cld: lim: Process CSA offload enable event

When CSA is offloaded, firmware will send WMI_CSA_HANDLING_EVENTID
with CSA IE information to host. Host will extract new channel
number from CSA IE and switch to new channel by sending vdev_start.

Host should not process CSA IE when CSA is offloaded as it is done
in firmware.

Change-Id: Ice55396a48e5a4caad76194ea4a83939e4e3aa70
CRs-Fixed: 565592

7 files changed, 51 insertions, 2 deletions

diff --git a/CORE/MAC/src/include/sirParams.h b/CORE/MAC/src/include/sirParams.h
index 7a1d83f59630..2aee3bf057e4 100644
--- a/CORE/MAC/src/include/sirParams.h
+++ b/CORE/MAC/src/include/sirParams.h
@@ -572,6 +572,7 @@ typedef struct sSirMbMsgP2p
 #define SIR_HAL_SME_SCAN_CACHE_UPDATED     (SIR_HAL_ITC_MSG_TYPES_BEGIN + 207)
 #endif
 #endif
+#define SIR_CSA_OFFLOAD_EVENT              (SIR_HAL_ITC_MSG_TYPES_BEGIN + 208)
 
 #define SIR_HAL_MSG_TYPES_END              (SIR_HAL_ITC_MSG_TYPES_BEGIN + 0xFF)
 // CFG message types
diff --git a/CORE/MAC/src/pe/include/limSession.h b/CORE/MAC/src/pe/include/limSession.h
index 89148a800c84..23d2c48174eb 100644
--- a/CORE/MAC/src/pe/include/limSession.h
+++ b/CORE/MAC/src/pe/include/limSession.h
@@ -386,6 +386,11 @@ typedef struct sPESession           // Added to Support BT-AMP
      */
     tANI_U8  gUapsdPerAcDeliveryEnableMask;
 
+    /* Flag to skip CSA IE processing when CSA
+     * offload is enabled.
+     */
+    tANI_U8  csaOffloadEnable;
+
     /* Used on STA for AC downgrade. This is a dynamic mask
      * setting which keep tracks of ACs being admitted.
      * If bit is set to 0: That partiular AC is not admitted
diff --git a/CORE/MAC/src/pe/lim/limProcessActionFrame.c b/CORE/MAC/src/pe/lim/limProcessActionFrame.c
index 17270d2fc161..180f3fb202d9 100644
--- a/CORE/MAC/src/pe/lim/limProcessActionFrame.c
+++ b/CORE/MAC/src/pe/lim/limProcessActionFrame.c
@@ -185,8 +185,9 @@ tSirRetStatus limStartChannelSwitch(tpAniSirGlobal pMac, tpPESession psessionEnt
     
     /*If channel switch is already running and it is on a different session, just return*/  
     /*This need to be removed for MCC */
-    if( limIsChanSwitchRunning (pMac) &&
-        psessionEntry->gLimSpecMgmt.dot11hChanSwState != eLIM_11H_CHANSW_RUNNING )
+    if ((limIsChanSwitchRunning (pMac) &&
+        psessionEntry->gLimSpecMgmt.dot11hChanSwState != eLIM_11H_CHANSW_RUNNING) ||
+        psessionEntry->csaOffloadEnable)
     {
        limLog(pMac, LOGW, FL("Ignoring channel switch on session %d"), psessionEntry->peSessionId);
        return eSIR_SUCCESS;
diff --git a/CORE/MAC/src/pe/lim/limProcessMessageQueue.c b/CORE/MAC/src/pe/lim/limProcessMessageQueue.c
index 0a45557ef58f..06b32d655fba 100644
--- a/CORE/MAC/src/pe/lim/limProcessMessageQueue.c
+++ b/CORE/MAC/src/pe/lim/limProcessMessageQueue.c
@@ -1828,6 +1828,10 @@ limProcessMessages(tpAniSirGlobal pMac, tpSirMsgQ  limMsg)
             limHandleDeleteBssRsp(pMac,limMsg); //wrapper routine to handle delete bss response 
             break;
 
