |
| |
| /* Register Neighbor Lookup threshold callback with TL for DOWN event only */ |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamNeighborLookupDOWNCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| vos_mem_free(pUsrCtx); |
| if (!VOS_IS_STATUS_SUCCESS(vosStatus)) { |
| smsLog(pMac, LOGE, |
| FL("Failed to register DOWN event with TL: Status = %d"), |
| vosStatus); |
| |
| /* Registration failed, free the user context */ |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, safe to set lookupRssi threshold")); |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold = |
| neighborLookupRssiThreshold; |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Unexpected state %s, returning failure"), |
| macTraceGetNeighbourRoamState(pNeighborRoamInfo->neighborRoamState)); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamSetOpportunisticScanThresholdDiff(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t nOpportunisticThresholdDiff) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in CONNECTED state, so deregister " |
| "all and re-register for DOWN event again")); |
| |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, |
| sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_OPPORTUNISTIC_THRESH_DIFF_CHANGED); |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in INIT state, safe to set " |
| "opportunistic threshold diff")); |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamSetRoamRescanRssiDiff(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t nRoamRescanRssiDiff) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in CONNECTED state, so deregister " |
| "all and re-register for DOWN event again")); |
| |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, |
| sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_RESCAN_RSSI_DIFF_CHANGED); |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in INIT state, safe to set roam " |
| "rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = nRoamRescanRssiDiff; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamSetRoamBmissFirstBcnt(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t nRoamBmissFirstBcnt) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in CONNECTED state, so deregister all and re-register for DOWN event again")); |
| |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = nRoamBmissFirstBcnt; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, |
| sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BMISS_FIRST_BCNT_CHANGED); |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in INIT state, safe to set roam rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = nRoamBmissFirstBcnt; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamSetRoamBmissFinalBcnt(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t nRoamBmissFinalBcnt) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in CONNECTED state, so deregister all and re-register for DOWN event again")); |
| |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = nRoamBmissFinalBcnt; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BMISS_FINAL_BCNT_CHANGED); |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in INIT state, safe to set roam rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = nRoamBmissFinalBcnt; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| |
| VOS_STATUS |
| csrNeighborRoamSetRoamBeaconRssiWeight(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| v_U8_t nRoamBeaconRssiWeight) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in CONNECTED state, so deregister all and re-register for DOWN event again")); |
| |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = nRoamBeaconRssiWeight; |
| |
| /* De-register existing lookup UP/DOWN, Rssi indications */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pMac->roam.configParam.isRoamOffloadScanEnabled) |
| { |
| csrRoamOffloadScan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BEACON_RSSI_WEIGHT_CHANGED); |
| } |
| #endif |
| } |
| else if (eCSR_NEIGHBOR_ROAM_STATE_INIT |
| == pNeighborRoamInfo->neighborRoamState) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL("Currently in INIT state, safe to set roam rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| return vosStatus; |
| } |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamReassocIndCallback |
| |
| \brief Reassoc callback invoked by TL on crossing the registered re-assoc threshold. |
| Directly trigger HO in case of non-11r association |
| In case of 11R association, triggers a pre-auth eventually followed by actual HO |
| |
| \param pAdapter - VOS Context |
| trafficStatus - UP/DOWN indication from TL |
| pUserCtxt - Parameter for callback registered during callback registration. Should be pMac |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| VOS_STATUS csrNeighborRoamReassocIndCallback(v_PVOID_t pAdapter, |
| v_U8_t trafficStatus, |
| v_PVOID_t pUserCtxt, |
| v_S7_t avgRssi) |
| { |
| tFTRoamCallbackUsrCtx *pUsrCtx = (tFTRoamCallbackUsrCtx *)pUserCtxt; |
| tANI_U8 sessionId = pUsrCtx->sessionId; |
| tpAniSirGlobal pMac = pUsrCtx->pMac; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| |
| if (eSME_ROAM_TRIGGER_FAST_ROAM != pNeighborRoamInfo->cfgRoamEn) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Deregistering DOWN event reassoc callback with TL. " |
| "Threshold RSSI = %d Reported RSSI = %d"), |
| pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| avgRssi); |
| |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamReassocIndCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| //err msg |
| smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d"), vosStatus); |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Rcvd reassoc notification-deregister UP indication. Threshold RSSI = %d Reported RSSI = %d"), |
| NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1), avgRssi); |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1), |
| WLANTL_HO_THRESHOLD_UP, |
| csrNeighborRoamNeighborLookupUPCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| //err msg |
| smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamNeighborLookupUPCallback with TL: Status = %d"), vosStatus); |
| } |
| } |
| /* We dont need to run this timer any more. */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborResultsRefreshTimer); |
| vos_timer_stop(&pNeighborRoamInfo->emptyScanRefreshTimer); |
| |
| csrNeighborRoamTriggerHandoff(pMac, sessionId); |
| vos_mem_free(pUsrCtx); |
| |
| return VOS_STATUS_SUCCESS; |
| } |
| |
| /*CleanUP Routines*/ |
| static void csrNeighborRoamResetChannelInfo(tpCsrNeighborRoamChannelInfo rChInfo) |
| { |
| if ((rChInfo->IAPPNeighborListReceived == FALSE) && |
| (rChInfo->currentChannelListInfo.numOfChannels)) |
| { |
| rChInfo->currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| rChInfo->currentChannelListInfo.numOfChannels = 0; |
| |
| if (rChInfo->currentChannelListInfo.ChannelList) |
| vos_mem_free(rChInfo->currentChannelListInfo.ChannelList); |
| |
| rChInfo->currentChannelListInfo.ChannelList = NULL; |
| rChInfo->chanListScanInProgress = eANI_BOOLEAN_FALSE; |
| } |
| else |
| { |
| rChInfo->currentChanIndex = 0; |
| rChInfo->chanListScanInProgress = eANI_BOOLEAN_TRUE; |
| } |
| } |
| |
| static void csrNeighborRoamResetCfgListChanScanControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| /* Stop neighbor scan timer */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer); |
| |
| /* Stop neighbor scan results refresh timer */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborResultsRefreshTimer); |
| |
| /* Stop empty scan results refresh timer */ |
| vos_timer_stop(&pNeighborRoamInfo->emptyScanRefreshTimer); |
| |
| /* Abort any ongoing scan */ |
| if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending) |
| { |
| csrScanAbortMacScan(pMac, sessionId, eCSR_SCAN_ABORT_DEFAULT); |
| } |
| pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| |
| /* Reset roam channel list information */ |
| csrNeighborRoamResetChannelInfo(&pNeighborRoamInfo->roamChannelInfo); |
| } |
| |
| static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR) |
| pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE; |
| /* Purge pre-auth fail list */ |
| csrNeighborRoamPurgePreauthFailedList(pMac); |
| #endif |
| |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| /* Do not free up the preauth done list here */ |
| pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| #endif |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| vos_mem_zero(&pNeighborRoamInfo->handoffReqInfo, |
| sizeof(tCsrHandoffRequest)); |
| #endif |
| } |
| |
| static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Deregister neighbor lookup UP callback with TL. RSSI = %d"), |
| NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1)); |
| |
| /* Deregister reassoc callback. Ignore return status */ |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1), |
| WLANTL_HO_THRESHOLD_UP, |
| csrNeighborRoamNeighborLookupUPCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| smsLog(pMac, LOGW, |
| FL("Couldn't deregister csrNeighborRoamNeighborLookupUPCallback with TL: Status = %d"), |
| vosStatus); |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Deregistering reassoc DOWN callback with TL. RSSI = %d"), |
| pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| |
| /* Deregister reassoc callback. Ignore return status */ |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamReassocIndCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| smsLog(pMac, LOGW, |
| FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d"), |
| vosStatus); |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Deregistering neighborLookup DOWN callback with TL. RSSI = %d"), |
| pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| |
| /* Deregister neighbor lookup callback. Ignore return status */ |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamNeighborLookupDOWNCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| smsLog(pMac, LOGW, |
| FL(" Couldn't deregister csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d"), |
| vosStatus); |
| } |
| |
| /* Reset thresholds only after deregistering DOWN event from TL */ |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight; |
