/******************************************************************************
 *
 * This file is provided under a dual license.  When you use or
 * distribute this software, you may choose to be licensed under
 * version 2 of the GNU General Public License ("GPLv2 License")
 * or BSD License.
 *
 * GPLv2 License
 *
 * Copyright(C) 2016 MediaTek Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See http://www.gnu.org/licenses/gpl-2.0.html for more details.
 *
 * BSD LICENSE
 *
 * Copyright(C) 2016 MediaTek Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include "precomp.h"

VOID
p2pRoleStateInit_IDLE(IN P_ADAPTER_T prAdapter, IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN P_BSS_INFO_T prP2pBssInfo)
{

	cnmTimerStartTimer(prAdapter, &(prP2pRoleFsmInfo->rP2pRoleFsmTimeoutTimer), P2P_AP_CHNL_HOLD_TIME_MS);
}				/* p2pRoleStateInit_IDLE */

VOID
p2pRoleStateAbort_IDLE(IN P_ADAPTER_T prAdapter,
		       IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN P_P2P_CHNL_REQ_INFO_T prP2pChnlReqInfo)
{

	/* AP mode channel hold time. */
	if (prP2pChnlReqInfo->fgIsChannelRequested)
		p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex, prP2pChnlReqInfo);

	cnmTimerStopTimer(prAdapter, &(prP2pRoleFsmInfo->rP2pRoleFsmTimeoutTimer));
}				/* p2pRoleStateAbort_IDLE */

VOID p2pRoleStateInit_SCAN(IN P_ADAPTER_T prAdapter, IN UINT_8 ucBssIndex, IN P_P2P_SCAN_REQ_INFO_T prScanReqInfo)
{
	P_P2P_DEV_FSM_INFO_T prP2pDevFsmInfo = (P_P2P_DEV_FSM_INFO_T) NULL;
	P_P2P_SCAN_REQ_INFO_T prDevScanReqInfo = NULL;

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prScanReqInfo != NULL));

		prScanReqInfo->fgIsScanRequest = TRUE;
		if (prScanReqInfo->u4BufLength == 0) {
			/* If we let u4BufLength be zero, scan module will copy the IE buf from ScanParam */
			/* Sometime this content is from AIS, so we need copy it from P2Pdev */
			prP2pDevFsmInfo = prAdapter->rWifiVar.prP2pDevFsmInfo;
			if (prP2pDevFsmInfo) {
				prDevScanReqInfo = &(prP2pDevFsmInfo->rScanReqInfo);
				if (prDevScanReqInfo->u4BufLength != 0) {
					/* IE Buffer */
					kalMemCopy(prScanReqInfo->aucIEBuf, prDevScanReqInfo->aucIEBuf,
							prDevScanReqInfo->u4BufLength);
					prScanReqInfo->u4BufLength = prDevScanReqInfo->u4BufLength;
					DBGLOG(P2P, TRACE, "p2pRoleStateInit_SCAN Copy p2p IE from P2P dev\n");
				}
			} else
				DBGLOG(P2P, ERROR, "No prP2pDevFsmInfo ptr\n");
		}
		p2pFuncRequestScan(prAdapter, ucBssIndex, prScanReqInfo);
	} while (FALSE);
}				/* p2pRoleStateInit_SCAN */

VOID p2pRoleStateAbort_SCAN(IN P_ADAPTER_T prAdapter, IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo)
{
	P_P2P_SCAN_REQ_INFO_T prScanInfo = (P_P2P_SCAN_REQ_INFO_T) NULL;

	do {
		prScanInfo = &prP2pRoleFsmInfo->rScanReqInfo;

		p2pFuncCancelScan(prAdapter, prP2pRoleFsmInfo->ucBssIndex, prScanInfo);

		/* TODO: May need indicate port index to upper layer. */
		kalP2PIndicateScanDone(prAdapter->prGlueInfo, prP2pRoleFsmInfo->ucRoleIndex, prScanInfo->fgIsAbort);
	} while (FALSE);
}				/* p2pRoleStateAbort_SCAN */

