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gerrit-public.fairphone.software / platform / vendor / qcom-opensource / wlan / prima / a1184ffd7603b563c0a1d0d93fe99f1711dd63b2 / . / CORE / SME / src / csr / csrNeighborRoam.c
blob: 338899d16d5de0ba81108cd5d60c8326ebe375ad [file] [log] [blame]
/*
* Copyright (c) 2011-2018 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.
Copyright (C) 2010 Qualcomm, Incorporated
========================================================================== */
/*===========================================================================
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
#ifdef WLAN_FEATURE_LFR_MBB
#include "csr_roam_mbb.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);
static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac);
static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac);
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);
VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac);
#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 );
#ifdef WLAN_FEATURE_LFR_MBB
CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_MBB_PREAUTH_REASSOC);
#endif
default:
return "eCSR_NEIGHBOR_ROAM_STATE_UNKNOWN";
}
}
/* State Transition macro */
#define CSR_NEIGHBOR_ROAM_STATE_TRANSITION(newState)\
{\
pMac->roam.neighborRoamInfo.prevNeighborRoamState = pMac->roam.neighborRoamInfo.neighborRoamState;\
pMac->roam.neighborRoamInfo.neighborRoamState = newState;\
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG, \
FL("Neighbor Roam Transition from state %s ==> %s"), \
csrNeighborRoamStateToString (pMac->roam.neighborRoamInfo.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 roamable 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 eHalStatus csrNeighborRoamTriggerHandoff(tpAniSirGlobal pMac,
tpCsrNeighborRoamControlInfo pNeighborRoamInfo)
{
eHalStatus status = eHAL_STATUS_SUCCESS;
#ifdef WLAN_FEATURE_LFR_MBB
smsLog(pMac, LOG1, FL("enable_lfr_mbb %d is mbb supported %d"),
pMac->roam.configParam.enable_lfr_mbb,
sme_IsFeatureSupportedByFW(MAKE_BEFORE_BREAK));
if (pMac->roam.configParam.enable_lfr_mbb
&& sme_IsFeatureSupportedByFW(MAKE_BEFORE_BREAK)
#ifdef WLAN_FEATURE_VOWIFI_11R
&& (!pNeighborRoamInfo->is11rAssoc)
#endif
#ifdef FEATURE_WLAN_ESE
&& (!pNeighborRoamInfo->isESEAssoc)
#endif
) {
smsLog(pMac, LOG1,
FL("Issuing preauth reassoc"));
status = csr_neighbor_roam_issue_preauth_reassoc(pMac);
if (eHAL_STATUS_SUCCESS != status)
{
pMac->ft.ftSmeContext.is_preauth_lfr_mbb = false;
smsLog(pMac, LOG1, FL("is_preauth_lfr_mbb %d"),
pMac->ft.ftSmeContext.is_preauth_lfr_mbb);
}
return status;
}
#endif
#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))
{
status = csrNeighborRoamIssuePreauthReq(pMac);
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)
{
status = csrNeighborRoamIssuePreauthReq(pMac);
}
else
{
smsLog(pMac, LOGE, FL("ESE Reassoc indication received in unexpected state %s"),
macTraceGetNeighbourRoamState(pNeighborRoamInfo->neighborRoamState));
VOS_ASSERT(0);
}
}
else
#endif
#ifdef FEATURE_WLAN_LFR
if (csrRoamIsFastRoamEnabled(pMac, CSR_SESSION_ID_INVALID))
{
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
)
{
status = csrNeighborRoamIssuePreauthReq(pMac);
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);
}
else
{
smsLog(pMac, LOGE, FL("Non-11R Reassoc indication received in"
"unexpected state %s or Roaming is disabled"),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
}
}
return status;
}
VOS_STATUS csrNeighborRoamUpdateFastRoamingEnabled(tpAniSirGlobal pMac, const v_BOOL_t fastRoamEnabled)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
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, 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);
/* 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, pMac);
if (!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGE, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %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, ROAM_SCAN_OFFLOAD_STOP, REASON_DISCONNECTED);
} else {
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#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, const v_BOOL_t eseMode)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
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, ROAM_SCAN_OFFLOAD_START, REASON_CONNECT);
} else {
#endif
/* 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, pMac);
if (!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGE, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d"), vosStatus);
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, ROAM_SCAN_OFFLOAD_STOP, REASON_DISCONNECTED);
} else {
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#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, v_U8_t neighborLookupRssiThreshold)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
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"));
pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold = neighborLookupRssiThreshold;
pNeighborRoamInfo->currentNeighborLookupThreshold = pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold;
/* De-register existing lookup UP/DOWN, Rssi indications */
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (pMac->roam.configParam.isRoamOffloadScanEnabled)
{
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_UPDATE_CFG, REASON_LOOKUP_THRESH_CHANGED);
}
else
{
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
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, pMac);
if (!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGE, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d"), vosStatus);
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"));
pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold = neighborLookupRssiThreshold;
pNeighborRoamInfo->currentNeighborLookupThreshold = pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold;
}
else
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE,
FL("Unexpected state %s, returning failure"),
macTraceGetNeighbourRoamState(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 triggere 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)
{
tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt );
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
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, pNeighborRoamInfo);
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)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
/* 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, pNeighborRoamInfo->csrSessionId,
eCSR_SCAN_ABORT_DEFAULT);
}
pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE;
/* Reset roam channel list information */
csrNeighborRoamResetChannelInfo(&pNeighborRoamInfo->roamChannelInfo);
}
static void csrNeighborRoamResetPreauthControlInfo(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
#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;
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
vos_mem_zero(&pNeighborRoamInfo->handoffReqInfo, sizeof(tCsrHandoffRequest));
#endif
}
static void csrNeighborRoamDeregAllRssiIndication(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
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;
#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.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamResetConnectedStateControlInfo(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
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;
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
vos_mem_zero(&pNeighborRoamInfo->handoffReqInfo, sizeof(tCsrHandoffRequest));
#endif
}
void csrNeighborRoamResetReportScanStateControlInfo(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID;
vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0);
#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 roamable 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.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamResetInitStateControlInfo(tpAniSirGlobal pMac)
{
csrNeighborRoamResetConnectedStateControlInfo(pMac);
/* In addition to the above resets, we should clear off the curAPBssId/Session ID in the timers */
csrNeighborRoamResetReportScanStateControlInfo(pMac);
}
#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 succesful filter creation, corresponding error
code otherwise
---------------------------------------------------------------------------*/
static eHalStatus csrNeighborRoamBssIdScanFilter(tpAniSirGlobal pMac, tCsrScanResultFilter *pScanFilter)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
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);
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamPurgePreauthFailList
\brief This function empties the preauth fail list
\param pMac - The handle returned by macOpen.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamPurgePreauthFailList(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Purging the preauth fail list"));
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, tSirMacAddr bssId)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL(" Added BSSID "MAC_ADDRESS_STR" to Preauth failed list"),
MAC_ADDR_ARRAY(bssId));
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, tSirMacAddr bssId)
{
tANI_U8 i = 0;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
#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
roamable AP list
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, eHAL_STATUS_FAILURE otherwise
---------------------------------------------------------------------------*/
static eHalStatus csrNeighborRoamIssuePreauthReq(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
tpCsrNeighborRoamBSSInfo pNeighborBssNode;
#ifdef FEATURE_WLAN_LFR_METRICS
tCsrRoamInfo *roamInfo;
#endif
/* This must not be true here */
VOS_ASSERT(pNeighborRoamInfo->FTRoamInfo.preauthRspPending == eANI_BOOLEAN_FALSE);
/* Issue Preauth request to PE here */
/* Need to issue the preauth request with the BSSID that is there in the head of the roamable 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, pNeighborRoamInfo->csrSessionId,
roamInfo, 0, eCSR_ROAM_PREAUTH_INIT_NOTIFY, 0);
vos_mem_free(roamInfo);
}
#endif
status = csrRoamEnqueuePreauth(pMac, pNeighborRoamInfo->csrSessionId, 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(eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING)
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 roamable AP list and add the BSSID to pre-auth failed
list. If no more entries present in
roamable 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, tSirRetStatus limStatus)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
eHalStatus preauthProcessed = eHAL_STATUS_SUCCESS;
tpCsrNeighborRoamBSSInfo pPreauthRspNode = NULL;
tCsrRoamSession *pSession;
#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, pNeighborRoamInfo->csrSessionId,
roamInfo, 0, eCSR_ROAM_PREAUTH_STATUS_SUCCESS, 0);
vos_mem_free(roamInfo);
}
#endif
/* Preauth competer 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(eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE)
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;
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 roamable 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, 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, pNeighborRoamInfo->csrSessionId,
roamInfo, 0, eCSR_ROAM_PREAUTH_STATUS_FAILURE, 0);
vos_mem_free(roamInfo);
}
#endif
/* Now we can free this node */
csrNeighborRoamFreeNeighborRoamBSSNode(pMac, pNeighborBssNode);
}
}
pSession = CSR_GET_SESSION(pMac, pNeighborRoamInfo->csrSessionId);
if ((NULL != pSession) && pSession->abortConnection)
{
smsLog(pMac, LOGE, FL(" Deauth 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, FALSE);
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(
eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
goto DEQ_PREAUTH;
}
/* Issue preauth request for the same/next entry */
if (eHAL_STATUS_SUCCESS == csrNeighborRoamIssuePreauthReq(pMac))
goto DEQ_PREAUTH;
abort_preauth:
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (csrRoamIsRoamOffloadScanEnabled(pMac))
{
if(pNeighborRoamInfo->uOsRequestedHandoff)
{
pNeighborRoamInfo->uOsRequestedHandoff = 0;
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_START, REASON_PREAUTH_FAILED_FOR_ALL);
}
else if(pNeighborRoamInfo->isForcedInitialRoamTo5GH)
{
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
smsLog(pMac, LOGE, FL("Forced 5G roaming preauth got failed"
"send RSO START cmd to fwr."));
csrRoamOffloadScan(pMac,ROAM_SCAN_OFFLOAD_START,REASON_CONNECT);
}
else
{
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_RESTART, REASON_PREAUTH_FAILED_FOR_ALL);
}
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
} else
{
#endif
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN);
/* 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));
vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext,
(v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1),
WLANTL_HO_THRESHOLD_UP,
csrNeighborRoamNeighborLookupUPCallback,
VOS_MODULE_ID_SME, pMac);
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:
csrRoamDequeuePreauth(pMac);
return preauthProcessed;
}
#endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */
/* ---------------------------------------------------------------------------
\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)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId;
tCsrRoamConnectedProfile *pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile;
tANI_U8 i = 0;
VOS_ASSERT(pScanFilter != NULL);
if (pScanFilter == NULL)
return eHAL_STATUS_FAILURE;
vos_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter));
/* We dont want to set BSSID based Filter */
pScanFilter->BSSIDs.numOfBSSIDs = 0;
//only for HDD requested handoff fill in the BSSID in the filter
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (pNeighborRoamInfo->uOsRequestedHandoff)
{
smsLog(pMac, LOG1, 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
/* 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 intrested only in the scan results on channels that 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_ROAM_SCAN_OFFLOAD
if (pMac->PERroamCandidatesCnt)
pScanFilter->isPERRoamScan = true;
#endif
#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)
{
tCsrScanResultInfo *pScanResult;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
#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,
tScanResultHandle *pScanResultList)
{
tCsrScanResultInfo *pScanResult;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
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;
/***************************************************************
* 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);
/* 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 */
while (NULL != (pScanResult = csrScanResultGetNext(pMac, *pScanResultList)))
{
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)abs(pScanResult->BssDescriptor.rssi),
pScanResult->BssDescriptor.channelId);
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 roamable 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
#ifdef FEATURE_WLAN_LFR
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (pNeighborRoamInfo->isForcedInitialRoamTo5GH)
{
//Below check is required because scanning for forced initial roaming we have not
//flush all the 2.4 GHz Channel, so it may possbile we may roam again to
//2.4 Ghz ap only.
if(GetRFBand(pScanResult->BssDescriptor.channelId) != SIR_BAND_5_GHZ)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: Forced Roam to 5G Skip Non 5G Scan results ", __func__);
continue;
}
//rssi's are -ve value, so if abs of rssi is greater
//means new ap is poor then currently connected ap.
//Check it is only poor within nSelect5GHzMargin value.
if (abs(pScanResult->BssDescriptor.rssi) > abs(CurrAPRssi) &&
((abs(pScanResult->BssDescriptor.rssi) - abs(CurrAPRssi))
> pMac->roam.configParam.nSelect5GHzMargin)
)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: Forced Roam to 5G Current AP rssi=%d new ap rssi=%d not good enough, nSelect5GHzMargin=%d", __func__,
CurrAPRssi,
(int)pScanResult->BssDescriptor.rssi * (-1),
pMac->roam.configParam.nSelect5GHzMargin);
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,
"%s: [INFOLOG] new ap rssi (%d) lower than lookup threshold (%d)",
__func__, (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_INFO,
"%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_INFO,
"%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_INFO,
"%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, 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, 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, CSR_SESSION_ID_INVALID))
{
if (!csrNeighborRoamIsPreauthCandidate(pMac, pScanResult->BssDescriptor.bssId))
{
smsLog(pMac, LOGE, FL("BSSID present in pre-auth fail list.. Ignoring"));
continue;
}
}
#endif /* FEATURE_WLAN_LFR */
/* If the received timestamp in BSS description is earlier than the scan request timestamp, 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 timestamp"));
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;
}
pBssInfo->apPreferenceVal = 10; //some value for now. Need to calculate the actual score based on RSSI and neighbor AP score
/* Just add to the end of the list as it is already sorted by RSSI */
csrLLInsertTail(&pNeighborRoamInfo->roamableAPList, &pBssInfo->List, LL_ACCESS_LOCK);
#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
)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: [INFOLOG] potential candidate to roam immediately (diff=%ld, expected=%d)",
__func__, (long)abs(abs(CurrAPRssi) - abs(pScanResult->BssDescriptor.rssi)),
immediateRoamRssiDiff);
roamNow = eANI_BOOLEAN_TRUE;
}
#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
}
/* 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 dervied from
the occuped 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)
{
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
#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(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
/* Reset all the necessary variables before transitioning to the CONNECTED state */
csrNeighborRoamResetConnectedStateControlInfo(pMac);
#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));
vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext,
(v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1),
WLANTL_HO_THRESHOLD_DOWN,
csrNeighborRoamNeighborLookupDOWNCallback,
VOS_MODULE_ID_SME, pMac);
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);
}
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 * PAL_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)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tCsrScanResultFilter scanFilter;
tScanResultHandle scanResult;
tANI_U32 tempVal = 0;
tANI_BOOLEAN roamNow = eANI_BOOLEAN_FALSE;
eHalStatus hstatus;
#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, &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);
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 roamable AP list */
roamNow = csrNeighborRoamProcessScanResults(pMac, &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 roamable AP list */
if (pNeighborRoamInfo->is11rAssoc)
{
/* Valid APs are found after scan. Now we can initiate pre-authentication */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)
}
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 roamable AP list */
if (pNeighborRoamInfo->isESEAssoc)
{
/* Valid APs are found after scan. Now we can initiate pre-authentication */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)
}
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 roamable AP list */
if (csrRoamIsFastRoamEnabled(pMac, CSR_SESSION_ID_INVALID))
{
/* Valid APs are found after scan. Now we can initiate pre-authentication */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)
}
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 */
/* Stop the timer. But how long the roamable AP list will be valid in here. At some point of time, we
need to restart the CFG CHAN list scan procedure if reassoc callback is not invoked from TL
within certain duration */
// vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer);
}
}
else
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE,
FL("No candidate found after scanning in state %s .. "),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
/* Handle it appropriately */
csrNeighborRoamHandleEmptyScanResult(pMac);
}
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);
}
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
hstatus = csrNeighborRoamTriggerHandoff(pMac,pNeighborRoamInfo);
if(eHAL_STATUS_SUCCESS != hstatus)
{
smsLog(pMac, LOGE,
FL("csrNeighborRoamTriggerHandoff fail status = %d"),
hstatus);
return eHAL_STATUS_FAILURE;
}
return eHAL_STATUS_SUCCESS;
}
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));
/* 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, pMac);
if(!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamReassocIndCallback with TL: Status = %d"), vosStatus);
}
}
#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.
