| /* |
| * Copyright (c) 2012-2013, 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. |
| */ |
| /* |
| * Copyright (c) 2012, 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. |
| */ |
| |
| /**========================================================================= |
| |
| \file limSessionUtils.c |
| \brief implementation for lim Session Utility APIs |
| \author Sunit Bhatia |
| |
| ========================================================================*/ |
| |
| |
| /*-------------------------------------------------------------------------- |
| Include Files |
| ------------------------------------------------------------------------*/ |
| #include "aniGlobal.h" |
| #include "limDebug.h" |
| #include "limSession.h" |
| #include "limSessionUtils.h" |
| #include "limUtils.h" |
| |
| /*-------------------------------------------------------------------------- |
| \brief peGetVhtCapable() - Returns the Vht capable from a valid session. |
| |
| This function itrates the session Table and returns the VHT capable from first valid session |
| if no sessions are valid/present it returns FALSE |
| |
| \param pMac - pointer to global adapter context |
| \return - channel to scan from valid session else zero. |
| |
| \sa |
| |
| --------------------------------------------------------------------------*/ |
| tANI_U8 peGetVhtCapable(tpAniSirGlobal pMac) |
| |
| { |
| #ifdef WLAN_FEATURE_11AC |
| tANI_U8 i; |
| //assumption here is that all the sessions will be on the same channel. |
| //This function will not work, once we have multiple channel support. |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid) |
| { |
| return(pMac->lim.gpSession[i].vhtCapability); |
| } |
| } |
| #endif |
| return FALSE; |
| } |
| /*-------------------------------------------------------------------------- |
| \brief peGetCurrentChannel() - Returns the channel number for scanning, |
| from a valid session. |
| This function itrates the session Table and returns the channel number |
| from first valid session if no sessions are valid/present it returns zero |
| |
| \param pMac - pointer to global adapter context |
| \return - channel to scan from valid session else zero. |
| \sa |
| --------------------------------------------------------------------------*/ |
| tANI_U8 peGetCurrentChannel(tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| //assumption here is that all the sessions will be on the same channel. |
| //This function will not work, once we have multiple channel support. |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid) |
| { |
| return(pMac->lim.gpSession[i].currentOperChannel); |
| } |
| } |
| return(HAL_INVALID_CHANNEL_ID); |
| } |
| |
| |
| /*-------------------------------------------------------------------------- |
| |
| \brief peValidateJoinReq() - validates the Join request . |
| |
| This function is called to validate the Join Request for a BT-AMP station. If start BSS session is present |
| this function returns TRUE else returns FALSE. |
| PE will force SME to first issue ''START_BSS' request for BTAMP_STA, before sending a JOIN request. |
| |
| \param pMac - pointer to global adapter context |
| \return - return TRUE if start BSS session is present else return FALSE. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| tANI_U8 peValidateBtJoinRequest(tpAniSirGlobal pMac) |
| { |
| |
| tANI_U8 i; |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if( (pMac->lim.gpSession[i].valid) && |
| (pMac->lim.gpSession[i].bssType == eSIR_BTAMP_STA_MODE) && |
| (pMac->lim.gpSession[i].statypeForBss == STA_ENTRY_SELF)) |
| { |
| return(TRUE); |
| } |
| |
| } |
| return(FALSE); |
| |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief peGetValidPowerSaveSession() - Fetches the valid session for powersave . |
| |
| This function is called to check the valid session for power save, if more than one session is active , this function |
| it returns NULL. |
| if there is only one valid "infrastructure" session present in "linkestablished" state this function returns sessionentry. |
| For all other cases it returns NULL. |
| |
| \param pMac - pointer to global adapter context |