VOID
p2pRoleStateInit_REQING_CHANNEL(IN P_ADAPTER_T prAdapter, IN UINT_8 ucBssIdx, IN P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prChnlReqInfo != NULL));

		p2pFuncAcquireCh(prAdapter, ucBssIdx, prChnlReqInfo);

	} while (FALSE);
}				/* p2pRoleStateInit_REQING_CHANNEL */

VOID
p2pRoleStateAbort_REQING_CHANNEL(IN P_ADAPTER_T prAdapter,
				 IN P_BSS_INFO_T prP2pRoleBssInfo,
				 IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN ENUM_P2P_ROLE_STATE_T eNextState)
{

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prP2pRoleBssInfo != NULL) && (prP2pRoleFsmInfo != NULL));

		if (eNextState == P2P_ROLE_STATE_IDLE) {
			if (prP2pRoleBssInfo->eIntendOPMode == OP_MODE_ACCESS_POINT) {
				P_P2P_CHNL_REQ_INFO_T prP2pChnlReqInfo = &(prP2pRoleFsmInfo->rChnlReqInfo);

				if (IS_NET_PWR_STATE_ACTIVE(prAdapter, prP2pRoleFsmInfo->ucBssIndex))
					p2pFuncStartGO(prAdapter,
						   prP2pRoleBssInfo,
						   &(prP2pRoleFsmInfo->rConnReqInfo),
						   &(prP2pRoleFsmInfo->rChnlReqInfo));
				else if (prP2pChnlReqInfo->fgIsChannelRequested)
					p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex, prP2pChnlReqInfo);
			} else {
				p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex,
						 &(prP2pRoleFsmInfo->rChnlReqInfo));
			}
		}
	} while (FALSE);
}				/* p2pRoleStateAbort_REQING_CHANNEL */

VOID
p2pRoleStateInit_AP_CHNL_DETECTION(IN P_ADAPTER_T prAdapter,
				   IN UINT_8 ucBssIndex,
				   IN P_P2P_SCAN_REQ_INFO_T prScanReqInfo, IN P_P2P_CONNECTION_REQ_INFO_T prConnReqInfo)
{
	P_P2P_SPECIFIC_BSS_INFO_T prP2pSpecificBssInfo = (P_P2P_SPECIFIC_BSS_INFO_T) NULL;
	P_BSS_INFO_T prBssInfo = NULL;
	UINT_8 ucPreferedChnl = 0;
	ENUM_BAND_T eBand = BAND_NULL;
	ENUM_CHNL_EXT_T eSco = CHNL_EXT_SCN;

	do {
		prBssInfo = GET_BSS_INFO_BY_INDEX(prAdapter, ucBssIndex);
		ASSERT_BREAK((prAdapter != NULL) && (prScanReqInfo != NULL)
			     && (prConnReqInfo != NULL) && (prBssInfo != NULL));

		prP2pSpecificBssInfo = prAdapter->rWifiVar.prP2pSpecificBssInfo[prBssInfo->u4PrivateData];

		if ((cnmPreferredChannel(prAdapter,
					 &eBand,
					 &ucPreferedChnl,
					 &eSco) == FALSE) && (prConnReqInfo->rChannelInfo.ucChannelNum == 0)) {
			/* Sparse channel detection. */
			prP2pSpecificBssInfo->ucPreferredChannel = 0;

			prScanReqInfo->eScanType = SCAN_TYPE_PASSIVE_SCAN;
			prScanReqInfo->u2PassiveDewellTime = 50;	/* 50ms for passive channel load detection */
		} else {
			/* Active scan to shorten scan time. */
			prScanReqInfo->eScanType = SCAN_TYPE_ACTIVE_SCAN;
			prScanReqInfo->u2PassiveDewellTime = 0;

			if (prConnReqInfo->rChannelInfo.ucChannelNum != 0) {
				prP2pSpecificBssInfo->ucPreferredChannel = prConnReqInfo->rChannelInfo.ucChannelNum;
				prP2pSpecificBssInfo->eRfBand = prConnReqInfo->rChannelInfo.eBand;
				prP2pSpecificBssInfo->eRfSco = CHNL_EXT_SCN;
			} else {
				prP2pSpecificBssInfo->ucPreferredChannel = ucPreferedChnl;
				prP2pSpecificBssInfo->eRfBand = eBand;
				prP2pSpecificBssInfo->eRfSco = eSco;
			}