| #ifdef FEATURE_WLAN_LFR |
| pNeighborRoamInfo->uEmptyScanCount = 0; |
| pNeighborRoamInfo->lookupDOWNRssi = 0; |
| pNeighborRoamInfo->uScanMode = DEFAULT_SCAN; |
| #endif |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamResetConnectedStateControlInfo |
| |
| \brief This function will reset the neighbor roam control info data structures. |
| This function should be invoked whenever we move to CONNECTED state from |
| any state other than INIT state |
| |
| \param pMac - The handle returned by macOpen. |
| \param sessionId - session id |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csrNeighborRoamResetConnectedStateControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| csrNeighborRoamResetChannelInfo(&pNeighborRoamInfo->roamChannelInfo); |
| csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
| |
| /* We dont need to run this timer any more. */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborResultsRefreshTimer); |
| vos_timer_stop(&pNeighborRoamInfo->emptyScanRefreshTimer); |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| /* Do not free up the preauth done list here */ |
| pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE; |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = 0; |
| vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| #endif |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| vos_mem_zero(&pNeighborRoamInfo->handoffReqInfo, |
| sizeof(tCsrHandoffRequest)); |
| #endif |
| } |
| |
| void csrNeighborRoamResetReportScanStateControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0); |
| pNeighborRoamInfo->neighborScanTimerInfo.pMac = pMac; |
| pNeighborRoamInfo->neighborScanTimerInfo.sessionId = CSR_SESSION_ID_INVALID; |
| #ifdef FEATURE_WLAN_ESE |
| pNeighborRoamInfo->isESEAssoc = eANI_BOOLEAN_FALSE; |
| pNeighborRoamInfo->isVOAdmitted = eANI_BOOLEAN_FALSE; |
| pNeighborRoamInfo->MinQBssLoadRequired = 0; |
| #endif |
| |
| /* Stop scan refresh timer */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborResultsRefreshTimer); |
| /* Stop empty scan results refresh timer */ |
| vos_timer_stop(&pNeighborRoamInfo->emptyScanRefreshTimer); |
| /* Purge roam able AP list */ |
| csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList); |
| return; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamResetInitStateControlInfo |
| |
| \brief This function will reset the neighbor roam control info data structures. |
| This function should be invoked whenever we move to CONNECTED state from |
| INIT state |
| |
| \param pMac - The handle returned by macOpen. |
| \param sessionId - Session Id |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csrNeighborRoamResetInitStateControlInfo(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| csrNeighborRoamResetConnectedStateControlInfo(pMac, sessionId); |
| |
| /* In addition to the above resets, |
| we should clear off the curAPBssId/Session ID in the timers */ |
| csrNeighborRoamResetReportScanStateControlInfo(pMac, sessionId); |
| } |
| |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamBssIdScanFilter |
| |
| \brief This API is used to prepare a filter to obtain scan results when |
| we complete the scan in the REPORT_SCAN state after receiving a |
| valid neighbor report from AP. This filter includes BSSIDs received from |
| the neighbor report from the AP in addition to the other filter parameters |
| created from connected profile |
| |
| \param pMac - The handle returned by macOpen. |
| pScanFilter - Scan filter to be filled and returned |
| |
| \return eHAL_STATUS_SUCCESS on successful filter creation, corresponding |
| error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| static eHalStatus csrNeighborRoamBssIdScanFilter(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| tCsrScanResultFilter *pScanFilter) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tANI_U8 i = 0; |
| |
| VOS_ASSERT(pScanFilter != NULL); |
| if (pScanFilter == NULL) |
| return eHAL_STATUS_FAILURE; |
| vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| |
| pScanFilter->BSSIDs.numOfBSSIDs = pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport; |
| pScanFilter->BSSIDs.bssid = vos_mem_malloc(sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| if (NULL == pScanFilter->BSSIDs.bssid) |
| { |
| smsLog(pMac, LOGE, FL("Scan Filter BSSID mem alloc failed")); |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| |
| vos_mem_zero(pScanFilter->BSSIDs.bssid, sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| |
| /* Populate the BSSID from Neighbor BSS info received from neighbor report */ |
| for (i = 0; i < pScanFilter->BSSIDs.numOfBSSIDs; i++) { |
| vos_mem_copy(&pScanFilter->BSSIDs.bssid[i], |
| pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[i].neighborBssId, |
| sizeof(tSirMacAddr)); |
| } |
| |
| /* Fill other general scan filter params */ |
| return csrNeighborRoamPrepareScanProfileFilter(pMac, pScanFilter, sessionId); |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamPurgePreauthFailList |
| |
| \brief This function empties the preauth fail list |
| |
| \param pMac - The handle returned by macOpen. |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csrNeighborRoamPurgePreauthFailList(tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = NULL; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Purging the preauth fail list")); |
| for (i = 0; i < CSR_ROAM_SESSION_MAX; i++) { |
| pNeighborRoamInfo = &pMac->roam.neighborRoamInfo[i]; |
| while (pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) { |
| vos_mem_zero(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress-1], |
| sizeof(tSirMacAddr)); |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress--; |
| } |
| } |
| return; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamAddBssIdToPreauthFailList |
| |
| \brief This function adds the given BSSID to the Preauth fail list |
| |
| \param pMac - The handle returned by macOpen. |
| bssId - BSSID to be added to the preauth fail list |
| |
| \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| eHalStatus csrNeighborRoamAddBssIdToPreauthFailList(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| tSirMacAddr bssId) |
| { |
| tANI_U8 i = 0; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Added BSSID "MAC_ADDRESS_STR |
| " to Preauth failed list"), MAC_ADDR_ARRAY(bssId)); |
| |
| for (i = 0; i < pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress; |
| i++) { |
| if (VOS_TRUE == vos_mem_compare( |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[i], |
| bssId, sizeof(tSirMacAddr))) { |
| smsLog(pMac, LOGW, FL("BSSID "MAC_ADDRESS_STR" already present in preauth fail list"), |
| MAC_ADDR_ARRAY(bssId)); |
| return eHAL_STATUS_SUCCESS; |
| } |
| } |
| |
| if ((pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress + 1) > |
| MAX_NUM_PREAUTH_FAIL_LIST_ADDRESS) |
| { |
| smsLog(pMac, LOGE, FL("Preauth fail list already full.. Cannot add new one")); |
| return eHAL_STATUS_FAILURE; |
| } |
| vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[ |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress], |
| bssId, |
| sizeof(tSirMacAddr)); |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress++; |
| |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamIsPreauthCandidate |
| |
| \brief This function checks whether the given MAC address is already |
| present in the preauth fail list and returns TRUE/FALSE accordingly |
| |
| \param pMac - The handle returned by macOpen. |
| |
| \return eANI_BOOLEAN_TRUE if preauth candidate, eANI_BOOLEAN_FALSE otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| tANI_BOOLEAN csrNeighborRoamIsPreauthCandidate(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| tSirMacAddr bssId) |
| { |
| tANI_U8 i = 0; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| return eANI_BOOLEAN_TRUE; |
| } |
| #endif |
| if (0 == pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| return eANI_BOOLEAN_TRUE; |
| |
| for (i = 0; i < pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress; i++) |
| { |
| if (VOS_TRUE == vos_mem_compare(pNeighborRoamInfo->FTRoamInfo.preAuthFailList.macAddress[i], |
| bssId, sizeof(tSirMacAddr))) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("BSSID "MAC_ADDRESS_STR" already present in preauth fail list"), |
| MAC_ADDR_ARRAY(bssId)); |
| return eANI_BOOLEAN_FALSE; |
| } |
| } |
| |
| return eANI_BOOLEAN_TRUE; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamIssuePreauthReq |
| |
| \brief This function issues preauth request to PE with the 1st AP entry in the |
| roam able AP list |
| |
| \param pMac - The handle returned by macOpen. |
| |
| \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| tpCsrNeighborRoamBSSInfo pNeighborBssNode; |
| |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| tCsrRoamInfo *roamInfo; |
| #endif |
| |
| if (eANI_BOOLEAN_FALSE != pNeighborRoamInfo->FTRoamInfo.preauthRspPending) |
| { |
| /* This must not be true here */ |
| VOS_ASSERT(pNeighborRoamInfo->FTRoamInfo.preauthRspPending == eANI_BOOLEAN_FALSE); |
| return eHAL_STATUS_FAILURE; |
| } |
| |
| /* Issue Preauth request to PE here */ |
| /* |
| * Need to issue the preauth request with the BSSID that is there in the |
| * head of the roam able AP list |
| * Parameters that should be passed are BSSID, Channel number and the |
| * neighborScanPeriod(probably) |
| * If roamableAPList gets empty, should transition to REPORT_SCAN state |
| */ |
| pNeighborBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL); |
| |
| if (NULL == pNeighborBssNode) |
| { |
| smsLog(pMac, LOGW, FL("Roamable AP list is empty.. ")); |
| return eHAL_STATUS_FAILURE; |
| } |
| else |
| { |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| /* LFR metrics - pre-auth initiation metric. |
| Send the event to supplicant that pre-auth was initiated */ |
| roamInfo = vos_mem_malloc(sizeof(tCsrRoamInfo)); |
| if (NULL == roamInfo) |
| { |
| smsLog(pMac, LOG1, FL("Memory allocation failed!")); |
| } |
| else |
| { |
| vos_mem_copy((void *)roamInfo->bssid, |
| (void *)pNeighborBssNode->pBssDescription->bssId, |
| sizeof(tCsrBssid)); |
| csrRoamCallCallback(pMac, sessionId, roamInfo, 0, |