VOS_TRACE( VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
"tempVal = %u, roamNow = %d uOsRequestedHandoff = %d",
tempVal, roamNow, pNeighborRoamInfo->uOsRequestedHandoff);
}
else if (pNeighborRoamInfo->isForcedInitialRoamTo5GH)
{
VOS_TRACE( VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"No 5G candidate found tempVal=%u, roamNow=%d",
tempVal, roamNow);
return eHAL_STATUS_FAILURE;
}
else
{
if (pNeighborRoamInfo->uOsRequestedHandoff)
{
csrRoamOffloadScan(pMac, 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, ROAM_SCAN_OFFLOAD_RESTART,
REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW);
}
}
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
}
}
#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_U32 scanId, eCsrScanStatus status)
{
tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 currentChanIndex;
eHalStatus hstatus;
#ifdef FEATURE_WLAN_LFR
tANI_U32 sessionId = CSR_SESSION_ID_INVALID;
if (NULL != pContext)
{
sessionId = *((tANI_U32*)pContext);
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
pMac->roam.neighborRoamInfo.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 = (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex) ? (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex - 1) : 0;
/* Validate inputs */
if (pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList) {
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("csrNeighborRoamScanRequestCallback received for Channel = %d, ChanIndex = %d"),
pMac->roam.neighborRoamInfo.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);
VOS_ASSERT(pNeighborRoamInfo->roamChannelInfo.currentChanIndex == 0);
hstatus = csrNeighborRoamProcessScanComplete(pMac);
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_U32 scanId, eCsrScanStatus status)
{
tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus hstatus;
smsLog(pMac, LOG2, FL("called "));
pMac->roam.neighborRoamInfo.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);
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 csrNeighborRoamForceRoamTo5GhScanCb(tHalHandle halHandle,
void *pContext, tANI_U32 scanId, eCsrScanStatus status)
{
tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus hstatus = eHAL_STATUS_SUCCESS;
tANI_U32 sessionId = CSR_SESSION_ID_INVALID;
if (NULL != pContext)
{
sessionId = *((tANI_U32*)pContext);
if (!csrRoamIsFastRoamEnabled(pMac,sessionId))
{
smsLog(pMac, LOGE, FL("Received when fast roam is disabled. Ignore it"));
hstatus = eHAL_STATUS_FAILURE;
goto end;
}
}
pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_FALSE;
if (eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN != pNeighborRoamInfo->neighborRoamState)
{
smsLog(pMac, LOGE, FL("Received in neighborRoamState %d . Ignore it"),
pNeighborRoamInfo->neighborRoamState);
hstatus = eHAL_STATUS_FAILURE;
goto end;
}
//keep track of forced 5G scan & roam is due to Forced initial roam to 5GHz
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 1;
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "%s: process scan results", __func__);
hstatus = csrNeighborRoamProcessScanComplete(pMac);
if (eHAL_STATUS_SUCCESS != hstatus)
{
smsLog(pMac, LOGE, FL("Force Roam To 5GhScanCb failed with status %d"),
hstatus);
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
/*
* Send RSO start because in case 5G roaming host have
* not enabled at initial connection
*/
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_START, REASON_CONNECT);
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
}
if (NULL != pContext)
vos_mem_free(pContext);
return hstatus;
end:
if (NULL != pContext)
vos_mem_free(pContext);
return hstatus;
}
#endif
#ifdef FEATURE_WLAN_LFR
static eHalStatus csrNeighborRoamContiguousScanRequestCallback(tHalHandle halHandle,
void *pContext, tANI_U32 scanId, eCsrScanStatus status)
{
tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus hstatus = eHAL_STATUS_SUCCESS;
tANI_U32 sessionId = CSR_SESSION_ID_INVALID;
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;
}
}
pMac->roam.neighborRoamInfo.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);
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;
if (1 == pBgScanParams->ChannelInfo.numOfChannels)
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Channel = %d, ChanIndex = %d"),
pBgScanParams->ChannelInfo.ChannelList[0],
pMac->roam.neighborRoamInfo.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));
if (NULL == userData)
{
smsLog(pMac, LOGE, FL("Failed to allocate memory for scan request"));
vos_mem_free(scanReq.SSIDs.SSIDList);
return eHAL_STATUS_FAILURE;
}
*((tANI_U32*)userData) = sessionId;
status = csrScanRequest(pMac, CSR_SESSION_ID_INVALID, &scanReq,
&scanId, callbackfn, (void *) userData);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("CSR Scan Request failed with status %d"), status);
vos_mem_free(scanReq.SSIDs.SSIDList);
vos_mem_free(userData);
return status;
}
pMac->roam.neighborRoamInfo.scanRspPending = eANI_BOOLEAN_TRUE;
vos_mem_free(scanReq.SSIDs.SSIDList);
if (1 == pBgScanParams->ChannelInfo.numOfChannels)
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Channel List Address = %pK, Actual index = %d"),
&pMac->roam.neighborRoamInfo.roamChannelInfo.currentChannelListInfo.ChannelList[0],
pMac->roam.neighborRoamInfo.roamChannelInfo.currentChanIndex);
return status;
}
static void csrNeighborRoamFillNonChannelBgScanParams (tpAniSirGlobal pMac,
tpCsrBGScanRequest bgScanParams)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 broadcastBssid[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
vos_mem_copy(bgScanParams->bssid, broadcastBssid, sizeof(tCsrBssid));
bgScanParams->SSID.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length;
vos_mem_copy(bgScanParams->SSID.ssId,
pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId,
pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length);
bgScanParams->minChnTime = pNeighborRoamInfo->cfgParams.minChannelScanTime;
bgScanParams->maxChnTime = pNeighborRoamInfo->cfgParams.maxChannelScanTime;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamPerformBgScan
\brief This function is invoked on every expiry of neighborScanTimer till all
the channels in the channel list are scanned. It populates necessary
parameters for BG scan and calls appropriate AP to invoke the CSR scan
request
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamPerformBgScan(tpAniSirGlobal pMac, tANI_U32 sessionId)
{
eHalStatus status = eHAL_STATUS_SUCCESS;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tCsrBGScanRequest bgScanParams;
tANI_U8 channel = 0;
if ( pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList &&
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels )
{
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Channel List Address = %pK"), &pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[0]);
}
else
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List Empty"));
// Go back and restart. Mostly timer start failure has occurred.
// When timer start is declared a failure, then we delete the list.
// Should not happen now as we stop and then only start the scan timer.
// still handle the unlikely case.
csrNeighborRoamHandleEmptyScanResult(pMac);
return status;
}
/* Validate the currentChanIndex value before using it to index the ChannelList array */
if ( pNeighborRoamInfo->roamChannelInfo.currentChanIndex
> pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Invalid channel index: %d"), pNeighborRoamInfo->roamChannelInfo.currentChanIndex);
// Go back and restart.
csrNeighborRoamHandleEmptyScanResult(pMac);
return status;
}
/* Need to perform scan here before getting the list */
vos_mem_set(&bgScanParams, sizeof(tCsrBGScanRequest), 0);
channel = pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[pNeighborRoamInfo->roamChannelInfo.currentChanIndex];
bgScanParams.ChannelInfo.numOfChannels = 1;
bgScanParams.ChannelInfo.ChannelList = &channel;
csrNeighborRoamFillNonChannelBgScanParams(pMac, &bgScanParams);
/* Update the passive scan time for DFS channel */
if ((TRUE == CSR_IS_CHANNEL_DFS(channel)) &&
(TRUE == pMac->roam.configParam.allowDFSChannelRoam))
{
bgScanParams.minChnTime = pMac->roam.configParam.nPassiveMinChnTime;
bgScanParams.maxChnTime = pMac->roam.configParam.nPassiveMaxChnTime;
}
status = csrNeighborRoamIssueBgScanRequest(pMac, &bgScanParams,
sessionId, csrNeighborRoamScanRequestCallback);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Issue of BG Scan request failed: Status = %d"), status);
}
pNeighborRoamInfo->roamChannelInfo.currentChanIndex++;
if (pNeighborRoamInfo->roamChannelInfo.currentChanIndex >=
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Completed scanning channels in Channel List: CurrChanIndex = %d, Num Channels = %d"),
pNeighborRoamInfo->roamChannelInfo.currentChanIndex,
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels);
/* We have completed scanning all the channels */
pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0;
/* We are no longer scanning the channel list. Next timer firing should be used to get the scan results
and select the best AP in the list */
if (eANI_BOOLEAN_TRUE == pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress)
{
pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE;
}
}
if (eHAL_STATUS_SUCCESS != status)
{
/*
* If the status is not success, we need to call the callback
* routine so that the state machine does not get stuck.
*/
csrNeighborRoamScanRequestCallback(pMac, NULL, 0, eCSR_SCAN_FAILURE);
}
return status;
}
#ifdef FEATURE_WLAN_LFR
eHalStatus csrNeighborRoamScanForInitialForced5GRoaming(tpAniSirGlobal pMac, tANI_U32 sessionId)
{
eHalStatus status = eHAL_STATUS_SUCCESS;
tCsrBGScanRequest bgScanParams;
tANI_U8 numOfChannels = 0, i = 0;
tANI_U8 tempChannelList[WNI_CFG_VALID_CHANNEL_LIST_LEN];
tANI_U8 channelList[WNI_CFG_VALID_CHANNEL_LIST_LEN];
tANI_U8 tempNumOfChannels = 0;
vos_mem_set(&bgScanParams, sizeof(tCsrBGScanRequest), 0);
/* Contiguously scan all channels from valid list */
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "%s: get valid channel list", __func__);
tempNumOfChannels = sizeof(pMac->roam.validChannelList);
if(HAL_STATUS_SUCCESS(csrGetCfgValidChannels(pMac,
(tANI_U8 *)pMac->roam.validChannelList,
(tANI_U32 *) &tempNumOfChannels)))
{
//Make sure we are scanning only for 5Ghz AP only
//Filetring out the 5GHZ based AP.from valid channel list
csrNeighborRoamChannelsFilterByBand(
pMac,
pMac->roam.validChannelList,
tempNumOfChannels,
tempChannelList,
&tempNumOfChannels,
SIR_BAND_5_GHZ
);
for (i = 0; (i < tempNumOfChannels &&(i < WNI_CFG_VALID_CHANNEL_LIST_LEN)); i++)
{
/* DFS channel will be added in the list only when the
DFS Roaming scan flag is enabled*/
if (CSR_IS_CHANNEL_DFS(tempChannelList[i]))
{
if (pMac->roam.configParam.allowDFSChannelRoam == TRUE)
{
channelList[numOfChannels++] = tempChannelList[i];
}
}
else
{
channelList[numOfChannels++] = tempChannelList[i];
}
}
}
else
{
smsLog(pMac, LOGW, FL("csrGetCfgValidChannels got failed "));
return eHAL_STATUS_FAILURE;
}
if(numOfChannels == 0)
{
smsLog(pMac, LOGE,
FL(" No valid 5Ghz channel present so skipping Initial Forced 5Gh roaming"));
return VOS_STATUS_E_EMPTY;
}
if (numOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
numOfChannels = WNI_CFG_VALID_CHANNEL_LIST_LEN;
}
bgScanParams.ChannelInfo.numOfChannels = numOfChannels;
bgScanParams.ChannelInfo.ChannelList = channelList;
for (i = 0; i < numOfChannels; i++)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "%s: valid channel list = %d",
__func__, bgScanParams.ChannelInfo.ChannelList[i]);
}
csrNeighborRoamFillNonChannelBgScanParams(pMac, &bgScanParams);
status = csrNeighborRoamIssueBgScanRequest(pMac, &bgScanParams,
sessionId, csrNeighborRoamForceRoamTo5GhScanCb);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Forced intial roam to 5Gh request failed: Status = %d"), status);
}
return status;
}
#endif
#ifdef FEATURE_WLAN_LFR
eHalStatus csrNeighborRoamPerformContiguousBgScan(tpAniSirGlobal pMac, tANI_U32 sessionId)
{
eHalStatus status = eHAL_STATUS_SUCCESS;
tCsrBGScanRequest bgScanParams;
tANI_U8 numOfChannels = 0, i = 0;
tANI_U8 *channelList = NULL;
tANI_U8 *pInChannelList = NULL;
tANI_U8 tmpChannelList[WNI_CFG_VALID_CHANNEL_LIST_LEN];
vos_mem_set(&bgScanParams, sizeof(tCsrBGScanRequest), 0);
/* Contiguously scan all channels from valid list */
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "%s: get valid channel list", __func__);
numOfChannels = sizeof(pMac->roam.validChannelList);
if(!HAL_STATUS_SUCCESS(csrGetCfgValidChannels(pMac,
(tANI_U8 *)pMac->roam.validChannelList,
(tANI_U32 *) &numOfChannels)))
{
smsLog(pMac, LOGE, FL("Could not get valid channel list"));
return eHAL_STATUS_FAILURE;
}
pInChannelList = pMac->roam.validChannelList;
if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac))
{
csrNeighborRoamChannelsFilterByBand(
pMac,
pInChannelList,
numOfChannels,
tmpChannelList,
&numOfChannels,
GetRFBand(pMac->roam.neighborRoamInfo.currAPoperationChannel));
pInChannelList = tmpChannelList;
}
channelList = vos_mem_malloc(numOfChannels);
if ( NULL == channelList )
{
smsLog(pMac, LOGE, FL("could not allocate memory for channelList"));
return eHAL_STATUS_FAILURE;
}
vos_mem_copy(channelList, (tANI_U8 *)pInChannelList,
numOfChannels * sizeof(tANI_U8));
bgScanParams.ChannelInfo.numOfChannels = numOfChannels;
bgScanParams.ChannelInfo.ChannelList = channelList;
for (i = 0; i < numOfChannels; i++)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "%s: valid channel list = %d",
__func__, bgScanParams.ChannelInfo.ChannelList[i]);
}
csrNeighborRoamFillNonChannelBgScanParams(pMac, &bgScanParams);
status = csrNeighborRoamIssueBgScanRequest(pMac, &bgScanParams,
sessionId, csrNeighborRoamContiguousScanRequestCallback);
vos_mem_free(channelList);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Issue of BG Scan request failed: Status = %d"), status);
}
return status;
}
#endif
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamNeighborScanTimerCallback
\brief This function is the neighbor scan timer callback function. It invokes
the BG scan request based on the current and previous states
\param pv - CSR timer context info which includes pMac and session ID
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamNeighborScanTimerCallback(void *pv)
{
tpAniSirGlobal pMac = PMAC_STRUCT( pv );
tpCsrNeighborRoamControlInfo pNeighborRoamInfo;
if(!pMac)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, FL("pMac is Null"));
return;
}
pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
// check if bg scan is on going, no need to send down the new params if true
if(eANI_BOOLEAN_TRUE == pNeighborRoamInfo->scanRspPending)
{
//msg
smsLog(pMac, LOGW, FL("Already BgScanRsp is Pending"));
return;
}
switch (pNeighborRoamInfo->neighborRoamState)
{
#ifdef WLAN_FEATURE_VOWIFI_11R
case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN:
switch(pNeighborRoamInfo->prevNeighborRoamState)
{
case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY:
csrNeighborRoamPerformBgScan(pMac, pNeighborRoamInfo->csrSessionId);
break;
default:
smsLog(pMac, LOGE, FL("Neighbor scan callback received in"
"state %s, prev state = %s"),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->prevNeighborRoamState));
break;
}
break;
#endif /* WLAN_FEATURE_VOWIFI_11R */
case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN:
csrNeighborRoamPerformBgScan(pMac, pNeighborRoamInfo->csrSessionId );
break;
default:
break;
}
return;
}
void csrNeighborRoamEmptyScanRefreshTimerCallback(void *context)
{
tpAniSirGlobal pMac = PMAC_STRUCT( context );
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo;
if(!pMac)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, FL("pMac is Null"));
return;
}
pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
/* Reset all the variables just as no scan had happened before */
csrNeighborRoamResetConnectedStateControlInfo(pMac);
#if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI
if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled))
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state"));
vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d"), vosStatus);
return;
}
/* Increment the neighbor report retry count after sending the neighbor request successfully */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++;
pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE;
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY)
}
else
#endif
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Non 11R or ESE Association:empty scan refresh timer expired"));
vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
return;
}
}
return;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamResultsRefreshTimerCallback
\brief This function is the timer callback function for results refresh timer.
