wlan: ROME DFS Changes on branch

Implements DFS Channel Change for SAP in addition to
Radar Indication, random channel selection, SAP States
for CAC, partial changes for start beacon Indication.
.
Change-Id: I6b62e797b3c104ba716697d2bb2441aa5fccca7c
CRs-Fixed: 589876

1 files changed, 127 insertions, 0 deletions

diff --git a/CORE/SAP/src/sapModule.c b/CORE/SAP/src/sapModule.c
index b644747209af..9865ade148cb 100644
--- a/CORE/SAP/src/sapModule.c
+++ b/CORE/SAP/src/sapModule.c
@@ -2363,3 +2363,130 @@ VOS_STATUS WLANSAP_DeRegisterMgmtFrame( v_PVOID_t pvosGCtx, tANI_U16 frameType,
 
     return VOS_STATUS_E_FAULT;
 }
+
+/*==========================================================================
+  FUNCTION   WLANSAP_ChannelChangeRequest
+
+  DESCRIPTION
+   This API is used to send an Indication to SME/PE to change the
+   current operating channel to a different target channel.
+
+   The Channel change will be issued by SAP under the following
+   scenarios.
+   1. A radar indication is received  during SAP CAC WAIT STATE and
+      channel change is required.
+   2. A radar indication is received during SAP STARTED STATE and
+      channel change is required.
+  DEPENDENCIES
+   NA.
+
+  PARAMETERS
+  IN
+  sapContext: Pointer to vos global context structure
+
+  RETURN VALUE
+  The VOS_STATUS code associated with performing the operation
+
+  VOS_STATUS_SUCCESS:  Success
+
+  SIDE EFFECTS
+============================================================================*/
+VOS_STATUS
+WLANSAP_ChannelChangeRequest(v_PVOID_t pSapCtx, tANI_U8 tArgetChannel)
+{
+    ptSapContext sapContext = NULL;
+    eHalStatus halStatus = eHAL_STATUS_FAILURE;
+    v_PVOID_t hHal = NULL;
+    sapContext = (ptSapContext)pSapCtx;
+
+    if ( NULL == sapContext )
+    {
+        VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR,
+                   "%s: Invalid SAP pointer from pvosGCtx", __func__);
+        return VOS_STATUS_E_FAULT;
+    }
+
+    hHal = VOS_GET_HAL_CB(sapContext->pvosGCtx);
+    if (NULL == hHal)
+    {
+        VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR,
+                   "%s: Invalid HAL pointer from pvosGCtx", __func__);
+        return VOS_STATUS_E_FAULT;
+    }
+
+    halStatus = sme_RoamChannelChangeReq( hHal,
+                           sapContext->sessionId, tArgetChannel);
+
+    if (halStatus == eHAL_STATUS_SUCCESS)
+    {
+        return VOS_STATUS_SUCCESS;
+    }
+    return VOS_STATUS_E_FAULT;
+}
+
+/*==========================================================================
+
+ FUNCTION    WLANSAP_StartBeaconReq
+ DESCRIPTION
+  This API is used to send an Indication to SME/PE to start
+  beaconing on the current operating channel.
+
+  Brief:When SAP is started on DFS channel and when ADD BSS RESP is received
+  LIM temporarily holds off Beaconing for SAP to do CAC WAIT. When
+  CAC WAIT is done SAP resumes the Beacon Tx by sending a start beacon
+  request to LIM.
+
+ DEPENDENCIES
+  NA.
+
+PARAMETERS
+
+IN
+  pvosGCtx: Pointer to vos global context structure
+
+RETURN VALUE
+  The VOS_STATUS code associated with performing the operation
+
+VOS_STATUS_SUCCESS:  Success
+
+SIDE EFFECTS
+============================================================================*/
+VOS_STATUS WLANSAP_StartBeaconReq(v_PVOID_t pSapCtx)
+{
+    ptSapContext sapContext = NULL;
+    eHalStatus halStatus = eHAL_STATUS_FAILURE;
+    v_PVOID_t hHal = NULL;
+    tANI_U8 dfsCacWaitStatus = 0;
+    sapContext = (ptSapContext)pSapCtx;
+
+    if ( NULL == sapContext )
+    {
+        VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR,
+                   "%s: Invalid SAP pointer from pvosGCtx", __func__);
+        return VOS_STATUS_E_FAULT;
+    }
+
+    hHal = VOS_GET_HAL_CB(sapContext->pvosGCtx);
+    if (NULL == hHal)
+    {
+       VOS_TRACE( VOS_MODULE_ID_SAP, VOS_TRACE_LEVEL_ERROR,
+       "%s: Invalid HAL pointer from pvosGCtx", __func__);
+       return VOS_STATUS_E_FAULT;
+    }
+
+    /* No Radar was found during CAC WAIT, So start Beaconing */
+    if (sapContext->SapDfsInfo.sap_radar_found_status == 0)
+    {
+       /* CAC Wait done without any Radar Detection */
+       dfsCacWaitStatus = 1;
+       halStatus = sme_RoamStartBeaconReq( hHal,
+                   sapContext->sessionId, dfsCacWaitStatus);
+       if (halStatus == eHAL_STATUS_SUCCESS)
+       {
+           return VOS_STATUS_SUCCESS;
+       }
+       return VOS_STATUS_E_FAULT;
+    }
+
+    return VOS_STATUS_E_FAULT;
+}