| eCSR_ROAM_PREAUTH_INIT_NOTIFY, 0); |
| vos_mem_free(roamInfo); |
| } |
| #endif |
| |
| status = csrRoamEnqueuePreauth(pMac, sessionId, |
| pNeighborBssNode->pBssDescription, |
| eCsrPerformPreauth, eANI_BOOLEAN_TRUE); |
| |
| smsLog(pMac, LOG1, FL("Before Pre-Auth: BSSID "MAC_ADDRESS_STR", Ch:%d"), |
| MAC_ADDR_ARRAY(pNeighborBssNode->pBssDescription->bssId), |
| (int)pNeighborBssNode->pBssDescription->channelId); |
| |
| if (eHAL_STATUS_SUCCESS != status) |
| { |
| smsLog(pMac, LOGE, FL("Send Preauth request to PE failed with status %d"), status); |
| return status; |
| } |
| } |
| |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_TRUE; |
| |
| /* Increment the preauth retry count */ |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries++; |
| |
| /* Transition the state to preauthenticating */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING, |
| sessionId); |
| |
| return status; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamPreauthRspHandler |
| |
| \brief This function handle the Preauth response from PE |
| Every preauth is allowed max 3 tries if it fails. If a bssid failed |
| for more than MAX_TRIES, we will remove it from the list and try |
| with the next node in the roam able AP list and add the BSSID |
| to pre-auth failed list. If no more entries present in |
| roam able AP list, transition to REPORT_SCAN state |
| |
| \param pMac - The handle returned by macOpen. |
| limStatus - eSIR_SUCCESS/eSIR_FAILURE/eSIR_LIM_MAX_STA_REACHED_ERROR/ |
| eSIT_LIM_AUTH_RSP_TIMEOUT status from PE |
| |
| \return eHAL_STATUS_SUCCESS on success (i.e. pre-auth processed), |
| eHAL_STATUS_FAILURE otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| eHalStatus csrNeighborRoamPreauthRspHandler(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| tSirRetStatus limStatus) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| eHalStatus preauthProcessed = eHAL_STATUS_SUCCESS; |
| tpCsrNeighborRoamBSSInfo pPreauthRspNode = NULL; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| tCsrRoamInfo *roamInfo; |
| #endif |
| |
| if (eANI_BOOLEAN_FALSE == pNeighborRoamInfo->FTRoamInfo.preauthRspPending) |
| { |
| |
| /* This can happen when we disconnect immediately |
| * after sending a pre-auth request. During processing |
| * of the disconnect command, we would have reset |
| * preauthRspPending and transitioned to INIT state. |
| */ |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL("Unexpected pre-auth response in state %d"), |
| pNeighborRoamInfo->neighborRoamState); |
| preauthProcessed = eHAL_STATUS_FAILURE; |
| goto DEQ_PREAUTH; |
| } |
| |
| // We can receive it in these 2 states. |
| if ((pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING) && |
| (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL("Preauth response received in state %s"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| preauthProcessed = eHAL_STATUS_FAILURE; |
| goto DEQ_PREAUTH; |
| } |
| |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = eANI_BOOLEAN_FALSE; |
| |
| if (eSIR_SUCCESS == limStatus) |
| { |
| pPreauthRspNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, |
| &pNeighborRoamInfo->roamableAPList, |
| NULL); |
| } |
| if ((eSIR_SUCCESS == limStatus) && (NULL != pPreauthRspNode)) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Preauth completed successfully after %d tries"), pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries); |
| |
| smsLog(pMac, LOG1, FL("After Pre-Auth: BSSID "MAC_ADDRESS_STR", Ch:%d"), |
| MAC_ADDR_ARRAY(pPreauthRspNode->pBssDescription->bssId), |
| (int)pPreauthRspNode->pBssDescription->channelId); |
| |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| /* LFR metrics - pre-auth completion metric. |
| Send the event to supplicant that pre-auth successfully completed */ |
| roamInfo = vos_mem_malloc(sizeof(tCsrRoamInfo)); |
| if (NULL == roamInfo) |
| { |
| smsLog(pMac, LOG1, FL("Memory allocation failed!")); |
| } |
| else |
| { |
| vos_mem_copy((void *)roamInfo->bssid, |
| (void *)pPreauthRspNode->pBssDescription->bssId, |
| sizeof(tCsrBssid)); |
| csrRoamCallCallback(pMac, sessionId, roamInfo, 0, |
| eCSR_ROAM_PREAUTH_STATUS_SUCCESS, 0); |
| vos_mem_free(roamInfo); |
| } |
| #endif |
| |
| /* Preauth completed successfully. Insert the preauthenticated |
| node to tail of preAuthDoneList */ |
| csrNeighborRoamRemoveRoamableAPListEntry(pMac, &pNeighborRoamInfo->roamableAPList, pPreauthRspNode); |
| csrLLInsertTail(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, &pPreauthRspNode->List, LL_ACCESS_LOCK); |
| |
| /* Pre-auth completed successfully. Transition to PREAUTH Done state */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE, |
| sessionId); |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| |
| /* |
| * The caller of this function would start a timer and by the time it |
| * expires, supplicant should have provided the updated FTIEs to SME. |
| * So, when it expires, handoff will be triggered then |
| */ |
| } |
| else |
| { |
| tpCsrNeighborRoamBSSInfo pNeighborBssNode = NULL; |
| tListElem *pEntry; |
| bool is_dis_pending = false; |
| uint32_t retries; |
| |
| retries = pMac->sta_auth_retries_for_code17 > |
| CSR_NEIGHBOR_ROAM_MAX_NUM_PREAUTH_RETRIES ? |
| pMac->sta_auth_retries_for_code17 : |
| CSR_NEIGHBOR_ROAM_MAX_NUM_PREAUTH_RETRIES; |
| |
| smsLog(pMac, LOGE, FL("Preauth failed retry number %d, status = 0x%x"), |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries, limStatus); |
| |
| /* Preauth failed. Add the bssId to the preAuth failed list MAC Address. |
| Also remove the AP from roam able AP list */ |
| if ((pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries >= retries) || |
| ((eSIR_LIM_MAX_STA_REACHED_ERROR == limStatus) && |
| (pMac->sta_auth_retries_for_code17 == 0))) |
| { |
| /* We are going to remove the node as it fails for more than MAX tries. Reset this count to 0 */ |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| |
| /* The one in the head of the list should be one with which we issued pre-auth and failed */ |
| pEntry = csrLLRemoveHead(&pNeighborRoamInfo->roamableAPList, LL_ACCESS_LOCK); |
| if(pEntry) |
| { |
| pNeighborBssNode = GET_BASE_ADDR(pEntry, tCsrNeighborRoamBSSInfo, List); |
| /* Add the BSSID to pre-auth fail list if it is not requested by HDD */ |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if(!pNeighborRoamInfo->uOsRequestedHandoff) |
| #endif |
| { |
| status = csrNeighborRoamAddBssIdToPreauthFailList(pMac, |
| sessionId, |
| pNeighborBssNode->pBssDescription->bssId); |
| } |
| |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| /* LFR metrics - pre-auth completion metric. Send the event |
| to supplicant that pre-auth successfully completed */ |
| roamInfo = vos_mem_malloc(sizeof(tCsrRoamInfo)); |
| if (NULL == roamInfo) |
| { |
| smsLog(pMac, LOG1, FL("Memory allocation failed!")); |
| } |
| else |
| { |
| vos_mem_copy((void *)roamInfo->bssid, |
| (void *)pNeighborBssNode->pBssDescription->bssId, |
| sizeof(tCsrBssid)); |
| csrRoamCallCallback(pMac, sessionId, roamInfo, 0, |
| eCSR_ROAM_PREAUTH_STATUS_FAILURE, 0); |
| vos_mem_free(roamInfo); |
| } |
| #endif |
| |
| /* Now we can free this node */ |
| csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pNeighborBssNode); |
| } |
| } |
| |
| is_dis_pending = is_disconnect_pending(pMac, sessionId); |
| if (is_dis_pending) { |
| smsLog(pMac, LOGE, |
| FL(" Disconnect in progress, Abort preauth")); |
| goto abort_preauth; |
| } |
| |
| if (pMac->roam.pending_roam_disable) |
| { |
| smsLog(pMac, LOG1, FL("process pending roam disable")); |
| pMac->roam.configParam.isFastRoamIniFeatureEnabled = FALSE; |
| pMac->roam.pending_roam_disable = FALSE; |
| csrNeighborRoamUpdateFastRoamingEnabled(pMac, sessionId, FALSE); |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, |
| sessionId); |
| goto DEQ_PREAUTH; |
| } |
| |
| /* Issue preauth request for the same/next entry */ |
| if (eHAL_STATUS_SUCCESS == csrNeighborRoamIssuePreauthReq(pMac, |
| sessionId)) |
| goto DEQ_PREAUTH; |
| |
| abort_preauth: |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| if(pNeighborRoamInfo->uOsRequestedHandoff) |
| { |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| csrRoamOffloadScan(pMac, 0, ROAM_SCAN_OFFLOAD_START, |
| REASON_PREAUTH_FAILED_FOR_ALL); |
| } |
| else |
| { |
| csrRoamOffloadScan(pMac, 0, ROAM_SCAN_OFFLOAD_RESTART, |
| REASON_PREAUTH_FAILED_FOR_ALL); |
| } |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, |
| sessionId); |
| } else |
| { |
| #endif |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN, |
| sessionId); |
| |
| /* Register Neighbor Lookup threshold callback with TL |
| for UP event now */ |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("No more pre-auth candidates-" |
| "register UP indication with TL. RSSI = %d,"), |
| NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1)); |
| |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Memory allocation failed for pUsrCtx")); |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1), |
| WLANTL_HO_THRESHOLD_UP, |
| csrNeighborRoamNeighborLookupUPCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| vos_mem_free(pUsrCtx); |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| //err msg |
| smsLog(pMac, LOGE, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback UP event with TL: Status = %d"), status); |
| } |
| |
| /* Start the neighbor results refresh timer and transition to REPORT_SCAN state to perform scan again */ |
| status = vos_timer_start(&pNeighborRoamInfo->neighborResultsRefreshTimer, |
| pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod); |
| if ( status != eHAL_STATUS_SUCCESS ) |
| { |
| smsLog(pMac, LOGE, FL("Neighbor results refresh timer start failed with status %d"), status); |
| } |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| |
| DEQ_PREAUTH: |
| csrDequeueRoamCommand(pMac, eCsrPerformPreauth); |
| return preauthProcessed; |
| } |
| #endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */ |
| |
| #ifdef WLAN_FEATURE_ROAM_OFFLOAD |
| /* --------------------------------------------------------------------------- |
| * \fn csrNeighborRoamOffloadUpdatePreauthList |
| * \brief This function handle the RoamOffloadSynch and adds the |
