qcacld-2.0: Trigger bug report and SSR if stale PE session in present

If stale PE session is present during join and rejoin request, then trigger
bug report and SSR.

Change-Id: I0f6bd3996959184daa4672adb82f33a67c9b134f
CRs-Fixed: 1049113

5 files changed, 60 insertions, 2 deletions

diff --git a/CORE/MAC/inc/aniGlobal.h b/CORE/MAC/inc/aniGlobal.h
index fb9fd50b78d3..ebeaa6c62656 100644
--- a/CORE/MAC/inc/aniGlobal.h
+++ b/CORE/MAC/inc/aniGlobal.h
@@ -237,6 +237,7 @@ enum log_event_host_reason_code {
 	WLAN_LOG_REASON_MGMT_FRAME_TIMEOUT,
 	WLAN_LOG_REASON_SME_OUT_OF_CMD_BUF,
 	WLAN_LOG_REASON_NO_SCAN_RESULTS,
+	WLAN_LOG_REASON_STALE_SESSION_FOUND,
 };
 
 
diff --git a/CORE/MAC/src/pe/include/limSession.h b/CORE/MAC/src/pe/include/limSession.h
index b085edb4f27f..e55e4dcec6d0 100644
--- a/CORE/MAC/src/pe/include/limSession.h
+++ b/CORE/MAC/src/pe/include/limSession.h
@@ -648,6 +648,8 @@ void peDeleteSession(tpAniSirGlobal pMac, tpPESession psessionEntry);
  */
 tpPESession pe_find_session_by_sme_session_id(tpAniSirGlobal mac_ctx,
 					   uint8_t sme_session_id);
+uint8_t pe_count_session_with_sme_session_id(tpAniSirGlobal mac_ctx,
+	uint8_t sme_session_id);
 
 int pe_get_active_session_count(tpAniSirGlobal mac_ctx);
 #endif //#if !defined( __LIM_SESSION_H )
diff --git a/CORE/MAC/src/pe/lim/limProcessSmeReqMessages.c b/CORE/MAC/src/pe/lim/limProcessSmeReqMessages.c
index 7b8b8dc4ea68..9d6f7f4f2330 100644
--- a/CORE/MAC/src/pe/lim/limProcessSmeReqMessages.c
+++ b/CORE/MAC/src/pe/lim/limProcessSmeReqMessages.c
@@ -1912,8 +1912,19 @@ __limProcessSmeJoinReq(tpAniSirGlobal pMac, tANI_U32 *pMsgBuf)
          */
         lim_update_rrm_capability(pMac, pSmeJoinReq);
 
-        /* check for the existence of start BSS session  */
+        if (pe_find_session_by_sme_session_id(pMac, pSmeJoinReq->sessionId)) {
+            limLog(pMac, LOGE,
+                 FL("A session already exist for the SME session %d"),
+                 pSmeJoinReq->sessionId);
+            vos_flush_logs(WLAN_LOG_TYPE_FATAL,
+                           WLAN_LOG_INDICATOR_HOST_DRIVER,
+                           WLAN_LOG_REASON_STALE_SESSION_FOUND,
+                           true);
+            retCode = eSIR_SME_REFUSED;
+            goto end;
+        }
 
+        /* check for the existence of start BSS session  */
         if((psessionEntry = peFindSessionByBssid(pMac,pSmeJoinReq->bssDescription.bssId,&sessionId)) != NULL)
         {
             limLog(pMac, LOGE, FL("Session(%d) Already exists for BSSID: "
@@ -2417,6 +2428,7 @@ __limProcessSmeReassocReq(tpAniSirGlobal pMac, tANI_U32 *pMsgBuf)
     tpPESession        psessionEntry = NULL;
     tANI_U8            sessionId;
     tANI_U8            smeSessionId;
+    uint8_t            no_of_sessions;
     tANI_U16           transactionId;
     tPowerdBm            localPowerConstraint = 0, regMax = 0;
     tANI_U32           teleBcnEn = 0;
@@ -2451,6 +2463,20 @@ __limProcessSmeReassocReq(tpAniSirGlobal pMac, tANI_U32 *pMsgBuf)
         goto end;
     }
 
+    no_of_sessions =
+        pe_count_session_with_sme_session_id(pMac, pReassocReq->sessionId);
+    if (no_of_sessions > 1) {
+        limLog(pMac, LOGE,
+               FL("%d sessions exist for the SME session %d"),
+               no_of_sessions, pReassocReq->sessionId);
+        vos_flush_logs(WLAN_LOG_TYPE_FATAL,
+                      WLAN_LOG_INDICATOR_HOST_DRIVER,
+                      WLAN_LOG_REASON_STALE_SESSION_FOUND,
+                      true);
+        retCode = eSIR_SME_REFUSED;
+        goto end;
+   }
+
    if((psessionEntry = peFindSessionByBssid(pMac,pReassocReq->bssDescription.bssId,&sessionId))==NULL)
     {
         limLog(pMac, LOGE, FL("Session does not exist for given bssId"));
diff --git a/CORE/MAC/src/pe/lim/limSession.c b/CORE/MAC/src/pe/lim/limSession.c
index 9a5096a195b6..fc13b7e2e802 100644
--- a/CORE/MAC/src/pe/lim/limSession.c
+++ b/CORE/MAC/src/pe/lim/limSession.c
@@ -516,6 +516,34 @@ tpPESession pe_find_session_by_sme_session_id(tpAniSirGlobal mac_ctx,
 	return NULL;
 }
 
+/**
+ * pe_count_session_with_sme_session_id() - count PE sessions for given sme
+ * session id
+ * @mac_ctx:          pointer to global adapter context
+ * @sme_session_id:   sme session id
+ *
+ * count PE sessions for given sme session id
+ *
+ * Return: number of pe session entry for given sme session
+ */
+uint8_t pe_count_session_with_sme_session_id(tpAniSirGlobal mac_ctx,
+					uint8_t sme_session_id)
+{
+	uint8_t i, count = 0;
+	for (i = 0; i < mac_ctx->lim.maxBssId; i++) {
+		if ((mac_ctx->lim.gpSession[i].valid) &&
+		    (mac_ctx->lim.gpSession[i].smeSessionId ==
+			sme_session_id)) {
+			count++;
+		}
+	}
+	limLog(mac_ctx, LOG4,
+	       FL("%d sessions found for smeSessionID: %d"),
+	       count, sme_session_id);
+	return count;
+}
+
+
 /*--------------------------------------------------------------------------
   \brief peFindSessionBySessionId() - looks up the PE session given the session ID.
 
diff --git a/CORE/VOSS/src/vos_api.c b/CORE/VOSS/src/vos_api.c
index 110f106d328d..de027652b253 100644
--- a/CORE/VOSS/src/vos_api.c
+++ b/CORE/VOSS/src/vos_api.c
@@ -2764,7 +2764,8 @@ void vos_get_log_and_reset_completion(uint32_t *is_fatal,
 
 	if ((WLAN_LOG_INDICATOR_HOST_DRIVER == *indicator) &&
 	    ((WLAN_LOG_REASON_SME_OUT_OF_CMD_BUF == *reason_code) ||
-		 (WLAN_LOG_REASON_SME_COMMAND_STUCK == *reason_code)))
+		 (WLAN_LOG_REASON_SME_COMMAND_STUCK == *reason_code) ||
+		 (WLAN_LOG_REASON_STALE_SESSION_FOUND == *reason_code)))
 		*is_ssr_needed = true;
 	else
 		*is_ssr_needed = false;