When this is invoked, it is as good as down event received from TL. So,
clear off the roamable AP list and start the scan procedure based on 11R
or non-11R association
\param context - CSR timer context info which includes pMac and session ID
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamResultsRefreshTimerCallback(void *context)
{
tpAniSirGlobal pMac = PMAC_STRUCT( context );
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo;
if(!pMac)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, FL("pMac is Null"));
return;
}
pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event reassoc 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))
{
//err msg
smsLog(pMac, LOGW, FL(" Couldn't deregister csrNeighborRoamReassocIndCallback with TL: Status = %d"), vosStatus);
}
/* Reset all the variables just as no scan had happened before */
csrNeighborRoamResetConnectedStateControlInfo(pMac);
#if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI
if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled))
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state"));
vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d"), vosStatus);
return;
}
/* Increment the neighbor report retry count after sending the neighbor request successfully */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++;
pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE;
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY)
}
else
#endif
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Non 11R or ESE Association:results refresh timer expired"));
vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
return;
}
}
return;
}
/* ---------------------------------------------------------------------------
\fn csrForcedInitialRoamTo5GHTimerCallback
\brief This function is the timer callback function for triggering
roaming to 5GHz after the initial association.
\param context - CSR timer context info which includes pMac and session ID
\return VOID
---------------------------------------------------------------------------*/
void csrForcedInitialRoamTo5GHTimerCallback(void *context)
{
tpAniSirGlobal pMac = PMAC_STRUCT( context );
eHalStatus status = eHAL_STATUS_SUCCESS;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo;
if(!pMac)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR, FL("pMac is Null"));
return;
}
pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("forcedInitialRoamTo5GHTimer timer expired"));
//we don't need to run this timer any more
vos_timer_stop(&pNeighborRoamInfo->forcedInitialRoamTo5GHTimer);
//we must be in connected state, if not ignore it
if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState)
{
smsLog(pMac, LOGE, FL("Received in not CONNECTED state. Ignore it"));
return;
}
//it may possible user reconnected / DUT roamed to other band ap btw
//timer started and timer callback hit.
if(GetRFBand(pMac->roam.neighborRoamInfo.currAPoperationChannel) == SIR_BAND_5_GHZ)
{
smsLog(pMac, LOGE,
FL("DUT is already connected to 5GH ap, so no need to trigger forced roam."));
return;
}
pNeighborRoamInfo->scanRequestTimeStamp = vos_timer_get_system_time();
/*
* We are about to start a fresh scan cycle for all valid channles for 5Ghz
* purge non-P2P results from the past for 5Ghz band
*/
csrScanFlushSelectiveResultForBand(pMac, VOS_FALSE, SIR_BAND_5_GHZ);
status = csrNeighborRoamScanForInitialForced5GRoaming(
pMac, pNeighborRoamInfo->csrSessionId);
if(status != eHAL_STATUS_SUCCESS)
{
smsLog(pMac, LOGE,
FL("csrNeighborRoamScanForInitialForced5GRoaming failed status=%d"), status);
//Send RSO start because in case 5G roaming host have not enabled at initial connection
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_START, REASON_CONNECT);
return;
}
/* Transition to CFG_CHAN_LIST_SCAN */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN);
}
#if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamIssueNeighborRptRequest
\brief This function is invoked when TL issues a down event and the current assoc
is a 11R association. It invokes SME RRM API to issue the neighbor request to
the currently associated AP with the current SSID
\param pMac - The handle returned by macOpen.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamIssueNeighborRptRequest(tpAniSirGlobal pMac)
{
tRrmNeighborRspCallbackInfo callbackInfo;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tRrmNeighborReq neighborReq;
neighborReq.no_ssid = 0;
/* Fill in the SSID */
neighborReq.ssid.length = pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length;
vos_mem_copy(neighborReq.ssid.ssId, pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.ssId,
pMac->roam.roamSession[pNeighborRoamInfo->csrSessionId].connectedProfile.SSID.length);
callbackInfo.neighborRspCallback = csrNeighborRoamRRMNeighborReportResult;
callbackInfo.neighborRspCallbackContext = pMac;
callbackInfo.timeout = pNeighborRoamInfo->FTRoamInfo.neighborReportTimeout;
return sme_NeighborReportRequest(pMac,(tANI_U8) pNeighborRoamInfo->csrSessionId, &neighborReq, &callbackInfo);
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamChannelsFilterByBand
\brief This function is used to filter out the channels
based on the Band given as input
\param pMac - The handle returned by macOpen.
\param pInputChannelList - The input channel list
\param inputNumOfChannels - The number of channels in input channel list
\param pOutputChannelList - The output channel list
\param outputNumOfChannels - The number of channels in output channel list
\param pMergedOutputNumOfChannels - The final number of channels in the output channel list.
\param band - The band which will be get compared with the input channel list band
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamChannelsFilterByBand(
tpAniSirGlobal pMac,
tANI_U8* pInputChannelList,
tANI_U8 inputNumOfChannels,
tANI_U8* pOutputChannelList,
tANI_U8* pMergedOutputNumOfChannels,
tSirRFBand band
)
{
tANI_U8 i = 0;
tANI_U8 numChannels = 0;
// Check for NULL pointer
if (!pInputChannelList) return VOS_STATUS_E_INVAL;
// Check for NULL pointer
if (!pOutputChannelList) return VOS_STATUS_E_INVAL;
if (inputNumOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
"%s: Wrong Number of Input Channels %d",
__func__, inputNumOfChannels);
return VOS_STATUS_E_INVAL;
}
for (i = 0; i < inputNumOfChannels; i++)
{
if (band == GetRFBand(pInputChannelList[i]))
{
pOutputChannelList[numChannels] = pInputChannelList[i];
numChannels++;
}
}
// Return final number of channels
*pMergedOutputNumOfChannels = numChannels;
return VOS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamMergeChannelLists
\brief This function is used to merge two channel list.
NB: If called with outputNumOfChannels == 0, this routines
simply copies the input channel list to the output channel list.
\param pMac - The handle returned by macOpen.
\param pInputChannelList - The addtional channels to merge in to the "merged" channels list.
\param inputNumOfChannels - The number of additional channels.
\param pOutputChannelList - The place to put the "merged" channel list.
\param outputNumOfChannels - The original number of channels in the "merged" channels list.
\param pMergedOutputNumOfChannels - The final number of channels in the "merged" channel list.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamMergeChannelLists(
tpAniSirGlobal pMac,
tANI_U8 *pInputChannelList,
tANI_U8 inputNumOfChannels,
tANI_U8 *pOutputChannelList,
tANI_U8 outputNumOfChannels,
tANI_U8 *pMergedOutputNumOfChannels
)
{
tANI_U8 i = 0;
tANI_U8 j = 0;
tANI_U8 numChannels = outputNumOfChannels;
// Check for NULL pointer
if (!pInputChannelList) return VOS_STATUS_E_INVAL;
// Check for NULL pointer
if (!pOutputChannelList) return VOS_STATUS_E_INVAL;
if (inputNumOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
"%s: Wrong Number of Input Channels %d",
__func__, inputNumOfChannels);
return VOS_STATUS_E_INVAL;
}
if (outputNumOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
"%s: Wrong Number of Output Channels %d",
__func__, inputNumOfChannels);
return VOS_STATUS_E_INVAL;
}
/* Add the "new" channels in the input list to the end of the output list.
Check added in for loop to make sure outputlist doesn't exceeds valid
channel list length. */
for (i = 0; (i < inputNumOfChannels) && (numChannels < WNI_CFG_VALID_CHANNEL_LIST_LEN); i++)
{
for (j = 0; j < outputNumOfChannels; j++)
{
if (pInputChannelList[i] == pOutputChannelList[j])
break;
}
if (j == outputNumOfChannels)
{
if (pInputChannelList[i])
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: [INFOLOG] Adding extra %d to Neighbor channel list", __func__,
pInputChannelList[i]);
pOutputChannelList[numChannels] = pInputChannelList[i];
numChannels++;
}
}
}
// Return final number of channels
*pMergedOutputNumOfChannels = numChannels;
return VOS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamCreateChanListFromNeighborReport
\brief This function is invoked when neighbor report is received for the
neighbor request. Based on the channels present in the neighbor report,
it generates channel list which will be used in REPORT_SCAN state to
scan for these neighbor APs
\param pMac - The handle returned by macOpen.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamCreateChanListFromNeighborReport(tpAniSirGlobal pMac)
{
tpRrmNeighborReportDesc pNeighborBssDesc;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 numChannels = 0;
tANI_U8 i = 0;
tANI_U8 channelList[MAX_BSS_IN_NEIGHBOR_RPT];
tANI_U8 mergedOutputNumOfChannels = 0;
/* This should always start from 0 whenever we create a channel list out of neighbor AP list */
pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0;
pNeighborBssDesc = smeRrmGetFirstBssEntryFromNeighborCache(pMac);
while (pNeighborBssDesc)
{
if (pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport >= MAX_BSS_IN_NEIGHBOR_RPT) break;
/* Update the neighbor BSS Info in the 11r FT Roam Info */
pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].channelNum =
pNeighborBssDesc->pNeighborBssDescription->channel;
pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborScore =
(tANI_U8)pNeighborBssDesc->roamScore;
vos_mem_copy(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport].neighborBssId,
pNeighborBssDesc->pNeighborBssDescription->bssId, sizeof(tSirMacAddr));
pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport++;
/* Saving the channel list non-redundantly */
for (i = 0; (i < numChannels && i < MAX_BSS_IN_NEIGHBOR_RPT); i++)
{
if (pNeighborBssDesc->pNeighborBssDescription->channel == channelList[i])
break;
}
if (i == numChannels && i < MAX_BSS_IN_NEIGHBOR_RPT)
{
if (pNeighborBssDesc->pNeighborBssDescription->channel)
{
if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac))
{
// Make sure to add only if its the same band
if (GetRFBand(pNeighborRoamInfo->currAPoperationChannel) ==
GetRFBand(pNeighborBssDesc->pNeighborBssDescription->channel))
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: [INFOLOG] Adding %d to Neighbor channel list (Same band)\n", __func__,
pNeighborBssDesc->pNeighborBssDescription->channel);
channelList[numChannels] = pNeighborBssDesc->pNeighborBssDescription->channel;
numChannels++;
}
}
else
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
"%s: [INFOLOG] Adding %d to Neighbor channel list\n", __func__,
pNeighborBssDesc->pNeighborBssDescription->channel);
channelList[numChannels] = pNeighborBssDesc->pNeighborBssDescription->channel;
numChannels++;
}
}
}
pNeighborBssDesc = smeRrmGetNextBssEntryFromNeighborCache(pMac, pNeighborBssDesc);
}
if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList)
{
vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList);
}
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0;
/* Store the obtained channel list to the Neighbor Control data structure */
if (numChannels)
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = vos_mem_malloc((numChannels) * sizeof(tANI_U8));
if (NULL == pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList)
{
smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed.. TL event ignored"));
return VOS_STATUS_E_RESOURCES;
}
vos_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList,
channelList, (numChannels) * sizeof(tANI_U8));
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = numChannels;
/*
* Create a Union of occupied channel list learnt by the DUT along with the Neighbor
* report Channels. This increases the chances of the DUT to get a candidate AP while
* roaming even if the Neighbor Report is not able to provide sufficient information.
* */
if (pMac->scan.occupiedChannels.numChannels)
{
csrNeighborRoamMergeChannelLists(pMac,
&pMac->scan.occupiedChannels.channelList[0],
pMac->scan.occupiedChannels.numChannels,
&pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList[0],
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels,
&mergedOutputNumOfChannels);
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels =
mergedOutputNumOfChannels;
}
/*Indicate the firmware about the update only if any new channels are added.