| * roamed AP to the preauth done list |
| * \param pMac - The handle returned by macOpen. |
| * \param pSmeRoamOffloadSynchInd - Roam offload sync Ind Info |
| * \param sessionId - Session identifier |
| * \return eHAL_STATUS_SUCCESS on success, |
| * eHAL_STATUS_FAILURE otherwise |
| * --------------------------------------------------------------------------*/ |
| eHalStatus |
| csrNeighborRoamOffloadUpdatePreauthList(tpAniSirGlobal pMac, |
| tpSirRoamOffloadSynchInd pSmeRoamOffloadSynchInd, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tpCsrNeighborRoamBSSInfo pBssInfo; |
| tANI_U16 bssDescLen; |
| |
| if (pNeighborRoamInfo->neighborRoamState != |
| eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL("LFR3:Roam Offload Synch Ind received in state %d"), |
| pNeighborRoamInfo->neighborRoamState); |
| return eHAL_STATUS_FAILURE; |
| } |
| |
| pBssInfo = vos_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| if (NULL == pBssInfo) |
| { |
| smsLog(pMac, LOGE, |
| FL("LFR3:Memory allocation for Neighbor Roam BSS Info failed")); |
| return eHAL_STATUS_FAILURE; |
| } |
| bssDescLen = pSmeRoamOffloadSynchInd->pbssDescription->length + |
| sizeof(pSmeRoamOffloadSynchInd->pbssDescription->length); |
| pBssInfo->pBssDescription = vos_mem_malloc(bssDescLen); |
| if (pBssInfo->pBssDescription != NULL) |
| { |
| vos_mem_copy(pBssInfo->pBssDescription, |
| pSmeRoamOffloadSynchInd->pbssDescription, |
| bssDescLen); |
| } |
| else |
| { |
| smsLog(pMac, LOGE, |
| FL("LFR3:Mem alloc for Neighbor Roam BSS Descriptor failed")); |
| vos_mem_free(pBssInfo); |
| return eHAL_STATUS_FAILURE; |
| |
| } |
| csrLLInsertTail(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, |
| &pBssInfo->List, LL_ACCESS_LOCK); |
| |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE, |
| sessionId); |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| "LFR3:Entry added to Auth Done List"); |
| |
| return eHAL_STATUS_SUCCESS; |
| } |
| #endif |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamPrepareScanProfileFilter |
| |
| \brief This function creates a scan filter based on the currently connected profile. |
| Based on this filter, scan results are obtained |
| |
| \param pMac - The handle returned by macOpen. |
| pScanFilter - Populated scan filter based on the connected profile |
| |
| \return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| eHalStatus |
| csrNeighborRoamPrepareScanProfileFilter(tpAniSirGlobal pMac, |
| tCsrScanResultFilter *pScanFilter, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrRoamConnectedProfile *pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| tANI_U8 i = 0; |
| struct roam_ext_params *roam_params; |
| |
| VOS_ASSERT(pScanFilter != NULL); |
| if (pScanFilter == NULL) |
| return eHAL_STATUS_FAILURE; |
| |
| vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| |
| roam_params = &pMac->roam.configParam.roam_params; |
| /* We dont want to set BSSID based Filter */ |
| pScanFilter->BSSIDs.numOfBSSIDs = 0; |
| pScanFilter->scan_filter_for_roam = 1; |
| //only for HDD requested handoff fill in the BSSID in the filter |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (pNeighborRoamInfo->uOsRequestedHandoff) |
| { |
| |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| FL("OS Requested Handoff")); |
| pScanFilter->BSSIDs.numOfBSSIDs = 1; |
| pScanFilter->BSSIDs.bssid = vos_mem_malloc(sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| if (NULL == pScanFilter->BSSIDs.bssid) |
| { |
| smsLog(pMac, LOGE, FL("Scan Filter BSSID mem alloc failed")); |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| |
| vos_mem_zero(pScanFilter->BSSIDs.bssid, sizeof(tSirMacAddr) * pScanFilter->BSSIDs.numOfBSSIDs); |
| |
| /* Populate the BSSID from handoff info received from HDD */ |
| for (i = 0; i < pScanFilter->BSSIDs.numOfBSSIDs; i++) |
| { |
| vos_mem_copy(&pScanFilter->BSSIDs.bssid[i], |
| pNeighborRoamInfo->handoffReqInfo.bssid, sizeof(tSirMacAddr)); |
| } |
| } |
| #endif |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| FL("No of Allowed SSID List:%d"), roam_params->num_ssid_allowed_list); |
| if (roam_params->num_ssid_allowed_list) { |
| pScanFilter->SSIDs.numOfSSIDs = (roam_params->num_ssid_allowed_list); |
| pScanFilter->SSIDs.SSIDList = |
| vos_mem_malloc(sizeof(tCsrSSIDInfo) * pScanFilter->SSIDs.numOfSSIDs); |
| if (NULL == pScanFilter->SSIDs.SSIDList) { |
| smsLog(pMac, LOGE, FL("Scan Filter SSID mem alloc failed")); |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| for(i = 0; i < roam_params->num_ssid_allowed_list; i++) { |
| pScanFilter->SSIDs.SSIDList[i].handoffPermitted = 1; |
| pScanFilter->SSIDs.SSIDList[i].ssidHidden = 0; |
| vos_mem_copy((void *)pScanFilter->SSIDs.SSIDList[i].SSID.ssId, |
| roam_params->ssid_allowed_list[i].ssId, |
| roam_params->ssid_allowed_list[i].length); |
| pScanFilter->SSIDs.SSIDList[i].SSID.length = |
| roam_params->ssid_allowed_list[i].length; |
| } |
| } else { |
| /* Populate all the information from the connected profile */ |
| pScanFilter->SSIDs.numOfSSIDs = 1; |
| pScanFilter->SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo)); |
| if (NULL == pScanFilter->SSIDs.SSIDList) { |
| smsLog(pMac, LOGE, FL("Scan Filter SSID mem alloc failed")); |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| pScanFilter->SSIDs.SSIDList->handoffPermitted = 1; |
| pScanFilter->SSIDs.SSIDList->ssidHidden = 0; |
| pScanFilter->SSIDs.SSIDList->SSID.length = pCurProfile->SSID.length; |
| vos_mem_copy((void *)pScanFilter->SSIDs.SSIDList->SSID.ssId, |
| (void *)pCurProfile->SSID.ssId, pCurProfile->SSID.length); |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Filtering for SSID %.*s from scan results," |
| "length of SSID = %u"), |
| pScanFilter->SSIDs.SSIDList->SSID.length, |
| pScanFilter->SSIDs.SSIDList->SSID.ssId, |
| pScanFilter->SSIDs.SSIDList->SSID.length); |
| } |
| pScanFilter->authType.numEntries = 1; |
| pScanFilter->authType.authType[0] = pCurProfile->AuthType; |
| |
| pScanFilter->EncryptionType.numEntries = 1; //This must be 1 |
| pScanFilter->EncryptionType.encryptionType[0] = pCurProfile->EncryptionType; |
| |
| pScanFilter->mcEncryptionType.numEntries = 1; |
| pScanFilter->mcEncryptionType.encryptionType[0] = pCurProfile->mcEncryptionType; |
| |
| pScanFilter->BSSType = pCurProfile->BSSType; |
| |
| if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels) |
| { |
| /* We are interested only in the scan results on channels we scanned */ |
| pScanFilter->ChannelInfo.numOfChannels = |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels; |
| pScanFilter->ChannelInfo.ChannelList = |
| vos_mem_malloc(pScanFilter->ChannelInfo.numOfChannels * sizeof(tANI_U8)); |
| if (NULL == pScanFilter->ChannelInfo.ChannelList) { |
| smsLog(pMac, LOGE, FL("Scan Filter Channel list mem alloc failed")); |
| vos_mem_free(pScanFilter->SSIDs.SSIDList); |
| pScanFilter->SSIDs.SSIDList = NULL; |
| return eHAL_STATUS_FAILED_ALLOC; |
| } |
| for (i = 0; i < pScanFilter->ChannelInfo.numOfChannels; i++) |
| pScanFilter->ChannelInfo.ChannelList[i] = |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[i]; |
| } else { |
| pScanFilter->ChannelInfo.numOfChannels = 0; |
| pScanFilter->ChannelInfo.ChannelList = NULL; |
| } |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| if (pNeighborRoamInfo->is11rAssoc) |
| { |
| /* MDIE should be added as a part of profile. This should be added as a part of filter as well */ |
| pScanFilter->MDID.mdiePresent = pCurProfile->MDID.mdiePresent; |
| pScanFilter->MDID.mobilityDomain = pCurProfile->MDID.mobilityDomain; |
| } |
| #endif |
| |
| #ifdef WLAN_FEATURE_11W |
| pScanFilter->MFPEnabled = pCurProfile->MFPEnabled; |
| pScanFilter->MFPRequired = pCurProfile->MFPRequired; |
| pScanFilter->MFPCapable = pCurProfile->MFPCapable; |
| #endif |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| tANI_U32 csrGetCurrentAPRssi(tpAniSirGlobal pMac, |
| tScanResultHandle *pScanResultList, |
| tANI_U8 sessionId) |
| { |
| tCsrScanResultInfo *pScanResult; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| #ifdef FEATURE_WLAN_LFR |
| tANI_U32 CurrAPRssi = pNeighborRoamInfo->lookupDOWNRssi; |
| #else |
| /* We are setting this as default value to make sure we return this value, |
| when we do not see this AP in the scan result for some reason.However,it is |
| less likely that we are associated to an AP and do not see it in the scan list */ |
| tANI_U32 CurrAPRssi = -125; |
| #endif |
| |
| while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList))) |
| { |
| if (VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) |
| { |
| /* We got a match with the currently associated AP. |
| * Capture the RSSI value and complete the while loop. |
| * The while loop is completed in order to make the current entry go back to NULL, |
| * and in the next while loop, it properly starts searching from the head of the list. |
| * TODO: Can also try setting the current entry directly to NULL as soon as we find the new AP*/ |
| |
| CurrAPRssi = (int)pScanResult->BssDescriptor.rssi * (-1); |
| |
| } else { |
| continue; |
| } |
| } |
| |
| return CurrAPRssi; |
| |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamProcessScanResults |
| |
| \brief This function extracts scan results, sorts on the basis of neighbor score(todo). |
| Assumed that the results are already sorted by RSSI by csrScanGetResult |
| |
| \param pMac - The handle returned by macOpen. |
| pScanResultList - Scan result result obtained from csrScanGetResult() |
| |
| \return tANI_BOOLEAN - return TRUE if we have a candidate we can immediately |
| roam to. Otherwise, return FALSE. |
| |
| ---------------------------------------------------------------------------*/ |
| |
| static tANI_BOOLEAN |
| csrNeighborRoamProcessScanResults(tpAniSirGlobal pMac, |
| tANI_U8 sessionId, |
| tScanResultHandle *pScanResultList) |
| { |
| tCsrScanResultInfo *pScanResult; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tpCsrNeighborRoamBSSInfo pBssInfo; |
| tANI_U32 CurrAPRssi; |
| tANI_U8 RoamRssiDiff = pMac->roam.configParam.RoamRssiDiff; |
| #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR) |
| tANI_U8 immediateRoamRssiDiff = |