| \return - return session is address if valid session is present else return NULL. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| |
| tpPESession peGetValidPowerSaveSession(tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| tANI_U8 sessioncount = 0; |
| tANI_U8 sessionId = 0; |
| |
| for(i = 0; i < pMac->lim.maxBssId; i++) |
| { |
| if( (pMac->lim.gpSession[i].valid == TRUE)&& |
| (pMac->lim.gpSession[i].limSystemRole == eLIM_STA_ROLE)&& |
| (pMac->lim.gpSession[i].limMlmState == eLIM_MLM_LINK_ESTABLISHED_STATE)) { |
| sessioncount++; |
| sessionId = i; |
| |
| if(sessioncount > 1) |
| { |
| return(NULL); |
| } |
| } |
| |
| } |
| |
| if( (pMac->lim.gpSession[sessionId].valid == TRUE)&& |
| (pMac->lim.gpSession[sessionId].limSystemRole == eLIM_STA_ROLE)&& |
| (pMac->lim.gpSession[sessionId].limMlmState == eLIM_MLM_LINK_ESTABLISHED_STATE)) |
| |
| { |
| return(&pMac->lim.gpSession[sessionId]); |
| } |
| return(NULL); |
| |
| } |
| /*-------------------------------------------------------------------------- |
| \brief peIsAnySessionActive() - checks for the active session presence . |
| |
| This function returns TRUE if atleast one valid session is present else it returns FALSE |
| |
| \param pMac - pointer to global adapter context |
| \return - return TRUE if atleast one session is active else return FALSE. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| |
| tANI_U8 peIsAnySessionActive(tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid == TRUE) |
| { |
| return(TRUE); |
| } |
| |
| } |
| return(FALSE); |
| |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief isLimSessionOffChannel() - Determines if the there is any other off channel |
| session. |
| |
| This function returns TRUE if the session Id passed needs to be on a different |
| channel than atleast one session already active. |
| |
| \param pMac - pointer to global adapter context |
| \param sessionId - session ID of the session to be verified. |
| |
| \return tANI_U8 - Boolean value for off-channel operation. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| tANI_U8 |
| isLimSessionOffChannel(tpAniSirGlobal pMac, tANI_U8 sessionId) |
| { |
| tANI_U8 i; |
| |
| if(sessionId >= pMac->lim.maxBssId) |
| { |
| limLog(pMac, LOGE, FL("Invalid sessionId: %d \n "), sessionId); |
| return FALSE; |
| } |
| |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if( i == sessionId ) |
| { |
| //Skip the sessionId that is to be joined. |
| continue; |
| } |
| //if another ession is valid and it is on different channel |
| //it is an off channel operation. |
| if( (pMac->lim.gpSession[i].valid) && |
| (pMac->lim.gpSession[i].currentOperChannel != |
| pMac->lim.gpSession[sessionId].currentOperChannel) ) |
| { |
| return TRUE; |
| } |
| } |
| |
| return FALSE; |
| |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief peGetActiveSessionChannel() - Gets the operating channel of first |
| valid session. Returns 0 if there is no |
| valid session. |
| |
| \param pMac - pointer to global adapter context |
| |
| \return tANI_U8 - operating channel. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| void |
| peGetActiveSessionChannel (tpAniSirGlobal pMac, tANI_U8* resumeChannel, ePhyChanBondState* resumePhyCbState) |
| { |
| tANI_U8 i; |
| ePhyChanBondState prevPhyCbState = PHY_SINGLE_CHANNEL_CENTERED; |
| |
| // Initialize the pointers passed to INVALID values in case we don't find a valid session |
| *resumeChannel = 0; |
| *resumePhyCbState = 0; |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid) |
| { |
| *resumeChannel = pMac->lim.gpSession[i].currentOperChannel; |
| *resumePhyCbState = pMac->lim.gpSession[i].htSecondaryChannelOffset; |
| |
| #ifdef WLAN_FEATURE_11AC |
| if ((pMac->lim.gpSession[i].vhtCapability)) |
| { |
| /*Get 11ac cbState from 11n cbState*/ |
| *resumePhyCbState = limGet11ACPhyCBState(pMac, |
| pMac->lim.gpSession[i].currentOperChannel, |
| pMac->lim.gpSession[i].htSecondaryChannelOffset, |
| pMac->lim.gpSession[i].apCenterChan, |
| &pMac->lim.gpSession[i]); |
| } |
| #endif |
| *resumePhyCbState = (*resumePhyCbState > prevPhyCbState )? *resumePhyCbState : prevPhyCbState; |
