Changing handling of ue context release request. Compiling now, needs testing.

srsepc/hdr/mme/mme_gtpc.h

@@ -52,7 +52,7 @@ public:
   void handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu);
   void send_modify_bearer_request(erab_ctx_t *bearer_ctx);
   void handle_modify_bearer_response(srslte::gtpc_pdu *mb_resp_pdu);
-  void send_delete_session_request(ue_ctx_t *ue_ctx);
+  void send_delete_session_request(ue_ecm_ctx_t *ue_ecm_ctx);
 
 private:
 

srsepc/src/mme/mme_gtpc.cc

@@ -219,7 +219,7 @@ mme_gtpc::handle_modify_bearer_response(srslte::gtpc_pdu *mb_resp_pdu)
 }
 
 void
-mme_gtpc::send_delete_session_request(ue_ctx_t *ue_ctx) 
+mme_gtpc::send_delete_session_request(ue_ecm_ctx_t *ue_ecm_ctx) 
 {
   m_mme_gtpc_log->info("Sending GTP-C Delete Session Request request\n");
   srslte::gtpc_pdu del_req_pdu;
@@ -230,9 +230,9 @@ mme_gtpc::send_delete_session_request(ue_ctx_t *ue_ctx)
 
   for(int i = 0; i<MAX_ERABS_PER_UE; i++)
   {
-    if(ue_ctx->erabs_ctx[i].state != ERAB_DEACTIVATED)
+    if(ue_ecm_ctx->erabs_ctx[i].state != ERAB_DEACTIVATED)
     {
-      sgw_ctrl_fteid = &ue_ctx->erabs_ctx[i].sgw_ctrl_fteid;
+      sgw_ctrl_fteid = &ue_ecm_ctx->erabs_ctx[i].sgw_ctrl_fteid;
       break;
     }
   }

srsepc/src/mme/s1ap_ctx_mngmt_proc.cc

@@ -272,8 +272,8 @@ s1ap_ctx_mngmt_proc::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECON
   m_s1ap_log->info("Received UE Context Release Request. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
   m_s1ap_log->console("Received UE Context Release Request. MME-UE S1AP Id %d\n", mme_ue_s1ap_id);
 
-  ue_ctx_t *ue_ctx = m_s1ap->find_ue_ctx(mme_ue_s1ap_id);
-  if(ue_ctx == NULL)
+  ue_ecm_ctx_t *ue_ecm_ctx = m_s1ap->find_ue_ecm_ctx_from_mme_ue_s1ap_id(mme_ue_s1ap_id);
+  if(ue_ecm_ctx == NULL)
   {
     m_s1ap_log->info("UE not found. MME-UE S1AP Id: %d\n", mme_ue_s1ap_id);
     return false;
@@ -283,7 +283,7 @@ s1ap_ctx_mngmt_proc::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECON
   bool active = false;
   for(int i=0;i<MAX_ERABS_PER_UE;i++)
   {
-    if(ue_ctx->erabs_ctx[i].state != ERAB_DEACTIVATED)
+    if(ue_ecm_ctx->erabs_ctx[i].state != ERAB_DEACTIVATED) //FIXME use ECM state
     {
       active = true;
       //ue_ctx->erabs_ctx[i].state = ERAB_DEACTIVATED;
@@ -293,14 +293,16 @@ s1ap_ctx_mngmt_proc::handle_ue_context_release_request(LIBLTE_S1AP_MESSAGE_UECON
   if(active == true)
   {
     //There are active E-RABs, send delete session request
-    m_mme_gtpc->send_delete_session_request(ue_ctx);
+    m_mme_gtpc->send_delete_session_request(ue_ecm_ctx);
   }
   //m_s1ap->delete_ue_ctx(ue_ctx);
   for(int i=0;i<MAX_ERABS_PER_UE;i++)
   {
-    ue_ctx->erabs_ctx[i].state = ERAB_DEACTIVATED;
+    ue_ecm_ctx->erabs_ctx[i].state = ERAB_DEACTIVATED;
   }
   //Delete UE context
+  m_s1ap->delete_ue_ecm_ctx(ue_ecm_ctx->mme_ue_s1ap_id);
+
   m_s1ap_log->info("Deleted UE Context.\n");
   return true;
 }