		}

		/* TODO: See if channel set to include 5G or only 2.4G */
		prScanReqInfo->eChannelSet = SCAN_CHANNEL_2G4;

		prScanReqInfo->fgIsAbort = TRUE;
		prScanReqInfo->fgIsScanRequest = TRUE;
		prScanReqInfo->ucNumChannelList = 0;
		prScanReqInfo->u4BufLength = 0;
		prScanReqInfo->ucSsidNum = 1;
		prScanReqInfo->arSsidStruct[0].ucSsidLen = 0;

		p2pFuncRequestScan(prAdapter, ucBssIndex, prScanReqInfo);

	} while (FALSE);

	return;

}				/* p2pRoleStateInit_AP_CHNL_DETECTION */

VOID
p2pRoleStateAbort_AP_CHNL_DETECTION(IN P_ADAPTER_T prAdapter,
				    IN UINT_8 ucBssIndex,
				    IN P_P2P_CONNECTION_REQ_INFO_T prP2pConnReqInfo,
				    IN P_P2P_CHNL_REQ_INFO_T prChnlReqInfo,
				    IN P_P2P_SCAN_REQ_INFO_T prP2pScanReqInfo, IN ENUM_P2P_ROLE_STATE_T eNextState)
{
	P_P2P_SPECIFIC_BSS_INFO_T prP2pSpecificBssInfo = (P_P2P_SPECIFIC_BSS_INFO_T) NULL;
	P_BSS_INFO_T prBssInfo = NULL;

	do {
		if (eNextState == P2P_ROLE_STATE_REQING_CHANNEL) {
			prBssInfo = GET_BSS_INFO_BY_INDEX(prAdapter, ucBssIndex);
			prP2pSpecificBssInfo = prAdapter->rWifiVar.prP2pSpecificBssInfo[prBssInfo->u4PrivateData];

			if (prP2pSpecificBssInfo->ucPreferredChannel == 0) {
				if (scnQuerySparseChannel(prAdapter,
							  &prP2pSpecificBssInfo->eRfBand,
							  &prP2pSpecificBssInfo->ucPreferredChannel)) {
					prP2pSpecificBssInfo->eRfSco = CHNL_EXT_SCN;
				} else {
					DBGLOG(P2P, ERROR, "Sparse Channel Error, use default settings\n");
					/* Sparse channel false. */
					prP2pSpecificBssInfo->ucPreferredChannel = P2P_DEFAULT_LISTEN_CHANNEL;
					prP2pSpecificBssInfo->eRfBand = BAND_2G4;
					prP2pSpecificBssInfo->eRfSco = CHNL_EXT_SCN;
				}
			}

			prChnlReqInfo->u8Cookie = 0;
			prChnlReqInfo->ucReqChnlNum = prP2pSpecificBssInfo->ucPreferredChannel;
			prChnlReqInfo->eBand = prP2pSpecificBssInfo->eRfBand;
			prChnlReqInfo->eChnlSco = prP2pSpecificBssInfo->eRfSco;
			prChnlReqInfo->u4MaxInterval = P2P_AP_CHNL_HOLD_TIME_MS;
			prChnlReqInfo->eChnlReqType = CH_REQ_TYPE_GO_START_BSS;

			prChnlReqInfo->eChannelWidth = CW_20_40MHZ;
			prChnlReqInfo->ucCenterFreqS1 = 0;
			prChnlReqInfo->ucCenterFreqS2 = 0;

		} else {
			p2pFuncCancelScan(prAdapter, ucBssIndex, prP2pScanReqInfo);
		}
	} while (FALSE);
}

VOID
p2pRoleStateInit_GC_JOIN(IN P_ADAPTER_T prAdapter,
			 IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{
	/* P_MSG_JOIN_REQ_T prJoinReqMsg = (P_MSG_JOIN_REQ_T)NULL; */
	P_BSS_INFO_T prP2pBssInfo = (P_BSS_INFO_T) NULL;