* Otherwise, the firmware would already be knowing the non-IAPPneighborlist
* channels. There is no need to update.*/
if (numChannels)
{
smsLog(pMac, LOG1, FL("IAPP Neighbor list callback received as expected"
"in state %s."),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_TRUE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (csrRoamIsRoamOffloadScanEnabled(pMac))
{
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_UPDATE_CFG, REASON_CHANNEL_LIST_CHANGED);
}
#endif
}
pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0;
pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE;
return VOS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamRRMNeighborReportResult
\brief This function is the neighbor report callback that will be invoked by
SME RRM on receiving a neighbor report or of neighbor report is not
received after timeout. On receiving a valid report, it generates a
channel list from the neighbor report and starts the
neighbor scan timer
\param context - The handle returned by macOpen.
vosStatus - Status of the callback(SUCCESS/FAILURE)
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamRRMNeighborReportResult(void *context, VOS_STATUS vosStatus)
{
tpAniSirGlobal pMac = PMAC_STRUCT(context);
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
smsLog(pMac, LOG1, FL("Neighbor report result callback with status = %d"), vosStatus);
switch (pNeighborRoamInfo->neighborRoamState)
{
case eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY:
/* Reset the report pending variable */
pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_FALSE;
if (VOS_STATUS_SUCCESS == vosStatus)
{
/* Need to create channel list based on the neighbor AP list and transition to REPORT_SCAN state */
vosStatus = csrNeighborRoamCreateChanListFromNeighborReport(pMac);
if (VOS_STATUS_SUCCESS == vosStatus)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Channel List created from Neighbor report, Transitioning to NEIGHBOR_SCAN state"));
}
/* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */
pNeighborRoamInfo->scanRequestTimeStamp =
vos_timer_get_system_time();
/* Now ready for neighbor scan based on the channel list created */
/* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is
what palTimerStart expects */
status = vos_timer_start(&pNeighborRoamInfo->neighborScanTimer,
pNeighborRoamInfo->cfgParams.neighborScanPeriod);
if (eHAL_STATUS_SUCCESS != status)
{
/* Timer start failed.. Should we ASSERT here??? */
smsLog(pMac, LOGE, FL("PAL Timer start for neighbor scan timer failed, status = %d, Ignoring state transition"), status);
vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList);
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0;
return;
}
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0;
/* Neighbor scan timer started. Transition to REPORT_SCAN state */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN)
}
else
{
/* Neighbor report timeout happened in SME RRM. We can try sending more neighbor requests until we
reach the maxNeighborRetries or receiving a successful neighbor response */
smsLog(pMac, LOGE, FL("Neighbor report result failed after %d retries, MAX RETRIES = %d"),
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum, pNeighborRoamInfo->cfgParams.maxNeighborRetries);
if (pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum >=
pNeighborRoamInfo->cfgParams.maxNeighborRetries)
{
smsLog(pMac, LOGE, FL("Bailing out to CFG Channel list scan.. "));
vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
smsLog(pMac, LOGE, FL("Transit to CFG Channel list scan state failed with status %d "), vosStatus);
return;
}
/* We transitioned to different state now. Reset the Neighbor report retry count */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0;
}
else
{
vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d"), vosStatus);
return;
}
pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE;
/* Increment the neighbor report retry count after sending the neighbor request successfully */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++;
}
}
break;
default:
smsLog(pMac, LOGE, FL("Neighbor result callback not expected in"
"state %s, Ignoring.."),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
break;
}
return;
}
#endif /* WLAN_FEATURE_VOWIFI_11R */
#ifdef FEATURE_WLAN_LFR
tANI_BOOLEAN csrNeighborRoamIsSsidAndSecurityMatch(
tpAniSirGlobal pMac,
tCsrRoamConnectedProfile *pCurProfile,
tSirBssDescription *pBssDesc,
tDot11fBeaconIEs *pIes)
{
tCsrAuthList authType;
tCsrEncryptionList uCEncryptionType;
tCsrEncryptionList mCEncryptionType;
tANI_BOOLEAN fMatch = FALSE;
authType.numEntries = 1;
authType.authType[0] = pCurProfile->AuthType;
uCEncryptionType.numEntries = 1;
uCEncryptionType.encryptionType[0] = pCurProfile->EncryptionType;
mCEncryptionType.numEntries = 1;
mCEncryptionType.encryptionType[0] = pCurProfile->mcEncryptionType;
if( pIes )
{
if(pIes->SSID.present)
{
fMatch = csrIsSsidMatch( pMac,
(void *)pCurProfile->SSID.ssId, pCurProfile->SSID.length,
pIes->SSID.ssid, pIes->SSID.num_ssid,
eANI_BOOLEAN_TRUE );
if(TRUE == fMatch)
{
/*
* for now we are sending NULL for all PMF related filter
* parameters during roam to the neighbor AP because
* so far 80211W spec doesn't specify anything about
* roaming scenario.
*
* Once roaming scenario is defined, we should re-visit
* this section and remove this comment.
*/
fMatch = csrIsSecurityMatch(pMac, &authType, &uCEncryptionType,
&mCEncryptionType,
NULL, NULL, NULL,
pBssDesc, pIes, NULL, NULL, NULL);
return (fMatch);
}
else
{
return (fMatch);
}
}
else
{
return FALSE; // Treat a missing SSID as a non-match.
}
}
else
{
return FALSE; // Again, treat missing pIes as a non-match.
}
}
tANI_BOOLEAN csrNeighborRoamIsNewConnectedProfile(
tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId;
tCsrRoamConnectedProfile *pCurrProfile = NULL;
tCsrRoamConnectedProfile *pPrevProfile = NULL;
tDot11fBeaconIEs *pIes = NULL;
tSirBssDescription *pBssDesc = NULL;
tANI_BOOLEAN fNew = TRUE;
if(!(pMac->roam.roamSession && CSR_IS_SESSION_VALID(pMac, sessionId)))
{
return (fNew);
}
pCurrProfile = &pMac->roam.roamSession[sessionId].connectedProfile;
if( !pCurrProfile )
{
return (fNew);
}
pPrevProfile = &pNeighborRoamInfo->prevConnProfile;
if( !pPrevProfile )
{
return (fNew);
}
pBssDesc = pPrevProfile->pBssDesc;
if (pBssDesc)
{
if (HAL_STATUS_SUCCESS(csrGetParsedBssDescriptionIEs(pMac,
pBssDesc, &pIes)) &&
csrNeighborRoamIsSsidAndSecurityMatch(pMac, pCurrProfile, pBssDesc, pIes))
{
fNew = FALSE;
}
if (pIes)
{
vos_mem_free(pIes);
}
}
if (fNew)
{
smsLog(pMac, LOG1, FL("Prev roam profile did not match current"));
}
else
{
smsLog(pMac, LOG1, FL("Prev roam profile matches current"));
}
return (fNew);
}
tANI_BOOLEAN csrNeighborRoamConnectedProfileMatch(
tpAniSirGlobal pMac,
tCsrScanResult *pResult,
tDot11fBeaconIEs *pIes)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U8 sessionId = (tANI_U8)pNeighborRoamInfo->csrSessionId;
tCsrRoamConnectedProfile *pCurProfile = NULL;
tSirBssDescription *pBssDesc = &pResult->Result.BssDescriptor;
if( !(pMac->roam.roamSession
&& CSR_IS_SESSION_VALID(pMac, sessionId)))
{
return FALSE;
}
pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile;
if( !pCurProfile)
{
return FALSE;
}
return csrNeighborRoamIsSsidAndSecurityMatch(pMac, pCurProfile, pBssDesc, pIes);
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamPrepareNonOccupiedChannelList
\brief This function is used to prepare a channel list that is derived from
the list of valid channels and does not include those in the occupied
list.
\param pMac - The handle returned by macOpen.
\param pInputChannelList - The default channels list.
\param numOfChannels - The number of channels in the default channels list.
\param pOutputChannelList - The place to put the non-occupied channel list.
\param pOutputNumOfChannels - The number of channels in the non-occupied channel list.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamPrepareNonOccupiedChannelList(
tpAniSirGlobal pMac,
tANI_U8 *pInputChannelList,
tANI_U8 numOfChannels,
tANI_U8 *pOutputChannelList,
tANI_U8 *pOutputNumOfChannels
)
{
tANI_U8 i = 0;
tANI_U8 outputNumOfChannels = 0; // Clear the output number of channels
tANI_U8 numOccupiedChannels = pMac->scan.occupiedChannels.numChannels;
tANI_U8 *pOccupiedChannelList = pMac->scan.occupiedChannels.channelList;
for (i = 0; (i < numOfChannels &&(i < WNI_CFG_VALID_CHANNEL_LIST_LEN)); i++)
{
if (!csrIsChannelPresentInList(pOccupiedChannelList, numOccupiedChannels,
pInputChannelList[i]))
{
/* DFS channel will be added in the list only when the
DFS Roaming scan flag is enabled*/
if (CSR_IS_CHANNEL_DFS(pInputChannelList[i]))
{
if (pMac->roam.configParam.allowDFSChannelRoam == TRUE)
{
pOutputChannelList[outputNumOfChannels++] = pInputChannelList[i];
}
}
else
{
pOutputChannelList[outputNumOfChannels++] = pInputChannelList[i];
}
}
}
smsLog(pMac, LOG2, FL("Number of channels in the valid channel list=%d; "
"Number of channels in the non-occupied list list=%d"),
numOfChannels, outputNumOfChannels);
// Return the number of channels
*pOutputNumOfChannels = outputNumOfChannels;
return eHAL_STATUS_SUCCESS;
}
#endif /* FEATURE_WLAN_LFR */
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamTransitToCFGChanScan
\brief This function is called whenever there is a transition to CFG chan scan
state from any state. It frees up the current channel list and allocates
a new memory for the channels received from CFG item. It then starts the
neighbor scan timer to perform the scan on each channel one by one
\param pMac - The handle returned by macOpen.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamTransitToCFGChanScan(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
int i = 0;
tANI_U8 numOfChannels = 0;
tANI_U8 channelList[WNI_CFG_VALID_CHANNEL_LIST_LEN];
tpCsrChannelInfo currChannelListInfo;
tANI_U8 scanChannelList[WNI_CFG_VALID_CHANNEL_LIST_LEN];
int outputNumOfChannels = 0;
tANI_U32 sessionId = pNeighborRoamInfo->csrSessionId;
VOS_STATUS vos_status;
vos_status = WLANTL_updateSpoofMacAddr(pMac->roam.gVosContext,
(v_MACADDR_t*)&pMac->roam.spoof_mac_addr,
(v_MACADDR_t*)&pMac->roam.roamSession[sessionId].selfMacAddr);
if (vos_status != VOS_STATUS_SUCCESS)
{
smsLog(pMac, LOGE, FL("Failed to update MAC Spoof Addr in TL"));
return vos_status;
}
currChannelListInfo = &pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo;
if (
#ifdef FEATURE_WLAN_ESE
((pNeighborRoamInfo->isESEAssoc) &&
(pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived == eANI_BOOLEAN_FALSE)) ||
(pNeighborRoamInfo->isESEAssoc == eANI_BOOLEAN_FALSE) ||
#endif // ESE
currChannelListInfo->numOfChannels == 0)
{
smsLog(pMac, LOGW, FL("Building channel list to scan"));
/* Free up the channel list and allocate a new memory. This is because we dont know how much
was allocated last time. If we directly copy more number of bytes than allocated earlier, this might
result in memory corruption */
if (NULL != currChannelListInfo->ChannelList)
{
vos_mem_free(currChannelListInfo->ChannelList);
currChannelListInfo->ChannelList = NULL;
currChannelListInfo->numOfChannels = 0;
}
// Now obtain the contents for "channelList" (the "default valid channel list") from EITHER
// the gNeighborScanChannelList in "cfg.ini", OR the actual "valid channel list" information formed by CSR.
if (0 != pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels)
{
// Copy the "default valid channel list" (channelList) from the gNeighborScanChannelList in "cfg.ini".
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, "Using the channel list from cfg.ini");
status = csrNeighborRoamMergeChannelLists(
pMac,
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList,
pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels,
channelList,
0, //NB: If 0, simply copy the input channel list to the output list.
&numOfChannels );
if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac))
{
csrNeighborRoamChannelsFilterByBand(
pMac,
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList,
pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels,
channelList,
&numOfChannels,
GetRFBand(pMac->roam.neighborRoamInfo.currAPoperationChannel));
}
if(numOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
smsLog(pMac, LOGE, FL("Received wrong number of Channel list"));
return VOS_STATUS_E_INVAL;
}
/* Remove the DFS channels from CFG channel list when '
gAllowRoamToDFS is disabled */
if ( pMac->roam.configParam.allowDFSChannelRoam == FALSE)
{
for (i=0; i<numOfChannels; i++)
{
if ( !(CSR_IS_CHANNEL_DFS(channelList[i])))
{
scanChannelList[outputNumOfChannels++] = channelList[i];
}
}
}
else
{ /* Move all the channels to roam scan channel list */
vos_mem_copy(scanChannelList,
channelList,
numOfChannels * sizeof(tANI_U8));
outputNumOfChannels = numOfChannels;
}
if (outputNumOfChannels == 0)
{
smsLog(pMac, LOGE, FL("No channels to scan"));
return VOS_STATUS_E_FAILURE;
}
currChannelListInfo->ChannelList =
vos_mem_malloc(outputNumOfChannels*sizeof(tANI_U8));
if (NULL == currChannelListInfo->ChannelList)
{
smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed"));
return VOS_STATUS_E_RESOURCES;
}
currChannelListInfo->numOfChannels = outputNumOfChannels;
vos_mem_copy(currChannelListInfo->ChannelList,
scanChannelList, outputNumOfChannels * sizeof(tANI_U8));
}
#ifdef FEATURE_WLAN_LFR
else if ((pNeighborRoamInfo->uScanMode == DEFAULT_SCAN) &&
(abs(pNeighborRoamInfo->lookupDOWNRssi) >
abs(pNeighborRoamInfo->cfgParams.neighborReassocThreshold)))
{
/*
* Trigger a contiguous scan on all channels when the
* RSSI in the lookup DOWN notification is below reassoc
* threshold. This will help us find the best available
* candidate and also update the channel cache.
*/
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "Triggering contiguous scan "
"(lookupDOWNRssi=%d,reassocThreshold=%d)",
pNeighborRoamInfo->lookupDOWNRssi,
pNeighborRoamInfo->cfgParams.neighborReassocThreshold*(-1));
pNeighborRoamInfo->scanRequestTimeStamp =
vos_timer_get_system_time();
vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer);
/* We are about to start a fresh scan cycle,
* purge non-P2P results from the past */
csrScanFlushSelectiveResult(pMac, VOS_FALSE);
csrNeighborRoamPerformContiguousBgScan(pMac, sessionId);
/* Transition to CFG_CHAN_LIST_SCAN */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN);
return VOS_STATUS_SUCCESS;
}
#endif
else
{
numOfChannels = pMac->scan.occupiedChannels.numChannels;
if (numOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
numOfChannels = WNI_CFG_VALID_CHANNEL_LIST_LEN;
}
if (numOfChannels
#ifdef FEATURE_WLAN_LFR
&& ((pNeighborRoamInfo->uScanMode == SPLIT_SCAN_OCCUPIED_LIST) ||
(pNeighborRoamInfo->uEmptyScanCount == 0) ||
((pNeighborRoamInfo->uEmptyScanCount % 2) == 1))
#endif
)
{
/*
* Always scan channels in the occupied channel list
* before scanning on the non-occupied list.