| prevPhyCbState = *resumePhyCbState; |
| } |
| } |
| return; |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief limIsChanSwitchRunning() - Check if channel switch is running on any |
| valid session. |
| |
| \param pMac - pointer to global adapter context |
| |
| \return tANI_U8 - 1 - if chann switching running. |
| 0 - if chann switching is not running. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| tANI_U8 |
| limIsChanSwitchRunning (tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid && |
| pMac->lim.gpSession[i].gLimSpecMgmt.dot11hChanSwState == eLIM_11H_CHANSW_RUNNING) |
| { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| /*-------------------------------------------------------------------------- |
| \brief limIsInQuietDuration() - Check if channel quieting is running on any |
| valid session. |
| |
| \param pMac - pointer to global adapter context |
| |
| \return tANI_U8 - 1 - if chann quiet running. |
| 0 - if chann quiet is not running. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| tANI_U8 |
| limIsInQuietDuration (tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid && |
| pMac->lim.gpSession[i].gLimSpecMgmt.quietState == eLIM_QUIET_RUNNING) |
| { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| /*-------------------------------------------------------------------------- |
| \brief limIsQuietBegin() - Check if channel quieting is begining on any |
| valid session. |
| |
| \param pMac - pointer to global adapter context |
| |
| \return tANI_U8 - 1 - if chann quiet running. |
| 0 - if chann quiet is not running. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| tANI_U8 |
| limIsQuietBegin (tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid && |
| pMac->lim.gpSession[i].gLimSpecMgmt.quietState == eLIM_QUIET_BEGIN) |
| { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief limIsInMCC() - Check if Device is in MCC. |
| |
| \param pMac - pointer to global adapter context |
| |
| \return tANI_U8 - TRUE - if in MCC. |
| FALSE - NOT in MCC. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| tANI_U8 |
| limIsInMCC (tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| tANI_U8 chan = 0; |
| |
| for(i = 0; i < pMac->lim.maxBssId; i++) |
| { |
| //if another session is valid and it is on different channel |
| //it is an off channel operation. |
| if( (pMac->lim.gpSession[i].valid) ) |
| { |
| if( chan == 0 ) |
| { |
| chan = pMac->lim.gpSession[i].currentOperChannel; |
| } |
| else if( chan != pMac->lim.gpSession[i].currentOperChannel) |
| { |
| return TRUE; |
| } |
| } |
| } |
| return FALSE; |
| } |
| |
| /*-------------------------------------------------------------------------- |
| \brief peGetCurrentSTAsCount() - Returns total stations associated on |
| all session. |
| |
| \param pMac - pointer to global adapter context |
| \return - Number of station active on all sessions. |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| tANI_U8 peGetCurrentSTAsCount(tpAniSirGlobal pMac) |
| { |
| tANI_U8 i; |
| tANI_U8 staCount = 0; |
| for(i =0; i < pMac->lim.maxBssId; i++) |
| { |
| if(pMac->lim.gpSession[i].valid == TRUE) |
| { |
| staCount += pMac->lim.gpSession[i].gLimNumOfCurrentSTAs; |
| } |
| } |
| return staCount; |
| } |
| |
| #ifdef FEATURE_WLAN_LFR |
| /*-------------------------------------------------------------------------- |
| \brief limIsFastRoamEnabled() - Check LFR is enabled or not |
| |
| This function returns the TRUE if LFR is enabled |
| |
| \param pMac - pointer to global adapter context |
| \param sessionId - session ID is returned here, if session is found. |
| |
| \return int - TRUE if enabled or else FALSE |
| |
| \sa |
| --------------------------------------------------------------------------*/ |
| |
| tANI_U8 limIsFastRoamEnabled(tpAniSirGlobal pMac, tANI_U8 sessionId) |
| { |
| if(TRUE == pMac->lim.gpSession[sessionId].valid) |
| { |
| if((eSIR_INFRASTRUCTURE_MODE == pMac->lim.gpSession[sessionId].bssType) && |
| (pMac->lim.gpSession[sessionId].isFastRoamIniFeatureEnabled)) |
| { |
| return TRUE; |
| } |
| } |
| |
| return FALSE; |
| } |
| #endif |
| |