/* * Copyright (c) 2012-2014, 2016-2017 The Linux Foundation. All rights reserved. * * Previously licensed under the ISC license by Qualcomm Atheros, Inc. * * * Permission to use, copy, modify, and/or distribute this software for * any purpose with or without fee is hereby granted, provided that the * above copyright notice and this permission notice appear in all * copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ /* * This file was originally distributed by Qualcomm Atheros, Inc. * under proprietary terms before Copyright ownership was assigned * to the Linux Foundation. */ /*=========================================================================== s a p C h S e l e c t . C OVERVIEW: This software unit holds the implementation of the WLAN SAP modules functions for channel selection. DEPENDENCIES: Are listed for each API below. ===========================================================================*/ /*=========================================================================== 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 ---------- --- -------------------------------------------------------- 2010-03-15 SOFTAP Created module ===========================================================================*/ /*-------------------------------------------------------------------------- Include Files ------------------------------------------------------------------------*/ #include "vos_trace.h" #include "csrApi.h" #include "sme_Api.h" #include "sapChSelect.h" #include "sapInternal.h" #ifdef ANI_OS_TYPE_QNX #include "stdio.h" #endif #include "wlan_hdd_main.h" /*-------------------------------------------------------------------------- Function definitions --------------------------------------------------------------------------*/ /*-------------------------------------------------------------------------- Defines --------------------------------------------------------------------------*/ #define SAP_DEBUG #define IS_RSSI_VALID( extRssi, rssi ) \ ( \ ((extRssi < rssi)?eANI_BOOLEAN_TRUE:eANI_BOOLEAN_FALSE) \ ) #ifdef FEATURE_WLAN_CH_AVOID extern safeChannelType safeChannels[]; #endif /* FEATURE_WLAN_CH_AVOID */ /*========================================================================== FUNCTION sapCleanupChannelList DESCRIPTION Function sapCleanupChannelList frees up the memory allocated to the channel list. DEPENDENCIES NA. PARAMETERS IN NULL RETURN VALUE NULL ============================================================================*/ void sapCleanupChannelList(void) { v_PVOID_t pvosGCtx = vos_get_global_context(VOS_MODULE_ID_SAP, NULL); ptSapContext pSapCtx; VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "Cleaning up the channel list structure"); if (NULL == pvosGCtx) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL, "SAP Global Context is NULL"); return ; } pSapCtx = VOS_GET_SAP_CB(pvosGCtx); if (NULL == pSapCtx) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL, "SAP Context is NULL"); return ; } pSapCtx->SapChnlList.numChannel = 0; vos_mem_free(pSapCtx->SapChnlList.channelList); pSapCtx->SapChnlList.channelList = NULL; } typedef struct { v_U16_t chStartNum; v_U32_t weight; } sapAcsChannelInfo; #define ACS_WEIGHT_MAX 4444 sapAcsChannelInfo acsHT40Channels5G[ ] = { {36, ACS_WEIGHT_MAX}, {44, ACS_WEIGHT_MAX}, {52, ACS_WEIGHT_MAX}, {60, ACS_WEIGHT_MAX}, {100, ACS_WEIGHT_MAX}, {108, ACS_WEIGHT_MAX}, {116, ACS_WEIGHT_MAX}, {124, ACS_WEIGHT_MAX}, {132, ACS_WEIGHT_MAX}, {140, ACS_WEIGHT_MAX}, {149, ACS_WEIGHT_MAX}, {157, ACS_WEIGHT_MAX}, }; sapAcsChannelInfo acsHT80Channels[ ] = { {36, ACS_WEIGHT_MAX}, {52, ACS_WEIGHT_MAX}, {100, ACS_WEIGHT_MAX}, {116, ACS_WEIGHT_MAX}, {132, ACS_WEIGHT_MAX}, {149, ACS_WEIGHT_MAX}, }; sapAcsChannelInfo acsHT40Channels24G[ ] = { {1, ACS_WEIGHT_MAX}, {2, ACS_WEIGHT_MAX}, {3, ACS_WEIGHT_MAX}, {4, ACS_WEIGHT_MAX}, {9, ACS_WEIGHT_MAX}, }; typedef enum { CHWIDTH_HT20, CHWIDTH_HT40, CHWIDTH_HT80, } eChannelWidthInfo; #define CHANNEL_165 165 /*========================================================================== FUNCTION sapSetPreferredChannel DESCRIPTION Function sapSetPreferredChannel sets the channel list which has been configured into sap context (pSapCtx) which will be used at the time of best channel selection. DEPENDENCIES NA. PARAMETERS IN *ptr: pointer having the command followed by the arguments in string format RETURN VALUE int: return 0 when success else returns error code. ============================================================================*/ int sapSetPreferredChannel(tANI_U8* ptr) { v_PVOID_t pvosGCtx = vos_get_global_context(VOS_MODULE_ID_SAP, NULL); ptSapContext pSapCtx; tANI_U8* param; int tempInt; int j; VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "Enter: %s", __func__); if (NULL == pvosGCtx) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL, "SAP Global Context is NULL"); return -EINVAL; } pSapCtx = VOS_GET_SAP_CB(pvosGCtx); if (NULL == pSapCtx) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_FATAL, "SAP Context is NULL"); return -EINVAL; } if (NULL != pSapCtx->SapChnlList.channelList) { sapCleanupChannelList(); } param = strchr(ptr, ' '); /*no argument after the command*/ if (NULL == param) { return -EINVAL; } /*no space after the command*/ else if (SPACE_ASCII_VALUE != *param) { return -EINVAL; } param++; /*removing empty spaces*/ while((SPACE_ASCII_VALUE == *param)&& ('\0' != *param) ) param++; /*no argument followed by spaces*/ if('\0' == *param) { return -EINVAL; } /*getting the first argument ie the number of channels*/ if (sscanf(param, "%d ", &tempInt) != 1) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s: Cannot get number of channels from input", __func__); return -EINVAL; } VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "%s: Number of channel added are: %d", __func__, tempInt); if (tempInt <= 0 || tempInt > 255) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s: Invalid Number of channel received", __func__); return -EINVAL; } /*allocating space for the desired number of channels*/ pSapCtx->SapChnlList.channelList = (v_U8_t *)vos_mem_malloc(tempInt); if (NULL == pSapCtx->SapChnlList.channelList) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "In %s, VOS_MALLOC_ERR", __func__); return -EINVAL; } pSapCtx->SapChnlList.numChannel = tempInt; for(j=0;jSapChnlList.numChannel;j++) { /*param pointing to the beginning of first space after number of channels*/ param = strpbrk( param, " " ); /*no channel list after the number of channels argument*/ if (NULL == param) { sapCleanupChannelList(); return -EINVAL; } param++; /*removing empty space*/ while((SPACE_ASCII_VALUE == *param) && ('\0' != *param) ) param++; /*no channel list after the number of channels argument and spaces*/ if( '\0' == *param ) { sapCleanupChannelList(); return -EINVAL; } if (sscanf(param, "%d ", &tempInt) != 1) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s: Cannot read channel number", __func__); sapCleanupChannelList(); return -EINVAL; } if (tempInt < 0 || tempInt > 255) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s: Invalid channel number received", __func__); sapCleanupChannelList(); return -EINVAL; } pSapCtx->SapChnlList.channelList[j] = tempInt; VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "%s: Channel %d added to preferred channel list", __func__, pSapCtx->SapChnlList.channelList[j] ); } /*extra arguments check*/ param = strpbrk( param, " " ); if (NULL != param) { while((SPACE_ASCII_VALUE == *param) && ('\0' != *param) ) param++; if('\0' != *param) { sapCleanupChannelList(); return -EINVAL; } } VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "Exit: %s", __func__); return 0; } /*========================================================================== FUNCTION sapSelectPreferredChannelFromChannelList DESCRIPTION Function sapSelectPreferredChannelFromChannelList calculates the best channel among the configured channel list. If channel list not configured then returns the best channel calculated among all the channel list. DEPENDENCIES NA. PARAMETERS IN *pSpectInfoParams : Pointer to tSapChSelSpectInfo structure bestChNum: best channel already calculated among all the chanels pSapCtx: having info of channel list from which best channel is selected RETURN VALUE v_U8_t: best channel ============================================================================*/ v_U8_t sapSelectPreferredChannelFromChannelList(v_U8_t bestChNum, ptSapContext pSapCtx, tSapChSelSpectInfo *pSpectInfoParams) { v_U8_t j = 0; v_U8_t count = 0; //If Channel List is not Configured don't do anything //Else return the Best Channel from the Channel List if((NULL == pSapCtx->SapChnlList.channelList) || (NULL == pSpectInfoParams) || (0 == pSapCtx->SapChnlList.numChannel)) { return bestChNum; } if (bestChNum > 0 && bestChNum <= 252) { for(count=0; count < pSpectInfoParams->numSpectChans ; count++) { bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[count].chNum; // Select the best channel from allowed list for(j=0;j< pSapCtx->SapChnlList.numChannel;j++) { if( (pSapCtx->SapChnlList.channelList[j]) == bestChNum) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "Best channel computed from Channel List is: %d", bestChNum); return bestChNum; } } } return SAP_CHANNEL_NOT_SELECTED; } else return SAP_CHANNEL_NOT_SELECTED; } /*========================================================================== FUNCTION sapChanSelInit DESCRIPTION Function sapChanSelInit allocates the memory, intializes the structures used by the channel selection algorithm DEPENDENCIES NA. PARAMETERS IN *pSpectInfoParams : Pointer to tSapChSelSpectInfo structure RETURN VALUE v_BOOL_t: Success or FAIL SIDE EFFECTS ============================================================================*/ v_BOOL_t sapChanSelInit(tHalHandle halHandle, tSapChSelSpectInfo *pSpectInfoParams) { tSapSpectChInfo *pSpectCh = NULL; v_U8_t *pChans = NULL; v_U16_t channelnum = 0; tpAniSirGlobal pMac = PMAC_STRUCT(halHandle); #ifdef FEATURE_WLAN_CH_AVOID v_U16_t i; v_BOOL_t chSafe = VOS_TRUE; #endif /* FEATURE_WLAN_CH_AVOID */ VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s", __func__); // Channels for that 2.4GHz band //Considered only for 2.4GHz need to change in future to support 5GHz support pSpectInfoParams->numSpectChans = pMac->scan.base20MHzChannels.numChannels; // Allocate memory for weight computation of 2.4GHz pSpectCh = (tSapSpectChInfo *)vos_mem_malloc((pSpectInfoParams->numSpectChans) * sizeof(*pSpectCh)); if(pSpectCh == NULL) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "In %s, VOS_MALLOC_ERR", __func__); return eSAP_FALSE; } vos_mem_zero(pSpectCh, (pSpectInfoParams->numSpectChans) * sizeof(*pSpectCh)); // Initialize the pointers in the DfsParams to the allocated memory pSpectInfoParams->pSpectCh = pSpectCh; pChans = pMac->scan.base20MHzChannels.channelList; // Fill the channel number in the spectrum in the operating freq band for (channelnum = 0; channelnum < pSpectInfoParams->numSpectChans; channelnum++) { #ifdef FEATURE_WLAN_CH_AVOID chSafe = VOS_TRUE; for(i = 0; i < NUM_20MHZ_RF_CHANNELS; i++) { if((safeChannels[i].channelNumber == *pChans) && (VOS_FALSE == safeChannels[i].isSafe)) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO, "%s : CH %d is not safe", __func__, *pChans); chSafe = VOS_FALSE; break; } } #endif /* FEATURE_WLAN_CH_AVOID */ if(*pChans == 14 ) //OFDM rates are not supported on channel 14 { pChans++; pSpectCh++; continue; } #ifdef FEATURE_WLAN_CH_AVOID if (VOS_TRUE == chSafe) { #endif /* FEATURE_WLAN_CH_AVOID */ VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_DEBUG, "%s : Available Ch %d", __func__, *pChans); pSpectCh->chNum = *pChans; pSpectCh->valid = eSAP_TRUE; // Initialise for all channels pSpectCh->rssiAgr = SOFTAP_MIN_RSSI; // Initialise 20MHz for all the Channels pSpectCh->channelWidth = SOFTAP_HT20_CHANNELWIDTH; #ifdef FEATURE_WLAN_CH_AVOID } #endif /* FEATURE_WLAN_CH_AVOID */ pSpectCh++; pChans++; } return eSAP_TRUE; } /*========================================================================== FUNCTION sapweightRssiCount DESCRIPTION Function weightRssiCount calculates the channel weight due to rssi and data count(here number of BSS observed) DEPENDENCIES NA. PARAMETERS IN rssi : Max signal strength receieved from a BSS for the channel count : Number of BSS observed in the channel RETURN VALUE v_U32_t : Calculated channel weight based on above two SIDE EFFECTS ============================================================================*/ v_U32_t sapweightRssiCount(v_S7_t rssi, v_U16_t count) { v_S31_t rssiWeight=0; v_S31_t countWeight=0; v_U32_t rssicountWeight=0; // Weight from RSSI rssiWeight = SOFTAP_RSSI_WEIGHT * (rssi - SOFTAP_MIN_RSSI) /(SOFTAP_MAX_RSSI - SOFTAP_MIN_RSSI); if(rssiWeight > SOFTAP_RSSI_WEIGHT) rssiWeight = SOFTAP_RSSI_WEIGHT; else if (rssiWeight < 0) rssiWeight = 0; // Weight from data count countWeight = SOFTAP_COUNT_WEIGHT * (count - SOFTAP_MIN_COUNT) /(SOFTAP_MAX_COUNT - SOFTAP_MIN_COUNT); if(countWeight > SOFTAP_COUNT_WEIGHT) countWeight = SOFTAP_COUNT_WEIGHT; rssicountWeight = rssiWeight + countWeight; VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, rssiWeight=%d, countWeight=%d, rssicountWeight=%d", __func__, rssiWeight, countWeight, rssicountWeight); return(rssicountWeight); } /*========================================================================== FUNCTION sapInterferenceRssiCount DESCRIPTION Function sapInterferenceRssiCount Considers the Adjacent channel rssi and data count(here number of BSS observed) DEPENDENCIES NA. PARAMETERS pSpectCh : Channel Information RETURN VALUE NA. SIDE EFFECTS ============================================================================*/ void sapInterferenceRssiCount(tSapSpectChInfo *pSpectCh, tSapSpectChInfo *spect_ch_strt_addr, tSapSpectChInfo *spect_ch_end_addr) { tSapSpectChInfo *pExtSpectCh = NULL; v_S31_t rssi; if (NULL == pSpectCh) { VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "%s: pSpectCh is NULL", __func__); return; } switch(pSpectCh->chNum) { case CHANNEL_1: pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_2: pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_3: pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_4: pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_5: case CHANNEL_6: case CHANNEL_7: pExtSpectCh = (pSpectCh - 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_8: pExtSpectCh = (pSpectCh - 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_9: pExtSpectCh = (pSpectCh - 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_10: pExtSpectCh = (pSpectCh - 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case CHANNEL_11: pExtSpectCh = (pSpectCh - 1); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FIRST_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_SEC_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_THIRD_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 4); if (pExtSpectCh != NULL && (pExtSpectCh >= spect_ch_strt_addr && pExtSpectCh < spect_ch_end_addr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_24GHZ_FOURTH_OVERLAP_CHAN_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if (pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; default: break; } } /*========================================================================== FUNCTION sapComputeSpectWeight DESCRIPTION Main function for computing the weight of each channel in the spectrum based on the RSSI value of the BSSes on the channel and number of BSS DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSpectInfoParams structure halHandle : Pointer to HAL handle pResult : Pointer to tScanResultHandle RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapComputeSpectWeight( tSapChSelSpectInfo* pSpectInfoParams, tHalHandle halHandle, tScanResultHandle pResult) { v_S7_t rssi = 0; v_U8_t chn_num = 0; v_U8_t channel_id = 0; tCsrScanResultInfo *pScanResult; tSapSpectChInfo *pSpectCh = pSpectInfoParams->pSpectCh; v_U32_t operatingBand; v_U16_t channelWidth; v_U16_t secondaryChannelOffset; v_U16_t centerFreq; v_U16_t vhtSupport; v_U32_t ieLen = 0; tSirProbeRespBeacon *pBeaconStruct; tpAniSirGlobal pMac = (tpAniSirGlobal) halHandle; tSapSpectChInfo *pSpectChStartAddr = pSpectInfoParams->pSpectCh; tSapSpectChInfo *pSpectChEndAddr = pSpectInfoParams->pSpectCh + pSpectInfoParams->numSpectChans; pBeaconStruct = vos_mem_malloc(sizeof(tSirProbeRespBeacon)); if ( NULL == pBeaconStruct ) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "Unable to allocate memory in sapComputeSpectWeight"); return; } VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Computing spectral weight", __func__); /** * Soft AP specific channel weight calculation using DFS formula */ ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_OPERATING_BAND, &operatingBand); pScanResult = sme_ScanResultGetFirst(halHandle, pResult); while (pScanResult) { pSpectCh = pSpectInfoParams->pSpectCh; // Defining the default values, so that any value will hold the default values channelWidth = eHT_CHANNEL_WIDTH_20MHZ; secondaryChannelOffset = PHY_SINGLE_CHANNEL_CENTERED; vhtSupport = 0; centerFreq = 0; if (pScanResult->BssDescriptor.ieFields != NULL) { ieLen = GET_IE_LEN_IN_BSS(pScanResult->BssDescriptor.length); vos_mem_set((tANI_U8 *) pBeaconStruct, sizeof(tSirProbeRespBeacon), 0); if ((sirParseBeaconIE(pMac, pBeaconStruct,(tANI_U8 *)( pScanResult->BssDescriptor.ieFields), ieLen)) == eSIR_SUCCESS) { if (pBeaconStruct->HTCaps.present && pBeaconStruct->HTInfo.present) { channelWidth = pBeaconStruct->HTCaps.supportedChannelWidthSet; secondaryChannelOffset = pBeaconStruct->HTInfo.secondaryChannelOffset; if(pBeaconStruct->VHTOperation.present) { vhtSupport = pBeaconStruct->VHTOperation.present; if(pBeaconStruct->VHTOperation.chanWidth > WNI_CFG_VHT_CHANNEL_WIDTH_20_40MHZ) { channelWidth = eHT_CHANNEL_WIDTH_80MHZ; centerFreq = pBeaconStruct->VHTOperation.chanCenterFreqSeg1; } } } } } // Processing for each tCsrScanResultInfo in the tCsrScanResult DLink list for (chn_num = 0; chn_num < pSpectInfoParams->numSpectChans; chn_num++) { /* * if the Beacon has channel ID, use it other wise we will * rely on the channelIdSelf */ if(pScanResult->BssDescriptor.channelId == 0) channel_id = pScanResult->BssDescriptor.channelIdSelf; else channel_id = pScanResult->BssDescriptor.channelId; if (pSpectCh && (channel_id == pSpectCh->chNum)) { if (pSpectCh->rssiAgr < pScanResult->BssDescriptor.rssi) pSpectCh->rssiAgr = pScanResult->BssDescriptor.rssi; ++pSpectCh->bssCount; // Increment the count of BSS if(operatingBand) // Connsidering the Extension Channel only in a channels { /* Updating the received ChannelWidth */ if (pSpectCh->channelWidth != channelWidth) pSpectCh->channelWidth = channelWidth; /* If received ChannelWidth is other than HT20, we need to update the extension channel Params as well */ /* channelWidth == 0, HT20 */ /* channelWidth == 1, HT40 */ /* channelWidth == 2, VHT80*/ switch(pSpectCh->channelWidth) { case eHT_CHANNEL_WIDTH_40MHZ: //HT40 switch( secondaryChannelOffset) { tSapSpectChInfo *pExtSpectCh = NULL; case PHY_DOUBLE_CHANNEL_LOW_PRIMARY: // Above the Primary Channel pExtSpectCh = (pSpectCh + 1); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; // REducing the rssi by -20 and assigning it to Extension channel if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } break; case PHY_DOUBLE_CHANNEL_HIGH_PRIMARY: // Below the Primary channel pExtSpectCh = (pSpectCh - 1); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; ++pExtSpectCh->bssCount; } break; } break; case eHT_CHANNEL_WIDTH_80MHZ: // VHT80 if((centerFreq - channel_id) == 6) { tSapSpectChInfo *pExtSpectCh = NULL; pExtSpectCh = (pSpectCh + 1); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -20 and assigning it to Subband 1 } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -30 and assigning it to Subband 2 } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 3); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND3_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; // Reducing the rssi by -40 and assigning it to Subband 3 } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } } else if((centerFreq - channel_id) == 2) { tSapSpectChInfo *pExtSpectCh = NULL; pExtSpectCh = (pSpectCh - 1 ); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 2); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } } else if((centerFreq - channel_id) == -2) { tSapSpectChInfo *pExtSpectCh = NULL; pExtSpectCh = (pSpectCh - 1 ); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh + 1); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } } else if((centerFreq - channel_id) == -6) { tSapSpectChInfo *pExtSpectCh = NULL; pExtSpectCh = (pSpectCh - 1 ); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND1_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 2); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND2_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } pExtSpectCh = (pSpectCh - 3); if( pExtSpectCh != NULL && (pExtSpectCh >= pSpectChStartAddr && pExtSpectCh < pSpectChEndAddr)) { ++pExtSpectCh->bssCount; rssi = pSpectCh->rssiAgr + SAP_SUBBAND3_RSSI_EFFECT_PRIMARY; if (IS_RSSI_VALID(pExtSpectCh->rssiAgr, rssi)) { pExtSpectCh->rssiAgr = rssi; } if(pExtSpectCh->rssiAgr < SOFTAP_MIN_RSSI) pExtSpectCh->rssiAgr = SOFTAP_MIN_RSSI; } } break; } } else if(operatingBand == eSAP_RF_SUBBAND_2_4_GHZ) { sapInterferenceRssiCount(pSpectCh, pSpectChStartAddr, pSpectChEndAddr); } VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, bssdes.ch_self=%d, bssdes.ch_ID=%d, bssdes.rssi=%d, SpectCh.bssCount=%d, pScanResult=%pK, ChannelWidth %d, secondaryChanOffset %d, center frequency %d ", __func__, pScanResult->BssDescriptor.channelIdSelf, pScanResult->BssDescriptor.channelId, pScanResult->BssDescriptor.rssi, pSpectCh->bssCount, pScanResult,pSpectCh->channelWidth,secondaryChannelOffset,centerFreq); pSpectCh++; break; } else { pSpectCh++; } } pScanResult = sme_ScanResultGetNext(halHandle, pResult); } // Calculate the weights for all channels in the spectrum pSpectCh pSpectCh = pSpectInfoParams->pSpectCh; VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Spectrum Channels Weight", __func__); for (chn_num = 0; chn_num < (pSpectInfoParams->numSpectChans); chn_num++) { /* rssi : Maximum received signal strength among all BSS on that channel bssCount : Number of BSS on that channel */ rssi = (v_S7_t)pSpectCh->rssiAgr; pSpectCh->weight = SAPDFS_NORMALISE_1000 * sapweightRssiCount(rssi, pSpectCh->bssCount); pSpectCh->weight_copy = pSpectCh->weight; //------ Debug Info ------ VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Chan=%d Weight= %d rssiAgr=%d bssCount=%d", __func__, pSpectCh->chNum, pSpectCh->weight, pSpectCh->rssiAgr, pSpectCh->bssCount); //------ Debug Info ------ pSpectCh++; } vos_mem_free(pBeaconStruct); } /*========================================================================== FUNCTION sapChanSelExit DESCRIPTION Exit function for free out the allocated memory, to be called at the end of the dfsSelectChannel function DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapChanSelExit( tSapChSelSpectInfo *pSpectInfoParams ) { // Free all the allocated memory vos_mem_free(pSpectInfoParams->pSpectCh); } /*========================================================================== FUNCTION sapSortChlWeight DESCRIPTION Funtion to sort the channels with the least weight first DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapSortChlWeight(tSapChSelSpectInfo *pSpectInfoParams) { tSapSpectChInfo temp; tSapSpectChInfo *pSpectCh = NULL; v_U32_t i = 0, j = 0, minWeightIndex = 0; pSpectCh = pSpectInfoParams->pSpectCh; for (i = 0; i < pSpectInfoParams->numSpectChans; i++) { minWeightIndex = i; for( j = i + 1; j < pSpectInfoParams->numSpectChans; j++) { if(pSpectCh[j].weight < pSpectCh[minWeightIndex].weight) { minWeightIndex = j; } } if(minWeightIndex != i) { vos_mem_copy(&temp, &pSpectCh[minWeightIndex], sizeof(*pSpectCh)); vos_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], sizeof(*pSpectCh)); vos_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh)); } } } /*========================================================================== FUNCTION sapSortChlWeightHT80 DESCRIPTION Funtion to sort the channels with the least weight first for HT80 channels DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapSortChlWeightHT80(tSapChSelSpectInfo *pSpectInfoParams) { v_U8_t i, j, n; tSapSpectChInfo *pSpectInfo; v_U8_t minIdx; pSpectInfo = pSpectInfoParams->pSpectCh; /* for each HT80 channel, calculate the combined weight of the four 20MHz weight */ for (i = 0; i < ARRAY_SIZE(acsHT80Channels); i++) { for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { if ( pSpectInfo[j].chNum == acsHT80Channels[i].chStartNum ) break; } if (j == pSpectInfoParams->numSpectChans) continue; /*found the channel, add the 4 adjacent channels' weight*/ if (((pSpectInfo[j].chNum +4) == pSpectInfo[j+1].chNum) && ((pSpectInfo[j].chNum +8) == pSpectInfo[j+2].chNum) && ((pSpectInfo[j].chNum +12) == pSpectInfo[j+3].chNum)) { acsHT80Channels[i].weight = pSpectInfo[j].weight + pSpectInfo[j+1].weight + pSpectInfo[j+2].weight + pSpectInfo[j+3].weight; /* find best channel among 4 channels as the primary channel */ if ((pSpectInfo[j].weight + pSpectInfo[j+1].weight) < (pSpectInfo[j+2].weight + pSpectInfo[j+3].weight)) { /* lower 2 channels are better choice */ if (pSpectInfo[j].weight < pSpectInfo[j+1].weight) minIdx = 0; else minIdx = 1; } else { /* upper 2 channels are better choice */ if (pSpectInfo[j+2].weight <= pSpectInfo[j+3].weight) minIdx = 2; else minIdx = 3; } /* set all 4 channels to max value first, then reset the best channel as the selected primary channel, update its weightage with the combined weight value */ for (n=0; n<4; n++) pSpectInfo[j+n].weight = ACS_WEIGHT_MAX * 4; pSpectInfo[j+minIdx].weight = acsHT80Channels[i].weight; } else { /* some channels does not exist in pSectInfo array, skip this channel and those in the same HT80 width*/ pSpectInfo[j].weight = ACS_WEIGHT_MAX * 4; if ((pSpectInfo[j].chNum +4) == pSpectInfo[j+1].chNum) pSpectInfo[j+1].weight = ACS_WEIGHT_MAX * 4; if ((pSpectInfo[j].chNum +8) == pSpectInfo[j+2].chNum) pSpectInfo[j+2].weight = ACS_WEIGHT_MAX * 4; if ((pSpectInfo[j].chNum +12) == pSpectInfo[j+3].chNum) pSpectInfo[j+3].weight = ACS_WEIGHT_MAX * 4; } } pSpectInfo = pSpectInfoParams->pSpectCh; for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { if ( CHANNEL_165 == pSpectInfo[j].chNum ) { pSpectInfo[j].weight = ACS_WEIGHT_MAX * 4; break; } } pSpectInfo = pSpectInfoParams->pSpectCh; for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d", __func__, pSpectInfo->chNum, pSpectInfo->weight, pSpectInfo->rssiAgr, pSpectInfo->bssCount); pSpectInfo++; } sapSortChlWeight(pSpectInfoParams); } /*========================================================================== FUNCTION sapSortChlWeightHT40_24G DESCRIPTION Funtion to sort the channels with the least weight first for 20MHz channels DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapSortChlWeightHT40_24G(tSapChSelSpectInfo *pSpectInfoParams) { v_U8_t i, j; tSapSpectChInfo *pSpectInfo; v_U32_t tmpWeight1, tmpWeight2; pSpectInfo = pSpectInfoParams->pSpectCh; /*for each HT40 channel, calculate the combined weight of the two 20MHz weight */ for (i = 0; i < ARRAY_SIZE(acsHT40Channels24G); i++) { for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { if (pSpectInfo[j].chNum == acsHT40Channels24G[i].chStartNum) break; } if (j == pSpectInfoParams->numSpectChans) continue; if ((pSpectInfo[j].chNum +4) == pSpectInfo[j+4].chNum) { /* check if there is another channel combination possiblity e.g., {1, 5} & {5, 9} */ if ((pSpectInfo[j+4].chNum + 4)== pSpectInfo[j+8].chNum) { /* need to compare two channel pairs */ tmpWeight1 = pSpectInfo[j].weight + pSpectInfo[j+4].weight; tmpWeight2 = pSpectInfo[j+4].weight + pSpectInfo[j+8].weight; if (tmpWeight1 <= tmpWeight2) { if (pSpectInfo[j].weight <= pSpectInfo[j+4].weight) { pSpectInfo[j].weight = tmpWeight1; pSpectInfo[j+4].weight = ACS_WEIGHT_MAX * 2; pSpectInfo[j+8].weight = ACS_WEIGHT_MAX * 2; } else { pSpectInfo[j+4].weight = tmpWeight1; pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; pSpectInfo[j+8].weight = ACS_WEIGHT_MAX * 2; } } else { if (pSpectInfo[j+4].weight <= pSpectInfo[j+8].weight) { pSpectInfo[j+4].weight = tmpWeight2; pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; pSpectInfo[j+8].weight = ACS_WEIGHT_MAX * 2; } else { pSpectInfo[j+8].weight = tmpWeight2; pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; pSpectInfo[j+4].weight = ACS_WEIGHT_MAX * 2; } } } else { tmpWeight1 = pSpectInfo[j].weight + pSpectInfo[j+4].weight; if (pSpectInfo[j].weight <= pSpectInfo[j+4].weight) { pSpectInfo[j].weight = tmpWeight1; pSpectInfo[j+4].weight = ACS_WEIGHT_MAX * 2; } else { pSpectInfo[j+4].weight = tmpWeight1; pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; } } } else pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; } sapSortChlWeight(pSpectInfoParams); } /*========================================================================== FUNCTION sapSortChlWeightHT40_5G DESCRIPTION Funtion to sort the channels with the least weight first for HT40 channels DEPENDENCIES NA. PARAMETERS IN pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapSortChlWeightHT40_5G(tSapChSelSpectInfo *pSpectInfoParams) { v_U8_t i, j; tSapSpectChInfo *pSpectInfo; pSpectInfo = pSpectInfoParams->pSpectCh; /*for each HT40 channel, calculate the combined weight of the two 20MHz weight */ for (i = 0; i < ARRAY_SIZE(acsHT40Channels5G); i++) { for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { if (pSpectInfo[j].chNum == acsHT40Channels5G[i].chStartNum) break; } if (j == pSpectInfoParams->numSpectChans) continue; /* found the channel, add the two adjacent channels' weight */ if ( (pSpectInfo[j].chNum +4) == pSpectInfo[j+1].chNum) { acsHT40Channels5G[i].weight = pSpectInfo[j].weight + pSpectInfo[j+1].weight; /* select better of the adjact channel as the primary channel */ if (pSpectInfo[j].weight <= pSpectInfo[j+1].weight) { pSpectInfo[j].weight = acsHT40Channels5G[i].weight; /* mark the adjacent channel's weight as max value so that it will be sorted to the bottom */ pSpectInfo[j+1].weight = ACS_WEIGHT_MAX * 2; } else { pSpectInfo[j+1].weight = acsHT40Channels5G[i].weight; /* mark the adjacent channel's weight as max value so that it will be sorted to the bottom */ pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; } } else pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; } /* avoid channel 165 by setting its weight to max */ pSpectInfo = pSpectInfoParams->pSpectCh; for (j = 0; j < pSpectInfoParams->numSpectChans; j++) { if ( CHANNEL_165 == pSpectInfo[j].chNum ) { pSpectInfo[j].weight = ACS_WEIGHT_MAX * 2; break; } } pSpectInfo = pSpectInfoParams->pSpectCh; for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d", __func__, pSpectInfo->chNum, pSpectInfo->weight, pSpectInfo->rssiAgr, pSpectInfo->bssCount); pSpectInfo++; } sapSortChlWeight(pSpectInfoParams); } /*========================================================================== FUNCTION sapSortChlWeightAll DESCRIPTION Funtion to sort the channels with the least weight first DEPENDENCIES NA. PARAMETERS IN ptSapContext : Pointer to the ptSapContext structure pSpectInfoParams : Pointer to the tSapChSelSpectInfo structure RETURN VALUE void : NULL SIDE EFFECTS ============================================================================*/ void sapSortChlWeightAll(ptSapContext pSapCtx, tSapChSelSpectInfo *pSpectInfoParams, eChannelWidthInfo chWidth, v_U32_t operatingBand) { tSapSpectChInfo *pSpectCh = NULL; v_U32_t j = 0; #ifndef SOFTAP_CHANNEL_RANGE v_U32_t i = 0; #endif pSpectCh = pSpectInfoParams->pSpectCh; #ifdef SOFTAP_CHANNEL_RANGE switch (chWidth) { case CHWIDTH_HT40: if (eSAP_RF_SUBBAND_2_4_GHZ == operatingBand) sapSortChlWeightHT40_24G(pSpectInfoParams); else sapSortChlWeightHT40_5G(pSpectInfoParams); break; case CHWIDTH_HT80: sapSortChlWeightHT80(pSpectInfoParams); break; case CHWIDTH_HT20: default: /* Sorting the channels as per weights as 20MHz channels */ sapSortChlWeight(pSpectInfoParams); } #else /* Sorting the channels as per weights */ for (i = 0; i < SPECT_24GHZ_CH_COUNT; i++) { minWeightIndex = i; for( j = i + 1; j < SPECT_24GHZ_CH_COUNT; j++) { if(pSpectCh[j].weight < pSpectCh[minWeightIndex].weight) { minWeightIndex = j; } } if(minWeightIndex != i) { vos_mem_copy(&temp, &pSpectCh[minWeightIndex], sizeof(*pSpectCh)); vos_mem_copy(&pSpectCh[minWeightIndex], &pSpectCh[i], sizeof(*pSpectCh)); vos_mem_copy(&pSpectCh[i], &temp, sizeof(*pSpectCh)); } } #endif /* For testing */ VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Sorted Spectrum Channels Weight", __func__); pSpectCh = pSpectInfoParams->pSpectCh; for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d", __func__, pSpectCh->chNum, pSpectCh->weight, pSpectCh->rssiAgr, pSpectCh->bssCount); pSpectCh++; } } eChannelWidthInfo sapGetChannelWidthInfo(tHalHandle halHandle, ptSapContext pSapCtx, v_U32_t operatingBand, eSapPhyMode phyMode) { v_U32_t cbMode; eChannelWidthInfo chWidth = CHWIDTH_HT20; #ifdef WLAN_FEATURE_AP_HT40_24G if (eSAP_RF_SUBBAND_2_4_GHZ == operatingBand) cbMode = sme_GetChannelBondingMode24G(halHandle); else #endif cbMode = sme_GetChannelBondingMode5G(halHandle); if (phyMode == eSAP_DOT11_MODE_11n || phyMode == eSAP_DOT11_MODE_11n_ONLY) { if (cbMode) chWidth = CHWIDTH_HT40; else chWidth = CHWIDTH_HT20; } else if (pSapCtx->csrRoamProfile.phyMode == eSAP_DOT11_MODE_11ac || pSapCtx->csrRoamProfile.phyMode == eSAP_DOT11_MODE_11ac_ONLY) { chWidth = CHWIDTH_HT80; } else { /* Sorting the channels as per weights as 20MHz channels */ chWidth = CHWIDTH_HT20; } return chWidth; } /*========================================================================== FUNCTION sapSelectChannel DESCRIPTION Runs a algorithm to select the best channel to operate in based on BSS rssi and bss count on each channel DEPENDENCIES NA. PARAMETERS IN halHandle : Pointer to HAL handle pResult : Pointer to tScanResultHandle RETURN VALUE v_U8_t : Success - channel number, Fail - zero SIDE EFFECTS ============================================================================*/ v_U8_t sapSelectChannel(tHalHandle halHandle, ptSapContext pSapCtx, tScanResultHandle pScanResult) { // DFS param object holding all the data req by the algo tSapChSelSpectInfo oSpectInfoParams = {NULL,0}; tSapChSelSpectInfo *pSpectInfoParams = &oSpectInfoParams; // Memory? NB v_U8_t bestChNum = SAP_CHANNEL_NOT_SELECTED; #ifdef SOFTAP_CHANNEL_RANGE v_U32_t startChannelNum; v_U32_t endChannelNum; v_U32_t operatingBand = 0; v_U32_t tmpChNum; v_U8_t count; eChannelWidthInfo chWidth; #endif VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Running SAP Ch Select", __func__); // Initialize the structure pointed by pSpectInfoParams if(sapChanSelInit( halHandle, pSpectInfoParams) != eSAP_TRUE ) { VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR, "In %s, Ch Select initialization failed", __func__); return SAP_CHANNEL_NOT_SELECTED; } // Compute the weight of the entire spectrum in the operating band sapComputeSpectWeight( pSpectInfoParams, halHandle, pScanResult); #ifdef SOFTAP_CHANNEL_RANGE if (eCSR_BAND_ALL == pSapCtx->scanBandPreference) { ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_START_CHANNEL, &startChannelNum); ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_END_CHANNEL, &endChannelNum); ccmCfgGetInt( halHandle, WNI_CFG_SAP_CHANNEL_SELECT_OPERATING_BAND, &operatingBand); } else { if (eCSR_BAND_24 == pSapCtx->currentPreferredBand) { startChannelNum = rfChannels[RF_CHAN_1].channelNum; endChannelNum = rfChannels[RF_CHAN_14].channelNum; operatingBand = eSAP_RF_SUBBAND_2_4_GHZ; } else { startChannelNum = rfChannels[RF_CHAN_36].channelNum; endChannelNum = rfChannels[RF_CHAN_165].channelNum; operatingBand = eSAP_RF_SUBBAND_5_ALL_GHZ; } } pSapCtx->acsBestChannelInfo.channelNum = 0; pSapCtx->acsBestChannelInfo.weight = CFG_ACS_BAND_SWITCH_THRESHOLD_MAX; /* find the channel width info */ chWidth = sapGetChannelWidthInfo(halHandle, pSapCtx, operatingBand, pSapCtx->csrRoamProfile.phyMode); VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, chWidth=%u", __func__, chWidth); /* Sort the channel list as per the computed weights, lesser weight first.*/ sapSortChlWeightAll(pSapCtx, pSpectInfoParams, chWidth, operatingBand); /*Loop till get the best channel in the given range */ for(count=0; count < pSpectInfoParams->numSpectChans ; count++) { if((startChannelNum <= pSpectInfoParams->pSpectCh[count].chNum)&& ( endChannelNum >= pSpectInfoParams->pSpectCh[count].chNum)) { if (NV_CHANNEL_ENABLE != vos_nv_getChannelEnabledState(pSpectInfoParams->pSpectCh[count].chNum)) { continue; //skip this channel, continue to next channel } if(bestChNum == SAP_CHANNEL_NOT_SELECTED) { bestChNum = pSpectInfoParams->pSpectCh[count].chNum; /* check if bestChNum is in preferred channel list */ bestChNum = sapSelectPreferredChannelFromChannelList( bestChNum, pSapCtx, pSpectInfoParams); if (bestChNum == SAP_CHANNEL_NOT_SELECTED) { /* not in preferred channel list, go to next best channel*/ continue; } if (pSpectInfoParams->pSpectCh[count].weight_copy > pSapCtx->acsBandSwitchThreshold) { /* the best channel exceeds the threshold check if need to scan next band */ if ((eCSR_BAND_ALL != pSapCtx->scanBandPreference) && !pSapCtx->allBandScanned) { /* store best channel for later comparison */ pSapCtx->acsBestChannelInfo.channelNum = bestChNum; pSapCtx->acsBestChannelInfo.weight = pSpectInfoParams->pSpectCh[count].weight; bestChNum = SAP_CHANNEL_NOT_SELECTED; break; } else { /* all bands are scanned, compare current best channel with channel scanned previously */ if ( pSpectInfoParams->pSpectCh[count].weight_copy > pSapCtx->acsBestChannelInfo.weight) { /* previous stored channel is better */ bestChNum = pSapCtx->acsBestChannelInfo.channelNum; } else { pSapCtx->acsBestChannelInfo.channelNum = bestChNum; pSapCtx->acsBestChannelInfo.weight = pSpectInfoParams->pSpectCh[count].weight_copy; } } } } else { if(operatingBand == RF_SUBBAND_2_4_GHZ) { /* Give preference to Non-overlap channels */ if(((pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_1) || (pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_6) || (pSpectInfoParams->pSpectCh[count].chNum == CHANNEL_11))&& (pSpectInfoParams->pSpectCh[count].weight_copy == pSapCtx->acsBestChannelInfo.weight)) { tmpChNum = pSpectInfoParams->pSpectCh[count].chNum; tmpChNum = sapSelectPreferredChannelFromChannelList(tmpChNum, pSapCtx, pSpectInfoParams); if ( tmpChNum != SAP_CHANNEL_NOT_SELECTED) { bestChNum = tmpChNum; break; } } } } } } #else // Sort the channel list as per the computed weights, lesser weight first. sapSortChlWeightAll(pSapCtx, halHandle, pSpectInfoParams); // Get the first channel in sorted array as best 20M Channel bestChNum = (v_U8_t)pSpectInfoParams->pSpectCh[0].chNum; //Select Best Channel from Channel List if Configured bestChNum = sapSelectPreferredChannelFromChannelList(bestChNum, pSapCtx, pSpectInfoParams); #endif // Free all the allocated memory sapChanSelExit(pSpectInfoParams); VOS_TRACE(VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_INFO_HIGH, "In %s, Running SAP Ch select Completed, Ch=%d", __func__, bestChNum); if (bestChNum > 0 && bestChNum <= 252) return bestChNum; else return SAP_CHANNEL_NOT_SELECTED; }