commit b1f7d3433bb28a864d3cc868b561d8333165f4e8
author Leela V Kiran Kumar Reddy Chirala <kchirala@qca.qualcomm.com> Mon Feb 11 00:27:02 2013 -0800
committer Gopichand Nakkala <gnakkala@qca.qualcomm.com> Tue Feb 19 16:40:37 2013 -0800
tree 768e808eabc5396e0caa2deb5eaa69b8d029a1f3
parent e748020fe48e316b063b4e7595dacde3753fdd90

Disable LDPC in sta mode when AP is TXBF capable

In STA mode when both LDPC and TXBF are enabled, throughput is
not stable.As a workaround, till root cause is identified disable
LDPC when AP is TXBF capable.

Change-Id: I3e04aa0c580624cc0b182d464fd08bb70ee423da
CRs-fixed: 451252

CORE/MAC/src/pe/lim/limApi.c

diff --git a/CORE/MAC/src/pe/lim/limApi.c b/CORE/MAC/src/pe/lim/limApi.c
index 2d1605f..a49a1ba 100644
--- a/CORE/MAC/src/pe/lim/limApi.c
+++ b/CORE/MAC/src/pe/lim/limApi.c
@@ -644,6 +644,11 @@
    /* This was initially done after resume notification from HAL. Now, DAL is
       started before PE so this can be done here */
    handleHTCapabilityandHTInfo(pMac, NULL);
+   if(wlan_cfgGetInt(pMac, WNI_CFG_DISABLE_LDPC_WITH_TXBF_AP,(tANI_U32 *) &pMac->lim.disableLDPCWithTxbfAP) != eSIR_SUCCESS)
+   {
+      limLog(pMac, LOGP, FL("cfg get disableLDPCWithTxbfAP failed\n"));
+      return eSIR_FAILURE;
+   }
 
    return eSIR_SUCCESS;
 }

CORE/MAC/src/pe/lim/limAssocUtils.c

diff --git a/CORE/MAC/src/pe/lim/limAssocUtils.c b/CORE/MAC/src/pe/lim/limAssocUtils.c
index e72b0ea..79ea0d0 100644
--- a/CORE/MAC/src/pe/lim/limAssocUtils.c
+++ b/CORE/MAC/src/pe/lim/limAssocUtils.c
@@ -2248,8 +2248,16 @@
     {
         /* peer STA get the LDPC capability from pStaDs, which populated from 
          * HT/VHT capability*/
-        pAddStaParams->htLdpcCapable = pStaDs->htLdpcCapable;
-        pAddStaParams->vhtLdpcCapable = pStaDs->vhtLdpcCapable;
+        if(pAddStaParams->vhtTxBFCapable && pMac->lim.disableLDPCWithTxbfAP)
+        {
+            pAddStaParams->htLdpcCapable = 0;
+            pAddStaParams->vhtLdpcCapable = 0;
+        }
+        else
+        {
+            pAddStaParams->htLdpcCapable = pStaDs->htLdpcCapable;
+            pAddStaParams->vhtLdpcCapable = pStaDs->vhtLdpcCapable;
+        }
     }
     else if( STA_ENTRY_SELF == pStaDs->staType)
     {
@@ -3338,8 +3346,16 @@
             pAddBssParams->staContext.fShortGI20Mhz = (tANI_U8)pAssocRsp->HTCaps.shortGI20MHz;
             pAddBssParams->staContext.fShortGI40Mhz = (tANI_U8)pAssocRsp->HTCaps.shortGI40MHz;
             pAddBssParams->staContext.maxAmpduSize= pAssocRsp->HTCaps.maxRxAMPDUFactor;
-            pAddBssParams->staContext.htLdpcCapable = (tANI_U8)pAssocRsp->HTCaps.advCodingCap;
-            pAddBssParams->staContext.vhtLdpcCapable = (tANI_U8)pAssocRsp->VHTCaps.ldpcCodingCap;
+            if( pAddBssParams->staContext.vhtTxBFCapable && pMac->lim.disableLDPCWithTxbfAP )
+            {
+                pAddBssParams->staContext.htLdpcCapable = 0;
+                pAddBssParams->staContext.vhtLdpcCapable = 0;
+            }
+            else
+            {
+                pAddBssParams->staContext.htLdpcCapable = (tANI_U8)pAssocRsp->HTCaps.advCodingCap;
+                pAddBssParams->staContext.vhtLdpcCapable = (tANI_U8)pAssocRsp->VHTCaps.ldpcCodingCap;
+            }
 
             if( pBeaconStruct->HTInfo.present )
                 pAddBssParams->staContext.rifsMode = pAssocRsp->HTInfo.rifsMode;
@@ -3623,8 +3639,16 @@
             pAddBssParams->staContext.fShortGI20Mhz = (tANI_U8)pBeaconStruct->HTCaps.shortGI20MHz;
             pAddBssParams->staContext.fShortGI40Mhz = (tANI_U8)pBeaconStruct->HTCaps.shortGI40MHz;
             pAddBssParams->staContext.maxAmpduSize= pBeaconStruct->HTCaps.maxRxAMPDUFactor;
-            pAddBssParams->staContext.htLdpcCapable = (tANI_U8)pBeaconStruct->HTCaps.advCodingCap;
-            pAddBssParams->staContext.vhtLdpcCapable = (tANI_U8)pBeaconStruct->VHTCaps.ldpcCodingCap;
+            if( pAddBssParams->staContext.vhtTxBFCapable && pMac->lim.disableLDPCWithTxbfAP )
+            {
+                pAddBssParams->staContext.htLdpcCapable = 0;
+                pAddBssParams->staContext.vhtLdpcCapable = 0;
+            }
+            else
+            {
+                pAddBssParams->staContext.htLdpcCapable = (tANI_U8)pBeaconStruct->HTCaps.advCodingCap;
+                pAddBssParams->staContext.vhtLdpcCapable = (tANI_U8)pBeaconStruct->VHTCaps.ldpcCodingCap;
+            }
             
             if( pBeaconStruct->HTInfo.present )
                 pAddBssParams->staContext.rifsMode = pBeaconStruct->HTInfo.rifsMode;