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prP2pRoleFsmInfo != NULL) && (prChnlReqInfo != NULL));

		prP2pBssInfo = GET_BSS_INFO_BY_INDEX(prAdapter, prP2pRoleFsmInfo->ucBssIndex);

		/* Setup a join timer. */
		DBGLOG(P2P, TRACE, "Start a join init timer\n");
		cnmTimerStartTimer(prAdapter,
				   &(prP2pRoleFsmInfo->rP2pRoleFsmTimeoutTimer),
				   (prChnlReqInfo->u4MaxInterval - AIS_JOIN_CH_GRANT_THRESHOLD));

		p2pFuncGCJoin(prAdapter, prP2pBssInfo, &(prP2pRoleFsmInfo->rJoinInfo));

	} while (FALSE);
}				/* p2pRoleStateInit_GC_JOIN */

VOID
p2pRoleStateAbort_GC_JOIN(IN P_ADAPTER_T prAdapter,
			  IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo,
			  IN P_P2P_JOIN_INFO_T prJoinInfo, IN ENUM_P2P_ROLE_STATE_T eNextState)
{
	do {

		if (prJoinInfo->fgIsJoinComplete == FALSE) {
			P_MSG_JOIN_ABORT_T prJoinAbortMsg = (P_MSG_JOIN_ABORT_T) NULL;

			prJoinAbortMsg =
			    (P_MSG_JOIN_ABORT_T) cnmMemAlloc(prAdapter, RAM_TYPE_MSG, sizeof(MSG_JOIN_ABORT_T));
			if (!prJoinAbortMsg) {
				DBGLOG(P2P, TRACE, "Fail to allocate join abort message buffer\n");
				ASSERT(FALSE);
				return;
			}

			prJoinAbortMsg->rMsgHdr.eMsgId = MID_P2P_SAA_FSM_ABORT;
			prJoinAbortMsg->ucSeqNum = prJoinInfo->ucSeqNumOfReqMsg;
			prJoinAbortMsg->prStaRec = prJoinInfo->prTargetStaRec;

			mboxSendMsg(prAdapter, MBOX_ID_0, (P_MSG_HDR_T) prJoinAbortMsg, MSG_SEND_METHOD_BUF);

		}

		/* Stop Join Timer. */
		cnmTimerStopTimer(prAdapter, &(prP2pRoleFsmInfo->rP2pRoleFsmTimeoutTimer));

		/* Release channel requested. */
		p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex, &(prP2pRoleFsmInfo->rChnlReqInfo));
	} while (FALSE);
}

#if (CFG_SUPPORT_DFS_MASTER == 1)
VOID
p2pRoleStateInit_DFS_CAC(IN P_ADAPTER_T prAdapter, IN UINT_8 ucBssIdx, IN P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prChnlReqInfo != NULL));

		p2pFuncAcquireCh(prAdapter, ucBssIdx, prChnlReqInfo);
	} while (FALSE);
}				/* p2pRoleStateInit_DFS_CAC */

VOID
p2pRoleStateAbort_DFS_CAC(IN P_ADAPTER_T prAdapter,
				 IN P_BSS_INFO_T prP2pRoleBssInfo,
				 IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN ENUM_P2P_ROLE_STATE_T eNextState)
{
	do {
		cnmTimerStopTimer(prAdapter, &(prP2pRoleFsmInfo->rP2pRoleFsmTimeoutTimer));

		p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex,
					&(prP2pRoleFsmInfo->rChnlReqInfo));
	} while (FALSE);
}				/* p2pRoleStateAbort_DFS_CAC */

VOID
p2pRoleStateInit_SWITCH_CHANNEL(IN P_ADAPTER_T prAdapter, IN UINT_8 ucBssIdx, IN P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{

	do {
		ASSERT_BREAK((prAdapter != NULL) && (prChnlReqInfo != NULL));

		p2pFuncAcquireCh(prAdapter, ucBssIdx, prChnlReqInfo);
	} while (FALSE);
}				/* p2pRoleStateInit_SWITCH_CHANNEL */