| pMac->roam.configParam.nImmediateRoamRssiDiff; |
| #endif |
| tANI_BOOLEAN roamNow = eANI_BOOLEAN_FALSE; |
| tScanResultHandle *pScanResultListSaved = NULL; |
| tANI_U32 apAgeTicks = 0; |
| tANI_U32 apAgeLimitTicks = adf_os_msecs_to_ticks(ROAM_AP_AGE_LIMIT_MS); |
| tANI_U8 numCandidates = 0; |
| tANI_U8 numAPsDropped = 0; |
| /* |
| * first iteration of scan list should consider |
| * age constraint for candidates |
| */ |
| tANI_BOOLEAN ageConstraint = eANI_BOOLEAN_TRUE; |
| |
| /*************************************************************** |
| * Find out the Current AP RSSI and keep it handy to check if |
| * it is better than the RSSI of the AP which we are |
| * going to roam.If so, we are going to continue with the |
| * current AP. |
| ***************************************************************/ |
| CurrAPRssi = csrGetCurrentAPRssi(pMac, pScanResultList, sessionId); |
| |
| /* |
| * Expecting the scan result already to be in the sorted order based on the |
| * RSSI. Based on the previous state we need to check whether the list |
| * should be sorted again taking neighbor score into consideration. If |
| * previous state is CFG_CHAN_LIST_SCAN, there should not be any neighbor |
| * score associated with any of the BSS. If the previous state is |
| * REPORT_QUERY, then there will be neighbor score for each of the APs. For |
| * now, let us take the top of the list provided as it is by the CSR Scan |
| * result API. This means it is assumed that neighbor score and rssi score |
| * are in the same order. This will be taken care later |
| */ |
| |
| do { |
| /* save the scan result pointer for next iteration */ |
| pScanResultListSaved = pScanResultList; |
| while (NULL != (pScanResult = csrScanResultGetNext(pMac, |
| *pScanResultList))) { |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| FL("Scan result: BSSID "MAC_ADDRESS_STR" (Rssi %d, Ch:%d)"), |
| MAC_ADDR_ARRAY(pScanResult->BssDescriptor.bssId), |
| abs(pScanResult->BssDescriptor.rssi), |
| pScanResult->BssDescriptor.channelId); |
| #else |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| FL("Scan result: BSSID "MAC_ADDRESS_STR" (Rssi %ld, Ch:%d)"), |
| MAC_ADDR_ARRAY(pScanResult->BssDescriptor.bssId), |
| (long int)abs(pScanResult->BssDescriptor.rssi), |
| pScanResult->BssDescriptor.channelId); |
| #endif |
| if ((VOS_TRUE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| pNeighborRoamInfo->currAPbssid, sizeof(tSirMacAddr))) || |
| ((eSME_ROAM_TRIGGER_SCAN == pNeighborRoamInfo->cfgRoamEn) && |
| (VOS_TRUE != vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| pNeighborRoamInfo->cfgRoambssId, sizeof(tSirMacAddr))))) { |
| /* |
| * currently associated AP. Do not have this in the roam able AP |
| * list |
| */ |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "SKIP-currently associated AP"); |
| continue; |
| } |
| if (vos_concurrent_open_sessions_running() && |
| !pMac->roam.configParam.fenableMCCMode && |
| (pScanResult->BssDescriptor.channelId != |
| csrGetConcurrentOperationChannel(pMac))) { |
| smsLog(pMac, LOG1, FL("MCC not supported so Ignore AP on channel %d"), |
| pScanResult->BssDescriptor.channelId); |
| continue; |
| } |
| |
| #ifdef FEATURE_WLAN_LFR |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| /* |
| * In case of reassoc requested by upper layer, look for exact match |
| * of bssid & channel. csr cache might have duplicates |
| */ |
| if ((pNeighborRoamInfo->uOsRequestedHandoff) && |
| ((VOS_FALSE == vos_mem_compare(pScanResult->BssDescriptor.bssId, |
| pNeighborRoamInfo->handoffReqInfo.bssid, |
| sizeof(tSirMacAddr)))|| |
| (pScanResult->BssDescriptor.channelId != |
| pNeighborRoamInfo->handoffReqInfo.channel))) { |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "SKIP-not a candidate AP for OS requested roam"); |
| continue; |
| } |
| #endif |
| #endif |
| |
| /* |
| * This condition is to ensure to roam to an AP with better RSSI. |
| * if the value of RoamRssiDiff is Zero, this feature |
| * is disabled and we continue to roam without any check |
| */ |
| if ((RoamRssiDiff > 0) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && !csrRoamIsRoamOffloadScanEnabled(pMac) |
| #endif |
| && ((eSME_ROAM_TRIGGER_SCAN != pNeighborRoamInfo->cfgRoamEn) && |
| (eSME_ROAM_TRIGGER_FAST_ROAM != pNeighborRoamInfo->cfgRoamEn))) { |
| /* |
| * If RSSI is lower than the lookup threshold, then continue. |
| */ |
| if (abs(pScanResult->BssDescriptor.rssi) > |
| pNeighborRoamInfo->currentNeighborLookupThreshold) { |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| FL("new ap rssi (%d) lower than lookup threshold (%d)"), |
| (int)pScanResult->BssDescriptor.rssi * (-1), |
| (int)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| continue; |
| } |
| |
| if (abs(CurrAPRssi) < abs(pScanResult->BssDescriptor.rssi)) { |
| /* Do not roam to an AP with worse RSSI than the current */ |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| "%s: [INFOLOG]Current AP rssi=%d new ap rssi " |
| "worse=%d", __func__, |
| CurrAPRssi, |
| (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| continue; |
| } else { |
| /* |
| * Do not roam to an AP which is having better RSSI than the |
| * current AP, but still less than the margin that is |
| * provided by user from the ini file (RoamRssiDiff) |
| */ |
| if (abs(abs(CurrAPRssi) - |
| abs(pScanResult->BssDescriptor.rssi)) < RoamRssiDiff) { |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| "%s: [INFOLOG]Current AP rssi=%d new ap " |
| "rssi=%d not good enough, roamRssiDiff=%d", |
| __func__, |
| CurrAPRssi, |
| (int)pScanResult->BssDescriptor.rssi * (-1), |
| RoamRssiDiff); |
| continue; |
| } else { |
| VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, |
| "%s: [INFOLOG]Current AP rssi=%d new ap " |
| "rssi better=%d", |
| __func__, |
| CurrAPRssi, |
| (int)pScanResult->BssDescriptor.rssi * (-1) ); |
| } |
| } |
| } |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| if (pNeighborRoamInfo->is11rAssoc) { |
| if (!csrNeighborRoamIsPreauthCandidate(pMac, sessionId, |
| pScanResult->BssDescriptor.bssId)) { |
| smsLog(pMac, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| } |
| #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| |
| #ifdef FEATURE_WLAN_ESE |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (!csrRoamIsRoamOffloadScanEnabled(pMac)) { |
| #endif |
| if (pNeighborRoamInfo->isESEAssoc) { |
| if (!csrNeighborRoamIsPreauthCandidate(pMac, sessionId, |
| pScanResult->BssDescriptor.bssId)) { |
| smsLog(pMac, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| } |
| if ((pScanResult->BssDescriptor.QBSSLoad_present) && |
| (pScanResult->BssDescriptor.QBSSLoad_avail)) { |
| if (pNeighborRoamInfo->isVOAdmitted) { |
| smsLog(pMac, LOG1, FL("New AP has %x BW available"), |
| (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail); |
| smsLog(pMac, LOG1, FL("We need %x BW available"), |
| (unsigned int)pNeighborRoamInfo->MinQBssLoadRequired); |
| if (pScanResult->BssDescriptor.QBSSLoad_avail < |
| pNeighborRoamInfo->MinQBssLoadRequired) { |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "[INFOLOG]BSSID : "MAC_ADDRESS_STR" has no" |
| " bandwidth ignoring..not adding to roam" |
| " list", |
| MAC_ADDR_ARRAY(pScanResult->BssDescriptor.bssId)); |
| continue; |
| } |
| } |
| } else { |
| smsLog(pMac, LOGE, FL("No QBss %x %x"), |
| (unsigned int)pScanResult->BssDescriptor.QBSSLoad_avail, |
| (unsigned int)pScanResult->BssDescriptor.QBSSLoad_present); |
| if (pNeighborRoamInfo->isVOAdmitted) { |
| VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "[INFOLOG]BSSID : "MAC_ADDRESS_STR" has no " |
| "QBSSLoad IE, ignoring..not adding to roam list", |
| MAC_ADDR_ARRAY(pScanResult->BssDescriptor.bssId)); |
| continue; |
| } |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| #endif /* FEATURE_WLAN_ESE */ |
| |
| #ifdef FEATURE_WLAN_LFR |
| /* |
| * If we are supporting legacy roaming, and |
| * if the candidate is on the "pre-auth failed" list, ignore it. |
| */ |
| if (csrRoamIsFastRoamEnabled(pMac, sessionId)) { |
| if (!csrNeighborRoamIsPreauthCandidate(pMac, sessionId, |
| pScanResult->BssDescriptor.bssId)) { |
| smsLog(pMac, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| } |
| #endif /* FEATURE_WLAN_LFR */ |
| |
| /* |
| * If the received times tamp in BSS description is earlier than the |
| * scan request time stamp, skip this result |
| */ |
| if ((pNeighborRoamInfo->scanRequestTimeStamp >= |
| pScanResult->BssDescriptor.nReceivedTime) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && !csrRoamIsRoamOffloadScanEnabled(pMac) |
| #endif |
| ) { |
| smsLog(pMac, LOGE, |
| FL("Ignoring BSS as it is older than the scan request " |
| "time stamp")); |
| continue; |
| } |
| |
| pBssInfo = vos_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| if (NULL == pBssInfo) { |
| smsLog(pMac, LOGE, |
| FL("Memory allocation for Neighbor Roam BSS Info " |
| "failed.. Just ignoring")); |
| continue; |
| } |
| |
| pBssInfo->pBssDescription = |
| vos_mem_malloc(pScanResult->BssDescriptor.length + |
| sizeof(pScanResult->BssDescriptor.length)); |
| if (pBssInfo->pBssDescription != NULL) { |
| vos_mem_copy(pBssInfo->pBssDescription, |
| &pScanResult->BssDescriptor, |
| pScanResult->BssDescriptor.length + |
| sizeof(pScanResult->BssDescriptor.length)); |
| } else { |
| smsLog(pMac, LOGE, |
| FL("Memory allocation for Neighbor Roam BSS Descriptor " |
| "failed.. Just ignoring")); |
| vos_mem_free(pBssInfo); |
| continue; |
| } |
| /* |
| * some value for now. Need to calculate the actual score based on |
| * RSSI and neighbor AP score |
| */ |
| pBssInfo->apPreferenceVal = 10; |
| |
| if (ageConstraint == eANI_BOOLEAN_FALSE) { |
| /* just add to candidate list, irrespective of age */ |
| numCandidates++; |
| csrLLInsertTail(&pNeighborRoamInfo->roamableAPList, |
| &pBssInfo->List, |
| LL_ACCESS_LOCK); |
| } else { |
| /* check the age of the AP first */ |
| apAgeTicks = (tANI_TIMESTAMP)palGetTickCount(pMac->hHdd) - |
| pScanResult->BssDescriptor.nReceivedTime; |
| if (apAgeTicks < apAgeLimitTicks) { |
| numCandidates++; |
| csrLLInsertTail(&pNeighborRoamInfo->roamableAPList, |
| &pBssInfo->List, |
| LL_ACCESS_LOCK); |
| } else { |
| numAPsDropped++; |