*/
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "Switching to occupied channel list"
#ifdef FEATURE_WLAN_LFR
"-uScanMode=%d, uEmptyScanCount=%d",
pNeighborRoamInfo->uScanMode,
pNeighborRoamInfo->uEmptyScanCount
#endif
);
if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac))
{
csrNeighborRoamChannelsFilterByBand(
pMac,
pMac->scan.occupiedChannels.channelList,
numOfChannels,
channelList,
&numOfChannels,
GetRFBand(pMac->roam.neighborRoamInfo.currAPoperationChannel));
}
else
{
vos_mem_copy(channelList,
pMac->scan.occupiedChannels.channelList,
numOfChannels * sizeof(tANI_U8));
}
/* Remove the DFS channels from CFG channel list when '
gAllowRoamToDFS is disabled */
if ( pMac->roam.configParam.allowDFSChannelRoam == FALSE)
{
for (i=0; i<numOfChannels; i++)
{
if ( !(CSR_IS_CHANNEL_DFS(channelList[i])))
{
scanChannelList[outputNumOfChannels++] = channelList[i];
}
}
}
else
{
vos_mem_copy(scanChannelList,
channelList,
numOfChannels * sizeof(tANI_U8));
outputNumOfChannels = numOfChannels;
}
if (outputNumOfChannels == 0)
{
smsLog(pMac, LOGE, FL("No channels to scan"));
return VOS_STATUS_E_FAILURE;
}
currChannelListInfo->ChannelList = vos_mem_malloc(outputNumOfChannels * sizeof(tANI_U8));
if (NULL == currChannelListInfo->ChannelList)
{
smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed"));
return VOS_STATUS_E_RESOURCES;
}
currChannelListInfo->numOfChannels = outputNumOfChannels;
vos_mem_copy(currChannelListInfo->ChannelList,
scanChannelList,
outputNumOfChannels * sizeof(tANI_U8));
}
else
{
/* Scan all channels from non-occupied list */
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "Get valid channel list");
numOfChannels = sizeof(pMac->roam.validChannelList);
if(HAL_STATUS_SUCCESS(csrGetCfgValidChannels(pMac,
(tANI_U8 *)pMac->roam.validChannelList,
(tANI_U32 *) &numOfChannels)))
{
#ifdef FEATURE_WLAN_LFR
/*
* Prepare non-occupied channel list (channelList)
* from the actual "valid channel list" information
* formed by CSR.
*/
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, "Switching to non-occupied channel list");
status = csrNeighborRoamPrepareNonOccupiedChannelList(pMac,
(tANI_U8 *)pMac->roam.validChannelList,
numOfChannels,
channelList,
&numOfChannels);
#else
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, "Merging channel list");
status = csrNeighborRoamMergeChannelLists(
pMac,
(tANI_U8 *)pMac->roam.validChannelList,
numOfChannels, // The number of channels in the validChannelList
channelList,
0, //NB: If 0, simply copy the input channel list to the output list.
&numOfChannels ); // The final number of channels in the output list. Will be numOfChannels
#endif
}
else
{
smsLog(pMac, LOGE, FL("Could not get valid channel list"));
return VOS_STATUS_E_FAILURE;
}
if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac))
{
csrNeighborRoamChannelsFilterByBand(
pMac,
(tANI_U8 *)pMac->roam.validChannelList,
numOfChannels,
channelList,
&numOfChannels,
GetRFBand(pMac->roam.neighborRoamInfo.currAPoperationChannel));
}
if (numOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN)
{
numOfChannels = WNI_CFG_VALID_CHANNEL_LIST_LEN;
}
if (numOfChannels == 0)
{
smsLog(pMac, LOGE, FL("No channels to scan"));
return VOS_STATUS_E_FAILURE;
}
currChannelListInfo->ChannelList =
vos_mem_malloc(numOfChannels*sizeof(tANI_U8));
if (NULL == currChannelListInfo->ChannelList)
{
smsLog(pMac, LOGE, FL("Memory allocation for Channel list failed"));
return VOS_STATUS_E_RESOURCES;
}
currChannelListInfo->numOfChannels = numOfChannels;
#ifdef FEATURE_WLAN_LFR
vos_mem_copy(currChannelListInfo->ChannelList,
channelList, numOfChannels * sizeof(tANI_U8));
#else
vos_mem_copy(currChannelListInfo->ChannelList,
(tANI_U8 *)pMac->roam.validChannelList,
numOfChannels * sizeof(tANI_U8));
#endif
}
}
NEIGHBOR_ROAM_DEBUG(pMac, LOGW,
"Number of channels from CFG (or) (non-)occupied list=%d",
currChannelListInfo->numOfChannels);
for (i = 0; i < currChannelListInfo->numOfChannels; i++)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, "Channel List from CFG (or) (non-)occupied list"
"= %d", currChannelListInfo->ChannelList[i]);
}
}
/* We are gonna scan now. Remember the time stamp to filter out results only after this timestamp */
pNeighborRoamInfo->scanRequestTimeStamp = vos_timer_get_system_time();
vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer);
/* Start Neighbor scan timer now. Multiplication by PAL_TIMER_TO_MS_UNIT is to convert ms to us which is
what palTimerStart expects */
status = vos_timer_start(&pNeighborRoamInfo->neighborScanTimer,
pNeighborRoamInfo->cfgParams.neighborScanPeriod);
if (eHAL_STATUS_SUCCESS != status)
{
/* Timer start failed.. */
smsLog(pMac, LOGE, FL("Neighbor scan PAL Timer start failed, status = %d, Ignoring state transition"), status);
vos_mem_free(currChannelListInfo->ChannelList);
currChannelListInfo->ChannelList = NULL;
currChannelListInfo->numOfChannels = 0;
return VOS_STATUS_E_FAILURE;
}
pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0;
pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_TRUE;
/* We are about to start a fresh scan cycle,
* purge non-P2P results from the past */
csrScanFlushSelectiveResult(pMac, VOS_FALSE);
/* We are about to start a fresh scan cycle,
* purge failed pre-auth results from the past */
csrNeighborRoamPurgePreauthFailedList(pMac);
/* Transition to CFG_CHAN_LIST_SCAN_STATE */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN)
return VOS_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamNeighborLookupUpEvent
\brief This function is called as soon as TL indicates that the current AP's
RSSI is better than the neighbor lookup threshold. Here, we transition to
CONNECTED state and reset all the scan parameters
\param pMac - The handle returned by macOpen.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamNeighborLookupUpEvent(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus;
csrNeighborRoamDeregAllRssiIndication(pMac);
/* Recheck whether the below check is needed. */
if ((pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_CONNECTED)
&& (pNeighborRoamInfo->neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING))
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED)
#ifdef FEATURE_WLAN_LFR
if (!csrRoamIsFastRoamEnabled(pMac,pMac->roam.neighborRoamInfo.csrSessionId))
{
smsLog(pMac, LOGE, FL("Received when fast roam is disabled. Ignore it"));
return eHAL_STATUS_SUCCESS;
}
#endif
/* Reset all the neighbor roam info control variables. Free all the allocated memory. It is like we are just associated now */
csrNeighborRoamResetConnectedStateControlInfo(pMac);
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering DOWN event neighbor lookup callback with TL. RSSI = %d,"), pNeighborRoamInfo->currentNeighborLookupThreshold * (-1));
/* Register Neighbor Lookup threshold callback with TL for DOWN event now */
vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1),
WLANTL_HO_THRESHOLD_DOWN,
csrNeighborRoamNeighborLookupDOWNCallback,
VOS_MODULE_ID_SME, pMac);
#ifdef FEATURE_WLAN_LFR
pNeighborRoamInfo->lookupDOWNRssi = 0;
#endif
if(!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback DOWN event with TL: Status = %d"), vosStatus);
}
return vosStatus;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamNeighborLookupDownEvent
\brief This function is called as soon as TL indicates that the current AP's
RSSI falls below the current eighbor lookup threshold. Here, we transition to
REPORT_QUERY for 11r association and CFG_CHAN_LIST_SCAN state if the assoc is
a non-11R association.
\param pMac - The handle returned by macOpen.
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamNeighborLookupDownEvent(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
eHalStatus status = eHAL_STATUS_SUCCESS;
switch (pNeighborRoamInfo->neighborRoamState)
{
case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED:
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Deregistering DOWN event neighbor lookup callback with TL. RSSI = %d,"),
pNeighborRoamInfo->currentNeighborLookupThreshold * (-1));
/* De-register Neighbor Lookup threshold callback with TL */
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))
{
//err msg
smsLog(pMac, LOGW, FL(" Couldn't Deregister csrNeighborRoamNeighborLookupCallback DOWN event from TL: Status = %d"), vosStatus);
}
#ifdef FEATURE_WLAN_LFR
if (!csrRoamIsFastRoamEnabled(pMac,pMac->roam.neighborRoamInfo.csrSessionId))
{
smsLog(pMac, LOGE, FL("Received when fast roam is disabled. Ignore it"));
return eHAL_STATUS_SUCCESS;
}
#endif
#if defined WLAN_FEATURE_VOWIFI_11R && defined WLAN_FEATURE_VOWIFI
if ((pNeighborRoamInfo->is11rAssoc) && (pMac->rrm.rrmSmeContext.rrmConfig.rrmEnabled))
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("11R Association:Neighbor Lookup Down event received in CONNECTED state"));
vosStatus = csrNeighborRoamIssueNeighborRptRequest(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
smsLog(pMac, LOGE, FL("Neighbor report request failed. status = %d"), vosStatus);
return vosStatus;
}
/* Increment the neighbor report retry count after sending the neighbor request successfully */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum++;
pNeighborRoamInfo->FTRoamInfo.neighborRptPending = eANI_BOOLEAN_TRUE;
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REPORT_QUERY)
}
else
#endif
{
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Non 11R or ESE Association:Neighbor Lookup Down event received in CONNECTED state"));
vosStatus = csrNeighborRoamTransitToCFGChanScan(pMac);
if (VOS_STATUS_SUCCESS != vosStatus)
{
NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("csrNeighborRoamTransitToCFGChanScan failed"
" with status=%d"), vosStatus);
return vosStatus;
}
}
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("Registering UP event neighbor lookup callback with TL. RSSI = %d,"), NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1));
/* Register Neighbor Lookup threshold callback with TL for UP event now */
vosStatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext,
(v_S7_t)NEIGHBOR_ROAM_LOOKUP_UP_THRESHOLD * (-1),
WLANTL_HO_THRESHOLD_UP,
csrNeighborRoamNeighborLookupUPCallback,
VOS_MODULE_ID_SME, pMac);
if(!VOS_IS_STATUS_SUCCESS(vosStatus))
{
//err msg
smsLog(pMac, LOGE, FL(" Couldn't register csrNeighborRoamNeighborLookupCallback UP event with TL: Status = %d"), status);
}
break;
default:
smsLog(pMac, LOGE, FL("DOWN event received in invalid"
"state %s ..Ignoring..."),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
break;
}
return vosStatus;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamNeighborLookupUPCallback
\brief This function is registered with TL to indicate whenever the RSSI
gets better than the neighborLookup RSSI Threshold
\param pAdapter - VOS Context
trafficStatus - UP/DOWN indication from TL
pUserCtxt - Parameter for callback registered during callback registration. Should be pMac
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamNeighborLookupUPCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification,
v_PVOID_t pUserCtxt,
v_S7_t avgRssi)
{
tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt );
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS;
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Neighbor Lookup UP indication callback called with notification %d Reported RSSI = %d"),
rssiNotification,
avgRssi);
if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId))
{
smsLog(pMac, LOGW, "Ignoring the indication as we are not connected");
return VOS_STATUS_SUCCESS;
}
VOS_ASSERT(WLANTL_HO_THRESHOLD_UP == rssiNotification);
vosStatus = csrNeighborRoamNeighborLookupUpEvent(pMac);
return vosStatus;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamNeighborLookupDOWNCallback
\brief This function is registered with TL to indicate whenever the RSSI
falls below the current neighborLookup RSSI Threshold
\param pAdapter - VOS Context
trafficStatus - UP/DOWN indication from TL
pUserCtxt - Parameter for callback registered during callback registration. Should be pMac
\return VOS_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
VOS_STATUS csrNeighborRoamNeighborLookupDOWNCallback (v_PVOID_t pAdapter, v_U8_t rssiNotification,
v_PVOID_t pUserCtxt,
v_S7_t avgRssi)
{
tpAniSirGlobal pMac = PMAC_STRUCT( pUserCtxt );
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
VOS_STATUS vosStatus = eHAL_STATUS_SUCCESS;
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Neighbor Lookup DOWN indication callback called with notification %d Reported RSSI = %d"),
rssiNotification,
avgRssi);
#ifdef FEATURE_WLAN_LFR
pNeighborRoamInfo->lookupDOWNRssi = avgRssi;
#endif
if(!csrIsConnStateConnectedInfra(pMac, pNeighborRoamInfo->csrSessionId))
{
smsLog(pMac, LOGW, "Ignoring the indication as we are not connected");
return VOS_STATUS_SUCCESS;
}
VOS_ASSERT(WLANTL_HO_THRESHOLD_DOWN == rssiNotification);
vosStatus = csrNeighborRoamNeighborLookupDownEvent(pMac);
return vosStatus;
}
#ifdef RSSI_HACK
extern int dumpCmdRSSI;
#endif
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamIndicateDisconnect
\brief This function is called by CSR as soon as the station disconnects from
the AP. This function does the necessary cleanup of neighbor roam data
structures. Neighbor roam state transitions to INIT state whenever this
function is called except if the current state is REASSOCIATING
\param pMac - The handle returned by macOpen.
sessionId - CSR session id that got disconnected
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamIndicateDisconnect(tpAniSirGlobal pMac, tANI_U8 sessionId)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
#ifdef FEATURE_WLAN_LFR
tCsrRoamConnectedProfile *pPrevProfile = &pNeighborRoamInfo->prevConnProfile;
#endif
tCsrRoamSession *pSession = CSR_GET_SESSION( pMac, sessionId);
if (NULL == pSession)
{
smsLog(pMac, LOGE, FL("pSession is NULL "));
return eHAL_STATUS_FAILURE;
}
VOS_TRACE(VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_INFO,
FL("Disconnect indication on session %d in state %s"
"from BSSID : "
MAC_ADDRESS_STR), sessionId,
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState),
MAC_ADDR_ARRAY(pSession->connectedProfile.bssid));
#ifdef FEATURE_WLAN_LFR
/*Free the current previous profile and move the current profile to prev profile.*/
csrRoamFreeConnectProfile(pMac, pPrevProfile);
csrRoamCopyConnectProfile(pMac, sessionId, pPrevProfile);
#endif
if (NULL != pSession)
{
if (NULL != pSession->pCurRoamProfile)
{
if (VOS_STA_MODE != pMac->roam.roamSession[sessionId].pCurRoamProfile->csrPersona)
{
smsLog(pMac, LOGE, FL("Ignoring Disconnect indication received from a non STA persona."
"sessionId: %d, csrPersonna %d"), sessionId,
(int)pMac->roam.roamSession[sessionId].pCurRoamProfile->csrPersona);
return eHAL_STATUS_SUCCESS;
}
}
#ifdef FEATURE_WLAN_ESE
if (pSession->connectedProfile.isESEAssoc)
{
vos_mem_copy(&pSession->prevApSSID, &pSession->connectedProfile.SSID,
sizeof(tSirMacSSid));
vos_mem_copy(pSession->prevApBssid, pSession->connectedProfile.bssid,
sizeof(tSirMacAddr));
pSession->prevOpChannel = pSession->connectedProfile.operationChannel;
pSession->isPrevApInfoValid = TRUE;
pSession->roamTS1 = vos_timer_get_system_time();
}
#endif
} //if (NULL != pSession)
#ifdef RSSI_HACK
dumpCmdRSSI = -40;
#endif
switch (pNeighborRoamInfo->neighborRoamState)
{
case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING:
// Stop scan and neighbor refresh timers.