VOID
p2pRoleStateAbort_SWITCH_CHANNEL(IN P_ADAPTER_T prAdapter,
				 IN P_BSS_INFO_T prP2pRoleBssInfo,
				 IN P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo, IN ENUM_P2P_ROLE_STATE_T eNextState)
{
	do {
		p2pFuncReleaseCh(prAdapter, prP2pRoleFsmInfo->ucBssIndex,
					&(prP2pRoleFsmInfo->rChnlReqInfo));
	} while (FALSE);
}				/* p2pRoleStateAbort_SWITCH_CHANNEL */
#endif

VOID
p2pRoleStatePrepare_To_REQING_CHANNEL_STATE(IN P_ADAPTER_T prAdapter,
					    IN P_BSS_INFO_T prBssInfo,
					    IN P_P2P_CONNECTION_REQ_INFO_T prConnReqInfo,
					    OUT P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{
	ENUM_BAND_T eBandBackup;
	UINT_8 ucChannelBackup;
	ENUM_CHNL_EXT_T eSCOBackup;

	do {
		/* P2P BSS info is for temporarily use
		 * Request a 80MHz channel before starting AP/GO
		 * to prevent from STA/GC connected too early (before CH abort)
		 * Therefore, STA/GC Rate will drop during DHCP exchange packets
		 */

		/* Previous issue:
		 * Always request 20MHz channel, but carry 40MHz HT cap/80MHz VHT cap,
		 * then if GC/STA connected before CH abort,
		 * GO/AP cannot listen to GC/STA's 40MHz/80MHz packets.
		 */

		eBandBackup = prBssInfo->eBand;
		ucChannelBackup = prBssInfo->ucPrimaryChannel;
		eSCOBackup = prBssInfo->eBssSCO;

		prBssInfo->ucPrimaryChannel = prConnReqInfo->rChannelInfo.ucChannelNum;
		prBssInfo->eBand = prConnReqInfo->rChannelInfo.eBand;

		prBssInfo->eBssSCO = rlmGetScoForAP(prAdapter, prBssInfo);

		ASSERT_BREAK((prAdapter != NULL) && (prConnReqInfo != NULL) && (prChnlReqInfo != NULL));
		prChnlReqInfo->u8Cookie = 0;
		prChnlReqInfo->ucReqChnlNum = prConnReqInfo->rChannelInfo.ucChannelNum;
		prChnlReqInfo->eBand = prConnReqInfo->rChannelInfo.eBand;
		prChnlReqInfo->eChnlSco = prBssInfo->eBssSCO;
		prChnlReqInfo->u4MaxInterval = P2P_AP_CHNL_HOLD_TIME_MS;
		prChnlReqInfo->eChnlReqType = CH_REQ_TYPE_GO_START_BSS;


		/*rlmBssInitForAP would decide the real AP bandwidth*/
		prBssInfo->ucVhtChannelWidth =
			cnmGetBssMaxBwToChnlBW(prAdapter, prBssInfo->ucBssIndex);
		prChnlReqInfo->eChannelWidth = prBssInfo->ucVhtChannelWidth;
		if (prChnlReqInfo->eChannelWidth == VHT_OP_CHANNEL_WIDTH_80P80) {
			/* TODO: BW80+80 support */
			DBGLOG(RLM, WARN, "BW80+80 not support. Fallback  to VHT_OP_CHANNEL_WIDTH_20_40\n");
			prChnlReqInfo->eChannelWidth = VHT_OP_CHANNEL_WIDTH_20_40;
			prChnlReqInfo->ucCenterFreqS1 = 0;
			prChnlReqInfo->ucCenterFreqS2 = 0;
		} else {
			prChnlReqInfo->ucCenterFreqS1 =
			rlmGetVhtS1ForAP(prAdapter, prBssInfo);
			prChnlReqInfo->ucCenterFreqS2 = 0;
		}

		/* If the S1 is invalid, force to change bandwidth */
		if ((prBssInfo->eBand == BAND_5G) &&
			(prChnlReqInfo->ucCenterFreqS1 == 0))
			prChnlReqInfo->eChannelWidth = VHT_OP_CHANNEL_WIDTH_20_40;