| VOS_TRACE( VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_WARN, |
| FL("Skipping because received AP " |
| "(probe rsp/beacon) is old.")); |
| if (pBssInfo->pBssDescription) |
| vos_mem_free(pBssInfo->pBssDescription); |
| if (pBssInfo) |
| vos_mem_free(pBssInfo); |
| continue; |
| } |
| } |
| #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR) |
| if ((eSME_ROAM_TRIGGER_SCAN == pNeighborRoamInfo->cfgRoamEn) || |
| (eSME_ROAM_TRIGGER_FAST_ROAM == pNeighborRoamInfo->cfgRoamEn)) { |
| roamNow = eANI_BOOLEAN_FALSE; |
| } |
| else if ((abs(abs(CurrAPRssi) - |
| abs(pScanResult->BssDescriptor.rssi)) >= |
| immediateRoamRssiDiff) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && !csrRoamIsRoamOffloadScanEnabled(pMac) |
| #endif |
| ) { |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "%s: [INFOLOG] potential candidate to roam " |
| "immediately (diff=%d, expected=%d)", |
| __func__, |
| abs(abs(CurrAPRssi) - |
| abs(pScanResult->BssDescriptor.rssi)), |
| immediateRoamRssiDiff); |
| roamNow = eANI_BOOLEAN_TRUE; |
| #else |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| "%s: [INFOLOG] potential candidate to roam " |
| "immediately (diff=%ld, expected=%d)", |
| __func__, |
| (long int)abs(abs(CurrAPRssi) - |
| abs(pScanResult->BssDescriptor.rssi)), |
| immediateRoamRssiDiff); |
| roamNow = eANI_BOOLEAN_TRUE; |
| #endif |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| /* |
| * If we are here means, FW already found candidates to roam, |
| * so we are good to go with pre-auth |
| */ |
| if(csrRoamIsRoamOffloadScanEnabled(pMac)) { |
| roamNow = eANI_BOOLEAN_TRUE; |
| } |
| #endif |
| #endif |
| } /* end of while (csrScanResultGetNext) */ |
| /* set the scan results for next iteration */ |
| pScanResultList = pScanResultListSaved; |
| |
| /* if some candidates were found, then no need to repeat */ |
| if (numCandidates) |
| break; |
| /* |
| * if ageConstraint is already false, we have done two |
| * iterations and no candidate were found */ |
| if (ageConstraint == eANI_BOOLEAN_FALSE) { |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, |
| "%s: No roam able candidates found", __func__); |
| break; |
| } |
| /* |
| * if all candidates were dropped rescan the scan |
| * list but this time without age constraint. |
| */ |
| ageConstraint = eANI_BOOLEAN_FALSE; |
| /* if no candidates were dropped no need to repeat */ |
| } while (numAPsDropped); |
| |
| /* |
| * Now we have all the scan results in our local list. Good time to free |
| * up the the list we got as a part of csrGetScanResult |
| */ |
| csrScanResultPurge(pMac, *pScanResultList); |
| |
| return roamNow; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamHandleEmptyScanResult |
| |
| \brief This function will be invoked in CFG_CHAN_LIST_SCAN state when |
| there are no valid APs in the scan result for roaming. This means |
| our AP is the best and no other AP is around. No point in scanning |
| again and again. Performing the following here. |
| 1. Stop the neighbor scan timer. |
| 2a. If this is the first time we encountered empty scan, then |
| re-register with TL with modified lookup threshold. |
| 2b. Else if this is the second time we encountered empty scan, |
| then start neighbor scan results refresh timer (20s). |
| 2c. Else, nothing more to do. |
| NOTE: In LFR, channels selected for scanning is derived from |
| the occupied channel list. Scan cycle following one which |
| yielded empty results is split into two halves: (i) scan on |
| channels in the occupied list, and (ii) scan on channels not |
| in the occupied list. This helps converging faster (while |
| looking for candidates in the occupied list first), and also, |
| adds channels to the occupied channel list upon finding candidates |
| matching SSID profile of interest. |
| |
| uEmptyScanCount Comments |
| eFirstEmptyScan Previous scan was done on channels in the |
| occupied list and yielded potential candidates. |
| This scan cycle was likely triggered through |
| receipt of lookup DOWN notification event. |
| eSecondEmptyScan Previous scan was done on channels in the |
| occupied list and yielded no candidates. This scan |
| cycle was triggered through RSSI notification |
| with modified lookup threshold. |
| eThirdEmptyScan Previous scan was done on channels NOT in |
| the occupied list and yielded no candidates. This |
| scan cycle was triggered immediately after scanning |
| channels in the occupied list and no candidates |
| were found. |
| eFourthEmptyScan Previous scan was done on channels in the |
| occupied list and yielded no candidates. This scan |
| cycle was triggered upon expiry of |
| neighborScanResultsRefreshPeriod (=20s). |
| eFifthEmptyScan Previous scan was done on channels NOT in |
| the occupied list and yielded no candidates. This |
| scan cycle was triggered immediately after scanning |
| channels in the occupied list and no candidates |
| were found. |
| |
| [1], [2,3] and [4,5] together form one discrete set of scan cycle. |
| |
| \param pMac - The handle returned by macOpen. |
| |
| \return VOS_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| static VOS_STATUS csrNeighborRoamHandleEmptyScanResult(tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| #ifdef FEATURE_WLAN_LFR |
| tANI_BOOLEAN performPeriodicScan = |
| (pNeighborRoamInfo->cfgParams.emptyScanRefreshPeriod) ? TRUE : FALSE; |
| #endif |
| |
| /* Stop neighbor scan timer */ |
| vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer); |
| /* |
| * Increase the neighbor lookup threshold by 3 dB |
| * after every scan cycle. NOTE: uEmptyScanCount |
| * would be either 1, 3 or 5 at the end of every |
| * scan cycle. |
| */ |
| #ifdef FEATURE_WLAN_LFR |
| if ((++pNeighborRoamInfo->uEmptyScanCount) > eFifthEmptyScan) |
| { |
| pNeighborRoamInfo->uEmptyScanCount = eFifthEmptyScan; |
| } |
| if (((0 != pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels) || |
| (abs(pNeighborRoamInfo->lookupDOWNRssi) > |
| abs(pNeighborRoamInfo->cfgParams.neighborReassocThreshold))) && |
| ((pNeighborRoamInfo->uEmptyScanCount == eSecondEmptyScan) || |
| (pNeighborRoamInfo->uEmptyScanCount == eFourthEmptyScan))) |
| { |
| /* |
| * If the scan was triggered due to lookupDOWNRssi > reassoc threshold, |
| * then it would be a contiguous scan on all valid non-DFS channels. |
| * If channels are configured in INI, then only those channels need |
| * to be scanned. |
| * In either of these modes, there is no need to trigger an immediate |
| * scan upon empty scan results for the second and fourth time (which |
| * would be equivalent to scanning on channels in non-occupied list). |
| * Incrementing uEmptyScanCount will correspond to skipping this step. |
| * NOTE: double increment of uEmptyScanCount corresponds to completion |
| * of scans on all valid channels. |
| */ |
| ++pNeighborRoamInfo->uEmptyScanCount; |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "Extra increment of empty scan count (=%d)" |
| " in contiguous scan mode", pNeighborRoamInfo->uEmptyScanCount); |
| } |
| #endif |
| if (((pNeighborRoamInfo->currentNeighborLookupThreshold+3) < |
| pNeighborRoamInfo->cfgParams.neighborReassocThreshold) |
| #ifdef FEATURE_WLAN_LFR |
| && ((pNeighborRoamInfo->uEmptyScanCount % 2) == 1) |
| #endif |
| ) |
| { |
| pNeighborRoamInfo->currentNeighborLookupThreshold += 3; |
| } |
| |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| /* Clear off the old neighbor report details */ |
| vos_mem_zero(&pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT); |
| #endif |
| |
| /* Transition to CONNECTED state */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, |
| sessionId); |
| |
| /* Reset all the necessary variables before transitioning to the CONNECTED state */ |
| csrNeighborRoamResetConnectedStateControlInfo(pMac, sessionId); |
| |
| #ifdef FEATURE_WLAN_LFR |
| if (pNeighborRoamInfo->uEmptyScanCount == eFirstEmptyScan) |
| { |
| #endif |
| /* Empty scan results for the first time */ |
| /* Re-register neighbor lookup DOWN threshold callback with TL */ |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Registering DOWN event neighbor lookup callback with TL for RSSI = %d"), |
| pNeighborRoamInfo->currentNeighborLookupThreshold * (-1)); |
| |
| /* This user context data will be returned with callback */ |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Memory allocation failure")); |
| return VOS_STATUS_E_NOMEM; |
| } |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamNeighborLookupDOWNCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| |
| vos_mem_free(pUsrCtx); |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| smsLog(pMac, LOGW, |
| FL("Couldn't re-register csrNeighborRoamNeighborLookupDOWNCallback" |
| " with TL: Status = %d"), status); |
| } |
| |
| #ifdef FEATURE_WLAN_LFR |
| pNeighborRoamInfo->lookupDOWNRssi = 0; |
| } |
| else if ((pNeighborRoamInfo->uEmptyScanCount == eSecondEmptyScan) || |
| (pNeighborRoamInfo->uEmptyScanCount == eFourthEmptyScan)) |
| { |
| /* Empty scan results for the second or fourth time */ |
| |
| /* Immediately scan on channels in non-occupied list */ |
| csrNeighborRoamTransitToCFGChanScan(pMac, sessionId); |
| } |
| else if (pNeighborRoamInfo->uEmptyScanCount >= eThirdEmptyScan) |
| { |
| /* Empty scan results for the third time */ |
| if (performPeriodicScan) |
| { |
| smsLog(pMac, LOGE, FL("Performing periodic scan, uEmptyScanCount=%d"), |
| pNeighborRoamInfo->uEmptyScanCount); |
| |
| /* |
| * Set uEmptyScanCount to MAX so that we always enter this |
| * condition on subsequent empty scan results |
| */ |
| pNeighborRoamInfo->uEmptyScanCount = eMaxEmptyScan; |
| |
| /* From here on, ONLY scan on channels in the occupied list */ |
| pNeighborRoamInfo->uScanMode = SPLIT_SCAN_OCCUPIED_LIST; |
| |
| /* Start empty scan refresh timer */ |
| if (VOS_STATUS_SUCCESS != |
| vos_timer_start(&pNeighborRoamInfo->emptyScanRefreshTimer, |
| pNeighborRoamInfo->cfgParams.emptyScanRefreshPeriod)) |
| { |
| smsLog(pMac, LOGE, FL("Empty scan refresh timer failed to start (%d)"), |
| status); |
| vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| else |
| { |
| smsLog(pMac, LOGE, FL("Empty scan refresh timer started (%d ms)"), |