// These are indeed not required when we are in reassociating
// state.
vos_timer_stop(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_stop(&pNeighborRoamInfo->neighborResultsRefreshTimer);
vos_timer_stop(&pNeighborRoamInfo->emptyScanRefreshTimer);
if (!CSR_IS_ROAM_SUBSTATE_DISASSOC_HO( pMac, sessionId )) {
/*
* Disconnect indication during Disassoc Handoff sub-state
* is received when we are trying to disconnect with the old
* AP during roam. BUT, if receive a disconnect indication
* outside of Disassoc Handoff sub-state, then it means that
* this is a genuine disconnect and we need to clean up.
* Otherwise, we will be stuck in reassoc state which will
* in-turn block scans (see csrIsScanAllowed).
*/
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT);
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
#endif
}
break;
case eCSR_NEIGHBOR_ROAM_STATE_INIT:
csrNeighborRoamResetInitStateControlInfo(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (!csrRoamIsRoamOffloadScanEnabled(pMac))
{
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif
break;
case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED:
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
csrNeighborRoamResetConnectedStateControlInfo(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (!csrRoamIsRoamOffloadScanEnabled(pMac))
{
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif
#ifdef WLAN_FEATURE_LFR_MBB
csr_stop_preauth_reassoc_mbb_timer(pMac);
#endif
break;
case eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN:
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT);
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
csrNeighborRoamResetCfgListChanScanControlInfo(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
if (!csrRoamIsRoamOffloadScanEnabled(pMac))
{
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif
break;
case eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE:
/* Stop pre-auth to reassoc interval timer */
vos_timer_stop(&pMac->ft.ftSmeContext.preAuthReassocIntvlTimer);
case eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN:
case eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING:
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
csrNeighborRoamResetPreauthControlInfo(pMac);
csrNeighborRoamResetReportScanStateControlInfo(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (!csrRoamIsRoamOffloadScanEnabled(pMac))
{
#endif
csrNeighborRoamDeregAllRssiIndication(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif
break;
default:
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Received disconnect event"
"in state %s"),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Transitioning to INIT state"));
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
#endif
break;
}
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
/*Inform the Firmware to STOP Scanning as the host has a disconnect.*/
if (csrRoamIsStaMode(pMac, sessionId))
{
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_STOP, REASON_DISCONNECTED);
}
#endif
return eHAL_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamIndicateConnect
\brief This function is called by CSR as soon as the station connects to an AP.
This initializes all the necessary data structures related to the
associated AP and transitions the state to CONNECTED state
\param pMac - The handle returned by macOpen.
sessionId - CSR session id that got connected
vosStatus - connect status SUCCESS/FAILURE
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamIndicateConnect(tpAniSirGlobal pMac, tANI_U8 sessionId, VOS_STATUS vosStatus)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
VOS_STATUS vstatus;
#if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR)
int init_ft_flag = FALSE;
#endif
// if session id invalid then we need return failure
if (NULL == pNeighborRoamInfo || !CSR_IS_SESSION_VALID(pMac, sessionId) ||
(NULL == pMac->roam.roamSession[sessionId].pCurRoamProfile))
{
return eHAL_STATUS_FAILURE;
}
smsLog(pMac, LOG2, FL("Connect indication received with session id %d"
"in state %s"),
sessionId, macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
// Bail out if this is NOT a STA persona
if (pMac->roam.roamSession[sessionId].pCurRoamProfile->csrPersona != VOS_STA_MODE)
{
smsLog(pMac, LOGE, FL("Ignoring Connect indication received from a non STA persona."
"sessionId: %d, csrPersonna %d"),
sessionId,
(int)pMac->roam.roamSession[sessionId].pCurRoamProfile->csrPersona);
return eHAL_STATUS_SUCCESS;
}
// if a concurrent session is running
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (eANI_BOOLEAN_FALSE == CSR_IS_FASTROAM_IN_CONCURRENCY_INI_FEATURE_ENABLED(pMac))
{
#endif
if (csrIsConcurrentSessionRunning(pMac))
{
smsLog(pMac, LOGE, FL("Ignoring Connect indication received in multisession %d"),
csrIsConcurrentSessionRunning(pMac));
return eHAL_STATUS_SUCCESS;
}
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif
switch (pNeighborRoamInfo->neighborRoamState)
{
#ifdef WLAN_FEATURE_LFR_MBB
case eCSR_NEIGHBOR_ROAM_STATE_MBB_PREAUTH_REASSOC:
#endif
case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING:
if (VOS_STATUS_SUCCESS != vosStatus)
{
/* Just transition the state to INIT state. Rest of the clean up happens when we get next connect indication */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
#endif
break;
}
/* Fall through if the status is SUCCESS */
case eCSR_NEIGHBOR_ROAM_STATE_INIT:
/* Reset all the data structures here */
csrNeighborRoamResetInitStateControlInfo(pMac);
pNeighborRoamInfo->csrSessionId = sessionId;
#ifdef FEATURE_WLAN_LFR
/*
* Initialize the occupied list ONLY if we are
* transitioning from INIT state to CONNECTED state.
*/
if (eCSR_NEIGHBOR_ROAM_STATE_INIT == pNeighborRoamInfo->neighborRoamState)
csrInitOccupiedChannelsList(pMac);
#endif
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
vos_mem_copy(pNeighborRoamInfo->currAPbssid,
pMac->roam.roamSession[sessionId].connectedProfile.bssid, sizeof(tCsrBssid));
pNeighborRoamInfo->currAPoperationChannel = pMac->roam.roamSession[sessionId].connectedProfile.operationChannel;
pNeighborRoamInfo->currentNeighborLookupThreshold =
pNeighborRoamInfo->cfgParams.neighborLookupThreshold;
#ifdef FEATURE_WLAN_LFR
pNeighborRoamInfo->uEmptyScanCount = 0;
pNeighborRoamInfo->lookupDOWNRssi = 0;
pNeighborRoamInfo->uScanMode = DEFAULT_SCAN;
#endif
#if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR)
/* Now we can clear the preauthDone that was saved as we are connected afresh */
csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList);
#endif
#ifdef WLAN_FEATURE_VOWIFI_11R
// Based on the auth scheme tell if we are 11r
if ( csrIsAuthType11r( pMac->roam.roamSession[sessionId].connectedProfile.AuthType,
pMac->roam.roamSession[sessionId].connectedProfile.MDID.mdiePresent))
{
if (pMac->roam.configParam.isFastTransitionEnabled)
init_ft_flag = TRUE;
pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_TRUE;
}
else
pNeighborRoamInfo->is11rAssoc = eANI_BOOLEAN_FALSE;
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("11rAssoc is = %d"), pNeighborRoamInfo->is11rAssoc);
#endif
#ifdef FEATURE_WLAN_ESE
// Based on the auth scheme tell if we are 11r
if (pMac->roam.roamSession[sessionId].connectedProfile.isESEAssoc)
{
if (pMac->roam.configParam.isFastTransitionEnabled)
init_ft_flag = TRUE;
pNeighborRoamInfo->isESEAssoc = eANI_BOOLEAN_TRUE;
}
else
pNeighborRoamInfo->isESEAssoc = eANI_BOOLEAN_FALSE;
NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("isESEAssoc is = %d ft = %d"),
pNeighborRoamInfo->isESEAssoc, init_ft_flag);
#endif
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;
}
#ifdef FEATURE_WLAN_LFR
// If "Legacy Fast Roaming" is enabled
if (csrRoamIsFastRoamEnabled(pMac, sessionId))
{
init_ft_flag = TRUE;
}
#endif
#if defined (WLAN_FEATURE_VOWIFI_11R) || defined (FEATURE_WLAN_ESE) || defined(FEATURE_WLAN_LFR)
if ( init_ft_flag == TRUE )
{
/* Initialize all the data structures needed for the 11r FT Preauth */
pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0;
csrNeighborRoamPurgePreauthFailedList(pMac);
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
if (csrRoamIsRoamOffloadScanEnabled(pMac))
{
/*If this is not a INFRA type BSS, then do not send the command
* down to firmware.Do not send the START command for other session
* connections.*/
if(csrRoamIsStaMode(pMac, sessionId))
{
pNeighborRoamInfo->uOsRequestedHandoff = 0;
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
if(pNeighborRoamInfo->cfgParams.neighborInitialForcedRoamTo5GhEnable &&
(GetRFBand(pNeighborRoamInfo->currAPoperationChannel) ==
SIR_BAND_2_4_GHZ))
{
/*
* Keep 5G and Fwr roaming mutually exclusive so do not
* send RSO start Note we have to send RSO start in all
* errro case.
*/
smsLog(pMac, LOG1,
FL("Do not send RSO start"
"because 5G force roaming is enabled"));
break;
}
csrRoamOffloadScan(pMac, 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);
/* Register Neighbor Lookup threshold callback with TL for DOWN event only */
vstatus = WLANTL_RegRSSIIndicationCB(pMac->roam.gVosContext, (v_S7_t)pNeighborRoamInfo->currentNeighborLookupThreshold * (-1),
WLANTL_HO_THRESHOLD_DOWN,
csrNeighborRoamNeighborLookupDOWNCallback,
VOS_MODULE_ID_SME, pMac);
#ifdef FEATURE_WLAN_LFR
pNeighborRoamInfo->lookupDOWNRssi = 0;
#endif
if(!VOS_IS_STATUS_SUCCESS(vstatus))
{
//err msg
smsLog(pMac, LOGW, FL(" Couldn't register csrNeighborRoamNeighborLookupDOWNCallback with TL: Status = %d"), vstatus);
status = eHAL_STATUS_FAILURE;
}
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
}
#endif /* WLAN_FEATURE_ROAM_SCAN_OFFLOAD */
}
#endif
break;
default:
smsLog(pMac, LOGE, FL("Connect event received in invalid state %s"
"..Ignoring..."),
macTraceGetNeighbourRoamState(
pNeighborRoamInfo->neighborRoamState));
break;
}
return status;
}
#ifdef WLAN_FEATURE_VOWIFI_11R
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamPurgePreauthFailedList
\brief This function purges all the MAC addresses in the pre-auth fail list
\param pMac - The handle returned by macOpen.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamPurgePreauthFailedList(tpAniSirGlobal pMac)
{
tANI_U8 i;
for (i = 0; i < pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress; i++)
{
vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.macAddress[i], sizeof(tSirMacAddr));
}
pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthFailList.numMACAddress = 0;
return;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamInit11rAssocInfo
\brief This function initializes 11r related neighbor roam data structures
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamInit11rAssocInfo(tpAniSirGlobal pMac)
{
eHalStatus status;
tpCsr11rAssocNeighborInfo pFTRoamInfo = &pMac->roam.neighborRoamInfo.FTRoamInfo;
pMac->roam.neighborRoamInfo.is11rAssoc = eANI_BOOLEAN_FALSE;
pMac->roam.neighborRoamInfo.cfgParams.maxNeighborRetries = pMac->roam.configParam.neighborRoamConfig.nMaxNeighborRetries;
pFTRoamInfo->neighborReportTimeout = CSR_NEIGHBOR_ROAM_REPORT_QUERY_TIMEOUT;
pFTRoamInfo->PEPreauthRespTimeout = CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * pMac->roam.neighborRoamInfo.cfgParams.neighborScanPeriod;
pFTRoamInfo->neighborRptPending = eANI_BOOLEAN_FALSE;
pFTRoamInfo->preauthRspPending = eANI_BOOLEAN_FALSE;
pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0;
pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0;
vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo,
sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT);
status = csrLLOpen(pMac->hHdd, &pFTRoamInfo->preAuthDoneList);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("LL Open of preauth done AP List failed"));
return eHAL_STATUS_RESOURCES;
}
return status;
}
#endif /* WLAN_FEATURE_VOWIFI_11R */
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamInit
\brief This function initializes neighbor roam data structures
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamInit(tpAniSirGlobal pMac)
{
eHalStatus status;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
pNeighborRoamInfo->neighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED;
pNeighborRoamInfo->prevNeighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED;
pNeighborRoamInfo->csrSessionId = CSR_SESSION_ID_INVALID;
pNeighborRoamInfo->cfgParams.maxChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMaxChanTime;
pNeighborRoamInfo->cfgParams.minChannelScanTime = pMac->roam.configParam.neighborRoamConfig.nNeighborScanMinChanTime;
pNeighborRoamInfo->cfgParams.maxNeighborRetries = 0;
pNeighborRoamInfo->cfgParams.neighborLookupThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborLookupRssiThreshold;
pNeighborRoamInfo->cfgParams.neighborReassocThreshold = pMac->roam.configParam.neighborRoamConfig.nNeighborReassocRssiThreshold;
pNeighborRoamInfo->cfgParams.neighborScanPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborScanTimerPeriod;
pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod = pMac->roam.configParam.neighborRoamConfig.nNeighborResultsRefreshPeriod;
pNeighborRoamInfo->cfgParams.emptyScanRefreshPeriod = pMac->roam.configParam.neighborRoamConfig.nEmptyScanRefreshPeriod;
pNeighborRoamInfo->cfgParams.neighborInitialForcedRoamTo5GhEnable = pMac->roam.configParam.neighborRoamConfig.nNeighborInitialForcedRoamTo5GhEnable;
pNeighborRoamInfo->cfgParams.WeakZoneRssiThresholdForRoam =
pMac->roam.configParam.neighborRoamConfig.nWeakZoneRssiThresholdForRoam;
pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels =
pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels;
if (pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels != 0)
{
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList =
vos_mem_malloc(pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels);
if (NULL == pNeighborRoamInfo->cfgParams.channelInfo.ChannelList)
{
smsLog(pMac, LOGE, FL("Memory Allocation for CFG Channel List failed"));
return eHAL_STATUS_RESOURCES;
}
/* Update the roam global structure from CFG */
vos_mem_copy(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList,
pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.channelList,
pMac->roam.configParam.neighborRoamConfig.neighborScanChanList.numChannels);
}
else
{
smsLog(pMac, LOGW,
FL("invalid neighbor roam channel list: %u"),
pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels);
}
vos_mem_set(pNeighborRoamInfo->currAPbssid, sizeof(tCsrBssid), 0);
pNeighborRoamInfo->currentNeighborLookupThreshold = pMac->roam.neighborRoamInfo.cfgParams.neighborLookupThreshold;
#ifdef FEATURE_WLAN_LFR
