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qcacld-3.0: Set ACS weight to max for channels not in scan list

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When gApAutoChannelSelection is set to 1 in ini, HOST driver ACS
runs in wlan_hdd_cfg80211_start_bss() with all the channel width,
hw mode and start and end channel parameters overridden with the
values from ini. After scan on all the channels, a weight is
assigned to all the channels based on rssi and no. of BSS present
on that channel. Weights of all the channels not present in the
scan list remains 0 as no scan happened on those channels and so
BSS count is 0 and RSSI is max. As the channel with lowest weight
is selected, channel which is not even present in scan list is getting
selected.

Assign SAP_ACS_WEIGHT_MAX to all the channels not in the scan list so
only one of the channel present in scan list gets selected after ACS
algorithm is completed.

Change-Id: Ic567c412ec7f68e2bb5d12e8e982650e56fd0488
CRs-Fixed: 2164979
This commit is contained in:
Himanshu Agarwal
2018-01-18 20:26:35 +05:30
committed by snandini
parent 62a55f847c
commit fee2e36308
1 changed files with 21 additions and 1 deletions
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22
core/sap/src/sap_ch_select.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
* Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
@@ -604,6 +604,7 @@ static bool sap_chan_sel_init(tHalHandle halHandle,
#endif
uint32_t dfs_master_cap_enabled;
bool include_dfs_ch = true;
uint8_t chan_num;
QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO_HIGH, "In %s",
__func__);
@@ -693,6 +694,21 @@ static bool sap_chan_sel_init(tHalHandle halHandle,
pSpectCh->valid = true;
pSpectCh->rssiAgr = SOFTAP_MIN_RSSI; /* Initialise for all channels */
pSpectCh->channelWidth = SOFTAP_HT20_CHANNELWIDTH; /* Initialise 20MHz for all the Channels */
/* Initialise max ACS weight for all channels */
pSpectCh->weight = SAP_ACS_WEIGHT_MAX;
for (chan_num = 0; chan_num < sap_ctx->num_of_channel;
chan_num++) {
if (pSpectCh->chNum !=
sap_ctx->channelList[chan_num])
continue;
/*
* Initialize ACS weight to 0 for channels
* present in sap context scan channel list
*/
pSpectCh->weight = 0;
break;
}
}
}
return true;
@@ -1649,6 +1665,9 @@ static void sap_compute_spect_weight(tSapChSelSpectInfo *pSpectInfoParams,
if (ch_in_pcl(sap_ctx, chn_num))
rssi -= PCL_RSSI_DISCOUNT;
if (pSpectCh->weight == SAP_ACS_WEIGHT_MAX)
goto debug_info;
pSpectCh->weight =
SAPDFS_NORMALISE_1000 *
(sapweight_rssi_count(sap_ctx, rssi,
@@ -1659,6 +1678,7 @@ static void sap_compute_spect_weight(tSapChSelSpectInfo *pSpectInfoParams,
pSpectCh->weight = SAP_ACS_WEIGHT_MAX;
pSpectCh->weight_copy = pSpectCh->weight;
debug_info:
/* ------ Debug Info ------ */
QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO_HIGH,
"In %s, Chan=%d Weight= %d rssiAgr=%d bssCount=%d",