+        case WDA_CSA_OFFLOAD_EVENT:
+            limHandleCSAoffloadMsg(pMac, limMsg);
+            break;
+
         case WDA_SET_BSSKEY_RSP:
         case WDA_SET_STA_BCASTKEY_RSP:
             limProcessMlmSetBssKeyRsp( pMac, limMsg );
diff --git a/CORE/MAC/src/pe/lim/limSendSmeRspMessages.c b/CORE/MAC/src/pe/lim/limSendSmeRspMessages.c
index 1d71f2013a28..d4f795ea9762 100644
--- a/CORE/MAC/src/pe/lim/limSendSmeRspMessages.c
+++ b/CORE/MAC/src/pe/lim/limSendSmeRspMessages.c
@@ -2616,8 +2616,44 @@ void limSendExitBmpsInd(tpAniSirGlobal pMac, tExitBmpsReason reasonCode,
 
 } /*** end limSendExitBmpsInd() ***/
 
+/*--------------------------------------------------------------------------
+  \brief limHandleCSAoffloadMsg() - Handle CSA offload message
+  \param pMac                     - pointer to global adapter context
+  \param MsgQ                     - Message pointer.
+  \sa
+  --------------------------------------------------------------------------*/
+void limHandleCSAoffloadMsg(tpAniSirGlobal pMac,tpSirMsgQ MsgQ)
+{
+   tpPESession psessionEntry;
+   tpCSAOffloadParams csa_params = (tpCSAOffloadParams)(MsgQ->bodyptr);
 
+   if(!csa_params)
+   {
+      limLog(pMac, LOGE, FL("limMsgQ body ptr is NULL"));
+      return;
+   }
 
+   psessionEntry = peFindSessionBySessionId(pMac, csa_params->sessionId);
+   if(!psessionEntry)
+   {
+      limLog(pMac, LOGP, FL("Session does not exist for given sessionID"));
+      goto err;
+   }
+
+   if (psessionEntry->limSystemRole == eLIM_STA_ROLE)
+   {
+      psessionEntry->gLimChannelSwitch.switchMode = csa_params->switchmode;
+      /* timer already started by firmware, switch immediately */
+      psessionEntry->gLimChannelSwitch.switchCount = 0;
+      psessionEntry->gLimChannelSwitch.primaryChannel = csa_params->channel;
+      psessionEntry->gLimChannelSwitch.state = eLIM_CHANNEL_SWITCH_PRIMARY_ONLY;
+      psessionEntry->gLimChannelSwitch.secondarySubBand = PHY_SINGLE_CHANNEL_CENTERED;
+      limPrepareFor11hChannelSwitch(pMac, psessionEntry);
+   }
+
+err:
+   palFreeMemory(pMac->hHdd, (void *)csa_params);
+}
 
 /*--------------------------------------------------------------------------
   \brief peDeleteSession() - Handle the Delete BSS Response from HAL.
diff --git a/CORE/MAC/src/pe/lim/limSendSmeRspMessages.h b/CORE/MAC/src/pe/lim/limSendSmeRspMessages.h
index 43e64ed82403..a1f421fc4fef 100644
--- a/CORE/MAC/src/pe/lim/limSendSmeRspMessages.h
+++ b/CORE/MAC/src/pe/lim/limSendSmeRspMessages.h
@@ -72,6 +72,7 @@ void limSendSmePromiscuousModeRsp(tpAniSirGlobal pMac);
 void limSendSmeNeighborBssInd(tpAniSirGlobal,
                               tLimScanResultNode *);
 void limHandleDeleteBssRsp(tpAniSirGlobal pMac,tpSirMsgQ MsgQ);
+void limHandleCSAoffloadMsg(tpAniSirGlobal pMac,tpSirMsgQ MsgQ);
 
 #ifdef WLAN_FEATURE_VOWIFI_11R
 void
diff --git a/CORE/MAC/src/pe/lim/limUtils.c b/CORE/MAC/src/pe/lim/limUtils.c
index 3c7bacc27684..5b55324aa94b 100644
--- a/CORE/MAC/src/pe/lim/limUtils.c
+++ b/CORE/MAC/src/pe/lim/limUtils.c
@@ -7112,6 +7112,7 @@ void limProcessAddStaRsp(tpAniSirGlobal pMac,tpSirMsgQ limMsgQ)
         palFreeMemory(pMac, pAddStaParams);
         return;
     }
+    psessionEntry->csaOffloadEnable = pAddStaParams->csaOffloadEnable;
     if (psessionEntry->limSystemRole == eLIM_STA_IN_IBSS_ROLE)
         (void) limIbssAddStaRsp(pMac, limMsgQ->bodyptr,psessionEntry);
 #ifdef FEATURE_WLAN_TDLS