pNeighborRoamInfo->lookupDOWNRssi = 0;
pNeighborRoamInfo->uEmptyScanCount = 0;
pNeighborRoamInfo->uScanMode = DEFAULT_SCAN;
vos_mem_set(&pNeighborRoamInfo->prevConnProfile, sizeof(tCsrRoamConnectedProfile), 0);
#endif
pNeighborRoamInfo->scanRspPending = eANI_BOOLEAN_FALSE;
status = vos_timer_init(&pNeighborRoamInfo->neighborScanTimer, VOS_TIMER_TYPE_SW,
csrNeighborRoamNeighborScanTimerCallback, (void *)pMac);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Neighbor scan timer allocation failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
return eHAL_STATUS_RESOURCES;
}
status = vos_timer_init(&pNeighborRoamInfo->neighborResultsRefreshTimer, VOS_TIMER_TYPE_SW,
csrNeighborRoamResultsRefreshTimerCallback, (void *)pMac);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Neighbor results refresh timer allocation failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
return eHAL_STATUS_RESOURCES;
}
status = vos_timer_init(&pNeighborRoamInfo->emptyScanRefreshTimer, VOS_TIMER_TYPE_SW,
csrNeighborRoamEmptyScanRefreshTimerCallback,
(void *)pMac);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("Empty scan refresh timer allocation failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_destroy(&pNeighborRoamInfo->neighborResultsRefreshTimer);
return eHAL_STATUS_RESOURCES;
}
status = vos_timer_init(&pNeighborRoamInfo->forcedInitialRoamTo5GHTimer, VOS_TIMER_TYPE_SW,
csrForcedInitialRoamTo5GHTimerCallback, (void *)pMac);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("forcedInitialRoamTo5GHTimer timer allocation failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_destroy(&pNeighborRoamInfo->neighborResultsRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->emptyScanRefreshTimer);
return eHAL_STATUS_RESOURCES;
}
status = csrLLOpen(pMac->hHdd, &pNeighborRoamInfo->roamableAPList);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_destroy(&pNeighborRoamInfo->neighborResultsRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->emptyScanRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->forcedInitialRoamTo5GHTimer);
return eHAL_STATUS_RESOURCES;
}
pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL;
pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE;
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_VOWIFI_11R
status = csrNeighborRoamInit11rAssocInfo(pMac);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("LL Open of roamable AP List failed"));
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_destroy(&pNeighborRoamInfo->neighborResultsRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->emptyScanRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->forcedInitialRoamTo5GHTimer);
csrLLClose(&pNeighborRoamInfo->roamableAPList);
return eHAL_STATUS_RESOURCES;
}
#endif
/* Initialize this with the current tick count */
pNeighborRoamInfo->scanRequestTimeStamp = vos_timer_get_system_time();
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
#endif
//Set the Last Sent Cmd as RSO_STOP
pNeighborRoamInfo->lastSentCmd = ROAM_SCAN_OFFLOAD_STOP;
return eHAL_STATUS_SUCCESS;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamClose
\brief This function closes/frees all the neighbor roam data structures
\param pMac - The handle returned by macOpen.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamClose(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
if (eCSR_NEIGHBOR_ROAM_STATE_CLOSED == pNeighborRoamInfo->neighborRoamState)
{
smsLog(pMac, LOGW, FL("Neighbor Roam Algorithm Already Closed"));
return;
}
if (pNeighborRoamInfo->cfgParams.channelInfo.ChannelList)
vos_mem_free(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList);
pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL;
vos_timer_destroy(&pNeighborRoamInfo->neighborScanTimer);
vos_timer_destroy(&pNeighborRoamInfo->neighborResultsRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->emptyScanRefreshTimer);
vos_timer_destroy(&pNeighborRoamInfo->forcedInitialRoamTo5GHTimer);
/* Should free up the nodes in the list before closing the double Linked list */
csrNeighborRoamFreeRoamableBSSList(pMac, &pNeighborRoamInfo->roamableAPList);
csrLLClose(&pNeighborRoamInfo->roamableAPList);
if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList)
{
vos_mem_free(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList);
}
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL;
pNeighborRoamInfo->roamChannelInfo.currentChanIndex = CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.numOfChannels = 0;
pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = NULL;
pNeighborRoamInfo->roamChannelInfo.chanListScanInProgress = eANI_BOOLEAN_FALSE;
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
/* Free the profile.. */
csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile);
#ifdef FEATURE_WLAN_LFR
csrRoamFreeConnectProfile(pMac, &pNeighborRoamInfo->prevConnProfile);
#endif
#ifdef WLAN_FEATURE_VOWIFI_11R
pMac->roam.neighborRoamInfo.FTRoamInfo.currentNeighborRptRetryNum = 0;
pMac->roam.neighborRoamInfo.FTRoamInfo.numBssFromNeighborReport = 0;
vos_mem_zero(pMac->roam.neighborRoamInfo.FTRoamInfo.neighboReportBssInfo,
sizeof(tCsrNeighborReportBssInfo) * MAX_BSS_IN_NEIGHBOR_RPT);
csrNeighborRoamFreeRoamableBSSList(pMac, &pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList);
csrLLClose(&pMac->roam.neighborRoamInfo.FTRoamInfo.preAuthDoneList);
#endif /* WLAN_FEATURE_VOWIFI_11R */
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_CLOSED)
return;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamRequestHandoff
\brief This function triggers actual switching from one AP to the new AP.
It issues disassociate with reason code as Handoff and CSR as a part of
handling disassoc rsp, issues reassociate to the new AP
\param pMac - The handle returned by macOpen.
\return VOID
---------------------------------------------------------------------------*/
void csrNeighborRoamRequestHandoff(tpAniSirGlobal pMac)
{
tCsrRoamInfo roamInfo;
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tANI_U32 sessionId = pNeighborRoamInfo->csrSessionId;
tCsrNeighborRoamBSSInfo handoffNode;
extern void csrRoamRoamingStateDisassocRspProcessor( tpAniSirGlobal pMac, tSirSmeDisassocRsp *pSmeDisassocRsp );
tANI_U32 roamId = 0;
eHalStatus status;
#ifdef FEATURE_WLAN_LFR_METRICS
tCsrRoamInfo *roamInfoMetrics;
#endif
if (pMac->roam.neighborRoamInfo.neighborRoamState != eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE)
{
smsLog(pMac, LOGE, FL("Roam requested when Neighbor roam is in %s state"),
macTraceGetNeighbourRoamState(
pMac->roam.neighborRoamInfo.neighborRoamState));
return;
}
if (eANI_BOOLEAN_FALSE ==
csrNeighborRoamGetHandoffAPInfo(pMac, &handoffNode))
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
FL("failed to obtain handoff AP"));
return;
}
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_DEBUG,
FL("HANDOFF CANDIDATE BSSID "MAC_ADDRESS_STR),
MAC_ADDR_ARRAY(handoffNode.pBssDescription->bssId));
vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo));
csrRoamCallCallback(pMac, pNeighborRoamInfo->csrSessionId, &roamInfo, roamId, eCSR_ROAM_FT_START,
eSIR_SME_SUCCESS);
vos_mem_zero(&roamInfo, sizeof(tCsrRoamInfo));
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING)
#ifdef FEATURE_WLAN_LFR_METRICS
/* LFR metrics - pre-auth completion metric.
Send the event to supplicant that pre-auth successfully completed */
roamInfoMetrics = vos_mem_malloc(sizeof(tCsrRoamInfo));
if (NULL == roamInfoMetrics)
{
smsLog(pMac, LOG1, FL("Memory allocation failed!"));
}
else
{
vos_mem_copy((void *)roamInfoMetrics->bssid,
(void *)&handoffNode.pBssDescription->bssId, sizeof(tCsrBssid));
csrRoamCallCallback(pMac, pNeighborRoamInfo->csrSessionId,
roamInfoMetrics, 0, eCSR_ROAM_HANDOVER_SUCCESS, 0);
vos_mem_free(roamInfoMetrics);
}
#endif
/* Free the profile.. Just to make sure we dont leak memory here */
csrReleaseProfile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile);
/* Create the Handoff AP profile. Copy the currently connected profile and update only the BSSID and channel number
This should happen before issuing disconnect */
status = csrRoamCopyConnectedProfile(pMac,
pNeighborRoamInfo->csrSessionId,
&pNeighborRoamInfo->csrNeighborRoamProfile);
if(eHAL_STATUS_SUCCESS != status)
{
VOS_TRACE (VOS_MODULE_ID_SME, VOS_TRACE_LEVEL_ERROR,
FL("csrRoamCopyConnectedProfile returned failed %d"), status);
return;
}
vos_mem_copy(pNeighborRoamInfo->csrNeighborRoamProfile.BSSIDs.bssid, handoffNode.pBssDescription->bssId, sizeof(tSirMacAddr));
pNeighborRoamInfo->csrNeighborRoamProfile.ChannelInfo.ChannelList[0] = handoffNode.pBssDescription->channelId;
NEIGHBOR_ROAM_DEBUG(pMac, LOGW, " csrRoamHandoffRequested: disassociating with current AP");
if(!HAL_STATUS_SUCCESS(csrRoamIssueDisassociateCmd(pMac, sessionId, eCSR_DISCONNECT_REASON_HANDOFF)))
{
smsLog(pMac, LOGW, "csrRoamHandoffRequested: fail to issue disassociate");
return;
}
//notify HDD for handoff, providing the BSSID too
roamInfo.reasonCode = eCsrRoamReasonBetterAP;
vos_mem_copy(roamInfo.bssid,
handoffNode.pBssDescription->bssId,
sizeof( tCsrBssid ));
csrRoamCallCallback(pMac, sessionId, &roamInfo, 0, eCSR_ROAM_ROAMING_START, eCSR_ROAM_RESULT_NONE);
return;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamIsHandoffInProgress
\brief This function returns whether handoff is in progress or not based on
the current neighbor roam state
\param pMac - The handle returned by macOpen.
is11rReassoc - Return whether reassoc is of type 802.11r reassoc
\return eANI_BOOLEAN_TRUE if reassoc in progress, eANI_BOOLEAN_FALSE otherwise
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborRoamIsHandoffInProgress(tpAniSirGlobal pMac)
{
if (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == pMac->roam.neighborRoamInfo.neighborRoamState)
return eANI_BOOLEAN_TRUE;
return eANI_BOOLEAN_FALSE;
}
#if defined(WLAN_FEATURE_VOWIFI_11R) || defined(WLAN_FEATURE_NEIGHBOR_ROAMING)
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamIs11rAssoc
\brief This function returns whether the current association is a 11r assoc or not
\param pMac - The handle returned by macOpen.
\return eANI_BOOLEAN_TRUE if current assoc is 11r, eANI_BOOLEAN_FALSE otherwise
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborRoamIs11rAssoc(tpAniSirGlobal pMac)
{
return pMac->roam.neighborRoamInfo.is11rAssoc;
}
#endif /* WLAN_FEATURE_VOWIFI_11R */
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamGetHandoffAPInfo
\brief This function returns the best possible AP for handoff. For 11R case, it
returns the 1st entry from pre-auth done list. For non-11r case, it returns
the 1st entry from roamable AP list
\param pMac - The handle returned by macOpen.
pHandoffNode - AP node that is the handoff candidate returned
\return eANI_BOOLEAN_TRUE if able find handoff AP, eANI_BOOLEAN_FALSE otherwise
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborRoamGetHandoffAPInfo(tpAniSirGlobal pMac, tpCsrNeighborRoamBSSInfo pHandoffNode)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tpCsrNeighborRoamBSSInfo pBssNode = NULL;
VOS_ASSERT(NULL != pHandoffNode);
#ifdef WLAN_FEATURE_VOWIFI_11R
if (pNeighborRoamInfo->is11rAssoc)
{
/* Always the BSS info in the head is the handoff candidate */
pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL);
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList));
}
else
#endif
#ifdef FEATURE_WLAN_ESE
if (pNeighborRoamInfo->isESEAssoc)
{
/* Always the BSS info in the head is the handoff candidate */
pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL);
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList));
}
else
#endif
#ifdef FEATURE_WLAN_LFR
if (csrRoamIsFastRoamEnabled(pMac, CSR_SESSION_ID_INVALID))
{
/* Always the BSS info in the head is the handoff candidate */
pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->FTRoamInfo.preAuthDoneList, NULL);
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList));
}
else
#endif
{
pBssNode = csrNeighborRoamGetRoamableAPListNextEntry(pMac, &pNeighborRoamInfo->roamableAPList, NULL);
NEIGHBOR_ROAM_DEBUG(pMac, LOG1, FL("Number of Handoff candidates = %d"), csrLLCount(&pNeighborRoamInfo->roamableAPList));
}
if (NULL == pBssNode)
{
return eANI_BOOLEAN_FALSE;
}
vos_mem_copy(pHandoffNode, pBssNode, sizeof(tCsrNeighborRoamBSSInfo));
return eANI_BOOLEAN_TRUE;
}
/* ---------------------------------------------------------------------------
\brief This function returns TRUE if preauth is completed
\param pMac - The handle returned by macOpen.
\return boolean
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborRoamStatePreauthDone(tpAniSirGlobal pMac)
{
return (pMac->roam.neighborRoamInfo.neighborRoamState ==
eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE);
}
/* ---------------------------------------------------------------------------
\brief In the event that we are associated with AP1 and we have
completed pre auth with AP2. Then we receive a deauth/disassoc from
AP1.
At this point neighbor roam is in pre auth done state, pre auth timer
is running. We now handle this case by stopping timer and clearing
the pre-auth state. We basically clear up and just go to disconnected
state.
\param pMac - The handle returned by macOpen.
\return boolean
---------------------------------------------------------------------------*/
void csrNeighborRoamTranistionPreauthDoneToDisconnected(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
if (pMac->roam.neighborRoamInfo.neighborRoamState !=
eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) return;
// Stop timer
vos_timer_stop(&pMac->ft.ftSmeContext.preAuthReassocIntvlTimer);
// Transition to init state
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(eCSR_NEIGHBOR_ROAM_STATE_INIT)
pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = eANI_BOOLEAN_FALSE;
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
pNeighborRoamInfo->uOsRequestedHandoff = 0;
#endif
}
/* ---------------------------------------------------------------------------
\brief This function returns TRUE if background scan triggered by
LFR is in progress.
\param halHandle - The handle from HDD context.
\return boolean
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborRoamScanRspPending (tHalHandle hHal)
{
tpAniSirGlobal pMac = PMAC_STRUCT(hHal);
return (pMac->roam.neighborRoamInfo.scanRspPending);
}
/* ---------------------------------------------------------------------------
\brief This function returns TRUE if STA is in the middle of roaming states
\param halHandle - The handle from HDD context.