| (pNeighborRoamInfo->cfgParams.emptyScanRefreshPeriod)); |
| } |
| } |
| else if (eThirdEmptyScan == pNeighborRoamInfo->uEmptyScanCount) |
| { |
| /* Start neighbor scan results refresh timer */ |
| if (VOS_STATUS_SUCCESS != |
| vos_timer_start(&pNeighborRoamInfo->neighborResultsRefreshTimer, |
| pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod)) |
| { |
| smsLog(pMac, LOGE, FL("Neighbor results refresh timer failed to start (%d)"), |
| status); |
| vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| vosStatus = VOS_STATUS_E_FAILURE; |
| } |
| else |
| { |
| smsLog(pMac, LOG2, FL("Neighbor results refresh timer started (%d ms)"), |
| (pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod * VOS_TIMER_TO_MS_UNIT)); |
| } |
| } |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "Neighbor roam empty scan count=%d scan mode=%d", |
| pNeighborRoamInfo->uEmptyScanCount, pNeighborRoamInfo->uScanMode); |
| #endif |
| return vosStatus; |
| } |
| |
| |
| static eHalStatus csrNeighborRoamProcessScanComplete (tpAniSirGlobal pMac, |
| tANI_U8 sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrScanResultFilter scanFilter; |
| tScanResultHandle scanResult; |
| tANI_U32 tempVal = 0; |
| tANI_BOOLEAN roamNow = eANI_BOOLEAN_FALSE; |
| eHalStatus hstatus; |
| tpFTRoamCallbackUsrCtx pUsrCtx; |
| |
| #if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR) |
| /* If the state is REPORT_SCAN, then this must be the scan after the REPORT_QUERY state. So, we |
| should use the BSSID filter made out of neighbor reports */ |
| if ((eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pNeighborRoamInfo->neighborRoamState) |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| && (!csrRoamIsRoamOffloadScanEnabled(pMac)) |
| #endif |
| ) |
| { |
| hstatus = csrNeighborRoamBssIdScanFilter(pMac, sessionId, &scanFilter); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("11R or ESE Association: Prepare scan filter status with neighbor AP = %d"), hstatus); |
| tempVal = 1; |
| } |
| else |
| #endif |
| { |
| hstatus = csrNeighborRoamPrepareScanProfileFilter(pMac, |
| &scanFilter, sessionId); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("11R/ESE/Other Association: Prepare scan to find neighbor AP filter status = %d"), hstatus); |
| } |
| if (eHAL_STATUS_SUCCESS != hstatus) |
| { |
| smsLog(pMac, LOGE, FL("Scan Filter preparation failed for Assoc type %d.. Bailing out.."), tempVal); |
| return eHAL_STATUS_FAILURE; |
| } |
| hstatus = csrScanGetResult(pMac, &scanFilter, &scanResult); |
| if (hstatus != eHAL_STATUS_SUCCESS) |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Get Scan Result status code %d"), hstatus); |
| } |
| /* Process the scan results and update roam able AP list */ |
| roamNow = csrNeighborRoamProcessScanResults(pMac, sessionId, |
| &scanResult); |
| |
| /* Free the scan filter */ |
| csrFreeScanFilter(pMac, &scanFilter); |
| |
| tempVal = csrLLCount(&pNeighborRoamInfo->roamableAPList); |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if(!csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| #endif |
| switch(pNeighborRoamInfo->neighborRoamState) |
| { |
| case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN: |
| if (tempVal) |
| { |
| #ifdef FEATURE_WLAN_LFR |
| /* |
| * Since there are non-zero candidates found |
| * after the scan, reset empty scan count. |
| */ |
| pNeighborRoamInfo->uEmptyScanCount = 0; |
| pNeighborRoamInfo->uScanMode = DEFAULT_SCAN; |
| #endif |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| /* |
| * If this is a non-11r association, then we can register |
| * the reassoc callback here as we have some APs in the |
| * roam able AP list |
| */ |
| if (pNeighborRoamInfo->is11rAssoc) { |
| /* Valid APs are found after scan. Now we can initiate |
| pre-authentication */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN, |
| sessionId); |
| } else |
| #endif |
| #ifdef FEATURE_WLAN_ESE |
| /* |
| * If this is a non-11r association, then we can register |
| * the reassoc callback here as we have some APs in the |
| * roam able AP list |
| */ |
| if (pNeighborRoamInfo->isESEAssoc) { |
| /* Valid APs are found after scan. Now we can initiate |
| pre-authentication */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN, |
| sessionId); |
| } else |
| #endif |
| #ifdef FEATURE_WLAN_LFR |
| /* |
| * If LFR is enabled, then we can register the reassoc |
| * callback here as we have some APs in the roam able |
| * AP list |
| */ |
| if (csrRoamIsFastRoamEnabled(pMac, sessionId)) { |
| /* Valid APs are found after scan. Now we can initiate |
| pre-authentication */ |
| csr_neighbor_roam_state_transition(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN, |
| sessionId); |
| } else |
| #endif |
| { |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Completed scanning of CFG CHAN LIST in non-11r association. Registering reassoc callback")); |
| /* Nothing much to do now. Will continue to remain in this state in case of non-11r association */ |
| } |
| } |
| else |
| { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("No candidate found after" |
| "scanning in state %s .. "), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| /* Handle it appropriately */ |
| csrNeighborRoamHandleEmptyScanResult(pMac, sessionId); |
| } |
| break; |
| #ifdef WLAN_FEATURE_VOWIFI_11R |
| case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN: |
| if (!tempVal) |
| { |
| smsLog(pMac, LOGE, |
| FL("No candidate found after scanning" |
| "in state %s .. "), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| /* Stop the timer here as the same timer will be started again in CFG_CHAN_SCAN_STATE */ |
| csrNeighborRoamTransitToCFGChanScan(pMac, sessionId); |
| } |
| break; |
| #endif /* WLAN_FEATURE_VOWIFI_11R */ |
| default: |
| // Can come only in INIT state. Where in we are associated, we sent scan and user |
| // in the meantime decides to disassoc, we will be in init state and still received call |
| // back issued. Should not come here in any other state, printing just in case |
| VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO, |
| FL("State %s"), |
| macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| // Lets just exit out silently. |
| return eHAL_STATUS_SUCCESS; |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| |
| if (tempVal) |
| { |
| VOS_STATUS vosStatus = VOS_STATUS_SUCCESS; |
| |
| if (roamNow) |
| { |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if(!csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| #endif |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Immediate roam-deregister UP indication. RSSI = %d"), |
| NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1)); |
| |
| vosStatus = WLANTL_DeregRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1), |
| WLANTL_HO_THRESHOLD_UP, |
| csrNeighborRoamNeighborLookupUPCallback, |
| VOS_MODULE_ID_SME); |
| |
| if(!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| smsLog(pMac, LOGW, |
| FL("Couldn't deregister lookup UP callback with TL: Status = %d"), vosStatus); |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| |
| csrNeighborRoamTriggerHandoff(pMac, sessionId); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (!csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| #endif |
| hstatus = vos_timer_start( |
| &pNeighborRoamInfo->neighborResultsRefreshTimer, |
| pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod); |
| |
| /* This timer should be started before registering the Reassoc |
| * callback with TL. This is because, it is very likely that the |
| * callback getting called immediately and the timer would never |
| * be stopped when pre-auth is in progress */ |
| if (hstatus != eHAL_STATUS_SUCCESS) |
| { |
| smsLog(pMac, LOGE, FL( |
| "Neighbor results refresh timer failed to start, status = %d"), |
| hstatus); |
| vos_mem_free( |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
| NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = |
| 0; |
| return eHAL_STATUS_FAILURE; |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL( |
| "Registering DOWN event Reassoc callback with TL. RSSI = %d"), |
| pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1)); |
| pUsrCtx = vos_mem_malloc(sizeof(*pUsrCtx)); |
| if (NULL == pUsrCtx) { |
| smsLog(pMac, LOGE, FL("Allocation failed for pUsrCtx")); |
| return eHAL_STATUS_FAILURE; |
| } |
| |
| pUsrCtx->pMac = pMac; |
| pUsrCtx->sessionId = sessionId; |
| /* Register a reassoc Indication callback */ |
| vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, |
| (v_S7_t)pNeighborRoamInfo->cfgParams.neighborReassocThreshold * (-1), |
| WLANTL_HO_THRESHOLD_DOWN, |
| csrNeighborRoamReassocIndCallback, |
| VOS_MODULE_ID_SME, pUsrCtx); |
| vos_mem_free(pUsrCtx); |
| if (!VOS_IS_STATUS_SUCCESS(vosStatus)) |
| { |
| //err msg |
| smsLog(pMac, LOGW, FL( |
| "Couldn't register with TL: Status = %d"), |
| vosStatus); |
| } |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| } |
| #endif |
| } |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| if (csrRoamIsRoamOffloadScanEnabled(pMac)) |
| { |
| if (!tempVal || !roamNow) |
| { |
| if ((eSME_ROAM_TRIGGER_SCAN == pNeighborRoamInfo->cfgRoamEn) || |
| (eSME_ROAM_TRIGGER_FAST_ROAM == pNeighborRoamInfo->cfgRoamEn)) |
| { |
| /* This is ioctl based roaming if we did not find any roamable |
| * candidate then just log it. */ |
| smsLog(pMac, LOGE, |
| FL("tempVal = %u, roamNow = %d uOsRequestedHandoff = %d"), |
| tempVal, roamNow, pNeighborRoamInfo->uOsRequestedHandoff); |
| } |
| else |
| { |
| if (pNeighborRoamInfo->uOsRequestedHandoff) |
| { |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_START, |
| REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW); |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| } |
| else |
| { |
| /* There is no candidate or We are not roaming Now. |
| * Inform the FW to restart Roam Offload Scan */ |
| csrRoamOffloadScan(pMac, sessionId, ROAM_SCAN_OFFLOAD_RESTART, |
| REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW); |
| } |
| } |
| csr_neighbor_roam_state_transition(pMac, eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, |
| sessionId); |
| } |
| } |
| #endif |
| return eHAL_STATUS_SUCCESS; |
| |
| } |