		DBGLOG(P2P, TRACE, "p2pRoleStatePrepare_To_REQING_CHANNEL_STATE\n");

		/* Reset */
		prBssInfo->ucPrimaryChannel = ucChannelBackup;
		prBssInfo->eBand = eBandBackup;
		prBssInfo->eBssSCO = eSCOBackup;
	} while (FALSE);
}

#if (CFG_SUPPORT_DFS_MASTER == 1)
VOID
p2pRoleStatePrepare_To_DFS_CAC_STATE(IN P_ADAPTER_T prAdapter,
					IN P_BSS_INFO_T prBssInfo,
					IN ENUM_CHANNEL_WIDTH_T rChannelWidth,
					IN P_P2P_CONNECTION_REQ_INFO_T prConnReqInfo,
					OUT P_P2P_CHNL_REQ_INFO_T prChnlReqInfo)
{
	ENUM_BAND_T eBandBackup;
	UINT_8 ucChannelBackup;
	ENUM_CHNL_EXT_T eSCOBackup;
	P_P2P_ROLE_FSM_INFO_T prP2pRoleFsmInfo = (P_P2P_ROLE_FSM_INFO_T) NULL;

	do {

		eBandBackup = prBssInfo->eBand;
		ucChannelBackup = prBssInfo->ucPrimaryChannel;
		eSCOBackup = prBssInfo->eBssSCO;

		prBssInfo->ucPrimaryChannel = prConnReqInfo->rChannelInfo.ucChannelNum;
		prBssInfo->eBand = prConnReqInfo->rChannelInfo.eBand;

		prBssInfo->eBssSCO = rlmGetScoForAP(prAdapter, prBssInfo);

		prP2pRoleFsmInfo = P2P_ROLE_INDEX_2_ROLE_FSM_INFO(prAdapter, prBssInfo->u4PrivateData);

		ASSERT_BREAK((prAdapter != NULL) && (prConnReqInfo != NULL) && (prChnlReqInfo != NULL));
		prChnlReqInfo->u8Cookie = 0;
		prChnlReqInfo->ucReqChnlNum = prConnReqInfo->rChannelInfo.ucChannelNum;
		prChnlReqInfo->eBand = prConnReqInfo->rChannelInfo.eBand;
		prChnlReqInfo->eChnlSco = prBssInfo->eBssSCO;
		prChnlReqInfo->u4MaxInterval =
				prAdapter->prGlueInfo->prP2PInfo[prP2pRoleFsmInfo->ucRoleIndex]->cac_time_ms;
		prChnlReqInfo->eChnlReqType = CH_REQ_TYPE_DFS_CAC;

		prBssInfo->ucVhtChannelWidth =
			cnmGetBssMaxBwToChnlBW(prAdapter, prBssInfo->ucBssIndex);
		prChnlReqInfo->eChannelWidth = prBssInfo->ucVhtChannelWidth;

		if (prChnlReqInfo->eChannelWidth == VHT_OP_CHANNEL_WIDTH_80P80) {
			/* TODO: BW80+80 support */
			DBGLOG(RLM, WARN, "BW80+80 not support. Fallback  to VHT_OP_CHANNEL_WIDTH_20_40\n");
			prChnlReqInfo->eChannelWidth = VHT_OP_CHANNEL_WIDTH_20_40;
			prChnlReqInfo->ucCenterFreqS1 = 0;
			prChnlReqInfo->ucCenterFreqS2 = 0;
		} else {
			prChnlReqInfo->ucCenterFreqS1 =
				rlmGetVhtS1ForAP(prAdapter, prBssInfo);
			prChnlReqInfo->ucCenterFreqS2 = 0;
		}

		DBGLOG(P2P, TRACE, "p2pRoleStatePrepare_To_REQING_CHANNEL_STATE\n");

		/* Reset */
		prBssInfo->ucPrimaryChannel = ucChannelBackup;
		prBssInfo->eBand = eBandBackup;
		prBssInfo->eBssSCO = eSCOBackup;
	} while (FALSE);
}
#endif