\return boolean
---------------------------------------------------------------------------*/
tANI_BOOLEAN csrNeighborMiddleOfRoaming (tHalHandle hHal)
{
tpAniSirGlobal pMac = PMAC_STRUCT(hHal);
tANI_BOOLEAN val = (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == pMac->roam.neighborRoamInfo.neighborRoamState) ||
(eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING == pMac->roam.neighborRoamInfo.neighborRoamState) ||
(eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE == pMac->roam.neighborRoamInfo.neighborRoamState) ||
(eCSR_NEIGHBOR_ROAM_STATE_REPORT_SCAN == pMac->roam.neighborRoamInfo.neighborRoamState) ||
(eCSR_NEIGHBOR_ROAM_STATE_CFG_CHAN_LIST_SCAN == pMac->roam.neighborRoamInfo.neighborRoamState)
#ifdef WLAN_FEATURE_LFR_MBB
|| (eCSR_NEIGHBOR_ROAM_STATE_MBB_PREAUTH_REASSOC ==
pMac->roam.neighborRoamInfo.neighborRoamState);
#else
;
#endif
return (val);
}
void csrRemoveNeighbourRoamPreauthCommand(tpAniSirGlobal pMac)
{
tListElem *entry;
tSmeCmd *command;
entry = csrLLPeekHead(&pMac->sme.smeCmdPendingList, LL_ACCESS_LOCK);
while (entry)
{
command = GET_BASE_ADDR(entry, tSmeCmd, Link);
if ((eSmeCommandRoam == command->command) &&
(eCsrPerformPreauth == command->u.roamCmd.roamReason))
{
if (csrLLRemoveEntry(&pMac->sme.smeCmdPendingList, entry,
LL_ACCESS_LOCK)) {
csrReleaseCommandPreauth(pMac, command);
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(
eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
break;
}
}
entry = csrLLNext(&pMac->sme.smeCmdPendingList, entry, LL_ACCESS_LOCK);
}
entry = csrLLPeekHead(&pMac->roam.roamCmdPendingList, LL_ACCESS_LOCK);
while (entry)
{
command = GET_BASE_ADDR(entry, tSmeCmd, Link);
if ((eSmeCommandRoam == command->command) &&
(eCsrPerformPreauth == command->u.roamCmd.roamReason))
{
if (csrLLRemoveEntry(&pMac->roam.roamCmdPendingList, entry,
LL_ACCESS_LOCK)) {
csrReleaseCommandPreauth(pMac, command);
CSR_NEIGHBOR_ROAM_STATE_TRANSITION(
eCSR_NEIGHBOR_ROAM_STATE_CONNECTED);
break;
}
}
entry = csrLLNext(&pMac->roam.roamCmdPendingList, entry,
LL_ACCESS_LOCK);
}
}
#ifdef WLAN_FEATURE_ROAM_SCAN_OFFLOAD
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamCandidateFoundIndHdlr
\brief This function is called by CSR as soon as TL posts the candidate
found indication to SME via MC thread
\param pMac - The handle returned by macOpen.
pMsg - Msg sent by PE
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamCandidateFoundIndHdlr(tpAniSirGlobal pMac, void* pMsg)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
tCsrRoamSession *pSession = CSR_GET_SESSION(pMac,
pNeighborRoamInfo->csrSessionId);
if(!pSession)
{
smsLog(pMac, LOGE, FL("session %d not found "),
pNeighborRoamInfo->csrSessionId);
return eHAL_STATUS_FAILURE;
}
if (vos_check_monitor_state())
{
smsLog(pMac, LOGW, FL("Ignore raom candidate when roam started"));
return eHAL_STATUS_FAILURE;
}
/* we must be in connected state, if not ignore it */
if ((eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState)
|| (pNeighborRoamInfo->uOsRequestedHandoff))
{
smsLog(pMac, LOGE, FL("Received in not CONNECTED state OR uOsRequestedHandoff is set. Ignore it"));
status = eHAL_STATUS_FAILURE;
}
else
{
/* We are about to start a fresh scan cycle,
* purge connected SSID results from the past */
csrScanFlushSelectiveSsid(pMac, pSession->connectedProfile.SSID.ssId,
pSession->connectedProfile.SSID.length);
/* Once it gets the candidates found indication from PE, will issue a scan
- req to PE with “freshScan” in scanreq structure set as follows:
0x42 - Return & purge LFR scan results
*/
status = csrScanRequestLfrResult(pMac, pNeighborRoamInfo->csrSessionId,
csrNeighborRoamScanResultRequestCallback, pMac);
}
return status;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamProcessHandoffReq
\brief This function is called start with the handoff process. First do a
SSID scan for the BSSID provided
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamProcessHandoffReq(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
tANI_U32 roamId;
tCsrRoamProfile *pProfile = NULL;
tCsrRoamSession *pSession = CSR_GET_SESSION( pMac, pNeighborRoamInfo->csrSessionId );
tANI_U8 i = 0;
uint8_t roam_now = 0;
uint8_t roamable_ap_count = 0;
tCsrScanResultFilter scan_filter;
tScanResultHandle scan_result;
if (NULL == pSession)
{
smsLog(pMac, LOGE, FL("pSession is NULL "));
return eHAL_STATUS_FAILURE;
}
do
{
roamId = GET_NEXT_ROAM_ID(&pMac->roam);
pProfile = vos_mem_malloc(sizeof(tCsrRoamProfile));
if ( NULL == pProfile )
{
smsLog(pMac, LOGE, FL("Memory alloc failed"));
return eHAL_STATUS_FAILURE;
}
vos_mem_set(pProfile, sizeof(tCsrRoamProfile), 0);
status = csrRoamCopyProfile(pMac, pProfile, pSession->pCurRoamProfile);
if(!HAL_STATUS_SUCCESS(status))
{
smsLog(pMac, LOGE, FL("Profile copy failed"));
break;
}
//Add the BSSID & Channel
pProfile->BSSIDs.numOfBSSIDs = 1;
pProfile->BSSIDs.bssid = vos_mem_malloc(sizeof(tSirMacAddr) * pProfile->BSSIDs.numOfBSSIDs);
if (NULL == pProfile->BSSIDs.bssid)
{
smsLog(pMac, LOGE, FL("mem alloc failed for BSSID"));
status = eHAL_STATUS_FAILURE;
break;
}
vos_mem_zero(pProfile->BSSIDs.bssid, sizeof(tSirMacAddr) * pProfile->BSSIDs.numOfBSSIDs);
/* Populate the BSSID from handoff info received from HDD */
for (i = 0; i < pProfile->BSSIDs.numOfBSSIDs; i++)
{
vos_mem_copy(&pProfile->BSSIDs.bssid[i],
pNeighborRoamInfo->handoffReqInfo.bssid, sizeof(tSirMacAddr));
}
pProfile->ChannelInfo.numOfChannels = 1;
pProfile->ChannelInfo.ChannelList =
vos_mem_malloc(sizeof(*pProfile->ChannelInfo.ChannelList) *
pProfile->ChannelInfo.numOfChannels);
if (NULL == pProfile->ChannelInfo.ChannelList)
{
smsLog(pMac, LOGE, FL("mem alloc failed for ChannelList"));
status = eHAL_STATUS_FAILURE;
break;
}
pProfile->ChannelInfo.ChannelList[0] = pNeighborRoamInfo->handoffReqInfo.channel;
/*
* For User space connect requests, the scan has already been done.
* So, check if the BSS descriptor exists in the scan cache and
* proceed with the handoff instead of a redundant scan again.
*/
if (pNeighborRoamInfo->handoffReqInfo.src == CONNECT_CMD_USERSPACE) {
smsLog(pMac, LOG1, FL("Connect cmd with bssid within same ESS"));
status = csrNeighborRoamPrepareScanProfileFilter(
pMac, &scan_filter);
smsLog(pMac, LOG1, FL("Filter creation status = %d"), status);
status = csrScanGetResult(pMac, &scan_filter, &scan_result);
roam_now = csrNeighborRoamProcessScanResults(pMac, &scan_result);
roamable_ap_count = csrLLCount(&pNeighborRoamInfo->roamableAPList);
csrFreeScanFilter(pMac, &scan_filter);
smsLog(pMac, LOG1, FL("roam_now=%d, roamable_ap_count=%d"),
roam_now, roamable_ap_count);
}
if (roam_now && roamable_ap_count) {
csrNeighborRoamTriggerHandoff(pMac, pNeighborRoamInfo);
} else {
status = csrScanForSSID(pMac, pSession->sessionId,
pProfile, roamId, FALSE);
if(!HAL_STATUS_SUCCESS(status))
smsLog(pMac, LOGE, FL("SSID scan failed"));
}
}while(0);
if(NULL != pProfile)
{
csrReleaseProfile(pMac, pProfile);
vos_mem_free(pProfile);
}
return status;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamSssidScanDone
\brief This function is called once SSID scan is done. If SSID scan failed
to find our candidate add an entry to csr scan cache ourself before starting
the handoff process
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamSssidScanDone(tpAniSirGlobal pMac, eHalStatus status)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus hstatus;
smsLog(pMac, LOGE, FL("called "));
/* we must be in connected state, if not ignore it */
if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState)
{
smsLog(pMac, LOGE, FL("Received in not CONNECTED state. Ignore it"));
return eHAL_STATUS_FAILURE;
}
//if SSID scan failed to find our candidate add an entry to csr scan cache ourself
if(!HAL_STATUS_SUCCESS(status))
{
smsLog(pMac, LOGE, FL("Add an entry to csr scan cache"));
hstatus = csrScanCreateEntryInScanCache(pMac, pNeighborRoamInfo->csrSessionId,
pNeighborRoamInfo->handoffReqInfo.bssid,
pNeighborRoamInfo->handoffReqInfo.channel);
if (eHAL_STATUS_SUCCESS != hstatus)
{
smsLog(pMac, LOGE, FL("csrScanCreateEntryInScanCache failed with status %d"), hstatus);
return eHAL_STATUS_FAILURE;
}
}
/* Now we have completed scanning for the candidate provided by HDD. Let move on to HO*/
hstatus = csrNeighborRoamProcessScanComplete(pMac);
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;
}
/**
* csr_neighbor_roam_handler_assign_handoff_src() - Assign source of
* roam handoff
* @pNeighborRoamInfo: Pointer to csr neighbor roam control info
* @pHandoffReqInfo: Pointer to the Handoff request
*
* Return: None
*/
#ifndef QCA_WIFI_ISOC
static inline void csr_neighbor_roam_handler_assign_handoff_src(
tpCsrNeighborRoamControlInfo pNeighborRoamInfo,
tAniHandoffReq *pHandoffReqInfo)
{
pNeighborRoamInfo->handoffReqInfo.src
= pHandoffReqInfo->handoff_src;
}
#else
static inline void csr_neighbor_roam_handler_assign_handoff_src(
tpCsrNeighborRoamControlInfo pNeighborRoamInfo,
tAniHandoffReq *pHandoffReqInfo)
{
}
#endif
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamHandoffReqHdlr
\brief This function is called by CSR as soon as it gets a handoff request
to SME via MC thread
\param pMac - The handle returned by macOpen.
pMsg - Msg sent by HDD
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamHandoffReqHdlr(tpAniSirGlobal pMac, void* pMsg)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
tAniHandoffReq *pHandoffReqInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
/* we must be in connected state, if not ignore it */
if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState)
{
smsLog(pMac, LOGE, FL("Received in not CONNECTED state. Ignore it"));
status = eHAL_STATUS_FAILURE;
}
else
{
//save the handoff info came from HDD as part of the reassoc req
pHandoffReqInfo = (tAniHandoffReq *)pMsg;
if (NULL != pHandoffReqInfo)
{
//sanity check
if (VOS_FALSE == vos_mem_compare(pHandoffReqInfo->bssid,
pNeighborRoamInfo->currAPbssid,
sizeof(tSirMacAddr)))
{
pNeighborRoamInfo->handoffReqInfo.channel = pHandoffReqInfo->channel;
csr_neighbor_roam_handler_assign_handoff_src(pNeighborRoamInfo,
pHandoffReqInfo);
vos_mem_copy(pNeighborRoamInfo->handoffReqInfo.bssid,
pHandoffReqInfo->bssid,
6);
pNeighborRoamInfo->uOsRequestedHandoff = 1;
if (pNeighborRoamInfo->lastSentCmd != ROAM_SCAN_OFFLOAD_STOP)
{
status = csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_STOP,
REASON_OS_REQUESTED_ROAMING_NOW);
if (eHAL_STATUS_SUCCESS != status)
{
smsLog(pMac, LOGE, FL("csrRoamOffloadScan failed"));
pNeighborRoamInfo->uOsRequestedHandoff = 0;
}
}
else
csrNeighborRoamProceedWithHandoffReq(pMac);
}
else
{
smsLog(pMac, LOGE, FL("Received req has same BSSID as current AP!!"));
status = eHAL_STATUS_FAILURE;
}
}
else
{
smsLog(pMac, LOGE, FL("Received msg is NULL"));
status = eHAL_STATUS_FAILURE;
}
}
return status;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamProceedWithHandoffReq
\brief This function is called by CSR as soon as it gets rsp back for
ROAM_SCAN_OFFLOAD_STOP with reason REASON_OS_REQUESTED_ROAMING_NOW
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamProceedWithHandoffReq(tpAniSirGlobal pMac)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
eHalStatus status = eHAL_STATUS_SUCCESS;
/* we must be in connected state, if not ignore it */
if ((eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != pNeighborRoamInfo->neighborRoamState)
|| (!pNeighborRoamInfo->uOsRequestedHandoff))
{
smsLog(pMac, LOGE, FL("Received in not CONNECTED state or uOsRequestedHandoff is not set. Ignore it"));
status = eHAL_STATUS_FAILURE;
}
else
{
//Let's go ahead with handoff
status = csrNeighborRoamProcessHandoffReq(pMac);
}
if(!HAL_STATUS_SUCCESS(status))
{
pNeighborRoamInfo->uOsRequestedHandoff = 0;
}
return status;
}
/* ---------------------------------------------------------------------------
\fn csrNeighborRoamStartLfrScan
\brief This function is called if HDD requested handoff failed for some
reason. start the LFR logic at that point.By the time, this function is
called, a STOP command has already been issued.
\param pMac - The handle returned by macOpen.
\return eHAL_STATUS_SUCCESS on success, corresponding error code otherwise
---------------------------------------------------------------------------*/
eHalStatus csrNeighborRoamStartLfrScan(tpAniSirGlobal pMac, tANI_U8 OffloadCmdStopReason)
{
tpCsrNeighborRoamControlInfo pNeighborRoamInfo = &pMac->roam.neighborRoamInfo;
smsLog(pMac, LOGE,
FL(" uOsRequestedHandoff=%d isForcedInitialRoamTo5GH=%d OffloadCmdStopReason = %d"),
pNeighborRoamInfo->uOsRequestedHandoff,
pNeighborRoamInfo->isForcedInitialRoamTo5GH,
OffloadCmdStopReason);
if(OffloadCmdStopReason == REASON_OS_REQUESTED_ROAMING_NOW)
pNeighborRoamInfo->uOsRequestedHandoff = 0;
if(OffloadCmdStopReason == REASON_INITIAL_FORCED_ROAM_TO_5G)
pNeighborRoamInfo->isForcedInitialRoamTo5GH = 0;
/* There is no candidate or We are not roaming Now.
* Inform the FW to restart Roam Offload Scan */
csrRoamOffloadScan(pMac, ROAM_SCAN_OFFLOAD_START, REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW);
return eHAL_STATUS_SUCCESS;
}
#endif //WLAN_FEATURE_ROAM_SCAN_OFFLOAD
#endif /* WLAN_FEATURE_NEIGHBOR_ROAMING */