| |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamScanRequestCallback |
| |
| \brief This function is the callback function registered in csrScanRequest() to |
| indicate the completion of scan. If scan is completed for all the channels in |
| the channel list, this function gets the scan result and starts the refresh results |
| timer to avoid having stale results. If scan is not completed on all the channels, |
| it restarts the neighbor scan timer which on expiry issues scan on the next |
| channel |
| |
| \param halHandle - The handle returned by macOpen. |
| pContext - not used |
| scanId - not used |
| status - not used |
| |
| \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| static eHalStatus csrNeighborRoamScanRequestCallback(tHalHandle halHandle, |
| void *pContext, tANI_U8 sessionId, |
| tANI_U32 scanId, eCsrScanStatus status) |
| { |
| tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tANI_U8 currentChanIndex; |
| eHalStatus hstatus; |
| |
| if (NULL != pContext) |
| { |
| #ifdef FEATURE_WLAN_LFR |
| if (!csrRoamIsStaMode(pMac, sessionId)) |
| { |
| smsLog(pMac, LOGE, |
| FL("Ignoring scan request callback on non-infra" |
| "session %d in state %s"), |
| sessionId, macTraceGetNeighbourRoamState( |
| pNeighborRoamInfo->neighborRoamState)); |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| if (!csrRoamIsFastRoamEnabled(pMac,sessionId)) |
| { |
| smsLog(pMac, LOGE, FL("Received when fast roam is disabled. Ignore it")); |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| #endif |
| } |
| |
| pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| |
| /* This can happen when we receive a UP event from TL in any of the scan states. Silently ignore it */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| { |
| smsLog(pMac, LOGE, FL("Received in CONNECTED state. Must be because a UP event from TL after issuing scan request. Ignore it")); |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| /* -1 is done because the chanIndex would have got incremented after |
| issuing a successful scan request */ |
| currentChanIndex = (pNeighborRoamInfo->roamChannelInfo.currentChanIndex) ? (pNeighborRoamInfo->roamChannelInfo.currentChanIndex - 1) : 0; |
| |
| /* Validate inputs */ |
| if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList) { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL("csrNeighborRoamScanRequestCallback received for Channel = %d, " |
| "ChanIndex = %d"), |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[currentChanIndex], |
| currentChanIndex); |
| } |
| else |
| { |
| smsLog(pMac, LOG1, FL("Received during clean-up. Silently ignore scan completion event.")); |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| if (eANI_BOOLEAN_FALSE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress) |
| { |
| /* Scan is completed in the CFG_CHAN_SCAN state. We can transition to REPORT_SCAN state |
| just to get the results and perform PREAUTH */ |
| /* Now we have completed scanning the channel list. We have get the result by applying appropriate filter |
| sort the results based on neighborScore and RSSI and select the best candidate out of the list */ |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Channel list scan completed. Current chan index = %d"), currentChanIndex); |
| |
| if (pNeighborRoamInfo->roamChannelInfo.currentChanIndex != 0) |
| { |
| VOS_ASSERT(pNeighborRoamInfo->roamChannelInfo.currentChanIndex == 0); |
| return eHAL_STATUS_FAILURE; |
| } |
| |
| hstatus = csrNeighborRoamProcessScanComplete(pMac, sessionId); |
| |
| if (eHAL_STATUS_SUCCESS != hstatus) |
| { |
| smsLog(pMac, LOGE, FL("Neighbor scan process complete failed with status %d"), hstatus); |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_FAILURE; |
| } |
| } |
| else |
| { |
| |
| /* Restart the timer for the next scan sequence as scanning is not over */ |
| hstatus = vos_timer_start(&pNeighborRoamInfo->neighborScanTimer, |
| pNeighborRoamInfo->cfgParams.neighborScanPeriod); |
| if (eHAL_STATUS_SUCCESS != hstatus) |
| { |
| /* Timer start failed.. Should we ASSERT here??? */ |
| smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status); |
| vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0; |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_FAILURE; |
| } |
| } |
| |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| #ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamScanResultRequestCallback |
| |
| \brief This function is the callback function registered in csrScanRequestLfrResult() to |
| indicate the completion of scan. If scan is completed for all the channels in |
| the channel list, this function gets the scan result and treats them as candidates |
| |
| \param halHandle - The handle returned by macOpen. |
| pContext - not used |
| scanId - not used |
| status - not used |
| |
| \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| static eHalStatus csrNeighborRoamScanResultRequestCallback(tHalHandle halHandle, |
| void *pContext, |
| tANI_U8 sessionId, |
| tANI_U32 scanId, |
| eCsrScanStatus status) |
| { |
| tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| eHalStatus hstatus; |
| |
| smsLog(pMac, LOG2, FL("called ")); |
| pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| |
| /* we must be in connected state, if not ignore it */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState) |
| { |
| smsLog(pMac, LOGW, FL("Received in not CONNECTED state. Ignore it")); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| /* Now we have completed scanning the channel list. We have get the result by applying appropriate filter |
| sort the results based on neighborScore and RSSI and select the best candidate out of the list */ |
| |
| hstatus = csrNeighborRoamProcessScanComplete(pMac, sessionId); |
| |
| if (eHAL_STATUS_SUCCESS != hstatus) |
| { |
| smsLog(pMac, LOGE, FL("Neighbor scan process complete failed with status %d"), hstatus); |
| return eHAL_STATUS_FAILURE; |
| } |
| return eHAL_STATUS_SUCCESS; |
| } |
| #endif //WLAN_FEATURE_ROAM_SCAN_OFFLOAD |
| |
| #ifdef FEATURE_WLAN_LFR |
| static eHalStatus csrNeighborRoamContiguousScanRequestCallback(tHalHandle halHandle, |
| void *pContext, tANI_U8 sessionId, |
| tANI_U32 scanId, eCsrScanStatus status) |
| { |
| tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| eHalStatus hstatus = eHAL_STATUS_SUCCESS; |
| |
| if (NULL != pContext) |
| { |
| sessionId = *((tANI_U32*)pContext); |
| if (!csrRoamIsFastRoamEnabled(pMac,sessionId)) |
| { |
| smsLog(pMac, LOGE, FL("Received when fast roam is disabled. Ignore it")); |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| } |
| |
| pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE; |
| |
| /* This can happen when we receive a UP event from TL in any of the scan states. Silently ignore it */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED == pNeighborRoamInfo->neighborRoamState) |
| { |
| smsLog(pMac, LOGE, FL("Received in CONNECTED state. Must be because a UP event from TL after issuing scan request. Ignore it")); |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_INIT == pNeighborRoamInfo->neighborRoamState) |
| { |
| smsLog(pMac, LOGE, FL("Received in INIT state. Must have disconnected. Ignore it")); |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| return eHAL_STATUS_SUCCESS; |
| } |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "%s: process scan results", __func__); |
| hstatus = csrNeighborRoamProcessScanComplete(pMac, sessionId); |
| |
| if (eHAL_STATUS_SUCCESS != hstatus) |
| { |
| smsLog(pMac, LOGE, FL("Neighbor scan process complete failed with status %d"), hstatus); |
| } |
| |
| if (NULL != pContext) |
| vos_mem_free(pContext); |
| |
| return hstatus; |
| } |
| #endif |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csrNeighborRoamIssueBgScanRequest |
| |
| \brief This function issues CSR scan request after populating all the BG scan params |
| passed |
| |
| \param pMac - The handle returned by macOpen. |
| pBgScanParams - Params that need to be populated into csr Scan request |
| |
| \return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| eHalStatus csrNeighborRoamIssueBgScanRequest(tpAniSirGlobal pMac, |
| tCsrBGScanRequest *pBgScanParams, |
| tANI_U32 sessionId, |
| csrScanCompleteCallback callbackfn) |
| { |
| eHalStatus status = eHAL_STATUS_SUCCESS; |
| tANI_U32 scanId; |
| tCsrScanRequest scanReq; |
| tANI_U8 channel; |
| void * userData = NULL; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (1 == pBgScanParams->ChannelInfo.numOfChannels) |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Channel = %d, ChanIndex = %d"), |
| pBgScanParams->ChannelInfo.ChannelList[0], |
| pNeighborRoamInfo->roamChannelInfo.currentChanIndex); |
| |
| //send down the scan req for 1 channel on the associated SSID |
| vos_mem_set(&scanReq, sizeof(tCsrScanRequest), 0); |
| /* Fill in the SSID Info */ |
| scanReq.SSIDs.numOfSSIDs = 1; |
| scanReq.SSIDs.SSIDList = vos_mem_malloc(sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| if (NULL == scanReq.SSIDs.SSIDList) |
| { |
| //err msg |
| smsLog(pMac, LOGE, FL("Couldn't allocate memory for the SSID..Freeing memory allocated for Channel List")); |
| return eHAL_STATUS_FAILURE; |
| } |
| vos_mem_zero(scanReq.SSIDs.SSIDList, sizeof(tCsrSSIDInfo) * scanReq.SSIDs.numOfSSIDs); |
| |
| scanReq.SSIDs.SSIDList[0].handoffPermitted = eANI_BOOLEAN_TRUE; |
| scanReq.SSIDs.SSIDList[0].ssidHidden = eANI_BOOLEAN_TRUE; |
| vos_mem_copy((void *)&scanReq.SSIDs.SSIDList[0].SSID, (void *)&pBgScanParams->SSID, sizeof(pBgScanParams->SSID)); |
| |
| scanReq.ChannelInfo.numOfChannels = pBgScanParams->ChannelInfo.numOfChannels; |
| if (1 == pBgScanParams->ChannelInfo.numOfChannels) |
| { |
| channel = pBgScanParams->ChannelInfo.ChannelList[0]; |
| scanReq.ChannelInfo.ChannelList = &channel; |
| } |
| else |
| { |
| scanReq.ChannelInfo.ChannelList = pBgScanParams->ChannelInfo.ChannelList; |
| } |
| |
| scanReq.BSSType = eCSR_BSS_TYPE_INFRASTRUCTURE; |
| scanReq.scanType = eSIR_ACTIVE_SCAN; |
| scanReq.requestType = eCSR_SCAN_HO_BG_SCAN; |
| scanReq.maxChnTime = pBgScanParams->maxChnTime; |
| scanReq.minChnTime = pBgScanParams->minChnTime; |
| |
| userData = vos_mem_malloc(sizeof(tANI_U32)); |
|
